Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104659-26-020439-index-headers.html | 2026-02-26 15:23:29 | |
| 0001104659-26-020439-index.html | 2026-02-26 15:23:29 | |
| 0001104659-26-020439.txt | 2026-02-26 15:23:29 | |
 0001104659-26-020439-xbrl.zip | 644573 | 2026-02-26 15:23:29 |
| FilingSummary.xml | 62721 | 2026-02-26 15:23:29 |
| iboc-20251231.xsd | 94338 | 2026-02-26 15:23:29 |
| iboc-20251231x10k.htm | 825816 | 2026-02-26 15:23:29 |
| iboc-20251231x10k_htm.xml | 7953394 | 2026-02-26 15:23:29 |
| iboc-20251231xex13.htm | 6621224 | 2026-02-26 15:23:29 |
 iboc-20251231xex13006.jpg | 40593 | 2026-02-26 15:23:29 |
| iboc-20251231xex21.htm | 39683 | 2026-02-26 15:23:29 |
| iboc-20251231xex23.htm | 2138 | 2026-02-26 15:23:29 |
| iboc-20251231xex31da.htm | 14081 | 2026-02-26 15:23:29 |
| iboc-20251231xex31db.htm | 13875 | 2026-02-26 15:23:29 |
| iboc-20251231xex32da.htm | 8175 | 2026-02-26 15:23:29 |
| iboc-20251231xex32db.htm | 8174 | 2026-02-26 15:23:29 |
| iboc-20251231xex4.htm | 18457 | 2026-02-26 15:23:29 |
| iboc-20251231_cal.xml | 135409 | 2026-02-26 15:23:29 |
| iboc-20251231_def.xml | 444978 | 2026-02-26 15:23:29 |
| iboc-20251231_lab.xml | 906171 | 2026-02-26 15:23:29 |
| iboc-20251231_pre.xml | 701440 | 2026-02-26 15:23:29 |
| MetaLinks.json | 1387868 | 2026-02-26 15:23:29 |
| R1.htm | 70637 | 2026-02-26 15:23:29 |
| R10.htm | 47953 | 2026-02-26 15:23:29 |
| R11.htm | 282603 | 2026-02-26 15:23:29 |
| R12.htm | 23869 | 2026-02-26 15:23:29 |
| R13.htm | 1307772 | 2026-02-26 15:23:29 |
| R14.htm | 33209 | 2026-02-26 15:23:29 |
| R15.htm | 107858 | 2026-02-26 15:23:29 |
| R16.htm | 55267 | 2026-02-26 15:23:29 |
| R17.htm | 34536 | 2026-02-26 15:23:29 |
| R18.htm | 60122 | 2026-02-26 15:23:29 |
| R19.htm | 51014 | 2026-02-26 15:23:29 |
| R2.htm | 120891 | 2026-02-26 15:23:29 |
| R20.htm | 6176 | 2026-02-26 15:23:29 |
| R21.htm | 25133 | 2026-02-26 15:23:29 |
| R22.htm | 121031 | 2026-02-26 15:23:29 |
| R23.htm | 118122 | 2026-02-26 15:23:29 |
| R24.htm | 6763 | 2026-02-26 15:23:29 |
| R25.htm | 10920 | 2026-02-26 15:23:29 |
| R26.htm | 15126 | 2026-02-26 15:23:29 |
| R27.htm | 309605 | 2026-02-26 15:23:29 |
| R28.htm | 245284 | 2026-02-26 15:23:29 |
| R29.htm | 54166 | 2026-02-26 15:23:29 |
| R3.htm | 16894 | 2026-02-26 15:23:29 |
| R30.htm | 54133 | 2026-02-26 15:23:29 |
| R31.htm | 74700 | 2026-02-26 15:23:29 |
| R32.htm | 17876 | 2026-02-26 15:23:29 |
| R33.htm | 11480 | 2026-02-26 15:23:29 |
| R34.htm | 4371 | 2026-02-26 15:23:29 |
| R35.htm | 93112 | 2026-02-26 15:23:29 |
| R36.htm | 109718 | 2026-02-26 15:23:29 |
| R37.htm | 275865 | 2026-02-26 15:23:29 |
| R38.htm | 23659 | 2026-02-26 15:23:29 |
