Auburn National Bancorporation (AUBN) 10-K 3 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Mar. 02, 2017	Jun. 30, 2016
Document and entity information [Abstract]
Entity public float			$ 67,049,050
Current fiscal year end date	--12-31
Entity central index key	750,574
Entity current reporting status	Yes
Entity filer category	Smaller Reporting Company
Entity registrant name	Auburn National Bancorporation, Inc
Trading Symbol	AUBN
Entity voluntary filers	No
Entity well known seasoned issuer	No
Entity common stock shares outstanding		3,643,543
Amendment flag	false
Document Type	10-K
Document Year Focus	2,016
Document Period Focus	FY
Document Period End Date	Dec. 31, 2016

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Cash and due from banks	$ 15,673	$ 9,806
Federal funds sold	42,096	57,395
Interest bearing bank deposits	63,508	46,729
Cash and cash equivalents	121,277	113,930
Securities available-for-sale	243,572	241,687
Loans held for sale	1,497	1,540
Loans, net of unearned income	430,946	426,410
Allowance for loan losses	(4,643)	(4,289)
Loans, net	426,303	422,121
Premises and equipment, net	12,602	11,866
Bank-owned life insurance	17,888	17,433
Other real estate owned	152	252
Other assets	8,652	8,360
Total assets	831,943	817,189
Deposits:
Noninterest-bearing	181,890	156,817
Interest-bearing	557,253	566,810
Total deposits	739,143	723,627
Federal funds purchased and securities sold under agreements to repurchase	3,366	2,951
Long-term debt	3,217	7,217
Accrued expenses and other liabilities	4,040	3,445
Total liabilities	749,766	737,240
Stockholders' equity:
Preferred stock	0	0
Common stock	39	39
Additional paid-in capital	3,767	3,766
Retained earnings	85,716	80,845
Accumulated other comprehensive (loss) income, net	(708)	1,937
Less treasury stock, at cost	(6,637)	(6,638)
Total stockholders' equity	82,177	79,949
Total liabilities and stockholders' equity	$ 831,943	$ 817,189

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Preferred stock par value	$ 0.01	$ 0.01
Authorized shares, preferred	200,000	200,000
Issued shares, preferred	0	0
Common stock par value	$ 0.01	$ 0.01
Authorized shares, common	8,500,000	8,500,000
Issued shares, common	3,957,135	3,957,135
Treasury stock, shares held	313,612	313,657

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Interest income:
Loans, including fees	$ 20,453	$ 20,484
Securities - Taxable	3,282	3,851
Securities - Tax-exempt	2,478	2,604
Federal funds sold and interest bearing bank deposits	603	214
Total interest income	26,816	27,153
Interest expense:
Deposits	3,841	4,135
Short-term borrowings	15	18
Long-term debt interest expense	228	282
Total interest expense	4,084	4,435
Net interest income	22,732	22,718
Provision for loan losses	(485)	200
Net interest income after provision for loan losses	23,217	22,518
Noninterest income:
Service charges on deposit accounts	773	823
Mortgage lending	947	1,444
Bank-owned life insurance income	456	747
Other noninterest income	1,428	1,502
Securities (losses) gains, net	(221)	16
Total noninterest income	3,383	4,532
Noninterest expense:
Salaries and benefits	9,826	9,293
Net occupancy and equipment	1,474	1,547
Professional fees	825	756
FDIC and other regulatory assessments	406	472
Other real estate owned, net	(371)	11
(Gain) loss on early extinguishment of debt	(790)	362
Other noninterest expense	3,978	3,931
Total noninterest expense	15,348	16,372
Earnings before income taxes	11,252	10,678
Income tax expense	3,102	2,820
Net earnings	$ 8,150	$ 7,858
Net earnings per share:
Basic and diluted earnings per share	$ 2.24	$ 2.16
Weighted average shares outstanding:
Basic and diluted weighted average shares outstanding	3,643,504	3,643,428

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statements of Comprehensive Income [Abstract]
Net earnings	$ 8,150	$ 7,858
Other comprehensive loss, net of tax:
Unrealized net holding loss on all other securities	(2,784)	(496)
Reclassification adjustment for net loss (gain) on securities recognized in net earnings	139	(10)
Other comprehensive loss	(2,645)	(506)
Comprehensive income	$ 5,505	$ 7,352

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Member	Additional Paid In Capital Member	Retained Earnings Member	Accumulated Other Comprehensive Income Member	Treasury Stock Member
Balance, shares at Dec. 31, 2014	3,957,135
Balance, Beg at Dec. 31, 2014	$ 75,799	$ 39	$ 3,763	$ 76,193	$ 2,443	$ (6,639)
Net earnings	7,858	0	0	7,858	0	0
Other Comprehensive Income (Loss), Net Of Tax	(506)	0	0	0	(506)	0
Cash dividends paid	(3,206)	0	0	(3,206)	0	0
Sale of treasury stock	4	0	3	0	0	1
Balance, End at Dec. 31, 2015	$ 79,949	39	3,766	80,845	1,937	(6,638)
Balance, shares at Dec. 31, 2015	3,957,135
Net earnings	$ 8,150	0	0	8,150	0	0
Other Comprehensive Income (Loss), Net Of Tax	(2,645)	0	0	0	(2,645)	0
Cash dividends paid	(3,279)	0	0	(3,279)	0	0
Sale of treasury stock	2	0	1	0	0	1
Balance, End at Dec. 31, 2016	$ 82,177	$ 39	$ 3,767	$ 85,716	$ (708)	$ (6,637)
Balance, shares at Dec. 31, 2016	3,957,135

Consolidated Statements of Sto7

Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statement of Stockholders' Equity (Parentheticals)
Cash dividends paid per share	$ 0.9	$ 0.88
Treasury shares sold	45	150

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net earnings	$ 8,150	$ 7,858
Adjustments to reconcile net earnings to net cash provided by operating activties:
Provision for loan losses	(485)	200
Depreciation and amortization	1,200	1,166
Premium amortization and discount accretion, net	1,677	1,549
Deferred income tax expense	461	620
Net loss (gain) on securities available for sale	221	(16)
Net gain on sale of loans held for sale	(764)	(1,152)
Net (gain) loss on other real estate owned	(392)	1
(Gain) loss on early extinguishment of debt	(790)	362
Loans originated for sale	(42,860)	(63,566)
Proceeds from sale of loans	43,343	64,623
Increase in cash surrender value of bank owned life insurance	(455)	(471)
Income recognized from death benefit on bank-owned life insurance	0	276
Net decrease (increase) in other assets	412	(350)
Net increase in accrued expenses and other liabilities	769	304
Net cash provided by operating activities	10,487	10,852
Cash flows from investing activities:
Proceeds from sales of securities available-for-sale	26,110	0
Proceeds from maturities of securities available-for-sale	63,410	31,334
Purchase of securities available-for-sale	(97,494)	(7,752)
Increase in loans, net	(4,097)	(24,212)
Net purchases of premises and equipment	(1,206)	(1,534)
(Increase) decrease in FHLB stock	(25)	191
Proceeds from bank-owned life insurance death benefit	0	1,319
Proceeds from sale of other real estate owned	720	290
Net cash used in investing activities	(12,582)	(364)
Cash flows from financing activities:
Net increase in noninterest-bearing deposits	25,073	26,657
Net (decrease) increase in interest-bearing deposits	(9,557)	3,580
Net increase (decrease) in federal funds purchased and securities sold under agreements to repurchase	415	(1,730)
Repayments or retirement of long-term debt	(3,210)	(5,362)
Dividends paid	(3,279)	(3,206)
Net cash provided by financing activities	9,442	19,939
Net change in cash and cash equivalents	7,347	30,427
Cash and cash equivalents at beginning of period	113,930	83,503
Cash and cash equivalents at end of period	121,277	113,930
Cash paid during the period for:
Interest	4,108	4,528
Income taxes	2,203	2,308
Supplemental disclosure of non-cash transactions:
Real estate acquired through foreclosure	$ 400	$ 9

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Summary of Signficant Accounting Policies
Summary of Significant Accounting Policies Text Block	AUBURN NATIONAL BANCORPORATION, INC. AND SUBSIDIARIES Notes to Consolidated Financial Statements NOTE 1 : SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Business Auburn National Bancorporation, Inc. (the “Company”) is a bank holding company whose primary business is conducted by its wholly-owned subsidiary, AuburnBank (the “Bank”). AuburnBank is a commercial bank located in Auburn, Alabama. The Bank provides a full range of banking services in its primary market area, Lee County, which includ es the Auburn-Opelika Metropolitan Statistical Area. Basis of Presentation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiar ies. Auburn National Bancorporation Capital Trust I is an affiliate of the Company and was included in these consolidated financial statements pursuant to the equity method of accounting. Significant intercompany transactions and accounts are eliminated in consolidation. Use of Estimates The preparation of financial statemen ts 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 the disclosure of contingent assets and liabilities as of the balance s heet date and the reported amounts of income and expense 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 the determination of the allowance for loan losses , fair value measurements , valuation of other real estate owned, and valuation of deferred tax assets. Reclassifications Certain amounts reported in the prior period have been reclassified to conform to the current-period p resentation. These reclassifications had no impact on the Company’s previously reported net earnings or total stockholders’ equity . Acco unting Standards Adopted in 2016 In the first quarter of 2016 , the Company adopted new guidance related to the fol lowing Accounting Standards Updates (“Updates” or “ASUs”): ASU 2015-02, Amendments to the Consolidation Analysis ; ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs ; and ASU 2015-05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. Information about these pronouncements is described in more detail below. ASU 2015-02, Amendments to the Consolidation Analysis , affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. Specifically, the amendments: (1) Modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (“VIEs”) or voting interest entities; (2) Eliminate the presumption that a general partner should consolidate a limited partnership; (3) Affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) Provide a scope exce ption from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registere d money market funds. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, requires that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the debt liability, rather than as an asset. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. ASU 2015-05, Customer’s Accountin g for Fees Paid in a Cloud Computing Arrangement , provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the soft ware license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidanc e does not change the accounting for a customer’s accounting for service contracts. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. Cash Equivalents Cash equivalents include c ash on hand, cash item s in process of collection, amounts due from banks, including interest bearing deposits with other banks, and federal funds sold. Securities Securities are classified based on management’s intention at the date of purchase. At December 31, 2016 , all of the Company’s securities were classified as available-for-sale. Securities available-for-sale are used as part of the Company’s interest rate risk management strategy, and they may be sold in response to changes in interest rates, changes in prepayment risks or other factors. All securities classified as available-for-sale are recorded at fair value with any unrealized gains and losses reported in accu mulated other comprehensive income , net of the deferred income tax effects. Interest and dividends on s ecurities, including the amortization of premiums and accretion of discounts are recognized in interest income over the anticipated life of the security using the effective interest method, taking into consideration prepayment assumptions. Realized gains a nd losses from the sale of securities are determined using the specific identification method. On a quarterly basis, management makes an assessment to determine whether there have been events or economic circumstances to indicate that a security on which there is an unrealized loss is other-than-temporarily impaired. For equity securities with an unrealized loss, the Company considers many factors including the severity and duration of the impairment; the intent and ability of the Company to hold the secu rity for a period of time sufficient for a recovery in value; and recent events specific to the issuer or industry. Equity securities on which there is an unrealized loss that is deemed to be other-than-temporary are written down to fair value with the wri te-down recorded as a realized loss in securities gains (losses) , net . For debt securities with an unrealized loss, an other-than-temporary impairment write-down is triggered when (1) the Company has the intent to sell a debt security, (2) it is more li kely than not that the Company will be required to sell the debt security before recovery of its amortized cost basis, or (3) the Company does not expect to recover the entire amortized cost basis of the debt security. If the Company has the intent to sel l a debt security or if it is more likely than not that it will be required to sell the debt security before recovery, the other-than-temporary write-down is equal to the entire difference between the debt security’s amortized cost and its fair value. If the Company does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the other-than-temporary impairment write-down is separated into the amount that is credit related (credit los s component) and the amount due to all other factors. The credit loss component is recognized in earnings, as a realized loss in securities gains (losses), and is the difference between the security’s amortized cost basis and the present value of its expe cted future cash flows. The remaining difference between the security’s fair value and the present value of future expected cash flows is due to factors that are not credit related and is recognized in other comprehensive income, net of applicable taxes. Loans held for sale Loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate . Loan sales are recognized when the transaction closes, the proceeds are collected, and ownersh ip is transferred. Continuing involvement, through the sales agreement, consists of the right to service the loan for a fee for the life of the loan, if applicable. Gains on the sale of loans held for sale are recorded net of related costs, such as commi ssions, and reflected as a component of mortgage lending income in the consolidated statements of earnings. In the course of conducting the Bank’s mortgage lending activities of originating mortgage loans and selling those loans in the secondary marke t, the Bank makes various representations and warranties to the purchaser of the mortgage loans. Every loan closed by the Bank’s mortgage center is run through a government agency automated underwriting system. Any exceptions noted during this process ar e remedied prior to sale. These representations and warranties also apply to underwriting the real estate appraisal opinion of value for the collateral securing these loans. Failure by the Company to comply with the underwriting and/or appraisal standard s could result in the Company being required to repurchase the mortgage loan or to reimburse the investor for losses incurred (make whole requests) if such failure cannot be cured by the Company within the specified period following discovery. Loans L oans are reported at their outstanding principal balances, net of any unearned income , charge-offs, and any deferred fees or costs on originated loans. Interest income is accrued based on the principal balance outstanding. Loan origination fees, net of c ertain loan origination costs, are deferred and recognized in interest income over the contractual life of the loan using the effective interest method. Loan commitment fees are generally deferred and amortized on a straight-line basis over the commitment period , which results in a recorded amount that approximates fair value . The accrual of interest on loans is discontinued when there is a significant deterioration in the financial condition of the borrower and full repayment of principal and interest is not expected or the principal or interest is more than 90 days past due, unless the loan is both well-collateralized and in the process of collection. Generally, all interest accrued but not collected for loans that are placed on nonaccrual status is reve rsed against current interest income. Interest collections on non accrual loans are generally applied as principal reductions. The Company determines past due or delinquency status of a loan based on contractual payment terms. A loan is considered impaire d when it is probable the Company will be unable to collect all principal and interest payments due according to the contractual terms of the loan agreement. Individually identified impaired loans are measured based on the present value of expected payment s using the loan’s original effective rate as the discount rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent. If the recorded investment in the impaired loan exceeds the measure of fair value, a valuation allowance may be established as part of the allowance for loan losses. Changes to the valuation allowance are recorded as a component of the provision for loan losses. Impaired loans also include troubled debt restructurings (“TDRs”). In the normal course of business, management may grant concessions to borrowers who are experiencing financial difficulty. The concessions granted most frequently for TDRs involve reductions or delays in required payments of principal and interest for a specified time, the rescheduling of payments in accordance with a bankruptcy plan or the charge-off of a portion of the loan. In most cases, the conditions of the credit also warrant nonaccrual st atus, even after the restructuring occurs. As part of the credit approval process, the restructured loans are evaluated for adequate collateral protection in determining the appropriate accrual s tatus at the time of restructuring . TDR loans may be returned to accrual status if there has been at least a six-month sustained period of repayment performance by the borrower. Allowance for Loan Losses The allowance for loan los ses is maintained at a level that management believes is adequate to absorb probable losses inherent in the loan portfolio. Loan losses are charged against the allowance when they are known. Subsequent recoveries are credited to the allowance. Management’s determination of the adequacy of the allowance is based on an evaluation of the portfolio, current economic conditions, growth, composition of the loan portfolio, homogeneous pools of loans, risk ratings of specific loans, historical loan loss factors, id entified impaired loans and other factors related to the portfolio. This evaluation is performed quarterly and is inherently subjective, as it requires various material estimates that are susceptible to significant change, including the amounts and timing of future cash flows expected to be received on any impaired loans. In addition, regulatory agencies, as an integral part of their examination process, will periodically review the Company’s allowance for loan losses, and may require the Company to record additions to the allowance based on their judgment about information available to them at the time of their examinations. Premises and Equipment Land is carried at cost. Buildings and equipment are carried at cost, less accumulated depreciation compute d on a straight-line method over the useful lives of the assets or the expected terms of the leases, if shorter. Expected terms include lease option periods to the extent that the exercise of such options is reasonably assured. Other Real Estate Owned O ther real estate owned (“OREO”) includes properties acquired through, or in lieu of, loan foreclosure that are held for sale and are initially recorded at the lower of the loan’s carrying amount or fair value less cost to sell at the date of foreclosure, e stablishing a new cost basis. Subsequent to foreclosure, valuations are periodically performed by management and the assets are carried at the lower of carrying value amount or fair value less cost to sell. Gains or losses realized upon sale of OREO and a dditional losses related to subsequent valuation adjustments are determined on a specific property basis and are included as a component of noninterest expense along with holding costs. Nonmarketable equity investments Nonmarketable equity investments include equity securities that are not publicly traded and securities acquired for various purposes . The Bank is required to maintain certain minimum levels of equity investments with certain regulatory and other entities in which the Bank has an ongoing business relationship based on the Bank’s common stock and surplus (with regard to the relationship with the Federal Reserve Bank) or outstanding borrowings (with regard to the relationship with the Federal Home Loan Bank of Atlanta). These secu rities are accounted for under the cost method and are included in other assets. For cost-method investments , on a quarterly basis , the Company evaluates whether an event or change in circumstances has occurred during the reporting period that may have a significant adverse effect on the fair value of the investment. If the Company determines that a decline in value is other-than-temporary, the Company will recognize the estimated loss in securities gains (losses), net. Transfers of Financial Assets Tra nsfers of an entire financial asset (i.e. loan sales), a group of entire financial assets, or a participating interest in an entire financial asset (i.e. loan participations sold) are accounted for as sales when control over the assets have been surrendere d. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Mortgage Servicing Rights The Company recognizes as assets the rights to service mortgage loans f or others, known as MSRs. The Company determines the fair value of MSRs at the date the loan is transferred. An estimate of the Company’s MSRs is determined using assumptions that market participants would use in estimating future net servicing income, in cluding estimates of pre p ayment speeds, discount rate, default rates, cost to service, escrow account earnings, contractual servicing fee income, ancillary income, and late fees. Subsequent to the date of transfer, the Company has elected to measure its MSRs under the amortization method. Under the amortization method, MSRs are amortized in proportion to, and over the period of, estimated net servicing income. The amortization of MSRs is analyzed monthly and is adjusted to reflect changes in prepayment speeds, as well as other factors. MSRs are evaluated for impairment based on the fair value of those assets. Impairment is determined by stratifying MSRs into groupings based on p redominant risk characteristics, such as interest rate and loan type. If, by individual stratum, the carrying amount of the MSRs exceeds fair value, a valuation allowance is established through a charge to earnings. The valuation allowance is adjusted as the fair value changes. MSRs are included in the other assets category in the accompanying consolidated balance sheet s . Derivative Instruments In accordance with Accounting Standards Codification (“ASC”) Topic 815, Derivatives and Hedging , all derivat ive instruments are recorded on the consolidated balance sheet at their res pective fair values. The accounting for changes in fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, if so, on the reason for holding it. If the derivative instrument is not designated as part of a hedg ing relationship , the gain or loss on the derivative instrument is recognized in earnings in the period of change. None of the derivatives utilized by the Company have been designated as a hedge. Securities sold under agreements to repurchase Securities sold under agreements to repurchase generally mature less than one year from the transaction date. Securities sold under agre ements to repurchase are reflected as a secured borrowing in the accompanying consolidated balance sheets at the amount of cash received in connection with each transaction. Income Taxes Deferred tax assets and liabilities are the expected future tax a mounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. The net deferred tax asset is reflected as a component of other assets in the accompanying consolidated balance sheets. Income tax expense or benefit for the year is allocated among continuing operations and other comprehensive income (loss), as applicable. The amount all ocated to continuing operations is the income tax effect of the pretax income or loss from continuing operations that occurred during the year, plus or minus income tax effects of ( 1 ) changes in certain circumstances that cause a change in judgment about t he realization of deferred tax assets in future years, ( 2 ) changes in income tax laws or rates, and ( 3 ) changes in income tax status, subject to certain exceptions. The amount allocated to other comprehensive income (loss) is related solely to changes in the valuation allowance on items that are normally accounted for in other comprehensive income (loss) such as unrealized gains or losses on available-for-sale securities. In accordance with ASC 740, Income Taxes , a tax position is recognized as a benefit o nly if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. It is the Company’s policy to recognize interest and penalties related to income tax matters in income tax expense. The Company and its wholly-owned subsidiaries file a consolidated income tax return. Fair Value Measurements ASC 820 , Fair Value Measurements, which defines fair value, establishes a framework for measuring fair value in U.S. generally accepted accounting principles and expands disclosures about fair value measurements. ASC 820 applies only to fair-value measurements that are already required or permitted by other accounting standards. The definition of fair value focuses on the exit price, i.e., the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurem ent date, not the entry price, i.e., the price that would be paid to acquire the asset or received to assume the liability at the measurement date. The statement emphasizes that fair value is a market-based measurement; not an entity-specific measurement. Therefore, the fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. For more information related to fair value measurements, please refer to Note 17 , Fair Value. Sub sequent Events The Company has evaluated the effects of events or transactions through the date of this filing that have occurred subsequent to December 31, 2016 . The Company does not believe there are any material subsequent events that would require further recognition or disclosure .

