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STOCK-BASED COMPENSATION AND EQUITY (Tables)
12 Months Ended
Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Stock-Based Compensation Expense
The following table details total stock-based compensation expense for the years ended December 31, 2023, 2022 and 2021, included in the consolidated statements of operations:
(In thousands)202320222021
Costs of sales$745 $809 $990 
Operating expenses2,526 4,364 4,467 
Pre-tax stock-based compensation expense3,271 5,173 5,457 
Less: income tax effect(687)(1,086)(1,146)
Net (after tax) stock-based compensation expense$2,584 $4,087 $4,311 
Restricted stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Activity Under Restricted Stock Plans
A summary of restricted stock activity (including shares of restricted stock issued pursuant to the settlement of performance share awards) under the Plan during the years ended December 31, 2023, 2022 and 2021 is as follows:
Shares
Weighted-Average
Grant-Date
Fair Value
Unvested stock outstanding at January 1, 2021412,967 $28.87 
Granted153,700 31.22 
Vested(245,455)29.16 
Forfeited(6,329)29.10 
Unvested stock outstanding at December 31, 2021
314,883 $29.79 
Granted161,375 34.22 
Vested(181,405)29.79 
Forfeited(13,692)31.66 
Unvested stock outstanding at December 31, 2022
281,161 $32.24 
Granted210,351 26.44 
Vested(145,529)31.35 
Forfeited(2,668)29.23 
Unvested stock outstanding at December 31, 2023
343,315 $29.08 
Performance shares  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Activity Under Restricted Stock Plans
A summary of performance share award activity under the Plan for the years ended December 31, 2023, 2022 and 2021, is as follows, based on the target award amounts set forth in the performance share award agreements:
Shares
Weighted-Average
Grant-Date
Fair Value
Performance share awards outstanding at January 1, 2021252,852 $29.27 
Granted93,444 31.26 
Forfeited or unearned(20,373)29.92 
Vested and issued(75,971)30.50 
Performance share awards outstanding at December 31, 2021
249,952 $29.59 
Granted101,799 37.98 
Forfeited or unearned(72,059)32.74 
Performance share awards converted to restricted stock(27,317)31.75 
Performance share awards outstanding at December 31, 2022
252,375 $31.84 
Granted122,071 31.21 
Forfeited or unearned(100,655)27.46 
Vested and issued— — 
Performance share awards outstanding at December 31, 2023
273,791 $33.17