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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Compensation cost not yet recognized | $ 8,695 |  | $ 8,695 |
Stock-based compensation expense | $ 1,320 | $ 2,311 | $ 2,402 | $ 4,807
Restricted Stock Units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 3 years |
Market performance thresholds period |  |  | 3 years |
Restricted Stock Units (RSUs) | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance target, percentage |  |  | 0.00% |
Restricted Stock Units (RSUs) | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Performance target, percentage |  |  | 100.00% |
Restricted Stock Units (RSUs) | Director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  |  | 1 year |
Restricted Stock Units (RSUs) | 2015 Incentive Award Plan | 2015 Incentive Award Plan approved on June 19, 2015 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares authorized (shares) | 3,000,000 |  | 3,000,000 |
Number of shares available for grant (shares) | 1,044,738 |  | 1,044,738 |

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