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Fair-Value Measurements (Tables)
9 Months Ended
Sep. 30, 2019
Fair Value Disclosures [Abstract]  
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

    

September 30, 2019

    

Level 1

    

Level 2

    

Level 3

    

Total

(In thousands)

Assets:

Money-market funds classified as non-current restricted cash and investments

$

1,154

$

$

$

1,154

Money-market funds classified as short-term investments

 

18,481

 

 

 

18,481

Total

$

19,635

$

$

$

19,635

    

December 31, 2018

    

Level 1

    

Level 2

    

Level 3

    

Total

(In thousands)

Assets:

  

 

  

 

  

 

  

Money-market funds classified as non-current restricted cash and investments

$

1,154

$

$

$

1,154

Money-market funds classified as short-term investments

 

54,637

 

 

 

54,637

Total

$

55,791

$

$

$

55,791