DISCONTINUED OPERATIONS - Operating Results of PBM Services Business (Details) - PBM Services - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 11,585	$ 12,501	$ 44,375	$ 47,467
Gross profit	2,405	4,236	9,763	13,599
Selling, general and administrative expenses	1,168	2,613	5,444	8,466
Bad debt expense	0	(2)	(45)	(4)
Income (loss) from operations	1,237	1,625	4,364	5,137
Gain on sale before income taxes	(11,424)	0	(11,424)	0
Financial advisory fee and legal expenses	1,828	0	1,828	0
Other costs and expenses	353	(4)	353	(6)
Income (loss) before income taxes	10,480	1,629	13,607	5,143
Income tax expense (benefit)	1,384	0	1,384	0
Income (loss) from discontinued operations, net of income taxes	$ 9,096	$ 1,629	$ 12,223	$ 5,143