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Long-Term Investments (Details) (USD $)
6 Months Ended
Jun. 30, 2012
Long-Term Investments (Additional Textual) [Abstract]  
Eligibility to receive a royalty fee 1.00%
Carrying value of investment $ 0
Maximum [Member]
 
Long-Term Investments (Textual) [Abstract]  
Ownership percentage under Cost Method for Investments 3.00%