Shareholders' Equity - Calculation of earning per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Shareholders' Equity
Net (loss)/income	$ (810)	$ 325	$ 1,186	$ 541	$ (485)	$ 1,727
Weighted average common shares outstanding (basic)	2,432		2,402		2,435	2,398
Unvested restricted stock	7		13		7	13
Weighted average common shares outstanding (diluted)	2,439		2,415		2,442	2,411
Basic
Net (loss)/income per share	$ (0.33)		$ 0.49		$ (0.20)	$ 0.72
Diluted
Net (loss)/income per share	$ (0.33)		$ 0.49		$ (0.20)	$ 0.72