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Securities (Tables)
 3 Months Ended
Mar. 31, 2026
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-Sale Securities
The following table summarizes available-for-sale debt securities held by the Company at March 31, 2026 and December 31, 2025:
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
March 31, 2026
U.S. Treasuries$45,577 $131 $1,966 $43,742 
Obligations of U.S. Government sponsored entities348,769 4,052 12,312 340,509 
Obligations of U.S. states and political subdivisions80,622 5 5,986 74,641 
Mortgage-backed securities – residential, issued by
 U.S. Government agencies308,634 358 2,537 306,455 
 U.S. Government sponsored entities621,668 4,863 5,419 621,112 
U.S. corporate debt securities2,500 0 49 2,451 
Total available-for-sale debt securities$1,407,770 $9,409 $28,269 $1,388,910 
December 31, 2025
U.S. Treasuries$55,492 $213 $1,925 $53,780 
Obligations of U.S. Government sponsored entities354,128 5,928 11,653 348,403 
Obligations of U.S. states and political subdivisions81,517 7 5,214 76,310 
Mortgage-backed securities – residential, issued by
U.S. Government agencies315,001 852 2,357 313,496 
U.S. Government sponsored entities582,741 6,712 1,821 587,632 
U.S. corporate debt securities2,500 0 53 2,447 
Total available-for-sale debt securities$1,391,379 $13,712 $23,023 $1,382,068 
Schedule of Held to Maturity Securities
The following table summarizes held-to-maturity debt securities held by the Company at March 31, 2026 and December 31, 2025:
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
March 31, 2026
U.S. Treasuries$85,775 $0 $7,347 $78,428 
Obligations of U.S. Government sponsored entities226,770 0 22,609 204,161 
Total held-to-maturity debt securities$312,545 $0 $29,956 $282,589 
December 31, 2025
U.S. Treasuries$85,831 $0 $7,037 $78,794 
Obligations of U.S. Government sponsored entities226,697 0 21,631 205,066 
Total held-to-maturity debt securities$312,528 $0 $28,668 $283,860 
The following table summarizes held-to-maturity debt securities that had unrealized losses at March 31, 2026 and December 31, 2025:
Less than 12 Months12 Months or LongerTotal
(In thousands)Fair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
March 31, 2026
U.S. Treasuries$0 $0 $78,428 $7,347 $78,428 $7,347 
Obligations of U.S. Government sponsored entities0 0 204,161 22,609 204,161 22,609 
Total held-to-maturity debt securities$0 $0 $282,589 $29,956 $282,589 $29,956 
December 31, 2025
U.S. Treasuries$0 $0 $78,794 $7,037 $78,794 $7,037 
Obligations of U.S. Government sponsored entities0 0 205,066 21,631 205,066 21,631 
Total held-to-maturity debt securities$0 $0 $283,860 $28,668 $283,860 $28,668 
March 31, 2026December 31, 2025
(In thousands)Amortized CostFair ValueAmortized CostFair Value
Held-to-maturity debt securities:
Due after one year through five years$189,679 $173,185 $174,870 $160,547 
Due after five years through ten years122,866 109,404 137,658 123,313 
Total held-to-maturity debt securities$312,545 $282,589 $312,528 $283,860 
Schedule of Debt Securities, Available for Sale with Unrealized Losses The following table summarizes available-for-sale debt securities that had unrealized losses at March 31, 2026 and December 31, 2025:
Less than 12 Months12 Months or LongerTotal
(In thousands)Fair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
March 31, 2026
U.S. Treasuries$0 $0 $28,906 $1,966 $28,906 $1,966 
Obligations of U.S. Government sponsored entities26,669 189 141,157 12,123 167,826 12,312 
Obligations of U.S. states and political subdivisions9,391 56 61,099 5,930 70,490 5,986 
Mortgage-backed securities – residential, issued by
U.S. Government agencies187,441 2,289 11,620 248 199,061 2,537 
U.S. Government sponsored entities422,096 4,976 7,889 443 429,985 5,419 
U.S. corporate debt securities0 0 2,451 49 2,451 49 
Total available-for-sale debt securities$645,597 $7,510 $253,122 $20,759 $898,719 $28,269 
December 31, 2025
U.S. Treasuries$0 $0 $38,936 $1,925 $38,936 $1,925 
Obligations of U.S. Government sponsored entities0 0 141,606 11,653 141,606 11,653 
Obligations of U.S. states and political subdivisions2,530 2 65,279 5,212 67,809 5,214 
Mortgage-backed securities – residential, issued by
U.S. Government agencies179,250 2,129 12,051 228 191,301 2,357 
U.S. Government sponsored entities291,424 1,452 7,990 369 299,414 1,821 
U.S. corporate debt securities0 0 2,447 53 2,447 53 
Total available-for-sale debt securities$473,204 $3,583 $268,309 $19,440 $741,513 $23,023 
Schedule of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity
The amortized cost and estimated fair value of debt securities by contractual maturity are shown in the following table. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Mortgage-backed securities are shown separately since they are not due at a single maturity date.
March 31, 2026December 31, 2025
(In thousands)Amortized CostFair ValueAmortized CostFair Value
Available-for-sale debt securities:
Due in one year or less$62,719 $62,637 $74,224 $74,109 
Due after one year through five years229,088 220,345 238,913 231,336 
Due after five years through ten years185,661 178,361 180,500 175,495 
Total477,468 461,343 493,637 480,940 
Mortgage-backed securities930,302 927,567 897,742 901,128 
Total available-for-sale debt securities$1,407,770 $1,388,910 $1,391,379 $1,382,068