Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000721748-15-000664-index-headers.html | 2015-08-19 11:35:26 | |
| 0000721748-15-000664-index.html | 2015-08-19 11:35:26 | |
| 0000721748-15-000664.txt | 2015-08-19 11:35:26 | |
 0000721748-15-000664-xbrl.zip | 46607 | 2015-08-19 11:35:26 |
| FilingSummary.xml | 19081 | 2015-08-19 11:35:26 |
| Financial_Report.xlsx | 37896 | 2015-08-19 11:35:26 |
| R1.htm | 25768 | 2015-08-19 11:35:26 |
| R10.htm | 7474 | 2015-08-19 11:35:26 |
| R11.htm | 12729 | 2015-08-19 11:35:26 |
| R12.htm | 7656 | 2015-08-19 11:35:26 |
| R13.htm | 17887 | 2015-08-19 11:35:26 |
| R14.htm | 7338 | 2015-08-19 11:35:26 |
| R15.htm | 6175 | 2015-08-19 11:35:26 |
| R16.htm | 6599 | 2015-08-19 11:35:26 |
| R17.htm | 63746 | 2015-08-19 11:35:26 |
| R18.htm | 9959 | 2015-08-19 11:35:26 |
| R19.htm | 8441 | 2015-08-19 11:35:26 |
| R2.htm | 77164 | 2015-08-19 11:35:26 |
| R20.htm | 18194 | 2015-08-19 11:35:26 |
| R21.htm | 14122 | 2015-08-19 11:35:26 |
| R22.htm | 7248 | 2015-08-19 11:35:26 |
| R23.htm | 9897 | 2015-08-19 11:35:26 |
| R24.htm | 10697 | 2015-08-19 11:35:26 |
| R25.htm | 4347 | 2015-08-19 11:35:26 |
| R26.htm | 33216 | 2015-08-19 11:35:26 |
| R27.htm | 15486 | 2015-08-19 11:35:26 |
| R28.htm | 44092 | 2015-08-19 11:35:26 |
| R29.htm | 10409 | 2015-08-19 11:35:26 |
| R3.htm | 22429 | 2015-08-19 11:35:26 |
| R30.htm | 15731 | 2015-08-19 11:35:26 |
| R31.htm | 8878 | 2015-08-19 11:35:26 |
| R32.htm | 7345 | 2015-08-19 11:35:26 |
| R33.htm | 6315 | 2015-08-19 11:35:26 |
| R4.htm | 38124 | 2015-08-19 11:35:26 |
| R5.htm | 75704 | 2015-08-19 11:35:26 |
| R6.htm | 21694 | 2015-08-19 11:35:26 |
| R7.htm | 8544 | 2015-08-19 11:35:26 |
| R8.htm | 8537 | 2015-08-19 11:35:26 |
| R9.htm | 10000 | 2015-08-19 11:35:26 |
| report.css | 2767 | 2015-08-19 11:35:26 |
| Show.js | 1410 | 2015-08-19 11:35:26 |
| vsym-20150630.xml | 165772 | 2015-08-19 11:35:26 |
| vsym-20150630.xsd | 19411 | 2015-08-19 11:35:26 |
| vsym-20150630_cal.xml | 25272 | 2015-08-19 11:35:26 |
| vsym-20150630_def.xml | 49766 | 2015-08-19 11:35:26 |
| vsym-20150630_lab.xml | 162462 | 2015-08-19 11:35:26 |
| vsym-20150630_pre.xml | 125436 | 2015-08-19 11:35:26 |
| vsym10q081515.htm | 229439 | 2015-08-19 11:35:26 |
| vsym10q081515ex31_1.htm | 10313 | 2015-08-19 11:35:26 |
| vsym10q081515ex32_1.htm | 3988 | 2015-08-19 11:35:26 |