Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-21-105173-index-headers.html | 2021-08-13 16:49:52 | |
| 0001104659-21-105173-index.html | 2021-08-13 16:49:52 | |
| 0001104659-21-105173.txt | 2021-08-13 16:49:52 | |
 0001104659-21-105173-xbrl.zip | 166721 | 2021-08-13 16:49:52 |
| FilingSummary.xml | 28529 | 2021-08-13 16:49:52 |
| Financial_Report.xlsx | 70123 | 2021-08-13 16:49:52 |
| MetaLinks.json | 462953 | 2021-08-13 16:49:52 |
| R1.htm | 52220 | 2021-08-13 16:49:52 |
| R10.htm | 24614 | 2021-08-13 16:49:52 |
| R11.htm | 76777 | 2021-08-13 16:49:52 |
| R12.htm | 6824 | 2021-08-13 16:49:52 |
| R13.htm | 264520 | 2021-08-13 16:49:52 |
| R14.htm | 8327 | 2021-08-13 16:49:52 |
| R15.htm | 6374 | 2021-08-13 16:49:52 |
| R16.htm | 5487 | 2021-08-13 16:49:52 |
| R17.htm | 231743 | 2021-08-13 16:49:52 |
| R18.htm | 88755 | 2021-08-13 16:49:52 |
| R19.htm | 25846 | 2021-08-13 16:49:52 |
| R2.htm | 81788 | 2021-08-13 16:49:52 |
| R20.htm | 22173 | 2021-08-13 16:49:52 |
| R21.htm | 22564 | 2021-08-13 16:49:52 |
| R22.htm | 80948 | 2021-08-13 16:49:52 |
| R23.htm | 263243 | 2021-08-13 16:49:52 |
| R24.htm | 226814 | 2021-08-13 16:49:52 |
| R25.htm | 14768 | 2021-08-13 16:49:52 |
| R26.htm | 12529 | 2021-08-13 16:49:52 |
| R27.htm | 22838 | 2021-08-13 16:49:52 |
| R28.htm | 14987 | 2021-08-13 16:49:52 |
| R29.htm | 18887 | 2021-08-13 16:49:52 |
| R3.htm | 13039 | 2021-08-13 16:49:52 |
| R30.htm | 22833 | 2021-08-13 16:49:52 |
| R31.htm | 22436 | 2021-08-13 16:49:52 |
| R32.htm | 32079 | 2021-08-13 16:49:52 |
| R33.htm | 22863 | 2021-08-13 16:49:52 |
| R34.htm | 55521 | 2021-08-13 16:49:52 |
| R35.htm | 7826 | 2021-08-13 16:49:52 |
| R36.htm | 55197 | 2021-08-13 16:49:52 |
| R37.htm | 21714 | 2021-08-13 16:49:52 |
| R38.htm | 33749 | 2021-08-13 16:49:52 |
| R39.htm | 12364 | 2021-08-13 16:49:52 |
| R4.htm | 66116 | 2021-08-13 16:49:52 |
| R40.htm | 21390 | 2021-08-13 16:49:52 |
| R41.htm | 10300 | 2021-08-13 16:49:52 |
| R42.htm | 7195 | 2021-08-13 16:49:52 |
| R43.htm | 6185 | 2021-08-13 16:49:52 |
| R44.htm | 88592 | 2021-08-13 16:49:52 |
| R45.htm | 4835 | 2021-08-13 16:49:52 |
| R5.htm | 26324 | 2021-08-13 16:49:52 |
| R6.htm | 74739 | 2021-08-13 16:49:52 |
| R7.htm | 5844 | 2021-08-13 16:49:52 |
| R8.htm | 42108 | 2021-08-13 16:49:52 |
| R9.htm | 21524 | 2021-08-13 16:49:52 |
| report.css | 2767 | 2021-08-13 16:49:52 |
| Show.js | 1085 | 2021-08-13 16:49:52 |
| svt-20210630.xsd | 34611 | 2021-08-13 16:49:52 |
| svt-20210630x10q.htm | 1644911 | 2021-08-13 16:49:52 |
| svt-20210630x10q_htm.xml | 1765521 | 2021-08-13 16:49:52 |
| svt-20210630xex31d1.htm | 16022 | 2021-08-13 16:49:52 |
| svt-20210630xex31d2.htm | 16049 | 2021-08-13 16:49:52 |
| svt-20210630xex32d1.htm | 7328 | 2021-08-13 16:49:52 |
| svt-20210630xex32d2.htm | 7282 | 2021-08-13 16:49:52 |
| svt-20210630_cal.xml | 49705 | 2021-08-13 16:49:52 |
| svt-20210630_def.xml | 97866 | 2021-08-13 16:49:52 |
| svt-20210630_lab.xml | 288048 | 2021-08-13 16:49:52 |
| svt-20210630_pre.xml | 249164 | 2021-08-13 16:49:52 |