Skyline Bankshares (SLBK) 10-K 23 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 20, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	PKKW
Entity Registrant Name	Parkway Acquisition Corp.
Entity Central Index Key	1,657,642
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		5,021,376
Entity Public Float			$ 48,347,918

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 6,367	$ 7,215
Interest-bearing deposits with banks	8,739	19,399
Federal funds sold	7,769	9,294
Investment securities available for sale	50,675	62,540
Restricted equity securities	1,388	1,149
Loans, net of allowance for loan losses of $3,453 at December 31, 2017 and $3,420 at December 31, 2016	421,418	408,548
Cash value of life insurance	17,348	16,850
Foreclosed assets	0	70
Properties and equipment, net	17,646	17,970
Accrued interest receivable	1,737	1,732
Core deposit intangible	2,045	2,327
Deferred tax assets, net	2,965	5,872
Other assets	9,864	5,890
Total assets	547,961	558,856
Deposits
Noninterest-bearing	130,847	127,224
Interest-bearing	357,594	372,163
Total deposits	488,441	499,387
Accrued interest payable	46	57
Other liabilities	2,292	3,946
Total Liabilities	490,779	503,390
Commitments and contingencies (Note 16)
Stockholders' Equity
Preferred stock value	0
Common stock value	0
Surplus	26,166	26,166
Retained earnings	32,526	30,654
Accumulated other comprehensive income (loss)	(1,510)	(1,354)
Total stockholders' equity	57,182	55,466
Total liabilities and stockholders' equity	$ 547,961	$ 558,856

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 3,453	$ 3,420
Preferred stock, no par value	$ 0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, issued	0	0
Common stock, no par value	$ 0
Common stock, shares authorized	25,000,000	25,000,000
Common stock, issued	5,021,376	5,021,376
Common stock, outstanding	5,021,376	5,021,376

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Interest income
Loans and fees on loans	$ 20,722	$ 16,284
Interest-bearing deposits in banks	48	37
Federal funds sold	111	46
Interest on securities:
Taxable	1,302	1,129
Exempt from federal income tax	0	3
Dividends	91	63
Interest and Dividend Income, Operating, Total	22,274	17,562
Interest expense
Deposits	1,473	1,286
Interest on borrowings	1	442
Interest Expense, Total	1,474	1,728
Net interest income	20,800	15,834
Provision for loan losses	217	(5)
Net interest income after provision for loan losses	20,583	15,839
Noninterest income
Service charges on deposit accounts	1,326	1,256
Other service charges and fees	1,597	1,346
Net realized gains on securities	242	364
Mortgage origination fees	293	167
Increase in cash value of life insurance	444	382
Bargain purchase gain	0	891
Other income	326	164
Non interest income	4,228	4,570
Noninterest expenses
Salaries and employee benefits	10,283	8,630
Occupancy and equipment	2,588	1,985
Foreclosed asset expense, net	44	79
Data processing expense	1,177	888
FDIC Assessments	272	247
Advertising	612	211
Bank franchise tax	397	270
Professional fees	430	327
Supplies	277	159
Director fees	327	257
Merger related expenses	748	1,483
Other expense	2,125	2,280
Noninterest Expense, Total	19,280	16,816
Income before income taxes	5,531	3,593
Income tax expense related to ordinary operations	1,669	1,175
Income tax expense related to change in tax rate	1,435
Total income tax expense	3,104	1,175
Net income	$ 2,427	$ 2,418
Basic earnings per share	$ 0.48	$ 0.60
Weighted average shares outstanding	5,021,376	4,026,114
Dividends declared per share	$ 0.16	$ 0.12

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 2,427	$ 2,418
Net change in pension reserve:
Change in pension reserve during the year	(67)	(261)
Tax related to change in pension reserve	23	89
Unrealized gains (losses) on investment securities available for sale:
Unrealized gains (losses) arising during the year	449	(331)
Tax related to unrealized (gains) losses	(153)	113
Reclassification of net realized gains during the year	(242)	(364)
Tax related to realized gains	82	124
Total other comprehensive income (loss)	92	(630)
Total comprehensive income	$ 2,519	$ 1,788

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Surplus	Retained Earnings	Accumulated Comprehensive Loss
Beginning balance at Dec. 31, 2015	$ 30,656	$ 2,149	$ 522	$ 28,709	$ (724)
Beginning balance (in shares) at Dec. 31, 2015		1,718,968
Net income	2,418			2,418
Other comprehensive income (loss)	(630)				(630)
Conversion of common stock in connection with new holding company on July 1, 2016:
Exchange of Grayson common stock, $1.25 par value	(2,149)	$ (2,149)
Exchange of Grayson common stock, $1.25 par value (in shares)		(1,718,968)
For Parkway common stock, no par value	2,149		2,419
For Parkway common stock, no par value (in shares)		3,025,384
Issuance of common stock in connection with acquisition of Cardinal Bankshares Corp	23,500		23,500
Issuance of common stock in connection with acquisition of Cardinal Bankshares Corp (in shares)		1,996,453
Redemption of fractional shares issued in acquisition of Cardinal Bankshares Corp	(5)		(5)
Redemption of fractional shares issued in acquisition of Cardinal Bankshares Corp (in shares)		(461)
Dividends paid prior to conversion	(172)			(172)
Dividends paid	(301)			(301)
Ending balance at Dec. 31, 2016	$ 55,466		26,166	30,654	(1,354)
Ending balance (in shares) at Dec. 31, 2016	5,021,376	5,021,376
Net income	$ 2,427	$ 0	0	2,427	0
Other comprehensive income (loss)	92	0	0	0	92
Conversion of common stock in connection with new holding company on July 1, 2016:
Reclassification of accumulated other comprehensive loss due to tax rate change	248	0	0	248	(248)
Dividends paid	(803)	0	0	(803)	0
Ending balance at Dec. 31, 2017	$ 57,182	$ 0	$ 26,166	$ 32,526	$ (1,510)
Ending balance (in shares) at Dec. 31, 2017	5,021,376	5,021,376

Consolidated Statements of Cha7

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Parkway common stock, no par value	$ 0
Dividends paid per share	$ 0.16	$ 0.06
Common Stock
Exchange of Grayson common stock, par value		1.25
Parkway common stock, no par value

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net income	$ 2,427	$ 2,418
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	1,315	883
Amortization of core deposit intangible	282	142
Accretion of loan discount and deposit premium, net	(1,245)	(1,047)
Bargain purchase gain	0	(891)
Increase in (reduction of) loan loss provision	217	(5)
Deferred income taxes	2,891	1,154
Net realized gains on securities	(242)	(364)
Accretion of discount on securities, net of amortization of premiums	671	602
Deferred compensation	(50)	(77)
Net realized loss on foreclosed assets	23	37
Life insurance income	0	(97)
Changes in assets and liabilities:
Cash value of life insurance	(444)	(382)
Accrued interest receivable	(5)	100
Other assets	(4,127)	(209)
Accrued interest payable	(11)	(147)
Other liabilities	(1,604)	1,462
Net cash provided by operating activities	98	3,579
Activity in available for sale securities:
Purchases	(1,914)	(17,881)
Sales	8,664	55,115
Maturities/calls/paydowns	4,893	14,349
Sales (purchases) or restricted equity securities	(239)	1,131
Net increase in loans	(12,070)	(12,105)
Proceeds from life insurance contracts	0	321
Proceeds from the sale of foreclosed assets	47	326
Purchases of property and equipment, net of sales	(991)	(674)
Cash received in business combination	0	11,698
Net cash (used in) provided by investing activities	(1,610)	52,280
Cash flows from financing activities
Net (decrease) increase in deposits	(10,718)	472
Net decrease in borrowings	0	(28,000)
Cash paid for fractional shares	0	(5)
Dividends paid	(803)	(473)
Net cash used in financing activities	(11,521)	(28,006)
Net (decrease) increase in cash and cash equivalents	(13,033)	27,853
Cash and cash equivalents, beginning	35,908	8,055
Cash and cash equivalents, ending	22,875	35,908
Supplemental disclosure of cash flow information
Interest paid	1,485	1,840
Taxes paid	70	320
Supplemental disclosure of noncash investing activities
Effect on equity of change in net unrealized loss on available for sale securities	136	(458)
Effect on equity of change in unfunded pension liability	(44)	(172)
Transfers of loans to foreclosed properties	0	25
Business combinations
Assets acquired	0	253,135
Liabilities assumed	0	228,744
Net assets	0	24,391
Bargain purchase gain	0	891
Stock issued to acquire Cardinal Bankshares Corp.	$ 0	$ 23,500

Organization and Summary of Sig

Organization and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Organization and Summary of Significant Accounting Policies	Note 1. Organization and Summary of Significant Accounting Policies Organization Parkway Acquisition Corp. (“Parkway”) was incorporated as a Virginia corporation on November 2, 2015. Parkway was formed as a business combination shell for the purpose of completing a business combination transaction between Grayson Bankshares, Inc. (“Grayson”) and Cardinal Bankshares Corporation (“Cardinal”). On November 6, 2015, Grayson, Cardinal and Parkway entered into an Agreement and Plan of Merger (the “merger agreement”), providing for the combination of the three companies. Terms of the merger agreement called for Grayson and Cardinal to merge with and into Parkway, with Parkway as the surviving corporation (the “merger”). The merger agreement established exchange ratios under which each share of Grayson common stock was converted to the right to receive 1.76 shares of common stock of Parkway, while each share of Cardinal common stock was converted to the right to receive 1.30 shares of common stock of Parkway. The exchange ratios resulted in Grayson shareholders receiving approximately 60% of the newly issued Parkway shares and Cardinal shareholders receiving approximately 40% of the newly issued Parkway shares. The merger was completed on July 1, 2016. Grayson is considered the acquiror and Cardinal is considered the acquiree in the transaction for accounting purposes. Upon completion of the merger, the Bank of Floyd, a wholly-owned subsidiary of Cardinal, was merged with and into Grayson National Bank (the “Bank’), a wholly-owned subsidiary of Grayson. The Bank was organized under the laws of the United States in 1900 and now serves the Virginia counties of Grayson, Floyd, Carroll, Wythe, Montgomery and Roanoke, and the surrounding areas through sixteen full-service banking offices and two loan production offices. Effective March 13, 2017, the Bank changed its name to Skyline National Bank. As an FDIC-insured National Banking Association, the Bank is subject to regulation by the Comptroller of the Currency. Parkway is regulated by the Board of Governors of the Federal Reserve System. For purposes of this annual report on Form 10-K, Critical Accounting Policies Management believes the policies with respect to the methodology for the determination of the allowance for loan losses, and asset impairment judgments involve a higher degree of complexity and require management to make difficult and subjective judgments which often require assumptions or estimates about highly uncertain matters. Changes in these judgments, assumptions or estimates could cause reported results to differ materially. These critical policies and their application are periodically reviewed with the Audit Committee and the Board of Directors. Principles of Consolidation The consolidated financial statements include the accounts of the Company and the Bank, which is wholly owned. All significant, intercompany transactions and balances have been eliminated in consolidation. Business Segments The Company reports its activities as a single business segment. In determining the appropriateness of segment definition, the Company considers components of the business about which financial information is available and regularly evaluated relative to resource allocation and performance assessment. Business Combinations Generally, acquisitions are accounted for under the acquisition method of accounting in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 805, Business Combinations. A business combination occurs when the Company acquires net assets that constitute a business, or acquires equity interests in one or more other entities that are businesses and obtains control over those entities. Business combinations are effected through the transfer of consideration consisting of cash and/or common stock and are accounted for using the acquisition method. Accordingly, the assets and liabilities of the acquired entity are recorded at their respective fair values as of the closing date of the acquisition. Determining the fair value of assets and liabilities, especially the loan portfolio, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values. Fair values are subject to refinement for up to one year after the closing date of the acquisition as information relative to closing date fair values becomes available. The results of operations of an acquired entity are included in our consolidated results from the closing date of the merger, and prior periods are not restated. No allowance for loan losses related to the acquired loans is recorded on the acquisition date because the fair value of the loans acquired incorporates assumptions regarding future credit losses. The fair value estimates associated with the acquired loans include estimates related to expected prepayments and the amount and timing of expected principal, interest and other cash flows. Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles 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 relate to the determination of the allowance for loan losses and the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans. In connection with the determination of the allowances for loan and foreclosed real estate losses, management obtains independent appraisals for significant properties. Substantially all of the Bank’s loan portfolio consists of loans in its market area. Accordingly, the ultimate collectability of a substantial portion of the Bank’s loan portfolio and the recovery of a substantial portion of the carrying amount of foreclosed real estate are susceptible to changes in local market conditions. The regional economy is diverse, but influenced to an extent by the manufacturing and agricultural segments. While management uses available information to recognize loan and foreclosed real estate losses, future additions to the allowances may be necessary based on changes in local economic conditions. In addition, regulatory agencies, as a part of their routine examination process, periodically review the Bank’s allowances for loan and foreclosed real estate losses. Such agencies may require the Bank to recognize additions to the allowances based on their judgments about information available to them at the time of their examinations. Because of these factors, it is reasonably possible that the allowances for loan and foreclosed real estate losses may change materially in the near term. The Company seeks strategies that minimize the tax effect of implementing their business strategies. As such, judgments are made regarding the ultimate consequence of long-term tax planning strategies, including the likelihood of future recognition of deferred tax benefits. The Company’s tax returns are subject to examination by both Federal and State authorities. Such examinations may result in the assessment of additional taxes, interest and penalties. As a result, the ultimate outcome, and the corresponding financial statement impact, can be difficult to predict with accuracy. Accounting for pension benefits, costs and related liabilities are developed using actuarial valuations. These valuations include key assumptions determined by management, including the discount rate and expected long-term rate of return on plan assets. Material changes in pension costs may occur in the future due to changes in these assumptions. Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents includes cash and amounts due from banks (including cash items in process of collection), interest-bearing deposits with banks and federal funds sold. Trading Securities The Company does not hold securities for short-term resale and therefore does not maintain a trading securities portfolio. Securities Held to Maturity Bonds, notes, and debentures for which the Company has the positive intent and ability to hold to maturity are reported at cost, adjusted for premiums and discounts that are recognized in interest income using the interest method over the period to maturity. The Company does not currently hold any securities classified as held to maturity. Securities Available for Sale Available for sale securities are reported at fair value and consist of bonds, notes, debentures, and certain equity securities not classified as trading securities or as held to maturity securities. Unrealized holding gains and losses, net of tax, on available for sale securities are reported as a net amount in a separate component of accumulated other comprehensive income. Realized gains and losses on the sale of available for sale securities are determined using the specific-identification method. Premiums and discounts are recognized in interest income using the interest method over the period to maturity. Declines in the fair value of individual held to maturity and available for sale securities below cost that are other than temporary are reflected as write-downs of the individual securities to fair value. Related write-downs are included in earnings as realized losses. Loans Receivable Loans receivable that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off Interest is accrued and credited to income based on the principal amount outstanding. The accrual of interest on impaired loans is discontinued when, in management’s opinion, the borrower may be unable to meet payments as they become due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received. Payments received are first applied to principal, and any remaining funds are then applied to interest. When facts and circumstances indicate the borrower has regained the ability to meet the required payments, the loan is returned to accrual status. Past due status of loans is determined based on contractual terms. Purchased Performing Loans – Loans Receivable, continued Purchased Credit-Impaired (“PCI”) Loans Allowance for Loan Losses The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectability of a loan balance, or portion thereof, is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. The allowance consists of specific, general and unallocated components. The specific component is calculated on an individual basis for larger-balance, non-homogeneous non-impaired A loan is considered impaired when, based on current information and events, it is probable that we 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 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 Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Bank does not separately identify individual consumer and residential loans for impairment disclosures, unless such loans are the subject of a restructuring agreement. Troubled Debt Restructurings Under GAAP, the Bank is required to account for certain loan modifications or restructurings as “troubled debt restructurings” or “troubled debt restructured loans.” In general, the modification or restructuring of a debt constitutes a troubled debt restructuring if the Bank for economic or legal reasons related to the borrower’s financial difficulties grants a concession to the borrower that the Bank would not otherwise consider. Debt restructuring or loan modifications for a borrower do not necessarily always constitute a troubled debt restructuring, however, and troubled debt restructurings do not necessarily result in non-accrual Property and Equipment Land is carried at cost. Bank premises, furniture and equipment are carried at cost, less accumulated depreciation and amortization computed principally by the straight-line method over the following estimated useful lives: Years Buildings and improvements 10-40 Furniture and equipment 5-12 Foreclosed Assets Real estate properties acquired through, or in lieu of, loan foreclosure are to be sold and are initially recorded at fair value less anticipated cost to sell at the date of foreclosure, establishing a new cost basis. After foreclosure, valuations are periodically performed by management and the real estate is 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 foreclosure expense on the consolidated statements of income. Pension Plan Prior to the merger, both Grayson National Bank (Grayson) and Bank of Floyd (Floyd) had qualified noncontributory defined benefit pension plans in place which covered substantially all of each bank’s employees. The benefits in each plan are primarily based on years of service and earnings. Both Grayson and Floyd plans were amended to freeze benefit accruals for all eligible employees prior to the effective date of the merger. Grayson’s plan is a single-employer plan, the funded status of which is measured as the difference between the fair value of plan assets and the projected benefit obligation. Floyd’s plan is a multi-employer plan for accounting purposes and is a multiple-employer plan under the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code. 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 Bank; (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 Bank 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. Core Deposit Intangible Core deposit intangibles represent the value of long-term deposit relationships acquired in a business combination. Core deposit intangibles are amortized over the estimated useful lives of the deposit accounts acquired (generally twenty years on an accelerated basis). Income Taxes Provision for income taxes is based on amounts reported in the statements of income (after exclusion of non-taxable Deferred income tax expense results from changes in deferred tax assets and liabilities between periods. Deferred tax assets are recognized if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more likely than not means a likelihood of more than 50 percent; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more likely than not recognition threshold is initially and subsequently measured as the largest amount of tax benefit that has a greater than 50 percent likelihood of being realized upon settlement with a taxing authority that has full knowledge of all relevant information. The determination of whether or not a tax position has met the more likely than not recognition threshold considers the facts, circumstances, and information available at the reporting date and is subject to management’s judgment. Deferred tax assets are reduced by a valuation allowance if, based on the weight of evidence available, it is more likely than not that some portion or all of a deferred tax asset will not be realized. The Company has early adopted ASU 2018-02, Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale and changes in the funded status of the pension plan which are also recognized as separate components of equity. The accumulated balances related to each component of other comprehensive income (loss) are as follows: (dollars in thousands) Unrealized Gains And Losses On Available for Sale Securities Defined Benefit Pension Items Total Balance, December 31, 2015 $ (116 ) $ (608 ) $ (724 ) Other comprehensive loss before reclassifications (218 ) (172 ) (390 ) Amounts reclassified from accumulated other comprehensive (loss) (240 ) — (240 ) Balance, December 31, 2016 $ (574 ) $ (780 ) $ (1,354 ) Other comprehensive income (loss) before reclassifications 296 (44 ) 252 Amounts reclassified from accumulated other comprehensive loss (160 ) 0 (160 ) Amounts reclassified to retained earnings from other comprehensive loss due to tax rate change (85 ) (163 ) (248 ) Balance, December 31, 2017 $ (523 ) $ (987 ) $ (1,510 ) Advertising Expense The Company expenses advertising costs as they are incurred. Advertising expense for the years presented is not material. Basic Earnings per Share Basic earnings per share is computed by dividing income available to common stockholders by the weighted average number of common shares outstanding during the period, after giving retroactive effect to stock splits and dividends. Off-Balance In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under line of credit arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded. Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 12. Fair value estimates involve uncertainties and matters of significant judgment. Changes in assumptions or in market conditions could significantly affect the estimates. Reclassification Certain reclassifications have been made to the prior years’ financial statements to place them on a comparable basis with the current presentation. Net income and stockholders’ equity previously reported were not affected by these reclassifications. Recent Accounting Pronouncements The following accounting standards may affect the future financial reporting by the Company: In May 2014, the FASB issued guidance to change the recognition of revenue from contracts with customers. The core principle of the new guidance is that an entity should recognize revenue to reflect the transfer of goods and services to customers in an amount equal to the consideration the entity receives or expects to receive. The guidance will be effective for the Company for reporting periods beginning after December 15, 2017. The Company will apply the guidance using a full retrospective approach. The Company’s revenue is comprised of net interest income and noninterest income. The scope of the guidance explicitly excludes net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives. Accordingly, the majority of our revenues will not be affected. The Company is currently assessing our revenue contracts related to revenue streams that are within the scope of the standard. Our accounting policies will not change materially since the principles of revenue recognition from the ASU are largely consistent with existing guidance and current practices applied by our businesses. We have not identified material changes to the timing or amount of revenue recognition. Based on the updated guidance, we do anticipate changes in our disclosures associated with our revenues. We will provide qualitative disclosures of our performance obligations related to our revenue recognition and we continue to evaluate disaggregation for significant categories of revenue in the scope of the guidance. In August 2015, the FASB deferred the effective date of ASU 2014-09, 2014-09 In January 2016, the FASB amended the Financial Instruments topic of the Accounting Standards Codification to address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The amendments will be effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company will apply the guidance by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values will be applied prospectively to equity investments that exist as of the date of adoption of the amendments. The Company does not expect these amendments to have a material effect on its consolidated financial statements. In February 2016, the FASB amended the Leases topic of the Accounting Standards Codification to revise certain aspects of recognition, measurement, presentation, and disclosure of leasing transactions. The amendments will be effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effect that implementation of the new standard will have on its financial position, results of operations, and cash flows. We expect to adopt the guidance using the modified retrospective method and practical expedients for transition. The practical expedients allow us to largely account for our existing leases consistent with current guidance except for the incremental balance sheet recognition for lessees. We have started an initial evaluation of our leasing contracts and activities. We have also started developing our methodology to estimate the right-of In March 2016, the FASB amended the Revenue from Contracts with Customers topic of the Accounting Standards Codification to clarify the implementation guidance on principal versus agent considerations and address how an entity should assess whether it is the principal or the agent in contracts that include three or more parties. The amendments will be effective for the Company for reporting periods beginning after December 15, 2017. The Company does not expect these amendments to have a material effect on its financial statements. In May 2016, the FASB amended the Revenue from Contracts with Customers topic of the Accounting Standards Codification to clarify guidance related to collectability, noncash consideration, presentation of sales tax, and transition. The amendments will be effective for the Company for reporting periods beginning after December 15, 2017 . In June 2016, the FASB issued guidance to change the accounting for credit losses and modify the impairment model for certain debt securities. The amendments will be effective for the Company for reporting periods beginning after December 15, 2019. Early adoption is permitted for all organizations for periods beginning after December 15, 2018. The Company will apply the amendments to the ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption. While early adoption is permitted beginning in first quarter 2019, we do not expect to elect that option. We are evaluating the impact of the ASU on our consolidated financial statements. We expect the ASU will result in an increase in the recorded allowance for loan losses given the change to estimated losses over the contractual life of the loans adjusted for expected prepayments. The majority of the increase results from longer duration portfolios. In addition to our allowance for loan losses, we will also record an allowance for credit losses on debt securities instead of applying the impairment model currently utilized. The amount of the adjustments will be impacted by each portfolio’s composition and credit quality at the adoption date as well as economic conditions and forecasts at that time. In December 2016, the FASB issued technical corrections and improvements to the Revenue from Contracts with Customers Topic. These corrections make a limited number of revisions to several pieces of the revenue recognition standard issued in 2014. The effective date and transition requirements for the technical corrections will be effective for the Company for reporting periods beginning after December 15, 2017. The Company will apply the guidance using a full retrospective approach. The Company does not expect these amendments to have a material effect on its financial statements. In January 2017, the FASB issued guidance to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendment to the Business Combinations Topic is intended to address concerns that the existing definition of a business has been applied too broadly and has resulted in many transactions being recorded as business acquisitions that in substance are more akin to asset acquisitions. The guidance will be effective for the Company for reporting periods beginning after December 15, 2017. Early adoption is permitted. The Company does not expect these amendments to have a material effect on its financial statements. In January 2017, the FASB updated the Accounting Changes and Error Corrections and the Investments—Equity Method and Joint Ventures Topics of the Accounting Standards Codification. The ASU incorporates into the Accounting Standards Codification recent SEC guidance about disclosing, under SEC SAB Topic 11.M, the effect on financial statements of adopting the revenue, leases, and credit losses standards. The ASU was effective upon issuance. The Company is currently evaluating the impact on additional disclosure requirements as each of the standards is adopted, however it does not expect these amendments to have a material effect on its financial position, results of operations or cash flows. In February 2017, the FASB amended the Other Income Topic of the Accounting Standards Codification to clarify the scope of the guidance on nonfinancial asset derecognition as well as the accounting for partial sales of nonfinancial assets. The amendments conform the derecognition guidance on nonfinancial assets with the model for transactions in the new revenue standard. The amendments will be effective for the Company for reporting periods beginning after December 15, 2017. The Company does not expect these amendments to have a material effect on its financial statements. In March 2017, the FASB amended the requirements in the Compensation—Retirement Benefits Topic of the Accounting Standards Codification related to the income statement presentation of the components of net periodic benefit cost for an entity’s sponsored defined benefit pension and other postretirement plans. The amendments will be effective for the Company for interim and annual periods beginning after December 15, 2017 . In March 2017, the FASB amended the requirements in the Receivables—Nonrefundable Fees and Other Costs Topic of the Accounting Standards Codification related to the amortization period for certain purchased callable debt securities held at a premium. The amendments shorten the amortization period for the premium to the earliest call date. The amendments will be effective for the Company for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. The Company does not expect these amendments to have a material effect on its financial statements. In November 2017, the FASB updated the Income Statement and Revenue from Contracts with Customers Topics of the Accounting Standards Codification. The amendments incorporate into the Accounting Standards Codification recent SEC guidance related to revenue recognition. The amendments were effective upon issuance. The Company is currently evaluating the impact on revenue recognition, however it does not expect these amendments to have a material effect on its financial statements. In February 2018, the FASB Issued ASU 2018-02, Other accounting standards that have been issued or proposed by the FASB or other standards-setting bodies are not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Business Combinations	Note 2. Business Combinations On July 1, 2016, Parkway completed its merger with Grayson and Cardinal. Parkway had no material assets or liabilities and did not conduct any business prior to consummation of the merger except to perform its obligations under the merger agreement. As such, Grayson was considered the acquiring entity in this business combination for accounting purposes. Under the terms of the merger agreement, each share of Grayson common stock was converted to the right to receive 1.76 shares of common stock of Parkway, while each share of Cardinal common stock was converted to the right to receive 1.30 shares of common stock of Parkway. There was no trading market and no market price for Parkway common stock on the date of the transaction. Parkway was quoted on the OTC Markets and began trading on August 31, 2016; however, Parkway was a new company and the stock was thinly traded. Grayson, as the accounting acquirer at the time of the merger, was also thinly traded and the limited number of shares traded prior to the acquisition were not considered indicative of trading value. Due to the limited trading history of Parkway and Grayson, the Company engaged a third party to determine the value of the transaction as well as the value of the consideration paid to Cardinal as a result of the transaction. The Company also engaged a third party to calculate fair values of all assets and liabilities acquired in the transaction. These valuations were subject to review and refinement for up to one year following the merger date, however so subsequent valuation adjustments were made. The following table presents the Cardinal assets acquired and liabilities assumed as of July 1, 2016 as well as the related fair value adjustments and determination of purchase gain. (dollars in thousands) As Reported by Fair Value As Reported by Assets Cash and cash equivalents $ 11,698 $ — $ 11,698 Investment securities 59,327 (322 )(a) 59,005 Restricted equity securities 1,308 — 1,308 Loans 164,044 (6,192 )(b) 157,852 Allowance for loan losses (2,123 ) 2,123 (c) — Cash value of life insurance 6,714 — 6,714 Property and equipment 5,384 1,039 (d) 6,423 Intangible assets — 2,469 (e) 2,469 Accrued interest receivable 539 - 539 Other assets 2,450 4,677 (f) 7,127 Total assets acquired $ 249,341 $ 3,794 $ 253,135 Liabilities Deposits $ 218,671 $ 602 (g) $ 219,273 Borrowings 8,000 — (h) 8,000 Accrued interest payable 35 — 35 Other liabilities 1,289 147 (i) 1,436 Total liabilities acquired $ 227,995 $ 749 $ 228,744 Net assets acquired 24,391 Total consideration paid 23,500 Purchase gain $ 891 Explanation of fair value adjustments: (a) Reflects the opening fair value of securities portfolio, which was established as the new book basis of the portfolio. (b) Reflects the fair value adjustment based on the Company’s third party valuation report. (c) Existing allowance for loan losses eliminated to reflect accounting guidance. (d) Estimated adjustment to Cardinal’s real property based upon third-party appraisals and the Company’s evaluation of equipment and other fixed assets. (e) Reflects the recording of the estimated core deposit intangible based on the Company’s third party valuation report. (f) Recording of deferred tax asset generated by the net fair value adjustments (tax rate = 34%). Also recognizes partial reversal of Cardinal’s deferred tax asset valuation allowance. (g) Estimated fair value adjustment to time deposits based on the Company’s third party evaluation report on deposits assumed. (h) Cardinal’s borrowings were overnight borrowings and carried at fair value therefore no adjustment was required. (i) Reflects the fair value adjustment based on the Company’s evaluation of acquired other liabilities. The merger was accounted for under the acquisition method of accounting. The assets and liabilities of Cardinal were recorded at their estimated fair values and added to those of Grayson for periods following the merger date. Valuations of acquired Cardinal assets and liabilities were subject to refinement for up to one year following the merger date. There are two methods to account for acquired loans as part of a business combination. Acquired loans that contain evidence of credit deterioration on the date of purchase are carried at the net present value of expected future proceeds in accordance with Financial Accounting Standards Board Accounting Standards Codification (“ASC”) 310-30. 310-20. Due to the limited trading history of Parkway and Grayson, the Company engaged a third party to determine the value of the transaction as well as the value of the consideration paid to Cardinal as a result of the transaction. The determined value of consideration received by Cardinal, when compared to the fair value of the net assets acquired from Cardinal, resulted in a bargain purchase gain of $891 thousand. The determined value of consideration received by Cardinal represented a premium when compared to the market price of Parkway stock, which was not publicly traded on the date of the merger. The premium results from enhanced cash flows and a lower required rate of return which are expected to be realized by Parkway, as compared to Grayson or Cardinal on a standalone basis. The merger of Grayson and Cardinal is expected to increase loan revenues due to an increased legal lending limit and expanded market area. Fee income is also expected to increase due to the larger deposit population. Significant cost savings are expected to be realized, particularly in the areas of salaries and benefits, data processing fees, and professional fees. A lower required rate of return is anticipated due to increased access to capital and an expected increase in liquidity of shares due to higher trading volumes. The following table presents the assets and liabilities of Parkway and Grayson prior to the merger, the estimated fair value of Cardinal assets acquired and liabilities assumed, and the resulting estimated balance sheet of Parkway immediately following the merger on July 1, 2016. (dollars in thousands) Pre-Merger Pre-Merger Cardinal Post-Merger Assets Cash and cash equivalents $ — $ 13,117 $ 11,698 $ 24,815 Investment securities — 33,847 59,005 92,852 Restricted equity securities — 971 1,308 2,279 Loans — 244,800 157,852 402,652 Allowance for loan losses — (3,309 ) - (3,309 ) Cash value of life insurance — 10,122 6,714 16,836 Foreclosed assets — 95 - 95 Property and equipment — 11,548 6,423 17,971 Goodwill and other intangible assets — - 2,469 2,469 Accrued interest receivable — 1,253 539 1,792 Other assets — 5,044 7,127 12,171 Total assets $ — $ 317,488 $ 253,135 $ 570,623 Liabilities Deposits $ — $ 274,265 $ 219,273 $ 493,538 Borrowings — 10,000 8,000 18,000 Accrued interest payable — 96 35 131 Other liabilities — 1,146 1,436 2,582 Total liabilities $ — $ 285,507 $ 228,744 $ 514,251 Shareholders’ Equity $ — $ 31,981 $ 24,391 $ 56,372 Supplemental Pro Forma Information (dollars in thousands except per share data) The table below presents supplemental pro forma information as if the Cardinal acquisition had occurred at the beginning of the earliest period presented, which was January 1, 2016. Pro forma results include adjustments for amortization and accretion of fair value adjustments and do not include any projected cost savings or other anticipated benefits of the merger. Therefore, the pro forma financial information is not indicative of the results of operations that would have occurred had the transactions been effected on the assumed date. Pre-tax merger-related costs of $1.5 million are included in the Company’s consolidated statements of operations for the year ended December 31, 2016, and are not included in the pro forma information below. Year Ended (unaudited) Net interest income $ 19,620 Net income (a) $ 2,935 Basic and diluted weighted average shares outstanding (b) 5,021,376 Basic and diluted earnings per common share $ 0.58 (a) Supplemental pro forma net income includes the impact of certain fair value adjustments. Supplemental pro forma net income does not include assumptions on cost savings or the impact of merger-related expenses. (b) Weighted average shares outstanding includes the full effect of the common stock issued in connection with the Cardinal acquisition as of the earliest reporting date. From the acquisition date of July 1, 2016 through December 31, 2016, Cardinal recorded actual net interest income of $3.5 million, non-interest

