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| 0000067716-23-000004.txt | 2023-01-24 17:15:16 | |
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| exhibit101-corvexcoopagmte.htm | 214669 | 2023-01-24 17:15:16 |
| exhibit99-corvex.htm | 10950 | 2023-01-24 17:15:16 |
| FilingSummary.xml | 1718 | 2023-01-24 17:15:16 |
| Financial_Report.xlsx | 5713 | 2023-01-24 17:15:16 |
| mdu-20230124.htm | 47364 | 2023-01-24 17:15:16 |
| mdu-20230124.xsd | 2137 | 2023-01-24 17:15:16 |
| mdu-20230124_def.xml | 14762 | 2023-01-24 17:15:16 |
| mdu-20230124_htm.xml | 11289 | 2023-01-24 17:15:16 |
| mdu-20230124_lab.xml | 28551 | 2023-01-24 17:15:16 |
| mdu-20230124_pre.xml | 15382 | 2023-01-24 17:15:16 |
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| R1.htm | 39852 | 2023-01-24 17:15:16 |
| report.css | 2767 | 2023-01-24 17:15:16 |
| Show.js | 1085 | 2023-01-24 17:15:16 |