Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Preferred stock par value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, authorized (in shares)	40,000,000	40,000,000
Common stock, issue (in shares)	17,928,284	17,838,372
Common stock, outstanding (in shares)	7,508,593	7,602,113
Treasury stock, shares (in shares)	10,419,691	10,236,259