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GOODWILL, TRADE NAMES, AND OTHER INTANGIBLE ASSETS - Goodwill (Details) - USD ($)	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill	$ 101,066,000		$ 101,060,000
Nurse And Allied Staffing [Member]
Goodwill [Line Items]
Impairment of indefinite lived asset		$ 14,500,000
Increase (decrease) in goodwill		(2,400,000)
Goodwill	86,400,000
Physician Staffing [Member]
Goodwill [Line Items]
Goodwill	2,800,000
Search [Member]
Goodwill [Line Items]
Increase (decrease) in goodwill		2,400,000
Goodwill	11,900,000
Trade names [Member] \| Nurse And Allied Staffing [Member]
Goodwill [Line Items]
Amortization expense	0	100,000
Trade names [Member] \| Physician Staffing [Member]
Goodwill [Line Items]
Amortization expense	$ 300,000	$ 500,000