| R39.htm | 1286977 | 2026-02-26 15:23:29 |
| R4.htm | 137583 | 2026-02-26 15:23:29 |
| R40.htm | 32116 | 2026-02-26 15:23:29 |
| R41.htm | 108540 | 2026-02-26 15:23:29 |
| R42.htm | 52913 | 2026-02-26 15:23:29 |
| R43.htm | 32277 | 2026-02-26 15:23:29 |
| R44.htm | 56721 | 2026-02-26 15:23:29 |
| R45.htm | 49788 | 2026-02-26 15:23:29 |
| R46.htm | 23452 | 2026-02-26 15:23:29 |
| R47.htm | 120227 | 2026-02-26 15:23:29 |
| R48.htm | 116116 | 2026-02-26 15:23:29 |
| R49.htm | 11001 | 2026-02-26 15:23:29 |
| R5.htm | 32724 | 2026-02-26 15:23:29 |
| R50.htm | 295529 | 2026-02-26 15:23:29 |
| R51.htm | 222509 | 2026-02-26 15:23:29 |
| R52.htm | 53289 | 2026-02-26 15:23:29 |
| R53.htm | 53229 | 2026-02-26 15:23:29 |
| R54.htm | 73822 | 2026-02-26 15:23:29 |
| R55.htm | 48088 | 2026-02-26 15:23:29 |
| R56.htm | 43665 | 2026-02-26 15:23:29 |
| R57.htm | 60049 | 2026-02-26 15:23:29 |
| R58.htm | 27181 | 2026-02-26 15:23:29 |
| R59.htm | 14603 | 2026-02-26 15:23:29 |
| R6.htm | 7621 | 2026-02-26 15:23:29 |
| R60.htm | 25746 | 2026-02-26 15:23:29 |
| R61.htm | 16316 | 2026-02-26 15:23:29 |
| R62.htm | 35726 | 2026-02-26 15:23:29 |
| R63.htm | 56010 | 2026-02-26 15:23:29 |
| R64.htm | 44248 | 2026-02-26 15:23:29 |
| R65.htm | 9726 | 2026-02-26 15:23:29 |
| R66.htm | 32020 | 2026-02-26 15:23:29 |
| R67.htm | 4347 | 2026-02-26 15:23:29 |
| R68.htm | 112009 | 2026-02-26 15:23:29 |
| R69.htm | 185347 | 2026-02-26 15:23:29 |
| R7.htm | 61113 | 2026-02-26 15:23:29 |
| R70.htm | 24905 | 2026-02-26 15:23:29 |
| R71.htm | 54538 | 2026-02-26 15:23:29 |
| R72.htm | 28942 | 2026-02-26 15:23:29 |
| R73.htm | 30597 | 2026-02-26 15:23:29 |
| R74.htm | 37033 | 2026-02-26 15:23:29 |
| R75.htm | 14347 | 2026-02-26 15:23:29 |
| R76.htm | 31272 | 2026-02-26 15:23:29 |
| R77.htm | 43383 | 2026-02-26 15:23:29 |
| R78.htm | 9061 | 2026-02-26 15:23:29 |
| R79.htm | 26347 | 2026-02-26 15:23:29 |
| R8.htm | 7039 | 2026-02-26 15:23:29 |
| R80.htm | 27188 | 2026-02-26 15:23:29 |
| R81.htm | 32295 | 2026-02-26 15:23:29 |
| R82.htm | 30038 | 2026-02-26 15:23:29 |
| R83.htm | 75851 | 2026-02-26 15:23:29 |
| R84.htm | 65638 | 2026-02-26 15:23:29 |
| R85.htm | 18621 | 2026-02-26 15:23:29 |
| R86.htm | 22904 | 2026-02-26 15:23:29 |
| R87.htm | 4044 | 2026-02-26 15:23:29 |
| R88.htm | 113723 | 2026-02-26 15:23:29 |
| R89.htm | 29412 | 2026-02-26 15:23:29 |
| R9.htm | 127159 | 2026-02-26 15:23:29 |
| R90.htm | 29966 | 2026-02-26 15:23:29 |
| R91.htm | 23868 | 2026-02-26 15:23:29 |
| R92.htm | 95986 | 2026-02-26 15:23:29 |
| R93.htm | 58214 | 2026-02-26 15:23:29 |
| R94.htm | 76506 | 2026-02-26 15:23:29 |
| report.css | 2768 | 2026-02-26 15:23:29 |
| Show.js | 1086 | 2026-02-26 15:23:29 |