Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares shares in Thousands	Sep. 30, 2022	Dec. 31, 2021
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	1,000	1,000
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	83,333	83,333
Common stock, shares issued (in shares)	21,573	21,573
Common stock, shares outstanding (in shares)	21,573	21,573
Treasury stock, shares (in shares)	5,235	5,068