v3.26.1
Investment Securities (Tables)
 6 Months Ended
Jun. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Schedule of Securities Available-for-Sale Securities
The following tables set forth investment securities available-for-sale at the dates indicated:
At June 30, 2026
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair Value
(In Thousands)
Investment securities available-for-sale:
GSE debentures
$199,337 $136 $13,261 $186,212 
GSE CMOs672,314 566 14,886 657,994 
GSE MBSs317,137 604 12,969 304,772 
Municipal obligations220,340 7,045 136 227,249 
Corporate debt obligations24,530 771 166 25,135 
U.S. Treasury bonds374,495 237 15,297 359,435 
Foreign government obligations500 — — 500 
Total investment securities available-for-sale$1,808,653 $9,359 $56,715 $1,761,297 
December 31, 2025
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair Value
(In Thousands)
Investment securities available-for-sale:
GSE debentures$185,449 $512 $12,284 $173,677 
GSE CMOs500,446 2,784 6,660 496,570 
GSE MBSs334,476 3,009 11,740 325,745 
Municipal obligations231,924 8,305 13 240,216 
Corporate debt obligations39,209 863 49 40,023 
U.S. Treasury bonds424,214 1,727 13,904 412,037 
Foreign government obligations500 — — 500 
Total investment securities available-for-sale$1,716,218 $17,200 $44,650 $1,688,768 
Schedule of Investment Securities in a Continuous Unrealized Loss Position
Investment securities as of June 30, 2026 and December 31, 2025 that have been in a continuous unrealized loss position for less than twelve months or twelve months or longer are as follows:
At June 30, 2026
Less than
Twelve Months		Twelve Months
or Longer		Total
Estimated
Fair Value		Unrealized
Losses		Estimated
Fair Value		Unrealized
Losses		Estimated
Fair Value		Unrealized
Losses
(In Thousands)
Investment securities available-for-sale:
GSE debentures$45,840 $245 $113,229 $13,016 $159,069 $13,261 
GSE CMOs548,569 8,400 44,699 6,486 593,268 14,886 
GSE MBSs83,231 462 117,708 12,507 200,939 12,969 
Municipal obligations11,413 59 6,411 77 17,824 136 
Corporate debt obligations9,996 166 — — 9,996 166 
U.S. Treasury bonds78,730 480 186,873 14,817 265,603 15,297 
Total temporarily impaired investment securities$777,779 $9,812 $468,920 $46,903 $1,246,699 $56,715 
At December 31, 2025
Less than
Twelve Months		Twelve Months
or Longer		Total
Estimated
Fair Value		Unrealized
Losses		Estimated
Fair Value		Unrealized
Losses		Estimated
Fair Value		Unrealized
Losses
(In Thousands)
Investment securities available-for-sale:
GSE debentures$32 $1 $103,884 $12,283 $103,916 $12,284 
GSE CMOs68,184 460 45,145 6,200 113,329 6,660 
GSE MBSs79 1 114,594 11,739 114,673 11,740 
Municipal obligations9,721 11 391 2 10,112 13 
Corporate debt obligations4,943 41 2,666 8 7,609 49 
U.S. Treasury bonds— — 203,283 13,904 203,283 13,904 
Total temporarily impaired investment securities$82,959 $514 $469,963 $44,136 $552,922 $44,650 
Schedule of Maturities of the Investments in Debt Securities
The final stated maturities of the debt securities are as follows for the periods indicated:
At June 30, 2026At December 31, 2025
Amortized
Cost		Estimated
Fair Value		Weighted
Average
Rate		Amortized
Cost		Estimated
Fair Value		Weighted
Average
Rate
(Dollars in Thousands)
Investment securities available-for-sale:
Within 1 year$82,266 $82,234 3.99 %$145,787 $146,092 3.89 %
After 1 year through 5 years522,025 497,645 3.03 %472,284 454,138 2.76 %
After 5 years through 10 years212,350 209,495 3.49 %246,784 242,931 3.56 %
Over 10 years992,012 971,923 4.27 %851,363 845,607 4.18 %
$1,808,653 $1,761,297 3.81 %$1,716,218 $1,688,768 3.69 %