Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-18-047446-index-headers.html | 2018-02-15 17:43:32 | |
| 0001193125-18-047446-index.html | 2018-02-15 17:43:32 | |
| 0001193125-18-047446.txt | 2018-02-15 17:43:32 | |
 0001193125-18-047446-xbrl.zip | 41893 | 2018-02-15 17:43:32 |
 BarChart1.png | 10904 | 2018-02-15 17:43:32 |
| d531363d497.htm | 4822 | 2018-02-15 17:43:32 |
| FilingSummary.xml | 3624 | 2018-02-15 17:43:32 |
 g531363g84s22.jpg | 11005 | 2018-02-15 17:43:32 |
| ist-20180205.xml | 56387 | 2018-02-15 17:43:32 |
| ist-20180205.xsd | 8035 | 2018-02-15 17:43:32 |
| ist-20180205_cal.xml | 4782 | 2018-02-15 17:43:32 |
| ist-20180205_def.xml | 213820 | 2018-02-15 17:43:32 |
| ist-20180205_lab.xml | 138393 | 2018-02-15 17:43:32 |
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| R1.htm | 16183 | 2018-02-15 17:43:32 |
| R2.htm | 88236 | 2018-02-15 17:43:32 |
| R7.htm | 181451 | 2018-02-15 17:43:32 |
| R8.htm | 7475 | 2018-02-15 17:43:32 |
| report.css | 2767 | 2018-02-15 17:43:32 |
| Show.js | 1410 | 2018-02-15 17:43:32 |