Riverview Financial (RIVE) 10-K 14 Mar 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 28, 2019	Jun. 30, 2018
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Registrant Name	Riverview Financial Corp
Entity Central Index Key	0001590799
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		7,801,010
Entity Public Float			$ 111,869,748
Trading Symbol	RIVE
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	true

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 16,708	$ 9,413
Interest-bearing deposits in other banks	37,108	16,373
Investment securities available-for-sale	104,677	93,201
Loans held for sale	637	254
Loans, net	893,184	955,971
Less: allowance for loan losses	6,348	6,306
Net loans	886,836	949,665
Premises and equipment, net	18,208	18,631
Accrued interest receivable	3,010	3,237
Goodwill	24,754	24,754
Intangible assets	3,509	4,376
Other assets	42,156	43,703
Total assets	1,137,603	1,163,607
Deposits:
Noninterest-bearing	162,574	155,895
Interest-bearing	842,019	870,585
Total deposits	1,004,593	1,026,480
Short-term borrowings		6,000
Long-term debt	6,892	13,233
Accrued interest payable	484	468
Other liabilities	11,724	11,170
Total liabilities	1,023,693	1,057,351
Stockholders' equity:
Common stock, no par value, authorized 20,000,000 shares, issued and outstanding: 2018; 9,121,555 shares; 2017; 9,069,363 shares	101,134	100,476
Capital surplus	332	423
Retained earnings	15,063	6,936
Accumulated other comprehensive loss	(2,619)	(1,579)
Total stockholders' equity	113,910	106,256
Total liabilities and stockholders' equity	$ 1,137,603	$ 1,163,607

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	9,121,555	9,069,363
Common stock, shares outstanding	9,121,555	9,069,363

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (LOSS) AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Interest and fees on loans:
Taxable	$ 47,733	$ 26,474
Tax-exempt	930	600
Interest and dividends on investment securities:
Taxable	2,276	2,155
Tax-exempt	320	228
Dividends		3
Interest on interest-bearing deposits in other banks	575	121
Interest on federal funds sold	20	12
Total interest income	51,854	29,593
Interest expense:
Interest on deposits	7,189	3,489
Interest on short-term borrowings	30	230
Interest on long-term debt	746	401
Total interest expense	7,965	4,120
Net interest income	43,889	25,473
Provision for loan losses	615	2,734
Net interest income after provision for loan losses	43,274	22,739
Noninterest income:
Bank owned life insurance investment income	776	449
Net gain on sale of investment securities available-for-sale	40	89
Total noninterest income	8,880	4,411
Noninterest expense:
Salaries and employee benefits expense	22,064	15,196
Net occupancy and equipment expense	4,153	3,271
Amortization of intangible assets	867	538
Net cost of operating other real estate	48	172
Other expenses	11,793	9,383
Total noninterest expense	38,925	28,560
Income (loss) before income taxes	13,229	(1,410)
Income tax expense	2,371	3,501
Net income (loss)	10,858	(4,911)
Other comprehensive income (loss):
Unrealized gain (loss) on investment securities available-for-sale	(1,012)	1,471
Reclassification adjustment for net gain on sales included in net income	(40)	(89)
Change in pension liability	(265)	(54)
Income tax expense (benefit) related to other comprehensive loss	(277)	451
Other comprehensive income (loss), net of income taxes	(1,040)	877
Comprehensive income (loss)	$ 9,818	$ (4,034)
Net income (loss):
Basic	$ 1.19	$ (0.91)
Diluted	$ 1.19	$ (0.91)
Average common shares outstanding:
Basic	9,096,142	5,260,537
Diluted	9,148,297	5,260,537
Dividends declared	$ 0.30	$ 0.55
Wealth Management Income [Member]
Noninterest income:
Noninterest income	$ 811	$ 832
Commission and Fees on Fiduciary Activities [Member]
Noninterest income:
Noninterest income	915	344
Service Charges, Fees and Commissions [Member]
Noninterest income:
Noninterest income	5,697	2,037
Mortgage Banking Income [Member]
Noninterest income:
Noninterest income	$ 641	$ 660

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2016	$ 41,920		$ 29,052	$ 220	$ 14,845	$ (2,197)
Net income (loss)	(4,911)				(4,911)
Other comprehensive income (loss), net of income taxes	877					877
Compensation cost of option grants	203			203
Issuance of 269,885 common shares	2,658		2,658
Issuance of 1,348,809 preferred shares	13,283	$ 13,283
Preferred shares converted into common shares		$ (13,283)	13,283
Issuance under ESPP, 401k and Dividend Reinvestment plans	504		504
Exercise of stock options	411		411
Tax Cuts and Jobs Act reclassification from other comprehensive income to retained earnings					259	(259)
Dividends declared	(3,257)				(3,257)
Issuance of 4,133,945 shares in fair value of consideration exchanged in merger	54,568		54,568
Balance at Dec. 31, 2017	106,256		100,476	423	6,936	(1,579)
Net income (loss)	10,858				10,858
Other comprehensive income (loss), net of income taxes	(1,040)					(1,040)
Compensation cost of option grants	9			9
Issuance under ESPP, 401k and Dividend Reinvestment plans	517		517
Exercise of stock options	41		141	(100)
Dividends declared	(2,731)				(2,731)
Balance at Dec. 31, 2018	$ 113,910		$ 101,134	$ 332	$ 15,063	$ (2,619)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Issuance of common shares	269,885
Issuance of preferred shares	1,348,809
Issuance under ESPP, 401k and Dividend Reinvestment plans, shares	40,032	40,791
Exercise of stock options, shares	35,516	38,833
Exercise of stock options, shares	11,401
Dividends declared, per share	$ 0.55	$ 0.30
Issuance of shares in fair value of consideration exchanged in merger, shares	$ 4,133,945

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 10,858	$ (4,911)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization of premises and equipment	1,219	702
Provision for loan losses	615	2,734
Stock based compensation	9	203
Net amortization of investment securities available-for-sale	824	540
Net cost of operation of other real estate owned	48	172
Net gain on sale of investment securities available-for-sale	(40)	(89)
Amortization of purchase adjustment on loans	(5,191)	(895)
Amortization of intangible assets	867	538
Deferred income taxes	2,340	3,501
Proceeds from sale of loans originated for sale	23,967	29,602
Net gain on sale of loans originated for sale	(641)	(660)
Loans originated for sale	(23,709)	(28,544)
Bank owned life insurance investment income	(776)	(449)
Accrued interest receivable	227	(617)
Other assets	568	(1,851)
Accrued interest payable	16	20
Other liabilities	554	(669)
Net cash provided by (used in) operating activities	11,755	(673)
Investment securities available-for-sale:
Purchases	(30,981)
Proceeds from repayments	12,844	5,760
Proceeds from sales	4,825	18,952
Proceeds from the sale of other real estate owned	174	767
Net decrease in restricted equity securities	252	859
Net (increase) decrease in loans	66,698	(163,790)
Net cash acquired in business combination		32,022
Business disposition (acquisitions), net of cash		329
Purchases of premises and equipment	(1,115)	(1,008)
Proceeds from sale of equipment		19
Purchase of bank owned life insurance	(21)	(5,023)
Net cash provided by (used in) investing activities	52,676	(111,113)
Cash flows from financing activities:
Net increase (decrease) in deposits	(21,887)	135,075
Net decrease in short-term borrowings	(6,000)	(25,500)
Repayment of long-term debt	(6,341)	(5,322)
Proceeds from long-term debt		600
Issuance under DRP, 401k and ESPP plans	517	504
Issuance of common stock		15,941
Proceeds from exercise of options	41	411
Cash dividends paid	(2,731)	(3,257)
Net cash provided by (used in) financing activities	(36,401)	118,452
Net increase in cash and cash equivalents	28,030	6,666
Cash and cash equivalents - beginning	25,786	19,120
Cash and cash equivalents - ending	53,816	25,786
Cash paid during the period for:
Interest	7,949	3,844
Federal income taxes	300
Noncash items from investing activities:
Other real estate acquired in settlement of loans	$ 707	358
Assets acquired excluding cash:
Investment securities available-for-sale		43,869
Loans, net		382,461
Accrued interest receivable		894
Premises and equipment		6,143
Other assets		21,730
Liabilities assumed:
Deposits		438,845
Long-term debt		6,801
Accrued interest payable		256
Other liabilities		$ 6,323

Summary of significant accounti

Summary of significant accounting policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of significant accounting policies	1. Summary of significant accounting policies: Nature of Operations: Riverview Financial Corporation, (the “Company” or “Riverview”), a bank holding company incorporated under the laws of Pennsylvania, provides a full range of financial services through its wholly-owned subsidiary, Riverview Bank (the “Bank”). On October 2, 2017, the Company announced the completion of its merger of equals with CBT Financial Corp. (“CBT”), effective October 1, 2017 pursuant to the Agreement and Plan of Merger between Riverview and CBT, dated April 19, 2017. On the effective date, CBT was merged with and into Riverview, with Riverview surviving (the “merger”). Additionally, CBT Bank, the wholly-owned subsidiary of CBT, merged with and into Riverview Bank, the wholly-owned subsidiary of Riverview, with Riverview Bank as the surviving institution. The Company’s financial results reflect the merger of CBT Bank with and into Riverview Bank under the purchase method of accounting, with the Company treated as the acquirer from an accounting and reporting purposes. As a result, the historical financial information included in the Company’s consolidated financial statements and related notes as reported in this Form 10-K is that of Riverview. Riverview Bank, with 28 full service offices and four limited purpose offices, is a full-service commercial bank offering a wide range of traditional banking services and financial advisory, insurance and investment services to individuals, municipalities and small to medium sized businesses in the Pennsylvania market areas of Berks, Blair, Centre, Clearfield, Dauphin, Huntingdon, Lebanon, Lycoming, Northumberland, Perry, Schuylkill and Somerset Counties. The Bank is state-chartered under the jurisdiction of the Pennsylvania Department of Banking and Securities and the Federal Deposit Insurance Corporation. The Bank’s primary product is loans to small- and medium-sized businesses. Other lending products include one-to-four family residential mortgages and consumer loans. The Bank primarily funds its loans by offering interest-bearing transaction accounts to commercial enterprises and individuals. Other deposit product offerings include certificates of deposits and various demand deposit accounts. The Bank offers a broad range of financial advisory, investment and fiduciary services through its wealth management and trust operating divisions. The wealth management and trust divisions did not meet the quantitative thresholds for required segment disclosure in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The Bank’s thirty community banking offices, all similar with respect to economic characteristics, share a majority of the following aggregation criteria: (i) products and services; (ii) operating processes; (iii) customer bases; (iv) delivery systems; and (v) regulatory oversight. Accordingly, they were aggregated into a single operating segment. The Company faces competition primarily from commercial banks, thrift institutions and credit unions within the Central, Northern and Southwestern Pennsylvania markets, many of which are substantially larger in terms of assets and capital. In addition, mutual funds and security brokers compete for various types of deposits, and consumer, mortgage, leasing and insurance companies compete for various types of loans and leases. Principal methods of competing for banking and permitted nonbanking services include price, nature of product, quality of service and convenience of location. The Company and the Bank are subject to regulations of certain federal and state regulatory agencies and undergo periodic examinations. Basis of presentation: The consolidated financial statements of the Company have been prepared in conformity with GAAP, Regulation S-X and reporting practices applied in the banking industry. All significant intercompany balances and transactions have been eliminated in consolidation. The Company also presents herein condensed parent company only financial information regarding Riverview Financial Corporation (“Parent Company”). Prior period amounts are reclassified when necessary to conform with the current year’s presentation. Such reclassifications had no effect on financial position or results of operations. The Company has evaluated events and transactions occurring subsequent to the balance sheet date of December 31, 2018, for items that should potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the date these consolidated financial statements were issued. Estimates: The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates that are particularly susceptible to material change in the near term relate to the determination of the allowance for loan losses, fair value of financial instruments, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of deferred tax assets, determination of other-than-temporary impairment losses on securities, impairment of goodwill and fair value of assets acquired and liabilities assumed in business combinations. Actual results could differ from those estimates. Investment securities: Investment securities are classified and accounted for as either held-to-maturity, available-for-sale, or trading account securities based on management’s intent at the time of acquisition. Management is required to reassess the appropriateness of such classifications at each reporting date. The Company classifies debt securities as held-to maturity when management has the positive intent and ability to hold such securities to maturity. Held-to-maturity securities are stated at cost, adjusted for amortization of premium and accretion of discount. Investment securities are designated as available-for-sale when they are to be held for indefinite periods of time as management intends to use such securities to implement asset/liability strategies or to sell them in response to changes in interest rates, prepayment risk, liquidity requirements, or other circumstances identified by management. Available-for-sale securities are reported at fair value, with unrealized gains and losses, net of income taxes, excluded from earnings and reported in a separate component of stockholders’ equity. Estimated fair values for investment securities are based on market prices from a national pricing service. Realized gains and losses are computed using the specific identification method and are included in noninterest income. Premiums are amortized, and discounts are accreted using the interest method over the contractual lives of investment securities. Investment securities that are bought and held principally for the purpose of selling them in the near term, in order to generate profits from market appreciation, are classified as trading account securities. Trading account securities are carried at market value. Interest on trading account securities is included in interest income. Profits or losses on trading account securities are included in noninterest income. All of the Company’s investment securities were classified as available-for-sale in 2018 and 2017. Transfers of securities between categories are recorded at fair value at the date of the transfer, with the accounting treatment of unrealized gains or losses determined by the category into which the security is transferred. Management evaluates each investment security at least quarterly, to determine if a decline in fair value below its amortized cost is an other-than-temporary impairment (“OTTI”), and more frequently when economic or market concerns warrant an evaluation. Factors considered in determining whether an other-than-temporary impairment was incurred include: (i) the length of time and the extent to which the fair value has been less than amortized cost; (ii) the financial condition and near-term prospects of the issuer; (iii) whether a decline in fair value is attributable to adverse conditions specifically related to the security or specific conditions in an industry or geographic area; (iv) the credit-worthiness of the issuer of the security; (v) whether dividend or interest payments have been reduced or have not been made; (vi) an adverse change in the remaining expected cash flows from the security such that the Company will not recover the amortized cost of the security; (vii) whether management intends to sell the security; and (viii) if it is more likely than not that management will be required to sell the security before recovery. If a decline is judged to be other-than-temporary, the individual security is written-down to fair value with the credit related component of the write-down included in earnings and the non-credit related component included in other comprehensive income or loss. The assessment of whether an other-than-temporary impairment exists involves a high degree of subjectivity and judgment and is based on information available to management at a point in time. Loans held for sale: Loans held for sale consist of one-to-four family residential mortgages originated and intended for sale in the secondary market with servicing rights released. The loans are carried in aggregate at the lower of cost or estimated market value, based upon current delivery prices in the secondary mortgage market. Gains or losses on the sale of these loans are recognized in noninterest income at the time of sale using the specific identification method. Loan origination fees, net of certain direct loan origination costs, are included in net gains or losses upon the sale of the related mortgage loan. These loans are generally sold without servicing rights retained and without recourse. Loans, net: Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at their outstanding unpaid principal balances, net of deferred fees or costs. Interest income is accrued on the principal amount outstanding. Loan origination fees, net of certain direct origination costs, are deferred and recognized over the contractual life of the related loan as an adjustment to yield using the effective interest method. Premiums and discounts on purchased loans are amortized as adjustments to interest income using the effective interest method. Delinquency fees are recognized in income when chargeable, assuming collectability is reasonably assured. Transfers of financial assets, which include loan participation sales, are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when: (i) the assets have been isolated from the Company; (ii) 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 (iii) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. The loan portfolio is segmented into commercial and retail loans. Commercial loans consist of commercial and commercial real estate loans. Retail loans consist of residential real estate and other consumer loans. The Company makes commercial loans for real estate development and other business purposes required by the customer base. The Company’s credit policies determine advance rates against the different forms of collateral that can be pledged against commercial loans. Typically, the majority of loans will be limited to a percentage of their underlying collateral values such as real estate values, equipment, eligible accounts receivable and inventory. Individual loan advance rates may be higher or lower depending upon the financial strength of the borrower and/or term of the loan. The assets financed through commercial loans are used within the business for its ongoing operation. Repayment of these kinds of loans generally comes from the cash flow of the business or the ongoing conversion of assets. Commercial real estate loans include long-term loans financing commercial properties. Repayment of these loans is dependent upon either the ongoing cash flow of the borrowing entity or the resale of or lease of the subject property. Commercial real estate loans typically require a loan to value of not greater than 80% and vary in terms. Commercial and commercial real estate loans generally have higher credit risk compared to residential mortgage loans and consumer loans, as they typically involve larger loan balances concentrated with single borrowers or groups of borrowers. In addition, the payment expectations on loans secured by income-producing properties typically depend on the successful operations of the related business and thus may be subject to a greater extent to adverse conditions in the real estate market and in the general economy. Loans secured by commercial real estate generally have larger balances and involve a greater degree of risk than one-to-four family residential mortgage loans. Of primary concern in commercial real estate lending is the borrower’s and any guarantor’s creditworthiness and the feasibility and cash flow potential of the financed project. Additional considerations include: location, market and geographic concentrations, loan to value, strength of guarantors and quality of tenants. Payments on loans secured by income properties often depend on successful operation and management of the properties. As a result, repayment of such loans may be subject, to a greater extent than residential real estate loans, to adverse conditions in the real estate market or the economy. To monitor cash flows on income properties, we require borrowers and loan guarantors, if any, to provide annual consolidated financial statements on commercial real estate loans and rent rolls where applicable. In reaching a decision on whether to make a commercial real estate loan, we consider and review a cash flow analysis of the borrower and guarantor, when applicable, and considers the net operating income of the property, the borrower’s expertise, credit history and profitability and the value of the underlying property. We have generally required that the properties securing these real estate loans have debt service coverage ratios, the ratio of earnings before debt service to debt service, of at least 1.2 times. An environmental report is obtained when the possibility exists that hazardous materials may have existed on the site, or the site may have been impacted by adjoining properties that handled hazardous materials. Residential mortgages, including home equity loans, are secured by the borrower’s residential real estate in either a first or second lien position. Residential mortgages have varying loan rates depending on the financial condition of the borrower and the loan to value ratio. Residential mortgages may have amortizations up to 30 years. Consumer loans include installment loans, car loans, and overdraft lines of credit. The majority of these loans are secured. Consumer loans may entail greater risk than do residential mortgage loans, particularly in the case of consumer loans that are unsecured or secured by assets that depreciate rapidly, such as motor vehicles. In the latter case, repossessed collateral for a defaulted consumer loan may not provide an adequate source of repayment for the outstanding loan and a small remaining deficiency often does not warrant further substantial collection efforts against the borrower. Consumer loan collections depend on the borrower’s continuing financial stability, and therefore are likely to be adversely affected by various factors, including job loss, divorce, illness or personal bankruptcy. Furthermore, the application of various federal and state laws, including federal and state insolvency laws, may limit the amount that can be recovered on such loans. Off-balance sheet financial instruments: In the ordinary course of business, the Company enters into off-balance sheet financial instruments consisting of commitments to extend credit, unused portions of lines of credit and standby letters of credit. These financial instruments are recorded in the consolidated financial statements when they are funded. Fees on commercial letters of credit and on unused available lines of credit are recorded as service charges, fees and commissions and are included in noninterest income when earned. The Company records an allowance for off-balance sheet credit losses, if deemed necessary, separately as a liability. Nonperforming assets: Nonperforming assets consist of nonperforming loans and other real estate owned. Nonperforming loans include nonaccrual loans, troubled debt restructured loans and accruing loans past due 90 days or more. Past due status is based on contractual terms of the loan. Generally, a loan is classified as nonaccrual when it is determined that the collection of all or a portion of interest or principal is doubtful or when a default of interest or principal has existed for 90 days or more, unless the loan is well secured and in the process of collection. When a loan is placed on nonaccrual, interest accruals are discontinued, and uncollected accrued interest is reversed against income in the current period. Interest collections after a loan has been placed on nonaccrual status are credited to the principal balance. Interest earned that would have been recognized is credited to income over the remaining life of the loan using the effective yield method if the nonaccrual loan is returned to performing status. A nonaccrual loan is returned to performing status when the loan is current as to principal and interest and has performed according to the contractual terms for a minimum of six months. Troubled debt restructured loans are loans with original terms, interest rate, or both, that have been modified as a result of a deterioration in the borrower’s financial condition and a concession has been granted that the Company would not otherwise consider. Unless on nonaccrual, interest income on these loans is recognized when earned, using the interest method. The Company offers a variety of modifications to borrowers that would be considered concessions. The modification categories offered can generally fall within the following categories: • Rate Modification — A modification in which the interest rate is changed to a below market rate. • Term Modification — A modification in which the maturity date, timing of payments or frequency of payments is changed. • Interest Only Modification — A modification in which the loan is converted to interest only payments for a period of time. • Payment Modification — A modification in which the dollar amount of the payment is changed, other than an interest only modification described above. • Combination Modification — Any other type of modification, including the use of multiple categories above. The Company segments loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. Loans are individually analyzed for credit risk by classifying them within the Company’s internal risk rating system. The Company’s risk rating classifications are defined as follows: • Pass — A loan to borrowers with acceptable credit quality and risk that is not adversely classified as Substandard, Doubtful, Loss or designated as Special Mention. • Special Mention — A loan that has potential weaknesses that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the institution’s credit position at some future date. Special Mention loans are not adversely classified since they do not expose the Company to sufficient risk to warrant adverse classification. • Substandard — A loan that is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. • Doubtful — A loan classified as Doubtful has all the weaknesses inherent in one classified Substandard with the added characteristic that the weaknesses make the collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. • Loss — A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable loan is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be effected in the future. Other real estate owned is comprised of properties acquired through foreclosure proceedings or in-substance foreclosures. A loan is classified as in-substance foreclosure when the Company has taken possession of the collateral regardless of whether formal foreclosure proceedings take place. Other real estate owned is included in other assets and recorded at fair value less cost to sell at the time of acquisition, establishing a new cost basis. Any excess of the loan balance over the recorded value is charged to the allowance for loan losses. Subsequent declines in the recorded values of the properties prior to their disposal and costs to maintain the assets are included in other expenses. Any gain or loss realized upon disposal of other real estate owned is included in noninterest expense. Allowance for loan losses: The allowance for loan losses represents management’s estimate of losses inherent in the loan portfolio as of the balance sheet date. The allowance for loan losses account is maintained through a provision for loan losses charged to earnings. Loans, or portions of loans, determined to be confirmed losses are charged against the allowance account and subsequent recoveries, if any, are credited to the account. A loss is considered confirmed when information available at the financial statement date indicates the loan, or a portion thereof, is uncollectible. Nonaccrual, troubled debt restructured, and loans deemed impaired at the time of acquisition are reviewed monthly to determine if carrying value reductions are warranted or if these classifications should be changed. Consumer loans are considered losses and charged-off when they are 120 days past due. Management evaluates the adequacy of the allowance for loan losses account quarterly. This assessment is based on past charge-off experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of underlying collateral, composition of the loan portfolio, current economic conditions and other relevant factors. This evaluation is inherently subjective as it requires material estimates that may be susceptible to significant revision as more information becomes available. Regulators, in reviewing the loan portfolio as part of the scope of a regulatory examination, may require the Company to increase its allowance for loan losses or take other actions that would require the Company to increase its allowance for loan losses. The allowance for loan losses is maintained at a level believed to be adequate to absorb probable credit losses related to specifically identified loans, as well as probable incurred losses inherent in the remainder of the loan portfolio as of the balance sheet date. The allowance for loan losses consists of an allocated element and an unallocated element. The allocated element consists of a specific allowance for impaired loans individually evaluated under Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 310, “Receivables,” and a formula portion for loss contingencies on those loans collectively evaluated under FASB ASC 450, “Contingencies.” A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. All amounts due according to the contractual terms means that both the contractual interest and principal payments of a loan will be collected as scheduled in the loan agreement. Factors considered by management in determining impairment include payment status, ability to pay and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. The Company recognizes interest income on impaired loans, including the recording of cash receipts for nonaccrual, restructured loans or accruing loans depending on the status of the impaired loan. Loans considered impaired under FASB ASC 310 are measured for impairment based on the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent. If the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent, is less than the recorded investment in the loan, a specific allowance for the loan will be established. The formula portion of the allowance for loan losses relates to large pools of smaller-balance homogeneous loans and those identified loans considered not individually impaired having similar characteristics as these loan pools. Loss contingencies for each of the major loan pools are determined by applying a total loss factor to the current balance outstanding for each individual pool. The total loss factor is comprised of a historical loss factor using a loss migration method plus qualitative factors, which adjust the historical loss factor for changes in trends, conditions and other relevant factors that may affect repayment of the loans in these pools as of the evaluation date. Loss migration involves determining the percentage of each pool that is expected to ultimately result in loss based on historical loss experience. Historical loss factors are based on the ratio of net loans charged-off to loans, net, for each of the major groups of loans evaluated and measured for impairment under FASB ASC 450. The historical loss factor for each pool is an average of the Company’s historical net charge-off ratio for the most recent rolling eight quarters. Management adjusts these historical loss factors by qualitative factors that represent a number of environmental risks that may cause estimated credit losses associated with the current portfolio to differ from historical loss experience. These environmental risks include: (i) changes in lending policies and procedures including underwriting standards and collection, charge-off and recovery practices; (ii) changes in the composition and volume of the portfolio; (iii) changes in national, local and industry conditions, including the effects of such changes on the value of underlying collateral for collateral-dependent loans; (iv) changes in the volume and severity of classified loans including past due, nonaccrual, troubled debt restructures and other loan modifications; (v) changes in the levels of, and trends in, charge-offs and recoveries; (vi) the existence and effect of any concentrations of credit and changes in the level of such concentrations; (vii) changes in the experience, ability and depth of lending management and other relevant staff; (viii) changes in the quality of the loan review system and the degree of oversight by the board of directors; and (ix) the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the current loan portfolio. Each environmental risk factor is assigned a value to reflect improving, stable or declining conditions based on management’s best judgment using relevant information available at the time of the evaluation. Adjustments to the factors are supported through documentation of changes in conditions in a narrative accompanying the allowance for loan loss calculation. Management revised its calculation for, and application of, qualitative factors applied to their identified segments of homogenous loan pools. Prior to the fourth quarter of 2018, management calculated separate and distinct qualitative factors for Riverview Bank and each of its three purchased portfolios as a result of loans previously acquired in business combinations. Management determined that it would calculate qualitative factors on a weighted average basis combined for Riverview Bank and all purchased portfolios for each identified segment of homogenous loan pools. This had the impact of reducing the overall rate of qualitative adjustment to historical losses but was offset by an increased level of reserve on acquired performing loans as a result of normal accretion of acquisition related fair value marks. This change in methodology did not have a material impact on the amount of the allowance for loan losses at December 31, 2018, the date of the change, as compared to the prior methodology. The unallocated element, if any, is used to cover inherent losses that exist as of the evaluation date, but which have not been identified as part of the allocated allowance using the above impairment evaluation methodology due to limitations in the process. One such limitation is the imprecision of accurately estimating the impact current economic conditions will have on historical loss rates. Variations in the magnitude of impact may cause estimated credit losses associated with the current portfolio to differ from historical loss experience, resulting in an allowance that is higher or lower than the anticipated level. Management establishes the unallocated element of the allowance by considering environmental risks similar to the ones used for determining the qualitative factors. Management continually monitors trends in historical and qualitative factors, including trends in the volume, composition and credit quality of the portfolio. The reasonableness of the unallocated element is evaluated through monitoring trends in its level to determine if changes from period to period are directionally consistent with changes in the loan portfolio. Management believes the level of the allowance for loan losses was adequate to absorb probable credit losses as of December 31, 2018. Premises and equipment, net: Land is stated at cost. Premises, equipment and leasehold improvements are stated at cost less accumulated depreciation and amortization. The cost of routine maintenance and repairs is expensed as incurred. The cost of major replacements, renewals and betterments is capitalized. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation and amortization are eliminated, and any resulting gain or loss is reflected in noninterest income. Depreciation and amortization are computed principally using the straight-line method based on the following estimated useful lives of the related assets, or in the case of leasehold improvements, to the expected terms of the leases, if shorter: Premises and leasehold improvements 7 – 50 years Leasehold improvements 10 – 30 years Furniture, fixtures and equipment 3 – 10 years Business combinations, goodwill and other intangible assets, net: The Company accounts for its acquisitions using the purchase accounting method. Purchase accounting requires the total purchase price to be allocated

