XML 37 R71.htm IDEA: XBRL DOCUMENT v2.4.1.9

Subsequent Event (Details) (Subsequent event., B P Hancock)	0 Months Ended
	Feb. 24, 2015	Feb. 24, 2015 sqft
Subsequent event. | B P Hancock
Subsequent Event
Additional lease area	10,057crai_OperatingLeasesAdditionalAreaTakenOnLease / us-gaap_CounterpartyNameAxis = crai_BPHancockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember	10,057crai_OperatingLeasesAdditionalAreaTakenOnLease / us-gaap_CounterpartyNameAxis = crai_BPHancockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Annual rate (in dollars per sq. ft.)	49crai_OperatingLeasesAnnualRate / us-gaap_CounterpartyNameAxis = crai_BPHancockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember	49crai_OperatingLeasesAnnualRate / us-gaap_CounterpartyNameAxis = crai_BPHancockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Lease extension term	3 years

X

- Definition

Represents the additional lease area to be taken by the entity.

+ References

No definition available.

+ Details

Name:	crai_OperatingLeasesAdditionalAreaTakenOnLease
Namespace Prefix:	crai_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the annual rate excluding customary operating costs and expenses to be incurred per unit by the entity.

+ References

No definition available.

+ Details

Name:	crai_OperatingLeasesAnnualRate
Namespace Prefix:	crai_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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