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INVESTMENTS (Tables)
 12 Months Ended
Dec. 31, 2020
INVESTMENTS  
Schedule of Marketable securities

Below is a summary of the amortized cost and estimated market values of the Company’s marketable securities as of December 31, 2020 and 2019. The estimated market values provided are Level 2 valuations as defined by ASC 820.

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​

​

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2020

​

2019

​

​

Amortized

​

Market

​

Amortized

​

Market

​

    

Cost

    

Value

    

Cost

    

Value

​

​

(Dollars in thousands)

Municipal bonds:

 

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​

  

 

​

  

 

​

  

Current

​

$

2,215

​

$

2,249

​

$

5,904

​

$

5,915

Due from one through five years

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7,420

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7,830

​

 

8,336

​

 

8,621

Due from six through ten years

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3,057

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3,608

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4,255

​

 

4,618

Due from eleven through twenty years

​

 

2,323

​

 

2,547

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3,223

​

 

3,430

Total

​

$

15,015

​

$

16,234

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$

21,718

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$

22,584

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Schedule of Unrealized gains and losses

The unrealized gains and losses on marketable securities at December 31, 2020 and 2019 were as follows:

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​

​

2020

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2019

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Unrealized

    

Unrealized

    

Unrealized

    

Unrealized

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Gains

    

Losses

    

Gains

    

Losses

​

​

(Dollars in thousands)

Municipal bonds

​

$

1,219

​

$

—

​

$

866

​

$

—

​