$CRAI
CRA INTERNATIONAL, INC. Stock $crai

$crai Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-K Financial Statement

#000105370621000008 Filed on March 04, 2021

Income Statement

Concept	2021 Q1	2019 Q4	2018 Q4
Revenue	$137.4M	$119.3M	$108.8M
YoY Change	8.91%	9.65%	12.16%
Cost Of Revenue	$101.2M	$84.30M	$76.40M
YoY Change	11.21%	10.34%	11.37%
Gross Profit	$36.20M	$34.90M	$32.40M
YoY Change	2.84%	7.72%	14.08%
Gross Profit Margin	26.35%	29.25%	29.78%
Selling, General & Admin	$22.30M	$24.70M	$21.90M
YoY Change	-7.56%	12.79%	-18.28%
% of Gross Profit	61.6%	70.77%	67.59%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.550M	$2.910M	$2.630M
YoY Change	20.63%	10.65%	18.47%
% of Gross Profit	9.81%	8.34%	8.12%
Operating Expenses	$25.90M	$27.70M	$24.60M
YoY Change	7.37%	12.6%	-15.46%
Operating Profit	$10.30M	$7.200M	$7.800M
YoY Change	27.24%	-7.69%	-1214.29%
Interest Expense	-$200.0K	-$300.0K	-$100.0K
YoY Change	-155.25%	200.0%	0.0%
% of Operating Profit	-1.94%	-4.17%	-1.28%
Other Income/Expense, Net	-$1.100M	-$900.0K	$300.0K
YoY Change	-178.57%	-400.0%	-400.0%
Pretax Income	$9.100M	$6.100M	$8.300M
YoY Change	-0.6%	-26.51%	-1022.22%
Income Tax	$2.400M	$1.300M	$1.200M
% Of Pretax Income	26.37%	21.31%	14.46%
Net Earnings	$6.700M	$4.800M	$6.900M
YoY Change	3.59%	-30.43%	-400.0%
Net Earnings / Revenue	4.88%	4.02%	6.34%
Basic Earnings Per Share
Diluted Earnings Per Share	$848.1K	$592.6K	$821.4K
COMMON SHARES
Basic Shares Outstanding	7.645M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2021 Q1	2019 Q4	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$45.70M	$25.60M	$38.00M
YoY Change	189.24%	-32.63%	-29.63%
Cash & Equivalents	$45.68M	$25.64M	$38.03M
Short-Term Investments
Other Short-Term Assets	$7.100M	$7.300M	$6.400M
YoY Change	-41.8%	14.06%	-43.86%
Inventory
Prepaid Expenses
Receivables	$111.6M	$107.8M	$130.6M
Other Receivables	$14.70M	$6.800M	$6.100M
Total Short-Term Assets	$220.0M	$184.1M	$181.1M
YoY Change	14.93%	1.64%	-1.74%
LONG-TERM ASSETS
Property, Plant & Equipment	$62.88M	$61.30M	$48.10M
YoY Change	-67.3%	27.43%	7.85%
Goodwill	$89.19M	$88.50M	$88.21M
YoY Change		0.34%
Intangibles	$5.108M	$6.476M
YoY Change
Long-Term Investments
YoY Change
Other Assets	$2.692M	$3.658M	$11.40M
YoY Change	-81.56%	-67.91%	-0.87%
Total Long-Term Assets	$338.5M	$349.2M	$189.7M
YoY Change	-5.65%	84.06%	6.87%
TOTAL ASSETS
Total Short-Term Assets	$220.0M	$184.1M	$181.1M
Total Long-Term Assets	$338.5M	$349.2M	$189.7M
Total Assets	$558.5M	$533.2M	$370.8M
YoY Change	1.51%	43.81%	2.49%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$19.43M	$26.07M	$21.90M
YoY Change	-18.02%	19.04%	18.38%
Accrued Expenses	$136.4M	$121.3M	$107.7M
YoY Change	54.45%	12.63%	14.09%
Deferred Revenue	$5.527M	$4.007M	$5.453M
YoY Change		-26.52%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change	-100.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$200.1M	$171.4M	$142.5M
YoY Change	4.62%	20.29%	16.8%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$148.6M	$163.6M	$31.60M
YoY Change	-8.33%	417.72%	-1.86%
Total Long-Term Liabilities	$149.4M	$164.1M	$31.60M
YoY Change	-7.86%	419.25%	-1.86%
TOTAL LIABILITIES
Total Short-Term Liabilities	$200.1M	$171.4M	$142.5M
Total Long-Term Liabilities	$149.4M	$164.1M	$31.60M
Total Liabilities	$349.5M	$335.5M	$174.4M
YoY Change	-1.22%	92.37%	12.66%
SHAREHOLDERS EQUITY
Retained Earnings	$217.0M	$200.2M
YoY Change
Common Stock	$503.0K	$9.265M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$209.0M	$197.8M	$196.5M
YoY Change
Total Liabilities & Shareholders Equity	$558.5M	$533.2M	$370.8M
YoY Change	1.51%	43.81%	2.49%

Cashflow Statement

Concept	2021 Q1	2019 Q4	2018 Q4
OPERATING ACTIVITIES
Net Income	$6.700M	$4.800M	$6.900M
YoY Change	3.59%	-30.43%	-400.0%
Depreciation, Depletion And Amortization	$3.550M	$2.910M	$2.630M
YoY Change	20.63%	10.65%	18.47%
Cash From Operating Activities	$65.31M	$47.74M	$44.58M
YoY Change	-199.9%	7.09%	17.1%
INVESTING ACTIVITIES
Capital Expenditures	-$1.350M	-$4.140M	-$2.070M
YoY Change	-116.98%	100.0%	-52.85%
Acquisitions
YoY Change
Other Investing Activities		$0.00	$0.00
YoY Change
Cash From Investing Activities	-$1.350M	-$4.140M	-$2.070M
YoY Change	-83.02%	100.0%	-52.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-44.56M	-38.59M	-16.22M
YoY Change	-169.5%	137.92%	1505.94%
NET CHANGE
Cash From Operating Activities	65.31M	47.74M	44.58M
Cash From Investing Activities	-1.350M	-4.140M	-2.070M
Cash From Financing Activities	-44.56M	-38.59M	-16.22M
Net Change In Cash	19.40M	5.010M	26.29M
YoY Change	-297.54%	-80.94%	-19.53%
FREE CASH FLOW
Cash From Operating Activities	$65.31M	$47.74M	$44.58M
Capital Expenditures	-$1.350M	-$4.140M	-$2.070M
Free Cash Flow	$66.66M	$51.88M	$46.65M
YoY Change	-190.91%	11.21%	9.87%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001053706
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-01-02
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--01-02
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	000-24049
CY2021	dei	Entity Registrant Name EntityRegistrantName	CRA International, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MA
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	200 Clarendon Street
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Boston
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2372210
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	02116-5092
CY2021	dei	City Area Code CityAreaCode	617
CY2021	dei	Local Phone Number LocalPhoneNumber	425-3000
CY2021	dei	Security12b Title Security12bTitle	Common Stock, no par value
CY2021	dei	Trading Symbol TradingSymbol	CRAI
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	276800000	USD
