BORROWINGS - Retail Repurchase Agreements and Federal Funds Purchased (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Retail repurchase agreements
Short-term Debt [Line Items]
Other short-term borrowings	$ 68,911,000	$ 75,032,000
Short-term debt, average outstanding amount	65,913,000	63,259,000
Other short term borrowings, maximum month end balance	$ 75,101,000	$ 78,239,000
Interest rate	1.92%	2.00%
Weighted average interest rate, over time	2.08%	1.45%
Federal funds purchased
Short-term Debt [Line Items]
Other short-term borrowings	$ 0	$ 0
Short-term debt, average outstanding amount	16,208,000	69,672,000
Other short term borrowings, maximum month end balance	$ 130,000,000	$ 330,000,000
Interest rate	0.00%	0.00%
Weighted average interest rate, over time	5.53%	5.15%
Federal Reserve Bank borrowings
Short-term Debt [Line Items]
Other short-term borrowings	$ 0	$ 300,000,000
Short-term debt, average outstanding amount	59,016,000	201,370,000
Other short term borrowings, maximum month end balance	$ 300,000,000	$ 300,000,000
Interest rate	0.00%	4.92%
Weighted average interest rate, over time	5.07%	4.94%