Restrictions on Cash

Restrictions on Cash	12 Months Ended
	Dec. 31, 2017
Cash and Cash Equivalents [Abstract]
Restrictions on Cash	Note 3. Restrictions on Cash To comply with banking regulations, the Bank is required to maintain certain average cash reserve balances. The daily average cash reserve requirement was approximately $3.6 million and $4.6 million for the periods including December 31, 2017 and 2016, respectively.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 4. Investment Securities Debt and equity securities have been classified in the consolidated balance sheets according to management’s intent. The amortized cost of securities and their approximate fair values at December 31 follow: (dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value 2017 Available for sale: Mortgage-backed securities $ 28,780 $ 0 $ (626 ) $ 28,154 Corporate securities 3,016 0 (80 ) 2,936 State and municipal securities 19,542 155 (112 ) 19,585 $ 51,338 $ 155 $ (818 ) $ 50,675 2016 Available for sale: Government sponsored enterprises $ 2,046 $ 236 $ (73 ) $ 2,209 Mortgage-backed securities 36,021 4 (823 ) 35,202 Corporate securities 3,061 — (87 ) 2,974 State and municipal securities 22,282 97 (224 ) 22,155 $ 63,410 $ 337 $ (1,207 ) $ 62,540 Restricted equity securities were $1.4 million and $1.1 million at December 31, 2017 and 2016, respectively. Restricted equity securities consist of investments in stock of the Federal Home Loan Bank of Atlanta (FHLB), Community Bankers Bank, Pacific Coast Bankers Bank, and the Federal Reserve Bank of Richmond, all of which are carried at cost. All of these entities are upstream correspondents of the Bank. The FHLB requires financial institutions to make equity investments in the FHLB in order to borrow money. The Bank is required to hold that stock so long as it borrows from the FHLB. The Federal Reserve requires Banks to purchase stock as a condition for membership in the Federal Reserve System. The Bank’s stock in Community Bankers Bank and Pacific Coast Bankers Bank is restricted only in the fact that the stock may only be repurchased by the respective banks. The following tables details unrealized losses and related fair values in the Company’s held to maturity and available for sale investment securities portfolios. This information is aggregated by the length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2017 and 2016. Less Than 12 Months 12 Months or More Total (dollars in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses 2017 Available for sale: Mortgage-backed securities $ 15,791 $ (324 ) $ 12,361 $ (302 ) $ 28,152 $ (626 ) Corporate securities 1,506 (10 ) 1,430 (70 ) 2,936 (80 ) State and municipal securities 5,284 (44 ) 2,758 (68 ) 8,042 (112 ) Total securities available for sale $ 22,581 $ (378 ) $ 16,549 $ (440 ) $ 39,130 $ (818 ) 2016 Available for sale: Government sponsored enterprises $ — $ — $ 1,924 $ (73 ) $ 1,924 $ (73 ) Mortgage-backed securities 31,759 (789 ) 688 (34 ) 32,447 (823 ) Corporate securities 1,548 (12 ) 1,425 (75 ) 2,973 (87 ) State and municipal securities 12,208 (224 ) — — 12,208 (224 ) Total securities available for sale $ 45,515 $ (1,025 ) $ 4,037 $ (182 ) $ 49,552 $ (1,207 ) At December 31, 2017, 35 debt securities with unrealized losses had depreciated 2.05 percent from their total amortized cost basis. Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to the length of time and the extent to which the fair value has been less than cost, and the financial condition and near-term prospects of the issuer. The relative significance of these and other factors will vary on a case by case basis. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, the results of reviews of the issuer’s financial condition and the issuer’s anticipated ability to pay the contractual cash flows of the investments. Since the Company intends to hold all of its investment securities until maturity, and it is more likely than not that the Company will not have to sell any of its investment securities before unrealized losses have been recovered, and the Company expects to recover the entire amount of the amortized cost basis of all its securities, none of the securities are deemed other than temporarily impaired at December 31, 2017. Management continues to monitor all of these securities with a high degree of scrutiny. There can be no assurance that the Company will not conclude in future periods that conditions existing at that time indicate some or all of these securities are other than temporarily impaired, which could require a charge to earnings in such periods. Proceeds from the sales of investment securities available for sale were $8.7 and $55.1 million for the years ended December 31, 2017 and 2016, respectively. Gross realized gains and losses for the years ended December 31 are as follows: (dollars in thousands) 2017 2016 Realized gains $ 257 $ 369 Realized losses (15 ) (5 ) $ 242 $ 364 There were no securities transferred between the available for sale and held to maturity portfolios or other sales of held to maturity securities during the periods presented. In the future management may elect to classify securities as held to maturity based upon such considerations as the nature of the security, the Bank’s ability to hold the security until maturity, and general economic conditions. The scheduled maturities of securities available for sale at December 31, 2017, were as follows: (dollars in thousands) Amortized Cost Fair Value Due in one year or less $ 729 $ 730 Due after one year through five years 8,435 8,398 Due after five years through ten years 21,371 20,975 Due after ten years 20,803 20,572 $ 51,338 $ 50,675 Maturities of mortgage backed securities are based on contractual amounts. Actual maturity will vary as loans underlying the securities are prepaid. Investment securities with amortized cost of approximately $11.2 million at December 31, 2017 and 2016, were pledged as collateral on public deposits and for other purposes as required or permitted by law.

Loans Receivable

Loans Receivable	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Loans Receivable	Note 5. Loans Receivable The major components of loans in the consolidated balance sheets at December 31, 2017 and December 31, 2016 are as follows: (dollars in thousands) 2017 2016 Commercial & agricultural $ 25,672 $ 26,086 Commercial mortgage 125,661 128,515 Construction & development 25,475 26,464 Farmland 33,353 33,531 Residential 199,120 187,188 Consumer & other 15,590 10,184 Total loans 424,871 411,968 Allowance for loan losses (3,453 ) (3,420 ) Loans, net of allowance for loan losses $ 421,418 $ 408,548 The major components of loans, net of fair value adjustments, acquired from Cardinal as of July 1, 2016, the acquisition date, are as follows: (dollars in thousands) Commercial & agricultural $ 15,897 Commercial mortgage 76,968 Construction & development 7,800 Farmland 4,146 Residential 49,609 Consumer & other 3,432 Total loans acquired $ 157,852 As of the acquisition date, all loans acquired from Cardinal were considered to be performing loans therefore there were no purchased credit impaired loans. As of December 31, 2017 and 2016, substantially all of the Bank’s residential 1-4

Allowance for Loan Losses and I

Allowance for Loan Losses and Impaired Loans	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Allowance for Loan Losses and Impaired Loans	Note 6. Allowance for Loan Losses and Impaired Loans Allowance for Loan Losses The allowance for loan losses is maintained at a level believed to be sufficient to provide for estimated loan losses based on evaluating known and inherent risks in the loan portfolio. The allowance is provided based upon management’s comprehensive analysis of the pertinent factors underlying the quality of the loan portfolio. These factors include changes in the amount and composition of the loan portfolio, delinquency levels, actual loss experience, current economic conditions, and detailed analysis of individual loans for which the full collectability may not be assured. The detailed analysis includes methods to estimate the fair value of loan collateral and the existence of potential alternative sources of repayment. The allowance consists of specific and general components. The specific component is calculated on an individual basis for larger-balance, non-homogeneous Allowance for Loan Losses, continued A provision for loan losses is charged against operations and is added to the allowance for loan losses based on quarterly comprehensive analyses of the loan portfolio. The allowance for loan losses is allocated to certain loan categories based on the relative risk characteristics, asset classifications and actual loss experience of the loan portfolio. While management has allocated the allowance for loan losses to various loan portfolio segments, the allowance is general in nature and is available for the loan portfolio in its entirety. The following table presents activity in the allowance by loan category and information on the loans evaluated individually for impairment and collectively evaluated for impairment as of December 31, 2017 and December 31, 2016: Allowance for Loan Losses and Recorded Investment in Loans (dollars in thousands) Construction & Development Farmland Residential Commercial Mortgage Commercial & Agricultural Consumer & Other Total December 31, 2017 Allowance for loan losses: Beginning Balance $ 319 $ 342 $ 1,841 $ 600 $ 210 $ 108 $ 3,420 Charge-offs (33 ) (34 ) (89 ) (59 ) (27 ) (76 ) (318 ) Recoveries 56 0 23 0 33 22 134 Provision (103 ) 50 100 78 66 26 217 Ending Balance $ 239 $ 358 $ 1,875 $ 619 $ 282 $ 80 $ 3,453 Ending balance: individually evaluated for impairment $ 0 $ 49 $ 42 $ 0 $ 0 $ 0 $ 91 Ending balance: collectively evaluated for impairment $ 239 $ 309 $ 1,833 $ 619 $ 282 $ 80 $ 3,362 Loans outstanding: Ending Balance $ 25,475 $ 33,353 $ 199,120 $ 125,661 $ 25,672 $ 15,590 $ 424,871 Ending balance: individually evaluated for impairment $ 0 $ 5,069 $ 1,556 $ 0 $ 0 $ 0 $ 6,625 Ending balance: collectively evaluated for impairment $ 25,475 $ 28,284 $ 197,564 $ 125,661 $ 25,672 $ 15,590 $ 418,246 December 31, 2016 Allowance for loan losses: Beginning Balance $ 344 $ 435 $ 1,887 $ 578 $ 136 $ 38 $ 3,418 Charge-offs (20 ) — (84 ) (21 ) (19 ) (70 ) (214 ) Recoveries 98 59 22 — 8 34 221 Provision (103 ) (152 ) 16 43 85 106 (5 ) Ending Balance $ 319 $ 342 $ 1,841 $ 600 $ 210 $ 108 $ 3,420 Ending balance: individually evaluated for impairment $ — $ 57 $ 184 $ — $ — $ — $ 241 Ending balance: collectively evaluated for impairment $ 319 $ 285 $ 1,657 $ 600 $ 210 $ 108 $ 3,179 Loans outstanding: Ending Balance $ 26,464 $ 33,531 $ 187,188 $ 128,515 $ 26,086 $ 10,184 $ 411,968 Ending balance: individually evaluated for impairment $ 580 $ 5,030 $ 1,533 $ 114 $ — $ — $ 7,257 Ending balance: collectively evaluated for impairment $ 25,884 $ 28,501 $ 185,655 $ 128,401 $ 26,086 $ 10,184 $ 404,711 As of December 31, 2017 and December 31, 2016, the Bank had no unallocated reserves included in the allowance for loan losses. Allowance for Loan Losses, continued Management closely monitors the quality of the loan portfolio and has established a loan review process designed to help grade the quality of the Bank’s loan portfolio. The Bank’s loan ratings coincide with the “Substandard,” “Doubtful” and “Loss” classifications used by federal regulators in their examination of financial institutions. Generally, an asset is considered Substandard if it is inadequately protected by the current net worth and paying capacity of the obligors and/or the collateral pledged. Substandard assets include those characterized by the distinct possibility that the insured financial institution will sustain some loss if the deficiencies are not corrected. Assets classified as Doubtful have all the weaknesses inherent in assets classified Substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable. Assets classified as Loss are those considered uncollectible, and of such little value that its continuance on the books is not warranted. Assets that do not currently expose the insured financial institutions to sufficient risk to warrant classification in one of the aforementioned categories but otherwise possess weaknesses are designated “Special Mention.” Management also maintains a listing of loans designated “Watch”. These loans represent borrowers with declining earnings, strained cash flow, increasing leverage and/or weakening market fundamentals that indicate above average risk. As of December 31, 2017 and December 31, 2016, respectively, the Bank had no loans graded “Doubtful” or “Loss” included in the balance of total loans outstanding. The following table lists the loan grades utilized by the Bank and the corresponding total of outstanding loans in each category as of December 31, 2017 and December 31, 2016: Credit Risk Profile by Internally Assigned Grades Loan Grades (dollars in thousands) Pass Watch Special Mention Substandard Total December 31, 2017 Real Estate Secured: Construction & development $ 24,612 $ 652 $ 0 $ 211 $ 25,475 Farmland 23,935 4,895 74 4,449 33,353 Residential 183,543 12,464 200 2,913 199,120 Commercial mortgage 106,102 15,291 1,611 2,657 125,661 Non-Real Commercial & agricultural 22,446 2,057 649 520 25,672 Consumer & other 15,262 328 0 0 15,590 Total $ 375,900 $ 35,687 $ 2,534 $ 10,750 $ 424,871 December 31, 2016 Real Estate Secured: Construction & development $ 24,659 $ 902 $ — $ 903 $ 26,464 Farmland 23,201 5,276 — 5,054 33,531 Residential 170,885 14,081 — 2,222 187,188 Commercial mortgage 105,317 13,449 3,353 6,396 128,515 Non-Real Commercial & agricultural 22,719 2,333 485 549 26,086 Consumer & other 10,018 126 — 40 10,184 Total $ 356,799 $ 36,167 $ 3,838 $ 15,164 $ 411,968 Allowance for Loan Losses, continued Loans may be placed in nonaccrual status when, in management’s opinion, the borrower may be unable to meet payments as they become due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received. Payments received are first applied to principal, and any remaining funds are then applied to interest. Loans are removed from nonaccrual status when they are deemed a loss and charged to the allowance, transferred to foreclosed assets, or returned to accrual status based upon performance consistent with the original terms of the loan or a subsequent restructuring thereof. The following table presents an age analysis of nonaccrual and past due loans by category as of December 31, 2017 and December 31, 2016: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Total Past Current Total Loans 90+ Days Past Due and Still Accruing Nonaccrual Loans December 31, 2017 Real Estate Secured: Construction & development $ 0 $ 0 $ 227 $ 227 $ 25,248 $ 25,475 $ 0 $ 226 Farmland 188 0 308 496 32,857 33,353 0 3,610 Residential 395 334 710 1,439 197,681 199,120 0 1,211 Commercial mortgage 0 0 194 194 125,467 125,661 0 194 Non-Real Commercial & agricultural 70 0 23 93 25,579 25,672 0 94 Consumer & other 2 24 0 26 15,564 15,590 0 0 Total $ 655 $ 358 $ 1,462 $ 2,475 $ 422,396 $ 424,871 $ 0 $ 5,335 December 31, 2016 Real Estate Secured: Construction & development $ — $ — $ 390 $ 390 $ 26,074 $ 26,464 $ — $ 647 Farmland 343 — — 343 33,188 33,531 — 3,310 Residential 413 48 19 480 186,708 187,188 — 31 Commercial mortgage 25 227 426 678 127,837 128,515 — 640 Non-Real Commercial & agricultural 67 — 25 92 25,994 26,086 — 31 Consumer & other 5 6 — 11 10,173 10,184 — 5 Total $ 853 $ 281 $ 860 $ 1,994 $ 409,974 $ 411,968 $ — $ 4,664 Impaired Loans A loan is considered impaired when it is probable that the Bank will be unable to collect all contractual principal and interest payments due in accordance with the original or modified terms of the loan agreement. Smaller balance homogenous loans may be collectively evaluated for impairment. Non-homogenous Impaired Loans, continued As of December 31, 2017 and December 31, 2016, respectively, the recorded investment in impaired loans totaled $12.3 million and $13.3 million. The total amount of collateral-dependent impaired loans at December 31, 2017 and December 31, 2016, respectively, was $3.7 million and $4.0 million. As of December 31, 2017 and December 31, 2016, respectively, $3.7 million and $4.4 million of the recorded investment in impaired loans did not have a related allowance. The Bank had $8.6 million and $10.0 million in troubled debt restructured loans included in impaired loans at December 31, 2017 and December 31, 2016, respectively. The categories of non-accrual non-accrual In 2015, management began collectively evaluating performing TDRs with a loan balance of $250,000 or less for impairment. As of December 31, 2017 and December 31, 2016, respectively, $5.7 million and $6.1 million of TDRs included in the following table were evaluated collectively for impairment and were deemed to have $303 thousand and $315 thousand of related allowance. The following table is a summary of information related to impaired loans as of December 31, 2017 and December 31, 2016: Impaired Loans (dollars in thousands) Recorded Investment 1 Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized December 31, 2017 With no related allowance recorded: Construction & development $ 0 $ 0 $ 0 $ 0 $ 0 Farmland 3,422 3,456 0 3,774 10 Residential 300 300 0 300 8 Commercial mortgage 0 0 0 0 0 Commercial & agricultural 0 26 0 27 0 Consumer & other 0 0 0 0 2 Subtotal 3,722 3,782 0 4,101 20 With an allowance recorded: Construction & development 361 361 16 718 111 Farmland 1,936 1,936 58 2,224 135 Residential 5,647 5,832 284 6,209 290 Commercial mortgage 602 737 33 1,020 54 Commercial & agricultural 55 55 3 89 13 Consumer & other 0 0 0 2 0 Subtotal 8,601 8,921 394 10,262 603 Totals: Construction & development 361 361 16 718 111 Farmland 5,358 5,392 58 5,998 145 Residential 5,947 6,132 284 6,509 298 Commercial mortgage 602 737 33 1,020 54 Commercial & agricultural 55 81 3 116 13 Consumer & other 0 0 0 2 2 Total $ 12,323 $ 12,703 $ 394 $ 14,363 $ 623 1 Recorded investment is the loan balance, net of any charge-offs Impaired Loans, continued (dollars in thousands) Recorded Investment 1 Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized December 31, 2016 With no related allowance recorded: Construction & development $ 581 $ 581 $ — $ 840 $ 17 Farmland 3,660 3,660 — 4,170 18 Residential — — — 347 10 Commercial mortgage 114 114 — 115 4 Commercial & agricultural — — — — — Consumer & other — — — — 1 Subtotal 4,355 4,355 — 5,472 50 With an allowance recorded: Construction & development 193 193 10 201 16 Farmland 1,679 1,679 73 1,705 84 Residential 6,138 6,300 423 6,629 302 Commercial mortgage 838 974 44 1,035 39 Commercial & agricultural 113 113 6 155 9 Consumer & other 4 4 — 10 1 Subtotal 8,965 9,263 556 9,735 451 Totals: Construction & development 774 774 10 1,041 33 Farmland 5,339 5,339 73 5,875 102 Residential 6,138 6,300 423 6,976 312 Commercial mortgage 952 1,088 44 1,150 43 Commercial & agricultural 113 113 6 155 9 Consumer & other 4 4 — 10 2 Total $ 13,320 $ 13,618 $ 556 $ 15,207 $ 501 1 Recorded investment is the loan balance, net of any charge-offs Troubled Debt Restructuring A troubled debt restructured loan is a loan for which the Bank, for reasons related to the borrower’s financial difficulties, grants a concession to the borrower that the Bank would not otherwise consider. The loan terms which have been modified or restructured due to a borrower’s financial difficulty, include but are not limited to: a reduction in the stated interest rate; an extension of the maturity at an interest rate below current market; a reduction in the face amount of the debt; a reduction in the accrued interest; or re-aging, The following table sets forth information with respect to the Bank’s troubled debt restructurings as of December 31, 2017 and December 31, 2016: (dollars in thousands) TDRs identified during the period TDRs identified in the last twelve months that subsequently defaulted (1) Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment December 31, 2017 Construction & development 0 $ 0 $ 0 0 $ 0 $ 0 Farmland 2 298 298 0 0 0 Residential 1 48 48 0 0 0 Commercial mortgage 0 0 0 0 0 0 Commercial & agricultural 0 0 0 0 0 0 Consumer & other 0 0 0 0 0 0 Total 3 $ 346 $ 346 0 $ 0 $ 0 During the twelve months ended December 31, 2017, three loans were modified that were considered to be TDRs. Term concessions only were granted and no additional funds were advanced. (1) Loans past due 30 days or more are considered to be in default. (dollars in thousands) TDRs identified during the period TDRs identified in the last twelve months that subsequently defaulted (1) Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment December 31, 2016 Construction & development — $ — $ — — $ — $ — Farmland 2 144 150 2 144 150 Residential 5 565 588 — — — Commercial mortgage — — — — — — Commercial & agricultural — — — — — — Consumer & other — — — — — — Total 7 $ 709 $ 738 2 $ 144 $ 150 During the twelve months ended December 31, 2016, seven loans were modified that were considered to be TDRs. Term concessions only were granted for seven loans, and additional funds were advanced on two loans to pay real estate taxes, personal taxes, and closing cost. Additional funds were advanced on one loan to pay for equipment repairs. (1) Loans past due 30 days or more are considered to be in default.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment	Note 7. Property and Equipment Components of property and equipment and total accumulated depreciation at December 31, 2017 and 2016, are as follows: (dollars in thousands) 2017 2016 Land $ 4,267 $ 4,145 Buildings and improvements 14,950 14,668 Furniture and equipment 10,213 9,634 29,430 28,447 Less accumulated depreciation (11,784 ) (10,477 ) $ 17,646 $ 17,970 Depreciation expense for the years ended December 31, 2017 and 2016 amounted to $1,315 thousand and $883 thousand respectively.

