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Share-Based Compensation Plans (Restricted Stock Units Activity) (Details) - Restricted stock units - Officer - $ / shares
12 Months Ended
Feb. 10, 2021
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]    
Unvested at the beginning of year (in shares)   0
Granted (in shares) 10,441 10,441
Vested (in shares)   0
Forfeited (in shares)   0
Unvested at the end of year (in shares)   10,441
Unvested at the beginning of year, Weighted-Average Grant-Date Fair Value (in dollars per share)   $ 0
Granted, Weighted-Average Grant-Date Fair Value (in dollars per share)   97.01
Vested, Weighted-Average Grant-Date Fair Value (in dollars per share)   0
Forfeited, Weighted-Average Grant-Date Fair Value (in dollars per share)   0
Unvested at the end of year, Weighted-Average Grant-Date Fair Value (in dollars per share)   $ 97.01