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INVESTMENTS (Tables)
12 Months Ended
Dec. 31, 2025
INVESTMENTS  
Schedule of marketable securities

2025

2024

Amortized

  ​ ​ ​

Market

  ​ ​ ​

Amortized

  ​ ​ ​

Market

Cost

  ​ ​ ​

Value

  ​ ​ ​

Cost

  ​ ​ ​

Value

(Dollars in thousands)

Marketable securities:

  ​

 

  ​

 

  ​

 

  ​

Current

$

1,425

$

1,424

$

852

$

848

Due from one through five years

 

1,726

 

1,730

 

2,692

 

2,677

Due from six through ten years

 

1,734

 

1,694

 

2,837

 

2,749

Total

$

4,885

$

4,848

$

6,381

$

6,274

Schedule of unrealized gains and losses on marketable securities

2025

2024

Unrealized

  ​ ​ ​

Unrealized

  ​ ​ ​

Unrealized

  ​ ​ ​

Unrealized

Gains

  ​ ​ ​

Losses

  ​ ​ ​

Gains

  ​ ​ ​

Losses

(Dollars in thousands)

Marketable securities

$

9

$

(46)

$

5

$

(112)