Commitments and Contingencies Warranty Account Activity (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
WarrantiesActivity [Line Items]
Beginning balance	$ 53,605	$ 79,536
New product warranties	5,561	8,735
Other changes/adjustments to warranties	10,343	4,451
Claims activity	(23,593)	(38,979)
Effect of change in exchange rates	(770)	(138)
Ending balance	45,146	53,605
Less: current portion of warranty	21,048	27,115
Long-term warranty	$ 24,098	$ 26,490