Note 4 - Loans and Leases - Summary of Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019 USD ($)
Number of modifications	0	3
Recorded investment		$ 1,295
Allowance for loan and lease losses allocated		$ 342
Commercial and Multi-Family Real Estate [Member]
Number of modifications		2
Recorded investment		$ 545
Allowance for loan and lease losses allocated
Commercial Portfolio Segment [Member]
Number of modifications		1
Recorded investment		$ 750
Allowance for loan and lease losses allocated		$ 342

Amount of allowance for credit losses related to troubled debt restructuring.

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

+ Details

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- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

+ Details

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- Details

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- Details

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