Basic and Diluted Earnings Per

Basic and Diluted Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Basic and Diluted Earnings Per Share [Abstract]
Basic and Diluted Earnings Per Share Text Block	NOTE 2 : BASIC AND DILUTED NET EARNINGS PER SHARE Basic net earnings per share is computed by dividing net earnings by the weighted average common shares outstanding for the year. Diluted net earnings per share reflect the potential dilution that could occur upon exercise of securities or other rights for, or convertible into, shares of the Company’s common stock. As of December 31, 2016 and 2015 , respectively, the Company had no such securities or other rights issued or outstanding, and the refore, no dilutive effect to consider for the diluted net earnings per share calculation. The basic and diluted net earnings per share computations for the respective years are presented below. Year ended December 31 (Dollars in thousands, except share and per share data) 2016 2015 Basic and diluted: Net earnings $ 8,150 $ 7,858 Weighted average common shares outstanding 3,643,504 3,643,428 Net earnings per share $ 2.24 $ 2.16

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2016
Variable interest entities [Abstract]
Variable interest entity [Text Block]	NOTE 3 : VARIABLE INTEREST ENTITIES Generally, a variable interest entity (“VIE”) is a corporation, partnership, trust or other legal structure that does not have equity investors with substantive or proportional voting rights or has equity investors that do not provide sufficient financial resources for the entity to support its activ ities. At December 31, 2016 , the Company did not have any consolidated VIEs to disclose but did have one nonconsolidated VIE, discussed below. Trust Preferred Securities The Company owns the common stock of a subsidiary business trust, Auburn National Bancor poration Capital Trust I (the “Trust”), which issued mandatorily redeemable preferred capital securities (“trust preferred securities”) in 2003 in the aggregate of approximately $7.0 million at the time of issuance. The Trust meets the definition of a VIE of which the Company is not the primary beneficiary; the Trust’s only assets are junior subordinated debentures issued by the Company, which were acquired by the Trust using the proceeds from the issuance of the trust preferred securities and common stock. In October 2016, the Company purchased $4.0 million par amount of outstanding trust preferred securities issued by the Trust. These securities were sold by the FDIC, as receiver of a failed bank that had held the trust preferred securities. The Compan y used dividends from the Bank to purchase these trust preferred securities and has deemed an equivalent amount of the related junior subordinated debentures issued by the Company as no longer outstanding. The Company realized a pre-tax gain of $0.8 mil lion on the early extinguishment of debt in this transaction. The remaining junior subordinated debentures of approximately $3.2 million are included in long-term debt and the Company’s equity interest of $0.2 million in the Trust is included in other ass ets. Interest expense on the junior subordinated debentures is included in interest expense on long-term debt. The following table summarizes VIEs that are not consolidated by the Company as of December 31, 2016 . Maximum Loss Liability (Dollars in thousands) Exposure Recognized Classification Type: Trust preferred issuances N/A $ 3,217 Long-term debt

Restricted Cash Balances

Restricted Cash Balances	12 Months Ended
	Dec. 31, 2016
Restricted Cash Balances
Restricted Cash Balances Text Block	NOTE 4 : RESTRICTED CASH BALANCES Regulation D of the Federal Reserve Act requires that banks maintain reserve balances with the Federal Reserve Bank based principally on the type and amount of their deposits. As of December 31, 2016 and 2015 , the Bank did not have a required reserve balance at the Federal Reserve Bank.

Securities

Securities	12 Months Ended
	Dec. 31, 2016
Investments debt and equity securities [Abstract]
Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure Text Block	NOTE 5 : SECURITIES At December 31, 2016 and 2015 , respectively, all securities within the scope of ASC 320, Investments – Debt and Equity Securities were classified as available-for-sale. The fair value and amortized cost for securities available-for-sale by contractual maturity at December 31, 2016 and 2015 , respectively, are presented below. 1 year 1 to 5 5 to 10 After 10 Fair Gross Unrealized Amortized (Dollars in thousands) or less years years years Value Gains Losses Cost December 31, 2016 Agency obligations (a) $ 3,047 22,531 19,893 — 45,471 331 973 $ 46,113 Agency RMBS (a) — 972 16,171 110,644 127,787 551 1,805 129,041 State and political subdivisions — 2,480 10,210 57,624 70,314 1,509 734 69,539 Total available-for-sale $ 3,047 25,983 46,274 168,268 243,572 2,391 3,512 $ 244,693 December 31, 2015 Agency obligations (a) $ 5,000 25,852 19,463 9,770 60,085 384 518 $ 60,219 Agency RMBS (a) — 1,623 13,511 95,820 110,954 968 780 $ 110,766 State and political subdivisions — 497 12,094 58,057 70,648 3,022 7 $ 67,633 Total available-for-sale $ 5,000 27,972 45,068 163,647 241,687 4,374 1,305 $ 238,618 (a) Includes securities issued by U.S. government agencies or government sponsored entities. Securities with aggregate fair values of $137.2 million and $133.3 million at December 31, 2016 and 2015 , respectively, were pledged to secure public deposits, securities sold under agreements to repurchase, Federal Home Loan Bank (“FHLB”) advances, and for other purposes required or permitted by law. Included in other assets on the accompanying consolida ted balance sheets are cost-method investments. The carrying amounts of cost-method investments were $1.4 million at December 31, 2016 and 2015 , respectively. Cost-method investments primarily include non-marketable equity investments, such as FHLB of A tlanta stock and Federal Reserve Bank (“FRB”) stock. Gross Unrealized Losses and Fair Value The fair values and gross unrealized losses on securities at December 31, 2016 and 2015 , respectively, segregated by those securities that have been in an unrealized lo ss position for less than 12 months and 12 months or more are presented below. Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses December 31, 2016: Agency obligations $ 20,352 973 — — 20,352 $ 973 Agency RMBS 89,062 1,805 — — 89,062 1,805 State and political subdivisions 20,444 734 — — 20,444 734 Total $ 129,858 3,512 — — 129,858 $ 3,512 December 31, 2015: Agency obligations $ 8,157 2 24,444 516 32,601 $ 518 Agency RMBS 42,345 367 18,184 413 60,529 780 State and political subdivisions 267 1 969 6 1,236 7 Total $ 50,769 370 43,597 935 94,366 $ 1,305 For the securities in the previous table, the Company does not have the intent to sell and has determined it is not more likely than not that the Company will be required to sell the security before recovery of the amortized cost basis, which may be maturity. The Company assesses each security for credit impairment. For debt securities, the Company evaluates, where necessary, whether credit impairment exists by comparing the present value of the expected cash flows to the securities’ amortized cost ba sis. For cost-method investments, the Company evaluates whether an event or change in circumstances has occurred during the reporting period that may have a significant adverse effect on the fair value of the investment. In determining whether a loss is temporary, the Company considers all relevant information including: the length of time and the extent to which the fair value has been less than the amortized cost basis; adverse conditions specifically related to the security, an industry, or a geogr aphic area (for example, changes in the financial condition of the issuer of the security, or in the case of an asset-backed debt security, in the financial condition of the underlying loan obligors, including changes in technology or the discontinuance of a segment of the business that may affect the future earnings potential of the issuer or underlying loan obligors of the security or changes in the quality of the credit enhancement); the historical and implied volatility of the fair value of the security ; the payment structure of the debt security and the likelihood of the issuer being able to make payments that increase in the future; failure of the issuer of the security to make scheduled interest or principal payments; any changes to the rating of t he security by a rating agency; and recoveries or additional declines in fair value subsequent to the balance sheet date. Agency obligations The unrealized losses associated with agency obligations were primarily driven by changes in interest rates and not due to the credit quality of the securities. These securities were issued by U.S. government agencies or government-sponsored entities and did not have any credit losses given the explicit government guarantee or other government support. Agency resid ential mortgage-backed securities (“RMBS”) The unrealized losses associated with agency RMBS were primarily driven by changes in interest rates and not due to the credit quality of the securities. These securities were issued by U.S. government agencies or government-sponsored entities and did not have any credit losses given the explicit government guarantee or other government support . Securities of U.S. states and political subdivisions The unrealized losses associated with securities of U.S. state s and political subdivisions were primarily driven by changes in interest rates and were not due to the credit quality of the securities. Some of these securities are guaranteed by a bond insurer, but management did not rely on the guarantee in making its investment decision. These securities will continue to be monitored as part of the Company’s quarterly impairment analysis, but are expected to perform even if the rating agencies reduce the credit rating of the bond insurers. As a result, the Company expe cts to recover the entire amortized cost basis of these securities. Cost-method investments At December 31, 2016 , cost-method investments with an aggregate cost of $1.4 million were not evaluated for impairment because the Company did not identify any events or changes in circumstances that may have a significant adverse effect on the fair value of these cost-method investments. The carrying values of the Company’s investment securities could decline in the future if the financial condition of an issuer deteriorates and the Company determines it is probable that it will not recover the entire amortized cost basis for the security. As a result, there is a risk that significant other-than-temporary impairment charges may occur in the future. Other-Than-Temporarily Impaired Securities Credit-impaired debt securities are debt securities where the Company has written down the amortized cost basis of a security for other-than-temporary impairment and the credit component of the loss is recognized in earnings. At December 31, 2016 and 2015 , respectively, the Company had no credit-impaired debt securities and there were no additions or reductions in the credit loss component of credit-impaired debt securities during the years ended D ecember 31, 2016 and 2015 , respectively. Realized Gains and Losses The following table presents the gross realized gains and losses on sales related to securities. Year ended December 31 (Dollars in thousands) 2016 2015 Gross realized gains $ 166 16 Gross realized losses (387) — Realized (losses) gains, net $ (221) 16

Loan and Allowance for Loan Los

Loan and Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2016
Loans And Leases Receivable Disclosure [Abstract]
Loans and leases receivable disclosure [Text Block]	NOTE 6 : LOANS AND ALLOWANCE FOR LOAN LOSSES December 31 (In thousands) 2016 2015 Commercial and industrial $ 49,850 $ 52,479 Construction and land development 41,650 43,694 Commercial real estate: Owner occupied 49,745 46,602 Multifamily 46,998 45,264 Other 123,696 111,987 Total commercial real estate 220,439 203,853 Residential real estate: Consumer mortgage 65,564 70,009 Investment property 45,291 46,664 Total residential real estate 110,855 116,673 Consumer installment 8,712 10,220 Total loans 431,506 426,919 Less: unearned income (560) (509) Loans, net of unearned income $ 430,946 $ 426,410 Loans secured by real estate were approximately 86.4% of the total loan portfolio at December 31, 2016 . At December 31, 2016 , the Company’s geographic loan distribution was concentrated primarily in Lee County, Alabama and surrounding areas. In accordance with ASC 310, Receivables , a portfolio segment is defined as the level at which an entity develops and documents a systematic method for determining its allowance for loan losses. As part of the Company’s quarterly assessment of the allowance , the loan portfolio is disaggregated into the following portfolio segments: commercial and industrial, construction and land development, commercial real estate, residential real estate and consumer installment. Where appropriate, the Company’s loan port folio segments are further disaggregated into classes. A class is generally determined based on the initial measurement attribute, risk characteristics of the loan, and an entity’s method for monitoring and determining credit risk. The following describe the risk characteristics relevant to each of the portfolio segments. Commercial and industrial (“C&I”) — includes loans to finance business operations, equipment purchases, or other needs for small and medium-sized commercial customers. Also included in t his category are loans to finance agricultural production. Generally the primary source of repayment is the cash flow from business operations and activities of the borrower. Construction and land development (“C&D”) — includes both loans and credit line s for the purpose of purchasing, carrying and developing land into commercial developments or residential subdivisions. Also included are loans and lines for construction of residential, multi-family and commercial buildings. Generally the primary source o f repayment is dependent upon the sale or refinance of the real estate collateral. Commercial real estate (“CRE”) — includes loans disaggregated into three classes: (1) owner occupied (2) multi-family and (3) other. Owner occupied – includes loans secur ed by business facilities to finance business operations, equipment and owner-occupied facilities primarily for small and medium-sized commercial customers. Generally the primary source of repayment is the cash flow from business operations and activities of the borrower, who owns the property. Multi family – primarily includes loans to finance income-producing multi-family properties. Loans in this class include loans for 5 or more unit residential property and apartments leased to residents. Generally, the primary source of repayment is dependent upon income generated from the real estate collateral. The underwriting of these loans takes into consideration the occupancy and rental rates, as well as the financial health of the borrower. Other – primarily includes loans to finance income-producing commercial properties. Loans in this class include loans for neighborhood retail centers, hotels, medical and professional offices, single retail stores, industrial buildings, and warehouses leased generally to local businesses and residents. Generally the primary source of repayment is dependent upon income generated from the real estate collateral. The underwriting of these loans takes into consideration the occupancy and rental rates as well as the financial health of the borrower. Residential real estate (“RRE”) — includes loans disaggregated into two classes: (1) consumer mortgage and (2) investment property. Consumer mortgage – primarily include s first or second lien mortgages a nd home equity lines to consumers that are secured by a primary residence or second home. These loans are underwritten in accordance with the Bank’s general loan policies and procedures which require, among other things, proper documentation of each borrow er’s financial condition, satisfactory cre dit history and property value. Investment property – primarily includes loans to finance income-producing 1-4 family residential properties. Generally the primary source of repayment is dependent upon income gene rated from leasing the property securing the loan. The underwriting of these loans takes into consideration the rental rates as well as the fi nancial health of the borrower. Consumer installment — includes loans to individuals both secured by personal property and unsecured. Loans include personal lines of credit, automobile loans, and other retail loans. These loans are underwritten in accordance with the Bank’s general loan policies and procedures which require, among other things, proper documentat ion of each borrower’s financial condition, satisfactory credit history, and if applicable, property value. The following is a summary of current, accruing past due and nonaccrual loans by portfolio class as of December 31, 2016 and 2015 . Accruing Accruing Total 30-89 Days Greater than Accruing Non- Total (In thousands) Current Past Due 90 days Loans Accrual Loans December 31, 2016: Commercial and industrial $ 49,747 66 — 49,813 37 $ 49,850 Construction and land development 41,223 395 — 41,618 32 41,650 Commercial real estate: Owner occupied 49,564 43 — 49,607 138 49,745 Multifamily 46,998 — — 46,998 — 46,998 Other 121,608 199 — 121,807 1,889 123,696 Total commercial real estate 218,170 242 — 218,412 2,027 220,439 Residential real estate: Consumer mortgage 64,059 1,282 — 65,341 223 65,564 Investment property 45,243 19 — 45,262 29 45,291 Total residential real estate 109,302 1,301 — 110,603 252 110,855 Consumer installment 8,652 38 — 8,690 22 8,712 Total $ 427,094 2,042 — 429,136 2,370 $ 431,506 December 31, 2015: Commercial and industrial $ 52,387 49 — 52,436 43 $ 52,479 Construction and land development 43,111 — — 43,111 583 43,694 Commercial real estate: Owner occupied 46,372 — — 46,372 230 46,602 Multifamily 45,264 — — 45,264 — 45,264 Other 110,467 — — 110,467 1,520 111,987 Total commercial real estate 202,103 — — 202,103 1,750 203,853 Residential real estate: Consumer mortgage 68,579 1,105 — 69,684 325 70,009 Investment property 46,435 229 — 46,664 — 46,664 Total residential real estate 115,014 1,334 — 116,348 325 116,673 Consumer installment 10,179 28 — 10,207 13 10,220 Total $ 422,794 1,411 — 424,205 2,714 $ 426,919 The gross interest income which would have been recorded under the original terms of those nonaccrual loans had they been accruing interest, amounted to approximately $107 thousand and $133 thousand for the years ended December 31, 2016 and 2015 , respectively. Allowance for Loan Losses The allowance for loan losses as of and for the years ended December 31, 2016 and 2015 , is presented below. Year ended December 31 (In thousands) 2016 2015 Beginning balance $ 4,289 $ 4,836 Charged-off loans (540) (1,114) Recovery of previously charged-off loans 1,379 367 Net charge-offs 839 (747) Provision for loan losses (485) 200 Ending balance $ 4,643 $ 4,289 The Company assesses the adequacy of its allowance for loan losses prior to the end of each calendar quarter. The level of the allowance is based upon management’s evaluation of the loan portfolio, past loan loss experience, current asset quality trends, known and inherent risks in the portfolio, adverse situations that may affect a borrower’s ability to repay (including the timing of future payment), the estimated value of any underlying collateral, composition of the loan portfolio, economic conditions, industry and peer bank loan loss rates and other pertinent factors, including regulatory recommendations. This evaluation is inherently subjective as it requires material estimates including the amounts and timing of future cash flows expected to be receiv ed on impaired loans that may be susceptible to significant change. Loans are charged off, in whole or in part, when management believes that the full collectability of the loan is unlikely. A loan may be partially charged-off after a “confirming event” ha s occurred which serves to validate that full repayment pursuant to the terms of the loan is unlikely. The Company deems loans impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts du e according to the contractual terms of the loan agreement. Collection of all amounts due according to the contractual terms means that both the interest and principal payments of a loan will be collected as scheduled in the loan agreement. An impairment allowance is recognized if the fair value of the loan is less than the recorded investment in the loan. The impairment is recognized through the allowance. Loans that are impaired are recorded at the present value of expected future cash flows discounted at the loan’s effective interest rate, or if the loan is collateral dependent, impairment measurement is based on the fair value of the collateral, less estimated disposal costs. The level of allowance maintained is believed by management to be adequate to absorb probable losses inherent in the portfolio at the balance sheet date. The allowance is increased by provisions charged to expense and decreased by charge-offs, net of recoveries of amounts previously charged-off. In assessing the adequacy of the allowance, the Company also considers the results of its ongoing internal, independent loan review process. The Company’s loan review process assists in determining whether there are loans in the portfolio whose credit quality has weakened over time and e valuating the risk characteristics of the entire loan portfolio. The Company’s loan review process includes the judgment of management, the input from our independent loan reviewers, and reviews that may have been conducted by bank regulatory agencies as p art of their examination process. The Company incorporates loan review results in the determination of whether or not it is probable that it will be able to collect all amounts due according to the contractual terms of a loan. As part of the Company’s qu arterly assessment of the allowance, management divides the loan portfolio into five segments: commercial and industrial, construction and land development, commercial real estate, residential real estate, and consumer installment loans. The Company analyz es each segment and estimates an allowance allocation for each loan segment. The allocation of the allowance for loan losses begins with a process of estimating the probable losses inherent for these types of loans. The estimates for these loans are esta blished by category and based on the Company’s internal system of credit risk ratings and historical loss data. The estimated loan loss allocation rate for the Company’s internal system of credit risk grades is based on its experience with similarly graded loans. For loan segments where the Company believes it does not have sufficient historical loss data, the Company may make adjustments based, in part, on loss rates of peer bank groups. At December 31, 2016 and 2015 , and for the years then ended, th e Company adjusted its historical loss rates for the commercial real estate portfolio segment based, in part, on loss rates of peer bank groups. The estimated loan loss allocation for all five loan portfolio segments is then adjusted for management’s esti mate of probable losses for several “qualitative and environmental” factors. The allocation for qualitative and environmental factors is particularly subjective and does not lend itself to exact mathematical calculation. This amount represents estimated pr obable inherent credit losses which exist, but have not yet been identified, as of the balance sheet date, and are based upon quarterly trend assessments in delinquent and nonaccrual loans, credit concentration changes, prevailing economic conditions, chan ges in lending personnel experience, changes in lending policies or procedures and other influencing factors. These qualitative and environmental factors are considered for each of the five loan segments and the allowance allocation, as determined by the p rocesses noted above, is increased or decreased based on the incremental assessment of these factors. The Company regularly re-evaluates its practices in determining the allowance for loan losses. Beginning with the quarter ended December 31, 2016, the Co mpany implemented certain refinements to its allowance for loan losses methodology in order to better capture the effects of the most recent economic cycle on the Company’s loan loss experience. First, the Company increased its look-back period for calcula ting average losses for all loan segments to 31 quarters. Prior to December 31, 2016, the Company calculated average losses for all loan segments using a rolling 20 quarter look-back period. The Company will likely continue to increase its look-back period to incorporate the effects of at least one economic downturn in its loss history. The Company believes the extension of its look-back period is appropriate due to the risks inherent in the loan portfolio. Absent this extension, the early cycle periods in which the Company experienced significant losses would be excluded from the determination of the allowance for loan losses and its balance would decrease. Second, the Company increased the range of basis point adjustments allowed for qualitative and enviro nmental factors to approximately 200 basis points, an increase of 65 basis points, or 48%, compared to the 135 basis point range used prior to December 31, 2016. After performing sensitivity testing of its calculation of the allowance for loan losses, the Company determined that it should increase the range of basis points allowed for qualitative and environmental factors in order to provide sufficient latitude in determining estimated probable credit losses during periods of economic stress. Third, the Com pany reduced the percentage allocation for qualitative and environmental factors on a weighted average basis to 21% of total basis points allocable at December 31, 2016, compared to 25% of total basis points allocable at September 30, 2016. The Company bel ieves a decrease in the percentage allocation of qualitative environmental factors on a weighted average basis was appropriate due to the extension of its look-back period described above. If the Company did not make the changes described above, the Compan y’s calculated allowance for loan loss allocation would have decreased by approximately $0.9 million, or 0.21% of total loans, at December 31, 2016. Other than the changes discussed above, the Company has not made any material changes to its methodology th at would impact the calculation of the allowance for loan losses or provision for loan losses for the periods included in the accompanying consolidated balance sheets and statements of earnings. The following table details the changes in the allowance f or loan losses by portfolio segment for the years ended December 31, 2016 and 2015 . (in thousands) Commercial and industrial Construction and land Development Commercial Real Estate Residential Real Estate Consumer Installment Total Balance, December 31, 2014 $ 639 974 1,928 1,119 176 $ 4,836 Charge-offs (100) — (866) (89) (59) (1,114) Recoveries 22 17 — 313 15 367 Net (charge-offs) recoveries (78) 17 (866) 224 (44) (747) Provision (38) (322) 817 (284) 27 200 Balance, December 31, 2015 $ 523 669 1,879 1,059 159 $ 4,289 Charge-offs (97) — (194) (182) (67) (540) Recoveries 29 1,212 — 127 11 1,379 Net (charge-offs) recoveries (68) 1,212 (194) (55) (56) 839 Provision 85 (1,069) 386 103 10 (485) Balance, December 31, 2016 $ 540 812 2,071 1,107 113 $ 4,643 The following table presents an analysis of the allowance for loan losses and recorded investment in loans by portfolio segment and impairment methodology as of December 31, 2016 and 2015 . Collectively evaluated (1) Individually evaluated (2) Total Allowance Recorded Allowance Recorded Allowance Recorded for loan investment for loan investment for loan investment (In thousands) losses in loans losses in loans losses in loans December 31, 2016: Commercial and industrial $ 540 49,835 — 15 540 49,850 Construction and land development 812 41,618 — 32 812 41,650 Commercial real estate 2,040 218,356 31 2,083 2,071 220,439 Residential real estate 1,107 110,855 — — 1,107 110,855 Consumer installment 113 8,712 — — 113 8,712 Total $ 4,612 429,376 31 2,130 4,643 431,506 December 31, 2015: Commercial and industrial $ 523 52,431 — 48 523 52,479 Construction and land development 669 43,111 — 583 669 43,694 Commercial real estate 1,758 201,077 121 2,776 1,879 203,853 Residential real estate 1,059 116,673 — — 1,059 116,673 Consumer installment 159 10,220 — — 159 10,220 Total $ 4,168 423,512 121 3,407 4,289 426,919 (1) Represents loans collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies (formerly FAS 5), and pursuant to amendments by ASU 2010-20 regarding allowance for unimpaired loans. (2) Represents loans individually evaluated for impairment in accordance with ASC 310-30, Receivables (formerly FAS 114), and pursuant to amendments by ASU 2010-20 regarding allowance for impaired loans. Credit Quality Indicators The credit quality of the loan portfolio is summarized no less frequently than quarterly using categories similar to the standard asset classification system used by the federal banking agencies. The following table presents credit quality indicators for the loan portfolio segments and classes. These categories are utilized to develop the associated allowance for loan losses using historical losses adjusted for qualitative and environmental factors and are defined as follows: Pass – loans which are well protected by the current net worth and paying capacity of the obligor (or guarantors, if any) or by the fair value, less cost to acquire and sell, of any underlying collateral. Special Mention – loans with potential weakness that may, if not reversed or corrected, weaken the credit or inadequately protect the Company’s position at some future date. These loans are not adversely classified and do not expose an institution to sufficient risk to warrant an adverse classification. Substandard Accruing – loa ns that exhibit a well-defined weakness which presently jeopardizes debt repayment, even though they are currently performing. These loans are characterized by the distinct possibility that the Company may incur a loss in the future if these weaknesses are not corrected. Nonaccrual – includes loans where management has determined that full payment of principal and interest is in doubt. (In thousands) Pass Special Mention Substandard Accruing Nonaccrual Total loans December 31, 2016 Commercial and industrial $ 49,558 22 233 37 $ 49,850 Construction and land development 41,165 113 340 32 41,650 Commercial real estate: Owner occupied 48,788 414 405 138 49,745 Multifamily 46,998 — — — 46,998 Other 121,326 32 449 1,889 123,696 Total commercial real estate 217,112 446 854 2,027 220,439 Residential real estate: Consumer mortgage 59,450 2,613 3,278 223 65,564 Investment property 44,109 105 1,048 29 45,291 Total residential real estate 103,559 2,718 4,326 252 110,855 Consumer installment 8,580 20 90 22 8,712 Total $ 419,974 3,319 5,843 2,370 $ 431,506 December 31, 2015 Commercial and industrial $ 48,038 4,075 323 43 $ 52,479 Construction and land development 42,458 60 593 583 43,694 Commercial real estate: Owner occupied 45,772 381 219 230 46,602 Multifamily 45,264 — — — 45,264 Other 110,159 36 272 1,520 111,987 Total commercial real estate 201,195 417 491 1,750 203,853 Residential real estate: Consumer mortgage 64,502 1,964 3,218 325 70,009 Investment property 45,399 112 1,153 — 46,664 Total residential real estate 109,901 2,076 4,371 325 116,673 Consumer installment 10,038 55 114 13 10,220 Total $ 411,630 6,683 5,892 2,714 $ 426,919 Impaired loans The following table presents details related to the Company’s impaired loans. Loans which have been fully charged-off do not appear in the following table. The related allowance generally represents the following components which correspond to impaired loans: Individually evaluated impaired loans equal to or greater than $500 thousand secured by real estate (nonaccrual construction and land development, commercial real estate, and residential real estate). Individually evaluated impaired loans equal to or greater than $250 thousand not secured by real estate (nonaccrual commercial and industrial and consumer loans). The following table sets forth certain information regarding the Company’s impaired loans that were individua lly evaluated for impairment at December 31, 2016 and 2015 . December 31, 2016 (In thousands) Unpaid principal balance (1) Charge-offs and payments applied (2) Recorded investment (3) Related allowance With no allowance recorded: Commercial and industrial $ 15 — 15 Construction and land development 140 (108) 32 Commercial real estate: Other 2,874 (984) 1,890 Total commercial real estate 2,874 (984) 1,890 Total $ 3,029 (1,092) 1,937 With allowance recorded: Commercial real estate: Owner occupied 193 — 193 31 Total commercial real estate 193 — 193 31 Total $ 193 — 193 $ 31 Total impaired loans $ 3,222 (1,092) 2,130 $ 31 (1) Unpaid principal balance represents the contractual obligation due from the customer. (2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been applied against the outstanding principal balance. (3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before any related allowance for loan losses. December 31, 2015 (In thousands) Unpaid principal balance (1) Charge-offs and payments applied (2) Recorded investment (3) Related allowance With no allowance recorded: Commercial and industrial $ 48 — 48 Construction and land development 2,582 (1,999) 583 Commercial real estate: Owner occupied 308 (78) 230 Other 2,136 (617) 1,519 Total commercial real estate 2,444 (695) 1,749 Total $ 5,074 (2,694) 2,380 With allowance recorded: Commercial real estate: Owner occupied $ 1,027 — 1,027 $ 121 Total commercial real estate 1,027 — 1,027 121 Total $ 1,027 — 1,027 $ 121 Total impaired loans $ 6,101 (2,694) 3,407 $ 121 (1) Unpaid principal balance represents the contractual obligation due from the customer. (2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been applied against the outstanding principal balance. (3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before any related allowance for loan losses. The following table provides the average recorded investment in impaired loans and the amount of interest income recognized on impaired loans after impairment by portfolio segment and class. Year ended December 31, 2016 Year ended December 31, 2015 Average Total interest Average Total interest recorded income recorded income (In thousands) investment recognized investment recognized Impaired loans: Commercial and industrial $ 31 2 $ 60 4 Construction and land development 94 — 603 — Commercial real estate: Owner occupied 699 31 1,328 62 Other 1,687 — 911 18 Total commercial real estate 2,386 31 2,239 80 Residential real estate: Consumer mortgages — — 349 173 Investment property — — 70 76 Total residential real estate — — 419 249 Total $ 2,511 33 $ 3,321 333 Interest income recognized for 2015 included interest recoveries of $225 thousand related to two impaired residential real estate loans that paid off in June 2015. Excluding the interest recoveries on these two loans, interest income recognized on impaired loans for 2015 would have been $108 thousand. Troubled Debt Restructurings Impaired loans also include troubled debt restructurings (“TDRs”). In the normal course of business, management may grant concessions to borrowers who are experiencing financial difficulty. A concession may include, but is not limited to, delays in required payments of principal and interest for a specified period, reduction of the stated interest rate of the loan, reduction of accrued interest, extension of the maturit y date or reduction of the face amount or maturity amount of the debt. A concession has been granted when, as a result of the restructuring, the Bank does not expect to collect all amounts due, including interest at the original stated rate. A concession may have also been granted if the debtor is not able to access funds elsewhere at a market rate for debt with similar risk characteristics as the restructured debt. In determining whether a loan modification is a TDR, the Company considers the individual facts and circumstances surrounding each modification. In determining the appropriate accrual status at the time of restructure, the Company evaluates whether a restructured loan has adequate collateral protection, among other factors. Similar to oth er impaired loans, TDRs are measured for impairment based on the present value of expected payments using the loan’s original effective interest rate as the discount rate, or the fair value of the collateral, less selling costs if the loan is collateral de pendent. If the recorded investment in the loan exceeds the measure of fair value, impairment is recognized by establishing a valuation allowance as part of the allowance for loan losses or a charge-off to the allowance for loan losses. In periods subsequ ent to the modification, all TDRs are evaluated individually, including those that have payment defaults, for possible impairment. The following is a summary of accruing and nonaccrual TDRs and the related loan losses, by portfolio segment and class. TDRs Related (In thousands) Accruing Nonaccrual Total Allowance December 31, 2016 Commercial and industrial $ 15 — 15 $ — Construction and land development — 32 32 — Commercial real estate: Owner occupied 193 — 193 31 Other — 1,818 1,818 — Total commercial real estate 193 1,818 2,011 31 Total $ 208 1,850 2,058 $ 31 December 31, 2015 Commercial and industrial $ 48 — 48 $ — Construction and land development — 582 582 — Commercial real estate: Owner occupied 1,027 230 1,257 121 Total commercial real estate 1,027 230 1,257 121 Total $ 1,075 812 1,887 $ 121 At December 31, 2016 , there were no significant outstanding commitments to advance additional funds to customers whose loans had been restructured. The following table summarizes loans modified in a TDR during the respective years both before and after modification. Pre- Post- modification modification outstanding outstanding Number of recorded recorded ($ in thousands) contracts investment investment December 31, 2016 Commercial real estate: Other 3 $ 3,147 3,137 Total commercial real estate 3 3,147 3,137 Total 3 $ 3,147 3,137 December 31, 2015 Commercial and industrial 1 $ 61 66 Construction and land development 1 116 113 Commercial real estate: Owner occupied 1 216 218 Other 1 592 592 Total commercial real estate 2 808 810 Total 4 $ 985 989 The majority of the loans modified in a TDR during the years ended December 31, 2016 and 2015 , respectively, included delays in required payments of principal and/or interest or where the only concession granted by the Company was that the interest rate at renewal was not considered to be a market rate. The Company had no TDRs with a payment default during 201 6. The following table summarizes the recorded investment in loans modified in a TDR within the previous twelve months for which there was a payment default (defined as 90 days or more past due) during 2015 . Number of Recorded ($ in thousands) Contracts investment (1) December 31, 2015 Commercial real estate: Owner occupied 1 $ 262 Total commercial real estate 1 262 Residential real estate: Investment property 1 150 Total residential real estate 1 150 Total 2 $ 412 (1) Amount as of applicable month end during the respective year for which there was a payment default.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2016
Premises and Equipment [Abstract]
Premises and Equipment Text Block	NOTE 7 : PREMISES AND EQUIPMENT Premises and equipment at December 31, 2016 and 2015 is presented below December 31 (Dollars in thousands) 2016 2015 Land $ 7,231 6,106 Buildings and improvements 9,478 9,448 Furniture, fixtures, and equipment 3,210 3,159 Total premises and equipment 19,919 18,713 Less: accumulated depreciation (7,317) (6,847) Premises and equipment, net $ 12,602 11,866 Depreciation expense was approximately $ 470 thousand and $475 thousand for the years ended December 31, 2016 and 2015 , respectively , and is a component of net occupancy and equipment expense in the consolidated statements of earn ings .

