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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 13,691	$ 8,918
Other comprehensive income (loss)
Foreign currency translation adjustments, net of tax	(1,105)	1,052
Comprehensive income	$ 12,586	$ 9,970

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

Income Taxes	3 Months Ended
Income Taxes	Mar. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the fiscal quarters ended March 30, 2024 and April 1, 2023, CRA’s effective income tax rate (“ETR”) was 28.0% and 29.2%, respectively. The ETR for the first quarter of fiscal 2024 was lower than the first quarter of fiscal 2023 primarily due to changes in state statutory tax rates in the current year, having had a valuation allowance in the prior year that has now been reversed, as well as the impact of a higher profit in the current period.

- Definition

The entire disclosure for income tax.

+ References

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+ Details

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On May 2, 2024, CRA announced that its Board of Directors declared a quarterly cash dividend of $0.42 per common share, payable on June 14, 2024 to shareholders of record as of May 28, 2024.

Fair value of Financial Instruments (Tables)

3 Months Ended

Mar. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of fair value, assets and liabilities measured on recurring basis

The following tables show CRA's financial instruments recorded in the condensed consolidated financial statements which are measured at fair value on a recurring basis by level within the fair value hierarchy (in thousands):


	March 30, 2024
	Level 1		Level 2		Level 3
Assets:
Money market mutual funds	$	—	$	—	$	—
Total Assets	$	—	$	—	$	—
Liabilities:
Contingent consideration liability	$	—	$	—	$	190
Total Liabilities	$	—	$	—	$	190


	December 30, 2023
	Level 1		Level 2		Level 3
Assets:
Money market mutual funds	$	—	$	—	$	—
Total Assets	$	—	$	—	$	—
Liabilities:
Contingent consideration liability	$	—	$	—	$	190
Total Liabilities	$	—	$	—	$	190

Summary of the changes in the contingent consideration liabilities

The following table summarizes the changes in the contingent consideration liability (in thousands):


	Fiscal Quarter Ended		Fiscal Year Ended
	March 30, 2024		December 30, 2023
Beginning balance	$	190	$	1,056
Remeasurement of acquisition-related contingent consideration	—		(934)
Accretion	—		68

Ending balance	$	190	$	190

Forgivable Loans - Schedule of Forgivable Loan Activity (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 30, 2024	Dec. 30, 2023
Forgivable loan activity
Beginning balance	$ 53,941	$ 56,456
Advances	5,250	23,342
Repayments	0	(1,816)
Amortization	(5,772)	(24,198)
Effects of foreign currency translation	(26)	157
Ending balance	53,393	53,941
Current portion of forgivable loans	14,718	8,759
Non-current portion of forgivable loans	$ 38,675	$ 45,182

Revenues and Allowances - Contract Balances from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Dec. 30, 2023
Contract liabilities:
Contract liabilities	$ 2,683		$ 6,037
Revenue recognized from:
Amounts included in contract liabilities at the beginning of the period	4,703	$ 5,139
Performance obligations satisfied in previous periods	$ 2,847	$ 2,638

Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Numerator:
Net income — basic	$ 13,691	$ 8,918
Less: net income attributable to participating shares	46	34
Net income — diluted	$ 13,645	$ 8,884
Denominator:
Weighted average shares outstanding — basic (in shares)	6,926,000	7,119,000
Effect of dilutive stock options and restricted stock units (in shares)	85,000	133,000
Weighted average shares outstanding — diluted (in shares)	7,011,000	7,252,000
Basic (in dollars per share)	$ 1.97	$ 1.25
Diluted (in dollars per share)	$ 1.95	$ 1.23
Anti-dilutive share-based awards excluded (in shares)	0	196,000

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies As described in the previous note, CRA is party to standby letters of credit with its lenders in support of minimum future lease payments under certain operating leases for office space. CRA is subject to legal actions arising in the ordinary course of business. In management’s opinion, based on current knowledge, CRA believes it has adequate legal defenses or insurance coverage, or both, with respect to the eventuality of such actions. CRA does not believe any settlement or judgment relating to any pending legal action would materially affect its financial position or results of operations. However, the outcome of such legal actions is inherently unpredictable and subject to inherent uncertainties.

