Certain Balance Sheet Components Certain Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2013

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net [Table Text Block]

Accounts receivable, net	September 30, 2013		December 31, 2012
	(in thousands)
Trade receivables (net of allowance of $8,227 and $7,372)	$	316,732	$	329,352
Unbilled receivables	32,560		45,974
Total accounts receivable, net	$	349,292	$	375,326

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

Allowance for doubtful account activity	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
	(in thousands)
Beginning balance	$	6,948		$	5,381		$	7,372		$	6,049
Provision (release) of doubtful accounts, net	1,290			(124		)	1,461			(414		)
Accounts written-off	(164		)	(53		)	(467		)	(314		)
Effect of change in exchange rates	153			151			(139		)	34
Ending balance	$	8,227		$	5,355		$	8,227		$	5,355

Inventories [Table Text Block]

Inventories	September 30, 2013		December 31, 2012
	(in thousands)
Materials	$	112,148	$	92,038
Work in process	12,654		12,568
Finished goods	69,900		66,113
Total inventories	$	194,702	$	170,719

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

Property, plant, and equipment, net	September 30, 2013			December 31, 2012
	(in thousands)
Machinery and equipment	$	302,216		$	287,791
Computers and software	102,496			84,980
Buildings, furniture, and improvements	146,704			146,191
Land	25,075			25,318
Construction in progress, including purchased equipment	17,970			26,097
Total cost	594,461			570,377
Accumulated depreciation	(345,389		)	(315,165		)
Property, plant, and equipment, net	$	249,072		$	255,212

Depreciation Expense and Capitalized interest [Table Text Block]

Depreciation expense and capitalized interest	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(in thousands)
Depreciation expense	$	14,330	$	15,656	$	42,370	$	45,989
Capitalized interest	—		—		64		—