Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000067716-25-000083-index-headers.html | 2025-08-13 16:49:51 | |
| 0000067716-25-000083-index.html | 2025-08-13 16:49:51 | |
| 0000067716-25-000083.txt | 2025-08-13 16:49:51 | |
 0000067716-25-000083-xbrl.zip | 15796 | 2025-08-13 16:49:51 |
| FilingSummary.xml | 1649 | 2025-08-13 16:49:51 |
 image_0a.jpg | 20242 | 2025-08-13 16:49:51 |
| mdu-20250812.htm | 32926 | 2025-08-13 16:49:51 |
| mdu-20250812.xsd | 2020 | 2025-08-13 16:49:51 |
| mdu-20250812_def.xml | 14719 | 2025-08-13 16:49:51 |
| mdu-20250812_htm.xml | 2824 | 2025-08-13 16:49:51 |
| mdu-20250812_lab.xml | 25858 | 2025-08-13 16:49:51 |
| mdu-20250812_pre.xml | 15384 | 2025-08-13 16:49:51 |
| MetaLinks.json | 19865 | 2025-08-13 16:49:51 |
| newsrelease.htm | 10533 | 2025-08-13 16:49:51 |
| R1.htm | 39833 | 2025-08-13 16:49:51 |
| report.css | 2767 | 2025-08-13 16:49:51 |
| Show.js | 1085 | 2025-08-13 16:49:51 |