Annual report pursuant to Section 13 and 15(d)

Available-for-Sale Securities, Weighted Average Life Classifications (Details)

v3.22.0.1
Available-for-Sale Securities, Weighted Average Life Classifications (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]    
Less than or equal to 1 year $ 2,367  
Greater than 1 year and less than or equal to 3 years 92,476  
Greater than 3 years and less than or equal to 5 years 3,574,202  
Greater than 5 years and less than or equal to 10 years 3,491,656  
Greater than 10 years 1,002  
Available-for-sale securities, at fair value 7,161,703 $ 14,650,922
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]    
Debt Securities, Available-for-sale [Line Items]    
Less than or equal to 1 year 2,367  
Greater than 1 year and less than or equal to 3 years 91,141  
Greater than 3 years and less than or equal to 5 years 3,572,838  
Greater than 5 years and less than or equal to 10 years 3,482,051  
Greater than 10 years 1,002  
Available-for-sale securities, at fair value 7,149,399 14,637,891
Mortgage-backed Securities, Issued by Private Enterprises [Member]    
Debt Securities, Available-for-sale [Line Items]    
Less than or equal to 1 year 0  
Greater than 1 year and less than or equal to 3 years 1,335  
Greater than 3 years and less than or equal to 5 years 1,364  
Greater than 5 years and less than or equal to 10 years 9,605  
Greater than 10 years 0  
Available-for-sale securities, at fair value $ 12,304 $ 13,031