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v3.19.1

BORROWINGS (Long-Term Borrowings) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Nov. 01, 2018
Debt Instrument [Line Items] |  |  |  |  |
Long-term bank borrowings | $ 137,383,010 |  |  |  |
Bank of China [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount repaid | 13,700,000 | $ 18,400,000 | $ 13,100,000 |  |
Long-term bank borrowings | 50,900,000 |  |  |  |
Chongqing Rural Commercial Bank [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing amount of credit facility | $ 96,100,000 |  |  |  |
Interest rate spread over rate issued by People's Bank of China | 20.00% |  |  |  |
Fixed interest rate |  | 5.90% | 5.90% | 5.90% |
Long-term bank borrowings | $ 69,100,000 |  |  |  |
Line of Credit Facility, Maximum Amount Outstanding During Period |  |  | $ 54,900,000 | $ 96,100,000 |
Proceeds from Lines of Credit |  | $ 21,900,000 |  |  |
Repayments of Long-term Debt | 7,700,000 |  |  |  |
Chongqing Rural Commercial Bank [Member] | Facility One [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing amount of credit facility | $ 76,800,000 |  |  |  |
Shihezi Rural Cooperative Bank [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing amount of credit facility |  |  |  |  | $ 29,000,000
Fixed interest rate |  |  |  |  | 6.20%
Weighted average interest rate | 6.20% |  |  |  |
Long-term bank borrowings | $ 17,400,000 |  |  |  |
Proceeds from Lines of Credit | 17,400,000 |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | $ 11,600,000 |  |  |  |
Line of Credit [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average interest rate | 5.90% | 5.90% | 5.70% |  |
Long-term bank borrowings | $ 137,383,010 | $ 141,413,200 |  |  |
Line of Credit [Member] | Chongqing Rural Commercial Bank [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term bank borrowings | 119,937,410 | 141,413,200 |  |  |
Line of Credit [Member] | Shihezi Rural Cooperative Bank [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term bank borrowings | $ 17,445,600 | $ 0 |  |  |

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