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	7645430	shares
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	508373000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	451370000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	417648000	USD
CY2021	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	370709000	USD
CY2019	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	317761000	USD
CY2018	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	289185000	USD
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	90028000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	93613000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	89533000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	12840000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	10648000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	9995000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	34796000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	29348000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	28935000	USD
CY2021	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	USD
CY2018	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	258000	USD
CY2021	us-gaap	Interest Expense InterestExpense	1216000	USD
CY2019	us-gaap	Interest Expense InterestExpense	1254000	USD
CY2018	us-gaap	Interest Expense InterestExpense	647000	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	42000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1297000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	387000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	33622000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	26797000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	28933000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9115000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6050000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6461000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	24507000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	20747000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	22472000	USD
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CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-20000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	24507000	USD
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CY2018	us-gaap	Net Income Loss NetIncomeLoss	22492000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.14
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CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.76
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.07
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CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.61
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7768000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7866000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8107000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7948000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8167000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8570000	shares
CY2021	us-gaap	Profit Loss ProfitLoss	24507000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	20747000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	22472000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3280000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	831000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	21578000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	19774000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-20000	USD
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CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19794000	USD
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CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	62878000	USD
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CY2021Q1	us-gaap	Common Stock Value CommonStockValue	503000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	9265000	USD
CY2021Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	216999000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	200249000	USD
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-8483000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-11763000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	209019000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	197751000	USD
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	558510000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	533243000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	24507000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	20747000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	22472000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	12840000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	10648000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9996000	USD
CY2021	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	USD
CY2018	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	258000	USD
CY2021	crai	Deferred Rent Expense And Facility Liabilities DeferredRentExpenseAndFacilityLiabilities	142000	USD
CY2019	crai	Deferred Rent Expense And Facility Liabilities DeferredRentExpenseAndFacilityLiabilities	117000	USD
CY2018	crai	Deferred Rent Expense And Facility Liabilities DeferredRentExpenseAndFacilityLiabilities	3596000	USD
CY2021	crai	Right Of Use Asset Amortization RightOfUseAssetAmortization	12037000	USD
CY2019	crai	Right Of Use Asset Amortization RightOfUseAssetAmortization	10662000	USD
