Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2011
Summary of Signficant Accounting Policies
Significant Accounting Policies Text Block	NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES General Auburn National Bancorporation, Inc. (the “Company”) provides a full range of banking services to individual and corporate customers in Lee County, Alabama and surrounding counties through its wholly owned subsidiary, AuburnBank (the “Bank”). The Company does not have any segments other than banking that are considered material. Basis of Presentation and Use of Estimates The unaudited condensed consolidated financial statements in this report have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, these financial statements do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. The unaudited condensed consolidated financial statements include, in the opinion of management, all adjustments necessary to present a fair statement of the financial position and the results of operations for all periods presented. All such adjustments are of a normal recurring nature. The results of operations in the interim statements are not necessarily indicative of the results of operations that the Company and its subsidiaries may achieve for future interim periods or the entire year. For further information, refer to the consolidated financial statements and footnotes included in the Company's annual report on Form 10-K for the year ended December 31, 2010. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the balance sheet date and the reported amounts or revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term include other-than-temporary impairment on investment securities, the determination of the allowance for loan losses, fair value of financial instruments, income taxes, and the valuation of deferred tax assets and other real estate owned. Reclassifications Certain amounts reported in prior periods have been reclassified to conform to the current-period presentation. These reclassifications had no effect on the Company's previously reported net earnings or total stockholders' equity. Subsequent Events The Company has evaluated the effects of events or transactions through the date of this filing that have occurred subsequent to September 30, 2011. The Company does not believe there are any material subsequent events that would require further recognition or disclosure. Accounting Developments In the first quarter of 2011, the Company adopted new guidance related to the following Codification topic: Accounting Standards Update (“ASU”) 2010-06, Improving Disclosures about Fair Value Measurements. In the third quarter of 2011, the Company adopted new guidance related to the following Codification topic: ASU 2011-02, A Creditor's Determination of Whether a Restructuring Is a Troubled Debt Restructuring. Information about these pronouncements is described in more detail below. ASU 2010-06, Improving Disclosures about Fair Value Measurements, amends the disclosure requirements for fair value measurements. Companies are required to disclose significant transfers in and out of Levels 1 and 2 of the fair value hierarchy. The ASU also clarifies that fair value measurement disclosures should be presented for each asset and liability class, which is generally a subset of a line item in the statement of financial position. In the roll-forward of Level 3 activity, companies must present information on purchases, sales, issuances, and settlements on a gross basis rather than on a net basis. Companies should also provide information about the valuation techniques and inputs used to measure fair value for both recurring and nonrecurring instruments classified as either Level 2 or Level 3. In the first quarter of 2011, the Company adopted the requirement for gross presentation in the Level 3 roll-forward with prospective application. The remaining provisions were effective for the Company in the first quarter of 2010. Adoption of the ASU did not have a significant impact on the consolidated financial statements of the Company since it amends only the disclosure requirements for fair value measurements.

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2011

Summary of Signficant Accounting Policies

Significant Accounting Policies Text Block

NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

General

Auburn National Bancorporation, Inc. (the “Company”) provides a full range of banking services to individual and corporate customers in Lee County, Alabama and surrounding counties through its wholly owned subsidiary, AuburnBank (the “Bank”). The Company does not have any segments other than banking that are considered material.

Basis of Presentation and Use of Estimates

The unaudited condensed consolidated financial statements in this report have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, these financial statements do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. The unaudited condensed consolidated financial statements include, in the opinion of management, all adjustments necessary to present a fair statement of the financial position and the results of operations for all periods presented. All such adjustments are of a normal recurring nature. The results of operations in the interim statements are not necessarily indicative of the results of operations that the Company and its subsidiaries may achieve for future interim periods or the entire year. For further information, refer to the consolidated financial statements and footnotes included in the Company's annual report on Form 10-K for the year ended December 31, 2010.

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the balance sheet date and the reported amounts or revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term include other-than-temporary impairment on investment securities, the determination of the allowance for loan losses, fair value of financial instruments, income taxes, and the valuation of deferred tax assets and other real estate owned.

Reclassifications

Certain amounts reported in prior periods have been reclassified to conform to the current-period presentation. These reclassifications had no effect on the Company's previously reported net earnings or total stockholders' equity.

Subsequent Events

The Company has evaluated the effects of events or transactions through the date of this filing that have occurred subsequent to September 30, 2011. The Company does not believe there are any material subsequent events that would require further recognition or disclosure.

Accounting Developments

In the first quarter of 2011, the Company adopted new guidance related to the following Codification topic:

Accounting Standards Update (“ASU”) 2010-06, Improving Disclosures about Fair Value Measurements.

In the third quarter of 2011, the Company adopted new guidance related to the following Codification topic:
ASU 2011-02, A Creditor's Determination of Whether a Restructuring Is a Troubled Debt Restructuring.

Information about these pronouncements is described in more detail below.

ASU 2010-06, Improving Disclosures about Fair Value Measurements, amends the disclosure requirements for fair value measurements. Companies are required to disclose significant transfers in and out of Levels 1 and 2 of the fair value hierarchy. The ASU also clarifies that fair value measurement disclosures should be presented for each asset and liability class, which is generally a subset of a line item in the statement of financial position. In the roll-forward of Level 3 activity, companies must present information on purchases, sales, issuances, and settlements on a gross basis rather than on a net basis. Companies should also provide information about the valuation techniques and inputs used to measure fair value for both recurring and nonrecurring instruments classified as either Level 2 or Level 3. In the first quarter of 2011, the Company adopted the requirement for gross presentation in the Level 3 roll-forward with prospective application. The remaining provisions were effective for the Company in the first quarter of 2010. Adoption of the ASU did not have a significant impact on the consolidated financial statements of the Company since it amends only the disclosure requirements for fair value measurements.