Disclosure - Schedule II Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 14,905	$ 8,820		$ 12,235
Additions - (credited) to costs and expenses	2,409	469		(233)
Additions - charged to other accounts	115	7,930	[1]	111
Write-offs net of recoveries	(3,798)	(1,373)		(2,611)
Translation adjustment	16	(941)		(682)
Balance at end of period	13,647	14,905		8,820
Inventory valuation reserves
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	35,104	35,469		31,932
Additions - (credited) to costs and expenses	2,500	3,325		6,590
Additions - charged to other accounts	(78)	697	[2]	760
Write-offs net of recoveries	(4,673)	(3,924)		(3,652)
Translation adjustment	(292)	(463)		(161)
Balance at end of period	32,561	35,104		35,469
Deferred tax asset valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	71,758	93,054		51,809
Additions - (credited) to costs and expenses	107,995	(22,400)		47,304
Additions - charged to other accounts	0	2,174	[3]	0
Write-offs net of recoveries	0	0		0
Translation adjustment	(54)	(1,070)		(6,059)
Balance at end of period	$ 179,699	$ 71,758		$ 93,054

[1] Amount includes $7.8 million allowance for Astra Tech opening balance at August 31, 2011.

[2] Amount includes $1.1 million reserve for Astra Tech opening balance at August 31, 2011.

[3] Amount related to opening balance sheet valuation allowance for Astra Tech at August 31, 2011.