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Stock-Based Compensation Plans (Tables)
 9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of Components of Stock Compensation Expense
The components of stock-based compensation expense were as follows:
Three months ended September 30,Nine months ended September 30,
2023202220232022
(in thousands)(in thousands)
2023 Incentive Stock Plan$3,843 $3,098 $10,557 $10,732 
Employee Stock Purchase Plan28 48 113 84 
Total Stock Compensation Expense$3,871 $3,146 $10,670 $10,816 
Schedule of Restricted Stock Activity
The following table summarizes the restricted stock activity during the nine months ended September 30, 2023:
Shares
Balance of unvested shares as of December 31, 2022495,948 
Shares granted335,100 
Shares forfeited(1,999)
Shares vested(337,027)
Balance of unvested shares as of September 30, 2023492,022