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| 0001193125-20-073207-index.html | 2020-03-13 19:39:42 | |
| 0001193125-20-073207.txt | 2020-03-13 19:39:42 | |
 0001193125-20-073207-xbrl.zip | 147747 | 2020-03-13 19:39:42 |
 BarChart1.png | 22590 | 2020-03-13 19:39:42 |
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| d830710d485bpos.htm | 34100 | 2020-03-13 19:39:42 |
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| isi-20200224.xml | 252247 | 2020-03-13 19:39:42 |
| isi-20200224.xsd | 28747 | 2020-03-13 19:39:42 |
| isi-20200224_cal.xml | 2088 | 2020-03-13 19:39:42 |
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| R1.htm | 18243 | 2020-03-13 19:39:42 |
| R13.htm | 174072 | 2020-03-13 19:39:42 |
| R14.htm | 96808 | 2020-03-13 19:39:42 |
| R19.htm | 182072 | 2020-03-13 19:39:42 |
| R2.htm | 92359 | 2020-03-13 19:39:42 |
| R20.htm | 96448 | 2020-03-13 19:39:42 |
| R25.htm | 178197 | 2020-03-13 19:39:42 |
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| R31.htm | 170383 | 2020-03-13 19:39:42 |
| R32.htm | 7475 | 2020-03-13 19:39:42 |
| R7.htm | 171403 | 2020-03-13 19:39:42 |
| R8.htm | 94991 | 2020-03-13 19:39:42 |
| report.css | 2767 | 2020-03-13 19:39:42 |
| Show.js | 1085 | 2020-03-13 19:39:42 |