Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001628280-20-003532-index-headers.html | 2020-03-13 16:17:38 | |
| 0001628280-20-003532-index.html | 2020-03-13 16:17:38 | |
| 0001628280-20-003532.txt | 2020-03-13 16:17:38 | |
 0001628280-20-003532-xbrl.zip | 565380 | 2020-03-13 16:17:38 |
| FilingSummary.xml | 37775 | 2020-03-13 16:17:38 |
| Financial_Report.xlsx | 81306 | 2020-03-13 16:17:38 |
| MetaLinks.json | 622445 | 2020-03-13 16:17:38 |
| R1.htm | 57159 | 2020-03-13 16:17:38 |
| R10.htm | 18824 | 2020-03-13 16:17:38 |
| R11.htm | 26235 | 2020-03-13 16:17:38 |
| R12.htm | 42489 | 2020-03-13 16:17:38 |
| R13.htm | 5691 | 2020-03-13 16:17:38 |
| R14.htm | 10512 | 2020-03-13 16:17:38 |
| R15.htm | 77982 | 2020-03-13 16:17:38 |
| R16.htm | 24505 | 2020-03-13 16:17:38 |
| R17.htm | 73227 | 2020-03-13 16:17:38 |
| R18.htm | 7117 | 2020-03-13 16:17:38 |
| R19.htm | 32459 | 2020-03-13 16:17:38 |
| R2.htm | 71180 | 2020-03-13 16:17:38 |
| R20.htm | 5908 | 2020-03-13 16:17:38 |
| R21.htm | 5287 | 2020-03-13 16:17:38 |
| R22.htm | 29355 | 2020-03-13 16:17:38 |
| R23.htm | 6412 | 2020-03-13 16:17:38 |
| R24.htm | 111917 | 2020-03-13 16:17:38 |
| R25.htm | 46208 | 2020-03-13 16:17:38 |
| R26.htm | 19727 | 2020-03-13 16:17:38 |
| R27.htm | 14134 | 2020-03-13 16:17:38 |
| R28.htm | 25937 | 2020-03-13 16:17:38 |
| R29.htm | 32086 | 2020-03-13 16:17:38 |
| R3.htm | 21576 | 2020-03-13 16:17:38 |
| R30.htm | 80485 | 2020-03-13 16:17:38 |
| R31.htm | 41273 | 2020-03-13 16:17:38 |
| R32.htm | 70640 | 2020-03-13 16:17:38 |
| R33.htm | 25391 | 2020-03-13 16:17:38 |
| R34.htm | 28052 | 2020-03-13 16:17:38 |
| R35.htm | 20951 | 2020-03-13 16:17:38 |
| R36.htm | 16461 | 2020-03-13 16:17:38 |
| R37.htm | 8844 | 2020-03-13 16:17:38 |
| R38.htm | 23141 | 2020-03-13 16:17:38 |
| R39.htm | 17119 | 2020-03-13 16:17:38 |
| R4.htm | 39119 | 2020-03-13 16:17:38 |
| R40.htm | 9214 | 2020-03-13 16:17:38 |
| R41.htm | 24936 | 2020-03-13 16:17:38 |
| R42.htm | 19125 | 2020-03-13 16:17:38 |
| R43.htm | 11339 | 2020-03-13 16:17:38 |
| R44.htm | 114447 | 2020-03-13 16:17:38 |
| R45.htm | 19523 | 2020-03-13 16:17:38 |
| R46.htm | 32310 | 2020-03-13 16:17:38 |
| R47.htm | 18695 | 2020-03-13 16:17:38 |
| R48.htm | 18603 | 2020-03-13 16:17:38 |
| R49.htm | 18171 | 2020-03-13 16:17:38 |
| R5.htm | 53719 | 2020-03-13 16:17:38 |
| R50.htm | 24374 | 2020-03-13 16:17:38 |
| R51.htm | 15849 | 2020-03-13 16:17:38 |
| R52.htm | 12354 | 2020-03-13 16:17:38 |
| R53.htm | 12768 | 2020-03-13 16:17:38 |
| R54.htm | 20976 | 2020-03-13 16:17:38 |
| R55.htm | 9681 | 2020-03-13 16:17:38 |
| R56.htm | 41950 | 2020-03-13 16:17:38 |
| R57.htm | 24606 | 2020-03-13 16:17:38 |
| R58.htm | 60258 | 2020-03-13 16:17:38 |
| R59.htm | 25963 | 2020-03-13 16:17:38 |
| R6.htm | 96811 | 2020-03-13 16:17:38 |
| R60.htm | 15559 | 2020-03-13 16:17:38 |
| R61.htm | 11409 | 2020-03-13 16:17:38 |
| R62.htm | 43278 | 2020-03-13 16:17:38 |
| R63.htm | 19553 | 2020-03-13 16:17:38 |
| R7.htm | 7272 | 2020-03-13 16:17:38 |
| R8.htm | 67735 | 2020-03-13 16:17:38 |
| R9.htm | 19869 | 2020-03-13 16:17:38 |
| R9999.htm | 4819 | 2020-03-13 16:17:38 |
| report.css | 2767 | 2020-03-13 16:17:38 |
| Show.js | 1085 | 2020-03-13 16:17:38 |
| wkhs-20191231.htm | 2537926 | 2020-03-13 16:17:38 |
| wkhs-20191231.xsd | 59828 | 2020-03-13 16:17:38 |
| wkhs-20191231x10kxex10.htm | 191905 | 2020-03-13 16:17:38 |
| wkhs-20191231x10kxex311.htm | 9442 | 2020-03-13 16:17:38 |
| wkhs-20191231x10kxex312.htm | 9645 | 2020-03-13 16:17:38 |
| wkhs-20191231x10kxex321.htm | 4154 | 2020-03-13 16:17:38 |
| wkhs-20191231x10kxex322.htm | 4200 | 2020-03-13 16:17:38 |
| wkhs-20191231_cal.xml | 76183 | 2020-03-13 16:17:38 |
| wkhs-20191231_def.xml | 302341 | 2020-03-13 16:17:38 |
 wkhs-20191231_g1.jpg | 62331 | 2020-03-13 16:17:38 |
 wkhs-20191231_g2.jpg | 22082 | 2020-03-13 16:17:38 |
 wkhs-20191231_g3.jpg | 60335 | 2020-03-13 16:17:38 |
 wkhs-20191231_g4.jpg | 18430 | 2020-03-13 16:17:38 |
 wkhs-20191231_g5.jpg | 48759 | 2020-03-13 16:17:38 |
| wkhs-20191231_htm.xml | 1315390 | 2020-03-13 16:17:38 |
| wkhs-20191231_lab.xml | 705817 | 2020-03-13 16:17:38 |
| wkhs-20191231_pre.xml | 469764 | 2020-03-13 16:17:38 |
| wkhs-2019x10kxex1041xi.htm | 117747 | 2020-03-13 16:17:38 |
| wkhs-2019x10kxexx412de.htm | 22977 | 2020-03-13 16:17:38 |
| wkhs-2019x10xkxex1042s.htm | 287964 | 2020-03-13 16:17:38 |
| wkhs-2019x10xkxex211.htm | 2275 | 2020-03-13 16:17:38 |
| wkhs-2019x10xkxex231.htm | 2523 | 2020-03-13 16:17:38 |