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Segment Data - Additional Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
USD ($)
Aug. 31, 2015
USD ($)
Dec. 31, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2017
Dec. 31, 2017
USD ($)
segment
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Segment Reporting Information [Line Items]                
Number of operating segments | segment           3    
Loss on sale of business           $ 0 $ 0 $ 2,184
Impairment charges     $ 14,400 $ 24,300   $ 14,356 $ 24,311 2,100
Cross Country Education, LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations                
Segment Reporting Information [Line Items]                
Loss on sale of business   $ 2,200           $ 2,200
Physician Staffing Segment                
Segment Reporting Information [Line Items]                
Impairment charges $ 24,300              
Advantage RN, LLC | Physician Staffing Segment                
Segment Reporting Information [Line Items]                
Percent of business included in segment, less than         2.00%