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REVENUE FROM CONTRACTS WITH CUSTOMERS - Additional Information (Details) - Product Concentration Risk - Sales Revenue, Net | 3 Months Ended | 9 Months Ended
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Sep. 30, 2018 | Sep. 30, 2018
Transportation and logistics services |  |
Disaggregation of Revenue [Line Items] |  |
Percentage of gross revenue attributable to services | 92.00% | 92.00%
Buying, Selling, and Marketing of Produce Items |  |
Disaggregation of Revenue [Line Items] |  |
Percentage of gross revenue attributable to services | 6.00% | 7.00%
Value-added Logistics Services |  |
Disaggregation of Revenue [Line Items] |  |
Percentage of gross revenue attributable to services | 2.00% | 1.00%

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