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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Components of Property and Equipment
Property and equipment consist of the following (in thousands): 
 
Estimated
Useful  Life
(Years)
 
As of
December 31,
 
2015
 
2014
Machinery and equipment
2-5
 
$
49,059

 
$
35,690

Lab equipment
2-3
 
1,615

 
1,585

Computers
3
 
2,067

 
4,511

Software
3
 
2,566

 
5,618

Office furniture and fixtures
3-5
 
1,468

 
1,253

Leasehold improvement
*
 
927

 
826

Construction in process
 
12,275

 
10,502

Total property and equipment
 
 
$
69,977

 
$
59,985

Less: accumulated depreciation
 
 
(28,184
)
 
(22,916
)
Total property and equipment
 
 
$
41,793

 
$
37,069

 
 
 
 
 
* Lesser of lease term or useful life of asset
Property and equipment by geographic location consist of the following (in thousands): 
 
As of
December 31,
 
2015
 
2014
Property and equipment:
 
 
 
U.S. property and equipment
$
19,267

 
$
22,814

Non-U.S. property and equipment
50,710

 
37,171

Less: accumulated depreciation
(28,184
)
 
(22,916
)
Total property and equipment
$
41,793

 
$
37,069