Commitments and Contingencies Warranty Account Activity (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Warranty Activity [Line Items]
Beginning balance	$ 45,457	$ 58,139	$ 54,512	$ 36,548
New product warranties	1,976	1,760	5,881	4,767
Other changes/adjustments to warranties	1,662	2,492	3,697	29,589
Claims activity	(4,485)	(7,396)	(19,488)	(14,062)
Effect of change in exchange rates	176	(251)	184	(2,098)
Ending balance	44,786	54,744	44,786	54,744
Less: current portion of warranty	26,084	40,060	26,084	40,060
Long-term warranty	$ 18,702	$ 14,684	$ 18,702	$ 14,684

WarrantiesActivity [Line Items]

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
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-Subparagraph (SX 210.9-03.15(5))
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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 10
-Section 25
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Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

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Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties.

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Amount of foreign currency translation gain (loss) which decreases (increases) the standard and extended product warranty accrual.

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Amount of increase in the standard product warranty accrual from warranties issued. Excludes extended product warranties.

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