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Stock Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Summary of Changes in Company's Nonvested Restricted Stock Awards
A summary of changes in the Company’s nonvested Restricted Stock Awards (“RSAs”) under the Omnibus Incentive Plan for the three months ended March 31, 2022 were as follows:
Nonvested RSAsSharesWeighted-Average
Grant-Date
Fair Value
Nonvested at January 1, 2022363,404 67.56 
Granted5,502 87.63 
Vested(5,502)87.63 
Forfeited(487)49.69 
Nonvested at March 31, 2022362,917 67.59 
Summary of Changes in Company's Nonvested Restricted Stock Units
A summary of changes in the Company’s nonvested Restricted Stock Units (“RSUs”) under the Omnibus Incentive Plan for the three months ended March 31, 2022 were as follows:
Nonvested RSUsSharesWeighted-Average
Grant-Date
Fair Value
Nonvested at January 1, 2022122,470 52.07 
Granted— — 
Vested— — 
Forfeited— — 
Nonvested at March 31, 2022122,470 52.07 
Summary of Changes in Company's Nonvested Performance Stock Units
A summary of changes in the Company’s nonvested Market Based Performance Stock Units (“Market Based PSUs”) under the Omnibus Incentive Plan for the three months ended March 31, 2022 were as follows:
Nonvested Market Based PSUsSharesWeighted-Average
Grant-Date
Fair Value
Nonvested at January 1, 202294,984 $43.68 
Granted— — 
Vested— — 
Forfeited— — 
Nonvested at March 31, 202294,984 $43.68 
A summary of changes in the Company’s nonvested Performance Based Performance Stock Units (“Performance Based PSUs”) under the Omnibus Incentive Plan for the three months ended March 31, 2022 were as follows:
Nonvested Performance Based PSUsSharesWeighted Average
Grant Date
Fair Value
Nonvested at January 1, 2022259,383 $39.32 
Granted— — 
Vested— — 
Forfeited(748)32.50 
Nonvested at March 31, 2022258,635 $39.34 
Summary of Changes in Company's Stock Options
A summary of the changes in the Company’s stock options under the Omnibus Incentive Plan for the three months ended March 31, 2022 were as follows:
Stock OptionsSharesWeighted-Average
Exercise Price		Weighted-Average
Remaining
Contractual Term
(In Years)		Aggregate
Intrinsic Value
(In Thousands)
Outstanding at January 1, 2022166,755 $33.34 
Granted— — 
Exercised(3,703)25.80 
Forfeited or expired— — 
Outstanding at March 31, 2022163,052 $33.52 6.21$9,865 
Fully vested shares and shares expected to vest at March 31, 2022163,052 $33.52 6.21$9,865 
Shares exercisable at March 31, 2022100,291 $25.64 5.19$6,858 
Schedule of Information Related to Stock Options
Information related to the stock options for the three months ended March 31, 2022 and 2021 was as follows:
Three Months Ended March 31,
(Dollars in thousands, except per share amounts)20222021
Aggregate intrinsic value of options exercised$277 $577 
Cash received from option exercises— 191 
Tax benefit realized from option exercises58 121 
Weighted average fair value per share of options granted$— $—