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Current assets:
Cash and cash equivalents	$ 37,122	$ 45,586
Accounts receivable, net of allowances of $5,201 and $4,335, respectively	139,062	142,729
Unbilled services, net of allowances of $896 and $1,629, respectively	70,251	56,827
Prepaid expenses and other current assets	14,286	11,575
Forgivable loans	14,718	8,759
Total current assets	275,439	265,476
Property and equipment, net	36,833	38,176
Goodwill	93,853	93,989
Intangible assets, net	6,851	7,196
Right-of-use assets	84,706	86,887
Deferred income taxes	13,998	13,885
Forgivable loans, net of current portion	38,675	45,182
Other assets	2,187	2,420
Total assets	552,542	553,211
Current liabilities:
Accounts payable	33,350	28,701
Accrued expenses	106,008	171,040
Deferred revenue and other liabilities	9,080	12,289
Current portion of lease liabilities	16,743	16,475
Current portion of deferred compensation	1,590	7,582
Revolving line of credit	70,000	0
Total current liabilities	236,771	236,087
Non-current liabilities:
Deferred compensation and other non-current liabilities	13,967	11,681
Non-current portion of lease liabilities	88,961	92,280
Deferred income taxes	1,053	1,062
Total non-current liabilities	103,981	105,023
Commitments and contingencies (Note 10)
Shareholders’ equity:
Preferred stock, no par value; 1,000,000 shares authorized; none issued and outstanding	0	0
Common stock, no par value; 25,000,000 shares authorized; 6,889,298 and 6,934,265 shares issued and outstanding, respectively	0	0
Retained earnings	225,077	224,283
Accumulated other comprehensive loss	(13,287)	(12,182)
Total shareholders’ equity	211,790	212,101
Total liabilities and shareholders’ equity	$ 552,542	$ 553,211

Fair Value of Financial Instruments (Details) - Recurring - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Fair Value, Inputs, Level 1
ASSETS
Money market mutual funds	$ 0	$ 0
Total Assets	0	0
Liabilities:
Contingent consideration liability	0	0
Total Liabilities	0	0
Fair Value, Inputs, Level 2
ASSETS
Money market mutual funds	0	0
Total Assets	0	0
Liabilities:
Contingent consideration liability	0	0
Total Liabilities	0	0
Fair Value, Inputs, Level 3
ASSETS
Money market mutual funds	0	0
Total Assets	0	0
Liabilities:
Contingent consideration liability	190	190
Total Liabilities	$ 190	$ 190

Net Income Per Share

3 Months Ended

Mar. 30, 2024

Earnings Per Share [Abstract]

Net Income Per Share

CRA calculates basic earnings per share using the two-class method. CRA calculates diluted earnings per share using the more dilutive of either the two-class method or treasury stock method. The two-class method was more dilutive for the fiscal quarters ended March 30, 2024 and April 1, 2023.

Under the two-class method, net earnings are allocated to each class of common stock and participating security as if all the net earnings for the period had been distributed. CRA's participating securities consist of unvested share-based payment awards that contain a nonforfeitable right to receive dividends and therefore are considered to participate in undistributed earnings with common shareholders. Net earnings allocable to these participating securities were not material for the fiscal quarters ended March 30, 2024 and April 1, 2023.

The following table presents the calculation of basic and diluted net income per share (in thousands, except per share data):


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Numerator:
Net income — basic	$	13,691	$	8,918
Less: net income attributable to participating shares	46		34
Net income — diluted	$	13,645	$	8,884
Denominator:
Weighted average shares outstanding — basic	6,926		7,119
Effect of dilutive stock options and restricted stock units	85		133
Weighted average shares outstanding — diluted	7,011		7,252
Net income per share:
Basic	$	1.97	$	1.25
Diluted	$	1.95	$	1.23

For the fiscal quarter ended March 30, 2024, there were no anti-dilutive share-based awards that were excluded from the calculation of common stock equivalents for purposes of computing diluted weighted average outstanding shares. For the fiscal quarter ended April 1, 2023, the anti-dilutive share-based awards that were excluded from the calculation of common stock equivalents for purposes of computing diluted weighted average shares outstanding amounted to 196 shares.

Goodwill and Intangible Assets - Acquired and Amortization (Details) - Customer relationships - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Acquired identifiable intangible assets
Useful Life (in years)	10 years
Gross Carrying Amount	$ 13,800	$ 13,800
Accumulated Amortization	(6,949)	(6,604)
Net Carrying Amount	$ 6,851	$ 7,196

CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2022		7,149,884
Beginning balance at Dec. 31, 2022	$ 211,154	$ 1,743	$ 224,392	$ (14,981)
Increase (Decrease) in Shareholders' Equity
Net income	8,918		8,918
Foreign currency translation adjustment	1,052			1,052
Share-based compensation expense	940	$ 940
Restricted shares vesting (in shares)		45,544
Redemption of vested employee restricted shares for tax withholding (in shares)		(16,614)
Redemption of vested employee restricted shares for tax withholding	(1,873)	$ (1,873)
Shares repurchased (in shares)		(180,881)
Shares repurchased	(20,577)	$ (810)	(19,767)
Accrued excise tax on shares repurchased	(173)		(173)
Accrued dividends on unvested shares	45		45
Cash dividends paid (per share)	(2,702)		(2,702)
Ending balance (in shares) at Apr. 01, 2023		6,997,933
Ending balance at Apr. 01, 2023	$ 196,784	$ 0	210,713	(13,929)
Beginning balance (in shares) at Dec. 30, 2023	6,934,265	6,934,265
Beginning balance at Dec. 30, 2023	$ 212,101	$ 0	224,283	(12,182)
Increase (Decrease) in Shareholders' Equity
Net income	13,691		13,691
Foreign currency translation adjustment	(1,105)			(1,105)
Exercise of stock options (in shares)		0
Exercise of stock options	0	$ 0
Share-based compensation expense	1,039	$ 1,039
Restricted shares vesting (in shares)		33,441
Redemption of vested employee restricted shares for tax withholding (in shares)		(12,526)
Redemption of vested employee restricted shares for tax withholding	(1,631)	$ (1,631)
Shares repurchased (in shares)		(65,882)
Shares repurchased	(9,242)	$ 592	(9,834)
Accrued excise tax on shares repurchased	(65)		(65)
Accrued dividends on unvested shares	77		77
Cash dividends paid (per share)	$ (3,075)		(3,075)
Ending balance (in shares) at Mar. 30, 2024	6,889,298	6,889,298
Ending balance at Mar. 30, 2024	$ 211,790	$ 0	$ 225,077	$ (13,287)

