Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000102729-18-000008-index-headers.html | 2018-02-28 15:02:43 | |
| 0000102729-18-000008-index.html | 2018-02-28 15:02:43 | |
| 0000102729-18-000008.txt | 2018-02-28 15:02:43 | |
 0000102729-18-000008-xbrl.zip | 511030 | 2018-02-28 15:02:43 |
 chart-571710d6fa2e5ba9bc4.jpg | 63797 | 2018-02-28 15:02:43 |
 chart-578a00ac5ebd51b1bbf.jpg | 68267 | 2018-02-28 15:02:43 |
| ex21subofvalmont2017.htm | 35072 | 2018-02-28 15:02:43 |
| ex23consentofindependentre.htm | 3127 | 2018-02-28 15:02:43 |
| exhibit24powerofattorney20.htm | 14484 | 2018-02-28 15:02:43 |
| FilingSummary.xml | 55793 | 2018-02-28 15:02:43 |
| Financial_Report.xlsx | 159529 | 2018-02-28 15:02:43 |
| R1.htm | 28222 | 2018-02-28 15:02:43 |
| R10.htm | 57876 | 2018-02-28 15:02:43 |
| R11.htm | 13032 | 2018-02-28 15:02:43 |
| R12.htm | 82416 | 2018-02-28 15:02:43 |
| R13.htm | 13278 | 2018-02-28 15:02:43 |
| R14.htm | 17447 | 2018-02-28 15:02:43 |
| R15.htm | 28016 | 2018-02-28 15:02:43 |
| R16.htm | 140608 | 2018-02-28 15:02:43 |
| R17.htm | 6910 | 2018-02-28 15:02:43 |
| R18.htm | 150510 | 2018-02-28 15:02:43 |
| R19.htm | 43866 | 2018-02-28 15:02:43 |
| R2.htm | 78593 | 2018-02-28 15:02:43 |
| R20.htm | 131156 | 2018-02-28 15:02:43 |
| R21.htm | 42275 | 2018-02-28 15:02:43 |
| R22.htm | 8076 | 2018-02-28 15:02:43 |
| R23.htm | 35951 | 2018-02-28 15:02:43 |
| R24.htm | 18215 | 2018-02-28 15:02:43 |
| R25.htm | 16584 | 2018-02-28 15:02:43 |
| R26.htm | 176131 | 2018-02-28 15:02:43 |
| R27.htm | 209843 | 2018-02-28 15:02:43 |
| R28.htm | 7398 | 2018-02-28 15:02:43 |
| R29.htm | 1240300 | 2018-02-28 15:02:43 |
| R3.htm | 39205 | 2018-02-28 15:02:43 |
| R30.htm | 97333 | 2018-02-28 15:02:43 |
| R31.htm | 106542 | 2018-02-28 15:02:43 |
| R32.htm | 19888 | 2018-02-28 15:02:43 |
| R33.htm | 12506 | 2018-02-28 15:02:43 |
| R34.htm | 80966 | 2018-02-28 15:02:43 |
| R35.htm | 11785 | 2018-02-28 15:02:43 |
| R36.htm | 17914 | 2018-02-28 15:02:43 |
| R37.htm | 28157 | 2018-02-28 15:02:43 |
| R38.htm | 138434 | 2018-02-28 15:02:43 |
| R39.htm | 138166 | 2018-02-28 15:02:43 |
| R4.htm | 7713 | 2018-02-28 15:02:43 |
| R40.htm | 44359 | 2018-02-28 15:02:43 |
| R41.htm | 129072 | 2018-02-28 15:02:43 |
| R42.htm | 35771 | 2018-02-28 15:02:43 |
| R43.htm | 26837 | 2018-02-28 15:02:43 |
| R44.htm | 15672 | 2018-02-28 15:02:43 |
| R45.htm | 170761 | 2018-02-28 15:02:43 |
| R46.htm | 202459 | 2018-02-28 15:02:43 |
| R47.htm | 839944 | 2018-02-28 15:02:43 |
| R48.htm | 97010 | 2018-02-28 15:02:43 |
| R49.htm | 73036 | 2018-02-28 15:02:43 |
| R5.htm | 91602 | 2018-02-28 15:02:43 |
| R50.htm | 25353 | 2018-02-28 15:02:43 |
| R51.htm | 7438 | 2018-02-28 15:02:43 |
| R52.htm | 16747 | 2018-02-28 15:02:43 |
| R53.htm | 16488 | 2018-02-28 15:02:43 |
