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Fair-Value Measurements (Tables)
3 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

    

March 31, 2020

    

Level 1

    

Level 2

    

Level 3

    

Total

(In thousands)

Assets:

Money-market funds classified as non-current restricted investments

$

1,154

$

$

$

1,154

Money-market funds classified as short-term investments

 

46,862

 

 

 

46,862

Total

$

48,016

$

$

$

48,016

    

December 31, 2019

    

Level 1

    

Level 2

    

Level 3

    

Total

(In thousands)

Assets:

  

 

  

 

  

 

  

Money-market funds classified as non-current restricted investments

$

1,154

$

$

$

1,154

Money-market funds classified as short-term investments

 

57,704

 

 

 

57,704

Total

$

58,858

$

$

$

58,858