Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-18-358247-index-headers.html | 2018-12-26 18:34:18 | |
| 0001193125-18-358247-index.html | 2018-12-26 18:34:18 | |
| 0001193125-18-358247.txt | 2018-12-26 18:34:18 | |
 0001193125-18-358247-xbrl.zip | 40033 | 2018-12-26 18:34:18 |
 BarChart1.png | 20556 | 2018-12-26 18:34:18 |
| d673664d497.htm | 5271 | 2018-12-26 18:34:18 |
| FilingSummary.xml | 3523 | 2018-12-26 18:34:18 |
 g673664673664_004.jpg | 9644 | 2018-12-26 18:34:18 |
| ist-20181212.xml | 46622 | 2018-12-26 18:34:18 |
| ist-20181212.xsd | 8053 | 2018-12-26 18:34:18 |
| ist-20181212_cal.xml | 4750 | 2018-12-26 18:34:18 |
| ist-20181212_def.xml | 206589 | 2018-12-26 18:34:18 |
| ist-20181212_lab.xml | 144078 | 2018-12-26 18:34:18 |
| ist-20181212_pre.xml | 159213 | 2018-12-26 18:34:18 |
| R1.htm | 18241 | 2018-12-26 18:34:18 |
| R2.htm | 86723 | 2018-12-26 18:34:18 |
| R7.htm | 165617 | 2018-12-26 18:34:18 |
| R8.htm | 7477 | 2018-12-26 18:34:18 |
| report.css | 2767 | 2018-12-26 18:34:18 |
| Show.js | 1085 | 2018-12-26 18:34:18 |