CY2018	crai	Right Of Use Asset Amortization RightOfUseAssetAmortization	0	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	352000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1114000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1159000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-829000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	3235000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	3461000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	4819000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-479000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	47000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-1410000	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-247000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	0	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	0	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1948000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	12759000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	14427000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	3940000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	2987000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1377000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2120000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-5502000	USD
CY2021	crai	Increase Decrease In Forgivable Loans IncreaseDecreaseInForgivableLoans	15868000	USD
CY2019	crai	Increase Decrease In Forgivable Loans IncreaseDecreaseInForgivableLoans	16331000	USD
CY2018	crai	Increase Decrease In Forgivable Loans IncreaseDecreaseInForgivableLoans	12277000	USD
CY2021	crai	Increase Decrease In Obligation Incentive Cash Awards IncreaseDecreaseInObligationIncentiveCashAwards	6602000	USD
CY2019	crai	Increase Decrease In Obligation Incentive Cash Awards IncreaseDecreaseInObligationIncentiveCashAwards	4839000	USD
CY2018	crai	Increase Decrease In Obligation Incentive Cash Awards IncreaseDecreaseInObligationIncentiveCashAwards	3206000	USD
CY2021	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	25336000	USD
CY2019	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	16194000	USD
CY2018	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	18786000	USD
CY2021	crai	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-10539000	USD
CY2019	crai	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-6162000	USD
CY2018	crai	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	54663000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	27832000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	36189000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17094000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16693000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	15447000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-17094000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16693000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-15447000	USD
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	2236000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3211000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	2166000	USD
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	77000000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	54000000	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	30161000	USD
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	77000000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	54000000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	30161000	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	862000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2176000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3946000	USD
CY2021	crai	Payments Of Dividends Equivalents PaymentsOfDividendsEquivalents	108000	USD
CY2019	crai	Payments Of Dividends Equivalents PaymentsOfDividendsEquivalents	246000	USD
CY2018	crai	Payments Of Dividends Equivalents PaymentsOfDividendsEquivalents	256000	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	7395000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	6539000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	5784000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	13371000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18068000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	27884000	USD
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	43000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-19500000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-23818000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-35747000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1969000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	290000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1002000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	20038000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-12389000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-16007000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25639000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	38028000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	54035000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	45677000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25639000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	38028000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	4749000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	4914000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	303000	USD
CY2021	crai	Capital Expenditures Paid By Third Party CapitalExpendituresPaidByThirdParty	0	USD
CY2019	crai	Capital Expenditures Paid By Third Party CapitalExpendituresPaidByThirdParty	156000	USD
CY2018	crai	Capital Expenditures Paid By Third Party CapitalExpendituresPaidByThirdParty	133000	USD