Mortgage Servicing Rights, Net

Mortgage Servicing Rights, Net	12 Months Ended
	Dec. 31, 2016
Mortgage Servicing [Abstract]
Transfers and Servicing of Financial Assets [Text Block]	NOTE 8 : MORTGAGE SERVICING RIGHTS, NET Mortgage servicing rights (“MSRs”) are recognized based on the fair value of the servicing rights on the date the corresponding mortgage loans are sold. An estimate of the Company’s MSRs is determined using assumptions that market participants would use i n estimating future net servicing income, including estimates of prepayment speeds, discount rate, default rates, cost to service, escrow account earnings, contractual servicing fee income, ancillary income, and late fees. Subsequent to the date of transf er, the Company has elected to measure its MSRs under the amortization method. Under the amortization method, MSRs are amortized in proportion to, and over the period of, estimated net servicing income. Servicing fee income is recorded net of related amor tization expense and recognized in earnings as part of mortgage lending income. The Company has recorded MSRs related to loans sold without recourse to Fannie Mae. The Company generally sells conforming, fixed-rate, closed-end, residential mortgages to Fannie Mae. MSRs are included in other assets on the accompanying consolidated balance sheets. The Company evaluates MSRs for impairment on a quarterly basis. Impairment is determined by stratifying MSRs into groupings based on predominant risk charac teristics, such as interest rate and loan type. If, by individual stratum, the carrying amount of the MSRs exceeds fair value, a valuation allowance is established. The valuation allowance is adjusted as the fair value changes. Changes in the valuation allowance are recognized in earnings as a component of mortgage lending income. The following table details the changes in amortized MSRs and the related valuation allowance for the years ended December 31, 2016 and 2015 . Year ended December 31 (Dollars in thousands) 2016 2015 Beginning balance $ 2,316 2,388 Additions, net 324 529 Amortization expense (687) (654) Change in valuation allowance (1) 53 Ending balance $ 1,952 2,316 Valuation allowance included in MSRs, net: Beginning of period $ — 53 End of period 1 — Fair value of amortized MSRs: Beginning of period $ 3,086 3,238 End of period 2,678 3,086 Data an d assumptions used in the fair value calculation related to MSRs at December 31, 2016 and 2015 , respectively, are presented below. December 31 (Dollars in thousands) 2016 2015 Unpaid principal balance $ 338,434 358,928 Weighted average prepayment speed (CPR) 10.9 % 10.0 Discount rate (annual percentage) 10.0 % 10.0 Weighted average coupon interest rate 3.8 % 3.9 Weighted average remaining maturity (months) 257 266 Weighted average servicing fee (basis points) 25.0 25.0 At December 31 , 2016 , the weighted average amortization period for MSRs was 5.9 years. Estimated amortization expense for each of the next five years is presented below. (Dollars in thousands) December 31, 2016 2017 $ 424 2018 356 2019 301 2020 255 2021 215

Deposits

Deposits	12 Months Ended
	Dec. 31, 2016
Deposits:
Deposits Text Block	NOTE 9 : DEPOSITS At December 31, 2016 , the scheduled maturities of certificates of deposit and other time deposits are presented below. (Dollars in thousands) December 31, 2016 2017 $ 110,428 2018 43,311 2019 37,817 2020 9,347 2021 7,234 Total certificates of deposit and other time deposits $ 208,137 Additionally, at December 31, 2016 and 2015 , approximately $59.5 million and $59.6 million, respectively, of certificates of deposit and other time deposits were issued in denominations of $250 thousand or greater. At December 31, 2016 and 2015 , the amount of deposit accounts in overdraft status that were reclassified to loans on the accompanying consolidated balance sheets was not material.

Short-term Borrowings

Short-term Borrowings	12 Months Ended
	Dec. 31, 2016
Short-term Debt:
Short-term Debt Text Block	NOTE 10 : SHORT-TERM BORROWINGS At December 31, 2016 and 2015 , the composition of short-term borrowings is presented below. 2016 2015 Weighted Weighted (Dollars in thousands) Amount Avg. Rate Amount Avg. Rate Federal funds purchased: As of December 31 $ — — $ — — Average during the year 14 1.21 % 16 0.90 % Maximum outstanding at any month-end — — Securities sold under agreements to repurchase: As of December 31 $ 3,366 0.50 % $ 2,951 0.50 % Average during the year 2,969 0.50 % 3,585 0.50 % Maximum outstanding at any month-end 3,507 4,806 Federal funds purchased represent unsecured overnight borrowings from other financial institutions by the Bank. The Bank had available federal fund lines totaling $41.0 million with none outstanding at December 31, 2016 . Securities sold under agreements to repurchase represent short-term borrowings with maturities less than one year collateralized by a portion of the Company’s securities portfolio. Securities with an aggregate carrying value of $6.0 million and $6.3 million at December 31, 2016 and 2015 , respectively, were pledged to secure securities sold under agreements to repurchase.

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2016
Long-term debt:
Long-term Debt Text Block	NOTE 11 : LONG-TERM DEBT At December 31, 2016 and 2015 , the composition of long-term debt is presented below. 2016 2015 Weighted Weighted (Dollars in thousands) Amount Avg. Rate Amount Avg. Rate Subordinated debentures, due 2033 $ 3,217 3.88 % $ 7,217 3.63 % Total long-term debt $ 3,217 3.88 % $ 7,217 3.63 % The Company formed Auburn National Bancorporation Capital Trust I (the “Trust”) , a wholly-owned statutory business trust, in 2003. The Trust issued $7.0 milli on of trust preferred securities that were sold to third parties. The proceeds from the sale of the trust preferred securities and trust common securities that we hold, were used to purchase junior subordinated debentures of $7.2 million from the Company, which are presented as long-term debt in the consolidated balance sheets and qualify for inclusion in Tier 1 capital for regulatory capital purposes, subject to certain limitations. The debentures mature on December 31, 2033 and have been redeemable sinc e December 31, 2008. In Oct ober 2016, the Company purchased $4.0 million par amount of outstanding trust preferred securities issued by the Trust. These securities were sold by the FDIC, as receiver of a failed bank that held the trust preferred securi ties. The Company used dividends from the Bank to purchase these trust preferred securities and has deemed an equivalent amount of the related subordinated debentures issued by the company as no longer outstanding. The Company realized a pre-tax gain o f $0.8 million on the early extinguishment of debt in this transaction. Following the transaction, the Company had $3.2 million in junior subordinated debentures related to $3.0 million of trust preferred securities outstanding. The amount related to the t r ust preferred securities remains included in the Company’s Tier 1 c apital for regulatory purposes. The following is a schedule of contractual maturities of long-term debt: (Dollars in thousands) 2017 2018 2019 2020 2021 Thereafter Total Subordinated debentures — — — — — 3,217 3,217 Total long-term debt $ — — — — — 3,217 3,217

Other Comprehensive Income Disc

Other Comprehensive Income Disclosure	12 Months Ended
	Dec. 31, 2016
Other Comprehensive Income Loss [Abstract]
Other Comprehensive Income (Loss) [Text Block]	NOTE 12 : OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive income is defined as the change in equity from all transactions other than those with stockholders , and it includes net earnings and other comprehensive income (loss). Other comprehensive income (loss) for the years ended December 31, 2016 and 2015 , is presented below. Pre-tax Tax benefit Net of (In thousands) amount (expense) tax amount 2016: Unrealized net holding loss on all other securities $ (4,412) 1,628 (2,784) Reclassification adjustment for net loss on securities recognized in net earnings 221 (82) 139 Other comprehensive loss $ (4,191) 1,546 (2,645) 2015: Unrealized net holding loss on all other securities $ (785) 289 (496) Reclassification adjustment for net gain on securities recognized in net earnings (16) 6 (10) Other comprehensive loss $ (801) 295 (506)

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Taxes
Income Taxes Text Block	NOTE 13 : INCOME TAXES For the years ended December 31, 2016 and 2015 the components of income tax expense from continuing operations are presented below. Year ended December 31 (Dollars in thousands) 2016 2015 Current income tax expense: Federal $ 2,143 1,805 State 498 395 Total current income tax expense 2,641 2,200 Deferred income tax expense (benefit): Federal 464 586 State (3) 34 Total deferred income tax expense 461 620 Total income tax expense $ 3,102 2,820 Total income tax expense differs from the amounts computed by applying the statutory federal income tax rate of 34% to earnings before income taxes. A reconciliation of the differences for the years ended December 31, 2016 and 2015 , is presented below. 2016 2015 Percent of Percent of pre-tax pre-tax (Dollars in thousands) Amount earnings Amount earnings Earnings before income taxes $ 11,252 10,678 Income taxes at statutory rate 3,826 34.0 % 3,631 34.0 % Tax-exempt interest (857) (7.6) (873) (8.1) State income taxes, net of federal tax effect 325 2.9 280 2.6 Bank-owned life insurance (155) (1.4) (254) (2.4) Other (37) (0.3) 36 0.3 Total income tax expense $ 3,102 27.6 % 2,820 26.4 % The Company had net deferred tax assets of $1.3 million and $0.2 million at December 31, 2016 and 2015 , respectively, included in other assets on the consolidated balance sheets . The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2016 and 2015 are presented below: December 31 (Dollars in thousands) 2016 2015 Deferred tax assets: Allowance for loan losses $ 1,713 1,583 Unrealized loss on securities 414 — Write-downs on other real estate owned — 20 Tax credit carry-forwards — 484 Other 316 519 Total deferred tax assets 2,443 2,606 Deferred tax liabilities: Premises and equipment 205 219 Unrealized gain on securities — 1,132 Originated mortgage servicing rights 721 855 Other 237 205 Total deferred tax liabilities 1,163 2,411 Net deferred tax asset $ 1,280 195 A valuation allowance is recognized for a deferred tax asset if, based on the weight of available evidence, it is more-likely-than-not that some portion of the entire deferred tax asset will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax pl anning strategies in making this assessment. Based upon the level of historical taxable income and projection for future taxable income over the periods which the temporary differences resulting in the remaining deferred tax assets are deductible, manageme nt believes it is more-likely-than-not that the Company will realize the benefits of these deductible differences at December 31, 2016 . The amount of the deferred tax assets considered realizable, however, could be reduced in the near term if estimates of future taxable income are reduced. The change in the net deferred tax asset for the years ended December 31, 2016 and 2015 , is presented below. Year ended December 31 (Dollars in thousands) 2016 2015 Net deferred tax asset: Balance, beginning of year $ 195 519 Deferred tax expense related to continuing operations (461) (620) Stockholders' equity, for accumulated other comprehensive loss 1,546 296 Balance, end of year $ 1,280 195 ASC 740, Income Taxes, defines the threshold for recognizing the benefits of tax return positions in the financial statements as “more-likely-than-not” to be sustained by the taxing authority. This section also provides guidance on the de-recognition, measurement, and classifi cation of income tax uncertainties in interim periods. As of December 31, 2016 , the Company had no unrecognized tax benefits related to federal or state income tax matters. The Company does not anticipate any material increase or decrease in unrecognized tax benefits during 2017 relative to any tax positions taken prior to December 31, 2016 . As of December 31, 2016 , the Company has accrued no interest and no penalties related to uncertain tax positions. It is the Company’s policy to recognize i nterest and penalties related to income tax matters in income tax expense. The Company and its subsidiaries file consolidated U.S. federal and State of Alabama income tax returns. The Company is currently open to audit under the statute of limitations by the Internal Revenue Service and the State of Alabama for the years ended December 31, 2013 through 2016 .

