SEGMENT DATA - Information on Operating Segments and Reconciliation to Loss From Operations (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	$ 209,200	$ 200,717	$ 607,128	$ 615,577
Contribution income (loss)	16,986	17,911	47,702	55,087
Corporate overhead	10,975	10,937	34,744	32,399
Depreciation and amortization	2,907	2,892	9,448	8,764
Acquisition-related contingent consideration	(426)	16	74	449
Acquisition and integration costs	0	70	311	261
Restructuring costs	1,607	1,351	2,884	1,979
Legal settlement charges	0	0	1,600	0
Impairment charges	1,804	0	16,306	0
Income (loss) from operations	119	2,645	(17,665)	11,235
Nurse And Allied Staffing [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	184,974	175,945	541,398	539,488
Contribution income (loss)	16,097	16,507	46,504	50,064
Physician Staffing [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	20,407	21,158	54,594	64,052
Contribution income (loss)	811	1,307	1,724	4,190
Search [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	3,819	3,614	11,136	12,037
Contribution income (loss)	$ 78	$ 97	$ (526)	$ 833

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Operating Income Loss Before D And A Acquisition And Integration Contingent Consideration Restructuring Legal Impairment And Corporate Overheard

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Segment Reporting Unallocated Corporate Expenses

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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