Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Allowance for doubtful accounts	$ 184	$ 321
Unamortized loan costs	$ 14,578	$ 9,650
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000	100,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common Stock, Shares, Issued (in shares)	16,063,228	16,063,228
Common stock, shares outstanding (in shares)	16,063,228	16,063,228
Series A Cumulative Non-Voting Preferred Stock [Member]
Preferred stock, shares authorized (in shares)	140	140
Preferred stock, dividend rate, percentage	12.50%	12.50%