Quarterly report pursuant to Section 13 or 15(d)

Schedule of Available-for-sale Securities Reconciliation, Non-Agency Unamortized Net Discount and Designated Credit Reserves (Details)

v3.20.2
Schedule of Available-for-sale Securities Reconciliation, Non-Agency Unamortized Net Discount and Designated Credit Reserves (Details) - Mortgage-backed Securities, Issued by Private Enterprises [Member]
$ in Thousands
 6 Months Ended
Jun. 30, 2019
USD ($)
Debt Securities, Available-for-sale, Designated Credit Reserve [Member]  
Debt Securities, Available-for-sale, Unamortized Discount [Roll Forward]  
Total discount/premium on available-for-sale securities, beginning balance $ (1,322,762)
Acquisitions (336,914)
Accretion of net discount 0
Realized credit losses 12,353
Reclassification adjustment for other-than-temporary impairments (2,511)
Transfers from (to) 11,520
Sales, calls, other (1,741)
Total discount/premium on available-for-sale securities, ending balance (1,640,055)
Debt Securities, Available-for-sale, Net Unamortized Discount/Premium [Member]  
Debt Securities, Available-for-sale, Unamortized Discount [Roll Forward]  
Total discount/premium on available-for-sale securities, beginning balance (603,591)
Acquisitions 5,911
Accretion of net discount 23,822
Realized credit losses 0
Reclassification adjustment for other-than-temporary impairments 0
Transfers from (to) (11,520)
Sales, calls, other 90,669
Total discount/premium on available-for-sale securities, ending balance (494,709)
Debt Securities, Available-for-sale, Total Discount/Premium [Member]  
Debt Securities, Available-for-sale, Unamortized Discount [Roll Forward]  
Total discount/premium on available-for-sale securities, beginning balance (1,926,353)
Acquisitions (331,003)
Accretion of net discount 23,822
Realized credit losses 12,353
Reclassification adjustment for other-than-temporary impairments (2,511)
Transfers from (to) 0
Sales, calls, other 88,928
Total discount/premium on available-for-sale securities, ending balance $ (2,134,764)