Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Schedule of Financial Assets Measured at Fair Value on Nonrecurring Basis (Details)

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FAIR VALUE MEASUREMENTS - Schedule of Financial Assets Measured at Fair Value on Nonrecurring Basis (Details) - Non-Recurring Fair Value Measurements - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Assets:    
Total assets at fair value $ 639,023 $ 650,179
Liabilities:    
Total liabilities at fair value 639,370 650,179
Ginnie Mae    
Assets:    
Total assets at fair value 639,023 650,179
Liabilities:    
Total liabilities at fair value 639,370 650,179
Level 1    
Assets:    
Total assets at fair value 0 0
Liabilities:    
Total liabilities at fair value 0 0
Level 1 | Ginnie Mae    
Assets:    
Total assets at fair value 0 0
Liabilities:    
Total liabilities at fair value 0 0
Level 2    
Assets:    
Total assets at fair value 639,023 650,179
Liabilities:    
Total liabilities at fair value 639,370 650,179
Level 2 | Ginnie Mae    
Assets:    
Total assets at fair value 639,023 650,179
Liabilities:    
Total liabilities at fair value 639,370 650,179
Level 3    
Assets:    
Total assets at fair value 0 0
Liabilities:    
Total liabilities at fair value 0 0
Level 3 | Ginnie Mae    
Assets:    
Total assets at fair value 0 0
Liabilities:    
Total liabilities at fair value $ 0 $ 0