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|---|---|---|
 0001193125-18-014964-index-headers.html | 2018-01-19 18:50:13 | |
| 0001193125-18-014964-index.html | 2018-01-19 18:50:13 | |
| 0001193125-18-014964.txt | 2018-01-19 18:50:13 | |
 0001193125-18-014964-xbrl.zip | 39946 | 2018-01-19 18:50:13 |
 BarChart1.png | 9278 | 2018-01-19 18:50:13 |
| d499949d497.htm | 4821 | 2018-01-19 18:50:13 |
| FilingSummary.xml | 3557 | 2018-01-19 18:50:13 |
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| ist-20180108.xml | 48879 | 2018-01-19 18:50:13 |
| ist-20180108.xsd | 8024 | 2018-01-19 18:50:13 |
| ist-20180108_cal.xml | 4724 | 2018-01-19 18:50:13 |
| ist-20180108_def.xml | 210268 | 2018-01-19 18:50:13 |
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| R2.htm | 81629 | 2018-01-19 18:50:13 |
| R7.htm | 162834 | 2018-01-19 18:50:13 |
| R8.htm | 7476 | 2018-01-19 18:50:13 |
| report.css | 2767 | 2018-01-19 18:50:13 |
| Show.js | 1410 | 2018-01-19 18:50:13 |