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SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Securities sold under agreements to repurchase, Underlying Securities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Assets Sold under Agreements to Repurchase [Line Items]    
Amortized Cost of Underlying Securities $ 90,040 $ 319,225
Balance of Borrowings 75,133 300,000
Accrued interest receivable on loans and investments 69,730 61,507
Repurchase Agreements [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Accrued interest receivable on loans and investments 137 599
Repurchase Agreements [Member] | Asset Pledged as Collateral [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Approximate Fair Value of Underlying Securities 81,103 321,180
Repurchase Agreements [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Amortized Cost of Underlying Securities 60,081 0
Balance of Borrowings $ 50,134 $ 0
Weighted-average interest rates on repurchase agreements 0.62% 0.00%
Repurchase Agreements [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Asset Pledged as Collateral [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Approximate Fair Value of Underlying Securities $ 54,093 $ 0
Repurchase Agreements [Member] | Mortgage Backed Securities [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Amortized Cost of Underlying Securities 29,959 319,225
Balance of Borrowings $ 24,999 $ 300,000
Weighted-average interest rates on repurchase agreements 2.08% 1.33%
Repurchase Agreements [Member] | Mortgage Backed Securities [Member] | Asset Pledged as Collateral [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Approximate Fair Value of Underlying Securities $ 27,010 $ 321,180