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Related Party Transactions - Additional Information (Detail) (USD $) | 3 Months Ended | 6 Months Ended |  |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2011 | Jun. 30, 2011 | Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2012 Erdos Metallurgy Co. | Jun. 30, 2011 Erdos Metallurgy Co. | Jun. 30, 2012 Erdos Metallurgy Co. | Jun. 30, 2011 Erdos Metallurgy Co. | Dec. 31, 2011 Erdos Metallurgy Co. | Jun. 30, 2012 Management | Dec. 31, 2011 Management | Sep. 27, 2011 Sino Way Limited
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Advances from Related Parties |  |  | $ 443,728 | $ 2,981,977 | $ 478,861 |  | $ 478,861 |  | $ 2,941,043 | $ 35,133 | $ 40,934 |
Sales income for non-controlling interest | 72,544 | 11,343,798 |  |  | 280,000 | 200,000 | 380,000 | 11,510,000 |  |  |  |
Interest income for non-controlling interest |  |  |  |  | $ 1,840,000 | $ 1,850,000 | $ 3,700,000 | $ 3,250,000 |  |  |  |
Common Stock directly owned by Sino Way Limited |  |  |  |  |  |  |  |  |  |  |  | 100,000

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