v3.25.2
Investment Securities (Tables)
 6 Months Ended
Jun. 30, 2025
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, 2025
 Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair Value
 (In Thousands)
Investment securities available-for-sale:
GSE debentures
$191,885 $417 $14,617 $177,685 
GSE CMOs60,498 35 6,466 54,067 
GSE MBSs155,443 92 14,348 141,187 
Municipal obligations19,229 27 310 18,946 
Corporate debt obligations12,205 308 287 12,226 
U.S. Treasury bonds478,139 1,407 17,473 462,073 
Foreign government obligations500 — — 500 
Total investment securities available-for-sale$917,899 $2,286 $53,501 $866,684 
 December 31, 2024
 Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair Value
 (In Thousands)
Investment securities available-for-sale:
GSE debentures$195,099 $225 $19,030 $176,294 
GSE CMOs62,567 4 7,028 55,543 
GSE MBSs166,843 63 18,621 148,285 
Municipal obligations20,526 19 291 20,254 
Corporate debt obligations12,140 225 78 12,287 
U.S. Treasury bonds506,714 331 25,173 481,872 
Foreign government obligations500 — 1 499 
Total investment securities available-for-sale$964,389 $867 $70,222 $895,034 
Schedule of Investment Securities in a Continuous Unrealized Loss Position
Investment securities as of June 30, 2025 and December 31, 2024 that have been in a continuous unrealized loss position for less than twelve months or twelve months or longer are as follows:
 At June 30, 2025
 Less than
Twelve Months		Twelve Months
or Longer		Total
 Estimated
Fair Value		Unrealized
Losses		Estimated
Fair Value		Unrealized
Losses		Estimated
Fair Value		Unrealized
Losses
 (In Thousands)
Investment securities available-for-sale:      
GSE debentures$— $— $126,331 $14,617 $126,331 $14,617 
GSE CMOs— — 48,791 6,466 48,791 6,466 
GSE MBSs3,237 88 132,244 14,260 135,481 14,348 
Municipal obligations655 8 6,888 302 7,543 310 
Corporate debt obligations— — 2,364 287 2,364 287 
U.S. Treasury bonds— — 274,404 17,473 274,404 17,473 
Temporarily impaired investment securities available-for-sale3,892 96 591,022 53,405 594,914 53,501 
Total temporarily impaired investment securities$3,892 $96 $591,022 $53,405 $594,914 $53,501 
 At December 31, 2024
 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$30,753 $281 $107,750 $18,749 $138,503 $19,030 
GSE CMOs4,664 107 50,334 6,921 54,998 7,028 
GSE MBSs11,128 596 131,481 18,025 142,609 18,621 
Municipal obligations3,616 74 3,568 217 7,184 291 
Corporate debt obligations— — 2,550 78 2,550 78 
U.S. Treasury bonds67,290 285 291,641 24,888 358,931 25,173 
Foreign government obligations— — 499 1 499 1 
Temporarily impaired investment securities available-for-sale117,451 1,343 587,823 68,879 705,274 70,222 
Total temporarily impaired investment securities$117,451 $1,343 $587,823 $68,879 $705,274 $70,222 
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, 2025At December 31, 2024
 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$162,929 $162,170 3.23 %$103,337 $102,457 3.22 %
After 1 year through 5 years430,637 415,834 3.03 %449,289 434,608 3.32 %
After 5 years through 10 years160,283 144,229 1.86 %207,980 180,370 1.77 %
Over 10 years164,050 144,451 3.31 %203,783 177,599 3.13 %
$917,899 $866,684 2.92 %$964,389 $895,034 2.96 %