Merger accounting

Merger accounting	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Merger accounting	2. Merger accounting: On April 20, 2017, the Company and CBT announced the execution of a definitive merger agreement, providing for the merger of CBT with and into the Company. Immediately following the holding company merger, CBT Bank merged with and into Riverview Bank, the wholly-owned subsidiary of Riverview. This merger became effective prior to the start of business on October 1, 2017. Pursuant to the terms of the merger agreement, the merger was effected by the issuance of shares of Riverview stock to CBT shareholders. Each share of CBT common stock was converted into the right to receive 2.86 shares of Riverview common stock, with cash paid in lieu of fractional shares. The merger provided an expanded geographic footprint for the Company and increased the size of the balance sheet wherein the combined companies can realize economies of scale and other operating efficiencies. The merger has been accounted for using the acquisition method of accounting. To determine the accounting treatment of the merger, management utilized the following factors in concluding that Riverview is considered to be the accounting acquirer: • The roles of the Chief Executive Officer and President of the post-combination entity has been assumed by the executive officers of Riverview; • After the closing of the merger and as a result of the fixed share exchange ratio of 2.86 shares of Riverview common stock for each CBT common share, the former CBT shareholders, as a group, held approximately 45.8 percent of the outstanding shares of Riverview’s stock; and • Riverview contributed greater than fifty percent of the total assets and tangible equity to the combined entity. Based on consideration of all the relevant facts and circumstances of the merger, including the above factors, for accounting purposes, Riverview is considered to have acquired CBT in this transaction with the surviving legal entity operating under Riverview’s Articles of Incorporation. As a result, the historical financial statements of the combined company are the historical financial statements of Riverview. The assets and liabilities of CBT as of the effective date of the merger were recorded at their respective estimated fair values and added to those of Riverview. The excess of purchase price over the net estimated fair values of the acquired assets and liabilities of CBT Financial was allocated to all identifiable intangible assets. The remaining excess was allocated to goodwill. The goodwill resulting from the merger will not be amortized to expense, but instead will be reviewed for impairment at least annually. To the extent goodwill is impaired, its carrying value would be written down to its implied fair value and a charge would be made to earnings. Customer related intangibles and other intangibles with definite useful lives will be amortized to expense over their estimated useful lives. These financial statements will reflect the results attributable to the acquired operations of CBT, as the acquired company for accounting purposes, beginning on the effective date of the merger. The Company utilized the closing price of its common stock on September 29, 2017, the last trading day prior to the merger, of $13.20 per share to determine the acquisition date fair value of the consideration transferred. The acquired assets and assumed liabilities were measured at fair value as of the acquisition date. In many cases, determining the fair value of the acquired assets and assumed liabilities required the Company to estimate cash flows expected to result from those assets and liabilities and to discount those cash flows at appropriate rates of interest, which required the utilization of significant estimates and judgment in accounting for the acquisition. As of October 1, 2017, goodwill totaled $19,675, which is equal to the excess of the consideration transferred over the fair value of the identifiable net assets acquired in connection with the merger. Goodwill recorded in the Merger resulted from the expected synergies of the combined operations of the newly merged entities as well as intangibles that do not qualify for separate recognition such as the acquired workforce. There was no tax-deductible goodwill in the transaction. Purchase Price Consideration in Common Stock: CBT shares outstanding exchanged 1,445,474 Exchange ratio 2.86 Riverview shares issued 4,134,056 Less: fractional shares issued to CBT shareholders 111 Riverview shares issued to CBT shareholders 4,133,945 Value assigned to Riverview shares $ 13.20 Purchase price $ 54,568 Purchase price consideration for fractional shares 1 Total Purchase Price 54,569 Net Assets Acquired: Cash and due from banks $ 32,022 Investment securities available-for-sale 43,869 Loans, net 382,461 Accrued interest receivable 894 Premises and equipment 6,143 Other assets 21,730 Deposits (438,845 ) Long-term debt (6,801 ) Accrued interest payable (256 ) Other liabilities (6,323 ) Net assets acquired 34,894 Goodwill resulting from merger $ 19,675 The estimated fair values of cash and due from banks, accrued interest receivable, other assets, accrued interest payable and other liabilities approximate their stated values. The estimated fair values of the investment securities available-for-sale were calculated primarily using level 2 inputs. The prices for these instruments are obtained through an independent pricing service and are derived from market quotations and matrix pricing. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. Management reviewed the data and assumptions used in pricing the securities to ensure the highest level of significant inputs are derived from market observable data. Land and buildings included in premises and equipment, net, and real estate acquired through foreclosure included in other assets were primarily valued based on appraised collateral values. The Company prepared an internal market rent analysis to compare the lease contract obligations to comparable market rental rates. The Company believed that the leased contract rates were in a reasonable range of market rental rates and concluded that no fair value adjustment related to leasehold interest was necessary. The most significant fair value determination related to the valuation of acquired loans using level 3 input. The business combination resulted in the acquisition of loans with and without evidence of credit quality deterioration. Fair values are based on a discounted cash flow methodology that involves assumptions and judgments as to credit risk, expected life time losses, environmental factors, collateral values, discount rates, expected payments and expected prepayments. Specifically, the Company prepared three separate loan fair value adjustments that it believed a market participant might employ in estimating the entire fair value adjustment necessary under ASC 820-10 for the acquired loan portfolio. The three-separate fair valuation methodologies employed are: 1) an interest rate loan fair value adjustment; 2) a general credit fair value adjustment; and 3) a specific credit fair value adjustment for purchased credit impaired loans subject to ASC 310-30 procedures. The acquired loans were recorded at fair value at the acquisition date without carryover of CBT Bank’s previously established allowance for loan losses. The fair value of the financial assets acquired included loans receivable with a gross amortized cost basis of $393,821. The table below illustrates the fair value adjustments made to the amortized cost basis to present a fair value of the loans acquired. The credit adjustment on purchased credit impaired loans was derived in accordance with ASC 310-30 and represents the portion of the loan balances that has been deemed uncollectible based on the Company’s expectations of future cash flows for each respective loan. Gross amortized cost basis at October 1, 2017 $ 393,821 Interest rate fair value adjustment on pools of homogeneous loans 2,356 Credit fair value adjustment on pools of homogeneous loans (5,627 ) Credit and interest fair value adjustment on purchased credit impaired loans (8,089 ) Fair value of acquired loans at October 1, 2017 $ 382,461 CBT Bank’s loans, without evidence of credit deterioration, were assembled into groupings by characteristics such as loan type, term, collateral and rate and fair valued by discounting both expected principal and interest cash flows using an observable discount rate for similar instruments that a market participant would consider in determining fair value. The discount rate utilized was the average of market rates for similar loans obtained from various external data sources. Additionally, consideration was given to management’s best estimates of default rates and payment speeds in projecting the expected cash flows. A general credit risk fair value adjustment was calculated using a two-part general credit fair value analysis: (1) expected lifetime losses, using an average of historical losses of the Company, Riverview Bank and peer banks; and (2) an estimated fair value adjustment for qualitative factors related to general economic conditions and the risk related to lack of familiarity with the originator’s underwriting process. At acquisition, CBT Bank’s loan portfolio, without evidence of credit deterioration, was recorded at a current fair value of $373,868. CBT Bank’s loans were deemed impaired at the acquisition date if the Company did not expect to receive all contractually required cash flows due to concerns about credit quality. Management measured loan fair values based on loan file reviews including borrower financial statements or tax returns, appraised collateral values, expected cash flows and historical loss factors. Such loans were fair valued by discounting the expected cash flows at acquisition by an observable discount rate for similar instruments that a market participant would consider in determining fair value. The difference between contractually required payments at the acquisition date and cash flows expected to be collected was recorded as a nonaccretable difference. The following is a summary of the acquired impaired loans from the merger with CBT Bank: Acquired Impaired Loans Contractually required principal and interest at acquisition $ 16,682 Contractual cash flows not expected to be collected (nonaccretable discount) (6,033 ) Expected cash flows at acquisition 10,649 Interest component of expected cash flows (accretable discount) (2,056 ) Fair value of acquired loans $ 8,593 The Company recorded a core deposit intangible asset related to a value ascribed to demand, interest checking, money market and savings accounts, referred to as core deposits, acquired as part of the acquisition. The value assigned to the acquired core deposits represents the future economic benefit of the potential cost savings from acquiring the core deposits, net of operating expenses and including ancillary fee income, compared to the cost of obtaining alternative funds from available market sources. Management used estimates including the expected attrition rates of core deposit accounts, future interest rate levels, and the cost of servicing various depository products. The Company also recorded a trade name intangible asset using relief from the royalty method. The value assigned to the trade name represents the present value of the potential cost savings of paying a royalty for the use of a trade name. Both the core deposit intangible and trade name intangible are being amortized over an estimated useful life of 10 years. Time deposits are not considered to be core deposits as they are assumed to have a low expected average life upon acquisition. The fair value of time deposits was calculated as the present value of the certificates’ expected contractual payments discounted by market rates for similar time deposits. The Company assumed trust preferred subordinate debt with the merger. The fair value of the trust preferred subordinate debt was determined based upon an estimated fair value from an independent investment banking firm. The amount of revenue derived from CBT since the acquisition date included in the consolidated income statement for the year ended December 31, 2017 was approximately $6,724. In connection with the acquisition, Riverview incurred merger-related expenses relating to personnel, professional fees, occupancy and equipment and other costs of integrating and conforming acquired operations. Those expenses consisted largely of costs related to professional and consulting services, employment severance and early retirement charges, termination of contractual agreements and conversion of systems and/or integration of operations, initial communication expenses, printing and filing costs of completing the transaction and investment banking charges. A summary of merger related costs included in the consolidated statements of income for the years ended December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Accounting $ 119 Legal and consulting $ 49 623 Salaries and benefits 220 1,779 Equipment disposition and contract termination 3 634 System conversion/deconversion costs 71 368 Other 210 151 Total $ 553 $ 3,674 Pro Forma Condensed Combined Financial Information: The following table presents unaudited pro forma information as if the merger between Riverview and CBT had been completed on January 1, 2016. The pro forma information does not necessarily reflect the results of operations that would have occurred had the Company merged with CBT at the beginning of 2016. Supplemental pro forma earnings were adjusted to exclude merger related costs. The expected future amortizations of the various fair value adjustments were included beginning in 2016. Cost savings are not reflected in the unaudited pro forma amounts for the periods presented. The pro forma financial information does not include the impact of possible business model changes, nor does it consider any potential impacts of current market conditions on revenues, expense efficiencies, or other factors. Year ended December 31, 2017 Net interest income after loan loss provision $ 36,187 Noninterest income 7,871 Noninterest expense 39,092 Net income $ 4,966 Net income per share $ 0.95

Cash and due from banks

Cash and due from banks	12 Months Ended
	Dec. 31, 2018
Cash and Cash Equivalents [Abstract]
Cash and due from banks	3. Cash and due from banks: The Bank is required to maintain average reserve balances in cash or on deposit with the Federal Reserve Bank. There was no required reserve at December 31, 2018. The required reserve was $12,336 at December 31, 2017. In addition, the Bank’s other correspondents may require average compensating balances as part of their agreements to provide services. The Bank maintains balances with correspondent banks that may exceed federal insured limits, which management considers to be a normal business risk.

