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ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables) | 12 Months Ended
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Dec. 31, 2017
ALLOWANCES FOR DOUBTFUL RECEIVABLES [Abstract] |
Schedule of Allowances for Doubtful Accounts | Analysis of allowances for doubtful accounts is as follows:
|  | Year ended December 31, |
|  | 2015 |  | 2016 |  | 2017 |
Beginning of the year |  | $ | 3,189,110 |  | $ | 1,087,465 |  | $ | 10,163 |
Reversal during the year |  |  | (2,026,567) |  |  | (1,053,041) |  |  | (2,750) |
Foreign exchange effect |  |  | (75,078) |  |  | (24,261) |  |  | 580 |
Closing balance |  | $ | 1,087,465 |  | $ | 10,163 |  | $ | 7,993 |

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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