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Shareholders' Equity - Additional Information (Detail) | 6 Months Ended | 1 Months Ended |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 30, 2012 USD ($) | Jun. 30, 2011 USD ($) | Mar. 29, 2011 Settlement Agreement | Nov. 10, 2010 Settlement Agreement | Oct. 31, 2010 Settlement Agreement USD ($) | Sep. 27, 2010 Settlement Agreement USD ($) | Sep. 27, 2010 Settlement Agreement Maximum | Dec. 31, 2011 Xi'an TCH USD ($) | Nov. 22, 2011 Xi'an TCH USD ($) | Jun. 29, 2010 Xi'an TCH USD ($) | Jun. 29, 2010 Xi'an TCH CNY | Jan. 29, 2010 Xi'an TCH CNY | Dec. 31, 2011 Xi'an TCH USD ($)
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate agreed amount to pay to acquire asset |  |  |  |  |  |  |  |  |  | $ 14,705,900 | 100,000,000 |  |
Aggregate agreed amount to pay to acquire asset, in cash |  |  |  |  |  |  |  |  |  |  | 20,000,000 | 20,000,000 |
Aggregate agreed amount to pay to acquire asset, in shares |  |  |  |  |  |  |  | 11,780,000 |  |  | 80,000,000 | 80,000,000 |
Number of shares approved for issuance to acquire set of biomass systems |  |  |  |  |  |  |  |  | 2,941,176 |  |  |  | 2,941,176
Shares issued for the purchase of assets, price per share |  |  |  |  |  |  |  |  | $ 4 |  |  |  |
Exchange rate between U.S. Dollar and Chinese RMB in connection with stock issuance |  |  |  |  |  |  |  |  | 6.8 | 6.8 | 6.8 |  |
Gain from settlement of debt in shares |  |  |  |  |  |  |  | 8,250,000 |  |  |  |  | 8,300,000
Fair value of shares |  |  |  |  |  |  |  | 3,529,411 |  |  |  |  |
Shares issued to acquire asset |  |  |  |  |  |  |  |  | 2,941,176 |  |  |  |
Common stock issuable (in shares) |  |  |  |  |  | 170,000 | 520,000 |  |  |  |  |  |
Common stock issuable, price per share |  |  |  |  |  | $ 1.23 |  |  |  |  |  |  |
Common stock issued (in shares) |  |  |  |  |  | 350,000 |  |  |  |  |  |  |
Consulting and investor relation's services starting date |  |  |  |  |  | Nov. 01, 2010 |  |  |  |  |  |  |
Consulting and investor relation's services ending date |  |  |  |  |  | Feb. 28, 2011 |  |  |  |  |  |  |
Proceed from issuance of shares |  |  |  |  | 430,500 |  |  |  |  |  |  |  |
Stock compensation expense | $ 112,814 | $ 1,445,327 |  |  | $ 602,000 |  |  |  |  |  |  |  |
Legal matter dismissal date |  |  |  | Nov. 10, 2010 |  |  |  |  |  |  |  |  |
Number of shares, which had been issued and delivered to an escrow agent, returned and canceled |  |  | 150,000 |  |  |  |  |  |  |  |  |  |

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