Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-18-194700-index-headers.html | 2018-06-15 17:48:53 | |
| 0001193125-18-194700-index.html | 2018-06-15 17:48:53 | |
| 0001193125-18-194700.txt | 2018-06-15 17:48:53 | |
 0001193125-18-194700-xbrl.zip | 73125 | 2018-06-15 17:48:53 |
 BarChart1.png | 29989 | 2018-06-15 17:48:53 |
| d596719d497.htm | 5569 | 2018-06-15 17:48:53 |
| FilingSummary.xml | 5957 | 2018-06-15 17:48:53 |
 g596719g0614071700564.jpg | 4085 | 2018-06-15 17:48:53 |
| ist-20180601.xml | 111575 | 2018-06-15 17:48:53 |
| ist-20180601.xsd | 17239 | 2018-06-15 17:48:53 |
| ist-20180601_cal.xml | 2818 | 2018-06-15 17:48:53 |
| ist-20180601_def.xml | 572312 | 2018-06-15 17:48:53 |
| ist-20180601_lab.xml | 149909 | 2018-06-15 17:48:53 |
| ist-20180601_pre.xml | 456546 | 2018-06-15 17:48:53 |
| R1.htm | 16185 | 2018-06-15 17:48:53 |
| R10.htm | 93518 | 2018-06-15 17:48:53 |
| R15.htm | 193016 | 2018-06-15 17:48:53 |
| R16.htm | 7477 | 2018-06-15 17:48:53 |
| R2.htm | 60159 | 2018-06-15 17:48:53 |
| R5.htm | 102723 | 2018-06-15 17:48:53 |
| R6.htm | 54408 | 2018-06-15 17:48:53 |
| R9.htm | 96976 | 2018-06-15 17:48:53 |
| report.css | 2767 | 2018-06-15 17:48:53 |
| Show.js | 1410 | 2018-06-15 17:48:53 |