LOANS HELD FOR INVESTMENT, NET - Deferral Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
CARES Act Loan [Abstract]
Total Loans	$ 10,116,941	$ 9,244,661
One-to-four family residential and cooperative/condominium apartment
CARES Act Loan [Abstract]
Total Loans	722,081	669,282
Commercial real estate ("CRE")
CARES Act Loan [Abstract]
Total Loans	4,264,519	3,945,948
Commercial and Industrial ("C&I") Loans
CARES Act Loan [Abstract]
Total Loans	$ 912,151	$ 933,559