DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Valuation and Qualifying Accounts Disclosure
Ending balance	$ 8,708	$ 5,104
Chargebacks
Valuation and Qualifying Accounts Disclosure
Beginning balance	4,076	5,662
Accruals/Adjustments	35,740	28,009
Credits Taken Against Reserve	(32,951)	(29,595)
Ending balance	6,865	4,076
Returns
Valuation and Qualifying Accounts Disclosure
Beginning balance	736	411
Accruals/Adjustments	1,493	1,595
Credits Taken Against Reserve	(784)	(1,270)
Ending balance	1,445	736
Medicaid Rebates
Valuation and Qualifying Accounts Disclosure
Beginning balance	253	180
Accruals/Adjustments	2,692	333
Credits Taken Against Reserve	(681)	(260)
Ending balance	2,264	253
Administrative Fees and Other Rebates
Valuation and Qualifying Accounts Disclosure
Beginning balance	735	231
Accruals/Adjustments	5,212	2,355
Credits Taken Against Reserve	(4,460)	(1,851)
Ending balance	1,487	735
Prompt Payment Discounts
Valuation and Qualifying Accounts Disclosure
Beginning balance	332	242
Accruals/Adjustments	1,820	1,129
Credits Taken Against Reserve	(1,681)	(1,039)
Ending balance	$ 471	$ 332

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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Total of 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 established to represent expected future costs.

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