Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2011

Segment and Geographic Information [Abstract]

Information about the Company's segments

	MVSD		SISD		Reconciling Items			Consolidated
Year Ended December 31, 2011
Product revenue	$	264,956	$	32,354				$	297,310
Service revenue		8,717		15,887					24,604
Depreciation and amortization		8,445		908	$	403			9,756
Goodwill and intangibles		94,322		6,617		-			100,939
Operating income		94,201		10,301		(19,147	)		85,355
Year Ended December 31, 2010
Product revenue	$	234,052	$	29,411				$	263,463
Service revenue		13,362		13,866					27,228
Depreciation and amortization		8,683		757	$	369			9,809
Goodwill and intangibles		98,252		7,082		-			105,334
Operating income		88,342		5,064		(17,693	)		75,713
Year Ended December 31, 2009
Product revenue	$	133,741	$	24,638				$	158,379
Service revenue		5,542		11,806					17,348
Depreciation and amortization		9,843		361	$	376			10,580
Goodwill and intangibles		103,281		7,660		-			110,941
Operating income (loss)		4,226		2,801		(19,695	)		(12,668	)

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	United States		Europe		Japan		Other		Consolidated
Year Ended December 31, 2011
Product revenue	$	98,833	$	100,984	$	45,295	$	52,198	$	297,310
Service revenue		10,965		6,343		4,147		3,149		24,604
Long-lived assets		121,178		10,811		2,773		948		135,710
Year Ended December 31, 2010
Product revenue	$	83,128	$	83,432	$	55,269	$	41,634	$	263,463
Service revenue		12,702		7,611		3,986		2,929		27,228
Long-lived assets		122,765		10,387		2,457		880		136,489
Year Ended December 31, 2009
Product revenue	$	53,803	$	54,559	$	30,674	$	19,343	$	158,379
Service revenue		6,657		5,261		3,513		1,917		17,348
Long-lived assets		127,317		19,617		2,037		268		149,239