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements include the accounts of CRA International, Inc. and its wholly-owned subsidiaries (collectively the "Company") which require consolidation after the elimination of intercompany accounts and transactions. These financial statements have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for Quarterly Reports on Form 10-Q. Accordingly, these financial statements do not include all the information and note disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for annual financial statements. Certain prior period amounts have been reclassified to conform to the current period presentation. These reclassifications had no effect on previously reported results of operations, financial position, or cash flows. In the opinion of management, these financial statements reflect all adjustments of a normal, recurring nature necessary for the fair presentation of CRA’s results of operations, financial position, cash flows, and shareholders’ equity for the interim periods presented in conformity with U.S. GAAP. Results of operations for the interim periods presented herein are not necessarily indicative of results of operations for a full year. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the fiscal year ended December 30, 2023 included in CRA’s Annual Report on Form 10-K filed with the SEC on February 29, 2024 (the “2023 Form 10-K”).
Estimates	Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make significant estimates and judgments that affect the reported amounts of assets and liabilities, as well as the related disclosure of contingent assets and liabilities, at the date of the financial statements, and the reported amounts of consolidated revenues and expenses during the reporting period. Estimates in these condensed consolidated financial statements include, but are not limited to, allowances for accounts receivable and unbilled services, revenue recognition on fixed-price contracts, variable consideration to be included in the transaction price of revenue contracts, the useful life of long-lived assets, measurement of operating lease right-of-use assets and liabilities, share-based compensation, valuation of contingent consideration liabilities, valuation of acquired intangible assets, goodwill, accrued and deferred income taxes, valuation allowances on deferred tax assets, accrued incentive compensation, and certain other accrued expenses. These items are monitored and analyzed by CRA for changes in facts and circumstances, and material changes in these estimates could occur in the future. Changes in estimates are recorded in the period in which they become known. CRA bases its estimates on historical experience and various other assumptions that CRA believes to be reasonable under the circumstances. Actual results may differ from those estimates if CRA’s assumptions based on past experience or other assumptions do not turn out to be substantially accurate
Recent Accounting Standards Not Yet Adopted	Recent Accounting Standards Not Yet Adopted Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures In November 2023, the FASB issued Accounting Standards Update ("ASU") No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07). The ASU improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 also requires that a public entity that has a single reportable segment provide all disclosures required by these amendments and all existing segment disclosures in Topic 280. ASU 2023-07 is effective for CRA for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. CRA plans to adopt the amendments during the fourth fiscal quarter of 2024. CRA is in the process of evaluating the impact of adopting ASU 2023-07. Income Taxes (Topic 740): Improvements to Income Tax Disclosures In December 2023, the FASB issued Accounting Standards Update ("ASU") No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09). The ASU requires disclosure of specific categories in the rate reconciliation, provides additional information for reconciling items that meet a quantitative threshold, and discloses the amount of income taxes paid disaggregated by federal, state, foreign taxes, and individual jurisdiction. ASU 2023-09 also requires income (or loss) from continuing operations before income tax expense (or benefit) disaggregated between domestic and foreign and income tax expense (or benefit) from continuing operations disaggregated by federal (national), state, and foreign. ASU 2023-09 is effective for CRA for annual periods beginning after December 15, 2024. CRA plans to adopt the amendments during the annual reporting fiscal year of 2025. CRA is in the process of evaluating the impact of adopting ASU 2023-09.

Revenues and Allowances - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Disaggregation of Revenue
Consulting services revenues	$ 171,789	$ 152,845
United States
Disaggregation of Revenue
Consulting services revenues	142,204	117,872
United Kingdom
Disaggregation of Revenue
Consulting services revenues	21,154	25,649
Other
Disaggregation of Revenue
Consulting services revenues	8,431	9,324
Fixed-price
Disaggregation of Revenue
Consulting services revenues	30,082	26,834
Time-and-materials
Disaggregation of Revenue
Consulting services revenues	$ 141,707	$ 126,011

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Section 50
-Paragraph 41
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+ Details

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Mar. 30, 2024	Apr. 01, 2023
Pay vs Performance Disclosure
Net income	$ 13,691	$ 8,918

