Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-041013-index-headers.html | 2020-02-18 19:44:11 | |
| 0001193125-20-041013-index.html | 2020-02-18 19:44:11 | |
| 0001193125-20-041013.txt | 2020-02-18 19:44:11 | |
 0001193125-20-041013-xbrl.zip | 41295 | 2020-02-18 19:44:11 |
| d880385d497.htm | 4926 | 2020-02-18 19:44:11 |
| FilingSummary.xml | 3478 | 2020-02-18 19:44:11 |
 g880385g0213044628270.jpg | 4043 | 2020-02-18 19:44:11 |
| ist-20200204.xml | 40847 | 2020-02-18 19:44:11 |
| ist-20200204.xsd | 7826 | 2020-02-18 19:44:11 |
| ist-20200204_cal.xml | 4750 | 2020-02-18 19:44:11 |
| ist-20200204_def.xml | 216529 | 2020-02-18 19:44:11 |
| ist-20200204_lab.xml | 139064 | 2020-02-18 19:44:11 |
| ist-20200204_pre.xml | 166279 | 2020-02-18 19:44:11 |
| R1.htm | 18247 | 2020-02-18 19:44:11 |
| R2.htm | 65754 | 2020-02-18 19:44:11 |
| R5.htm | 100809 | 2020-02-18 19:44:11 |
| R6.htm | 7480 | 2020-02-18 19:44:11 |
| report.css | 2767 | 2020-02-18 19:44:11 |
| Show.js | 1085 | 2020-02-18 19:44:11 |