Other License Agreements and Acquired Product Rights - Additional Information (Detail) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Feb. 29, 2016 |
Oct. 07, 2010 |
Aug. 31, 2015 |
Sep. 30, 2013 |
Dec. 31, 2015 |
|
| Kunwha License Agreement [Member] | |||||
| Other License Agreements And Acquired Product Rights [Line Items] | |||||
| Expiration date of the agreement | Aug. 31, 2015 | Jul. 23, 2027 | |||
| Upfront payment | $ 300 | ||||
| Up-front payment net of tax | 250 | ||||
| Milestone payments | 1,300 | ||||
| Milestone payments net of tax | $ 1,100 | ||||
| Milestone payment received | $ 300 | ||||
| TTY License and Supply Agreement [Member] | |||||
| Other License Agreements And Acquired Product Rights [Line Items] | |||||
| Upfront payment | $ 300 | ||||
| Milestone payments | $ 1,300 | ||||
| Milestone payment received | $ 300 | ||||
| Term of the agreement | 15 years | ||||
| TTY License and Supply Agreement [Member] | Subsequent Event [Member] | |||||
| Other License Agreements And Acquired Product Rights [Line Items] | |||||
| Milestone payment received | $ 200 |