Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001699136-21-000149-index-headers.html | 2021-07-28 17:28:49 | |
| 0001699136-21-000149-index.html | 2021-07-28 17:28:49 | |
| 0001699136-21-000149.txt | 2021-07-28 17:28:49 | |
 0001699136-21-000149-xbrl.zip | 27555 | 2021-07-28 17:28:49 |
| FilingSummary.xml | 1637 | 2021-07-28 17:28:49 |
| Financial_Report.xlsx | 5654 | 2021-07-28 17:28:49 |
| MetaLinks.json | 16719 | 2021-07-28 17:28:49 |
| R1.htm | 38563 | 2021-07-28 17:28:49 |
| report.css | 2767 | 2021-07-28 17:28:49 |
| Show.js | 1085 | 2021-07-28 17:28:49 |
 whd-20200429xex99d1g001.jpg | 2805 | 2021-07-28 17:28:49 |
| whd-2021063021xexhibit991.htm | 292694 | 2021-07-28 17:28:49 |
| whd-20210728.htm | 32777 | 2021-07-28 17:28:49 |
| whd-20210728.xsd | 1905 | 2021-07-28 17:28:49 |
| whd-20210728_htm.xml | 10522 | 2021-07-28 17:28:49 |
| whd-20210728_lab.xml | 24137 | 2021-07-28 17:28:49 |
| whd-20210728_pre.xml | 12511 | 2021-07-28 17:28:49 |