Note 13 - Leases (Details Textual)	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Operating Lease, Right-of-Use Asset	$ 3,089,000	$ 3,089,000
Operating Lease, Liability, Total	3,128,000	3,128,000
Finance Lease, Liability, Total	0	0
Operating Lease, Expense	$ 201,000	$ 402,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 277 days	4 years 277 days
Operating Lease, Weighted Average Discount Rate, Percent	4.32%	4.32%