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FAIR VALUE DISCLOSURES - Summary of Financial Assets and Liabilities Measure at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Loans Held-for-sale, Fair Value Disclosure | $ 29,500 | $ 41,100
Derivatives | 212,970 | 272,499
Liabilities |  |
Derivatives | 212,977 | 272,606
Investment Securities, Available-for-sale | 4,207,846 | 3,424,580
Impaired Commercial And Commercial Real Estate Loans Member |  |
Liabilities |  |
Principal Amount of Commercial and Commercial Real Estate Loans | 28,800 | 45,300
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 [Member] | Fair value |  |
Assets |  |
Loans Held-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 [Member] |  |
Assets |  |
Derivatives |  | 0
Total | 34,776 | 103
Liabilities |  |
Total | 0 | 0
Investment Securities, Available-for-sale | 34,776 | 103
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 [Member] | Fair value |  |
Assets |  |
Loans Held-for-sale, Fair Value Disclosure | 29,482 | 41,103
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 [Member] |  |
Assets |  |
Derivatives |  | 185,032
Total | 4,377,467 | 3,697,652
Liabilities |  |
Total | 213,212 | 273,739
Investment Securities, Available-for-sale | 4,134,889 | 3,383,902
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] | Fair value |  |
Assets |  |
Loans Held-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] |  |
Assets |  |
Derivatives |  | 0
Total | 38,181 | 40,575
Liabilities |  |
Total | 0 | 0
Investment Securities, Available-for-sale | 38,181 | 40,575
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1, 2 and 3 [Member] |  |
Assets |  |
Loans Held-for-sale, Fair Value Disclosure | 29,482 | 41,103
Derivatives |  | 185,032
Total | 4,450,424 | 3,738,330
Liabilities |  |
Total | 213,212 | 273,739
Investment Securities, Available-for-sale | 4,207,846 | 3,424,580
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 [Member] |  |
Assets |  |
Derivatives | 0 |
Liabilities |  |
Derivatives | 0 | 0
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 [Member] |  |
Assets |  |
Derivatives | 92,328 |
Liabilities |  |
Derivatives | 92,444 | 186,124
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] |  |
Assets |  |
Derivatives | 0 |
Liabilities |  |
Derivatives | 0 | 0
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1, 2 and 3 [Member] |  |
Assets |  |
Derivatives | 92,328 |
Liabilities |  |
Derivatives | 92,444 | 186,124
Foreign Exchange [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 [Member] |  |
Assets |  |
Derivatives | 0 | 0
Liabilities |  |
Derivatives | 0 | 0
Foreign Exchange [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 [Member] |  |
Assets |  |
Derivatives | 120,768 | 87,615
Liabilities |  |
Derivatives | 120,768 | 87,615
Foreign Exchange [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] |  |
Assets |  |
Derivatives | 0 | 0
Liabilities |  |
Derivatives | 0 | 0
Foreign Exchange [Member] | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1, 2 and 3 [Member] |  |
Assets |  |
Derivatives | 120,768 | 87,615
Liabilities |  |
Derivatives | $ 120,768 | $ 87,615

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