XML 93 R74.htm IDEA: XBRL DOCUMENT v3.8.0.1

Subsequent Events (Details) - USD ($)	Feb. 28, 2018	Feb. 15, 2018	May 03, 2017	Mar. 21, 2016
Subsequent Events
Amount of stock authorized to repurchase			$ 20,000,000	$ 20,000,000
Subsequent Events
Subsequent Events
Amount of stock authorized to repurchase		$ 20,000,000
Common stock quarterly cash dividend declared (in dollars per share)		$ 0.17
Subsequent Events | New York, New York
Subsequent Events
Lease termination fee	$ 525,000
Long term lease obligations reduced	$ 2,700,000
Remaining lease term	9 years

X

- Definition

Obligation reduced for lease payments from finance lease, classified as noncurrent.

+ References

No definition available.

+ Details

Name:	crai_FinanceLeaseLiabilityNoncurrentReduced
Namespace Prefix:	crai_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Remaining term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	crai_LesseeFinanceLeaseRemainingTerm
Namespace Prefix:	crai_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of fee on termination of lease before expiration of lease term.

+ References

No definition available.

+ Details

Name:	crai_TerminationOfLeaseFee
Namespace Prefix:	crai_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=crai_NewYorkNewYorkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: