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Other Income and (Expenses), net (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Composition of other income and expenses        
Other Income and Expenses $ 4,301 $ 294,154 $ 24,094 $ 6,621
Total $ 4,301 $ 294,154