COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Equity [Abstract]
Loss on currency fluctuations	$ 1.3	$ 1.3

Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Before Tax

No definition available.

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