Revenues - Disaggregation of Accounts Receivable (Details) - USD ($) $ in Thousands |
Sep. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Disaggregation of Revenue [Line Items] | ||
| Allowance for doubtful accounts | $ 0 | $ 0 |
| Total accounts receivable | 4,909 | 2,903 |
| Commercial and other | Customer Concentration Risk | Accounts Receivable | ||
| Disaggregation of Revenue [Line Items] | ||
| Accounts receivable before allowance for credit loss | 325 | 1,568 |
| U.S. federal government and agencies | Customer Concentration Risk | Accounts Receivable | ||
| Disaggregation of Revenue [Line Items] | ||
| Accounts receivable before allowance for credit loss | $ 4,584 | $ 1,335 |
| X | ||||||||||
- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|