Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Available-for-Sale Securities, Weighted Average Life Classifications (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]    
Less than or equal to 1 year $ 4,839  
Greater than 1 year and less than or equal to 3 years 123,394  
Greater than 3 years and less than or equal to 5 years 4,710,108  
Greater than 5 years and less than or equal to 10 years 3,000,643  
Greater than 10 years 1,062  
Available-for-sale securities, at fair value 7,840,046 $ 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 4,839  
Greater than 1 year and less than or equal to 3 years 117,835  
Greater than 3 years and less than or equal to 5 years 4,710,108  
Greater than 5 years and less than or equal to 10 years 3,000,643  
Greater than 10 years 1,062  
Available-for-sale securities, at fair value 7,834,487 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 5,559  
Greater than 3 years and less than or equal to 5 years 0  
Greater than 5 years and less than or equal to 10 years 0  
Greater than 10 years 0  
Available-for-sale securities, at fair value $ 5,559 $ 13,031