Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000714395-21-000028-index-headers.html | 2021-05-07 16:18:41 | |
| 0000714395-21-000028-index.html | 2021-05-07 16:18:41 | |
| 0000714395-21-000028.txt | 2021-05-07 16:18:41 | |
 0000714395-21-000028-xbrl.zip | 446126 | 2021-05-07 16:18:41 |
| exhibit311-q12021.htm | 8760 | 2021-05-07 16:18:41 |
| exhibit312-q12021.htm | 9090 | 2021-05-07 16:18:41 |
| exhibit321-q12021.htm | 4581 | 2021-05-07 16:18:41 |
| exhibit322-q12021.htm | 4877 | 2021-05-07 16:18:41 |
| FilingSummary.xml | 50377 | 2021-05-07 16:18:41 |
| Financial_Report.xlsx | 144053 | 2021-05-07 16:18:41 |
| gabc-20210331.htm | 3701945 | 2021-05-07 16:18:41 |
| gabc-20210331.xsd | 61003 | 2021-05-07 16:18:41 |
| gabc-20210331_cal.xml | 128279 | 2021-05-07 16:18:41 |
| gabc-20210331_def.xml | 467210 | 2021-05-07 16:18:41 |
| gabc-20210331_htm.xml | 4513722 | 2021-05-07 16:18:41 |
| gabc-20210331_lab.xml | 802937 | 2021-05-07 16:18:41 |
| gabc-20210331_pre.xml | 640417 | 2021-05-07 16:18:41 |
| MetaLinks.json | 820945 | 2021-05-07 16:18:41 |
| R1.htm | 52198 | 2021-05-07 16:18:41 |
| R10.htm | 73922 | 2021-05-07 16:18:41 |
| R11.htm | 21379 | 2021-05-07 16:18:41 |
| R12.htm | 105040 | 2021-05-07 16:18:41 |
| R13.htm | 24432 | 2021-05-07 16:18:41 |
| R14.htm | 680510 | 2021-05-07 16:18:41 |
| R15.htm | 5222 | 2021-05-07 16:18:41 |
| R16.htm | 76143 | 2021-05-07 16:18:41 |
| R17.htm | 6512 | 2021-05-07 16:18:41 |
| R18.htm | 22347 | 2021-05-07 16:18:41 |
| R19.htm | 221351 | 2021-05-07 16:18:41 |
| R2.htm | 94210 | 2021-05-07 16:18:41 |
| R20.htm | 49964 | 2021-05-07 16:18:41 |
| R21.htm | 27381 | 2021-05-07 16:18:41 |
| R22.htm | 113574 | 2021-05-07 16:18:41 |
| R23.htm | 80400 | 2021-05-07 16:18:41 |
| R24.htm | 44542 | 2021-05-07 16:18:41 |
| R25.htm | 20396 | 2021-05-07 16:18:41 |
| R26.htm | 103500 | 2021-05-07 16:18:41 |
| R27.htm | 25481 | 2021-05-07 16:18:41 |
| R28.htm | 676192 | 2021-05-07 16:18:41 |
| R29.htm | 70525 | 2021-05-07 16:18:41 |
| R3.htm | 11615 | 2021-05-07 16:18:41 |
| R30.htm | 12926 | 2021-05-07 16:18:41 |
| R31.htm | 219036 | 2021-05-07 16:18:41 |
| R32.htm | 48281 | 2021-05-07 16:18:41 |
| R33.htm | 18124 | 2021-05-07 16:18:41 |
| R34.htm | 75316 | 2021-05-07 16:18:41 |
| R35.htm | 24127 | 2021-05-07 16:18:41 |
| R36.htm | 53853 | 2021-05-07 16:18:41 |
| R37.htm | 68959 | 2021-05-07 16:18:41 |
| R38.htm | 33953 | 2021-05-07 16:18:41 |
| R39.htm | 26120 | 2021-05-07 16:18:41 |
| R4.htm | 105138 | 2021-05-07 16:18:41 |
| R40.htm | 41444 | 2021-05-07 16:18:41 |
| R41.htm | 11135 | 2021-05-07 16:18:41 |
| R42.htm | 18138 | 2021-05-07 16:18:41 |
| R43.htm | 31004 | 2021-05-07 16:18:41 |
| R44.htm | 6227 | 2021-05-07 16:18:41 |
| R45.htm | 16661 | 2021-05-07 16:18:41 |
| R46.htm | 6896 | 2021-05-07 16:18:41 |
| R47.htm | 52900 | 2021-05-07 16:18:41 |
| R48.htm | 36548 | 2021-05-07 16:18:41 |
| R49.htm | 76793 | 2021-05-07 16:18:41 |
| R5.htm | 30727 | 2021-05-07 16:18:41 |
| R50.htm | 38143 | 2021-05-07 16:18:41 |
| R51.htm | 91926 | 2021-05-07 16:18:41 |
| R52.htm | 77847 | 2021-05-07 16:18:41 |
| R53.htm | 22973 | 2021-05-07 16:18:41 |
| R54.htm | 116163 | 2021-05-07 16:18:41 |
| R55.htm | 64463 | 2021-05-07 16:18:41 |
| R56.htm | 10577 | 2021-05-07 16:18:41 |
| R57.htm | 27007 | 2021-05-07 16:18:41 |
| R58.htm | 9788 | 2021-05-07 16:18:41 |
| R59.htm | 6362 | 2021-05-07 16:18:41 |
| R6.htm | 50561 | 2021-05-07 16:18:41 |
| R60.htm | 62958 | 2021-05-07 16:18:41 |
| R61.htm | 13958 | 2021-05-07 16:18:41 |
| R62.htm | 73770 | 2021-05-07 16:18:41 |
| R63.htm | 10783 | 2021-05-07 16:18:41 |
| R64.htm | 19054 | 2021-05-07 16:18:41 |
| R65.htm | 40287 | 2021-05-07 16:18:41 |
| R66.htm | 8492 | 2021-05-07 16:18:41 |
| R67.htm | 15130 | 2021-05-07 16:18:41 |
| R68.htm | 44446 | 2021-05-07 16:18:41 |
| R69.htm | 46933 | 2021-05-07 16:18:41 |
| R7.htm | 4487 | 2021-05-07 16:18:41 |
| R70.htm | 49404 | 2021-05-07 16:18:41 |
| R71.htm | 25119 | 2021-05-07 16:18:41 |
| R72.htm | 25270 | 2021-05-07 16:18:41 |
| R73.htm | 32371 | 2021-05-07 16:18:41 |
| R74.htm | 13946 | 2021-05-07 16:18:41 |
| R75.htm | 13376 | 2021-05-07 16:18:41 |
| R76.htm | 20151 | 2021-05-07 16:18:41 |
| R77.htm | 9312 | 2021-05-07 16:18:41 |
| R78.htm | 41890 | 2021-05-07 16:18:41 |
| R8.htm | 96643 | 2021-05-07 16:18:41 |
| R9.htm | 6740 | 2021-05-07 16:18:41 |
| report.css | 2767 | 2021-05-07 16:18:41 |
| Show.js | 1085 | 2021-05-07 16:18:41 |