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Restructuring and Other Charges (Tables)
 12 Months Ended
Dec. 31, 2018
Restructuring Charges [Abstract]  
Restructuring and other charges
The following table provides a summary of accrued restructuring and other charges activity for the years ended December 31, 2018, 2017 and 2016:  
 
Employee termination charges
 
Lease contract termination and other charges
 
Total
 
(In thousands)
Balance as of December 31, 2015
$
13

 
$
1,253

 
$
1,266

Additions (1)
3,086

 
629

 
3,715

Cash payments
(2,902
)
 
(480
)
 
(3,382
)
Adjustments
(191
)
 
—

 
(191
)
Balance as of December 31, 2016
6

 
1,402

 
1,408

Additions
—

 
97

 
97

Cash payments
—

 
(370
)
 
(370
)
Balance as of December 31, 2017
6

 
1,129

 
1,135

Additions
1,789

 
464

 
2,253

Cash payments
(1,010
)
 
(1,403
)
 
(2,413
)
Adjustments
(10
)
 
(45
)
 
(55
)
Balance as of December 31, 2018
$
775

 
$
145

 
$
920

_________________________
(1) 
Total restructuring and other charges recognized in the Company's consolidated statements of operations for the year ended December 31, 2016 included non-cash charges and adjustments, net of $0.3 million. This amount has been excluded from the table above.