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Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Statement [Abstract]        
Revenue from related parties $ 427,000 $ 4,187,000 $ 1,976,000 $ 6,077,000