Line Of Credit Facility, Additional Capacity

No definition available.

Name:	ccrn_LineOfCreditFacilityAdditionalCapacity
Namespace Prefix:	ccrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Periodic Payment, Percentage of Principal

+ References

No definition available.

+ Details

Name:	ccrn_LineOfCreditFacilityPeriodicPaymentPercentageofPrincipal
Namespace Prefix:	ccrn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

Name:	us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- 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

SUBSEQUENT EVENTS - Subsequent Credit Renewal And Upsizing (Details)		6 Months Ended
	Aug. 01, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Subsequent Event [Line Items]
Borrowings on debt		$ 0	$ 97,200,000
Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Face amount	$ 215,000,000
Borrowings on debt	106,500,000
Line of Credit [Member] \| Amended And Restated Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity	115,000,000
Borrowings on debt	6,500,000
Term Loan [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Face amount	100,000,000.0
Additional capacity	$ 50,000,000.0
Eurodollar Loans [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Interest margin	2.25%
LIBOR Index Rate Loans [Member] \| Line of Credit [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Interest margin	2.25%
Base Rate Loans [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Interest margin	1.25%
Fiscal Quarters Ending September 30, 2017 through June 30, 2018 [Member] \| Maximum [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Consolidated Net Leverage Ratio	3.50
Fiscal Quarters Ending September 30, 2018 through June 30, 2019 [Member] \| Maximum [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Consolidated Net Leverage Ratio	3.25
Each Fiscal Quarter Ending Thereafter [Member] \| Maximum [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Consolidated Net Leverage Ratio	3.00
First Four Installments [Member] \| Term Loan [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Periodic payment, percentage of principal	5.00%
Next Eight Installments [Member] \| Term Loan [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Periodic payment, percentage of principal	7.50%
Remaining Installments [Member] \| Term Loan [Member] \| Amended And Restated Credit Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Periodic payment, percentage of principal	10.00%