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| 0000727634-16-000040-index.html | 2016-04-06 16:11:30 | |
| 0000727634-16-000040.txt | 2016-04-06 16:11:30 | |
 0000727634-16-000040-xbrl.zip | 163772 | 2016-04-06 16:11:30 |
| cert_ceocert302.htm | 6316 | 2016-04-06 16:11:30 |
| cert_ceocert906.htm | 3480 | 2016-04-06 16:11:30 |
| cert_cfocert302.htm | 6020 | 2016-04-06 16:11:30 |
| cert_cfocert906.htm | 3452 | 2016-04-06 16:11:30 |
| consent_account.htm | 4805 | 2016-04-06 16:11:30 |
| FilingSummary.xml | 38173 | 2016-04-06 16:11:30 |
| Financial_Report.xlsx | 79226 | 2016-04-06 16:11:30 |
| fm_10k123115.htm | 1638641 | 2016-04-06 16:11:30 |
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| isgn-20151231.xml | 424130 | 2016-04-06 16:11:30 |
| isgn-20151231.xsd | 91301 | 2016-04-06 16:11:30 |
| isgn-20151231_cal.xml | 60372 | 2016-04-06 16:11:30 |
| isgn-20151231_def.xml | 263642 | 2016-04-06 16:11:30 |
| isgn-20151231_lab.xml | 1234777 | 2016-04-06 16:11:30 |
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| report.css | 2767 | 2016-04-06 16:11:30 |
| sch_subsidiaries.htm | 1230 | 2016-04-06 16:11:30 |
| Show.js | 1410 | 2016-04-06 16:11:30 |