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Share-Based Compensation - Performance Share Unit Activity (Details) - Performance Shares Units - $ / shares
6 Months Ended
Dec. 31, 2021
Jun. 30, 2022
Shares    
Unvested, Beginning balance (in shares)   52,025
Granted (in shares) 29,840 31,370
Vested (in shares)   0
Forfeited (in shares)   (8,080)
Unvested, Ending balance (in shares) 52,025 75,315
Weighted-Average Grant Date Fair Value    
Unvested, Beginning balance (in dollars per share)   $ 236.75
Granted (in dollars per share)   235.54
Vested (in dollars per share)  
Forfeited (in dollars per share)   235.97
Unvested, Ending balance (in dollars per share) $ 236.75 $ 236.61