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Restructuring - Narrative (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jun. 30, 2021 USD ($) | Apr. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Aug. 23, 2022 d $ / shares | Jun. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Jun. 30, 2020 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring expense (recovery) |  |  |  |  |  | $ 0 | $ 1 | $ 0 | $ (21) |  |  |  |  |
Purchase price | $ 1,800 |  |  | $ 1,500 |  |  |  |  |  |  |  |  |  |
Closing bid price of common stock (in USD per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 1.00 |  |  |  |
Number of consecutive days for which the bid price was below threshold | d |  |  |  |  |  |  |  |  |  | 30 |  |  |  |
Stockholders' equity |  | $ 6,209 | $ 5,603 |  | $ 4,255 | $ 1,526 | $ 4,502 | $ 1,526 | $ 4,502 |  | $ 4,171 | $ 3,432 | $ 3,278 | $ 1,714
Warrant liability - modification |  |  |  |  | $ 1,400 |  |  |  |  |  |  |  |  |
December 2021 Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock and warrants |  | $ 4,000 |  |  |  |  |  |  |  |  |  |  |  |
Investor Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock and warrants |  |  | $ 4,500 |  |  |  |  |  |  |  |  |  |  |

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