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Consolidated Balance Sheets (Parentheticals) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Trade, allowance $ 7,717 $ 5,381 $ 4,526 $ 3,482
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01    
Preferred stock, authorized (in shares) 10,000,000 10,000,000    
Preferred stock, issued (in shares) 0 0    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01    
Common stock, authorized (in shares) 50,000,000 50,000,000    
Common stock, issued (in shares) 22,317,671 22,293,687    
Common stock, outstanding (in shares) 22,021,341 22,166,450    
Treasury shares (in shares) 296,330 127,237