v3.26.1
Held-to-Maturity Securities
3 Months Ended
Mar. 31, 2026
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss [Abstract]  
fhlbd_HeldToMaturitySecuritiesDisclosureTextBlock Held-to-Maturity Securities
     Major Security Types. Held-to-maturity securities as of March 31, 2026 and December 31, 2025, all of which were GSE residential MBS, were as follows (in thousands):
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Estimated
Fair
Value
March 31, 2026$985,529 $5,931 $1,812 $989,648 
December 31, 2025$1,048,479 $2,334 $2,181 $1,048,632 

In the table above, amortized cost includes net purchase discounts of $909,000 at both March 31, 2026 and December 31, 2025. Amortized cost excludes accrued interest of $851,000 and $948,000 at March 31, 2026 and December 31, 2025, respectively.
Interest Rate Payment Terms. At March 31, 2026 and December 31, 2025, all of the Bank's held-to-maturity securities were variable-rate securities. All of the Bank’s variable-rate MBS classified as held-to-maturity securities were collateralized mortgage obligations which have coupon rates that are subject to interest rate caps, none of which were reached during 2025 or the three months ended March 31, 2026.
Sales of Securities. There were no sales of held-to-maturity securities during the three months ended March 31, 2026 or 2025.