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Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]  
Carrying Value and Estimated Fair Value of Financial Instruments

December 31, 2020

December 31, 2021

Carrying

Fair

Carrying

Fair

    

amount

    

value

    

amount

    

value

(In thousands)

Cash and cash equivalents

$

70,637

$

70,637

$

76,579

$

76,579

Accounts receivable, net

 

10,731

 

10,731

 

15,546

 

15,546

Accounts payable

 

2,632

 

2,632

 

3,408

 

3,408