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2016
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	NOTE 14 : EMPLOYEE BENEFIT PLAN The Company has a 401(k) Plan that covers substantially all employees. Participants may contribute up to 10% of eligible compensation subject to certain limits based on federal tax laws. The Company’s matching contributions to the Plan are determined by the board of directors. Participants become 20% vested in their accounts after two years of service and 100% vested after six years of service. Company matching contributions to the Plan were $124 thousand and $116 thousand for the years ended December 31, 2016 and 2015 , respectively, and are included in salaries and benefits expense .

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2016
Derivative instruments and hedging activities disclosure abstract
Derivative Instruments And Hedging Activities Disclosure Text Block	NOTE 15 : DERIVATIVE INSTRUMENTS Financial derivatives are reported at fair value in other assets or other liabilities on the accompanying consolidated balance s heets. The accounting for changes in the fair value of a derivative depends on whether it has been designated and qualifies as part of a hedging relationship. For derivatives not designated as part of a hedging relationship, the gain or loss is recognized in current earnings within other noninterest income on the accompanying consolidated s tatements of e arnings. From time to time, the Company may enter into interest rate swaps (“swaps”) to facilitate customer transact ions and meet their financing needs. Upon entering into these swaps, the Company enters into offsetting positions in order to min imize the risk to the Company. These swaps qualify as derivatives, but are not designated as hedging instruments. At December 31, 2016 and December 31, 2015 , the Company had no derivative contracts to assist in managing its own interest rate sensitivity. Interest rate swa p agreements involve the risk of dealing with counterparties and their ability to meet contractual terms. When the fair value of a derivative instrument is positive, this generally indicates that the counterparty or customer owes the Company, and results i n credit risk to the Company. When the fair value of a derivative instrument contract is negative, the Company owes the customer or counterparty and therefore, has no credit risk. A summary of the Company’s interest rate swaps as of and for the years end ed December 31, 2016 and 2015 is presented below. Other Other Other noninterest Assets Liabilities income Estimated Estimated Gains (Dollars in thousands) Notional Fair Value Fair Value (Losses) December 31, 2016: Pay fixed / receive variable $ 3,967 — 241 $ 199 Pay variable / receive fixed 3,967 241 — (199) Total interest rate swap agreements $ 7,934 241 241 $ — December 31, 2015: Pay fixed / receive variable $ 4,317 — 440 $ 194 Pay variable / receive fixed 4,317 440 — (194) Total interest rate swap agreements $ 8,634 440 440 $ —

Commitments and Contigent Liabi

Commitments and Contigent Liabilities	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	NOTE 16 : COMMITMENT S AND CONTINGEN T LIABILITIES Credit-Related Financial Instruments The Company is party to credit related financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated bala nce sheets. The Company’s exposure to credit loss is represented by the contractual amount of these commitments. The Company follows the same credit policies in making commitments as it does for on-balance sheet instruments. At December 31, 2016 and 2015 , the following financial instruments were outstanding whose contract amount represents credit risk: December 31 (Dollars in thousands) 2016 2015 Commitments to extend credit $ 45,979 $ 52,230 Standby letters of credit 7,432 8,221 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the agreement. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for lines of credit may expire without being drawn upon. Therefore, total commitment amounts do not necessarily represent future cash requirements. The amount of collateral obtained, if it is deemed necessary by the Company, is base d on management’s credit evaluation of the customer. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. The credit risk involved in issuing letters of credit is essenti ally the same as that involved in extending loan facilities to customers. The Company holds various assets as collateral, including accounts receivable, inventory, equipment, marketable securities, and property to support those commitments for which colla teral is deemed necessary. The Company has recorded a liability for the estimated fair value of these standby letters of credit in the amount of $84 thousand and $69 thousand at December 31, 2016 and 2015 , respectively. Other Commitments Minimum l ease payments under leases classified as operating leases due in each of the five years subsequent to December 31, 2016 , are as follows: 2017, $155 thousand; 2018, $51 thousand; 2019, $36 thousand; 2020, $3 thousand; 2021, none . Contingent Liabilities The Company and the Bank are involved in various legal proceedings, arising in connection with their business. In the opinion of management, based upon consultation with legal counsel, the ultimate resolution of these proceeding will not have a material a dverse effect upon the consolidated financial condition or results of operations of the Company and the Bank.

Fair Value Disclosures

Fair Value Disclosures	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Disclosures Text Block	NOTE 17 : FAIR VALUE Fair Value Hierarchy “Fair value” is defined by ASC 820, Fair Value Measurements and Disclosures , as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for an asset or liability at the measurement date. GAAP establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: Level 1—inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. Level 2—inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs that are observable fo r the asset or liability, either directly or indirectly. Level 3—inputs to the valuation methodology are unobservable and reflect the Company’s own assumptions about the inputs market participants would use in pricing the asset or liability. Level c hanges in fair value measurements Transfers between levels of the fair value hierarchy are generally recognized at the end of the reporting period. The Company monitors the valuation techniques utilized for each category of financial assets and liabilit ies to ascertain when transfers between levels have been affected. The nature of the Company’s financial assets and liabilities generally is such that transfers in and out of any level are expected to be infrequent. For the years ended December 31, 2016 and 2015 , there were no transfers between levels and no changes in valuation techniques for the Company’s financial assets and liabilities. Assets and liabilities measured at fair value on a recurring basis Securities available-for-sale Fair values of securiti es available for sale were primarily measured using Level 2 inputs. For these securities, the Company obtains pricing from third party pricing services. These third party pricing services consider observable data that may include broker/dealer quotes, ma rket spreads, cash flows, market consensus prepayment speeds, benchmark yields, reported trades for similar securities, credit information and the securities’ terms and conditions. On a quarterly basis, management reviews the pricing received from the thi rd party pricing services for reasonableness given current market conditions. As part of its review, management may obtain non-binding third party broker quotes to validate the fair value measurements. In addition, management will periodically submit pri cing provided by the third party pricing services to another independent valuation firm on a sample basis. This independent valuation firm will compare the price provided by the third party pricing service with its own price and will review the significan t assumptions and valuation methodologies used with management. Interest rate swap agreements The carrying amount of interest rate swap agreements was included in other assets and accrued expenses and other liabilities on the accompanying consolidated balance sheets. The fair value measurements for our interest rate swap agreements were based on information obtained from a third party bank. This information is periodically tested by the Company and validated against other third party valuations. If needed, other third party market participants may be utilized to corroborate the fair value measurements for our interest rate swap agreements. The Company classified these derivative assets and liabilities within Level 2 of the valuation hierarchy. These swaps qualify as derivatives, but are not designated as hedging instruments. The following table presents the balances of the assets and liabilities measured at fair value on a recurring basis as of December 31, 2016 and 2015 , respectively, by caption, on th e accompanying consolidated balance sheets by ASC 820 valuation hierarchy (as described above). Quoted Prices in Significant Active Markets Other Significant for Observable Unobservable Identical Assets Inputs Inputs (Dollars in thousands) Amount (Level 1) (Level 2) (Level 3) December 31, 2016: Securities available-for-sale: Agency obligations $ 45,471 — 45,471 — Agency RMBS 127,787 — 127,787 — State and political subdivisions 70,314 — 70,314 — Total securities available-for-sale 243,572 — 243,572 — Other assets (1) 241 — 241 — Total assets at fair value $ 243,813 — 243,813 — Other liabilities (1) 241 — 241 — Total liabilities at fair value $ 241 — 241 — December 31, 2015: Securities available-for-sale: Agency obligations $ 60,085 — 60,085 — Agency RMBS 110,954 — 110,954 — State and political subdivisions 70,648 — 70,648 — Total securities available-for-sale 241,687 — 241,687 — Other assets (1) 440 — 440 — Total assets at fair value $ 242,127 — 242,127 — Other liabilities (1) 440 — 440 — Total liabilities at fair value $ 440 — 440 — (1) Represents the fair value of interest rate swap agreements. Assets and liabilities measured at fair value on a nonrecurring basis Loans held for sale Loans held for sale are carried at the lower of cost or fair value. Fair values of loans held for sale are determined using quoted market secondary market prices for similar loans. Loans held for sale are classified within Level 2 of the fair value hierarchy. Impaired Loans Loans considered impaired under ASC 310-10-35, Receivables , are loans for which, based on current information and events, it is probable tha t the Company will be unable to collect all principal and interest payments due in accordance with the contractual terms of the loan agreement. Impaired loans can be measured based on the present value of expected payments using the loan’s original effect ive rate as the discount rate, the loan’s observable market price, or the fair value of the collateral less selling costs if the loan is collateral dependent. The fair value of impaired loans were primarily measured based on the value of the collateral securing these loans. Impaired loans are classified within Level 3 of the fair value hierarchy. Collateral may be real estate and/or business assets including equipment, inventory, and/or accounts receivable. The Company determines the value of the coll ateral based on independent appraisals performed by qualified licensed appraisers. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Appraised values are discounted for costs to sell and may be discounted further based on management’s historical knowledge, changes in market conditions from the date of the most recent appraisal, and/or management’s expertise and knowledge of the customer and the customer’s business. Such discounts by management are subjective and are typically significant unobservable inputs for determining fair value. Impaired loans are reviewed and evaluated on at least a quarterly basis for additional impairment and adjusted accordingly, based on the same factors discussed above. Other real estate owned Other real estate owned, consisting of properties obtained through foreclosure or in satisfaction of loans, are initially recorded at the lower of the loan’s carrying amount or the fair value less costs to sell upon transfer of the loans to other real estate. Subsequently, other real estate is carried at the lower of carrying value or fair value less costs to sell. Fair values are generally based on third party appraisals of the property and are classified within Level 3 of the fair value hierarchy. The appraisals are sometimes further discounted based on management’s historical knowledge, and/or changes in market conditions from the date of the most recent appraisal, and/or management’s expe rtise and knowledge of the customer and the customer’s business. Such discounts are typically significant unobservable inputs for determining fair value. In cases where the carrying amount exceeds the fair value, less costs to sell, a loss is recognized in noninterest expense. Mortgage servicing rights, net Mortgage servicing rights, net, included in other assets on the accompanying consolidated balance sheets, are carried at the lower of cost or estimated fair value. MSRs do not trade in an active m arket with readily observable prices. To determine the fair value of MSRs, the Company engages an independent third party. The independent third party’s valuation model calculates the present value of estimated future net servicing income using assumptio ns that market participants would use in estimating future net servicing income, including estimates of prepayment speeds, discount rate, default rates, cost to service, escrow account earnings, contractual servicing fee income, ancillary income, and late fees. Periodically, the Company will review broker surveys and other market research to validate significant assumptions used in the model. The significant unobservable inputs include prepayment speeds or the constant prepayment rate (“CPR”) and the weig hted average discount rate. Because the valuation of MSRs requires the use of significant unobservable inputs, all of the Company’s MSRs are classified within Level 3 of the valuation hierarchy. The following table presents the balances of the assets and liabilities measured at fair value on a nonrecurring basis as of December 31, 2016 and 2015 , respectively, by caption, on the accompanying consolidated balance sheets and by ASC 820 valuation hierarchy (as described above): Quoted Prices in Active Markets Other Significant for Observable Unobservable Identical Assets Inputs Inputs (Dollars in thousands) Amount (Level 1) (Level 2) (Level 3) December 31, 2016: Loans held for sale $ 1,497 — 1,497 — Loans, net (1) 2,099 — — 2,099 Other real estate owned 152 — — 152 Other assets (2) 1,952 — — 1,952 Total assets at fair value $ 5,700 — 1,497 4,203 December 31, 2015: Loans held for sale $ 1,540 — 1,540 — Loans, net (1) 3,286 — — 3,286 Other real estate owned 252 — — 252 Other assets (2) 2,316 — — 2,316 Total assets at fair value $ 7,394 — 1,540 5,854 (1) Loans considered impaired under ASC 310-10-35 Receivables. This amount reflects the recorded investment in impaired loans, net of any related allowance for loan losses. (2) Represents MSRs, net, carried at lower of cost or estimated fair value. At December 31, 2016 and 2015 and for the years then ended, the Company had no Level 3 assets measured at fair value on a recurring basis. For Level 3 assets measured at fair value on a non-recurring basis as of December 31, 2016 , the significant unobservable inputs used in the fair value measurements are presented below. Weighted Carrying Average (Dollars in thousands) Amount Valuation Technique Significant Unobservable Input of Input Nonrecurring: Impaired loans $ 2,099 Appraisal Appraisal discounts (%) 45.2 % Other real estate owned 152 Appraisal Appraisal discounts (%) 10.0 % Mortgage servicing rights, net 1,952 Discounted cash flow Prepayment speed or CPR (%) 10.9 % Discount rate (%) 10.0 % Fair Value of Financial Instruments ASC 825, Financial Instruments , requires disclosure of fair value information about financial instruments , whether or not recognized on the face of the balance sheet, for which it is practicable to estimate that value. The assumptions used in the estimation of the fair value of the Company’s financial instruments are explained below. Where quoted market prices are not available, fair values are based on estimates using discounted cash flow analyses. Discounted cash flows can be significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. The following fair value estima tes cannot be substantiated by comparison to independent markets and should not be considered representative of the liquidation value of the Company’s financial instruments, but rather are a good-faith estimate of the fair value of financial instruments he ld by the Company. ASC 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments: Loans, net Fair values for loans were calculated using discounted cash flows. The discount rates reflected current rates at which similar loans would be made for the same remaining maturities. This method of estimating fair value does not incorporate th e exit-price concept of fair value prescribed by ASC 820 and generally produces a higher value than an exit-price approach. Expected future cash flows were projected based on contractual cash flows, adjusted for estimated prepayments. Loans held for sale Fair values of loans held for sale are determined using quoted market secondary market prices for similar loans . Time Deposits Fair values for time deposits were estimated using discounted cash flows. The discount rates were based on rates currently offer ed for deposits with similar remaining maturities. Long-term debt The fair value of the Company’s fixed rate long-term debt is estimated using discounted cash flows based on estimated current market rates for similar types of borrowing arrangements. The carrying amount of the Company’s variable rate long-term debt approximates its fair value. The carrying value, related estimated fair value, and placement in the fair value hierarchy of the Company’s financial instruments at December 31, 2016 and 2015 are pre sented below. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which fair value approximates carrying value included cash and cash equivalents. Financial liabilities for which fair val ue approximates carrying value included noninterest-bearing demand, interest-bearing demand, and savings deposits due to these products having no stated maturity. In addition, financial liabilities for which fair value approximates carrying value included overnight borrowings such as federal funds purchased and securities sold under agreements to repurchase . Fair Value Hierarchy Carrying Estimated Level 1 Level 2 Level 3 (Dollars in thousands) amount fair value inputs inputs Inputs December 31, 2016: Financial Assets: Loans, net (1) $ 426,303 $ 428,446 $ — $ — $ 428,446 Loans held for sale 1,497 1,507 — 1,507 — Financial Liabilities: Time Deposits $ 208,137 $ 207,791 $ — $ 207,791 $ — Long-term debt 3,217 3,217 — 3,217 — December 31, 2015: Financial Assets: Loans, net (1) $ 422,121 $ 427,340 $ — $ — $ 427,340 Loans held for sale 1,540 1,574 — 1,574 — Financial Liabilities: Time Deposits $ 219,598 $ 220,093 $ — $ 220,093 $ — Long-term debt 7,217 7,217 — 7,217 — (1) Represents loans, net of unearned income and the allowance for loan losses.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	NOTE 18 : RELATED PARTY TRANSACTIONS A former director who retired from the Company’s board of directors in October 2015, was an officer in a construction company that the Company contracted with in 2015 for the build out of leasehold improvements in connection with a relocation of a bank branch and for construction of a new branch facility located in Auburn, Alabama. Total payments made to the construction company under the terms of these contracts were $1.2 million for the year ended December 31, 2015. There were no payments made related to these contracts for the year ended December 31, 2016. The Bank has made, and expects in the future to continue to make in the ordinary course of business, loans to directors and executive officers of the Company, the Bank, and their affiliates. In management’s opinion, these loans were made in the ordinary course of business at normal credit terms, including interest rate and collateral requirements, and do not represent more than normal credit risk. An analysis of such outstanding loans is presented below. (Dollars in thousands) Amount Loans outstanding at December 31, 2015 $ 3,715 New loans/advances 1,071 Repayments (866) Changes in directors and executive officers 24 Loans outstanding at December 31, 2016 $ 3,944 During 2016 and 2015 , certain executive officers and directors of the Company and the Bank, including companies with which they are affiliated, were deposit customers of the bank. Total deposits for these persons at December 31, 2016 and 2015 amounted to $ 17.8 million and $18.1 million, respectively.

Regulatory Restrictions and Cap

Regulatory Restrictions and Capital Ratios	12 Months Ended
	Dec. 31, 2016
Regulatory Capital Requirements [Abstract]
Regulatory Capital Requirements under Banking Regulations [Text Block]	NOTE 19 : REGULATORY RESTRICTIONS AND CAPITAL RATIOS The Company and the Bank are subject to various regulatory capital requirements and policies administered by federal and State of Alabama banking regulators. Failure to meet minimum capital requirements can initiate certain mandatory – and possibly additional discretionary – actions by regulators that, if undertaken, could have a material effect on the consolidated financial statements. Under capital adequacy guidelines and the regulatory fr amework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and Bank’s assets, liabilities, and certain off–balance sheet items as calculated under regulatory acco unting practices. The Company’s and Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors, including anticipated capital needs. Supervisory assessments o f capital adequacy may differ significantly from conclusions based solely upon risk-based capital ratios. Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (s et forth in the table below) common equity Tier 1 ratio, Tier 1 leverage ratio, Tier 1 risk-based ratio and total risk-based ratio. Management believes, as of December 31, 2016 , that the Company and the Bank meet all capital adequacy requirements to w hich they are subject. As of December 31, 2016 , the Bank is “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well capitalized,” the Bank must maintain minimum common equity Tier 1, total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the table. Management has not received any notification from the Company’s or the Bank's regulators that changes the Bank’s regulatory capital status. The actual capital amounts and ratios and the aforementioned minimums as of December 31, 2016 and 2015 are presented below. Minimum for capital Minimum to be Actual adequacy purposes well capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio At December 31, 2016: Tier 1 Leverage Capital Auburn National Bancorporation $ 85,480 10.27 % $ 33,293 4.00 % N/A N/A AuburnBank 84,287 10.14 33,259 4.00 $ 41,574 5.00 % Common Equity Tier 1 Capital Auburn National Bancorporation $ 82,642 16.44 % $ 22,621 4.50 % N/A N/A AuburnBank 84,287 16.74 22,663 4.50 $ 32,736 6.50 Tier 1 Risk-Based Capital Auburn National Bancorporation $ 85,480 17.00 % $ 30,162 6.00 % N/A N/A AuburnBank 84,287 16.74 30,218 6.00 $ 40,290 8.00 % Total Risk-Based Capital Auburn National Bancorporation $ 90,254 17.95 % $ 40,216 8.00 % N/A N/A AuburnBank 89,061 17.68 40,290 8.00 $ 50,363 10.00 % At December 31, 2015: Tier 1 Leverage Capital Auburn National Bancorporation $ 84,268 10.35 % $ 32,553 4.00 % N/A N/A AuburnBank 82,848 10.19 32,519 4.00 $ 40,649 5.00 % Common Equity Tier 1 Capital Auburn National Bancorporation $ 77,714 15.28 % $ 22,886 4.50 % N/A N/A AuburnBank 82,848 16.26 22,933 4.50 $ 33,125 6.50 Tier 1 Risk-Based Capital Auburn National Bancorporation $ 84,268 16.57 % $ 30,515 6.00 % N/A N/A AuburnBank 82,848 16.26 30,577 6.00 $ 40,769 8.00 % Total Risk-Based Capital Auburn National Bancorporation $ 88,682 17.44 % $ 40,687 8.00 % N/A N/A AuburnBank 87,262 17.12 40,769 8.00 $ 50,962 10.00 % Dividends paid by the Bank are a principal source of funds available to the Company for payment of dividends to its stockholders and for other needs. Applicable federal and state statutes and regulations impose restrictions on the amounts of dividends that may be declared by the subsidiary bank. State law and Federal Reserve policy restrict the Bank from declaring dividends in excess of the sum of the current year’s earnings plus the retained net earnings from the preceding two years without prior appro val. In addition to the formal statutes and regulations, regulatory authorities also consider the adequacy of the Bank’s total capital in relation to its assets, deposits, and other such items. Capital adequacy considerations could further limit the availa bility of dividends from the Bank. At December 31, 2016 , the Bank could have declared additional dividends of approximately $10.1 million without prior approval of regulatory authorities. As a result of this limitation, approximately $73.9 million of th e Company’s investment in the Bank was restricted from transfer in the form of dividends.

