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Stock-Based Compensation (Details) - USD ($) | 1 Months Ended | 3 Months Ended
--- | --- | ---
Feb. 29, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vested shares |  | 0 |
RSA |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Retainer fee, percentage | 50.00% |  |
Outstanding vested shares |  | 34,706 |
Vesting period | 1 year |  |
Number of shares granted |  | 0 |
Compensation costs |  | $ 17,000 | $ 19,000
Compensation cost expected to be recognized |  | $ 0 |
Weighted-average grant date fair value (in dollars per share) |  | $ 1.75 |
RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares granted |  | 0 |
Compensation costs |  | $ 145,000 | $ 0
Compensation cost expected to be recognized |  | $ 820,000 |
Forfeitures (in shares) |  | 500 |
Outstanding RSUs |  | 778,000 |
Unrecognized compensation costs, weighted average period |  | 2 years |

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