OPERATING AND REPORTABLE SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 239,643	$ 181,129
Adjusted EBITDA	16,528	18,104
Interest expense, net	(10,499)	(6,478)
Income tax benefit	(3,491)	224
Depreciation	(3,836)	(2,418)
Amortization of intangibles	(1,703)	(2,082)
Stock-based compensation expense	(2,886)	(1,973)
Acquisition and integration expenses	(6,499)	(4,623)
Restructuring and other expenses and investments	(5,560)	(1,279)
Income (Loss) from Continuing Operations Attributable to Parent	(25,422)	(8,441)
Assets	900,076		936,858
Infusion Services
Segment Reporting Information [Line Items]
Product Revenue	215,900	150,024
Service Revenue	5,519	4,353
Revenues	221,419	154,377
Adjusted EBITDA	14,853	11,909
Assets	808,871		793,475
PBM Services [Member]
Segment Reporting Information [Line Items]
Service Revenue	18,224	26,752
Adjusted EBITDA	1,675	6,195
Assets	31,475		25,239
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA	(7,476)	(7,916)
Assets	59,714		53,169
Discontinued Operations
Segment Reporting Information [Line Items]
Assets	0		64,959
Assets associated with discontinued operations, not sold
Segment Reporting Information [Line Items]
Assets	$ 16		$ 16