Auburn National Bancorporation

Auburn National Bancorporation - Parent Company Financials	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	NOTE 20 : AUBURN NATIONAL BANCORPORATION (PARENT COMPANY) The Parent Company’s condensed balance sheets and related condensed statements of earnings and cash flows are as follows: CONDENSED BALANCE SHEETS December 31 (Dollars in thousands) 2016 2015 Assets: Cash and due from banks $ 2,190 2,187 Investment in bank subsidiary 83,984 85,529 Other assets 881 845 Total assets $ 87,055 88,561 Liabilities: Accrued expenses and other liabilities $ 1,661 1,395 Long-term debt 3,217 7,217 Total liabilities 4,878 8,612 Stockholders' equity 82,177 79,949 Total liabilities and stockholders' equity $ 87,055 88,561 CONDENSED STATEMENTS OF EARNINGS Year ended December 31 (Dollars in thousands) 2016 2015 Income: Dividends from bank subsidiary $ 6,709 3,450 Noninterest income 129 135 Total income 6,838 3,585 Expense: Interest expense 228 236 Gain on early extinguishment of debt (790) — Noninterest expense 193 195 Total expense (369) 431 Earnings before income tax benefit and equity in undistributed earnings of bank subsidiary 7,207 3,154 Income tax expense (benefit) 157 (80) Earnings before equity in undistributed earnings of bank subsidiary 7,050 3,234 Equity in undistributed earnings of bank subsidiary 1,100 4,624 Net earnings $ 8,150 7,858 CONDENSED STATEMENTS OF CASH FLOWS Year ended December 31 (Dollars in thousands) 2016 2015 Cash flows from operating activities: Net earnings $ 8,150 7,858 Adjustments to reconcile net earnings to net cash provided by operating activities: Gain on early extinguishment of debt (790) — Net (increase) decrease in other assets (36) 1 Net increase (decrease) in other liabilities 268 (153) Equity in undistributed earnings of bank subsidiary (1,100) (4,624) Net cash provided by operating activities 6,492 3,082 Cash flows from financing activities: Repayments or retirement of long-term debt (3,210) — Dividends paid (3,279) (3,206) Net cash used in financing activities (6,489) (3,206) Net change in cash and cash equivalents 3 (124) Cash and cash equivalents at beginning of period 2,187 2,311 Cash and cash equivalents at end of period $ 2,190 2,187

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Summary of Signficant Accounting Policies
Nature of Business Policy	NOTE 1 : SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Business Auburn National Bancorporation, Inc. (the “Company”) is a bank holding company whose primary business is conducted by its wholly-owned subsidiary, AuburnBank (the “Bank”). AuburnBank is a commercial bank located in Auburn, Alabama. The Bank provides a full range of banking services in its primary market area, Lee County, which includ es the Auburn-Opelika Metropolitan Statistical Area.
Basis of Presentation Policy	Basis of Presentation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiar ies. Auburn National Bancorporation Capital Trust I is an affiliate of the Company and was included in these consolidated financial statements pursuant to the equity method of accounting. Significant intercompany transactions and accounts are eliminated in consolidation.
Use of Estimates Policy	Use of Estimates The preparation of financial statemen ts 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 the disclosure of contingent assets and liabilities as of the balance s heet date and the reported amounts of income and expense 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 the determination of the allowance for loan losses , fair value measurements , valuation of other real estate owned, and valuation of deferred tax assets.
Reclassifications Policy	Reclassifications Certain amounts reported in the prior period have been reclassified to conform to the current-period p resentation. These reclassifications had no impact on the Company’s previously reported net earnings or total stockholders’ equity
Accounting Standards Adopted in 2014	Acco unting Standards Adopted in 2016 In the first quarter of 2016 , the Company adopted new guidance related to the fol lowing Accounting Standards Updates (“Updates” or “ASUs”): ASU 2015-02, Amendments to the Consolidation Analysis ; ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs ; and ASU 2015-05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. Information about these pronouncements is described in more detail below. ASU 2015-02, Amendments to the Consolidation Analysis , affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. Specifically, the amendments: (1) Modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (“VIEs”) or voting interest entities; (2) Eliminate the presumption that a general partner should consolidate a limited partnership; (3) Affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) Provide a scope exce ption from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registere d money market funds. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs, requires that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the debt liability, rather than as an asset. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. ASU 2015-05, Customer’s Accountin g for Fees Paid in a Cloud Computing Arrangement , provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the soft ware license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The new guidanc e does not change the accounting for a customer’s accounting for service contracts. Adoption of this ASU did not have a material impact on the Company’s consolidated financial statements.
Cash Equivalents Policy	Cash Equivalents Cash equivalents include c ash on hand, cash item s in process of collection, amounts due from banks, including interest bearing deposits with other banks, and federal funds sold.
Securities Policy	Securities Securities are classified based on management’s intention at the date of purchase. At December 31, 2016 , all of the Company’s securities were classified as available-for-sale. Securities available-for-sale are used as part of the Company’s interest rate risk management strategy, and they may be sold in response to changes in interest rates, changes in prepayment risks or other factors. All securities classified as available-for-sale are recorded at fair value with any unrealized gains and losses reported in accu mulated other comprehensive income , net of the deferred income tax effects. Interest and dividends on s ecurities, including the amortization of premiums and accretion of discounts are recognized in interest income over the anticipated life of the security using the effective interest method, taking into consideration prepayment assumptions. Realized gains a nd losses from the sale of securities are determined using the specific identification method. On a quarterly basis, management makes an assessment to determine whether there have been events or economic circumstances to indicate that a security on which there is an unrealized loss is other-than-temporarily impaired. For equity securities with an unrealized loss, the Company considers many factors including the severity and duration of the impairment; the intent and ability of the Company to hold the secu rity for a period of time sufficient for a recovery in value; and recent events specific to the issuer or industry. Equity securities on which there is an unrealized loss that is deemed to be other-than-temporary are written down to fair value with the wri te-down recorded as a realized loss in securities gains (losses) , net . For debt securities with an unrealized loss, an other-than-temporary impairment write-down is triggered when (1) the Company has the intent to sell a debt security, (2) it is more li kely than not that the Company will be required to sell the debt security before recovery of its amortized cost basis, or (3) the Company does not expect to recover the entire amortized cost basis of the debt security. If the Company has the intent to sel l a debt security or if it is more likely than not that it will be required to sell the debt security before recovery, the other-than-temporary write-down is equal to the entire difference between the debt security’s amortized cost and its fair value. If the Company does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the other-than-temporary impairment write-down is separated into the amount that is credit related (credit los s component) and the amount due to all other factors. The credit loss component is recognized in earnings, as a realized loss in securities gains (losses), and is the difference between the security’s amortized cost basis and the present value of its expe cted future cash flows. The remaining difference between the security’s fair value and the present value of future expected cash flows is due to factors that are not credit related and is recognized in other comprehensive income, net of applicable taxes.
Loans Held for Sale Policy	Loans held for sale Loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate . Loan sales are recognized when the transaction closes, the proceeds are collected, and ownersh ip is transferred. Continuing involvement, through the sales agreement, consists of the right to service the loan for a fee for the life of the loan, if applicable. Gains on the sale of loans held for sale are recorded net of related costs, such as commi ssions, and reflected as a component of mortgage lending income in the consolidated statements of earnings. In the course of conducting the Bank’s mortgage lending activities of originating mortgage loans and selling those loans in the secondary marke t, the Bank makes various representations and warranties to the purchaser of the mortgage loans. Every loan closed by the Bank’s mortgage center is run through a government agency automated underwriting system. Any exceptions noted during this process ar e remedied prior to sale. These representations and warranties also apply to underwriting the real estate appraisal opinion of value for the collateral securing these loans. Failure by the Company to comply with the underwriting and/or appraisal standard s could result in the Company being required to repurchase the mortgage loan or to reimburse the investor for losses incurred (make whole requests) if such failure cannot be cured by the Company within the specified period following discovery.
Loans Policy	Loans L oans are reported at their outstanding principal balances, net of any unearned income , charge-offs, and any deferred fees or costs on originated loans. Interest income is accrued based on the principal balance outstanding.
Loans, Origination Fees Policy	Loan origination fees, net of c ertain loan origination costs, are deferred and recognized in interest income over the contractual life of the loan using the effective interest method. Loan commitment fees are generally deferred and amortized on a straight-line basis over the commitment period , which results in a recorded amount that approximates fair value .
Loans, Nonacrrual Policy	The accrual of interest on loans is discontinued when there is a significant deterioration in the financial condition of the borrower and full repayment of principal and interest is not expected or the principal or interest is more than 90 days past due, unless the loan is both well-collateralized and in the process of collection. Generally, all interest accrued but not collected for loans that are placed on nonaccrual status is reve rsed against current interest income. Interest collections on non accrual loans are generally applied as principal reductions. The Company determines past due or delinquency status of a loan based on contractual payment terms.
Loans, Impaired Policy	A loan is considered impaire d when it is probable the Company will be unable to collect all principal and interest payments due according to the contractual terms of the loan agreement. Individually identified impaired loans are measured based on the present value of expected payment s using the loan’s original effective rate as the discount rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent. If the recorded investment in the impaired loan exceeds the measure of fair value, a valuation allowance may be established as part of the allowance for loan losses. Changes to the valuation allowance are recorded as a component of the provision for loan losses.
Loans, Troubled Debt Restructuring Policy	Impaired loans also include troubled debt restructurings (“TDRs”). In the normal course of business, management may grant concessions to borrowers who are experiencing financial difficulty. The concessions granted most frequently for TDRs involve reductions or delays in required payments of principal and interest for a specified time, the rescheduling of payments in accordance with a bankruptcy plan or the charge-off of a portion of the loan. In most cases, the conditions of the credit also warrant nonaccrual st atus, even after the restructuring occurs. As part of the credit approval process, the restructured loans are evaluated for adequate collateral protection in determining the appropriate accrual s tatus at the time of restructuring . TDR loans may be returned to accrual status if there has been at least a six-month sustained period of repayment performance by the borrower.
Allowance for Loan Losses Policy	Allowance for Loan Losses The allowance for loan los ses is maintained at a level that management believes is adequate to absorb probable losses inherent in the loan portfolio. Loan losses are charged against the allowance when they are known. Subsequent recoveries are credited to the allowance. Management’s determination of the adequacy of the allowance is based on an evaluation of the portfolio, current economic conditions, growth, composition of the loan portfolio, homogeneous pools of loans, risk ratings of specific loans, historical loan loss factors, id entified impaired loans and other factors related to the portfolio. This evaluation is performed quarterly and is inherently subjective, as it requires various material estimates that are susceptible to significant change, including the amounts and timing of future cash flows expected to be received on any impaired loans. In addition, regulatory agencies, as an integral part of their examination process, will periodically review the Company’s allowance for loan losses, and may require the Company to record additions to the allowance based on their judgment about information available to them at the time of their examinations.
Premises and Equipment Policy	Premises and Equipment Land is carried at cost. Buildings and equipment are carried at cost, less accumulated depreciation compute d on a straight-line method over the useful lives of the assets or the expected terms of the leases, if shorter. Expected terms include lease option periods to the extent that the exercise of such options is reasonably assured.
Other Real Estate Owned Policy	Other Real Estate Owned O ther real estate owned (“OREO”) includes properties acquired through, or in lieu of, loan foreclosure that are held for sale and are initially recorded at the lower of the loan’s carrying amount or fair value less cost to sell at the date of foreclosure, e stablishing a new cost basis. Subsequent to foreclosure, valuations are periodically performed by management and the assets are carried at the lower of carrying value amount or fair value less cost to sell. Gains or losses realized upon sale of OREO and a dditional losses related to subsequent valuation adjustments are determined on a specific property basis and are included as a component of noninterest expense along with holding costs.
Nonmarketable Equity Investments Policy	Nonmarketable equity investments Nonmarketable equity investments include equity securities that are not publicly traded and securities acquired for various purposes . The Bank is required to maintain certain minimum levels of equity investments with certain regulatory and other entities in which the Bank has an ongoing business relationship based on the Bank’s common stock and surplus (with regard to the relationship with the Federal Reserve Bank) or outstanding borrowings (with regard to the relationship with the Federal Home Loan Bank of Atlanta). These secu rities are accounted for under the cost method and are included in other assets. For cost-method investments , on a quarterly basis , the Company evaluates whether an event or change in circumstances has occurred during the reporting period that may have a significant adverse effect on the fair value of the investment. If the Company determines that a decline in value is other-than-temporary, the Company will recognize the estimated loss in securities gains (losses), net.
Transfers and Servicing of Financial Assets, Policy	Transfers of Financial Assets Tra nsfers of an entire financial asset (i.e. loan sales), a group of entire financial assets, or a participating interest in an entire financial asset (i.e. loan participations sold) are accounted for as sales when control over the assets have been surrendere d. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
Mortgage Servicing Rights Policy	Mortgage Servicing Rights The Company recognizes as assets the rights to service mortgage loans f or others, known as MSRs. The Company determines the fair value of MSRs at the date the loan is transferred. An estimate of the Company’s MSRs is determined using assumptions that market participants would use in estimating future net servicing income, in cluding estimates of pre p ayment speeds, discount rate, default rates, cost to service, escrow account earnings, contractual servicing fee income, ancillary income, and late fees. Subsequent to the date of transfer, the Company has elected to measure its MSRs under the amortization method. Under the amortization method, MSRs are amortized in proportion to, and over the period of, estimated net servicing income. The amortization of MSRs is analyzed monthly and is adjusted to reflect changes in prepayment speeds, as well as other factors. MSRs are evaluated for impairment based on the fair value of those assets. Impairment is determined by stratifying MSRs into groupings based on p redominant risk characteristics, such as interest rate and loan type. If, by individual stratum, the carrying amount of the MSRs exceeds fair value, a valuation allowance is established through a charge to earnings. The valuation allowance is adjusted as the fair value changes. MSRs are included in the other assets category in the accompanying consolidated balance sheet s .
Derivative Instruments Policy	Derivative Instruments In accordance with Accounting Standards Codification (“ASC”) Topic 815, Derivatives and Hedging , all derivat ive instruments are recorded on the consolidated balance sheet at their res pective fair values. The accounting for changes in fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, if so, on the reason for holding it. If the derivative instrument is not designated as part of a hedg ing relationship , the gain or loss on the derivative instrument is recognized in earnings in the period of change. None of the derivatives utilized by the Company have been designated as a hedge.
Securities Sold Under Agreements to Repurchase Policy	Securities sold under agreements to repurchase Securities sold under agreements to repurchase generally mature less than one year from the transaction date. Securities sold under agre ements to repurchase are reflected as a secured borrowing in the accompanying consolidated balance sheets at the amount of cash received in connection with each transaction.
Income Taxes Policy	Income Taxes Deferred tax assets and liabilities are the expected future tax a mounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. The net deferred tax asset is reflected as a component of other assets in the accompanying consolidated balance sheets. Income tax expense or benefit for the year is allocated among continuing operations and other comprehensive income (loss), as applicable. The amount all ocated to continuing operations is the income tax effect of the pretax income or loss from continuing operations that occurred during the year, plus or minus income tax effects of ( 1 ) changes in certain circumstances that cause a change in judgment about t he realization of deferred tax assets in future years, ( 2 ) changes in income tax laws or rates, and ( 3 ) changes in income tax status, subject to certain exceptions. The amount allocated to other comprehensive income (loss) is related solely to changes in the valuation allowance on items that are normally accounted for in other comprehensive income (loss) such as unrealized gains or losses on available-for-sale securities. In accordance with ASC 740, Income Taxes , a tax position is recognized as a benefit o nly if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. It is the Company’s policy to recognize interest and penalties related to income tax matters in income tax expense. The Company and its wholly-owned subsidiaries file a consolidated income tax return.
Income Taxes, Uncertainties Policy	In accordance with ASC 740, Income Taxes , a tax position is recognized as a benefit o nly if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. It is the Company’s policy to recognize interest and penalties related to income tax matters in income tax expense. The Company and its wholly-owned subsidiaries file a consolidated income tax return.
Fair Value Measurements Policy	Fair Value Measurements ASC 820 , Fair Value Measurements, which defines fair value, establishes a framework for measuring fair value in U.S. generally accepted accounting principles and expands disclosures about fair value measurements. ASC 820 applies only to fair-value measurements that are already required or permitted by other accounting standards. The definition of fair value focuses on the exit price, i.e., the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurem ent date, not the entry price, i.e., the price that would be paid to acquire the asset or received to assume the liability at the measurement date. The statement emphasizes that fair value is a market-based measurement; not an entity-specific measurement. Therefore, the fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. For more information related to fair value measurements, please refer to Note 17 , Fair Value.
Subsequent Events Policy	Sub sequent Events The Company has evaluated the effects of events or transactions through the date of this filing that have occurred subsequent to December 31, 2016 . The Company does not believe there are any material subsequent events that would require further recognition or disclosure .

Basic and Diluted Earnings Pe30

Basic and Diluted Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Basic and Diluted Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year ended December 31 (Dollars in thousands, except share and per share data) 2016 2015 Basic and diluted: Net earnings $ 8,150 $ 7,858 Weighted average common shares outstanding 3,643,504 3,643,428 Net earnings per share $ 2.24 $ 2.16

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2016
Variable interest entities [Abstract]
Variable Interest Entity [Table Text Block]	Maximum Loss Liability (Dollars in thousands) Exposure Recognized Classification Type: Trust preferred issuances N/A $ 3,217 Long-term debt

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2016
Investments debt and equity securities [Abstract]
Available-for-sale Securities [Table Text Block]	1 year 1 to 5 5 to 10 After 10 Fair Gross Unrealized Amortized (Dollars in thousands) or less years years years Value Gains Losses Cost December 31, 2016 Agency obligations (a) $ 3,047 22,531 19,893 — 45,471 331 973 $ 46,113 Agency RMBS (a) — 972 16,171 110,644 127,787 551 1,805 129,041 State and political subdivisions — 2,480 10,210 57,624 70,314 1,509 734 69,539 Total available-for-sale $ 3,047 25,983 46,274 168,268 243,572 2,391 3,512 $ 244,693 December 31, 2015 Agency obligations (a) $ 5,000 25,852 19,463 9,770 60,085 384 518 $ 60,219 Agency RMBS (a) — 1,623 13,511 95,820 110,954 968 780 $ 110,766 State and political subdivisions — 497 12,094 58,057 70,648 3,022 7 $ 67,633 Total available-for-sale $ 5,000 27,972 45,068 163,647 241,687 4,374 1,305 $ 238,618 (a) Includes securities issued by U.S. government agencies or government sponsored entities.
Available-for-sale Securities, Continuous Unrealized Loss Position [Table Text Block]	Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses December 31, 2016: Agency obligations $ 20,352 973 — — 20,352 $ 973 Agency RMBS 89,062 1,805 — — 89,062 1,805 State and political subdivisions 20,444 734 — — 20,444 734 Total $ 129,858 3,512 — — 129,858 $ 3,512 December 31, 2015: Agency obligations $ 8,157 2 24,444 516 32,601 $ 518 Agency RMBS 42,345 367 18,184 413 60,529 780 State and political subdivisions 267 1 969 6 1,236 7 Total $ 50,769 370 43,597 935 94,366 $ 1,305
Schedule of Realized Gain (Loss) [Table Text Block]	Realized Gains and Losses The following table presents the gross realized gains and losses on sales related to securities. Year ended December 31 (Dollars in thousands) 2016 2015 Gross realized gains $ 166 16 Gross realized losses (387) — Realized (losses) gains, net $ (221) 16

