Goodwill and Other Intangible Assets Other Intangible Assets, Changes in Net Carrying Amount (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014
Other Intangible Assets, Gross Amount [Roll Forward]
Other intangible assets, beginning of period			$ 116,279
Finite-lived Intangible Assets Acquired			11,100
Foreign currency translation effect on balances			(5,553)
Other intangible assets, end of period	121,826		121,826
Other Intangible Assets, Accumulated Amortization [Roll Forward]
Other intangible assets, beginning of period			(13,268)
Amortization expense	(3,029)	(2,727)	(8,737)
Foreign currency translation effect on balances			1,120
Other intangible assets, end of period	$ (20,885)		$ (20,885)