Equity Incentive Plans - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||||||
| Total stock-based compensation | $ 113 | $ 23 | $ 286 | $ 41 | $ 57 | $ 78 |
| Cost of sales | ||||||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||||||
| Total stock-based compensation | 2 | |||||
| Research and development | ||||||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||||||
| Total stock-based compensation | 32 | 4 | 82 | 11 | 6 | 30 |
| Sales and marketing | ||||||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||||||
| Total stock-based compensation | 1 | 6 | 2 | 7 | 1 | 2 |
| General and administrative | ||||||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||||||
| Total stock-based compensation | $ 80 | $ 13 | $ 202 | $ 23 | $ 50 | $ 44 |