SEGMENT DATA - Information on Operating Segments and Reconciliation to Loss From Operations (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	$ 202,757	$ 204,572	$ 397,928	$ 414,860
Contribution income	16,438	18,604	30,716	37,176
Corporate overhead	11,439	10,810	23,769	21,462
Depreciation and amortization	3,557	2,963	6,541	5,872
Acquisition-related contingent consideration	253	220	500	433
Acquisition and integration costs	46	76	311	191
Restructuring costs	137	193	1,277	628
Legal settlement charges	1,600	0	1,600	0
Impairment charges	14,502	0	14,502	0
(Loss) income from operations	(15,096)	4,342	(17,784)	8,590
Nurse And Allied Staffing [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	180,787	178,934	356,424	363,543
Contribution income	16,111	16,970	30,407	33,557
Physician Staffing [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	18,028	21,334	34,187	42,894
Contribution income	508	1,383	913	2,883
Search [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue from services	3,942	4,304	7,317	8,423
Contribution income	$ (181)	$ 251	$ (604)	$ 736

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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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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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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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The net result for the period of deducting operating expenses from operating revenues.

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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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