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Note 3 - Loans and Allowance for Credit Losses - Retail Credit Exposure (Details) - USD ($)		Dec. 31, 2022	Dec. 31, 2021
Loans		$ 3,916,619,000	$ 3,453,459,000
Retail Portfolio Segment [Member]
Loans		784,789,000	503,035,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans		755,036,000	442,547,000
Retail Portfolio Segment [Member] | Other Consumer Loans [Member]
Loans	[1]	29,753,000	60,488,000
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | One to Four Family Mortgages [Member]
Loans		753,580,000	440,861,000
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Other Consumer Loans [Member]
Loans		29,753,000	60,369,000
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | One to Four Family Mortgages [Member]
Loans		1,456,000	1,686,000
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Other Consumer Loans [Member]
Loans		$ 0	$ 119,000
[1] In conjunction with the adoption of the CECL methodology effective January 1, 2022, home equity lines of credit were reclassified to 1-4 family mortgage loans from other consumer loans. Home equity lines of credit totaled $37.4 million and $29.5 million as of December 31, 2022, and 2021, respectively.

X

- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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