Collaboration Agreements - Additional Information (Detail) |
3 Months Ended | 9 Months Ended |
|---|---|---|
|
Sep. 30, 2019
USD ($)
|
Sep. 30, 2019
USD ($)
|
|
| Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||
| Revenue | $ 141,000 | $ 231,000 |
| Minimum | ||
| Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||
| Other short-term collaboration agreements performance obligations period | 1 month | |
| Maximum | ||
| Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||
| Other short-term collaboration agreements performance obligations period | 2 months | |
| Other Current Liabilities | ||
| Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||
| Deferred revenue | 400,000 | $ 400,000 |
| Collaboration Agreements | ||
| Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||
| Revenue | $ 141,000 | $ 231,000 |