Cash Value of Life Insurance

Cash Value of Life Insurance	12 Months Ended
	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Cash Value of Life Insurance	Note 8. Cash Value of Life Insurance The Bank is owner and beneficiary of life insurance policies on certain employees and directors. Policy cash values totaled approximately $17.3 million, and $16.9 million at December 31, 2017 and 2016, respectively.

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Note 9. Intangible Assets The following table presents the gross carrying amount and accumulated amortization for the Company’s core deposit intangible assets, which are the only identifiable intangible assets subject to amortization. Core deposit intangibles at December 31, 2017 and 2016 are as follows: (dollars in thousands) 2017 2016 Gross carrying amount $ 2,469 $ 2,469 Accumulated amortization 424 142 Net book value $ 2,045 $ 2,327 Amortization expense for the years ended December 31, 2017 and 2016 amounted to $282 thousand and $142 thousand respectively.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Deposits	Note 10. Deposits The aggregate amount of time deposits in denominations of more than $250 thousand at December 31, 2017 and 2016 was $13.5 million, and $12.5 million, respectively. At December 31, 2017, the scheduled maturities of all time deposits are as follows: (dollars in thousands) 2018 $ 63,799 2019 25,183 2020 21,044 2021 22,112 2022 15,587 Total $ 147,725

Short-Term Debt

Short-Term Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Short-Term Debt	Note 11. Short-Term Debt At December 31, 2017 and 2016 the Bank had no debt outstanding classified as short-term. At December 31, 2017, the Bank had established unsecured lines of credit of approximately $28.0 million with correspondent banks to provide additional liquidity if, and as needed. In addition, the Bank has the ability to borrow up to approximately $136.5 million from the Federal Home Loan Bank, subject to the pledging of collateral.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Debt	Note 12. Long-Term Debt At December 31, 2017 and 2016 the Bank had no debt outstanding classified as long-term.

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Financial Instruments	Note 13. Financial Instruments FASB ASC 825, “Financial Instruments”, requires disclosure of fair value information about financial instruments, whether or not recognized in the balance sheet. In cases where quoted market prices are not available, fair values are based on estimates using present value of future cash flows or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instruments. FASB ASC 825 excludes certain financial instruments and all nonfinancial instruments from its disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. The following presents the carrying amount, fair value, and placement in the fair value hierarchy of the Company’s financial instruments as of December 31, 2017 and December 31, 2016. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity. Fair Value Measurements (dollars in thousands) Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2017 Financial Instruments—Assets Net Loans $ 421,418 $ 417,229 $ 0 $ 416,426 $ 803 Financial Instruments – Liabilities Time Deposits 147,725 144,656 0 144,656 0 December 31, 2016 Financial Instruments—Assets Net Loans $ 408,548 $ 405,876 $ — $ 405,410 $ 466 Financial Instruments – Liabilities Time Deposits 167,355 165,257 — 165,257 — The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Securities available for sale and derivatives are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans or foreclosed assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or write-downs of individual assets. Fair Value Hierarchy Under FASB ASC 820, “Fair Value Measurements and Disclosures”, the Company groups assets and liabilities 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. These levels are: Level 1 – Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 – Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 – Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include the use of option pricing models, discounted cash flow models and similar techniques. Following is a description of valuation methodologies used for assets and liabilities recorded at fair value. Investment Securities Available for Sale Investment securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter Loans The Company does not record loans at fair value on a recurring basis. However, from time to time, a loan is considered impaired and an allowance for loan losses is established. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. If a loan is identified as individually impaired, management measures impairment in accordance with applicable accounting guidance. The fair value of impaired loans is estimated using one of several methods, including collateral value, market value of similar debt, enterprise value, liquidation value and discounted cash flows. Those impaired loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. At December 31, 2017, a small percentage of the total impaired loans were evaluated based on the fair value of the collateral. In accordance with accounting standards, impaired loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price the Company records the impaired loan as nonrecurring Level 2. When the fair value is based on either an external or internal appraisal and there is no observable market price, the Company records the impaired loan as nonrecurring Level 3. Derivative Assets and Liabilities Derivative instruments held or issued by the Company for risk management purposes are traded in over-the-counter Foreclosed Assets Foreclosed assets are adjusted to fair value upon transfer of the loans to foreclosed assets. Subsequently, foreclosed assets are carried at the lower of carrying value or fair value. Fair value is based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. When the fair value of the collateral is based on an observable market price the Company records the foreclosed asset as nonrecurring Level 2. When the fair value of the collateral is based on either an external or internal appraisal and there is no observable market price, the Company records the foreclosed asset as nonrecurring Level 3. Assets Recorded at Fair Value on a Recurring Basis (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2017 Investment securities available for sale Mortgage-backed securities $ 28,154 $ 0 $ 28,154 $ 0 Corporate securities 2,936 0 2,936 0 State and municipal securities 19,585 0 19,585 0 Total assets at fair value $ 50,675 $ 0 $ 50,675 $ 0 December 31, 2016 Investment securities available for sale Government sponsored enterprises $ 2,209 $ — $ 2,209 $ — Mortgage-backed securities 35,202 — 35,202 — Corporate securities 2,974 — 2,974 — State and municipal securities 22,155 — 22,155 — Total assets at fair value $ 62,540 $ — $ 62,540 $ — No liabilities were recorded at fair value on a recurring basis as of December 31, 2017 or 2016. There were no significant transfers between levels during the years ended December 31, 2017 or 2016. Assets Recorded at Fair Value on a Nonrecurring Basis The Company may be required, from time to time, to measure certain assets and liabilities at fair value on a nonrecurring basis in accordance with U.S. generally accepted accounting principles. These include assets and liabilities that are measured at the lower of cost or market that were recognized at fair value below cost at the end of the period. No liabilities were recorded at fair value on a nonrecurring basis at December 31, 2017 or 2016. Assets measured at fair value on a nonrecurring basis are included in the table below. (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2017 Impaired loans $ 803 $ 0 $ 0 $ 803 Foreclosed assets 0 0 0 0 Total assets at fair value $ 803 $ 0 $ 0 $ 803 Assets Recorded at Fair Value on a Nonrecurring Basis, continued (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2016 Impaired loans $ 466 $ — $ — $ 466 Foreclosed assets 70 — — 70 Total assets at fair value $ 536 $ — $ — $ 536 For Level 3 assets measured at fair value on a recurring or non-recurring Fair Value at Fair Value at Valuation Technique Significant Unobservable Inputs General Range Impaired Loans $ 803 $ 466 Appraised Value/Discounted Cash Flows/Market Value of Note Discounts to reflect current market conditions, ultimate collectability, and estimated costs to sell 0 – 10 % Other Real Estate Owned $ 0 $ 70 Appraised Value/Comparable Sales/Other Estimates from Independent Sources Discounts to reflect current market conditions and estimated costs to sell 0 – 10 %

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Employee Benefit Plans	Note 14. Employee Benefit Plans Prior to the merger, both Grayson National Bank (Grayson) and Bank of Floyd (Floyd) had qualified noncontributory defined benefit pension plans in place which covered substantially all of each bank’s employees. The benefits in each plan are primarily based on years of service and earnings. Both Grayson and Floyd plans were amended to freeze benefit accruals for all eligible employees prior to the effective date of the merger. A summary of each plan follows: Grayson Plan The following is a summary of the plan’s funded status as of December 31: (dollars in thousands) 2017 2016 Change in benefit obligation Benefit obligation at beginning of year $ 4,783 $ 4,645 Interest cost 191 196 Actuarial (gain) loss 637 227 Benefits paid (380 ) (306 ) Settlement (gain) loss (8) 21 Benefit obligation at end of year 5,223 4,783 Change in plan assets Fair value of plan assets at beginning of year 7,894 7,722 Actual return on plan assets 999 478 Benefits paid (380) (306) Fair value of plan assets at end of year 8,513 7,894 Funded status at the end of the year $ 3,290 $ 3,111 Grayson Plan, continued (dollars in thousands) 2017 2016 Amounts recognized in the Balance Sheet Plan benefit cost $ 4,539 $ 4,292 Unrecognized net actuarial loss (1,249 ) (1,181 ) Amount recognized in other assets $ 3,290 $ 3,111 Amounts recognized in accumulated comprehensive income (loss) Unrecognized net actuarial loss $ (1,249 ) $ (1,181 ) Deferred taxes 262 401 Amount recognized in accumulated comprehensive income (loss), net $ (987 ) $ (780 ) Prepaid benefit detail Benefit obligation $ (5,223 ) $ (4,783 ) Fair value of assets 8,513 7,894 Unrecognized net actuarial loss 1,249 1,181 Prepaid benefit cost 4,539 4,292 Components of net periodic pension cost Interest cost $ 191 $ 196 Expected return on plan assets (552 ) (558 ) Recognized net loss due to settlement 86 57 Recognized net actuarial loss 28 10 Net periodic benefit expense (247) (295) Additional disclosure information Accumulated benefit obligation $ 5,223 $ 4,783 Vested benefit obligation $ 5,223 $ 4,783 Discount rate used for net periodic pension cost 4.00 % 4.25 % Discount rate used for disclosure 3.50 % 4.00 % Expected return on plan assets 7.00 % 7.25 % Rate of compensation increase N/A N/A Average remaining service (years) 13 14 Using the same fair value hierarchy described in Note 11, the fair values of the Company’s pension plan assets, by asset category, are as follows: (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2017 Cash equivalents and short term investments $ 0 $ 0 $ 0 $ 0 Mutual funds – equities 4,368 4,368 0 0 Mutual funds – fixed income 4,145 4,145 0 0 Total assets at fair value $ 8,513 $ 8,513 $ 0 $ 0 December 31, 2016 Cash equivalents and short term investments $ — $ — $ — $ — Mutual funds – equities 3,969 3,969 — — Mutual funds – fixed income 3,925 3,925 — — Total assets at fair value $ 7,894 $ 7,894 $ — $ — Grayson Plan, continued Estimated Future Benefit Payments (dollars in thousands) Pension Benefits 2018 $ 568 2019 49 2020 16 2021 123 2022 225 2023 – 2027 2,689 $ 3,670 Funding Policy It has been Bank practice to contribute the maximum tax-deductible Long-Term Rate of Return The plan sponsor selects the expected long-term rate-of-return-on-assets 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 during which the 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) Asset Allocation The pension plan’s weighted-average asset allocations at December 31, 2017 and 2016, by asset category are as follows: 2017 2016 Mutual funds – fixed income 49 % 50 % Mutual funds – equity 51 % 50 % Cash and equivalents 0 % 0 % Total 100 % 100 % Grayson Plan, continued The trust fund is sufficiently diversified to maintain a reasonable level of risk without imprudently sacrificing return, with a targeted asset allocation of 50 percent fixed income and 50 percent equities. The Investment Manager selects investment fund managers with demonstrated experience and expertise, and funds with demonstrated historical performance, for the implementation of the Plan’s investment strategy. The Investment Manager will consider both actively and passively managed investment strategies and will allocate funds across the asset classes to develop an efficient investment structure. It is the responsibility of the Trustee to administer the investments of the Trust within reasonable costs, being careful to avoid sacrificing quality. These costs include, but are not limited to, management and custodial fees, consulting fees, transaction costs and other administrative costs chargeable to the Trust. Floyd Plan The Company participates in the Pentegra Defined Benefit Plan for Financial Institutions (“The Pentegra DB Plan”), a tax-qualified The Pentegra DB Plan is a single plan under Internal Revenue Code Section 413 (C) and, as a result, all of the assets stand behind all of the liabilities. Accordingly, under the Pentegra DB Plan, contributions made by a participating employer may be used to provide benefits to participants of other participating employers. Funded Status (market value of plan assets divided by funding target) as of July 1 , 2017 2016 Valuation Valuation Source Report Report Bank of Floyd Plan 108.63 % 109.78 % Employer Contributions Plan expenses paid by the Company totaled approximately $58 thousand and $56 thousand for the years ended December 31, 2017 and 2016, respectively.

Deferred Compensation and Suppl

Deferred Compensation and Supplemental Executive Retirement Plans	12 Months Ended
	Dec. 31, 2017
Postemployment Benefits [Abstract]
Deferred Compensation and Supplemental Executive Retirement Plans	Note 15. Deferred Compensation and Supplemental Executive Retirement Plans Deferred compensation plans have been adopted for certain executive officers and members of the Board of Directors for future compensation upon retirement. Under plan provisions aggregate annual payments ranging from $1,992 to $37,200 are payable for ten years certain, generally beginning at age 65. Reduced benefits apply in cases of early retirement or death prior to the benefit date, as defined. Liability accrued for compensation deferred under the plan amounts to $312 thousand and $362 thousand at December 31, 2017 and 2016 respectively. Expense charged against income and included in salary and benefits expense was $27 thousand and $31 thousand in 2017 and 2016, respectively. Charges to income are based on changes in present value of future cash payments, discounted at 8 percent, consistent with prior years. Supplemental executive retirement plans for certain executive officers were adopted in 2017. The plans provide for annual payments ranging from $55,000 to $90,000, payable in monthly installments, and continuing for the life of the executive. Reduced benefits apply in cases of early retirement. Expense charged against income and included in salary and benefits expense in 2017 totaled $36 thousand for these supplemental executive retirement plans. Prior to the merger, the Bank of Floyd had adopted supplemental executive plans to provide benefits for two former members of management. Aggregate annual payments of $69 thousand are payable for 20 years, beginning subsequent to the executive’s last day of employment. The liability is calculated by discounting the anticipated future cash flows at 4.00%. The liability accrued for this obligation was $805 thousand at December 31, 2017. Charges to income amounted to approximately $32 thousand and $17 thousand in 2017 and 2016 respectively. These plans are unfunded, however, life insurance has been acquired in amounts sufficient to discharge the obligations of the agreements.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 16. Income Taxes Current and Deferred Income Tax Components The components of income tax expense (benefit) (substantially all Federal) are as follows: (dollars in thousands) 2017 2016 Current $ 213 $ 21 Deferred 2,891 1,154 $ 3,104 $ 1,175 Rate Reconciliation A reconciliation of income tax expense computed at the statutory federal income tax rate to income tax expense (benefit) included in the statements of income follows: (dollars in thousands) 2017 2016 Tax at statutory federal rate $ 1,881 $ 1,222 Tax exempt interest income (61 ) (33 ) Tax exempt insurance income (151 ) (163 ) State income tax, net of federal benefit 9 16 Merger expenses 4 205 Bargain purchase gain 0 (303 ) Merger related NOL adjustment 0 225 Other (13 ) 6 Deferred tax asset re-measurement 1,435 — $ 3,104 $ 1,175 Deferred Income Tax Analysis The significant components of net deferred tax assets (all Federal) at December 31, 2017 and 2016 are summarized as follows: (dollars in thousands) 2017 2016 Deferred tax assets Allowance for loan losses $ 482 $ 652 Acquired loan credit mark 842 1,710 Deferred compensation 335 569 Investment impairment charge recorded directly to stockholders’ equity as a component of other comprehensive income 19 497 Minimum pension liability 262 402 Net operating loss carryforward 2,131 4,227 Alternative minimum tax credit carryforward 638 394 Net unrealized losses on securities available for sale 139 296 Nonaccrual interest income 217 358 Other 76 200 $ 5,141 $ 9,305 Deferred tax liabilities Deferred loan origination costs 228 288 Core deposit intangible 433 798 Accrued pension costs 962 1,471 Depreciation 553 875 Accretion of discount on investment securities, net 0 1 $ 2,176 $ 3,433 Net deferred tax asset $ 2,965 $ 5,872 On December 22, 2017, the Tax Cuts and Jobs Act was signed into legislation, lowering the corporate income tax rate to 21% effective January 1, 2018 and making many other significant changes to the US income tax code. Under ASC 740, the effects of changes in tax rates and laws are recognized in the period in which the new legislation is enacted. As a result, the Company’s income tax expense for the year ended December 31, 2017 includes tax expense from the re-measurement The Bank has analyzed the tax positions taken or expected to be taken in its tax returns and concluded it has no liability related to uncertain tax positions in accordance with applicable regulations. Tax returns for the years subsequent to 2014 remain subject to examination by both federal and state tax authorities. Deferred tax assets or liabilities are initially recognized for differences between the financial statement carrying amount and the tax basis of assets and liabilities which will result in future deductible or taxable amounts and operating loss and tax credit carry-forwards. A valuation allowance is then established, as applicable, to reduce the deferred tax asset to the level at which it is “more likely than not” that the tax benefits will be realized. Sources of taxable income that may allow for the realization of tax benefits include (1) taxable income in the current year or prior years that is available through carry-back, (2) future taxable income that will result from the reversal of existing taxable temporary differences, and (3) taxable income generated by future operations. There is no valuation allowance for deferred tax assets as of December 31, 2017 and 2016. The net operating loss of approximately $10.1 million, if not utilized prior to, will begin to expire in 2031. It is management’s belief that realization of the deferred tax asset is more likely than not.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 17. Commitments and Contingencies Litigation In the normal course of business the Bank is involved in various legal proceedings. After consultation with legal counsel, management believes that any liability resulting from such proceedings will not be material to the consolidated financial statements. Financial Instruments with Off-Balance The Bank is party to financial instruments with off-balance The Bank’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. The Bank uses the same credit policies in making commitments and conditional obligations as for on-balance (dollars in thousands) 2017 2016 Commitments to extend credit $ 56,912 $ 54,667 Standby letters of credit 1,106 — $ 58,018 $ 54,667 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. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s creditworthiness on a case-by-case Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees 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 loan facilities to customers. Collateral held varies as specified above and is required in instances which the Bank deems necessary. Concentrations of Credit Risk Substantially all of the Bank’s loans, commitments to extend credit, and standby letters of credit have been granted to customers in the Bank’s market area and such customers are generally depositors of the Bank. Investments in state and municipal securities involve governmental entities within and outside the Bank’s market area. The concentrations of credit by type of loan are set forth in Note 5. The distribution of commitments to extend credit approximates the distribution of loans outstanding. Standby letters of credit are granted primarily to commercial borrowers. The Bank’s primary focus is toward small business and consumer transactions, and accordingly, it does not have a significant number of credits to any single borrower or group of related borrowers in excess of $5,000,000. The Bank has cash and cash equivalents on deposit with financial institutions which exceed federally insured limits.

