Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-19-028396-index-headers.html | 2019-08-02 16:27:10 | |
| 0001564590-19-028396-index.html | 2019-08-02 16:27:10 | |
| 0001564590-19-028396.txt | 2019-08-02 16:27:10 | |
 0001564590-19-028396-xbrl.zip | 324492 | 2019-08-02 16:27:10 |
| FilingSummary.xml | 65712 | 2019-08-02 16:27:10 |
| Financial_Report.xlsx | 131518 | 2019-08-02 16:27:10 |
 go1vu3m0htlj000001.jpg | 2346 | 2019-08-02 16:27:10 |
| MetaLinks.json | 1015175 | 2019-08-02 16:27:10 |
| R1.htm | 43883 | 2019-08-02 16:27:10 |
| R10.htm | 887226 | 2019-08-02 16:27:10 |
| R11.htm | 142830 | 2019-08-02 16:27:10 |
| R12.htm | 150677 | 2019-08-02 16:27:10 |
| R13.htm | 22459 | 2019-08-02 16:27:10 |
| R14.htm | 39314 | 2019-08-02 16:27:10 |
| R15.htm | 42055 | 2019-08-02 16:27:10 |
| R16.htm | 32380 | 2019-08-02 16:27:10 |
| R17.htm | 187763 | 2019-08-02 16:27:10 |
| R18.htm | 91358 | 2019-08-02 16:27:10 |
| R19.htm | 73516 | 2019-08-02 16:27:10 |
| R2.htm | 97159 | 2019-08-02 16:27:10 |
| R20.htm | 53976 | 2019-08-02 16:27:10 |
| R21.htm | 90293 | 2019-08-02 16:27:10 |
| R22.htm | 88384 | 2019-08-02 16:27:10 |
| R23.htm | 86668 | 2019-08-02 16:27:10 |
| R24.htm | 6402 | 2019-08-02 16:27:10 |
| R25.htm | 161461 | 2019-08-02 16:27:10 |
| R26.htm | 53707 | 2019-08-02 16:27:10 |
| R27.htm | 255358 | 2019-08-02 16:27:10 |
| R28.htm | 12955 | 2019-08-02 16:27:10 |
| R29.htm | 21012 | 2019-08-02 16:27:10 |
| R3.htm | 15376 | 2019-08-02 16:27:10 |
| R30.htm | 236758 | 2019-08-02 16:27:10 |
| R31.htm | 5272 | 2019-08-02 16:27:10 |
| R32.htm | 7255 | 2019-08-02 16:27:10 |
| R33.htm | 81304 | 2019-08-02 16:27:10 |
| R34.htm | 885036 | 2019-08-02 16:27:10 |
| R35.htm | 142214 | 2019-08-02 16:27:10 |
| R36.htm | 146778 | 2019-08-02 16:27:10 |
| R37.htm | 22532 | 2019-08-02 16:27:10 |
| R38.htm | 39139 | 2019-08-02 16:27:10 |
| R39.htm | 40481 | 2019-08-02 16:27:10 |
| R4.htm | 110177 | 2019-08-02 16:27:10 |
| R40.htm | 32106 | 2019-08-02 16:27:10 |
| R41.htm | 190771 | 2019-08-02 16:27:10 |
| R42.htm | 90714 | 2019-08-02 16:27:10 |
| R43.htm | 73033 | 2019-08-02 16:27:10 |
| R44.htm | 48557 | 2019-08-02 16:27:10 |
| R45.htm | 86000 | 2019-08-02 16:27:10 |
| R46.htm | 87285 | 2019-08-02 16:27:10 |
| R47.htm | 86778 | 2019-08-02 16:27:10 |
| R48.htm | 160773 | 2019-08-02 16:27:10 |
| R49.htm | 51458 | 2019-08-02 16:27:10 |
| R5.htm | 35714 | 2019-08-02 16:27:10 |
| R50.htm | 261036 | 2019-08-02 16:27:10 |
| R51.htm | 17262 | 2019-08-02 16:27:10 |
| R52.htm | 235313 | 2019-08-02 16:27:10 |
| R53.htm | 53058 | 2019-08-02 16:27:10 |
| R54.htm | 23180 | 2019-08-02 16:27:10 |
| R55.htm | 10624 | 2019-08-02 16:27:10 |
