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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Additional Information) (Details) - USD ($) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 02, 2018 | Jan. 02, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Oct. 31, 2017 | Feb. 17, 2016
Restricted cash |  |  |  |  |  |  |
Restricted cash |  |  | $ 28,609,307 | $ 9,910,957 |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down |  |  | 0 | 0 | $ 0 |  |
Property, Plant and Equipment |  |  |  |  |  |  |
Interest expense capitalized |  |  | 1,203,547 | 47,507 | 1,757,547 |  |
Prepaid land use rights |  |  |  |  |  |  |
Lease Expenses |  |  | 544,267 | 531,903 | 517,448 |  |
Impairment of long-lived assets |  |  |  |  |  |  |
Long-lived asset impairment |  |  | 11,482,905 | 2,987,668 | 198,689 |  |
Revenue recognition |  |  |  |  |  |  |
Accounts Receivable, Net, Current |  |  | 1,180,598 | 700,558 |  |  |
Government subsidies |  |  |  |  |  |  |
Unrestricted cash government subsidies |  |  | 13,136,922 | 3,704,144 | 1,675,016 |  |
Foreign currency translation |  |  |  |  |  |  |
Aggregate amount of cash and cash equivalents and restricted cash denominated in RMB |  |  | 81,476,636 | 66,433,887 |  |  |
Noncontrolling interest |  |  |  |  |  |  |
Noncontrolling interest |  |  | 0 | 2,792,480 |  |  |
Investment accounted for under cost-method |  |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 13,788,049 | 4,200,273 | 2,702,089 |  |
Operating Leases, Future Minimum Payments Due |  |  | 11,729 |  |  |  |
Contract with Customer, Liability |  |  | 17,482,940 | 16,377,524 |  |  |
Contract with Customer, Liability, Revenue Recognized | $ 16,400,000 | $ 7,200,000 |  |  |  |  |
Customer One [Member] |  |  |  |  |  |  |
Revenue recognition |  |  |  |  |  |  |
Accounts Receivable, Net, Current |  |  | 1,087,719 | 682,264 |  |  |
Discontinued Operations [Member] |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down |  |  | 851,008 |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |
Long-lived asset impairment |  |  | 18,769,938 | 2,987,668 | 198,689 |  |
Discontinued Operations [Member] | Solar wafer manufacturing operations [Member] |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |
Long-lived asset impairment |  |  | 7,287,033 |  |  |  |
Shipping and Handling [Member] |  |  |  |  |  |  |
Shipping and handling |  |  |  |  |  |  |
Cost of Goods and Services Sold |  |  | $ 4,474,956 | $ 4,099,716 | $ 2,873,147 |  |
Syed Fire Safety Service Co [Member] |  |  |  |  |  |  |
Investment accounted for under cost-method |  |  |  |  |  |  |
Cost Method Investment, Ownership Percentage |  |  |  |  |  |  | 15.29%
Cost Method Investments |  |  |  |  |  | $ 63,793 | $ 581,581

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