ACQUISITIONS InfuScience, Inc. (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								11 Months Ended	12 Months Ended					12 Months Ended				12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 1997	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 InfuScience, Inc. [Member]	Jul. 31, 2012 InfuScience, Inc. [Member]	Mar. 25, 2010 InfuScience, Inc. [Member]	Dec. 31, 2012 DS Pharmacy, Inc. [Member]	Feb. 01, 2014 DS Pharmacy, Inc. [Member]	Jul. 29, 2010 DS Pharmacy, Inc. [Member]	Dec. 31, 2012 Maximum [Member] InfuScience, Inc. [Member]	Dec. 31, 2012 Customer Relationships [Member] InfuScience, Inc. [Member]	Jul. 31, 2012 Customer Relationships [Member] InfuScience, Inc. [Member]	Dec. 31, 2012 Customer Lists [Member] DS Pharmacy, Inc. [Member]	Jul. 29, 2010 Customer Lists [Member] DS Pharmacy, Inc. [Member]	Dec. 31, 2012 Transitional Services Contract [Member] DS Pharmacy, Inc. [Member]	Jul. 29, 2010 Transitional Services Contract [Member] DS Pharmacy, Inc. [Member]	Dec. 31, 2012 Licensing Agreements [Member] DS Pharmacy, Inc. [Member]	Jul. 29, 2010 Licensing Agreements [Member] DS Pharmacy, Inc. [Member]
Business Acquisition [Line Items]
Health Care Organization, Revenue	$ 180,738	$ 170,365	$ 155,633	$ 158,264	$ 133,830	$ 131,575	$ 130,837	$ 155,901	$ 430,707	$ 662,637	$ 554,506	$ 16,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life												5 months							5 months		6 months		1 year		6 years
Acquired Finite-lived Intangible Asset, Amount																	8,669					270		1,040		7,359
Business Acquisition, Percentage of Voting Interests Acquired													100.00%
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount														7,700
Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents													23
Business Acquisition, Purchase Price Allocation, Current Assets, Receivables													4,938
Business Acquisition, Purchase Price Allocation, Current Assets, Inventory													586				469
Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets													371
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment													751				76
Business Acquisition, Purchase Price Allocation, Other Noncurrent Assets													349
Business Acquisition, Purchase Price Allocation, Current Liabilities													(4,422)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net													2,996				545
Goodwill	350,810			312,387					312,387	350,810	312,387		38,423
Business Combination, Consideration Transferred													41,419				9,214
Business Acquisition, Cost of Acquired Entity, Cash Paid													38,300				5,000
Business Acquisition, Cost of Acquired Entity, Purchase Price																		41,400
Business Acquisition, Contingent Consideration, Potential Cash Payment												3,000
Number of locations													5
Business Acquisition, Contingent Consideration, at Fair Value												3,100			2,900
Income (Loss) from Continuing Operations Attributable to Parent	1,419	605	2,023	(2,565)	334	1,640	1,015	4,293	67,675	8,340	424	200
Business Combination, Acquisition Related Costs									5,924	4,046	0				700
Business Combination, Contingent Consideration paid																2,900
Intangible Assets, Net (Excluding Goodwill)	$ 17,446			$ 19,622						$ 17,446	$ 19,622		$ 400							$ 400