Quarterly report pursuant to Section 13 or 15(d)

Fair Value, Measurement Inputs, Disclosure (Details)

v3.22.2.2
Fair Value, Measurement Inputs, Disclosure (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Debt Securities, Available-for-sale, Categorized as Level 2 Assets 98.70%          
Debt Securities, Available-for-sale, Categorized as Level 3 Assets 1.30%          
Mortgage Servicing Rights Categorized as Level 3 Assets 100.00%          
Other RMBS Classified as Derivatives Categorized as Level 2 Assets 100.00%          
Other Derivatives Categorized as Level 1 Assets (Liabilities) 100.00%          
Mortgage servicing rights $ 3,021,790 $ 3,226,191 $ 2,191,578 $ 2,213,312 $ 2,020,106 $ 1,596,153
Derivative assets, at fair value 18,406   80,134      
Derivative liabilities, at fair value 107,379   53,658      
Fair Value, Recurring [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale securities 9,473,843   7,161,703      
Mortgage servicing rights 3,021,790   2,191,578      
Derivative assets, at fair value 18,406   80,134      
Total assets 12,514,039   9,433,415      
Derivative liabilities, at fair value 107,379   53,658      
Total liabilities 107,379   53,658      
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale securities 0   0      
Mortgage servicing rights 0   0      
Derivative assets, at fair value 1,687   38,767      
Total assets 1,687   38,767      
Derivative liabilities, at fair value 107,379   1,915      
Total liabilities 107,379   1,915      
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale securities 9,348,983   7,149,399      
Mortgage servicing rights 0   0      
Derivative assets, at fair value 16,719   41,367      
Total assets 9,365,702   7,190,766      
Derivative liabilities, at fair value 0   51,743      
Total liabilities 0   51,743      
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Available-for-sale securities 124,860   12,304      
Mortgage servicing rights 3,021,790   2,191,578      
Derivative assets, at fair value 0   0      
Total assets 3,146,650   2,203,882      
Derivative liabilities, at fair value 0   0      
Total liabilities $ 0   $ 0