Note 13 - Leases (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Operating Lease, Right-of-Use Asset	$ 2,728,000	$ 2,728,000
Operating Lease, Liability, Total	2,776,000	2,776,000
Finance Lease, Liability, Total			$ 0
Operating Lease, Expense	$ 201,000	$ 402,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 361 days	3 years 361 days
Operating Lease, Weighted Average Discount Rate, Percent	4.34%	4.34%