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Commitments and Contingencies (Details) $ in Thousands	3 Months Ended		175 Months Ended
	Mar. 31, 2016 USD ($) Claim	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($) Claim
Changes in product warranties [Roll forward]
Balance, beginning of period	$ 23,395	$ 19,328
Liabilities accrued for current year sales	22,581	21,036
Settlements of warranty claims	(19,572)	(20,379)
Balance, end of period	$ 26,404	$ 19,985	$ 26,404
Asbestos [Member]
Loss Contingencies [Line Items]
Pending claims, approximate number | Claim	1,620		1,620
Payment for settled claims			$ 19,200
Decrease for low end of range	$ 2,800
Decrease for high end of range	4,300
Range of possible loss, minimum	40,000		40,000
Range of possible loss, maximum	75,500		75,500
Asbestos [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Estimated legal costs	33,300		33,300
Asbestos [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Estimated legal costs	$ 51,100		$ 51,100

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