Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000776901-21-000259-index-headers.html | 2021-11-04 16:25:04 | |
| 0000776901-21-000259-index.html | 2021-11-04 16:25:04 | |
| 0000776901-21-000259.txt | 2021-11-04 16:25:04 | |
 0000776901-21-000259-xbrl.zip | 1409760 | 2021-11-04 16:25:04 |
| exhibit311-indb0930202110x.htm | 9997 | 2021-11-04 16:25:04 |
| exhibit312-indb09x30x20211.htm | 10025 | 2021-11-04 16:25:04 |
| exhibit321-indb09x30x20211.htm | 6211 | 2021-11-04 16:25:04 |
| exhibit322-indb09x30x20211.htm | 5742 | 2021-11-04 16:25:04 |
| exhibit991-derivativeaction.htm | 2622 | 2021-11-04 16:25:04 |
| FilingSummary.xml | 42702 | 2021-11-04 16:25:04 |
| Financial_Report.xlsx | 159086 | 2021-11-04 16:25:04 |
| indb-20210930.htm | 5874329 | 2021-11-04 16:25:04 |
| indb-20210930.xsd | 72436 | 2021-11-04 16:25:04 |
| indb-20210930_cal.xml | 153233 | 2021-11-04 16:25:04 |
| indb-20210930_def.xml | 636142 | 2021-11-04 16:25:04 |
 indb-20210930_g1.jpg | 146705 | 2021-11-04 16:25:04 |
 indb-20210930_g2.jpg | 132328 | 2021-11-04 16:25:04 |
 indb-20210930_g3.jpg | 101430 | 2021-11-04 16:25:04 |
 indb-20210930_g4.jpg | 151447 | 2021-11-04 16:25:04 |
 indb-20210930_g5.jpg | 104824 | 2021-11-04 16:25:04 |
 indb-20210930_g6.jpg | 116693 | 2021-11-04 16:25:04 |
 indb-20210930_g7.jpg | 144333 | 2021-11-04 16:25:04 |
 indb-20210930_g8.jpg | 111560 | 2021-11-04 16:25:04 |
 indb-20210930_g9.jpg | 90168 | 2021-11-04 16:25:04 |
| indb-20210930_htm.xml | 6278890 | 2021-11-04 16:25:04 |
| indb-20210930_lab.xml | 1021028 | 2021-11-04 16:25:04 |
| indb-20210930_pre.xml | 776031 | 2021-11-04 16:25:04 |
| MetaLinks.json | 980463 | 2021-11-04 16:25:04 |
| R1.htm | 70678 | 2021-11-04 16:25:04 |
| R10.htm | 17248 | 2021-11-04 16:25:04 |
| R11.htm | 21259 | 2021-11-04 16:25:04 |
| R12.htm | 7391 | 2021-11-04 16:25:04 |
| R13.htm | 6695 | 2021-11-04 16:25:04 |
| R14.htm | 293828 | 2021-11-04 16:25:04 |
| R15.htm | 753630 | 2021-11-04 16:25:04 |
| R16.htm | 16223 | 2021-11-04 16:25:04 |
| R17.htm | 207110 | 2021-11-04 16:25:04 |
| R18.htm | 204739 | 2021-11-04 16:25:04 |
| R19.htm | 55113 | 2021-11-04 16:25:04 |
| R2.htm | 200782 | 2021-11-04 16:25:04 |
| R20.htm | 114749 | 2021-11-04 16:25:04 |
| R21.htm | 18499 | 2021-11-04 16:25:04 |
| R22.htm | 5115 | 2021-11-04 16:25:04 |
| R23.htm | 7036 | 2021-11-04 16:25:04 |
| R24.htm | 289201 | 2021-11-04 16:25:04 |
| R25.htm | 741762 | 2021-11-04 16:25:04 |
| R26.htm | 14359 | 2021-11-04 16:25:04 |
| R27.htm | 198821 | 2021-11-04 16:25:04 |
| R28.htm | 189922 | 2021-11-04 16:25:04 |
| R29.htm | 35501 | 2021-11-04 16:25:04 |
| R3.htm | 30751 | 2021-11-04 16:25:04 |
| R30.htm | 116364 | 2021-11-04 16:25:04 |
| R31.htm | 10969 | 2021-11-04 16:25:04 |
| R32.htm | 9782 | 2021-11-04 16:25:04 |
| R33.htm | 44836 | 2021-11-04 16:25:04 |
| R34.htm | 51395 | 2021-11-04 16:25:04 |
| R35.htm | 37298 | 2021-11-04 16:25:04 |
| R36.htm | 163580 | 2021-11-04 16:25:04 |
| R37.htm | 35410 | 2021-11-04 16:25:04 |
| R38.htm | 118226 | 2021-11-04 16:25:04 |
| R39.htm | 294661 | 2021-11-04 16:25:04 |
| R4.htm | 128071 | 2021-11-04 16:25:04 |
| R40.htm | 13041 | 2021-11-04 16:25:04 |
| R41.htm | 36266 | 2021-11-04 16:25:04 |
| R42.htm | 6626 | 2021-11-04 16:25:04 |
| R43.htm | 140940 | 2021-11-04 16:25:04 |
| R44.htm | 29305 | 2021-11-04 16:25:04 |
| R45.htm | 29485 | 2021-11-04 16:25:04 |
| R46.htm | 22572 | 2021-11-04 16:25:04 |
| R47.htm | 67121 | 2021-11-04 16:25:04 |
| R48.htm | 20949 | 2021-11-04 16:25:04 |
| R49.htm | 13979 | 2021-11-04 16:25:04 |
| R5.htm | 122118 | 2021-11-04 16:25:04 |
| R50.htm | 45469 | 2021-11-04 16:25:04 |
| R51.htm | 48762 | 2021-11-04 16:25:04 |
| R52.htm | 82196 | 2021-11-04 16:25:04 |
| R53.htm | 34077 | 2021-11-04 16:25:04 |
| R54.htm | 48137 | 2021-11-04 16:25:04 |
| R55.htm | 100070 | 2021-11-04 16:25:04 |
| R56.htm | 112114 | 2021-11-04 16:25:04 |
| R57.htm | 31660 | 2021-11-04 16:25:04 |
| R58.htm | 4206 | 2021-11-04 16:25:04 |
| R59.htm | 196981 | 2021-11-04 16:25:04 |
| R6.htm | 126939 | 2021-11-04 16:25:04 |
| R60.htm | 25723 | 2021-11-04 16:25:04 |
| R61.htm | 12760 | 2021-11-04 16:25:04 |
| R62.htm | 9685 | 2021-11-04 16:25:04 |
| R63.htm | 9984 | 2021-11-04 16:25:04 |
| R7.htm | 26496 | 2021-11-04 16:25:04 |
| R8.htm | 128799 | 2021-11-04 16:25:04 |
| R9.htm | 17860 | 2021-11-04 16:25:04 |
| report.css | 2767 | 2021-11-04 16:25:04 |
| Show.js | 1085 | 2021-11-04 16:25:04 |