Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001140361-19-019585-index-headers.html | 2019-11-01 10:25:30 | |
| 0001140361-19-019585-index.html | 2019-11-01 10:25:30 | |
| 0001140361-19-019585.txt | 2019-11-01 10:25:30 | |
 0001140361-19-019585-xbrl.zip | 575440 | 2019-11-01 10:25:30 |
| ex31_1.htm | 11830 | 2019-11-01 10:25:30 |
| ex31_2.htm | 11864 | 2019-11-01 10:25:30 |
| ex32_1.htm | 4369 | 2019-11-01 10:25:30 |
| ex32_2.htm | 4255 | 2019-11-01 10:25:30 |
| FilingSummary.xml | 43788 | 2019-11-01 10:25:30 |
| Financial_Report.xlsx | 149986 | 2019-11-01 10:25:30 |
| form10q.htm | 4577305 | 2019-11-01 10:25:30 |
| ibcp-20190930.xml | 8678187 | 2019-11-01 10:25:30 |
| ibcp-20190930.xsd | 97758 | 2019-11-01 10:25:30 |
| ibcp-20190930_cal.xml | 158945 | 2019-11-01 10:25:30 |
| ibcp-20190930_def.xml | 606874 | 2019-11-01 10:25:30 |
| ibcp-20190930_lab.xml | 1511407 | 2019-11-01 10:25:30 |
| ibcp-20190930_pre.xml | 856264 | 2019-11-01 10:25:30 |
| R1.htm | 30884 | 2019-11-01 10:25:30 |
| R10.htm | 15161 | 2019-11-01 10:25:30 |
| R11.htm | 207273 | 2019-11-01 10:25:30 |
| R12.htm | 1204808 | 2019-11-01 10:25:30 |
| R13.htm | 38410 | 2019-11-01 10:25:30 |
| R14.htm | 249730 | 2019-11-01 10:25:30 |
| R15.htm | 20480 | 2019-11-01 10:25:30 |
| R16.htm | 56991 | 2019-11-01 10:25:30 |
| R17.htm | 6799 | 2019-11-01 10:25:30 |
| R18.htm | 148089 | 2019-11-01 10:25:30 |
| R19.htm | 316112 | 2019-11-01 10:25:30 |
| R2.htm | 100474 | 2019-11-01 10:25:30 |
| R20.htm | 117616 | 2019-11-01 10:25:30 |
| R21.htm | 9216 | 2019-11-01 10:25:30 |
| R22.htm | 129414 | 2019-11-01 10:25:30 |
| R23.htm | 274957 | 2019-11-01 10:25:30 |
| R24.htm | 26955 | 2019-11-01 10:25:30 |
| R25.htm | 23411 | 2019-11-01 10:25:30 |
| R26.htm | 14547 | 2019-11-01 10:25:30 |
| R27.htm | 207552 | 2019-11-01 10:25:30 |
| R28.htm | 1212593 | 2019-11-01 10:25:30 |
| R29.htm | 36211 | 2019-11-01 10:25:30 |
| R3.htm | 18922 | 2019-11-01 10:25:30 |
| R30.htm | 247134 | 2019-11-01 10:25:30 |
| R31.htm | 22713 | 2019-11-01 10:25:30 |
| R32.htm | 60020 | 2019-11-01 10:25:30 |
| R33.htm | 146066 | 2019-11-01 10:25:30 |
| R34.htm | 311539 | 2019-11-01 10:25:30 |
| R35.htm | 115140 | 2019-11-01 10:25:30 |
| R36.htm | 129544 | 2019-11-01 10:25:30 |
| R37.htm | 270036 | 2019-11-01 10:25:30 |
| R38.htm | 29544 | 2019-11-01 10:25:30 |
| R39.htm | 20092 | 2019-11-01 10:25:30 |
| R4.htm | 99011 | 2019-11-01 10:25:30 |
| R40.htm | 23767 | 2019-11-01 10:25:30 |
| R41.htm | 244593 | 2019-11-01 10:25:30 |
| R42.htm | 20303 | 2019-11-01 10:25:30 |
| R43.htm | 99542 | 2019-11-01 10:25:30 |
| R44.htm | 148192 | 2019-11-01 10:25:30 |
| R45.htm | 180287 | 2019-11-01 10:25:30 |
| R46.htm | 102676 | 2019-11-01 10:25:30 |
| R47.htm | 39174 | 2019-11-01 10:25:30 |
| R48.htm | 152964 | 2019-11-01 10:25:30 |
| R49.htm | 36134 | 2019-11-01 10:25:30 |
| R5.htm | 46778 | 2019-11-01 10:25:30 |
| R50.htm | 54610 | 2019-11-01 10:25:30 |
| R51.htm | 78066 | 2019-11-01 10:25:30 |
| R52.htm | 52999 | 2019-11-01 10:25:30 |
| R53.htm | 26866 | 2019-11-01 10:25:30 |
| R54.htm | 40267 | 2019-11-01 10:25:30 |
| R55.htm | 49714 | 2019-11-01 10:25:30 |
| R56.htm | 24962 | 2019-11-01 10:25:30 |
| R57.htm | 10595 | 2019-11-01 10:25:30 |
| R58.htm | 10466 | 2019-11-01 10:25:30 |
| R59.htm | 117056 | 2019-11-01 10:25:30 |
| R6.htm | 112295 | 2019-11-01 10:25:30 |
| R60.htm | 198198 | 2019-11-01 10:25:30 |
| R61.htm | 30223 | 2019-11-01 10:25:30 |
| R62.htm | 20123 | 2019-11-01 10:25:30 |
| R63.htm | 89335 | 2019-11-01 10:25:30 |
| R64.htm | 8325 | 2019-11-01 10:25:30 |
| R65.htm | 76791 | 2019-11-01 10:25:30 |
| R66.htm | 20376 | 2019-11-01 10:25:30 |
| R67.htm | 30601 | 2019-11-01 10:25:30 |
| R68.htm | 28037 | 2019-11-01 10:25:30 |
| R69.htm | 54757 | 2019-11-01 10:25:30 |
| R7.htm | 41980 | 2019-11-01 10:25:30 |
| R70.htm | 41554 | 2019-11-01 10:25:30 |
| R71.htm | 69968 | 2019-11-01 10:25:30 |
| R8.htm | 15823 | 2019-11-01 10:25:30 |
| R9.htm | 8227 | 2019-11-01 10:25:30 |
| report.css | 2767 | 2019-11-01 10:25:30 |
| Show.js | 1085 | 2019-11-01 10:25:30 |