Balance Sheet Details Balance Sheet Details (Tables)

3 Months Ended

Mar. 31, 2012

Inventory [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories

Inventories are comprised of the following:

	March 31, 2012		December 31, 2011
Materials	$	29,921	$	27,153
Work-in-process	13,277		11,172
Finished goods	9,956		11,176
Total inventories	$	53,154	$	49,501

The Company has established reserves of $7,902 and $7,927 as of March 31, 2012 and December 31, 2011, respectively, for slow moving and obsolete inventory, which are included in the amounts above.

Schedule of property, plant and equipment [Table Text Block]

Property, Plant and Equipment

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

	March 31, 2012			December 31, 2011
Land and building	$	4,997		$	4,997
Machinery and equipment	16,897			17,514
Furniture and fixtures	3,381			3,384
Computer equipment	6,502			6,350
Leasehold improvements	6,306			6,329
	38,083			38,574
Accumulated depreciation	(27,006		)	(26,044		)
Total property, plant and equipment, net	$	11,077		$	12,530

Schedule of Other Assets, Noncurrent [Table Text Block]

Other assets

Other assets is comprised of the following:

	March 31, 2012		December 31, 2011
Deferred income taxes	$	12,226	$	12,240
Capitalized software	472		562
Other	5,282		5,172
Total other assets	$	17,980	$	17,974

Schedule of other current liabilities [Table Text Block]

Other current liabilities

Other current liabilities is comprised of the following:

	March 31, 2012		December 31, 2011
Litigation accrual	$	4,293	$	4,293
Deferred revenue	7,367		7,332
Other	3,483		5,031
Total other current liabilities	$	15,143	$	16,656

Schedule of other non-current liabilities [Table Text Block]

Other non-current liabilities

Other non-current liabilities is comprised of the following:

	March 31, 2012		December 31, 2011
Unrecognized tax benefits (including interest)	$	6,592	$	6,574
Other	2,101		2,178
Total other non-current liabilities	$	8,693	$	8,752