Business Segments - Product line information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue from External Customer [Line Items]
Revenues	$ 875,434	$ 855,656	$ 879,304	$ 862,497	$ 854,402	$ 827,531	$ 860,821	$ 800,050	$ 3,472,891	$ 3,342,804	$ 3,243,987
Sealing systems [Member]
Revenue from External Customer [Line Items]
Revenues									1,816,924	1,783,068	1,692,686
Fuel and brake delivery systems [Member]
Revenue from External Customer [Line Items]
Revenues									725,689	675,493	660,242
Fluid transfer systems [Member]
Revenue from External Customer [Line Items]
Revenues									494,940	458,699	441,532
Anti-vibration systems [Member]
Revenue from External Customer [Line Items]
Revenues									301,199	278,891	273,057
Other products [Member]
Revenue from External Customer [Line Items]
Revenues									$ 134,139	$ 146,653	$ 176,470