Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001654954-23-002601-index-headers.html | 2023-03-09 15:15:55 | |
| 0001654954-23-002601-index.html | 2023-03-09 15:15:55 | |
| 0001654954-23-002601.txt | 2023-03-09 15:15:55 | |
 0001654954-23-002601-xbrl.zip | 127821 | 2023-03-09 15:15:55 |
| FilingSummary.xml | 30247 | 2023-03-09 15:15:55 |
| Financial_Report.xlsx | 64727 | 2023-03-09 15:15:55 |
| isig-20221231.xsd | 36296 | 2023-03-09 15:15:55 |
| isig-20221231_cal.xml | 45426 | 2023-03-09 15:15:55 |
| isig-20221231_def.xml | 106922 | 2023-03-09 15:15:55 |
| isig-20221231_lab.xml | 302004 | 2023-03-09 15:15:55 |
| isig-20221231_pre.xml | 240803 | 2023-03-09 15:15:55 |
| isig_10k.htm | 833885 | 2023-03-09 15:15:55 |
| isig_10k_htm.xml | 690931 | 2023-03-09 15:15:55 |
| isig_ex231.htm | 3029 | 2023-03-09 15:15:55 |
| isig_ex311.htm | 12635 | 2023-03-09 15:15:55 |
| isig_ex312.htm | 10229 | 2023-03-09 15:15:55 |
| isig_ex32.htm | 5267 | 2023-03-09 15:15:55 |
| MetaLinks.json | 507561 | 2023-03-09 15:15:55 |
| R1.htm | 64257 | 2023-03-09 15:15:55 |
| R10.htm | 36768 | 2023-03-09 15:15:55 |
| R11.htm | 7331 | 2023-03-09 15:15:55 |
| R12.htm | 80692 | 2023-03-09 15:15:55 |
| R13.htm | 50701 | 2023-03-09 15:15:55 |
| R14.htm | 8618 | 2023-03-09 15:15:55 |
| R15.htm | 5525 | 2023-03-09 15:15:55 |
| R16.htm | 9120 | 2023-03-09 15:15:55 |
| R17.htm | 87266 | 2023-03-09 15:15:55 |
| R18.htm | 29123 | 2023-03-09 15:15:55 |
| R19.htm | 14286 | 2023-03-09 15:15:55 |
| R2.htm | 99885 | 2023-03-09 15:15:55 |
| R20.htm | 15714 | 2023-03-09 15:15:55 |
| R21.htm | 34927 | 2023-03-09 15:15:55 |
| R22.htm | 80897 | 2023-03-09 15:15:55 |
| R23.htm | 52100 | 2023-03-09 15:15:55 |
| R24.htm | 10641 | 2023-03-09 15:15:55 |
| R25.htm | 14582 | 2023-03-09 15:15:55 |
| R26.htm | 13477 | 2023-03-09 15:15:55 |
| R27.htm | 10577 | 2023-03-09 15:15:55 |
| R28.htm | 15282 | 2023-03-09 15:15:55 |
| R29.htm | 13224 | 2023-03-09 15:15:55 |
| R3.htm | 10591 | 2023-03-09 15:15:55 |
| R30.htm | 7463 | 2023-03-09 15:15:55 |
| R31.htm | 11401 | 2023-03-09 15:15:55 |
| R32.htm | 17171 | 2023-03-09 15:15:55 |
| R33.htm | 4715 | 2023-03-09 15:15:55 |
| R34.htm | 20029 | 2023-03-09 15:15:55 |
| R35.htm | 16351 | 2023-03-09 15:15:55 |
| R36.htm | 15474 | 2023-03-09 15:15:55 |
| R37.htm | 6051 | 2023-03-09 15:15:55 |
| R38.htm | 9575 | 2023-03-09 15:15:55 |
| R39.htm | 11366 | 2023-03-09 15:15:55 |
| R4.htm | 78840 | 2023-03-09 15:15:55 |
| R40.htm | 36686 | 2023-03-09 15:15:55 |
| R41.htm | 23525 | 2023-03-09 15:15:55 |
| R42.htm | 22176 | 2023-03-09 15:15:55 |
| R43.htm | 29192 | 2023-03-09 15:15:55 |
| R44.htm | 11798 | 2023-03-09 15:15:55 |
| R45.htm | 19634 | 2023-03-09 15:15:55 |
| R46.htm | 30070 | 2023-03-09 15:15:55 |
| R47.htm | 8683 | 2023-03-09 15:15:55 |
| R48.htm | 15040 | 2023-03-09 15:15:55 |
| R49.htm | 5987 | 2023-03-09 15:15:55 |
| R5.htm | 34623 | 2023-03-09 15:15:55 |
| R50.htm | 12654 | 2023-03-09 15:15:55 |
| R51.htm | 9267 | 2023-03-09 15:15:55 |
| R6.htm | 80285 | 2023-03-09 15:15:55 |
| R7.htm | 44153 | 2023-03-09 15:15:55 |
| R8.htm | 23428 | 2023-03-09 15:15:55 |
| R9.htm | 17204 | 2023-03-09 15:15:55 |
| report.css | 2767 | 2023-03-09 15:15:55 |
| Show.js | 1085 | 2023-03-09 15:15:55 |