Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS - Summary of Fair Value Option for Mortgage Loans Held for Sale (Details)

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FAIR VALUE MEASUREMENTS - Summary of Fair Value Option for Mortgage Loans Held for Sale (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Option, Quantitative Disclosures [Line Items]      
Mortgage loans held for sale $ 901,227 $ 845,775 $ 2,204,216
Reverse mortgage loans held for investment 315,912 0  
Accounts and notes receivable, net 85,356 58,304  
Home Equity Conversion Mortgage-Backed Securities (“HMBS”) related borrowings 302,183 0  
Mortgage Loans Held For Sale      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Mortgage loans held for sale 901,227 845,775  
Mortgages held for sale unpaid principal balance 892,816 868,833  
Gain loss on mortgage loans held for sale at fair value 8,411 (23,058)  
Mortgages held for sale unpaid principal balance due 9,900 8,800  
Fair value, option, loans held as assets, 90 days or more past due 7,300 $ 6,300  
Reverse Mortgage Loans Held For Investment      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gain loss on mortgage loans held for sale at fair value 25,005    
Reverse mortgage loans held for investment 315,912    
Reverse mortgage loans held for investment, principal amount due upon maturity 290,907    
Mortgages held for sale unpaid principal balance due 3,300    
Fair value, option, loans held as assets, 90 days or more past due 3,400    
Notes Receivable      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gain loss on mortgage loans held for sale at fair value (929)    
Accounts and notes receivable, net 10,627    
Notes receivable, principal amount due upon maturity 11,556    
Debt      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gain loss on mortgage loans held for sale at fair value 8,641    
Home Equity Conversion Mortgage-Backed Securities (“HMBS”) related borrowings 302,183    
HMBS related borrowings, principal amount due upon maturity $ 293,542