Note 1 - Nature of Operations and Basis of Presentation (Details Textual)		6 Months Ended
	Jul. 27, 2021 USD ($)	Jun. 30, 2021 USD ($)
Number of Paycheck Protection Program Loans Originated		688
Financing Receivable, Paycheck Protection Program Loans Originated		$ 54,900,000
Subsequent Event [Member] | SBA CARES Act Paycheck Protection Program, First Round [Member]
Number of Paycheck Protection Program Loans Originated	421
Financing Receivable, Paycheck Protection Program Loans Originated	$ 26,700,000
Number of Paycheck Protection Program Loans Fully Repaid	677
Financing Receivable, Paycheck Protection Program Loans, Fully Repaid	$ 51,100,000
Number of Paycheck Protection Program Loans Voluntarily Repaid	5
Financing Receivable, Paycheck Protection Program Loans, Voluntarily Repaid	$ 66,000
Financing Receivable, Paycheck Protection Program Loans, Unforgiven, Aggregate Balance	$ 97,000
Number of Paycheck Protection Program Loans, Unforgiven, Outstanding	2
Financing Receivable, Paycheck Protection Program Loans, Unforgiven, Outstanding Balance	$ 95,000
Subsequent Event [Member] | SBA CARES Act Paycheck Protection Program, Second Round [Member]
Number of Paycheck Protection Program Loans Fully Repaid	111
Financing Receivable, Paycheck Protection Program Loans, Fully Repaid	$ 6,100,000