Investment securities

Investment securities	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Investment securities	4. Investment securities: The amortized cost and fair value of investment securities available-for-sale aggregated by investment category at December 31, 2018 and 2017 are summarized as follows: December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value State and municipals: Taxable $ 34,025 $ 145 $ 892 $ 33,278 Tax-exempt 12,970 2 196 12,776 Mortgage-backed securities: U.S. Government agencies 23,715 61 106 23,670 U.S. Government-sponsored enterprises 26,635 11 451 26,195 Corporate debt obligations 9,515 757 8,758 Total $ 106,860 $ 219 $ 2,402 $ 104,677 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value State and municipals: Taxable $ 35,352 $ 334 $ 684 $ 35,002 Tax-exempt 16,325 47 64 16,308 Mortgage-backed securities: U.S. Government agencies 22,908 3 94 22,817 U.S. Government-sponsored enterprises 10,218 19 148 10,089 Corporate debt obligations 9,529 544 8,985 Total $ 94,332 $ 403 $ 1,534 $ 93,201 The Company had a net unrealized loss of $1,725, net of deferred income taxes of $458 at December 31, 2018, and a net unrealized loss of $893, net of deferred income taxes of $238 at December 31, 2017. Proceeds from the sale of investment securities available-for-sale amounted to $4,825 in 2018. Gross gains of $40 and no gross losses were realized from the sale of securities in 2018. The income tax provision applicable to net realized gains amounted to $8 in 2018. In 2017, proceeds from the sale of investment securities available-for-sale amounted to $18,952, with gross gains of $166 and gross losses of $77 realized from the sale. The maturity distribution of the fair value, which is the net carrying amount of the debt securities classified as available-for-sale at December 31, 2018, is summarized as follows: December 31, 2018 Fair Value Within one year $ 2,283 After one but within five years 4,702 After five but within ten years 13,959 After ten years 33,868 54,812 Mortgage-backed securities 49,865 Total $ 104,677 Securities with a carrying value of $71,797 and $93,201 at December 31, 2018 and 2017, respectively, were pledged to secure public deposits as required or permitted by law. Securities and short-term investment activities are conducted with a diverse group of government entities, corporations and state and local municipalities. The counterparty’s creditworthiness and type of collateral is evaluated on a case-by-case basis. At December 31, 2018 and December 31, 2017, there were no significant concentrations of credit risk from any one issuer, with the exception of U.S. Government agencies and sponsored enterprises that exceeded 10.0 percent of stockholders’ equity. The fair value and gross unrealized losses of investment securities with unrealized losses for which an other-than-temporary impairment (“OTTI”) has not been recognized at December 31, 2018 and 2017, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position, are summarized as follows: Less Than 12 Months 12 Months or More Total December 31, 2018 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and municipals: Taxable $ 2,300 $ 4 $ 22,943 $ 888 $ 25,243 $ 892 Tax-exempt 1,950 32 9,556 164 11,506 196 Mortgage-backed securities: U.S. Government agencies 7,862 66 1,216 40 9,078 106 U.S. Government-sponsored enterprises 18,110 163 7,133 288 25,243 451 Corporate debt obligations 8,758 757 8,758 757 Total $ 30,222 $ 265 $ 49,606 $ 2,137 $ 79,828 $ 2,402 Less Than 12 Months 12 Months or More Total December 31, 2017 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and municipals: Taxable $ 4,757 $ 30 $ 20,185 $ 654 $ 24,942 $ 684 Tax-exempt 10,506 64 10,506 64 Mortgage-backed securities: U.S. Government agencies 16,746 87 193 7 16,939 94 U.S. Government-sponsored enterprises 4,294 23 4,174 125 8,468 148 Corporate debt obligations 3,800 200 5,185 344 8,985 544 Total $ 40,103 $ 404 $ 29,737 $ 1,130 $ 69,840 $ 1,534 The Company had 92 investment securities, consisting of 39 taxable state and municipal obligations, 22 tax-exempt municipal obligations, four corporate obligations and 27 mortgage-backed securities that were in unrealized loss positions at December 31, 2018. Of these securities, 35 taxable state and municipal obligations, 19 tax-exempt municipal obligations, four corporate obligations and 13 mortgage-backed securities were in a continuous unrealized loss position for twelve months or more. Management does not consider the unrealized losses on the debt securities as a result of changes in interest rates to be OTTI based on historical evidence that indicates the cost of these securities is recoverable within a reasonable period of time in relation to normal cyclical changes in the market rates of interest. Moreover, because there has been no material change in the credit quality of the issuers or other events or circumstances that may cause a significant adverse impact on the fair value of these securities, and management does not intend to sell these securities and it is unlikely that the Company will be required to sell these securities before recovery of their amortized cost basis, which may be maturity, the Company does not consider any of the unrealized losses to be OTTI at December 31, 2018. The Company had 88 investment securities, consisting of 34 taxable state and municipal obligations, 21 tax-exempt municipal obligations, four corporate obligations and 29 mortgage-backed securities that were in unrealized loss positions at December 31, 2017. Of these securities, 25 taxable state and municipal obligations, two corporate obligations and five mortgage-backed securities were in a continuous unrealized loss position for twelve months or more.

Loans, net and allowance for lo

Loans, net and allowance for loan losses	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Loans, net and allowance for loan losses	5. Loans, net and allowance for loan losses: The major classifications of loans outstanding, net of deferred loan origination fees and costs at December 31, 2018 and 2017 are summarized as follows. Net deferred loan costs were $1,026 and $863 at December 31, 2018 and 2017, respectively. December 31 2018 2017 Commercial $ 122,919 $ 140,116 Real estate: Construction 39,556 34,405 Commercial 497,597 526,230 Residential 221,115 240,626 Consumer 11,997 14,594 Total $ 893,184 $ 955,971 Loans outstanding to directors, executive officers, principal stockholders or to their affiliates totaled $9,555 and $9,465 at December 31, 2018 and 2017, respectively. Advances and repayments during 2018, totaled $1,096 and $1,006, respectively. As a result of the merger, the composition of the individuals considered related parties at December 31, 2017 changed. Loan balances totaling $5,244 were removed for individuals no longer considered related parties and $6,387 was included for individuals added as related parties in 2017. There were no related party loans that were classified as nonaccrual, past due, or restructured or considered a potential credit risk at December 31, 2018 and 2017. At December 31, 2018, the majority of the Company’s loans were at least partially secured by real estate located in Central and Southwestern Pennsylvania. Therefore, a primary concentration of credit risk is directly related to the real estate market in these areas. Changes in the general economy, local economy or in the real estate market could affect the ultimate collectability of this portion of the loan portfolio. Management does not believe there are any other significant concentrations of credit risk that could affect the loan portfolio. The changes in the allowance for loan losses account by major classification of loan for the years ended December 31, 2018 and 2017 are summarized as follows: Real Estate December 31, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance January 1, 2018 $ 1,206 $ 379 $ 2,963 $ 1,340 $ 37 $ 381 $ 6,306 Charge-offs (206 ) (104 ) (437 ) (747 ) Recoveries 11 6 31 126 174 Provisions 151 25 329 19 324 (233 ) 615 Ending balance $ 1,162 $ 404 $ 3,298 $ 1,286 $ 50 $ 148 $ 6,348 Real Estate December 31, 2017 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance January 1, 2017 $ 629 $ 160 $ 2,110 $ 789 $ 44 $ 3,732 Charge-offs (43 ) (78 ) (38 ) (58 ) (217 ) Recoveries 5 10 17 25 57 Provisions 615 297 843 572 26 $ 381 2,734 Ending balance $ 1,206 $ 379 $ 2,963 $ 1,340 $ 37 $ 381 $ 6,306 The allocation of the allowance for loan losses and the related loans by major classifications of loans at December 31, 2018 and December 31, 2017 is summarized as follows: Real Estate December 31, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Ending balance $ 1,162 $ 404 $ 3,298 $ 1,286 $ 50 $ 148 $ 6,348 Ending balance: individually evaluated for impairment 382 78 28 488 Ending balance: collectively evaluated for impairment 780 404 3,220 1,258 50 148 5,860 Ending balance: purchased credit impaired loans $ $ $ $ $ $ $ Loans receivable: Ending balance $ 122,919 $ 39,556 $ 497,597 $ 221,115 $ 11,997 $ $ 893,184 Ending balance: individually evaluated for impairment 1,249 1,643 2,146 5,038 Ending balance: collectively evaluated for impairment 121,521 39,556 492,779 218,468 11,997 884,321 Ending balance: purchased credit impaired loans $ 149 $ $ 3,175 $ 501 $ $ $ 3,825 Real Estate December 31, 2017 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Ending balance $ 1,206 $ 379 $ 2,963 $ 1,340 $ 37 $ 381 $ 6,306 Ending balance: individually evaluated for impairment 56 76 92 224 Ending balance: collectively evaluated for impairment 1,150 379 2,887 1,248 37 381 6,082 Ending balance: purchased credit impaired loans $ $ $ $ $ $ $ Loans receivable: Ending balance $ 140,116 $ 34,405 $ 526,230 $ 240,626 $ 14,594 $ $ 955,971 Ending balance: individually evaluated for impairment 777 2,988 2,482 6,247 Ending balance: collectively evaluated for impairment 138,824 34,405 516,300 237,089 14,594 941,212 Ending balance: purchased credit impaired loans $ 515 $ $ 6,942 $ 1,055 $ $ $ 8,512 The following tables present the major classification of loans summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company’s internal risk rating system at December 31, 2018 and 2017: December 31, 2018 Pass Special Mention Substandard Doubtful Total Commercial $ 109,609 $ 9,123 $ 4,187 $ $ 122,919 Real estate: Construction 39,265 291 39,556 Commercial 471,364 13,106 13,127 497,597 Residential 216,218 2,126 2,771 221,115 Consumer 11,997 11,997 Total $ 848,453 $ 24,355 $ 20,376 $ $ 893,184 December 31, 2017: Pass Special Mention Substandard Doubtful Total Commercial $ 126,506 $ 9,372 $ 4,238 $ $ 140,116 Real estate: Construction 32,840 1,442 123 34,405 Commercial 497,852 15,305 13,073 526,230 Residential 234,808 2,214 3,604 240,626 Consumer 14,474 120 14,594 Total $ 906,480 $ 28,453 $ 21,038 $ $ 955,971 The following tables present the classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans as of December 31, 2018 and 2017. PCI loans are excluded from the aging and nonaccrual loan schedules. Accrual Loans December 31, 2018 30-59 Days Past Due 60-89 Days Past Due 90 or More Days Past Due Total Past Due Current Nonaccrual Loans Total Loans Commercial $ 69 $ 128 $ 82 $ 279 $ 121,350 $ 1,141 $ 122,770 Real estate: Construction 11 655 247 913 38,643 39,556 Commercial 467 538 170 1,175 492,545 702 494,422 Residential 4,537 1,322 290 6,149 213,579 886 220,614 Consumer 124 57 50 231 11,766 11,997 Total $ 5,208 $ 2,700 $ 839 $ 8,747 $ 877,883 $ 2,729 $ 889,359 Purchased credit impaired loans 3,825 Total Loans $ 893,184 Accrual Loans December 31, 2017 30-59 Days Past Due 60-89 Days Past Due 90 or More Days Past Due Total Past Due Current Nonaccrual Loans Total Loans Commercial $ 1,829 $ 85 $ 1,914 $ 137,612 $ 75 $ 139,601 Real estate: Construction 8 8 34,397 34,405 Commercial 2,213 152 $ 150 2,515 516,410 363 519,288 Residential 2,110 551 533 3,194 235,070 1,307 239,571 Consumer 149 60 9 218 14,376 14,594 Total $ 6,309 $ 848 $ 692 $ 7,849 $ 937,865 $ 1,745 $ 947,459 Purchased credit impaired loans 8,512 Total Loans $ 955,971 The following tables summarize information concerning impaired loans as of and for the years ended December 31, 2018 and 2017, by major loan classification: For the Year Ended December 31, 2018 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance: Commercial $ 149 $ 149 $ 459 $ 564 Real estate: Construction Commercial 4,284 4,284 6,382 2,846 Residential 2,466 2,466 2,875 460 Consumer Total 6,899 6,899 9,716 3,870 With an allowance recorded: Commercial 1,249 1,249 $ 382 1,117 7 Real estate: Construction Commercial 534 534 78 676 17 Residential 181 319 28 184 3 Consumer Total 1,964 2,102 488 1,977 27 Commercial 1,398 1,398 382 1,576 571 Real estate: Construction Commercial 4,818 4,818 78 7,058 2,863 Residential 2,647 2,785 28 3,059 463 Consumer Total $ 8,863 $ 9,001 $ 488 $ 11,693 $ 3,897 For the Year Ended December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance: Commercial $ 1,107 $ 1,107 $ 1,210 $ 77 Real estate: Construction Commercial 9,399 9,399 10,164 340 Residential 3,197 3,215 2,896 149 Consumer Total 13,703 13,721 14,270 566 With an allowance recorded: Commercial 185 185 $ 56 186 1 Real estate: Construction Commercial 531 531 76 532 23 Residential 340 478 92 339 12 Consumer Total 1,056 1,194 224 1,057 36 Commercial 1,292 1,292 56 1,396 78 Real estate: Construction Commercial 9,930 9,930 76 10,696 363 Residential 3,537 3,693 92 3,235 161 Consumer Total $ 14,759 $ 14,915 $ 224 $ 15,327 $ 602 For the years ended December 31, interest income, related to impaired loans, would have been $99 in 2018 and $77 in 2017 had the loans been current and the terms of the loans not been modified. There were no loans modified as troubled debt restructurings for the year ended December 31, 2018. At December 31, 2018, there were 14 restructured loans totaling $2,925. December 31, 2017, there were two loans modified as troubled debt restructurings and 19 restructured loans totaling $5,606. The following tables present the number of loans and recorded investment in loans restructured and identified as troubled debt restructurings for the year ended December 31, 2017. Defaulted loans are those which are 30 days or more past due for payment under the modified terms. December 31, 2017 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Recorded Investment Troubled Debt Restructurings: Residential real estate 2 $ 196 $ 173 $ 128 During 2018, there were two defaults on loans restructured, totaling $759, and there were five defaults on loans restructured, totaling $697 during 2017. Purchased loans are initially recorded at their acquisition date fair values. The carryover of the allowance for loan losses is prohibited as any credit losses in the loans are included in the determination of the fair value of the loans at the acquisition date. Fair values for purchased loans are based on a cash flow methodology that involves assumptions and judgments as to credit risk, default rates, loss severity, collateral values, discount rates, payment speeds, and prepayment risk. As part of its acquisition due diligence process, the Bank reviews the acquired institution’s loan grading system and the associated risk rating for loans. In performing this review, the Bank considers cash flows, debt service coverage, delinquency status, accrual status, and collateral for the loan. This process allows the Bank to clearly identify the population of acquired loans that had evidence of deterioration in credit quality since origination and for which it was probable, at acquisition, that the Bank would be unable to collect all contractually required payments. All such loans identified by the Bank are considered to be within the scope of ASC 310-30, Loan and Debt Securities Acquired with Deteriorated Credit Quality and are identified as “Purchased Credit Impaired Loans”. As a result of the merger with CBT, effective October 1, 2017, the Bank identified 37 purchased credit impaired (“PCI”) loans. As part of the merger with Citizens, effective December 31, 2015, the Bank identified 10 PCI loans. As a result of the consolidation with Union, effective November 1, 2013, the Bank identified 14 PCI loans. For all PCI loans, the excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable discount and is recognized into interest income over the remaining life of the loan. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the non-accretable discount. The non-accretable discount represents estimated future credit losses expected to be incurred over the life of the loan. Subsequent decreases to the expected cash flows require the Bank to evaluate the need for an allowance for loan losses on these loans. Subsequent improvements in expected cash flows result in the reversal of a corresponding amount of the non-accretable discount which the Bank then reclassifies as an accretable discount that is recognized into interest income over the remaining life of the loan. The Bank’s evaluation of the amount of future cash flows that it expects to collect is based on a cash flow methodology that involves assumptions and judgments as to credit risk, collateral values, discount rates, payment speeds, and prepayment risk. Charge-offs of the principal amount on purchased impaired loans are first applied to the non-accretable discount. For purchased loans that are not deemed impaired at acquisition, credit discounts representing principal losses expected over the life of the loans are a component of the initial fair value, and the discount is accreted to interest income over the life of the asset. Subsequent to the purchase date, the method used to evaluate the sufficiency of the credit discount is similar to originated loans, and if necessary, additional reserves are recognized in the allowance for loan losses. The unpaid principal balances and the related carrying amount of acquired loans as of December 31, 2018 and December 31, 2017 were as follows: December 31, 2018 December 31, 2017 Credit impaired purchased loans evaluated individually for incurred credit losses: Outstanding balance $ 7,491 $ 16,803 Carrying Amount 3,825 8,512 Other purchased loans evaluated collectively for incurred credit losses: Outstanding balance 315,013 421,620 Carrying Amount 314,328 418,146 Total Purchased Loans: Outstanding balance 322,504 438,423 Carrying Amount $ 318,153 $ 426,658 As of the indicated dates, the changes in the accretable discount related to the purchased credit impaired loans were as follows: Year Ended December 31, 2018 2017 Balance - beginning of period $ 2,129 $ 370 Additions 2,056 Accretion recognized during the period (3,791 ) (297 ) Net reclassification from non-accretable to accretable 2,241 Balance - end of period $ 579 $ 2,129

Off-balance sheet financial ins

Off-balance sheet financial instruments	12 Months Ended
	Dec. 31, 2018
Text Block [Abstract]
Off-balance sheet financial instruments	6. Off-balance sheet financial instruments: The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, unused portions of lines of credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the consolidated balance sheets. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit, unused portions of lines of credit and standby letters of credit is represented by the contractual amounts of those instruments. The Company follows the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. We record a valuation allowance for off-balance sheet credit losses, if deemed necessary, separately as a liability. The allowance was $73 and $66 at December 31, 2018 and 2017, respectively. The contractual amounts of off-balance sheet commitments at December 31, 2018 and 2017 are summarized as follows: December 31, 2018 2017 Commitments to extend credit $ 96,431 $ 52,706 Unused portions of lines of credit 59,512 72,157 Standby letters of credit 5,789 4,871 $ 161,732 $ 129,734 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. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation. Collateral held varies but may include personal or commercial real estate, accounts receivable, inventory and equipment. Unused portions of lines of credit, including home equity and overdraft protection agreements, are commitments for possible future extensions of credit to existing customers. Unused portions of home equity lines are collateralized and generally have fixed expiration dates. Overdraft protection agreements are uncollateralized and usually do not carry specific maturity dates. Unused portions of lines of credit ultimately may not be drawn upon to the total extent to which the Company is committed. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Generally, all standby letters of credit expire within twelve months. The credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending other loan commitments. The Company requires collateral supporting these standby letters of credit as deemed necessary. The carrying value of the liability for the Company’s obligations under guarantees for standby letters of credit was not material at December 31, 2018 and 2017.

Premises and equipment, net

Premises and equipment, net	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Premises and equipment, net	7. Premises and equipment, net: Premises and equipment at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Land $ 4,361 $ 4,561 Premises and leasehold improvements 15,261 14,303 Furniture, fixtures and equipment 6,073 6,054 25,695 24,918 Less: accumulated depreciation 7,487 6,287 $ 18,208 $ 18,631 Depreciation and amortization included in noninterest expense amounted to $1,219 and $702 in 2018 and 2017, respectively. Pursuant to the terms of non-cancelable lease agreements in effect at December 31, 2018, pertaining to banking premises and equipment, future minimum annual rent commitments under various operating leases are summarized as follows: 2019 $ 536 2020 505 2021 443 2022 360 2023 219 Thereafter $ 582 $ 2,645 The leases contain options to extend for periods from one to ten years. The cost of such options is not included in the annual rental commitments. Rent expense for the years ended December 31, 2018 and 2017 amounted to $522 and $488, respectively.

Intangible assets, net

Intangible assets, net	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, net	8. Intangible assets, net: The gross carrying amount and accumulated amortization related to intangible assets at December 31, 2018 and 2017 are presented below: 2018 2017 December 31 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Core deposit intangibles $ 4,558 $ 1,667 $ 4,558 $ 968 Customer list intangible 1,082 541 1,164 475 Non-compete intangible 39 39 Trade name intangibles 102 25 102 5 Total intangible assets $ 5,742 $ 2,233 $ 5,863 $ 1,487 Amortization expense for intangible assets totaled $867 and $538 for the years ended 2018 and 2017, respectively. Riverview estimates the amortization expense for amortizable intangibles as follows: 2019 $ 773 2020 676 2021 581 2022 479 2023 370 Thereafter 630 $ 3,509

Other assets

Other assets	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other assets	9. Other assets: The components of other assets at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Other real estate owned $ 721 $ 236 Bank owned life insurance 29,862 29,065 Restricted equity securities 1,054 1,306 Deferred tax assets 5,884 7,949 Other assets 4,635 5,147 Total $ 42,156 $ 43,703

Deposits

Deposits	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Deposits	10. Deposits: The major components of interest-bearing and noninterest-bearing deposits at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Interest-bearing deposits: Money market accounts $ 113,220 $ 135,747 Now accounts 286,082 238,609 Savings accounts 128,762 189,044 Time deposits 313,955 307,185 Total interest-bearing deposits 842,019 870,585 Noninterest-bearing deposits 162,574 155,895 Total deposits $ 1,004,593 $ 1,026,480 The aggregate amount of time deposits that met or exceeded the FDIC insurance limit of $250 was $33,044 at December 31, 2018 and $35,182 at December 31, 2017. The aggregate amounts of maturities for all time deposits at December 31, 2018, are summarized as follows: 2019 $ 106,488 2020 78,909 2021 58,023 2022 41,203 2023 21,623 Thereafter 7,709 $ 313,955 Deposits of directors, executive officers, principal stockholders or their affiliates are accepted on the same terms and at the prevailing interest rates offered at the time of deposit for comparable transactions with unrelated parties. The amount of related party deposits totaled $1,476 at December 31, 2018 and $3,578 at December 31, 2017. The aggregate amount of deposits reclassified as loans was $169 at December 31, 2018, and $145 at December 31, 2017. Management evaluates transaction accounts that are overdrawn for collectability as part of its evaluation for credit losses. During 2018 and 2017, no deposits were received on terms other than those available in the normal course of business.