| R54.htm | 13826 | 2018-02-28 15:02:43 |
| R55.htm | 38368 | 2018-02-28 15:02:43 |
| R56.htm | 9839 | 2018-02-28 15:02:43 |
| R57.htm | 139834 | 2018-02-28 15:02:43 |
| R58.htm | 76249 | 2018-02-28 15:02:43 |
| R59.htm | 15226 | 2018-02-28 15:02:43 |
| R6.htm | 22077 | 2018-02-28 15:02:43 |
| R60.htm | 17975 | 2018-02-28 15:02:43 |
| R61.htm | 14714 | 2018-02-28 15:02:43 |
| R62.htm | 17532 | 2018-02-28 15:02:43 |
| R63.htm | 24004 | 2018-02-28 15:02:43 |
| R64.htm | 36169 | 2018-02-28 15:02:43 |
| R65.htm | 20725 | 2018-02-28 15:02:43 |
| R66.htm | 8077 | 2018-02-28 15:02:43 |
| R67.htm | 38214 | 2018-02-28 15:02:43 |
| R68.htm | 17462 | 2018-02-28 15:02:43 |
| R69.htm | 15061 | 2018-02-28 15:02:43 |
| R7.htm | 110179 | 2018-02-28 15:02:43 |
| R70.htm | 178061 | 2018-02-28 15:02:43 |
| R71.htm | 94170 | 2018-02-28 15:02:43 |
| R72.htm | 85541 | 2018-02-28 15:02:43 |
| R73.htm | 37026 | 2018-02-28 15:02:43 |
| R74.htm | 17278 | 2018-02-28 15:02:43 |
| R75.htm | 32731 | 2018-02-28 15:02:43 |
| R76.htm | 45876 | 2018-02-28 15:02:43 |
| R77.htm | 12186 | 2018-02-28 15:02:43 |
| R78.htm | 23664 | 2018-02-28 15:02:43 |
| R79.htm | 26030 | 2018-02-28 15:02:43 |
| R8.htm | 57735 | 2018-02-28 15:02:43 |
| R80.htm | 11860 | 2018-02-28 15:02:43 |
| R81.htm | 105277 | 2018-02-28 15:02:43 |
| R82.htm | 37919 | 2018-02-28 15:02:43 |
| R83.htm | 121968 | 2018-02-28 15:02:43 |
| R84.htm | 29100 | 2018-02-28 15:02:43 |
| R85.htm | 4640 | 2018-02-28 15:02:43 |
| R86.htm | 140583 | 2018-02-28 15:02:43 |
| R87.htm | 79731 | 2018-02-28 15:02:43 |
| R88.htm | 175888 | 2018-02-28 15:02:43 |
| R89.htm | 4437 | 2018-02-28 15:02:43 |
| R9.htm | 15135 | 2018-02-28 15:02:43 |
| R90.htm | 205370 | 2018-02-28 15:02:43 |
| R91.htm | 70640 | 2018-02-28 15:02:43 |
| report.css | 2768 | 2018-02-28 15:02:43 |
| Show.js | 1411 | 2018-02-28 15:02:43 |
 valmont2017ataglance.jpg | 153472 | 2018-02-28 15:02:43 |
 valmont2017ataglance2.jpg | 99493 | 2018-02-28 15:02:43 |
 valmont2017bod.jpg | 104459 | 2018-02-28 15:02:43 |
 valmont2017corpmgmt.jpg | 78629 | 2018-02-28 15:02:43 |
 valmont2017stockinfo.jpg | 158083 | 2018-02-28 15:02:43 |
 valmonthighlightsnewest.jpg | 151116 | 2018-02-28 15:02:43 |
| vmi-20171230.xml | 5993838 | 2018-02-28 15:02:43 |
| vmi-20171230.xsd | 89776 | 2018-02-28 15:02:43 |
| vmi-20171230x10k.htm | 3846186 | 2018-02-28 15:02:43 |
| vmi-20171230_cal.xml | 143504 | 2018-02-28 15:02:43 |
| vmi-20171230_def.xml | 576137 | 2018-02-28 15:02:43 |
| vmi-20171230_lab.xml | 1375499 | 2018-02-28 15:02:43 |
| vmi-20171230_pre.xml | 887254 | 2018-02-28 15:02:43 |
| vmi-ex311_20171230x10k.htm | 12303 | 2018-02-28 15:02:43 |
| vmi-ex312_20171230x10k.htm | 12322 | 2018-02-28 15:02:43 |
| vmi-ex321_20171230x10k.htm | 11138 | 2018-02-28 15:02:43 |