CY2021	us-gaap	Settlement Of Asset Retirement Obligations Through Noncash Payments Amount SettlementOfAssetRetirementObligationsThroughNoncashPaymentsAmount	155000	USD
CY2019	us-gaap	Settlement Of Asset Retirement Obligations Through Noncash Payments Amount SettlementOfAssetRetirementObligationsThroughNoncashPaymentsAmount	428000	USD
CY2018	us-gaap	Settlement Of Asset Retirement Obligations Through Noncash Payments Amount SettlementOfAssetRetirementObligationsThroughNoncashPaymentsAmount	223000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2640000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	57827000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2021	crai	Right Of Use Assets Related To Adoption RightOfUseAssetsRelatedToAdoption	0	USD
CY2019	crai	Right Of Use Assets Related To Adoption RightOfUseAssetsRelatedToAdoption	82329000	USD
CY2018	crai	Right Of Use Assets Related To Adoption RightOfUseAssetsRelatedToAdoption	0	USD
CY2021	crai	Lease Liabilities Related To Adoption Of Accounting Standard LeaseLiabilitiesRelatedToAdoptionOfAccountingStandard	0	USD
CY2019	crai	Lease Liabilities Related To Adoption Of Accounting Standard LeaseLiabilitiesRelatedToAdoptionOfAccountingStandard	106765000	USD
CY2018	crai	Lease Liabilities Related To Adoption Of Accounting Standard LeaseLiabilitiesRelatedToAdoptionOfAccountingStandard	0	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6535000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7590000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4813000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	1162000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1157000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	509000	USD
CY2021	crai	Cash Paid For Amounts Included In Operating Lease Liabilities CashPaidForAmountsIncludedInOperatingLeaseLiabilities	-20436000	USD
CY2019	crai	Cash Paid For Amounts Included In Operating Lease Liabilities CashPaidForAmountsIncludedInOperatingLeaseLiabilities	-14620000	USD
CY2018	crai	Cash Paid For Amounts Included In Operating Lease Liabilities CashPaidForAmountsIncludedInOperatingLeaseLiabilities	0	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	207229000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	207229000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	22472000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2698000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2166000	USD
CY2018	crai	Stock Issued During Period Value Share Based Compensation Employees StockIssuedDuringPeriodValueShareBasedCompensationEmployees	4819000	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3946000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	27616000	USD
CY2018	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	258000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	43000	USD
CY2018	crai	Dividends Share Based Compensation Net DividendsShareBasedCompensationNet	-21000	USD
CY2018	us-gaap	Dividends Paidinkind DividendsPaidinkind	256000	USD
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.71
CY2018	us-gaap	Dividends Cash DividendsCash	5784000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	196472000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	20747000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	831000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3211000	USD
CY2019	crai	Stock Issued During Period Value Share Based Compensation Employees And Non Employees StockIssuedDuringPeriodValueShareBasedCompensationEmployeesAndNonEmployees	3461000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2176000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	18068000	USD
CY2019	crai	Dividends Share Based Compensation Net DividendsShareBasedCompensationNet	-58000	USD
CY2019	us-gaap	Dividends Paidinkind DividendsPaidinkind	246000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.83
CY2019	us-gaap	Dividends Cash DividendsCash	6539000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	197751000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	197751000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	24507000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	3280000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2236000	USD
CY2021	crai	Stock Issued During Period Value Share Based Compensation Employees And Non Employees StockIssuedDuringPeriodValueShareBasedCompensationEmployeesAndNonEmployees	3235000	USD
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	862000	USD
CY2021	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	13371000	USD
CY2021	crai	Dividends Share Based Compensation Net DividendsShareBasedCompensationNet	51000	USD
CY2021	us-gaap	Dividends Paidinkind DividendsPaidinkind	108000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.95
CY2021	us-gaap	Dividends Cash DividendsCash	7395000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	209019000	USD
CY2021Q1	crai	Number Of Broad Areas Of Consulting Services NumberOfBroadAreasOfConsultingServices	2	broadArea
CY2021Q1	crai	Number Of Broad Areas Of Consulting Services NumberOfBroadAreasOfConsultingServices	2	broadArea
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	businessSegment
CY2021	us-gaap	Fiscal Period FiscalPeriod	<div style="margin-top:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Fiscal Year and Quarters</span></div><div style="margin-top:10pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">CRA's fiscal year end is the Saturday nearest December 31 of each year. CRA's fiscal years periodically contain 53 weeks rather than 52 weeks. Fiscal 2020 was a 53-week year. Fiscal 2019 and fiscal 2018 were 52-week years. CRA's fiscal quarter ends are determined as the last Saturday nearest the respective calendar quarter end.</span></div>