Regulatory Restrictions

Regulatory Restrictions	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Regulatory Restrictions	Note 18. Regulatory Restrictions Dividends The Company’s dividend payments are generally made from dividends received from the Bank. Under applicable federal law, the Comptroller of the Currency restricts national bank total dividend payments in any calendar year to net profits of that year, as defined, combined with retained net profits for the two preceding years. The Comptroller also has authority under the Financial Institutions Supervisory Act to prohibit a national bank from engaging in an unsafe or unsound practice in conducting its business. It is possible, under certain circumstances, the Comptroller could assert that dividends or other payments would be an unsafe or unsound practice. Intercompany Transactions The Bank’s legal lending limit on loans to the Company is governed by Federal Reserve Act 23A, and differs from legal lending limits on loans to external customers. Generally, a bank may lend up to 10 percent of its capital and surplus to its Parent, if the loan is secured. If collateral is in the form of stocks, bonds, debentures or similar obligations, it must have a market value when the loan is made of at least 20 percent more than the amount of the loan, and if obligations of a state or political subdivision or agency thereof, it must have a market value of at least 10 percent more than the amount of the loan. If such loans are secured by obligations of the United States or agencies thereof, or by notes, drafts, bills of exchange or bankers’ acceptances eligible for rediscount or purchase by a Federal Reserve Bank, requirements for collateral in excess of the loan amount do not apply. Under this definition, the legal lending limit for the Bank on loans to the Company was approximately $5.7 million at December 31, 2017. No 23A transactions were deemed to exist between the Company and the Bank at December 31, 2017. Capital Requirements The Company and the Bank are subject to various regulatory capital requirements administered by federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory - and possibly additional discretionary - actions by regulators that, if undertaken, could have a direct material effect on the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of the Bank’s assets, liabilities, and certain off-balance Effective January 1, 2015, the federal banking regulators adopted rules to implement the Basel III regulatory capital reforms from the Basel Committee on Banking Supervision and certain provisions of the Dodd-Frank Act. The final rules required the Bank to comply with the following new minimum capital ratios: (i) a new common equity Tier 1 capital ratio of 4.5% of risk-weighted assets; (ii) a Tier 1 capital ratio of 6% of risk-weighted assets (increased from the prior requirement of 4%); (iii) a total capital ratio of 8% of risk-weighted assets (unchanged from the prior requirement); and (iv) a leverage ratio of 4% of total assets (unchanged from the prior requirement). When fully phased in on January 1, 2019, the rules will require the Company and the Bank to maintain (i) a minimum ratio of common equity Tier 1 to risk-weighted assets of at least 4.5%, plus a 2.5% “capital conservation buffer” (which is added to the 4.5% common equity Tier 1 ratio as that buffer is phased in, effectively resulting in a minimum ratio of common equity Tier 1 to risk-weighted assets of at least 7% upon full implementation), (ii) a minimum ratio of Tier 1 capital to risk-weighted assets of at least 6.0%, plus the 2.5% capital conservation buffer (which is added to the 6.0% Tier 1 capital ratio as that buffer is phased in, effectively resulting in a minimum Tier 1 capital ratio of 8.5% upon full implementation), (iii) a minimum ratio of total capital to risk-weighted assets of at least 8.0%, plus the 2.5% capital conservation buffer (which is added to the 8.0% total capital ratio as that buffer is phased in, effectively resulting in a minimum total capital ratio of 10.5% upon full implementation), and (iv) a minimum leverage ratio of 4%, calculated as the ratio of Tier 1 capital to average assets. 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. The rules also revised the “prompt corrective action” regulations pursuant to Section 38 of the FDIA by (i) introducing a common equity Tier 1 capital ratio requirement at each level (other than critically undercapitalized), with the required ratio being 6.5% for well-capitalized status; (ii) increasing the minimum Tier 1 capital ratio requirement for each category, with the minimum ratio for well-capitalized status being 8.0% (as compared to the prior ratio of 6.0%); and (iii) eliminating the current provision that provides that a bank with a composite supervisory rating of 1 may have a 3.0% Tier 1 leverage ratio and still be well-capitalized. These new thresholds were effective for the Bank as of January 1, 2015. The minimum total capital to risk-weighted assets ratio (10.0%) and minimum leverage ratio (5.0%) for well-capitalized status were unchanged by the final rules. The new capital requirements also included changes in the risk weights of assets to better reflect credit risk and other risk exposures. These include a 150% risk weight (up from 100%) for certain high volatility commercial real estate acquisition, development and construction loans and nonresidential mortgage loans that are 90 days past due or otherwise on nonaccrual status, a 20% (up from 0%) credit conversion factor for the unused portion of a commitment with an original maturity of one year or less that is not unconditionally cancelable, a 250% risk weight (up from 100%) for mortgage servicing rights and deferred tax assets that are not deducted from capital, and increased risk-weights (from 0% to up to 600%) for equity exposures. The Company meets eligibility criteria of a small bank holding company in accordance with the Federal Reserve Board’s Small Bank Holding Company Policy Statement issued in February 2015, and is no longer obligated to report consolidated regulatory capital. The Bank’s actual capital amounts and ratios are presented in the following table as of December 31, 2017 and 2016. These ratios comply with Federal Reserve rules to align with the Basel III Capital requirements effective January 1, 2015. Actual For Capital Adequacy Purposes To Be Well- Capitalized Amount Ratio Amount Ratio Amount Ratio December 31, 2017 Total Capital (to risk weighted assets) $ 56,962 13.14 % $ 34,688 8.00 % $ 43,360 10.00 % Tier 1 Capital (to risk weighted assets) $ 53,483 12.33 % $ 26,016 6.00 % $ 34,688 8.00 % Common Equity Tier 1 (to risk weighted assets) $ 53,483 12.33 % $ 19,512 4.50 % $ 28,184 6.50 % Tier 1 Capital (to average total assets) $ 53,483 9.81 % $ 21,808 4.00 % $ 27,260 5.00 % December 31, 2016 Total Capital (to risk weighted assets) $ 53,657 12.72 % $ 33,744 8.00 % $ 42,180 10.00 % Tier 1 Capital (to risk weighted assets) $ 50,111 11.88 % $ 25,308 6.00 % $ 33,744 8.00 % Common Equity Tier 1 (to risk weighted assets) $ 50,111 11.88 % $ 18,981 4.50 % $ 27,417 6.50 % Tier 1 Capital (to average total assets) $ 50,111 9.01 % $ 22,242 4.00 % $ 27,803 5.00 %

Transactions with Related Parti

Transactions with Related Parties	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Transactions with Related Parties	Note 19. Transactions with Related Parties The Bank has entered into transactions with its directors, significant stockholders and their affiliates (related parties). Such transactions were made in the ordinary course of business on substantially the same terms and conditions, including interest rates and collateral, as those prevailing at the same time for comparable transactions with other customers, and did not, in the opinion of management, involve more than normal credit risk or present other unfavorable features. Aggregate 2017 and 2016 loan transactions with related parties were as follows: (dollars in thousands) 2017 2016 Balance, beginning $ 5,112 $ 1,741 New loans 1,388 841 Repayments (1,228 ) (695 ) Change in relationship (503 ) 3,225 Balance, ending $ 4,769 $ 5,112 The Company has accepted deposits during the ordinary course of business from certain directors and executive officers of the Company and from their affiliates and associates. The total amount of these deposits outstanding was $10.7 million, and $9.5 million at December 31, 2017 and 2016, respectively.

Parent Company Financial Inform

Parent Company Financial Information	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Parent Company Financial Information	Note 20. Parent Company Financial Information Condensed financial information of Parkway Acquisition Corp. is presented as follows: Balance Sheets December 31, 2017 and 2016 (dollars in thousands) 2017 2016 Assets Cash and due from banks $ 1,518 $ 1,621 Investment in affiliate bank 55,115 53,168 Other assets 586 677 Total assets $ 57,219 $ 55,466 Liabilities Other liabilities $ 37 $ — Stockholders’ Equity Common stock 0 — Surplus 26,166 26,166 Retained earnings 32,526 30,654 Accumulated other comprehensive loss (1,510 ) (1,354 ) Total stockholders’ equity 57,182 55,466 Total liabilities and stockholders’ equity $ 57,219 $ 55,466 Statements of Income For the years ended December 31, 2017 and 2016 (dollars in thousands) 2017 2016 Income Dividends from affiliate bank $ 803 $ 573 Bargain purchase gain 0 891 Other income 1 7 804 1,471 Expenses Management and professional fees 35 56 Other expenses 36 27 71 83 Income before tax benefit and equity in undistributed income of affiliate 733 1,388 Federal income tax expense (161 ) (225 ) Income before equity in undistributed income of affiliate 572 1,163 Equity in undistributed income of affiliate 1,855 1,255 Net income $ 2,427 $ 2,418 Statements of Cash Flows For the years ended December 31, 2017 and 2016 (dollars in thousands) 2017 2016 Cash flows from operating activities Net income $ 2,427 $ 2,418 Adjustments to reconcile net income to net cash provided by operations: Equity in undistributed income of affiliate (1,855 ) (1,255 ) Bargain purchase gain 0 (891 ) Change in other assets 91 59 Change in other liabilities 37 (85 ) Net cash provided by operating activities 700 246 Cash flows from investing activities Net decrease in loans 0 1,002 Cash received in business combination 0 822 Net cash provided by investing activities 0 1,824 Cash flows from financing activities Cash paid for fractional shares 0 (5 ) Dividends paid (803 ) (473 ) Net cash used by financing activities (803 ) (478 ) Net (decrease) increase in cash and cash equivalents (103 ) 1,592 Cash and cash equivalents, beginning 1,621 29 Cash and cash equivalents, ending $ 1,518 $ 1,621

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 21. Subsequent Events Subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued. Recognized subsequent events are events or transactions that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing financial statements. Non-recognized subsequent events are events that provide evidence about conditions that did not exist at the date of the balance sheet but arose after that date. Management has reviewed the events occurring through the date the consolidated financial statements were issued and, other than what is disclosed below, no subsequent events occurred requiring accrual or disclosure. On March 1, 2018, Parkway, Skyline, and Great State Bank, a North Carolina state-chartered bank (“GSB”) entered into an Agreement and Plan of Merger (the “Merger Agreement”) under which Parkway will acquire GSB. The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, GSB will merge with and into Skyline (the “Merger”), with Skyline as the surviving bank in the Merger. The Merger Agreement was unanimously approved and adopted by the Board of Directors of each of Parkway and GSB. Subject to the terms and conditions of the Merger Agreement, at the effective time of the Merger (the “Effective Time”), GSB shareholders will have the right to receive 1.21 shares of the common stock of Parkway for each share of the common stock of GSB held immediately prior to the Effective Time. In connection with the execution of the Merger Agreement, all of the directors of GSB entered into support and non-competition non-competition non-solicitation non-solicitation

Organization and Summary of S30

Organization and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Critical Accounting Policies	Critical Accounting Policies Management believes the policies with respect to the methodology for the determination of the allowance for loan losses, and asset impairment judgments involve a higher degree of complexity and require management to make difficult and subjective judgments which often require assumptions or estimates about highly uncertain matters. Changes in these judgments, assumptions or estimates could cause reported results to differ materially. These critical policies and their application are periodically reviewed with the Audit Committee and the Board of Directors.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Company and the Bank, which is wholly owned. All significant, intercompany transactions and balances have been eliminated in consolidation.
Business Segments	Business Segments The Company reports its activities as a single business segment. In determining the appropriateness of segment definition, the Company considers components of the business about which financial information is available and regularly evaluated relative to resource allocation and performance assessment.
Business Combinations	Business Combinations Generally, acquisitions are accounted for under the acquisition method of accounting in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 805, Business Combinations. A business combination occurs when the Company acquires net assets that constitute a business, or acquires equity interests in one or more other entities that are businesses and obtains control over those entities. Business combinations are effected through the transfer of consideration consisting of cash and/or common stock and are accounted for using the acquisition method. Accordingly, the assets and liabilities of the acquired entity are recorded at their respective fair values as of the closing date of the acquisition. Determining the fair value of assets and liabilities, especially the loan portfolio, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values. Fair values are subject to refinement for up to one year after the closing date of the acquisition as information relative to closing date fair values becomes available. The results of operations of an acquired entity are included in our consolidated results from the closing date of the merger, and prior periods are not restated. No allowance for loan losses related to the acquired loans is recorded on the acquisition date because the fair value of the loans acquired incorporates assumptions regarding future credit losses. The fair value estimates associated with the acquired loans include estimates related to expected prepayments and the amount and timing of expected principal, interest and other cash flows.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles 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 relate to the determination of the allowance for loan losses and the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans. In connection with the determination of the allowances for loan and foreclosed real estate losses, management obtains independent appraisals for significant properties. Substantially all of the Bank’s loan portfolio consists of loans in its market area. Accordingly, the ultimate collectability of a substantial portion of the Bank’s loan portfolio and the recovery of a substantial portion of the carrying amount of foreclosed real estate are susceptible to changes in local market conditions. The regional economy is diverse, but influenced to an extent by the manufacturing and agricultural segments. While management uses available information to recognize loan and foreclosed real estate losses, future additions to the allowances may be necessary based on changes in local economic conditions. In addition, regulatory agencies, as a part of their routine examination process, periodically review the Bank’s allowances for loan and foreclosed real estate losses. Such agencies may require the Bank to recognize additions to the allowances based on their judgments about information available to them at the time of their examinations. Because of these factors, it is reasonably possible that the allowances for loan and foreclosed real estate losses may change materially in the near term. The Company seeks strategies that minimize the tax effect of implementing their business strategies. As such, judgments are made regarding the ultimate consequence of long-term tax planning strategies, including the likelihood of future recognition of deferred tax benefits. The Company’s tax returns are subject to examination by both Federal and State authorities. Such examinations may result in the assessment of additional taxes, interest and penalties. As a result, the ultimate outcome, and the corresponding financial statement impact, can be difficult to predict with accuracy. Accounting for pension benefits, costs and related liabilities are developed using actuarial valuations. These valuations include key assumptions determined by management, including the discount rate and expected long-term rate of return on plan assets. Material changes in pension costs may occur in the future due to changes in these assumptions.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents includes cash and amounts due from banks (including cash items in process of collection), interest-bearing deposits with banks and federal funds sold.
Trading Securities	Trading Securities The Company does not hold securities for short-term resale and therefore does not maintain a trading securities portfolio.
Securities Held to Maturity	Securities Held to Maturity Bonds, notes, and debentures for which the Company has the positive intent and ability to hold to maturity are reported at cost, adjusted for premiums and discounts that are recognized in interest income using the interest method over the period to maturity. The Company does not currently hold any securities classified as held to maturity.
Securities Available for Sale	Securities Available for Sale Available for sale securities are reported at fair value and consist of bonds, notes, debentures, and certain equity securities not classified as trading securities or as held to maturity securities. Unrealized holding gains and losses, net of tax, on available for sale securities are reported as a net amount in a separate component of accumulated other comprehensive income. Realized gains and losses on the sale of available for sale securities are determined using the specific-identification method. Premiums and discounts are recognized in interest income using the interest method over the period to maturity. Declines in the fair value of individual held to maturity and available for sale securities below cost that are other than temporary are reflected as write-downs of the individual securities to fair value. Related write-downs are included in earnings as realized losses.
Loans Receivable	Loans Receivable Loans receivable that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off Interest is accrued and credited to income based on the principal amount outstanding. The accrual of interest on impaired loans is discontinued when, in management’s opinion, the borrower may be unable to meet payments as they become due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received. Payments received are first applied to principal, and any remaining funds are then applied to interest. When facts and circumstances indicate the borrower has regained the ability to meet the required payments, the loan is returned to accrual status. Past due status of loans is determined based on contractual terms. Purchased Performing Loans – Loans Receivable, continued Purchased Credit-Impaired (“PCI”) Loans
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectability of a loan balance, or portion thereof, is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. The allowance consists of specific, general and unallocated components. The specific component is calculated on an individual basis for larger-balance, non-homogeneous non-impaired A loan is considered impaired when, based on current information and events, it is probable that we 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 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 Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Bank does not separately identify individual consumer and residential loans for impairment disclosures, unless such loans are the subject of a restructuring agreement.
Troubled Debt Restructurings	Troubled Debt Restructurings Under GAAP, the Bank is required to account for certain loan modifications or restructurings as “troubled debt restructurings” or “troubled debt restructured loans.” In general, the modification or restructuring of a debt constitutes a troubled debt restructuring if the Bank for economic or legal reasons related to the borrower’s financial difficulties grants a concession to the borrower that the Bank would not otherwise consider. Debt restructuring or loan modifications for a borrower do not necessarily always constitute a troubled debt restructuring, however, and troubled debt restructurings do not necessarily result in non-accrual
Property and Equipment	Property and Equipment Land is carried at cost. Bank premises, furniture and equipment are carried at cost, less accumulated depreciation and amortization computed principally by the straight-line method over the following estimated useful lives: Years Buildings and improvements 10-40 Furniture and equipment 5-12
Foreclosed Assets	Foreclosed Assets Real estate properties acquired through, or in lieu of, loan foreclosure are to be sold and are initially recorded at fair value less anticipated cost to sell at the date of foreclosure, establishing a new cost basis. After foreclosure, valuations are periodically performed by management and the real estate is 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 foreclosure expense on the consolidated statements of income.
Pension Plan	Pension Plan Prior to the merger, both Grayson National Bank (Grayson) and Bank of Floyd (Floyd) had qualified noncontributory defined benefit pension plans in place which covered substantially all of each bank’s employees. The benefits in each plan are primarily based on years of service and earnings. Both Grayson and Floyd plans were amended to freeze benefit accruals for all eligible employees prior to the effective date of the merger. Grayson’s plan is a single-employer plan, the funded status of which is measured as the difference between the fair value of plan assets and the projected benefit obligation. Floyd’s plan is a multi-employer plan for accounting purposes and is a multiple-employer plan under the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code.
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 Bank; (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 Bank 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.
Core Deposit Intangible	Core Deposit Intangible Core deposit intangibles represent the value of long-term deposit relationships acquired in a business combination. Core deposit intangibles are amortized over the estimated useful lives of the deposit accounts acquired (generally twenty years on an accelerated basis).
Income Taxes	Income Taxes Provision for income taxes is based on amounts reported in the statements of income (after exclusion of non-taxable Deferred income tax expense results from changes in deferred tax assets and liabilities between periods. Deferred tax assets are recognized if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more likely than not means a likelihood of more than 50 percent; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more likely than not recognition threshold is initially and subsequently measured as the largest amount of tax benefit that has a greater than 50 percent likelihood of being realized upon settlement with a taxing authority that has full knowledge of all relevant information. The determination of whether or not a tax position has met the more likely than not recognition threshold considers the facts, circumstances, and information available at the reporting date and is subject to management’s judgment. Deferred tax assets are reduced by a valuation allowance if, based on the weight of evidence available, it is more likely than not that some portion or all of a deferred tax asset will not be realized. The Company has early adopted ASU 2018-02,
Comprehensive Income	Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale and changes in the funded status of the pension plan which are also recognized as separate components of equity. The accumulated balances related to each component of other comprehensive income (loss) are as follows: (dollars in thousands) Unrealized Gains And Losses On Available for Sale Securities Defined Benefit Pension Items Total Balance, December 31, 2015 $ (116 ) $ (608 ) $ (724 ) Other comprehensive loss before reclassifications (218 ) (172 ) (390 ) Amounts reclassified from accumulated other comprehensive (loss) (240 ) — (240 ) Balance, December 31, 2016 $ (574 ) $ (780 ) $ (1,354 ) Other comprehensive income (loss) before reclassifications 296 (44 ) 252 Amounts reclassified from accumulated other comprehensive loss (160 ) 0 (160 ) Amounts reclassified to retained earnings from other comprehensive loss due to tax rate change (85 ) (163 ) (248 ) Balance, December 31, 2017 $ (523 ) $ (987 ) $ (1,510 )
Advertising Expense	Advertising Expense The Company expenses advertising costs as they are incurred. Advertising expense for the years presented is not material.
Basic Earnings per Share	Basic Earnings per Share Basic earnings per share is computed by dividing income available to common stockholders by the weighted average number of common shares outstanding during the period, after giving retroactive effect to stock splits and dividends.
Off-Balance Sheet Credit Related Financial Instruments	Off-Balance In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under line of credit arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 12. Fair value estimates involve uncertainties and matters of significant judgment. Changes in assumptions or in market conditions could significantly affect the estimates.
Reclassification	Reclassification Certain reclassifications have been made to the prior years’ financial statements to place them on a comparable basis with the current presentation. Net income and stockholders’ equity previously reported were not affected by these reclassifications.
Recent Accounting Pronouncements	Recent Accounting Pronouncements The following accounting standards may affect the future financial reporting by the Company: In May 2014, the FASB issued guidance to change the recognition of revenue from contracts with customers. The core principle of the new guidance is that an entity should recognize revenue to reflect the transfer of goods and services to customers in an amount equal to the consideration the entity receives or expects to receive. The guidance will be effective for the Company for reporting periods beginning after December 15, 2017. The Company will apply the guidance using a full retrospective approach. The Company’s revenue is comprised of net interest income and noninterest income. The scope of the guidance explicitly excludes net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives. Accordingly, the majority of our revenues will not be affected. The Company is currently assessing our revenue contracts related to revenue streams that are within the scope of the standard. Our accounting policies will not change materially since the principles of revenue recognition from the ASU are largely consistent with existing guidance and current practices applied by our businesses. We have not identified material changes to the timing or amount of revenue recognition. Based on the updated guidance, we do anticipate changes in our disclosures associated with our revenues. We will provide qualitative disclosures of our performance obligations related to our revenue recognition and we continue to evaluate disaggregation for significant categories of revenue in the scope of the guidance. In August 2015, the FASB deferred the effective date of ASU 2014-09, 2014-09 In January 2016, the FASB amended the Financial Instruments topic of the Accounting Standards Codification to address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The amendments will be effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company will apply the guidance by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values will be applied prospectively to equity investments that exist as of the date of adoption of the amendments. The Company does not expect these amendments to have a material effect on its consolidated financial statements. In February 2016, the FASB amended the Leases topic of the Accounting Standards Codification to revise certain aspects of recognition, measurement, presentation, and disclosure of leasing transactions. The amendments will be effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effect that implementation of the new standard will have on its financial position, results of operations, and cash flows. We expect to adopt the guidance using the modified retrospective method and practical expedients for transition. The practical expedients allow us to largely account for our existing leases consistent with current guidance except for the incremental balance sheet recognition for lessees. We have started an initial evaluation of our leasing contracts and activities. We have also started developing our methodology to estimate the right-of In March 2016, the FASB amended the Revenue from Contracts with Customers topic of the Accounting Standards Codification to clarify the implementation guidance on principal versus agent considerations and address how an entity should assess whether it is the principal or the agent in contracts that include three or more parties. The amendments will be effective for the Company for reporting periods beginning after December 15, 2017. The Company does not expect these amendments to have a material effect on its financial statements. In May 2016, the FASB amended the Revenue from Contracts with Customers topic of the Accounting Standards Codification to clarify guidance related to collectability, noncash consideration, presentation of sales tax, and transition. The amendments will be effective for the Company for reporting periods beginning after December 15, 2017 . In June 2016, the FASB issued guidance to change the accounting for credit losses and modify the impairment model for certain debt securities. The amendments will be effective for the Company for reporting periods beginning after December 15, 2019. Early adoption is permitted for all organizations for periods beginning after December 15, 2018. The Company will apply the amendments to the ASU through a cumulative-effect adjustment to retained earnings as of the beginning of the year of adoption. While early adoption is permitted beginning in first quarter 2019, we do not expect to elect that option. We are evaluating the impact of the ASU on our consolidated financial statements. We expect the ASU will result in an increase in the recorded allowance for loan losses given the change to estimated losses over the contractual life of the loans adjusted for expected prepayments. The majority of the increase results from longer duration portfolios. In addition to our allowance for loan losses, we will also record an allowance for credit losses on debt securities instead of applying the impairment model currently utilized. The amount of the adjustments will be impacted by each portfolio’s composition and credit quality at the adoption date as well as economic conditions and forecasts at that time. In December 2016, the FASB issued technical corrections and improvements to the Revenue from Contracts with Customers Topic. These corrections make a limited number of revisions to several pieces of the revenue recognition standard issued in 2014. The effective date and transition requirements for the technical corrections will be effective for the Company for reporting periods beginning after December 15, 2017. The Company will apply the guidance using a full retrospective approach. The Company does not expect these amendments to have a material effect on its financial statements. In January 2017, the FASB issued guidance to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendment to the Business Combinations Topic is intended to address concerns that the existing definition of a business has been applied too broadly and has resulted in many transactions being recorded as business acquisitions that in substance are more akin to asset acquisitions. The guidance will be effective for the Company for reporting periods beginning after December 15, 2017. Early adoption is permitted. The Company does not expect these amendments to have a material effect on its financial statements. In January 2017, the FASB updated the Accounting Changes and Error Corrections and the Investments—Equity Method and Joint Ventures Topics of the Accounting Standards Codification. The ASU incorporates into the Accounting Standards Codification recent SEC guidance about disclosing, under SEC SAB Topic 11.M, the effect on financial statements of adopting the revenue, leases, and credit losses standards. The ASU was effective upon issuance. The Company is currently evaluating the impact on additional disclosure requirements as each of the standards is adopted, however it does not expect these amendments to have a material effect on its financial position, results of operations or cash flows. In February 2017, the FASB amended the Other Income Topic of the Accounting Standards Codification to clarify the scope of the guidance on nonfinancial asset derecognition as well as the accounting for partial sales of nonfinancial assets. The amendments conform the derecognition guidance on nonfinancial assets with the model for transactions in the new revenue standard. The amendments will be effective for the Company for reporting periods beginning after December 15, 2017. The Company does not expect these amendments to have a material effect on its financial statements. In March 2017, the FASB amended the requirements in the Compensation—Retirement Benefits Topic of the Accounting Standards Codification related to the income statement presentation of the components of net periodic benefit cost for an entity’s sponsored defined benefit pension and other postretirement plans. The amendments will be effective for the Company for interim and annual periods beginning after December 15, 2017 . In March 2017, the FASB amended the requirements in the Receivables—Nonrefundable Fees and Other Costs Topic of the Accounting Standards Codification related to the amortization period for certain purchased callable debt securities held at a premium. The amendments shorten the amortization period for the premium to the earliest call date. The amendments will be effective for the Company for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. The Company does not expect these amendments to have a material effect on its financial statements. In November 2017, the FASB updated the Income Statement and Revenue from Contracts with Customers Topics of the Accounting Standards Codification. The amendments incorporate into the Accounting Standards Codification recent SEC guidance related to revenue recognition. The amendments were effective upon issuance. The Company is currently evaluating the impact on revenue recognition, however it does not expect these amendments to have a material effect on its financial statements. In February 2018, the FASB Issued ASU 2018-02, Other accounting standards that have been issued or proposed by the FASB or other standards-setting bodies are not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

