Consolidated Balance Sheets (Parentheticals) - $ / shares shares in Thousands	Dec. 31, 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
Treasury stock, shares (in shares)	5,478	5,068