STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($)		3 Months Ended		9 Months Ended
	Oct. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jul. 24, 2023	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Apr. 27, 2022	Dec. 31, 2021
Class Of Stock [Line Items]
Dividends declared per common share		$ 0.14	$ 0.12	$ 0.42	$ 0.34
Preferred Stock Shares Authorized		50,000,000		50,000,000
Preferred stock, par value		$ 1.00		$ 1.00
Treasury Stock Shares Acquired		5,393,236	5,385,857	9,258,611	16,066,747
Treasury Stock Shares		49,276,790	37,405,457	49,276,790	37,405,457		43,906,494	40,954,057	32,036,780		21,836,611
Legal surplus reserve rate				10.00%
Puerto Rico Banking Law Description				The Puerto Rico Banking Law provides that, when the expenditures of a Puerto Rico commercial bank are greater than receipts, the excess of the expenditures over receipts must be charged against the undistributed profits of the bank, and the balance, if any, must be charged against the legal surplus reserve, as a reduction thereof. If the legal surplus reserve is not sufficient to cover such balance in whole or in part, the outstanding amount must be charged against the capital account and the Bank cannot pay dividends until it can replenish the legal surplus reserve to an amount of at least 20% of the original capital contributed.
Legal Surplus Amount Additions				$ 0
Legal Surplus Amount		$ 168,484,000		$ 168,484,000				$ 168,484,000
Preferred Stock Shares Outstanding		0		0				0
Stock Issued During Period Shares Treasury Stock Reissued		23,903	21,924	994,332	513,009
Shares Paid For Tax Withholding For Share Based Compensation		778		288,613
Dividends paid on common stock		$ 24,900,000	$ 22,700,000	$ 75,600,000	$ 65,900,000
New Stock Repurchase Program [Member]
Class Of Stock [Line Items]
Treasury Stock Shares Acquired		5,392,458		8,969,998
Common stock repurchased price per share		$ 13.91		$ 13.94
Stock Repurchase Program Authorized Amount 1										$ 350,000,000
Stock Repurchased During Period Shares		0
Common stock repurchase value		$ 75,000,000		$ 125,000,000
Stock Repurchase Program Announced July 24, 2023 [Member]
Class Of Stock [Line Items]
Stock Repurchase Program Authorized Amount 1						$ 225,000,000
Subsequent Event [Member]
Class Of Stock [Line Items]
Dividend Payable Date To Be Paid Day Month And Year	Dec. 08, 2023
Dividends Payable Date Of Record Day Month And Year	Nov. 24, 2023
Dividends Payable Date Declared Day Month And Year	Oct. 31, 2023
Subsequent Event [Member] | Common Stock Outstanding [Member]
Class Of Stock [Line Items]
Dividends declared per common share	$ 0.14