Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-21-002644-index-headers.html | 2021-11-02 14:49:45 | |
| 0000950170-21-002644-index.html | 2021-11-02 14:49:45 | |
| 0000950170-21-002644.txt | 2021-11-02 14:49:45 | |
 0000950170-21-002644-xbrl.zip | 490905 | 2021-11-02 14:49:45 |
| ffin-20210930.htm | 10816323 | 2021-11-02 14:49:45 |
| ffin-20210930.xsd | 67940 | 2021-11-02 14:49:45 |
| ffin-20210930_cal.xml | 82115 | 2021-11-02 14:49:45 |
| ffin-20210930_def.xml | 348211 | 2021-11-02 14:49:45 |
| ffin-20210930_htm.xml | 14119656 | 2021-11-02 14:49:45 |
| ffin-20210930_lab.xml | 588896 | 2021-11-02 14:49:45 |
| ffin-20210930_pre.xml | 531695 | 2021-11-02 14:49:45 |
| ffin-ex31_1.htm | 15327 | 2021-11-02 14:49:45 |
| ffin-ex31_2.htm | 16884 | 2021-11-02 14:49:45 |
| ffin-ex32_1.htm | 13703 | 2021-11-02 14:49:45 |
| ffin-ex32_2.htm | 15622 | 2021-11-02 14:49:45 |
| FilingSummary.xml | 44405 | 2021-11-02 14:49:45 |
| Financial_Report.xlsx | 149295 | 2021-11-02 14:49:45 |
| MetaLinks.json | 830770 | 2021-11-02 14:49:45 |
| R1.htm | 52153 | 2021-11-02 14:49:45 |
| R10.htm | 375715 | 2021-11-02 14:49:45 |
| R11.htm | 4625202 | 2021-11-02 14:49:45 |
| R12.htm | 9201 | 2021-11-02 14:49:45 |
| R13.htm | 56173 | 2021-11-02 14:49:45 |
| R14.htm | 37772 | 2021-11-02 14:49:45 |
| R15.htm | 12773 | 2021-11-02 14:49:45 |
| R16.htm | 160797 | 2021-11-02 14:49:45 |
| R17.htm | 451988 | 2021-11-02 14:49:45 |
| R18.htm | 41720 | 2021-11-02 14:49:45 |
| R19.htm | 276568 | 2021-11-02 14:49:45 |
| R2.htm | 100104 | 2021-11-02 14:49:45 |
| R20.htm | 137452 | 2021-11-02 14:49:45 |
| R21.htm | 365583 | 2021-11-02 14:49:45 |
| R22.htm | 4620666 | 2021-11-02 14:49:45 |
| R23.htm | 51870 | 2021-11-02 14:49:45 |
| R24.htm | 34897 | 2021-11-02 14:49:45 |
| R25.htm | 136537 | 2021-11-02 14:49:45 |
| R26.htm | 435135 | 2021-11-02 14:49:45 |
| R27.htm | 35294 | 2021-11-02 14:49:45 |
| R28.htm | 70201 | 2021-11-02 14:49:45 |
| R29.htm | 34534 | 2021-11-02 14:49:45 |
| R3.htm | 14695 | 2021-11-02 14:49:45 |
| R30.htm | 27493 | 2021-11-02 14:49:45 |
| R31.htm | 27063 | 2021-11-02 14:49:45 |
| R32.htm | 30086 | 2021-11-02 14:49:45 |
| R33.htm | 32589 | 2021-11-02 14:49:45 |
| R34.htm | 67397 | 2021-11-02 14:49:45 |
| R35.htm | 12126 | 2021-11-02 14:49:45 |
| R36.htm | 7499 | 2021-11-02 14:49:45 |
| R37.htm | 33037 | 2021-11-02 14:49:45 |
| R38.htm | 32922 | 2021-11-02 14:49:45 |
| R39.htm | 64950 | 2021-11-02 14:49:45 |
| R4.htm | 114031 | 2021-11-02 14:49:45 |
| R40.htm | 115909 | 2021-11-02 14:49:45 |
| R41.htm | 59402 | 2021-11-02 14:49:45 |
| R42.htm | 61265 | 2021-11-02 14:49:45 |
| R43.htm | 148935 | 2021-11-02 14:49:45 |
| R44.htm | 36131 | 2021-11-02 14:49:45 |
| R45.htm | 143627 | 2021-11-02 14:49:45 |
| R46.htm | 45755 | 2021-11-02 14:49:45 |
| R47.htm | 55536 | 2021-11-02 14:49:45 |
| R48.htm | 6876 | 2021-11-02 14:49:45 |
| R49.htm | 16483 | 2021-11-02 14:49:45 |
| R5.htm | 42450 | 2021-11-02 14:49:45 |
| R50.htm | 13419 | 2021-11-02 14:49:45 |
| R51.htm | 12640 | 2021-11-02 14:49:45 |
| R52.htm | 11660 | 2021-11-02 14:49:45 |
| R53.htm | 80430 | 2021-11-02 14:49:45 |
| R54.htm | 34175 | 2021-11-02 14:49:45 |
| R55.htm | 21818 | 2021-11-02 14:49:45 |
| R56.htm | 24917 | 2021-11-02 14:49:45 |
| R57.htm | 24892 | 2021-11-02 14:49:45 |
| R58.htm | 54891 | 2021-11-02 14:49:45 |
| R59.htm | 7903 | 2021-11-02 14:49:45 |
| R6.htm | 87672 | 2021-11-02 14:49:45 |
| R60.htm | 11390 | 2021-11-02 14:49:45 |
| R61.htm | 63207 | 2021-11-02 14:49:45 |
| R62.htm | 15972 | 2021-11-02 14:49:45 |
| R63.htm | 6535 | 2021-11-02 14:49:45 |
| R64.htm | 6180 | 2021-11-02 14:49:45 |
| R65.htm | 27971 | 2021-11-02 14:49:45 |
| R7.htm | 5055 | 2021-11-02 14:49:45 |
| R8.htm | 96974 | 2021-11-02 14:49:45 |
| R9.htm | 222275 | 2021-11-02 14:49:45 |
| report.css | 2767 | 2021-11-02 14:49:45 |
| Show.js | 1085 | 2021-11-02 14:49:45 |