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Balance Sheet Details (Tables)
 9 Months Ended
Sep. 30, 2012
Balance Sheet Related Disclosures [Abstract]  
Schedule of inventories
 
 
September 30, 2012
 
December 31, 2011
 
 
(Restated)
 
(Restated)
Raw material and purchased parts
 
$
13,553

 
$
9,661

Work-in-process
 
2,508

 
3,942

Finished goods
 
16,331

 
14,133

Consigned finished goods
 
11,410

 
5,498

Total inventories
 
$
43,802

 
$
33,234
Schedule of intangible assets
Intangible assets consisted of the following:
 
 
Gross
Carrying
Value
 
Accumulated
Amortization
 
Foreign
Currency
Adjustment
 
Net
Carrying
Value
As of September 30, 2012
 
 
 
 
 
 
 
 
Patents
 
$
2,476

 
$
(1,852
)
 
$
—

 
$
624

Developed core technology
 
1,100

 
(1,100
)
 
—

 
—

Patent license agreement
 
741

 
(571
)
 
(36
)
 
134

Total intangible assets at September 30, 2012
 
$
4,317

 
$
(3,523
)
 
$
(36
)
 
$
758

 
 
Gross
Carrying
Value
 
Accumulated
Amortization
 
Foreign
Currency
Adjustment
 
Net
Carrying
Value
As of December 31, 2011
 
 
 
 
 
 
 
 
Patents
 
$
2,476

 
$
(1,699
)
 
$
—

 
$
777

Developed core technology
 
1,100

 
(1,050
)
 
29

 
79

Patent license agreement
 
741

 
(468
)
 
(18
)
 
255

Total intangible assets at December 31, 2011
 
$
4,317

 
$
(3,217
)
 
$
11

 
$
1,111
Schedule of change in the carrying amount of goodwill
The change in the carrying amount of goodwill from December 31, 2011 to September 30, 2012 is as follows:
Balance at December 31, 2011
 
$
24,887

Foreign currency translation adjustments
 
(61
)
Balance at September 30, 2012
 
$
24,826
Schedule of accrued warranty
 
 
Nine Months Ended
 
 
September 30,
 
 
2012
 
2011
Beginning balance
 
$
258

 
$
449

Product warranties issued
 
278

 
242

Settlement of warranties
 
(154
)
 
(160
)
Change related to preexisting warranties
 
(138
)
 
(283
)
Foreign currency translation adjustments
 
—

 
13

Ending balance
 
$
244

 
$
261
Schedule of accumulated other comprehensive income
 
 
Foreign
Currency
Translation
Adjustment
 
Defined Benefit
Pension Plan
 
Accumulated
Other
Comprehensive
Income
Balance as of December 31, 2011
 
$
14,580

 
$
(3,950
)
 
$
10,630

Current period change
 
(176
)
 
165

 
(11
)
Balance as of September 30, 2012
 
$
14,404

 
$
(3,785
)
 
$
10,619