Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-25-098332-index-headers.html | 2025-07-24 16:06:11 | |
| 0000950170-25-098332-index.html | 2025-07-24 16:06:11 | |
| 0000950170-25-098332.txt | 2025-07-24 16:06:11 | |
 0000950170-25-098332-xbrl.zip | 301029 | 2025-07-24 16:06:11 |
| FilingSummary.xml | 1724 | 2025-07-24 16:06:11 |
| fisi-20250630.htm | 56553 | 2025-07-24 16:06:11 |
| fisi-20250630.xsd | 25063 | 2025-07-24 16:06:11 |
| fisi-20250630_htm.xml | 4750 | 2025-07-24 16:06:11 |
| fisi-ex99_1.htm | 2197171 | 2025-07-24 16:06:11 |
 img145321324_0.jpg | 323901 | 2025-07-24 16:06:11 |
 img40783960_0.jpg | 323901 | 2025-07-24 16:06:11 |
| MetaLinks.json | 18194 | 2025-07-24 16:06:11 |
| R1.htm | 39698 | 2025-07-24 16:06:11 |
| report.css | 2766 | 2025-07-24 16:06:11 |
| Show.js | 1084 | 2025-07-24 16:06:11 |