Note 10 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Amortization of right-of-use assets	$ 47	$ 20
Interest on lease liabilities	67	68
Operating lease costs	1,968	1,955
Total lease cost	$ 2,082	$ 2,043