Short-term borrowings

Short-term borrowings	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Short-term borrowings	11. Short-term borrowings: Short-term borrowings consisting of FHLB-Pgh and ACBB generally represent overnight or less than 30-day borrowings at December 31, 2018 and 2017 are summarized as follows: At and for the year ended December 31, 2018 Weighted Weighted Maximum Average Average Ending Average Month-End Rate for Rate at End Balance Balance Balance the Year of the Year FHLB-Pgh Open Repo Plus advances $ $ 1,693 $ 17,100 1.65 % ACBB advances 106 3,394 1.89 % Total $ $ 1,799 $ 20,494 1.67 % At and for the year ended December 31, 2017 Weighted Weighted Maximum Average Average Ending Average Month-End Rate for Rate at End Balance Balance Balance the Year of the Year FHLB-Pgh Open Repo Plus advances $ 6,000 $ 18,957 $ 43,000 1.20 % 1.54 % ACBB advances 149 1.34 Total $ 6,000 $ 19,106 $ 43,000 1.20 % 1.54 % The Bank has an agreement with the FHLB-Pgh which allows for borrowings up to its maximum borrowing capacity based on a percentage of qualifying collateral assets. At December 31, 2018, the Bank’s maximum borrowing capacity was $419,307, of which $39,200 was outstanding in borrowings. Advances with the FHLB-Pgh are secured under terms of a blanket collateral agreement by a pledge of FHLB-Pgh stock and certain other qualifying collateral, such as investments and mortgage-backed securities and mortgage loans. Interest accrues daily on the FHLB-Pgh advances based on rates of the FHLB-Pgh discount notes. This rate resets each day. The Bank also has an unsecured line of credit agreement with ACBB, where the line amount was $10,000 at December 31, 2018 and December 31, 2017. There were no amounts outstanding on this line of credit at December 31, 2018 and 2017. Interest on this borrowing accrues daily based on the daily federal funds rate.

Long-term debt

Long-term debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Long-term debt	12. Long-term debt: Long-term debt consisting of the following advances at December 31, 2018 and 2017 are as follows: Interest Rate Loan Type Due Fixed Adjustable 2018 2017 Unsecured term loan March 3, 2031 4.25 % $ 1,823 Unsecured non-revolving line March 3, 2031 4.25 % 318 March 3, 2031 4.25 % 1,818 April 3, 2031 4.25 % 1,874 June 3, 2032 4.50 % 582 Subordinated debt September 17, 2033 5.74 % $ 4,195 4,164 September 15, 2035 4.33 % 2,697 2,654 $ 6,892 $ 13,233 Maturities of long-term debt, by contractual maturity, in years subsequent to December 31, 2018 are as follows: 2019 2020 2021 2022 2023 Thereafter $ 6,892 $ 6,892 The $2,000 unsecured term loan agreement with a local bank, due March 3, 2031, was fixed at 3.25% until March 3, 2016, and thereafter, adjusted every three years and indexed to the weekly average yield on U.S. Treasury securities adjusted to a constant maturity of three years, plus 3 The $5,000 unsecured, non-revolving line of credit with a local bank consisted of four separate draws of $350, $2,000, $2,050 and $600. The aggregate outstanding balance of the line was $4,592 at December 31, 2017. The maximum term of the facility is 42 months consisting of a non-revolving draw period followed by a principal repayment term. The interest was fixed at 3.99% until January 11, 2016 monthly payments of principal including interest in an amount sufficient to fully amortize the balance of the loan over the term of the loan. As a result of the merger with CBT, the Company assumed the subordinated debentures that were recorded as of the October 1, 2017 effective date. A trust formed by CBT Financial issued $5,000 of floating rate trust preferred securities in 2003 as part of a pooled offering of such securities. The interest rate adjusts quarterly to the three-month LIBOR rate plus 2.95%. CBT Financial issued subordinated debentures to the trust in exchange for ownership of all of the common securities of the trust and the proceeds of the offering; the debentures represent the sole asset of the trust. CBT Financial became eligible to redeem the subordinated debentures, in whole but not in part, beginning in 2008 at a price of 100% of face value. The subordinated debentures must be redeemed no later than 2033. The interest rate on the subordinated debentures was 5.74% and 4.55% on December 31, 2018 and 2017. In 2005 a trust formed by CBT Financial issued $4,000 of fixed rate trust preferred securities as part of a pooled offering of such securities. CBT Financial issued subordinated debentures to the trust in exchange for ownership of all of the common securities of the trust and the proceeds of the offering; the debentures represent the sole asset of the trust. CBT Financial became eligible to redeem the subordinated debentures, in whole but not in part, beginning in 2010 at a price of 100% of face value. CBT Financial did not redeem the subordinated debentures and the rate converted to a floating rate of three-month LIBOR plus 1.54%. The subordinated debentures must be redeemed no later than 2035. The interest rate on the subordinated debentures was 4.33% and 3.13% on December 31, 2018 and 2017. Interest payments on the debentures may be deferred at any time at the election of the Company for up to 20 consecutive quarterly periods ( 5

Fair value of financial instrum

Fair value of financial instruments	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair value of financial instruments	13. Fair value of financial instruments: Assets and liabilities measured at fair value on a recurring basis at December 31, 2018 and 2017 are summarized as follows: Fair Value Measurement Using December 31, 2018 Amount Quoted Prices in Significant Significant State and Municipals: Taxable $ 33,278 $ 33,278 Tax-exempt 12,776 12,776 Mortgage-backed securities: U.S. Government agencies 23,670 23,670 U.S. Government-sponsored enterprises 26,195 26,195 Corporate debt obligations 8,758 8,758 Total $ 104,677 $ $ 104,677 Fair Value Measurement Using December 31, 2017 Amount Quoted Prices in Significant Significant State and Municipals: Taxable $ 35,002 $ 35,002 Tax-exempt 16,308 16,308 Mortgage-backed securities: U.S. Government agencies 22,817 22,817 U.S. Government-sponsored enterprises 10,089 10,089 Corporate debt obligations 8,985 8,985 Total $ 93,201 $ $ 93,201 Assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2018 and 2017 are summarized as follows: Fair Value Measurement Using December 31, 2018 Amount (Level 1) (Level 2) (Level 3) Other real estate owned $ 721 $ 721 Impaired loans, net of related allowance 1,476 1,476 Total $ 2,197 $ 2,197 Fair Value Measurement Using December 31, 2017 Amount (Level 1) (Level 2) (Level 3) Other real estate owned $ 236 $ 236 Impaired loans, net of related allowance 832 832 Total $ 1,068 $ 1,068 The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Quantitative Information about Level 3 Fair Value Measurements December 31, 2018 Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) Other real estate owned $ 721 Appraisal of collateral Appraisal adjustments 0.0 69.0 28.4 Liquidation expenses 0.0 7.0 7.0 Impaired loans $ 1,476 Appraisal of collateral Appraisal adjustments 0.0 0.0 0.0 Liquidation expenses 7.0 25.0 10.3 Quantitative Information about Level 3 Fair Value Measurements December 31 , 2017 Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) Other real estate owned $ 236 Appraisal of collateral Appraisal adjustments 0.0% to 69.0% (39.0)% Liquidation expenses 0.0% to 7.0% (7.0)% Impaired loans $ 832 Appraisal of collateral Appraisal adjustments 0.0% to 0.0% (0.0)% Liquidation expenses 0.0% to 7.0% (7.0)% Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various Level 3 Inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal. The carrying and fair values of the Company’s financial instruments at December 31, 2018 and 2017 and their placement within the fair value hierarchy are as follows: Fair Value Hierarchy December 31, 2018 Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 53,816 $ 53,816 $ 53,816 Investment securities available-for-sale 104,677 104,677 $ 104,677 Loans held for sale 637 637 637 Net loans 886,836 872,455 $ 872,455 Accrued interest receivable 3,010 3,010 663 2,347 Restricted equity securities 1,054 1,054 1,054 Financial liabilities: Deposits $ 1,004,593 $ 999,929 $ 999,929 Long-term borrowings 6,892 6,892 6,892 Accrued interest payable 484 484 484 Fair Value Hierarchy December 31, 2017 Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 25,786 $ 25,786 $ 25,786 Investment securities available-for-sale 93,201 93,201 $ 93,201 Loans held for sale 254 254 254 Net loans 949,665 954,876 $ 954,876 Accrued interest receivable 3,237 3,237 640 2,597 Restricted equity securities 1,306 1,306 1,306 Financial liabilities: Deposits $ 1,026,480 $ 1,022,068 $ 1,022,068 Short-term borrowings 6,000 6,000 6,000 Long-term borrowings 13,233 14,634 14,634 Accrued interest payable 468 468 468

Revenue recognition

Revenue recognition	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue recognition	14. Revenue recognition: On January 1, 2018, the Company adopted ASU No. 2014-09 “Revenue from Contracts with Customers” (Topic 606) and all subsequent ASUs that modified Topic 606. As stated in Note 1 Summary of Significant Accounting Policies, the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with our historic accounting under Topic 605. Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. Topic 606 is applicable to noninterest revenue streams such as trust and asset management income, deposit related fees, interchange fees, merchant income, and other fees. However, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest revenue streams in-scope of Topic 606 are discussed below. Service Charges, Fees and Commissions Service charges on deposit accounts consist of monthly service fees, check orders, and other deposit account related fees. The Company’s performance obligation for monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees are largely transactional based, and therefore, the Company’s performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. Fees, exchange, and other service charges are primarily comprised of debit and credit card income, ATM fees, merchant services income, and other service charges. Debit and credit card income is primarily comprised of interchange fees earned whenever the Company’s debit and credit cards are processed through card payment networks such as Mastercard. Such income is presented net of network expenses as the Company acts as an agent in these transactions. ATM fees are primarily generated when a Company cardholder uses a non-Company ATM, or a non-Company cardholder uses a Company ATM. Merchant services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees. Other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. The Company’s performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Other noninterest income consists of other recurring revenue streams such as commissions from sales of mutual funds and other investments, investment advisor fees from wealth management products, safety deposit box rental fees, and other miscellaneous revenue streams. Commissions from the sale of mutual funds and other investments are recognized on trade date, which is when the Company has satisfied its performance obligation. The Company also receives periodic service fees or trailers from mutual fund companies typically based on a percentage of net asset value. Trailer revenue is recorded over time, usually monthly or quarterly, as net asset value is determined. Investment advisor fees from wealth management products is earned over time and based on an annual percentage rate of the net asset value. The investment advisor fees are charged to the customer’s account in advance on the first month of the quarter, and the revenue is recognized over the following three-month period. Safe deposit box rental fees are charged to the customer on an annual basis and recognized upon receipt of payment. The Company determined that since rentals and renewals occur fairly consistently over time, revenue is recognized on a basis consistent with the duration of the performance obligation. Trust and Asset Management Trust and asset management income is primarily comprised of fees earned from the management and administration of trusts and other customer assets. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customers’ accounts. The Company does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. The Company’s performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered. The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the years ended December 31, 2018 and 2017. Year Ended December 31 2018 2017 Noninterest Income: In-scope of Topic 606: Service charges, fees and commissions $ 5,697 $ 2,037 Trust and asset management 1,726 1,176 Noninterest income (in-scope of Topic 606) 7,423 3,213 Noninterest income (out-of-scope of Topic 606) 1,457 1,198 Total noninterest income $ 8,880 $ 4,411 Contract Balances A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration, resulting in a contract receivable, or before payment is due, resulting in a contract asset. A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of December 31, 2018 and 2017, the Company did not have any significant contract balances. Contract Acquisition Costs In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained, for example, sales commission. The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, the Company did not capitalize any contract acquisition cost.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2018
Postemployment Benefits [Abstract]
Employee Benefit Plans	15. Employee Benefit Plans: Defined Contribution Plan: The Bank maintains a contributory 401(k) retirement plan for all eligible employees. Currently, the Bank’s policy is to match 100% of the employee’s voluntary contribution to the plan up to a maximum of 4% of the employees’ compensation. Additionally, the Bank may make discretionary contributions to the plan after considering current profits and business conditions. The amount charged to expense in 2018 and 2017 totaled $508 and $328, respectively. Of these amounts, no discretionary contributions were made in 2018 and 2017. Director Emeritus Plan: Effective November 2, 2011, a Director Emeritus Agreement (the “Agreement”) was entered into by and between the Company, the Bank and certain Directors. In order to promote orderly succession of the Company’s and Bank’s Board of Directors, the Agreement defines the benefits the Company is willing to provide upon the termination of service to those individuals who served as Directors of the Company and Bank as of December 31, 2011, where the Company will pay the Director $15 per year for services performed as a Director Emeritus, which may be increased at the sole discretion of the Board of Directors. The agreement further states that the benefit is to be paid to a Director Emeritus over five years, in 12 monthly installments: • upon termination of service as a Director on or after the age of 65, provided the Director agrees to provide certain ongoing services for Riverview; • upon termination of service as a Director due to a disability prior to age 65; • upon a change of control; or • upon the death of a Director after electing to be a Director Emeritus. Expenses recorded under the terms of this agreement were $83 and $38 for the years ended December 31, 2018 and 2017, respectively. Deferred Compensation Agreements: The Bank maintains 12 Supplemental Executive Retirement Plan (“SERP”) agreements that provide specified benefits to certain key executives. The agreements were specifically designed to encourage key executives to remain as employees of the Bank. The agreements are unfunded, with benefits to be paid from the Bank’s general assets. After normal retirement, benefits are payable to the executive or his/her beneficiary in equal monthly installments for a period of 15 years for nine of the executives and 20 years for three of the executives. There are provisions for death benefits should a participant die before his/her retirement date. These benefits are also subject to change of control and other provisions. The Bank maintains a “Director Deferred Fee Agreement” (“DDFA”) which allows electing directors to defer payment of their directors’ fees until a future date. In addition, the Bank maintains an “Executive Deferred Compensation Agreement” (“EDCA”) with 12 of its current and former executives. This agreement allows the executives of the Bank to defer payment of their base salary, bonus and performance-based compensation until a future date. For both types of deferred fee agreements during the deferral period, the estimated present value of the future benefits is accrued over the effective dates of the agreements using an interest factor that is evaluated and approved by the compensation committee of the Board of Directors on an annual basis. The agreements are unfunded, with benefits to be paid from the Bank’s general assets. The accrued benefit obligations for all the plans total $4,749 at December 31, 2018 and $4,460 at December 31, 2017 and are included in other liabilities. Expenses relating to these plans totaled $332 and $240 in the years ended December 31, 2018 and 2017, respectively. Stock Option Plan: The Company has a nonqualified stock option plan to advance the development, growth and financial condition of the Company. This plan provides incentives through participation in the appreciation of its common stock in order to secure, retain and motivate directors, officers and key employees and align such person’s interests with those of its shareholders. A total of 350,000 shares were originally authorized under the stock option plan. The vesting schedule for all option grants is a seven-year cliff, which means that the options are 100% vested in the seventh year following the grant date while the expiration date of all options is ten years following the grant date. The Plan states that upon the date of death of a participant, all awards granted pursuant to the agreement for that participant shall become fully vested and remain exercisable for the option grant’s remaining term. All stock options, except for 6,500 stock options granted during 2018, were fully vested and exercisable at December 31, 2018. The following table summarizes the stock option activity for the years ended December 31, 2018 and 2017: 2018 2017 Option Grants Weighted Average Exercise Price Option Grants Weighted Average Exercise Price Outstanding – January 1, 2018 298,246 $ 10.56 321,079 $ 10.47 Granted 6,500 12.88 20,000 11.94 Forfeited (5,750 ) 10.60 (4,000 ) 10.00 Exercised (35,516 ) 10.57 (38,833 ) 10.59 Outstanding – December 31, 2018 263,480 $ 10.62 298,246 $ 10.56 Options vested and exercisable at year-end 256,980 298,246 Range of exercise price $ 9.75 - $13.05 $ 9.75 - $13.05 Remaining contractual life 4.06 years 4.72 years The fair value of options granted during 2018 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions. Option Grants Option Grants March 16, 2018 June 26, 2018 Number of options 5,000 1,500 Fair value per share $ 2.01 $ 1.39 Dividend yield 4.24 % 3.28 % Expected life 8.5 years 8.5 years Expected volatility 23.26 % 14.02 % Risk-free interest rate 2.78 % 2.83 % During the year ended December 31, 2018, there were 35,516 stock options exercised with a total intrinsic value (the amount by which the stock price exceeded the exercise price) and fair value of approximately $115 and $490, respectively. Cash received from the exercise of stock options for the year ended December 31, 2018 was $55. There was intrinsic value associated with 220,130 options outstanding at December 31, 2018, where the market value of the stock as of the close of business at year end was $10.90 per share as compared with the option exercise price of $9.75 for 26,830 options, $10.00 for 92,800 options, $10.35 for 12,500 options and $10.60 for 88,000 options. There was no intrinsic value associated with 43,350 options outstanding at December 31, 2018, where the market value of the stock as of the close of business at year end was $10.90 per share as compared with the option exercise price of $12.25 for 2,500 options, $13.05 for 19,350 options, $11.94 for 15,000 options, $12.97 for 5,000 options and $12.58 for 1,500 options At December 31, 2017, there was intrinsic value associated with 298,246 options outstanding, where the market value of the stock as of the close of business at year end was $13.15 per share as compared with the option exercise price of $10.60 for 113,500 options, $10.35 for 12,500 options, $9.75 for 31,996 options, $10.00 for 98,400 options, $12.25 for 2,500 options, $13.05 for 19,350 options and $11.94 for 20,000 options. The Company accounts for these options in accordance with GAAP, which requires that the fair value of the equity awards be recognized as compensation expense over the period during which the employee is required to provide service in exchange for such an award. The Company policy has been to amortize compensation expense over the vesting period, or seven years. The Company recognized $9 and $203 of compensation expense for stock options in the years ended December 31, 2018 and 2017. As of December 31, 2018, the Company had no unrecognized compensation expense associated with the stock options since all of the options granted prior to 2018 were fully vested in 2017 as a result of the change in control associated with the merger with CBT, which in turn caused compensation expense to be higher in 2017 as compared with 2018. Employee Stock Purchase Plan: The Company has an Employee Stock Purchase Plan (“ESPP”), whereby employees may purchase up to 170,000 shares of common stock of the Company, at a discount of up to a 15%. On April 15, 2015, the Company filed a Registration Statement on Form S-8, to register 75,000 shares of common stock that the Company may issue to the ESPP. Common shares acquired through the ESPP totaled 18,650 shares in 2018 and 11,301 shares in 2017. Defined Benefit Pension Plan and Post Retirement Benefit Plan: As a result of the consolidation with Union, the Company took over Union’s noncontributory defined benefit pension plan, which substantially covered all Union employees. The plan benefits were based on average salary and years of service. Union elected to freeze all benefits earned under the plan effective January 1, 2007. The Company also assumed responsibility of Citizens’ noncontributory defined benefit pension plan effective as of the December 31, 2015 merger date. The plan substantially covered all Citizens employees and the plan benefits were based on average salary and years of service. Citizens elected to freeze all benefits earned under the plan effective January 1, 2013. As a result of the merger of equals effective October 1, 2017, the Company assumed responsibility of CBT’s postretirement benefits plan, which is an unfunded postretirement benefit plan covering health insurance costs and postretirement life insurance benefits for certain retirees. The Company accounts for the defined benefit pension plan and the postretirement benefits plan in accordance with FASB ASC Topic 715, “Compensation-Retirement Plans”. This guidance requires the Company to recognize the funded status, which is the difference between the fair value of the plan assets and the projected benefit obligation of the benefit plan. The following table presents the plans’ funded status and the amounts recognized in the Company’s consolidated financial statements for 2018 and 2017. The measurement date, for purposes of these valuations, was December 31, 2018 and 2017. Benefit Plans 2018 2017 Obligations and funded status: Change in benefit obligations: Benefit obligation beginning January 1, $ 8,403 $ 8,002 Interest cost 291 322 Benefits paid (546 ) (535 ) Assumption of CBT obligation 154 Change due to plan amendment (95 ) Actuarial (gain)/loss (479 ) 555 Benefit obligation at end of year 7,669 8,403 Change in plan assets: Fair value of plan assets at January 1, 7,191 6,723 Adjustment to asset value at January 1 Actual return on plan assets (349 ) 807 Contributions 8 193 Benefits paid (540 ) (532 ) Fair value of plan assets at end of year 6,310 7,191 Funded status included in other liabilities $ (1,359 ) $ (1,212 ) Amounts related to the plan that have been recognized in accumulated other comprehensive loss but not yet recognized as a component of net periodic pension cost are as follows for the years ended December 31: Benefit Plans 2018 2017 Net gain (loss) $ (1,132 ) $ (869 ) Income tax expense (benefit) (238 ) (183 ) Net amount recognized in other comprehensive income (loss) $ (894 ) $ (686 ) The amount of net actuarial cost expected to be amortized in 2019 is $17 for the pension plans. Net periodic pension expense and postretirement benefit cost include the following components for the years ended December 31: Pension Benefits 2018 2017 Interest cost $ 291 $ 322 Expected return on plan assets (486 ) (456 ) Amortization of net loss 81 49 Net periodic pension cost (credit) $ (114 ) $ (85 ) Postretirement Life Insurance Benefits 2018 2017 Service cost $ $ 1 Interest cost 2 1 Net periodic postretirement benefit cost (credit) $ 2 $ 2 The accumulated benefit obligation was $7,669 at December 31, 2018 and $8,403 at December 31, 2017 for the pension benefit and postretirement benefit plans. Pension Benefits Postretirement Life Union Citizens Insurance Benefits 2018 2017 2018 2017 2018 2017 Discount rate 3.60 % 4.14 % 3.60 % 4.14 % 4.25 % 3.75 % Expected long-term rate of return on plan assets 7.00 % 7.00 % 7.00 % 7.00 % The following summarizes the actuarial assumptions used for the Company’s pension plan and postretirement benefits plan: • For the pension plan, the selected long-term rate of return on plan assets was primarily based on the asset allocation of the plan’s assets. Analysis of the historic returns on these asset classes and projections of expected future returns were considered in setting the long-term rate of return. • The benefit offered under the postretirement benefits plan is fixed; therefore, the accumulated postretirement benefit obligation is not impacted by health care cost trends or the rate of compensation increase. The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Pension Benefits Postretirement Life Insurance Benefits 2019 $ 528 $ 5 2020 522 5 2021 513 5 2022 513 4 2023 502 4 2024 – 2028 2,362 16 Total $ 4,940 $ 39 The Company’s pension plan asset allocations as of the year ends, by asset category, are as follows: Pension Benefits 2018 2017 Cash and cash equivalents 0.70 % 0.76 % Equity 34.53 40.19 Fixed income 64.77 59.05 Total 100.00 % 100.00 % The fair value of the pension plan assets at December 31, 2018 and 2017 by asset category are as follows: 2018 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and cash equivalents $ 44 $ 44 Mutual fund – equity: Large-cap value 233 233 Large-cap core 237 237 Mid-cap core 261 261 Small-cap core 115 115 International growth 461 461 Large cap growth 485 485 Small / midcap growth 141 141 Mutual funds/ETFs – fixed income: Fixed income – core plus 1,443 1,443 Intermediate duration 483 483 Long duration – Government credit 1,555 1,555 Long U.S. Treasury ETF 606 606 Common /collective trusts – equity: Large cap value 246 $ 246 Total assets $ 6,310 $ 6,064 $ 246 2017 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and cash equivalents $ 55 $ 55 Mutual fund – equity: Large-cap value 297 297 Large-cap core 302 302 Mid-cap core 348 348 Small-cap core 166 166 International growth 656 656 Large cap growth 634 634 Small / midcap growth 184 184 Mutual funds/ETFs – fixed income: Fixed income – core plus 1,483 1,483 Intermediate duration 501 501 Long duration – Government credit 1,632 1,632 Long U.S. Treasury ETF 630 630 Common /collective trusts – equity: Large cap value 303 $ 303 Total assets $ 7,191 $ 6,888 $ 303 The valuation used is based on quoted market prices provided by an independent third party. The Company does not expect to contribute to either of the plans in 2019.

