Shareholders' Equity - Computation of Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic earnings (loss) per share:
Net income (loss)	$ 6,161	$ 5,094	$ (3,819)
Divided by:
Weighted average shares outstanding (in shares)	3,957,097	3,946,384	3,934,886
Basic earnings (loss) per common share (usd per share)	$ 1.56	$ 1.29	$ (0.97)
Diluted earnings (loss) per share:
Net income (loss) attributable to Common shareholders	$ 6,161	$ 5,094	$ (3,819)
Weighted average shares outstanding (in shares)	3,957,097	3,946,384	3,934,886
Effect of potentially dilutive restricted common shares (in shares)	5,801	6,270	0
Divided by:
Weighted average diluted shares outstanding (in shares)	3,962,898	3,952,654	3,934,886
Diluted earnings (loss) per share (usd per share)	$ 1.55	$ 1.29	$ (0.97)