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Condensed Parent Company Financial Statements - Summary of Cash Flow of Parent Company (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |
Net income | $ 193,100 | $ 167,630 | $ 99,586
Adjustments to reconcile to net cash provided by operating activities: |  |  |
Amortization of stock-based compensation arrangements of subsidiaries | 1,941 | 2,133 | 1,516
Other, net | (2,482) | 6,783 | 7,818
Net cash provided by operating activities | 226,272 | 203,934 | 154,854
INVESTING ACTIVITIES |  |  |
Other, net | 14,494 | 9,305 | 7,820
Net cash (used in) provided by investing activities | (1,519,168) | 422,885 | (898,506)
FINANCING ACTIVITIES |  |  |
Common stock acquired |  | (11,663) | (3,098)
Net cash settlement of options |  | (5,479) |
Cash dividends paid | (48,462) | (45,140) | (42,472)
Proceeds from issuance of subordinated notes, net of debt issuance costs |  | 59,150 |
Net cash provided by (used in) financing activities | 2,411,784 | (193,709) | 492,283
Net increase/(decrease) in cash, due from banks and interest-bearing deposits | 1,118,888 | 433,110 | (251,369)
Cash, due from banks and interest-bearing deposits at the beginning of the period | 2,050,022 | 1,616,912 | 1,868,281
Cash, due from banks and interest-bearing deposits at the end of the period | 3,168,910 | 2,050,022 | 1,616,912
SUPPLEMENTAL DISCLOSURE |  |  |
Cash paid during the period for interest | 42,930 | 11,993 | 22,056
Cash received during the period for income taxes, net | 34,640 | 30,600 | 26,525
Parent Company [Member] |  |  |
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |
Net income | 193,100 | 167,630 | 99,586
Adjustments to reconcile to net cash provided by operating activities: |  |  |
Equity in undistributed earnings of subsidiaries | (105,817) | (116,365) | (51,955)
Amortization of stock-based compensation arrangements of subsidiaries | 1,833 | 2,048 | 1,456
Other, net | 3,815 | 5,056 | 188
Net cash provided by operating activities | 92,931 | 58,369 | 49,275
INVESTING ACTIVITIES |  |  |
Payments for investments in subsidiaries | (94,967) | (9,000) | (1,000)
Other, net | (1,352) | 4,429 | (1,175)
Net cash (used in) provided by investing activities | (96,319) | (4,571) | (2,175)
FINANCING ACTIVITIES |  |  |
Issuance of common stock | 7,649 | 2,260 | 1,790
Common stock acquired |  | (11,663) | (3,098)
Net cash settlement of options |  | (5,479) |
Cash dividends paid | (48,462) | (45,140) | (42,472)
Proceeds from issuance of subordinated notes, net of debt issuance costs |  | 59,150 |
Net cash provided by (used in) financing activities | (40,813) | (872) | (43,780)
Net increase/(decrease) in cash, due from banks and interest-bearing deposits | (44,201) | 52,926 | 3,320
Cash, due from banks and interest-bearing deposits at the beginning of the period | 62,007 | 9,081 | 5,761
Cash, due from banks and interest-bearing deposits at the end of the period | 17,806 | 62,007 | 9,081
SUPPLEMENTAL DISCLOSURE |  |  |
Cash paid during the period for interest | 4,122 | 3,130 | 1,966
Cash received during the period for income taxes, net | $ 6,667 | $ 4,411 | $ 2,812

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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + 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 (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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- Definition The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + 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 (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
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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 noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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