Collaboration and License Agreements - Schedule of Changes in Deferred Revenue Balance (Detail)
$ in Thousands |
12 Months Ended |
|
Dec. 31, 2021
USD ($)
|
|---|
| Research Collaboration and License Agreement [Member] | Bluebird bio to 2seventy [Member] |
|
| Deferred Revenue |
|
| Balance at December 31, 2020 |
$ 11,695
|
| Additions |
0
|
| Deductions |
2,970
|
| Balance at December 31, 2021 |
8,725
|
| Collaboration, Option and License Agreement [Member] | Gilead [Member] |
|
| Deferred Revenue |
|
| Balance at December 31, 2020 |
0
|
| Additions |
220
|
| Deductions |
(220)
|
| Balance at December 31, 2021 |
0
|
| Contract Asset |
|
| Balance at December 31, 2020 |
0
|
| Additions |
5,055
|
| Deductions |
(3,670)
|
| Balance at December 31, 2021 |
1,385
|
| C E P I Funding Agreement [Member] | CEPI [Member] |
|
| Deferred Revenue |
|
| Balance at December 31, 2021 |
9,400
|
| Funding Agreement [Member] | CEPI [Member] |
|
| Deferred Revenue |
|
| Balance at December 31, 2020 |
0
|
| Additions |
11,282
|
| Deductions |
1,903
|
| Balance at December 31, 2021 |
9,379
|
| Grant Agreement [Member] | Gates Foundation [Member] |
|
| Deferred Revenue |
|
| Balance at December 31, 2020 |
0
|
| Additions |
2,225
|
| Deductions |
0
|
| Balance at December 31, 2021 |
$ 2,225
|