Note 12 - Stockholders' Equity - Basic and Diluted Earnings Per Share Calculation (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Weighted average shares outstanding for basic calculation (in shares)	2,838,000	2,083,000
Dilutive effect of restricted stock (in shares)	35,000	35,000
Weighted average shares outstanding for diluted calculation (in shares)	2,873,000	2,118,000