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Consolidated Statements Of Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Income Statement [Abstract]    
Net revenues from related parties $ 8,141 $ 8,073
Technical and operating charges from related parties 155 0
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party $ 794 $ 1,996