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Balance Sheet Details (Tables)
12 Months Ended
Dec. 31, 2012
Balance Sheet Details [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories
Inventories are comprised of the following:
 
December 31,
 
2011

2012
Materials
$
27,153


$
31,629

Work-in-process
11,172


15,889

Finished goods
11,176


15,904

Total inventories
$
49,501


$
63,422

Property, Plant and Equipment [Table Text Block]
Property, Plant and Equipment
Property, plant and equipment, net is comprised of the following:
 
December 31,
 
2011

2012
Land and building
$
4,997


$
4,997

Machinery and equipment
17,514


18,826

Furniture and fixtures
3,384


3,381

Computer equipment
6,350


7,789

Leasehold improvements
6,329


6,807

 
38,574


41,800

Accumulated depreciation
(26,044
)

(29,891
)
Total property, plant and equipment, net
$
12,530


$
11,909

Schedule of Other Assets [Table Text Block]
Other assets
Other assets is comprised of the following:

December 31,

2011

2012
Capitalized software
$
562


$
201

Other
5,172


1,893

Total other assets
$
5,734


$
2,094

Other Current liabilities [Table Text Block]
Other current liabilities
Other current liabilities is comprised of the following:

December 31,

2011

2012
Litigation accrual
$
4,293


$
4,293

Other
5,031


4,066

Total other current liabilities
$
9,324


$
8,359

Other Non-current liabilities [Table Text Block]
Other non-current liabilities
Other non-current liabilities is comprised of the following:

December 31,

2011

2012
Unrecognized tax benefits (including interest)
$
6,574


$
7,671

Other
2,178


2,166

Total non-current liabilities
$
8,752


$
9,837