OPERATING AND REPORTABLE SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues	$ 190,733	$ 155,901	$ 389,804	$ 311,534
Adjusted EBITDA	20,210	15,465	39,607	30,426
Interest expense, net	(6,508)	(6,639)	(12,986)	(13,208)
Income tax expense (benefit)	(498)	(364)	(556)	138
Depreciation	(2,570)	(2,050)	(5,029)	(3,981)
Amortization of intangibles	(1,710)	(878)	(3,792)	(1,757)
Stock-based compensation expense	(3,860)	(1,745)	(5,833)	(2,711)
Acquisition,integration, severance and other employee expenses	(3,512)	(636)	(8,135)	(808)
Restructuring and other expenses and investments	(1,737)	(988)	(3,015)	(1,375)
Loss from continuing operations, net of income taxes	(8,317)	(4,293)	(15,787)	(6,316)
Assets	746,712		746,712		642,376
Infusion Services [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Goods, Gross	150,559	108,557	300,583	215,360
Sales Revenue, Services, Other	5,606	2,416	9,959	4,667
Revenues	156,165	110,973	310,542	220,027
Adjusted EBITDA	14,193	8,026	26,508	15,809
Assets	534,571		534,571		438,623
Home Health Services [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Services, Other	18,228	16,860	36,169	33,571
Adjusted EBITDA	1,097	1,075	1,980	2,155
Assets	63,366		63,366		62,403
PBM Services [Member]
Segment Reporting Information [Line Items]
Sales Revenue, Services, Other	16,340	28,068	43,093	57,936
Adjusted EBITDA	4,920	6,364	11,119	12,462
Assets	33,453		33,453		36,354
Corporate [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	(8,132)	(6,458)	(16,048)	(13,040)
Assets	113,039		113,039		95,813
Assets associated with discontinued operations, not sold [Member]
Segment Reporting Information [Line Items]
Assets	$ 2,283		$ 2,283		$ 9,183