REVENUE RECOGNITION AND RELATED ALLOWANCES (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015
Valuation and Qualifying Accounts Disclosure
Beginning balance	$ 13,586
Ending balance	22,385
Chargebacks
Valuation and Qualifying Accounts Disclosure
Beginning balance	11,381	$ 6,865
Accruals/Adjustments	74,373	34,516
Credits Taken Against Reserve	(67,449)	(32,973)
Ending balance	18,305	8,408
Medicaid Rebates
Valuation and Qualifying Accounts Disclosure
Beginning balance	4,631	2,264
Accruals/Adjustments	8,013	4,785
Credits Taken Against Reserve	(6,193)	(2,621)
Ending balance	6,451	4,428
Returns
Valuation and Qualifying Accounts Disclosure
Beginning balance	2,648	1,445
Accruals/Adjustments	5,840	1,402
Credits Taken Against Reserve	(4,389)	(958)
Ending balance	4,099	1,889
Administrative Fees and Other Rebates
Valuation and Qualifying Accounts Disclosure
Beginning balance	1,653	1,487
Accruals/Adjustments	8,559	4,187
Credits Taken Against Reserve	(7,225)	(4,570)
Ending balance	2,987	1,104
Prompt Payment Discounts
Valuation and Qualifying Accounts Disclosure
Beginning balance	674	471
Accruals/Adjustments	3,743	1,942
Credits Taken Against Reserve	(3,023)	(1,813)
Ending balance	$ 1,394	$ 600

Amount of increase (decrease) in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from adjustments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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