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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Class A Common Stock
Common Stock
Class B Common Stock
Capital in Excess of Par Value
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Balance, beginning of period at Dec. 31, 2021 $ 352,116 $ 5,616 $ 1,567 $ 16,331 $ 336,778 $ (8,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock-based compensation 1,123 145   978    
Conversion of Class B to Class A shares 0 1 (1)      
Net income 12,582       12,582  
Cash dividends on Class A and Class B common stock (1,445)       (1,445)  
Reclassification adjustment to net income, net of tax 118         118
Balance, end of period at Mar. 31, 2022 364,494 5,762 1,566 17,309 347,915 (8,058)
Balance, beginning of period at Dec. 31, 2022 426,966 5,783 1,566 23,706 404,924 (9,013)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock-based compensation 564 161   403    
Net income 5,692       5,692  
Cash dividends on Class A and Class B common stock (1,557)       (1,557)  
Reclassification adjustment to net income, net of tax 21         21
Balance, end of period at Mar. 31, 2023 $ 431,686 $ 5,944 $ 1,566 $ 24,109 $ 409,059 $ (8,992)