Loan and Allowance for Loan L33

Loan and Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2016
Loans And Leases Receivable Disclosure [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	December 31 (In thousands) 2016 2015 Commercial and industrial $ 49,850 $ 52,479 Construction and land development 41,650 43,694 Commercial real estate: Owner occupied 49,745 46,602 Multifamily 46,998 45,264 Other 123,696 111,987 Total commercial real estate 220,439 203,853 Residential real estate: Consumer mortgage 65,564 70,009 Investment property 45,291 46,664 Total residential real estate 110,855 116,673 Consumer installment 8,712 10,220 Total loans 431,506 426,919 Less: unearned income (560) (509) Loans, net of unearned income $ 430,946 $ 426,410
Past Due Financing Receivables [Table Text Block]	Accruing Accruing Total 30-89 Days Greater than Accruing Non- Total (In thousands) Current Past Due 90 days Loans Accrual Loans December 31, 2016: Commercial and industrial $ 49,747 66 — 49,813 37 $ 49,850 Construction and land development 41,223 395 — 41,618 32 41,650 Commercial real estate: Owner occupied 49,564 43 — 49,607 138 49,745 Multifamily 46,998 — — 46,998 — 46,998 Other 121,608 199 — 121,807 1,889 123,696 Total commercial real estate 218,170 242 — 218,412 2,027 220,439 Residential real estate: Consumer mortgage 64,059 1,282 — 65,341 223 65,564 Investment property 45,243 19 — 45,262 29 45,291 Total residential real estate 109,302 1,301 — 110,603 252 110,855 Consumer installment 8,652 38 — 8,690 22 8,712 Total $ 427,094 2,042 — 429,136 2,370 $ 431,506 December 31, 2015: Commercial and industrial $ 52,387 49 — 52,436 43 $ 52,479 Construction and land development 43,111 — — 43,111 583 43,694 Commercial real estate: Owner occupied 46,372 — — 46,372 230 46,602 Multifamily 45,264 — — 45,264 — 45,264 Other 110,467 — — 110,467 1,520 111,987 Total commercial real estate 202,103 — — 202,103 1,750 203,853 Residential real estate: Consumer mortgage 68,579 1,105 — 69,684 325 70,009 Investment property 46,435 229 — 46,664 — 46,664 Total residential real estate 115,014 1,334 — 116,348 325 116,673 Consumer installment 10,179 28 — 10,207 13 10,220 Total $ 422,794 1,411 — 424,205 2,714 $ 426,919
Allowance for Credit Losses on Financing Receivables [Table Text Block]	Year ended December 31 (In thousands) 2016 2015 Beginning balance $ 4,289 $ 4,836 Charged-off loans (540) (1,114) Recovery of previously charged-off loans 1,379 367 Net charge-offs 839 (747) Provision for loan losses (485) 200 Ending balance $ 4,643 $ 4,289 (in thousands) Commercial and industrial Construction and land Development Commercial Real Estate Residential Real Estate Consumer Installment Total Balance, December 31, 2014 $ 639 974 1,928 1,119 176 $ 4,836 Charge-offs (100) — (866) (89) (59) (1,114) Recoveries 22 17 — 313 15 367 Net (charge-offs) recoveries (78) 17 (866) 224 (44) (747) Provision (38) (322) 817 (284) 27 200 Balance, December 31, 2015 $ 523 669 1,879 1,059 159 $ 4,289 Charge-offs (97) — (194) (182) (67) (540) Recoveries 29 1,212 — 127 11 1,379 Net (charge-offs) recoveries (68) 1,212 (194) (55) (56) 839 Provision 85 (1,069) 386 103 10 (485) Balance, December 31, 2016 $ 540 812 2,071 1,107 113 $ 4,643
Financing Receivable Allowance for Credit Loss Additional Information [Table Text Block]	Collectively evaluated (1) Individually evaluated (2) Total Allowance Recorded Allowance Recorded Allowance Recorded for loan investment for loan investment for loan investment (In thousands) losses in loans losses in loans losses in loans December 31, 2016: Commercial and industrial $ 540 49,835 — 15 540 49,850 Construction and land development 812 41,618 — 32 812 41,650 Commercial real estate 2,040 218,356 31 2,083 2,071 220,439 Residential real estate 1,107 110,855 — — 1,107 110,855 Consumer installment 113 8,712 — — 113 8,712 Total $ 4,612 429,376 31 2,130 4,643 431,506 December 31, 2015: Commercial and industrial $ 523 52,431 — 48 523 52,479 Construction and land development 669 43,111 — 583 669 43,694 Commercial real estate 1,758 201,077 121 2,776 1,879 203,853 Residential real estate 1,059 116,673 — — 1,059 116,673 Consumer installment 159 10,220 — — 159 10,220 Total $ 4,168 423,512 121 3,407 4,289 426,919 (1) Represents loans collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies (formerly FAS 5), and pursuant to amendments by ASU 2010-20 regarding allowance for unimpaired loans. (2) Represents loans individually evaluated for impairment in accordance with ASC 310-30, Receivables (formerly FAS 114), and pursuant to amendments by ASU 2010-20 regarding allowance for impaired loans.
Financing Receivable Credit Quality Indicators [Table Text Block]	(In thousands) Pass Special Mention Substandard Accruing Nonaccrual Total loans December 31, 2016 Commercial and industrial $ 49,558 22 233 37 $ 49,850 Construction and land development 41,165 113 340 32 41,650 Commercial real estate: Owner occupied 48,788 414 405 138 49,745 Multifamily 46,998 — — — 46,998 Other 121,326 32 449 1,889 123,696 Total commercial real estate 217,112 446 854 2,027 220,439 Residential real estate: Consumer mortgage 59,450 2,613 3,278 223 65,564 Investment property 44,109 105 1,048 29 45,291 Total residential real estate 103,559 2,718 4,326 252 110,855 Consumer installment 8,580 20 90 22 8,712 Total $ 419,974 3,319 5,843 2,370 $ 431,506 December 31, 2015 Commercial and industrial $ 48,038 4,075 323 43 $ 52,479 Construction and land development 42,458 60 593 583 43,694 Commercial real estate: Owner occupied 45,772 381 219 230 46,602 Multifamily 45,264 — — — 45,264 Other 110,159 36 272 1,520 111,987 Total commercial real estate 201,195 417 491 1,750 203,853 Residential real estate: Consumer mortgage 64,502 1,964 3,218 325 70,009 Investment property 45,399 112 1,153 — 46,664 Total residential real estate 109,901 2,076 4,371 325 116,673 Consumer installment 10,038 55 114 13 10,220 Total $ 411,630 6,683 5,892 2,714 $ 426,919
Impaired Financing Receivables [Table Text Block]	December 31, 2016 (In thousands) Unpaid principal balance (1) Charge-offs and payments applied (2) Recorded investment (3) Related allowance With no allowance recorded: Commercial and industrial $ 15 — 15 Construction and land development 140 (108) 32 Commercial real estate: Other 2,874 (984) 1,890 Total commercial real estate 2,874 (984) 1,890 Total $ 3,029 (1,092) 1,937 With allowance recorded: Commercial real estate: Owner occupied 193 — 193 31 Total commercial real estate 193 — 193 31 Total $ 193 — 193 $ 31 Total impaired loans $ 3,222 (1,092) 2,130 $ 31 (1) Unpaid principal balance represents the contractual obligation due from the customer. (2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been applied against the outstanding principal balance. (3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before any related allowance for loan losses. December 31, 2015 (In thousands) Unpaid principal balance (1) Charge-offs and payments applied (2) Recorded investment (3) Related allowance With no allowance recorded: Commercial and industrial $ 48 — 48 Construction and land development 2,582 (1,999) 583 Commercial real estate: Owner occupied 308 (78) 230 Other 2,136 (617) 1,519 Total commercial real estate 2,444 (695) 1,749 Total $ 5,074 (2,694) 2,380 With allowance recorded: Commercial real estate: Owner occupied $ 1,027 — 1,027 $ 121 Total commercial real estate 1,027 — 1,027 121 Total $ 1,027 — 1,027 $ 121 Total impaired loans $ 6,101 (2,694) 3,407 $ 121 (1) Unpaid principal balance represents the contractual obligation due from the customer. (2) Charge-offs and payments applied represents cumulative charge-offs taken, as well as interest payments that have been applied against the outstanding principal balance. (3) Recorded investment represents the unpaid principal balance less charge-offs and payments applied; it is shown before any related allowance for loan losses.
Schedule Of Average Impaired Financing Receivable [Table Text Block]	Year ended December 31, 2016 Year ended December 31, 2015 Average Total interest Average Total interest recorded income recorded income (In thousands) investment recognized investment recognized Impaired loans: Commercial and industrial $ 31 2 $ 60 4 Construction and land development 94 — 603 — Commercial real estate: Owner occupied 699 31 1,328 62 Other 1,687 — 911 18 Total commercial real estate 2,386 31 2,239 80 Residential real estate: Consumer mortgages — — 349 173 Investment property — — 70 76 Total residential real estate — — 419 249 Total $ 2,511 33 $ 3,321 333
Troubled Debt Restructurings on Financing Receivables, Accrual Status [Table Text Block]	TDRs Related (In thousands) Accruing Nonaccrual Total Allowance December 31, 2016 Commercial and industrial $ 15 — 15 $ — Construction and land development — 32 32 — Commercial real estate: Owner occupied 193 — 193 31 Other — 1,818 1,818 — Total commercial real estate 193 1,818 2,011 31 Total $ 208 1,850 2,058 $ 31 December 31, 2015 Commercial and industrial $ 48 — 48 $ — Construction and land development — 582 582 — Commercial real estate: Owner occupied 1,027 230 1,257 121 Total commercial real estate 1,027 230 1,257 121 Total $ 1,075 812 1,887 $ 121
Troubled Debt Restructuring Modifications [Table Text Block]	Pre- Post- modification modification outstanding outstanding Number of recorded recorded ($ in thousands) contracts investment investment December 31, 2016 Commercial real estate: Other 3 $ 3,147 3,137 Total commercial real estate 3 3,147 3,137 Total 3 $ 3,147 3,137 December 31, 2015 Commercial and industrial 1 $ 61 66 Construction and land development 1 116 113 Commercial real estate: Owner occupied 1 216 218 Other 1 592 592 Total commercial real estate 2 808 810 Total 4 $ 985 989
Schedule Of Debtor Troubled Debt Restructuring, Subsequent Defaults [Table Text Block]	Number of Recorded ($ in thousands) Contracts investment (1) December 31, 2015 Commercial real estate: Owner occupied 1 $ 262 Total commercial real estate 1 262 Residential real estate: Investment property 1 150 Total residential real estate 1 150 Total 2 $ 412 (1) Amount as of applicable month end during the respective year for which there was a payment default.

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Premises and Equipment [Abstract]
Premises and Equipment [Table Text Block]	December 31 (Dollars in thousands) 2016 2015 Land $ 7,231 6,106 Buildings and improvements 9,478 9,448 Furniture, fixtures, and equipment 3,210 3,159 Total premises and equipment 19,919 18,713 Less: accumulated depreciation (7,317) (6,847) Premises and equipment, net $ 12,602 11,866

Mortgage Servicing Rights, Net

Mortgage Servicing Rights, Net (Tables)	12 Months Ended
	Dec. 31, 2016
Mortgage Servicing [Abstract]
Schedule Of Servicing Assets At Fair Value [Table Text Block]	Year ended December 31 (Dollars in thousands) 2016 2015 Beginning balance $ 2,316 2,388 Additions, net 324 529 Amortization expense (687) (654) Change in valuation allowance (1) 53 Ending balance $ 1,952 2,316 Valuation allowance included in MSRs, net: Beginning of period $ — 53 End of period 1 — Fair value of amortized MSRs: Beginning of period $ 3,086 3,238 End of period 2,678 3,086
Data And Assumptions Used In Fair Value Calculation Of MSRs [Table Text Block]	December 31 (Dollars in thousands) 2016 2015 Unpaid principal balance $ 338,434 358,928 Weighted average prepayment speed (CPR) 10.9 % 10.0 Discount rate (annual percentage) 10.0 % 10.0 Weighted average coupon interest rate 3.8 % 3.9 Weighted average remaining maturity (months) 257 266 Weighted average servicing fee (basis points) 25.0 25.0
Estimated Amortization Expense Of MSRs For Five Years [Table Text Block]	(Dollars in thousands) December 31, 2016 2017 $ 424 2018 356 2019 301 2020 255 2021 215

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2016
Deposits:
Maturities Of Certificates Of Deposit And Other Time Deposits [Table Text Block]	(Dollars in thousands) December 31, 2016 2017 $ 110,428 2018 43,311 2019 37,817 2020 9,347 2021 7,234 Total certificates of deposit and other time deposits $ 208,137

Short Term Borrowings (Tables)

Short Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2016
Short-term Debt:
Schedule of Short-term Debt [Table Text Block]	2016 2015 Weighted Weighted (Dollars in thousands) Amount Avg. Rate Amount Avg. Rate Federal funds purchased: As of December 31 $ — — $ — — Average during the year 14 1.21 % 16 0.90 % Maximum outstanding at any month-end — — Securities sold under agreements to repurchase: As of December 31 $ 3,366 0.50 % $ 2,951 0.50 % Average during the year 2,969 0.50 % 3,585 0.50 % Maximum outstanding at any month-end 3,507 4,806

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Long-term debt:
Schedule of Long-term Debt Instruments [Table Text Block]	2016 2015 Weighted Weighted (Dollars in thousands) Amount Avg. Rate Amount Avg. Rate Subordinated debentures, due 2033 $ 3,217 3.88 % $ 7,217 3.63 % Total long-term debt $ 3,217 3.88 % $ 7,217 3.63 %
Schedule of Maturities of Long-term Debt [Table Text Block]	(Dollars in thousands) 2017 2018 2019 2020 2021 Thereafter Total Subordinated debentures — — — — — 3,217 3,217 Total long-term debt $ — — — — — 3,217 3,217

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2016
Other Comprehensive Income Loss [Abstract]
Schedule Of Other Comprehensive Income Loss [Table Text Block]	Pre-tax Tax benefit Net of (In thousands) amount (expense) tax amount 2016: Unrealized net holding loss on all other securities $ (4,412) 1,628 (2,784) Reclassification adjustment for net loss on securities recognized in net earnings 221 (82) 139 Other comprehensive loss $ (4,191) 1,546 (2,645) 2015: Unrealized net holding loss on all other securities $ (785) 289 (496) Reclassification adjustment for net gain on securities recognized in net earnings (16) 6 (10) Other comprehensive loss $ (801) 295 (506)

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Taxes
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year ended December 31 (Dollars in thousands) 2016 2015 Current income tax expense: Federal $ 2,143 1,805 State 498 395 Total current income tax expense 2,641 2,200 Deferred income tax expense (benefit): Federal 464 586 State (3) 34 Total deferred income tax expense 461 620 Total income tax expense $ 3,102 2,820
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2016 2015 Percent of Percent of pre-tax pre-tax (Dollars in thousands) Amount earnings Amount earnings Earnings before income taxes $ 11,252 10,678 Income taxes at statutory rate 3,826 34.0 % 3,631 34.0 % Tax-exempt interest (857) (7.6) (873) (8.1) State income taxes, net of federal tax effect 325 2.9 280 2.6 Bank-owned life insurance (155) (1.4) (254) (2.4) Other (37) (0.3) 36 0.3 Total income tax expense $ 3,102 27.6 % 2,820 26.4 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31 (Dollars in thousands) 2016 2015 Deferred tax assets: Allowance for loan losses $ 1,713 1,583 Unrealized loss on securities 414 — Write-downs on other real estate owned — 20 Tax credit carry-forwards — 484 Other 316 519 Total deferred tax assets 2,443 2,606 Deferred tax liabilities: Premises and equipment 205 219 Unrealized gain on securities — 1,132 Originated mortgage servicing rights 721 855 Other 237 205 Total deferred tax liabilities 1,163 2,411 Net deferred tax asset $ 1,280 195
Schedule of Deferred Tax Asset Rollforward [Table Text Block]	Year ended December 31 (Dollars in thousands) 2016 2015 Net deferred tax asset: Balance, beginning of year $ 195 519 Deferred tax expense related to continuing operations (461) (620) Stockholders' equity, for accumulated other comprehensive loss 1,546 296 Balance, end of year $ 1,280 195

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative instruments and hedging activities disclosure abstract
Schedule of Derivative Instruments [Table Text Block]	Other Other Other noninterest Assets Liabilities income Estimated Estimated Gains (Dollars in thousands) Notional Fair Value Fair Value (Losses) December 31, 2016: Pay fixed / receive variable $ 3,967 — 241 $ 199 Pay variable / receive fixed 3,967 241 — (199) Total interest rate swap agreements $ 7,934 241 241 $ — December 31, 2015: Pay fixed / receive variable $ 4,317 — 440 $ 194 Pay variable / receive fixed 4,317 440 — (194) Total interest rate swap agreements $ 8,634 440 440 $ —

Commitment and Contigent Liabil

Commitment and Contigent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Commitments To Extend Credit [Table Text Block]	December 31 (Dollars in thousands) 2016 2015 Commitments to extend credit $ 45,979 $ 52,230 Standby letters of credit 7,432 8,221

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Quoted Prices in Significant Active Markets Other Significant for Observable Unobservable Identical Assets Inputs Inputs (Dollars in thousands) Amount (Level 1) (Level 2) (Level 3) December 31, 2016: Securities available-for-sale: Agency obligations $ 45,471 — 45,471 — Agency RMBS 127,787 — 127,787 — State and political subdivisions 70,314 — 70,314 — Total securities available-for-sale 243,572 — 243,572 — Other assets (1) 241 — 241 — Total assets at fair value $ 243,813 — 243,813 — Other liabilities (1) 241 — 241 — Total liabilities at fair value $ 241 — 241 — December 31, 2015: Securities available-for-sale: Agency obligations $ 60,085 — 60,085 — Agency RMBS 110,954 — 110,954 — State and political subdivisions 70,648 — 70,648 — Total securities available-for-sale 241,687 — 241,687 — Other assets (1) 440 — 440 — Total assets at fair value $ 242,127 — 242,127 — Other liabilities (1) 440 — 440 — Total liabilities at fair value $ 440 — 440 — (1) Represents the fair value of interest rate swap agreements.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]	Quoted Prices in Active Markets Other Significant for Observable Unobservable Identical Assets Inputs Inputs (Dollars in thousands) Amount (Level 1) (Level 2) (Level 3) December 31, 2016: Loans held for sale $ 1,497 — 1,497 — Loans, net (1) 2,099 — — 2,099 Other real estate owned 152 — — 152 Other assets (2) 1,952 — — 1,952 Total assets at fair value $ 5,700 — 1,497 4,203 December 31, 2015: Loans held for sale $ 1,540 — 1,540 — Loans, net (1) 3,286 — — 3,286 Other real estate owned 252 — — 252 Other assets (2) 2,316 — — 2,316 Total assets at fair value $ 7,394 — 1,540 5,854 (1) Loans considered impaired under ASC 310-10-35 Receivables. This amount reflects the recorded investment in impaired loans, net of any related allowance for loan losses. (2) Represents MSRs, net, carried at lower of cost or estimated fair value.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]	Weighted Carrying Average (Dollars in thousands) Amount Valuation Technique Significant Unobservable Input of Input Nonrecurring: Impaired loans $ 2,099 Appraisal Appraisal discounts (%) 45.2 % Other real estate owned 152 Appraisal Appraisal discounts (%) 10.0 % Mortgage servicing rights, net 1,952 Discounted cash flow Prepayment speed or CPR (%) 10.9 % Discount rate (%) 10.0 %
Financial Instruments [Table Text Block]	Fair Value Hierarchy Carrying Estimated Level 1 Level 2 Level 3 (Dollars in thousands) amount fair value inputs inputs Inputs December 31, 2016: Financial Assets: Loans, net (1) $ 426,303 $ 428,446 $ — $ — $ 428,446 Loans held for sale 1,497 1,507 — 1,507 — Financial Liabilities: Time Deposits $ 208,137 $ 207,791 $ — $ 207,791 $ — Long-term debt 3,217 3,217 — 3,217 — December 31, 2015: Financial Assets: Loans, net (1) $ 422,121 $ 427,340 $ — $ — $ 427,340 Loans held for sale 1,540 1,574 — 1,574 — Financial Liabilities: Time Deposits $ 219,598 $ 220,093 $ — $ 220,093 $ — Long-term debt 7,217 7,217 — 7,217 — (1) Represents loans, net of unearned income and the allowance for loan losses.

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Schedule of Related Party Transactions [Table Text Block]	(Dollars in thousands) Amount Loans outstanding at December 31, 2015 $ 3,715 New loans/advances 1,071 Repayments (866) Changes in directors and executive officers 24 Loans outstanding at December 31, 2016 $ 3,944

Regulatory Restrictions and C45

Regulatory Restrictions and Capital Ratios (Tables)	12 Months Ended
	Dec. 31, 2016
Regulatory Capital Requirements [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]	Minimum for capital Minimum to be Actual adequacy purposes well capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio At December 31, 2016: Tier 1 Leverage Capital Auburn National Bancorporation $ 85,480 10.27 % $ 33,293 4.00 % N/A N/A AuburnBank 84,287 10.14 33,259 4.00 $ 41,574 5.00 % Common Equity Tier 1 Capital Auburn National Bancorporation $ 82,642 16.44 % $ 22,621 4.50 % N/A N/A AuburnBank 84,287 16.74 22,663 4.50 $ 32,736 6.50 Tier 1 Risk-Based Capital Auburn National Bancorporation $ 85,480 17.00 % $ 30,162 6.00 % N/A N/A AuburnBank 84,287 16.74 30,218 6.00 $ 40,290 8.00 % Total Risk-Based Capital Auburn National Bancorporation $ 90,254 17.95 % $ 40,216 8.00 % N/A N/A AuburnBank 89,061 17.68 40,290 8.00 $ 50,363 10.00 % At December 31, 2015: Tier 1 Leverage Capital Auburn National Bancorporation $ 84,268 10.35 % $ 32,553 4.00 % N/A N/A AuburnBank 82,848 10.19 32,519 4.00 $ 40,649 5.00 % Common Equity Tier 1 Capital Auburn National Bancorporation $ 77,714 15.28 % $ 22,886 4.50 % N/A N/A AuburnBank 82,848 16.26 22,933 4.50 $ 33,125 6.50 Tier 1 Risk-Based Capital Auburn National Bancorporation $ 84,268 16.57 % $ 30,515 6.00 % N/A N/A AuburnBank 82,848 16.26 30,577 6.00 $ 40,769 8.00 % Total Risk-Based Capital Auburn National Bancorporation $ 88,682 17.44 % $ 40,687 8.00 % N/A N/A AuburnBank 87,262 17.12 40,769 8.00 $ 50,962 10.00 %

Auburn National Bancorporatio46

Auburn National Bancorporation - Parent Company (Tables)	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Balance Sheet [Table Text Block]	CONDENSED BALANCE SHEETS December 31 (Dollars in thousands) 2016 2015 Assets: Cash and due from banks $ 2,190 2,187 Investment in bank subsidiary 83,984 85,529 Other assets 881 845 Total assets $ 87,055 88,561 Liabilities: Accrued expenses and other liabilities $ 1,661 1,395 Long-term debt 3,217 7,217 Total liabilities 4,878 8,612 Stockholders' equity 82,177 79,949 Total liabilities and stockholders' equity $ 87,055 88,561
Schedule of Condensed Income Statement [Table Text Block]	CONDENSED STATEMENTS OF EARNINGS Year ended December 31 (Dollars in thousands) 2016 2015 Income: Dividends from bank subsidiary $ 6,709 3,450 Noninterest income 129 135 Total income 6,838 3,585 Expense: Interest expense 228 236 Gain on early extinguishment of debt (790) — Noninterest expense 193 195 Total expense (369) 431 Earnings before income tax benefit and equity in undistributed earnings of bank subsidiary 7,207 3,154 Income tax expense (benefit) 157 (80) Earnings before equity in undistributed earnings of bank subsidiary 7,050 3,234 Equity in undistributed earnings of bank subsidiary 1,100 4,624 Net earnings $ 8,150 7,858
Schedule of Condensed Cash Flow Statement [Table Text Block]	CONDENSED STATEMENTS OF CASH FLOWS Year ended December 31 (Dollars in thousands) 2016 2015 Cash flows from operating activities: Net earnings $ 8,150 7,858 Adjustments to reconcile net earnings to net cash provided by operating activities: Gain on early extinguishment of debt (790) — Net (increase) decrease in other assets (36) 1 Net increase (decrease) in other liabilities 268 (153) Equity in undistributed earnings of bank subsidiary (1,100) (4,624) Net cash provided by operating activities 6,492 3,082 Cash flows from financing activities: Repayments or retirement of long-term debt (3,210) — Dividends paid (3,279) (3,206) Net cash used in financing activities (6,489) (3,206) Net change in cash and cash equivalents 3 (124) Cash and cash equivalents at beginning of period 2,187 2,311 Cash and cash equivalents at end of period $ 2,190 2,187