Income taxes

Income taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income taxes	16. Income taxes: The current and deferred amounts of the provision for income taxes expense (benefit) for each of the years ended December 31, 2018 and 2017 are summarized as follows: Year Ended December 31 2018 2017 Current $ 31 $ Deferred 2,340 3,501 $ 2.371 $ 3,501 The components of the net deferred tax asset at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Deferred tax assets: Allowance for loan losses $ 1,121 $ 991 Deferred compensation 1,007 949 Purchase accounting adjustments 827 1,863 Alternate minimum tax credit carryforwards 608 608 Benefit plans 238 183 Accrued expenses 242 231 Unrealized loss on investment securities available-for-sale 458 238 Low income housing credit carryforwards 1,063 1,063 Net operating loss carryforwards 761 1,827 Other 133 571 Total 6,458 8,524 Deferred tax liabilities: Premises and equipment, net (574 ) (575 ) Total (574 ) (575 ) Net deferred tax asset $ 5,884 $ 7,949 Management believes that future taxable income will be sufficient to utilize deferred tax assets. Core earnings of the Company will continue to support the recognition of the deferred tax asset based on future growth projections. A reconciliation between the amount of the effective income tax expense and the income tax expense that would have been provided at the federal statutory rate of 21.0 percent for the year ended December 31, 2018 and 34.0 percent for the year ended December 31, 2017 is summarized as follows: Year Ended December 31 2018 2017 Federal income tax at statutory rate $ 2,778 $ (479 ) Tax exempt interest (248 ) (282 ) Bank owned life insurance income (163 ) (153 ) Tax Cuts and Jobs Act legislation 3,888 Disallowed merger related costs 225 Other, net 4 302 Total $ 2,371 $ 3,501 On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act tax reform legislation. This legislation makes significant changes in U.S. tax law including a reduction in the corporate tax rates, changes to net operating loss carryforwards and carrybacks, and a repeal of the corporate alternative minimum tax. The legislation reduced the highest U.S. corporate tax rate from the current rate of 35% to 21%, effective January 1, 2018. As a result of the enacted law, the Company was required to revalue deferred tax assets and liabilities at the enacted rate. This revaluation resulted in an additional charge of $3,888 to income tax expense in continuing operations and a corresponding reduction in the net deferred tax assets. The other provisions of the Tax Cuts and Jobs Act did not have a material impact on the 2018 and 2017 consolidated financial statements. As stated above, as a result of the enactment of the Tax Cuts and Jobs Act on December 22, 2017, deferred tax assets and liabilities were remeasured based upon the newly enacted U.S. statutory federal income tax rate of 21%, which is the tax rate at which these assets and liabilities are expected to reverse in the future. Notwithstanding the foregoing, management is still analyzing certain aspects of the new law and refining their calculations, which could affect the measurement of these assets and liabilities or give rise to new deferred tax amounts.

Parent company financial statem

Parent company financial statements	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Parent company financial statements	17. Parent company financial statements: Condensed Balance Sheets December 31 2018 2017 Assets Cash and cash equivalents $ 249 $ 426 Investment in bank subsidiary 120,607 119,297 Premises, net 73 73 Other assets 336 201 $ 121,265 $ 119,997 Liabilities and stockholders’ equity Long-term borrowings $ 6,892 $ 13,233 Other liabilities 463 508 Total Liabilities 7,355 13,741 Stockholders’ equity 113,910 106,256 $ 121,265 $ 119,997 Condensed Statements of Income and Comprehensive Income December 31 2018 2017 Income, dividends from bank subsidiary $ 9,229 $ 2,090 Interest expense 747 379 Income before equity in undistributed net income of subsidiary 8,482 1,711 Undistributed net income (loss) of subsidiary 2,350 (7,019 ) Noninterest expense 164 21 Net income (loss) before income taxes $ 10,668 $ (5,329 ) Income tax benefit (190 ) (418 ) Net income (loss) $ 10,858 $ (4,911 ) Total comprehensive income (loss) $ 9,818 $ (4,034 ) Condensed Statements of Cash Flows Year Ended December 31 2018 2017 Cash flows from operating activities: Net income (loss) $ 10,858 $ (4,911 ) Adjustments to reconcile net income to net cash provided by operating activities: Option expense 9 203 Undistributed net (income) loss of subsidiary (2,350 ) 7,019 Increase in accrued interest receivable and other assets (135 ) (124 ) Decrease in accrued interest payable and other liabilities (45 ) (556 ) Net cash provided by operating activities 8,337 1,631 Cash flows from investing activities: Capitalization of subsidiary (15,500 ) Cash consideration for business acquisition (1 ) Net cash used in investing activities (15,501 ) Cash flows from financing activities: Proceeds from long-term debt 600 Repayment of long-term borrowings (6,341 ) (338 ) Proceeds from exercise of options 41 411 Proceeds from issuance of common stock 517 16,856 Dividends paid (2,731 ) (3,257 ) Net cash provided by(used in) financing activities (8,514 ) 14,272 Increase (decrease) in cash and cash equivalents (177 ) 402 Cash and cash equivalents - beginning 426 24 Cash and cash equivalents - ending $ 249 $ 426

Regulatory matters

Regulatory matters	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Regulatory matters	18. Regulatory matters: In 2018, the Federal Reserve increased the asset limit to qualify as a small bank holding company from $1 billion to $3 billion. As a result, the Company met the eligibility criteria for a small bank holding company and was exempt from risk-based capital and leverage rules, including Basel III. The Bank’s ability to pay a dividend up to the bank holding company in order to fund the payment of a dividend to shareholders is governed by Section 1302 of the Pennsylvania Banking Code of 1965 which states that the board of directors of an institution may only declare and pay dividends out of accumulated net earnings. The amount of funds available for transfer from the Bank to the Company in the form of loans and other extensions of credit is also limited. Under Federal Regulation, transfers to any one affiliate are limited to 10.0 percent of capital and surplus. At December 31, 2018, the maximum amount available for transfer from the Bank to the Company in the form of loans amounted to $12,607. At December 31, 2018 and 2017, there were no loans outstanding, nor were any advances made during 2018 and 2017. The Company and Bank are subject to certain regulatory capital requirements administered by the federal banking agencies, which are defined in Section 38 of the Federal Deposit Insurance Corporation Improvement Act of 1991 (“FDICIA”). 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 Company’s and Bank’s consolidated financial statements. In the event an institution is deemed to be undercapitalized by such standards, FDICIA prescribes an increasing amount of regulatory intervention, including the required institution of a capital restoration plan and restrictions on the growth of assets, branches or lines of business. Further restrictions are applied to the significantly or critically undercapitalized institutions including restrictions on interest payable on accounts, dismissal of management and appointment of a receiver. For well capitalized institutions, FDICIA provides authority for regulatory intervention when the institution is deemed to be engaging in unsafe and unsound practices or receives a less than satisfactory examination report rating. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Prompt corrective action provisions are not applicable to bank holding companies. New risk-based capital rules became effective January 1, 2015 requiring the Bank to maintain a “capital conservation buffer” of 250 basis points in excess of the “minimum capital ratio.” The minimum capital ratio is equal to the prompt corrective action adequately capitalized threshold ratio. The capital conservation buffer will be phased in over four years beginning on January 1, 2016, with a maximum buffer of 0.625% of risk weighted assets for 2016, 1.25% for 2017, 1.875% for 2018, and 2.5% for 2019 and thereafter. Failure to maintain the required capital conservation buffer will result in limitations on capital distributions and on discretionary bonuses to executive officers. The Bank was categorized as “well capitalized” under the regulatory guidance at December 31, 2018 and 2017, based on the most recent notification from the Federal Deposit Insurance Corporation. To be categorized as well capitalized, the Bank must maintain certain minimum Tier I risk-based, total risk-based, Tier I Leverage and Common equity Tier I risk-based capital ratios as set forth in the following tables. The Tier I Leverage ratio is defined as Tier I capital to total average assets less intangible assets. There are no conditions or events since the most recent notification that management believes have changed the Bank’s category. The Bank’s capital ratios and the minimum ratios required for capital adequacy purposes and to be considered well capitalized under the prompt corrective action provisions are summarized below for the year ended December 31, 2018: Actual Minimum Regulatory Capital Ratios under Basel III (with 1.875% capital conservation buffer phase-in) Well Capitalized under Basel III December 31, 2018: Amount Ratio Amount Ratio Amount Ratio Total risk-based capital (to risk-weighted assets: Riverview Bank $ 100,001 11.4 % $ 86,443 ³ 9.875 % $ 87,538 ³ 10.0 % Tier 1 capital (to risk-weighted assets): Riverview Bank 93,580 10.7 68,936 ³ 7.875 70,030 ³ 8.0 Tier 1 capital (to average total assets): Riverview Bank 93,580 8.4 44,733 ³ 4.00 55,916 ³ 5.0 Common equity tier 1 risk-based capital (to risk-weighted assets): Riverview Bank 93,580 10.7 55,805 ³ 6.375 56,900 ³ 6.5 The Bank’s capital ratios and minimum ratios required for capital adequacy purposes and to be considered well capitalized under prompt corrective action provisions are summarized below for the year ended December 31, 2017: Actual Minimum Regulatory Capital Ratios under Basel III (with 1.25% capital conservation buffer phase-in) Well Capitalized under Basel III December 31, 2017: Amount Ratio Amount Ratio Amount Ratio Total risk-based capital (to risk-weighted assets): Riverview Bank $ 96,926 10.4 % $ 85,963 ³ 9.25 % $ 92,933 ³ 10.0 % Tier 1 capital (to risk-weighted assets): Riverview Bank 90,553 9.7 67,376 ³ 7.25 74,346 ³ 8.0 Tier 1 capital (to average total assets): Riverview Bank 90,553 7.9 45,583 ³ 4.00 56,978 ³ 5.0 Common equity tier 1 risk-based capital (to risk-weighted assets): Riverview Bank 90,553 9.7 53,437 ³ 5.75 60,407 ³ 6.5

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies	19. Contingencies: In the opinion of the Company, after review with legal counsel, there are no proceedings pending to which the Company is a party or to which its property is subject, which, if determined adversely to the Company, would be material in relation to the Company’s consolidated financial condition. There are no proceedings pending other than ordinary, routine litigation incident to the business of the Company. In addition, no material proceedings are pending or are known to be threatened or contemplated against the Company by governmental authorities. Neither the Company nor any of its property is subject to any material legal proceedings. Management, after consultation with legal counsel, does not anticipate that the ultimate liability, if any, arising out of pending and threatened lawsuits will have a material effect on the operating results or financial position of the Company.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	20. Subsequent Events: In preparing these consolidated financial statements, the Company evaluated the events and transactions that occurred from the date of the financial statements through the date these consolidated financial statements were issued, and has not identified any events that require recognition or disclosure in the consolidated financial statements.

