Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-21-097003-index-headers.html | 2021-03-26 20:08:32 | |
| 0001193125-21-097003-index.html | 2021-03-26 20:08:32 | |
| 0001193125-21-097003.txt | 2021-03-26 20:08:32 | |
 0001193125-21-097003-xbrl.zip | 25222 | 2021-03-26 20:08:32 |
| d157313d497.htm | 5646 | 2021-03-26 20:08:32 |
| FilingSummary.xml | 3513 | 2021-03-26 20:08:32 |
| Financial_Report.xlsx | 9722 | 2021-03-26 20:08:32 |
 g157313g79e56.jpg | 5206 | 2021-03-26 20:08:32 |
| ist-20210312.xml | 27431 | 2021-03-26 20:08:32 |
| ist-20210312.xsd | 3976 | 2021-03-26 20:08:32 |
| ist-20210312_def.xml | 91698 | 2021-03-26 20:08:32 |
| ist-20210312_lab.xml | 127656 | 2021-03-26 20:08:32 |
| ist-20210312_pre.xml | 78280 | 2021-03-26 20:08:32 |
| R1.htm | 18245 | 2021-03-26 20:08:32 |
| R2.htm | 12916 | 2021-03-26 20:08:32 |
| R3.htm | 30800 | 2021-03-26 20:08:32 |
| R4.htm | 3937 | 2021-03-26 20:08:32 |
| report.css | 2767 | 2021-03-26 20:08:32 |
| Show.js | 1085 | 2021-03-26 20:08:32 |