Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000067716-25-000073-index.html | 2025-08-07 08:31:58 | |
| 0000067716-25-000073.txt | 2025-08-07 08:31:58 | |
 0000067716-25-000073-xbrl.zip | 31659 | 2025-08-07 08:31:58 |
| a2025q2ex99.htm | 356751 | 2025-08-07 08:31:58 |
| FilingSummary.xml | 1663 | 2025-08-07 08:31:58 |
 header01a.jpg | 24712 | 2025-08-07 08:31:58 |
| mdu-20250807.htm | 30428 | 2025-08-07 08:31:58 |
| mdu-20250807.xsd | 2033 | 2025-08-07 08:31:58 |
| mdu-20250807_def.xml | 14731 | 2025-08-07 08:31:58 |
| mdu-20250807_htm.xml | 2824 | 2025-08-07 08:31:58 |
| mdu-20250807_lab.xml | 26114 | 2025-08-07 08:31:58 |
| mdu-20250807_pre.xml | 15396 | 2025-08-07 08:31:58 |
| MetaLinks.json | 20029 | 2025-08-07 08:31:58 |
| R1.htm | 39839 | 2025-08-07 08:31:58 |
| report.css | 2767 | 2025-08-07 08:31:58 |
| Show.js | 1085 | 2025-08-07 08:31:58 |