Annual report pursuant to Section 13 and 15(d)

Available-for-sale Securities, Rollforward of the Allowance for Credit Losses (Details)

v3.22.4
Available-for-sale Securities, Rollforward of the Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]      
Allowance for credit losses at beginning of period $ (14,238) $ (22,528) $ (244,876)
Additions on securities for which credit losses were not previously recorded (983) (4,555) (44,359)
Reductions for securities sold     246,792
Increase (decrease) on securities with previously recorded credit losses (1,747) (5,208) (14,081)
Writeoffs 10,010 18,053 36,531
Recoveries of amounts previously written off     (2,535)
Allowance for credit losses at end of period (6,958) (14,238) (22,528)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]      
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]      
Allowance for credit losses at beginning of period (12,851) (17,889) 0
Additions on securities for which credit losses were not previously recorded (482) (190) (32,931)
Reductions for securities sold     0
Increase (decrease) on securities with previously recorded credit losses (3,462) (4,542) 385
Writeoffs 10,010 9,770 14,657
Recoveries of amounts previously written off     0
Allowance for credit losses at end of period (6,785) (12,851) (17,889)
Mortgage-backed Securities, Issued by Private Enterprises [Member]      
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]      
Allowance for credit losses at beginning of period (1,387) (4,639) (244,876)
Additions on securities for which credit losses were not previously recorded (501) (4,365) (11,428)
Reductions for securities sold     246,792
Increase (decrease) on securities with previously recorded credit losses 1,715 (666) (14,466)
Writeoffs 0 8,283 21,874
Recoveries of amounts previously written off     (2,535)
Allowance for credit losses at end of period $ (173) $ (1,387) $ (4,639)