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Consolidated Statements Of Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Income Statement [Abstract]        
Net revenues from related parties $ 7,545 $ 8,106 $ 23,813 $ 24,281
Technical and operating charges from related parties 14 155 324 465
Selling, general and administrative expenses from transactions with related party $ 510 $ (1,174) $ 2,732 $ 1,930