Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001699136-22-000069-index-headers.html | 2022-05-04 17:29:27 | |
| 0001699136-22-000069-index.html | 2022-05-04 17:29:27 | |
| 0001699136-22-000069.txt | 2022-05-04 17:29:27 | |
 0001699136-22-000069-xbrl.zip | 26620 | 2022-05-04 17:29:27 |
| FilingSummary.xml | 1648 | 2022-05-04 17:29:27 |
| Financial_Report.xlsx | 5653 | 2022-05-04 17:29:27 |
| MetaLinks.json | 16554 | 2022-05-04 17:29:27 |
| R1.htm | 38695 | 2022-05-04 17:29:27 |
| report.css | 2767 | 2022-05-04 17:29:27 |
| Show.js | 1085 | 2022-05-04 17:29:27 |
 whd-20200429xex99d1g001.jpg | 2805 | 2022-05-04 17:29:27 |
| whd-2022033122xexhibit991.htm | 267890 | 2022-05-04 17:29:27 |
| whd-20220428.htm | 34876 | 2022-05-04 17:29:27 |
| whd-20220428.xsd | 1905 | 2022-05-04 17:29:27 |
| whd-20220428_htm.xml | 10562 | 2022-05-04 17:29:27 |
| whd-20220428_lab.xml | 24137 | 2022-05-04 17:29:27 |
| whd-20220428_pre.xml | 12511 | 2022-05-04 17:29:27 |