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Equity Compensation (Tables)
 3 Months Ended
Mar. 31, 2021
Equity Compensation [Abstract]  
Schedule of Equity Compensation Expense and Related Income Tax Benefit Recognized The following table summarizes the equity compensation expense and related income tax benefit recognized in the Consolidated Statements of Income (in thousands): 
 Three Months Ended
March 31,
 20212020
Restricted awards:
Pre-tax compensation expense$1,549 $1,398 
Tax benefit395 356 
Restricted stock expense, net of tax$1,154 $1,042 
Performance awards:
Pre-tax compensation expense$946 $1,010 
Tax benefit241 258 
Performance award expense, net of tax$705 $752 
Schedule of Equity Compensation, Restricted Award Activity
The following table summarizes restricted award activity for the three months ended March 31, 2021:
Number of
Restricted
Awards (in
thousands)		Weighted
Average Grant
Date Fair
Value ($)
Nonvested at beginning of period367 $35.78 
Granted114 41.30 
Vested(107)34.96 
Forfeited(2)35.53 
Nonvested at end of period372 37.70 
Schedule of Equity Compensation, Performance Award Activity
The following table summarizes performance award activity for the three months ended March 31, 2021:
Number of
Performance
Awards (in
thousands)		Weighted
Average Grant
Date Fair
Value ($)
Nonvested at beginning of period262 $32.96 
Granted74 40.93 
Vested(100)33.04 
Forfeited— — 
Nonvested at end of period236 35.42