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Management Incentive Plans - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Recognized stock-based compensation | $ 1,068 | $ 1,766
RSUs |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting period | 3 years |
Number of awards granted (in shares) | 178,633 | 268,851
Unrecognized stock-based compensation expense | $ 1,100 |
Period to recognized stock-based compensation expense | 1 year 6 months 7 days |
Aggregate fair value of vested awards | $ 1,100 | $ 600
PRSUs |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting period | 3 years |
Number of awards granted (in shares) | 96,500 | 6,000
PRSUs | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of shares to be issued under grant | 0.00% |
PRSUs | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of shares to be issued under grant | 150.00% |
MRSUs |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of awards granted (in shares) | 0 | 0
Unrecognized stock-based compensation expense | $ 200 |
Period to recognized stock-based compensation expense | 1 year 3 months 3 days |
Restated 2016 Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Common stock, capital shares reserved for future issuance (in shares) | 1,650,000 |
Restated 2016 Plan | PRSUs |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of awards granted (in shares) | 96,500 | 6,000

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