Organization and Summary of S31

Organization and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Property and Equipment, Estimated Useful Lives	Land is carried at cost. Bank premises, furniture and equipment are carried at cost, less accumulated depreciation and amortization computed principally by the straight-line method over the following estimated useful lives: Years Buildings and improvements 10-40 Furniture and equipment 5-12
Accumulated Balances Related Component of Other Comprehensive Income (Loss)	The accumulated balances related to each component of other comprehensive income (loss) are as follows: (dollars in thousands) Unrealized Gains And Losses On Available for Sale Securities Defined Benefit Pension Items Total Balance, December 31, 2015 $ (116 ) $ (608 ) $ (724 ) Other comprehensive loss before reclassifications (218 ) (172 ) (390 ) Amounts reclassified from accumulated other comprehensive (loss) (240 ) — (240 ) Balance, December 31, 2016 $ (574 ) $ (780 ) $ (1,354 ) Other comprehensive income (loss) before reclassifications 296 (44 ) 252 Amounts reclassified from accumulated other comprehensive loss (160 ) 0 (160 ) Amounts reclassified to retained earnings from other comprehensive loss due to tax rate change (85 ) (163 ) (248 ) Balance, December 31, 2017 $ (523 ) $ (987 ) $ (1,510 )

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2017
Schedule of Assets and Liabilities	The following table presents the assets and liabilities of Parkway and Grayson prior to the merger, the estimated fair value of Cardinal assets acquired and liabilities assumed, and the resulting estimated balance sheet of Parkway immediately following the merger on July 1, 2016. (dollars in thousands) Pre-Merger Pre-Merger Cardinal Post-Merger Assets Cash and cash equivalents $ — $ 13,117 $ 11,698 $ 24,815 Investment securities — 33,847 59,005 92,852 Restricted equity securities — 971 1,308 2,279 Loans — 244,800 157,852 402,652 Allowance for loan losses — (3,309 ) - (3,309 ) Cash value of life insurance — 10,122 6,714 16,836 Foreclosed assets — 95 - 95 Property and equipment — 11,548 6,423 17,971 Goodwill and other intangible assets — - 2,469 2,469 Accrued interest receivable — 1,253 539 1,792 Other assets — 5,044 7,127 12,171 Total assets $ — $ 317,488 $ 253,135 $ 570,623 Liabilities Deposits $ — $ 274,265 $ 219,273 $ 493,538 Borrowings — 10,000 8,000 18,000 Accrued interest payable — 96 35 131 Other liabilities — 1,146 1,436 2,582 Total liabilities $ — $ 285,507 $ 228,744 $ 514,251 Shareholders’ Equity $ — $ 31,981 $ 24,391 $ 56,372
Supplemental Pro Forma Information	Supplemental Pro Forma Information (dollars in thousands except per share data) The table below presents supplemental pro forma information as if the Cardinal acquisition had occurred at the beginning of the earliest period presented, which was January 1, 2016. Pro forma results include adjustments for amortization and accretion of fair value adjustments and do not include any projected cost savings or other anticipated benefits of the merger. Therefore, the pro forma financial information is not indicative of the results of operations that would have occurred had the transactions been effected on the assumed date. Pre-tax merger-related costs of $1.5 million are included in the Company’s consolidated statements of operations for the year ended December 31, 2016, and are not included in the pro forma information below. Year Ended (unaudited) Net interest income $ 19,620 Net income (a) $ 2,935 Basic and diluted weighted average shares outstanding (b) 5,021,376 Basic and diluted earnings per common share $ 0.58 (a) Supplemental pro forma net income includes the impact of certain fair value adjustments. Supplemental pro forma net income does not include assumptions on cost savings or the impact of merger-related expenses. (b) Weighted average shares outstanding includes the full effect of the common stock issued in connection with the Cardinal acquisition as of the earliest reporting date.
Cardinal Bankshares Corporation
Schedule of Assets Acquired and Liabilities Assumed, Fair Value Adjustments and Determination of Purchase Gain	The following table presents the Cardinal assets acquired and liabilities assumed as of July 1, 2016 as well as the related fair value adjustments and determination of purchase gain. (dollars in thousands) As Reported by Fair Value As Reported by Assets Cash and cash equivalents $ 11,698 $ — $ 11,698 Investment securities 59,327 (322 )(a) 59,005 Restricted equity securities 1,308 — 1,308 Loans 164,044 (6,192 )(b) 157,852 Allowance for loan losses (2,123 ) 2,123 (c) — Cash value of life insurance 6,714 — 6,714 Property and equipment 5,384 1,039 (d) 6,423 Intangible assets — 2,469 (e) 2,469 Accrued interest receivable 539 - 539 Other assets 2,450 4,677 (f) 7,127 Total assets acquired $ 249,341 $ 3,794 $ 253,135 Liabilities Deposits $ 218,671 $ 602 (g) $ 219,273 Borrowings 8,000 — (h) 8,000 Accrued interest payable 35 — 35 Other liabilities 1,289 147 (i) 1,436 Total liabilities acquired $ 227,995 $ 749 $ 228,744 Net assets acquired 24,391 Total consideration paid 23,500 Purchase gain $ 891 Explanation of fair value adjustments: (a) Reflects the opening fair value of securities portfolio, which was established as the new book basis of the portfolio. (b) Reflects the fair value adjustment based on the Company’s third party valuation report. (c) Existing allowance for loan losses eliminated to reflect accounting guidance. (d) Estimated adjustment to Cardinal’s real property based upon third-party appraisals and the Company’s evaluation of equipment and other fixed assets. (e) Reflects the recording of the estimated core deposit intangible based on the Company’s third party valuation report. (f) Recording of deferred tax asset generated by the net fair value adjustments (tax rate = 34%). Also recognizes partial reversal of Cardinal’s deferred tax asset valuation allowance. (g) Estimated fair value adjustment to time deposits based on the Company’s third party evaluation report on deposits assumed. (h) Cardinal’s borrowings were overnight borrowings and carried at fair value therefore no adjustment was required. (i) Reflects the fair value adjustment based on the Company’s evaluation of acquired other liabilities.

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Aggregate Fair Value of Available for Sale Securities	The amortized cost of securities and their approximate fair values at December 31 follow: (dollars in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value 2017 Available for sale: Mortgage-backed securities $ 28,780 $ 0 $ (626 ) $ 28,154 Corporate securities 3,016 0 (80 ) 2,936 State and municipal securities 19,542 155 (112 ) 19,585 $ 51,338 $ 155 $ (818 ) $ 50,675 2016 Available for sale: Government sponsored enterprises $ 2,046 $ 236 $ (73 ) $ 2,209 Mortgage-backed securities 36,021 4 (823 ) 35,202 Corporate securities 3,061 — (87 ) 2,974 State and municipal securities 22,282 97 (224 ) 22,155 $ 63,410 $ 337 $ (1,207 ) $ 62,540
Unrealized Losses and Related Fair Values in Company's Held to Maturity and Available for Sale Investment Securities Portfolios	The following tables details unrealized losses and related fair values in the Company’s held to maturity and available for sale investment securities portfolios. This information is aggregated by the length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2017 and 2016. Less Than 12 Months 12 Months or More Total (dollars in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses 2017 Available for sale: Mortgage-backed securities $ 15,791 $ (324 ) $ 12,361 $ (302 ) $ 28,152 $ (626 ) Corporate securities 1,506 (10 ) 1,430 (70 ) 2,936 (80 ) State and municipal securities 5,284 (44 ) 2,758 (68 ) 8,042 (112 ) Total securities available for sale $ 22,581 $ (378 ) $ 16,549 $ (440 ) $ 39,130 $ (818 ) 2016 Available for sale: Government sponsored enterprises $ — $ — $ 1,924 $ (73 ) $ 1,924 $ (73 ) Mortgage-backed securities 31,759 (789 ) 688 (34 ) 32,447 (823 ) Corporate securities 1,548 (12 ) 1,425 (75 ) 2,973 (87 ) State and municipal securities 12,208 (224 ) — — 12,208 (224 ) Total securities available for sale $ 45,515 $ (1,025 ) $ 4,037 $ (182 ) $ 49,552 $ (1,207 )
Gross Realized Gains and Losses on Sale of Investment Securities	Gross realized gains and losses for the years ended December 31 are as follows: (dollars in thousands) 2017 2016 Realized gains $ 257 $ 369 Realized losses (15 ) (5 ) $ 242 $ 364
Scheduled Maturities of Securities Available for Sale	The scheduled maturities of securities available for sale at December 31, 2017, were as follows: (dollars in thousands) Amortized Cost Fair Value Due in one year or less $ 729 $ 730 Due after one year through five years 8,435 8,398 Due after five years through ten years 21,371 20,975 Due after ten years 20,803 20,572 $ 51,338 $ 50,675

Loans Receivable (Tables)

Loans Receivable (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Major Components of Loans in Consolidated Balance Sheets	The major components of loans in the consolidated balance sheets at December 31, 2017 and December 31, 2016 are as follows: (dollars in thousands) 2017 2016 Commercial & agricultural $ 25,672 $ 26,086 Commercial mortgage 125,661 128,515 Construction & development 25,475 26,464 Farmland 33,353 33,531 Residential 199,120 187,188 Consumer & other 15,590 10,184 Total loans 424,871 411,968 Allowance for loan losses (3,453 ) (3,420 ) Loans, net of allowance for loan losses $ 421,418 $ 408,548
Major Components of Loans, Net of Fair Value Adjustments, Acquired From Business Acquisition	The major components of loans, net of fair value adjustments, acquired from Cardinal as of July 1, 2016, the acquisition date, are as follows: (dollars in thousands) Commercial & agricultural $ 15,897 Commercial mortgage 76,968 Construction & development 7,800 Farmland 4,146 Residential 49,609 Consumer & other 3,432 Total loans acquired $ 157,852

Allowance for Loan Losses and35

Allowance for Loan Losses and Impaired Loans (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Allowance for Loan Losses and Recorded Investment in Loans	The following table presents activity in the allowance by loan category and information on the loans evaluated individually for impairment and collectively evaluated for impairment as of December 31, 2017 and December 31, 2016: Allowance for Loan Losses and Recorded Investment in Loans (dollars in thousands) Construction & Development Farmland Residential Commercial Mortgage Commercial & Agricultural Consumer & Other Total December 31, 2017 Allowance for loan losses: Beginning Balance $ 319 $ 342 $ 1,841 $ 600 $ 210 $ 108 $ 3,420 Charge-offs (33 ) (34 ) (89 ) (59 ) (27 ) (76 ) (318 ) Recoveries 56 0 23 0 33 22 134 Provision (103 ) 50 100 78 66 26 217 Ending Balance $ 239 $ 358 $ 1,875 $ 619 $ 282 $ 80 $ 3,453 Ending balance: individually evaluated for impairment $ 0 $ 49 $ 42 $ 0 $ 0 $ 0 $ 91 Ending balance: collectively evaluated for impairment $ 239 $ 309 $ 1,833 $ 619 $ 282 $ 80 $ 3,362 Loans outstanding: Ending Balance $ 25,475 $ 33,353 $ 199,120 $ 125,661 $ 25,672 $ 15,590 $ 424,871 Ending balance: individually evaluated for impairment $ 0 $ 5,069 $ 1,556 $ 0 $ 0 $ 0 $ 6,625 Ending balance: collectively evaluated for impairment $ 25,475 $ 28,284 $ 197,564 $ 125,661 $ 25,672 $ 15,590 $ 418,246 December 31, 2016 Allowance for loan losses: Beginning Balance $ 344 $ 435 $ 1,887 $ 578 $ 136 $ 38 $ 3,418 Charge-offs (20 ) — (84 ) (21 ) (19 ) (70 ) (214 ) Recoveries 98 59 22 — 8 34 221 Provision (103 ) (152 ) 16 43 85 106 (5 ) Ending Balance $ 319 $ 342 $ 1,841 $ 600 $ 210 $ 108 $ 3,420 Ending balance: individually evaluated for impairment $ — $ 57 $ 184 $ — $ — $ — $ 241 Ending balance: collectively evaluated for impairment $ 319 $ 285 $ 1,657 $ 600 $ 210 $ 108 $ 3,179 Loans outstanding: Ending Balance $ 26,464 $ 33,531 $ 187,188 $ 128,515 $ 26,086 $ 10,184 $ 411,968 Ending balance: individually evaluated for impairment $ 580 $ 5,030 $ 1,533 $ 114 $ — $ — $ 7,257 Ending balance: collectively evaluated for impairment $ 25,884 $ 28,501 $ 185,655 $ 128,401 $ 26,086 $ 10,184 $ 404,711
Credit Risk Profile by Internally Assigned Grades	The following table lists the loan grades utilized by the Bank and the corresponding total of outstanding loans in each category as of December 31, 2017 and December 31, 2016: Credit Risk Profile by Internally Assigned Grades Loan Grades (dollars in thousands) Pass Watch Special Mention Substandard Total December 31, 2017 Real Estate Secured: Construction & development $ 24,612 $ 652 $ 0 $ 211 $ 25,475 Farmland 23,935 4,895 74 4,449 33,353 Residential 183,543 12,464 200 2,913 199,120 Commercial mortgage 106,102 15,291 1,611 2,657 125,661 Non-Real Commercial & agricultural 22,446 2,057 649 520 25,672 Consumer & other 15,262 328 0 0 15,590 Total $ 375,900 $ 35,687 $ 2,534 $ 10,750 $ 424,871 December 31, 2016 Real Estate Secured: Construction & development $ 24,659 $ 902 $ — $ 903 $ 26,464 Farmland 23,201 5,276 — 5,054 33,531 Residential 170,885 14,081 — 2,222 187,188 Commercial mortgage 105,317 13,449 3,353 6,396 128,515 Non-Real Commercial & agricultural 22,719 2,333 485 549 26,086 Consumer & other 10,018 126 — 40 10,184 Total $ 356,799 $ 36,167 $ 3,838 $ 15,164 $ 411,968
Analysis of Nonaccrual and Past Due Loans	The following table presents an age analysis of nonaccrual and past due loans by category as of December 31, 2017 and December 31, 2016: (dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Total Past Current Total Loans 90+ Days Past Due and Still Accruing Nonaccrual Loans December 31, 2017 Real Estate Secured: Construction & development $ 0 $ 0 $ 227 $ 227 $ 25,248 $ 25,475 $ 0 $ 226 Farmland 188 0 308 496 32,857 33,353 0 3,610 Residential 395 334 710 1,439 197,681 199,120 0 1,211 Commercial mortgage 0 0 194 194 125,467 125,661 0 194 Non-Real Commercial & agricultural 70 0 23 93 25,579 25,672 0 94 Consumer & other 2 24 0 26 15,564 15,590 0 0 Total $ 655 $ 358 $ 1,462 $ 2,475 $ 422,396 $ 424,871 $ 0 $ 5,335 December 31, 2016 Real Estate Secured: Construction & development $ — $ — $ 390 $ 390 $ 26,074 $ 26,464 $ — $ 647 Farmland 343 — — 343 33,188 33,531 — 3,310 Residential 413 48 19 480 186,708 187,188 — 31 Commercial mortgage 25 227 426 678 127,837 128,515 — 640 Non-Real Commercial & agricultural 67 — 25 92 25,994 26,086 — 31 Consumer & other 5 6 — 11 10,173 10,184 — 5 Total $ 853 $ 281 $ 860 $ 1,994 $ 409,974 $ 411,968 $ — $ 4,664
Impaired Loans	The following table is a summary of information related to impaired loans as of December 31, 2017 and December 31, 2016: Impaired Loans (dollars in thousands) Recorded Investment 1 Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized December 31, 2017 With no related allowance recorded: Construction & development $ 0 $ 0 $ 0 $ 0 $ 0 Farmland 3,422 3,456 0 3,774 10 Residential 300 300 0 300 8 Commercial mortgage 0 0 0 0 0 Commercial & agricultural 0 26 0 27 0 Consumer & other 0 0 0 0 2 Subtotal 3,722 3,782 0 4,101 20 With an allowance recorded: Construction & development 361 361 16 718 111 Farmland 1,936 1,936 58 2,224 135 Residential 5,647 5,832 284 6,209 290 Commercial mortgage 602 737 33 1,020 54 Commercial & agricultural 55 55 3 89 13 Consumer & other 0 0 0 2 0 Subtotal 8,601 8,921 394 10,262 603 Totals: Construction & development 361 361 16 718 111 Farmland 5,358 5,392 58 5,998 145 Residential 5,947 6,132 284 6,509 298 Commercial mortgage 602 737 33 1,020 54 Commercial & agricultural 55 81 3 116 13 Consumer & other 0 0 0 2 2 Total $ 12,323 $ 12,703 $ 394 $ 14,363 $ 623 1 Recorded investment is the loan balance, net of any charge-offs Impaired Loans, continued (dollars in thousands) Recorded Investment 1 Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized December 31, 2016 With no related allowance recorded: Construction & development $ 581 $ 581 $ — $ 840 $ 17 Farmland 3,660 3,660 — 4,170 18 Residential — — — 347 10 Commercial mortgage 114 114 — 115 4 Commercial & agricultural — — — — — Consumer & other — — — — 1 Subtotal 4,355 4,355 — 5,472 50 With an allowance recorded: Construction & development 193 193 10 201 16 Farmland 1,679 1,679 73 1,705 84 Residential 6,138 6,300 423 6,629 302 Commercial mortgage 838 974 44 1,035 39 Commercial & agricultural 113 113 6 155 9 Consumer & other 4 4 — 10 1 Subtotal 8,965 9,263 556 9,735 451 Totals: Construction & development 774 774 10 1,041 33 Farmland 5,339 5,339 73 5,875 102 Residential 6,138 6,300 423 6,976 312 Commercial mortgage 952 1,088 44 1,150 43 Commercial & agricultural 113 113 6 155 9 Consumer & other 4 4 — 10 2 Total $ 13,320 $ 13,618 $ 556 $ 15,207 $ 501 1 Recorded investment is the loan balance, net of any charge-offs
Troubled Debt Restructurings	The following table sets forth information with respect to the Bank’s troubled debt restructurings as of December 31, 2017 and December 31, 2016: (dollars in thousands) TDRs identified during the period TDRs identified in the last twelve months that subsequently defaulted (1) Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment December 31, 2017 Construction & development 0 $ 0 $ 0 0 $ 0 $ 0 Farmland 2 298 298 0 0 0 Residential 1 48 48 0 0 0 Commercial mortgage 0 0 0 0 0 0 Commercial & agricultural 0 0 0 0 0 0 Consumer & other 0 0 0 0 0 0 Total 3 $ 346 $ 346 0 $ 0 $ 0 During the twelve months ended December 31, 2017, three loans were modified that were considered to be TDRs. Term concessions only were granted and no additional funds were advanced. (1) Loans past due 30 days or more are considered to be in default. (dollars in thousands) TDRs identified during the period TDRs identified in the last twelve months that subsequently defaulted (1) Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment Number of contracts Pre- modification outstanding recorded investment Post- modification outstanding recorded investment December 31, 2016 Construction & development — $ — $ — — $ — $ — Farmland 2 144 150 2 144 150 Residential 5 565 588 — — — Commercial mortgage — — — — — — Commercial & agricultural — — — — — — Consumer & other — — — — — — Total 7 $ 709 $ 738 2 $ 144 $ 150 During the twelve months ended December 31, 2016, seven loans were modified that were considered to be TDRs. Term concessions only were granted for seven loans, and additional funds were advanced on two loans to pay real estate taxes, personal taxes, and closing cost. Additional funds were advanced on one loan to pay for equipment repairs. (1) Loans past due 30 days or more are considered to be in default.

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Components of Property and Equipment and Total Accumulated Depreciation	Components of property and equipment and total accumulated depreciation at December 31, 2017 and 2016, are as follows: (dollars in thousands) 2017 2016 Land $ 4,267 $ 4,145 Buildings and improvements 14,950 14,668 Furniture and equipment 10,213 9,634 29,430 28,447 Less accumulated depreciation (11,784 ) (10,477 ) $ 17,646 $ 17,970

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Core Deposit Intangible Assets	The following table presents the gross carrying amount and accumulated amortization for the Company’s core deposit intangible assets, which are the only identifiable intangible assets subject to amortization. Core deposit intangibles at December 31, 2017 and 2016 are as follows: (dollars in thousands) 2017 2016 Gross carrying amount $ 2,469 $ 2,469 Accumulated amortization 424 142 Net book value $ 2,045 $ 2,327

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Scheduled Maturities of Time Deposits	At December 31, 2017, the scheduled maturities of all time deposits are as follows: (dollars in thousands) 2018 $ 63,799 2019 25,183 2020 21,044 2021 22,112 2022 15,587 Total $ 147,725

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Schedule of Carrying Amount, Fair Value, and Placement in Fair Value Hierarchy of Company's Financial Instruments, Excluding Financial Instruments, which the Carrying Amount Approximates Fair Value	The following presents the carrying amount, fair value, and placement in the fair value hierarchy of the Company’s financial instruments as of December 31, 2017 and December 31, 2016. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For financial liabilities such as noninterest-bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity. Fair Value Measurements (dollars in thousands) Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2017 Financial Instruments—Assets Net Loans $ 421,418 $ 417,229 $ 0 $ 416,426 $ 803 Financial Instruments – Liabilities Time Deposits 147,725 144,656 0 144,656 0 December 31, 2016 Financial Instruments—Assets Net Loans $ 408,548 $ 405,876 $ — $ 405,410 $ 466 Financial Instruments – Liabilities Time Deposits 167,355 165,257 — 165,257 —
Schedule of Assets Recorded at Fair Value on Recurring Basis	Assets Recorded at Fair Value on a Recurring Basis (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2017 Investment securities available for sale Mortgage-backed securities $ 28,154 $ 0 $ 28,154 $ 0 Corporate securities 2,936 0 2,936 0 State and municipal securities 19,585 0 19,585 0 Total assets at fair value $ 50,675 $ 0 $ 50,675 $ 0 December 31, 2016 Investment securities available for sale Government sponsored enterprises $ 2,209 $ — $ 2,209 $ — Mortgage-backed securities 35,202 — 35,202 — Corporate securities 2,974 — 2,974 — State and municipal securities 22,155 — 22,155 — Total assets at fair value $ 62,540 $ — $ 62,540 $ —
Schedule of Assets Recorded at Fair Value on Nonrecurring Basis	Assets measured at fair value on a nonrecurring basis are included in the table below. (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2017 Impaired loans $ 803 $ 0 $ 0 $ 803 Foreclosed assets 0 0 0 0 Total assets at fair value $ 803 $ 0 $ 0 $ 803 Assets Recorded at Fair Value on a Nonrecurring Basis, continued (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2016 Impaired loans $ 466 $ — $ — $ 466 Foreclosed assets 70 — — 70 Total assets at fair value $ 536 $ — $ — $ 536
Schedule of Assets Recorded at Fair Value on Recurring and Nonrecurring Basis	For Level 3 assets measured at fair value on a recurring or non-recurring Fair Value at Fair Value at Valuation Technique Significant Unobservable Inputs General Range Impaired Loans $ 803 $ 466 Appraised Value/Discounted Cash Flows/Market Value of Note Discounts to reflect current market conditions, ultimate collectability, and estimated costs to sell 0 – 10 % Other Real Estate Owned $ 0 $ 70 Appraised Value/Comparable Sales/Other Estimates from Independent Sources Discounts to reflect current market conditions and estimated costs to sell 0 – 10 %

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Summary of Plan's Funded Status	The following is a summary of the plan’s funded status as of December 31: (dollars in thousands) 2017 2016 Change in benefit obligation Benefit obligation at beginning of year $ 4,783 $ 4,645 Interest cost 191 196 Actuarial (gain) loss 637 227 Benefits paid (380 ) (306 ) Settlement (gain) loss (8) 21 Benefit obligation at end of year 5,223 4,783 Change in plan assets Fair value of plan assets at beginning of year 7,894 7,722 Actual return on plan assets 999 478 Benefits paid (380) (306) Fair value of plan assets at end of year 8,513 7,894 Funded status at the end of the year $ 3,290 $ 3,111
Amounts Recognized in Balance Sheet	(dollars in thousands) 2017 2016 Amounts recognized in the Balance Sheet Plan benefit cost $ 4,539 $ 4,292 Unrecognized net actuarial loss (1,249 ) (1,181 ) Amount recognized in other assets $ 3,290 $ 3,111
Amounts Recognized in Accumulated Comprehensive Income (Loss)	Amounts recognized in accumulated comprehensive income (loss) Unrecognized net actuarial loss $ (1,249 ) $ (1,181 ) Deferred taxes 262 401 Amount recognized in accumulated comprehensive income (loss), net $ (987 ) $ (780 )
Prepaid Benefit Detail	Prepaid benefit detail Benefit obligation $ (5,223 ) $ (4,783 ) Fair value of assets 8,513 7,894 Unrecognized net actuarial loss 1,249 1,181 Prepaid benefit cost 4,539 4,292
Components of Net Periodic Pension Cost	Components of net periodic pension cost Interest cost $ 191 $ 196 Expected return on plan assets (552 ) (558 ) Recognized net loss due to settlement 86 57 Recognized net actuarial loss 28 10 Net periodic benefit expense (247) (295)
Summary of Plan, Additional Disclosure Information	Additional disclosure information Accumulated benefit obligation $ 5,223 $ 4,783 Vested benefit obligation $ 5,223 $ 4,783 Discount rate used for net periodic pension cost 4.00 % 4.25 % Discount rate used for disclosure 3.50 % 4.00 % Expected return on plan assets 7.00 % 7.25 % Rate of compensation increase N/A N/A Average remaining service (years) 13 14
Fair Values of Pension Plan Assets, by Asset Category	Using the same fair value hierarchy described in Note 11, the fair values of the Company’s pension plan assets, by asset category, are as follows: (dollars in thousands) Total Level 1 Level 2 Level 3 December 31, 2017 Cash equivalents and short term investments $ 0 $ 0 $ 0 $ 0 Mutual funds – equities 4,368 4,368 0 0 Mutual funds – fixed income 4,145 4,145 0 0 Total assets at fair value $ 8,513 $ 8,513 $ 0 $ 0 December 31, 2016 Cash equivalents and short term investments $ — $ — $ — $ — Mutual funds – equities 3,969 3,969 — — Mutual funds – fixed income 3,925 3,925 — — Total assets at fair value $ 7,894 $ 7,894 $ — $ —
Estimated Future Benefit Payments	Estimated Future Benefit Payments (dollars in thousands) Pension Benefits 2018 $ 568 2019 49 2020 16 2021 123 2022 225 2023 – 2027 2,689 $ 3,670
Pension Plan's Weighted-Average Asset Allocations, by Asset Category	The pension plan’s weighted-average asset allocations at December 31, 2017 and 2016, by asset category are as follows: 2017 2016 Mutual funds – fixed income 49 % 50 % Mutual funds – equity 51 % 50 % Cash and equivalents 0 % 0 % Total 100 % 100 %
Funded Status (Market Value of Plan Assets Divided by Funding Target) as of July 1	Funded Status (market value of plan assets divided by funding target) as of July 1 , 2017 2016 Valuation Valuation Source Report Report Bank of Floyd Plan 108.63 % 109.78 %

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Components of Income Tax Expense (Benefit)	The components of income tax expense (benefit) (substantially all Federal) are as follows: (dollars in thousands) 2017 2016 Current $ 213 $ 21 Deferred 2,891 1,154 $ 3,104 $ 1,175
Reconciliation of Income Tax Expense Computed at Statutory Federal Income Tax Rate to Income Tax Expense (Benefit)	A reconciliation of income tax expense computed at the statutory federal income tax rate to income tax expense (benefit) included in the statements of income follows: (dollars in thousands) 2017 2016 Tax at statutory federal rate $ 1,881 $ 1,222 Tax exempt interest income (61 ) (33 ) Tax exempt insurance income (151 ) (163 ) State income tax, net of federal benefit 9 16 Merger expenses 4 205 Bargain purchase gain 0 (303 ) Merger related NOL adjustment 0 225 Other (13 ) 6 Deferred tax asset re-measurement 1,435 — $ 3,104 $ 1,175
Significant Components of Net Deferred Tax Assets	The significant components of net deferred tax assets (all Federal) at December 31, 2017 and 2016 are summarized as follows: (dollars in thousands) 2017 2016 Deferred tax assets Allowance for loan losses $ 482 $ 652 Acquired loan credit mark 842 1,710 Deferred compensation 335 569 Investment impairment charge recorded directly to stockholders’ equity as a component of other comprehensive income 19 497 Minimum pension liability 262 402 Net operating loss carryforward 2,131 4,227 Alternative minimum tax credit carryforward 638 394 Net unrealized losses on securities available for sale 139 296 Nonaccrual interest income 217 358 Other 76 200 $ 5,141 $ 9,305 Deferred tax liabilities Deferred loan origination costs 228 288 Core deposit intangible 433 798 Accrued pension costs 962 1,471 Depreciation 553 875 Accretion of discount on investment securities, net 0 1 $ 2,176 $ 3,433 Net deferred tax asset $ 2,965 $ 5,872

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Summary of Bank's Commitments	A summary of the Bank’s commitments at December 31, 2017 and 2016 is as follows: (dollars in thousands) 2017 2016 Commitments to extend credit $ 56,912 $ 54,667 Standby letters of credit 1,106 — $ 58,018 $ 54,667

Regulatory Restrictions (Tables

Regulatory Restrictions (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Capital Requirements Actual Capital Amounts and Ratios	The Bank’s actual capital amounts and ratios are presented in the following table as of December 31, 2017 and 2016. These ratios comply with Federal Reserve rules to align with the Basel III Capital requirements effective January 1, 2015. Actual For Capital Adequacy Purposes To Be Well- Capitalized Amount Ratio Amount Ratio Amount Ratio December 31, 2017 Total Capital (to risk weighted assets) $ 56,962 13.14 % $ 34,688 8.00 % $ 43,360 10.00 % Tier 1 Capital (to risk weighted assets) $ 53,483 12.33 % $ 26,016 6.00 % $ 34,688 8.00 % Common Equity Tier 1 (to risk weighted assets) $ 53,483 12.33 % $ 19,512 4.50 % $ 28,184 6.50 % Tier 1 Capital (to average total assets) $ 53,483 9.81 % $ 21,808 4.00 % $ 27,260 5.00 % December 31, 2016 Total Capital (to risk weighted assets) $ 53,657 12.72 % $ 33,744 8.00 % $ 42,180 10.00 % Tier 1 Capital (to risk weighted assets) $ 50,111 11.88 % $ 25,308 6.00 % $ 33,744 8.00 % Common Equity Tier 1 (to risk weighted assets) $ 50,111 11.88 % $ 18,981 4.50 % $ 27,417 6.50 % Tier 1 Capital (to average total assets) $ 50,111 9.01 % $ 22,242 4.00 % $ 27,803 5.00 %

Transactions with Related Par44

Transactions with Related Parties (Tables)	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Loan Transactions with Related Parties	Aggregate 2017 and 2016 loan transactions with related parties were as follows: (dollars in thousands) 2017 2016 Balance, beginning $ 5,112 $ 1,741 New loans 1,388 841 Repayments (1,228 ) (695 ) Change in relationship (503 ) 3,225 Balance, ending $ 4,769 $ 5,112

Parent Company Financial Info45

Parent Company Financial Information (Tables)	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Balance Sheets	Balance Sheets December 31, 2017 and 2016 (dollars in thousands) 2017 2016 Assets Cash and due from banks $ 1,518 $ 1,621 Investment in affiliate bank 55,115 53,168 Other assets 586 677 Total assets $ 57,219 $ 55,466 Liabilities Other liabilities $ 37 $ — Stockholders’ Equity Common stock 0 — Surplus 26,166 26,166 Retained earnings 32,526 30,654 Accumulated other comprehensive loss (1,510 ) (1,354 ) Total stockholders’ equity 57,182 55,466 Total liabilities and stockholders’ equity $ 57,219 $ 55,466
Statements of Income	Statements of Income For the years ended December 31, 2017 and 2016 (dollars in thousands) 2017 2016 Income Dividends from affiliate bank $ 803 $ 573 Bargain purchase gain 0 891 Other income 1 7 804 1,471 Expenses Management and professional fees 35 56 Other expenses 36 27 71 83 Income before tax benefit and equity in undistributed income of affiliate 733 1,388 Federal income tax expense (161 ) (225 ) Income before equity in undistributed income of affiliate 572 1,163 Equity in undistributed income of affiliate 1,855 1,255 Net income $ 2,427 $ 2,418
Statements of Cash Flow	Statements of Cash Flows For the years ended December 31, 2017 and 2016 (dollars in thousands) 2017 2016 Cash flows from operating activities Net income $ 2,427 $ 2,418 Adjustments to reconcile net income to net cash provided by operations: Equity in undistributed income of affiliate (1,855 ) (1,255 ) Bargain purchase gain 0 (891 ) Change in other assets 91 59 Change in other liabilities 37 (85 ) Net cash provided by operating activities 700 246 Cash flows from investing activities Net decrease in loans 0 1,002 Cash received in business combination 0 822 Net cash provided by investing activities 0 1,824 Cash flows from financing activities Cash paid for fractional shares 0 (5 ) Dividends paid (803 ) (473 ) Net cash used by financing activities (803 ) (478 ) Net (decrease) increase in cash and cash equivalents (103 ) 1,592 Cash and cash equivalents, beginning 1,621 29 Cash and cash equivalents, ending $ 1,518 $ 1,621

Organization - Additional Infor

Organization - Additional Information (Detail)	Jul. 01, 2016USD ($)	Dec. 31, 2017USD ($)
Business Acquisition [Line Items]
Date of incorporation		Nov. 2, 2015
Date of merger agreement entered		Nov. 6, 2015
Refinement period		1 year
Amounts reclassified to retained earnings from accumulated other comprehensive loss due to tax effect		$ 248,000
Purchased Performing Loans
Business Acquisition [Line Items]
Allowance for loan losses		$ 0
Grayson Bankshares, Inc.
Business Acquisition [Line Items]
Exchange ratio	1.76
Ownership percentage in newly issued shares	60.00%
Cardinal Bankshares Corporation
Business Acquisition [Line Items]
Exchange ratio	1.30
Ownership percentage in newly issued shares	40.00%
Allowance for loan losses	$ 0

Property and Equipment, Estimat

Property and Equipment, Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2017
Minimum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	10 years
Minimum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Maximum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	40 years
Maximum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	12 years

Accumulated Balances Related Co

Accumulated Balances Related Component of Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 55,466	$ 30,656
Amounts reclassified to retained earnings from other comprehensive loss due to tax rate change	248
Ending balance	57,182	55,466
Unrealized Gains and Losses on Available for Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(574)	(116)
Other comprehensive income (loss) before reclassifications	296	(218)
Amounts reclassified from accumulated other comprehensive loss	(160)	(240)
Amounts reclassified to retained earnings from other comprehensive loss due to tax rate change	(85)
Ending balance	(523)	(574)
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(780)	(608)
Other comprehensive income (loss) before reclassifications	(44)	(172)
Amounts reclassified from accumulated other comprehensive loss	0
Amounts reclassified to retained earnings from other comprehensive loss due to tax rate change	(163)
Ending balance	(987)	(780)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,354)	(724)
Other comprehensive income (loss) before reclassifications	252	(390)
Amounts reclassified from accumulated other comprehensive loss	(160)	(240)
Amounts reclassified to retained earnings from other comprehensive loss due to tax rate change	(248)
Ending balance	$ (1,510)	$ (1,354)

Business Combinations - Additio

Business Combinations - Additional Information (Detail) $ in Thousands	Jul. 01, 2016USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Bargain purchase gain			$ 0	$ 891
Pre-tax merger-related costs			748	1,483
Net interest income			20,800	15,834
Non interest income			$ 4,228	4,570
As Reported by Acquiror
Business Acquisition [Line Items]
Pre-tax merger-related costs				$ 1,500
Cardinal Bankshares Corporation
Business Acquisition [Line Items]
Exchange ratio	1.30
Bargain purchase gain	$ 891
Net interest income		$ 3,500
Non interest income		415
Net income		$ 133
Grayson Bankshares, Inc.
Business Acquisition [Line Items]
Exchange ratio	1.76

Business Combinations (Schedule

Business Combinations (Schedule of Assets Acquired and Liabilities Assumed, Fair Value Adjustments and Determination of Purchase Gain) (Detail) - USD ($) $ in Thousands		Jul. 01, 2016	Dec. 31, 2017	Dec. 31, 2016
Liabilities
Total consideration paid			$ 0	$ 23,500
Purchase gain			$ 0	$ 891
Cardinal Bankshares Corporation
Assets
Cash and cash equivalents		$ 11,698
Investment securities		59,005
Restricted equity securities		1,308
Loans		157,852
Allowance for loan losses		0
Cash value of life insurance		6,714
Property and equipment		6,423
Intangible assets		2,469
Accrued interest receivable		539
Other assets		7,127
Total assets acquired		253,135
Liabilities
Deposits		219,273
Borrowings		8,000
Accrued interest payable		35
Other liabilities		1,436
Total liabilities acquired		228,744
Net assets acquired		24,391
Total consideration paid		23,500
Purchase gain		891
Cardinal Bankshares Corporation | As Reported by Acquiror
Assets
Cash and cash equivalents		11,698
Investment securities		59,327
Restricted equity securities		1,308
Loans		164,044
Allowance for loan losses		(2,123)
Cash value of life insurance		6,714
Property and equipment		5,384
Accrued interest receivable		539
Other assets		2,450
Total assets acquired		249,341
Liabilities
Deposits		218,671
Borrowings		8,000
Accrued interest payable		35
Other liabilities		1,289
Total liabilities acquired		227,995
Cardinal Bankshares Corporation | Fair Value Adjustments
Assets
Investment securities	[1]	(322)
Loans	[2]	(6,192)
Allowance for loan losses	[3]	2,123
Property and equipment	[4]	1,039
Intangible assets	[5]	2,469
Other assets	[6]	4,677
Total assets acquired		3,794
Liabilities
Deposits	[7]	602
Other liabilities	[8]	147
Total liabilities acquired		$ 749
[1]	Reflects the opening fair value of securities portfolio, which was established as the new book basis of the portfolio.
[2]	Reflects the fair value adjustment based on the Company's third party valuation report.
[3]	Existing allowance for loan losses eliminated to reflect accounting guidance.
[4]	Estimated adjustment to Cardinal's real property based upon third-party appraisals and the Company's evaluation of equipment and other fixed assets.
[5]	Reflects the recording of the estimated core deposit intangible based on the Company's third party valuation report.
[6]	Recording of deferred tax asset generated by the net fair value adjustments (tax rate = 34%). Also recognizes partial reversal of Cardinal's deferred tax asset valuation allowance.
[7]	Estimated fair value adjustment to time deposits based on the Company's third party evaluation report on deposits assumed.
[8]	Reflects the fair value adjustment based on the Company's evaluation of acquired other liabilities.

Business Combinations (Schedu51

Business Combinations (Schedule of Assets and Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 22,875	$ 35,908	$ 24,815	$ 8,055
Investment securities	50,675	62,540	92,852
Restricted equity securities	1,388	1,149	2,279
Loans	424,871	411,968	402,652
Allowance for loan losses	(3,453)	(3,420)	(3,309)	(3,418)
Cash value of life insurance	17,348	16,850	16,836
Foreclosed assets	0	70	95
Property and equipment	17,646	17,970	17,971
Goodwill and other intangible assets	2,045	2,327	2,469
Accrued interest receivable	1,737	1,732	1,792
Other assets	9,864	5,890	12,171
Total assets	547,961	558,856	570,623
Liabilities
Deposits	488,441	499,387	493,538
Borrowings	0	0	18,000
Accrued interest payable	46	57	131
Other liabilities	2,292	3,946	2,582
Total Liabilities	490,779	503,390	514,251
Shareholders' Equity	$ 57,182	$ 55,466	56,372	$ 30,656
Grayson Bankshares, Inc.
Assets
Cash and cash equivalents			13,117
Investment securities			33,847
Restricted equity securities			971
Loans			244,800
Allowance for loan losses			(3,309)
Cash value of life insurance			10,122
Foreclosed assets			95
Property and equipment			11,548
Accrued interest receivable			1,253
Other assets			5,044
Total assets			317,488
Liabilities
Deposits			274,265
Borrowings			10,000
Accrued interest payable			96
Other liabilities			1,146
Total Liabilities			285,507
Shareholders' Equity			31,981
Cardinal Bankshares Corporation
Assets
Cash and cash equivalents			11,698
Investment securities			59,005
Restricted equity securities			1,308
Loans			157,852
Cash value of life insurance			6,714
Property and equipment			6,423
Goodwill and other intangible assets			2,469
Accrued interest receivable			539
Other assets			7,127
Total assets			253,135
Liabilities
Deposits			219,273
Borrowings			8,000
Accrued interest payable			35
Other liabilities			1,436
Total Liabilities			228,744
Shareholders' Equity			$ 24,391

Business Combinations (Suppleme

Business Combinations (Supplemental Pro Forma Information) (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)$ / sharesshares
Business Combinations [Abstract]
Net interest income	$ 19,620
Net income	$ 2,935	[1]
Basic and diluted weighted average shares outstanding | shares	5,021,376	[2]
Basic and diluted earnings per common share | $ / shares	$ 0.58
[1]	Supplemental pro forma net income includes the impact of certain fair value adjustments. Supplemental pro forma net income does not include assumptions on cost savings or the impact of merger-related expenses.
[2]	Weighted average shares outstanding includes the full effect of the common stock issued in connection with the Cardinal acquisition as of the earliest reporting date.

