EMPLOYEE BENEFIT PLANS - Narratives (Detail) - USD ($)	4 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Expected return on plan assets	5.99%
Fair value of plan assets	$ 106,000,000	$ 106,000,000
Defined Contribution Plan, Employer Matching Contribution, Percent		50.00%
Employee contribution percent maximum to get employer matching contribution		6.00%
Total plan expense		$ 3,000,000.0	$ 2,900,000	$ 1,500,000
Matching Constribution Description		The matching contribution of fifty cents for every dollar of the employee’s contribution is comprised of: (i) twenty-five cents for every dollar of the employee’s contribution up to 6% of the employee’s eligible compensation to be paid to the Plan as of each bi-weekly payroll; and (ii) an additional twenty-five cents for every dollar of the employee’s contribution up to 6% of the employee’s eligible compensation to be deposited as a lump sum subsequent to the Plan Year.
Additional discretionary contribution		$ 0
Santander [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee contribution percent maximum to get employer matching contribution		6.00%
PUERTO RICO
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Amount		$ 15,000	15,000	15,000
United States And Virign Islands Operations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Amount		$ 19,500	$ 19,000	$ 18,500