Assets And Liabilities Of Business Held For Sale (Detail)	9 Months Ended
	Sep. 30, 2011 USD ($) Year		Sep. 30, 2011 RUB	Dec. 31, 2010 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Gain (loss) recognized on sale of business	$ 7,400,000		221,600,000
Disposal of Tula's assets, expected term to complete transaction (in years)	1		1
Assets held for sale	$ 676,000	[1]		$ 8,614,000	[1]

[1] Restated