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FAIR VALUE DISCLOSURES - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financial assets |  |
Investment securities held-to-maturity | $ 80,321 | $ 84,021
Other investments | 129,945 | 143,160
Interest Receivable | 56,923 | 47,500
Financial liabilities |  |
Deposits | 13,360,797 | 12,701,177
Federal Home Loan Bank Stock and Federal Reserve Bank Stock | 109,400 | 122,800
Impaired Commercial And Commercial Real Estate Loans Member |  |
Financial liabilities |  |
Principal Amount of Commercial and Commercial Real Estate Loans | 19,700 | 11,900
Allowance for Loan and Lease Losses, Real Estate | 4,400 | 3,700
Carrying value |  |
Financial assets |  |
Cash and short-term investments | 1,006,019 | 595,683
Investment securities held-to-maturity | 80,321 | 84,021
Other investments | 20,554 | 20,347
Loans and leases | 10,791,743 | 10,165,994
Interest Receivable | 72,620 | 63,721
Financial liabilities |  |
Deposits | 13,360,797 | 12,701,177
Short-term borrowings | 937,814 | 1,287,156
Long-term debt | 344,115 | 346,672
Interest Payable | 51,454 | 11,150
Fair value |  |
Financial assets |  |
Cash and short-term investments | 1,006,019 | 595,683
Investment securities held-to-maturity | 71,688 | 76,485
Other investments | 20,554 | 20,347
Loans and leases | 10,468,144 | 9,916,353
Interest Receivable | 72,620 | 63,721
Financial liabilities |  |
Deposits | 13,347,319 | 12,670,747
Short-term borrowings | 937,814 | 1,287,156
Long-term debt | 350,426 | 348,041
Interest Payable | 51,454 | 11,150
Fair Value, Inputs, Level 1 [Member] | Fair value |  |
Financial assets |  |
Cash and short-term investments | 1,006,019 | 595,683
Investment securities held-to-maturity | 0 | 0
Other investments | 1,194 | 1,171
Loans and leases | 0 | 0
Interest Receivable | 0 | 0
Financial liabilities |  |
Deposits | 0 | 0
Short-term borrowings | 937,814 | 1,287,156
Long-term debt | 0 | 0
Interest Payable | 15,494 | 3,835
Fair Value, Inputs, Level 2 [Member] | Fair value |  |
Financial assets |  |
Cash and short-term investments | 0 | 0
Investment securities held-to-maturity | 71,688 | 76,485
Other investments | 10,040 | 10,040
Loans and leases | 0 | 0
Interest Receivable | 15,697 | 16,233
Financial liabilities |  |
Deposits | 13,347,319 | 12,670,747
Short-term borrowings | 0 | 0
Long-term debt | 350,426 | 348,041
Interest Payable | 35,960 | 7,315
Fair Value, Inputs, Level 3 [Member] | Fair value |  |
Financial assets |  |
Cash and short-term investments | 0 | 0
Investment securities held-to-maturity | 0 | 0
Other investments | 9,320 | 9,136
Loans and leases | 10,468,144 | 9,916,353
Interest Receivable |  | 47,488
Financial liabilities |  |
Deposits | 0 | 0
Short-term borrowings | 0 | 0
Long-term debt | 0 | 0
Interest Payable | $ 0 | $ 0

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- Definition The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio. + References No definition available. + Details
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- Definition Fair value portion 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. + References No definition available. + Details
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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-14 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7A -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-7A + Details
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