Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000067716-14-000123-index-headers.html | 2014-11-07 09:38:07 | |
| 0000067716-14-000123-index.html | 2014-11-07 09:38:07 | |
| 0000067716-14-000123.txt | 2014-11-07 09:38:07 | |
 0000067716-14-000123-xbrl.zip | 269678 | 2014-11-07 09:38:07 |
| FilingSummary.xml | 34304 | 2014-11-07 09:38:07 |
| Financial_Report.xls | 1900630 | 2014-11-07 09:38:07 |
| Financial_Report.xlsx | 258784 | 2014-11-07 09:38:07 |
| mdu-20140930.xml | 2442128 | 2014-11-07 09:38:07 |
| mdu-20140930.xsd | 62344 | 2014-11-07 09:38:07 |
| mdu-20140930_cal.xml | 99844 | 2014-11-07 09:38:07 |
| mdu-20140930_def.xml | 323148 | 2014-11-07 09:38:07 |
| mdu-20140930_lab.xml | 791428 | 2014-11-07 09:38:07 |
| mdu-20140930_pre.xml | 417927 | 2014-11-07 09:38:07 |
| mdu-9302014q3ex10a.htm | 582723 | 2014-11-07 09:38:07 |
| mdu-9302014q3ex10b.htm | 42232 | 2014-11-07 09:38:07 |
| mdu-9302014q3ex12.htm | 36924 | 2014-11-07 09:38:07 |
| mdu-9302014q3ex31a.htm | 9796 | 2014-11-07 09:38:07 |
| mdu-9302014q3ex31b.htm | 9219 | 2014-11-07 09:38:07 |
| mdu-9302014q3ex32.htm | 6418 | 2014-11-07 09:38:07 |
| mdu-9302014q3ex95.htm | 134128 | 2014-11-07 09:38:07 |
| mdu-9x30x2014form10xq.htm | 1830675 | 2014-11-07 09:38:07 |
| R1.htm | 26660 | 2014-11-07 09:38:07 |
| R10.htm | 8528 | 2014-11-07 09:38:07 |
| R11.htm | 24865 | 2014-11-07 09:38:07 |
| R12.htm | 7493 | 2014-11-07 09:38:07 |
| R13.htm | 6696 | 2014-11-07 09:38:07 |
| R14.htm | 22194 | 2014-11-07 09:38:07 |
| R15.htm | 19139 | 2014-11-07 09:38:07 |
| R16.htm | 10114 | 2014-11-07 09:38:07 |
| R17.htm | 146995 | 2014-11-07 09:38:07 |
| R18.htm | 11265 | 2014-11-07 09:38:07 |
| R19.htm | 9356 | 2014-11-07 09:38:07 |
| R2.htm | 111354 | 2014-11-07 09:38:07 |
| R20.htm | 9013 | 2014-11-07 09:38:07 |
| R21.htm | 78700 | 2014-11-07 09:38:07 |
| R22.htm | 125394 | 2014-11-07 09:38:07 |
| R23.htm | 158014 | 2014-11-07 09:38:07 |
| R24.htm | 10886 | 2014-11-07 09:38:07 |
| R25.htm | 53824 | 2014-11-07 09:38:07 |
| R26.htm | 116737 | 2014-11-07 09:38:07 |
| R27.htm | 65802 | 2014-11-07 09:38:07 |
| R28.htm | 12303 | 2014-11-07 09:38:07 |
| R29.htm | 84716 | 2014-11-07 09:38:07 |
| R3.htm | 60235 | 2014-11-07 09:38:07 |
| R30.htm | 7004 | 2014-11-07 09:38:07 |
| R31.htm | 21939 | 2014-11-07 09:38:07 |
| R32.htm | 20342 | 2014-11-07 09:38:07 |
| R33.htm | 17738 | 2014-11-07 09:38:07 |
| R34.htm | 146578 | 2014-11-07 09:38:07 |
| R35.htm | 74380 | 2014-11-07 09:38:07 |
| R36.htm | 112626 | 2014-11-07 09:38:07 |
| R37.htm | 153254 | 2014-11-07 09:38:07 |
| R38.htm | 48672 | 2014-11-07 09:38:07 |
| R39.htm | 108070 | 2014-11-07 09:38:07 |
| R4.htm | 24661 | 2014-11-07 09:38:07 |
| R40.htm | 62653 | 2014-11-07 09:38:07 |
| R41.htm | 44327 | 2014-11-07 09:38:07 |
| R42.htm | 8798 | 2014-11-07 09:38:07 |
| R43.htm | 25205 | 2014-11-07 09:38:07 |
| R44.htm | 5100 | 2014-11-07 09:38:07 |
| R45.htm | 7744 | 2014-11-07 09:38:07 |
| R46.htm | 16380 | 2014-11-07 09:38:07 |
| R47.htm | 11314 | 2014-11-07 09:38:07 |
| R48.htm | 5750 | 2014-11-07 09:38:07 |
| R49.htm | 29690 | 2014-11-07 09:38:07 |
| R5.htm | 162770 | 2014-11-07 09:38:07 |
| R50.htm | 46163 | 2014-11-07 09:38:07 |
| R51.htm | 6020 | 2014-11-07 09:38:07 |
| R52.htm | 14300 | 2014-11-07 09:38:07 |
| R53.htm | 26830 | 2014-11-07 09:38:07 |
| R54.htm | 42620 | 2014-11-07 09:38:07 |
| R55.htm | 22373 | 2014-11-07 09:38:07 |
| R56.htm | 22131 | 2014-11-07 09:38:07 |
| R57.htm | 20137 | 2014-11-07 09:38:07 |
| R58.htm | 29669 | 2014-11-07 09:38:07 |
| R59.htm | 28835 | 2014-11-07 09:38:07 |
| R6.htm | 14725 | 2014-11-07 09:38:07 |
| R60.htm | 83662 | 2014-11-07 09:38:07 |
| R61.htm | 10792 | 2014-11-07 09:38:07 |
| R62.htm | 27554 | 2014-11-07 09:38:07 |
| R63.htm | 62478 | 2014-11-07 09:38:07 |
| R64.htm | 33971 | 2014-11-07 09:38:07 |
| R65.htm | 34094 | 2014-11-07 09:38:07 |
| R66.htm | 20492 | 2014-11-07 09:38:07 |
| R67.htm | 17800 | 2014-11-07 09:38:07 |
| R68.htm | 20395 | 2014-11-07 09:38:07 |
| R69.htm | 43162 | 2014-11-07 09:38:07 |
| R7.htm | 131418 | 2014-11-07 09:38:07 |
| R70.htm | 45410 | 2014-11-07 09:38:07 |
| R71.htm | 8159 | 2014-11-07 09:38:07 |
| R8.htm | 9002 | 2014-11-07 09:38:07 |
| R9.htm | 6252 | 2014-11-07 09:38:07 |
| report.css | 2740 | 2014-11-07 09:38:07 |
| Show.js | 1410 | 2014-11-07 09:38:07 |