Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001699136-21-000108-index-headers.html | 2021-05-05 17:01:12 | |
| 0001699136-21-000108-index.html | 2021-05-05 17:01:12 | |
| 0001699136-21-000108.txt | 2021-05-05 17:01:12 | |
 0001699136-21-000108-xbrl.zip | 26217 | 2021-05-05 17:01:12 |
| FilingSummary.xml | 1718 | 2021-05-05 17:01:12 |
| Financial_Report.xlsx | 5658 | 2021-05-05 17:01:12 |
| MetaLinks.json | 17293 | 2021-05-05 17:01:12 |
| R1.htm | 38602 | 2021-05-05 17:01:12 |
| report.css | 2767 | 2021-05-05 17:01:12 |
| Show.js | 1085 | 2021-05-05 17:01:12 |
 whd-20200429xex99d1g0011a.jpg | 2805 | 2021-05-05 17:01:12 |
| whd-2021033121xexhibit991.htm | 242727 | 2021-05-05 17:01:12 |
| whd-20210505.htm | 32775 | 2021-05-05 17:01:12 |
| whd-20210505.xsd | 2424 | 2021-05-05 17:01:12 |
| whd-20210505_cal.xml | 713 | 2021-05-05 17:01:12 |
| whd-20210505_def.xml | 1646 | 2021-05-05 17:01:12 |
| whd-20210505_htm.xml | 10528 | 2021-05-05 17:01:12 |
| whd-20210505_lab.xml | 24275 | 2021-05-05 17:01:12 |
| whd-20210505_pre.xml | 12649 | 2021-05-05 17:01:12 |