Note 13 - Leases (Details Textual)	3 Months Ended	6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)
Operating Lease, Right-of-Use Asset	$ 3,094,000	$ 3,094,000
Operating Lease, Liability, Total	3,148,000	3,148,000
Finance Lease, Liability, Total	0	0
Operating Lease, Expense	$ 221,000	$ 425,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 8 months 1 day	3 years 8 months 1 day
Operating Lease, Weighted Average Discount Rate, Percent	4.07%	4.07%