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| 0000950170-22-001780-index.html | 2022-02-23 16:11:51 | |
| 0000950170-22-001780.txt | 2022-02-23 16:11:51 | |
 0000950170-22-001780-xbrl.zip | 403545 | 2022-02-23 16:11:51 |
| drq-20211231.htm | 4342407 | 2022-02-23 16:11:51 |
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| report.css | 2768 | 2022-02-23 16:11:51 |
| Show.js | 1086 | 2022-02-23 16:11:51 |