Summary of significant accoun_2

Summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations: Riverview Financial Corporation, (the “Company” or “Riverview”), a bank holding company incorporated under the laws of Pennsylvania, provides a full range of financial services through its wholly-owned subsidiary, Riverview Bank (the “Bank”). On October 2, 2017, the Company announced the completion of its merger of equals with CBT Financial Corp. (“CBT”), effective October 1, 2017 pursuant to the Agreement and Plan of Merger between Riverview and CBT, dated April 19, 2017. On the effective date, CBT was merged with and into Riverview, with Riverview surviving (the “merger”). Additionally, CBT Bank, the wholly-owned subsidiary of CBT, merged with and into Riverview Bank, the wholly-owned subsidiary of Riverview, with Riverview Bank as the surviving institution. The Company’s financial results reflect the merger of CBT Bank with and into Riverview Bank under the purchase method of accounting, with the Company treated as the acquirer from an accounting and reporting purposes. As a result, the historical financial information included in the Company’s consolidated financial statements and related notes as reported in this Form 10-K is that of Riverview. Riverview Bank, with 28 full service offices and four limited purpose offices, is a full-service commercial bank offering a wide range of traditional banking services and financial advisory, insurance and investment services to individuals, municipalities and small to medium sized businesses in the Pennsylvania market areas of Berks, Blair, Centre, Clearfield, Dauphin, Huntingdon, Lebanon, Lycoming, Northumberland, Perry, Schuylkill and Somerset Counties. The Bank is state-chartered under the jurisdiction of the Pennsylvania Department of Banking and Securities and the Federal Deposit Insurance Corporation. The Bank’s primary product is loans to small- and medium-sized businesses. Other lending products include one-to-four family residential mortgages and consumer loans. The Bank primarily funds its loans by offering interest-bearing transaction accounts to commercial enterprises and individuals. Other deposit product offerings include certificates of deposits and various demand deposit accounts. The Bank offers a broad range of financial advisory, investment and fiduciary services through its wealth management and trust operating divisions. The wealth management and trust divisions did not meet the quantitative thresholds for required segment disclosure in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The Bank’s thirty community banking offices, all similar with respect to economic characteristics, share a majority of the following aggregation criteria: (i) products and services; (ii) operating processes; (iii) customer bases; (iv) delivery systems; and (v) regulatory oversight. Accordingly, they were aggregated into a single operating segment. The Company faces competition primarily from commercial banks, thrift institutions and credit unions within the Central, Northern and Southwestern Pennsylvania markets, many of which are substantially larger in terms of assets and capital. In addition, mutual funds and security brokers compete for various types of deposits, and consumer, mortgage, leasing and insurance companies compete for various types of loans and leases. Principal methods of competing for banking and permitted nonbanking services include price, nature of product, quality of service and convenience of location. The Company and the Bank are subject to regulations of certain federal and state regulatory agencies and undergo periodic examinations.
Basis of presentation	Basis of presentation: The consolidated financial statements of the Company have been prepared in conformity with GAAP, Regulation S-X and reporting practices applied in the banking industry. All significant intercompany balances and transactions have been eliminated in consolidation. The Company also presents herein condensed parent company only financial information regarding Riverview Financial Corporation (“Parent Company”). Prior period amounts are reclassified when necessary to conform with the current year’s presentation. Such reclassifications had no effect on financial position or results of operations. The Company has evaluated events and transactions occurring subsequent to the balance sheet date of December 31, 2018, for items that should potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the date these consolidated financial statements were issued.
Estimates	Estimates: The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates that are particularly susceptible to material change in the near term relate to the determination of the allowance for loan losses, fair value of financial instruments, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of deferred tax assets, determination of other-than-temporary impairment losses on securities, impairment of goodwill and fair value of assets acquired and liabilities assumed in business combinations. Actual results could differ from those estimates.
Investment securities	Investment securities: Investment securities are classified and accounted for as either held-to-maturity, available-for-sale, or trading account securities based on management’s intent at the time of acquisition. Management is required to reassess the appropriateness of such classifications at each reporting date. The Company classifies debt securities as held-to maturity when management has the positive intent and ability to hold such securities to maturity. Held-to-maturity securities are stated at cost, adjusted for amortization of premium and accretion of discount. Investment securities are designated as available-for-sale when they are to be held for indefinite periods of time as management intends to use such securities to implement asset/liability strategies or to sell them in response to changes in interest rates, prepayment risk, liquidity requirements, or other circumstances identified by management. Available-for-sale securities are reported at fair value, with unrealized gains and losses, net of income taxes, excluded from earnings and reported in a separate component of stockholders’ equity. Estimated fair values for investment securities are based on market prices from a national pricing service. Realized gains and losses are computed using the specific identification method and are included in noninterest income. Premiums are amortized, and discounts are accreted using the interest method over the contractual lives of investment securities. Investment securities that are bought and held principally for the purpose of selling them in the near term, in order to generate profits from market appreciation, are classified as trading account securities. Trading account securities are carried at market value. Interest on trading account securities is included in interest income. Profits or losses on trading account securities are included in noninterest income. All of the Company’s investment securities were classified as available-for-sale in 2018 and 2017. Transfers of securities between categories are recorded at fair value at the date of the transfer, with the accounting treatment of unrealized gains or losses determined by the category into which the security is transferred. Management evaluates each investment security at least quarterly, to determine if a decline in fair value below its amortized cost is an other-than-temporary impairment (“OTTI”), and more frequently when economic or market concerns warrant an evaluation. Factors considered in determining whether an other-than-temporary impairment was incurred include: (i) the length of time and the extent to which the fair value has been less than amortized cost; (ii) the financial condition and near-term prospects of the issuer; (iii) whether a decline in fair value is attributable to adverse conditions specifically related to the security or specific conditions in an industry or geographic area; (iv) the credit-worthiness of the issuer of the security; (v) whether dividend or interest payments have been reduced or have not been made; (vi) an adverse change in the remaining expected cash flows from the security such that the Company will not recover the amortized cost of the security; (vii) whether management intends to sell the security; and (viii) if it is more likely than not that management will be required to sell the security before recovery. If a decline is judged to be other-than-temporary, the individual security is written-down to fair value with the credit related component of the write-down included in earnings and the non-credit related component included in other comprehensive income or loss. The assessment of whether an other-than-temporary impairment exists involves a high degree of subjectivity and judgment and is based on information available to management at a point in time.
Loans held for sale	Loans held for sale: Loans held for sale consist of one-to-four family residential mortgages originated and intended for sale in the secondary market with servicing rights released. The loans are carried in aggregate at the lower of cost or estimated market value, based upon current delivery prices in the secondary mortgage market. Gains or losses on the sale of these loans are recognized in noninterest income at the time of sale using the specific identification method. Loan origination fees, net of certain direct loan origination costs, are included in net gains or losses upon the sale of the related mortgage loan. These loans are generally sold without servicing rights retained and without recourse.
Loans, net	Loans, net: Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at their outstanding unpaid principal balances, net of deferred fees or costs. Interest income is accrued on the principal amount outstanding. Loan origination fees, net of certain direct origination costs, are deferred and recognized over the contractual life of the related loan as an adjustment to yield using the effective interest method. Premiums and discounts on purchased loans are amortized as adjustments to interest income using the effective interest method. Delinquency fees are recognized in income when chargeable, assuming collectability is reasonably assured. Transfers of financial assets, which include loan participation sales, are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when: (i) the assets have been isolated from the Company; (ii) 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 (iii) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. The loan portfolio is segmented into commercial and retail loans. Commercial loans consist of commercial and commercial real estate loans. Retail loans consist of residential real estate and other consumer loans. The Company makes commercial loans for real estate development and other business purposes required by the customer base. The Company’s credit policies determine advance rates against the different forms of collateral that can be pledged against commercial loans. Typically, the majority of loans will be limited to a percentage of their underlying collateral values such as real estate values, equipment, eligible accounts receivable and inventory. Individual loan advance rates may be higher or lower depending upon the financial strength of the borrower and/or term of the loan. The assets financed through commercial loans are used within the business for its ongoing operation. Repayment of these kinds of loans generally comes from the cash flow of the business or the ongoing conversion of assets. Commercial real estate loans include long-term loans financing commercial properties. Repayment of these loans is dependent upon either the ongoing cash flow of the borrowing entity or the resale of or lease of the subject property. Commercial real estate loans typically require a loan to value of not greater than 80% and vary in terms. Commercial and commercial real estate loans generally have higher credit risk compared to residential mortgage loans and consumer loans, as they typically involve larger loan balances concentrated with single borrowers or groups of borrowers. In addition, the payment expectations on loans secured by income-producing properties typically depend on the successful operations of the related business and thus may be subject to a greater extent to adverse conditions in the real estate market and in the general economy. Loans secured by commercial real estate generally have larger balances and involve a greater degree of risk than one-to-four family residential mortgage loans. Of primary concern in commercial real estate lending is the borrower’s and any guarantor’s creditworthiness and the feasibility and cash flow potential of the financed project. Additional considerations include: location, market and geographic concentrations, loan to value, strength of guarantors and quality of tenants. Payments on loans secured by income properties often depend on successful operation and management of the properties. As a result, repayment of such loans may be subject, to a greater extent than residential real estate loans, to adverse conditions in the real estate market or the economy. To monitor cash flows on income properties, we require borrowers and loan guarantors, if any, to provide annual consolidated financial statements on commercial real estate loans and rent rolls where applicable. In reaching a decision on whether to make a commercial real estate loan, we consider and review a cash flow analysis of the borrower and guarantor, when applicable, and considers the net operating income of the property, the borrower’s expertise, credit history and profitability and the value of the underlying property. We have generally required that the properties securing these real estate loans have debt service coverage ratios, the ratio of earnings before debt service to debt service, of at least 1.2 times. An environmental report is obtained when the possibility exists that hazardous materials may have existed on the site, or the site may have been impacted by adjoining properties that handled hazardous materials. Residential mortgages, including home equity loans, are secured by the borrower’s residential real estate in either a first or second lien position. Residential mortgages have varying loan rates depending on the financial condition of the borrower and the loan to value ratio. Residential mortgages may have amortizations up to 30 years. Consumer loans include installment loans, car loans, and overdraft lines of credit. The majority of these loans are secured. Consumer loans may entail greater risk than do residential mortgage loans, particularly in the case of consumer loans that are unsecured or secured by assets that depreciate rapidly, such as motor vehicles. In the latter case, repossessed collateral for a defaulted consumer loan may not provide an adequate source of repayment for the outstanding loan and a small remaining deficiency often does not warrant further substantial collection efforts against the borrower. Consumer loan collections depend on the borrower’s continuing financial stability, and therefore are likely to be adversely affected by various factors, including job loss, divorce, illness or personal bankruptcy. Furthermore, the application of various federal and state laws, including federal and state insolvency laws, may limit the amount that can be recovered on such loans.
Off-balance sheet financial instruments	Off-balance sheet financial instruments: In the ordinary course of business, the Company enters into off-balance sheet financial instruments consisting of commitments to extend credit, unused portions of lines of credit and standby letters of credit. These financial instruments are recorded in the consolidated financial statements when they are funded. Fees on commercial letters of credit and on unused available lines of credit are recorded as service charges, fees and commissions and are included in noninterest income when earned. The Company records an allowance for off-balance sheet credit losses, if deemed necessary, separately as a liability.
Nonperforming assets	Nonperforming assets: Nonperforming assets consist of nonperforming loans and other real estate owned. Nonperforming loans include nonaccrual loans, troubled debt restructured loans and accruing loans past due 90 days or more. Past due status is based on contractual terms of the loan. Generally, a loan is classified as nonaccrual when it is determined that the collection of all or a portion of interest or principal is doubtful or when a default of interest or principal has existed for 90 days or more, unless the loan is well secured and in the process of collection. When a loan is placed on nonaccrual, interest accruals are discontinued, and uncollected accrued interest is reversed against income in the current period. Interest collections after a loan has been placed on nonaccrual status are credited to the principal balance. Interest earned that would have been recognized is credited to income over the remaining life of the loan using the effective yield method if the nonaccrual loan is returned to performing status. A nonaccrual loan is returned to performing status when the loan is current as to principal and interest and has performed according to the contractual terms for a minimum of six months. Troubled debt restructured loans are loans with original terms, interest rate, or both, that have been modified as a result of a deterioration in the borrower’s financial condition and a concession has been granted that the Company would not otherwise consider. Unless on nonaccrual, interest income on these loans is recognized when earned, using the interest method. The Company offers a variety of modifications to borrowers that would be considered concessions. The modification categories offered can generally fall within the following categories: • Rate Modification — A modification in which the interest rate is changed to a below market rate. • Term Modification — A modification in which the maturity date, timing of payments or frequency of payments is changed. • Interest Only Modification — A modification in which the loan is converted to interest only payments for a period of time. • Payment Modification — A modification in which the dollar amount of the payment is changed, other than an interest only modification described above. • Combination Modification — Any other type of modification, including the use of multiple categories above. The Company segments loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. Loans are individually analyzed for credit risk by classifying them within the Company’s internal risk rating system. The Company’s risk rating classifications are defined as follows: • Pass — A loan to borrowers with acceptable credit quality and risk that is not adversely classified as Substandard, Doubtful, Loss or designated as Special Mention. • Special Mention — A loan that has potential weaknesses that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the institution’s credit position at some future date. Special Mention loans are not adversely classified since they do not expose the Company to sufficient risk to warrant adverse classification. • Substandard — A loan that is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. • Doubtful — A loan classified as Doubtful has all the weaknesses inherent in one classified Substandard with the added characteristic that the weaknesses make the collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. • Loss — A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable loan is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be effected in the future. Other real estate owned is comprised of properties acquired through foreclosure proceedings or in-substance foreclosures. A loan is classified as in-substance foreclosure when the Company has taken possession of the collateral regardless of whether formal foreclosure proceedings take place. Other real estate owned is included in other assets and recorded at fair value less cost to sell at the time of acquisition, establishing a new cost basis. Any excess of the loan balance over the recorded value is charged to the allowance for loan losses. Subsequent declines in the recorded values of the properties prior to their disposal and costs to maintain the assets are included in other expenses. Any gain or loss realized upon disposal of other real estate owned is included in noninterest expense.
Allowance for loan losses	Allowance for loan losses: The allowance for loan losses represents management’s estimate of losses inherent in the loan portfolio as of the balance sheet date. The allowance for loan losses account is maintained through a provision for loan losses charged to earnings. Loans, or portions of loans, determined to be confirmed losses are charged against the allowance account and subsequent recoveries, if any, are credited to the account. A loss is considered confirmed when information available at the financial statement date indicates the loan, or a portion thereof, is uncollectible. Nonaccrual, troubled debt restructured, and loans deemed impaired at the time of acquisition are reviewed monthly to determine if carrying value reductions are warranted or if these classifications should be changed. Consumer loans are considered losses and charged-off when they are 120 days past due. Management evaluates the adequacy of the allowance for loan losses account quarterly. This assessment is based on past charge-off experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of underlying collateral, composition of the loan portfolio, current economic conditions and other relevant factors. This evaluation is inherently subjective as it requires material estimates that may be susceptible to significant revision as more information becomes available. Regulators, in reviewing the loan portfolio as part of the scope of a regulatory examination, may require the Company to increase its allowance for loan losses or take other actions that would require the Company to increase its allowance for loan losses. The allowance for loan losses is maintained at a level believed to be adequate to absorb probable credit losses related to specifically identified loans, as well as probable incurred losses inherent in the remainder of the loan portfolio as of the balance sheet date. The allowance for loan losses consists of an allocated element and an unallocated element. The allocated element consists of a specific allowance for impaired loans individually evaluated under Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 310, “Receivables,” and a formula portion for loss contingencies on those loans collectively evaluated under FASB ASC 450, “Contingencies.” A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. All amounts due according to the contractual terms means that both the contractual interest and principal payments of a loan will be collected as scheduled in the loan agreement. Factors considered by management in determining impairment include payment status, ability to pay and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. The Company recognizes interest income on impaired loans, including the recording of cash receipts for nonaccrual, restructured loans or accruing loans depending on the status of the impaired loan. Loans considered impaired under FASB ASC 310 are measured for impairment based on the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent. If the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent, is less than the recorded investment in the loan, a specific allowance for the loan will be established. The formula portion of the allowance for loan losses relates to large pools of smaller-balance homogeneous loans and those identified loans considered not individually impaired having similar characteristics as these loan pools. Loss contingencies for each of the major loan pools are determined by applying a total loss factor to the current balance outstanding for each individual pool. The total loss factor is comprised of a historical loss factor using a loss migration method plus qualitative factors, which adjust the historical loss factor for changes in trends, conditions and other relevant factors that may affect repayment of the loans in these pools as of the evaluation date. Loss migration involves determining the percentage of each pool that is expected to ultimately result in loss based on historical loss experience. Historical loss factors are based on the ratio of net loans charged-off to loans, net, for each of the major groups of loans evaluated and measured for impairment under FASB ASC 450. The historical loss factor for each pool is an average of the Company’s historical net charge-off ratio for the most recent rolling eight quarters. Management adjusts these historical loss factors by qualitative factors that represent a number of environmental risks that may cause estimated credit losses associated with the current portfolio to differ from historical loss experience. These environmental risks include: (i) changes in lending policies and procedures including underwriting standards and collection, charge-off and recovery practices; (ii) changes in the composition and volume of the portfolio; (iii) changes in national, local and industry conditions, including the effects of such changes on the value of underlying collateral for collateral-dependent loans; (iv) changes in the volume and severity of classified loans including past due, nonaccrual, troubled debt restructures and other loan modifications; (v) changes in the levels of, and trends in, charge-offs and recoveries; (vi) the existence and effect of any concentrations of credit and changes in the level of such concentrations; (vii) changes in the experience, ability and depth of lending management and other relevant staff; (viii) changes in the quality of the loan review system and the degree of oversight by the board of directors; and (ix) the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the current loan portfolio. Each environmental risk factor is assigned a value to reflect improving, stable or declining conditions based on management’s best judgment using relevant information available at the time of the evaluation. Adjustments to the factors are supported through documentation of changes in conditions in a narrative accompanying the allowance for loan loss calculation. Management revised its calculation for, and application of, qualitative factors applied to their identified segments of homogenous loan pools. Prior to the fourth quarter of 2018, management calculated separate and distinct qualitative factors for Riverview Bank and each of its three purchased portfolios as a result of loans previously acquired in business combinations. Management determined that it would calculate qualitative factors on a weighted average basis combined for Riverview Bank and all purchased portfolios for each identified segment of homogenous loan pools. This had the impact of reducing the overall rate of qualitative adjustment to historical losses but was offset by an increased level of reserve on acquired performing loans as a result of normal accretion of acquisition related fair value marks. This change in methodology did not have a material impact on the amount of the allowance for loan losses at December 31, 2018, the date of the change, as compared to the prior methodology. The unallocated element, if any, is used to cover inherent losses that exist as of the evaluation date, but which have not been identified as part of the allocated allowance using the above impairment evaluation methodology due to limitations in the process. One such limitation is the imprecision of accurately estimating the impact current economic conditions will have on historical loss rates. Variations in the magnitude of impact may cause estimated credit losses associated with the current portfolio to differ from historical loss experience, resulting in an allowance that is higher or lower than the anticipated level. Management establishes the unallocated element of the allowance by considering environmental risks similar to the ones used for determining the qualitative factors. Management continually monitors trends in historical and qualitative factors, including trends in the volume, composition and credit quality of the portfolio. The reasonableness of the unallocated element is evaluated through monitoring trends in its level to determine if changes from period to period are directionally consistent with changes in the loan portfolio. Management believes the level of the allowance for loan losses was adequate to absorb probable credit losses as of December 31, 2018.
Premises and equipment, net	Premises and equipment, net: Land is stated at cost. Premises, equipment and leasehold improvements are stated at cost less accumulated depreciation and amortization. The cost of routine maintenance and repairs is expensed as incurred. The cost of major replacements, renewals and betterments is capitalized. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation and amortization are eliminated, and any resulting gain or loss is reflected in noninterest income. Depreciation and amortization are computed principally using the straight-line method based on the following estimated useful lives of the related assets, or in the case of leasehold improvements, to the expected terms of the leases, if shorter: Premises and leasehold improvements 7 – 50 years Leasehold improvements 10 – 30 years Furniture, fixtures and equipment 3 – 10 years
Business combinations, goodwill and other intangible assets, net	Business combinations, goodwill and other intangible assets, net: The Company accounts for its acquisitions using the purchase accounting method. Purchase accounting requires the total purchase price to be allocated to the estimated fair values of assets acquired and liabilities assumed, including certain intangible assets that must be recognized. Typically, this allocation results in the purchase price exceeding the fair value of net assets acquired, which is recorded as goodwill. Core deposit intangibles are a measure of the value of checking, money market and savings deposits acquired in business combinations accounted for under the purchase method. Core deposit intangibles and other identified intangibles with finite useful lives are amortized using the sum of the year’s digits over their estimated useful lives of up to ten years. Loans that the Company acquires in connection with acquisitions are recorded at fair value with no carryover of the related allowance for credit losses. Fair value of the loans involves estimating the amount and timing of principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. The excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable discount and is recognized into interest income over the remaining life of the loan. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the non-accretable discount. The non-accretable discount includes estimated future credit losses expected to be incurred over the life of the loan. Subsequent decreases to the expected cash flows will require the Company to evaluate the need for an additional allowance for credit losses. Subsequent improvement in expected cash flows will result in the reversal of a corresponding amount of the non-accretable discount which the Company will then reclassify as accretable discount that will be recognized into interest income over the remaining life of the loan. Acquired loans that met the criteria for nonaccrual of interest prior to the acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent. As such, the Company may no longer consider the loan to be nonaccrual or nonperforming and may accrue interest on these loans, including the impact of any accretable discount. In addition, charge-offs on such loans would be first applied to the non-accretable difference portion of the fair value adjustment. The Company accounts for performing loans acquired in business combinations using the contractual cash flows method of recognizing discount accretion based on the acquired loans’ contractual cash flows. Purchased performing loans are recorded at fair value, including a credit discount. The fair value discount is accreted as an adjustment to yield over the estimated lives of the loans. There is no allowance for loan losses established at the acquisition date for purchased performing loans. A provision for loan losses is recorded for any further deterioration in these loans subsequent to the acquisition. Customer list intangibles are also included in intangible assets as a result of the purchase of the wealth management companies. These intangibles are amortized as an expense over ten years using the sum of the years’ amortization method. Goodwill and other intangible assets are tested for impairment annually during the fourth quarter of each year or when circumstances arise indicating impairment may have occurred. In making this assessment that impairment has occurred, management considers a number of factors including, but not limited to, operating results, business plans, economic projections, anticipated future cash flows, and current market data. There are inherent uncertainties related to these factors and management’s judgment in applying them to the analysis of impairment. Changes in economic and operating conditions, as well as other factors, could result in impairment in future periods. Any impairment losses arising from such testing would be reported in the Consolidated Statements of Income and Comprehensive Income as a separate line item within operations. There were no impairment losses recognized as a result of periodic impairment testing in each of the two-years ended December 31, 2018.
Restricted equity securities	Restricted equity securities: As a member of the Federal Home Loan Bank of Pittsburgh (“FHLB-Pgh”) and Atlantic Community Bankers Bank (“ACBB”), the Company is required to purchase and hold stock in these entities to satisfy membership and borrowing requirements. This stock is restricted in that it can only be redeemed by these entities or to another member institution and all redemptions of stock must be at par. As a result of these restrictions, restricted equity stock is unlike other investment securities as there is no trading market in it and the transfer price is determined by the FHLB-Pgh and ACBB membership rules and not by market participants. Therefore, it is accounted for at historical cost and evaluated for impairment. The carrying value of restricted stock is included in other assets.
Bank owned life insurance	Bank owned life insurance: The Company invests in bank owned life insurance (“BOLI”) as a source of funding for employee benefit expenses. BOLI involves the purchasing of life insurance by the Bank on certain of its directors and employees. The Bank is the owner and beneficiary of the policies. This life insurance investment is carried at the cash surrender value of the underlying policies and is included in other assets. Income from increases in cash surrender value of the policies is included in noninterest income.
