Quarterly report pursuant to Section 13 or 15(d)

Schedule of Available-for-sale Securities Reconciliation (Details)

v3.21.2
Schedule of Available-for-sale Securities Reconciliation (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Mar. 31, 2020
Jan. 01, 2020
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face $ 12,323,303   $ 18,848,276      
Unamortized Premium 734,078   937,537      
Accretable Purchase Discount (45)   (50)      
Amortized Cost 7,547,709   14,043,175     $ 30,700,000
Allowance for Credit Losses (17,765) $ (18,170) (22,528) $ (42,583) $ (41,390) (244,876)
Unrealized Gain 322,085   644,868      
Unrealized Loss (11,983)   (14,593)      
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]            
Principal/Current Face 11,087,086   16,752,911      
Unamortized Premium 725,284   921,129      
Accretable Purchase Discount (13)   (14)      
Amortized Cost 7,537,574   14,024,470      
Allowance for Credit Losses (15,154) (16,699) (17,889) (30,634) (32,786) 0
Unrealized Gain 322,034   644,759      
Unrealized Loss (9,967)   (13,449)      
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]            
Principal/Current Face 1,236,217   2,095,365      
Unamortized Premium 8,794   16,408      
Accretable Purchase Discount (32)   (36)      
Amortized Cost 10,135   18,705      
Allowance for Credit Losses (2,611) $ (1,471) (4,639) $ (11,949) $ (8,604) $ (244,876)
Unrealized Gain 51   109      
Unrealized Loss (2,016)   (1,144)      
Available-for-sale securities, at fair value 5,559   13,031      
Fixed Income Securities [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]            
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face 6,812,303   13,103,355      
Unamortized Premium 305,809   605,253      
Accretable Purchase Discount (13)   (14)      
Amortized Cost 7,118,099   13,708,594      
Allowance for Credit Losses 0   0      
Unrealized Gain 291,473   629,079      
Unrealized Loss (341)   (420)      
Available-for-sale securities, at fair value 7,409,231   14,337,253      
Interest-Only-Strip [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]            
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face 4,274,783   3,649,556      
Unamortized Premium 419,475   315,876      
Accretable Purchase Discount 0   0      
Amortized Cost 419,475   315,876      
Allowance for Credit Losses (15,154)   (17,889)      
Unrealized Gain 30,561   15,680      
Unrealized Loss (9,626)   (13,029)      
Available-for-sale securities, at fair value $ 425,256   $ 300,638