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|---|---|---|
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| 0000067716-12-000071-index.html | 2012-08-07 11:38:18 | |
| 0000067716-12-000071.txt | 2012-08-07 11:38:18 | |
 0000067716-12-000071-xbrl.zip | 204247 | 2012-08-07 11:38:18 |
| exhibit10a.htm | 67325 | 2012-08-07 11:38:18 |
| exhibit10b.htm | 98663 | 2012-08-07 11:38:18 |
| exhibit12.htm | 36838 | 2012-08-07 11:38:18 |
| exhibit31a.htm | 10470 | 2012-08-07 11:38:18 |
| exhibit31b.htm | 9609 | 2012-08-07 11:38:18 |
| exhibit32.htm | 7095 | 2012-08-07 11:38:18 |
| exhibit4.htm | 1139713 | 2012-08-07 11:38:18 |
| exhibit95.htm | 113843 | 2012-08-07 11:38:18 |
| FilingSummary.xml | 24786 | 2012-08-07 11:38:18 |
| Financial_Report.xls | 1292577 | 2012-08-07 11:38:18 |
| mdu-20120630.xml | 1681731 | 2012-08-07 11:38:18 |
| mdu-20120630.xsd | 54713 | 2012-08-07 11:38:18 |
| mdu-20120630_cal.xml | 82285 | 2012-08-07 11:38:18 |
| mdu-20120630_def.xml | 228721 | 2012-08-07 11:38:18 |
| mdu-20120630_lab.xml | 649336 | 2012-08-07 11:38:18 |
| mdu-20120630_pre.xml | 313011 | 2012-08-07 11:38:18 |
| mduform10q.htm | 1537595 | 2012-08-07 11:38:18 |
| R1.htm | 26664 | 2012-08-07 11:38:18 |
| R10.htm | 25420 | 2012-08-07 11:38:18 |
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| R2.htm | 123943 | 2012-08-07 11:38:18 |
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| R3.htm | 62405 | 2012-08-07 11:38:18 |
| R30.htm | 160562 | 2012-08-07 11:38:18 |
| R31.htm | 107455 | 2012-08-07 11:38:18 |
| R32.htm | 70093 | 2012-08-07 11:38:18 |
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| R5.htm | 15357 | 2012-08-07 11:38:18 |
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| R9.htm | 8649 | 2012-08-07 11:38:18 |
| report.css | 2721 | 2012-08-07 11:38:18 |
| Show.js | 6423 | 2012-08-07 11:38:18 |