Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-25-036259-index-headers.html | 2025-03-10 16:06:09 | |
| 0000950170-25-036259-index.html | 2025-03-10 16:06:09 | |
| 0000950170-25-036259.txt | 2025-03-10 16:06:09 | |
 0000950170-25-036259-xbrl.zip | 268362 | 2025-03-10 16:06:09 |
| FilingSummary.xml | 1728 | 2025-03-10 16:06:09 |
| Financial_Report.xlsx | 6091 | 2025-03-10 16:06:09 |
| fisi-20241231.htm | 450311 | 2025-03-10 16:06:09 |
| fisi-20241231.xsd | 25986 | 2025-03-10 16:06:09 |
| fisi-20241231_htm.xml | 5618 | 2025-03-10 16:06:09 |
 img39886387_0.jpg | 323901 | 2025-03-10 16:06:09 |
| MetaLinks.json | 18678 | 2025-03-10 16:06:09 |
| R1.htm | 41899 | 2025-03-10 16:06:09 |
| report.css | 2766 | 2025-03-10 16:06:09 |
| Show.js | 1084 | 2025-03-10 16:06:09 |