Restrictions on Cash - Addition

Restrictions on Cash - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Cash and Cash Equivalents [Abstract]
Daily average cash reserve requirement	$ 3.6	$ 4.6

Investment Securities (Amortize

Investment Securities (Amortized Cost and Aggregate Fair Value of Available for Sale Securities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Schedule of Available-for-sale Securities [Line Items]
Available for sale, amortized cost	$ 51,338	$ 63,410
Available for sale, unrealized gains	155	337
Available for sale, unrealized losses	(818)	(1,207)
Available for sale, fair value	50,675	62,540	$ 92,852
Government sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Available for sale, amortized cost		2,046
Available for sale, unrealized gains		236
Available for sale, unrealized losses		(73)
Available for sale, fair value		2,209
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale, amortized cost	28,780	36,021
Available for sale, unrealized gains	0	4
Available for sale, unrealized losses	(626)	(823)
Available for sale, fair value	28,154	35,202
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale, amortized cost	3,016	3,061
Available for sale, unrealized gains	0
Available for sale, unrealized losses	(80)	(87)
Available for sale, fair value	2,936	2,974
State and municipal securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale, amortized cost	19,542	22,282
Available for sale, unrealized gains	155	97
Available for sale, unrealized losses	(112)	(224)
Available for sale, fair value	$ 19,585	$ 22,155

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)Securities	Dec. 31, 2016USD ($)	Jul. 01, 2016USD ($)
Investments, Debt and Equity Securities [Abstract]
Restricted equity securities	$ 1,388,000	$ 1,149,000	$ 2,279,000
Percentage of debt securities with unrealized losses depreciated	2.05%
Number of debt securities | Securities	35
Proceeds from sales of investment securities available for sale	$ 8,700,000	55,100,000
Securities transferred from held to maturity portfolios or other sales of held to maturity securities to available for sale	0
Investment securities, pledged as collateral on public deposits and for other purposes	$ 11,200,000	$ 11,200,000

Investment Securities (Unrealiz

Investment Securities (Unrealized Losses and Related Fair Values in Company's Held to Maturity and Available for Sale Investment Securities Portfolios) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	$ 22,581	$ 45,515
Less than 12 months, unrealized losses	(378)	(1,025)
12 months or more, fair value	16,549	4,037
12 months or more, unrealized losses	(440)	(182)
Total, fair value	39,130	49,552
Total, unrealized losses	(818)	(1,207)
Government sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
12 months or more, fair value		1,924
12 months or more, unrealized losses		(73)
Total, fair value		1,924
Total, unrealized losses		(73)
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	15,791	31,759
Less than 12 months, unrealized losses	(324)	(789)
12 months or more, fair value	12,361	688
12 months or more, unrealized losses	(302)	(34)
Total, fair value	28,152	32,447
Total, unrealized losses	(626)	(823)
Corporate securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	1,506	1,548
Less than 12 months, unrealized losses	(10)	(12)
12 months or more, fair value	1,430	1,425
12 months or more, unrealized losses	(70)	(75)
Total, fair value	2,936	2,973
Total, unrealized losses	(80)	(87)
State and municipal securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	5,284	12,208
Less than 12 months, unrealized losses	(44)	(224)
12 months or more, fair value	2,758
12 months or more, unrealized losses	(68)
Total, fair value	8,042	12,208
Total, unrealized losses	$ (112)	$ (224)

Investment Securities (Gross Re

Investment Securities (Gross Realized Gains and Losses on Sale of Investment Securities) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Realized gains	$ 257	$ 369
Realized losses	(15)	(5)
Net realized gains on securities	$ 242	$ 364

Investment Securities (Schedule

Investment Securities (Scheduled Maturities of Securities Available for Sale) (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Available for sale securities, amortized cost
Due in one year or less, amortized cost	$ 729
Due after one year through five years, amortized cost	8,435
Due after five years through ten years, amortized cost	21,371
Due after ten years, amortized cost	20,803
Available for sale securities, amortized cost	51,338
Available for sale securities, fair value
Due in one year or less, fair value	730
Due after one year through five years, fair value	8,398
Due after five years through ten years, fair value	20,975
Due after ten years, fair value	20,572
Available for sale securities, fair value	$ 50,675

Major Components of Loans in Co

Major Components of Loans in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 424,871	$ 411,968	$ 402,652
Allowance for loan losses	(3,453)	(3,420)	$ (3,309)	$ (3,418)
Loans, net of allowance for loan losses	421,418	408,548
Commercial & agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	25,672	26,086
Allowance for loan losses	(282)	(210)		(136)
Commercial Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	125,661	128,515
Allowance for loan losses	(619)	(600)		(578)
Construction and Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	25,475	26,464
Allowance for loan losses	(239)	(319)		(344)
Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	33,353	33,531
Allowance for loan losses	(358)	(342)		(435)
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	199,120	187,188
Allowance for loan losses	(1,875)	(1,841)		(1,887)
Consumer & Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	15,590	10,184
Allowance for loan losses	$ (80)	$ (108)		$ (38)

Loans Receivable (Major Compone

Loans Receivable (Major Components of Loans, Net of Fair Value Adjustments, Acquired From Business Acquisition) (Detail) - Cardinal Bankshares Corporation $ in Thousands	Jul. 01, 2016USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	$ 157,852
Commercial & agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	15,897
Commercial Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	76,968
Construction and Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	7,800
Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	4,146
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	49,609
Consumer & Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired	$ 3,432

Loans Receivable - Additional I

Loans Receivable - Additional Information (Detail) - USD ($)		Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in impaired loans	[1]	$ 12,323,000	$ 13,320,000
Cardinal Bankshares Corporation | Purchased Credit Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in impaired loans				$ 0
[1]	Recorded investment is the loan balance, net of any charge-offs

Allowance for Loan Losses and62

Allowance for Loan Losses and Impaired Loans (Allowance for Loan Losses and Recorded Investment in Loans) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Allowance for loan losses:
Allowance for loan losses, beginning balance	$ 3,420	$ 3,418
Charge-offs	(318)	(214)
Recoveries	134	221
Provision	217	(5)
Allowance for loan losses, ending balance	3,453	3,420
Allowance for loan losses, ending balance: individually evaluated for impairment	91	241
Allowance for loan losses, ending balance: collectively evaluated for impairment	3,362	3,179
Loans outstanding, ending balance	424,871	411,968	$ 402,652
Loans outstanding, ending balance: individually evaluated for impairment	6,625	7,257
Loans outstanding, ending balance: collectively evaluated for impairment	418,246	404,711
Construction and Development
Allowance for loan losses:
Allowance for loan losses, beginning balance	319	344
Charge-offs	(33)	(20)
Recoveries	56	98
Provision	(103)	(103)
Allowance for loan losses, ending balance	239	319
Allowance for loan losses, ending balance: individually evaluated for impairment	0
Allowance for loan losses, ending balance: collectively evaluated for impairment	239	319
Loans outstanding, ending balance	25,475	26,464
Loans outstanding, ending balance: individually evaluated for impairment	0	580
Loans outstanding, ending balance: collectively evaluated for impairment	25,475	25,884
Farmland
Allowance for loan losses:
Allowance for loan losses, beginning balance	342	435
Charge-offs	(34)
Recoveries	0	59
Provision	50	(152)
Allowance for loan losses, ending balance	358	342
Allowance for loan losses, ending balance: individually evaluated for impairment	49	57
Allowance for loan losses, ending balance: collectively evaluated for impairment	309	285
Loans outstanding, ending balance	33,353	33,531
Loans outstanding, ending balance: individually evaluated for impairment	5,069	5,030
Loans outstanding, ending balance: collectively evaluated for impairment	28,284	28,501
Residential
Allowance for loan losses:
Allowance for loan losses, beginning balance	1,841	1,887
Charge-offs	(89)	(84)
Recoveries	23	22
Provision	100	16
Allowance for loan losses, ending balance	1,875	1,841
Allowance for loan losses, ending balance: individually evaluated for impairment	42	184
Allowance for loan losses, ending balance: collectively evaluated for impairment	1,833	1,657
Loans outstanding, ending balance	199,120	187,188
Loans outstanding, ending balance: individually evaluated for impairment	1,556	1,533
Loans outstanding, ending balance: collectively evaluated for impairment	197,564	185,655
Commercial Mortgage
Allowance for loan losses:
Allowance for loan losses, beginning balance	600	578
Charge-offs	(59)	(21)
Recoveries	0
Provision	78	43
Allowance for loan losses, ending balance	619	600
Allowance for loan losses, ending balance: individually evaluated for impairment	0
Allowance for loan losses, ending balance: collectively evaluated for impairment	619	600
Loans outstanding, ending balance	125,661	128,515
Loans outstanding, ending balance: individually evaluated for impairment	0	114
Loans outstanding, ending balance: collectively evaluated for impairment	125,661	128,401
Commercial & agricultural
Allowance for loan losses:
Allowance for loan losses, beginning balance	210	136
Charge-offs	(27)	(19)
Recoveries	33	8
Provision	66	85
Allowance for loan losses, ending balance	282	210
Allowance for loan losses, ending balance: individually evaluated for impairment	0
Allowance for loan losses, ending balance: collectively evaluated for impairment	282	210
Loans outstanding, ending balance	25,672	26,086
Loans outstanding, ending balance: individually evaluated for impairment	0
Loans outstanding, ending balance: collectively evaluated for impairment	25,672	26,086
Consumer & Other
Allowance for loan losses:
Allowance for loan losses, beginning balance	108	38
Charge-offs	(76)	(70)
Recoveries	22	34
Provision	26	106
Allowance for loan losses, ending balance	80	108
Allowance for loan losses, ending balance: individually evaluated for impairment	0
Allowance for loan losses, ending balance: collectively evaluated for impairment	80	108
Loans outstanding, ending balance	15,590	10,184
Loans outstanding, ending balance: individually evaluated for impairment	0
Loans outstanding, ending balance: collectively evaluated for impairment	$ 15,590	$ 10,184

Allowance for Loan Losses and63

Allowance for Loan Losses and Impaired Loans - Additional Information (Detail)		12 Months Ended
		Dec. 31, 2017USD ($)Loan	Dec. 31, 2016USD ($)Loan	Jul. 01, 2016USD ($)	Dec. 31, 2015USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Total of outstanding loans		$ 424,871,000	$ 411,968,000	$ 402,652,000
Investment in impaired loans	[1]	12,323,000	13,320,000
Investment in impaired loans, with no related allowance	[1]	3,722,000	4,355,000
Troubled debt restructured loans		5,700,000	6,100,000
Troubled debt restructured loans, related allowance		$ 303,000	$ 315,000
Loans modified that considered to be TDRs | Loan		3	7
Unallocated Financing Receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan losses		$ 0	$ 0
Collateral Pledged
Financing Receivable, Allowance for Credit Losses [Line Items]
Investment in impaired loans		3,700,000	4,000,000
Doubtful
Financing Receivable, Allowance for Credit Losses [Line Items]
Total of outstanding loans		0	0
Loss
Financing Receivable, Allowance for Credit Losses [Line Items]
Total of outstanding loans		0	0
Maximum
Financing Receivable, Allowance for Credit Losses [Line Items]
Troubled debt restructured loans					$ 250,000
Impaired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Troubled debt restructured loans		$ 8,600,000	$ 10,000,000
Term Concessions Granted Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of loans | Loan		3	7
Additional Funds Advanced Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of loans | Loan		0	2
[1]	Recorded investment is the loan balance, net of any charge-offs

Allowance for Loan Losses and64

Allowance for Loan Losses and Impaired Loans (Credit Risk Profile by Internally Assigned Grades) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	$ 424,871	$ 411,968	$ 402,652
Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	25,475	26,464
Farmland
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	33,353	33,531
Residential
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	199,120	187,188
Commercial Mortgage
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	125,661	128,515
Commercial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	25,672	26,086
Consumer & Other
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	15,590	10,184
Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	25,475	26,464
Real Estate Secured | Farmland
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	33,353	33,531
Real Estate Secured | Residential
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	199,120	187,188
Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	125,661	128,515
Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	25,672	26,086
Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	15,590	10,184
Pass
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	375,900	356,799
Pass | Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	24,612	24,659
Pass | Real Estate Secured | Farmland
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	23,935	23,201
Pass | Real Estate Secured | Residential
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	183,543	170,885
Pass | Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	106,102	105,317
Pass | Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	22,446	22,719
Pass | Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	15,262	10,018
Watch
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	35,687	36,167
Watch | Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	652	902
Watch | Real Estate Secured | Farmland
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	4,895	5,276
Watch | Real Estate Secured | Residential
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	12,464	14,081
Watch | Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	15,291	13,449
Watch | Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	2,057	2,333
Watch | Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	328	126
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	2,534	3,838
Special Mention | Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	0
Special Mention | Real Estate Secured | Farmland
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	74
Special Mention | Real Estate Secured | Residential
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	200
Special Mention | Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	1,611	3,353
Special Mention | Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	649	485
Special Mention | Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	0
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	10,750	15,164
Substandard | Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	211	903
Substandard | Real Estate Secured | Farmland
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	4,449	5,054
Substandard | Real Estate Secured | Residential
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	2,913	2,222
Substandard | Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	2,657	6,396
Substandard | Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	520	549
Substandard | Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment [Line Items]
Total of outstanding loans	$ 0	$ 40

Allowance for Loan Losses and65

Allowance for Loan Losses and Impaired Loans (Analysis of Nonaccrual and Past Due Loans) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 2,475	$ 1,994
Current	422,396	409,974
Total loans	424,871	411,968	$ 402,652
90+ Days Past Due and Still Accruing	0
Nonaccrual Loans	5,335	4,664
Construction and Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	25,475	26,464
Farmland
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	33,353	33,531
Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	199,120	187,188
Commercial Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	125,661	128,515
Commercial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	25,672	26,086
Consumer & Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	15,590	10,184
Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	227	390
Current	25,248	26,074
Total loans	25,475	26,464
90+ Days Past Due and Still Accruing	0
Nonaccrual Loans	226	647
Real Estate Secured | Farmland
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	496	343
Current	32,857	33,188
Total loans	33,353	33,531
90+ Days Past Due and Still Accruing	0
Nonaccrual Loans	3,610	3,310
Real Estate Secured | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,439	480
Current	197,681	186,708
Total loans	199,120	187,188
90+ Days Past Due and Still Accruing	0
Nonaccrual Loans	1,211	31
Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	194	678
Current	125,467	127,837
Total loans	125,661	128,515
90+ Days Past Due and Still Accruing	0
Nonaccrual Loans	194	640
Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	93	92
Current	25,579	25,994
Total loans	25,672	26,086
90+ Days Past Due and Still Accruing	0
Nonaccrual Loans	94	31
Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	26	11
Current	15,564	10,173
Total loans	15,590	10,184
90+ Days Past Due and Still Accruing	0
Nonaccrual Loans	0	5
30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	655	853
30 to 59 Days Past Due | Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
30 to 59 Days Past Due | Real Estate Secured | Farmland
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	188	343
30 to 59 Days Past Due | Real Estate Secured | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	395	413
30 to 59 Days Past Due | Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	25
30 to 59 Days Past Due | Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	70	67
30 to 59 Days Past Due | Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2	5
60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	358	281
60 to 89 Days Past Due | Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60 to 89 Days Past Due | Real Estate Secured | Farmland
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60 to 89 Days Past Due | Real Estate Secured | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	334	48
60 to 89 Days Past Due | Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	227
60 to 89 Days Past Due | Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0
60 to 89 Days Past Due | Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	24	6
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,462	860
90 Days or More Past Due | Real Estate Secured | Construction and Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	227	390
90 Days or More Past Due | Real Estate Secured | Farmland
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	308
90 Days or More Past Due | Real Estate Secured | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	710	19
90 Days or More Past Due | Real Estate Secured | Commercial Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	194	426
90 Days or More Past Due | Non-Real Estate Secured | Commercial & agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	23	$ 25
90 Days or More Past Due | Non-Real Estate Secured | Consumer & Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 0

Allowance for Loan Losses and66

Allowance for Loan Losses and Impaired Loans (Impaired Loans) (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Recorded investment, with no related allowance	[1]	$ 3,722	$ 4,355
Unpaid principal balance, with no related allowance		3,782	4,355
Average recorded investment, with no related allowance		4,101	5,472
Interest income recognized, with no related allowance		20	50
Recorded investment, with allowance	[1]	8,601	8,965
Unpaid principal balance, with allowance		8,921	9,263
Related allowance		394	556
Average recorded investment, with allowance		10,262	9,735
Interest income recognized, with allowance		603	451
Recorded investment, totals	[1]	12,323	13,320
Unpaid principal balance, totals		12,703	13,618
Related allowance, totals		394	556
Average recorded investment, totals		14,363	15,207
Interest income recognized, totals		623	501
Construction and Development
Financing Receivable, Impaired [Line Items]
Recorded investment, with no related allowance	[1]	0	581
Unpaid principal balance, with no related allowance		0	581
Average recorded investment, with no related allowance		0	840
Interest income recognized, with no related allowance		0	17
Recorded investment, with allowance	[1]	361	193
Unpaid principal balance, with allowance		361	193
Related allowance		16	10
Average recorded investment, with allowance		718	201
Interest income recognized, with allowance		111	16
Recorded investment, totals	[1]	361	774
Unpaid principal balance, totals		361	774
Related allowance, totals		16	10
Average recorded investment, totals		718	1,041
Interest income recognized, totals		111	33
Farmland
Financing Receivable, Impaired [Line Items]
Recorded investment, with no related allowance	[1]	3,422	3,660
Unpaid principal balance, with no related allowance		3,456	3,660
Average recorded investment, with no related allowance		3,774	4,170
Interest income recognized, with no related allowance		10	18
Recorded investment, with allowance	[1]	1,936	1,679
Unpaid principal balance, with allowance		1,936	1,679
Related allowance		58	73
Average recorded investment, with allowance		2,224	1,705
Interest income recognized, with allowance		135	84
Recorded investment, totals	[1]	5,358	5,339
Unpaid principal balance, totals		5,392	5,339
Related allowance, totals		58	73
Average recorded investment, totals		5,998	5,875
Interest income recognized, totals		145	102
Residential
Financing Receivable, Impaired [Line Items]
Recorded investment, with no related allowance	[1]	300
Unpaid principal balance, with no related allowance		300
Average recorded investment, with no related allowance		300	347
Interest income recognized, with no related allowance		8	10
Recorded investment, with allowance	[1]	5,647	6,138
Unpaid principal balance, with allowance		5,832	6,300
Related allowance		284	423
Average recorded investment, with allowance		6,209	6,629
Interest income recognized, with allowance		290	302
Recorded investment, totals	[1]	5,947	6,138
Unpaid principal balance, totals		6,132	6,300
Related allowance, totals		284	423
Average recorded investment, totals		6,509	6,976
Interest income recognized, totals		298	312
Commercial Mortgage
Financing Receivable, Impaired [Line Items]
Recorded investment, with no related allowance	[1]	0	114
Unpaid principal balance, with no related allowance		0	114
Average recorded investment, with no related allowance		0	115
Interest income recognized, with no related allowance		0	4
Recorded investment, with allowance	[1]	602	838
Unpaid principal balance, with allowance		737	974
Related allowance		33	44
Average recorded investment, with allowance		1,020	1,035
Interest income recognized, with allowance		54	39
Recorded investment, totals	[1]	602	952
Unpaid principal balance, totals		737	1,088
Related allowance, totals		33	44
Average recorded investment, totals		1,020	1,150
Interest income recognized, totals		54	43
Commercial & agricultural
Financing Receivable, Impaired [Line Items]
Recorded investment, with no related allowance	[1]	0
Unpaid principal balance, with no related allowance		26
Average recorded investment, with no related allowance		27
Interest income recognized, with no related allowance		0
Recorded investment, with allowance	[1]	55	113
Unpaid principal balance, with allowance		55	113
Related allowance		3	6
Average recorded investment, with allowance		89	155
Interest income recognized, with allowance		13	9
Recorded investment, totals	[1]	55	113
Unpaid principal balance, totals		81	113
Related allowance, totals		3	6
Average recorded investment, totals		116	155
Interest income recognized, totals		13	9
Consumer & Other
Financing Receivable, Impaired [Line Items]
Recorded investment, with no related allowance	[1]	0
Unpaid principal balance, with no related allowance		0
Average recorded investment, with no related allowance		0
Interest income recognized, with no related allowance		2	1
Recorded investment, with allowance	[1]	0	4
Unpaid principal balance, with allowance		0	4
Related allowance		0
Average recorded investment, with allowance		2	10
Interest income recognized, with allowance		0	1
Recorded investment, totals	[1]	0	4
Unpaid principal balance, totals		0	4
Related allowance, totals		0
Average recorded investment, totals		2	10
Interest income recognized, totals		$ 2	$ 2
[1]	Recorded investment is the loan balance, net of any charge-offs

Allowance for Loan Losses and67

Allowance for Loan Losses and Impaired Loans (Troubled Debt Restructurings) (Detail) $ in Thousands		12 Months Ended
		Dec. 31, 2017USD ($)Loan	Dec. 31, 2016USD ($)Loan
Financing Receivable, Modifications [Line Items]
TDRs identified during the period, number of contracts | Loan		3	7
TDRs identified during the period, pre-modification outstanding recorded investment		$ 346	$ 709
TDRs identified during the period, post-modification outstanding recorded investment		$ 346	$ 738
TDRs identified in last twelve months that subsequently defaulted, number of contracts | Loan	[1]	0	2
TDRs identified in last twelve months that subsequently defaulted, pre-modification outstanding recorded investment	[1]	$ 0	$ 144
TDRs identified in last twelve months that subsequently defaulted, post-modification outstanding recorded investment	[1]	$ 0	$ 150
Construction and Development
Financing Receivable, Modifications [Line Items]
TDRs identified during the period, number of contracts | Loan		0
TDRs identified during the period, pre-modification outstanding recorded investment		$ 0
TDRs identified during the period, post-modification outstanding recorded investment		$ 0
TDRs identified in last twelve months that subsequently defaulted, number of contracts | Loan	[1]	0
TDRs identified in last twelve months that subsequently defaulted, pre-modification outstanding recorded investment	[1]	$ 0
TDRs identified in last twelve months that subsequently defaulted, post-modification outstanding recorded investment	[1]	$ 0
Farmland
Financing Receivable, Modifications [Line Items]
TDRs identified during the period, number of contracts | Loan		2	2
TDRs identified during the period, pre-modification outstanding recorded investment		$ 298	$ 144
TDRs identified during the period, post-modification outstanding recorded investment		$ 298	$ 150
TDRs identified in last twelve months that subsequently defaulted, number of contracts | Loan	[1]	0	2
TDRs identified in last twelve months that subsequently defaulted, pre-modification outstanding recorded investment	[1]	$ 0	$ 144
TDRs identified in last twelve months that subsequently defaulted, post-modification outstanding recorded investment	[1]	$ 0	$ 150
Residential
Financing Receivable, Modifications [Line Items]
TDRs identified during the period, number of contracts | Loan		1	5
TDRs identified during the period, pre-modification outstanding recorded investment		$ 48	$ 565
TDRs identified during the period, post-modification outstanding recorded investment		$ 48	$ 588
TDRs identified in last twelve months that subsequently defaulted, number of contracts | Loan	[1]	0
TDRs identified in last twelve months that subsequently defaulted, pre-modification outstanding recorded investment	[1]	$ 0
TDRs identified in last twelve months that subsequently defaulted, post-modification outstanding recorded investment	[1]	$ 0
Commercial Mortgage
Financing Receivable, Modifications [Line Items]
TDRs identified during the period, number of contracts | Loan		0
TDRs identified during the period, pre-modification outstanding recorded investment		$ 0
TDRs identified during the period, post-modification outstanding recorded investment		$ 0
TDRs identified in last twelve months that subsequently defaulted, number of contracts | Loan	[1]	0
TDRs identified in last twelve months that subsequently defaulted, pre-modification outstanding recorded investment	[1]	$ 0
TDRs identified in last twelve months that subsequently defaulted, post-modification outstanding recorded investment	[1]	$ 0
Commercial & agricultural
Financing Receivable, Modifications [Line Items]
TDRs identified during the period, number of contracts | Loan		0
TDRs identified during the period, pre-modification outstanding recorded investment		$ 0
TDRs identified during the period, post-modification outstanding recorded investment		$ 0
TDRs identified in last twelve months that subsequently defaulted, number of contracts | Loan	[1]	0
TDRs identified in last twelve months that subsequently defaulted, pre-modification outstanding recorded investment	[1]	$ 0
TDRs identified in last twelve months that subsequently defaulted, post-modification outstanding recorded investment	[1]	$ 0
Consumer & Other
Financing Receivable, Modifications [Line Items]
TDRs identified during the period, number of contracts | Loan		0
TDRs identified during the period, pre-modification outstanding recorded investment		$ 0
TDRs identified during the period, post-modification outstanding recorded investment		$ 0
TDRs identified in last twelve months that subsequently defaulted, number of contracts | Loan	[1]	0
TDRs identified in last twelve months that subsequently defaulted, pre-modification outstanding recorded investment	[1]	$ 0
TDRs identified in last twelve months that subsequently defaulted, post-modification outstanding recorded investment	[1]	$ 0
[1]	Loans past due 30 days or more are considered to be in default.