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 30, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Description of Business CRA International, Inc. (“CRA” or the “Company”) is a worldwide leading consulting services firm that applies advanced analytic techniques and in-depth industry knowledge to complex engagements for a broad range of clients. CRA offers services in two broad areas: litigation, regulatory, and financial consulting and management consulting. CRA operates in one business segment. CRA operates its business under its registered trade name, Charles River Associates. Basis of Presentation The unaudited condensed consolidated financial statements include the accounts of CRA International, Inc. and its wholly-owned subsidiaries (collectively the "Company") which require consolidation after the elimination of intercompany accounts and transactions. These financial statements have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for Quarterly Reports on Form 10-Q. Accordingly, these financial statements do not include all the information and note disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for annual financial statements. Certain prior period amounts have been reclassified to conform to the current period presentation. These reclassifications had no effect on previously reported results of operations, financial position, or cash flows. In the opinion of management, these financial statements reflect all adjustments of a normal, recurring nature necessary for the fair presentation of CRA’s results of operations, financial position, cash flows, and shareholders’ equity for the interim periods presented in conformity with U.S. GAAP. Results of operations for the interim periods presented herein are not necessarily indicative of results of operations for a full year. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the fiscal year ended December 30, 2023 included in CRA’s Annual Report on Form 10-K filed with the SEC on February 29, 2024 (the “2023 Form 10-K”). Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make significant estimates and judgments that affect the reported amounts of assets and liabilities, as well as the related disclosure of contingent assets and liabilities, at the date of the financial statements, and the reported amounts of consolidated revenues and expenses during the reporting period. Estimates in these condensed consolidated financial statements include, but are not limited to, allowances for accounts receivable and unbilled services, revenue recognition on fixed-price contracts, variable consideration to be included in the transaction price of revenue contracts, the useful life of long-lived assets, measurement of operating lease right-of-use assets and liabilities, share-based compensation, valuation of contingent consideration liabilities, valuation of acquired intangible assets, goodwill, accrued and deferred income taxes, valuation allowances on deferred tax assets, accrued incentive compensation, and certain other accrued expenses. These items are monitored and analyzed by CRA for changes in facts and circumstances, and material changes in these estimates could occur in the future. Changes in estimates are recorded in the period in which they become known. CRA bases its estimates on historical experience and various other assumptions that CRA believes to be reasonable under the circumstances. Actual results may differ from those estimates if CRA’s assumptions based on past experience or other assumptions do not turn out to be substantially accurate. Recent Accounting Standards Not Yet Adopted Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures In November 2023, the FASB issued Accounting Standards Update ("ASU") No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07). The ASU improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 also requires that a public entity that has a single reportable segment provide all disclosures required by these amendments and all existing segment disclosures in Topic 280. ASU 2023-07 is effective for CRA for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. CRA plans to adopt the amendments during the fourth fiscal quarter of 2024. CRA is in the process of evaluating the impact of adopting ASU 2023-07. Income Taxes (Topic 740): Improvements to Income Tax Disclosures In December 2023, the FASB issued Accounting Standards Update ("ASU") No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09). The ASU requires disclosure of specific categories in the rate reconciliation, provides additional information for reconciling items that meet a quantitative threshold, and discloses the amount of income taxes paid disaggregated by federal, state, foreign taxes, and individual jurisdiction. ASU 2023-09 also requires income (or loss) from continuing operations before income tax expense (or benefit) disaggregated between domestic and foreign and income tax expense (or benefit) from continuing operations disaggregated by federal (national), state, and foreign. ASU 2023-09 is effective for CRA for annual periods beginning after December 15, 2024. CRA plans to adopt the amendments during the annual reporting fiscal year of 2025. CRA is in the process of evaluating the impact of adopting ASU 2023-09.

Fair Value of Financial Instruments

3 Months Ended

Mar. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments


	March 30, 2024
	Level 1		Level 2		Level 3
Assets:
Money market mutual funds	$	—	$	—	$	—
Total Assets	$	—	$	—	$	—
Liabilities:
Contingent consideration liability	$	—	$	—	$	190
Total Liabilities	$	—	$	—	$	190


	December 30, 2023
	Level 1		Level 2		Level 3
Assets:
Money market mutual funds	$	—	$	—	$	—
Total Assets	$	—	$	—	$	—
Liabilities:
Contingent consideration liability	$	—	$	—	$	190
Total Liabilities	$	—	$	—	$	190

The contingent consideration liability pertains to estimated future contingent consideration payments related to the acquisition of bioStrategies Group, Inc. during fiscal 2022. The following table summarizes the changes in the contingent consideration liability (in thousands):


	Fiscal Quarter Ended		Fiscal Year Ended
	March 30, 2024		December 30, 2023
Beginning balance	$	190	$	1,056
Remeasurement of acquisition-related contingent consideration	—		(934)
Accretion	—		68

Ending balance	$	190	$	190

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

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+ Details

Revenues and Allowances (Tables)

3 Months Ended

Mar. 30, 2024

Revenue from Contract with Customer [Abstract]

Schedule of disaggregate CRA's revenue by type of contract and geographic location

The following tables disaggregate CRA’s revenue by type of contract and geographic location (in thousands):


	Fiscal Quarter Ended
Type of Contract	March 30, 2024		April 1, 2023
Consulting services revenues:
Fixed-price	$	30,082	$	26,834
Time-and-materials	141,707		126,011
Total	$	171,789	$	152,845

Revenues have been attributed to locations based on the location of the legal entity generating the revenues.


