Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-082345-index-headers.html | 2019-03-21 17:53:14 | |
| 0001193125-19-082345-index.html | 2019-03-21 17:53:14 | |
| 0001193125-19-082345.txt | 2019-03-21 17:53:14 | |
 0001193125-19-082345-xbrl.zip | 38227 | 2019-03-21 17:53:14 |
| d632421d485bpos.htm | 30586 | 2019-03-21 17:53:14 |
| FilingSummary.xml | 3480 | 2019-03-21 17:53:14 |
| ist-20190314.xml | 30132 | 2019-03-21 17:53:14 |
| ist-20190314.xsd | 7841 | 2019-03-21 17:53:14 |
| ist-20190314_cal.xml | 4750 | 2019-03-21 17:53:14 |
| ist-20190314_def.xml | 216664 | 2019-03-21 17:53:14 |
| ist-20190314_lab.xml | 139068 | 2019-03-21 17:53:14 |
| ist-20190314_pre.xml | 166300 | 2019-03-21 17:53:14 |
| R1.htm | 18242 | 2019-03-21 17:53:14 |
| R2.htm | 55253 | 2019-03-21 17:53:14 |
| R5.htm | 90381 | 2019-03-21 17:53:14 |
| R6.htm | 7474 | 2019-03-21 17:53:14 |
| report.css | 2767 | 2019-03-21 17:53:14 |
| Show.js | 1085 | 2019-03-21 17:53:14 |