Basic and Diluted Earnings Pe47

Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Basic and Diluted Earnings Per Share [Abstract]
Net earnings	$ 8,150	$ 7,858
Basic and diluted weighted average shares outstanding	3,643,504	3,643,428
Basic and diluted earnings per share	$ 2.24	$ 2.16

Variable Interest Entities (Det

Variable Interest Entities (Details) $ in Thousands	Dec. 31, 2016USD ($)
Liability Recognized [Member]
Variable Interest Entities [Line Items]
Trust Preferred Issuance, Liability Recognized	$ 3,217

Variable Interest Entities Text

Variable Interest Entities Textuals (Details) $ in Millions	Dec. 31, 2016USD ($)
Variable Interest Entities (Textuals) [Abstract]
Trust Preferred Securities, Issued	$ 7
Junior Subordinated, Issued	3.2
Equity Interest, ANB Capital Trust	$ 0.2

Security Types (Details)

Security Types (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	$ 3,047	$ 5,000
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	25,983	27,972
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	46,274	45,068
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	168,268	163,647
Available-for-sale Securities, Fair Value, Total	243,572	241,687
Available For Sale Securities, Gross Unrealized Gains	2,391	4,374
Available For Sale Securities, Gross Unrealized Losses	3,512	1,305
Available-for-sale Securities, Amortized Cost Basis	244,693	238,618
US Government and Government Agencies and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	3,047	5,000
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	22,531	25,852
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	19,893	19,463
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	0	9,770
Available-for-sale Securities, Fair Value, Total	45,471	60,085
Available For Sale Securities, Gross Unrealized Gains	331	384
Available For Sale Securities, Gross Unrealized Losses	973	518
Available-for-sale Securities, Amortized Cost Basis	46,113	60,219
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	972	1,623
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	16,171	13,511
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	110,644	95,820
Available-for-sale Securities, Fair Value, Total	127,787	110,954
Available For Sale Securities, Gross Unrealized Gains	551	968
Available For Sale Securities, Gross Unrealized Losses	1,805	780
Available-for-sale Securities, Amortized Cost Basis	129,041	110,766
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	2,480	497
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	10,210	12,094
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	57,624	58,057
Available-for-sale Securities, Fair Value, Total	70,314	70,648
Available For Sale Securities, Gross Unrealized Gains	1,509	3,022
Available For Sale Securities, Gross Unrealized Losses	734	7
Available-for-sale Securities, Amortized Cost Basis	$ 69,539	$ 67,633

Securities Continuous Unrealize

Securities Continuous Unrealized Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 129,858	$ 50,769
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	3,512	370
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	43,597
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	935
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	129,858	94,366
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	3,512	1,305
US Government and Government Agencies and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	20,352	8,157
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	973	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	24,444
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	516
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	20,352	32,601
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	973	518
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	89,062	42,345
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	1,805	367
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	18,184
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	413
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	89,062	60,529
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	1,805	780
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	20,444	267
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	734	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	969
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	6
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	20,444	1,236
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ 734	$ 7

Securities Gross Realized Gain

Securities Gross Realized Gain Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Available-for-sale Securities, Gross Realized Gains	$ 166	$ 16
Available-for-sale Securities, Gross Realized Losses	(387)	0
Available-for-sale Securities, Gross Realized Gain (Loss), Net	$ (221)	$ 16

Securities Textuals (Details)

Securities Textuals (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Securities (Textuals) [Abstract]
Available-for-sale Securities Pledged as Collateral	$ 137.2	$ 133.3
Cost-method Investments, Aggregate Carrying Amount	$ 1.4	$ 1.4

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans And Leases Receivable Disclosure [Abstract]
Commercial and Industrial Loans	$ 49,850	$ 52,479
Construction And Land Development Loans	41,650	43,694
Commericial Real Estate Loans [Abstract]
Commercial Real Estate Owner Occupied Loans	49,745	46,602
Commercial Real Estate Multifamily	46,998	45,264
Commerical Real Estate Other Loans	123,696	111,987
Total Commercial Real Estate Loans	220,439	203,853
Residential Real Estate Loans [Abstract]
Consumer Mortgage Loans	65,564	70,009
Residential Real Estate Investment Property Loans	45,291	46,664
Total Residential Real Estate Loans	110,855	116,673
Consumer Installment And Revolving Loans	8,712	10,220
Total Loans	431,506	426,919
Loans and Leases Receivable Deferred Income	(560)	(509)
Loans, net of unearned income	$ 430,946	$ 426,410

Loans Past Due Analysis (Detail

Loans Past Due Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	$ 427,094	$ 422,794
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	2,042	1,411
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	429,136	424,205
Financing Receivable, Recorded Investment, Nonaccrual Status	2,370	2,714
Total Loans	431,506	426,919
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	49,747	52,387
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	66	49
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	49,813	52,436
Financing Receivable, Recorded Investment, Nonaccrual Status	37	43
Total Loans	49,850	52,479
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	41,223	43,111
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	395	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	41,618	43,111
Financing Receivable, Recorded Investment, Nonaccrual Status	32	583
Total Loans	41,650	43,694
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	49,564	46,372
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	43	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	49,607	46,372
Financing Receivable, Recorded Investment, Nonaccrual Status	138	230
Total Loans	49,745	46,602
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	46,998	45,264
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	46,998	45,264
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Total Loans	46,998	45,264
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	121,608	110,467
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	199	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	121,807	110,467
Financing Receivable, Recorded Investment, Nonaccrual Status	1,889	1,520
Total Loans	123,696	111,987
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	218,170	202,103
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	242	0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	218,412	202,103
Financing Receivable, Recorded Investment, Nonaccrual Status	2,027	1,750
Total Loans	220,439	203,853
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	64,059	68,579
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	1,282	1,105
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	65,341	69,684
Financing Receivable, Recorded Investment, Nonaccrual Status	223	325
Total Loans	65,564	70,009
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	45,243	46,435
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	19	229
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	45,262	46,664
Financing Receivable, Recorded Investment, Nonaccrual Status	29	0
Total Loans	45,291	46,664
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	109,302	115,014
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	1,301	1,334
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	110,603	116,348
Financing Receivable, Recorded Investment, Nonaccrual Status	252	325
Total Loans	110,855	116,673
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Current	8,652	10,179
Financing Receivable, Recorded Investment, 30 To 89 Days Past Due	38	28
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Total Still Accruing	8,690	10,207
Financing Receivable, Recorded Investment, Nonaccrual Status	22	13
Total Loans	$ 8,712	$ 10,220

Allowance for Loan Loss (Detail

Allowance for Loan Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	$ 4,289	$ 4,836
Financing Receivable, Allowance for Credit Losses, Charge-offs	(540)	(1,114)
Financing Receivable, Allowance for Credit Losses, Recoveries	1,379	367
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	839	(747)
Provision for loan losses	(485)	200
Financing Receivable, Allowance for Credit Losses	4,643	4,289
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	523	639
Financing Receivable, Allowance for Credit Losses, Charge-offs	(97)	(100)
Financing Receivable, Allowance for Credit Losses, Recoveries	29	22
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(68)	(78)
Provision for loan losses	85	(38)
Financing Receivable, Allowance for Credit Losses	540	523
Construction And Land Development Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	669	974
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	1,212	17
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	1,212	17
Provision for loan losses	(1,069)	(322)
Financing Receivable, Allowance for Credit Losses	812	669
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	1,879	1,928
Financing Receivable, Allowance for Credit Losses, Charge-offs	(194)	(866)
Financing Receivable, Allowance for Credit Losses, Recoveries	0	0
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(194)	(866)
Provision for loan losses	386	817
Financing Receivable, Allowance for Credit Losses	2,071	1,879
Residential Real Estate Loans, Total [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	1,059	1,119
Financing Receivable, Allowance for Credit Losses, Charge-offs	(182)	(89)
Financing Receivable, Allowance for Credit Losses, Recoveries	127	313
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(55)	224
Provision for loan losses	103	(284)
Financing Receivable, Allowance for Credit Losses	1,107	1,059
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Financing Receivable, Allowance for Credit Losses	159	176
Financing Receivable, Allowance for Credit Losses, Charge-offs	(67)	(59)
Financing Receivable, Allowance for Credit Losses, Recoveries	11	15
Financing Receivable Allowance For Credit Losses Net Chargeoffs Recoveries	(56)	(44)
Provision for loan losses	10	27
Financing Receivable, Allowance for Credit Losses	$ 113	$ 159

Allowance For Loan Loss Additio

Allowance For Loan Loss Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 4,612	$ 4,168
Financing Receivable, Collectively Evaluated for Impairment	429,376	423,512
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	31	121
Financing Receivable, Individually Evaluated for Impairment	2,130	3,407
Allowance for loan losses	4,643	4,289
Total Loans	431,506	426,919
Commercial and Industrial Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	540	523
Financing Receivable, Collectively Evaluated for Impairment	49,835	52,431
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	15	48
Allowance for loan losses	540	523
Total Loans	49,850	52,479
Construction And Land Development Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	812	669
Financing Receivable, Collectively Evaluated for Impairment	41,618	43,111
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	32	583
Allowance for loan losses	812	669
Total Loans	41,650	43,694
Commercial Real Estate Loans, Total [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,040	1,758
Financing Receivable, Collectively Evaluated for Impairment	218,356	201,077
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	31	121
Financing Receivable, Individually Evaluated for Impairment	2,083	2,776
Allowance for loan losses	2,071	1,879
Total Loans	220,439	203,853
Residential Real Estate Loans, Total [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,107	1,059
Financing Receivable, Collectively Evaluated for Impairment	110,855	116,673
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Allowance for loan losses	1,107	1,059
Total Loans	110,855	116,673
Consumer Installment and Revolving Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	113	159
Financing Receivable, Collectively Evaluated for Impairment	8,712	10,220
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Financing Receivable, Individually Evaluated for Impairment	0	0
Allowance for loan losses	113	159
Total Loans	$ 8,712	$ 10,220

Loan Credit Quality Analysis (D

Loan Credit Quality Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	$ 419,974	$ 411,630
Financing Receivable, Recorded Investment, Special Mention	3,319	6,683
Financing Receivable Recorded Investment, Substandard Accruing	5,843	5,892
Financing Receivable, Recorded Investment, Nonaccrual Status	2,370	2,714
Total Loans	431,506	426,919
Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	49,558	48,038
Financing Receivable, Recorded Investment, Special Mention	22	4,075
Financing Receivable Recorded Investment, Substandard Accruing	233	323
Financing Receivable, Recorded Investment, Nonaccrual Status	37	43
Total Loans	49,850	52,479
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	41,165	42,458
Financing Receivable, Recorded Investment, Special Mention	113	60
Financing Receivable Recorded Investment, Substandard Accruing	340	593
Financing Receivable, Recorded Investment, Nonaccrual Status	32	583
Total Loans	41,650	43,694
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	48,788	45,772
Financing Receivable, Recorded Investment, Special Mention	414	381
Financing Receivable Recorded Investment, Substandard Accruing	405	219
Financing Receivable, Recorded Investment, Nonaccrual Status	138	230
Total Loans	49,745	46,602
Commercial Real Estate Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	46,998	45,264
Financing Receivable, Recorded Investment, Special Mention	0	0
Financing Receivable Recorded Investment, Substandard Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Total Loans	46,998	45,264
Commercial Real Estate Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	121,326	110,159
Financing Receivable, Recorded Investment, Special Mention	32	36
Financing Receivable Recorded Investment, Substandard Accruing	449	272
Financing Receivable, Recorded Investment, Nonaccrual Status	1,889	1,520
Total Loans	123,696	111,987
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	217,112	201,195
Financing Receivable, Recorded Investment, Special Mention	446	417
Financing Receivable Recorded Investment, Substandard Accruing	854	491
Financing Receivable, Recorded Investment, Nonaccrual Status	2,027	1,750
Total Loans	220,439	203,853
Residential Real Estate Consumer Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	59,450	64,502
Financing Receivable, Recorded Investment, Special Mention	2,613	1,964
Financing Receivable Recorded Investment, Substandard Accruing	3,278	3,218
Financing Receivable, Recorded Investment, Nonaccrual Status	223	325
Total Loans	65,564	70,009
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	44,109	45,399
Financing Receivable, Recorded Investment, Special Mention	105	112
Financing Receivable Recorded Investment, Substandard Accruing	1,048	1,153
Financing Receivable, Recorded Investment, Nonaccrual Status	29	0
Total Loans	45,291	46,664
Residential Real Estate Loans, Total [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	103,559	109,901
Financing Receivable, Recorded Investment, Special Mention	2,718	2,076
Financing Receivable Recorded Investment, Substandard Accruing	4,326	4,371
Financing Receivable, Recorded Investment, Nonaccrual Status	252	325
Total Loans	110,855	116,673
Consumer Installment and Revolving Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Pass	8,580	10,038
Financing Receivable, Recorded Investment, Special Mention	20	55
Financing Receivable Recorded Investment, Substandard Accruing	90	114
Financing Receivable, Recorded Investment, Nonaccrual Status	22	13
Total Loans	$ 8,712	$ 10,220

Impaired Loans (Details)

Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	$ 3,029	$ 5,074
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied	(1,092)	(2,694)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,937	2,380
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	193	1,027
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	193	1,027
Impaired Financing Receivable, With Related Allowance, Related Allowance	31	121
Impaired Financing Receivable, Unpaid Principal Balance	3,222	6,101
Impaired Financing Receivable, Charge-off And Payments Applied	(1,092)	(2,694)
Impaired Financing Receivable, Recorded Investment	2,130	3,407
Impaired Financing Receivable, Related Allowance	31	121
Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	15	48
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied	0	0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	15	48
Construction And Land Development Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	140	2,582
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied	(108)	(1,999)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	32	583
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		308
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied		(78)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		230
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	193	1,027
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	193	1,027
Impaired Financing Receivable, With Related Allowance, Related Allowance	31	121
Commercial Real Estate Other Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,874	2,136
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied	(984)	(617)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,890	1,519
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,874	2,444
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied	(984)	(695)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,890	1,749
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	193	1,027
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	193	1,027
Impaired Financing Receivable, With Related Allowance, Related Allowance	$ 31	$ 121

Impaired Loans Averages (Detail

Impaired Loans Averages (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 2,511	$ 3,321
Impaired Financing Receivable, Interest Income, Accrual Method	33	333
Commercial and Industrial Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	31	60
Impaired Financing Receivable, Interest Income, Accrual Method	2	4
Construction And Land Development Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	94	603
Impaired Financing Receivable, Interest Income, Accrual Method	0	0
Commercial Real Estate Owner Occupied Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	699	1,328
Impaired Financing Receivable, Interest Income, Accrual Method	31	62
Commercial Real Estate Other Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	1,687	911
Impaired Financing Receivable, Interest Income, Accrual Method	0	18
Commercial Real Estate Loans, Total [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment	2,386	2,239
Impaired Financing Receivable, Interest Income, Accrual Method	$ 31	80
Residential Real Estate Consumer Mortgage Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment		349
Impaired Financing Receivable, Interest Income, Accrual Method		173
Residential Real Estate Investment Property Loans [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment		70
Impaired Financing Receivable, Interest Income, Accrual Method		76
Residential Real Estate Loans, Total [Member]
Impaired Financing Receivable, Average Recorded Investment [Line Items]
Impaired Financing Receivable, Average Recorded Investment		419
Impaired Financing Receivable, Interest Income, Accrual Method		$ 249

Troubled Debt Restructuring (De

Troubled Debt Restructuring (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Impaired Financing Receivable And Troubled Debt Restructing [Line Items]
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing	$ 208	$ 1,075
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual	1,850	812
Impaired Financing Receivable, Trouble Debt Structuring, Total	2,058	1,887
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses	31	121
Commercial and Industrial Loans [Member]
Impaired Financing Receivable And Troubled Debt Restructing [Line Items]
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing	15	48
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual	0	0
Impaired Financing Receivable, Trouble Debt Structuring, Total	15	48
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses	0	0
Construction And Land Development Loans [Member]
Impaired Financing Receivable And Troubled Debt Restructing [Line Items]
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing	0	0
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual	32	582
Impaired Financing Receivable, Trouble Debt Structuring, Total	32	582
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses	0	0
Commercial Real Estate Owner Occupied Loans [Member]
Impaired Financing Receivable And Troubled Debt Restructing [Line Items]
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing	193	1,027
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual	0	230
Impaired Financing Receivable, Trouble Debt Structuring, Total	193	1,257
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses	31	121
Commercial Real Estate Other Loans [Member]
Impaired Financing Receivable And Troubled Debt Restructing [Line Items]
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing	0
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual	1,818
Impaired Financing Receivable, Trouble Debt Structuring, Total	1,818
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses	0
Commercial Real Estate Loans, Total [Member]
Impaired Financing Receivable And Troubled Debt Restructing [Line Items]
Impaired Financing Receivable, Troubled Debt Restructuring, Still Accruing	193	1,027
Impaired Financing Receivable, Troubled Debt Restructuring, Nonaccrual	1,818	230
Impaired Financing Receivable, Trouble Debt Structuring, Total	2,011	1,257
Impaired Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses	$ 31	$ 121

Troubled Debt Restructing Modif

Troubled Debt Restructing Modifications (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	3	4
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 3,147	$ 985
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 3,137	$ 989
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts		1
Financing Receivable, Modification, Pre-Modification Recorded Investment		$ 61
Financing Receivable, Modifications, Post-Modifications Recorded Investment		$ 66
Construction And Land Development Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts		1
Financing Receivable, Modification, Pre-Modification Recorded Investment		$ 116
Financing Receivable, Modifications, Post-Modifications Recorded Investment		$ 113
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts		1
Financing Receivable, Modification, Pre-Modification Recorded Investment		$ 216
Financing Receivable, Modifications, Post-Modifications Recorded Investment		$ 218
Commercial Real Estate Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	3	1
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 3,147	$ 592
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 3,137	$ 592
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modification, Number of Contracts	3	2
Financing Receivable, Modification, Pre-Modification Recorded Investment	$ 3,147	$ 808
Financing Receivable, Modifications, Post-Modifications Recorded Investment	$ 3,137	$ 810

Troubled Debt Restructing Defau

Troubled Debt Restructing Defaults (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 412
Commercial Real Estate Owner Occupied Loans [Member]
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 262
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 262
Residential Real Estate Investment Property Loans [Member]
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 150
Residential Real Estate Loans, Total [Member]
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 150

Loans Textuals (Details)

Loans Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Loan and Lease Disclosure (Textuals) [Abstract]
Percentage Of Loans Secured By Real Estate	86.40%
LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	$ 107	$ 133

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment, Net, by Type [Abstract]
Land	$ 7,231	$ 6,106
Buildings and Improvements	9,478	9,448
Furniture, Fixtures, And Equipment	3,210	3,159
Total Premises and Equipment	19,919	18,713
Less: Accumulated Depreciation and Equipment	(7,317)	(6,847)
Premises and equipment, net	$ 12,602	$ 11,866

Property, Plant Equipment Textu

Property, Plant Equipment Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment, Net, by Type [Abstract]
Depreciation Expense	$ 470	$ 475

Mortgage Servicing Rights, Ne67

Mortgage Servicing Rights, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Servicing Asset at Amortized Value, Balance [Roll Forward]
Servicing Asset at Amortized Cost, Beginning	$ 2,316	$ 2,388
Servicing Asset at Amortized Value, Additions	324	529
Servicing Asset at Amortized Value, Amortization	(687)	(654)
Servicing Asset at Amortized Value, Valuation Allowance	(1)	53
Servicing Asset at Amortized Cost, Ending	1,952	2,316
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance [Abstract]
Valuation Allowance for Impairment of Recognized Servicing Assets, Beginning Balance	0	53
Valuation Allowance for Impairment of Recognized Servicing Assets, Ending Balance	1	0
Servicing Asset at Amortized Value, Fair Value [Abstract]
Servicing Asset at Amortized Value, Fair Value, Beginning	3,086	3,238
Servicing Asset at Amortized Value, Fair Value, Ending	$ 2,678	$ 3,086

Mortgage Servicing Rights, ne68

Mortgage Servicing Rights, net Data and Assumptions for Fair Value Calculation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Servicing Assets And Servicing Liabilities At Fair Value, Assumptions Used To Estimate Fair Value, Unpaid Principal Balance	$ 338,434	$ 358,928
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	10.90%	10.00%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate	10.00%	10.00%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Coupon Interest Rate	3.80%	3.90%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Life	21 years 5 months	22 years 2 months
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Servicing Fee	0.25%	0.25%

Mortgage Servicing Rights, ne69

Mortgage Servicing Rights, net Estimated Amortization Expense For Future Periods (Details) $ in Thousands	Dec. 31, 2016USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 424
Finite-Lived Intangible Assets, Amortization Expense, Year Two	356
Finite-Lived Intangible Assets, Amortization Expense, Year Three	301
Finite-Lived Intangible Assets, Amortization Expense, Year Four	255
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 215

Mortgage Servicing Rights Textu

Mortgage Servicing Rights Textuals (Details)	Dec. 31, 2016
Mortgage Servicing [Abstract]
Weighted Average Amortization In Years	5.9

Deposits Time Deposit Maturitie

Deposits Time Deposit Maturities (Details) $ in Thousands	Dec. 31, 2016USD ($)
Time Deposits, Fiscal Year Maturity [Abstract]
Time Deposit Maturities, Next Twelve Months	$ 110,428
Time Deposit Maturities, Year Two	43,311
Time Deposit Maturities, Year Three	37,817
Time Deposit Maturities, Year Four	9,347
Time Deposit Maturities, Year Five	7,234
Time Deposit Maturities, after Year Five	0
Time Deposits, Total	$ 208,137

