Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-217049-index-headers.html | 2019-08-08 17:45:50 | |
| 0001193125-19-217049-index.html | 2019-08-08 17:45:50 | |
| 0001193125-19-217049.txt | 2019-08-08 17:45:50 | |
 0001193125-19-217049-xbrl.zip | 69533 | 2019-08-08 17:45:50 |
 BarChart1.png | 10651 | 2019-08-08 17:45:50 |
 BarChart2.png | 7292 | 2019-08-08 17:45:50 |
| d767886d497.htm | 5670 | 2019-08-08 17:45:50 |
| FilingSummary.xml | 4812 | 2019-08-08 17:45:50 |
 g767886snap0001.jpg | 4820 | 2019-08-08 17:45:50 |
| ist-20190725.xml | 111212 | 2019-08-08 17:45:50 |
| ist-20190725.xsd | 13652 | 2019-08-08 17:45:50 |
| ist-20190725_cal.xml | 4750 | 2019-08-08 17:45:50 |
| ist-20190725_def.xml | 401650 | 2019-08-08 17:45:50 |
| ist-20190725_lab.xml | 152281 | 2019-08-08 17:45:50 |
| ist-20190725_pre.xml | 309417 | 2019-08-08 17:45:50 |
| R1.htm | 18238 | 2019-08-08 17:45:50 |
| R13.htm | 164171 | 2019-08-08 17:45:50 |
| R14.htm | 7475 | 2019-08-08 17:45:50 |
| R2.htm | 95519 | 2019-08-08 17:45:50 |
| R7.htm | 188334 | 2019-08-08 17:45:50 |
| R8.htm | 79167 | 2019-08-08 17:45:50 |
| report.css | 2767 | 2019-08-08 17:45:50 |
| Show.js | 1085 | 2019-08-08 17:45:50 |