Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)

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FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Assets:            
Mortgage loans held for sale $ 1,763,121   $ 901,227 $ 932,771   $ 845,775
Reverse mortgage loans held for investment 409,144 $ 376,182 315,912 81,457 $ 36,709 0
Mortgage servicing rights 1,197,432 1,292,662 1,161,357 1,258,313 1,184,503 1,139,539
Liabilities:            
Home Equity Conversion Mortgage-Backed Securities (“HMBS”) related borrowings 391,524 $ 358,101 302,183 $ 71,278 $ 0 $ 0
Recurring Fair Value Measurements            
Assets:            
Mortgage loans held for sale 1,763,121   901,227      
Reverse mortgage loans held for investment 409,144   315,912      
Mortgage servicing rights 1,197,432   1,161,357      
Derivative assets            
Notes receivable 11,177   10,627      
Total assets at fair value 3,401,845   2,404,718      
Liabilities:            
Home Equity Conversion Mortgage-Backed Securities (“HMBS”) related borrowings 391,524   302,183      
Derivative liabilities            
Forward delivery commitments and best efforts sales commitments 7,423   16,245      
Contingent liabilities due to acquisitions 29,331   8,720      
Total liabilities at fair value 428,278   327,148      
Recurring Fair Value Measurements | Interest Rate Lock Commitments            
Derivative assets            
Derivative assets 19,763   14,902      
Recurring Fair Value Measurements | Forward delivery commitments and best efforts sales commitments            
Derivative assets            
Derivative assets 1,208   693      
Recurring Fair Value Measurements | Level 1            
Assets:            
Mortgage loans held for sale 0   0      
Reverse mortgage loans held for investment 0   0      
Mortgage servicing rights 0   0      
Derivative assets            
Notes receivable 0   0      
Total assets at fair value 0   0      
Liabilities:            
Home Equity Conversion Mortgage-Backed Securities (“HMBS”) related borrowings 0   0      
Derivative liabilities            
Forward delivery commitments and best efforts sales commitments 0   0      
Contingent liabilities due to acquisitions 0   0      
Total liabilities at fair value 0   0      
Recurring Fair Value Measurements | Level 1 | Interest Rate Lock Commitments            
Derivative assets            
Derivative assets 0   0      
Recurring Fair Value Measurements | Level 1 | Forward delivery commitments and best efforts sales commitments            
Derivative assets            
Derivative assets 0   0      
Recurring Fair Value Measurements | Level 2            
Assets:            
Mortgage loans held for sale 1,763,121   901,227      
Reverse mortgage loans held for investment 0   0      
Mortgage servicing rights 0   0      
Derivative assets            
Notes receivable 0   0      
Total assets at fair value 1,764,329   901,920      
Liabilities:            
Home Equity Conversion Mortgage-Backed Securities (“HMBS”) related borrowings 0   0      
Derivative liabilities            
Forward delivery commitments and best efforts sales commitments 7,423   16,245      
Contingent liabilities due to acquisitions 0   0      
Total liabilities at fair value 7,423   16,245      
Recurring Fair Value Measurements | Level 2 | Interest Rate Lock Commitments            
Derivative assets            
Derivative assets 0   0      
Recurring Fair Value Measurements | Level 2 | Forward delivery commitments and best efforts sales commitments            
Derivative assets            
Derivative assets 1,208   693      
Recurring Fair Value Measurements | Level 3            
Assets:            
Mortgage loans held for sale 0   0      
Reverse mortgage loans held for investment 409,144   315,912      
Mortgage servicing rights 1,197,432   1,161,357      
Derivative assets            
Notes receivable 11,177   10,627      
Total assets at fair value 1,637,516   1,502,798      
Liabilities:            
Home Equity Conversion Mortgage-Backed Securities (“HMBS”) related borrowings 391,524   302,183      
Derivative liabilities            
Forward delivery commitments and best efforts sales commitments 0   0      
Contingent liabilities due to acquisitions 29,331   8,720      
Total liabilities at fair value 420,855   310,903      
Recurring Fair Value Measurements | Level 3 | Interest Rate Lock Commitments            
Derivative assets            
Derivative assets 19,763   14,902      
Recurring Fair Value Measurements | Level 3 | Forward delivery commitments and best efforts sales commitments            
Derivative assets            
Derivative assets $ 0   $ 0