Goodwill and Other Intangible Assets, Net - Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2018	Sep. 28, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Gross balance at beginning of period			$ 367,969
Accumulated impairment			(16,252)
Net balance at beginning of period	$ 351,717
Additions	0
Impairments	0
Foreign currency translation	(4,168)
Net balance at end of period	351,717	$ 347,549	351,717
Distribution
Goodwill [Roll Forward]
Gross balance at beginning of period			149,204
Accumulated impairment			0
Net balance at beginning of period	149,204
Additions	0
Impairments	0
Foreign currency translation	0
Net balance at end of period	149,204	149,204	149,204
Aerospace
Goodwill [Roll Forward]
Gross balance at beginning of period			218,765
Accumulated impairment			(16,252)
Net balance at beginning of period	202,513
Additions	0
Impairments	0
Foreign currency translation	(4,168)
Net balance at end of period	$ 202,513	198,345	$ 202,513
Aerosystems [Member]
Goodwill [Roll Forward]
Net balance at end of period		$ 51,000