Accrued Product Warranties (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Movement in Standard Product Warranty Accrual [Roll Forward]
Accrued product warranties, beginning of year	$ 16,046	$ 18,686	$ 9,438
Amounts paid for warranty services	(12,317)	(11,849)	(2,029)
Warranty provisions for products sold	10,477	9,519	2,073
Business acquisitions and disposals	839	(20)	8,969
Currency translation adjustments and other	1,107	(290)	235
Accrued product warranties, end of year	16,152	16,046	18,686
Current accrued product warranties, end of year	13,169	13,370	15,711
Long-term accrued product warranties, end of ear	$ 2,983	$ 2,676	$ 2,975
Minimum [Member]
Schedule of Accrued Liabilities [Line Items]
Product warranty term	12
Maximum [Member]
Schedule of Accrued Liabilities [Line Items]
Product warranty term	24