Summary of Product Revenue Allowances and Reserve Categories (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Valuation Allowance [Line Items]
Beginning balance	$ 2,527
Provision	2,570
Payments or credits	(2,031)
Ending balance	3,066
Trade Allowances
Valuation Allowance [Line Items]
Beginning balance	72
Provision	255
Payments or credits	(228)
Ending balance	99
Rebates Chargebacks and Discounts
Valuation Allowance [Line Items]
Beginning balance	2,095
Provision	2,097
Payments or credits	(1,645)
Ending balance	2,547
Other Incentives/ Returns
Valuation Allowance [Line Items]
Beginning balance	360
Provision	218
Payments or credits	(158)
Ending balance	$ 420

Total of the provision for allowances and reserves in a given period, the valuation and qualifying accounts that are netted against gross revenue or that reflect a liability established to represent expected future costs.

No definition available.

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- Definition

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

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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- Definition

Total of the deductions 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 established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

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