Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENT - Carrying Values and Fair Values of Financial Assets Recorded at Fair Value on a Recurring Basis (Details)

v3.19.2
FAIR VALUE MEASUREMENT - Carrying Values and Fair Values of Financial Assets Recorded at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Investments in:      
Excess mortgage servicing rights, at fair value $ 411,537 $ 447,860  
Mortgage servicing rights financing receivables, at fair value 1,941,139 1,644,504  
Real estate and other securities, available-for-sale 12,125,826 11,636,581  
Residential mortgage loans, held-for-sale 5,588,540 2,808,529  
Residential mortgage loans, held-for-investment, at fair value 117,155 121,088  
Residential mortgage loans subject to repurchase 141,581 121,602 $ 0
Derivative assets 23,129 10,893  
Restricted cash 159,151 164,020  
Liabilities      
Residential mortgage loans repurchase liability 141,581 121,602  
Derivative liabilities 18,980 29,389  
Excess spread financing, at fair value 28,078 39,304  
Equity investment 90,411 $ 74,323  
Recurring Basis      
Investments in:      
Excess mortgage servicing rights, principal balance 98,544,892    
Excess mortgage servicing rights, equity method investees, principal balance 38,336,238    
Mortgage servicing rights, principal balance 276,709,482    
Mortgage servicing rights financing receivables, principal balance 160,799,425    
Servicer advance investments, principal balance 528,202    
Real estate and other securities, available-for-sale, principal balance 24,980,167    
Residential mortgage loans, held-for-investment, principal balance 600,247    
Residential mortgage loans, held-for-sale, principal balance 1,261,283    
Residential mortgage loans, held-for-sale, at fair value principal balance 5,671,385    
Residential mortgage loans, held-for-investment, at fair value, principal balance 116,322    
Residential mortgage loans, subject to repurchase, principal balance 141,581    
Consumer loans, held-for-investment, principal balance 937,633    
Derivative assets 2,155,714    
Cash and cash equivalents, principal balance 406,038    
Restricted cash, principal balance 159,151    
Liabilities      
Repurchase agreements, principal balance 21,481,285    
Notes and bonds payable, principal balance 7,302,030    
Residential mortgage loan repurchase liability, principal balance 141,581    
Derivative liabilities, principal amount 20,774,879    
Excess spread financing, principal balance 3,275,632    
Mortgage backed securities, issued at fair value 484,400    
Recurring Basis | Carrying Value      
Investments in:      
Excess mortgage servicing rights, at fair value 411,537    
Excess mortgage servicing rights, equity method investees, at fair value 133,468    
Mortgage servicing rights, at fair value 2,976,008    
Mortgage servicing rights financing receivables, at fair value 1,941,139    
Servicer advance investments, at fair value 637,914    
Real estate and other securities, available-for-sale 12,125,826    
Residential mortgage loans, held-for-investment 524,234    
Residential mortgage loans, held-for-sale 1,154,256    
Residential mortgage loans, held-for-sale 5,588,540    
Residential mortgage loans, held-for-investment, at fair value 117,155    
Residential mortgage loans subject to repurchase 141,581    
Consumer loans, held-for-investment 938,956    
Derivative assets 23,129    
Cash and cash equivalents 406,038    
Restricted cash 159,151    
Other assets(B) 28,826    
Assets, fair value 27,307,758    
Liabilities      
Repurchase agreements 21,480,245    
Notes and bonds payable 7,297,765    
Residential mortgage loans repurchase liability 141,581    
Derivative liabilities 18,980    
Excess spread financing, at fair value 28,078    
Contingent consideration 45,569    
Liabilities, fair value 29,012,218    
Recurring Basis | Fair Value      
Investments in:      
Excess mortgage servicing rights, at fair value 411,537    
Excess mortgage servicing rights, equity method investees, at fair value 133,468    
Mortgage servicing rights, at fair value 2,976,008    
Mortgage servicing rights financing receivables, at fair value 1,941,139    
Servicer advance investments, at fair value 637,914    
Real estate and other securities, available-for-sale 12,125,826    
Residential mortgage loans, held-for-investment 522,514    
