DISCONTINUED OPERATIONS - Summary of Operating Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Discontinued Operations
Bad debt expense	$ 23,697	$ 26,608	$ 42,444
PBM Services
Discontinued Operations
Revenue	0	0	44,375
Gross profit	0	0	9,763
Other operating expenses	0	1,015	5,444
Bad debt expense	0	0	(45)
(Loss) income from operations	0	(1,015)	4,364
Gain on sale before income taxes	0	0	(11,424)
Financial advisory fee and legal expenses	0	614	1,731
Other income and (expenses), net	(893)	4,922	928
Income (loss) before income taxes	(893)	(6,551)	13,129
Income tax expense (benefit)	0	0	206
Income (loss) from discontinued operations, net of income taxes	(893)	(6,551)	12,923
Home Health Business
Discontinued Operations
Revenue	0	0	0
Gross profit	0	0	0
Other operating expenses	0	0	417
(Loss) income from operations	0	0	(417)
Financial advisory fee and legal expenses	0	(44)	0
Other income and (expenses), net	0	(118)	861
Income (loss) before income taxes	0	162	(1,278)
Income tax expense (benefit)	0	0	0
Income (loss) from discontinued operations, net of income taxes	0	162	(1,278)
Pharmacy Services Asset Sale
Discontinued Operations
Revenue	0	0	0
Gross profit	0	0	0
Other operating expenses	0	185	4,485
Legal fees and settlement expense	0	2	1,312
Other income and (expenses), net	0	17	1,157
Income (loss) from discontinued operations, net of income taxes	$ 0	$ (204)	$ (6,954)