Note 12 - Leases (Details Textual)	12 Months Ended
	Dec. 31, 2019 USD ($)
Operating Lease, Right-of-Use Asset	$ 3,178,000
Operating Lease, Liability, Total	3,219,000
Finance Lease, Liability, Total	0
Operating Lease, Expense	$ 201,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 284 days
Operating Lease, Weighted Average Discount Rate, Percent	4.29%