Note 12 - Subordinated Debt (Details Textual) - Subordinated Debt [Member] - USD ($) $ in Millions	Dec. 31, 2021	Dec. 27, 2018
Debt Instrument, Face Amount		$ 8
Debt Instrument, Interest Rate, Stated Percentage	6.50%	6.50%

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant