American National Bankshares (AMNB) 10-K 15 Mar 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Mar. 07, 2016	Jun. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	AMERICAN NATIONAL BANKSHARES INC.
Entity Central Index Key	741,516
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 190,436,023
Entity Common Stock, Shares Outstanding		8,610,721
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks	$ 19,352	$ 29,272
Interest-bearing deposits in other banks	75,985	38,031
Securities available for sale, at fair value	340,349	344,716
Restricted stock, at cost	5,312	4,367
Loans held for sale	3,266	616
Loans, net of unearned income	1,005,525	840,925
Less allowance for loan losses	(12,601)	(12,427)
Net loans	992,924	828,498
Premises and equipment, net	23,567	23,025
Other real estate owned, net of valuation allowance of $329 in 2015 and $2,971 in 2014	2,184	2,119
Goodwill	43,872	39,043
Core deposit intangibles, net	2,683	2,045
Bank owned life insurance	17,658	15,193
Accrued interest receivable and other assets	20,447	19,567
Total assets	1,547,599	1,346,492
Liabilities:
Demand deposits -- noninterest bearing	322,442	254,458
Demand deposits -- interest bearing	227,030	193,432
Money market deposits	200,495	174,000
Savings deposits	115,383	90,130
Time deposits	397,310	363,817
Total deposits	1,262,660	1,075,837
Customer repurchase agreements	40,611	53,480
Long-term borrowings	9,958	9,935
Junior subordinated debt	27,622	27,521
Accrued interest payable and other liabilities	8,913	5,939
Total liabilities	$ 1,349,764	$ 1,172,712
Commitments and contingencies
Shareholders' equity:
Preferred stock, $5 par, 2,000,000 shares authorized, none outstanding	$ 0	$ 0
Common stock, $1 par, 20,000,000 shares authorized 8,622,007 shares outstanding at December 31, 2015 and 7,873,474 shares outstanding at December 31, 2014	8,605	7,872
Capital in excess of par value	75,375	57,650
Retained earnings	111,565	104,594
Accumulated other comprehensive income, net	2,290	3,664
Total shareholders' equity	197,835	173,780
Total liabilities and shareholders' equity	$ 1,547,599	$ 1,346,492

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Other real estate owned, valuation allowance	$ 329	$ 2,971
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, authorized (in shares)	2,000,000	2,000,000
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, outstanding (in shares)	8,622,007	7,873,474

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest and Dividend Income:
Interest and fees on loans	$ 46,860	$ 39,257	$ 44,817
Interest on federal funds sold	6	0	0
Interest and dividends on securities:
Taxable	4,072	3,775	3,530
Tax-exempt	3,681	3,971	4,213
Dividends	346	296	245
Other interest income	204	156	151
Total interest and dividend income	55,169	47,455	52,956
Interest Expense:
Interest on deposits	4,811	4,654	5,460
Interest on short-term borrowings	9	9	40
Interest on long-term borrowings	324	325	329
Interest on junior subordinated debt	760	742	754
Total interest expense	5,904	5,730	6,583
Net Interest Income	49,265	41,725	46,373
Provision for Loan Losses	950	400	294
Net Interest Income after Provision for Loan Losses	48,315	41,325	46,079
Noninterest Income:
Trust fees	3,935	4,196	3,689
Service charges on deposit accounts	2,066	1,735	1,750
Other fees and commissions	2,377	1,903	1,864
Mortgage banking income	1,320	1,126	2,008
Securities gains, net	867	505	192
Brokerage fees	946	643	469
Income from Small Business Investment Companies	912	176	12
Other	864	892	843
Total noninterest income	13,287	11,176	10,827
Noninterest Expense:
Salaries	16,554	14,688	14,059
Employee benefits	4,311	2,988	3,848
Occupancy and equipment	4,425	3,727	3,614
FDIC assessment	750	647	647
Bank franchise tax	898	901	745
Core deposit intangible amortization	1,201	1,114	1,501
Data processing	1,725	1,448	1,248
Software	1,158	1,019	923
Other real estate owned, net	99	240	1,523
Merger related expenses	1,998	780	0
Other	7,424	7,006	6,997
Total noninterest expense	40,543	34,558	35,105
Income Before Income Taxes	21,059	17,943	21,801
Income Taxes	6,020	5,202	6,054
Net Income	$ 15,039	$ 12,741	$ 15,747
Net Income Per Common Share:
Basic (in dollars per share)	$ 1.73	$ 1.62	$ 2
Diluted (in dollars per share)	$ 1.73	$ 1.62	$ 2
Average Common Shares Outstanding:
Basic (in shares)	8,680,502	7,867,198	7,872,870
Diluted (in shares)	8,688,450	7,877,576	7,884,561

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 15,039	$ 12,741	$ 15,747
Other comprehensive income (loss):
Unrealized gains (losses) on securities available for sale	(1,785)	3,993	(9,379)
Tax effect	626	(1,398)	3,282
Reclassification adjustment for realized gains on securities	(867)	(505)	(192)
Tax effect	303	177	67
Change in unfunded pension liability	538	(1,728)	1,761
Tax effect	(189)	605	(616)
Other comprehensive income (loss)	(1,374)	1,144	(5,077)
Comprehensive income	$ 13,665	$ 13,885	$ 10,670

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2012	$ 163,246	$ 7,847	$ 57,211	$ 90,591	$ 7,597
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15,747			15,747
Other comprehensive income (loss)	(5,077)				(5,077)
Stock options exercised	309	18	291
Equity-based compensation	574	26	548
Cash dividends paid ($0.93 in 2015, $0.92 in 2014 and 2013, per share)	(7,248)			(7,248)
Ending Balance at Dec. 31, 2013	167,551	7,891	58,050	99,090	2,520
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,741			12,741
Other comprehensive income (loss)	1,144				1,144
Stock repurchased	(1,508)	(70)	(1,438)
Stock options exercised	442	26	416
Equity-based compensation	647	25	622
Cash dividends paid ($0.93 in 2015, $0.92 in 2014 and 2013, per share)	(7,237)			(7,237)
Ending Balance at Dec. 31, 2014	173,780	7,872	57,650	104,594	3,664
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15,039			15,039
Other comprehensive income (loss)	(1,374)				(1,374)
Issuance of common stock	20,483	826	19,657
Stock repurchased	(3,506)	(151)	(3,355)
Stock options exercised	789	43	746
Equity-based compensation	692	15	677
Cash dividends paid ($0.93 in 2015, $0.92 in 2014 and 2013, per share)	(8,068)			(8,068)
Ending Balance at Dec. 31, 2015	$ 197,835	$ 8,605	$ 75,375	$ 111,565	$ 2,290

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash dividends paid (in dollars per share)	$ 0.93	$ 0.92	$ 0.92
Stock options exercised (shares)	42,680	26,000	17,475
Equity based compensation (shares)	15,386	25,849	26,310
Stock repurchased during period (shares)	150,656	70,184
Common Stock [Member]
Issuance of common stock (shares)	825,586

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows from Operating Activities:
Net income	$ 15,039	$ 12,741	$ 15,747
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	950	400	294
Depreciation	1,833	1,688	1,734
Net accretion of acquisition accounting adjustments	(3,197)	(2,431)	(7,390)
Core deposit intangible amortization	1,201	1,114	1,501
Net amortization of securities	2,720	2,535	3,158
Net gain on sale or call of securities	(867)	(505)	(192)
Gain on sale of loans held for sale	(1,041)	(883)	(1,705)
Proceeds from sales of loans held for sale	57,421	52,592	92,189
Originations of loans held for sale	(59,030)	(49,565)	(79,392)
Net gain on other real estate owned	(185)	(66)	(85)
Valuation allowance on other real estate owned	86	68	1,070
Net loss on sale of premises and equipment	11	10	0
Equity-based compensation expense	692	647	574
Net change in bank owned life insurance	(510)	(447)	(457)
Deferred income tax expense	1,741	49	2,024
Net change in interest receivable	744	207	(30)
Net change in other assets	1,756	(2,057)	(898)
Net change in interest payable	16	(23)	(145)
Net change in other liabilities	(118)	524	147
Net cash provided by operating activities	19,262	16,598	28,144
Cash Flows from Investing Activities:
Proceeds from sales of securities available for sale	15,425	13,667	2,623
Proceeds from maturities, calls and paydowns of securities available for sale	122,984	78,350	53,792
Purchases of securities available for sale	(120,040)	(89,151)	(79,830)
Net change in restricted stock	(358)	355	398
Net increase in loans	(48,318)	(44,658)	(368)
Proceeds from sale of premises and equipment	44	0	0
Purchases of premises and equipment	(1,474)	(1,049)	(865)
Proceeds from sales of other real estate owned	2,135	1,687	3,612
Cash paid in bank acquisition	(5,935)	0	0
Cash acquired in bank acquisition	18,173	0	0
Net cash used in investing activities	(17,364)	(40,799)	(20,638)
Cash Flows from Financing Activities:
Net change in demand, money market, and savings deposits	70,879	43,943	49,978
Net change in time deposits	(21,089)	(25,781)	(19,692)
Net change in customer repurchase agreements	(12,869)	14,002	(10,464)
Net change in long-term borrowings	0	(38)	(150)
Common stock dividends paid	(8,068)	(7,237)	(7,248)
Repurchase of common stock	(3,506)	(1,508)	0
Proceeds from exercise of stock options	789	442	309
Net cash provided by financing activities	26,136	23,823	12,733
Net Increase (Decrease) in Cash and Cash Equivalents	28,034	(378)	20,239
Cash and Cash Equivalents at Beginning of Period	67,303	67,681	47,442
Cash and Cash Equivalents at End of Period	$ 95,337	$ 67,303	$ 67,681

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Operations and Consolidation The consolidated financial statements include the accounts of American National Bankshares Inc. (the "Company") and its wholly owned subsidiary, American National Bank and Trust Company (the "Bank"). The Bank offers a wide variety of retail, commercial, secondary market mortgage lending, and trust and investment services which also include non-deposit products such as mutual funds and insurance policies. The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, goodwill and intangible assets, other than temporary impairment, the valuation of deferred tax assets and liabilities, and the valuation of foreclosed real estate. In April 2006, AMNB Statutory Trust I, a Delaware statutory trust (the "AMNB Trust") and a wholly owned subsidiary of the Company, was formed for the purpose of issuing preferred securities (the "Trust Preferred Securities") in a private placement pursuant to an applicable exemption from registration. Proceeds from the securities were used to fund the acquisition of Community First Financial Corporation ("Community First") which occurred in April 2006. On July 1, 2011, the Company completed its acquisition of MidCarolina Financial Corporation ("MidCarolina") pursuant to the terms and conditions of the Agreement and Plan of Reorganization, dated December 15, 2010, between the Company and MidCarolina. MidCarolina was headquartered in Burlington, North Carolina, and engaged in banking operations through its subsidiary bank, MidCarolina Bank. The transaction has expanded the Company's footprint in North Carolina, adding eight branches in Alamance and Guilford Counties . In July 2011, and in connection with its acquisition of MidCarolina Financial Corporation, the Company assumed liabilities of the MidCarolina Trust I and MidCarolina Trust II, two separate Delaware statutory trusts (the "MidCarolina Trusts"), which were also formed for the purpose of issuing preferred securities. Refer to Note 12 for further details concerning these entities. On January 1, 2015, the Company completed its acquisition of MainStreet BankShares, Inc. ("MainStreet") pursuant to the terms and conditions of the Agreement and Plan of Reorganization, dated as of August 24, 2014, between the Company and MainStreet (the "MainStreet Merger Agreement"). Immediately after the merger of MainStreet into the Company, Franklin Community Bank, N.A., MainStreet's wholly-owned bank subsidiary ("Franklin Bank"), merged with and into the Bank. Franklin Bank provided banking services to its customers from three banking offices located in Rocky Mount, Hardy, and Union Hall, Virginia. Refer to Note 2 for further details on the merger. All significant inter-company transactions and accounts are eliminated in consolidation, with the exception of the AMNB Trust and the MidCarolina Trusts, as detailed in Note 12. Cash and Cash Equivalents Cash includes cash on hand, cash with correspondent banks, and cash on deposit at the Federal Reserve Bank of Richmond. Cash equivalents are short-term, highly liquid investments that are readily convertible to cash with original maturities of three months or less and are subject to an insignificant risk of change in value. Cash and cash equivalents are carried at cost. Interest-bearing Deposits in Other Banks Interest-bearing deposits in other banks mature within one year and are carried at cost. Securities Certain debt securities that management has the positive intent and ability to hold to maturity are classified as "held to maturity" and recorded at amortized cost. Trading securities are recorded at fair value with changes in fair value included in earnings. Securities not classified as held to maturity or trading, including equity securities with readily determinable fair values, are classified as "available for sale" and recorded at fair value, with unrealized gains and losses excluded from earnings and reported in other comprehensive income. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. The Company does not currently have any securities in held to maturity or trading and has no plans to add any to either category. The Company follows accounting guidance related to recognition and presentation of other-than-temporary impairment. The guidance specifies that (1) if a company does not have the intent to sell a debt security prior to recovery and (2) it is more likely than not that it will not have to sell the debt security prior to recovery, the security would not be considered other-than-temporarily impaired, unless there is a credit loss. When an entity does not intend to sell the security and it is more likely than not the entity will not have to sell the security before recovery of its cost basis, it will recognize the credit component of an other-than-temporary impairment of a debt security in earnings and the remaining portion in other comprehensive income. For held-to-maturity debt securities, the amount of an other-than-temporary impairment recorded in other comprehensive income for the noncredit portion of a previous other-than-temporary impairment should be amortized prospectively over the remaining life of the security on the basis of the timing of future estimated cash flows of the security. For equity securities, when the Company has decided to sell an impaired available for sale security and the entity does not expect the fair value of the security to fully recover before the expected time of sale, the security is deemed other-than-temporarily impaired in the period in which the decision to sell is made. The Company recognizes an impairment loss when the impairment is deemed other-than-temporary even if a decision to sell has not been made. Due to the nature and restrictions placed on the Company's investment in common stock of the Federal Home Loan Bank of Atlanta ("FHLB") and the Federal Reserve Bank of Richmond, these securities have been classified as restricted equity securities and carried at cost. Loans Held for Sale Secondary market mortgage loans are designated as held for sale at the time of their origination. These loans are pre-sold with servicing released and the Company does not retain any interest after the loans are sold. These loans consist primarily of fixed-rate, single-family residential mortgage loans which meet the underwriting characteristics of certain government-sponsored enterprises (conforming loans). In addition, the Company requires a firm purchase commitment from a permanent investor before a loan can be committed, thus limiting interest rate risk. Loans held for sale are carried at fair value. Gains on sales of loans are recognized at the loan closing date and are included in noninterest income. Derivative Loan Commitments The Company enters into mortgage loan commitments whereby the interest rate on the loan is determined prior to funding (rate lock commitments). Mortgage loan commitments are referred to as derivative loan commitments if the loan that will result from exercise of the commitment will be held for sale upon funding. Loan commitments that are derivatives are recognized at fair value on the consolidated balance sheets with net changes in their fair values recorded in other expenses. Derivative loan commitments resulted in no income or loss for 2015 , 2014 or 2013 . The period of time between issuance of a loan commitment and sale of the loan generally ranges from 30 to 60 days . The Company protects itself from changes in interest rates through the use of best efforts forward delivery contracts, by committing to sell a loan at the time the borrower commits to an interest rate with the intent that the buyer has assumed the interest rate risk on the loan. As a result, the Company is not generally exposed to significant losses nor will it realize significant gains related to its rate lock commitments due to changes in interest rates. The correlation between the rate lock commitments and the best efforts contracts is very high due to their similarity. The fair value of rate lock commitments and best efforts contracts is not readily ascertainable with precision because rate lock commitments and best efforts contracts are not actively traded in stand-alone markets. The Company determines the fair value of rate lock commitments and best efforts contracts by measuring the change in the estimated value of the underlying assets while taking into consideration the probability that the loan will be funded. Loans The Company makes mortgage, commercial, and consumer loans. A substantial portion of the loan portfolio is secured by real estate. The ability of the Company's debtors to honor their contracts is dependent upon the real estate market and general economic conditions in the Company's market area. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off, generally are reported at their outstanding unpaid principal balance adjusted for the allowance for loan losses, and any deferred fees or costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.The accrual of interest on loans is generally discontinued at the time the loan is 90 days delinquent unless the credit is well-secured and in process of collection. Loans are typically charged off when the loan is 120 days past due, unless secured and in process of collection. Loans are placed on nonaccrual status or charged-off at an earlier date if collection of principal or interest is considered doubtful. Interest accrued but not collected for loans that are placed on nonaccrual status or charged-off is reversed against interest income. The interest on these loans is accounted for on the cash basis or cost recovery method, until qualifying for return to accrual status. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. A loan is considered past due when a payment of principal or interest or both is due but not paid. Management closely monitors past due loans in timeframes of 30-59 days, 60-89 days, and 90 or more days past due. These policies apply to all loan portfolio classes and segments. Substandard and doubtful risk graded commercial, commercial real estate, and construction loans equal to or greater than $100,000 on an unsecured basis, and equal to or greater than $250,000 on a secured basis are reviewed for impairment. All troubled debt restructurings, regardless of dollar amount, are also evaluated for impairment. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment and establishing a specific allowance include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis for commercial, commercial real estate, and construction loans by either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's obtainable market price, or the fair value of the collateral if the loan is collateral dependent. Generally, large groups of smaller balance homogeneous loans (residential real estate and consumer loans) are collectively evaluated for impairment. The Company's policy for recognizing interest income on impaired loans is consistent with its nonaccrual policy. The Company's loan portfolio is organized by major segment. These include: commercial, commercial real estate, residential real estate and consumer loans. Each segment has particular risk characteristics that are specific to the borrower and the generic category of credit. Commercial loan repayments are highly dependent on cash flows associated with the underlying business and its profitability. They can also be impacted by changes in collateral values. Commercial real estate loans share the same general risk characteristics as commercial loans, but are often more dependent on the value of the underlying real estate collateral and, when construction is involved, the ultimate completion of and sale of the project. Residential real estate loans are generally dependent on the value of collateral and the credit worthiness of the underlying borrower. Consumer loans are very similar in risk characteristics to residential real estate. In connection with the MidCarolina and MainStreet mergers, certain loans were acquired which exhibited deteriorated credit quality since origination and for which the Bank does not expect to collect all contractual payments. These purchased credit impaired loans are recorded at the amount paid, such that there is no carryover of the seller's allowance for loan losses. After acquisition, losses are recognized by an increase in the allowance for loan losses. Such purchased credit impaired loans are accounted for individually or aggregated into pools of loans based on common risk characteristics such as, credit score, loan type, and date of origination. The Company estimates the amount and timing of expected cash flows for each loan or pool, and the expected cash flows in excess of amount paid is recorded as interest income over the remaining life of the loan or pool (accretable yield). The excess of the loan's or pool's contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan or pool, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded as a provision for loan losses. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest income. Troubled Debt Restructurings In situations where, for economic or legal reasons related to a borrower's financial condition, management may grant a concession to the borrower that it would not otherwise consider, the related loan is classified as a troubled debt restructuring ("TDRs"). Management strives to identify borrowers in financial difficulty early and work with them to modify their loan to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where borrowers are granted new terms that provide for a reduction of either interest or principal, management measures any impairment on the restructuring as noted above for impaired loans. The Company has $1,958,000 in loans classified as TDRs as of December 31, 2015 and $2,862,000 as of December 31, 2014 . Allowance for Loan Losses The purpose of the allowance for loan losses ("ALLL") is to provide for probable losses inherent in the loan portfolio. The allowance is increased by the provision for loan losses and by recoveries of previously charged-off loans. Loan charge-offs decrease the allowance. The goal of the Company is to maintain an appropriate, systematic, and consistently applied process to determine the amounts of the ALLL and the provision for loan loss expense. The Company uses certain practices to manage its credit risk. These practices include (1) appropriate lending limits for loan officers, (2) a loan approval process, (3) careful underwriting of loan requests, including analysis of borrowers, cash flows, collateral, and market risks, (4) regular monitoring of the portfolio, including diversification by type and geography, (5) review of loans by the Loan Review department, which operates independently of loan production (the Loan Review function consists of a co-sourced arrangement using both internal personnel and external vendors to provide the Company with a more robust review function of the loan portfolio), (6) regular meetings of the Credit Committees to discuss portfolio and policy changes and make decisions on large or unusual loan requests, and (7) regular meetings of the Asset Quality Committee which reviews the status of individual loans. Risk grades are assigned as part of the loan origination process. From time to time risk grades may be modified as warranted by the facts and circumstances surrounding the credit. Calculation and analysis of the allowance for loan losses is prepared quarterly by the Finance Department. The Company's Credit Committee, Capital Management Committee, Audit Committee, and the Board of Directors review the allowance for adequacy. The Company's allowance for loan losses has two basic components: the formula allowance and the specific allowance. Each of these components is determined based upon estimates and judgments. The formula allowance uses historical loss experience as an indicator of future losses, along with various qualitative factors, including levels and trends in delinquencies, nonaccrual loans, charge-offs and recoveries, trends in volume and terms of loans, effects of changes in underwriting standards, experience of lending staff, economic conditions, and portfolio concentrations. In the formula allowance for commercial and commercial real estate loans, the historical loss rate is combined with the qualitative factors, resulting in an adjusted loss factor for each risk-grade category of loans. The period-end balances for each loan risk-grade category are multiplied by the adjusted loss factor. Allowance calculations for consumer loans are calculated based on historical losses for each product category without regard to risk grade. This loss rate is combined with qualitative factors resulting in an adjusted loss factor for each product category. The specific allowance uses various techniques to arrive at an estimate of loss for specifically identified impaired loans. These include: • The present value of expected future cash flows discounted at the loan's effective interest rate. The effective interest rate on a loan is the rate of return implicit in the loan (that is, the contractual interest rate adjusted for any net deferred loan fees or costs and any premium or discount existing at the origination or acquisition of the loan); • The loan's observable market price, or • The fair value of the collateral, net of estimated costs to dispose, if the loan is collateral dependent. The use of these computed values is inherently subjective and actual losses could be greater or less than the estimates. No single statistic, formula, or measurement determines the adequacy of the allowance. Management makes subjective and complex judgments about matters that are inherently uncertain, and different amounts would be reported under different conditions or using different assumptions. For analytical purposes, management allocates a portion of the allowance to specific loan categories and specific loans. However, the entire allowance is used to absorb credit losses inherent in the loan portfolio, including identified and unidentified losses. The relationships and ratios used in calculating the allowance, including the qualitative factors, may change from period to period as facts and circumstances evolve. Furthermore, management cannot provide assurance that in any particular period the Company will not have sizeable credit losses in relation to the amount reserved. Management may find it necessary to significantly adjust the allowance, considering current factors at the time. Premises and Equipment Land is carried at cost. Premises and equipment are stated at cost, less accumulated depreciation and amortization. Premises and equipment are depreciated over their estimated useful lives ranging from three years to thirty-nine years ; leasehold improvements are amortized over the lives of the respective leases or the estimated useful lives of the improvements, whichever is less. Software is generally amortized over three years . Depreciation and amortization are recorded on the straight-line method. Costs of maintenance and repairs are charged to expense as incurred. Costs of replacing structural parts of major units are considered individually and are expensed or capitalized as the facts dictate. Gains and losses on routine dispositions are reflected in current operations. Goodwill and Intangible Assets Goodwill is subject to at least an annual assessment for impairment by applying a fair value based test. Additionally, acquired intangible assets (such as core deposit intangibles) are separately recognized if the benefit of the assets can be sold, transferred, licensed, rented, or exchanged, and amortized over their useful lives. Intangible assets related to branch transactions continued to amortize. The cost of purchased deposit relationships and other intangible assets, based on independent valuation, are being amortized over their estimated lives ranging from eight to ten years. The Company records as goodwill the excess of purchase price over the fair value of the identifiable net assets acquired. Impairment testing is performed annually, as well as when an event triggering impairment may have occurred. The Company performs its annual analysis as of June 30 each fiscal year. Accounting guidance permits preliminary assessment of qualitative factors to determine whether more substantial impairment testing is required. The Company chose to bypass the preliminary assessment and utilized a two-step process for impairment testing of goodwill. The first step tests for impairment, while the second step, if necessary, measures the impairment. No indicators of impairment were identified during the years ended December 31, 2015 , 2014 , and 2013 . Trust Assets Securities and other property held by the trust and investment services segment in a fiduciary or agency capacity are not assets of the Company and are not included in the accompanying consolidated financial statements. Other Real Estate Owned Other real estate owned represents real estate that has been acquired through loan foreclosures or deeds received in lieu of loan payments. Generally, such properties are appraised at the time acquired, and are recorded at the fair value less estimated selling costs. Subsequent to foreclosure, valuations are periodically performed by management and the assets are carried at the lower of carrying amount or fair value less cost to sell. Revenue and expenses from operations and changes in the valuation allowance are included in noninterest expense. Bank Owned Life Insurance (BOLI) The Company has acquired BOLI in connection with three acquisitions over the past decade. The asset is reflected as the cash surrender value of the policies as provided by the insurer on a monthly basis. Transfers of Financial Assets Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company – put presumptively beyond reach of the transferor and its creditors, even in bankruptcy or other receivership, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of 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 or the ability to unilaterally cause the holder to return specific assets. Income Taxes The Company uses the balance sheet method to account for deferred income tax assets and liabilities. Under this method, the net deferred tax asset or liability is determined based on the tax effects of the temporary differences between the book and tax bases of the various balance sheet assets and liabilities and gives current recognition to changes in tax rates and laws. When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the position taken or the amount of the position that would be ultimately sustained. The benefit of a tax position is recognized in the financial statements in the period during which, based on all available evidence, management believes it is more likely than not that the position will be sustained upon examination, including the resolution of appeals or litigation processes, if any. Tax positions taken are not offset or aggregated with other positions. Tax positions that meet the more-likely-than-not recognition threshold are measured as the largest amount of tax benefit that is more than 50 percent likely of being realized upon settlement with the applicable taxing authority. The portion of the benefits associated with tax positions taken that exceeds the amount measured as described above is reflected as a liability for unrecognized tax benefits in the accompanying consolidated balance sheet along with any associated interest and penalties that would be payable to the taxing authorities upon examination. The Company had no liability for unrecognized tax benefits as of December 31, 2015 and 2014 . Stock-Based Compensation Stock compensation accounting guidance Accounting Standards Codification ("ASC 718"), " Compensation – Stock Compensation " requires that the compensation cost relating to share-based payment transactions be recognized in financial statements. That cost will be measured based on the grant date fair value of the equity or liability instruments issued. The stock compensation accounting guidance covers a wide range of share-based compensation arrangements including stock options, restricted share plans, performance-based awards, share appreciation rights, and employee share purchase plans. The stock compensation accounting guidance requires that compensation cost for all stock awards be calculated and recognized over the employees' service period, generally defined as the vesting period. For awards with graded-vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. A Black-Scholes model is used to estimate the fair value of stock options, while the market price of the Company's common stock at the date of grant is used for restricted stock awards. Earnings Per Common Share Basic earnings per common share represent income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per common share reflect the impact of additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustment to income that would result from the assumed issuance. Potential common shares that may be issued by the Company consist solely of outstanding stock options, and are determined using the treasury method. Nonvested shares of restricted stock are included in the computation of basic earning per share because the holder has voting rights and shares in non-forfeitable dividends during the vesting period. Comprehensive Income Comprehensive income is shown in a two statement approach, the first statement presents total net income and its components followed by a second statement that presents all the components of other comprehensive income such as unrealized gains and losses on available for sale securities and changes in the funded status of a defined benefit postretirement plan. Advertising and Marketing Costs Advertising and marketing costs are expensed as incurred, and were $356,000 , $453,000 , and $607,000 in 2015 , 2014 , and 2013 , respectively. Mergers and Acquisitions Business combinations are accounted for under ASC 805, " Business Combinations" , using the acquisition method of accounting. The acquisition method of accounting requires an acquirer to recognize the assets acquired and the liabilities assumed at the acquisition date measured at their fair values as of that date. To determine the fair values, the Company relies on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques. Under the acquisition method of accounting, the Company identifies the acquirer and the closing date and applies applicable recognition principles and conditions. Acquisition-related costs are costs the Company incurs to effect a business combination. Those costs include advisory, legal, accounting, valuation, and other professional or consulting fees. Some other examples of costs to the Company include systems conversions, integration planning consultants and advertising costs. The Company accounts for acquisition-related costs as expenses in the periods in which the costs are incurred and the services are received, with one exception. The costs to issue debt or equity securities is recognized in accordance with other applicable GAAP. These acquisition-related costs have been and will be included within the Consolidated Statements of Income classified within the noninterest expense caption. Reclassifications Certain reclassifications have been made in prior years financial statements to conform to classifications used in the current year. There were no material reclassifications. Use of Estimates In preparing consolidated financial statements in conformity with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, the valuation of other real estate owned, goodwill and intangible assets, the valuation of deferred tax assets, other-than-temporary impairments of securities, and acquired loans with specific credit-related deterioration. Recent Accounting Pronouncements In June 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Updated ("ASU") No. 2014-12, “Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period.” The new guidance applies to reporting entities that grant employees share-based payments in which the terms of the award allow a performance target to be achieved after the requisite service period. The amendments in the ASU require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. Existing guidance in “Compensation - Stock Compensation (Topic 718),” should be applied to account for these types of awards. The amendments in this ASU are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Early adoption is permitted and reporting entities may choose

Acquisition of MainStreet BankS

Acquisition of MainStreet BankShares, Inc.	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Acquisition of MainStreet BankShares, Inc.	Acquisition of MainStreet BankShares, Inc . On January 1, 2015, the Company completed its acquisition of MainStreet. The merger of MainStreet with and into the Company was effected pursuant to the terms and conditions of the MainStreet Merger Agreement. Immediately after the merger, Franklin Bank, MainStreet's wholly owned bank subsidiary, merged with and into the Bank. Pursuant to the MainStreet Merger Agreement, holders of shares of MainStreet common stock received $3.46 in cash and 0.482 shares of the Company's common stock for each share of MainStreet common stock held immediately prior to the effective date of the merger, plus cash in lieu of fractional shares. Each option to purchase shares of MainStreet common stock that was outstanding immediately prior to the effective date of the merger vested upon the merger and was converted into an option to purchase shares of the Company's common stock, adjusted based on a 0.643 exchange ratio. Each share of the Company's common stock outstanding immediately prior to the merger remained outstanding and was unaffected by the merger. The cash portion of the merger consideration was funded through a cash dividend of $6,000,000 from the Bank to the Company, and no borrowing was incurred by the Company or the Bank in connection with the merger. Replacement stock option awards representing 43,086 shares of the Company's common stock were granted in conjunction with the MainStreet acquisition. The transaction was accounted for using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration exchanged were recorded at estimated fair values on the acquisition date. Fair values are preliminary and subject to refinement for up to one year after the closing date of the acquisition. In connection with the acquisition, the consideration paid, and the fair value of identifiable assets acquired and liabilities assumed as of the merger date are summarized in the following table (dollar in thousands): Consideration Paid: Common shares issued (825,586) $ 20,483 Cash paid to Shareholders 5,935 Value of consideration 26,418 Assets acquired: Cash and cash equivalents 18,173 Investment securities 18,507 Restricted stock 587 Loans 115,960 Premises and equipment 956 Deferred income taxes 2,794 Core deposit intangible 1,839 Other real estate owned 168 Bank owned life insurance 1,955 Accrued interest receivable and other assets 1,049 Total assets 161,988 Liabilities assumed: Deposits 137,323 Accrued interest payable and other liabilities 3,076 Total liabilities 140,399 Net assets acquired 21,589 Goodwill resulting from merger with MainStreet $ 4,829 The following table details the changes in fair value of net assets acquired and liabilities assumed from the amounts originally reported in the Form 10-Q for the quarterly period ended September 30, 2015 (dollars in thousands): Goodwill at September 30, 2015 $ 5,290 Effect of adjustments to: Loans (723 ) Deferred income taxes 262 Goodwill at December 31, 2015 $ 4,829 The decrease in goodwill made during the fourth quarter of 2015 was due to a revaluation of the loan portfolio. As part of management's revaluation process, information and payments received subsequent to the initial valuation provided evidence that the credit mark on certain purchase credit impaired loans was too large. Management determined that these conditions existed as of the date of acquisition, but the information was not readily available. The revaluation process resulted in a reduction of $723,000 in the credit mark for acquired impaired loans and an increase in deferred taxes of $262,000 for a net decrease in goodwill of $461,000 . In many cases, the fair values of assets acquired and liabilities assumed were determined by estimating the cash flows expected to result from those assets and liabilities and discounting them at appropriate market rates. The most significant category of assets for which this procedure was used was that of acquired loans. The Company acquired the $122,336,000 loan portfolio at a fair value discount of $6,376,000 . The estimated fair value of the performing portion of the portfolio was $87,990,000 . The excess of expected cash flows above the fair value of the performing portion of loans will be accreted to interest income over the remaining lives of the loans in accordance with FASB Accounting Standards Codification ("ASC") 310-20. Certain loans, those for which specific credit-related deterioration since origination was identified, are recorded at fair value, reflecting the present value of the amounts expected to be collected. Income recognition on these loans is based on reasonable expectations about the timing and amount of cash flows to be collected. Acquired loans deemed impaired and considered collateral dependent, with the timing of the sale of loan collateral indeterminate, remain on non-accrual status and have no accretable yield. The following table details the acquired loans that are accounted for in accordance with FASB ASC 310-30 as of January 1, 2015, after adjusting for the aforementioned revaluation in the third quarter (dollars in thousands): Contractually required principal and interest at acquisition $ 33,066 Contractual cash flows not expected to be collected (nonaccretable difference) 2,044 Expected cash flows at acquisition 35,110 Interest component of expected cash flows (accretable discount) 7,140 Fair value of acquired impaired loans accounted for under FASB ASC 310-30 $ 27,970 In accordance with GAAP, there was no carryover of the allowance for loan losses that had been previously recorded by MainStreet. In connection with the acquisition of MainStreet, the Company acquired an investment portfolio with a fair value of $18,507,000 . The fair value of the investment portfolio was determined by taking into account market prices obtained from independent valuation sources. In connection with the acquisition of MainStreet, the Company recorded a deferred income tax asset of $2,794,000 related to tax attributes of MainStreet, along with the effects of fair value adjustments resulting from applying the acquisition method of accounting. In connection with the acquisition of MainStreet, the Company acquired other real estate owned with a fair value of $168,000 . Other real estate owned was measured at fair value less estimated cost to sell. In connection with the acquisition of MainStreet, the Company acquired premises and equipment with a fair value of $956,000 . Leases assumed were determined to be at fair value and required no acquisition related adjustment. The fair value of savings and transaction deposit accounts acquired from MainStreet was assumed to approximate their carrying value as these accounts have no stated maturity and are payable on demand. Certificates of deposit accounts were valued by comparing the contractual cost of the portfolio to an identical portfolio bearing current market rates. The portfolio was segregated into pools based on segments: retail, individual retirement accounts, and brokered. For each segment, the projected cash flows from maturing certificates were then calculated based on contractual rates and prevailing market rates. The valuation adjustment for each segment is equal to the present value of the difference of these two cash flows, discounted at the assumed market rate for a certificate with a corresponding maturity. This valuation adjustment of $290,000 was accreted to reduce interest expense over the average remaining maturities of the respective pools, which was estimated to be 12 months . A core deposit intangible of $1,839,000 was recognized in connection with the acquisition of MainStreet. This intangible will be amortized over a 10 year period on an accelerated cost recovery basis. Direct costs related to the acquisition were expensed as incurred. During 2015, the Company incurred $1,998,000 acquisition related expenses. The following table presents certain pro forma information as if MainStreet had been acquired on January 1, 2013. These results combine the historical results of MainStreet into the Company's Consolidated Statement of Income, and while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on January 1, 2013. In particular, no adjustments have been made to adjust provision for loan losses on the acquired loan portfolio and related income taxes had they been recorded at fair value on January 1, 2013. In addition, expenses related to systems conversions and other costs of integration were expensed as incurred during 2015. The Company expects to achieve further operating cost savings and other business synergies, including branch closures, as a result of the acquisition which are not reflected in the pro forma amounts below (dollars in thousands): Pro forma 2014 2013 (unaudited) (unaudited) Net interest income $ 48,522 $ 53,294 Provision for loan losses 458 437 Non-interest income 12,081 10,195 Non-interest expense 40,148 39,011 Income Taxes 5,999 7,212 Net income $ 13,998 $ 16,829

Restrictions on Cash

Restrictions on Cash	12 Months Ended
	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Restrictions on Cash	Restrictions on Cash The Company is a member of the Federal Reserve System and is required to maintain certain levels of its cash and cash equivalents as reserves based on regulatory requirements. This reserve requirement was $0 at December 31, 2015 and 2014 . The Company maintains cash accounts in other commercial banks. The amount on deposit with correspondent institutions at December 31, 2015 exceeded the insurance limits of the Federal Deposit Insurance Corporation by $213,000 .

Securities

Securities	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost and estimated fair value of investments in debt securities at December 31, 2015 and 2014 were as follows (dollars in thousands): December 31, 2015 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Securities available for sale: Federal agencies and GSEs $ 81,601 $ 170 $ 319 $ 81,452 Mortgage-backed and CMOs 70,520 799 389 70,930 State and municipal 170,268 5,659 36 175,891 Corporate 10,619 28 57 10,590 Equity securities 1,000 486 — 1,486 Total securities available for sale $ 334,008 $ 7,142 $ 801 $ 340,349 December 31, 2014 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Securities available for sale: Federal agencies and GSEs $ 81,958 $ 252 $ 104 $ 82,106 Mortgage-backed and CMOs 56,289 1,248 112 57,425 State and municipal 188,060 7,523 90 195,493 Corporate 8,416 16 53 8,379 Equity securities 1,000 313 — 1,313 Total securities available for sale $ 335,723 $ 9,352 $ 359 $ 344,716 The amortized cost and estimated fair value of investments in securities at December 31, 2015 , by contractual maturity, are shown in the following table. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Because mortgage-backed securities have both known principal repayment terms as well as unknown principal repayments due to potential borrower pre-payments, it is difficult to accurately predict the final maturity of these investments. Mortgage-backed securities are shown separately (dollars in thousands): Available for Sale Amortized Cost Fair Value Due in one year or less $ 28,046 $ 28,134 Due after one year through five years 119,404 121,825 Due after five years through ten years 91,445 93,918 Due after ten years 23,593 24,056 Mortgage-backed and CMOs 70,520 70,930 Equity securities 1,000 1,486 $ 334,008 $ 340,349 Gross realized gains and losses from the sale of securities available for sale were as follows (dollars in thousands): For the Years Ended December 31, 2015 2014 2013 Realized gains $ 871 $ 507 $ 229 Realized losses (4 ) (2 ) (37 ) Other-than-temporary impairment — — — Securities with a carrying value of approximately $173,146,000 and $168,965,000 at December 31, 2015 and 2014 , respectively, were pledged to secure public deposits, repurchase agreements, and for other purposes as required by law. FHLB letters of credit were used as additional collateral in the amounts of $70,700,000 at December 31, 2015 and $70,000,000 at December 31, 2014 . Temporarily Impaired Securities The following table shows estimated fair value and gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2015 . The reference point for determining when securities are in an unrealized loss position is month-end. Therefore, it is possible that a security's market value exceeded its amortized cost on other days during the past twelve-month period. Available for sale securities that have been in a continuous unrealized loss position are as follows (dollars in thousands): Total Less than 12 Months 12 Months or More Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Federal agencies and GSEs $ 57,711 $ 319 $ 57,711 $ 319 $ — $ — Mortgage-backed and CMOs 37,368 389 35,424 346 1,944 43 State and municipal 13,540 36 12,716 34 824 2 Corporate 5,107 57 3,530 29 1,577 28 Total $ 113,726 $ 801 $ 109,381 $ 728 $ 4,345 $ 73 GSE debt securities: The unrealized losses on the Company's investment in 18 government sponsored entities ("GSE") were caused by interest rate increases. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than the amortized cost bases of the investments. Because the Company does not intend to sell the investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired at December 31, 2015 . GSE residential mortgage-backed securities: The unrealized losses on the Company's investment in 34 GSE mortgage-backed securities were caused by interest rate increases. The contractual cash flows of those investments are guaranteed by an agency of the U.S. Government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost bases of the Company's investments. Because the decline in market value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell the investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired at December 31, 2015 . Collateralized Mortgage Obligations: The unrealized loss associated with one private GSE collateralized mortgage obligation ("CMO") is due to normal market fluctuations. The contractual cash flows of those investments are guaranteed by an agency of the U.S. Government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost bases of the Company's investments. Because the decline in market value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell the investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired at December 31, 2015 . State and municipal securities : The unrealized losses on 17 state and municipal securities were caused by interest rate increases and not credit deterioration. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than the amortized cost bases of the investments. Because the Company does not intend to sell the investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired at December 31, 2015 . Corporate securities : The unrealized losses on six corporate securities were caused by interest rate increases and not credit deterioration. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than the amortized cost bases of the investments. Because the Company does not intend to sell the investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired at December 31, 2015 . Due to restrictions placed upon the Bank's common stock investment in the Federal Reserve Bank and FHLB, these securities have been classified as restricted equity securities and carried at cost. These restricted securities are not subject to the investment security classifications and are included as a separate line item on the Company's Consolidated Balance Sheet. The FHLB requires the Bank to maintain stock in an amount equal to 4.5% of outstanding borrowings and a specific percentage of the Bank's total assets. The Federal Reserve Bank of Richmond requires the Bank to maintain stock with a par value equal to 3.0% of its outstanding capital and an additional 3.0% is on call. Restricted equity securities consist of Federal Reserve Bank stock in the amount of $3,535,000 and $2,742,000 as of December 31, 2015 and 2014 and FHLB stock in the amount of $1,777,000 and $1,625,000 as of December 31, 2015 and 2014 , respectively. The table below shows gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities had been in a continuous unrealized loss position, at December 31, 2014 (dollars in thousands): Total Less than 12 Months 12 Months or More Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Federal agencies and GSEs $ 28,979 $ 104 $ 21,449 $ 35 $ 7,530 $ 69 Mortgage-backed and CMOs 7,182 112 1,171 13 6,011 99 State and municipal 20,542 90 15,836 60 4,706 30 Corporate 5,032 53 2,273 4 2,759 49 Total $ 61,735 $ 359 $ 40,729 $ 112 $ 21,006 $ 247 Other-Than-Temporary-Impaired Securities As of December 31, 2015 and 2014 , there were no securities classified as other-than-temporary impaired.

Loans

Loans	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Loans	Loans Loans, excluding loans held for sale, at December 31, 2015 and 2014 were comprised of the following (dollars in thousands): December 31, 2015 2014 Commercial $ 177,481 $ 126,981 Commercial real estate: Construction and land development 72,968 50,863 Commercial real estate 430,186 391,472 Residential real estate: Residential 220,434 175,293 Home equity 98,449 91,075 Consumer 6,007 5,241 Total loans $ 1,005,525 $ 840,925 Net deferred loan (fees) costs included in the above loan categories are $(575,000) for 2015 and $(435,000) for 2014 . Overdraft deposits were reclassified to consumer loans in the amount of $82,000 and $129,000 for 2015 and 2014 , respectively. Acquired Loans The outstanding principal balance and the carrying amount of these loans included in the consolidated balance sheets at December 31, 2015 and 2014 , are as follows (dollars in thousands): 2015 2014 Outstanding principal balance $ 145,380 $ 84,892 Carrying amount 135,254 78,111 The outstanding principal balance and related carrying amount of acquired impaired loans, for which the Company applies ASC 310-30 to account for interest earned, as of the indicated dates is as follows (dollars in thousands): December 31, 2015 December 31, 2014 Outstanding principal balance $ 40,951 $ 18,357 Carrying amount 33,878 14,933 The following table presents changes in the accretable yield on acquired impaired loans, for which the Company applies ASC 310-30, for the year ended December 31, 2015 (dollars in thousands): 2015 2014 2013 Balance at January 1 $ 1,440 $ 2,046 $ 2,165 Additions from merger with MainStreet 7,140 — — Accretion (4,313 ) (1,185 ) (2,635 ) Reclassification from nonaccretable difference — 579 2,516 Other changes, net 3,032 — — Balance at December 31 $ 7,299 $ 1,440 $ 2,046 Past Due Loans The following table shows an analysis by portfolio segment of the Company's past due loans at December 31, 2015 (dollars in thousands): 30- 59 Days Past Due 60-89 Days Past Due 90 Days + Past Due and Still Accruing Non- Accrual Loans Total Past Due Current Total Loans Commercial $ 137 $ — $ — $ 90 $ 227 $ 177,254 $ 177,481 Commercial real estate: Construction and land development — — — 258 258 72,710 72,968 Commercial real estate 135 182 — 2,497 2,814 427,372 430,186 Residential: Residential 913 398 — 1,731 3,042 217,392 220,434 Home equity 140 12 — 620 772 97,677 98,449 Consumer 53 1 — 9 63 5,944 6,007 Total $ 1,378 $ 593 $ — $ 5,205 $ 7,176 $ 998,349 $ 1,005,525 The following table shows an analysis by portfolio segment of the Company's past due loans at December 31, 2014 (dollars in thousands): 30- 59 Days Past Due 60-89 Days Past Due 90 Days + Past Due and Still Accruing Non- Accrual Loans Total Past Due Current Total Loans Commercial $ 114 $ 165 $ — $ — $ 279 $ 126,702 $ 126,981 Commercial real estate: Construction and land development 44 269 — 279 592 50,271 50,863 Commercial real estate 257 — — 3,010 3,267 388,205 391,472 Residential: Residential 390 325 — 560 1,275 174,018 175,293 Home equity 223 60 — 262 545 90,530 91,075 Consumer 1 42 — 1 44 5,197 5,241 Total $ 1,029 $ 861 $ — $ 4,112 $ 6,002 $ 834,923 $ 840,925 Impaired Loans The following table presents the Company's impaired loan balances by portfolio segment, excluding acquired impaired loans, at December 31, 2015 (dollars in thousands): Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial $ 4 $ 4 $ — $ 47 $ — Commercial real estate: Construction and land development 205 205 — 220 — Commercial real estate 1,202 1,206 — 1,504 1 Residential: Residential 127 124 — 126 — Home equity 173 173 — 305 — Consumer 13 13 — 14 — $ 1,724 $ 1,725 $ — $ 2,216 $ 1 With a related allowance recorded: Commercial $ 91 $ 91 $ — $ 99 $ — Commercial real estate: Construction and land development 448 449 6 563 26 Commercial real estate 390 391 3 353 17 Residential Residential 1,649 1,690 — 1,034 22 Home equity 397 396 25 327 — Consumer 8 9 1 11 — $ 2,983 $ 3,026 $ 35 $ 2,387 $ 65 Total: Commercial $ 95 $ 95 $ — $ 146 $ — Commercial real estate: Construction and land development 653 654 6 783 26 Commercial real estate 1,592 1,597 3 1,857 18 Residential: Residential 1,776 1,814 — 1,160 22 Home equity 570 569 25 632 — Consumer 21 22 1 25 — $ 4,707 $ 4,751 $ 35 $ 4,603 $ 66 The following table presents the Company's impaired loan balances by portfolio segment, excluding acquired impaired loans, at December 31, 2014 (dollars in thousands): Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial $ 7 $ 7 $ — $ 12 $ 1 Commercial real estate: Construction and land development 280 325 — 448 — Commercial real estate 1,520 1,797 — 1,844 — Residential: Residential 603 603 — 723 8 Home equity 256 256 — 316 — Consumer 1 1 — 2 — $ 2,667 $ 2,989 $ — $ 3,345 $ 9 With a related allowance recorded: Commercial $ — $ — $ — $ — $ — Commercial real estate: Construction and land development 576 577 12 593 34 Commercial real estate 1,275 1,422 149 1,297 8 Residential: Residential 4 4 1 4 — Home equity — — — — — Consumer 15 15 3 17 1 $ 1,870 $ 2,018 $ 165 $ 1,911 $ 43 Total: Commercial $ 7 $ 7 $ — $ 12 $ 1 Commercial real estate: Construction and land development 856 902 12 1,041 34 Commercial real estate 2,795 3,219 149 3,141 8 Residential: Residential 607 607 1 727 8 Home equity 256 256 — 316 — Consumer 16 16 3 19 1 $ 4,537 $ 5,007 $ 165 $ 5,256 $ 52 The following table shows the detail of loans modified as TDRs during the year ended December 31, 2015 , 2014 , and 2013 , included in the impaired loan balances (dollars in thousands): Loans Modified as a TDR for the Year Ended December 31, 2015 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial — $ — $ — Commercial real estate 3 394 394 Equity 1 107 105 Residential real estate 4 596 583 Consumer — — — Total 8 $ 1,097 $ 1,082 Loans Modified as a TDR for the Year Ended December 31, 2014 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial — $ — $ — Commercial real estate 2 743 737 Equity 1 8 8 Residential real estate 2 121 124 Consumer — — — Total 5 $ 872 $ 869 Loans Modified as a TDR for the Year Ended December 31, 2013 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial — $ — $ — Commercial real estate 1 1,190 1,190 Equity — — — Residential real estate — — — Consumer — — — Total 1 $ 1,190 $ 1,190 During the years ended December 31, 2015 , 2014 , and 2013 , the Company had no loans that subsequently defaulted within twelve months of modification. The Company defines default as one or more payments that occur more than 90 days past the due date, charge-off or foreclosure subsequent to modification. The following table summarizes the primary reason certain loan modifications were classified as TDRs and includes newly designated TDRs as well as modifications made to existing TDRs. Balances represent the recorded investment at the end of the year in which the modification was made. Rate modifications include TDRs made with below market interest rates that also include modifications of loan structures (dollars in thousands): Year Ended December 31, 2015 2014 2013 Type of Modification ALLL Type of Modification ALLL Type of Modification ALLL Rate Structure Impact Rate Structure Impact Rate Structure Impact Commercial $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate — 394 — — 737 — — 1,190 137 Equity 105 — — — 8 — — — — Residential real estate — 583 — — 124 1 — — — Consumer — — — — — — — — — Total $ 105 $ 977 $ — $ — $ 869 $ 1 $ — $ 1,190 $ 137 As of December 31, 2015 , the Company had $53,000 residential real estate loans in the process of foreclosure. Risk Ratings The following table shows the Company's loan portfolio broken down by internal risk grading as of December 31, 2015 (dollars in thousands): Commercial and Consumer Credit Exposure Credit Risk Profile by Internally Assigned Grade Commercial Construction and Land Development Commercial Real Estate Residential Real Estate Home Equity Pass $ 175,963 $ 68,853 $ 418,719 $ 200,008 $ 96,142 Special Mention 1,364 1,210 5,860 14,638 1,314 Substandard 154 2,905 5,607 5,788 993 Doubtful — — — — — Total $ 177,481 $ 72,968 $ 430,186 $ 220,434 $ 98,449 Consumer Credit Exposure Credit Risk Profile Based on Payment Activity Consumer Performing $ 5,999 Nonperforming 8 Total $ 6,007 Loans classified in the Pass category typically are fundamentally sound and risk factors are reasonable and acceptable. Loans classified in the Special Mention category typically have been criticized internally, by loan review or the loan officer, or by external regulators under the current credit policy regarding risk grades. Loans classified in the Substandard category typically have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt; they are typically characterized by the possibility that the Bank will sustain some loss if the deficiencies are not corrected. Loans classified in the Doubtful category typically have all the weaknesses inherent in loans classified as substandard, plus the added characteristic the weaknesses make collection or liquidation in full on the basis of currently existing facts, conditions, and values highly questionable and improbable. However, these loans are not yet rated as loss because certain events may occur that may salvage the debt. Consumer loans are classified as performing or nonperforming. A loan is nonperforming when payments of interest and principal are past due 90 days or more, or payments are less than 90 days past due, but there are other good reasons to doubt that payment will be made in full. The following table shows the Company's loan portfolio broken down by internal risk grading as of December 31, 2014 (dollars in thousands): Commercial and Consumer Credit Exposure Credit Risk Profile by Internally Assigned Grade Commercial Construction and Land Development Commercial Real Estate Residential Real Estate Home Equity Pass $ 125,405 $ 45,534 $ 382,604 $ 165,367 $ 88,646 Special Mention 1,569 569 4,889 6,709 1,801 Substandard 7 4,760 3,979 3,217 628 Doubtful — — — — — Total $ 126,981 $ 50,863 $ 391,472 $ 175,293 $ 91,075 Consumer Credit Exposure Credit Risk Profile Based on Payment Activity Consumer Performing $ 5,240 Nonperforming 1 Total $ 5,241

Allowance for Loan Losses and R

Allowance for Loan Losses and Reserve for Unfunded Lending Commitments	12 Months Ended
	Dec. 31, 2015
Provision for Loan and Lease Losses [Abstract]
Allowance for Loan Losses and Reserve for Unfunded Lending Commitments	Allowance for Loan Losses and Reserve for Unfunded Lending Commitments Changes in the allowance for loan losses and the reserve for unfunded lending commitments for each of the years in the three-year period ended December 31, 2015 , are presented below (dollars in thousands): Years Ended December 31, 2015 2014 2013 Allowance for Loan Losses Balance, beginning of year $ 12,427 $ 12,600 $ 12,118 Provision for loan losses 950 400 294 Charge-offs (1,200 ) (964 ) (837 ) Recoveries 424 391 1,025 Balance, end of year $ 12,601 $ 12,427 $ 12,600 Years Ended December 31, 2015 2014 2013 Reserve for Unfunded Lending Commitments Balance, beginning of year $ 163 $ 210 $ 201 Provision for (recovery) unfunded commitments 21 (47 ) 9 Charge-offs (recovery of) — — — Balance, end of year $ 184 $ 163 $ 210 The reserve for unfunded loan commitments is included in other liabilities. The following table presents the Company's allowance for loan losses by portfolio segment and the related loan balance total by segment for the year ended December 31, 2015 (dollars in thousands): Commercial Commercial Real Estate Residential Real Estate Consumer Unallocated Total Allowance for Loan Losses Balance at December 31, 2014 $ 1,818 $ 6,814 $ 3,715 $ 80 $ — $ 12,427 Charge-offs (175 ) (482 ) (323 ) (220 ) — (1,200 ) Recoveries 32 124 139 129 — 424 Provision 390 474 15 71 — 950 Balance at December 31, 2015 $ 2,065 $ 6,930 $ 3,546 $ 60 $ — $ 12,601 Balance at December 31, 2015: Allowance for Loan Losses Individually evaluated for impairment $ — $ 9 $ 26 $ — $ — $ 35 Collectively evaluated for impairment 2,065 6,750 3,284 60 — 12,159 Acquired impaired loans — 171 236 — — 407 Total $ 2,065 $ 6,930 $ 3,546 $ 60 $ — $ 12,601 Loans Individually evaluated for impairment $ 95 $ 2,245 $ 2,346 $ 21 $ — $ 4,707 Collectively evaluated for impairment 176,798 487,177 297,281 5,684 — 966,940 Acquired impaired loans 588 13,732 19,256 302 — 33,878 Total $ 177,481 $ 503,154 $ 318,883 $ 6,007 $ — $ 1,005,525 The following table presents the Company's allowance for loan losses by portfolio segment and the related loan balance total by segment for the year ended December 31, 2014 (dollars in thousands): Commercial Commercial Real Estate Residential Real Estate Consumer Unallocated Total Allowance for Loan Losses Balance at December 31, 2013 $ 1,810 $ 6,819 $ 3,690 $ 99 $ 182 $ 12,600 Charge-offs (101 ) (510 ) (258 ) (95 ) — (964 ) Recoveries 51 66 191 83 — 391 Provision 58 439 92 (7 ) (182 ) 400 Balance at December 31, 2014 $ 1,818 $ 6,814 $ 3,715 $ 80 $ — $ 12,427 Balance at December 31, 2014: Allowance for Loan Losses Individually evaluated for impairment $ — $ 161 $ 1 $ 3 $ — $ 165 Collectively evaluated for impairment 1,815 6,400 3,424 77 — 11,716 Acquired impaired loans 3 253 290 — — 546 Total $ 1,818 $ 6,814 $ 3,715 $ 80 $ — $ 12,427 Loans Individually evaluated for impairment $ 7 $ 3,651 $ 863 $ 16 $ — $ 4,537 Collectively evaluated for impairment 126,774 429,660 259,796 5,225 — 821,455 Acquired impaired loans 200 9,024 5,709 — — 14,933 Total $ 126,981 $ 442,335 $ 266,368 $ 5,241 $ — $ 840,925 The allowance for loan losses is allocated to loan segments based upon historical loss factors, risk grades on individual loans, portfolio analysis of smaller balance, homogenous loans, and qualitative factors. Qualitative factors include trends in delinquencies, nonaccrual loans, and loss rates; trends in volume and terms of loans, effects of changes in risk selection, underwriting standards, and lending policies; experience of lending officers, other lending staff and loan review; national, regional, and local economic trends and conditions; legal, regulatory and collateral factors; and concentrations of credit.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment Major classifications of premises and equipment at December 31, 2015 and 2014 are summarized as follows (dollars in thousands): December 31, 2015 2014 Land $ 6,077 $ 5,794 Buildings 23,481 22,963 Leasehold improvements 1,399 1,418 Furniture and equipment 18,686 18,722 49,643 48,897 Accumulated depreciation (26,076 ) (25,872 ) Premises and equipment, net $ 23,567 $ 23,025 Depreciation expense for the years ended December 31, 2015 , 2014 , and 2013 was $1,833,000 , $1,688,000 , and $1,734,000 , respectively. The Company has entered into operating leases for several of its branch and ATM facilities. The minimum annual rental payments under these leases at December 31, 2015 are as follows (dollars in thousands): Minimum Lease Year Payments 2016 $ 882 2017 810 2018 624 2019 108 2020 30 $ 2,454 Lease expense, a component of occupancy and equipment expense, for the years ended December 31, 2015 , 2014 , and 2013 was $990,000 , $633,000 , and $629,000 , respectively.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The Company records as goodwill the excess of purchase price over the fair value of the identifiable net assets acquired. Impairment testing is performed annually, as well as when an event triggering impairment may have occurred. The Company performs its annual analysis as of June 30 each fiscal year. Accounting guidance permits preliminary assessment of qualitative factors to determine whether more substantial impairment testing is required. The Company chose to bypass the preliminary assessment and utilized a two-step process for impairment testing of goodwill. The first step tests for impairment, while the second step, if necessary, measures the impairment. No indicators of impairment were identified during the years ended December 31, 2015 , 2014 , and 2013 . Core deposit intangibles resulting from the Community First acquisition in April 2006 were $3,112,000 and were amortized over 99 months ending in 2015. Core deposit intangibles resulting from the MidCarolina acquisition in July 2011 were $6,556,000 and are being amortized on an accelerated basis over 108 months . Core deposit intangibles resulting from the MainStreet acquisition were $1,839,000 and are being amortized on an accelerated basis over 120 months . The changes in the carrying amount of goodwill and intangibles for the twelve months ended December 31, 2015 , are as follows (dollars in thousands): Goodwill Intangibles Balance at December 31, 2014 $ 39,043 $ 2,045 Additions 4,829 1,839 Amortization — (1,201 ) Impairment — — Balance at December 31, 2015 $ 43,872 $ 2,683 Goodwill and intangible assets at December 31, 2015 and 2014 are as follow (dollars in thousands): Gross Carrying Value Accumulated Amortization Net Carrying Value December 31, 2015 Core deposit intangibles $ 11,808 $ (9,125 ) $ 2,683 Goodwill 43,872 — 43,872 December 31, 2014 Core deposit intangibles $ 9,969 $ (7,924 ) $ 2,045 Goodwill 39,043 — 39,043 Amortization expense of core deposit intangibles for the years ended December 31, 2015 , 2014 , and 2013 were $1,201,000 , $1,114,000 , and $1,501,000 , respectively. As of December 31, 2015 , the estimated future amortization expense of core deposit intangibles is as follows (dollars in thousands): Year Amount 2016 $ 964 2017 528 2018 265 2019 219 2020 207 2021 and after 500 Total $ 2,683

Deposits

Deposits	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Deposits	Deposits The aggregate amount of time deposits in denominations of $250,000 or more at December 31, 2015 and 2014 was $132,686,000 and $119,225,000 , respectively. At December 31, 2015 , the scheduled maturities of certificates of deposits (included in "time" deposits on the Consolidated Balance Sheet) were as follows (dollars in thousands): Year Amount 2016 $ 216,638 2017 78,863 2018 45,279 2019 24,945 2020 31,581 2021 and after 4 Total $ 397,310 There were no brokered time deposits at December 31, 2015 or December 31, 2014 . Time deposits through the Certificate of Deposit Account Registry Service ("CDARs") program totaled $23,633,000 at December 31, 2015 compared to $22,255,000 at December 31, 2014 . Deposits through the CDARs program are generated from major customers with substantial relationships to the Bank.

Short-term Borrowings

Short-term Borrowings	12 Months Ended
	Dec. 31, 2015
Short-term Debt [Abstract]
Short-term Borrowings	Short-term Borrowings Short-term borrowings consist of customer repurchase agreements, overnight borrowings from the FHLB, and Federal Funds purchased. The Company has federal funds lines of credit established with two correspondent banks in the amounts of $15,000,000 each, and, additionally, has access to the Federal Reserve Bank of Richmond's discount window. Customer repurchase agreements are collateralized by securities of the U.S. Government, its agencies or GSEs. They mature daily. The interest rates are generally fixed but may be changed at the discretion of the Company. The securities underlying these agreements remain under the Company's control. FHLB overnight borrowings contain floating interest rates that may change daily at the discretion of the FHLB. Federal Funds purchased are unsecured overnight borrowings from other financial institutions. Short-term borrowings consisted solely of customer repurchase agreements at December 31, 2015 and 2014 (dollars in thousands): December 31, 2015 December 31, 2014 Amount Weighted Average Rate Amount Weighted Average Rate Customer repurchase agreements $ 40,611 0.02 % $ 53,480 0.02 %

Long-term Borrowings

Long-term Borrowings	12 Months Ended
	Dec. 31, 2015
Long-term Debt, Unclassified [Abstract]
Long-term Borrowings	Long-term Borrowings Under the terms of its collateral agreement with the FHLB, the Company provides a blanket lien covering all of its residential first mortgage loans, second mortgage loans, home equity lines of credit, and commercial real estate loans. In addition, the Company pledges as collateral its capital stock in the FHLB and deposits with the FHLB. The Company has a line of credit with the FHLB equal to 30% of the Company's assets, subject to the amount of collateral pledged. As of December 31, 2015 , $424,053,000 in eligible collateral was pledged under the blanket floating lien agreement which covers both short-term and long-term borrowings. Long-term borrowings consisted of the following fixed rate, advances as of December 31, 2015 and 2014 (dollars in thousands): 2015 2014 Due by Advance Amount Weighted Average Rate Due by Advance Amount Weighted Average Rate November 30, 2017 $ 9,958 2.98 % November 30, 2017 $ 9,935 2.98 % The advance due in November 2017 is net of a fair value discount of $42,000 . The original discount recorded on July 1, 2011 was a result of the merger with MidCarolina. The adjustment to the face value will be amortized into interest expense over the life of the borrowing. In the regular course of conducting its business, the Company takes deposits from political subdivisions of the states of Virginia and North Carolina. At December 31, 2015 , the Bank's public deposits totaled $149,449,000 . The Company is required to provide collateral to secure the deposits that exceed the insurance coverage provided by the Federal Deposit Insurance Corporation. This collateral can be provided in the form of certain types of government or agency bonds or letters of credit from the FHLB. At December 31, 2015 , the Company had $70,700,000 in letters of credit with the FHLB outstanding as well as $122,384,000 in agency, state, and municipal securities to provide collateral for such deposits.

Junior Subordinated Debt

Junior Subordinated Debt	12 Months Ended
	Dec. 31, 2015
Trust Preferred Capital Notes [Abstract]
Junior Subordinated Debt	Junior Subordinated Debt On April 7, 2006, AMNB Statutory Trust I, a Delaware statutory trust and a wholly owned subsidiary of the Company, issued $20,000,000 of preferred securities in a private placement pursuant to an applicable exemption from registration. The Trust Preferred Securities mature on June 30, 2036 , but may be redeemed at the Company's option beginning on September 30, 2011. Initially, the securities required quarterly distributions by the trust to the holder of the Trust Preferred Securities at a fixed rate of 6.66% . Effective September 30, 2011, the rate resets quarterly at the three-month LIBOR plus 1.35% . Distributions are cumulative and will accrue from the date of original issuance, but may be deferred by the Company from time to time for up to 20 consecutive quarterly periods. The Company has guaranteed the payment of all required distributions on the Trust Preferred Securities. The proceeds of the Trust Preferred Securities received by the trust, along with proceeds of $619,000 received by the trust from the issuance of common securities by the trust to the Company, were used to purchase $20,619,000 of the Company's junior subordinated debt securities (the "Trust Preferred Capital Notes"), issued pursuant to a junior subordinated debentures entered into between the Company and Wilmington Trust Company, as trustee. The proceeds of the Trust Preferred Capital Notes were used to fund the cash portion of the merger consideration to the former shareholders of Community First in connection with the Company's acquisition of that company, and for general corporate purposes. On July 1, 2011, in connection with the MidCarolina merger, the Company assumed $8,764,000 in junior subordinated debentures to the MidCarolina Trusts, to fully and unconditionally guarantee the preferred securities issued by the MidCarolina Trusts. These long-term obligations, which currently qualify as Tier 1 capital, constitute a full and unconditional guarantee by the Company of the MidCarolina Trusts' obligations. The MidCarolina Trusts are not consolidated in the Company's financial statements. In accordance with ASC 810-10-15-14, "Consolidation – Overall - Scope and Scope Exceptions," the Company did not eliminate through consolidation the Company's $619,000 equity investment in AMNB Statutory Trust I or the $264,000 equity investment in the MidCarolina Trusts. Instead, the Company reflected this equity investment in the "Accrued interest receivable and other assets" line item in the consolidated balance sheets. A description of the junior subordinated debt securities outstanding payable to the trusts is shown below (dollars in thousands): Principal Amount December 31, Issuing Entity Date Issued Interest Rate Maturity Date 2015 2014 AMNB Trust I 4/7/2006 Libor plus 1.35% 6/30/2036 $ 20,619 $ 20,619 MidCarolina Trust I 10/29/2002 Libor plus 3.45% 11/7/2032 4,209 4,154 MidCarolina Trust II 12/3/2003 Libor plus 3.45% 10/7/2033 2,794 2,748 $ 27,622 $ 27,521 The principal amounts reflected for the MidCarolina Trusts are net of fair value marks of $946,000 and $815,000 respectively. The original fair value marks of $1,197,000 and $1,021,000 were recorded as a result of the merger with MidCarolina on July 1, 2011 and are being amortized into interest expense over the remaining lives of the respective borrowings.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company's 2008 Stock Incentive Plan ("2008 Plan") was adopted by the Board of Directors of the Company on February 19, 2008 and approved by shareholders on April 22, 2008 at the Company's 2008 Annual Meeting of Shareholders. The 2008 Plan provides for the granting of restricted stock awards, incentive and non-statutory options to employees and directors on a periodic basis, at the discretion of the Board of Directors or a Board designated committee. The 2008 Plan authorizes the issuance of up to 500,000 shares of common stock. The 2008 Plan replaced the Company's stock option plan that was approved by the shareholders at the 1997 Annual Meeting, which plan terminated in 2006. Stock Options Accounting guidance requires that compensation cost relating to share-based payment transactions be recognized in the financial statements with measurement based upon the fair value of the equity or liability instruments issued. A summary of stock option transactions for the year ended December 31, 2015 is as follows: Option Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value ($000) Outstanding at December 31, 2014 110,947 $ 26.08 Replacement stock options 43,086 20.02 Granted — — Exercised 42,680 18.49 Forfeited 4,090 19.03 Expired 39,392 31.18 Outstanding at December 31, 2015 67,871 $ 24.47 2.61 years $ 118 Exercisable at December 31, 2015 67,871 $ 24.47 2.61 years $ 118 The aggregate intrinsic value of stock options in the table above represents the total pre-tax intrinsic value (the amount by which the current fair value of the underlying stock exceeds the exercise price of the option) that would have been received by the option holders had all option holders exercised their options on December 31, 2015 . This amount changes based on changes in the fair value of the Company's common stock. The total proceeds of the in-the-money options exercised during the year ended December 31, 2015 , 2014 , and 2013 were $789,000 , $442,000 , and $309,000 , respectively. Total intrinsic value of options exercised during years ended December 31, 2015 , 2014 , and 2013 was $220,000 , $178,000 , and $75,000 , respectively. As of December 31, 2015 , 2014 , and 2013 , there was no recognized or unrecognized compensation expense attributable to the outstanding stock options. The following table summarizes information related to stock options outstanding on December 31, 2015 : Options Outstanding and Exercisable Range of Exercise Prices Number of Outstanding Options Weighted- Average Remaining Contractual Life Weighted- Average Exercise Price $20.01 to $25.00 37,300 2.89 years $ 22.45 $25.01 to $30.00 27,601 2.34 25.84 $30.01 to $41.67 2,970 1.70 37.04 67,871 2.61 years $ 24.47 No stock options were granted in 2015 , 2014 and 2013 . Restricted Stock The Company from time-to-time grants shares of restricted stock to key employees and non-employee directors. These awards help align the interests of these employees and directors with the interests of the shareholders of the Company by providing economic value directly related to increases in the value of the Company's common stock. The value of the stock awarded is established as the fair market value of the stock at the time of the grant. The Company recognizes expense, equal to the total value of such awards, ratably over the vesting period of the stock grants. Restricted stock granted in 2015 cliff vests at the end of a 36 -month period beginning on the date of grant. Nonvested restricted stock activity for the year ended December 31, 2015 is summarized in the following table: Restricted Stock Shares Weighted Average Grant Date Value Nonvested at January 1, 2015 41,562 $ 21.39 Granted 19,155 $ 21.81 Vested 15,536 $ 19.51 Forfeited 3,618 $ 22.89 Nonvested at December 31, 2015 41,563 $ 22.15 As of December 31, 2015 , 2014 , and 2013 , there was $340,000 , $327,000 , and $337,000 , respectively, in unrecognized compensation cost related to nonvested restricted stock granted under the 2008 Plan. This cost is expected to be recognized over the next 12 to 30 months . The share based compensation expense for nonvested restricted stock was $322,000 , $342,000 , and $292,000 during 2015 , 2014 , and 2013 respectively. Starting in 2010, the Company began offering its outside directors alternatives with respect to director compensation. For 2015 , the monthly board retainer could be received in the form of either (a) $1,000 in cash or (b) shares of immediately vested, but restricted stock, with a market value of $1,563 . Monthly meeting fees can also be received as $600 per meeting in cash or $750 in immediately vested, but restricted stock. For 2015 , all 13 outside directors elected to receive stock in lieu of cash for their monthly retainer board meeting fees. Only outside directors receive board fees. The Company issued 11,228 , 13,147 and 12,711 shares and recognized share based compensation expense of $275,000 , $298,000 , and $282,000 during 2015 , 2014 and 2013 , respectively. During 2015 , 4,158 shares with a market value of $95,000 were issued to a retired director as payment for cumulative deferred director compensation.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company files income tax returns in the U.S. federal jurisdiction and the states of Virginia and North Carolina. With few exceptions, the Company is no longer subject to U.S. federal, state, and local income tax examinations by tax authorities for years prior to 2012. The components of the Company's net deferred tax assets (liabilities) were as follows (dollars in thousands): December 31, 2015 2014 Deferred tax assets: Allowance for loan losses $ 4,410 $ 4,350 Nonaccrual loan interest 576 449 Other real estate owned valuation allowance 360 1,384 Deferred compensation 1,353 641 Loans (1) 4,641 3,953 Other 840 725 Total deferred tax assets 12,180 11,502 Deferred tax liabilities: Depreciation 700 759 Accretion of discounts on securities 320 274 Core deposit intangibles 939 716 Net unrealized gains on securities 2,219 3,148 Prepaid pension expense 52 83 Trust preferred fair value adjustment 616 652 Other 196 208 Total deferred tax liabilities 5,042 5,840 Net deferred tax assets $ 7,138 $ 5,662 (1) Fair value adjustments related to acquisition $6,376,000 . The provision for income taxes consists of the following (dollars in thousands): Years Ended December 31, 2015 2014 2013 Current tax expense $ 4,279 $ 5,153 $ 4,030 Deferred tax expense 1,741 49 2,024 Total income tax expense $ 6,020 $ 5,202 $ 6,054 A reconcilement of the "expected" Federal income tax expense to reported income tax expense is as follows (dollars in thousands): Years Ended December 31, 2015 2014 2013 Expected federal tax expense $ 7,371 $ 6,280 $ 7,630 Nondeductible interest expense 78 63 77 Tax-exempt interest (1,338 ) (1,370 ) (1,491 ) State income taxes 222 405 254 Other, net (313 ) (176 ) (416 ) Total income tax expense $ 6,020 $ 5,202 $ 6,054

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The following shows the weighted average number of shares used in computing earnings per common share and the effect on weighted average number of shares of potentially dilutive common stock. Potentially dilutive common stock had no effect on income available to common shareholders. Years Ended December 31, 2015 2014 2013 Shares Per Share Amount Shares Per Share Amount Shares Per Share Amount Basic earnings per share 8,680,502 $ 1.73 7,867,198 $ 1.62 7,872,870 $ 2.00 Effect of dilutive securities - stock options 7,948 — 10,378 — 11,691 — Diluted earnings per share 8,688,450 $ 1.73 7,877,576 $ 1.62 7,884,561 $ 2.00 Outstanding stock options on common stock which were not included in computing diluted earnings per share in 2015 , 2014 , and 2013 because their effects were anti-dilutive, averaged 66,238 shares, 117,843 shares, and 161,831 shares, respectively.

Off-Balance Sheet Activities

Off-Balance Sheet Activities	12 Months Ended
	Dec. 31, 2015
Off Balance Sheet Activities [Abstract]
Off-Balance Sheet Activities	Off-Balance Sheet Activities 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 Balance Sheets. The Company evaluates each customer's credit worthiness on a case-by-case basis. The amount of collateral obtained, if applicable, is based on management's credit evaluation of the customer. 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. The following off-balance sheet financial instruments whose contract amounts represent credit risk were outstanding at December 31, 2015 and 2014 (dollars in thousands): December 31, 2015 2014 Commitments to extend credit $ 301,360 $ 190,413 Standby letters of credit 4,286 3,333 Mortgage loan rate lock commitments 5,365 3,372 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. These commitments generally consist of unused portions of lines of credit issued to customers. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since some of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those letters of credit are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. At December 31, 2015 , the Company had locked-rate commitments to originate mortgage loans amounting to approximately $5,365,000 and loans held for sale of $3,266,000 . Risks arise from the possible inability of counterparties to meet the terms of their contracts, though the Company has never experienced a failure of one of its counterparties to perform. If a loan becomes past due 90 days within 180 days of sale, the Company would be required to repurchase the loan.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In the ordinary course of business, loans are granted to executive officers, directors, and their related entities. Management believes that all such loans are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable loans to similar, unrelated borrowers, and do not involve more than a normal risk of collectibility or present other unfavorable features. As of December 31, 2015 and 2014 , none of these loans were restructured, past due, or on nonaccrual status. An analysis of these loans for 2015 is as follows (dollars in thousands): Balance at December 31, 2014 $ 15,532 Additions 5,366 Repayments (4,560 ) Balance at December 31, 2015 $ 16,338 Related party deposits totaled $17,163,000 at December 31, 2015 and $22,088,000 at December 31, 2014 .

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Employee Benefit Plans	Employee Benefit Plans Defined Benefit Plan The Company previously maintained a non-contributory defined benefit pension plan which covered substantially all employees who were 21 years of age or older and who had at least one year of service. The Company froze its pension plan to new participants and converted its pension plan to a cash balance plan effective December 31, 2009. Each year existing participants will receive, with some adjustments, income based on the yield of the 10 year U.S. Treasury Note in December of the preceding year. Information pertaining to the activity in the plan is as follows (dollars in thousands): As of and for the Years Ended December 31, 2015 2014 2013 Change in Benefit Obligation: Projected benefit obligation at beginning of year $ 10,710 $ 8,996 $ 10,931 Service cost — — — Interest cost 297 304 288 Actuarial (gain) loss (100 ) 1,606 (201 ) Benefits paid (2,454 ) (196 ) (2,022 ) Projected benefit obligation at end of year 8,453 10,710 8,996 Change in Plan Assets: Fair value of plan assets at beginning of year 10,949 10,870 11,689 Actual return on plan assets (67 ) 275 1,203 Benefits paid (2,454 ) (196 ) (2,022 ) Fair value of plan assets at end of year 8,428 10,949 10,870 Funded Status at End of Year $ (25 ) $ 239 $ 1,874 Amounts Recognized in the Consolidated Balance Sheets Other assets (liabilities) $ (25 ) $ 239 $ 1,874 Amounts Recognized in Accumulated Other Comprehensive Loss Net actuarial loss $ 2,818 $ 3,356 $ 1,628 Deferred income tax asset (986 ) (1,175 ) (570 ) Amount recognized $ 1,832 $ 2,181 $ 1,058 As of and for the Years Ended December 31, 2015 2014 2013 Components of Net Periodic Benefit Cost Service cost $ — $ — $ — Interest cost 297 304 288 Expected return on plan assets (459 ) (469 ) (513 ) Recognized net loss due to settlement 671 — 594 Recognized net actuarial loss 293 73 275 Net periodic benefit cost $ 802 $ (92 ) $ 644 Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss Net actuarial (gain) loss $ (538 ) $ 1,728 $ (1,761 ) Amortization of prior service cost — — — Total recognized in other comprehensive (income) loss $ (538 ) $ 1,728 $ (1,761 ) Total Recognized in Net Periodic Benefit Cost and Other Comprehensive (Income) Loss $ 264 $ 1,636 $ (1,117 ) The accumulated benefit obligation as of December 31, 2015 , 2014 , and 2013 was $8,453,000 , $10,710,000 , and $8,996,000 , respectively. The rate of compensation increase is no longer applicable since the defined benefit plan was converted to a cash balance plan. The plan sponsor selected the expected long-term rate-of-return-on-assets assumption in consultation with their investment advisors and actuary. This rate was intended to reflect the average rate of earnings expected to be earned on the funds invested or to be invested to provide plan benefits. Historical performance is reviewed, especially with respect to real rates of return (net of inflation), for the major asset classes held or anticipated to be held by the trust, and for the trust itself. Undue weight is not given to recent experience that may not continue over the measurement period, with higher significance placed on current forecasts of future long-term economic conditions. Because assets are held in a qualified trust, anticipated returns are not reduced for taxes. Further, solely for this purpose, the plan is assumed to continue in force and not terminate during the period in which assets are invested. However, consideration is given to the potential impact of current and future investment policy, cash flow into and out of the trust, and expenses (both investment and non-investment) typically paid from plan assets (to the extent such expenses are not explicitly estimated within periodic cost). Below is a description of the plan's assets. The plan's weighted-average asset allocations by asset category are as follows as of December 31, 2015 and 2014 : Asset Category December 31, 2015 2014 Fixed Income 59.5 % 47.6 % Equity 32.0 % 25.2 % Cash and Accrued Income 8.5 % 27.2 % Total 100.0 % 100.0 % The investment policy and strategy for plan assets can best be described as a growth and income strategy. Diversification is accomplished by limiting the holding of any one equity issuer to no more than 5% of total equities. Exchange traded funds are used to provide diversified exposure to the small capitalization and international equity markets. All fixed income investments are rated as investment grade, with the majority of these assets invested in corporate issues. The assets are managed by the Company's Trust and Investment Services Division. No derivatives are used to manage the assets. Equity securities do not include holdings in the Company. The fair value of the Company's pension plan assets at December 31, 2015 and 2014 , by asset category are as follows (dollars in thousands): Fair Value Measurements at December 31, 2015 using Balance at December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Asset Category 2015 Level 1 Level 2 Level 3 Cash $ 675 $ 675 $ — $ — Fixed income securities Government sponsored entities 2,287 — 2,287 — Municipal bonds and notes 1,084 — 1,084 — Corporate bonds and notes 1,641 — 1,641 — Equity securities U.S. companies 2,481 2,481 — — Foreign companies 260 260 — — $ 8,428 $ 3,416 $ 5,012 $ — Fair Value Measurements at December 31, 2014 using Balance at December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Asset Category 2014 Level 1 Level 2 Level 3 Cash $ 2,979 $ 2,979 $ — $ — Fixed income securities Government sponsored entities 2,824 — 2,824 — Municipal bonds and notes 172 — 172 — Corporate bonds and notes 2,216 — 2,216 — Equity securities U.S. companies 2,384 2,384 — — Foreign companies 374 374 — — $ 10,949 $ 5,737 $ 5,212 $ — Projected benefit payments for the years 2016 to 2025 are as follows (dollars in thousands): Year Amount 2016 $ 1,400 2017 340 2018 547 2019 1,014 2020 453 2021-2025 3,876 401(k) Plan The Company maintains a 401(k) plan that covers substantially all full-time employees of the Company. The Company matches a portion of the contribution made by employee participants after at least one year of service. The Company contributed $ 602,000 , $ 521,000 , and $542,000 to the 401(k) plan in 2015 , 2014 , and 2013 , respectively. These amounts are included in employee benefits expense for the respective years. Deferred Compensation Arrangements The Company maintains deferred compensation agreements with certain current and former employees providing for annual payments to each ranging from $25,000 to $50,000 per year for ten years upon their retirement. The liabilities under these agreements are being accrued over the officers' remaining periods of employment so that, on the date of their retirement, the then-present value of the annual payments would have been accrued. The liabilities were $442,000 and $509,000 at December 31, 2015 and 2014, respectively. The expense for these agreements was $ 8,000 , $ 10,000 , and $ 13,000 for the years 2015 , 2014 , and 2013 , respectively. Profit Sharing and Incentive Arrangements The Company maintains a cash profit sharing plan for full-time employees based on the Company's performance and a cash incentive compensation plan for officers based on the Company's performance and individual officer goals. The total amount charged to salary expense for these plans was $559,000 , $ 851,000 , and $ 890,000 for the years 2015 , 2014 , and 2013 , respectively.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Determination of Fair Value The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In accordance with the fair value measurements and disclosures topic of FASB ASC, the fair value of a financial instrument is 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 measurement date. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company's various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. The fair value guidance provides a consistent definition of fair value, which focuses on exit price in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. If there has been a significant decrease in the volume and level of activity for the asset or liability, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under current market conditions depends on the facts and circumstances and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under current market conditions. Fair Value Hierarchy In accordance with this guidance, the Company groups its financial assets and financial liabilities generally measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. Level 1 – Valuation is based on quoted prices in active markets for identical assets and liabilities. Level 2 – Valuation is based on observable inputs including quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets and liabilities in less active markets, and model-based valuation techniques for which significant assumptions can be derived primarily from or corroborated by observable data in the market. Level 3 – Valuation is based on model-based techniques that use one or more significant inputs or assumptions that are unobservable in the market. The following describes the valuation techniques used by the Company to measure certain financial assets and liabilities recorded at fair value on a recurring basis in the financial statements: Securities available for sale : Securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted market prices, when available (Level 1). If quoted market prices are not available, fair values are measured utilizing independent valuation techniques of identical or similar securities for which significant assumptions are derived primarily from or corroborated by observable market data. Third party vendors compile prices from various sources and may determine the fair value of identical or similar securities by using pricing models that consider observable market data (Level 2). In mid-2013, the Company purchased $1,000,000 in convertible preferred stock from a Virginia based, publicly traded community bank. There is no secondary market for this bank's preferred stock; however, its common stock is traded on a limited basis in the over the counter market. The Company uses an independent third party to assist in the valuation of these securities. Given the convertible nature of the securities, the common stock of the issuing community bank is used as a proxy for the preferred stock value. This is the only security recorded with a Level 3 valuation at December 31, 2015 . The following table presents the balances of financial assets measured at fair value on a recurring basis during the period (dollars in thousands): Fair Value Measurements at December 31, 2015 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2015 Level 1 Level 2 Level 3 Assets: Securities available for sale: Federal agencies and GSEs $ 81,452 $ — $ 81,452 $ — Mortgage-backed and CMOs 70,930 — 70,930 — State and municipal 175,891 — 175,891 — Corporate 10,590 — 10,590 — Equity securities 1,486 — — 1,486 Total $ 340,349 $ — $ 338,863 $ 1,486 Fair Value Measurements at December 31, 2014 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2014 Level 1 Level 2 Level 3 Assets: Securities available for sale: Federal agencies and GSEs $ 82,106 $ 2,995 $ 79,111 $ — Mortgage-backed and CMOs 57,425 — 57,425 — State and municipal 195,493 1,172 194,321 — Corporate 8,379 — 8,379 — Equity Securities 1,313 — — 1,313 Total $ 344,716 $ 4,167 $ 339,236 $ 1,313 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Balances as of January 1, 2015 Total Realized / Unrealized Gains (Losses) Included in Purchases, Sales, Issuances and Settlements, Net Transfer In (Out) of Level 3 Balances as of December 31, 2015 Net Income Other Comprehensive Income Securities available for sale: Equity $ 1,313 $ — $ 173 $ — $ — $ 1,486 Total assets $ 1,313 $ — $ 173 $ — $ — $ 1,486 Certain assets are measured at fair value on a nonrecurring basis in accordance with GAAP. Adjustments to the fair value of these assets usually result from the application of lower-of-cost-or-market accounting or write-downs of individual assets. The following describes the valuation techniques used by the Company to measure certain assets recorded at fair value on a nonrecurring basis in the financial statements: Loans held for sale : Loans held for sale are carried at fair value. These loans currently consist of one-to-four family residential loans originated for sale in the secondary market. Fair value is based on the price secondary markets are currently offering for similar loans using observable market data which is not materially different than cost due to the short duration between origination and sale (Level 2). As such, the Company records any fair value adjustments on a nonrecurring basis. No nonrecurring fair value adjustments were recorded on loans held for sale during the years ended December 31, 2015 and 2014 . Gains and losses on the sale of loans are recorded within income from mortgage banking on the Consolidated Statements of Income. Impaired loans : Loans are designated as impaired when, in the judgment of management based on current information and events, it is probable that all amounts due according to the contractual terms of the loan agreements will not be collected when due. The measurement of loss associated with impaired loans can be based on either the observable market price of the loan or the fair value of the collateral. Collateral may be in the form of real estate or business assets including equipment, inventory, and accounts receivable. The vast majority of the Company's collateral is real estate. The value of real estate collateral is determined utilizing a market valuation approach based on an appraisal, of one year or less, conducted by an independent, licensed appraiser using observable market data (Level 2). However, if the collateral is a house or building in the process of construction or if an appraisal of the property is more than one year old and not solely based on observable market comparable or management determines the fair value of the collateral is further impaired below the appraised value, then a Level 3 valuation is considered to measure the fair value. The value of business equipment is based upon an outside appraisal, of one year or less, if deemed significant, or the net book value on the applicable business's financial statements if not considered significant using observable market data. Likewise, values for inventory and accounts receivables collateral are based on financial statement balances or aging reports (Level 3). Impaired loans allocated to the allowance for loan losses are measured at fair value on a nonrecurring basis. Any fair value adjustments are recorded in the period incurred as provision for loan losses on the Consolidated Statements of Income. Other real estate owned : Measurement for fair values for other real estate owned are the same as impaired loans. Any fair value adjustments are recorded in the period incurred as a valuation allowance against other real estate owned with the associated expense included in other real estate owned expense, net on the Consolidated Statements of Income. The following table summarizes the Company's assets that were measured at fair value on a nonrecurring basis during the period (dollars in thousands): Fair Value Measurements at December 31, 2015 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2015 Level 1 Level 2 Level 3 Assets: Loans held for sale $ 3,266 $ — $ 3,266 $ — Impaired loans, net of valuation allowance 2,948 — — 2,948 Other real estate owned, net 2,184 — — 2,184 Fair Value Measurements at December 31, 2014 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2014 Level 1 Level 2 Level 3 Assets: Loans held for sale $ 616 $ — $ 616 $ — Impaired loans, net of valuation allowance 1,705 — — 1,705 Other real estate owned, net 2,119 — — 2,119 Quantitative Information About Level 3 Fair Value Measurements as of December 31, 2015 : Assets Valuation Technique Unobservable Input Weighted Rate Securities available for sale Third party model based techniques Stock price in different rate environments 49 % Impaired loans Discounted appraised value Selling cost 6 % Impaired loans Discounted cash flow analysis Market rate for borrower (discount rate) 4 % Other real estate owned Discounted appraised value Selling cost 6 % Quantitative Information About Level 3 Fair Value Measurements as of December 31, 2014 : Assets Valuation Technique Unobservable Input Weighted Rate Securities available for sale Third party model based techniques Stock price in different rate environments 31 % Impaired loans Discounted appraised value Selling cost 6 % Other real estate owned Discounted appraised value Selling cost 4 % Other real estate owned Discounted appraised value Discount for lack of marketability and age of appraisal 6 % ASC 825, "Financial Instruments," requires disclosure about fair value of financial instruments for interim periods and excludes certain financial instruments and all non-financial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. The carrying values and estimated fair values of the Company's financial instruments as of December 31, 2015 are as follows (dollars in thousands): Fair Value Measurements at December 31, 2015 Using Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value Balance Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 95,337 $ 95,337 $ — $ — $ 95,337 Securities available for sale 340,349 — 338,863 1,486 340,349 Restricted stock 5,312 — 5,312 — 5,312 Loans held for sale 3,266 — 3,266 — 3,266 Loans, net of allowance 992,924 — — 994,808 994,808 Bank owned life insurance 17,658 — 17,658 — 17,658 Accrued interest receivable 4,116 — 4,116 — 4,116 Financial Liabilities: Deposits $ 1,262,660 $ — $ 865,350 $ 396,551 $ 1,261,901 Repurchase agreements 40,611 — 40,611 — 40,611 Other borrowings 9,958 — — 10,293 10,293 Junior subordinated debt 27,622 — — 22,940 22,940 Accrued interest payable 655 — 655 — 655 The carrying values and estimated fair values of the Company's financial instruments at December 31, 2014 are as follows (dollars in thousands): Fair Value Measurements at December 31, 2014 Using Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value Balance Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 67,303 $ 67,303 $ — $ — $ 67,303 Securities available for sale 344,716 4,167 339,236 1,313 344,716 Restricted stock 4,534 — 4,534 — 4,534 Loans held for sale 616 — 616 — 616 Loans, net of allowance 828,498 — — 832,708 832,708 Bank owned life insurance 15,193 — 15,193 — 15,193 Accrued interest receivable 4,534 — 4,534 — 4,534 Financial Liabilities: Deposits $ 1,075,837 $ — $ 712,020 $ 365,310 $ 1,077,330 Repurchase agreements 53,480 — 53,480 — 53,480 Other borrowings 9,935 — — 10,432 10,432 Junior subordinated debt 27,521 — — 22,009 22,009 Accrued interest payable 587 — 587 — 587 The following methods and assumptions were used by the Company in estimating fair value disclosures for financial instruments: Cash and cash equivalents . The carrying amount is a reasonable estimate of fair value. Securities . Fair values are based on quoted market prices or dealer quotes. Restricted stock . The carrying value of restricted stock approximates fair value based on the redemption provisions of the respective entity. Loans held for sale . The carrying amount is at fair value. Loans. For variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values. Fair values for fixed-rate loans are estimated based upon discounted cash flow analysis, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Fair values for nonperforming loans are estimated using discounted cash flow analysis or underlying collateral values, where applicable. Bank owned life insurance. Bank owned life insurance represents insurance policies on officers, directors, and past directors of the Company. The cash value of the policies are estimates using information provided by insurance carriers. These policies are carried at their cash surrender value, which approximates the fair value. Accrued interest receivable . The carrying amount is a reasonable estimate of fair value. Deposits . The fair value of demand deposits, savings deposits, and money market deposits equals the carrying value. The fair value of fixed-rate certificates of deposit is estimated by discounting the future cash flows using the current rates at which similar deposit instruments would be offered to depositors for the same remaining maturities. Repurchase agreements . The carrying amount is a reasonable estimate of fair value. Other borrowings. The fair values of other borrowings are estimated using discounted cash flow analysis based on the interest rates for similar types of borrowing arrangements. Junior subordinated debt. Fair value is calculated by discounting the future cash flows using the estimated current interest rates at which similar securities would be issued. Accrued interest payable . The carrying amount is a reasonable estimate of fair value. Off-balance sheet instruments . The fair value of letters of credit is based on fees currently charged for similar agreements or on the estimated cost to terminate them or otherwise settle the obligations with the counterparties at the reporting date. At December 31, 2015 and 2014 , the fair value of off balance sheet instruments was deemed immaterial, and therefore was not included in the table above. The various off-balance sheet instruments were discussed in Note 16. The Company assumes interest rate risk (the risk that interest rates will change) in its normal operations. As a result, the fair values of the Company's financial instruments will change when interest rates change and that change may be either favorable or unfavorable to the Company.

Dividend Restrictions and Regul

Dividend Restrictions and Regulatory Capital	12 Months Ended
	Dec. 31, 2015
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Dividend Restrictions and Regulatory Capital	Dividend Restrictions and Regulatory Capital The approval of the Office of the Comptroller of the Currency is required if the total of all dividends declared by a national bank in any calendar year exceeds the bank's retained net income, as defined, for that year combined with its retained net income for the preceding two calendar years. Under this formula, the Bank can distribute as dividends to the Company, without the approval of the Office of the Comptroller of the Currency, $8,535,000 as of December 31, 2015 . Dividends paid by the Bank to the Company are the only significant source of funding for dividends paid by the Company to its shareholders. Banks and bank holding companies are subject to various regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate certain regulatory action. The final rules implementing Basel Committee on Banking Supervision's capital guidelines for U.S. banks (Basel III rules) became effective for the Company on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. The net unrealized gain or loss on available for sale securities is included in computing regulatory capital. Capital amounts and ratios for December 31, 2014 are calculated using Basel I rules. Management believes as of December 31, 2015, the Company and Bank meet all capital adequacy requirements to which they are subject. Prompt corrective action regulations provide five classifications: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. At year-end 2015 and 2014 , the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the Bank's category. Actual and required capital amounts (in thousands) and ratios are presented below at year-end: Actual Required for Capital Adequacy Purposes To Be Well Amount Ratio Amount Ratio Amount Ratio December 31, 2015 Common Equity Tier 1 Company $ 150,916 12.88 % $ 52,739 >4.50 % Bank 170,741 14.58 52,691 >4.50 $ 76,109 >6.50 % Total Capital Company 191,542 16.34 93,758 >8.00 Bank 183,526 15.67 93,673 >8.00 117,091 >10.00 Tier 1 Capital Company 178,538 15.23 70,319 >6.00 Bank 170,741 14.58 70,255 >6.00 93,673 >8.00 Leverage Capital Company 178,538 12.05 59,260 >4.00 Bank 170,741 11.54 59,187 >4.00 73,984 >5.00 December 31, 2014 Total Capital Company $ 168,495 17.86 % $ 75,490 >8.00 % Bank 155,174 16.48 75,310 >8.00 $ 94,137 >10.00 % Tier 1 Capital Company 156,549 16.59 37,745 >4.00 Bank 143,395 15.23 37,655 >4.00 56,482 >6.00 Leverage Capital Company 156,549 12.16 51,511 >4.00 Bank 143,397 11.15 51,434 >4.00 64,293 >5.00 The capital conservation buffer requirement will be phased in beginning January 1, 2016, at 0.625% of risk-weighted assets, increasing by the same amount each year until fully implemented at 2.5% on January 1, 2019. the capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of common equity Tier 1 to risk-weighted assets above the minimum but below the conservation buffer will face constraints on dividends, equity repurchases, and compensation based on the amount of the shortfall. If the new capital ratios described above had been in full implementation at December 31, 2015, in management's opinion, the Bank and the Company would have remained "well capitalized."

Segment and Related Information

Segment and Related Information	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Segment and Related Information	Segment and Related Information The Company has two reportable segments, community banking and trust and investment services. Community banking involves making loans to and generating deposits from individuals and businesses. All assets and liabilities of the Company are allocated to community banking. Investment income from securities is also allocated to the community banking segment. Loan fee income, service charges from deposit accounts, and non-deposit fees such as automated teller machine fees and insurance commissions generate additional income for community banking. Trust and investment services include estate planning, trust account administration, investment management, and retail brokerage. Investment management services include purchasing equity, fixed income, and mutual fund investments for customer accounts. The trust and investment services division receives fees for investment and administrative services. Amounts shown in the "Other" column include activities of the Company which are primarily debt service on trust preferred securities and corporate items. Intersegment eliminations primarily consist of the Company's interest income on deposits held by the Bank. Segment information as of and for the years ended December 31, 2015 , 2014 , and 2013 , is shown in the following table (dollars in thousands): 2015 Community Banking Trust and Investment Services Other Intersegment Eliminations Total Interest income $ 55,109 $ — $ 60 $ — $ 55,169 Interest expense 5,144 — 760 — 5,904 Noninterest income 8,386 4,881 20 — 13,287 Income (loss) before income taxes 19,398 2,737 (1,076 ) — 21,059 Net income (loss) 13,793 1,956 (710 ) — 15,039 Depreciation and amortization 3,022 12 — — 3,034 Total assets 1,545,377 — 225,533 (223,311 ) 1,547,599 Goodwill 43,872 — — — 43,872 Capital expenditures 1,453 21 — — 1,474 2014 Community Banking Trust and Investment Services Other Intersegment Eliminations Total Interest income $ 47,395 $ — $ 60 $ — $ 47,455 Interest expense 4,988 — 742 — 5,730 Noninterest income 6,317 4,840 19 — 11,176 Income (loss) before income taxes 15,953 3,012 (1,022 ) — 17,943 Net income (loss) 11,277 2,138 (674 ) — 12,741 Depreciation and amortization 2,791 11 — — 2,802 Total assets 1,338,465 — 201,482 (193,455 ) 1,346,492 Goodwill 39,043 — — — 39,043 Capital expenditures 1,046 3 — — 1,049 2013 Community Banking Trust and Investment Services Other Intersegment Eliminations Total Interest income $ 52,928 $ — $ 28 $ — $ 52,956 Interest expense 5,829 — 754 — 6,583 Noninterest income 6,649 4,158 20 — 10,827 Income (loss) before income taxes 20,142 2,605 (946 ) — 21,801 Net income (loss) 14,489 1,882 (624 ) — 15,747 Depreciation and amortization 3,220 15 — — 3,235 Total assets 1,305,540 — 195,076 (193,104 ) 1,307,512 Goodwill 39,043 — — — 39,043 Capital expenditures 861 4 — — 865

Parent Company Financial Inform

Parent Company Financial Information	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Parent Company Financial Information	Parent Company Financial Information Condensed Parent Company financial information is as follows (dollars in thousands): December 31, Condensed Balance Sheets 2015 2014 Cash $ 5,571 $ 10,980 Investment in subsidiaries 218,543 188,829 Due from subsidiaries 85 347 Other assets 1,504 1,326 Total Assets $ 225,703 $ 201,482 Junior subordinated debt $ 27,622 $ 27,521 Other liabilities 246 181 Shareholders' equity 197,835 173,780 Total Liabilities and Shareholders' Equity $ 225,703 $ 201,482 Years Ended December 31, Condensed Statements of Income 2015 2014 2013 Dividends from subsidiary $ 11,000 $ 17,000 $ 9,000 Other income 80 79 48 Expenses 1,156 1,100 994 Income taxes (benefit) (366 ) (347 ) (322 ) Income before equity in undistributed earnings of subsidiary 10,290 16,326 8,376 Equity in (distributed) undistributed earnings of subsidiary 4,749 (3,585 ) 7,371 Net Income $ 15,039 $ 12,741 $ 15,747 Years Ended December 31, Condensed Statements of Cash Flows 2015 2014 2013 Cash provided by dividends received from subsidiary $ 11,000 $ 17,000 $ 9,000 Cash used for payment of dividends (8,068 ) (7,237 ) (7,248 ) Cash used for repurchase of stock (3,506 ) (1,508 ) — Cash used for acquisition of MainStreet (5,935 ) — — Proceeds from exercise of options and stock compensation 789 1,089 883 Other 311 (1,236 ) (2,051 ) Net increase (decrease) in cash $ (5,409 ) $ 8,108 $ 584

Concentrations of Credit Risk

Concentrations of Credit Risk	12 Months Ended
	Dec. 31, 2015
Risks and Uncertainties [Abstract]
Concentrations of Credit Risk	Concentrations of Credit Risk Substantially all the Company's loans are made within its market area, which includes Southern and Central Virginia and the northern portion of Central North Carolina. The ultimate collectibility of the Company's loan portfolio and the ability to realize the value of any underlying collateral, if necessary, are impacted by the economic conditions and real estate values of the market area. Loans secured by real estate were $822,037,000 , or 81.8% of the loan portfolio at December 31, 2015 , and $708,703,000 , or 84.3% of the loan portfolio at December 31, 2014 . Loans secured by commercial real estate represented the largest portion of loans at $430,186,000 at December 31, 2015 and $391,472,000 at December 31, 2014 , 42.8% and 46.6% , respectively of total loans. While there were no concentrations of loans to any individual, group of individuals, business, or industry that exceeded 10% of total loans at December 31, 2015 or 2014 , loans to lessors of nonresidential buildings represented 19.5% of total loans at December 31, 2015 and 16.7% at December 31, 2014 ; the lessees and lessors are engaged in a variety of industries.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2015
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information (dollars in thousands) For the Years ended December 31, 2015 2014 2013 Supplemental Schedule of Cash and Cash Equivalents: Cash and due from banks $ 19,352 $ 29,272 $ 19,808 Interest-bearing deposits in other banks 75,985 38,031 47,873 $ 95,337 $ 67,303 $ 67,681 Supplemental Disclosure of Cash Flow Information: Cash paid for: Interest on deposits and borrowed funds $ 5,836 $ 5,753 $ 6,728 Income taxes 3,090 4,371 4,530 Noncash investing and financing activities: Transfer of loans to other real estate owned 2,101 386 1,826 Unrealized gain (loss) on securities available for sale (2,652 ) 3,488 (9,571 ) Change in unfunded pension liability 538 (1,728 ) (1,761 ) Non-cash transactions related to acquisitions: Investment securities 18,507 — — Restricted stock 587 — — Loans 115,960 — — Premises and equipment 956 — — Deferred income taxes 2,794 — — Core deposit intangible 1,839 — — Other real estate owned, net 168 — — Bank owned life insurance 1,955 — — Other assets 1,049 — — Liabilities assumed: Demand, MMDA, and savings deposits 82,451 — — Time deposits 54,872 — — Other liabilities 3,076 — — Consideration: Issuance of common stock 20,483 — —

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income ("AOCI")	12 Months Ended
	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (AOCI)	Accumulated Other Comprehensive Income ("AOCI") Changes in each component of accumulated other comprehensive income (loss) were as follows (dollars in thousands): Net Unrealized Gains (Losses) on Securities Adjustments Related to Pension Benefits Accumulated Other Comprehensive Income (Loss) Balance at Balance at December 31, 2012 $ 9,800 $ (2,203 ) $ 7,597 Net unrealized losses on securities available for sale, net of tax, $(3,282) (6,097 ) — (6,097 ) Reclassification adjustment for realized gains on securities, net of tax, $(67) (125 ) — (125 ) Change in unfunded pension liability, net of tax, $616 — 1,145 1,145 Balance at December 31, 2013 3,578 (1,058 ) 2,520 Net unrealized gains on securities available for sale, net of tax, $1,398 2,595 — 2,595 Reclassification adjustment for realized gains on securities, net of tax, $(177) (328 ) — (328 ) Change in unfunded pension liability, net of tax, $(605) — (1,123 ) (1,123 ) Balance at December 31, 2014 5,845 (2,181 ) 3,664 Net unrealized losses on securities available for sale, net of tax, $(626) (1,159 ) — (1,159 ) Reclassification adjustment for realized gains on securities, net of tax, $(303) (564 ) — (564 ) Change in unfunded pension liability, net of tax, $189 — 349 349 Balance at December 31, 2015 $ 4,122 $ (1,832 ) $ 2,290 The following table provides information regarding reclassifications out of accumulated other comprehensive income (loss) (dollars in thousands): Reclassifications Out of Accumulated Other Comprehensive Income For the Three Years Ending December 31, 2015 Details about AOCI Components Amount Reclassified from AOCI Affected Line Item in the Statement of Where Net Income is Presented Years Ended December 31, 2015 2014 2013 Available for sale securities: Realized gain on sale of securities $ 867 $ 505 $ 192 Securities gains (losses), net (303 ) (177 ) (67 ) Income taxes Total reclassifications $ 564 $ 328 $ 125 Net of tax

Summary of Significant Accoun34

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Nature of Operations and Consolidation	Nature of Operations and Consolidation The consolidated financial statements include the accounts of American National Bankshares Inc. (the "Company") and its wholly owned subsidiary, American National Bank and Trust Company (the "Bank"). The Bank offers a wide variety of retail, commercial, secondary market mortgage lending, and trust and investment services which also include non-deposit products such as mutual funds and insurance policies. The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, goodwill and intangible assets, other than temporary impairment, the valuation of deferred tax assets and liabilities, and the valuation of foreclosed real estate. In April 2006, AMNB Statutory Trust I, a Delaware statutory trust (the "AMNB Trust") and a wholly owned subsidiary of the Company, was formed for the purpose of issuing preferred securities (the "Trust Preferred Securities") in a private placement pursuant to an applicable exemption from registration. Proceeds from the securities were used to fund the acquisition of Community First Financial Corporation ("Community First") which occurred in April 2006. On July 1, 2011, the Company completed its acquisition of MidCarolina Financial Corporation ("MidCarolina") pursuant to the terms and conditions of the Agreement and Plan of Reorganization, dated December 15, 2010, between the Company and MidCarolina. MidCarolina was headquartered in Burlington, North Carolina, and engaged in banking operations through its subsidiary bank, MidCarolina Bank. The transaction has expanded the Company's footprint in North Carolina, adding eight branches in Alamance and Guilford Counties . In July 2011, and in connection with its acquisition of MidCarolina Financial Corporation, the Company assumed liabilities of the MidCarolina Trust I and MidCarolina Trust II, two separate Delaware statutory trusts (the "MidCarolina Trusts"), which were also formed for the purpose of issuing preferred securities. Refer to Note 12 for further details concerning these entities. On January 1, 2015, the Company completed its acquisition of MainStreet BankShares, Inc. ("MainStreet") pursuant to the terms and conditions of the Agreement and Plan of Reorganization, dated as of August 24, 2014, between the Company and MainStreet (the "MainStreet Merger Agreement"). Immediately after the merger of MainStreet into the Company, Franklin Community Bank, N.A., MainStreet's wholly-owned bank subsidiary ("Franklin Bank"), merged with and into the Bank. Franklin Bank provided banking services to its customers from three banking offices located in Rocky Mount, Hardy, and Union Hall, Virginia. Refer to Note 2 for further details on the merger. All significant inter-company transactions and accounts are eliminated in consolidation, with the exception of the AMNB Trust and the MidCarolina Trusts, as detailed in Note 12.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash includes cash on hand, cash with correspondent banks, and cash on deposit at the Federal Reserve Bank of Richmond. Cash equivalents are short-term, highly liquid investments that are readily convertible to cash with original maturities of three months or less and are subject to an insignificant risk of change in value. Cash and cash equivalents are carried at cost.
Interest-bearing Deposits in Other Banks	Interest-bearing Deposits in Other Banks Interest-bearing deposits in other banks mature within one year and are carried at cost.
Securities	Securities Certain debt securities that management has the positive intent and ability to hold to maturity are classified as "held to maturity" and recorded at amortized cost. Trading securities are recorded at fair value with changes in fair value included in earnings. Securities not classified as held to maturity or trading, including equity securities with readily determinable fair values, are classified as "available for sale" and recorded at fair value, with unrealized gains and losses excluded from earnings and reported in other comprehensive income. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. The Company does not currently have any securities in held to maturity or trading and has no plans to add any to either category. The Company follows accounting guidance related to recognition and presentation of other-than-temporary impairment. The guidance specifies that (1) if a company does not have the intent to sell a debt security prior to recovery and (2) it is more likely than not that it will not have to sell the debt security prior to recovery, the security would not be considered other-than-temporarily impaired, unless there is a credit loss. When an entity does not intend to sell the security and it is more likely than not the entity will not have to sell the security before recovery of its cost basis, it will recognize the credit component of an other-than-temporary impairment of a debt security in earnings and the remaining portion in other comprehensive income. For held-to-maturity debt securities, the amount of an other-than-temporary impairment recorded in other comprehensive income for the noncredit portion of a previous other-than-temporary impairment should be amortized prospectively over the remaining life of the security on the basis of the timing of future estimated cash flows of the security. For equity securities, when the Company has decided to sell an impaired available for sale security and the entity does not expect the fair value of the security to fully recover before the expected time of sale, the security is deemed other-than-temporarily impaired in the period in which the decision to sell is made. The Company recognizes an impairment loss when the impairment is deemed other-than-temporary even if a decision to sell has not been made. Due to the nature and restrictions placed on the Company's investment in common stock of the Federal Home Loan Bank of Atlanta ("FHLB") and the Federal Reserve Bank of Richmond, these securities have been classified as restricted equity securities and carried at cost.
Loans Held for Sale	Loans Held for Sale Secondary market mortgage loans are designated as held for sale at the time of their origination. These loans are pre-sold with servicing released and the Company does not retain any interest after the loans are sold. These loans consist primarily of fixed-rate, single-family residential mortgage loans which meet the underwriting characteristics of certain government-sponsored enterprises (conforming loans). In addition, the Company requires a firm purchase commitment from a permanent investor before a loan can be committed, thus limiting interest rate risk. Loans held for sale are carried at fair value. Gains on sales of loans are recognized at the loan closing date and are included in noninterest income.
Derivative Loan Commitments	Derivative Loan Commitments The Company enters into mortgage loan commitments whereby the interest rate on the loan is determined prior to funding (rate lock commitments). Mortgage loan commitments are referred to as derivative loan commitments if the loan that will result from exercise of the commitment will be held for sale upon funding. Loan commitments that are derivatives are recognized at fair value on the consolidated balance sheets with net changes in their fair values recorded in other expenses. Derivative loan commitments resulted in no income or loss for 2015 , 2014 or 2013 . The period of time between issuance of a loan commitment and sale of the loan generally ranges from 30 to 60 days . The Company protects itself from changes in interest rates through the use of best efforts forward delivery contracts, by committing to sell a loan at the time the borrower commits to an interest rate with the intent that the buyer has assumed the interest rate risk on the loan. As a result, the Company is not generally exposed to significant losses nor will it realize significant gains related to its rate lock commitments due to changes in interest rates. The correlation between the rate lock commitments and the best efforts contracts is very high due to their similarity. The fair value of rate lock commitments and best efforts contracts is not readily ascertainable with precision because rate lock commitments and best efforts contracts are not actively traded in stand-alone markets. The Company determines the fair value of rate lock commitments and best efforts contracts by measuring the change in the estimated value of the underlying assets while taking into consideration the probability that the loan will be funded.
Loans	Loans The Company makes mortgage, commercial, and consumer loans. A substantial portion of the loan portfolio is secured by real estate. The ability of the Company's debtors to honor their contracts is dependent upon the real estate market and general economic conditions in the Company's market area. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off, generally are reported at their outstanding unpaid principal balance adjusted for the allowance for loan losses, and any deferred fees or costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.The accrual of interest on loans is generally discontinued at the time the loan is 90 days delinquent unless the credit is well-secured and in process of collection. Loans are typically charged off when the loan is 120 days past due, unless secured and in process of collection. Loans are placed on nonaccrual status or charged-off at an earlier date if collection of principal or interest is considered doubtful. Interest accrued but not collected for loans that are placed on nonaccrual status or charged-off is reversed against interest income. The interest on these loans is accounted for on the cash basis or cost recovery method, until qualifying for return to accrual status. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. A loan is considered past due when a payment of principal or interest or both is due but not paid. Management closely monitors past due loans in timeframes of 30-59 days, 60-89 days, and 90 or more days past due. These policies apply to all loan portfolio classes and segments. Substandard and doubtful risk graded commercial, commercial real estate, and construction loans equal to or greater than $100,000 on an unsecured basis, and equal to or greater than $250,000 on a secured basis are reviewed for impairment. All troubled debt restructurings, regardless of dollar amount, are also evaluated for impairment. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment and establishing a specific allowance include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis for commercial, commercial real estate, and construction loans by either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's obtainable market price, or the fair value of the collateral if the loan is collateral dependent. Generally, large groups of smaller balance homogeneous loans (residential real estate and consumer loans) are collectively evaluated for impairment. The Company's policy for recognizing interest income on impaired loans is consistent with its nonaccrual policy. The Company's loan portfolio is organized by major segment. These include: commercial, commercial real estate, residential real estate and consumer loans. Each segment has particular risk characteristics that are specific to the borrower and the generic category of credit. Commercial loan repayments are highly dependent on cash flows associated with the underlying business and its profitability. They can also be impacted by changes in collateral values. Commercial real estate loans share the same general risk characteristics as commercial loans, but are often more dependent on the value of the underlying real estate collateral and, when construction is involved, the ultimate completion of and sale of the project. Residential real estate loans are generally dependent on the value of collateral and the credit worthiness of the underlying borrower. Consumer loans are very similar in risk characteristics to residential real estate. In connection with the MidCarolina and MainStreet mergers, certain loans were acquired which exhibited deteriorated credit quality since origination and for which the Bank does not expect to collect all contractual payments. These purchased credit impaired loans are recorded at the amount paid, such that there is no carryover of the seller's allowance for loan losses. After acquisition, losses are recognized by an increase in the allowance for loan losses. Such purchased credit impaired loans are accounted for individually or aggregated into pools of loans based on common risk characteristics such as, credit score, loan type, and date of origination. The Company estimates the amount and timing of expected cash flows for each loan or pool, and the expected cash flows in excess of amount paid is recorded as interest income over the remaining life of the loan or pool (accretable yield). The excess of the loan's or pool's contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan or pool, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded as a provision for loan losses. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest income.
Troubled Debt Restructurings	Troubled Debt Restructurings In situations where, for economic or legal reasons related to a borrower's financial condition, management may grant a concession to the borrower that it would not otherwise consider, the related loan is classified as a troubled debt restructuring ("TDRs"). Management strives to identify borrowers in financial difficulty early and work with them to modify their loan to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where borrowers are granted new terms that provide for a reduction of either interest or principal, management measures any impairment on the restructuring as noted above for impaired loans.
Allowance for Loan Losses	Allowance for Loan Losses The purpose of the allowance for loan losses ("ALLL") is to provide for probable losses inherent in the loan portfolio. The allowance is increased by the provision for loan losses and by recoveries of previously charged-off loans. Loan charge-offs decrease the allowance. The goal of the Company is to maintain an appropriate, systematic, and consistently applied process to determine the amounts of the ALLL and the provision for loan loss expense. The Company uses certain practices to manage its credit risk. These practices include (1) appropriate lending limits for loan officers, (2) a loan approval process, (3) careful underwriting of loan requests, including analysis of borrowers, cash flows, collateral, and market risks, (4) regular monitoring of the portfolio, including diversification by type and geography, (5) review of loans by the Loan Review department, which operates independently of loan production (the Loan Review function consists of a co-sourced arrangement using both internal personnel and external vendors to provide the Company with a more robust review function of the loan portfolio), (6) regular meetings of the Credit Committees to discuss portfolio and policy changes and make decisions on large or unusual loan requests, and (7) regular meetings of the Asset Quality Committee which reviews the status of individual loans. Risk grades are assigned as part of the loan origination process. From time to time risk grades may be modified as warranted by the facts and circumstances surrounding the credit. Calculation and analysis of the allowance for loan losses is prepared quarterly by the Finance Department. The Company's Credit Committee, Capital Management Committee, Audit Committee, and the Board of Directors review the allowance for adequacy. The Company's allowance for loan losses has two basic components: the formula allowance and the specific allowance. Each of these components is determined based upon estimates and judgments. The formula allowance uses historical loss experience as an indicator of future losses, along with various qualitative factors, including levels and trends in delinquencies, nonaccrual loans, charge-offs and recoveries, trends in volume and terms of loans, effects of changes in underwriting standards, experience of lending staff, economic conditions, and portfolio concentrations. In the formula allowance for commercial and commercial real estate loans, the historical loss rate is combined with the qualitative factors, resulting in an adjusted loss factor for each risk-grade category of loans. The period-end balances for each loan risk-grade category are multiplied by the adjusted loss factor. Allowance calculations for consumer loans are calculated based on historical losses for each product category without regard to risk grade. This loss rate is combined with qualitative factors resulting in an adjusted loss factor for each product category. The specific allowance uses various techniques to arrive at an estimate of loss for specifically identified impaired loans. These include: • The present value of expected future cash flows discounted at the loan's effective interest rate. The effective interest rate on a loan is the rate of return implicit in the loan (that is, the contractual interest rate adjusted for any net deferred loan fees or costs and any premium or discount existing at the origination or acquisition of the loan); • The loan's observable market price, or • The fair value of the collateral, net of estimated costs to dispose, if the loan is collateral dependent. The use of these computed values is inherently subjective and actual losses could be greater or less than the estimates. No single statistic, formula, or measurement determines the adequacy of the allowance. Management makes subjective and complex judgments about matters that are inherently uncertain, and different amounts would be reported under different conditions or using different assumptions. For analytical purposes, management allocates a portion of the allowance to specific loan categories and specific loans. However, the entire allowance is used to absorb credit losses inherent in the loan portfolio, including identified and unidentified losses. The relationships and ratios used in calculating the allowance, including the qualitative factors, may change from period to period as facts and circumstances evolve. Furthermore, management cannot provide assurance that in any particular period the Company will not have sizeable credit losses in relation to the amount reserved. Management may find it necessary to significantly adjust the allowance, considering current factors at the time.
Premises and Equipment	Premises and Equipment Land is carried at cost. Premises and equipment are stated at cost, less accumulated depreciation and amortization. Premises and equipment are depreciated over their estimated useful lives ranging from three years to thirty-nine years ; leasehold improvements are amortized over the lives of the respective leases or the estimated useful lives of the improvements, whichever is less. Software is generally amortized over three years . Depreciation and amortization are recorded on the straight-line method. Costs of maintenance and repairs are charged to expense as incurred. Costs of replacing structural parts of major units are considered individually and are expensed or capitalized as the facts dictate. Gains and losses on routine dispositions are reflected in current operations.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill is subject to at least an annual assessment for impairment by applying a fair value based test. Additionally, acquired intangible assets (such as core deposit intangibles) are separately recognized if the benefit of the assets can be sold, transferred, licensed, rented, or exchanged, and amortized over their useful lives. Intangible assets related to branch transactions continued to amortize. The cost of purchased deposit relationships and other intangible assets, based on independent valuation, are being amortized over their estimated lives ranging from eight to ten years. The Company records as goodwill the excess of purchase price over the fair value of the identifiable net assets acquired. Impairment testing is performed annually, as well as when an event triggering impairment may have occurred. The Company performs its annual analysis as of June 30 each fiscal year. Accounting guidance permits preliminary assessment of qualitative factors to determine whether more substantial impairment testing is required. The Company chose to bypass the preliminary assessment and utilized a two-step process for impairment testing of goodwill. The first step tests for impairment, while the second step, if necessary, measures the impairment.
Trust Assets	Trust Assets Securities and other property held by the trust and investment services segment in a fiduciary or agency capacity are not assets of the Company and are not included in the accompanying consolidated financial statements.
Other Real Estate Owned	Other Real Estate Owned Other real estate owned represents real estate that has been acquired through loan foreclosures or deeds received in lieu of loan payments. Generally, such properties are appraised at the time acquired, and are recorded at the fair value less estimated selling costs. Subsequent to foreclosure, valuations are periodically performed by management and the assets are carried at the lower of carrying amount or fair value less cost to sell. Revenue and expenses from operations and changes in the valuation allowance are included in noninterest expense.
Bank Owned Life Insurance (BOLI)	Bank Owned Life Insurance (BOLI) The Company has acquired BOLI in connection with three acquisitions over the past decade. The asset is reflected as the cash surrender value of the policies as provided by the insurer on a monthly basis.
Transfers of Financial Assets	Transfers of Financial Assets Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company – put presumptively beyond reach of the transferor and its creditors, even in bankruptcy or other receivership, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of 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 or the ability to unilaterally cause the holder to return specific assets.
Income Taxes	Income Taxes The Company uses the balance sheet method to account for deferred income tax assets and liabilities. Under this method, the net deferred tax asset or liability is determined based on the tax effects of the temporary differences between the book and tax bases of the various balance sheet assets and liabilities and gives current recognition to changes in tax rates and laws. When tax returns are filed, it is highly certain that some positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the position taken or the amount of the position that would be ultimately sustained. The benefit of a tax position is recognized in the financial statements in the period during which, based on all available evidence, management believes it is more likely than not that the position will be sustained upon examination, including the resolution of appeals or litigation processes, if any. Tax positions taken are not offset or aggregated with other positions. Tax positions that meet the more-likely-than-not recognition threshold are measured as the largest amount of tax benefit that is more than 50 percent likely of being realized upon settlement with the applicable taxing authority. The portion of the benefits associated with tax positions taken that exceeds the amount measured as described above is reflected as a liability for unrecognized tax benefits in the accompanying consolidated balance sheet along with any associated interest and penalties that would be payable to the taxing authorities upon examination.
Stock-Based Compensation	Stock-Based Compensation Stock compensation accounting guidance Accounting Standards Codification ("ASC 718"), " Compensation – Stock Compensation " requires that the compensation cost relating to share-based payment transactions be recognized in financial statements. That cost will be measured based on the grant date fair value of the equity or liability instruments issued. The stock compensation accounting guidance covers a wide range of share-based compensation arrangements including stock options, restricted share plans, performance-based awards, share appreciation rights, and employee share purchase plans. The stock compensation accounting guidance requires that compensation cost for all stock awards be calculated and recognized over the employees' service period, generally defined as the vesting period. For awards with graded-vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. A Black-Scholes model is used to estimate the fair value of stock options, while the market price of the Company's common stock at the date of grant is used for restricted stock awards.
Earnings Per Common Share	Earnings Per Common Share Basic earnings per common share represent income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per common share reflect the impact of additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustment to income that would result from the assumed issuance. Potential common shares that may be issued by the Company consist solely of outstanding stock options, and are determined using the treasury method. Nonvested shares of restricted stock are included in the computation of basic earning per share because the holder has voting rights and shares in non-forfeitable dividends during the vesting period.
Comprehensive Income	Comprehensive Income Comprehensive income is shown in a two statement approach, the first statement presents total net income and its components followed by a second statement that presents all the components of other comprehensive income such as unrealized gains and losses on available for sale securities and changes in the funded status of a defined benefit postretirement plan.
Advertising and Marketing Costs	Advertising and Marketing Costs Advertising and marketing costs are expensed as incurred, and were $356,000 , $453,000 , and $607,000 in 2015 , 2014 , and 2013 , respectively.
Mergers and Acquisitions	Mergers and Acquisitions Business combinations are accounted for under ASC 805, " Business Combinations" , using the acquisition method of accounting. The acquisition method of accounting requires an acquirer to recognize the assets acquired and the liabilities assumed at the acquisition date measured at their fair values as of that date. To determine the fair values, the Company relies on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques. Under the acquisition method of accounting, the Company identifies the acquirer and the closing date and applies applicable recognition principles and conditions. Acquisition-related costs are costs the Company incurs to effect a business combination. Those costs include advisory, legal, accounting, valuation, and other professional or consulting fees. Some other examples of costs to the Company include systems conversions, integration planning consultants and advertising costs. The Company accounts for acquisition-related costs as expenses in the periods in which the costs are incurred and the services are received, with one exception. The costs to issue debt or equity securities is recognized in accordance with other applicable GAAP. These acquisition-related costs have been and will be included within the Consolidated Statements of Income classified within the noninterest expense caption.
Reclassifications	Reclassifications Certain reclassifications have been made in prior years financial statements to conform to classifications used in the current year.
Use of Estimates	Use of Estimates In preparing consolidated financial statements in conformity with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, the valuation of other real estate owned, goodwill and intangible assets, the valuation of deferred tax assets, other-than-temporary impairments of securities, and acquired loans with specific credit-related deterioration.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In June 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Updated ("ASU") No. 2014-12, “Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period.” The new guidance applies to reporting entities that grant employees share-based payments in which the terms of the award allow a performance target to be achieved after the requisite service period. The amendments in the ASU require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. Existing guidance in “Compensation - Stock Compensation (Topic 718),” should be applied to account for these types of awards. The amendments in this ASU are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Early adoption is permitted and reporting entities may choose to apply the amendments in the ASU either on a prospective or retrospective basis. The Company does not expect the adoption of ASU 2014-12 to have a material impact on its consolidated financial statements. In August 2014, the FASB issued ASU No. 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.” This update is intended to provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. Management is required under the new guidance to evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date the financial statements are issued when preparing financial statements for each interim and annual reporting period. If conditions or events are identified, the ASU specifies the process that must be followed by management and also clarifies the timing and content of going concern footnote disclosures in order to reduce diversity in practice. The amendments in this ASU are effective for annual periods and interim periods within those annual periods beginning after December 15, 2016. Early adoption is permitted. The Company does not expect the adoption of ASU 2014-15 to have a material impact on its consolidated financial statements. In November 2014, the FASB issued ASU No. 2014-16, “Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share Is More Akin to Debt or to Equity.” The amendments in ASU do not change the current criteria in GAAP for determining when separation of certain embedded derivative features in a hybrid financial instrument is required. The amendments clarify how current GAAP should be interpreted in evaluating the economic characteristics and risks of a host contract in a hybrid financial instrument that is issued in the form of a share. Specifically, the amendments clarify that an entity should consider all relevant terms and features, including the embedded derivative feature being evaluated for bifurcation, in evaluating the nature of the host contract. Furthermore, the amendments clarify that no single term or feature would necessarily determine the economic characteristics and risks of the host contract. Rather, the nature of the host contract depends upon the economic characteristics and risks of the entire hybrid financial instrument. The amendments in this ASU also clarify that, in evaluating the nature of a host contract, an entity should assess the substance of the relevant terms and features (i.e., the relative strength of the debt-like or equity-like terms and features given the facts and circumstances) when considering how to weight those terms and features. The amendments in this ASU are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption, including adoption in an interim period, is permitted. The Company does not expect the adoption of ASU 2014-16 to have a material impact on its consolidated financial statements. In January 2015, the FASB issued ASU No. 2015-01, “Income Statement-Extraordinary and Unusual Items (Subtopic 225-20): Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items.” The amendments in this ASU eliminate from U.S. GAAP the concept of extraordinary items. Subtopic 225-20, Income Statement - Extraordinary and Unusual Items, required that an entity separately classify, present, and disclose extraordinary events and transactions. Presently, an event or transaction is presumed to be an ordinary and usual activity of the reporting entity unless evidence clearly supports its classification as an extraordinary item. If an event or transaction meets the criteria for extraordinary classification, an entity is required to segregate the extraordinary item from the results of ordinary operations and show the item separately in the income statement, net of tax, after income from continuing operations. The entity also is required to disclose applicable income taxes and either present or disclose earnings-per-share data applicable to the extraordinary item. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments prospectively. A reporting entity also may apply the amendments retrospectively to all prior periods presented in the financial statements. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The Company does not expect the adoption of ASU 2015-01 to have a material impact on its consolidated financial statements. In February 2015, the FASB issued ASU No. 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis.” The amendments in this ASU are intended to improve targeted areas of consolidation guidance for legal entities such as limited partnerships, limited liability corporations, and securitization structures (collateralized debt obligations, collateralized loan obligations, and mortgage-backed security transactions). In addition to reducing the number of consolidation models from four to two, the new standard simplifies the FASB ASC and improves current GAAP by placing more emphasis on risk of loss when determining a controlling financial interest, reducing the frequency of the application of related-party guidance when determining a controlling financial interest in a variable interest entity ("VIE"), and changing consolidation conclusions for public and private companies in several industries that typically make use of limited partnerships or VIEs. The amendments in this ASU are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. ASU 2015-02 may be applied retrospectively in previously issued financial statements for one or more years with a cumulative-effect adjustment to retained earnings as of the beginning of the first year restated. The Company does not expect the adoption of ASU 2015-02 to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs.” The amendments in this ASU are intended to simplify the presentation of debt issuance costs. These amendments require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. The amendments in this ASU are effective for public business entities for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted for financial statements that have not been previously issued. The Company does not expect the adoption of ASU 2015-03 to have a material impact on its consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-05, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement.” The amendments in this ASU provide guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software 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 amendments do not change the accounting for a customer’s accounting for service contracts. As a result of the amendments, all software licenses within the scope of Subtopic 350-40 will be accounted for consistent with other licenses of intangible assets. The amendments in this ASU are effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2015. Early adoption is permitted. An entity can elect to adopt the amendments either: (1) prospectively to all arrangements entered into or materially modified after the effective date; or (2) retrospectively. The Company does not expect the adoption of ASU 2015-05 to have a material impact on its consolidated financial statements. In May 2015, the FASB issued ASU No. 2015-08, “Business Combinations (Topic 805): Pushdown Accounting - Amendments to SEC Paragraphs Pursuant to Staff Accounting Bulletin No. 115.” The amendments in ASU 2015-08 amend various Securities and Exchange Commission (the "SEC") paragraphs pursuant to the issuance of Staff Accounting Bulletin No. 115, Topic 5: Miscellaneous Accounting, regarding various pushdown accounting issues, and did not have a material impact on our (consolidated) financial statements. The Company does not expect the adoption of ASU 2015-08 to have a material impact on its consolidated financial statements. In July 2015, the FASB issued ASU No. 2015-12, “Plan Accounting: Defined Benefit Pension Plans (Topic 960), Defined Contribution Pension Plans (Topic 962), and Health and Welfare Benefit Plans (Topic 965) - 1. Fully Benefit-Responsive Investment Contracts, 2. Plan Investment Disclosures, and 3. Measurement Date Practical Expedient.” The amendments within this ASU are in 3 parts. Among other things, Part 1 amendments designate contract value as the only required measure for fully benefit-responsive investment contracts; Part 2 amendments eliminate the requirement that plans disclose: (a) individual investments that represent 5 percent or more of net assets available for benefits; and (b) the net appreciation or depreciation for investments by general type requirements for both participant-directed investments and nonparticipant-directed investments. Part 3 amendments provide a practical expedient to permit plans to measure investments and investment-related accounts (e.g., a liability for a pending trade with a broker) as of a month-end date that is closest to the plan’s fiscal year-end, when the fiscal period does not coincide with month-end. The amendments in Parts 1 and 2 of this ASU are effective on a retrospective basis and Part 3 is effective on a prospective basis, for fiscal years beginning after December 15, 2015. Early adoption is permitted. The Company does not expect the adoption of ASU 2015-12 to have a material impact on its consolidated financial statements. In August 2015, the FASB issued ASU No. 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of Effective Date.” The amendments in ASU 2015-14 defer the effective date of ASU 2014-09 for all entities by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. All other entities should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2018, and interim reporting periods within annual reporting periods beginning after December 15, 2019. All other entities may apply the guidance in ASU 2014-09 earlier as of an annual reporting period beginning after December 15, 2016, including interim reporting periods within that reporting period. All other entities also may apply the guidance in ASU 2014-09 earlier as of an annual reporting period beginning after December 15, 2016, and interim reporting periods within annual reporting periods beginning one year after the annual reporting period in which the entity first applies the guidance in ASU 2014-09. The Company is currently assessing the impact that ASU 2015-14 will have on its consolidated financial statements. In August 2015, the FASB issued ASU 2015-15, “Interest - Imputation of Interest (Subtopic 835-30) - Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements (Amendments to SEC Paragraphs Pursuant to Staff Announcement at June 18, 2015 EITF Meeting).” On April 7, 2015, the FASB issued ASU 2015-03, Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which requires entities to present debt issuance costs related to a recognized debt liability as a direct deduction from the carrying amount of that debt liability. The guidance in ASU 2015-03 (see paragraph 835-30-45-1A) does not address presentation or subsequent measurement of debt issuance costs related to line-of-credit arrangements. Given the absence of authoritative guidance within ASU 2015-03 for debt issuance costs related to line-of-credit arrangements, the SEC staff stated that they would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. ASU 2015-15 adds these SEC comments to the "S" section of the Codification. The adoption of ASU 2015-15 did not have a material impact on our consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments.” The amendments in ASU 2015-16 require that an acquirer recognize adjustments to estimated amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The amendments require that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the estimated amounts, calculated as if the accounting had been completed at the acquisition date. The amendments also require an entity to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the estimated amounts had been recognized as of the acquisition date. The amendments in this ASU are effective for public business entities for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2016, and interim periods within fiscal years beginning after December 15, 2017. The amendments should be applied prospectively to adjustments to provisional amounts that occur after the effective date with earlier application permitted for financial statements that have not been issued. The Company does not expect the adoption of ASU 2015-16 to have a material impact on its consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” The amendments in ASU 2016-01, among other things: (1) Requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; (2) Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (3) Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables); and 4) Eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The amendments in this ASU are effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently assessing the impact that ASU 2016-01 will have on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” Among other things, in the amendments in ASU 2016-02, lessees will be required to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) A lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) A right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted upon issuance. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently assessing the impact that ASU 2016-02 will have on its consolidated financial statements.

Acquisition of MainStreet Ban35

Acquisition of MainStreet BankShares, Inc. (Tables)	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Schedule of consideration paid, and the fair value of identifiable assets acquired and liabilities assumed	In connection with the acquisition, the consideration paid, and the fair value of identifiable assets acquired and liabilities assumed as of the merger date are summarized in the following table (dollar in thousands): Consideration Paid: Common shares issued (825,586) $ 20,483 Cash paid to Shareholders 5,935 Value of consideration 26,418 Assets acquired: Cash and cash equivalents 18,173 Investment securities 18,507 Restricted stock 587 Loans 115,960 Premises and equipment 956 Deferred income taxes 2,794 Core deposit intangible 1,839 Other real estate owned 168 Bank owned life insurance 1,955 Accrued interest receivable and other assets 1,049 Total assets 161,988 Liabilities assumed: Deposits 137,323 Accrued interest payable and other liabilities 3,076 Total liabilities 140,399 Net assets acquired 21,589 Goodwill resulting from merger with MainStreet $ 4,829 The following table details the changes in fair value of net assets acquired and liabilities assumed from the amounts originally reported in the Form 10-Q for the quarterly period ended September 30, 2015 (dollars in thousands): Goodwill at September 30, 2015 $ 5,290 Effect of adjustments to: Loans (723 ) Deferred income taxes 262 Goodwill at December 31, 2015 $ 4,829
Schedule of acquired loans	The following table details the acquired loans that are accounted for in accordance with FASB ASC 310-30 as of January 1, 2015, after adjusting for the aforementioned revaluation in the third quarter (dollars in thousands): Contractually required principal and interest at acquisition $ 33,066 Contractual cash flows not expected to be collected (nonaccretable difference) 2,044 Expected cash flows at acquisition 35,110 Interest component of expected cash flows (accretable discount) 7,140 Fair value of acquired impaired loans accounted for under FASB ASC 310-30 $ 27,970
Schedule of pro forma information	The following table presents certain pro forma information as if MainStreet had been acquired on January 1, 2013. These results combine the historical results of MainStreet into the Company's Consolidated Statement of Income, and while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on January 1, 2013. In particular, no adjustments have been made to adjust provision for loan losses on the acquired loan portfolio and related income taxes had they been recorded at fair value on January 1, 2013. In addition, expenses related to systems conversions and other costs of integration were expensed as incurred during 2015. The Company expects to achieve further operating cost savings and other business synergies, including branch closures, as a result of the acquisition which are not reflected in the pro forma amounts below (dollars in thousands): Pro forma 2014 2013 (unaudited) (unaudited) Net interest income $ 48,522 $ 53,294 Provision for loan losses 458 437 Non-interest income 12,081 10,195 Non-interest expense 40,148 39,011 Income Taxes 5,999 7,212 Net income $ 13,998 $ 16,829

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of amortized cost and estimated fair value of investments in debt securities	The amortized cost and estimated fair value of investments in debt securities at December 31, 2015 and 2014 were as follows (dollars in thousands): December 31, 2015 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Securities available for sale: Federal agencies and GSEs $ 81,601 $ 170 $ 319 $ 81,452 Mortgage-backed and CMOs 70,520 799 389 70,930 State and municipal 170,268 5,659 36 175,891 Corporate 10,619 28 57 10,590 Equity securities 1,000 486 — 1,486 Total securities available for sale $ 334,008 $ 7,142 $ 801 $ 340,349 December 31, 2014 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Securities available for sale: Federal agencies and GSEs $ 81,958 $ 252 $ 104 $ 82,106 Mortgage-backed and CMOs 56,289 1,248 112 57,425 State and municipal 188,060 7,523 90 195,493 Corporate 8,416 16 53 8,379 Equity securities 1,000 313 — 1,313 Total securities available for sale $ 335,723 $ 9,352 $ 359 $ 344,716
Amortized cost and estimated fair value of investments in securities by contractual maturity	The amortized cost and estimated fair value of investments in securities at December 31, 2015 , by contractual maturity, are shown in the following table. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Because mortgage-backed securities have both known principal repayment terms as well as unknown principal repayments due to potential borrower pre-payments, it is difficult to accurately predict the final maturity of these investments. Mortgage-backed securities are shown separately (dollars in thousands): Available for Sale Amortized Cost Fair Value Due in one year or less $ 28,046 $ 28,134 Due after one year through five years 119,404 121,825 Due after five years through ten years 91,445 93,918 Due after ten years 23,593 24,056 Mortgage-backed and CMOs 70,520 70,930 Equity securities 1,000 1,486 $ 334,008 $ 340,349
Gross realized gains and losses	Gross realized gains and losses from the sale of securities available for sale were as follows (dollars in thousands): For the Years Ended December 31, 2015 2014 2013 Realized gains $ 871 $ 507 $ 229 Realized losses (4 ) (2 ) (37 ) Other-than-temporary impairment — — —
Schedule of available for sale securities, continuous unrealized loss position	The table below shows gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities had been in a continuous unrealized loss position, at December 31, 2014 (dollars in thousands): Total Less than 12 Months 12 Months or More Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Federal agencies and GSEs $ 28,979 $ 104 $ 21,449 $ 35 $ 7,530 $ 69 Mortgage-backed and CMOs 7,182 112 1,171 13 6,011 99 State and municipal 20,542 90 15,836 60 4,706 30 Corporate 5,032 53 2,273 4 2,759 49 Total $ 61,735 $ 359 $ 40,729 $ 112 $ 21,006 $ 247 Available for sale securities that have been in a continuous unrealized loss position are as follows (dollars in thousands): Total Less than 12 Months 12 Months or More Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Federal agencies and GSEs $ 57,711 $ 319 $ 57,711 $ 319 $ — $ — Mortgage-backed and CMOs 37,368 389 35,424 346 1,944 43 State and municipal 13,540 36 12,716 34 824 2 Corporate 5,107 57 3,530 29 1,577 28 Total $ 113,726 $ 801 $ 109,381 $ 728 $ 4,345 $ 73

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Schedule of loans, excluding loans held for sale	Loans, excluding loans held for sale, at December 31, 2015 and 2014 were comprised of the following (dollars in thousands): December 31, 2015 2014 Commercial $ 177,481 $ 126,981 Commercial real estate: Construction and land development 72,968 50,863 Commercial real estate 430,186 391,472 Residential real estate: Residential 220,434 175,293 Home equity 98,449 91,075 Consumer 6,007 5,241 Total loans $ 1,005,525 $ 840,925
Schedule stating outstanding principal balance and the carrying amount of loan acquired	The outstanding principal balance and the carrying amount of these loans included in the consolidated balance sheets at December 31, 2015 and 2014 , are as follows (dollars in thousands): 2015 2014 Outstanding principal balance $ 145,380 $ 84,892 Carrying amount 135,254 78,111 The outstanding principal balance and related carrying amount of acquired impaired loans, for which the Company applies ASC 310-30 to account for interest earned, as of the indicated dates is as follows (dollars in thousands): December 31, 2015 December 31, 2014 Outstanding principal balance $ 40,951 $ 18,357 Carrying amount 33,878 14,933
Schedule of changes in the accretable discount on acquired loans	The following table presents changes in the accretable yield on acquired impaired loans, for which the Company applies ASC 310-30, for the year ended December 31, 2015 (dollars in thousands): 2015 2014 2013 Balance at January 1 $ 1,440 $ 2,046 $ 2,165 Additions from merger with MainStreet 7,140 — — Accretion (4,313 ) (1,185 ) (2,635 ) Reclassification from nonaccretable difference — 579 2,516 Other changes, net 3,032 — — Balance at December 31 $ 7,299 $ 1,440 $ 2,046
Schedule of analysis by portfolio segment of the entity's past due loans	The following table shows an analysis by portfolio segment of the Company's past due loans at December 31, 2015 (dollars in thousands): 30- 59 Days Past Due 60-89 Days Past Due 90 Days + Past Due and Still Accruing Non- Accrual Loans Total Past Due Current Total Loans Commercial $ 137 $ — $ — $ 90 $ 227 $ 177,254 $ 177,481 Commercial real estate: Construction and land development — — — 258 258 72,710 72,968 Commercial real estate 135 182 — 2,497 2,814 427,372 430,186 Residential: Residential 913 398 — 1,731 3,042 217,392 220,434 Home equity 140 12 — 620 772 97,677 98,449 Consumer 53 1 — 9 63 5,944 6,007 Total $ 1,378 $ 593 $ — $ 5,205 $ 7,176 $ 998,349 $ 1,005,525 The following table shows an analysis by portfolio segment of the Company's past due loans at December 31, 2014 (dollars in thousands): 30- 59 Days Past Due 60-89 Days Past Due 90 Days + Past Due and Still Accruing Non- Accrual Loans Total Past Due Current Total Loans Commercial $ 114 $ 165 $ — $ — $ 279 $ 126,702 $ 126,981 Commercial real estate: Construction and land development 44 269 — 279 592 50,271 50,863 Commercial real estate 257 — — 3,010 3,267 388,205 391,472 Residential: Residential 390 325 — 560 1,275 174,018 175,293 Home equity 223 60 — 262 545 90,530 91,075 Consumer 1 42 — 1 44 5,197 5,241 Total $ 1,029 $ 861 $ — $ 4,112 $ 6,002 $ 834,923 $ 840,925
Schedule of impaired loan balances by portfolio segment	The following table presents the Company's impaired loan balances by portfolio segment, excluding acquired impaired loans, at December 31, 2015 (dollars in thousands): Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial $ 4 $ 4 $ — $ 47 $ — Commercial real estate: Construction and land development 205 205 — 220 — Commercial real estate 1,202 1,206 — 1,504 1 Residential: Residential 127 124 — 126 — Home equity 173 173 — 305 — Consumer 13 13 — 14 — $ 1,724 $ 1,725 $ — $ 2,216 $ 1 With a related allowance recorded: Commercial $ 91 $ 91 $ — $ 99 $ — Commercial real estate: Construction and land development 448 449 6 563 26 Commercial real estate 390 391 3 353 17 Residential Residential 1,649 1,690 — 1,034 22 Home equity 397 396 25 327 — Consumer 8 9 1 11 — $ 2,983 $ 3,026 $ 35 $ 2,387 $ 65 Total: Commercial $ 95 $ 95 $ — $ 146 $ — Commercial real estate: Construction and land development 653 654 6 783 26 Commercial real estate 1,592 1,597 3 1,857 18 Residential: Residential 1,776 1,814 — 1,160 22 Home equity 570 569 25 632 — Consumer 21 22 1 25 — $ 4,707 $ 4,751 $ 35 $ 4,603 $ 66 The following table presents the Company's impaired loan balances by portfolio segment, excluding acquired impaired loans, at December 31, 2014 (dollars in thousands): Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: Commercial $ 7 $ 7 $ — $ 12 $ 1 Commercial real estate: Construction and land development 280 325 — 448 — Commercial real estate 1,520 1,797 — 1,844 — Residential: Residential 603 603 — 723 8 Home equity 256 256 — 316 — Consumer 1 1 — 2 — $ 2,667 $ 2,989 $ — $ 3,345 $ 9 With a related allowance recorded: Commercial $ — $ — $ — $ — $ — Commercial real estate: Construction and land development 576 577 12 593 34 Commercial real estate 1,275 1,422 149 1,297 8 Residential: Residential 4 4 1 4 — Home equity — — — — — Consumer 15 15 3 17 1 $ 1,870 $ 2,018 $ 165 $ 1,911 $ 43 Total: Commercial $ 7 $ 7 $ — $ 12 $ 1 Commercial real estate: Construction and land development 856 902 12 1,041 34 Commercial real estate 2,795 3,219 149 3,141 8 Residential: Residential 607 607 1 727 8 Home equity 256 256 — 316 — Consumer 16 16 3 19 1 $ 4,537 $ 5,007 $ 165 $ 5,256 $ 52
Schedule of detail of loans modified as troubled debt restructurings	The following table shows the detail of loans modified as TDRs during the year ended December 31, 2015 , 2014 , and 2013 , included in the impaired loan balances (dollars in thousands): Loans Modified as a TDR for the Year Ended December 31, 2015 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial — $ — $ — Commercial real estate 3 394 394 Equity 1 107 105 Residential real estate 4 596 583 Consumer — — — Total 8 $ 1,097 $ 1,082 Loans Modified as a TDR for the Year Ended December 31, 2014 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial — $ — $ — Commercial real estate 2 743 737 Equity 1 8 8 Residential real estate 2 121 124 Consumer — — — Total 5 $ 872 $ 869 Loans Modified as a TDR for the Year Ended December 31, 2013 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial — $ — $ — Commercial real estate 1 1,190 1,190 Equity — — — Residential real estate — — — Consumer — — — Total 1 $ 1,190 $ 1,190
Schedule of primary reason for troubled debt modifications	The following table summarizes the primary reason certain loan modifications were classified as TDRs and includes newly designated TDRs as well as modifications made to existing TDRs. Balances represent the recorded investment at the end of the year in which the modification was made. Rate modifications include TDRs made with below market interest rates that also include modifications of loan structures (dollars in thousands): Year Ended December 31, 2015 2014 2013 Type of Modification ALLL Type of Modification ALLL Type of Modification ALLL Rate Structure Impact Rate Structure Impact Rate Structure Impact Commercial $ — $ — $ — $ — $ — $ — $ — $ — $ — Commercial real estate — 394 — — 737 — — 1,190 137 Equity 105 — — — 8 — — — — Residential real estate — 583 — — 124 1 — — — Consumer — — — — — — — — — Total $ 105 $ 977 $ — $ — $ 869 $ 1 $ — $ 1,190 $ 137
Schedule of commercial loan portfolio broken down by internal risk grading	The following table shows the Company's loan portfolio broken down by internal risk grading as of December 31, 2014 (dollars in thousands): Commercial and Consumer Credit Exposure Credit Risk Profile by Internally Assigned Grade Commercial Construction and Land Development Commercial Real Estate Residential Real Estate Home Equity Pass $ 125,405 $ 45,534 $ 382,604 $ 165,367 $ 88,646 Special Mention 1,569 569 4,889 6,709 1,801 Substandard 7 4,760 3,979 3,217 628 Doubtful — — — — — Total $ 126,981 $ 50,863 $ 391,472 $ 175,293 $ 91,075 Consumer Credit Exposure Credit Risk Profile Based on Payment Activity Consumer Performing $ 5,240 Nonperforming 1 Total $ 5,241 The following table shows the Company's loan portfolio broken down by internal risk grading as of December 31, 2015 (dollars in thousands): Commercial and Consumer Credit Exposure Credit Risk Profile by Internally Assigned Grade Commercial Construction and Land Development Commercial Real Estate Residential Real Estate Home Equity Pass $ 175,963 $ 68,853 $ 418,719 $ 200,008 $ 96,142 Special Mention 1,364 1,210 5,860 14,638 1,314 Substandard 154 2,905 5,607 5,788 993 Doubtful — — — — — Total $ 177,481 $ 72,968 $ 430,186 $ 220,434 $ 98,449 Consumer Credit Exposure Credit Risk Profile Based on Payment Activity Consumer Performing $ 5,999 Nonperforming 8 Total $ 6,007

Allowance for Loan Losses and38

Allowance for Loan Losses and Reserve for Unfunded Lending Commitments (Tables)	12 Months Ended
	Dec. 31, 2015
Provision for Loan and Lease Losses [Abstract]
Schedule of changes in the allowance for loan losses	Changes in the allowance for loan losses and the reserve for unfunded lending commitments for each of the years in the three-year period ended December 31, 2015 , are presented below (dollars in thousands): Years Ended December 31, 2015 2014 2013 Allowance for Loan Losses Balance, beginning of year $ 12,427 $ 12,600 $ 12,118 Provision for loan losses 950 400 294 Charge-offs (1,200 ) (964 ) (837 ) Recoveries 424 391 1,025 Balance, end of year $ 12,601 $ 12,427 $ 12,600 Years Ended December 31, 2015 2014 2013 Reserve for Unfunded Lending Commitments Balance, beginning of year $ 163 $ 210 $ 201 Provision for (recovery) unfunded commitments 21 (47 ) 9 Charge-offs (recovery of) — — — Balance, end of year $ 184 $ 163 $ 210 The following table presents the Company's allowance for loan losses by portfolio segment and the related loan balance total by segment for the year ended December 31, 2015 (dollars in thousands): Commercial Commercial Real Estate Residential Real Estate Consumer Unallocated Total Allowance for Loan Losses Balance at December 31, 2014 $ 1,818 $ 6,814 $ 3,715 $ 80 $ — $ 12,427 Charge-offs (175 ) (482 ) (323 ) (220 ) — (1,200 ) Recoveries 32 124 139 129 — 424 Provision 390 474 15 71 — 950 Balance at December 31, 2015 $ 2,065 $ 6,930 $ 3,546 $ 60 $ — $ 12,601 Balance at December 31, 2015: Allowance for Loan Losses Individually evaluated for impairment $ — $ 9 $ 26 $ — $ — $ 35 Collectively evaluated for impairment 2,065 6,750 3,284 60 — 12,159 Acquired impaired loans — 171 236 — — 407 Total $ 2,065 $ 6,930 $ 3,546 $ 60 $ — $ 12,601 Loans Individually evaluated for impairment $ 95 $ 2,245 $ 2,346 $ 21 $ — $ 4,707 Collectively evaluated for impairment 176,798 487,177 297,281 5,684 — 966,940 Acquired impaired loans 588 13,732 19,256 302 — 33,878 Total $ 177,481 $ 503,154 $ 318,883 $ 6,007 $ — $ 1,005,525 The following table presents the Company's allowance for loan losses by portfolio segment and the related loan balance total by segment for the year ended December 31, 2014 (dollars in thousands): Commercial Commercial Real Estate Residential Real Estate Consumer Unallocated Total Allowance for Loan Losses Balance at December 31, 2013 $ 1,810 $ 6,819 $ 3,690 $ 99 $ 182 $ 12,600 Charge-offs (101 ) (510 ) (258 ) (95 ) — (964 ) Recoveries 51 66 191 83 — 391 Provision 58 439 92 (7 ) (182 ) 400 Balance at December 31, 2014 $ 1,818 $ 6,814 $ 3,715 $ 80 $ — $ 12,427 Balance at December 31, 2014: Allowance for Loan Losses Individually evaluated for impairment $ — $ 161 $ 1 $ 3 $ — $ 165 Collectively evaluated for impairment 1,815 6,400 3,424 77 — 11,716 Acquired impaired loans 3 253 290 — — 546 Total $ 1,818 $ 6,814 $ 3,715 $ 80 $ — $ 12,427 Loans Individually evaluated for impairment $ 7 $ 3,651 $ 863 $ 16 $ — $ 4,537 Collectively evaluated for impairment 126,774 429,660 259,796 5,225 — 821,455 Acquired impaired loans 200 9,024 5,709 — — 14,933 Total $ 126,981 $ 442,335 $ 266,368 $ 5,241 $ — $ 840,925

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Classifications of premises and equipment	Major classifications of premises and equipment at December 31, 2015 and 2014 are summarized as follows (dollars in thousands): December 31, 2015 2014 Land $ 6,077 $ 5,794 Buildings 23,481 22,963 Leasehold improvements 1,399 1,418 Furniture and equipment 18,686 18,722 49,643 48,897 Accumulated depreciation (26,076 ) (25,872 ) Premises and equipment, net $ 23,567 $ 23,025
Minimum annual rental payments under leases	The Company has entered into operating leases for several of its branch and ATM facilities. The minimum annual rental payments under these leases at December 31, 2015 are as follows (dollars in thousands): Minimum Lease Year Payments 2016 $ 882 2017 810 2018 624 2019 108 2020 30 $ 2,454

Goodwill and Other Intangible40

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the carrying amount of goodwill	The changes in the carrying amount of goodwill and intangibles for the twelve months ended December 31, 2015 , are as follows (dollars in thousands): Goodwill Intangibles Balance at December 31, 2014 $ 39,043 $ 2,045 Additions 4,829 1,839 Amortization — (1,201 ) Impairment — — Balance at December 31, 2015 $ 43,872 $ 2,683
Goodwill and intangible assets	Goodwill and intangible assets at December 31, 2015 and 2014 are as follow (dollars in thousands): Gross Carrying Value Accumulated Amortization Net Carrying Value December 31, 2015 Core deposit intangibles $ 11,808 $ (9,125 ) $ 2,683 Goodwill 43,872 — 43,872 December 31, 2014 Core deposit intangibles $ 9,969 $ (7,924 ) $ 2,045 Goodwill 39,043 — 39,043
Estimated future amortization expense of core deposit intangibles	As of December 31, 2015 , the estimated future amortization expense of core deposit intangibles is as follows (dollars in thousands): Year Amount 2016 $ 964 2017 528 2018 265 2019 219 2020 207 2021 and after 500 Total $ 2,683

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Scheduled maturities of certificates of deposits	At December 31, 2015 , the scheduled maturities of certificates of deposits (included in "time" deposits on the Consolidated Balance Sheet) were as follows (dollars in thousands): Year Amount 2016 $ 216,638 2017 78,863 2018 45,279 2019 24,945 2020 31,581 2021 and after 4 Total $ 397,310

Short-term Borrowings (Tables)

Short-term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2015
Short-term Debt [Abstract]
Schedule of short-term borrowings	Short-term borrowings consisted solely of customer repurchase agreements at December 31, 2015 and 2014 (dollars in thousands): December 31, 2015 December 31, 2014 Amount Weighted Average Rate Amount Weighted Average Rate Customer repurchase agreements $ 40,611 0.02 % $ 53,480 0.02 %

Long-term Borrowings (Tables)

Long-term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2015
Long-term Debt, Unclassified [Abstract]
Schedule of long term advances with federal home loan bank	Long-term borrowings consisted of the following fixed rate, advances as of December 31, 2015 and 2014 (dollars in thousands): 2015 2014 Due by Advance Amount Weighted Average Rate Due by Advance Amount Weighted Average Rate November 30, 2017 $ 9,958 2.98 % November 30, 2017 $ 9,935 2.98 %

Junior Subordinated Debt (Table

Junior Subordinated Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Trust Preferred Capital Notes [Abstract]
Schedule of junior subordinated debt securities outstanding payable	A description of the junior subordinated debt securities outstanding payable to the trusts is shown below (dollars in thousands): Principal Amount December 31, Issuing Entity Date Issued Interest Rate Maturity Date 2015 2014 AMNB Trust I 4/7/2006 Libor plus 1.35% 6/30/2036 $ 20,619 $ 20,619 MidCarolina Trust I 10/29/2002 Libor plus 3.45% 11/7/2032 4,209 4,154 MidCarolina Trust II 12/3/2003 Libor plus 3.45% 10/7/2033 2,794 2,748 $ 27,622 $ 27,521

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of summary of stock option transactions	A summary of stock option transactions for the year ended December 31, 2015 is as follows: Option Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value ($000) Outstanding at December 31, 2014 110,947 $ 26.08 Replacement stock options 43,086 20.02 Granted — — Exercised 42,680 18.49 Forfeited 4,090 19.03 Expired 39,392 31.18 Outstanding at December 31, 2015 67,871 $ 24.47 2.61 years $ 118 Exercisable at December 31, 2015 67,871 $ 24.47 2.61 years $ 118
Schedule of summary of information related to stock options outstanding	The following table summarizes information related to stock options outstanding on December 31, 2015 : Options Outstanding and Exercisable Range of Exercise Prices Number of Outstanding Options Weighted- Average Remaining Contractual Life Weighted- Average Exercise Price $20.01 to $25.00 37,300 2.89 years $ 22.45 $25.01 to $30.00 27,601 2.34 25.84 $30.01 to $41.67 2,970 1.70 37.04 67,871 2.61 years $ 24.47
Schedule of Nonvested restricted stock activity	Nonvested restricted stock activity for the year ended December 31, 2015 is summarized in the following table: Restricted Stock Shares Weighted Average Grant Date Value Nonvested at January 1, 2015 41,562 $ 21.39 Granted 19,155 $ 21.81 Vested 15,536 $ 19.51 Forfeited 3,618 $ 22.89 Nonvested at December 31, 2015 41,563 $ 22.15

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Components of entity's net deferred tax assets (liabilities)	The components of the Company's net deferred tax assets (liabilities) were as follows (dollars in thousands): December 31, 2015 2014 Deferred tax assets: Allowance for loan losses $ 4,410 $ 4,350 Nonaccrual loan interest 576 449 Other real estate owned valuation allowance 360 1,384 Deferred compensation 1,353 641 Loans (1) 4,641 3,953 Other 840 725 Total deferred tax assets 12,180 11,502 Deferred tax liabilities: Depreciation 700 759 Accretion of discounts on securities 320 274 Core deposit intangibles 939 716 Net unrealized gains on securities 2,219 3,148 Prepaid pension expense 52 83 Trust preferred fair value adjustment 616 652 Other 196 208 Total deferred tax liabilities 5,042 5,840 Net deferred tax assets $ 7,138 $ 5,662 (1) Fair value adjustments related to acquisition
Provision for income taxes	The provision for income taxes consists of the following (dollars in thousands): Years Ended December 31, 2015 2014 2013 Current tax expense $ 4,279 $ 5,153 $ 4,030 Deferred tax expense 1,741 49 2,024 Total income tax expense $ 6,020 $ 5,202 $ 6,054
A reconcilement of the "expected" Federal income tax expense to reported income tax expense	A reconcilement of the "expected" Federal income tax expense to reported income tax expense is as follows (dollars in thousands): Years Ended December 31, 2015 2014 2013 Expected federal tax expense $ 7,371 $ 6,280 $ 7,630 Nondeductible interest expense 78 63 77 Tax-exempt interest (1,338 ) (1,370 ) (1,491 ) State income taxes 222 405 254 Other, net (313 ) (176 ) (416 ) Total income tax expense $ 6,020 $ 5,202 $ 6,054

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Schedule of weighted average number of shares used in computing earnings per share	The following shows the weighted average number of shares used in computing earnings per common share and the effect on weighted average number of shares of potentially dilutive common stock. Potentially dilutive common stock had no effect on income available to common shareholders. Years Ended December 31, 2015 2014 2013 Shares Per Share Amount Shares Per Share Amount Shares Per Share Amount Basic earnings per share 8,680,502 $ 1.73 7,867,198 $ 1.62 7,872,870 $ 2.00 Effect of dilutive securities - stock options 7,948 — 10,378 — 11,691 — Diluted earnings per share 8,688,450 $ 1.73 7,877,576 $ 1.62 7,884,561 $ 2.00

Off-Balance Sheet Activities (T

Off-Balance Sheet Activities (Tables)	12 Months Ended
	Dec. 31, 2015
Off Balance Sheet Activities [Abstract]
Off-balance sheet financial instruments outstanding	The following off-balance sheet financial instruments whose contract amounts represent credit risk were outstanding at December 31, 2015 and 2014 (dollars in thousands): December 31, 2015 2014 Commitments to extend credit $ 301,360 $ 190,413 Standby letters of credit 4,286 3,333 Mortgage loan rate lock commitments 5,365 3,372

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2015
Related Party Transactions [Abstract]
Activity of loans to related parties	An analysis of these loans for 2015 is as follows (dollars in thousands): Balance at December 31, 2014 $ 15,532 Additions 5,366 Repayments (4,560 ) Balance at December 31, 2015 $ 16,338

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Schedule of components of net periodic benefit cost	Information pertaining to the activity in the plan is as follows (dollars in thousands): As of and for the Years Ended December 31, 2015 2014 2013 Change in Benefit Obligation: Projected benefit obligation at beginning of year $ 10,710 $ 8,996 $ 10,931 Service cost — — — Interest cost 297 304 288 Actuarial (gain) loss (100 ) 1,606 (201 ) Benefits paid (2,454 ) (196 ) (2,022 ) Projected benefit obligation at end of year 8,453 10,710 8,996 Change in Plan Assets: Fair value of plan assets at beginning of year 10,949 10,870 11,689 Actual return on plan assets (67 ) 275 1,203 Benefits paid (2,454 ) (196 ) (2,022 ) Fair value of plan assets at end of year 8,428 10,949 10,870 Funded Status at End of Year $ (25 ) $ 239 $ 1,874 Amounts Recognized in the Consolidated Balance Sheets Other assets (liabilities) $ (25 ) $ 239 $ 1,874 Amounts Recognized in Accumulated Other Comprehensive Loss Net actuarial loss $ 2,818 $ 3,356 $ 1,628 Deferred income tax asset (986 ) (1,175 ) (570 ) Amount recognized $ 1,832 $ 2,181 $ 1,058 As of and for the Years Ended December 31, 2015 2014 2013 Components of Net Periodic Benefit Cost Service cost $ — $ — $ — Interest cost 297 304 288 Expected return on plan assets (459 ) (469 ) (513 ) Recognized net loss due to settlement 671 — 594 Recognized net actuarial loss 293 73 275 Net periodic benefit cost $ 802 $ (92 ) $ 644 Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss Net actuarial (gain) loss $ (538 ) $ 1,728 $ (1,761 ) Amortization of prior service cost — — — Total recognized in other comprehensive (income) loss $ (538 ) $ 1,728 $ (1,761 ) Total Recognized in Net Periodic Benefit Cost and Other Comprehensive (Income) Loss $ 264 $ 1,636 $ (1,117 )
Weighted-average asset allocations by asset category	Below is a description of the plan's assets. The plan's weighted-average asset allocations by asset category are as follows as of December 31, 2015 and 2014 : Asset Category December 31, 2015 2014 Fixed Income 59.5 % 47.6 % Equity 32.0 % 25.2 % Cash and Accrued Income 8.5 % 27.2 % Total 100.0 % 100.0 %
Fair value of pension plan assets by asset category	The fair value of the Company's pension plan assets at December 31, 2015 and 2014 , by asset category are as follows (dollars in thousands): Fair Value Measurements at December 31, 2015 using Balance at December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Asset Category 2015 Level 1 Level 2 Level 3 Cash $ 675 $ 675 $ — $ — Fixed income securities Government sponsored entities 2,287 — 2,287 — Municipal bonds and notes 1,084 — 1,084 — Corporate bonds and notes 1,641 — 1,641 — Equity securities U.S. companies 2,481 2,481 — — Foreign companies 260 260 — — $ 8,428 $ 3,416 $ 5,012 $ — Fair Value Measurements at December 31, 2014 using Balance at December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Asset Category 2014 Level 1 Level 2 Level 3 Cash $ 2,979 $ 2,979 $ — $ — Fixed income securities Government sponsored entities 2,824 — 2,824 — Municipal bonds and notes 172 — 172 — Corporate bonds and notes 2,216 — 2,216 — Equity securities U.S. companies 2,384 2,384 — — Foreign companies 374 374 — — $ 10,949 $ 5,737 $ 5,212 $ —
Projected benefit payments	Projected benefit payments for the years 2016 to 2025 are as follows (dollars in thousands): Year Amount 2016 $ 1,400 2017 340 2018 547 2019 1,014 2020 453 2021-2025 3,876

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of fair value assets and liabilities measured on recurring basis	The following table summarizes the Company's assets that were measured at fair value on a nonrecurring basis during the period (dollars in thousands): Fair Value Measurements at December 31, 2015 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2015 Level 1 Level 2 Level 3 Assets: Loans held for sale $ 3,266 $ — $ 3,266 $ — Impaired loans, net of valuation allowance 2,948 — — 2,948 Other real estate owned, net 2,184 — — 2,184 Fair Value Measurements at December 31, 2014 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2014 Level 1 Level 2 Level 3 Assets: Loans held for sale $ 616 $ — $ 616 $ — Impaired loans, net of valuation allowance 1,705 — — 1,705 Other real estate owned, net 2,119 — — 2,119 The following table presents the balances of financial assets measured at fair value on a recurring basis during the period (dollars in thousands): Fair Value Measurements at December 31, 2015 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2015 Level 1 Level 2 Level 3 Assets: Securities available for sale: Federal agencies and GSEs $ 81,452 $ — $ 81,452 $ — Mortgage-backed and CMOs 70,930 — 70,930 — State and municipal 175,891 — 175,891 — Corporate 10,590 — 10,590 — Equity securities 1,486 — — 1,486 Total $ 340,349 $ — $ 338,863 $ 1,486 Fair Value Measurements at December 31, 2014 Using Balance as of December 31, Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description 2014 Level 1 Level 2 Level 3 Assets: Securities available for sale: Federal agencies and GSEs $ 82,106 $ 2,995 $ 79,111 $ — Mortgage-backed and CMOs 57,425 — 57,425 — State and municipal 195,493 1,172 194,321 — Corporate 8,379 — 8,379 — Equity Securities 1,313 — — 1,313 Total $ 344,716 $ 4,167 $ 339,236 $ 1,313
Schedule of fair value measurements using significant unobservable inputs (Level 3)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Balances as of January 1, 2015 Total Realized / Unrealized Gains (Losses) Included in Purchases, Sales, Issuances and Settlements, Net Transfer In (Out) of Level 3 Balances as of December 31, 2015 Net Income Other Comprehensive Income Securities available for sale: Equity $ 1,313 $ — $ 173 $ — $ — $ 1,486 Total assets $ 1,313 $ — $ 173 $ — $ — $ 1,486
Schedule of quantitative information of assets measured at Level 3	Quantitative Information About Level 3 Fair Value Measurements as of December 31, 2015 : Assets Valuation Technique Unobservable Input Weighted Rate Securities available for sale Third party model based techniques Stock price in different rate environments 49 % Impaired loans Discounted appraised value Selling cost 6 % Impaired loans Discounted cash flow analysis Market rate for borrower (discount rate) 4 % Other real estate owned Discounted appraised value Selling cost 6 % Quantitative Information About Level 3 Fair Value Measurements as of December 31, 2014 : Assets Valuation Technique Unobservable Input Weighted Rate Securities available for sale Third party model based techniques Stock price in different rate environments 31 % Impaired loans Discounted appraised value Selling cost 6 % Other real estate owned Discounted appraised value Selling cost 4 % Other real estate owned Discounted appraised value Discount for lack of marketability and age of appraisal 6 %
Schedule of carrying values and estimated fair values of the entity's financial instruments	The carrying values and estimated fair values of the Company's financial instruments as of December 31, 2015 are as follows (dollars in thousands): Fair Value Measurements at December 31, 2015 Using Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value Balance Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 95,337 $ 95,337 $ — $ — $ 95,337 Securities available for sale 340,349 — 338,863 1,486 340,349 Restricted stock 5,312 — 5,312 — 5,312 Loans held for sale 3,266 — 3,266 — 3,266 Loans, net of allowance 992,924 — — 994,808 994,808 Bank owned life insurance 17,658 — 17,658 — 17,658 Accrued interest receivable 4,116 — 4,116 — 4,116 Financial Liabilities: Deposits $ 1,262,660 $ — $ 865,350 $ 396,551 $ 1,261,901 Repurchase agreements 40,611 — 40,611 — 40,611 Other borrowings 9,958 — — 10,293 10,293 Junior subordinated debt 27,622 — — 22,940 22,940 Accrued interest payable 655 — 655 — 655 The carrying values and estimated fair values of the Company's financial instruments at December 31, 2014 are as follows (dollars in thousands): Fair Value Measurements at December 31, 2014 Using Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value Balance Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 67,303 $ 67,303 $ — $ — $ 67,303 Securities available for sale 344,716 4,167 339,236 1,313 344,716 Restricted stock 4,534 — 4,534 — 4,534 Loans held for sale 616 — 616 — 616 Loans, net of allowance 828,498 — — 832,708 832,708 Bank owned life insurance 15,193 — 15,193 — 15,193 Accrued interest receivable 4,534 — 4,534 — 4,534 Financial Liabilities: Deposits $ 1,075,837 $ — $ 712,020 $ 365,310 $ 1,077,330 Repurchase agreements 53,480 — 53,480 — 53,480 Other borrowings 9,935 — — 10,432 10,432 Junior subordinated debt 27,521 — — 22,009 22,009 Accrued interest payable 587 — 587 — 587

Dividend Restrictions and Reg52

Dividend Restrictions and Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Summary information regarding regulatory capital	Actual and required capital amounts (in thousands) and ratios are presented below at year-end: Actual Required for Capital Adequacy Purposes To Be Well Amount Ratio Amount Ratio Amount Ratio December 31, 2015 Common Equity Tier 1 Company $ 150,916 12.88 % $ 52,739 >4.50 % Bank 170,741 14.58 52,691 >4.50 $ 76,109 >6.50 % Total Capital Company 191,542 16.34 93,758 >8.00 Bank 183,526 15.67 93,673 >8.00 117,091 >10.00 Tier 1 Capital Company 178,538 15.23 70,319 >6.00 Bank 170,741 14.58 70,255 >6.00 93,673 >8.00 Leverage Capital Company 178,538 12.05 59,260 >4.00 Bank 170,741 11.54 59,187 >4.00 73,984 >5.00 December 31, 2014 Total Capital Company $ 168,495 17.86 % $ 75,490 >8.00 % Bank 155,174 16.48 75,310 >8.00 $ 94,137 >10.00 % Tier 1 Capital Company 156,549 16.59 37,745 >4.00 Bank 143,395 15.23 37,655 >4.00 56,482 >6.00 Leverage Capital Company 156,549 12.16 51,511 >4.00 Bank 143,397 11.15 51,434 >4.00 64,293 >5.00

Segment and Related Informati53

Segment and Related Information (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Schedule of segment information	Segment information as of and for the years ended December 31, 2015 , 2014 , and 2013 , is shown in the following table (dollars in thousands): 2015 Community Banking Trust and Investment Services Other Intersegment Eliminations Total Interest income $ 55,109 $ — $ 60 $ — $ 55,169 Interest expense 5,144 — 760 — 5,904 Noninterest income 8,386 4,881 20 — 13,287 Income (loss) before income taxes 19,398 2,737 (1,076 ) — 21,059 Net income (loss) 13,793 1,956 (710 ) — 15,039 Depreciation and amortization 3,022 12 — — 3,034 Total assets 1,545,377 — 225,533 (223,311 ) 1,547,599 Goodwill 43,872 — — — 43,872 Capital expenditures 1,453 21 — — 1,474 2014 Community Banking Trust and Investment Services Other Intersegment Eliminations Total Interest income $ 47,395 $ — $ 60 $ — $ 47,455 Interest expense 4,988 — 742 — 5,730 Noninterest income 6,317 4,840 19 — 11,176 Income (loss) before income taxes 15,953 3,012 (1,022 ) — 17,943 Net income (loss) 11,277 2,138 (674 ) — 12,741 Depreciation and amortization 2,791 11 — — 2,802 Total assets 1,338,465 — 201,482 (193,455 ) 1,346,492 Goodwill 39,043 — — — 39,043 Capital expenditures 1,046 3 — — 1,049 2013 Community Banking Trust and Investment Services Other Intersegment Eliminations Total Interest income $ 52,928 $ — $ 28 $ — $ 52,956 Interest expense 5,829 — 754 — 6,583 Noninterest income 6,649 4,158 20 — 10,827 Income (loss) before income taxes 20,142 2,605 (946 ) — 21,801 Net income (loss) 14,489 1,882 (624 ) — 15,747 Depreciation and amortization 3,220 15 — — 3,235 Total assets 1,305,540 — 195,076 (193,104 ) 1,307,512 Goodwill 39,043 — — — 39,043 Capital expenditures 861 4 — — 865

Parent Company Financial Info54

Parent Company Financial Information (Tables)	12 Months Ended
	Dec. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheets	Condensed Parent Company financial information is as follows (dollars in thousands): December 31, Condensed Balance Sheets 2015 2014 Cash $ 5,571 $ 10,980 Investment in subsidiaries 218,543 188,829 Due from subsidiaries 85 347 Other assets 1,504 1,326 Total Assets $ 225,703 $ 201,482 Junior subordinated debt $ 27,622 $ 27,521 Other liabilities 246 181 Shareholders' equity 197,835 173,780 Total Liabilities and Shareholders' Equity $ 225,703 $ 201,482
Condensed Statements of Income	Years Ended December 31, Condensed Statements of Income 2015 2014 2013 Dividends from subsidiary $ 11,000 $ 17,000 $ 9,000 Other income 80 79 48 Expenses 1,156 1,100 994 Income taxes (benefit) (366 ) (347 ) (322 ) Income before equity in undistributed earnings of subsidiary 10,290 16,326 8,376 Equity in (distributed) undistributed earnings of subsidiary 4,749 (3,585 ) 7,371 Net Income $ 15,039 $ 12,741 $ 15,747
Condensed Statements of Cash Flows	Years Ended December 31, Condensed Statements of Cash Flows 2015 2014 2013 Cash provided by dividends received from subsidiary $ 11,000 $ 17,000 $ 9,000 Cash used for payment of dividends (8,068 ) (7,237 ) (7,248 ) Cash used for repurchase of stock (3,506 ) (1,508 ) — Cash used for acquisition of MainStreet (5,935 ) — — Proceeds from exercise of options and stock compensation 789 1,089 883 Other 311 (1,236 ) (2,051 ) Net increase (decrease) in cash $ (5,409 ) $ 8,108 $ 584

Supplemental Cash Flow Inform55

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2015
Supplemental Cash Flow Information [Abstract]
Schedule of supplemental disclosure of cash flow information	(dollars in thousands) For the Years ended December 31, 2015 2014 2013 Supplemental Schedule of Cash and Cash Equivalents: Cash and due from banks $ 19,352 $ 29,272 $ 19,808 Interest-bearing deposits in other banks 75,985 38,031 47,873 $ 95,337 $ 67,303 $ 67,681 Supplemental Disclosure of Cash Flow Information: Cash paid for: Interest on deposits and borrowed funds $ 5,836 $ 5,753 $ 6,728 Income taxes 3,090 4,371 4,530 Noncash investing and financing activities: Transfer of loans to other real estate owned 2,101 386 1,826 Unrealized gain (loss) on securities available for sale (2,652 ) 3,488 (9,571 ) Change in unfunded pension liability 538 (1,728 ) (1,761 ) Non-cash transactions related to acquisitions: Investment securities 18,507 — — Restricted stock 587 — — Loans 115,960 — — Premises and equipment 956 — — Deferred income taxes 2,794 — — Core deposit intangible 1,839 — — Other real estate owned, net 168 — — Bank owned life insurance 1,955 — — Other assets 1,049 — — Liabilities assumed: Demand, MMDA, and savings deposits 82,451 — — Time deposits 54,872 — — Other liabilities 3,076 — — Consideration: Issuance of common stock 20,483 — —

Accumulated Other Comprehensi56

Accumulated Other Comprehensive Income ("AOCI") (Tables)	12 Months Ended
	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Component of accumulated other comprehensive income (loss)	Changes in each component of accumulated other comprehensive income (loss) were as follows (dollars in thousands): Net Unrealized Gains (Losses) on Securities Adjustments Related to Pension Benefits Accumulated Other Comprehensive Income (Loss) Balance at Balance at December 31, 2012 $ 9,800 $ (2,203 ) $ 7,597 Net unrealized losses on securities available for sale, net of tax, $(3,282) (6,097 ) — (6,097 ) Reclassification adjustment for realized gains on securities, net of tax, $(67) (125 ) — (125 ) Change in unfunded pension liability, net of tax, $616 — 1,145 1,145 Balance at December 31, 2013 3,578 (1,058 ) 2,520 Net unrealized gains on securities available for sale, net of tax, $1,398 2,595 — 2,595 Reclassification adjustment for realized gains on securities, net of tax, $(177) (328 ) — (328 ) Change in unfunded pension liability, net of tax, $(605) — (1,123 ) (1,123 ) Balance at December 31, 2014 5,845 (2,181 ) 3,664 Net unrealized losses on securities available for sale, net of tax, $(626) (1,159 ) — (1,159 ) Reclassification adjustment for realized gains on securities, net of tax, $(303) (564 ) — (564 ) Change in unfunded pension liability, net of tax, $189 — 349 349 Balance at December 31, 2015 $ 4,122 $ (1,832 ) $ 2,290
Reclassification out of accumulated other comprehensive income	The following table provides information regarding reclassifications out of accumulated other comprehensive income (loss) (dollars in thousands): Reclassifications Out of Accumulated Other Comprehensive Income For the Three Years Ending December 31, 2015 Details about AOCI Components Amount Reclassified from AOCI Affected Line Item in the Statement of Where Net Income is Presented Years Ended December 31, 2015 2014 2013 Available for sale securities: Realized gain on sale of securities $ 867 $ 505 $ 192 Securities gains (losses), net (303 ) (177 ) (67 ) Income taxes Total reclassifications $ 564 $ 328 $ 125 Net of tax

Summary of Significant Accoun57

Summary of Significant Accounting Policies (Details)	1 Months Ended	12 Months Ended
	Jul. 31, 2011	Dec. 31, 2015USD ($)acquisition	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Jan. 01, 2015bank	Jul. 01, 2011bank
Cash and Cash Equivalents [Abstract]
Maximum maturity period of highly liquid investments		3 months
Interest-bearing Deposits in Other Banks [Abstract]
Maturity period of interest bearing deposits in other banks		1 year
Derivative Loan Commitments [Abstract]
Derivative loan commitments income		$ 0	$ 0	$ 0
Period of time between issuance and sale of loan commitment, minimum		30 days
Period of time between issuance and sale of loan commitment, maximum		60 days
Loans [Abstract]
Period to discontinued interest accrual on delinquent loans		90 days
Past due period when loans are charged off		120 days
Substandard and doubtful risk graded loan on unsecured basis		$ 100,000
Substandard and doubtful risk graded loan on secured basis		250,000
Troubled Debt Restructurings [Abstract]
Loans classified as TDR		$ 1,958,000	2,862,000
Finite-Lived Intangible Assets [Line Items]
Bank owned life insurance, number of acquisitions over the past decade | acquisition		3
Income Taxes [Abstract]
Percentage of tax benefit that is being realized for settlement (in hundredths)		50.00%
Unrecognized tax benefits		$ 0	0
Advertising and Marketing Costs [Abstract]
Advertising and marketing costs		$ 356,000	$ 453,000	$ 607,000
Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		3 years
Finite-Lived Intangible Assets [Line Items]
Amortization period of intangible		8 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		39 years
Finite-Lived Intangible Assets [Line Items]
Amortization period of intangible		10 years
MidCarolina [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization period of intangible	108 months
MidCarolina [Member] | North Carolina [Member]
Business Acquisition [Line Items]
Number of branches added upon completion of acquisition | bank						8
Software [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives		3 years
Franklin Community Bank [Member]
Business Acquisition [Line Items]
Number of banking offices | bank					3

Acquisition of MainStreet Ban58

Acquisition of MainStreet BankShares, Inc. - Narrative (Details)	Jan. 01, 2015USD ($)$ / sharesshares	Dec. 31, 2015USD ($)	Dec. 31, 2015USD ($)
Business Acquisition [Line Items]
Acquired loan portfolio, fair value discount		$ 6,376,000	$ 6,376,000
MainStreet BankShares, Inc. [Member]
Business Acquisition [Line Items]
Shares received by acquiree in exchange for common stock (in dollars per share) | $ / shares	$ 3.46
Shares received by acquiree in exchange for common stock (shares) | shares	0.482
Share exchange ratio on acquisition	0.643
Cash dividends received as part of acquisition	$ 6,000,000
Amount of loan used to fund merger	$ 0
Option awards acquired as part of merger (shares) | shares	43,086
Increase (decrease) in goodwill		(461,000)
Acquired loan portfolio, amount	$ 122,336,000
Acquired loan portfolio, fair value discount	6,376,000
Acquired loan portfolio, estimated fair value of performing portion	87,990,000
Investment portfolio acquired, fair value	18,507,000
Deferred income tax asset	2,794,000
Other real estate owned acquired	168,000
Premises and equipment acquired	956,000
Valuation adjustment due to acquisition	$ 290,000
Period valuation adjustment recognition period	12 months
Core deposit intangible asset acquired	$ 1,839,000
Amortization period of intangible asset acquired	10 years		120 months
Acquisition related expenses		1,998,000	$ 1,998,000
Loans [Member] | MainStreet BankShares, Inc. [Member]
Business Acquisition [Line Items]
Increase (decrease) in goodwill		(723,000)
Deferred Income Taxes [Member] | MainStreet BankShares, Inc. [Member]
Business Acquisition [Line Items]
Increase (decrease) in goodwill		$ 262,000

Acquisition of MainStreet Ban59

Acquisition of MainStreet BankShares, Inc. - Summary of Consideration Paid and Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jan. 01, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2015
Consideration Paid:
Cash paid to Shareholders		$ 5,935	$ 0	$ 0
Liabilities assumed:
Goodwill resulting from merger with MainStreet		43,872	$ 39,043	$ 39,043
MainStreet BankShares, Inc. [Member]
Business Acquisition [Line Items]
Number of common stock shares issued in connection with merger	825,586
Consideration Paid:
Common shares issued (825,586)	$ 20,483
Cash paid to Shareholders	5,935
Value of consideration	26,418
Assets acquired:
Cash and cash equivalents	18,173
Investment securities	18,507
Restricted stock	587
Loans	115,960
Premises and equipment	956
Deferred income taxes	2,794
Core deposit intangible	1,839	1,839
Other real estate owned	168
Bank owned life insurance	1,955
Accrued interest receivable and other assets	1,049
Total assets	161,988
Liabilities assumed:
Deposits	137,323
Accrued interest payable and other liabilities	3,076
Total liabilities	140,399
Net assets acquired	21,589
Goodwill resulting from merger with MainStreet	$ 4,829	$ 4,829			$ 5,290

Acquisition of MainStreet Ban60

Acquisition of MainStreet BankShares, Inc. - Change in Goodwill (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2015USD ($)
Goodwill [Roll Forward]
Goodwill, ending	$ 43,872
MainStreet BankShares, Inc. [Member]
Goodwill [Roll Forward]
Goodwill, beginning	5,290
Effect of adjustments	(461)
Goodwill, ending	4,829
Loans [Member] | MainStreet BankShares, Inc. [Member]
Goodwill [Roll Forward]
Effect of adjustments	(723)
Deferred Income Taxes [Member] | MainStreet BankShares, Inc. [Member]
Goodwill [Roll Forward]
Effect of adjustments	$ 262

Acquisition of MainStreet Ban61

Acquisition of MainStreet BankShares, Inc. - Acquired Loans (Details) - USD ($) $ in Thousands	Jan. 01, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Interest component of expected cash flows (accretable discount)		$ 7,140	$ 0	$ 0
Fair value of acquired impaired loans accounted for under FASB ASC 310-30		$ 33,878	$ 14,933
MainStreet BankShares, Inc. [Member]
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition	$ 33,066
Contractual cash flows not expected to be collected (nonaccretable difference)	2,044
Expected cash flows at acquisition	35,110
Interest component of expected cash flows (accretable discount)	7,140
Fair value of acquired impaired loans accounted for under FASB ASC 310-30	$ 27,970

Acquisition of MainStreet Ban62

Acquisition of MainStreet BankShares, Inc. - Pro Forma Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Net interest income	$ 48,522	$ 53,294
Provision for loan losses	458	437
Non-interest income	12,081	10,195
Non-interest expense	40,148	39,011
Income Taxes	5,999	7,212
Net income	$ 13,998	$ 16,829

Restrictions on Cash (Details)

Restrictions on Cash (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents reserve requirement	$ 0	$ 0
Federal Deposit Insurance Corporation deposit, in excess of insurance limits	$ 213,000

Securities - Narrative (Details

Securities - Narrative (Details)	12 Months Ended
	Dec. 31, 2015USD ($)Security	Dec. 31, 2014USD ($)
Schedule of Available for Sale Securities and Held to Maturity Securities [Line Items]
Securities pledged to secure public deposits, repurchase agreements and other | $	$ 173,146,000	$ 168,965,000
FHLB letters of credit used as additional collateral amount | $	70,700,000	70,000,000
Federal Reserve Bank Stock | $	3,535,000	2,742,000
Investment in FHLB stock | $	1,777,000	1,625,000
Other-than-temporary impairment losses recognized | $	$ 0	$ 0
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available for Sale Securities and Held to Maturity Securities [Line Items]
Number of available for sale securities in unrealized loss positions | Security	18
Residential Mortgage Backed Securities [Member]
Schedule of Available for Sale Securities and Held to Maturity Securities [Line Items]
Number of available for sale securities in unrealized loss positions | Security	34
Collateralized Mortgage Obligations [Member]
Schedule of Available for Sale Securities and Held to Maturity Securities [Line Items]
Number of available for sale securities in unrealized loss positions | Security	1
State and municipal [Member]
Schedule of Available for Sale Securities and Held to Maturity Securities [Line Items]
Number of available for sale securities in unrealized loss positions | Security	17
Corporate [Member]
Schedule of Available for Sale Securities and Held to Maturity Securities [Line Items]
Number of available for sale securities in unrealized loss positions | Security	6
American National Bank and Trust Company [Member]
Schedule of Available for Sale Securities and Held to Maturity Securities [Line Items]
Federal Home Loan Bank stock requirement, percentage of outstanding borrowings	4.50%
Federal Reserve Bank stock, stock requirement, percentage of outstanding capital	3.00%
Federal Reserve Bank stock, stock requirement, percentage subject to call	3.00%

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	$ 334,008	$ 335,723
Unrealized Gains	7,142	9,352
Unrealized Losses	801	359
Fair Value	340,349	344,716
Federal agencies and GSEs [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	81,601	81,958
Unrealized Gains	170	252
Unrealized Losses	319	104
Fair Value	81,452	82,106
Mortgage-backed and CMOs [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	70,520	56,289
Unrealized Gains	799	1,248
Unrealized Losses	389	112
Fair Value	70,930	57,425
State and municipal [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	170,268	188,060
Unrealized Gains	5,659	7,523
Unrealized Losses	36	90
Fair Value	175,891	195,493
Corporate [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	10,619	8,416
Unrealized Gains	28	16
Unrealized Losses	57	53
Fair Value	10,590	8,379
Equity securities [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	1,000	1,000
Unrealized Gains	486	313
Unrealized Losses	0	0
Fair Value	$ 1,486	$ 1,313

Securities - Amortized Cost a66

Securities - Amortized Cost and Estimated Fair Value by Maturity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Amortized Cost
Due in one year or less	$ 28,046
Due after one year through five years	119,404
Due after five years through ten years	91,445
Due after ten years	23,593
Amortized Cost	334,008
Fair Value
Due in one year or less	28,134
Due after one year through five years	121,825
Due after five years through ten years	93,918
Due after ten years	24,056
Fair Value	340,349
Gross realized gains and losses [Abstract]
Realized gains	871	$ 507	$ 229
Realized losses	(4)	(2)	(37)
Other-than-temporary impairment	0	$ 0	$ 0
Mortgage-backed and CMOs [Member]
Amortized Cost
Mortgage-backed and CMOs	70,520
Fair Value
Mortgage-backed and CMOs	70,930
Equity securities [Member]
Amortized Cost
Equity securities	1,000
Fair Value
Equity securities	$ 1,486

Securities - Summary of Securit

Securities - Summary of Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	$ 113,726	$ 61,735
Less than 12 Months, Fair Value	109,381	40,729
12 Months or More, Fair Value	4,345	21,006
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	801	359
Less than 12 Months, Unrealized Loss	728	112
12 Months or More, Unrealized Loss	73	247
Federal agencies and GSEs [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	57,711	28,979
Less than 12 Months, Fair Value	57,711	21,449
12 Months or More, Fair Value	0	7,530
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	319	104
Less than 12 Months, Unrealized Loss	319	35
12 Months or More, Unrealized Loss	0	69
Mortgage-backed and CMOs [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	37,368	7,182
Less than 12 Months, Fair Value	35,424	1,171
12 Months or More, Fair Value	1,944	6,011
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	389	112
Less than 12 Months, Unrealized Loss	346	13
12 Months or More, Unrealized Loss	43	99
State and municipal [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	13,540	20,542
Less than 12 Months, Fair Value	12,716	15,836
12 Months or More, Fair Value	824	4,706
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	36	90
Less than 12 Months, Unrealized Loss	34	60
12 Months or More, Unrealized Loss	2	30
Corporate [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value	5,107	5,032
Less than 12 Months, Fair Value	3,530	2,273
12 Months or More, Fair Value	1,577	2,759
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Unrealized Loss	57	53
Less than 12 Months, Unrealized Loss	29	4
12 Months or More, Unrealized Loss	$ 28	$ 49

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 1,005,525	$ 840,925
Net deferred loan costs (fees)	(575)	(435)
Overdraft deposits	82	129
Outstanding principal balance and the carrying amount of loan acquired [Abstract]
Outstanding principal balance	145,380	84,892
Carrying amount	135,254	78,111
Outstanding principal balance and the carrying amount of loan acquired, impaired [Abstract]
Outstanding principal balance	40,951	18,357
Carrying amount	33,878	14,933
Changes in the accretable discount on acquired loans [Abstract]
Balance at January 1	1,440	2,046	$ 2,165
Additions from merger with MainStreet	7,140	0	0
Accretion	(4,313)	(1,185)	(2,635)
Reclassification from nonaccretable difference	0	579	2,516
Other changes, net	3,032	0	0
Balance at December 31	7,299	1,440	$ 2,046
Construction and land development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	72,968	50,863
Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	430,186	391,472
Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	220,434	175,293
Home equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	98,449	91,075
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	177,481	126,981
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 6,007	$ 5,241

Loans - Receivables Past Due (D

Loans - Receivables Past Due (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Analysis by portfolio segment of the entity's past due loans [Abstract]
30- 59 Days Past Due	$ 1,378	$ 1,029
60-89 Days Past Due	593	861
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	5,205	4,112
Total Past Due	7,176	6,002
Current	998,349	834,923
Total Loans	1,005,525	840,925
Construction and land development [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	72,968	50,863
Commercial real estate [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	430,186	391,472
Residential [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	220,434	175,293
Home equity [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	98,449	91,075
Commercial [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
30- 59 Days Past Due	137	114
60-89 Days Past Due	0	165
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	90	0
Total Past Due	227	279
Current	177,254	126,702
Total Loans	177,481	126,981
Commercial real estate [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	503,154	442,335
Commercial real estate [Member] | Construction and land development [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
30- 59 Days Past Due	0	44
60-89 Days Past Due	0	269
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	258	279
Total Past Due	258	592
Current	72,710	50,271
Total Loans	72,968	50,863
Commercial real estate [Member] | Commercial real estate [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
30- 59 Days Past Due	135	257
60-89 Days Past Due	182	0
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	2,497	3,010
Total Past Due	2,814	3,267
Current	427,372	388,205
Total Loans	430,186	391,472
Residential real estate [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	318,883	266,368
Residential real estate [Member] | Residential [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
30- 59 Days Past Due	913	390
60-89 Days Past Due	398	325
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	1,731	560
Total Past Due	3,042	1,275
Current	217,392	174,018
Total Loans	220,434	175,293
Residential real estate [Member] | Home equity [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
30- 59 Days Past Due	140	223
60-89 Days Past Due	12	60
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	620	262
Total Past Due	772	545
Current	97,677	90,530
Total Loans	98,449	91,075
Consumer [Member]
Analysis by portfolio segment of the entity's past due loans [Abstract]
30- 59 Days Past Due	53	1
60-89 Days Past Due	1	42
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	9	1
Total Past Due	63	44
Current	5,944	5,197
Total Loans	$ 6,007	$ 5,241

Loans - Impaired Loan (Details)

Loans - Impaired Loan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	$ 1,724	$ 2,667
Impaired loan, with an related allowance, recorded investment	2,983	1,870
Impaired loan, total, recorded investment	4,707	4,537
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	1,725	2,989
Impaired loan, with an related allowance, unpaid principal balance	3,026	2,018
Impaired loan, total, unpaid principal balance	4,751	5,007
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	35	165
Impaired loan, total, related allowance	35	165
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	2,216	3,345
Impaired loan, with related allowance, average recorded investment	2,387	1,911
Impaired loan, total, average recorded investment	4,603	5,256
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	1	9
Impaired loan, with related allowance, interest income recognized	65	43
Impaired loan, total, interest income recognized	66	52
Commercial [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	4	7
Impaired loan, with an related allowance, recorded investment	91	0
Impaired loan, total, recorded investment	95	7
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	4	7
Impaired loan, with an related allowance, unpaid principal balance	91	0
Impaired loan, total, unpaid principal balance	95	7
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	0	0
Impaired loan, total, related allowance	0	0
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	47	12
Impaired loan, with related allowance, average recorded investment	99	0
Impaired loan, total, average recorded investment	146	12
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	1
Impaired loan, with related allowance, interest income recognized	0	0
Impaired loan, total, interest income recognized	0	1
Commercial real estate [Member] | Construction and land development [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	205	280
Impaired loan, with an related allowance, recorded investment	448	576
Impaired loan, total, recorded investment	653	856
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	205	325
Impaired loan, with an related allowance, unpaid principal balance	449	577
Impaired loan, total, unpaid principal balance	654	902
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	6	12
Impaired loan, total, related allowance	6	12
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	220	448
Impaired loan, with related allowance, average recorded investment	563	593
Impaired loan, total, average recorded investment	783	1,041
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	0
Impaired loan, with related allowance, interest income recognized	26	34
Impaired loan, total, interest income recognized	26	34
Commercial real estate [Member] | Commercial real estate [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	1,202	1,520
Impaired loan, with an related allowance, recorded investment	390	1,275
Impaired loan, total, recorded investment	1,592	2,795
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	1,206	1,797
Impaired loan, with an related allowance, unpaid principal balance	391	1,422
Impaired loan, total, unpaid principal balance	1,597	3,219
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	3	149
Impaired loan, total, related allowance	3	149
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	1,504	1,844
Impaired loan, with related allowance, average recorded investment	353	1,297
Impaired loan, total, average recorded investment	1,857	3,141
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	1	0
Impaired loan, with related allowance, interest income recognized	17	8
Impaired loan, total, interest income recognized	18	8
Residential real estate [Member] | Residential [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	127	603
Impaired loan, with an related allowance, recorded investment	1,649	4
Impaired loan, total, recorded investment	1,776	607
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	124	603
Impaired loan, with an related allowance, unpaid principal balance	1,690	4
Impaired loan, total, unpaid principal balance	1,814	607
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	0	1
Impaired loan, total, related allowance	0	1
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	126	723
Impaired loan, with related allowance, average recorded investment	1,034	4
Impaired loan, total, average recorded investment	1,160	727
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	8
Impaired loan, with related allowance, interest income recognized	22	0
Impaired loan, total, interest income recognized	22	8
Residential real estate [Member] | Home equity [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	173	256
Impaired loan, with an related allowance, recorded investment	397	0
Impaired loan, total, recorded investment	570	256
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	173	256
Impaired loan, with an related allowance, unpaid principal balance	396	0
Impaired loan, total, unpaid principal balance	569	256
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	25	0
Impaired loan, total, related allowance	25	0
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	305	316
Impaired loan, with related allowance, average recorded investment	327	0
Impaired loan, total, average recorded investment	632	316
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	0
Impaired loan, with related allowance, interest income recognized	0	0
Impaired loan, total, interest income recognized	0	0
Consumer [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	13	1
Impaired loan, with an related allowance, recorded investment	8	15
Impaired loan, total, recorded investment	21	16
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	13	1
Impaired loan, with an related allowance, unpaid principal balance	9	15
Impaired loan, total, unpaid principal balance	22	16
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	1	3
Impaired loan, total, related allowance	1	3
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	14	2
Impaired loan, with related allowance, average recorded investment	11	17
Impaired loan, total, average recorded investment	25	19
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	0
Impaired loan, with related allowance, interest income recognized	0	1
Impaired loan, total, interest income recognized	$ 0	$ 1

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract	Dec. 31, 2013USD ($)contract
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts | contract	8	5	1
Pre-Modification Outstanding Recorded Investment	$ 1,097	$ 872	$ 1,190
Post-Modification Outstanding Recorded Investment	1,082	869	1,190
Type of Modification, Rate	105	0	0
Type of Modification, Structure	977	869	1,190
ALLL Impact	0	$ 1	$ 137
Loans in the process of foreclosure	$ 53
Commercial [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts | contract	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0	0
Type of Modification, Rate	0	0	0
Type of Modification, Structure	0	0	0
ALLL Impact	$ 0	$ 0	$ 0
Commercial real estate [Member] | Commercial real estate [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts | contract	3	2	1
Pre-Modification Outstanding Recorded Investment	$ 394	$ 743	$ 1,190
Post-Modification Outstanding Recorded Investment	394	737	1,190
Type of Modification, Rate	0	0	0
Type of Modification, Structure	394	737	1,190
ALLL Impact	$ 0	$ 0	$ 137
Residential real estate [Member] | Home equity [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts | contract	1	1	0
Pre-Modification Outstanding Recorded Investment	$ 107	$ 8	$ 0
Post-Modification Outstanding Recorded Investment	105	8	0
Type of Modification, Rate	105	0	0
Type of Modification, Structure	0	8	0
ALLL Impact	$ 0	$ 0	$ 0
Residential real estate [Member] | Residential real estate [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts | contract	4	2	0
Pre-Modification Outstanding Recorded Investment	$ 596	$ 121	$ 0
Post-Modification Outstanding Recorded Investment	583	124	0
Type of Modification, Rate	0	0	0
Type of Modification, Structure	583	124	0
ALLL Impact	$ 0	$ 1	$ 0
Consumer [Member]
Loans modified as troubled debt restructurings included in impaired loan balances [Abstract]
Number of Contracts | contract	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	0	0	0
Type of Modification, Rate	0	0	0
Type of Modification, Structure	0	0	0
ALLL Impact	$ 0	$ 0	$ 0

Loans - Credit exposure (Detail

Loans - Credit exposure (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 1,005,525	$ 840,925
Threshold limit to consider loan as nonperforming	90 days
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 177,481	126,981
Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	72,968	50,863
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	430,186	391,472
Residential real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	220,434	175,293
Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	98,449	91,075
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,007	5,241
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	175,963	125,405
Pass [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	68,853	45,534
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	418,719	382,604
Pass [Member] | Residential real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	200,008	165,367
Pass [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	96,142	88,646
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,364	1,569
Special Mention [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,210	569
Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,860	4,889
Special Mention [Member] | Residential real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	14,638	6,709
Special Mention [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,314	1,801
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	154	7
Substandard [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,905	4,760
Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,607	3,979
Substandard [Member] | Residential real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,788	3,217
Substandard [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	993	628
Doubtful [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Residential real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Performing [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,999	5,240
Nonperforming [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 8	$ 1

Allowance for Loan Losses and73

Allowance for Loan Losses and Reserve for Unfunded Lending Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	$ 12,427	$ 12,600	$ 12,118
Provision for loan losses	950	400	294
Charge-offs	(1,200)	(964)	(837)
Recoveries	424	391	1,025
Balance, end of year	12,601	12,427	12,600
Reserve for Unfunded Lending Commitments [Abstract]
Balance, beginning of year	163	210	201
Provision for (recovery) unfunded commitments	21	(47)	9
Charge-offs (recovery of)	0	0	0
Balance, end of year	$ 184	$ 163	$ 210

Allowance for Loan Losses and74

Allowance for Loan Losses and Reserve for Unfunded Lending Commitments - Allowance by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	$ 12,427	$ 12,600	$ 12,118
Charge-offs	(1,200)	(964)	(837)
Recoveries	424	391	1,025
Provision	950	400	294
Balance, end of year	12,601	12,427	12,600
Individually evaluated for impairment				$ 35	$ 165
Collectively evaluated for impairment				12,159	11,716
Acquired impaired loans				407	546
Total	12,427	12,600	12,118	12,601	12,427
Individually evaluated for impairment				4,707	4,537
Collectively evaluated for impairment				966,940	821,455
Acquired impaired loans				33,878	14,933
Total Loans				1,005,525	840,925
Commercial [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	1,818	1,810
Charge-offs	(175)	(101)
Recoveries	32	51
Provision	390	58
Balance, end of year	2,065	1,818	1,810
Individually evaluated for impairment				0	0
Collectively evaluated for impairment				2,065	1,815
Acquired impaired loans				0	3
Total	1,818	1,810	1,810	2,065	1,818
Individually evaluated for impairment				95	7
Collectively evaluated for impairment				176,798	126,774
Acquired impaired loans				588	200
Total Loans				177,481	126,981
Commercial real estate [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	6,814	6,819
Charge-offs	(482)	(510)
Recoveries	124	66
Provision	474	439
Balance, end of year	6,930	6,814	6,819
Individually evaluated for impairment				9	161
Collectively evaluated for impairment				6,750	6,400
Acquired impaired loans				171	253
Total	6,814	6,819	6,819	6,930	6,814
Individually evaluated for impairment				2,245	3,651
Collectively evaluated for impairment				487,177	429,660
Acquired impaired loans				13,732	9,024
Total Loans				503,154	442,335
Residential real estate [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	3,715	3,690
Charge-offs	(323)	(258)
Recoveries	139	191
Provision	15	92
Balance, end of year	3,546	3,715	3,690
Individually evaluated for impairment				26	1
Collectively evaluated for impairment				3,284	3,424
Acquired impaired loans				236	290
Total	3,715	3,690	3,690	3,546	3,715
Individually evaluated for impairment				2,346	863
Collectively evaluated for impairment				297,281	259,796
Acquired impaired loans				19,256	5,709
Total Loans				318,883	266,368
Consumer [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	80	99
Charge-offs	(220)	(95)
Recoveries	129	83
Provision	71	(7)
Balance, end of year	60	80	99
Individually evaluated for impairment				0	3
Collectively evaluated for impairment				60	77
Acquired impaired loans				0	0
Total	80	99	99	60	80
Individually evaluated for impairment				21	16
Collectively evaluated for impairment				5,684	5,225
Acquired impaired loans				302	0
Total Loans				6,007	5,241
Unallocated [Member]
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	0	182
Charge-offs	0	0
Recoveries	0	0
Provision	0	(182)
Balance, end of year	0	0	182
Individually evaluated for impairment				0	0
Collectively evaluated for impairment				0	0
Acquired impaired loans				0	0
Total	$ 0	$ 182	$ 182	0	0
Individually evaluated for impairment				0	0
Collectively evaluated for impairment				0	0
Acquired impaired loans				0	0
Total Loans				$ 0	$ 0

Premises and Equipment - Narrat

Premises and Equipment - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 1,833	$ 1,688	$ 1,734
Rent expense	$ 990	$ 633	$ 629

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Major classifications of premises and equipment [Abstract]
Premises and equipment, gross	$ 49,643	$ 48,897
Accumulated depreciation	(26,076)	(25,872)
Premises and equipment, net	23,567	23,025
Land [Member]
Major classifications of premises and equipment [Abstract]
Premises and equipment, gross	6,077	5,794
Buildings [Member]
Major classifications of premises and equipment [Abstract]
Premises and equipment, gross	23,481	22,963
Leasehold improvements [Member]
Major classifications of premises and equipment [Abstract]
Premises and equipment, gross	1,399	1,418
Furniture and equipment [Member]
Major classifications of premises and equipment [Abstract]
Premises and equipment, gross	$ 18,686	$ 18,722

Premises and Equipment - Minimu

Premises and Equipment - Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,016	$ 882
2,017	810
2,018	624
2,019	108
2,020	30
Future minimum payments due	$ 2,454

Goodwill and Other Intangible78

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2015	Jul. 31, 2011	Apr. 30, 2006	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense				$ 1,201	$ 1,114	$ 1,501
Community First [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Core deposit intangible			$ 3,112
Amortization period of intangible			99 months
MidCarolina [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Core deposit intangible		$ 6,556
Amortization period of intangible		108 months
MainStreet BankShares, Inc. [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Core deposit intangible	$ 1,839			$ 1,839
Amortization period of intangible	10 years			120 months

Goodwill and Other Intangible79

Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill
Goodwill, beginning	$ 39,043	$ 39,043
Additions	4,829
Amortization	0
Impairment	0
Goodwill, ending	43,872	39,043	$ 39,043
Intangibles
Balance at December 31, 2014	2,045
Additions	1,839
Amortization	(1,201)	(1,114)	$ (1,501)
Impairment	0
Balance at December 31, 2015	$ 2,683	$ 2,045

Goodwill and Other Intangible80

Goodwill and Other Intangible Assets - Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Carrying Value, Core deposit intangibles	$ 11,808	$ 9,969
Accumulated Amortization, Core deposit intangibles	(9,125)	(7,924)
Net Carrying Value, Core Deposits	2,683	2,045
Gross Carrying Value, Goodwill	43,872	39,043
Accumulated Amortization, Goodwill	0	0
Net Carrying Value, Goodwill	$ 43,872	$ 39,043	$ 39,043

Goodwill and Other Intangible81

Goodwill and Other Intangible Assets - Estimated Future Amortization Expense of Core Deposit Intangibles (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,016	$ 964
2,017	528
2,018	265
2,019	219
2,020	207
2021 and after	500
Total	$ 2,683	$ 2,045

Deposits (Details)

Deposits (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Deposits [Abstract]
Aggregate amount of time deposits, $250,000 or More	$ 132,686,000	$ 119,225,000
Scheduled maturities of certificates of deposits [Abstract]
2,016	216,638,000
2,017	78,863,000
2,018	45,279,000
2,019	24,945,000
2,020	31,581,000
2021 and after	4,000
Time Deposits	397,310,000
Brokered time deposits	0	0
Time deposits through CDARs program	$ 23,633,000	$ 22,255,000

Short-term Borrowings (Details)

Short-term Borrowings (Details)	Dec. 31, 2015USD ($)bank	Dec. 31, 2014USD ($)
Short-term Debt [Abstract]
Federal funds line of credit, number of banks | bank	2
Federal funds line of credit, amount per agreement	$ 15,000,000
Customer repurchase agreements	$ 40,611,000	$ 53,480,000
Customer repurchase agreements, Weighted Average Rate	0.02%	0.02%

Long-term Borrowings (Details)

Long-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Long-term Debt, Unclassified [Abstract]
Percentage of entity's assets equal to line of credit facility (in hundredths)	30.00%
Collateral pledged under blanket floating lien agreement	$ 424,053
Long term advances with federal home loan bank [Abstract]
Advance Amount	9,958	$ 9,935
Valuation allowance, net, related to federal home loan bank, advances	42
Public deposit accounts	$ 149,449
November 2017 [Member]
Long term advances with federal home loan bank [Abstract]
Maturity Date	Nov. 30, 2017	Nov. 30, 2017
Advance Amount	$ 9,958	$ 9,935
Weighted Average Rate	2.98%	2.98%
Federal Home Loan Bank Advances [Member]
Long term advances with federal home loan bank [Abstract]
Collateral for deposits	$ 70,700
US government and agency securities [Member]
Long term advances with federal home loan bank [Abstract]
Collateral for deposits	$ 122,384

Junior Subordinated Debt (Detai

Junior Subordinated Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2011	Jun. 30, 2011	Apr. 07, 2006	Dec. 31, 2015	Jul. 01, 2011
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Proceeds from issuance of trust preferred securities			$ 20,000
Proceeds from issuance of common securities	$ 619
Junior subordinated debenture	$ 20,619
Trust Preferred Securities [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Maturity Date			Jun. 30, 2036
Fixed interest rate of trust preferred securities (in hundredths)			6.66%
Reference rate, trust preferred securities	three-month LIBOR
Trust preferred securities, basis spread on variable rate (in hundredths)	1.35%
Number of consecutive quarterly periods for deferral of distributions on Trust Preferred Securities		5 years
Mid Carolina Trust [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Junior subordinated debenture					$ 8,764
Equity method investments				$ 264
AMNB Trust I [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Equity method investments				$ 619

Junior Subordinated Debt - Outs

Junior Subordinated Debt - Outstanding Payables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2011	Jul. 01, 2011
Debt Instrument [Line Items]
Principal Amount			$ 20,619
MidCarolina I [Member]
Debt Instrument [Line Items]
Fair value marks associated with junior subordinated debenture	$ 946			$ 1,197
MidCarolina II [Member]
Debt Instrument [Line Items]
Fair value marks associated with junior subordinated debenture	815			$ 1,021
Junior Subordinated Debt Securities [Member]
Debt Instrument [Line Items]
Principal Amount	$ 27,622	$ 27,521
Junior Subordinated Debt Securities [Member] | AMNB Trust I [Member]
Debt Instrument [Line Items]
Date Issued	Apr. 7, 2006
Interest Rate	Libor plus 1.35%
Variable Rate Basis	Libor plus	Libor plus
Basis Spread on Variable Rate (in hundredths)	1.35%	1.35%
Maturity Date	Jun. 30, 2036
Principal Amount	$ 20,619	$ 20,619
Junior Subordinated Debt Securities [Member] | MidCarolina I [Member]
Debt Instrument [Line Items]
Date Issued	Oct. 29, 2002
Interest Rate	Libor plus 3.45%
Variable Rate Basis	Libor plus	Libor plus
Basis Spread on Variable Rate (in hundredths)	3.45%	3.45%
Maturity Date	Nov. 7, 2032
Principal Amount	$ 4,209	$ 4,154
Junior Subordinated Debt Securities [Member] | MidCarolina II [Member]
Debt Instrument [Line Items]
Date Issued	Dec. 3, 2003
Interest Rate	Libor plus 3.45%
Variable Rate Basis	Libor plus	Libor plus
Basis Spread on Variable Rate (in hundredths)	3.45%	3.45%
Maturity Date	Oct. 7, 2033
Principal Amount	$ 2,794	$ 2,748

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details)	12 Months Ended
	Dec. 31, 2015USD ($)directorshares	Dec. 31, 2014USD ($)shares	Dec. 31, 2013USD ($)shares	Apr. 22, 2008shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock authorizes for issuance (in shares) | shares				500,000
Total proceeds of the in-the-money options exercised	$ 789,000	$ 442,000	$ 309,000
Total intrinsic value of options exercised	220,000	178,000	75,000
Unrecognized compensation expense	0	0	0
Compensation expense related to stock options	$ 0	$ 0	$ 0
Stock options granted during period (in shares) | shares	0	0	0
Regular quarterly retainer director could receive in cash	$ 1,000
Regular quarterly retainer if restricted stock vested	1,563
Monthly meeting fees a director could receive in cash	600
Monthly meeting fees a director could receive if restricted stock vested	$ 750
Number of directors elected to receive stock in lieu of cash | director	13
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum vesting period of granted restricted stock	36 months
Unrecognized compensation cost	$ 340,000	$ 327,000	$ 337,000
Share based compensation expense	$ 322,000	$ 342,000	$ 292,000
Number of shares issued (in shares) | shares	11,228	13,147	12,711
Recognized share based compensation expense	$ 275,000	$ 298,000	$ 282,000
Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period for recognition of unrecognized compensation cost	12 months
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period for recognition of unrecognized compensation cost	30 months
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued as payment for deferred compensation | shares	4,158
Market value of shares issued as payment of deferred compensation	$ 95,000

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Option Shares
Outstanding at December 31, 2014 (shares)	110,947
Replacement stock options (shares)	43,086
Granted (shares)	0	0	0
Exercised (shares)	42,680	26,000	17,475
Forfeited (shares)	4,090
Expired (shares)	39,392
Outstanding at December 31, 2015 (shares)	67,871	110,947
Exercisable (shares)	67,871
Weighted Average Exercise Price
Outstanding at December 31, 2014 (in dollars per share)	$ 26.08
Replacement stock options (in dollars per share)	20.02
Granted (in dollars per share)	0
Exercised (in dollars per share)	18.49
Forfeited (in dollars per share)	19.03
Expired (in dollars per share)	31.18
Outstanding at December 31, 2015 (in dollars per share)	24.47	$ 26.08
Exercisable (in dollars per share)	$ 24.47
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual, Outstanding	2 years 7 months 10 days
Weighted Average Remaining Contractual, Exercisable	2 years 7 months 10 days
Aggregate Intrinsic Value, Outstanding	$ 118
Aggregate Intrinsic Value, Exercisable	$ 118

Stock-Based Compensation - Su89

Stock-Based Compensation - Summary of Options Outstanding and Exercisable by Price Range (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Outstanding Options (shares) | shares	67,871
Weighted- Average Remaining Contractual Life	2 years 7 months 10 days
Weighted- Average Exercise Price (in dollars per share)	$ 24.47
$ 20.01 to $ 25.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	20.01
Exercise price range, maximum (in dollars per share)	$ 25
Number of Outstanding Options (shares) | shares	37,300
Weighted- Average Remaining Contractual Life	2 years 10 months 21 days
Weighted- Average Exercise Price (in dollars per share)	$ 22.45
$ 25.01 to $ 30.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	25.01
Exercise price range, maximum (in dollars per share)	$ 30
Number of Outstanding Options (shares) | shares	27,601
Weighted- Average Remaining Contractual Life	2 years 4 months 2 days
Weighted- Average Exercise Price (in dollars per share)	$ 25.84
$ 30.01 to $ 41.67 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, minimum (in dollars per share)	30.01
Exercise price range, maximum (in dollars per share)	$ 41.67
Number of Outstanding Options (shares) | shares	2,970
Weighted- Average Remaining Contractual Life	1 year 8 months 12 days
Weighted- Average Exercise Price (in dollars per share)	$ 37.04

Stock-Based Compensation - Su90

Stock-Based Compensation - Summary of Restricted Stock (Details) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Shares
Nonvested at January 1, 2015 (shares) | shares	41,562
Granted (shares) | shares	19,155
Vested (shares) | shares	15,536
Forfeited (shares) | shares	3,618
Nonvested at December 31, 2015 (shares) | shares	41,563
Weighted Average Grant Date Value
Nonvested at January 1, 2015 (in dollars per share) | $ / shares	$ 21.39
Granted (in dollars per share) | $ / shares	21.81
Vested (in dollars per share) | $ / shares	19.51
Forfeited (in dollars per share) | $ / shares	22.89
Nonvested at December 31, 2015 (in dollars per share) | $ / shares	$ 22.15

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for loan losses	$ 4,410	$ 4,350
Nonaccrual loan interest	576	449
Other real estate owned valuation allowance	360	1,384
Deferred compensation	1,353	641
Loans	4,641	3,953
Other	840	725
Total deferred tax assets	12,180	11,502
Deferred tax liabilities:
Depreciation	700	759
Accretion of discounts on securities	320	274
Core deposit intangibles	939	716
Net unrealized gains on securities	2,219	3,148
Prepaid pension expense	52	83
Trust preferred fair value adjustment	616	652
Other	196	208
Total deferred tax liabilities	5,042	5,840
Net deferred tax assets	7,138	$ 5,662
Acquired loan portfolio, fair value adjustment	$ 6,376

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current tax expense	$ 4,279	$ 5,153	$ 4,030
Deferred tax expense	1,741	49	2,024
Total income tax expense	$ 6,020	$ 5,202	$ 6,054

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Expected federal tax expense	$ 7,371	$ 6,280	$ 7,630
Nondeductible interest expense	78	63	77
Tax-exempt interest	(1,338)	(1,370)	(1,491)
State income taxes	222	405	254
Other, net	(313)	(176)	(416)
Total income tax expense	$ 6,020	$ 5,202	$ 6,054

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares [Abstract]
Basic earnings per share (in shares)	8,680,502	7,867,198	7,872,870
Effect of dilutive securities - stock options (in shares)	7,948	10,378	11,691
Diluted earnings per share (in shares)	8,688,450	7,877,576	7,884,561
Per Share Amount [Abstract]
Basic earnings per share (in dollars per share)	$ 1.73	$ 1.62	$ 2
Effect of dilutive securities - stock options (in dollars per share)	0	0	0
Diluted earnings per share (in dollars per share)	$ 1.73	$ 1.62	$ 2
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options on common stock not included in computing diluted earnings per share (in shares)	66,238	117,843	161,831

Off-Balance Sheet Activities (D

Off-Balance Sheet Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan repurchase requirement, number of days past due	90 days
Loan repurchase requirement, number of days following sale	180 days
Commitments to extend credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	$ 301,360	$ 190,413
Standby letters of credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	4,286	3,333
Mortgage loan rate lock commitments [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	5,365	$ 3,372
Loans held for sale [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	$ 3,266

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Activity of loans to related parties [Roll Forward]
Balance at December 31, 2014	$ 15,532
Additions	5,366
Repayments	(4,560)
Balance at December 31, 2015	16,338
Related party deposits	$ 17,163	$ 22,088

Employee Benefit Plans - Narrat

Employee Benefit Plans - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan with individual requisite age	21 years
Defined benefit plan with individual requisite service period	1 year
Accumulated benefit obligation	$ 8,453,000	$ 10,710,000	$ 8,996,000
Maximum percentage of limiting equities	5.00%
Employer matching contribution, service requirement	1 year
Employee benefits expense	$ 602,000	521,000	542,000
Period of deferred compensation agreements	10 years
Deferred compensation liability	$ 442,000	509,000
Deferred compensation arrangement expense	8,000	10,000	13,000
Profit sharing and incentive arrangements expense	559,000	$ 851,000	$ 890,000
Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred compensation arrangement annual payments	25,000
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Deferred compensation arrangement annual payments	$ 50,000

Employee Benefit Plans - Define

Employee Benefit Plans - Defined Benefit Plan Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Change in Benefit Obligation:
Projected benefit obligation at beginning of year	$ 10,710	$ 8,996	$ 10,931
Service cost	0	0	0
Interest cost	297	304	288
Actuarial (gain) loss	(100)	1,606	(201)
Benefits paid	(2,454)	(196)	(2,022)
Projected benefit obligation at end of year	8,453	10,710	8,996
Change in Plan Assets:
Fair value of plan assets at beginning of year	10,949	10,870	11,689
Actual return on plan assets	(67)	275	1,203
Benefits paid	(2,454)	(196)	(2,022)
Fair value of plan assets at end of year	8,428	10,949	10,870
Funded Status at End of Year	(25)	239	1,874
Amounts Recognized in the Consolidated Balance Sheets
Other assets (liabilities)	(25)	239	1,874
Amounts Recognized in Accumulated Other Comprehensive Loss
Net actuarial loss	2,818	3,356	1,628
Deferred income tax asset	(986)	(1,175)	(570)
Amount recognized	1,832	2,181	1,058
Components of Net Periodic Benefit Cost
Service cost	0	0	0
Interest cost	297	304	288
Expected return on plan assets	(459)	(469)	(513)
Recognized net loss due to settlement	671	0	594
Recognized net actuarial loss	293	73	275
Net periodic benefit cost	$ 802	$ (92)	$ 644

Employee Benefit Plans - Other

Employee Benefit Plans - Other Plan Changes Recognized in Other Comprehensive (Income) Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Net actuarial (gain) loss	$ (538)	$ 1,728	$ (1,761)
Amortization of prior service cost	0	0	0
Total recognized in other comprehensive (income) loss	(538)	1,728	(1,761)
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive (Income) Loss	$ 264	$ 1,636	$ (1,117)

Employee Benefit Plans - Weight

Employee Benefit Plans - Weighted-average Asset Allocation by Asset Category (Details)	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual asset allocations	100.00%	100.00%
Fixed Income [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual asset allocations	59.50%	47.60%
Equity[Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual asset allocations	32.00%	25.20%
Cash and Accrued Income [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual asset allocations	8.50%	27.20%

Employee Benefit Plans - Fair V

Employee Benefit Plans - Fair Value of Pension Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 8,428	$ 10,949	$ 10,870	$ 11,689
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,416	5,737
Significant Other Observable Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,012	5,212
Significant Unobservable Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	675	2,979
Cash [Member] | Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	675	2,979
Cash [Member] | Significant Other Observable Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash [Member] | Significant Unobservable Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Government sponsored entities [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,287	2,824
Government sponsored entities [Member] | Fixed Income [Member] | Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Government sponsored entities [Member] | Fixed Income [Member] | Significant Other Observable Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,287	2,824
Government sponsored entities [Member] | Fixed Income [Member] | Significant Unobservable Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Municipal bonds and notes [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,084	172
Municipal bonds and notes [Member] | Fixed Income [Member] | Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Municipal bonds and notes [Member] | Fixed Income [Member] | Significant Other Observable Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,084	172
Municipal bonds and notes [Member] | Fixed Income [Member] | Significant Unobservable Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporate bonds and notes [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,641	2,216
Corporate bonds and notes [Member] | Fixed Income [Member] | Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporate bonds and notes [Member] | Fixed Income [Member] | Significant Other Observable Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,641	2,216
Corporate bonds and notes [Member] | Fixed Income [Member] | Significant Unobservable Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. companies [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,481	2,384
U.S. companies [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,481	2,384
U.S. companies [Member] | Equity securities [Member] | Significant Other Observable Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. companies [Member] | Equity securities [Member] | Significant Unobservable Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign companies [Member] | Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	260	374
Foreign companies [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	260	374
Foreign companies [Member] | Equity securities [Member] | Significant Other Observable Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign companies [Member] | Equity securities [Member] | Significant Unobservable Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0

Employee Benefit Plans - Projec

Employee Benefit Plans - Projected Benefit Payments (Details) $ in Thousands	Dec. 31, 2015USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2,016	$ 1,400
2,017	340
2,018	547
2,019	1,014
2,020	453
2021-2025	$ 3,876

Fair Value Measurements - Finan

Fair Value Measurements - Financial Assets Measured on a Recurring Basis (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2013
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	$ 340,349,000	$ 344,716,000
Recurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	340,349,000	344,716,000
Recurring [Member] | Federal agencies and GSEs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	81,452,000	82,106,000
Recurring [Member] | Mortgage-backed and CMOs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	70,930,000	57,425,000
Recurring [Member] | State and municipal [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	175,891,000	195,493,000
Recurring [Member] | Corporate [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	10,590,000	8,379,000
Recurring [Member] | Equity securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	1,486,000	1,313,000
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	4,167,000
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] | Recurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	4,167,000
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] | Recurring [Member] | Federal agencies and GSEs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	2,995,000
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] | Recurring [Member] | Mortgage-backed and CMOs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] | Recurring [Member] | State and municipal [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	1,172,000
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] | Recurring [Member] | Corporate [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] | Recurring [Member] | Equity securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Significant Other Observable Inputs, Level 2 [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	338,863,000	339,236,000
Significant Other Observable Inputs, Level 2 [Member] | Recurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	338,863,000	339,236,000
Significant Other Observable Inputs, Level 2 [Member] | Recurring [Member] | Federal agencies and GSEs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	81,452,000	79,111,000
Significant Other Observable Inputs, Level 2 [Member] | Recurring [Member] | Mortgage-backed and CMOs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	70,930,000	57,425,000
Significant Other Observable Inputs, Level 2 [Member] | Recurring [Member] | State and municipal [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	175,891,000	194,321,000
Significant Other Observable Inputs, Level 2 [Member] | Recurring [Member] | Corporate [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	10,590,000	8,379,000
Significant Other Observable Inputs, Level 2 [Member] | Recurring [Member] | Equity securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Significant Unobservable Inputs, Level 3 [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	1,486,000	1,313,000
Significant Unobservable Inputs, Level 3 [Member] | Recurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	1,486,000	1,313,000
Significant Unobservable Inputs, Level 3 [Member] | Recurring [Member] | Federal agencies and GSEs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Significant Unobservable Inputs, Level 3 [Member] | Recurring [Member] | Mortgage-backed and CMOs [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Significant Unobservable Inputs, Level 3 [Member] | Recurring [Member] | State and municipal [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Significant Unobservable Inputs, Level 3 [Member] | Recurring [Member] | Corporate [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	0	0
Significant Unobservable Inputs, Level 3 [Member] | Recurring [Member] | Equity securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value	$ 1,486,000	$ 1,313,000
Convertible Preferred Stock [Member] | Significant Unobservable Inputs, Level 3 [Member] | Equity securities [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Fair Value			$ 1,000,000

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Fair Value Measurements Using Unobservable Inputs (Level 3) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances as of January 1, 2015	$ 1,313
Total Realized / Unrealized Gains (Losses) Included in Net Income	0
Total Realized / Unrealized Gains (Losses) Included in Other Comprehensive Income	173
Purchases, Sales, Issuances and Settlements, Net	0
Transfer In (Out) of Level 3	0
Balances as of December 31, 2015	1,486
Equity securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balances as of January 1, 2015	1,313
Total Realized / Unrealized Gains (Losses) Included in Net Income	0
Total Realized / Unrealized Gains (Losses) Included in Other Comprehensive Income	173
Purchases, Sales, Issuances and Settlements, Net	0
Transfer In (Out) of Level 3	0
Balances as of December 31, 2015	$ 1,486

Fair Value Measurements - Fi105

Fair Value Measurements - Financial Assets Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 0	$ 0
Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	3,266	616
Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	3,266	616
Impaired loans, net of valuation allowance	2,948	1,705
Other real estate owned, net	2,184	2,119
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Impaired loans, net of valuation allowance	0	0
Other real estate owned, net	0	0
Nonrecurring [Member] | Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	3,266	616
Impaired loans, net of valuation allowance	0	0
Other real estate owned, net	0	0
Nonrecurring [Member] | Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Impaired loans, net of valuation allowance	2,948	1,705
Other real estate owned, net	$ 2,184	$ 2,119

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Information (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Securities available for sale [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	49.00%	31.00%
Impaired loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	6.00%
Discount rate	4.00%
Other real estate owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Selling cost	6.00%	4.00%
Discount for lack of marketability and age of appraisal		6.00%

Fair Value Measurements - Balan

Fair Value Measurements - Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Financial Assets:
Securities available for sale	$ 340,349	$ 344,716
Quoted Prices in Active Markets for Identical Assets, Level 1 [Member]
Financial Assets:
Cash and cash equivalents	95,337	67,303
Securities available for sale	0	4,167
Restricted stock	0	0
Loans held for sale	0	0
Loans, net of allowance	0	0
Bank owned life insurance	0	0
Accrued interest receivable	0	0
Financial Liabilities:
Deposits	0	0
Repurchase agreements	0	0
Other borrowings	0	0
Junior subordinated debt	0	0
Accrued interest payable	0	0
Significant Other Observable Inputs, Level 2 [Member]
Financial Assets:
Cash and cash equivalents	0	0
Securities available for sale	338,863	339,236
Restricted stock	5,312	4,534
Loans held for sale	3,266	616
Loans, net of allowance	0	0
Bank owned life insurance	17,658	15,193
Accrued interest receivable	4,116	4,534
Financial Liabilities:
Deposits	865,350	712,020
Repurchase agreements	40,611	53,480
Other borrowings	0	0
Junior subordinated debt	0	0
Accrued interest payable	655	587
Significant Unobservable Inputs, Level 3 [Member]
Financial Assets:
Cash and cash equivalents	0	0
Securities available for sale	1,486	1,313
Restricted stock	0	0
Loans held for sale	0	0
Loans, net of allowance	994,808	832,708
Bank owned life insurance	0	0
Accrued interest receivable	0	0
Financial Liabilities:
Deposits	396,551	365,310
Repurchase agreements	0	0
Other borrowings	10,293	10,432
Junior subordinated debt	22,940	22,009
Accrued interest payable	0	0
Carrying Value [Member]
Financial Assets:
Cash and cash equivalents	95,337	67,303
Securities available for sale	340,349	344,716
Restricted stock	5,312	4,534
Loans held for sale	3,266	616
Loans, net of allowance	992,924	828,498
Bank owned life insurance	17,658	15,193
Accrued interest receivable	4,116	4,534
Financial Liabilities:
Deposits	1,262,660	1,075,837
Repurchase agreements	40,611	53,480
Other borrowings	9,958	9,935
Junior subordinated debt	27,622	27,521
Accrued interest payable	655	587
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	95,337	67,303
Securities available for sale	340,349	344,716
Restricted stock	5,312	4,534
Loans held for sale	3,266	616
Loans, net of allowance	994,808	832,708
Bank owned life insurance	17,658	15,193
Accrued interest receivable	4,116	4,534
Financial Liabilities:
Deposits	1,261,901	1,077,330
Repurchase agreements	40,611	53,480
Other borrowings	10,293	10,432
Junior subordinated debt	22,940	22,009
Accrued interest payable	$ 655	$ 587

Dividend Restrictions and Re108

Dividend Restrictions and Regulatory Capital - Narrative (Details) $ in Thousands	Dec. 31, 2015USD ($)
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Amount available for dividend distribution without prior approval from regulatory agency	$ 8,535

Dividend Restrictions and Re109

Dividend Restrictions and Regulatory Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Company [Member]
Common Equity Tier 1 Capital, Amount [Abstract]
Actual Amount	$ 150,916
Required for Capital Adequacy Purposes	$ 52,739
Common Equity Tier 1 Capital, Ratios [Abstract]
Actual Ratio	12.88%
Required for Capital Adequacy Purposes	4.50%
Total Capital, Actual Amount [Abstract]
Actual Amount	$ 191,542	$ 168,495
Required for Capital Adequacy Purposes	$ 93,758	$ 75,490
Total Capital, Ratios [Abstract]
Actual Ratio	16.34%	17.86%
Required for Capital Adequacy Purposes	8.00%	8.00%
Tier 1 Capital, Actual Amount [Abstract]
Actual Amount	$ 178,538	$ 156,549
Required for Capital Adequacy Purposes	$ 70,319	$ 37,745
Tier 1 Capital, Ratios [Abstract]
Actual Ratio	15.23%	16.59%
Required for Capital Adequacy Purposes	6.00%	4.00%
Leverage Capital, Actual Amount [Abstract]
Actual Amount	$ 178,538	$ 156,549
Required for Capital Adequacy Purposes	$ 59,260	$ 51,511
Leverage Capital, Ratios [Abstract]
Actual Ratio	12.05%	12.16%
Required for Capital Adequacy Purposes	4.00%	4.00%
Bank [Member]
Common Equity Tier 1 Capital, Amount [Abstract]
Actual Amount	$ 170,741
Required for Capital Adequacy Purposes	52,691
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 76,109
Common Equity Tier 1 Capital, Ratios [Abstract]
Actual Ratio	14.58%
Required for Capital Adequacy Purposes	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions	6.50%
Total Capital, Actual Amount [Abstract]
Actual Amount	$ 183,526	$ 155,174
Required for Capital Adequacy Purposes	93,673	75,310
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 117,091	$ 94,137
Total Capital, Ratios [Abstract]
Actual Ratio	15.67%	16.48%
Required for Capital Adequacy Purposes	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions	10.00%	10.00%
Tier 1 Capital, Actual Amount [Abstract]
Actual Amount	$ 170,741	$ 143,395
Required for Capital Adequacy Purposes	70,255	37,655
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 93,673	$ 56,482
Tier 1 Capital, Ratios [Abstract]
Actual Ratio	14.58%	15.23%
Required for Capital Adequacy Purposes	6.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions	8.00%	6.00%
Leverage Capital, Actual Amount [Abstract]
Actual Amount	$ 170,741	$ 143,397
Required for Capital Adequacy Purposes	59,187	51,434
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 73,984	$ 64,293
Leverage Capital, Ratios [Abstract]
Actual Ratio	11.54%	11.15%
Required for Capital Adequacy Purposes	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions	5.00%	5.00%

Segment and Related Informat110

Segment and Related Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)segment	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	2
Segment Reporting Information [Line Items]
Interest income	$ 55,169	$ 47,455	$ 52,956
Interest expense	5,904	5,730	6,583
Noninterest income	13,287	11,176	10,827
Income (loss) before income taxes	21,059	17,943	21,801
Net income (loss)	15,039	12,741	15,747
Depreciation and amortization	3,034	2,802	3,235
Total assets	1,547,599	1,346,492	1,307,512
Goodwill	43,872	39,043	39,043
Capital expenditures	1,474	1,049	865
Other [Member]
Segment Reporting Information [Line Items]
Interest income	60	60	28
Interest expense	760	742	754
Noninterest income	20	19	20
Income (loss) before income taxes	(1,076)	(1,022)	(946)
Net income (loss)	(710)	(674)	(624)
Depreciation and amortization	0	0	0
Total assets	225,533	201,482	195,076
Goodwill	0	0	0
Capital expenditures	0	0	0
Operating Segments [Member] | Community Banking [Member]
Segment Reporting Information [Line Items]
Interest income	55,109	47,395	52,928
Interest expense	5,144	4,988	5,829
Noninterest income	8,386	6,317	6,649
Income (loss) before income taxes	19,398	15,953	20,142
Net income (loss)	13,793	11,277	14,489
Depreciation and amortization	3,022	2,791	3,220
Total assets	1,545,377	1,338,465	1,305,540
Goodwill	43,872	39,043	39,043
Capital expenditures	1,453	1,046	861
Operating Segments [Member] | Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Interest income	0	0	0
Interest expense	0	0	0
Noninterest income	4,881	4,840	4,158
Income (loss) before income taxes	2,737	3,012	2,605
Net income (loss)	1,956	2,138	1,882
Depreciation and amortization	12	11	15
Total assets	0	0	0
Goodwill	0	0	0
Capital expenditures	21	3	4
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Interest income	0	0	0
Interest expense	0	0	0
Noninterest income	0	0	0
Income (loss) before income taxes	0	0	0
Net income (loss)	0	0	0
Depreciation and amortization	0	0	0
Total assets	(223,311)	(193,455)	(193,104)
Goodwill	0	0	0
Capital expenditures	$ 0	$ 0	$ 0

Parent Company Financial Inf111

Parent Company Financial Information - Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Balance Sheets [Abstract]
Total assets	$ 1,547,599	$ 1,346,492	$ 1,307,512
Junior subordinated debt	27,622	27,521
Shareholders' equity	197,835	173,780	$ 167,551	$ 163,246
Total liabilities and shareholders' equity	1,547,599	1,346,492
Parent Company [Member]
Consolidated Balance Sheets [Abstract]
Cash	5,571	10,980
Investment in subsidiaries	218,543	188,829
Due from subsidiaries	85	347
Other assets	1,504	1,326
Total assets	225,703	201,482
Junior subordinated debt	27,622	27,521
Other liabilities	246	181
Shareholders' equity	197,835	173,780
Total liabilities and shareholders' equity	$ 225,703	$ 201,482

Parent Company Financial Inf112

Parent Company Financial Information - Consolidated Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiary	$ 346	$ 296	$ 245
Income taxes (benefit)	6,020	5,202	6,054
Net Income	15,039	12,741	15,747
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiary	11,000	17,000	9,000
Other income	80	79	48
Expenses	1,156	1,100	994
Income taxes (benefit)	(366)	(347)	(322)
Income before equity in undistributed earnings of subsidiary	10,290	16,326	8,376
Equity in (distributed) undistributed earnings of subsidiary	4,749	(3,585)	7,371
Net Income	$ 15,039	$ 12,741	$ 15,747

Parent Company Financial Inf113

Parent Company Financial Information - Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Cash used for repurchase of stock	$ (3,506)	$ (1,508)	$ 0
Cash used for acquisition of MainStreet	(5,935)	0	0
Net Increase (Decrease) in Cash and Cash Equivalents	28,034	(378)	20,239
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash provided by dividends received from subsidiary	11,000	17,000	9,000
Cash used for payment of dividends	(8,068)	(7,237)	(7,248)
Cash used for repurchase of stock	(3,506)	(1,508)	0
Cash used for acquisition of MainStreet	(5,935)	0	0
Proceeds from exercise of options and stock compensation	789	1,089	883
Other	311	(1,236)	(2,051)
Net Increase (Decrease) in Cash and Cash Equivalents	$ (5,409)	$ 8,108	$ 584

Concentrations of Credit Risk (

Concentrations of Credit Risk (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Loans secure to total loans portfolio	$ 992,924	$ 828,498
Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of concentrations of loans to any individual, group of individuals, business, or industry	10.00%	10.00%
Real Estate [Member] | Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Loans secure to total loans portfolio	$ 822,037	$ 708,703
Percentage of loans secure to total loans portfolio	81.80%	84.30%
Commercial Real Estate [Member] | Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Loans secure to total loans portfolio	$ 430,186	$ 391,472
Percentage of loans secure to total loans portfolio	42.80%	46.60%
Nonresidential Buildings [Member] | Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of loans secure to total loans portfolio	19.50%	16.70%

Supplemental Cash Flow Infor115

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Supplemental Schedule of Cash and Cash Equivalents [Abstract]
Cash and due from banks	$ 19,352	$ 29,272	$ 19,808
Interest-bearing deposits in other banks	75,985	38,031	47,873
Cash and cash equivalents	95,337	67,303	67,681	$ 47,442
Cash paid for:
Interest on deposits and borrowed funds	5,836	5,753	6,728
Income taxes	3,090	4,371	4,530
Noncash investing and financing activities:
Transfer of loans to other real estate owned	2,101	386	1,826
Unrealized gain (loss) on securities available for sale	(2,652)	3,488	(9,571)
Change in unfunded pension liability	538	$ (1,728)	$ (1,761)
Assets assumed:
Investment securities	18,507
Restricted stock	587
Loans	115,960
Premises and equipment	956
Deferred income taxes	2,794
Core deposit intangible	1,839
Other real estate owned, net	168
Bank owned life insurance	1,955
Other assets	1,049
Liabilities assumed:
Demand, MMDA, and savings deposits	82,451
Time deposits	54,872
Other liabilities	3,076
Issuance of common stock	$ 20,483

Accumulated Other Comprehens116

Accumulated Other Comprehensive Income ("AOCI") (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 173,780	$ 167,551	$ 163,246
Ending Balance	197,835	173,780	167,551
Change in unrealized gains on securities available for sale, tax	(626)	1,398	(3,282)
Reclassification adjustment for gains on securities, tax	(303)	(177)	(67)
Change in unfunded pension liability, tax	189	(605)	616
Net Unrealized Gains (Losses) on Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	5,845	3,578	9,800
Net unrealized gains (losses) on securities available for sale, net of tax	(1,159)	2,595	(6,097)
Reclassification adjustment for realized gains on securities, net of tax	(564)	(328)	(125)
Change in unfunded pension liability	0	0	0
Ending Balance	4,122	5,845	3,578
Adjustments Related to Pension Benefits [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(2,181)	(1,058)	(2,203)
Net unrealized gains (losses) on securities available for sale, net of tax	0	0	0
Reclassification adjustment for realized gains on securities, net of tax	0	0	0
Change in unfunded pension liability	349	(1,123)	1,145
Ending Balance	(1,832)	(2,181)	(1,058)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	3,664	2,520	7,597
Net unrealized gains (losses) on securities available for sale, net of tax	(1,159)	2,595	(6,097)
Reclassification adjustment for realized gains on securities, net of tax	(564)	(328)	(125)
Change in unfunded pension liability	349	(1,123)	1,145
Ending Balance	$ 2,290	$ 3,664	$ 2,520

Accumulated Other Comprehens117

Accumulated Other Comprehensive Income ("AOCI") - Reclassifications Out of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains (losses), net	$ 867	$ 505	$ 192
Income taxes	(6,020)	(5,202)	(6,054)
Net income (loss)	15,039	12,741	15,747
Realized Investment Gains Losses [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains (losses), net	867	505	192
Income taxes	(303)	(177)	(67)
Net income (loss)	$ 564	$ 328	$ 125