Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-319239-index-headers.html | 2020-12-16 19:24:37 | |
| 0001193125-20-319239-index.html | 2020-12-16 19:24:37 | |
| 0001193125-20-319239.txt | 2020-12-16 19:24:37 | |
 0001193125-20-319239-xbrl.zip | 87698 | 2020-12-16 19:24:37 |
 BarChart1.png | 9610 | 2020-12-16 19:24:37 |
 BarChart2.png | 8810 | 2020-12-16 19:24:37 |
 BarChart3.png | 9675 | 2020-12-16 19:24:37 |
| d51260d497.htm | 5706 | 2020-12-16 19:24:37 |
| FilingSummary.xml | 6118 | 2020-12-16 19:24:37 |
 g51260g92k51.jpg | 3982 | 2020-12-16 19:24:37 |
| isust-20201202.xml | 135219 | 2020-12-16 19:24:37 |
| isust-20201202.xsd | 18215 | 2020-12-16 19:24:37 |
| isust-20201202_cal.xml | 4752 | 2020-12-16 19:24:37 |
| isust-20201202_def.xml | 597048 | 2020-12-16 19:24:37 |
| isust-20201202_lab.xml | 152972 | 2020-12-16 19:24:37 |
| isust-20201202_pre.xml | 459622 | 2020-12-16 19:24:37 |
| R1.htm | 18255 | 2020-12-16 19:24:37 |
| R13.htm | 151449 | 2020-12-16 19:24:37 |
| R14.htm | 88408 | 2020-12-16 19:24:37 |
| R19.htm | 162563 | 2020-12-16 19:24:37 |
| R2.htm | 88835 | 2020-12-16 19:24:37 |
| R20.htm | 3937 | 2020-12-16 19:24:37 |
| R7.htm | 162983 | 2020-12-16 19:24:37 |
| R8.htm | 80846 | 2020-12-16 19:24:37 |
| report.css | 2767 | 2020-12-16 19:24:37 |
| Show.js | 1085 | 2020-12-16 19:24:37 |