Goodwill and Other Intangible Assets - Changes in Goodwill and Other Identifiable Intangible Assets (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Goodwill [Line Items]
Beginning Balance	$ 102,155,000
Goodwill and intangible assets less accumulated amortization	279,775,000	209,548,000	171,532,000	158,825,000
Goodwill and intangible assets acquired	229,575,000	78,210,000
Amortization	(12,991,000)	(6,774,000)	(4,737,000)	(3,644,000)	(2,861,000)
Foreign currency translation	1,480,000	(1,209,000)
Ending Balance	199,799,000	102,155,000
Goodwill and intangible assets less accumulated amortization	497,839,000	279,775,000	209,548,000	171,532,000	158,825,000
Automotive [Member]
Goodwill [Line Items]
Beginning Balance	43,705,000	44,271,000
Additions	114,206,000
Foreign currency translation	638,000	(566,000)
Ending Balance	158,549,000	43,705,000
Industrial [Member]
Goodwill [Line Items]
Beginning Balance	99,011,000	86,810,000
Additions		12,379,000
Foreign currency translation	221,000	(178,000)
Ending Balance	99,232,000	99,011,000
Office Products [Member]
Goodwill [Line Items]
Beginning Balance	10,554,000	10,554,000
Additions
Foreign currency translation
Ending Balance	10,554,000	10,554,000
Electrical/Electronic Materials [Member]
Goodwill [Line Items]
Beginning Balance	24,350,000	8,647,000
Additions	5,355,000	15,703,000
Ending Balance	29,705,000	24,350,000
Other Intangible Assets, Net [Member]
Goodwill [Line Items]
Beginning Balance	102,155,000	59,266,000
Additions	110,014,000	50,128,000
Amortization	(12,991,000)	(6,774,000)
Foreign currency translation	621,000	(465,000)
Ending Balance	$ 199,799,000	$ 102,155,000