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| 0001193125-16-672203-index.html | 2016-08-04 19:15:54 | |
| 0001193125-16-672203.txt | 2016-08-04 19:15:54 | |
 0001193125-16-672203-xbrl.zip | 114423 | 2016-08-04 19:15:54 |
 BarChart1.png | 7204 | 2016-08-04 19:15:54 |
 BarChart2.png | 6858 | 2016-08-04 19:15:54 |
| d208030d497.htm | 5642 | 2016-08-04 19:15:54 |
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 g208030vsnap2.jpg | 4651 | 2016-08-04 19:15:54 |
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| isust-20160721_cal.xml | 3197 | 2016-08-04 19:15:54 |
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| R1.htm | 16193 | 2016-08-04 19:15:54 |
| R11.htm | 166420 | 2016-08-04 19:15:54 |
| R12.htm | 65301 | 2016-08-04 19:15:54 |
| R15.htm | 112065 | 2016-08-04 19:15:54 |
| R16.htm | 80226 | 2016-08-04 19:15:54 |
| R2.htm | 63772 | 2016-08-04 19:15:54 |
| R21.htm | 166389 | 2016-08-04 19:15:54 |
| R22.htm | 7485 | 2016-08-04 19:15:54 |
| R5.htm | 108069 | 2016-08-04 19:15:54 |
| R6.htm | 80255 | 2016-08-04 19:15:54 |
| report.css | 2767 | 2016-08-04 19:15:54 |
| Show.js | 1410 | 2016-08-04 19:15:54 |