Quarterly report pursuant to Section 13 or 15(d)

VARIABLE INTEREST ENTITY - Summary of GEM's operations (Unaudited) (Details)

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VARIABLE INTEREST ENTITY - Summary of GEM's operations (Unaudited) (Details) (GEM, USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
GEM
   
Variable Interest Entity [Line Items]    
Revenues    $ 5,340
Net income    $ 4,362