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Marketable Securities (Tables)
9 Months Ended
Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of marketable securities

    

    

Amortized

    

Unrealized

    

Market value

    

cost basis

    

loss, net

(In thousands)

December 31, 2022:

 

  

 

  

 

  

Current assets

$

33,147

$

33,164

$

(17)

 

 

 

September 30, 2023:

Current assets

$

46,774

$

46,886

$

(112)