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STOCK BASED AND DEFERRED COMPENSATION (Tables)
 9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Summary of Compensation Expense and Stock Award Activity Below is a summary of stock-based compensation expense and stock award activity (dollars in thousands):
 Three Months Ended September 30,Nine Months Ended September 30,
 2023202220232022
Stock-based compensation expense$6,156 $6,852 $16,557 $16,897 
Non-vested shares granted4,151 13,478 184,563 278,340 
Performance-based non-vested shares granted — 3,322 42,964 43,326 
Performance-based shares issued in excess of target shares granted (1)
— — 26,167 37,146 
Restricted stock awards vested (includes performance-based awards)4,355 4,418 291,526 396,578 
(1)Performance-based shares that vested and were issued as a result of performance achievement exceeding the originally established targeted number of shares related to respective performance metrics.
Summary of Additional Information Regarding Stock Plan
The following table includes additional information regarding our stock compensation plan (dollars in thousands):
As of
 September 30, 2023December 31, 2022
Unrecognized stock-based compensation cost$32,844 $29,187 
Weighted average years expense recognition period1.971.98
Total equity awards outstanding (1)
703,415 803,769 
(1)Includes unvested restricted stock awards, restricted stock units and performance-based awards (assuming 100% target payout).