Acquisition - Additional Information (Detail)	3 Months Ended			3 Months Ended
	Mar. 31, 2013 USD ($)	Aug. 31, 2012 USD ($)	Aug. 31, 2012 EUR (€)	Mar. 31, 2013 Customer relationships
Business Acquisition [Line Items]
Business acquisition, cash paid for acquired entity		$ 157,000,000	€ 125,000,000
Business acquisition, debt assumed		2,100,000
Business acquisition, purchase price allocated to goodwill	25,042,000	25,000,000
Acquired intangible assets , useful life				9 years
Fair value of acquired receivables	106,800,000
Fair value of acquired payables	130,400,000
Pre-tax acquisition-related costs	$ 600,000