Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.2.2
Available-for-sale Securities, Rollforward of the Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]        
Allowance for credit losses at beginning of period $ (9,663) $ (17,765) $ (14,238) $ (22,528)
Additions on securities for which credit losses were not previously recorded (605) (26) (899) (3,907)
Increase (decrease) on securities with previously recorded credit losses (792) (133) (2,149) (2,509)
Writeoffs 2,525 2,495 8,751 13,515
Allowance for credit losses at end of period (8,535) (15,429) (8,535) (15,429)
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 (9,403) (15,154) (12,851) (17,889)
Additions on securities for which credit losses were not previously recorded (427) (26) (462) (57)
Increase (decrease) on securities with previously recorded credit losses (1,020) (1,156) (3,763) (3,293)
Writeoffs 2,525 2,336 8,751 7,239
Allowance for credit losses at end of period (8,325) (14,000) (8,325) (14,000)
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 (260) (2,611) (1,387) (4,639)
Additions on securities for which credit losses were not previously recorded (178) 0 (437) (3,850)
Increase (decrease) on securities with previously recorded credit losses 228 1,023 1,614 784
Writeoffs 0 159 0 6,276
Allowance for credit losses at end of period $ (210) $ (1,429) $ (210) $ (1,429)