Regulatory Capital Requirements (Schedule of Actual and Required Capital Amounts and Ratios) (Details) $ in Thousands |
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
|
|---|---|---|
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Actual - Tier 1 Capital to average total assets, ratio | 0.1665 | 0.1383 |
| Lake Shore Bank [Member] | ||
| Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] | ||
| Actual - Tier 1 Capital to average total assets, amount | $ 124,696 | $ 97,244 |
| Actual - Tier 1 Capital to average total assets, ratio | 0.1665 | 0.1383 |
| To Be Well Capitalized Under Prompt Corrective Action Regulations (CBLR Framework) - Tier 1 Capital to average total assets, amount | $ 67,399 | $ 63,271 |
| To Be Well Capitalized Under Prompt Corrective Action Regulations (CBLR Framework) - Tier 1 Capital to average total assets, ratio | 0.09 | 0.09 |