Note 16 - Commitments - Lease Cost (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating right-of-use lease asset amortization	$ 501,000	$ 471,000
Financing lease asset amortization	0	0
Related interest expense	0	0
Total expense during twelve months ended December 31	$ 501,000	$ 471,000