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Note 22 - Parent Company Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Net income | $ 13,040 | $ 13,033 | $ 12,686 | $ 12,845 | $ 11,784 | $ 14,640 | $ 9,814 | $ 11,782 | $ 51,604 | $ 48,020 | $ 46,662
(Decrease) increase in other operating activities |  |  |  |  |  |  |  |  | (299) | 4,233 | 3,671
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 57,739 | 61,828 | 59,024
Investing activities |  |  |  |  |  |  |  |  |  |  |
Payments to acquire securities available for sale |  |  |  |  |  |  |  |  | (109,979) | (74,103) | (269,337)
Net cash (used) provided by investing activities |  |  |  |  |  |  |  |  | 263,910 | 288,662 | (536,779)
Financing activities |  |  |  |  |  |  |  |  |  |  |
Payments for repurchase of common stock |  |  |  |  |  |  |  |  | 8,717 | 23,038 | 21,311
Payments of common stock dividends |  |  |  |  |  |  |  |  | (22,017) | (21,089) | (18,515)
Net cash (used) provided by financing activities |  |  |  |  |  |  |  |  | (60,615) | (404,916) | (28,838)
Cash and cash equivalents increase (decrease) |  |  |  |  |  |  |  |  | 261,034 | (54,426) | (506,593)
Cash and cash equivalents at beginning of period |  |  |  | 116,420 |  |  |  | 170,846 | 116,420 | 170,846 | 677,439
Cash and cash equivalents at end of period | 377,454 |  |  |  | 116,420 |  |  |  | 377,454 | 116,420 | 170,846
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 51,604 | 48,020 | 46,662
(Decrease) increase in other operating activities |  |  |  |  |  |  |  |  | (1,818) | (3,275) | 8,442
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 49,786 | 44,745 | 55,104
Investing activities |  |  |  |  |  |  |  |  |  |  |
Payments to acquire securities available for sale |  |  |  |  |  |  |  |  | (109,979) | (69,469) | (19,372)
Proceeds from maturities, calls, sales of investment securities |  |  |  |  |  |  |  |  | 77,750 | 65,250 | 11,807
Dividends in excess of undistributed net income of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net cash (used) provided by investing activities |  |  |  |  |  |  |  |  | (32,229) | (4,219) | (7,565)
Financing activities |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 1,410 | 91 | 172
Payments for repurchase of common stock |  |  |  |  |  |  |  |  | (8,717) | (23,038) | (21,311)
Payments of common stock dividends |  |  |  |  |  |  |  |  | (22,017) | (21,089) | (18,515)
Net change in other financing activities |  |  |  |  |  |  |  |  | 1,038 | 1,203 | 1,375
Net cash (used) provided by financing activities |  |  |  |  |  |  |  |  | (28,286) | (42,833) | (38,279)
Cash and cash equivalents increase (decrease) |  |  |  |  |  |  |  |  | (10,729) | (2,307) | 9,260
Cash and cash equivalents at beginning of period |  |  |  | $ 14,681 |  |  |  | $ 16,988 | 14,681 | 16,988 | 7,728
Cash and cash equivalents at end of period | $ 3,952 |  |  |  | $ 14,681 |  |  |  | $ 3,952 | $ 14,681 | $ 16,988

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