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OTHER LONG-TERM BORROWINGS - Components of Other Borrowings (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Statutory Trust One [Member]
Subordinated Borrowing [Line Items]
Trust preferred securities repurchased	$ 21.4
London Interbank Offered Rate (LIBOR) [Member]
Subordinated Borrowing [Line Items]
Debt Instrument Description Of Variable Rate Basis		3-month LIBOR
SOFR [Member]
Subordinated Borrowing [Line Items]
Debt Instrument Basis Spread On Variable Rate		0.26161%
Junior Subordinated Debt [Member] | SOFR [Member]
Subordinated Borrowing [Line Items]
Debt Instrument Basis Spread On Variable Rate		0.26161%
Junior Subordinated Debt [Member] | due June 17, 2034 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Statutory Trust One [Member]
Subordinated Borrowing [Line Items]
Debt Instrument Basis Spread On Variable Rate		2.75%
Debt Instrument Description Of Variable Rate Basis		3-month LIBOR
Long Term Debt Percentage Bearing Variable Interest Rate	8.26%	8.26%	7.49%
Junior Subordinated Debt [Member] | due September 20, 2034 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Statutory Trust Two [Member]
Subordinated Borrowing [Line Items]
Debt Instrument Basis Spread On Variable Rate		2.50%
Debt Instrument Description Of Variable Rate Basis		3-month LIBOR
Long Term Debt Percentage Bearing Variable Interest Rate	8.01%	8.01%	7.25%

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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The cash outflow to reacquire preferred stocks issued by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-15

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