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Note 22 - Parent Company Financial Information - Statements of Cash Flow (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Net income | $ 227,242 | $ 206,853 | $ 251,504
Net cash provided by operating activities | 252,915 | 197,296 | 272,627
Net cash used in investing activities | (948,534) | (200,432) | (2,642,217)
Net cash used in financing activities | 941,165 | 1,318,171 | (1,036,453)
Net increase (decrease) in cash and cash equivalents | 245,546 | 1,315,035 | (3,406,043)
Cash and cash equivalents at beginning of period | 2,131,088 | 816,053 | 4,222,096
Cash and cash equivalents at end of period | 2,376,634 | 2,131,088 | 816,053
Parent Company [Member] |  |  |
Net income | 227,180 | 206,791 | 251,442
Other | (1,374) | 2,227 | (290)
Equity in undistributed earnings of subsidiary | (157,887) | (147,076) | (197,221)
Net cash provided by operating activities | 67,919 | 61,942 | 53,931
Other | 0 | (300) | 750
Net cash used in investing activities | 0 | (300) | 750
Proceeds from issuance of subordinated notes | 0 | 0 | 0
Redemption of subordinated notes | 0 | 0 | 0
Dividends paid on common stock | (65,412) | (60,923) | (49,942)
Net cash used in financing activities | (65,412) | (60,923) | (49,942)
Net increase (decrease) in cash and cash equivalents | 2,570 | 722 | 4,739
Cash and cash equivalents at beginning of period | 20,014 | 19,292 | 14,553
Cash and cash equivalents at end of period | $ 22,521 | $ 20,014 | $ 19,292

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