Certain Balance Sheet Components Certain Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2012

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net [Table Text Block]

Accounts receivable, net	December 31, 2012		December 31, 2011
	(in thousands)
Trade receivables (net of allowance of $7,372and $6,049)	$	329,352	$	328,845
Unbilled receivables	45,974		42,796
Total accounts receivable, net	$	375,326	$	371,641

Allowance for Credit Losses on Financing Receivables [Table Text Block]

Allowance for doubtful account activity	Year Ended December 31,
	2012			2011
	(in thousands)
Beginning balance	$	6,049		$	9,045
Provision (release) of doubtful accounts, net	1,851			(71		)
Accounts written-off	(595		)	(2,599		)
Effects of change in exchange rates	67			(326		)
Ending balance	$	7,372		$	6,049

Inventories [Table Text Block]

Inventories	December 31, 2012		December 31, 2011
	(in thousands)
Materials	$	92,038	$	112,470
Work in process	12,568		16,306
Finished goods	66,113		67,061
Total inventories	$	170,719	$	195,837

Property, Plant, and Equipment [Table Text Block]

Property, plant, and equipment, net	December 31, 2012			December 31, 2011
	(in thousands)
Machinery and equipment	$	287,791		$	269,611
Computers and software	84,980			74,885
Buildings, furniture, and improvements	146,191			140,064
Land	25,318			26,126
Construction in progress, including purchased equipment	26,097			20,687
Total cost	570,377			531,373
Accumulated depreciation	(315,165		)	(268,703		)
Property, plant, and equipment, net	$	255,212		$	262,670

Depreciation Expense [Table Text Block]

Depreciation expense	Year Ended December 31,
	2012		2011		2010
	(in thousands)
Depreciation expense	$	61,661	$	66,072	$	62,154