Auburn National Bancorporation - Parent Only, Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net earnings	$ 6,397	$ 1,395
Adjustments to reconcile net earnings to net cash provided by operating activties:
Depreciation and amortization	1,933	1,700
Net increase in other assets	1,168	(2,652)
Net increase in accrued expenses and other liabilities	2,149	(2,011)
Net cash provided by operating activities	10,809	11,902
Cash flows from investing activities:
Payments to Acquire Property, Plant, and Equipment	2,089	418
Net cash used in investing activities	16,854	91,377
Cash flows from financing activities:
Stock repurchases	0	229
Payments of Ordinary Dividends	3,773	3,776
Net cash provided by (used in) financing activities	(5,678)	(59,164)
Net change in cash and cash equivalents	21,985	44,115
Cash and cash equivalents at beginning of period	71,369	27,254
Cash and cash equivalents at end of period	93,354	71,369
Parent Company [Member]
Cash flows from operating activities:
Net earnings	6,397	1,395
Adjustments to reconcile net earnings to net cash provided by operating activties:
Net increase in other assets	9	1
Net increase in accrued expenses and other liabilities	(56)	8
Equity In Distributed (Undistributed) Earnings Of Bank Subsidary	(2,835)	2,180
Net cash provided by operating activities	3,497	3,582
Cash flows from financing activities:
Stock repurchases	0	229
Payments of Ordinary Dividends	3,773	3,776
Net cash provided by (used in) financing activities	(3,773)	(4,005)
Net change in cash and cash equivalents	(276)	(423)
Cash and cash equivalents at beginning of period	1,277	1,700
Cash and cash equivalents at end of period	$ 1,001	$ 1,277