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| 0001680247-18-000021-index.html | 2018-03-27 17:26:52 | |
| 0001680247-18-000021.txt | 2018-03-27 17:26:52 | |
 0001680247-18-000021-xbrl.zip | 255807 | 2018-03-27 17:26:52 |
| a10-k2017.htm | 1926988 | 2018-03-27 17:26:52 |
 chart-a8dc0a8c882d7dfd865.jpg | 74427 | 2018-03-27 17:26:52 |
| exhibit21.htm | 3624 | 2018-03-27 17:26:52 |
| exhibit23.htm | 2501 | 2018-03-27 17:26:52 |
| exhibit311.htm | 16969 | 2018-03-27 17:26:52 |
| exhibit312.htm | 16953 | 2018-03-27 17:26:52 |
| exhibit321.htm | 4991 | 2018-03-27 17:26:52 |
| exhibit322.htm | 5040 | 2018-03-27 17:26:52 |
| FilingSummary.xml | 44879 | 2018-03-27 17:26:52 |
| Financial_Report.xlsx | 100421 | 2018-03-27 17:26:52 |
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| pump-20171231.xsd | 60272 | 2018-03-27 17:26:52 |
| pump-20171231_cal.xml | 103610 | 2018-03-27 17:26:52 |
| pump-20171231_def.xml | 335733 | 2018-03-27 17:26:52 |
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| report.css | 2767 | 2018-03-27 17:26:52 |
| Show.js | 1410 | 2018-03-27 17:26:52 |