Note 10 - Leases - Lease Information and Expenses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Lease liability	$ 2,358
Operating Lease, Right-of-Use Asset	$ 2,351
Weighted average remaining lease term (years) (Year)	7 years 40 days
Weighted average discount rate	3.02%
Operating lease expense	$ 218
Short-term lease expense	101
Total lease expense	319	223
Cash paid for amounts included in lease liabilities	211
Right-of-use assets obtained in exchange for operating lease liabilities commencing during the period	$ 1,837