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Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Summary of Activity
The following table summarizes the weighted-average assumptions used to determine the awards grant date fair value:
Three Months Ended March 31,
Restricted Shares and Performance Based Shares20232022
Expected quarterly dividends per share$0.3675 $0.3475 
Risk-free interest rate4.46 %1.46 %

The following table summarizes activity in restricted stock awards, including performance-based and market-based shares for the three months ended March 31, 2023:
Restricted Stock
SharesWeighted-
Average
Grant Date Fair Value
Outstanding at December 31, 2022182,446 $42.09 
Granted
172,853 44.78 
Released(171,538)43.98 
Forfeited
(565)42.26 
Outstanding at March 31, 2023183,196 $35.09 
The following table provides additional information concerning restricted stock activity, including performance-based and market-based shares:
Three Months Ended March 31,
Restricted Stock20232022
Weighted-average grant date fair value$44.78 $40.66 
Total fair value of restricted shares that vested (in thousands)$8,394 $6,906