Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
Preferred stock, par value (in dollars per share)	$ 0.001
Preferred stock, authorized (in shares)	10,000,000
Common stock, par value (in dollars per share)	$ 0.18	$ 0.18
Common stock, authorized (in shares)	350,000,000	350,000,000
Common stock, issued (in shares)	8,611,361	8,611,266
Common stock, outstanding (in shares)	8,611,361	8,611,266
Treasury stock, shares (in shares)	88,003	88,003
Series B Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	577	582
Preferred stock, outstanding (in shares)	577	582