Certain Balance Sheet Components Certain Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2012

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net [Table Text Block]

Accounts receivable, net	June 30, 2012		December 31, 2011
	(in thousands)
Trade receivables (net of allowance of $5,381and $6,049)	$	348,106	$	328,845
Unbilled receivables	45,959		42,796
Total accounts receivable, net	$	394,065	$	371,641

Summary of Allowance for Doubtful Accounts [Table Text Block]

Allowance for doubtful account activity	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(in thousands)
Beginning balance	$	5,983		$	9,030		$	6,049		$	9,045
Provision (release) of doubtful accounts, net	(230		)	298			(290		)	(48		)
Accounts written-off	(22		)	(505		)	(261		)	(552		)
Effects of change in exchange rates	(350		)	157			(117		)	535
Ending balance	$	5,381		$	8,980		$	5,381		$	8,980

Inventories [Table Text Block]

Inventories	June 30, 2012		December 31, 2011
	(in thousands)
Materials	$	97,000	$	112,470
Work in process	14,232		16,306
Finished goods	85,415		67,061
Total inventories	$	196,647	$	195,837

Property, Plant, and Equipment, Net [Table Text Block]

Property, plant, and equipment, net	June 30, 2012			December 31, 2011
	(in thousands)
Machinery and equipment	$	269,433		$	269,611
Computers and purchased software	79,471			74,885
Buildings, furniture, and improvements	141,699			140,064
Land	27,183			26,126
Construction in progress, including purchased equipment	19,212			20,687
Total cost	536,998			531,373
Accumulated depreciation	(284,913		)	(268,703		)
Property, plant, and equipment, net	$	252,085		$	262,670

Depreciation Expense [Table Text Block]

Depreciation expense	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(in thousands)
Depreciation expense	$	15,019	$	16,571	$	30,333	$	32,505