	Fiscal Quarter Ended
Geographic Breakdown	March 30, 2024		April 1, 2023
Consulting services revenues:
United States	$	142,204	$	117,872
United Kingdom	21,154		25,649
Other	8,431		9,324
Total	$	171,789	$	152,845

Schedule of bad debt expense, net of recoveries

The following table presents CRA's bad debt expense, net of recoveries of previously written off allowances (in thousands):


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Bad debt expense (recovery), net	$	663	$	—

Schedule of expenses are subject to reimbursement

The following expenses are subject to reimbursement (in thousands):


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Reimbursable expenses	$	17,061	$	13,981

Schedule of opening and closing balances and result of changes in contract liability balance (in thousands)

The following table presents the closing balances of CRA's contract liabilities (in thousands):


	March 30, 2024		December 30, 2023
Contract liabilities	$	2,683	$	6,037

CRA recognized the following revenue that was included in the contract liabilities balance as of the opening of the respective period or for performance obligations satisfied in previous periods (in thousands):


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Amounts included in contract liabilities at the beginning of the period	$	4,703	$	5,139
Performance obligations satisfied in previous periods	$	2,847	$	2,638

Goodwill and Intangible Assets

3 Months Ended

Mar. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

The changes in the carrying amount of goodwill for the fiscal quarter ended March 30, 2024 are summarized as follows (in thousands):


Goodwill, at December 30, 2023	$	165,882
Accumulated goodwill impairment	(71,893)
Goodwill, net at December 30, 2023	93,989
Additions due to acquisitions	—
Foreign currency translation adjustment	(136)
Goodwill, net at March 30, 2024	$	93,853

Goodwill, net at March 30, 2024, is comprised of goodwill of $165.7 million and accumulated impairment of $71.9 million. There were no impairment losses related to goodwill during the fiscal quarter ended March 30, 2024 or during the fiscal year ended December 30, 2023.

Intangible assets that are separable from goodwill and have determinable useful lives are valued separately and amortized using the straight-line method over their expected useful lives. The components of acquired identifiable intangible assets are as follows (in thousands):


		March 30, 2024						December 30, 2023
	Useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount

Customer relationships	10	$	13,800	$	(6,949)	$	6,851	$	13,800	$	(6,604)	$	7,196

There were no impairment losses related to intangible assets during the fiscal quarter ended March 30, 2024 or during the fiscal year ended December 30, 2023. Amortization expense related to intangible assets was $0.3 million and $0.4 million for the fiscal quarters ended March 30, 2024 and April 1, 2023, respectively.

Subsequent Events (Details) - $ / shares		3 Months Ended
Subsequent Events (Details) - $ / shares	May 02, 2024	Sep. 30, 2023	Oct. 01, 2022
Subsequent Events
Common share quarterly cash dividend declared (in dollars per share)		$ 0.42	$ 0.36
Subsequent Events
Subsequent Events
Common share quarterly cash dividend declared (in dollars per share)	$ 0.42

Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Accrued Liabilities, Current [Abstract]
Compensation and related expenses	$ 81,503	$ 143,647
Performance awards	8,105	16,556
Direct project accruals	2,158	1,704
Other	14,242	9,133
Total accrued expenses	106,008	171,040
Compensation and related expenses
Accrued bonuses	$ 56,600	$ 121,200

Summary of Significant Accounting Policies - Description of Business and Fiscal Year (Details)	3 Months Ended
	Mar. 30, 2024 area segment
Accounting Policies [Abstract]
Number of broad areas of consulting services \| area	2
Number of business segment \| segment	1

Forgivable Loans (Tables)

3 Months Ended

Mar. 30, 2024

Forgivable Loans

Schedule of forgivable loan activity

The following table presents forgivable loan activity for the respective periods (in thousands):


	March 30, 2024		December 30, 2023
Beginning balance	$	53,941	$	56,456
Advances	5,250		23,342
Repayments	—		(1,816)

Amortization	(5,772)		(24,198)
Effects of foreign currency translation	(26)		157
Ending balance	$	53,393	$	53,941
Current portion of forgivable loans	$	14,718	$	8,759
Non-current portion of forgivable loans	$	38,675	$	45,182

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Accrued Expenses

3 Months Ended

Mar. 30, 2024

Accrued Liabilities, Current [Abstract]

Accrued Expenses

Accrued expenses consist of the following (in thousands):


	March 30, 2024		December 30, 2023
Compensation and related expenses	$	81,503	$	143,647
Performance awards	8,105		16,556
Direct project accruals	2,158		1,704
Other	14,242		9,133
Total accrued expenses	$	106,008	$	171,040

As of March 30, 2024 and December 30, 2023, approximately $56.6 million and $121.2 million, respectively, of accrued bonuses were included above in “Compensation and related expenses.”

