Goodwill and Other Intangible Assets - Other Intangible Assets, Changes in Net Carrying Amount (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Other Intangible Assets, Gross Amount [Roll Forward]
Other intangible assets, beginning	$ 54,907
Foreign currency translation effect on balances	(362)
Other intangible assets, ending	54,545
Other Intangible Assets, Accumulated Amortization [Roll Forward]
Other intangible assets, beginning	(4,015)
Amortization expense	(1,078)
Foreign currency translation effect on balances	75
Other intangible assets, ending	$ (5,018)