Note 1 - Accounting Policies (Details Textual) $ in Millions	Aug. 01, 2020 USD ($)	Jun. 30, 2020 USD ($)
Number of Banking Offices		26
Financing Receivable, Number of Customers With Payment Deferrals		729
Financing Receivable, Deferred Payments		$ 395
Subsequent Event [Member]
Financing Receivable, Deferred Payments	$ 219
Financing Receivable, Deferred Payments, Percentage of Portfolio	10.40%
Number of Paycheck Protection Program Loans Originated Through the CARES Act	2,200
Financing Receivable, Paycheck Protection Program Loans Originated Through the CARES Act	$ 272