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Disclosures About Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Cash and cash equivalents, Carrying Amount | $ 3,701,120 | $ 3,846,346
Cash and cash equivalents, Estimated Fair Value | 3,701,120 | 3,846,346
Debt securities, available for sale | 2,571,139 | 2,376,860
Debt securities, held to maturity | 1,032,037 | 1,103,170
Debt securities, held to maturity, fair value | 972,628 | 1,046,439
Loans held for sale | 357,640 | 340,317
Total loans and leases receivable, net of allowance for credit losses on loans and leases | 12,765,935 | 12,726,456
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value | 12,551,635 | 12,513,386
FHLB, Federal Reserve Bank and other restricted stock, Carrying Amount | 100,067 | 109,548
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value | 100,067 | 109,548
Derivative assets | 21,437 | 17,931
Liabilities: |  |
Deposits held | 17,961,383 | 17,920,236
Deposits, Estimated Fair Value | 17,958,161 | 17,922,005
FHLB advances, Carrying Amount | 1,195,088 | 1,203,207
FHLB advances, Estimated Fair Value | 1,180,285 | 1,188,517
Other borrowings, Carrying Amount | 123,905 | 123,840
Other borrowings, Estimated Fair Value | 105,761 | 103,674
Subordinated debt, Carrying Amount | 182,300 | 182,230
Subordinated debt, Estimated Fair Value | 163,417 | 164,233
Derivative liabilities | 31,958 | 27,110
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Cash and cash equivalents, Estimated Fair Value | 3,701,120 | 3,846,346
Debt securities, available for sale | 0 | 0
Debt securities, held to maturity, fair value | 0 | 0
Loans held for sale | 0 | 0
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value | 0 | 0
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value | 0 | 0
Derivative assets | 0 | 0
Liabilities: |  |
Deposits, Estimated Fair Value | 15,778,872 | 14,632,357
FHLB advances, Estimated Fair Value | 0 | 0
Other borrowings, Estimated Fair Value | 0 | 0
Subordinated debt, Estimated Fair Value | 0 | 0
Derivative liabilities | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Cash and cash equivalents, Estimated Fair Value | 0 | 0
Debt securities, available for sale | 2,542,876 | 2,341,911
Debt securities, held to maturity, fair value | 465,025 | 472,311
Loans held for sale | 870 | 1,215
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value | 962,610 | 897,912
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value | 100,067 | 109,548
Derivative assets | 21,360 | 17,906
Liabilities: |  |
Deposits, Estimated Fair Value | 2,179,289 | 3,289,648
FHLB advances, Estimated Fair Value | 1,180,285 | 1,188,517
Other borrowings, Estimated Fair Value | 105,761 | 103,674
Subordinated debt, Estimated Fair Value | 163,417 | 164,233
Derivative liabilities | 31,958 | 27,110
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Cash and cash equivalents, Estimated Fair Value | 0 | 0
Debt securities, available for sale | 28,263 | 34,949
Debt securities, held to maturity, fair value | 507,603 | 574,128
Loans held for sale | 356,770 | 339,102
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value | 11,589,025 | 11,615,474
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value | 0 | 0
Derivative assets | 77 | 25
Liabilities: |  |
Deposits, Estimated Fair Value | 0 | 0
FHLB advances, Estimated Fair Value | 0 | 0
Other borrowings, Estimated Fair Value | 0 | 0
Subordinated debt, Estimated Fair Value | 0 | 0
Derivative liabilities | $ 0 | $ 0

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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://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or 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. 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