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Stock-Based Compensation - Restricted Shares (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Share based award vesting period 5 years    
Shares      
Nonvested at the beginning of the period (in shares) 0 25,000 79,560
Granted (in shares) 135,456 98,921 94,654
Vested (in shares) (135,456) (123,921) (138,635)
Forfeited or unearned (in shares) 0 0 (10,579)
Nonvested at the end of the period (in shares) 0 0 25,000
Weighted-Average Grant-Date Fair Value      
Nonvested at the beginning of the period, weighted-average grant-date fair value (in usd per share) $ 0 $ 7.23 $ 8.08
Granted, weighted-average grant-date fair value (in usd per share) 5.93 7.56 9.03
Vested, weighted-average grant-date fair value (in usd per share) 5.93 7.49 8.91
Forfeited or unearned, weighted-average grant-date fair value (in usd per share) 0 0 8.99
Nonvested at the end of the period, weighted-average grant-date fair value (in usd per share) $ 0 $ 0 $ 7.23
Restricted stock | Class A Non-Voting      
Weighted-Average Grant-Date Fair Value      
Share-based compensation expense $ 804,000 $ 825,000 $ 906,000
Unearned compensation cost $ 0