ACQUISITIONS DS Pharmacy, Inc. (Details) (USD $) In Thousands, unless otherwise specified	11 Months Ended	12 Months Ended				12 Months Ended
	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 DS Pharmacy, Inc. [Member]	Jul. 29, 2010 DS Pharmacy, Inc. [Member]	Dec. 31, 2012 Customer Lists [Member] DS Pharmacy, Inc. [Member]	Jul. 29, 2010 Customer Lists [Member] DS Pharmacy, Inc. [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						6 months
Acquired Finite-lived Intangible Asset, Amount					$ 8,669		$ 270
Business Combination, Acquisition Related Costs	5,924	4,046	0	700
Business Acquisition, Cost of Acquired Entity, Cash Paid					5,000
Business Acquisition, Purchase Price Allocation, Current Assets, Inventory					469
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment					76
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					545
Business Combination, Consideration Transferred					9,214
Business Acquisition, Contingent Consideration, at Fair Value				$ 2,900