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Disclosures about Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets: |  |
Cash and cash equivalents, carrying value | $ 518,032 | $ 693,354
Cash and cash equivalents, fair value | 518,032 | 693,354
Debt securities, available for sale | 3,791,575 | 1,206,431
Equity securities | 25,575 | 3,854
Loans held for sale | 16,254 | 79,086
Total loans and leases receivable, net of allowance for credit losses on loans and leases, fair value | 14,207,811 | 16,222,202
FHLB, Federal Reserve Bank and other restricted stock, carrying value | 64,584 | 71,368
FHLB, Federal Reserve Bank and other restricted stock, fair value | 64,584 | 71,368
Derivatives | 27,295 | 54,223
Liabilities: |  |
Deposits, carrying value | 16,777,924 | 11,309,929
Deposits, fair value | 16,777,236 | 11,312,494
FRB PPP Liquidity facility, carrying value | 0 | 4,415,016
FRB PPP Liquidity Facility, fair value |  | 4,415,016
Federal funds purchased, carrying value | 75,000 | 250,000
Federal funds purchased, fair value | 75,000 | 250,000
FHLB advances, carrying value | 700,000 | 850,000
FHLB advances, fair value | 700,000 | 852,442
Other borrowings, carrying value | 223,086 | 124,037
Other borrowings, fair value | 226,585 | 129,120
Subordinated debt, carrying value | 181,673 | 181,394
Subordinated debt, fair value | 204,782 | 193,119
Derivatives | 26,544 | 98,164
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Cash and cash equivalents, fair value | 518,032 | 693,354
Debt securities, available for sale | 0 | 0
Equity securities |  | 3,854
Loans held for sale | 0 | 0
Total loans and leases receivable, net of allowance for credit losses on loans and leases, fair value | 0 | 0
FHLB, Federal Reserve Bank and other restricted stock, fair value | 0 | 0
Derivatives | 0 | 0
Liabilities: |  |
Deposits, fair value | 16,270,586 | 10,657,998
FRB PPP Liquidity Facility, fair value |  | 0
Federal funds purchased, fair value | 75,000 | 250,000
FHLB advances, fair value | 0 | 0
Other borrowings, fair value | 0 | 0
Subordinated debt, fair value | 0 | 0
Derivatives | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Cash and cash equivalents, fair value | 0 | 0
Debt securities, available for sale | 3,648,690 | 1,206,431
Equity securities |  | 0
Loans held for sale | 15,747 | 78,443
Total loans and leases receivable, net of allowance for credit losses on loans and leases, fair value | 2,284,325 | 3,616,432
FHLB, Federal Reserve Bank and other restricted stock, fair value | 64,584 | 71,368
Derivatives | 27,116 | 54,023
Liabilities: |  |
Deposits, fair value | 506,650 | 654,496
FRB PPP Liquidity Facility, fair value |  | 4,415,016
Federal funds purchased, fair value | 0 | 0
FHLB advances, fair value | 700,000 | 852,442
Other borrowings, fair value | 226,585 | 129,120
Subordinated debt, fair value | 204,782 | 193,119
Derivatives | 26,544 | 98,164
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Cash and cash equivalents, fair value | 0 | 0
Debt securities, available for sale | 142,885 | 0
Equity securities |  | 0
Loans held for sale | 507 | 643
Total loans and leases receivable, net of allowance for credit losses on loans and leases, fair value | 11,923,486 | 12,605,770
FHLB, Federal Reserve Bank and other restricted stock, fair value | 0 | 0
Derivatives | 179 | 200
Liabilities: |  |
Deposits, fair value | 0 | 0
FRB PPP Liquidity Facility, fair value |  | 0
Federal funds purchased, fair value | 0 | 0
FHLB advances, fair value | 0 | 0
Other borrowings, fair value | 0 | 0
Subordinated debt, fair value | 0 | 0
Derivatives | $ 0 | $ 0

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- Definition Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances, Fair Value Disclosure + References No definition available. + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details
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- Definition Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Definition Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Amount of advances from the Federal Home Loan Bank (FHLB). + 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 http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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