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VARIABLE INTEREST ENTITIES - Additional Information (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
USD ($)
trust
Mar. 31, 2021
USD ($)
Sep. 30, 2019
USD ($)
Dec. 31, 2021
USD ($)
Variable Interest Entity [Line Items]        
Total assets $ 9,583,540     $ 9,393,743
Number of grantor trusts | trust 2      
Variable Interest Entity, Not Primary Beneficiary        
Variable Interest Entity [Line Items]        
Fundings $ 0 $ 0    
Maximum loss exposure 25,156     25,888
Total assets 259,318     259,746
Investments in grantor trusts 527     527
Variable Interest Entity, Not Primary Beneficiary | Other Assets        
Variable Interest Entity [Line Items]        
Total assets $ 25,200     $ 25,900
Variable Interest Entity, Not Primary Beneficiary | Multifamily        
Variable Interest Entity [Line Items]        
Fundings     $ 573,500  
Credit losses guaranteed (percent) 12.00%      
Maximum loss exposure $ 68,800      
Repurchase liability recognized $ 2,500