Commitments and Contingencies - Asbestos Claimant and Settlement (Details) - Asbestos [Member]	12 Months Ended
	Dec. 31, 2016 USD ($) claimants	Dec. 31, 2015 USD ($) claimants	Dec. 31, 2014 USD ($) claimants
Loss Contingencies [Line Items]
Number of pending claims at the beginning of period	6,242	7,992	7,975
Number of pending claims filed during period	140	266	210
Number of pending claims dismissed during period	1,009	1,990	155
Number of pending claims settled during period	34	26	38
Average settlement amount per claim during period | $	$ 15,624	$ 16,963	$ 18,734
Total defense costs during period | $	$ 2,920,000	$ 3,160,000	$ 2,800,000