Pension and post-retirement benefit plans	Pension and post-retirement benefit plans: The Company sponsors various pension plans covering substantially all employees. The Company also provides post-retirement benefit plans other than pensions, consisting principally of life insurance benefits, to eligible retirees. The liabilities and annual income or expense of the Company’s pension and other post-retirement benefit plans are determined using methodologies that involve several actuarial assumptions, the most significant of which are the discount rate and the long-term rate of asset return, based on the market-related value of assets. The fair values of plan assets are determined based on prevailing market prices or estimated fair value for investments with no available quoted prices.
Statements of Cash Flows	Statements of Cash Flows : The Consolidated Statements of Cash Flows are presented using the indirect method. For purposes of cash flow, cash and cash equivalents include cash on hand, cash items in the process of collection, noninterest-bearing and interest-bearing deposits in other banks and federal funds sold.
Fair value of financial instruments	Fair value of financial instruments: The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosure under GAAP. Fair value estimates are calculated without attempting to estimate the value of anticipated future business and the value of certain assets and liabilities that are not considered financial. Accordingly, such assets and liabilities are excluded from disclosure requirements. In accordance with FASB ASC 820, “Fair Value Measurements and Disclosures”, fair value is the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined based upon quoted market prices. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets. In many cases, these values cannot be realized in immediate settlement of the instrument. Current fair value guidance provides a consistent definition of fair value, which focuses on exit price in an orderly transaction that is not a forced liquidation or distressed sale between participants at the measurement date under current market conditions. If there has been a significant decrease in the volume and level of activity for the asset or liability, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under current market conditions depends on the facts and circumstances and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under current market conditions. In accordance with GAAP, the Company groups its assets and liabilities, generally measured at fair value, into three levels based on market information or other fair value estimates in which the assets and liabilities are traded or valued, and the reliability of the assumptions used to determine fair value. These levels include: • Level 1: Unadjusted quoted prices of identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The following methods and assumptions were used by the Company to construct the summary table in Note 13 containing the fair values and related carrying amounts of financial instruments: Cash and cash equivalents: The carrying values of cash and cash equivalents as reported on the balance sheet approximate fair value. Investment securities available-for-sale: The fair values of debt securities are based on pricing from a matrix pricing model. Loans held for sale: The fair values of loans held for sale are based upon current delivery prices in the secondary mortgage market. Net Loans: At December 31, 2018, the exit price observations are obtained from an independent third-party using its proprietary valuation model and methodology and may not reflect actual or prospective market valuations. The valuation is based on the probability of default, loss given default, recovery delay, prepayment, and discount rate assumptions. The new methodology is a result of the adoption of ASU No. 2016-01. At December 31, 2017, for adjustable-rate loans that reprice frequently and with no significant credit risk, fair values are based on carrying values. The fair values of other non-impaired loans are estimated using discounted cash flow analysis, using interest rates currently offered in the market for loans with similar terms to borrowers of similar credit risk. Fair values for impaired loans are estimated using discounted cash flow analysis determined by the loan review function or underlying collateral values, where applicable. In conjunction with the merger, the loans purchased were recorded at their acquisition date fair value. In order to record the loans at fair value, management made three different types of fair value adjustments. A market rate adjustment was made to adjust for the movement in market interest rates, irrespective of credit adjustments, compared to the stated rates of the acquired loans. A credit adjustment was made on pools of homogeneous loans representing the changes in credit quality of the underlying borrowers from the loan inception to the acquisition date. The credit adjustment on distressed loans represents the portion of the loan balance that has been deemed uncollectible based on the management’s expectations of future cash flows for each respective loan. Accrued interest receivable: The carrying value of accrued interest receivable as reported on the balance sheet approximates fair value. Restricted equity securities: The carrying values of restricted equity securities approximate fair value, due to the lack of marketability for these securities. Deposits: The fair values of noninterest-bearing deposits and savings, NOW and money market accounts are the amounts payable on demand at the reporting date. The fair value estimates do not include the benefit that results from such low-cost funding provided by the deposit liabilities compared to the cost of borrowing funds in the market. The carrying values of adjustable-rate, fixed-term time deposits approximate their fair values at the reporting date. For fixed-rate time deposits, the present value of future cash flows is used to estimate fair values. The discount rates used are the current rates offered for time deposits with similar maturities. Short-term borrowings: The carrying values of short-term borrowings approximate fair value. Long-term debt: The fair value of fixed-rate long-term debt is based on the present value of future cash flows. The discount rate used is the current rate offered for long-term debt with the same maturity. Accrued interest payable : The carrying value of accrued interest payable as reported on the balance sheet approximates fair value.
Off-balance sheet financial instruments	Off-balance sheet financial instruments: The majority of commitments to extend credit, unused portions of lines of credit and standby letters of credit carry current market interest rates if converted to loans. Because such commitments are generally unassignable of either the Company or the borrower, they only have value to the Company and the borrower. None of the commitments are subject to undue credit risk. The estimated fair values of off-balance sheet financial instruments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of off-balance sheet financial instruments was not material at December 31, 2018 and December 31, 2017.
Advertising	Advertising: The Company follows the policy of charging marketing and advertising costs to expense as incurred. Advertising expense for the years ended December 31, 2018 and 2017 was $647 and $456, respectively.
Income taxes	Income taxes: The Company accounts for income taxes in accordance with the income tax accounting guidance set forth in FASB ASC 740, “Income Taxes”. ASC 740 sets out a consistent framework to determine the appropriate level of tax reserves to maintain for uncertain tax positions. The calculation of the provision for income taxes is complex and requires the use of estimates and judgments. The Company has two accruals for income taxes: (i) an income tax payable representing the estimated net amount currently due to the federal government, net of any reserve for potential audit issues and any tax refunds; and (ii) a deferred federal income tax and related valuation accounts, representing the estimated impact of temporary differences between how the Company recognizes its assets and liabilities under GAAP, and how such assets and liabilities are recognized under federal tax law. Deferred income taxes are provided on the balance sheet method whereby deferred tax assets are recognized for deductible temporary differences and deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax basis. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. Deferred tax assets and liabilities are adjusted for the effects of changes in tax laws and rates on the effective date. A tax position is recognized as a benefit only if it is more likely than not that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that has a likelihood of being realized on examination of more than 50 percent. For tax positions not meeting the more likely than not threshold, no tax benefit is recorded. Under the more likely than not threshold guidelines, the Company believes no significant uncertain tax positions exist, either individually or in the aggregate, that would give rise to the non-recognition of an existing tax benefit. The Company had no material unrecognized tax benefits or accrued interest and penalties for any year in the three-year period ended December 31, 2018. On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act (“TCJA”). The legislation significantly changes U.S. tax law by, among other things, lowering the corporate income tax rate and changes to business-related exclusions. The TCJA permanently reduces the U.S. corporate income tax rate from a maximum of 35% to a flat 21% rate, effective January 1, 2018. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income at the time of enactment of such change in tax rates. Accordingly, in the fourth quarter 2017 a tax expense of $3,888 was recorded for the effects of the legislation. As applicable, the Company recognizes accrued interest and penalties assessed as a result of a taxing authority examination through income tax expense. The Company files consolidated income tax returns in the United States of America and various states’ jurisdictions. With limited exception, the Company is no longer subject to federal and state income tax examinations by taxing authorities for years before 2015.
Other comprehensive income (loss)	Other comprehensive income (loss): The components of other comprehensive income (loss) and their related tax effects are reported in the Consolidated Statements of Income and Comprehensive Income (Loss). The accumulated other comprehensive income (loss) included in the Consolidated Balance Sheets relates to net unrealized gains and losses on investment securities available-for-sale and benefit plan adjustments. The components of accumulated other comprehensive income (loss) included in stockholders’ equity at December 31, 2018 and 2017 are as follows: December 31 2018 2017 Net unrealized gain (loss) on investment securities available-for-sale $ (2,183 ) $ (1,131 ) Income tax expense (benefit) (458 ) (238 ) Net of income taxes (1,725 ) (893 ) Benefit plan adjustments (1,132 ) (869 ) Income tax expense (benefit) (238 ) (183 ) Net of income taxes (894 ) (686 ) Accumulated other comprehensive loss $ (2,619 ) $ (1,579 ) Other comprehensive income (loss) and related tax effects for the years ended December 31, 2018 and 2017 are as follows: Year ended December 31 2018 2017 Unrealized gain (loss) on investment securities available-for-sale $ (1,012 ) $ 1,471 Net (gain) loss on the sale of investment securities available-for-sale (1) (40 ) (89 ) Benefit plans: Amortization of actuarial loss (gain) (2) 81 49 Actuarial (loss) gain (346 ) (103 ) Net change in benefit plan liabilities (265 ) (54 ) Other comprehensive income (loss) gain before taxes (1,317 ) 1,328 Income tax expense (benefit) (277 ) 451 Other comprehensive income (loss) $ (1,040 ) $ 877 (1) Represents amounts reclassified out of accumulated comprehensive income and included in gains on sale of investment securities on the consolidated statements of income and comprehensive income. (2) Represents amounts reclassified out of accumulated comprehensive income and included in the computation of net periodic pension expense. Refer to Note 15 included in these consolidated financial statements.
Earnings per share	Earnings per share: Basic earnings per share is computed by dividing net income (loss) allocated to common stockholders divided by the weighted-average number of common shares outstanding during the period. Net income (loss) allocated to common stockholders is net income (loss) adjusted for preferred stock dividends including dividends declared, less income (loss) allocated to participating securities. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustment to income that would result from the assumed issuance. The following table provides a reconciliation between the computation of basic earnings per share and diluted earnings per share for the years ended December 31, 2018 and 2017: For the Year Ended December 31 2018 2017 Numerator: Net income (loss) $ 10,858 $ (4,911 ) Dividends on preferred stock (371 ) Net income (loss) available to common stockholders 10,858 (5,282 ) Undistributed income (loss) allocated to preferred stockholders 475 Income (loss) allocated to common stockholders $ 10,858 $ (4,807 ) Denominator: Basic 9,096,142 5,260,537 Dilutive options 52,155 Diluted 9,148,297 5,260,537 Earnings per share: Basic $ 1.19 $ (0.91 ) Diluted $ 1.19 $ (0.91 ) Common stock equivalents outstanding that are anti-dilutive and thus excluded from the calculation of the diluted number of shares represented above were 43,350 in 2018 and 298,246 in 2017. On January 20, 2017, Riverview announced that it entered into agreements with accredited investors and qualified institutional buyers to raise approximately $17.0 million in common and preferred equity, before expenses, through the private placement of 269,885 shares of its no par value common stock at a price of $10.50 per share and 1,348,809 shares of a newly created Series A convertible, perpetual preferred stock (the “Series A preferred stock”) at a price of $10.50 per share. Effective as of the close of business on June 22, 2017, the Company filed an amendment to the Articles of Incorporation to authorize a class of non-voting common stock after obtaining shareholder approval on June 21, 2017. As a result, each share of Series A preferred stock was automatically converted into one share of non-voting common stock as of the effective date. The non-voting common stock has the same relative rights as, and is identical in all respects with, each other share of common stock of the Company, except that holders of non-voting common stock do not have voting rights.
Stock-based compensation	Stock-based compensation: The Company recognizes all share-based payments to employees in the consolidated statement of operations based on their grant date fair values. The fair value of such equity instruments is recognized as an expense in the historical consolidated financial statements as services are performed. The Company uses the Black-Scholes Model to estimate the fair value of each option on the date of grant. The Black-Scholes Model estimates the fair value of employee stock options using a pricing model which takes into consideration the exercise price of the option, the expected life of the option, the current market price and its expected volatility, the expected dividends on the stock and the current risk-free interest rate for the expected life of the option. The Company typically grants stock options to employees with an exercise price equal to the fair value of the shares at the date of grant. The fair value of restricted stock is equivalent to the fair value on the date of grant and is amortized over the vesting period.
Recent Accounting Standards	Recent Accounting Standards In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities”. This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (i) require equity investments, except those accounted for under the equity method of accounting or those that result in consolidation of the investee, to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (ii) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (iii) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (iv) eliminate the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (v) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (vi) require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (vii) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset , securities or loans and receivables, on the balance sheet or the accompanying notes to the financial statements; and (viii) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The Company measured the fair value of its loan portfolio using an exit price notion for the fiscal years beginning after December 31, 2017, including interim periods thereafter. The adoption of ASU 2016-01 did not have a material effect on our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases”. From the lessee’s perspective, the new standard establishes a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement for a lessee. From the lessor’s perspective, the new standard requires a lessor to classify leases as either sales-type, finance or operating. A lease will be treated as a sale if it transfers all of the risks and rewards, as well as control of the underlying asset, to the lessee. If risks and rewards are conveyed without the transfer of control, the lease is treated as a financing. If the lessor doesn’t convey risks and rewards or control, an operating lease results. In July 2018, the FASB issued ASU No. 2018-10, “Codification Improvements to Topic 842, Leases”. The amendments in this Update corrects inconsistencies in the guidance and clarifies how to apply certain provisions of the lease standard. The amendments target 16 issues including: residual value guarantees; rate implicit in the lease; lessee reassessment of lease classification; lessor reassessment of lease term and purchase option; variable lease payments that depend on an index or a rate; investment tax credits; lease term and purchase option; transition guidance for amounts previously recognized in business combinations; recognition of certain transition adjustments in earnings rather than equity; transition guidance for leases previously classified as capital leases under Topic 840; transition guidance for modifications to leases previously classified as direct financing or sales-type leases under Topic 840; transition guidance for sale and leaseback transactions; impairment of net investment in the lease; unguaranteed residual asset; effect of initial direct costs on rate implicit in the lease; and failed sale and leaseback transaction. In July 2018, the FASB also issued ASU No. 2018-11, “Leases (Topic 842): Targeted Improvements”. This amendment provides an optional transition method for adopting the new leases guidance in Topic 842 that will eliminate comparative period reporting under the new guidance in the year of adoption. This option addresses preparer feedback about the related costs of presenting comparative periods under Topic 842. Under the optional transition method, only the most recent period presented will reflect the adoption of Topic 842 with a cumulative-effect adjustment to the opening balance of retained earnings, and the comparative prior periods will be reported under the previous guidance in Topic 840. In addition, the ASU offers lessors a practical expedient that mirrors the practical expedient already provided to lessees in ASU 2016-02, “Leases (Topic 842).” The new practical expedient will allow lessors to elect, by class of underlying asset, to not separate non-lease components from the associated lease component when specified conditions are met. Examples of non-lease components include equipment maintenance services, common area maintenance services in real estate, or other goods or services provided to the lessee apart from the right to use the underlying asset. The practical expedient must be applied consistently for all lease contracts. In December 2018, the FASB issued ASU 2018-20, “Leases (Topic 842)—Narrow-Scope Improvements for Lessors,” which provides for certain policy elections and changes lessor accounting for sales and similar taxes and certain lessor costs. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. Upon adoption of ASU 2016-02, ASU 2018-10, ASU 2018-11 and ASU 2018-20 on January 1, 2019, we expect to recognize right-of-use assets and related lease liabilities totaling $3,719. We expect to elect to apply certain practical expedients provided under ASU 2016-02 whereby we will not reassess (i) whether any expired or existing contracts are or contain leases, (ii) the lease classification for any expired or existing leases and (iii) initial direct costs for any existing leases. We also do not expect to apply the recognition requirements of ASU 2016-02 to any short-term leases, as defined by related accounting guidance. We expect to account for lease and non-lease components separately because such amounts are readily determinable under our lease contracts and because we expect this election will result in a lower impact on our balance sheet. We expect to utilize the transition approach prescribed by ASU 2018-11. The adoption of the guidance on January 1, 2019, is not expected to have a significant impact on the Company’s financial position or operating results. In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 requires an entity to utilize a new impairment model known as the current expected credit loss (“CECL”) model to estimate its lifetime “expected credit loss” and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in earlier recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. In November 2018, the FASB issued ASU No. 2018-19—Codification Improvements to Topic 326, Financial Instruments—Credit Losses. The amendments clarify that receivables arising from operating leases are not within the scope of Subtopic 326-20. Instead, impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. During the third quarter of 2018, we selected a vendor-based solution and are currently collecting and reviewing loan data for use in this model. The Company is currently assessing the impact that this new guidance will have on its consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments”. The update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. This new accounting guidance will be effective for interim and annual reporting periods beginning after December 15, 2019. The Company does not expect the adoption of the new accounting guidance to have a material effect on the statement of cash flows. In December 2016, the FASB issued ASU No. 2016-20, “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers”. ASU 2016-20 updates the new revenue standard by clarifying issues that have arisen from ASU 2014-09, but does not change the core principle of the new standard. The issues addressed in this ASU include: (i) Loan guarantee fees; (ii) Impairment testing of contract costs; (iii) Interaction of impairment testing with guidance in other topics; (iv) Provisions for losses on construction-type and production-type contracts; (v) Scope of Topic 606; (vi) Disclosure of remaining performance obligations; (vii) Disclosure of prior-period performance obligations; (viii) Contract modifications; (ix) Contract asset vs. receivable; (x) Refund liability; (xi) Advertising costs; (xii) Fixed-odds wagering contracts in the casino industry; and (xiii) Cost capitalization for advisors to private funds and public funds. The updated guidance is effective for interim and annual reporting periods beginning after December 15, 2017. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this new guidance recognized at the date of initial application. Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the new guidance did not have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company completed its overall assessment of revenue streams and review of related contracts potentially affected by the ASU, including trust and asset management fees, deposit related fees, and interchange fees. Based on this assessment, the Company concluded that ASU 2014-09 did not materially change the method in which the Company currently recognizes revenue for these revenue streams. The Company adopted ASU 2014-09 and its related amendments on its required effective date of January 1, 2018 utilizing the modified retrospective approach. Since there was no net income impact upon adoption of the new guidance, a cumulative effect adjustment to opening retained earnings was not deemed necessary. The adoption of ASU 2016-20 and 2014-09 did not have a material effect on our consolidated financial statements. See Note 14 Revenue Recognition for more information. In January 2017, the FASB issued ASU No. 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business”. The ASU clarifies the definition of a business to assist with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The adoption of ASU No. 2017-01 did not have a material effect on our consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment”. The ASU simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. The Company should perform its goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value. The impairment charge is limited to the amount of goodwill allocated to that reporting unit. The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for goodwill impairment tests performed on testing dates after January 1, 2017. The guidance is not expected to have a significant impact on the Company’s financial positions, results of operations or disclosures. In February 2017, the FASB issued ASU No. 2017-05, “Other Income—Gains and Losses from the Derecognition of Nonfinancial Assets (Topic 610): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets”. The amendments clarify that a financial asset is within the scope of Topic 610 if it meets the definition of an in substance nonfinancial asset. The amendments also define the term in substance nonfinancial asset. The amendments clarify that nonfinancial assets within the scope of Topic 610 may include nonfinancial assets transferred within a legal entity to a counterparty. For example, a parent may transfer control of nonfinancial assets by transferring ownership interests in a consolidated subsidiary. A contract that includes the transfer of ownership interests in one or more consolidated subsidiaries is within the scope of Topic 610 if substantially all of the fair value of the assets that are promised to the counterparty in a contract is concentrated in nonfinancial assets. The amendments clarify that an entity should identify each distinct nonfinancial asset or in substance nonfinancial asset promised to a counterparty and derecognize each asset when a counterparty obtains control of it. The guidance is effective for public business entities for annual periods beginning after December 15, 2017 and interim periods therein. Entities may use either a full or modified approach to adopt the ASU. The adoption of ASU No. 2017-05 did not have a material effect on our consolidated financial statements. In , the FASB issued ASU No. - , “Compensation—Retirement Benefits (Topic ”, which requires employers that offer or maintain defined benefit plans to disaggregate the service component from the other components of net benefit cost and provides guidance on presentation of the service component and the other components of net benefit cost in the statement of operations. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December , . The adoption of ASU No. - did not have a material effect on our consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-08, “Receivables—Nonrefundable Fees and Other Costs (Topic 310), Premium Amortization on Purchased Callable Debt Securities”. These amendments shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The amendments should be applied on a modified retrospective basis, with a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company does not expect the adoption of ASU No. 2017-08 to have a material effect on our consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, “Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting”. This ASU clarifies which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. Specifically, an entity would not apply modification accounting if the fair value, vesting conditions, and classification of the awards are the same immediately before and after the modification. This ASU is effective for fiscal years beginning after December 15, 2017, and interims periods within those fiscal years. The adoption of ASU No. 2017-09 did not have a material effect on our consolidated financial statements. In August 2017, the FASB issued ASU No. 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities”. The amendments in the Update better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Company does not expect the adoption of ASU No. 2017-12 to have a material effect on our consolidated financial statements. In September 2017, the FASB issued ASU No. 2017-13, “Revenue Recognition (Topic 605), Revenue from Contracts with Customers (Topic 606), Leases (Topic 840), and Leases (Topic 842)”. This Accounting Standards Update adds SEC paragraphs pursuant to the SEC Staff Announcement at the July 20, 2017 Emerging Issues Task Force (EITF) meeting. The July announcement addresses Transition Related to Accounting Standards Updates No. 2014-09, Revenue from Contracts with Customers (Topic 606), and No. 2016-02, Leases (Topic 842). This Update also supersedes SEC paragraphs pursuant to the rescission of SEC Staff Announcement, “Accounting for Management Fees Based on a Formula,” effective upon the initial adoption of Topic 606, Revenue from Contracts with Customers, and SEC Staff Announcement, “Lessor Consideration of Third-Party Value Guarantees,” effective upon the initial adoption of Topic 842, Leases. The amendments in this Update also rescind three SEC Observer Comments effective upon the initial adoption of Topic 842. One SEC Staff Observer comment is being moved to Topic 842. The adoption of ASU 2017-13 did not have a material effect on our consolidated financial statements. In November 2017, the FASB issued ASU No. 2017-14 “Income Statement—Reporting Comprehensive Income (Topic 220), Revenue Recognition (Topic 605), and Revenue from Contracts with Customers (Topic 606)”. This Accounting Standards Update amends SEC paragraphs pursuant to the SEC Staff Accounting Bulletin No. 116 and SEC Release No. 33-10403, which bring existing guidance into conformity with Topic 606, Revenue from Contracts with Customers. The adoption of ASU No. 2017-14 did not have a material effect on our consolidated financial statements. In February 2018, the FASB issued ASU No. 2018-02, “Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income”. The amendments in this Update allow for a reclassification of stranded tax effects resulting from the Tax Cuts and Jobs Act from accumulated other comprehensive income to retained earnings. The amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, and the Company elected to early adopt this guidance effective December 31, 2017. The adoption of ASU No. 2018-02 resulted in a reclassification of stranded tax effects of $259 from accumulated other comprehensive income (loss) to retained earnings. In February 2018, the FASB issued ASU No. 2018-03, “Technical Corrections and Improvements to Financial Instruments — Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities”, which makes minor changes to the ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities”. The technical corrections affect the following aspects of the ASU: (i) equity securities without a readily determinable fair value — discontinuation; (ii) equity securities without a readily determinable fair value — adjustments; (iii) forward contracts and purchased options; (iv) presentation requirements for certain fair value option liabilities; (v) fair value option liabilities denominated in a foreign currency and (vi) transition guidance for equity securities without a readily determinable fair value. The amendments in this Update are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years beginning after June 15, 2018. The adoption of ASU No. 2018-03 did not have a material effect on our consolidated financial statements. In March 2018, the FASB issued ASU No. 2018-05, “Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin [SAB] No. 118”. The ASU adds seven paragraphs to ASC 740, Income Taxes, that contain SEC guidance related to SAB 118 codified as SEC SAB Topic 5.EE, “Income Tax Accounting Implications of the Tax Cuts and Jobs Act”). The adoption of ASU No. 2018-05 did not have a material effect on our consolidated financial statements. In May 2018, the FASB issued ASU No. 2018-06, “Codification Improvements to Topic 942, Financial Services—Depository and Lending”. The amendments in this Update supersede the guidance in Subtopic 942-740, Financial Services—Depository and Lending—Income Taxes, that is related to Circular 202 because that guidance has been rescinded by the Office of the Comptroller of the Currency (“OCC”) and no longer is relevant. The amendments in this Update were effective upon issuance of this Update. The adoption of ASU No. 2018-06 did not have a material effect on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement”. The amendments in this Update improve the effectiveness of fair value measurement disclosures by modifying the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in FASB Concepts Statement, Conceptual Framework for Financial Reporting—Chapter 8: Notes to Financial Statements, including the consideration of costs and benefits. The ASU is effective for all entities in fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted. In addition, an entity may early adopt any of the removed or modified disclosures immediately and delay adoption of the new disclosures until the effective date. The guidance is not expected to have a significant impact on the Company’s financial positions, results of operations or disclosures. In August 2018, the FASB issued ASU No. 2018-14, “Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20)—Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans”. Subtopic 715-20 addresses the disclosure of other accounting and reporting requirements related to single-employer defined benefit pension or other postretirement benefit plans. The amendments in this Update remove disclosures that no longer are considered cost-beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. Although narrow in scope, the amendments are considered an important part of the Board’s efforts to improve the effectiveness of disclosures in the notes to financial statements by applying concepts in the FASB Concepts Statement, Conceptual Framework for Financial Reporting—Chapter 8: Notes to Financial Statements. The amendments in this Update apply to all employers that sponsor defined benefit pension or other postretirement plans. The ASU is effective for all entities in fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. The guidance is not expected to have a significant impact on the Company’s financial positions, results of operations or disclosures.

