Balance Sheet Details - (Tables)

3 Months Ended

Mar. 31, 2013

Balance Sheet Detail [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories

Inventories are comprised of the following:

	March 31, 2013		December 31, 2012
Materials	$	36,065	$	31,629
Work-in-process	19,836		15,889
Finished goods	14,374		15,904
Total inventories	$	70,275	$	63,422

Property, Plant and Equipment [Table Text Block]

Property, Plant and Equipment

Property, plant and equipment, net is comprised of the following:

	March 31, 2013			December 31, 2012
Land and building	$	4,997		$	4,997
Machinery and equipment	18,687			18,826
Furniture and fixtures	3,734			3,381
Computer equipment	7,948			7,789
Leasehold improvements	8,813			6,807
	44,179			41,800
Accumulated depreciation	(30,801		)	(29,891		)
Total property, plant and equipment, net	$	13,378		$	11,909

Schedule of Other Assets [Table Text Block]

Other assets

Other assets is comprised of the following:

	March 31, 2013		December 31, 2012
Deferred income taxes	$	34,442	$	34,600
Capitalized software	111		201
Other	1,912		1,893
Total other assets	$	36,465	$	36,694

Other Current liabilities [Table Text Block]

Other current liabilities

Other current liabilities is comprised of the following:

	March 31, 2013		December 31, 2012
Litigation accrual	$	4,293	$	4,293
Income tax payable	—		1,823
Deferred revenue	9,814		11,170
Other	4,083		4,066
Total other current liabilities	$	18,190	$	21,352

Other Non-current liabilities [Table Text Block]

Other non-current liabilities

Other non-current liabilities is comprised of the following:

	March 31, 2013		December 31, 2012
Unrecognized tax benefits (including interest)	$	7,968	$	7,671
Other	2,050		2,166
Total other non-current liabilities	$	10,018	$	9,837