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Share-Based Compensation - Restricted Stock (Details) - Restricted Stock
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2023
USD ($)
$ / shares
shares
Restricted Stock Activity  
Outstanding at the beginning of the period (in shares) | shares 50,506
Vested (in shares) | shares (18,380)
Forfeited (in shares) | shares (2,233)
Outstanding at the end of the period (in shares) | shares 29,893
Weighted-Average Grant-Date Fair Value  
Outstanding at the beginning of the period (in dollars per share) | $ / shares $ 89.12
Vested (in dollars per share) | $ / shares 90.00
Forfeited (in dollars per share) | $ / shares 90.00
Outstanding at the end of the period (in dollars per share) | $ / shares $ 88.51
Additional disclosures  
Total unrecognized compensation cost related to nonvested restricted stock and RSUs granted | $ $ 1.8
Weighted-average period over which unrecognized compensation cost is expected to be recognized 1 year 1 month 9 days
Total fair value of shares vested during the period | $ $ 1.5
Minimum  
Additional disclosures  
Vesting period 2 years
Maximum  
Additional disclosures  
Vesting period 4 years