CY2021	crai	Number Of Weeks Periodically Contained In Fiscal Year NumberOfWeeksPeriodicallyContainedInFiscalYear	53	week
CY2021	crai	Number Of Weeks Periodically Contained In Fiscal Year NumberOfWeeksPeriodicallyContainedInFiscalYear	53	week
CY2018	crai	Number Of Weeks In Fiscal Year NumberOfWeeksInFiscalYear	52	week
CY2019	crai	Number Of Weeks In Fiscal Year NumberOfWeeksInFiscalYear	52	week
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Estimates</span></div><div style="margin-top:10pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("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 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, depreciation of property and equipment, measurement of operating lease right-of-use ("ROU") assets and liabilities, share-based compensation, valuation of the contingent consideration liability, valuation of acquired intangible assets, impairment of long-lived 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.</span></div>
CY2021Q1	crai	Number Of Financial Institutions Where Cash Accounts Are Concentrated NumberOfFinancialInstitutionsWhereCashAccountsAreConcentrated	2	institution
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	40000.00	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1300000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	400000	USD
CY2021	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1	unit
CY2021	crai	Number Of Trailing Quarters To Determine Control Premium NumberOfTrailingQuartersToDetermineControlPremium	4	quarter
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	508373000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	451370000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	417648000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	508373000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	451370000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	417648000	USD
CY2021Q1	crai	Allowance For Doubtful Accounts Variable Consideration And Allowances For Accounts Receivable AllowanceForDoubtfulAccountsVariableConsiderationAndAllowancesForAccountsReceivable	700000	USD
CY2019Q4	crai	Allowance For Doubtful Accounts Variable Consideration And Allowances For Accounts Receivable AllowanceForDoubtfulAccountsVariableConsiderationAndAllowancesForAccountsReceivable	400000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3838000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3764000	USD
CY2021	crai	Accounts Receivable Allowance For Credit Loss Increases To Reserves AccountsReceivableAllowanceForCreditLossIncreasesToReserves	2092000	USD
CY2019	crai	Accounts Receivable Allowance For Credit Loss Increases To Reserves AccountsReceivableAllowanceForCreditLossIncreasesToReserves	2926000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	2335000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	2852000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3595000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3838000	USD
CY2019Q4	crai	Allowance For Unbilled Services AllowanceForUnbilledServices	1503000	USD
CY2018Q4	crai	Allowance For Unbilled Services AllowanceForUnbilledServices	415000	USD
CY2021	crai	Allowance For Unbilled Services Increases To Reserves AllowanceForUnbilledServicesIncreasesToReserves	6847000	USD
CY2019	crai	Allowance For Unbilled Services Increases To Reserves AllowanceForUnbilledServicesIncreasesToReserves	5548000	USD
CY2021	crai	Allowance For Unbilled Services Amounts Written Off AllowanceForUnbilledServicesAmountsWrittenOff	7350000	USD
CY2019	crai	Allowance For Unbilled Services Amounts Written Off AllowanceForUnbilledServicesAmountsWrittenOff	4460000	USD
CY2021Q1	crai	Allowance For Unbilled Services AllowanceForUnbilledServices	1000000	USD
CY2019Q4	crai	Allowance For Unbilled Services AllowanceForUnbilledServices	1503000	USD
CY2021	crai	Reimbursable Expenses Subject To Reimbursement ReimbursableExpensesSubjectToReimbursement	61661000	USD
CY2019	crai	Reimbursable Expenses Subject To Reimbursement ReimbursableExpensesSubjectToReimbursement	54871000	USD
CY2018	crai	Reimbursable Expenses Subject To Reimbursement ReimbursableExpensesSubjectToReimbursement	48817000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5527000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	4007000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5453000	USD
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3533000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	5155000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	3149000	USD
CY2021	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	4503000	USD
CY2019	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	3603000	USD
CY2018	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	3346000	USD
CY2021	crai	Forgivable Loans Number Of Loan Balances Which Full Principal And Interest Were Not Forgiven ForgivableLoansNumberOfLoanBalancesWhichFullPrincipalAndInterestWereNotForgiven	0	loan
CY2018	crai	Forgivable Loans Number Of Loan Balances Which Full Principal And Interest Were Not Forgiven ForgivableLoansNumberOfLoanBalancesWhichFullPrincipalAndInterestWereNotForgiven	0	loan
CY2019	crai	Forgivable Loans Number Of Loan Balances Which Full Principal And Interest Were Not Forgiven ForgivableLoansNumberOfLoanBalancesWhichFullPrincipalAndInterestWereNotForgiven	0	loan
CY2019Q4	crai	Forgivable Loans ForgivableLoans	55141000	USD
CY2018Q4	crai	Forgivable Loans ForgivableLoans	40294000	USD
CY2021	crai	Forgivable Loans Advances ForgivableLoansAdvances	42418000	USD
CY2019	crai	Forgivable Loans Advances ForgivableLoansAdvances	35166000	USD
CY2021	crai	Forgivable Loans Repayments ForgivableLoansRepayments	0	USD
