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Securities (Tables)
 12 Months Ended
Dec. 31, 2023
Securities  
Summary of available for sale debt securities

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December 31, 2023

 

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​

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Gross

    

Gross

    

​

​

 

​

​

Amortized

​

Unrealized

​

Unrealized

​

​

 

(Dollars in thousands)

​

Cost

​

Gains

​

Losses

​

Fair Value

 

U.S. Treasury securities

​

$

45,883

​

$

—

​

$

(780)

​

$

45,103

​

U.S. government agencies and corporations

​

​

96,407

​

​

—

​

​

(9,313)

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​

87,094

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Mortgage-backed securities

​

 

177,734

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185

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(16,223)

​

 

161,696

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Obligations of states and political subdivisions

​

 

148,875

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2,280

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​

(4,044)

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147,111

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Corporate and other debt securities

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​

25,193

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—

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(3,753)

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​

21,440

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$

494,092

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$

2,465

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$

(34,113)

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$

462,444

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​

​

​

​

​

​

​

​

​

​

December 31, 2022

 

​

    

​

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Gross

    

Gross

    

​

​

 

​

​

Amortized

​

Unrealized

​

Unrealized

​

​

 

(Dollars in thousands)

​

Cost

​

Gains

​

Losses

​

Fair Value

 

U.S. Treasury securities

​

$

60,886

​

$

—

​

$

(2,053)

​

$

58,833

​

U.S. government agencies and corporations

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​

143,241

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​

—

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​

(12,967)

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​

130,274

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Mortgage-backed securities

​

 

200,393

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65

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(20,540)

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179,918

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Obligations of states and political subdivisions

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127,317

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300

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(6,790)

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120,827

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Corporate and other debt securities

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25,291

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—

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(2,552)

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22,739

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​

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$

557,128

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$

365

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$

(44,902)

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$

512,591

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Schedule of amortized cost and estimated fair value of securities, by the earlier of contractual maturity or expected maturity

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December 31, 2023

 

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Amortized

    

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(Dollars in thousands)

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Cost

​

Fair Value

 

Due in one year or less

​

$

113,791

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$

110,669

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Due after one year through five years

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181,243

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166,910

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Due after five years through ten years

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118,265

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105,879

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Due after ten years

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80,793

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78,986

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$

494,092

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$

462,444

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Schedule of gross realized gains and losses and the proceeds

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Year Ended December 31, 

(Dollars in thousands)

    

2023

    

2022

 

2021

Realized gains from sales, maturities and calls of securities:

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Gross realized gains

​

$

—

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$

—

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$

42

Gross realized losses

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(5)

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—

​

 

—

Net realized losses

​

$

(5)

​

$

—

​

$

42

Proceeds from sales, maturities, calls and paydowns of securities

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$

100,812

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$

55,328

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$

114,019
Schedule of securities in an unrealized loss position

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​

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Less Than 12 Months

​

12 Months or More

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Total

 

​

 

Fair

 

Unrealized

 

Fair

 

Unrealized

 

Fair

 

Unrealized

 

(Dollars in thousands)

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Value

​

Loss

​

Value

​

Loss

​

   Value   

​

Loss

 

U.S. Treasury securities

​

$

—

​

​

—

​

$

45,103

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$

780

​

$

45,103

​

$

780

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U.S. government agencies and corporations

​

​

—

​

​

—

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​

87,094

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​

9,313

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​

87,094

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​

9,313

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Mortgage-backed securities

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5,528

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68

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150,023

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16,155

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155,551

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16,223

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Obligations of states and political subdivisions

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4,659

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72

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65,630

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3,972

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70,289

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4,044

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Corporate and other debt securities

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​

3,386

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364

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18,054

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​

3,389

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21,440

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​

3,753

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Total temporarily impaired securities

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$

13,573

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$

504

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$

365,904

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$

33,609

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$

379,477

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$

34,113

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Less Than 12 Months

​

12 Months or More

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Total

 

​

 

Fair

 

Unrealized

 

Fair

 

Unrealized

 

Fair

 

Unrealized

 

(Dollars in thousands)

​

Value

​

Loss

​

Value

​

Loss

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   Value   

​

Loss

 

U.S. Treasury securities

​

$

50,556

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$

1,368

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$

8,277

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$

685

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$

58,833

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$

2,053

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U.S. government agencies and corporations

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​

71,948

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​

1,578

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58,326

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11,389

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130,274

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​

12,967

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Mortgage-backed securities

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​

73,301

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5,441

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104,563

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15,099

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177,864

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20,540

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Obligations of states and political subdivisions

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​

60,838

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2,434

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32,120

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​

4,356

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92,958

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​

6,790

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Corporate and other debt securities

​

 

15,049

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1,702

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6,681

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850

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21,730

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2,552

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Total temporarily impaired securities

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$

271,692

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$

12,523

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$

209,967

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$

32,379

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$

481,659

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$

44,902

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