OPERATING AND REPORTABLE SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 247,125	$ 239,300	$ 172,323	$ 486,418	$ 353,343
Adjusted EBITDA	18,031		18,911	34,667	37,103
Interest expense, net	(9,135)		(6,508)	(19,634)	(12,986)
Income tax benefit	(3,063)		(146)	(6,554)	29
Depreciation	(3,958)		(2,527)	(7,794)	(4,945)
Amortization of intangibles	(1,620)		(1,710)	(3,323)	(3,792)
Stock-based compensation expense	(1,998)		(3,860)	(4,884)	(5,833)
Acquisition and integration expenses	(5,333)		(3,512)	(11,832)	(8,135)
Restructuring and other expenses and investments	(4,519)		(1,812)	(10,021)	(3,052)
Income (Loss) from Continuing Operations Attributable to Parent	(18,611)		(9,296)	(43,867)	(17,659)
Assets	883,822			883,822		936,858
Infusion Services
Segment Reporting Information [Line Items]
Product Revenue	225,277		150,559	441,180	300,583
Service Revenue	5,271		5,424	10,437	9,668
Revenues	230,548		155,983	451,617	310,251
Adjusted EBITDA	16,194		13,995	31,155	25,992
Assets	806,127			806,127		793,475
PBM Services
Segment Reporting Information [Line Items]
Service Revenue	16,577		16,340	34,801	43,092
Adjusted EBITDA	1,837		4,916	3,512	11,111
Assets	27,203			27,203		25,239
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA	(7,016)		(8,132)	(14,492)	(16,048)
Assets	50,485			50,485		53,169
Discontinued Operations
Segment Reporting Information [Line Items]
Assets	0			0		64,959
Assets associated with discontinued operations, not sold
Segment Reporting Information [Line Items]
Assets	$ 7			$ 7		$ 16