CY2019	crai	Forgivable Loans Repayments ForgivableLoansRepayments	1173000	USD
CY2021	crai	Forgivable Loans Reclassification To Other Assets ForgivableLoansReclassificationToOtherAssets	9713000	USD
CY2019	crai	Forgivable Loans Reclassification To Other Assets ForgivableLoansReclassificationToOtherAssets	1734000	USD
CY2021	crai	Forgivable Loans Amortization ForgivableLoansAmortization	26628000	USD
CY2019	crai	Forgivable Loans Amortization ForgivableLoansAmortization	17700000	USD
CY2021	crai	Forgivable Loans Translation Adjustments ForgivableLoansTranslationAdjustments	395000	USD
CY2019	crai	Forgivable Loans Translation Adjustments ForgivableLoansTranslationAdjustments	288000	USD
CY2021Q1	crai	Forgivable Loans ForgivableLoans	61613000	USD
CY2019Q4	crai	Forgivable Loans ForgivableLoans	55141000	USD
CY2021Q1	crai	Forgivable Loans Current ForgivableLoansCurrent	14749000	USD
CY2019Q4	crai	Forgivable Loans Current ForgivableLoansCurrent	6751000	USD
CY2021Q1	crai	Forgivable Loans Noncurrent ForgivableLoansNoncurrent	46864000	USD
CY2019Q4	crai	Forgivable Loans Noncurrent ForgivableLoansNoncurrent	48390000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	17803000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	15731000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	21052000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	908000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	511000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	6155000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	4461000	USD
CY2021	us-gaap	Lease Cost LeaseCost	24866000	USD
CY2019	us-gaap	Lease Cost LeaseCost	20703000	USD
CY2018	crai	Operating Lease Annual Base Rent OperatingLeaseAnnualBaseRent	13200000	USD
CY2021Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y7M6D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y7M6D
CY2021Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.036
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.037
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	18355000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	20823000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	21068000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	20788000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	76554000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	178640000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	25636000	USD
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	153004000	USD
CY2021Q1	crai	Lessee Operating Lease Lease Not Yet Commenced Amount LesseeOperatingLeaseLeaseNotYetCommencedAmount	0	USD
CY2019Q4	us-gaap	Goodwill Gross GoodwillGross	164921000	USD
CY2018Q4	us-gaap	Goodwill Gross GoodwillGross	164625000	USD
CY2019Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	76417000	USD
CY2018Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	76417000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	88504000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	88208000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	88208000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	683000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	296000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	89187000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	88504000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	88504000	USD
CY2020Q1	crai	Goodwill Decrease Due To Dissolution And Final Liquidation Of Subsidiaries GoodwillDecreaseDueToDissolutionAndFinalLiquidationOfSubsidiaries	4500000	USD
CY2021Q1	us-gaap	Goodwill Gross GoodwillGross	161100000	USD
CY2021Q1	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	71900000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2018	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	822000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	12400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	12444000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	7292000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5968000	USD
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	5108000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	6476000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1400000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1400000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1400000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	927000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	827000	USD
CY2021Q1	crai	Allocated Share Based Compensation Expense Current Accelerated Vesting Of Awards AllocatedShareBasedCompensationExpenseCurrentAcceleratedVestingOfAwards	2176000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	822000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	822000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	888000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	5108000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	107579000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	100579000	USD
CY2021Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	44701000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	39284000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	62878000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	61295000	USD
CY2021	us-gaap	Depreciation Depreciation	11400000	USD
CY2019	us-gaap	Depreciation Depreciation	9200000	USD
CY2018	us-gaap	Depreciation Depreciation	8600000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	62878000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	61295000	USD
CY2021Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	123540000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	99993000	USD
