Grants (Details) |
1 Months Ended | 3 Months Ended | 12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2019
USD ($)
|
Sep. 30, 2016
USD ($)
|
Jan. 31, 2016
USD ($)
|
Oct. 31, 2013
USD ($)
|
Dec. 31, 2019
USD ($)
contract_option
|
Sep. 30, 2019
USD ($)
|
Jun. 30, 2019
USD ($)
|
Mar. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
Sep. 30, 2018
USD ($)
|
Jun. 30, 2018
USD ($)
|
Mar. 31, 2018
USD ($)
|
Dec. 31, 2019
USD ($)
contract_option
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
|
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Total revenue | $ 14,055,000 | $ 17,046,000 | $ 13,083,000 | $ 16,025,000 | $ 35,421,000 | $ 41,757,000 | $ 28,851,000 | $ 29,039,000 | $ 60,209,000 | $ 135,068,000 | $ 205,825,000 | ||||
| Deferred revenue | 199,528,000 | 240,924,000 | 199,528,000 | 240,924,000 | |||||||||||
| Grant revenue | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Total revenue | 12,173,000 | 12,556,000 | 28,851,000 | ||||||||||||
| BARDA | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Award amount | $ 125,800,000 | ||||||||||||||
| Amount committed for funding | 117,300,000 | 117,300,000 | |||||||||||||
| Available funding | $ 8,500,000 | $ 8,500,000 | |||||||||||||
| BARDA | Initial base award | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Award amount | 8,200,000 | ||||||||||||||
| BARDA | Contract options | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Award amount | $ 117,600,000 | ||||||||||||||
| Number of contract options exercised | contract_option | 3 | 3 | |||||||||||||
| Number of contract options | contract_option | 4 | 4 | |||||||||||||
| BARDA | Grant revenue | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Total revenue | $ 7,600,000 | 6,800,000 | 20,100,000 | ||||||||||||
| The Bill & Melinda Gates Foundation | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Award amount | $ 100,000,000.0 | ||||||||||||||
| Available funding | $ 80,000,000 | 80,000,000 | |||||||||||||
| Deferred revenue | 1,500,000 | 800,000 | 1,500,000 | 800,000 | |||||||||||
| The Bill & Melinda Gates Foundation | Initial project | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Award amount | $ 1,100,000.0 | $ 20,000,000.0 | |||||||||||||
| Amount committed for funding | 21,100,000 | 21,100,000 | |||||||||||||
| The Bill & Melinda Gates Foundation | Grant revenue | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Total revenue | 3,400,000 | 1,400,000 | 1,100,000 | ||||||||||||
| DARPA | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Award amount | $ 24,600,000 | 19,700,000 | |||||||||||||
| Amount committed for funding | $ 19,700,000 | $ 19,700,000.0 | 19,700,000 | 19,700,000.0 | |||||||||||
| DARPA | Grant revenue | |||||||||||||||
| Disaggregation of Revenue [Line Items] | |||||||||||||||
| Total revenue | $ 500,000 | $ 3,500,000 | $ 7,700,000 | ||||||||||||