Note 10 - Leases - Lease Information and Expenses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Lease liability	$ 2,135
Operating Lease, Right-of-Use Asset	$ 2,131
Weighted average remaining lease term (years) (Year)	7 years 222 days
Weighted average discount rate	3.20%
Operating lease expense	$ 136
Short-term lease expense	72
Total lease expense	208	149
Cash paid for amounts included in lease liabilities	132
Right-of-use assets obtained in exchange for operating lease liabilities commencing during the period	$ 1,553