Certain Balance Sheet Components Certain Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2011

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net [Table Text Block]

Accounts receivable, net	September 30, 2011		December 31, 2010
	(in thousands)
Trade receivables (net of allowance of $7,452 and $9,045)	$	340,641	$	328,811
Unbilled receivables	36,466		42,851
Total accounts receivable, net	$	377,107	$	371,662

Summary of Allowance for Doubtful Accounts [Table Text Block]

Allowance for doubtful account activity	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
	(in thousands)
Beginning balance	$	8,980		$	6,298		$	9,045		$	6,339
Provision (release) of doubtful accounts, net	175			(904		)	128			(242		)
Accounts written-off	(1,127		)	(21		)	(1,680		)	(194		)
Effects of change in exchange rates	(576		)	393			(41		)	(137		)
Ending balance	$	7,452		$	5,766		$	7,452		$	5,766

Inventories [Table Text Block]

Inventories	September 30, 2011		December 31, 2010
	(in thousands)
Materials	$	132,309	$	106,021
Work in process	17,209		18,389
Finished goods	91,047		83,747
Total inventories	$	240,565	$	208,157

Property, Plant, and Equipment [Table Text Block]

Property, plant, and equipment, net	September 30, 2011			December 31, 2010
	(in thousands)
Machinery and equipment	$	281,205		$	265,113
Computers and purchased software	75,657			63,077
Buildings, furniture, and improvements	146,841			146,661
Land	32,402			35,968
Construction in progress, including purchased equipment	20,104			20,531
Total cost	556,209			531,350
Accumulated depreciation	(268,644		)	(232,108		)
Property, plant, and equipment, net	$	287,565		$	299,242

Depreciation Expense [Table Text Block]

Depreciation expense	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(in thousands)
Depreciation expense	$	16,607	$	15,231	$	49,112	$	45,725