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STOCK OWNERSHIP AND BENEFIT PLANS (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Total Stock-based Compensation Expense The following table sets forth the total stock-based compensation expense included in the Consolidated Statements of Operations for the years ended December 31: 
 202120202019
Cost of products sold$604 $652 $620 
General and administrative expenses5,360 4,408 4,052 
Selling and distribution expenses610 615 532 
Stock-based compensation expense, net of income taxes6,574 5,675 5,204 
Earnings per share impact   
Basic$0.37 $0.38 $0.36 
Diluted$0.37 $0.38 $0.36 
Summary of the Activity of Nonvested Shares of Restricted Stock
A summary of the activity of our nonvested shares of RSAs issued is as follows:
2016 Plan
SharesWeighted Average
Grant Date
Fair Value
Balance at December 31, 2019291,480 $25.12 
Granted100,882 34.07 
Vested(135,709)26.20 
Forfeited(7,088)37.08 
Balance at December 31, 2020249,565 $27.81 
Granted120,872 50.48 
Vested(140,537)26.96 
Forfeited(250)45.47 
Balance at December 31, 2021229,650 $40.26 
Summary of the Activity of Nonvested Restricted Stock Units A summary of the activity of our nonvested RSUs issued under the 2016 Plan is as follows:
2016 Plan
SharesWeighted Average
Grant Date
Fair Value
Balance at December 31, 201987,059 $26.05 
Granted27,730 35.29 
Vested(39,009)23.53 
Forfeited(4,340)15.65 
Balance at December 31, 202071,440 $31.65 
Granted12,989 67.78 
Vested(32,131)29.95 
Forfeited— — 
Balance at December 31, 202152,298 $41.67 
Schedule of the Activity of Nonvested Performance Stock Units A summary of the activity of our nonvested PSUs issued under the 2016 Plan is as follows:
SharesWeighted Average
Grant Date
Fair Value
Balance at December 31, 201963,640 $32.97 
Granted45,948 49.93 
Vested(46,000)18.18 
Forfeited(7,478)43.17 
Balance at December 31, 202056,110 $57.63 
Granted44,861 59.65 
Vested(40,000)26.47 
Forfeited— — 
Balance at December 31, 202160,971 $79.56 
Schedule of Total Unrecognized Stock-based Compensation Related to Unvested Awards As of December 31, 2021, total unrecognized stock-based compensation related to unvested awards was as follows:
Unrecognized stock compensationWeighted-average recognition period
Unvested RSAs$6,042 1.6 years
Unvested RSUs$1,087 1.1 years
Unvested PSUs$2,306 1.3 years
Schedule of Deferred Compensation Plan
The balances related to the deferred compensation plan are as follows for the years ended December 31:
Consolidated Balance Sheet location20212020
Deferred compensation assetsOther assets$13,812 $7,596 
Deferred compensation obligationsOther long-term liabilities$15,944 $11,894