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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) | Total | Ordinary shares [Member] | Treasury stock [Member] | Additional paid in capital [Member] | Retained earnings [Member] | Accumulated other comprehensive income [Member] | Noncontrolling interest [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 180,491,946 | $ 10,000 |  | $ 258,583 | $ 51,609,747 | $ 617,298 | $ 127,996,318
Balance, shares at Dec. 31, 2009 |  | 100,000,000 |  |  |  |  |
Net income (loss) | 69,147,733 |  |  |  | 68,571,257 |  | 576,476
Other comprehensive income | 10,028,611 |  |  |  |  | 5,659,570 | 4,369,041
Share-based compensation | 1,614,756 |  |  | 1,614,756 |  |  |
Deemed dividend on Series A convertible redeemable preferred shares | (3,300,000) |  |  |  | (3,300,000) |  |
Conversion of series A convertible redeemable preferred shares into ordinary shares | 58,902,740 | 2,971 |  | 58,899,769 |  |  |
Conversion of series A convertible redeemable preferred shares into ordinary shares, shares |  | 29,714,103 |  |  |  |  |
Issuance of ordinary shares in the initial public offering (net of commission and issuance cost of $7,867,552) | 79,537,048 | 4,600 |  | 79,532,448 |  |  |
Issuance of ordinary shares in the initial public offering (net of commission and issuance cost of $7,867,552), shares |  | 46,000,000 |  |  |  |  |
Balance at Dec. 31, 2010 | 396,422,834 | 17,571 |  | 140,305,556 | 116,881,004 | 6,276,868 | 132,941,835
Balance, shares at Dec. 31, 2010 |  | 175,714,103 |  |  |  |  |
Net income (loss) | 34,914,112 |  |  |  | 33,323,952 |  | 1,590,160
Other comprehensive income | 18,483,256 |  |  |  |  | 12,167,255 | 6,316,001
Share-based compensation | 2,206,025 |  |  | 2,206,025 |  |  |
Balance at Dec. 31, 2011 | 452,026,227 | 17,571 |  | 142,511,581 | 150,204,956 | 18,444,123 | 140,847,996
Balance, shares at Dec. 31, 2011 |  | 175,714,103 |  |  |  |  |
Net income (loss) | (115,637,415) |  |  |  | (111,928,941) |  | (3,708,474)
Other comprehensive income | 3,838,790 |  |  |  |  | 2,206,182 | 1,632,608
Share-based compensation | 2,249,834 |  |  | 2,249,834 |  |  |
Stock Repurchases | (500,724) | (283) | (494,928) | (5,513) |  |  |
Stock Repurchases, shares |  | (2,836,670) |  |  |  |  |
Disposal of Nanjing Daqo New Energy Co., Ltd | (1,099,299) |  |  |  |  | (1,099,299) |
Balance at Dec. 31, 2012 | $ 340,877,413 | $ 17,288 | $ (494,928) | $ 144,755,902 | $ 38,276,015 | $ 19,551,006 | $ 138,772,130
Balance, shares at Dec. 31, 2012 |  | 172,877,433 |  |  |  |  |

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