Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000102752-18-000010-index-headers.html | 2018-03-07 13:58:33 | |
| 0000102752-18-000010-index.html | 2018-03-07 13:58:33 | |
| 0000102752-18-000010.txt | 2018-03-07 13:58:33 | |
 0000102752-18-000010-xbrl.zip | 208367 | 2018-03-07 13:58:33 |
 chart-e217621bb04256afb91.jpg | 62845 | 2018-03-07 13:58:33 |
| FilingSummary.xml | 35043 | 2018-03-07 13:58:33 |
| Financial_Report.xlsx | 82273 | 2018-03-07 13:58:33 |
| R1.htm | 28239 | 2018-03-07 13:58:33 |
| R10.htm | 16411 | 2018-03-07 13:58:33 |
| R11.htm | 5450 | 2018-03-07 13:58:33 |
| R12.htm | 21524 | 2018-03-07 13:58:33 |
| R13.htm | 17999 | 2018-03-07 13:58:33 |
| R14.htm | 74782 | 2018-03-07 13:58:33 |
| R15.htm | 20299 | 2018-03-07 13:58:33 |
| R16.htm | 5717 | 2018-03-07 13:58:33 |
| R17.htm | 38084 | 2018-03-07 13:58:33 |
| R18.htm | 88606 | 2018-03-07 13:58:33 |
| R19.htm | 67730 | 2018-03-07 13:58:33 |
| R2.htm | 69302 | 2018-03-07 13:58:33 |
| R20.htm | 163480 | 2018-03-07 13:58:33 |
| R21.htm | 5915 | 2018-03-07 13:58:33 |
| R22.htm | 6795 | 2018-03-07 13:58:33 |
| R23.htm | 20555 | 2018-03-07 13:58:33 |
| R24.htm | 99924 | 2018-03-07 13:58:33 |
| R25.htm | 93240 | 2018-03-07 13:58:33 |
| R26.htm | 14678 | 2018-03-07 13:58:33 |
| R27.htm | 12887 | 2018-03-07 13:58:33 |
| R28.htm | 20182 | 2018-03-07 13:58:33 |
| R29.htm | 10566 | 2018-03-07 13:58:33 |
| R3.htm | 10709 | 2018-03-07 13:58:33 |
| R30.htm | 77162 | 2018-03-07 13:58:33 |
| R31.htm | 30370 | 2018-03-07 13:58:33 |
| R32.htm | 90379 | 2018-03-07 13:58:33 |
| R33.htm | 60471 | 2018-03-07 13:58:33 |
| R34.htm | 161782 | 2018-03-07 13:58:33 |
| R35.htm | 16488 | 2018-03-07 13:58:33 |
| R36.htm | 99703 | 2018-03-07 13:58:33 |
| R37.htm | 11978 | 2018-03-07 13:58:33 |
| R38.htm | 45553 | 2018-03-07 13:58:33 |
| R39.htm | 15222 | 2018-03-07 13:58:33 |
| R4.htm | 44910 | 2018-03-07 13:58:33 |
| R40.htm | 24282 | 2018-03-07 13:58:33 |
| R41.htm | 37391 | 2018-03-07 13:58:33 |
| R42.htm | 11701 | 2018-03-07 13:58:33 |
| R43.htm | 56124 | 2018-03-07 13:58:33 |
| R44.htm | 78626 | 2018-03-07 13:58:33 |
| R45.htm | 4888 | 2018-03-07 13:58:33 |
| R46.htm | 49462 | 2018-03-07 13:58:33 |
| R47.htm | 94627 | 2018-03-07 13:58:33 |
| R48.htm | 35347 | 2018-03-07 13:58:33 |
| R49.htm | 106694 | 2018-03-07 13:58:33 |
| R5.htm | 13805 | 2018-03-07 13:58:33 |
| R50.htm | 12239 | 2018-03-07 13:58:33 |
| R51.htm | 44913 | 2018-03-07 13:58:33 |
| R52.htm | 30178 | 2018-03-07 13:58:33 |
| R53.htm | 9373 | 2018-03-07 13:58:33 |
| R54.htm | 7615 | 2018-03-07 13:58:33 |
| R55.htm | 4601 | 2018-03-07 13:58:33 |
| R56.htm | 13365 | 2018-03-07 13:58:33 |
| R57.htm | 12825 | 2018-03-07 13:58:33 |
| R58.htm | 29930 | 2018-03-07 13:58:33 |
| R6.htm | 37139 | 2018-03-07 13:58:33 |
| R7.htm | 4905 | 2018-03-07 13:58:33 |
| R8.htm | 73430 | 2018-03-07 13:58:33 |
| R9.htm | 58211 | 2018-03-07 13:58:33 |
| report.css | 2767 | 2018-03-07 13:58:33 |
| Show.js | 1410 | 2018-03-07 13:58:33 |
| vsec-20171231.xml | 1697001 | 2018-03-07 13:58:33 |
| vsec-20171231.xsd | 46502 | 2018-03-07 13:58:33 |
| vsec-20171231_cal.xml | 118542 | 2018-03-07 13:58:33 |
| vsec-20171231_def.xml | 187406 | 2018-03-07 13:58:33 |
| vsec-20171231_lab.xml | 700894 | 2018-03-07 13:58:33 |
| vsec-20171231_pre.xml | 391613 | 2018-03-07 13:58:33 |
| vsec-2017x10k.htm | 1676028 | 2018-03-07 13:58:33 |
| vsec-2017x10kxex231.htm | 5510 | 2018-03-07 13:58:33 |
| vsec-2017x10kxex311.htm | 13899 | 2018-03-07 13:58:33 |
| vsec-2017x10kxex312.htm | 13490 | 2018-03-07 13:58:33 |
| vsec-2017x10kxex321.htm | 6783 | 2018-03-07 13:58:33 |
| vsec-2017x10kxex322.htm | 6838 | 2018-03-07 13:58:33 |
| vsec-2017x10kxexx21.htm | 12691 | 2018-03-07 13:58:33 |