Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000103872-17-000011-index-headers.html | 2017-03-08 19:40:29 | |
| 0000103872-17-000011-index.html | 2017-03-08 19:40:29 | |
| 0000103872-17-000011.txt | 2017-03-08 19:40:29 | |
 0000103872-17-000011-xbrl.zip | 112102 | 2017-03-08 19:40:29 |
| a01292017-ex311.htm | 13490 | 2017-03-08 19:40:29 |
| a01292017-ex312.htm | 14049 | 2017-03-08 19:40:29 |
| a01292017-ex321.htm | 7471 | 2017-03-08 19:40:29 |
| a01292017-ex322.htm | 7585 | 2017-03-08 19:40:29 |
| FilingSummary.xml | 22705 | 2017-03-08 19:40:29 |
| Financial_Report.xlsx | 47411 | 2017-03-08 19:40:29 |
| R1.htm | 21955 | 2017-03-08 19:40:29 |
| R10.htm | 10945 | 2017-03-08 19:40:29 |
| R11.htm | 30273 | 2017-03-08 19:40:29 |
| R12.htm | 15993 | 2017-03-08 19:40:29 |
| R13.htm | 8831 | 2017-03-08 19:40:29 |
| R14.htm | 8896 | 2017-03-08 19:40:29 |
| R15.htm | 22792 | 2017-03-08 19:40:29 |
| R16.htm | 23132 | 2017-03-08 19:40:29 |
| R17.htm | 27873 | 2017-03-08 19:40:29 |
| R18.htm | 7127 | 2017-03-08 19:40:29 |
| R19.htm | 112409 | 2017-03-08 19:40:29 |
| R2.htm | 49471 | 2017-03-08 19:40:29 |
| R20.htm | 8259 | 2017-03-08 19:40:29 |
| R21.htm | 27352 | 2017-03-08 19:40:29 |
| R22.htm | 32760 | 2017-03-08 19:40:29 |
| R23.htm | 10940 | 2017-03-08 19:40:29 |
| R24.htm | 11035 | 2017-03-08 19:40:29 |
| R25.htm | 20629 | 2017-03-08 19:40:29 |
| R26.htm | 27566 | 2017-03-08 19:40:29 |
| R27.htm | 103870 | 2017-03-08 19:40:29 |
| R28.htm | 15629 | 2017-03-08 19:40:29 |
| R29.htm | 35930 | 2017-03-08 19:40:29 |
| R3.htm | 12907 | 2017-03-08 19:40:29 |
| R30.htm | 10998 | 2017-03-08 19:40:29 |
| R31.htm | 13701 | 2017-03-08 19:40:29 |
| R32.htm | 4926 | 2017-03-08 19:40:29 |
| R33.htm | 77911 | 2017-03-08 19:40:29 |
| R34.htm | 21946 | 2017-03-08 19:40:29 |
| R35.htm | 10553 | 2017-03-08 19:40:29 |
| R36.htm | 42407 | 2017-03-08 19:40:29 |
| R37.htm | 45922 | 2017-03-08 19:40:29 |
| R38.htm | 23167 | 2017-03-08 19:40:29 |
| R4.htm | 7569 | 2017-03-08 19:40:29 |
| R5.htm | 81307 | 2017-03-08 19:40:29 |
| R6.htm | 21596 | 2017-03-08 19:40:29 |
| R7.htm | 82817 | 2017-03-08 19:40:29 |
| R8.htm | 6939 | 2017-03-08 19:40:29 |
| R9.htm | 26438 | 2017-03-08 19:40:29 |
| report.css | 2767 | 2017-03-08 19:40:29 |
| Show.js | 1410 | 2017-03-08 19:40:29 |
| visi-01292017x10q.htm | 651717 | 2017-03-08 19:40:29 |
| visi-20170129.xml | 630060 | 2017-03-08 19:40:29 |
| visi-20170129.xsd | 31404 | 2017-03-08 19:40:29 |
| visi-20170129_cal.xml | 62694 | 2017-03-08 19:40:29 |
| visi-20170129_def.xml | 120106 | 2017-03-08 19:40:29 |
| visi-20170129_lab.xml | 395547 | 2017-03-08 19:40:29 |
| visi-20170129_pre.xml | 229381 | 2017-03-08 19:40:29 |