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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Stock Option Activity Under the Plan
The following is a summary of the Company’s stock option activity for the six months ended June 30, 2021:
Number of SharesWeighted-Average Exercise Price Per ShareWeighted-Average
Remaining Contractual Life (Years)
Aggregate Intrinsic Value
(Dollars in thousands)
Outstanding - January 1, 2021851,580 $15.25 
Granted— — 
Exercised— — 
Expired(16,703)17.12 
Forfeited— — 
Outstanding - June 30, 2021
834,877 $15.22 3.91$959 
Options exercisable - June 30, 2021
796,877 $15.12 3.85$959 
Summary of Restricted Stock and Performance Unit Activity Under the Plan
The following is a summary of the Company’s restricted stock and performance unit activity for the six months ended June 30, 2021:
Number of SharesWeighted-Average Grant Date Fair Value
Outstanding (unvested) - January 1, 20211,718,838 $10.73 
Granted652,909 15.65 
Vested(604,703)11.75 
Forfeited(135,053)13.18 
Outstanding (unvested) - June 30, 2021
1,631,991 $12.12