OPERATING AND REPORTABLE SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total revenue	$ 243,959	$ 239,300	$ 190,631	$ 730,377	$ 543,974
Adjusted EBITDA	(4,719)		18,897	29,948	56,000
Interest expense, net	(9,563)		(7,183)	(29,197)	(20,169)
Loss on extinguishment of debt	0		(15,898)	0	(15,898)
Income tax (expense) benefit	(1,930)		13	(8,484)	42
Depreciation	(4,205)		(3,225)	(11,999)	(8,169)
Amortization of intangibles	(1,620)		(1,009)	(4,943)	(4,801)
Stock-based compensation expense	(1,753)		(1,427)	(6,637)	(7,260)
Acquisition and integration expenses	(2,922)		(4,890)	(14,754)	(13,025)
Restructuring and other expenses and investments	(2,970)		(1,551)	(12,991)	(4,604)
Loss from continuing operations, net of income taxes	(37,575)		(23,756)	(81,442)	(41,415)
Total Assets	858,843			858,843		936,858
Infusion Services
Segment Reporting Information [Line Items]
Product revenue	226,421		169,011	667,601	469,594
Service Revenue	5,122		5,614	15,559	15,282
Total revenue	231,543		174,625	683,160	484,876
Adjusted EBITDA	(6,344)		14,623	24,811	40,615
Total Assets	783,658			783,658		793,475
PBM Services
Segment Reporting Information [Line Items]
Service Revenue	12,416		16,006	47,217	59,098
Adjusted EBITDA	1,625		4,274	5,137	15,385
Total Assets	29,009			29,009		25,239
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA	(7,893)		(7,483)	(22,385)	(23,531)
Total Assets	46,169			46,169		53,169
Discontinued Operations
Segment Reporting Information [Line Items]
Total Assets	0			0		64,959
Assets associated with discontinued operations, not sold
Segment Reporting Information [Line Items]
Total Assets	$ 7			$ 7		$ 16