DISCONTINUED OPERATIONS - Operating Results of Discontinued Operations (Details) - PBM Services - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 15,466	$ 0	$ 32,790
Gross profit	0	3,722	0	7,358
Other operating expenses, net	(131)	3,647	(514)	9,689
Bad debt expense	0	(19)	0	(46)
Income (loss) before income taxes	131	94	514	(2,285)
Income tax provision	56	0	206	0
Total income (loss) from discontinued operations, net of income taxes	$ 75	$ 94	$ 308	$ (2,285)