Fair Value of Financial Instruments - Change in Contingent Consideration Liability (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 30, 2024	Dec. 30, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 190	$ 1,056
Remeasurement of acquisition-related contingent consideration	0	(934)
Accretion	0	68
Ending balance	$ 190	$ 190

Forgivable Loans - Narrative (Details)	Mar. 30, 2024
Forgivable Loans [Line Items]
Forgivable loans, interest rate (up to)	0.0600
Minimum
Forgivable Loans [Line Items]
Forgivable loan, term	2 years
Maximum
Forgivable Loans [Line Items]
Forgivable loan, term	6 years

CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2023	Oct. 01, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividends paid to shareholders (in dollars per share)	$ 0.42	$ 0.36

Forgivable Loans

3 Months Ended

Mar. 30, 2024

Forgivable Loans

Forgivable Loans

In order to attract and retain highly skilled professionals, CRA may issue forgivable loans to employees and non-employee experts, certain of which may be denominated in local currencies. A portion of these loans is collateralized. The forgivable loans have terms that are generally between two and six years with interest rates currently ranging up to 6.00%. The principal amount of forgivable loans and accrued interest is forgiven by CRA over the term of the loans, so long as the employee or non-employee expert continues employment or affiliation with CRA and complies with certain contractual requirements. The forgiveness of the principal amount of the loans is recorded as compensation over the service period, which is consistent with the term of the loans.

The following table presents forgivable loan activity for the respective periods (in thousands):


	March 30, 2024		December 30, 2023
Beginning balance	$	53,941	$	56,456
Advances	5,250		23,342
Repayments	—		(1,816)

Amortization	(5,772)		(24,198)
Effects of foreign currency translation	(26)		157
Ending balance	$	53,393	$	53,941
Current portion of forgivable loans	$	14,718	$	8,759
Non-current portion of forgivable loans	$	38,675	$	45,182

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
OPERATING ACTIVITIES:
Net income	$ 13,691	$ 8,918
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	2,792	2,943
Right-of-use asset amortization	3,565	3,570
Deferred income taxes	(157)	(236)
Share-based compensation expense	1,039	940
Bad debt expense (recovery)	663	0
Unrealized foreign currency remeasurement (gains) losses, net	(208)	(20)
Changes in operating assets and liabilities:
Accounts receivable	2,529	17,659
Unbilled services	(13,623)	(19,012)
Prepaid expenses and other current assets, and other assets	(2,552)	875
Forgivable loans	523	(9,982)
Incentive cash awards payable	2,383	1,929
Accounts payable, accrued expenses, and other liabilities	(69,302)	(73,233)
Lease liabilities	(4,423)	(4,402)
Net cash used in operating activities	(63,080)	(70,051)
INVESTING ACTIVITIES:
Purchases of property and equipment	(730)	(562)
Consideration paid for acquisition, net	0	(570)
Net cash used in investing activities	(730)	(1,132)
FINANCING ACTIVITIES:
Borrowings under revolving line of credit	70,000	105,000
Repayments under revolving line of credit	0	(5,000)
Tax withholding payments reimbursed by shares	(1,631)	(1,873)
Cash dividends paid	(3,075)	(2,702)
Repurchase of common stock	(9,242)	(20,577)
Net cash provided by financing activities	56,052	74,848
Effect of foreign exchange rates on cash and cash equivalents	(706)	407
Net increase (decrease) in cash and cash equivalents	(8,464)	4,072
Cash and cash equivalents at beginning of period	45,586	31,447
Cash and cash equivalents at end of period	37,122	35,519
Noncash investing and financing activities:
Increase in accounts payable and accrued expenses for property and equipment	454	23
Excise tax on share repurchases	(65)	(173)
Right-of-use assets obtained in exchange for lease obligations	1,955	0
Supplemental cash flow information:
Cash paid for taxes	1,534	1,081
Cash paid for interest	91	124
Cash paid for amounts included in operating lease liabilities	$ 5,569	$ 5,474

Accrued Expenses (Tables)

3 Months Ended

Mar. 30, 2024

Accrued Liabilities, Current [Abstract]

Schedule of accrued expenses

Accrued expenses consist of the following (in thousands):


	March 30, 2024		December 30, 2023
Compensation and related expenses	$	81,503	$	143,647
Performance awards	8,105		16,556
Direct project accruals	2,158		1,704
Other	14,242		9,133
Total accrued expenses	$	106,008	$	171,040

Net Income Per Share (Tables)

3 Months Ended

Mar. 30, 2024

Earnings Per Share [Abstract]

Schedule of earnings per share

The following table presents the calculation of basic and diluted net income per share (in thousands, except per share data):


