Note 13 - Leases (Details Textual)	3 Months Ended
	Mar. 31, 2019 USD ($)
Operating Lease, Right-of-Use Asset	$ 3,251,000
Operating Lease, Liability, Total	3,295,000
Finance Lease, Liability, Total	0
Operating Lease, Expense	$ 201,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 255 days
Operating Lease, Weighted Average Discount Rate, Percent	4.32%