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Employee Benefits | 12 Months Ended
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Dec. 31, 2019
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | NOTE 13: EMPLOYEE BENEFIT PLAN The Company sponsors a qualified defined contribution retirement plan, the Auburn National Bancorporation, Inc. 401(k) Plan (the "Plan"). Effective January 1, 2019, the Plan was amended and restated. As part of this amendment and restatement, eligible employees may contribute up to 100% of eligible compensation, subject to statutory limits upon completion of 2 months of service. Furthermore, the Company now allows employer Safe Harbor contributions. Participants are immediately vested in employer Safe Harbor contributions. Effective January 1, 2019, the Company's matching contributions on behalf of participants were equal to $1.00 for each $1.00 contributed by participants, up to 3% of the participants' eligible compensation, and $0.50 for every $1.00 contributed by participants, up to 5% of the participants' eligible compensation, for a maximum matching contribution of 4% of the participants' eligible compensation. Prior to January 1, 2019, the Company made matching contributions on behalf of participants equal to $0.50 for each $1.00 contributed by participants, up to 6% of the participant's eligible compensation, for a maximum matching contribution of 3% of the participants' eligible compensation. Company matching contributions to the Plan were $264 thousand and $131 thousand for the years ended December 31, 2019 and 2018, respectively, and are included in salaries and benefits expense.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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