Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
Schedule of Available-for-sale Securities Reconciliation (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face $ 11,359,220   $ 10,008,932      
Unamortized Premium 246,091   243,639      
Accretable Purchase Discount (135,059)   (33,638)      
Amortized Cost 9,497,257   8,114,627      
Allowance for Credit Losses (4,556) $ 5,360 (6,958) $ (8,535) $ (9,663) $ (14,238)
Unrealized Gain 1,345   8,745      
Unrealized Loss (663,320)   (337,680)      
Available-for-sale securities, at fair value 8,830,726   7,778,734      
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]            
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face 10,292,550   8,745,143      
Unamortized Premium 238,457   235,128      
Accretable Purchase Discount (135,039)   (33,413)      
Amortized Cost 9,488,972   7,982,992      
Allowance for Credit Losses (4,255) (5,087) (6,785) (8,325) (9,403) (12,851)
Unrealized Gain 705   8,200      
Unrealized Loss (662,557)   (330,831)      
Available-for-sale securities, at fair value 8,822,865   7,653,576      
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises, Principal and Interest            
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face 9,385,554   7,781,277      
Unamortized Premium 177,512   189,246      
Accretable Purchase Discount (135,039)   (33,413)      
Amortized Cost 9,428,027   7,937,110      
Allowance for Credit Losses 0   0      
Unrealized Gain 2   6,310      
Unrealized Loss (656,964)   (325,960)      
Available-for-sale securities, at fair value 8,771,065   7,617,460      
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises, Interest-Only-Strip            
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face 906,996   963,866      
Unamortized Premium 60,945   45,882      
Accretable Purchase Discount 0   0      
Amortized Cost 60,945   45,882      
Allowance for Credit Losses (4,255)   (6,785)      
Unrealized Gain 703   1,890      
Unrealized Loss (5,593)   (4,871)      
Available-for-sale securities, at fair value 51,800   36,116      
Mortgage-backed Securities, Issued by Private Enterprises [Member]            
Debt Securities, Available-for-sale [Line Items]            
Principal/Current Face 1,066,670   1,263,789      
Unamortized Premium 7,634   8,511      
Accretable Purchase Discount (20)   (225)      
Amortized Cost 8,285   131,635      
Allowance for Credit Losses (301) $ (273) (173) $ (210) $ (260) $ (1,387)
Unrealized Gain 640   545      
Unrealized Loss (763)   (6,849)      
Available-for-sale securities, at fair value $ 7,861   $ 125,158