Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001140361-23-027660-index-headers.html | 2023-06-01 08:49:31 | |
| 0001140361-23-027660-index.html | 2023-06-01 08:49:31 | |
| 0001140361-23-027660.txt | 2023-06-01 08:49:31 | |
 0001140361-23-027660-xbrl.zip | 529014 | 2023-06-01 08:49:31 |
| FilingSummary.xml | 2307 | 2023-06-01 08:49:31 |
| Financial_Report.xlsx | 5736 | 2023-06-01 08:49:31 |
| mdu-20230530.xsd | 3847 | 2023-06-01 08:49:31 |
| mdu-20230530_lab.xml | 22546 | 2023-06-01 08:49:31 |
| mdu-20230530_pre.xml | 16033 | 2023-06-01 08:49:31 |
| MetaLinks.json | 20359 | 2023-06-01 08:49:31 |
| ny20009287x1_8k.htm | 57328 | 2023-06-01 08:49:31 |
| ny20009287x1_8k_htm.xml | 4238 | 2023-06-01 08:49:31 |
| ny20009287x1_ex10-1.htm | 171740 | 2023-06-01 08:49:31 |
| ny20009287x1_ex10-2.htm | 384634 | 2023-06-01 08:49:31 |
| ny20009287x1_ex10-3.htm | 286937 | 2023-06-01 08:49:31 |
| ny20009287x1_ex10-4.htm | 185293 | 2023-06-01 08:49:31 |
| ny20009287x1_ex10-5.htm | 731625 | 2023-06-01 08:49:31 |
| ny20009287x1_ex10-6.htm | 825970 | 2023-06-01 08:49:31 |
| ny20009287x1_ex10-7.htm | 797991 | 2023-06-01 08:49:31 |
| ny20009287x1_ex2-1.htm | 388576 | 2023-06-01 08:49:31 |
| ny20009287x1_ex99-1.htm | 9594 | 2023-06-01 08:49:31 |
 ny20009287x1_ex99-1img01.jpg | 13751 | 2023-06-01 08:49:31 |
| R1.htm | 39644 | 2023-06-01 08:49:31 |
| report.css | 2767 | 2023-06-01 08:49:31 |
| Show.js | 1085 | 2023-06-01 08:49:31 |