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Stock-Based Compensation Plans - Market Stock Units (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
Number of Market Stock Units |  |
Outstanding at beginning of period (in shares) | 137,256 |
Granted (in shares) | 19,688 |
Exchanged for stock (in shares) | (28,804) |
Outstanding at end of period (in shares) | 128,140 | 137,256
MSUs |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock options expense | $ 700,000 |
Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Potential Shares From MSU Vest | 0.00% |
Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Potential Shares From MSU Vest | 150.00% |
Trading days | 60 days |
Number of Market Stock Units |  |
Outstanding at beginning of period (in shares) | 195,723 |
Granted (in shares) | 29,568 |
Exchanged for stock (in shares) | (42,811) |
Outstanding at end of period (in shares) | 182,480 | 195,723

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