Note 7 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Expiry of Standby Letters of Credit Within One Year	$ 3,800	$ 3,800
Expiry of Standby Letter of Credit Thereafter	929	929
Reserve for Unfunded Commitments Included in Other Liabilities	$ 800	800		$ 695
Provision for Unfunded Commitments		$ 105	$ (100)
Real Estate Related Loans Representing Lease Portfolio	75.00%	75.00%		83.00%
Real Estate Related Loans Representing Lease Portfolio, Excluding PPP	85.00%	85.00%
Insurance Claims [Member] | Maximum [Member]
Loss Contingency, Estimate of Possible Loss	$ 225	$ 225
Other Noninterest Income [Member]
Provision for Unfunded Commitments	105
Other Liabilities [Member]
Reserve for Unfunded Commitments Included in Other Liabilities	$ 800	$ 800		$ 695