Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000102729-20-000004-index-headers.html | 2020-02-26 16:23:04 | |
| 0000102729-20-000004-index.html | 2020-02-26 16:23:04 | |
| 0000102729-20-000004.txt | 2020-02-26 16:23:04 | |
 0000102729-20-000004-xbrl.zip | 712697 | 2020-02-26 16:23:04 |
| a10-k12282019forq42019.htm | 5299172 | 2020-02-26 16:23:04 |
| a10-k12282019forq42019_htm.xml | 6674099 | 2020-02-26 16:23:04 |
 chart-71f635f4b86250fbb70.jpg | 67503 | 2020-02-26 16:23:04 |
 chart-7c35df532cfe522e98e.jpg | 59149 | 2020-02-26 16:23:04 |
| ex21subofvalmont2019.htm | 36313 | 2020-02-26 16:23:04 |
| ex23consentofindependentre.htm | 3449 | 2020-02-26 16:23:04 |
| exhibit24powerofattorney20.htm | 14612 | 2020-02-26 16:23:04 |
| FilingSummary.xml | 64095 | 2020-02-26 16:23:04 |
| Financial_Report.xlsx | 177266 | 2020-02-26 16:23:04 |
| MetaLinks.json | 1152496 | 2020-02-26 16:23:04 |
| R1.htm | 61373 | 2020-02-26 16:23:04 |
| R10.htm | 85310 | 2020-02-26 16:23:04 |
| R100.htm | 68244 | 2020-02-26 16:23:04 |
| R101.htm | 166115 | 2020-02-26 16:23:04 |
| R102.htm | 191782 | 2020-02-26 16:23:04 |
| R103.htm | 39556 | 2020-02-26 16:23:04 |
| R104.htm | 14940 | 2020-02-26 16:23:04 |
| R11.htm | 57481 | 2020-02-26 16:23:04 |
| R12.htm | 11026 | 2020-02-26 16:23:04 |
| R13.htm | 63764 | 2020-02-26 16:23:04 |
| R14.htm | 13092 | 2020-02-26 16:23:04 |
| R15.htm | 15909 | 2020-02-26 16:23:04 |
| R16.htm | 17261 | 2020-02-26 16:23:04 |
| R17.htm | 128172 | 2020-02-26 16:23:04 |
| R18.htm | 6226 | 2020-02-26 16:23:04 |
| R19.htm | 131919 | 2020-02-26 16:23:04 |
| R2.htm | 67949 | 2020-02-26 16:23:04 |
| R20.htm | 35860 | 2020-02-26 16:23:04 |
| R21.htm | 118862 | 2020-02-26 16:23:04 |
| R22.htm | 37432 | 2020-02-26 16:23:04 |
| R23.htm | 8852 | 2020-02-26 16:23:04 |
| R24.htm | 38322 | 2020-02-26 16:23:04 |
| R25.htm | 52513 | 2020-02-26 16:23:04 |
| R26.htm | 15782 | 2020-02-26 16:23:04 |
| R27.htm | 5219 | 2020-02-26 16:23:04 |
| R28.htm | 166368 | 2020-02-26 16:23:04 |
| R29.htm | 39648 | 2020-02-26 16:23:04 |
| R3.htm | 52708 | 2020-02-26 16:23:04 |
| R30.htm | 197408 | 2020-02-26 16:23:04 |
| R31.htm | 1089614 | 2020-02-26 16:23:04 |
| R32.htm | 86050 | 2020-02-26 16:23:04 |
| R33.htm | 46278 | 2020-02-26 16:23:04 |
| R34.htm | 87274 | 2020-02-26 16:23:04 |
| R35.htm | 44062 | 2020-02-26 16:23:04 |
| R36.htm | 43309 | 2020-02-26 16:23:04 |
| R37.htm | 12021 | 2020-02-26 16:23:04 |
| R38.htm | 64503 | 2020-02-26 16:23:04 |
| R39.htm | 11467 | 2020-02-26 16:23:04 |
| R4.htm | 7865 | 2020-02-26 16:23:04 |
| R40.htm | 16746 | 2020-02-26 16:23:04 |
| R41.htm | 17263 | 2020-02-26 16:23:04 |
| R42.htm | 129202 | 2020-02-26 16:23:04 |
| R43.htm | 126818 | 2020-02-26 16:23:04 |
| R44.htm | 36312 | 2020-02-26 16:23:04 |
| R45.htm | 119447 | 2020-02-26 16:23:04 |
| R46.htm | 32681 | 2020-02-26 16:23:04 |
| R47.htm | 30079 | 2020-02-26 16:23:04 |
| R48.htm | 46741 | 2020-02-26 16:23:04 |
| R49.htm | 14696 | 2020-02-26 16:23:04 |
