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Equity-Based Compensation Plans (Summary of Outstanding Performance Shares/Restricted Stock Units) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Performance stock awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Nonvested shares outstanding at January 1, Shares 253,266 196,007 142,238
Granted (in shares) 88,128 125,001 142,066
Vested (in shares) (129,666) (63,456) (75,048)
Forfeited (in shares) (9,281) (4,286) (13,249)
Nonvested shares outstanding at December 31, Shares 202,447 253,266 196,007
Total grant date fair value of awards vested during the year $ 4,910 $ 4,783 $ 4,041
Total fair value of awards vested during the year $ 12,015 $ 3,968 $ 3,561
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Nonvested shares outstanding at January 1, Weighted Average Grant Date Fair Value (in dollars per share) $ 41.36 $ 50.15 $ 63.91
Granted, Weighted Average Grant Date Fair Value (in dollars per share) 69.72 45.04 37.87
Vested, Weighted Average Grant Date Fair Value (in dollars per share) 37.87 75.37 53.85
Forfeited, Weighted Average Grant Date Fair Value (in dollars per share) 58.32 47.07 45.35
Nonvested shares outstanding at December 31, Weighted Average Grant Date Fair Value (in dollars per share) $ 55.16 $ 41.36 $ 50.15
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Nonvested shares outstanding at January 1, Shares 139,492 127,471 72,020
Granted (in shares) 66,107 68,263 104,488
Vested (in shares) (68,606) (52,908) (43,102)
Forfeited (in shares) (4,094) (3,334) (5,935)
Nonvested shares outstanding at December 31, Shares 132,899 139,492 127,471
Total grant date fair value of awards vested during the year $ 2,367 $ 2,354 $ 1,961
Total fair value of awards vested during the year $ 4,130 $ 2,196 $ 1,771
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Nonvested shares outstanding at January 1, Weighted Average Grant Date Fair Value (in dollars per share) $ 37.54 $ 39.83 $ 47.66
Granted, Weighted Average Grant Date Fair Value (in dollars per share) 54.52 38.77 36.80
Vested, Weighted Average Grant Date Fair Value (in dollars per share) 34.50 44.48 45.51
Forfeited, Weighted Average Grant Date Fair Value (in dollars per share) 49.35 40.20 40.26
Nonvested shares outstanding at December 31, Weighted Average Grant Date Fair Value (in dollars per share) $ 47.19 $ 37.54 $ 39.83