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INVESTMENTS (Tables)
 12 Months Ended
Dec. 31, 2022
INVESTMENTS  
Schedule of marketable securities

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​

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​

​

​

​

​

​

​

​

​

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2022

​

2021

​

    

Amortized

    

Market

    

Amortized

    

Market

​

    

Cost

    

Value

    

Cost

    

Value

​

​

(Dollars in thousands)

Marketable securities:

 

​

  

 

​

  

 

​

  

 

​

  

Current

​

$

1,385

​

$

1,381

​

$

219

​

$

223

Due from one through five years

​

 

3,977

​

 

3,950

​

 

6,503

​

 

6,805

Due from six through ten years

​

 

2,347

​

 

2,455

​

 

2,479

​

 

2,790

Due from eleven through twenty years

​

 

799

​

 

773

​

 

1,014

​

 

1,102

Total

​

$

8,508

​

$

8,559

​

$

10,215

​

$

10,920

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Schedule of unrealized gains on marketable securities

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​

​

​

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​

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2022

​

2021

​

    

Unrealized

    

Unrealized

    

Unrealized

    

Unrealized

​

    

Gains

    

Losses

    

Gains

    

Losses

​

​

(Dollars in thousands)

Marketable securities

​

$

145

​

$

(94)

​

$

705

​

$

—

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