Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000102741-17-000005-index-headers.html | 2017-05-31 10:08:22 | |
| 0000102741-17-000005-index.html | 2017-05-31 10:08:22 | |
| 0000102741-17-000005.txt | 2017-05-31 10:08:22 | |
 0000102741-17-000005-xbrl.zip | 155946 | 2017-05-31 10:08:22 |
| FilingSummary.xml | 33289 | 2017-05-31 10:08:22 |
| Financial_Report.xlsx | 65203 | 2017-05-31 10:08:22 |
| R1.htm | 20396 | 2017-05-31 10:08:22 |
| R10.htm | 10970 | 2017-05-31 10:08:22 |
| R11.htm | 16893 | 2017-05-31 10:08:22 |
| R12.htm | 157631 | 2017-05-31 10:08:22 |
| R13.htm | 33438 | 2017-05-31 10:08:22 |
| R14.htm | 7682 | 2017-05-31 10:08:22 |
| R15.htm | 56060 | 2017-05-31 10:08:22 |
| R16.htm | 17359 | 2017-05-31 10:08:22 |
| R17.htm | 47700 | 2017-05-31 10:08:22 |
| R18.htm | 86995 | 2017-05-31 10:08:22 |
| R19.htm | 62122 | 2017-05-31 10:08:22 |
| R2.htm | 89086 | 2017-05-31 10:08:22 |
| R20.htm | 119692 | 2017-05-31 10:08:22 |
| R21.htm | 20458 | 2017-05-31 10:08:22 |
| R22.htm | 37932 | 2017-05-31 10:08:22 |
| R23.htm | 17334 | 2017-05-31 10:08:22 |
| R24.htm | 14950 | 2017-05-31 10:08:22 |
| R25.htm | 152609 | 2017-05-31 10:08:22 |
| R26.htm | 30210 | 2017-05-31 10:08:22 |
| R27.htm | 54636 | 2017-05-31 10:08:22 |
| R28.htm | 13709 | 2017-05-31 10:08:22 |
| R29.htm | 44608 | 2017-05-31 10:08:22 |
| R3.htm | 13583 | 2017-05-31 10:08:22 |
| R30.htm | 83978 | 2017-05-31 10:08:22 |
| R31.htm | 56191 | 2017-05-31 10:08:22 |
| R32.htm | 116460 | 2017-05-31 10:08:22 |
| R33.htm | 28881 | 2017-05-31 10:08:22 |
| R34.htm | 6463 | 2017-05-31 10:08:22 |
| R35.htm | 11026 | 2017-05-31 10:08:22 |
| R36.htm | 26156 | 2017-05-31 10:08:22 |
| R37.htm | 10886 | 2017-05-31 10:08:22 |
| R38.htm | 9086 | 2017-05-31 10:08:22 |
| R39.htm | 4202 | 2017-05-31 10:08:22 |
| R4.htm | 46923 | 2017-05-31 10:08:22 |
| R40.htm | 32075 | 2017-05-31 10:08:22 |
| R41.htm | 26893 | 2017-05-31 10:08:22 |
| R42.htm | 21858 | 2017-05-31 10:08:22 |
| R43.htm | 16728 | 2017-05-31 10:08:22 |
| R44.htm | 5681 | 2017-05-31 10:08:22 |
| R45.htm | 23412 | 2017-05-31 10:08:22 |
| R46.htm | 16124 | 2017-05-31 10:08:22 |
| R47.htm | 20815 | 2017-05-31 10:08:22 |
| R48.htm | 5753 | 2017-05-31 10:08:22 |
| R49.htm | 30322 | 2017-05-31 10:08:22 |
| R5.htm | 11857 | 2017-05-31 10:08:22 |
| R50.htm | 4105 | 2017-05-31 10:08:22 |
| R51.htm | 23787 | 2017-05-31 10:08:22 |
| R52.htm | 11784 | 2017-05-31 10:08:22 |
| R53.htm | 50213 | 2017-05-31 10:08:22 |
| R54.htm | 10827 | 2017-05-31 10:08:22 |
| R6.htm | 75158 | 2017-05-31 10:08:22 |
| R7.htm | 15463 | 2017-05-31 10:08:22 |
| R8.htm | 5596 | 2017-05-31 10:08:22 |
| R9.htm | 17631 | 2017-05-31 10:08:22 |
| report.css | 2767 | 2017-05-31 10:08:22 |
| Show.js | 1410 | 2017-05-31 10:08:22 |
| val-20170428.xml | 1642669 | 2017-05-31 10:08:22 |
| val-20170428.xsd | 34399 | 2017-05-31 10:08:22 |
| val-20170428x10q.htm | 1102229 | 2017-05-31 10:08:22 |
| val-20170428x10qxexh311.htm | 12923 | 2017-05-31 10:08:22 |
| val-20170428x10qxexh312.htm | 13505 | 2017-05-31 10:08:22 |
| val-20170428x10qxexh321.htm | 13032 | 2017-05-31 10:08:22 |
| val-20170428_cal.xml | 72012 | 2017-05-31 10:08:22 |
| val-20170428_def.xml | 121883 | 2017-05-31 10:08:22 |
| val-20170428_lab.xml | 419749 | 2017-05-31 10:08:22 |
| val-20170428_pre.xml | 248103 | 2017-05-31 10:08:22 |