ACQUISITIONS - Narrative (Details) - USD ($) $ in Thousands				3 Months Ended		21 Months Ended
	Apr. 01, 2016	Oct. 30, 2015	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016
Business Acquisition [Line Items]
Acquisition-related contingent consideration				$ 287	$ 0
Mediscan [Member]
Business Acquisition [Line Items]
Cash consideration negotiated		$ 28,000
Cash purchase price paid at closing		29,900
Fair value of shares		$ 4,700
Fair value of shares (in shares)		349,871
Contingent consideration, range of outcomes, high		$ 7,000
Medical Staffing Network [Member]
Business Acquisition [Line Items]
Deferred consideration			$ 2,500
Period of deferred consideration (in months)			21 months
Additional exit liabilities						$ 400
Subsequent Event [Member] | Medical Staffing Network [Member]
Business Acquisition [Line Items]
Acquisition-related contingent consideration	$ (2,100)