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Parent Company Financial Information - Schedule of Condensed Cash Flow Statement for Parent Company Only (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |  |
Net Income (Loss) | $ (47,035) | $ 100,534 | $ 140,930
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Securities premium amortization, net | 5,416 | 6,189 | 9,011
Provision for (reversal of) credit losses for investment securities held-to-maturity | 66,360 | 31,536 | 266
Depreciation and amortization | 3,198 | 3,480 | 3,319
(Increase) decrease in other assets | (7,703) | (14,976) | (26,162)
Increase (decrease) in other liabilities | (6,201) | 58,395 | 12,581
Net cash provided by operating activities | 123,770 | 195,626 | 194,902
Cash Flows From Investing Activities: |  |  |
Purchase of held-to-maturity investment securities | 0 | 0 | (290,740)
Proceeds from maturities of held-to-maturity investment securities | 70,235 | 78,251 | 115,777
Net cash provided by (used in) investing activities | 310,737 | (97,699) | (927,077)
Cash Flows From Financing Activities: |  |  |
Proceeds from exercise of stock options | 0 | 0 | 97
Proceeds from employee stock purchase plan | 485 | 586 | 748
Common stock repurchased | 0 | (48,033) | (33,087)
Cash dividends paid | (45,617) | (54,993) | (55,776)
Net cash provided by (used in) financing activities | (523,711) | 312,903 | (670,193)
Net Increase (Decrease) in Cash and Cash Equivalents | (89,204) | 410,830 | (1,402,368)
Cash and Cash Equivalents at Beginning of Period | 722,684 | 311,854 | 1,714,222
Cash and Cash Equivalents at End of Period | 633,480 | 722,684 | 311,854
Non-Cash Investing Activities |  |  |
Transfers of investment securities from available-for-sale to held-to-maturity | 0 | 0 | 922,975
Parent Company |  |  |
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |  |
Net Income (Loss) | (47,035) | 100,534 | 140,930
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Adjustments to reconcile net income (loss) to net cash used in operating activities: Equity in undistributed income (loss) of subsidiary | 138,487 | 18,549 | (72,748)
Net tax benefits from stock based compensation expense | 9,561 | 10,018 | 9,899
Securities premium amortization, net | 1,004 | 6 | (54)
Provision for (reversal of) credit losses for investment securities held-to-maturity | (449) | 1,124 | 326
Depreciation and amortization | 82 | 124 | 0
(Increase) decrease in other assets | (11,935) | (10,397) | (12,909)
Increase (decrease) in other liabilities | 2,917 | (1,064) | 4,593
Net cash provided by operating activities | 92,632 | 118,894 | 70,037
Cash Flows From Investing Activities: |  |  |
Investment in subsidiary | (70,000) | 0 | 0
Purchase of held-to-maturity investment securities | 0 | 0 | (3,976)
Proceeds from maturities of held-to-maturity investment securities | 0 | 0 | 1,500
Net cash provided by (used in) investing activities | (70,000) | 0 | (2,476)
Cash Flows From Financing Activities: |  |  |
Net proceeds from long-term borrowings | 7,665 | 0 | 0
Proceeds from exercise of stock options | 0 | 0 | 97
Proceeds from employee stock purchase plan | 485 | 586 | 748
Common stock repurchased | 0 | (47,631) | (33,087)
Cash dividends paid | (45,617) | (54,993) | (55,776)
Net cash provided by (used in) financing activities | (37,467) | (102,038) | (88,018)
Net Increase (Decrease) in Cash and Cash Equivalents | (14,835) | 16,856 | (20,457)
Cash and Cash Equivalents at Beginning of Period | 38,396 | 21,540 | 41,997
Cash and Cash Equivalents at End of Period | 23,561 | 38,396 | 21,540
Non-Cash Investing Activities |  |  |
Transfers of investment securities from available-for-sale to held-to-maturity | $ 0 | $ 0 | $ 42,467

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