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Numerator:
Net income — basic	$	13,691	$	8,918
Less: net income attributable to participating shares	46		34
Net income — diluted	$	13,645	$	8,884
Denominator:
Weighted average shares outstanding — basic	6,926		7,119
Effect of dilutive stock options and restricted stock units	85		133
Weighted average shares outstanding — diluted	7,011		7,252
Net income per share:
Basic	$	1.97	$	1.25
Diluted	$	1.95	$	1.23

Goodwill and Intangible Assets - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Dec. 30, 2023
Acquired identifiable intangible assets
Goodwill	$ 165,700,000		$ 165,882,000
Accumulated impairment	(71,900,000)		(71,893,000)
Goodwill, impairment loss	0		0
Intangible assets impairment losses	0		$ 0
Amortization	$ 300,000	$ 400,000

Income Taxes (Details)	3 Months Ended
Income Taxes (Details)	Mar. 30, 2024	Apr. 01, 2023
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	28.00%	29.20%

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 5,201	$ 4,335
Allowance for unbilled services	$ 896	$ 1,629
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (shares)	1,000,000	1,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value ( in dollars per share )	$ 0	$ 0
Common stock, shares authorized (shares)	25,000,000	25,000,000
Common stock, shares issued (shares)	6,889,298	6,934,265
Common stock, shares outstanding (shares)	6,889,298	6,934,265

Revenues and Allowances - Reserves for Variable Consideration and Credit Risk (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Revenue from Contract with Customer [Abstract]
Bad debt expense (recovery), net	$ 663	$ 0
Reimbursable expenses	$ 17,061	$ 13,981

Credit Agreement	3 Months Ended
Credit Agreement	Mar. 30, 2024
Debt Disclosure [Abstract]
Credit Agreement	Credit Agreement CRA is party to a Credit Agreement, dated as of August 19, 2022 (the "Credit Agreement") with Bank of America, N.A., as swingline lender, a letter of credit issuing bank and administrative agent, and with Citizens Bank, N.A., as a letter of credit issuing bank. The Credit Agreement provides CRA with a $250.0 million revolving credit facility, which may be decreased at CRA's option to $200.0 million during the period from July 16 in a year through January 15 in the next year. Additionally, for the period from January 16 to July 15 of each calendar year, CRA may elect to not increase the revolving credit facility to $250.0 million. The revolving credit facility includes a $25.0 million sublimit for the issuance of letters of credit. Under the Credit Agreement, CRA must comply with various financial and non-financial covenants. The primary financial covenants consist of a maximum consolidated net leverage ratio of 3.0 to 1 and a minimum consolidated interest coverage ratio of 2.5 to 1. The primary non-financial covenants include, but are not limited to, restrictions on CRA's ability to incur future indebtedness, engage in acquisitions or dispositions, pay dividends or repurchase capital stock, and enter into business combinations. Any indebtedness outstanding under the revolving credit facility may become immediately due upon the occurrence of stated events of default, including CRA's failure to pay principal, interest or fees, or upon the breach of any covenant. As of March 30, 2024, CRA was in compliance with the covenants of the Credit Agreement. There were $70.0 million in borrowings outstanding under the revolving credit facility as of March 30, 2024 and no borrowings outstanding as of December 30, 2023. As of March 30, 2024, the amount available under the revolving credit facility was reduced by certain letters of credit outstanding, which amounted to $4.5 million.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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+ Details

Credit Agreement (Details)	3 Months Ended
Credit Agreement (Details)	Mar. 30, 2024 USD ($)	Dec. 30, 2023 USD ($)	Aug. 19, 2022 USD ($)
Senior Loan Agreement
Borrowings on revolving line of credit outstanding	$ 70,000,000	$ 0
Credit Agreement
Senior Loan Agreement
Financial covenants, maximum consolidated net leverage ratio	3.0
Financial covenants, minimum consolidated interest coverage ratio	2.5
Revolving credit facility \| Credit Agreement
Senior Loan Agreement
Revolving credit facility, maximum capacity			$ 250,000,000
Amount available under revolving credit facility reduced			200,000,000
Borrowings on revolving line of credit outstanding	$ 70,000,000	$ 0
Secured by letters of credit \| Credit Agreement
Senior Loan Agreement
Revolving credit facility, maximum capacity			$ 25,000,000
Borrowings on revolving line of credit outstanding	$ 4,500,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Revenues and Allowances

3 Months Ended

Mar. 30, 2024

Revenue from Contract with Customer [Abstract]

Revenues and Allowances

The contracts CRA enters into and operates under specify whether the projects are billed on a time-and-materials or a fixed-price basis. Time-and-materials contracts are typically used for litigation, regulatory, and financial consulting projects while fixed-price contracts are principally used for management consulting projects. In general, project costs are classified in costs of services and are based on the direct salary of CRA’s employee consultants on the engagement, plus all direct expenses incurred to complete the project, including any amounts billed to CRA by its non-employee experts.

