OPERATING AND REPORTABLE SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Product revenue	$ 241,020	$ 225,277		$ 480,067	$ 441,180
Service revenue	21,343	21,848		43,977	45,238
Total revenue	262,363	247,125		524,044	486,418
Adjusted EBITDA by Segment before corporate overhead:	(2,534)	11,015		3,786	20,175
Interest expense, net	(9,080)	$ (9,135)		(18,243)	(19,634)
Loss on sale of assets	(628)		$ 0	(628)
Income tax (expense) benefit	19,921	$ (3,063)		17,993	(6,554)
Depreciation	(4,130)	(3,958)		(8,434)	(7,794)
Amortization of intangibles	(1,489)	(1,620)		(2,979)	(3,323)
Impairment of goodwill	(238,000)	0		(238,000)	0
Stock-based compensation expense	(1,162)	(1,998)		(2,819)	(4,884)
Acquisition and integration expenses	(259)	(5,333)		(479)	(11,832)
Restructuring and other expenses	(5,803)	(4,519)		(9,266)	(10,021)
Loss from continuing operations, net of income taxes	(243,164)	(18,611)		(259,069)	(43,867)
Total Assets	577,149			577,149		$ 824,713
Operating Segments
Segment Reporting Information [Line Items]
Adjusted EBITDA by Segment before corporate overhead:	5,877	18,031		19,965	34,667
Operating Segments | Infusion Services
Segment Reporting Information [Line Items]
Product revenue	241,020	225,277		480,067	441,180
Service revenue	5,957	5,271		11,187	10,437
Total revenue	246,977	230,548		491,254	451,617
Adjusted EBITDA by Segment before corporate overhead:	4,140	16,194		16,839	31,155
Impairment of goodwill				(238,000)
Total Assets	510,566			510,566		755,955
Operating Segments | PBM Services
Segment Reporting Information [Line Items]
Service revenue	15,386	16,577		32,790	34,801
Adjusted EBITDA by Segment before corporate overhead:	1,737	1,837		3,126	3,512
Impairment of goodwill				0
Total Assets	26,702			26,702		29,147
Operating Segments | Corporate
Segment Reporting Information [Line Items]
Total Assets	39,881			39,881		$ 39,611
Corporate
Segment Reporting Information [Line Items]
Corporate overhead	$ (8,411)	$ (7,016)		$ (16,179)	$ (14,492)