CY2021Q1	us-gaap	Taxes Payable Current TaxesPayableCurrent	1927000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	430000	USD
CY2019Q4	crai	Allocated Share Based Compensation Expense Current Accelerated Vesting Of Awards AllocatedShareBasedCompensationExpenseCurrentAcceleratedVestingOfAwards	9961000	USD
CY2021Q1	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	1541000	USD
CY2019Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	2077000	USD
CY2021Q1	crai	Accrued Project Costs Current AccruedProjectCostsCurrent	3988000	USD
CY2019Q4	crai	Accrued Project Costs Current AccruedProjectCostsCurrent	3201000	USD
CY2021Q1	crai	Accrued Lease Hold Improvements Current AccruedLeaseHoldImprovementsCurrent	52000	USD
CY2019Q4	crai	Accrued Lease Hold Improvements Current AccruedLeaseHoldImprovementsCurrent	2166000	USD
CY2021Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3152000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3473000	USD
CY2021Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	136376000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	121301000	USD
CY2021Q1	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	102600000	USD
CY2019Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	81200000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1335000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	26054000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	20778000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	21118000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	7568000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	6019000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	7815000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	33622000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	26797000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	28933000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4039000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4252000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4015000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1119000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1487000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2627000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1838000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1788000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8001000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7209000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7290000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1170000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-869000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-384000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	309000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	331000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-88000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-365000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-621000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.271
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-357000	USD
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-1114000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	1159000	USD
CY2018	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	829000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9115000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6050000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6461000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.058
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.055
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.049
CY2021	crai	Effective Income Tax Rate Reconciliation Nondeductible Expense State Law Changes Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseStateLawChangesPercent	0.002
CY2019	crai	Effective Income Tax Rate Reconciliation Nondeductible Expense State Law Changes Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseStateLawChangesPercent	0
CY2018	crai	Effective Income Tax Rate Reconciliation Nondeductible Expense State Law Changes Percent EffectiveIncomeTaxRateReconciliationNondeductibleExpenseStateLawChangesPercent	0.009
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.018
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.050
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.063
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.017
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.013
CY2021	crai	Effective Income Tax Rate Reconciliation Non Deductible Expense Executive Compensation EffectiveIncomeTaxRateReconciliationNonDeductibleExpenseExecutiveCompensation	0.016
CY2019	crai	Effective Income Tax Rate Reconciliation Non Deductible Expense Executive Compensation EffectiveIncomeTaxRateReconciliationNonDeductibleExpenseExecutiveCompensation	0.016
CY2018	crai	Effective Income Tax Rate Reconciliation Non Deductible Expense Executive Compensation EffectiveIncomeTaxRateReconciliationNonDeductibleExpenseExecutiveCompensation	0.010
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.001
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.025
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.011
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.226
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.223
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	15453000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	12842000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	1535000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	2023000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	194000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	335000	USD
