Product Revenue Reserves and Allowances - Summary of Product Revenue Reserve and Allowance Categories (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($)
Valuation and Qualifying Accounts Disclosure [Line Items]
Provisions related to sales in the current year	$ 649
Adjustments related to sales in the prior year	0
Credits and payments made	(109)
Ending balance	540
Trade Allowances [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Provisions related to sales in the current year	153
Adjustments related to sales in the prior year	0
Credits and payments made	(15)
Ending balance	138
Rebates and Chargeback Discounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Provisions related to sales in the current year	456
Adjustments related to sales in the prior year	0
Credits and payments made	(94)
Ending balance	362
Product Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Provisions related to sales in the current year	32
Adjustments related to sales in the prior year	0
Ending balance	32
Other Incentives [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Provisions related to sales in the current year	8
Adjustments related to sales in the prior year	0
Ending balance	$ 8

Valuation allowances and reserves prior year adjustments.

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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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+ References

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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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+ References

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