Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) $ in Millions	Jan. 01, 2022 USD ($)
Accounting Standards Update 2016-13 [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses, Period Increase (Decrease)	$ 2.1

Amount of increase (decrease) of allowance reserve for credit loss.

No definition available.

Name:	us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration