Note 13 - Leases (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Operating Lease, Right-of-Use Asset	$ 2,954,000
Operating Lease, Liability, Total	2,999,000
Finance Lease, Liability, Total		$ 0
Operating Lease, Expense	$ 201,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	4 years
Operating Lease, Weighted Average Discount Rate, Percent	4.35%