| R56.htm | 11085 | 2019-08-02 16:27:10 |
| R57.htm | 126180 | 2019-08-02 16:27:10 |
| R58.htm | 15683 | 2019-08-02 16:27:10 |
| R59.htm | 53634 | 2019-08-02 16:27:10 |
| R6.htm | 84599 | 2019-08-02 16:27:10 |
| R60.htm | 38172 | 2019-08-02 16:27:10 |
| R61.htm | 14209 | 2019-08-02 16:27:10 |
| R62.htm | 67871 | 2019-08-02 16:27:10 |
| R63.htm | 47001 | 2019-08-02 16:27:10 |
| R64.htm | 18057 | 2019-08-02 16:27:10 |
| R65.htm | 8833 | 2019-08-02 16:27:10 |
| R66.htm | 19625 | 2019-08-02 16:27:10 |
| R67.htm | 21340 | 2019-08-02 16:27:10 |
| R68.htm | 10290 | 2019-08-02 16:27:10 |
| R69.htm | 14585 | 2019-08-02 16:27:10 |
| R7.htm | 4803 | 2019-08-02 16:27:10 |
| R70.htm | 18884 | 2019-08-02 16:27:10 |
| R71.htm | 34524 | 2019-08-02 16:27:10 |
| R72.htm | 6516 | 2019-08-02 16:27:10 |
| R73.htm | 17502 | 2019-08-02 16:27:10 |
| R74.htm | 53303 | 2019-08-02 16:27:10 |
| R75.htm | 35327 | 2019-08-02 16:27:10 |
| R76.htm | 26514 | 2019-08-02 16:27:10 |
| R77.htm | 17604 | 2019-08-02 16:27:10 |
| R78.htm | 50988 | 2019-08-02 16:27:10 |
| R79.htm | 15686 | 2019-08-02 16:27:10 |
| R8.htm | 84659 | 2019-08-02 16:27:10 |
| R80.htm | 8114 | 2019-08-02 16:27:10 |
| R81.htm | 35414 | 2019-08-02 16:27:10 |
| R82.htm | 31632 | 2019-08-02 16:27:10 |
| R83.htm | 10222 | 2019-08-02 16:27:10 |
| R84.htm | 28464 | 2019-08-02 16:27:10 |
| R85.htm | 18288 | 2019-08-02 16:27:10 |
| R86.htm | 26286 | 2019-08-02 16:27:10 |
| R87.htm | 28723 | 2019-08-02 16:27:10 |
| R88.htm | 19217 | 2019-08-02 16:27:10 |
| R89.htm | 10553 | 2019-08-02 16:27:10 |
| R9.htm | 70940 | 2019-08-02 16:27:10 |
| R90.htm | 28275 | 2019-08-02 16:27:10 |
| R91.htm | 67408 | 2019-08-02 16:27:10 |
| R92.htm | 16818 | 2019-08-02 16:27:10 |
| R93.htm | 31570 | 2019-08-02 16:27:10 |
| R94.htm | 44028 | 2019-08-02 16:27:10 |
| R95.htm | 21848 | 2019-08-02 16:27:10 |
| R96.htm | 12459 | 2019-08-02 16:27:10 |
| R97.htm | 56521 | 2019-08-02 16:27:10 |
| R98.htm | 10605 | 2019-08-02 16:27:10 |
| R99.htm | 11690 | 2019-08-02 16:27:10 |
| report.css | 2768 | 2019-08-02 16:27:10 |
| Show.js | 1086 | 2019-08-02 16:27:10 |
| vvi-10q_20190630.htm | 6600399 | 2019-08-02 16:27:10 |
| vvi-10q_20190630_htm.xml | 6625833 | 2019-08-02 16:27:10 |
| vvi-20190630.xsd | 111898 | 2019-08-02 16:27:10 |
| vvi-20190630_cal.xml | 152631 | 2019-08-02 16:27:10 |
| vvi-20190630_def.xml | 310083 | 2019-08-02 16:27:10 |
| vvi-20190630_lab.xml | 777964 | 2019-08-02 16:27:10 |
| vvi-20190630_pre.xml | 602166 | 2019-08-02 16:27:10 |
| vvi-ex311_6.htm | 8897 | 2019-08-02 16:27:10 |
| vvi-ex312_7.htm | 8884 | 2019-08-02 16:27:10 |
| vvi-ex321_8.htm | 9472 | 2019-08-02 16:27:10 |