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Earnings per share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Basis loss per share:    
Net loss attributable to Common shareholders $ (299) $ (699)
Divided by:    
Weighted average shares outstanding (in shares) 3,976,073 3,965,186
Basic loss per share of common stock (usd per share) $ (0.08) $ (0.18)
Diluted loss per share:    
Net loss attributable to Common shareholders $ (299) $ (699)
Weighted average shares outstanding (in shares) 3,976,073 3,965,186
Effect of potentially dilutive restricted common shares (in shares) 0 0
Divided by:    
Weighted average diluted shares outstanding (in shares) 3,976,073 3,965,186
Diluted loss per share of common stock (usd per share) $ (0.08) $ (0.18)
Restricted Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive restricted shares of common stock (in shares) 22,269 491