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Revenue (Tables) | 6 Months Ended
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Jun. 30, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of revenue | Disaggregation of Revenue The following table presents the Company’s revenues disaggregated by type and percentage of total revenues for the periods indicated.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| Revenue |  | Percentage of Total Revenue |  | Revenue |  | Percentage of Total Revenue |  | Revenue |  | Percentage of Total Revenue |  | Revenue |  | Percentage of Total Revenue
Sand sales revenue | $ | 26,862 |  |  | 39 | % |  | $ | 34,626 |  |  | 64 | % |  | $ | 48,008 |  |  | 40 | % |  | $ | 56,913 |  |  | 58 | %
Reservation revenue | 4,500 |  |  | 7 | % |  | 5,838 |  |  | 11 | % |  | 9,000 |  |  | 8 | % |  | 12,466 |  |  | 13 | %
Shortfall revenue | 16,283 |  |  | 24 | % |  | 668 |  |  | 1 | % |  | 22,039 |  |  | 18 | % |  | 668 |  |  | 1 | %
Logistics revenue | 20,296 |  |  | 30 | % |  | 13,316 |  |  | 24 | % |  | 40,669 |  |  | 34 | % |  | 27,029 |  |  | 28 | %
Total revenues | $ | 67,941 |  |  | 100 | % |  | $ | 54,448 |  |  | 100 | % |  | $ | 119,716 |  |  | 100 | % |  | $ | 97,076 |  |  | 100 | %

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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