Product Revenues, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Product Revenue Allowance and Reserve [Roll Forward]
Product revenue allowance and reserve, beginning balance	$ 36,023
Provision related to current period sales	11,233
Adjustments related to prior period sales	(1,625)
Credits/payments made	(12,079)
Product revenue allowance and reserve, ending balance	33,552
Trade Allowances
Product Revenue Allowance and Reserve [Roll Forward]
Product revenue allowance and reserve, beginning balance	1,463
Provision related to current period sales	1,297
Adjustments related to prior period sales	(87)
Credits/payments made	(1,366)
Product revenue allowance and reserve, ending balance	1,307
Rebates, Chargebacks and Discounts
Product Revenue Allowance and Reserve [Roll Forward]
Product revenue allowance and reserve, beginning balance	29,102
Provision related to current period sales	9,027
Adjustments related to prior period sales	(1,128)
Credits/payments made	(7,162)
Product revenue allowance and reserve, ending balance	29,839
Product Returns
Product Revenue Allowance and Reserve [Roll Forward]
Product revenue allowance and reserve, beginning balance	4,713
Provision related to current period sales	79
Adjustments related to prior period sales	(410)
Credits/payments made	(2,788)
Product revenue allowance and reserve, ending balance	1,594
Other Incentives
Product Revenue Allowance and Reserve [Roll Forward]
Product revenue allowance and reserve, beginning balance	745
Provision related to current period sales	830
Adjustments related to prior period sales	0
Credits/payments made	(763)
Product revenue allowance and reserve, ending balance	$ 812

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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.

+ References

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.

+ References

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- Definition

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+ References

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