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Investment Securities
12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Investment Securities Investment Securities
Marketable Equity Securities
The Company held marketable equity securities with fair values of $8.7 million and $13.2 million at December 31, 2024 and 2023, respectively. The gross realized and unrealized gains (losses) recognized on marketable equity securities in other operating income in the Company's Consolidated Statements of Income for the periods indicated were as follows:    
(In Thousands)202420232022
Unrealized gain (loss) on marketable equity securities$465 $120 ($1,119)
Gain on sale of marketable equity securities, net112 — — 
Total$577 $120 ($1,119)
Debt securities
Debt securities have been classified in the financial statements as available for sale or held to maturity. The following table summarizes the amortized cost, estimated fair value, and ACL of debt securities and the corresponding amounts of gross unrealized gains and losses of available for sale securities recognized in accumulated other comprehensive income (loss) and unrecognized gains and losses of held to maturity securities at the periods indicated:
(In Thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesAllowance for Credit LossesFair Value
December 31, 2024    
Securities available for sale    
U.S. Treasury and government sponsored entities$444,370 $294 ($11,733)$— $432,931 
Corporate bonds9,009 (223)— 8,795 
Collateralized loan obligations36,827 66 (2)— 36,891 
Total securities available for sale$490,206 $369 ($11,958)$— $478,617 
December 31, 2023
Securities available for sale
U.S. Treasury and government sponsored entities$587,639 $451 ($23,965)$— $564,125 
Municipal securities820 — (4)— 816 
Corporate bonds14,014 28 (418)— 13,624 
Collateralized loan obligations59,795 12 (436)— 59,371 
Total securities available for sale$662,268 $491 ($24,823)$— $637,936 
(In Thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesFair Value
December 31, 2024   
Securities held to maturity
Corporate bonds$36,750 $175 ($1,175)$35,750 
Allowance for credit losses— — — — 
Total securities held to maturity, net of ACL$36,750 $175 ($1,175)$35,750 
December 31, 2023
Securities held to maturity
Corporate bonds$36,750 $— ($3,337)$33,413 
Allowance for credit losses— — — — 
Total securities held to maturity, net of ACL$36,750 $— ($3,337)$33,413 

    Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2024 and 2023, were as follows:
 Less Than 12 MonthsMore Than 12 MonthsTotal
(In Thousands)Fair
Value
Unrealized LossesFair
Value
Unrealized LossesFair
Value
Unrealized Losses
2024      
Securities Available for Sale      
U.S. Treasury and government sponsored entities$44,262 ($422)$358,446 ($11,311)$402,708 ($11,733)
Corporate bonds— — 4,786 (223)4,786 (223)
Collateralized loan obligations— — 4,993 (2)4,993 (2)
Total$44,262 ($422)$368,225 ($11,536)$412,487 ($11,958)
2023      
Securities Available for Sale      
U.S. Treasury and government sponsored entities$9,997 ($3)$528,574 ($23,962)$538,571 ($23,965)
Municipal securities— — 816 (4)816 (4)
Corporate bonds— — 6,599 (418)6,599 (418)
Collateralized loan obligations3,909 (91)43,149 (345)47,058 (436)
Total$13,906 ($94)$579,138 ($24,729)$593,044 ($24,823)
    
Management evaluates available for sale debt securities in unrealized loss positions to determine whether the impairment is due to credit-related factors or noncredit-related factors. Consideration is given to the extent to which the fair value is less than cost, the financial condition and near-term prospects of the issuer, and the intent and ability of the Company to retain its investment in the security for a period of time sufficient to allow for any anticipated recovery in fair value.    

At December 31, 2024 and 2023, there were four and two available for sale securities in an unrealized loss position without an ACL, respectively, that have been in a loss position for less than twelve months. There were 40 and 72 available for sale securities without an ACL with unrealized losses at December 31, 2024 and 2023, respectively, that have been at a loss position for more than twelve months. At both December 31, 2024 and 2023, there were zero held to maturity securities in an unrealized loss position without an ACL that have been in a loss position for less than twelve months. At December 31, 2024 and 2023, there were three and five held to maturity securities in an unrealized loss position without an ACL, respectively, that have been in a loss position for more than twelve months. Management does not have the intent to sell any of these securities and believes that it is more likely than not that the Company will not have to sell any such securities before a recovery of cost. The fair value is expected to recover as the securities approach their maturity date or repricing date or if market yields for such investments decline. Accordingly, as of December 31, 2024, management believes that the unrealized losses detailed in the previous table are due to noncredit-related factors, including changes in interest rates and other market conditions, and therefore no losses have been recognized in the Company's Consolidated Statements of Income.
    At December 31, 2024 and 2023, $177.4 million and $180.1 million in securities were pledged for deposits and borrowings, respectively. 

    The amortized cost and fair values of available for sale and held to maturity debt securities at December 31, 2024, are distributed by contractual maturity as shown below.  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.  
(In  Thousands)Amortized CostFair ValueWeighted Average Yield
U.S. Treasury and government sponsored entities   
Within 1 year$130,776 $129,175 1.81 %
1-5 years313,594 303,756 2.22 %
Total$444,370 $432,931 2.10 %
Corporate bonds   
Within 1 year$3,999 $4,008 5.91 %
1-5 years15,010 14,764 4.16 %
5-10 years26,750 25,773 5.01 %
Total$45,759 $44,545 4.81 %
Collateralized loan obligations   
5-10 years$22,827 $22,859 6.26 %
Over 10 years14,000 14,032 6.38 %
Total$36,827 $36,891 6.30 %

    The proceeds and resulting gains and losses, computed using specific identification, from sales of investment securities for the years ending December 31, 2024, 2023, and 2022, respectively, are as follows: 
(In Thousands)ProceedsGross GainsGross Losses
2024   
Available for sale securities$— $— $— 
2023   
Available for sale securities$— $— $— 
2022   
Available for sale securities$— $— $— 

    A summary of interest income for the years ending December 31, 2024, 2023, and 2022 on available for investment securities is as follows:
(In Thousands)202420232022
U.S. Treasury and government sponsored entities$9,810 $11,074 $7,030 
Other3,943 4,741 2,631 
Total taxable interest income$13,753 $15,815 $9,661 
Municipal securities$3 $18 $18 
Total tax-exempt interest income$3 $18 $18 
Total$13,756 $15,833 $9,679