CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
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	14,201,728	14,163,904
Treasury Stock, Shares	1,566,883	1,305,579
Common stock, shares, outstanding (in shares)	12,634,845	12,858,325