STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 28, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Class Of Stock [Line Items]
Common stock, shares authorized		2,000,000,000	2,000,000,000
Common stock, par value		$ 0.1	$ 0.1
Common stock, shares issued		223,034,348	222,103,721
Common stock, shares outstanding		218,235,064	217,359,337
Dividends declared per common share	$ 0.07	$ 0.20	$ 0.14	$ 0.03
Increase in dividends per share declared	$ 0.02
Preferred Stock Shares Authorized		50,000,000	50,000,000
Preferred stock, par value		$ 1.00
Liquidation value per share, Preferred stock		$ 25
Treasury Stock Shares Acquired		51,814	176,015
Treasury Stock Shares		4,799,284	4,744,384
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		$ 11,700	$ 17,400
Legal Surplus Amount		$ 109,338	97,586
7.125% Noncumulative Perpetual Monthly Income Preferred Stock, Series A [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage		7.125%
8.35% Noncumulative Perpetual Monthly Income Preferred Stock, Series B [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage		8.35%
7.40% Noncumulative Perpetual Monthly Income Preferred Stock, Series C [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage		7.40%
7.25% Noncumulative Perpetual Monthly Income Preferred Stock, Series D [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage		7.25%
7.00% Noncumulative Perpetual Monthly Income Preferred Stock, Series E [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage		7.00%
Common Stock [Member]
Class Of Stock [Line Items]
Dividends declared		$ 43,800	$ 30,500
Preferred Stock [Member]
Class Of Stock [Line Items]
Dividends declared		$ 2,700