Allowance for Loan Losses and68

Allowance for Loan Losses and Impaired Loans (Troubled Debt Restructurings) (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
TDRs identified in last twelve months that subsequently defaulted, period to consider the loan to be default	30 days	30 days

Property and Equipment (Compone

Property and Equipment (Components of Property and Equipment and Total Accumulated Depreciation) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 29,430	$ 28,447
Less accumulated depreciation	(11,784)	(10,477)
Property and equipment, net	17,646	17,970	$ 17,971
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,267	4,145
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,950	14,668
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 10,213	$ 9,634

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 1,315	$ 883

Cash Value of Life Insurance -

Cash Value of Life Insurance - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Policyholders Account In Life Insurance Business [Abstract]
Cash value of life insurance	$ 17,348	$ 16,850	$ 16,836

Intangible Assets (Schedule of

Intangible Assets (Schedule of Core Deposit Intangible Assets) (Detail) - Core Deposits - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 2,469	$ 2,469
Accumulated amortization	424	142
Net book value	$ 2,045	$ 2,327

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 282	$ 142

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Time deposits in denominations of more than $250,000	$ 13.5	$ 12.5

Deposits (Scheduled Maturities

Deposits (Scheduled Maturities of Time Deposits) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Scheduled Maturities of Time Deposits
2,018	$ 63,799
2,019	25,183
2,020	21,044
2,021	22,112
2,022	15,587
Total	$ 147,725	$ 167,355

Short-Term Debt - Additional In

Short-Term Debt - Additional Information (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Debt classified as short-term	$ 0	$ 0
Unsecured lines of credit
Short-term Debt [Line Items]
Lines of credit, established amount	28,000,000
Unsecured lines of credit | Federal Home Loan Bank [Member]
Short-term Debt [Line Items]
Lines of credit, maximum borrowing ability	$ 136,500,000

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Debt Disclosure [Abstract]
Long-term debt outstanding	$ 0	$ 0	$ 18,000

Financial Instruments (Schedule

Financial Instruments (Schedule of Carrying Amount, Fair Value, and Placement in Fair Value Hierarchy of Company's Financial Instruments, Excluding Financial Instruments, which the Carrying Amount Approximates Fair Value) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial Instruments-Assets
Net Loans	$ 421,418	$ 408,548
Financial Instruments - Liabilities
Time Deposits	147,725	167,355
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Net Loans	417,229	405,876
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Time Deposits	144,656	165,257
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Net Loans	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Time Deposits	0
Significant Other Observable Inputs (Level 2)
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Net Loans	416,426	405,410
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Time Deposits	144,656	165,257
Significant Unobservable Inputs (Level 3)
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Net Loans	803	$ 466
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Time Deposits	$ 0

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)Derivative	Dec. 31, 2016USD ($)Derivative
Transfers From (To) Parent [Abstract]
Number of derivative instruments | Derivative	0	0
Fair value of liabilities, recurring basis	$ 0	$ 0
Fair value assets transfer from level 1 to level 2	0	0
Fair value assets transfer from level 2 to level 1	0	0
Fair value of liabilities, recurring basis	$ 0	$ 0

Financial Instruments (Schedu80

Financial Instruments (Schedule of Assets Recorded at Fair Value on Recurring Basis) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	$ 50,675	$ 62,540
Government sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis		2,209
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	28,154	35,202
Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	2,936	2,974
State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	19,585	22,155
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	50,675	62,540
Significant Other Observable Inputs (Level 2) | Government sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis		2,209
Significant Other Observable Inputs (Level 2) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	28,154	35,202
Significant Other Observable Inputs (Level 2) | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	2,936	2,974
Significant Other Observable Inputs (Level 2) | State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	19,585	$ 22,155
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	0
Significant Unobservable Inputs (Level 3) | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	0
Significant Unobservable Inputs (Level 3) | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	0
Significant Unobservable Inputs (Level 3) | State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, recurring basis	$ 0

Financial Instruments (Schedu81

Financial Instruments (Schedule of Assets Recorded at Fair Value on Nonrecurring Basis) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	$ 803	$ 536
Impaired Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	803	466
Foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	0	70
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Impaired Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	0
Significant Other Observable Inputs (Level 2) | Impaired Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	0
Significant Other Observable Inputs (Level 2) | Foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	803	536
Significant Unobservable Inputs (Level 3) | Impaired Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	803	466
Significant Unobservable Inputs (Level 3) | Foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets, nonrecurring basis	$ 0	$ 70

Financial Instruments (Assets M

Financial Instruments (Assets Measured at Fair Value on a Recurring or Non-Recurring Basis and Significant Unobservable Inputs Used in Fair Value Measurements) (Detail) - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Impaired Loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation Technique	Appraised Value/Discounted Cash Flows/Market Value of Note
Significant Unobservable Inputs		Discounts to reflect current market conditions, ultimate collectability, and estimated costs to sell
Fair Value	$ 803	$ 466
Impaired Loans | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General Range of Significant Unobservable Input Values	0.00%
Impaired Loans | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General Range of Significant Unobservable Input Values	10.00%
Other Real Estate Owned
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation Technique	Appraised Value/Comparable Sales/Other Estimates from Independent Sources
Significant Unobservable Inputs		Discounts to reflect current market conditions and estimated costs to sell
Fair Value	$ 0	$ 70
Other Real Estate Owned | Minimum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General Range of Significant Unobservable Input Values	0.00%
Other Real Estate Owned | Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]
General Range of Significant Unobservable Input Values	10.00%

Employee Benefit Plans (Summary

Employee Benefit Plans (Summary of Plan's Funded Status) (Detail) - Grayson Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Change in benefit obligation
Benefit obligation at beginning of year	$ 4,783	$ 4,645
Interest cost	191	196
Actuarial (gain) loss	637	227
Benefits paid	(380)	(306)
Settlement (gain) loss	(8)	21
Benefit obligation at end of year	5,223	4,783
Change in plan assets
Fair value of plan assets at beginning of year	7,894	7,722
Actual return on plan assets	999	478
Benefits paid	(380)	(306)
Fair value of plan assets at end of year	8,513	7,894
Funded status at the end of the year	$ 3,290	$ 3,111

Employee Benefit Plans (Amounts

Employee Benefit Plans (Amounts Recognized in Balance Sheet) (Detail) - Grayson Plan - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Amounts recognized in the Balance Sheet
Plan benefit cost	$ 4,539	$ 4,292
Unrecognized net actuarial loss	(1,249)	(1,181)
Amount recognized in other assets	$ 3,290	$ 3,111

Employee Benefit Plans (Amoun85

Employee Benefit Plans (Amounts Recognized in Accumulated Comprehensive Income (Loss) (Detail) - Grayson Plan - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Amounts recognized in accumulated comprehensive income (loss)
Unrecognized net actuarial loss	$ (1,249)	$ (1,181)
Deferred taxes	262	401
Amount recognized in accumulated comprehensive income (loss), net	$ (987)	$ (780)

Employee Benefit Plans (Prepaid

Employee Benefit Plans (Prepaid Benefit Detail) (Detail) - Grayson Plan - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Prepaid benefit detail
Benefit obligation	$ (5,223)	$ (4,783)	$ (4,645)
Fair value of assets	8,513	7,894	$ 7,722
Unrecognized net actuarial loss	1,249	1,181
Prepaid benefit cost	$ 4,539	$ 4,292

Employee Benefit Plans (Compone

Employee Benefit Plans (Components of Net Periodic Pension Cost) (Detail) - Grayson Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Components of net periodic pension cost
Interest cost	$ 191	$ 196
Expected return on plan assets	(552)	(558)
Recognized net loss due to settlement	86	57
Recognized net actuarial loss	28	10
Net periodic benefit expense	$ (247)	$ (295)

Employee Benefit Plans (Summa88

Employee Benefit Plans (Summary of Plan, Additional Disclosure Information) (Detail) - Grayson Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Additional disclosure information
Accumulated benefit obligation	$ 5,223	$ 4,783
Vested benefit obligation	$ 5,223	$ 4,783
Discount rate used for net periodic pension cost	4.00%	4.25%
Discount rate used for disclosure	3.50%	4.00%
Expected return on plan assets	7.00%	7.25%
Rate of compensation increase
Average remaining service (years)	13 years	14 years

Employee Benefit Plans (Fair Va

Employee Benefit Plans (Fair Values of Pension Plan Assets, by Asset Category) (Detail) - Defined Benefit Pension Plan - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	$ 8,513	$ 7,894
Cash Equivalents and Short Term Investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Equities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	4,368	3,969
Fixed Income | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	4,145	3,925
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	8,513	7,894
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Cash Equivalents and Short Term Investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Equities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	4,368	3,969
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Fixed Income | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	4,145	$ 3,925
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Significant Other Observable Inputs (Level 2) | Cash Equivalents and Short Term Investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Significant Other Observable Inputs (Level 2) | Equities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Significant Other Observable Inputs (Level 2) | Fixed Income | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Significant Unobservable Inputs (Level 3) | Cash Equivalents and Short Term Investments
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Significant Unobservable Inputs (Level 3) | Equities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	0
Significant Unobservable Inputs (Level 3) | Fixed Income | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value	$ 0

Employee Benefit Plans (Estimat

Employee Benefit Plans (Estimated Future Benefit Payments) (Detail) - Defined Benefit Pension Plan $ in Thousands	Dec. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
2,018	$ 568
2,019	49
2,020	16
2,021	123
2,022	225
2023 - 2027	2,689
Defined Benefit Plan, Expected Future Benefit Payments, Total	$ 3,670

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, contributions by employer for 2018	$ 0
Bank of Floyd Plan
Defined Benefit Plan Disclosure [Line Items]
Plan expenses paid by bank	$ 58,000	$ 56,000
Fixed Income | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	50.00%
Equities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	50.00%

Employee Benefit Plans (Pension

Employee Benefit Plans (Pension Plan's Weighted-Average Asset Allocations, by Asset Category) (Detail)	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	100.00%	100.00%
Defined Benefit Pension Plan | Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	0.00%	0.00%
Fixed Income | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	50.00%
Fixed Income | Defined Benefit Pension Plan | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	49.00%	50.00%
Equities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	50.00%
Equities | Defined Benefit Pension Plan | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan target asset allocations	51.00%	50.00%

Employee Benefit Plans (Funded

Employee Benefit Plans (Funded Status (Market Value of Plan Assets Divided by Funding Target) as of July 1) (Detail)	Dec. 31, 2017	Dec. 31, 2016
Bank of Floyd Plan
Defined Benefit Plan Disclosure [Line Items]
Funded status (market value of plan assets divided by funding target) as of July 1	108.63%	109.78%

Deferred Compensation and Sup94

Deferred Compensation and Supplemental Executive Retirement Plans - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)EmployeeAge	Dec. 31, 2016USD ($)
Deferred compensation plans | Certain executive officers and members of the Board of Directors
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, payable period	10 years
Deferred compensation plans, payments beginning age | Age	65
Deferred compensation plans, liability accrued	$ 312,000	$ 362,000
Deferred compensation plans, changes in present value of future cash payments, discounted rate	8.00%
Deferred compensation plans | Certain executive officers and members of the Board of Directors | Minimum
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, aggregate annual payments	$ 1,992
Deferred compensation plans | Certain executive officers and members of the Board of Directors | Maximum
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, aggregate annual payments	37,200
Deferred compensation plans | Certain executive officers and members of the Board of Directors | Salary and benefits expense
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, expense charged against income	27,000	31,000
Skyline National Bank | Executive Officer | Minimum
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, aggregate annual payments	55,000
Skyline National Bank | Executive Officer | Maximum
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, aggregate annual payments	90,000
Skyline National Bank | Executive Officer | Salary and benefits expense
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, expense charged against income	36,000
Supplemental executive plans of Bank of Floyd | Former members of management
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plans, aggregate annual payments	$ 69,000
Deferred compensation plans, payable period	20 years
Deferred compensation plans, liability accrued	$ 805,000
Deferred compensation plans, expense charged against income	$ 32,000	$ 17,000
Deferred compensation plans, changes in present value of future cash payments, discounted rate	4.00%
Deferred compensation plans, number of employees covered | Employee	2
Deferred compensation plans, payments beginning term	Subsequent to the executive's last day of employment.

Income Taxes (Components of Inc

Income Taxes (Components of Income Tax Expense (Benefit)) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Current	$ 213	$ 21
Deferred	2,891	1,154
Total income tax expense	$ 3,104	$ 1,175

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Income Tax Expense Computed at Statutory Federal Income Tax Rate to Income Tax Expense (Benefit)) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax at statutory federal rate	$ 1,881	$ 1,222
Tax exempt interest income	(61)	(33)
Tax exempt insurance income	(151)	(163)
State income tax, net of federal benefit	9	16
Merger expenses	4	205
Bargain purchase gain	0	(303)
Merger related NOL adjustment	0	225
Other	(13)	6
Deferred tax asset re-measurement	1,435
Total income tax expense	$ 3,104	$ 1,175

Income Taxes (Significant Compo

Income Taxes (Significant Components of Net Deferred Tax Assets) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets
Allowance for loan losses	$ 482	$ 652
Acquired loan credit mark	842	1,710
Deferred compensation	335	569
Investment impairment charge recorded directly to stockholders' equity as a component of other comprehensive income	19	497
Minimum pension liability	262	402
Net operating loss carryforward	2,131	4,227
Alternative minimum tax credit carryforward	638	394
Net unrealized losses on securities available for sale	139	296
Nonaccrual interest income	217	358
Other	76	200
Deferred tax assets Gross	5,141	9,305
Deferred tax liabilities
Deferred loan origination costs	228	288
Core deposit intangible	433	798
Accrued pension costs	962	1,471
Depreciation	553	875
Accretion of discount on investment securities, net	0	1
Deferred tax liabilities Gross	2,176	3,433
Net deferred tax asset	$ 2,965	$ 5,872

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes Disclosure [Line Items]
Effect of statutory rate changes enacted		$ 1,435,000
Liability for uncertain tax position		$ 0
Income tax examination, year		2,014
Deferred tax assets, valuation allowance		$ 0	$ 0
Net operating loss carryforward subject to expiration		$ 10,100,000
Scenario, Plan [Member]
Income Taxes Disclosure [Line Items]
Statutory federal income tax rate	21.00%
Earliest Tax Year
Income Taxes Disclosure [Line Items]
Operating loss carryforwards, expiration year		2,031

Commitments and Contingencies99

Commitments and Contingencies (Summary of Bank's Commitments) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off balance sheet risk	$ 58,018	$ 54,667
Standby Letters of Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off balance sheet risk	1,106
Commitments to Extend Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off balance sheet risk	$ 56,912	$ 54,667

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
Maximum potential credits	$ 5,000,000

Regulatory Restrictions - Addit

Regulatory Restrictions - Additional Information (Detail) - USD ($) $ in Millions	Jan. 01, 2019	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Percentage of legal lending limit on capital and surplus		10.00%
Collateral requirements minimum percentage collateral to fair value of securities loans from subsidiary		20.00%
Legal lending limits on loans to an affiliate		$ 5.7
Common equity Tier 1 capital risk-weighted assets		12.33%	11.88%
Tier 1 capital to risk weighted assets		12.33%	11.88%
Total capital to risk weighted assets		13.14%	12.72%
Tier 1 leverage ratio		9.81%	9.01%
Common equity Tier 1 capital risk-weighted assets, effective rate including capital conservation buffer		4.50%	4.50%
Tier 1 capital to risk weighted assets, effective rate capital conservation buffer		6.00%	6.00%
Total capital to risk weighted assets, effective rate including capital conservation buffer		8.00%	8.00%
Common equity Tier 1 capital ratio to be categorized as well capitalized		6.50%	6.50%
Tier 1 capital ratio to be categorized as well capitalized		8.00%	8.00%
Total risk based capital ratio to be categorized as well capitalized		10.00%	10.00%
Tier 1 leverage ratio to be categorized as well capitalized		5.00%	5.00%
Current Regulatory Requirements
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk weight for certain high volatility commercial real estate acquisition, development and construction loans and for non-residential mortgage loans that are 90 days past due or otherwise in non-accrual status			150.00%
Credit conversion factor for the unused portion of a commitment with an original maturity of one year or less that is not unconditionally cancellable			20.00%
Risk weight for mortgage servicing and deferred tax assets that are not deducted from capital			250.00%
Previous Regulatory Requirements
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk weight for certain high volatility commercial real estate acquisition, development and construction loans and for non-residential mortgage loans that are 90 days past due or otherwise in non-accrual status			100.00%
Credit conversion factor for the unused portion of a commitment with an original maturity of one year or less that is not unconditionally cancellable			0.00%
Risk weight for mortgage servicing and deferred tax assets that are not deducted from capital			100.00%
Minimum
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk weight for equity exposures			0.00%
Maximum
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk weight for equity exposures			600.00%
Basel III
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer, percentage at the beginning stage				0.625%
Basel III | Scenario, Forecast
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer, percentage fully phased in stage	2.50%
Basel III | Minimum
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital risk-weighted assets			4.50%
Basel III | Minimum | Current Regulatory Requirements
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital to risk weighted assets			6.00%
Total capital to risk weighted assets			8.00%
Tier 1 leverage ratio			4.00%
Basel III | Minimum | Previous Regulatory Requirements
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital to risk weighted assets			4.00%
Total capital to risk weighted assets			8.00%
Tier 1 leverage ratio			4.00%
Basel III | Minimum | Fully Phased-in Period Regulatory Requirements
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital risk-weighted assets			4.50%
Tier 1 capital to risk weighted assets			6.00%
Total capital to risk weighted assets			8.00%
Tier 1 leverage ratio			4.00%
Capital conservation buffer, fully phased in date			Jan. 1, 2019
Common equity Tier 1 capital risk-weighted assets, capital conservation buffer			2.50%
Common equity Tier 1 capital risk-weighted assets, effective rate including capital conservation buffer			7.00%
Tier 1 capital to risk weighted assets, capital conservation buffer			2.50%
Tier 1 capital to risk weighted assets, effective rate capital conservation buffer			8.50%
Total capital to risk weighted assets, capital conservation buffer			2.50%
Total capital to risk weighted assets, effective rate including capital conservation buffer			10.50%
FDIA | Minimum
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital ratio to be categorized as well capitalized			6.50%
Tier 1 leverage ratio to be categorized as well capitalized with composite supervisory rating 1			3.00%
Total risk based capital ratio to be categorized as well capitalized			10.00%
Tier 1 leverage ratio to be categorized as well capitalized			5.00%
FDIA | Minimum | Current Regulatory Requirements
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital ratio to be categorized as well capitalized			8.00%
FDIA | Minimum | Previous Regulatory Requirements
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital ratio to be categorized as well capitalized			6.00%

Capital Requirements Actual Cap

Capital Requirements Actual Capital Amounts and Ratios (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Total Capital to Risk Weighted Assets, Actual Amount	$ 56,962	$ 53,657
Total Capital to Risk Weighted Assets, Actual Ratio	13.14%	12.72%
Total Capital to Risk Weighted Assets, Minimum For Capital Adequacy Purposes Amount	$ 34,688	$ 33,744
Total Capital to Risk Weighted Assets, Minimum For Capital Adequacy Purposes Ratio	8.00%	8.00%
Total Capital to Risk Weighted Assets, Minimum To Be Well Capitalized Amount	$ 43,360	$ 42,180
Total Capital to Risk Weighted Assets, Minimum To Be Well Capitalized Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets, Actual Amount	$ 53,483	$ 50,111
Tier 1 Capital to Risk Weighted Assets, Actual Ratio	12.33%	11.88%
Tier 1 Capital to Risk Weighted Assets, Minimum For Capital Adequacy Purposes Amount	$ 26,016	$ 25,308
Tier 1 Capital to Risk Weighted Assets, Minimum For Capital Adequacy Purposes Ratio	6.00%	6.00%
Tier 1 Capital to Risk Weighted Assets, Minimum To Be Well Capitalized Amount	$ 34,688	$ 33,744
Tier 1 Capital to Risk Weighted Assets, Minimum To Be Well Capitalized Ratio	8.00%	8.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Actual Amount	$ 53,483	$ 50,111
Common Equity Tier 1 Capital to Risk Weighted Assets, Actual Ratio	12.33%	11.88%
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum For Capital Adequacy Purposes Amount	$ 19,512	$ 18,981
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum For Capital Adequacy Purposes Ratio	4.50%	4.50%
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum To Be Well Capitalized Amount	$ 28,184	$ 27,417
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum To Be Well Capitalized Ratio	6.50%	6.50%
Tier 1 Capital to Average Assets, Actual Amount	$ 53,483	$ 50,111
Tier 1 Capital to Average Assets, Actual Ratio	9.81%	9.01%
Tier 1 Capital to Average Assets, Minimum For Capital Adequacy Purposes Amount	$ 21,808	$ 22,242
Tier 1 Capital to Average Assets, Minimum For Capital Adequacy Purposes Ratio	4.00%	4.00%
Tier 1 Capital to Average Assets, Minimum To Be Well Capitalized Under Amount	$ 27,260	$ 27,803
Tier 1 Capital to Average Assets, Minimum To Be Well Capitalized Ratio	5.00%	5.00%

Loan Transactions with Related

Loan Transactions with Related Parties (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Related Party Transactions [Abstract]
Balance, beginning	$ 5,112	$ 1,741
New loans	1,388	841
Repayments	(1,228)	(695)
Change in relationship	(503)	3,225
Balance, ending	$ 4,769	$ 5,112

Transactions with Related Pa104

Transactions with Related Parties - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016
Related Party Transaction [Line Items]
Deposits outstanding amount	$ 488,441	$ 499,387	$ 493,538
Directors and executive officers
Related Party Transaction [Line Items]
Deposits outstanding amount	$ 10,700	$ 9,500

Parent Company Financial Inf105

Parent Company Financial Information (Balance Sheets) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Jul. 01, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 6,367	$ 7,215
Other assets	9,864	5,890	$ 12,171
Total assets	547,961	558,856	570,623
Liabilities
Other liabilities	2,292	3,946	2,582
Stockholders' Equity
Common stock	0
Surplus	26,166	26,166
Retained earnings	32,526	30,654
Accumulated other comprehensive loss	(1,510)	(1,354)
Total stockholders' equity	57,182	55,466	$ 56,372	$ 30,656
Total liabilities and stockholders' equity	547,961	558,856
Parkway Acquisition Corp.
Assets
Cash and due from banks	1,518	1,621
Investment in affiliate bank	55,115	53,168
Other assets	586	677
Total assets	57,219	55,466
Liabilities
Other liabilities	37
Stockholders' Equity
Common stock	0
Surplus	26,166	26,166
Retained earnings	32,526	30,654
Accumulated other comprehensive loss	(1,510)	(1,354)
Total stockholders' equity	57,182	55,466
Total liabilities and stockholders' equity	$ 57,219	$ 55,466

Parent Company Financial Inf106

Parent Company Financial Information (Statements of Income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Dividends from affiliate bank	$ 91	$ 63
Bargain purchase gain	0	891
Other income	326	164
Management and professional fees	430	327
Other expenses	2,125	2,280
Income before income taxes	5,531	3,593
Federal income tax expense	(3,104)	(1,175)
Net income	2,427	2,418
Parkway Acquisition Corp.
Condensed Financial Statements, Captions [Line Items]
Dividends from affiliate bank	803	573
Bargain purchase gain	0	891
Other income	1	7
Total income	804	1,471
Management and professional fees	35	56
Other expenses	36	27
Total expense	71	83
Income before income taxes	733	1,388
Federal income tax expense	(161)	(225)
Income before equity in undistributed income of affiliate	572	1,163
Equity in undistributed income of affiliate	1,855	1,255
Net income	$ 2,427	$ 2,418

Parent Company Financial Inf107

Parent Company Financial Information (Statements of Cash Flow) (Detail) - USD ($) $ in Thousands	Jul. 01, 2016	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net income		$ 2,427	$ 2,418
Adjustments to reconcile net income to net cash provided by operations:
Bargain purchase gain		0	(891)
Change in other assets		(4,127)	(209)
Change in other liabilities		(1,604)	1,462
Net cash provided by operating activities		98	3,579
Cash flows from investing activities
Net decrease in loans		(12,070)	(12,105)
Cash received in business combination		0	11,698
Net cash (used in) provided by investing activities		(1,610)	52,280
Cash flows from financing activities
Cash paid for fractional shares		0	(5)
Dividends paid		(803)	(473)
Net cash used in financing activities		(11,521)	(28,006)
Net (decrease) increase in cash and cash equivalents		(13,033)	27,853
Cash and cash equivalents, beginning		35,908	8,055
Cash and cash equivalents, ending	$ 24,815	22,875	35,908
Parkway Acquisition Corp.
Cash flows from operating activities
Net income		2,427	2,418
Adjustments to reconcile net income to net cash provided by operations:
Equity in undistributed income of affiliate		(1,855)	(1,255)
Bargain purchase gain		0	(891)
Change in other assets		91	59
Change in other liabilities		37	(85)
Net cash provided by operating activities		700	246
Cash flows from investing activities
Net decrease in loans		0	1,002
Cash received in business combination		0	822
Net cash (used in) provided by investing activities		0	1,824
Cash flows from financing activities
Cash paid for fractional shares		0	(5)
Dividends paid		(803)	(473)
Net cash used in financing activities		(803)	(478)
Net (decrease) increase in cash and cash equivalents		(103)	1,592
Cash and cash equivalents, beginning		1,621	29
Cash and cash equivalents, ending		$ 1,518	$ 1,621

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - Great State Bank	1 Months Ended
	Mar. 01, 2018	Dec. 31, 2017USD ($)
Termination fee payable on termination of merger agreement		$ 575,000
Subsequent Event
Exchange ratio	1.21