Related Party Transactions Included in Condensed Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Accounts receivable	$ 1,025	$ 57
Other current assets	1,571	2,291
Total due from Roust	2,596	2,348
Current Liabilities
Trade accounts payable	3,873	1,946
Russian Standard Bank loans	15,946	0
RTL Credit Facility	50,000	0
Short term borrowings	81,463	130,655
Other accrued liabilities	1,204	929
Total due to Roust	91,023	72,875
Senior Notes due March 18, 2013 (New Debt)
Current Liabilities
RTL Credit Facility	70,000
Short term borrowings	$ 20,000	$ 70,000