Summary of Preliminary Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 03, 2014 C2CE	Aug. 21, 2014 Dia-Frag	Jun. 06, 2014 Fandstan	Sep. 24, 2013 Longwood	Jul. 30, 2013 Turbonetics	Jan. 31, 2013 Napier
Business Acquisition [Line Items]
Current assets			$ 9,794	$ 12,502	$ 125,025	$ 17,444	$ 5,532	$ 13,441
Property, plant & equipment			1,860	4,497	61,465	19,363	992	8,837
Goodwill	864,460	786,433	14,981	32,556	49,748	28,272	11,309	67,045
Other intangible assets	182,600		3,804	36,211	51,571	39,440	11,140	40,583
Other assets				65	309	7
Total assets acquired			30,439	85,831	288,118	104,526	28,973	129,906
Total liabilities assumed			(5,323)	(15,190)	(88,714)	(20,663)	(5,790)	(17,565)
Net assets acquired			$ 25,116	$ 70,641	$ 199,404	$ 83,863	$ 23,183	$ 112,341