Note 9 - Financial Instruments With Off-balance Sheet Risk - Financial Instruments With Credit Risk (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Commitments to extend credit	$ 129,278
Unused Line of Credit [Member]
Commitments to extend credit	69,310
Undisbursed Construction Loans [Member]
Commitments to extend credit	26,945
Home Equity Lines of Credit [Member]
Commitments to extend credit	19,753
Future Loan Commitments [Member]
Commitments to extend credit	12,309
Financial Standy Letter of Credit [Member]
Commitments to extend credit	$ 961