Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-23-019828-index-headers.html | 2023-05-09 17:01:44 | |
| 0000950170-23-019828-index.html | 2023-05-09 17:01:44 | |
| 0000950170-23-019828.txt | 2023-05-09 17:01:44 | |
 0000950170-23-019828-xbrl.zip | 217176 | 2023-05-09 17:01:44 |
| drtt-20230331.htm | 2563606 | 2023-05-09 17:01:44 |
| drtt-20230331.xsd | 59837 | 2023-05-09 17:01:44 |
| drtt-20230331_cal.xml | 44787 | 2023-05-09 17:01:44 |
| drtt-20230331_def.xml | 203420 | 2023-05-09 17:01:44 |
| drtt-20230331_htm.xml | 1943805 | 2023-05-09 17:01:44 |
| drtt-20230331_lab.xml | 447498 | 2023-05-09 17:01:44 |
| drtt-20230331_pre.xml | 339882 | 2023-05-09 17:01:44 |
| drtt-ex31_1.htm | 21588 | 2023-05-09 17:01:44 |
| drtt-ex31_2.htm | 21766 | 2023-05-09 17:01:44 |
| drtt-ex32_1.htm | 12151 | 2023-05-09 17:01:44 |
| drtt-ex32_2.htm | 12160 | 2023-05-09 17:01:44 |
| FilingSummary.xml | 41851 | 2023-05-09 17:01:44 |
| Financial_Report.xlsx | 88829 | 2023-05-09 17:01:44 |
| MetaLinks.json | 728241 | 2023-05-09 17:01:44 |
| R1.htm | 53251 | 2023-05-09 17:01:44 |
| R10.htm | 8123 | 2023-05-09 17:01:44 |
| R11.htm | 13178 | 2023-05-09 17:01:44 |
| R12.htm | 12416 | 2023-05-09 17:01:44 |
| R13.htm | 11760 | 2023-05-09 17:01:44 |
| R14.htm | 72061 | 2023-05-09 17:01:44 |
| R15.htm | 17617 | 2023-05-09 17:01:44 |
| R16.htm | 40576 | 2023-05-09 17:01:44 |
| R17.htm | 58003 | 2023-05-09 17:01:44 |
| R18.htm | 190697 | 2023-05-09 17:01:44 |
| R19.htm | 285443 | 2023-05-09 17:01:44 |
| R2.htm | 94640 | 2023-05-09 17:01:44 |
| R20.htm | 128675 | 2023-05-09 17:01:44 |
| R21.htm | 47631 | 2023-05-09 17:01:44 |
| R22.htm | 8938 | 2023-05-09 17:01:44 |
| R23.htm | 7717 | 2023-05-09 17:01:44 |
| R24.htm | 13656 | 2023-05-09 17:01:44 |
| R25.htm | 9910 | 2023-05-09 17:01:44 |
| R26.htm | 13530 | 2023-05-09 17:01:44 |
| R27.htm | 62263 | 2023-05-09 17:01:44 |
| R28.htm | 34713 | 2023-05-09 17:01:44 |
| R29.htm | 57096 | 2023-05-09 17:01:44 |
| R3.htm | 24178 | 2023-05-09 17:01:44 |
| R30.htm | 159780 | 2023-05-09 17:01:44 |
| R31.htm | 267300 | 2023-05-09 17:01:44 |
| R32.htm | 104579 | 2023-05-09 17:01:44 |
| R33.htm | 43228 | 2023-05-09 17:01:44 |
| R34.htm | 30396 | 2023-05-09 17:01:44 |
| R35.htm | 7334 | 2023-05-09 17:01:44 |
| R36.htm | 10186 | 2023-05-09 17:01:44 |
| R37.htm | 24449 | 2023-05-09 17:01:44 |
| R38.htm | 19060 | 2023-05-09 17:01:44 |
| R39.htm | 30423 | 2023-05-09 17:01:44 |
| R4.htm | 102570 | 2023-05-09 17:01:44 |
| R40.htm | 22737 | 2023-05-09 17:01:44 |
| R41.htm | 14769 | 2023-05-09 17:01:44 |
| R42.htm | 18084 | 2023-05-09 17:01:44 |
| R43.htm | 8692 | 2023-05-09 17:01:44 |
| R44.htm | 33198 | 2023-05-09 17:01:44 |
| R45.htm | 93485 | 2023-05-09 17:01:44 |
| R46.htm | 47598 | 2023-05-09 17:01:44 |
| R47.htm | 9034 | 2023-05-09 17:01:44 |
| R48.htm | 31121 | 2023-05-09 17:01:44 |
| R49.htm | 17204 | 2023-05-09 17:01:44 |
| R5.htm | 8896 | 2023-05-09 17:01:44 |
| R50.htm | 14038 | 2023-05-09 17:01:44 |
| R51.htm | 20357 | 2023-05-09 17:01:44 |
| R52.htm | 21206 | 2023-05-09 17:01:44 |
| R53.htm | 15670 | 2023-05-09 17:01:44 |
| R54.htm | 8745 | 2023-05-09 17:01:44 |
| R55.htm | 4585 | 2023-05-09 17:01:44 |
| R56.htm | 25138 | 2023-05-09 17:01:44 |
| R57.htm | 8410 | 2023-05-09 17:01:44 |
| R58.htm | 15687 | 2023-05-09 17:01:44 |
| R59.htm | 8723 | 2023-05-09 17:01:44 |
| R6.htm | 20544 | 2023-05-09 17:01:44 |
| R60.htm | 6375 | 2023-05-09 17:01:44 |
| R61.htm | 20345 | 2023-05-09 17:01:44 |
| R62.htm | 7851 | 2023-05-09 17:01:44 |
| R63.htm | 11102 | 2023-05-09 17:01:44 |
| R7.htm | 44069 | 2023-05-09 17:01:44 |
| R8.htm | 79684 | 2023-05-09 17:01:44 |
| R9.htm | 11472 | 2023-05-09 17:01:44 |
| report.css | 2767 | 2023-05-09 17:01:44 |
| Show.js | 1085 | 2023-05-09 17:01:44 |