Note 16 - Shareholders' Equity - Computation of Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Net (loss) income	$ (3,819)		$ (2,817)		$ 3,196
Weighted average shares outstanding (in shares)	3,934,886		3,921,783		3,904,052
Basic (loss) earnings per common share (in dollars per share)	$ (0.97)		$ (0.72)		$ 0.82
Net (loss) income attributable to Common shareholders	$ (3,819)		$ (2,817)		$ 3,196
Effect of potentially dilutive restricted common shares (in shares)		[1]		[2]	11,573
Weighted average diluted shares outstanding (in shares)	3,934,886		3,921,783		3,915,625
Diluted (loss) earnings per common share (in dollars per share)	$ (0.97)		$ (0.72)		$ 0.82

[1] The weighted average diluted shares outstanding does not include 3,039 anti-dilutive restricted common shares for the year ended December 31, 2020.

[2] The weighted average diluted shares outstanding does not include 3,555 anti-dilutive restricted common shares for the year ended December 31, 2019.