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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Additional Information) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Apr. 14, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Common Stock Outstanding [Member] | Dec. 31, 2014 Scenario, Forecast [Member]
Basis of presentation |  |  |  |  |  |  |  |
Average selling price ("ASP") of polysilicon | 21 |  | 18 |  |  | 60 |  | 22
Average production cost of polysilicon |  |  | 11 |  |  |  |  | 11
Operating loss |  |  | $ (200,631,180) | $ (88,517,894) | $ 50,752,147 |  |  |
Cash flow from operations |  |  | (16,525,817) | (10,307,234) | 44,857,910 |  |  |
Working capital |  |  | (207,979,447) |  |  |  |  |
Cash and cash equivalents |  |  | 7,831,084 | 6,679,024 | 92,697,098 | 203,635,798 |  |
Short-term bank borrowings |  |  | 68,821,014 | 51,273,360 |  |  |  |
Proceeds from short-term bank debt |  | 11,200,000 |  |  |  |  |  |
Proceeds from bank acceptance note credit facility |  | 4,800,000 |  |  |  |  |  |
Current portion of long-term debt |  |  | 50,049,843 | 69,006,400 |  |  |  |
Restricted cash |  |  |  |  |  |  |  |
Restricted cash |  |  | 8,826,110 | 10,649,745 |  |  |  |
Inventories |  |  |  |  |  |  |  |
Inventory write-down |  |  | 29,905,734 | 14,821,620 | 14,252,701 |  |  |
Prepaid land use rights |  |  |  |  |  |  |  |
Lease Expenses |  |  | 781,706 | 958,558 | 166,355 |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |  |
Long-lived asset impairment |  |  | 158,424,827 | 42,754,481 | 38,512,376 |  |  |
Impairment charges included in loss from discontinued operations |  |  |  |  | 3,844,799 |  |  |
Revenue recognition |  |  |  |  |  |  |  |
Revenue of other products |  |  | 32,278,700 | 19,862,424 | 36,916,531 |  |  |
Shipping and handling |  |  |  |  |  |  |  |
Shipping and handling costs |  |  | 1,901,384 | 1,033,808 | 1,215,110 |  |  |
Government subsidies |  |  |  |  |  |  |  |
Unrestricted cash government subsidies |  |  | 5,249,788 | 9,250,296 | 11,484,768 |  |  |
Government grants related to assets |  |  | 1,172,160 | 1,383,487 | 25,895,226 |  |  |
Government grants recognized as an offset to depreciation expense |  |  | 1,454,125 | 764,528 | 42,047 |  |  |
Deferred government subsidies |  |  | 26,954,700 | 26,472,135 | 25,853,179 |  |  |
Foreign currency translation |  |  |  |  |  |  |  |
Aggregate amount of cash and cash equivalents and restricted cash denominated in RMB |  |  | 11,436,370 | 11,589,709 |  |  |  |
Noncontrolling interest |  |  |  |  |  |  |  |
Noncontrolling interest |  |  |  | 138,772,130 |  |  |  |
Treasury Stock |  |  |  |  |  |  |  |
Share repurchase program, authorized amount |  |  |  | 5,000,000 |  |  |  |
Number of shares repurchased |  |  |  |  |  |  | 2,836,670 |
Value of shares repurchased |  |  |  | $ 500,724 |  |  | $ 283 |

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