Residential mortgage loans, held-for-sale 1,178,027    
Residential mortgage loans, held-for-sale 5,588,540    
Residential mortgage loans, held-for-investment, at fair value 117,155    
Residential mortgage loans subject to repurchase 141,581    
Consumer loans, held-for-investment 955,076    
Derivative assets 23,129    
Cash and cash equivalents 406,038    
Restricted cash 159,151    
Other assets(B) 28,826    
Assets, fair value 27,345,929    
Liabilities      
Repurchase agreements 21,481,285    
Notes and bonds payable 7,595,165    
Residential mortgage loans repurchase liability 141,581    
Derivative liabilities 18,980    
Excess spread financing, at fair value 28,078    
Contingent consideration 45,569    
Liabilities, fair value 29,310,658    
Recurring Basis | Fair Value | Level 1      
Investments in:      
Excess mortgage servicing rights, at fair value 0    
Excess mortgage servicing rights, equity method investees, at fair value 0    
Mortgage servicing rights, at fair value 0    
Mortgage servicing rights financing receivables, at fair value 0    
Servicer advance investments, at fair value 0    
Real estate and other securities, available-for-sale    
Residential mortgage loans, held-for-investment 0    
Residential mortgage loans, held-for-sale 0    
Residential mortgage loans, held-for-sale 0    
Residential mortgage loans, held-for-investment, at fair value 0    
Residential mortgage loans subject to repurchase 0    
Consumer loans, held-for-investment 0    
Derivative assets 0    
Cash and cash equivalents 406,038    
Restricted cash 159,151    
Other assets(B) 12,015    
Assets, fair value 577,204    
Liabilities      
Repurchase agreements 0    
Notes and bonds payable 0    
Residential mortgage loans repurchase liability 0    
Derivative liabilities 0    
Excess spread financing, at fair value 0    
Contingent consideration 0    
Liabilities, fair value 0    
Recurring Basis | Fair Value | Level 2      
Investments in:      
Excess mortgage servicing rights, at fair value 0    
Excess mortgage servicing rights, equity method investees, at fair value 0    
Mortgage servicing rights, at fair value 0    
Mortgage servicing rights financing receivables, at fair value 0    
Servicer advance investments, at fair value 0    
Real estate and other securities, available-for-sale 3,307,858    
Residential mortgage loans, held-for-investment 0    
Residential mortgage loans, held-for-sale 0    
Residential mortgage loans, held-for-sale 783,502    
Residential mortgage loans, held-for-investment, at fair value 0    
Residential mortgage loans subject to repurchase 141,581    
Consumer loans, held-for-investment 0    
Derivative assets 241    
Cash and cash equivalents 0    
Restricted cash 0    
Other assets(B) 0    
Assets, fair value 4,233,182    
Liabilities      
Repurchase agreements 21,481,285    
Notes and bonds payable 0    
Residential mortgage loans repurchase liability 141,581    
Derivative liabilities 17,628    
Excess spread financing, at fair value 0    
Contingent consideration 0    
Liabilities, fair value 21,640,494    
Recurring Basis | Fair Value | Level 3      
Investments in:      
Excess mortgage servicing rights, at fair value 411,537    
Excess mortgage servicing rights, equity method investees, at fair value 133,468    
Mortgage servicing rights, at fair value 2,976,008    
Mortgage servicing rights financing receivables, at fair value 1,941,139    
Servicer advance investments, at fair value 637,914    
Real estate and other securities, available-for-sale 8,817,968    
Residential mortgage loans, held-for-investment 522,514    
Residential mortgage loans, held-for-sale 1,178,027    
Residential mortgage loans, held-for-sale 4,805,038    
Residential mortgage loans, held-for-investment, at fair value 117,155    
Residential mortgage loans subject to repurchase 0    
Consumer loans, held-for-investment 955,076    
Derivative assets 22,888    
Cash and cash equivalents 0    
Restricted cash 0    
Other assets(B) 16,811    
Assets, fair value 22,535,543    
Liabilities      
Repurchase agreements 0    
Notes and bonds payable 7,595,165    
Residential mortgage loans repurchase liability 0    
Derivative liabilities 1,352    
Excess spread financing, at fair value 28,078    
Contingent consideration 45,569    
Liabilities, fair value $ 7,670,164