Note 10 - Leases - Present Information About Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Right-of-use assets	$ 729
Weighted average remaining lease term (years) (Year)	8 years 21 days
Weighted average discount rate	2.39%
Operating lease expense	$ 73
Short-term lease expense	97
Total lease expense	170
Cash paid for amounts included in lease liabilities	73
Other Liabilities [Member]
Lease liabilities	$ 729