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CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares
Mar. 31, 2022
Dec. 31, 2021
SHAREHOLDERS' EQUITY:    
Preferred shares, no par value (in dollars per share) $ 0 $ 0
Preferred Stock, Shares Authorized 1,000,000 1,000,000
Preferred Stock, Shares Outstanding 0 0
Common shares, no par value (in dollars per share) $ 0 $ 0
Common Stock, Shares Authorized 19,000,000 19,000,000
Common Stock, Shares, Issued 14,252,027 14,213,792
Treasury Stock, Shares 2,850,524 1,798,836
Common stock, shares, outstanding (in shares) 11,401,503 12,414,956