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SEGMENT INFORMATION (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | $ 352,852,151 |  | $ 229,101,211 |  | $ 182,040,968 |
Total Cost of revenue | 209,379,466 |  | 148,672,693 |  | 144,491,083 |
Gross profit | $ 143,472,685 |  | $ 80,428,518 |  | $ 37,549,885 |
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage | 34.00% |  | 21.00% |  | 51.00% |
Polysilicon [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | $ 323,199,694 |  | $ 196,219,102 |  | $ 149,401,821 |
Wafer [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 58,779,131 |  | 61,570,902 |  | 56,124,511 |
Operating Segments [Member] | Polysilicon [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total Cost of revenue | 181,595,921 |  | 125,320,832 |  | 121,193,840 |
Gross profit | 141,603,773 |  | 70,898,270 |  | 28,207,981 |
Operating Segments [Member] | Wafer [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total Cost of revenue | 55,992,555 |  | 52,413,007 |  | 46,763,308 |
Gross profit | 2,786,576 |  | 9,157,895 |  | 9,361,203 |
Elimination [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | (29,126,674) |  | (28,688,793) |  | (23,485,364) |
Total Cost of revenue | (28,209,010) |  | (29,061,146) |  | (23,466,065) |
Gross profit | (917,664) |  | 372,353 |  | (19,299) |
Customer A [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 43,258,204 |  | 48,739,001 |  | 35,094,472 |
Customer B [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 39,219,089 |  |  | [1] |  | [1]
Customer C [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 39,099,677 |  |  | [1] | 18,125,773 |
Customer D [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  | [1] |  | [1] | 20,465,558 |
Customer E [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue |  | [1] |  | [1] | 19,595,911 |
Revenue - External [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 352,852,151 |  | 229,101,211 |  | 182,040,968 |
Revenue - External [Member] | Polysilicon [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 294,073,020 |  | 167,530,309 |  | 125,916,457 |
Revenue - External [Member] | Wafer [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 58,779,131 |  | 61,570,902 |  | 56,124,511 |
Revenue - External [Member] | Elimination [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 0 |  |  |  |  |
Revenue - Intersegment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 0 |  | 0 |  |  |
Revenue - Intersegment [Member] | Polysilicon [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 29,126,674 |  | 28,688,793 |  | 23,485,364 |
Revenue - Intersegment [Member] | Wafer [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | 0 |  |  |  |  |
Revenue - Intersegment [Member] | Elimination [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenue | $ (29,126,674) |  | $ (28,688,793) |  | $ (23,485,364) |
[1] | Represents less than 10%

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