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v3.22.1

Subsequent Events (Details) - USD ($) $ in Thousands |  | 1 Months Ended
--- | --- | ---
Apr. 21, 2022 | Apr. 30, 2022 | Apr. 30, 2021
Subsequent Event [Line Items] |  |  |
Purchase price |  |  | $ 1,500
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Purchase price |  | $ 1,800 |
2022 Streeterville Note | Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Principal amount | $ 2,000 |  |
Issue discount | 215 |  |
Purchase price | 1,800 |  |
Unamortized debt issuance costs | $ 15 |  |
Interest rate | 8.00% |  |
Maximum redemption amount | $ 225 |  |
Percentage increase due to deferral of redemption option | 1.50% |  |
Percentage increase if delisted from Nasdaq | 15.00% |  |
2022 Streeterville Note | Subsequent Event | Debt Instrument, Redemption, Period One |  |  |
Subsequent Event [Line Items] |  |  |
Prepayment premium | 5.00% |  |
Debt prepayment limit, percent | 50.00% |  |
2022 Streeterville Note | Subsequent Event | Debt Instrument, Redemption, Period Two |  |  |
Subsequent Event [Line Items] |  |  |
Prepayment premium | 7.50% |  |

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