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|---|---|---|
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| 0000067716-11-000099-index.html | 2011-11-04 09:25:48 | |
| 0000067716-11-000099.txt | 2011-11-04 09:25:48 | |
 0000067716-11-000099-xbrl.zip | 188771 | 2011-11-04 09:25:48 |
| exhibit10a.htm | 1062851 | 2011-11-04 09:25:48 |
| exhibit10b.htm | 47379 | 2011-11-04 09:25:48 |
| exhibit12.htm | 46315 | 2011-11-04 09:25:48 |
| exhibit31a.htm | 12292 | 2011-11-04 09:25:48 |
| exhibit31b.htm | 13563 | 2011-11-04 09:25:48 |
| exhibit32.htm | 7799 | 2011-11-04 09:25:48 |
| FilingSummary.xml | 21332 | 2011-11-04 09:25:48 |
| Financial_Report.xls | 1518964 | 2011-11-04 09:25:48 |
| mdu-20110930.xml | 1859951 | 2011-11-04 09:25:48 |
| mdu-20110930.xsd | 63574 | 2011-11-04 09:25:48 |
| mdu-20110930_cal.xml | 93522 | 2011-11-04 09:25:48 |
| mdu-20110930_def.xml | 560192 | 2011-11-04 09:25:48 |
| mdu-20110930_lab.xml | 717305 | 2011-11-04 09:25:48 |
| mdu-20110930_pre.xml | 335942 | 2011-11-04 09:25:48 |
| mduform10-q.htm | 2341227 | 2011-11-04 09:25:48 |
| R1.htm | 23751 | 2011-11-04 09:25:48 |
| R10.htm | 7349 | 2011-11-04 09:25:48 |
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| R30.htm | 132238 | 2011-11-04 09:25:48 |
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| R9.htm | 25503 | 2011-11-04 09:25:48 |
| report.css | 2721 | 2011-11-04 09:25:48 |
| Show.js | 6423 | 2011-11-04 09:25:48 |