Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001683863-20-002159-index-headers.html | 2020-04-03 19:22:24 | |
| 0001683863-20-002159-index.html | 2020-04-03 19:22:24 | |
| 0001683863-20-002159.txt | 2020-04-03 19:22:24 | |
 0001683863-20-002159-xbrl.zip | 69228 | 2020-04-03 19:22:24 |
 BarChart1.png | 14717 | 2020-04-03 19:22:24 |
 BarChart2.png | 18032 | 2020-04-03 19:22:24 |
| f3101d1.htm | 10012 | 2020-04-03 19:22:24 |
| FilingSummary.xml | 5008 | 2020-04-03 19:22:24 |
 g202004030250355690.jpg | 4043 | 2020-04-03 19:22:24 |
| isust-20200320.xml | 108410 | 2020-04-03 19:22:24 |
| isust-20200320.xsd | 13520 | 2020-04-03 19:22:24 |
| isust-20200320_cal.xml | 4752 | 2020-04-03 19:22:24 |
| isust-20200320_def.xml | 406513 | 2020-04-03 19:22:24 |
| isust-20200320_lab.xml | 150099 | 2020-04-03 19:22:24 |
| isust-20200320_pre.xml | 312810 | 2020-04-03 19:22:24 |
| R1.htm | 18248 | 2020-04-03 19:22:24 |
| R13.htm | 178916 | 2020-04-03 19:22:24 |
| R14.htm | 7484 | 2020-04-03 19:22:24 |
| R2.htm | 93667 | 2020-04-03 19:22:24 |
| R7.htm | 177157 | 2020-04-03 19:22:24 |
| R8.htm | 92218 | 2020-04-03 19:22:24 |
| report.css | 2767 | 2020-04-03 19:22:24 |
| Show.js | 1085 | 2020-04-03 19:22:24 |