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Accrued and Other Current Liabilities (Tables)
 6 Months Ended
Jun. 30, 2019
Payables And Accruals [Abstract]  
Schedule of Accrued and Other Current Liabilities

 

 

December 31,

 

 

June 30,

 

 

2018

 

 

2019

 

 

(In thousands)

 

Employee benefits

$

9,001

 

 

$

6,577

 

Other

 

1,853

 

 

 

2,365

 

 

 

 

 

 

 

 

 

Total

$

10,854

 

 

$

8,942