DISCONTINUED OPERATIONS - Carrying Values of Assets and Liabilities of PBM Services Business (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Aug. 27, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current assets	$ 0		$ 9,550
PBM Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net accounts receivable		$ 7,163
Total current assets		7,163
Property and equipment, net		175
Goodwill		12,744
Total assets		20,082
Claims payable		6,950
Total liabilities		6,950
Net assets		$ 13,132