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Note 3 - Loans and Allowance for Credit Losses - Retail Credit Exposure (Details) - USD ($) | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Loans |  | $ 3,555,790,000 | $ 3,453,459,000
Retail Portfolio Segment [Member] |  |  |
Loans |  | 551,228,000 | 503,035,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Loans |  | 522,556,000 | 442,547,000
Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Loans | [1] | 28,672,000 | 60,488,000
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | One to Four Family Mortgages [Member] |  |  |
Loans |  | 520,946,000 | 440,861,000
Retail Portfolio Segment [Member] | Performing Financial Instruments [Member] | Other Consumer Loans [Member] |  |  |
Loans |  | 28,670,000 | 60,369,000
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | One to Four Family Mortgages [Member] |  |  |
Loans |  | 1,610,000 | 1,686,000
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Other Consumer Loans [Member] |  |  |
Loans |  | $ 2,000 | $ 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 $31.9 million and $29.5 million as of March 31, 2022 and December 31, 2021, respectively.

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