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Condensed Parent Company Financial Statements - Schedule of Condensed Cash Flow Statement (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
OPERATING ACTIVITIES |  |  |
Net income | $ 192,113 | $ 242,260 | $ 122,044
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Net change in other assets | (63,074) | 60,503 | (30,280)
Net securities losses (gains) | 1,777 | (1,113) | (4,268)
Other—net | (3,075) | (6,549) | 2,702
Net cash provided by operating activities | 204,140 | 336,297 | 59,606
INVESTING ACTIVITIES |  |  |
Proceeds from sales-securities available-for-sale |  |  | 226,099
Net cash (used in) provided by investing activities | (1,068,160) | (328,496) | 57,792
FINANCING ACTIVITIES |  |  |
Repayment of subordinated debt and junior subordinated debt |  | (60,000) | (6,702)
Issuance of subordinated debt | 147,702 |  |
Issuance of common stock |  |  | 59
Issuance of preferred stock |  |  | 144,484
Treasury shares purchased—net | (116,047) | (179,882) | (24,540)
Dividends paid to common and preferred shareholders | (81,325) | (86,484) | (85,253)
Net cash provided by financing activities | 21,073 | 338,110 | 553,253
Net (decrease) increase in cash, cash equivalents and restricted cash | (842,947) | 345,911 | 670,651
Cash, cash equivalents and restricted cash at beginning of the year | 1,251,358 | 905,447 | 234,796
Cash, cash equivalents and restricted cash at end of the year | 408,411 | 1,251,358 | 905,447
Parent Company [Member] |  |  |
OPERATING ACTIVITIES |  |  |
Net income | 192,113 | 242,260 | 122,044
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
(Equity in undistributed net income) excess dividends of subsidiaries | (30,918) | 2,832 | (66,289)
Net change in other assets | 582 | (1,453) | 121
Net securities losses (gains) |  |  | 22
Other—net | 6,941 | 7,984 | 5,865
Net cash provided by operating activities | 168,718 | 251,623 | 61,763
INVESTING ACTIVITIES |  |  |
Proceeds from sales-securities available-for-sale |  |  | 203
Acquisitions and additional capitalization of subsidiaries, net of cash acquired | (100) |  | (35,000)
Net cash (used in) provided by investing activities | (100) |  | (34,797)
FINANCING ACTIVITIES |  |  |
Repayment of subordinated debt and junior subordinated debt |  | (35,000) | (6,702)
Issuance of subordinated debt | 147,702 |  |
Issuance of common stock |  |  | 59
Issuance of preferred stock |  |  | 144,484
Treasury shares purchased—net | (116,047) | (179,882) | (24,540)
Dividends paid to common and preferred shareholders | (91,450) | (96,609) | (87,897)
Net cash provided by financing activities | (59,795) | (311,491) | 25,404
Net (decrease) increase in cash, cash equivalents and restricted cash | 108,823 | (59,868) | 52,370
Cash, cash equivalents and restricted cash at beginning of the year | 163,356 | 223,224 | 170,854
Cash, cash equivalents and restricted cash at end of the year | $ 272,179 | $ 163,356 | $ 223,224

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- Definition The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3151-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
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- Definition The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets or underlying collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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