Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000067716-26-000045-index-headers.html | 2026-05-07 08:33:38 | |
| 0000067716-26-000045-index.html | 2026-05-07 08:33:38 | |
| 0000067716-26-000045.txt | 2026-05-07 08:33:38 | |
 0000067716-26-000045-xbrl.zip | 27095 | 2026-05-07 08:33:38 |
| a2026q1ex99.htm | 256652 | 2026-05-07 08:33:38 |
| FilingSummary.xml | 1663 | 2026-05-07 08:33:38 |
 header01.jpg | 24712 | 2026-05-07 08:33:38 |
| mdu-20260507.htm | 30261 | 2026-05-07 08:33:38 |
| mdu-20260507.xsd | 2033 | 2026-05-07 08:33:38 |
| mdu-20260507_def.xml | 14731 | 2026-05-07 08:33:38 |
| mdu-20260507_htm.xml | 2824 | 2026-05-07 08:33:38 |
| mdu-20260507_lab.xml | 26114 | 2026-05-07 08:33:38 |
| mdu-20260507_pre.xml | 15396 | 2026-05-07 08:33:38 |
| MetaLinks.json | 20029 | 2026-05-07 08:33:38 |
| R1.htm | 39837 | 2026-05-07 08:33:38 |
| report.css | 2767 | 2026-05-07 08:33:38 |
| Show.js | 1085 | 2026-05-07 08:33:38 |