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Restructuring (Tables)
 12 Months Ended
Dec. 31, 2018
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserve by Type of Cost
The following is a reconciliation of the beginning and ending balances of our restructuring liability:

 
Severance and Related Benefits
 
Facilities
 
Other
 
Total
Balance at January 1, 2017
$
—

 
$
—

 
$
—

 
$
—

Additions
$
770

 
$
830

 
$
186

 
$
1,786

Accretion of lease obligations
 
 
$
31

 
$
—

 
$
31

Adjustment of lease obligations
 
 
$
(155
)
 
$
—

 
$
(155
)
Write-offs
 
 
$
9

 
$
(95
)
 
$
(86
)
Payments
$
(708
)
 
$
(375
)
 
$
(91
)
 
$
(1,174
)
Balance at December 31, 2017
$
62

 
$
340

 
$
—

 
$
402

Accretion of lease obligations
 
 
$
21

 
$
—

 
$
21

Adjustment of lease obligations
 
 
$
90

 
$
—

 
$
90

Payments
$
(62
)
 
$
(101
)
 
$
—

 
$
(163
)
Balance at December 31, 2018
$
—

 
$
350

 
$
—

 
$
350