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Stock-Based Compensation Plans - Performance Awards (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock options expense | $ 0 | $ 0
PAs |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock options expense | $ 400,000 | $ 100,000
Number of Performance Awards |  |
Outstanding at beginning of period (in shares) | 10,852 |
Granted (in shares) | 15,723 |
Outstanding at end of period (in shares) | 26,575 | 10,852
PAs | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exchangeable percentage (as a percent) | 0.00% |
PAs | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exchangeable percentage (as a percent) | 150.00% |
Number of Performance Awards |  |
Outstanding at beginning of period (in shares) | 16,278 |
Granted (in shares) | 23,585 |
Outstanding at end of period (in shares) | 39,863 | 16,278

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