Deposits Textuals (Details)

Deposits Textuals (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Time Deposits [Abstract]
Time Deposits, $250,000 or More	$ 59.5	$ 59.6

Short-term Borrowings (Details)

Short-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Short-term Debt	$ 0	$ 0
Short-term Debt, Weighted Average Interest Rate	0.00%	0.00%
Short-term Debt, Average Outstanding Amount	$ 14	$ 16
Short-term Debt, Weighted Average Interest Rate During Year	1.21%	0.90%
Short-term Debt, Maximum Month-end Outstanding Amount	$ 0	$ 0
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Short-term Debt	$ 3,366	$ 2,951
Short-term Debt, Weighted Average Interest Rate	0.50%	0.50%
Short-term Debt, Average Outstanding Amount	$ 2,969	$ 3,585
Short-term Debt, Weighted Average Interest Rate During Year	0.50%	0.50%
Short-term Debt, Maximum Month-end Outstanding Amount	$ 3,507	$ 4,806

Short-term Borrowings Textuals

Short-term Borrowings Textuals (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Short-term Debt:
Federal Funds, Borrowing Capacity	$ 41
Available For Sale Securities Pledged As Collateral For Securities Sold Under Agreements to Repurchase	$ 6	$ 6.3

Long-term Debt (Details)

Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 3,217	$ 7,217
Long-term Debt, Weighted Average Interest Rate	3.88%	3.63%
Subordinated Debentures, due 2033
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 3,217	$ 7,217
Long-term Debt, Weighted Average Interest Rate	3.88%	3.63%

Long-term Debt Maturities (Deta

Long-term Debt Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Maturities of Long-term Debt [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	3,217
Long-term Debt, Total	3,217	$ 7,217
Subordinated Debentures, due 2033
Maturities of Long-term Debt [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	3,217
Long-term Debt, Total	$ 3,217

Other Comprehensive Income (Det

Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Pre-Tax Amount [Member]
Schedule Of Other Comprehesive Income [Line Items]
Unrealized Net Holding Gain (Loss) On All Other Securitiies	$ (4,412)	$ (785)
Reclassification adjustment for loss (gain) on securities recognized in earnings	221	(16)
Other Comprehensive Income (Loss)	(4,191)	(801)
Tax Benefit (Expense) [Member]
Schedule Of Other Comprehesive Income [Line Items]
Unrealized Net Holding Gain (Loss) On All Other Securitiies	1,628	289
Reclassification adjustment for loss (gain) on securities recognized in earnings	(82)	6
Other Comprehensive Income (Loss)	1,546	295
Net Of Tax Amount [Member]
Schedule Of Other Comprehesive Income [Line Items]
Unrealized Net Holding Gain (Loss) On All Other Securitiies	(2,784)	(496)
Reclassification adjustment for loss (gain) on securities recognized in earnings	139	(10)
Other Comprehensive Income (Loss)	$ (2,645)	$ (506)

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 2,143	$ 1,805
Current State and Local Tax Expense (Benefit)	498	395
Current Income Tax Expense (Benefit), Total	2,641	2,200
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	464	586
Deferred State and Local Income Tax Expense (Benefit)	(3)	34
Deferred Income Tax Expense (Benefit), Total	461	620
Income Tax Expense (Benefit), Continuing Operations, Total	$ 3,102	$ 2,820

Income Tax Expense Reconciliati

Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Earnings before income taxes	$ 11,252	$ 10,678
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 3,826	$ 3,631
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	34.00%	34.00%
Income Tax Reconciliation, Tax Exempt Income	$ (857)	$ (873)
Effective Income Tax Rate Reconciliation, Tax Exempt Income	(7.60%)	(8.10%)
Income Tax Reconciliation, State and Local Income Taxes	$ 325	$ 280
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	2.90%	2.60%
Income Tax Reconciliation, Bank Owned Life Insurance	$ (155)	$ (254)
Effective Income Tax Rate Reconciliation, Bank Owned Life Insurance	(1.40%)	(2.40%)
Income Tax Reconciliation, Other Adjustments	$ (37)	$ 36
Effective Income Tax Rate Reconciliation, Other Adjustments	(0.30%)	0.30%
Income Tax Expense (Benefit), Continuing Operations, Total	$ 3,102	$ 2,820
Effective Income Tax Rate, Continuing Operations	27.60%	26.40%

Income Tax, Components of Defer

Income Tax, Components of Deferred Tax Asset and Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets, Gross [Abstract]
Deferred Tax Asset, Allowance For Loan Loss	$ 1,713	$ 1,583
Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross	414	0
Deferred Tax Assets, Other Real Estate Owned Write-downs	0	20
Deferred Tax Assets, Tax Credit Carryforwards, Other	0	484
Deferred Tax Assets, Other	316	519
Deferred Tax Assets, Gross	2,443	2,606
Deferred Tax Liabilities [Abstract]
Deferred Tax Liabilities, Property, Plant and Equipment	205	219
Deferred Tax Liabilities, Unrealized Gains on Available-for-Sale Securities, Gross	0	1,132
Deferred Tax Liabilities, Originated Mortgage Servicing Rights	721	855
Deferred Tax Liabilities, Other	237	205
Deferred Income Tax Liabilities, Gross, Total	1,163	2,411
Deferred Tax Assets (Liabilities), Net	$ 1,280	$ 195	$ 519

Change in Net Deferred Tax Asse

Change in Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Change In Net Deferred Tax Asset (Liability) [Rollforward]
Deferred Tax Assets (Liabilities), Net	$ 195	$ 519
Deferred Tax (Expense) Benefit Related To Continuing Operations	(461)	(620)
Deferred Taxes, Stockholders' Equity For Change In Accumulated Other Comprehensive (Income) Loss	1,546	296
Deferred Tax Assets (Liabilities), Net	$ 1,280	$ 195

Employee Benefits Textuals (Det

Employee Benefits Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
401k Employer Matching Contribution	$ 124	$ 116

Derivative Instruments (Details

Derivative Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Derivative, Notional Amount1	$ 7,934	$ 8,634
DerivativeAssetFairValueGrossAsset	241	440
Derivative Asset, Fair Value, Gross Liability	241	440
Derivative, Gain (Loss) on Derivative, Net	0	0
Derivative, Interest Rate Swap, Pay Fixed, Receive Variable [Member]
Derivative [Line Items]
Derivative, Notional Amount1	3,967	4,317
DerivativeAssetFairValueGrossAsset	0	0
Derivative Asset, Fair Value, Gross Liability	241	440
Derivative, Gain (Loss) on Derivative, Net	199	194
Derivative, Interest Rate Swap, Pay Variable, Receive Fixed [Member]
Derivative [Line Items]
Derivative, Notional Amount1	3,967	4,317
DerivativeAssetFairValueGrossAsset	241	440
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative, Gain (Loss) on Derivative, Net	$ (199)	$ (194)

Commitment and Contingencies (D

Commitment and Contingencies (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commitments to Extend Credit [Member]
Loss Contingencies [Line Items]
Amount of Commitment	$ 45,979	$ 52,230
Financial Standby Letter of Credit [Member]
Loss Contingencies [Line Items]
Amount of Commitment	$ 7,432	$ 8,221

Commitments and Contingencies T

Commitments and Contingencies Textuals (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Liabilty Recorded For Stanby Letter of Credit [Abstract]
Liability Recorded For Standy Letters Of Credit	$ 84	$ 69
Operating Leases, Future Minimum Payments Due [Abstract]
Operating Leases, Future Minimum Payments Due, Current	155
Operating Leases, Future Minimum Payments, Due in Two Years	51
Operating Leases, Future Minimum Payments, Due in Three Years	36
Operating Leases, Future Minimum Payments, Due in Four Years	3
Operating Leases, Future Minimum Payments, Due in Five Years	$ 0

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Measurements, Recurring [Member]
Fair Value Disclosure, Securities Available-for-Sale [Abstract]
Fair Value Disclosure, Agency Obligations	$ 45,471	$ 60,085
Fair Value Disclosure, Agency RMBS	127,787	110,954
Fair Value Disclosure, State and Political Subdivisions	70,314	70,648
Fair Value Disclosure, Securities Available-for-Sale, Total	243,572	241,687
Other Assets, Fair Value Disclosure	241	440
Assets, Fair Value Disclosure, Recurring	243,813	242,127
Liabilities Fair Value Disclosure [Abstract]
Other Liabilities, Fair Value Disclosure	241	440
Liabilities, Fair Value Disclosure, Recurring, Total	241	440
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Disclosure, Securities Available-for-Sale [Abstract]
Fair Value Disclosure, Agency Obligations	0	0
Fair Value Disclosure, Agency RMBS	0	0
Fair Value Disclosure, State and Political Subdivisions	0	0
Fair Value Disclosure, Securities Available-for-Sale, Total	0	0
Other Assets, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure, Recurring	0	0
Liabilities Fair Value Disclosure [Abstract]
Other Liabilities, Fair Value Disclosure	0	0
Liabilities, Fair Value Disclosure, Recurring, Total	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Disclosure, Securities Available-for-Sale [Abstract]
Fair Value Disclosure, Agency Obligations	45,471	60,085
Fair Value Disclosure, Agency RMBS	127,787	110,954
Fair Value Disclosure, State and Political Subdivisions	70,314	70,648
Fair Value Disclosure, Securities Available-for-Sale, Total	243,572	241,687
Other Assets, Fair Value Disclosure	241	440
Assets, Fair Value Disclosure, Recurring	243,813	242,127
Liabilities Fair Value Disclosure [Abstract]
Other Liabilities, Fair Value Disclosure	241	440
Liabilities, Fair Value Disclosure, Recurring, Total	241	440
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosure, Securities Available-for-Sale [Abstract]
Fair Value Disclosure, Agency Obligations	0	0
Fair Value Disclosure, Agency RMBS	0	0
Fair Value Disclosure, State and Political Subdivisions	0	0
Fair Value Disclosure, Securities Available-for-Sale, Total	0	0
Other Assets, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure, Recurring	0	0
Liabilities Fair Value Disclosure [Abstract]
Other Liabilities, Fair Value Disclosure	0	0
Liabilities, Fair Value Disclosure, Recurring, Total	0	0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Loans Held-for-sale, Fair Value Disclosure	1,497	1,540
Impaired Loans, Fair Value Disclosure	2,099	3,286
Other Real Esate Owned, Fair Value Disclosure	152	252
Servicing Asset at Fair Value, Amount	1,952	2,316
Assets, Fair Value Disclosure, Nonrecurring	5,700	7,394
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Loans Held-for-sale, Fair Value Disclosure	0	0
Impaired Loans, Fair Value Disclosure	0	0
Other Real Esate Owned, Fair Value Disclosure	0	0
Servicing Asset at Fair Value, Amount	0	0
Assets, Fair Value Disclosure, Nonrecurring	0	0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Loans Held-for-sale, Fair Value Disclosure	1,497	1,540
Impaired Loans, Fair Value Disclosure	0	0
Other Real Esate Owned, Fair Value Disclosure	0	0
Servicing Asset at Fair Value, Amount	0	0
Assets, Fair Value Disclosure, Nonrecurring	1,497	1,540
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Abstract]
Loans Held-for-sale, Fair Value Disclosure	0	0
Impaired Loans, Fair Value Disclosure	2,099	3,286
Other Real Esate Owned, Fair Value Disclosure	152	252
Servicing Asset at Fair Value, Amount	1,952	2,316
Assets, Fair Value Disclosure, Nonrecurring	$ 4,203	$ 5,854

Fair Value Unobservable Inputs

Fair Value Unobservable Inputs (Details) - Fair Value, Measurements, Nonrecurring [Member] - Carrying (Reported) Amount, Fair Value Disclosure [Member] $ in Thousands	Dec. 31, 2016USD ($)
Impaired Loans [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Assets, Fair Value Disclosure	$ 2,099
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Weighted Average of Input Percent	45.20%
Other Real Estate Owned [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Assets, Fair Value Disclosure	$ 152
Other Real Estate Owned [Member] | Appraisal, Appraisal Discount [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Weighted Average of Input Percent	10.00%
Mortgage Servicing Rights [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Assets, Fair Value Disclosure	$ 1,952
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Weighted Average of Input Percent	10.90%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Weighted Average of Input Percent	10.00%

Fair Value Financial Instrument

Fair Value Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Financial Assets: [Abstract]
Fair Value, Financial Instruments, Loans, Net	$ 426,303	$ 422,121
Fair Value, Financial Instruments, Loans Held For Sale	1,497	1,540
Fair Value, Financial Liabilities: [Abstract]
Fair Value, Financial Instruments, Time Deposits	208,137	219,598
Fair Value, Financial Instruments, Long-term Debt	3,217	7,217
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Financial Assets: [Abstract]
Fair Value, Financial Instruments, Loans, Net	428,446	427,340
Fair Value, Financial Instruments, Loans Held For Sale	1,507	1,574
Fair Value, Financial Liabilities: [Abstract]
Fair Value, Financial Instruments, Time Deposits	207,791	220,093
Fair Value, Financial Instruments, Long-term Debt	3,217	7,217
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Financial Assets: [Abstract]
Fair Value, Financial Instruments, Loans, Net	0	0
Fair Value, Financial Instruments, Loans Held For Sale	0	0
Fair Value, Financial Liabilities: [Abstract]
Fair Value, Financial Instruments, Time Deposits	0	0
Fair Value, Financial Instruments, Long-term Debt	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Financial Assets: [Abstract]
Fair Value, Financial Instruments, Loans, Net	0	0
Fair Value, Financial Instruments, Loans Held For Sale	1,507	1,574
Fair Value, Financial Liabilities: [Abstract]
Fair Value, Financial Instruments, Time Deposits	207,791	220,093
Fair Value, Financial Instruments, Long-term Debt	3,217	7,217
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Financial Assets: [Abstract]
Fair Value, Financial Instruments, Loans, Net	428,446	427,340
Fair Value, Financial Instruments, Loans Held For Sale	0	0
Fair Value, Financial Liabilities: [Abstract]
Fair Value, Financial Instruments, Time Deposits	0	0
Fair Value, Financial Instruments, Long-term Debt	$ 0	$ 0

Related Party Transactions (Det

Related Party Transactions (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Loans and Leases Receivable, Related Parties [Roll Forward]
Loans and Leases Receivable, Related Parties	$ 3,715
Loans and Leases Receivable, Related Parties, Additions	1,071
Loans and Leases Receivable, Related Parties, Payments	(866)
Loans And Leases Receivable Related Parties, Change in Directors And Executive Officers	(24)
Loans and Leases Receivable, Related Parties	$ 3,944

Related Party Transactions Text

Related Party Transactions Textuals (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Deposit Liabilities	$ 17,800	$ 18,100

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Auburn National Bancorporation [Member]
Tier One Leverage Capital [Abstract]
Tier One Leverage Capital	$ 85,480	$ 84,268
Tier One Leverage Capital to Average Assets	10.27%	10.35%
Tier One Leverage Capital Required for Capital Adequacy	$ 33,293	$ 32,553
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Common Equity Tier One Capital [Abstract]
Common Equity Tier One Capital	$ 82,642	$ 77,714
Common Equity Tier One Captial To Risk Weighted Assets	16.44%	15.28%
Common Equity Tier One Captial Required For Capital Adequacy	$ 22,621	$ 22,886
Common Equity Tier One Captial Required for Capital Adequacy To Risk Weighted Assets	4.50%	4.50%
Tier One Risk Based Capital [Abstract]
Tier One Risk Based Capital	$ 85,480	$ 84,268
Tier One Risk Based Capital to Risk Weighted Assets	17.00%	16.57%
Tier One Risk Based Capital Required for Capital Adequacy	$ 30,162	$ 30,515
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Total Risk-Based Capital [Abstract]
Total Risk Based Capital	$ 90,254	$ 88,682
Total Risk Based Capital to Risk Weighted Assets	17.95%	17.44%
Total Risk Based Capital Required for Capital Adequacy	$ 40,216	$ 40,687
Total Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
AuburnBank [Member]
Tier One Leverage Capital [Abstract]
Tier One Leverage Capital	$ 84,287	$ 82,848
Tier One Leverage Capital to Average Assets	10.14%	10.19%
Tier One Leverage Capital Required for Capital Adequacy	$ 33,259	$ 32,519
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 41,574	$ 40,649
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%
Common Equity Tier One Capital [Abstract]
Common Equity Tier One Capital	$ 84,287	$ 82,848
Common Equity Tier One Captial To Risk Weighted Assets	16.74%	16.26%
Common Equity Tier One Captial Required For Capital Adequacy	$ 22,663	$ 22,933
Common Equity Tier One Captial Required for Capital Adequacy To Risk Weighted Assets	4.50%	4.50%
Common Equity Tier One Captial Required For Well Capitalized	$ 32,736	$ 33,125
Common Equity Tier One Captial Required For Well Capitalized To Risk Weighted Assets	6.50%	6.50%
Tier One Risk Based Capital [Abstract]
Tier One Risk Based Capital	$ 84,287	$ 82,848
Tier One Risk Based Capital to Risk Weighted Assets	16.74%	16.26%
Tier One Risk Based Capital Required for Capital Adequacy	$ 30,218	$ 30,577
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Tier One Risk Based Capital Required to be Well Capitalized	$ 40,290	$ 40,769
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	8.00%
Total Risk-Based Capital [Abstract]
Total Risk Based Capital	$ 89,061	$ 87,262
Total Risk Based Capital to Risk Weighted Assets	17.68%	17.12%
Total Risk Based Capital Required for Capital Adequacy	$ 40,290	$ 40,769
Total Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Total Risk Based Capital Required to be Well Capitalized	$ 50,363	$ 50,962
Total Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%

Regulatory Capital Textuals (De

Regulatory Capital Textuals (Details) $ in Millions	Dec. 31, 2016USD ($)
Regulatory Capital Requirements [Abstract]
Regulatory Capital, Dividends Without Approval Of Regulators	$ 10.1
Regulatory Capital, Restricted Investment From Dividends	$ 73.9

Auburn National Bancorporatio93

Auburn National Bancorporation - Parent Only, Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets:
Cash and due from banks	$ 15,673	$ 9,806
Premises and equipment, net	12,602	11,866
Other assets	8,652	8,360
Total assets	831,943	817,189
Liabilities:
Accrued expenses and other liabilities	4,040	3,445
Long-term debt	3,217	7,217
Total liabilities	749,766	737,240
Stockholders' equity:
Total stockholders' equity	82,177	79,949	$ 75,799
Total liabilities and stockholders' equity	831,943	817,189
Parent Company [Member]
Assets:
Cash and due from banks	2,190	2,187
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	83,984	85,529
Other assets	881	845
Total assets	87,055	88,561
Liabilities:
Accrued expenses and other liabilities	1,661	1,395
Long-term debt	3,217	7,217
Total liabilities	4,878	8,612
Stockholders' equity:
Total stockholders' equity	82,177	79,949
Total liabilities and stockholders' equity	$ 87,055	$ 88,561

Auburn National Bancorporatio94

Auburn National Bancorporation - Parent Only, Statement of Earnings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income:
Other noninterest income	$ 1,428	$ 1,502
Other Expenses [Abstract]
Total interest expense	4,084	4,435
(Gain) loss on early extinguishment of debt	(790)	362
Total noninterest expense	15,348	16,372
Income Tax Expense (Benefit)	3,102	2,820
Net earnings	8,150	7,858
Parent Company [Member]
Income:
Dividends from bank subsidiary	6,709	3,450
Other noninterest income	129	135
Total income	6,838	3,585
Other Expenses [Abstract]
Total interest expense	228	236
(Gain) loss on early extinguishment of debt	790
Total noninterest expense	193	195
Operating Expenses	(369)	431
Earnings Before Income Tax Expense (Benefit) And Equity In Undistributed Earnings Of Bank Subsidary	7,207	3,154
Income Tax Expense (Benefit)	157	(80)
Earnings Before Equity In Undistributed Earnings Of Bank Subsidary	7,050	3,234
Equity In Undistributed Earnings Of Bank Subsidary	1,100	4,624
Net earnings	$ 8,150	$ 7,858

Auburn National Bancorporatio95

Auburn National Bancorporation - Parent Only, Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net earnings	$ 8,150	$ 7,858
Adjustments to reconcile net earnings to net cash provided by operating activties:
(Gain) loss on early extinguishment of debt	(790)	362
Depreciation and amortization	1,200	1,166
Net decrease (increase) in other assets	412	(350)
Net increase in accrued expenses and other liabilities	769	304
Net cash provided by operating activities	10,487	10,852
Cash flows from investing activities:
Net cash used in investing activities	(12,582)	(364)
Cash flows from financing activities:
Repayments or retirement of long-term debt	(3,210)	(5,362)
Dividends paid	(3,279)	(3,206)
Net cash provided by (used in) financing activities	9,442	19,939
Net change in cash and cash equivalents	7,347	30,427
Cash and cash equivalents at beginning of period	113,930	83,503
Cash and cash equivalents at end of period	121,277	113,930
Parent Company [Member]
Cash flows from operating activities:
Net earnings	8,150	7,858
Adjustments to reconcile net earnings to net cash provided by operating activties:
(Gain) loss on early extinguishment of debt	(790)
Net decrease (increase) in other assets	(36)	1
Net increase in accrued expenses and other liabilities	268	(153)
Equity In Distributed (Undistributed) Earnings Of Bank Subsidary	(1,100)	(4,624)
Net cash provided by operating activities	6,492	3,082
Cash flows from financing activities:
Repayments or retirement of long-term debt	(3,210)
Dividends paid	(3,279)	(3,206)
Net cash provided by (used in) financing activities	(6,489)	(3,206)
Net change in cash and cash equivalents	3	(124)
Cash and cash equivalents at beginning of period	2,187	2,311
Cash and cash equivalents at end of period	$ 2,190	$ 2,187