ACQUISITIONS InfuScience, Inc. (Details) (USD $)	0 Months Ended		12 Months Ended
	Jul. 31, 2012		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2012 location
Acquisitions
Goodwill			$ 573,323,000	$ 571,337,000	$ 317,026,000
InfuScience, Inc.
Acquisitions
Ownership interest acquired (as a percent)	100.00%					100.00%
Cash purchase price paid	38,300,000					38,300,000
Number of infusion centers	5					5
Total possible contingent consideration increase	3,000,000					3,000,000
Contingent consideration performance period (in months)	24 months
Initial fair value of contingent consideration	2,900,000					2,900,000
Increase in contingent consideration				100,000
Contingent payments on achievement of expected operating results			1,300,000	1,700,000
Cash	23,000					23,000
Accounts receivable	4,938,000					4,938,000
Inventories	586,000					586,000
Other current assets	371,000					371,000
Property and equipment	751,000					751,000
Identifiable intangible assets	400,000	[1]				400,000	[1]
Other non-current assets	349,000					349,000
Current liabilities	(4,428,000)					(4,428,000)
Total identifiable net assets	2,990,000					2,990,000
Goodwill	38,429,000					38,429,000
Total cash and fair value of contingent consideration	41,419,000					41,419,000
Goodwill estimated to be deductible for income tax purposes	7,700,000					7,700,000
Revenues			52,200,000	46,700,000	16,500,000
Income (loss) from continuing operations			5,000,000	4,400,000	(1,700,000)
InfuScience, Inc. | Customer relationships
Acquisitions
Identifiable intangible assets	$ 400,000					$ 400,000
Estimated useful lives	5 months

[1] Weighted- Average Useful Lives AmountsRecognized at the Closing DateCustomer relationships5 months $400Total identifiable intangible assets acquired $400