Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000067716-23-000077-index-headers.html | 2023-06-06 18:07:43 | |
| 0000067716-23-000077-index.html | 2023-06-06 18:07:43 | |
| 0000067716-23-000077.txt | 2023-06-06 18:07:43 | |
 0000067716-23-000077-xbrl.zip | 34602 | 2023-06-06 18:07:43 |
| a2023ex99-mdurdispositionp.htm | 384287 | 2023-06-06 18:07:43 |
| FilingSummary.xml | 1696 | 2023-06-06 18:07:43 |
| Financial_Report.xlsx | 5754 | 2023-06-06 18:07:43 |
| mdu-20230530.htm | 39927 | 2023-06-06 18:07:43 |
| mdu-20230530.xsd | 2152 | 2023-06-06 18:07:43 |
| mdu-20230530_def.xml | 15256 | 2023-06-06 18:07:43 |
| mdu-20230530_htm.xml | 11793 | 2023-06-06 18:07:43 |
| mdu-20230530_lab.xml | 29813 | 2023-06-06 18:07:43 |
| mdu-20230530_pre.xml | 15932 | 2023-06-06 18:07:43 |
| MetaLinks.json | 20633 | 2023-06-06 18:07:43 |
| R1.htm | 41368 | 2023-06-06 18:07:43 |
| report.css | 2767 | 2023-06-06 18:07:43 |
| Show.js | 1085 | 2023-06-06 18:07:43 |