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Note 3 - Loans - Summary of Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Financing receivable, gross | $ 12,605,836 | $ 11,658,829 |  |
Less allowance for credit losses | (164,458) | (153,317) | $ (146,297) | $ (116,660)
Loans, net | 12,441,378 | 11,505,512 |  |
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Financing receivable, gross | 2,869,894 | 2,823,986 |  |
Real Estate Portfolio Segment[Member] |  |  |  |
Financing receivable, gross | 8,173,009 | 7,251,447 |  |
Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |  |  |
Financing receivable, gross | 1,489,306 | 1,519,619 |  |
Less allowance for credit losses | (38,597) | (44,658) | (42,889) | (26,994)
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |  |  |
Financing receivable, gross | 2,547,143 | 2,257,163 |  |
Less allowance for credit losses | (22,302) | (17,702) | (16,843) | (16,204)
Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |  |  |
Financing receivable, gross | 1,444,623 | 1,249,938 |  |
Less allowance for credit losses | (14,096) | (12,029) | (12,219) | (6,978)
Real Estate Portfolio Segment[Member] | Non-owner Occupied Commercial [Member] |  |  |  |
Financing receivable, gross | 4,181,243 | 3,744,346 |  |
Less allowance for credit losses | (31,328) | (25,395) | (29,590) | (22,647)
Consumer Portfolio Segment [Member] |  |  |  |
Financing receivable, gross | 73,627 | 63,777 |  |
Less allowance for credit losses | $ (2,805) | $ (1,412) | $ (1,926) | $ (1,968)

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