Disaggregation of Revenue

The following tables disaggregate CRA’s revenue by type of contract and geographic location (in thousands):


	Fiscal Quarter Ended
Type of Contract	March 30, 2024		April 1, 2023
Consulting services revenues:
Fixed-price	$	30,082	$	26,834
Time-and-materials	141,707		126,011
Total	$	171,789	$	152,845

Revenues have been attributed to locations based on the location of the legal entity generating the revenues.


	Fiscal Quarter Ended
Geographic Breakdown	March 30, 2024		April 1, 2023
Consulting services revenues:
United States	$	142,204	$	117,872
United Kingdom	21,154		25,649
Other	8,431		9,324
Total	$	171,789	$	152,845

Reserves for Variable Consideration and Credit Risk

Revenues from CRA's consulting services are recorded at the net transaction price, which includes estimates of variable consideration for which reserves are established. Variable consideration reserves are based on specific price concessions and those expected to be extended to CRA customers estimated by CRA's historical realization rates. Reserves for variable consideration are recorded as a component of the allowances for accounts receivable and unbilled services on the condensed consolidated balance sheets. Adjustments to the reserves for variable consideration are included in revenues on the condensed consolidated statements of operations.

The following table presents CRA's bad debt expense, net of recoveries of previously written off allowances (in thousands):


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Bad debt expense (recovery), net	$	663	$	—

Reimbursable Expenses

Revenues also include reimbursements for costs incurred by CRA in fulfilling its performance obligations, including travel and other out-of-pocket expenses, fees for outside consultants, and other reimbursable expenses. CRA recovers substantially all of these costs. The following expenses are subject to reimbursement (in thousands):


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Reimbursable expenses	$	17,061	$	13,981

Contract Balances from Contracts with Customers

CRA defines contract assets as assets for which it has recorded revenue because it determines that it is probable that it will earn a performance-based or contingent fee, but is not yet entitled to receive a fee because certain events, such as completion of the measurement period or client approval, must occur. The contract assets balance was immaterial as of March 30, 2024 and December 30, 2023.

When consideration is received, or such consideration is unconditionally due from a customer prior to transferring consulting services to the customer under the terms of a contract, a contract liability is recorded. Contract liabilities are recognized as revenue after performance obligations have been satisfied and all revenue recognition criteria have been met. The following table presents the closing balances of CRA's contract liabilities (in thousands):


	March 30, 2024		December 30, 2023
Contract liabilities	$	2,683	$	6,037


	Fiscal Quarter Ended
	March 30, 2024		April 1, 2023
Amounts included in contract liabilities at the beginning of the period	$	4,703	$	5,139
Performance obligations satisfied in previous periods	$	2,847	$	2,638

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

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+ Details

Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes in the carrying amount of goodwill

The changes in the carrying amount of goodwill for the fiscal quarter ended March 30, 2024 are summarized as follows (in thousands):


Goodwill, at December 30, 2023	$	165,882
Accumulated goodwill impairment	(71,893)
Goodwill, net at December 30, 2023	93,989
Additions due to acquisitions	—
Foreign currency translation adjustment	(136)
Goodwill, net at March 30, 2024	$	93,853

Schedule of components of acquired identifiable intangible assets

The components of acquired identifiable intangible assets are as follows (in thousands):


		March 30, 2024						December 30, 2023
	Useful Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount

Customer relationships	10	$	13,800	$	(6,949)	$	6,851	$	13,800	$	(6,604)	$	7,196

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

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+ Details

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 30, 2024	Apr. 26, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 30, 2024
Document Transition Report	false
Entity File Number	000-24049
Entity Registrant Name	CRA International, Inc.
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	04-2372210
Entity Address, Address Line One	200 Clarendon Street
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02116-5092
City Area Code	617
Local Phone Number	425-3000
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	CRAI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		6,915,601
Entity Central Index Key	0001053706
Amendment Flag	false
Current Fiscal Year End Date	--12-28
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1

Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Dec. 30, 2023
Changes in the carrying amount of goodwill
Goodwill at December 30, 2023	$ 165,700	$ 165,882
Accumulated goodwill impairment	(71,900)	$ (71,893)
Balance at the beginning of the period, Goodwill, net	93,989
Additions due to acquisitions	0
Foreign currency translation adjustment	(136)
Balance at the end of the period, Goodwill, net	$ 93,853

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Income Statement [Abstract]
Revenues	$ 171,789	$ 152,845
Costs of services (exclusive of depreciation and amortization)	118,880	107,837
Selling, general and administrative expenses	30,499	28,372
Depreciation and amortization	2,792	2,943
Income from operations	19,618	13,693
Interest expense, net	(464)	(571)
Foreign currency losses, net	(142)	(528)
Income before provision for income taxes	19,012	12,594
Provision for income taxes	5,321	3,676
Net income	$ 13,691	$ 8,918
Net income per share:
Basic (in dollars per share)	$ 1.97	$ 1.25
Diluted (in dollars per share)	$ 1.95	$ 1.23
Weighted average number of shares outstanding:
Basic (in shares)	6,926	7,119
Diluted (in shares)	7,011	7,252