Commitments and Contingencies - Roll Forward Of The Warranty Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance January 1	$ 7,936	$ 7,196	$ 4,888
Provision for warranties	1,828	4,788	6,220
Claim settlements	(3,539)	(3,864)	(3,823)
Other adjustments, including acquisitions, divestitures and currency translation	(597)	(184)	(89)
Ending balance December 31	$ 5,628	$ 7,936	$ 7,196