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STOCK COMPENSATION - RESTRICTED STOCK AND PERFORMANCE SHARE GRANTS (Tables)
12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Performance Share Grants with Performance Conditions
The following is a summary of the Company's performance share grants with performance conditions as of the year ended December 31, 2023:
Performance Share Grants with Performance Conditions
Target performance191,849 
Maximum performance265,234 
Schedule of Stock Grant Activity
The following is a summary of the Company’s stock grant activity, both time and performance unit grants, assuming target achievement for outstanding performance grants for the following twelve-month periods ended:
December 31, 2023December 31, 2022December 31, 2021
Stock Grants Outstanding Beginning of the Year at Target Achievement234,899 683,645 840,307 
New Stock Grants/Additional shares due to achievement in excess of target321,026 180,034 63,622 
Vested Grants(260,070)(384,112)(196,328)
Expired/Forfeited Grants(47,087)(244,668)(23,956)
Stock Grants Outstanding End of Period at Target Achievement248,768 234,899 683,645 
Schedule of Assumptions Used to Determine The Price of Market-Based Performance Condition Grants
The following is a summary of the assumptions used to determine the fair value of the Company's market-based Performance Condition Grants outstanding for the year ended December 31, 2023:
($ in thousands except for share prices)
Grant date12/11/202003/18/202112/16/202103/17/202212/14/202206/16/202306/16/2023
Vesting end12/31/202303/18/202412/16/202403/17/202512/14/202512/31/202312/31/2025
Share price at target achievement$17.07$20.02$21.58$20.43$21.99$19.24$20.72
Expected volatility29.25%30.30%31.29%31.54%32.14%27.09%26.58%
Risk-free interest rate0.19%0.33%0.92%2.13%3.84%5.2%4.38%
Simulated Monte Carlo share price$15.59$18.82$21.48$21.75$26.00$13.18$20.24
Shares granted3,62810,9053,53613,3384,61333,03528,545
Total fair value of award$57$205$76$290$120$435$578
Schedule of Stock Compensation Costs for Employee and NDSI Plans
The following table summarizes stock compensation costs for the Company's 1998 Stock Incentive Plan, or the Employee 1998 Plan, and NDSI Plan for the following periods:
Employee 1998 Plan ($ in thousands):December 31, 2023December 31, 2022December 31, 2021
    Expensed$2,731 $2,281 $3,742 
    Capitalized482 335 460 
3,213 2,616 4,202 
NDSI Plan521 596 529 
$3,734 $3,212 $4,731