Note 5 - Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans and leases receivable	$ 270,928	$ 268,949
Gaming [Member]
Loans and leases receivable	22,083	19,899
Hotel/Motel [Member]
Loans and leases receivable	45,226	47,294
Real Estate, Construction [Member]
Loans and leases receivable	20,580	23,209
Real Estate, Mortgage [Member]
Loans and leases receivable	149,559	141,406
Commercial And Industrial Loan [Member]
Loans and leases receivable	27,460	30,626
Other Loan [Member]
Loans and leases receivable	$ 6,020	$ 6,515