Commitments and Contingencies Warranty Account Activity (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Beginning balance	$ 39,810	$ 45,457	$ 43,302	$ 54,512
New product warranties	2,708	1,976	6,637	5,881
Other changes/adjustments to warranties	(4,346)	1,662	(2,445)	3,697
Claims activity	(3,773)	(4,485)	(14,372)	(19,488)
Effect of change in exchange rates	523	176	1,800	184
Ending balance	34,922	44,786	34,922	44,786
Less: current portion of warranty	21,697	26,084	21,697	26,084
Long-term warranty	$ 13,225	$ 18,702	$ 13,225	$ 18,702

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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.

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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).

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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.

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

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