CY2021Q1	crai	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Lease Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLeaseLiabilities	38146000	USD
CY2019Q4	crai	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Lease Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLeaseLiabilities	39747000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	79000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	119000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	55407000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	55066000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	55407000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	55066000	USD
CY2021Q1	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	3523000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	3650000	USD
CY2021Q1	crai	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	30761000	USD
CY2019Q4	crai	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	33012000	USD
CY2021Q1	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	11595000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7690000	USD
CY2021Q1	crai	Deferred Tax Liabilities Prepaid And Other DeferredTaxLiabilitiesPrepaidAndOther	586000	USD
CY2019Q4	crai	Deferred Tax Liabilities Prepaid And Other DeferredTaxLiabilitiesPrepaidAndOther	548000	USD
CY2021Q1	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	46465000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	44900000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	8942000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	10166000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	242000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	867000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	43000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	25000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	82000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	600000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	203000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	242000	USD
CY2021Q1	crai	Unrecognized Tax Benefits Before Adjustments UnrecognizedTaxBenefitsBeforeAdjustments	200000	USD
CY2021Q1	crai	Unrecognized Tax Benefits Before Adjustments UnrecognizedTaxBenefitsBeforeAdjustments	200000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	200000	USD
CY2021Q1	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	200000	USD
CY2021Q1	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	300000	USD
CY2021Q1	crai	Deferred Tax Liability Cares Act DeferredTaxLiabilityCARESAct	2700000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3200000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3500000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4800000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	24507000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	20747000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	22492000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	93000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	55000	USD
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	108000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	24414000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	20692000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	22384000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7768000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7866000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8107000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	180000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	301000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	463000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7948000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8167000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8570000	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	80211000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	62367000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	29612000	shares
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4500000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3900000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3500000	USD

Files In Submission

Name	View Source	Status
0001053706-21-000008-index-headers.html	Edgar Link	pending
0001053706-21-000008-index.html	Edgar Link	pending
0001053706-21-000008.txt	Edgar Link	pending
0001053706-21-000008-xbrl.zip	Edgar Link	pending
crai-20210102.htm	Edgar Link	pending
crai-20210102.xsd	Edgar Link	pending
crai-20210102_cal.xml	Edgar Link	unprocessable
crai-20210102_def.xml	Edgar Link	unprocessable
crai-20210102_g1.jpg	Edgar Link	pending
crai-20210102_htm.xml	Edgar Link	completed
crai-20210102_lab.xml	Edgar Link	unprocessable
crai-20210102_pre.xml	Edgar Link	unprocessable
craiq4-202010xkexx211.htm	Edgar Link	pending
craiq4-202010xkexx231.htm	Edgar Link	pending
craiq4-202010xkexx232.htm	Edgar Link	pending
craiq4-202010xkexx311.htm	Edgar Link	pending
craiq4-202010xkexx312.htm	Edgar Link	pending
craiq4-202010xkexx321.htm	Edgar Link	pending
craiq4-202010xkexx322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
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R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$CRAI
CRA INTERNATIONAL, INC. Stock $crai

2021 Q1 Form 10-K Financial Statement

#000105370621000008 Filed on March 04, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CRAI CRA INTERNATIONAL, INC. Stock $crai

2021 Q1 Form 10-K Financial Statement

#000105370621000008 Filed on March 04, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CRAI
CRA INTERNATIONAL, INC. Stock $crai