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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2022
Dec. 31, 2021
Shareholders' equity:    
Preferred stock par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 4,800,000 4,800,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 20,000,000 20,000,000
Common stock, shares issued (in shares) 13,956,725 13,917,731
Common stock, shares outstanding (in shares) 9,911,883 9,872,889
Treasury stock (in shares) 4,044,842 4,044,842
Series A Preferred Stock [Member]    
Shareholders' equity:    
Preferred stock par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 200,000 200,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0