REVENUE RECOGNITION AND RELATED ALLOWANCES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure
Beginning balance			$ 8,708
Ending balance	8,096		8,708
Chargebacks
Valuation and Qualifying Accounts Disclosure
Beginning balance	6,865	4,076
Accruals/Adjustments	10,260	7,090
Credits Taken Against Reserve	(10,526)	(7,357)
Ending balance	6,599	3,809
Medicaid Rebates
Valuation and Qualifying Accounts Disclosure
Beginning balance	2,264	253
Accruals/Adjustments	953	158
Credits Taken Against Reserve	(1,140)	(141)
Ending balance	2,077	270
Returns
Valuation and Qualifying Accounts Disclosure
Beginning balance	1,445	736
Accruals/Adjustments	566	258
Credits Taken Against Reserve	(194)	(145)
Ending balance	1,817	849
Administrative Fees and Other Rebates
Valuation and Qualifying Accounts Disclosure
Beginning balance	1,487	735
Accruals/Adjustments	1,472	970
Credits Taken Against Reserve	(1,825)	(853)
Ending balance	1,134	852
Prompt Payment Discounts
Valuation and Qualifying Accounts Disclosure
Beginning balance	471	332
Accruals/Adjustments	609	347
Credits Taken Against Reserve	(602)	(370)
Ending balance	$ 478	$ 309

Total of the adjustments in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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