OPERATING AND REPORTABLE SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Product revenue	$ 239,047	$ 215,903
Service revenue	22,634	23,390
Revenue	261,681	239,293
Adjusted EBITDA by Segment before corporate overhead:	14,088	16,636
Corporate overhead	(7,768)	(7,476)
Interest expense, net	(9,163)	(10,499)
Income tax (expense) benefit	(1,928)	(3,491)
Depreciation	(4,304)	(3,836)
Amortization of intangibles	(1,490)	(1,703)
Stock-based compensation expense	(1,657)	(2,886)
Acquisition and integration expenses	(220)	(6,499)
Restructuring and other expenses and investments	(3,463)	(5,502)
Loss from continuing operations, net of income taxes	(15,905)	(25,256)
Total Assets	845,423		824,713
Infusion Services
Segment Reporting Information [Line Items]
Product revenue	239,047	215,903
Service revenue	5,391	5,166
Revenue	244,438	221,069
Adjusted EBITDA by Segment before corporate overhead:	12,699	14,961
Total Assets	756,417		755,955
PBM Services
Segment Reporting Information [Line Items]
Service revenue	17,243	18,224
Adjusted EBITDA by Segment before corporate overhead:	1,389	1,675
Total Assets	25,780		29,147
Corporate
Segment Reporting Information [Line Items]
Total Assets	$ 63,226		$ 39,611