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PARENT COMPANY ONLY - Condensed Balance Sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Other assets | $ 51,135 | $ 46,681 |  |
TOTAL ASSETS | 2,610,653 | 2,515,584 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Senior notes, net | 14,899 | 14,831 |  |
Subordinated debt, net | 24,831 | 24,717 |  |
Accrued interest and other liabilities | 33,791 | 26,638 |  |
Stockholders' equity | 275,284 | 262,381 | $ 249,325 | $ 301,405
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 2,610,653 | 2,515,584 |  |
Parent Company |  |  |  |
ASSETS |  |  |  |
Cash | 16,013 | 14,822 |  |
Other assets | 136 | 200 |  |
TOTAL ASSETS | 315,186 | 302,128 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Senior notes, net | 14,899 | 14,831 |  |
Subordinated debt, net | 24,831 | 24,717 |  |
Accrued interest and other liabilities | 172 | 199 |  |
Stockholders' equity | 275,284 | 262,381 |  |
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 315,186 | 302,128 |  |
Subsidiaries [Member] | Citizens and Northern Bank [Member] |  |  |  |
ASSETS |  |  |  |
Investment in subsidiaries | 285,465 | 272,286 |  |
Subsidiaries [Member] | Citizens and Northern Investment Corporation [Member] |  |  |  |
ASSETS |  |  |  |
Investment in subsidiaries | 9,768 | 11,087 |  |
Subsidiaries [Member] | Bucktail Life Insurance Company [Member] |  |  |  |
ASSETS |  |  |  |
Investment in subsidiaries | $ 3,804 | $ 3,733 |  |

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