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Fair Value Measurement - Estimates Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financial Assets |  |
Cash and due from banks | $ 408,411 | $ 1,251,358
Equity securities | 11,506 | 13,466
Available-for-sale debt securities | 2,529,140 | 3,013,462
Held-to-maturity debt securities | 1,248,629 | 1,004,823
Loans held for sale | 8,249 | 25,277
Accrued interest receivable | 68,522 | 60,844
Financial Liabilities |  |
Deposits | 13,131,090 | 13,565,863
Federal Home Loan Bank borrowings | 705,000 | 183,920
Other borrowings | 135,069 | 141,893
Junior subordinated debt | 133,530 |
Subordinated debt and junior subordinated debt | 281,404 | 132,860
Accrued interest payable | 4,593 | 1,901
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial Assets |  |
Cash and due from banks | 408,411 | 1,251,358
Equity securities | 11,506 | 13,466
Accrued interest receivable | 68,522 | 60,844
Financial Liabilities |  |
Deposits | 12,245,272 | 12,273,211
Other borrowings | 122,926 | 134,288
Accrued interest payable | 4,593 | 1,901
Significant Other Observable Inputs (Level 2) [Member] |  |
Financial Assets |  |
Available-for-sale debt securities | 2,527,961 | 3,011,969
Held-to-maturity debt securities | 1,084,071 | 1,028,047
Loans held for sale | 8,249 | 25,277
Other assets—interest rate derivatives | 75,840 | 24,867
Financial Liabilities |  |
Deposits | 897,671 | 1,302,266
Federal Home Loan Bank borrowings | 705,094 | 185,684
Subordinated debt and junior subordinated debt | 258,631 | 109,186
Other liabilities—interest rate derivatives | 74,683 | 26,388
Significant Unobservable Inputs (Level 3) [Member] |  |
Financial Assets |  |
Available-for-sale debt securities | 1,179 | 1,493
Held-to-maturity debt securities | 319 | 405
Net loans | 9,487,038 | 9,385,917
Carrying Amount [Member] |  |
Financial Assets |  |
Cash and due from banks | 408,411 | 1,251,358
Equity securities | 11,506 | 13,466
Available-for-sale debt securities | 2,529,140 | 3,013,462
Held-to-maturity debt securities | 1,248,409 | 1,004,555
Net loans | 10,584,938 | 9,611,856
Loans held for sale | 8,249 | 25,277
Other assets—interest rate derivatives | 75,840 | 24,867
Accrued interest receivable | 68,522 | 60,844
Financial Liabilities |  |
Deposits | 13,131,090 | 13,565,863
Federal Home Loan Bank borrowings | 705,000 | 183,920
Other borrowings | 135,069 | 141,893
Subordinated debt and junior subordinated debt | 281,404 | 132,860
Other liabilities—interest rate derivatives | 74,683 | 26,388
Accrued interest payable | 4,593 | 1,901
Fair Value Estimate [Member] |  |
Financial Assets |  |
Cash and due from banks | 408,411 | 1,251,358
Equity securities | 11,506 | 13,466
Available-for-sale debt securities | 2,529,140 | 3,013,462
Held-to-maturity debt securities | 1,084,390 | 1,028,452
Net loans | 9,487,038 | 9,385,917
Loans held for sale | 8,249 | 25,277
Other assets—interest rate derivatives | 75,840 | 24,867
Accrued interest receivable | 68,522 | 60,844
Financial Liabilities |  |
Deposits | 13,142,943 | 13,575,477
Federal Home Loan Bank borrowings | 705,094 | 185,684
Other borrowings | 122,926 | 134,288
Subordinated debt and junior subordinated debt | 258,631 | 109,186
Other liabilities—interest rate derivatives | 74,683 | 26,388
Accrued interest payable | $ 4,593 | $ 1,901

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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Amount 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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563 + Details
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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