Note 2 - Summary of Significant Accounting Policies - Summary of Income and Share Amounts Utilized to Calculate Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income (loss) (in thousands)	$ 1,361	$ (1,095)
Weighted average common shares outstanding:
Basic (in shares)	19,731,498	21,417,628
Dilutive effect of restricted shares and options (in shares)	1,107,898
Diluted (in shares)	20,839,396	21,417,628