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Fair-Value Measurements (Tables)
6 Months Ended
Jun. 30, 2021
Fair-Value Measurements  
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

    

June 30, 2021

    

Level 1

    

Level 2

    

Level 3

    

Total

(In thousands)

Assets:

Money-market funds classified as short-term investments

$

60,956

$

$

$

60,956

Money-market funds classified as non-current restricted investments

 

1,054

 

 

 

1,054

Total

$

62,010

$

$

$

62,010

    

December 31, 2020

    

Level 1

    

Level 2

    

Level 3

    

Total

(In thousands)

Assets:

  

 

  

 

  

 

  

Money-market funds classified as short-term investments

$

124,452

$

$

$

124,452

Money-market funds classified as non-current restricted investments

 

1,055

 

 

 

1,055

Total

$

125,507

$

$

$

125,507