Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Preferred stock, par value (in dollars per share)	$ 0.01
Preferred stock, shares authorized (in shares)	3,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	47,000,000	47,000,000
Common stock, shares issued (in shares)	23,446,444	23,055,633
Common stock, shares outstanding (in shares)	23,446,444	23,055,633
Treasury stock, shares (in shares)	205,485	205,485
Series A Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	2,445,598	2,445,598
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series B Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	650,000	854,753
Preferred stock, shares outstanding (in shares)	650,000	854,753