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Balance Sheet Details
 12 Months Ended
Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]  
Balance Sheet Details
Balance Sheet Details
Inventories
Inventories consist of the following:
 
As of December 31,
 
2018
 
2017
 
(In thousands)
Raw materials
$
2,583

 
$
2,976

Work in process
145

 
1,109

Finished goods
4,044

 
1,074

 
$
6,772

 
$
5,159


Property, Plant and Equipment, net
Property, plant and equipment, net is comprised of the following:
 
As of December 31,
 
2018
 
2017
 
(In thousands)
Building
$
40,320

 
$
40,320

Computer software
26,127

 
18,424

Computer equipment
37,223

 
36,607

Furniture and fixtures
16,286

 
16,881

Leasehold improvements
10,824

 
10,110

Machinery
9,097

 
16,936

Construction in progress
429

 
1,831

 
140,306

 
141,109

Less accumulated depreciation and amortization
(83,278
)
 
(86,806
)
 
$
57,028

 
$
54,303


Depreciation expense for the years ended December 31, 2018, 2017 and 2016 was $10.7 million, $13.3 million and $13.0 million, respectively.



Accumulated Other Comprehensive Gain (Loss)
Accumulated other comprehensive gain (loss) is comprised of the following:
 
As of December 31,
 
2018
 
2017
 
(In thousands)
Foreign currency translation adjustments
$
(10,040
)
 
$
(5,593
)
Unrealized gain (loss) on available-for-sale securities, net of tax
(251
)
 
496

Total
$
(10,291
)
 
$
(5,097
)