Note 12 - Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 11 months 12 days		3 years 11 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	5.26%		5.26%
Operating Lease, Payments			$ 700	$ 600
Below Market Lease, Amortization Income, Remainder of Fiscal Year	$ 100		100
Below Market Lease, Amortization Income, Year One	100		100
Below Market Lease, Amortization Income, Year Two	100		100
Below Market Lease, Amortization Income, Year Three	100		100
Below Market Lease, Amortization Income, Year Four	100		100
Operating Lease, Lease Income, Total	3,341	$ 3,341	10,023	$ 10,023
General and Administrative Expense [Member]
Operating Lease, Cost	200		700
Variable Lease, Cost	$ 100		$ 100