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Consolidated Statements Of Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Income Statement [Abstract]        
Net revenues from related parties $ 8,106 $ 7,901 $ 24,281 $ 23,869
Technical and operating charges from related parties 155 1,292 465 3,893
Selling, general and administrative charges from related parties $ (1,174) $ 3,184 $ 1,930 $ 53,934