| R5.htm | 96952 | 2020-02-26 16:23:04 |
| R50.htm | 161875 | 2020-02-26 16:23:04 |
| R51.htm | 38399 | 2020-02-26 16:23:04 |
| R52.htm | 194919 | 2020-02-26 16:23:04 |
| R53.htm | 1092399 | 2020-02-26 16:23:04 |
| R54.htm | 86600 | 2020-02-26 16:23:04 |
| R55.htm | 58554 | 2020-02-26 16:23:04 |
| R56.htm | 22163 | 2020-02-26 16:23:04 |
| R57.htm | 7413 | 2020-02-26 16:23:04 |
| R58.htm | 18294 | 2020-02-26 16:23:04 |
| R59.htm | 76994 | 2020-02-26 16:23:04 |
| R6.htm | 19587 | 2020-02-26 16:23:04 |
| R60.htm | 11556 | 2020-02-26 16:23:04 |
| R61.htm | 116483 | 2020-02-26 16:23:04 |
| R62.htm | 42785 | 2020-02-26 16:23:04 |
| R63.htm | 11250 | 2020-02-26 16:23:04 |
| R64.htm | 16735 | 2020-02-26 16:23:04 |
| R65.htm | 74635 | 2020-02-26 16:23:04 |
| R66.htm | 15139 | 2020-02-26 16:23:04 |
| R67.htm | 27347 | 2020-02-26 16:23:04 |
| R68.htm | 14500 | 2020-02-26 16:23:04 |
| R69.htm | 14697 | 2020-02-26 16:23:04 |
| R7.htm | 103616 | 2020-02-26 16:23:04 |
| R70.htm | 17532 | 2020-02-26 16:23:04 |
| R71.htm | 35697 | 2020-02-26 16:23:04 |
| R72.htm | 22818 | 2020-02-26 16:23:04 |
| R73.htm | 49485 | 2020-02-26 16:23:04 |
| R74.htm | 19006 | 2020-02-26 16:23:04 |
| R75.htm | 13109 | 2020-02-26 16:23:04 |
| R76.htm | 180715 | 2020-02-26 16:23:04 |
| R77.htm | 99799 | 2020-02-26 16:23:04 |
| R78.htm | 90685 | 2020-02-26 16:23:04 |
| R79.htm | 37272 | 2020-02-26 16:23:04 |
| R8.htm | 49241 | 2020-02-26 16:23:04 |
| R80.htm | 20254 | 2020-02-26 16:23:04 |
| R81.htm | 34974 | 2020-02-26 16:23:04 |
| R82.htm | 52707 | 2020-02-26 16:23:04 |
| R83.htm | 12152 | 2020-02-26 16:23:04 |
| R84.htm | 30961 | 2020-02-26 16:23:04 |
| R85.htm | 12182 | 2020-02-26 16:23:04 |
| R86.htm | 19041 | 2020-02-26 16:23:04 |
| R87.htm | 51770 | 2020-02-26 16:23:04 |
| R88.htm | 17368 | 2020-02-26 16:23:04 |
| R89.htm | 11850 | 2020-02-26 16:23:04 |
| R9.htm | 15129 | 2020-02-26 16:23:04 |
| R90.htm | 108939 | 2020-02-26 16:23:04 |
| R91.htm | 36724 | 2020-02-26 16:23:04 |
| R92.htm | 16240 | 2020-02-26 16:23:04 |
| R93.htm | 17608 | 2020-02-26 16:23:04 |
| R94.htm | 15842 | 2020-02-26 16:23:04 |
| R95.htm | 19629 | 2020-02-26 16:23:04 |
| R96.htm | 19377 | 2020-02-26 16:23:04 |
| R97.htm | 133235 | 2020-02-26 16:23:04 |
| R98.htm | 29748 | 2020-02-26 16:23:04 |
| R99.htm | 131851 | 2020-02-26 16:23:04 |
| R9999.htm | 13757 | 2020-02-26 16:23:04 |
| report.css | 2767 | 2020-02-26 16:23:04 |
| Show.js | 1086 | 2020-02-26 16:23:04 |
| vmi-20191228.xsd | 89854 | 2020-02-26 16:23:04 |
| vmi-20191228_cal.xml | 182001 | 2020-02-26 16:23:04 |
| vmi-20191228_def.xml | 622397 | 2020-02-26 16:23:04 |
| vmi-20191228_lab.xml | 1454974 | 2020-02-26 16:23:04 |
| vmi-20191228_pre.xml | 936575 | 2020-02-26 16:23:04 |
| vmi-ex311_20191228x10k.htm | 12314 | 2020-02-26 16:23:04 |
| vmi-ex312_20191228x10k.htm | 12333 | 2020-02-26 16:23:04 |
| vmi-ex321_20191228x10k.htm | 11149 | 2020-02-26 16:23:04 |
| vmi-ex49_20191228x10k.htm | 12269 | 2020-02-26 16:23:04 |