Summary of significant accoun_3

Summary of significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives of Related Assets and Leasehold Improvements	Depreciation and amortization are computed principally using the straight-line method based on the following estimated useful lives of the related assets, or in the case of leasehold improvements, to the expected terms of the leases, if shorter: Premises and leasehold improvements 7 – 50 years Leasehold improvements 10 – 30 years Furniture, fixtures and equipment 3 – 10 years
Summary of Components of Accumulated Other Comprehensive Income (Loss)	December 31 2018 2017 Net unrealized gain (loss) on investment securities available-for-sale $ (2,183 ) $ (1,131 ) Income tax expense (benefit) (458 ) (238 ) Net of income taxes (1,725 ) (893 ) Benefit plan adjustments (1,132 ) (869 ) Income tax expense (benefit) (238 ) (183 ) Net of income taxes (894 ) (686 ) Accumulated other comprehensive loss $ (2,619 ) $ (1,579 )
Schedule of Other Comprehensive Income (Loss) and Related Tax Effects	Other comprehensive income (loss) and related tax effects for the years ended December 31, 2018 and 2017 are as follows: Year ended December 31 2018 2017 Unrealized gain (loss) on investment securities available-for-sale $ (1,012 ) $ 1,471 Net (gain) loss on the sale of investment securities available-for-sale (1) (40 ) (89 ) Benefit plans: Amortization of actuarial loss (gain) (2) 81 49 Actuarial (loss) gain (346 ) (103 ) Net change in benefit plan liabilities (265 ) (54 ) Other comprehensive income (loss) gain before taxes (1,317 ) 1,328 Income tax expense (benefit) (277 ) 451 Other comprehensive income (loss) $ (1,040 ) $ 877 (1) Represents amounts reclassified out of accumulated comprehensive income and included in gains on sale of investment securities on the consolidated statements of income and comprehensive income. (2) Represents amounts reclassified out of accumulated comprehensive income and included in the computation of net periodic pension expense. Refer to Note 15 included in these consolidated financial statements.
Computation of Earnings per Share	The following table provides a reconciliation between the computation of basic earnings per share and diluted earnings per share for the years ended December 31, 2018 and 2017: For the Year Ended December 31 2018 2017 Numerator: Net income (loss) $ 10,858 $ (4,911 ) Dividends on preferred stock (371 ) Net income (loss) available to common stockholders 10,858 (5,282 ) Undistributed income (loss) allocated to preferred stockholders 475 Income (loss) allocated to common stockholders $ 10,858 $ (4,807 ) Denominator: Basic 9,096,142 5,260,537 Dilutive options 52,155 Diluted 9,148,297 5,260,537 Earnings per share: Basic $ 1.19 $ (0.91 ) Diluted $ 1.19 $ (0.91 )

Merger accounting (Tables)

Merger accounting (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of Information Concerning Impaired Loans	The following tables summarize information concerning impaired loans as of and for the years ended December 31, 2018 and 2017, by major loan classification: For the Year Ended December 31, 2018 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance: Commercial $ 149 $ 149 $ 459 $ 564 Real estate: Construction Commercial 4,284 4,284 6,382 2,846 Residential 2,466 2,466 2,875 460 Consumer Total 6,899 6,899 9,716 3,870 With an allowance recorded: Commercial 1,249 1,249 $ 382 1,117 7 Real estate: Construction Commercial 534 534 78 676 17 Residential 181 319 28 184 3 Consumer Total 1,964 2,102 488 1,977 27 Commercial 1,398 1,398 382 1,576 571 Real estate: Construction Commercial 4,818 4,818 78 7,058 2,863 Residential 2,647 2,785 28 3,059 463 Consumer Total $ 8,863 $ 9,001 $ 488 $ 11,693 $ 3,897 For the Year Ended December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance: Commercial $ 1,107 $ 1,107 $ 1,210 $ 77 Real estate: Construction Commercial 9,399 9,399 10,164 340 Residential 3,197 3,215 2,896 149 Consumer Total 13,703 13,721 14,270 566 With an allowance recorded: Commercial 185 185 $ 56 186 1 Real estate: Construction Commercial 531 531 76 532 23 Residential 340 478 92 339 12 Consumer Total 1,056 1,194 224 1,057 36 Commercial 1,292 1,292 56 1,396 78 Real estate: Construction Commercial 9,930 9,930 76 10,696 363 Residential 3,537 3,693 92 3,235 161 Consumer Total $ 14,759 $ 14,915 $ 224 $ 15,327 $ 602
CBT Financial Corp [Member]
Schedule of Calculation of Goodwill	Purchase Price Consideration in Common Stock: CBT shares outstanding exchanged 1,445,474 Exchange ratio 2.86 Riverview shares issued 4,134,056 Less: fractional shares issued to CBT shareholders 111 Riverview shares issued to CBT shareholders 4,133,945 Value assigned to Riverview shares $ 13.20 Purchase price $ 54,568 Purchase price consideration for fractional shares 1 Total Purchase Price 54,569 Net Assets Acquired: Cash and due from banks $ 32,022 Investment securities available-for-sale 43,869 Loans, net 382,461 Accrued interest receivable 894 Premises and equipment 6,143 Other assets 21,730 Deposits (438,845 ) Long-term debt (6,801 ) Accrued interest payable (256 ) Other liabilities (6,323 ) Net assets acquired 34,894 Goodwill resulting from merger $ 19,675
Fair Value Adjustments Made to Amortized Cost Basis in Order to Present a Fair Value of the Loans Acquired	The table below illustrates the fair value adjustments made to the amortized cost basis to present a fair value of the loans acquired. The credit adjustment on purchased credit impaired loans was derived in accordance with ASC 310-30 and represents the portion of the loan balances that has been deemed uncollectible based on the Company’s expectations of future cash flows for each respective loan. Gross amortized cost basis at October 1, 2017 $ 393,821 Interest rate fair value adjustment on pools of homogeneous loans 2,356 Credit fair value adjustment on pools of homogeneous loans (5,627 ) Credit and interest fair value adjustment on purchased credit impaired loans (8,089 ) Fair value of acquired loans at October 1, 2017 $ 382,461
Schedule of Information Concerning Impaired Loans	The following is a summary of the acquired impaired loans from the merger with CBT Bank: Acquired Impaired Loans Contractually required principal and interest at acquisition $ 16,682 Contractual cash flows not expected to be collected (nonaccretable discount) (6,033 ) Expected cash flows at acquisition 10,649 Interest component of expected cash flows (accretable discount) (2,056 ) Fair value of acquired loans $ 8,593
Summary of Merger Related Costs Included in Consolidated Statements of Income	A summary of merger related costs included in the consolidated statements of income for the years ended December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Accounting $ 119 Legal and consulting $ 49 623 Salaries and benefits 220 1,779 Equipment disposition and contract termination 3 634 System conversion/deconversion costs 71 368 Other 210 151 Total $ 553 $ 3,674
Merger proforma information	The following table presents unaudited pro forma information as if the merger between Riverview and CBT had been completed on January 1, 2016. The pro forma information does not necessarily reflect the results of operations that would have occurred had the Company merged with CBT at the beginning of 2016. Supplemental pro forma earnings were adjusted to exclude merger related costs. The expected future amortizations of the various fair value adjustments were included beginning in 2016. Cost savings are not reflected in the unaudited pro forma amounts for the periods presented. The pro forma financial information does not include the impact of possible business model changes, nor does it consider any potential impacts of current market conditions on revenues, expense efficiencies, or other factors. Year ended December 31, 2017 Net interest income after loan loss provision $ 36,187 Noninterest income 7,871 Noninterest expense 39,092 Net income $ 4,966 Net income per share $ 0.95

Investment securities (Tables)

Investment securities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Value of Investment Securities Available-for-Sale Aggregated by Investment Category	The amortized cost and fair value of investment securities available-for-sale aggregated by investment category at December 31, 2018 and 2017 are summarized as follows: December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value State and municipals: Taxable $ 34,025 $ 145 $ 892 $ 33,278 Tax-exempt 12,970 2 196 12,776 Mortgage-backed securities: U.S. Government agencies 23,715 61 106 23,670 U.S. Government-sponsored enterprises 26,635 11 451 26,195 Corporate debt obligations 9,515 757 8,758 Total $ 106,860 $ 219 $ 2,402 $ 104,677 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value State and municipals: Taxable $ 35,352 $ 334 $ 684 $ 35,002 Tax-exempt 16,325 47 64 16,308 Mortgage-backed securities: U.S. Government agencies 22,908 3 94 22,817 U.S. Government-sponsored enterprises 10,218 19 148 10,089 Corporate debt obligations 9,529 544 8,985 Total $ 94,332 $ 403 $ 1,534 $ 93,201
Schedule of Debt Securities Classified Available-for-Sale Maturity Distribution of Fair Value	The maturity distribution of the fair value, which is the net carrying amount of the debt securities classified as available-for-sale at December 31, 2018, is summarized as follows: December 31, 2018 Fair Value Within one year $ 2,283 After one but within five years 4,702 After five but within ten years 13,959 After ten years 33,868 54,812 Mortgage-backed securities 49,865 Total $ 104,677
Schedule of Fair Value Gross Unrealized Losses of Investment Securities Unrealized Losses	The fair value and gross unrealized losses of investment securities with unrealized losses for which an other-than-temporary impairment (“OTTI”) has not been recognized at December 31, 2018 and 2017, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position, are summarized as follows: Less Than 12 Months 12 Months or More Total December 31, 2018 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and municipals: Taxable $ 2,300 $ 4 $ 22,943 $ 888 $ 25,243 $ 892 Tax-exempt 1,950 32 9,556 164 11,506 196 Mortgage-backed securities: U.S. Government agencies 7,862 66 1,216 40 9,078 106 U.S. Government-sponsored enterprises 18,110 163 7,133 288 25,243 451 Corporate debt obligations 8,758 757 8,758 757 Total $ 30,222 $ 265 $ 49,606 $ 2,137 $ 79,828 $ 2,402 Less Than 12 Months 12 Months or More Total December 31, 2017 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses State and municipals: Taxable $ 4,757 $ 30 $ 20,185 $ 654 $ 24,942 $ 684 Tax-exempt 10,506 64 10,506 64 Mortgage-backed securities: U.S. Government agencies 16,746 87 193 7 16,939 94 U.S. Government-sponsored enterprises 4,294 23 4,174 125 8,468 148 Corporate debt obligations 3,800 200 5,185 344 8,985 544 Total $ 40,103 $ 404 $ 29,737 $ 1,130 $ 69,840 $ 1,534

Loans, net and allowance for _2

Loans, net and allowance for loan losses (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Schedule of Loans Outstanding	The major classifications of loans outstanding, net of deferred loan origination fees and costs at December 31, 2018 and 2017 are summarized as follows. Net deferred loan costs were $1,026 and $863 at December 31, 2018 and 2017, respectively. December 31 2018 2017 Commercial $ 122,919 $ 140,116 Real estate: Construction 39,556 34,405 Commercial 497,597 526,230 Residential 221,115 240,626 Consumer 11,997 14,594 Total $ 893,184 $ 955,971
Schedule of Allowance for Loan Losses Account by Major Classification of Loan	The changes in the allowance for loan losses account by major classification of loan for the years ended December 31, 2018 and 2017 are summarized as follows: Real Estate December 31, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance January 1, 2018 $ 1,206 $ 379 $ 2,963 $ 1,340 $ 37 $ 381 $ 6,306 Charge-offs (206 ) (104 ) (437 ) (747 ) Recoveries 11 6 31 126 174 Provisions 151 25 329 19 324 (233 ) 615 Ending balance $ 1,162 $ 404 $ 3,298 $ 1,286 $ 50 $ 148 $ 6,348 Real Estate December 31, 2017 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance January 1, 2017 $ 629 $ 160 $ 2,110 $ 789 $ 44 $ 3,732 Charge-offs (43 ) (78 ) (38 ) (58 ) (217 ) Recoveries 5 10 17 25 57 Provisions 615 297 843 572 26 $ 381 2,734 Ending balance $ 1,206 $ 379 $ 2,963 $ 1,340 $ 37 $ 381 $ 6,306 The allocation of the allowance for loan losses and the related loans by major classifications of loans at December 31, 2018 and December 31, 2017 is summarized as follows: Real Estate December 31, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Ending balance $ 1,162 $ 404 $ 3,298 $ 1,286 $ 50 $ 148 $ 6,348 Ending balance: individually evaluated for impairment 382 78 28 488 Ending balance: collectively evaluated for impairment 780 404 3,220 1,258 50 148 5,860 Ending balance: purchased credit impaired loans $ $ $ $ $ $ $ Loans receivable: Ending balance $ 122,919 $ 39,556 $ 497,597 $ 221,115 $ 11,997 $ $ 893,184 Ending balance: individually evaluated for impairment 1,249 1,643 2,146 5,038 Ending balance: collectively evaluated for impairment 121,521 39,556 492,779 218,468 11,997 884,321 Ending balance: purchased credit impaired loans $ 149 $ $ 3,175 $ 501 $ $ $ 3,825 Real Estate December 31, 2017 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Ending balance $ 1,206 $ 379 $ 2,963 $ 1,340 $ 37 $ 381 $ 6,306 Ending balance: individually evaluated for impairment 56 76 92 224 Ending balance: collectively evaluated for impairment 1,150 379 2,887 1,248 37 381 6,082 Ending balance: purchased credit impaired loans $ $ $ $ $ $ $ Loans receivable: Ending balance $ 140,116 $ 34,405 $ 526,230 $ 240,626 $ 14,594 $ $ 955,971 Ending balance: individually evaluated for impairment 777 2,988 2,482 6,247 Ending balance: collectively evaluated for impairment 138,824 34,405 516,300 237,089 14,594 941,212 Ending balance: purchased credit impaired loans $ 515 $ $ 6,942 $ 1,055 $ $ $ 8,512
Summary of Major Classification of Loans Summarized by Aggregate Pass Rating	The following tables present the major classification of loans summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company’s internal risk rating system at December 31, 2018 and 2017: December 31, 2018 Pass Special Mention Substandard Doubtful Total Commercial $ 109,609 $ 9,123 $ 4,187 $ $ 122,919 Real estate: Construction 39,265 291 39,556 Commercial 471,364 13,106 13,127 497,597 Residential 216,218 2,126 2,771 221,115 Consumer 11,997 11,997 Total $ 848,453 $ 24,355 $ 20,376 $ $ 893,184 December 31, 2017: Pass Special Mention Substandard Doubtful Total Commercial $ 126,506 $ 9,372 $ 4,238 $ $ 140,116 Real estate: Construction 32,840 1,442 123 34,405 Commercial 497,852 15,305 13,073 526,230 Residential 234,808 2,214 3,604 240,626 Consumer 14,474 120 14,594 Total $ 906,480 $ 28,453 $ 21,038 $ $ 955,971
Summary of Classes of Loan Portfolio Summarized by Aging Categories of Performing Loans and Nonaccrual Loans	The following tables present the classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans as of December 31, 2018 and 2017. PCI loans are excluded from the aging and nonaccrual loan schedules. Accrual Loans December 31, 2018 30-59 Days Past Due 60-89 Days Past Due 90 or More Days Past Due Total Past Due Current Nonaccrual Loans Total Loans Commercial $ 69 $ 128 $ 82 $ 279 $ 121,350 $ 1,141 $ 122,770 Real estate: Construction 11 655 247 913 38,643 39,556 Commercial 467 538 170 1,175 492,545 702 494,422 Residential 4,537 1,322 290 6,149 213,579 886 220,614 Consumer 124 57 50 231 11,766 11,997 Total $ 5,208 $ 2,700 $ 839 $ 8,747 $ 877,883 $ 2,729 $ 889,359 Purchased credit impaired loans 3,825 Total Loans $ 893,184 Accrual Loans December 31, 2017 30-59 Days Past Due 60-89 Days Past Due 90 or More Days Past Due Total Past Due Current Nonaccrual Loans Total Loans Commercial $ 1,829 $ 85 $ 1,914 $ 137,612 $ 75 $ 139,601 Real estate: Construction 8 8 34,397 34,405 Commercial 2,213 152 $ 150 2,515 516,410 363 519,288 Residential 2,110 551 533 3,194 235,070 1,307 239,571 Consumer 149 60 9 218 14,376 14,594 Total $ 6,309 $ 848 $ 692 $ 7,849 $ 937,865 $ 1,745 $ 947,459 Purchased credit impaired loans 8,512 Total Loans $ 955,971
Schedule of Information Concerning Impaired Loans	The following tables summarize information concerning impaired loans as of and for the years ended December 31, 2018 and 2017, by major loan classification: For the Year Ended December 31, 2018 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance: Commercial $ 149 $ 149 $ 459 $ 564 Real estate: Construction Commercial 4,284 4,284 6,382 2,846 Residential 2,466 2,466 2,875 460 Consumer Total 6,899 6,899 9,716 3,870 With an allowance recorded: Commercial 1,249 1,249 $ 382 1,117 7 Real estate: Construction Commercial 534 534 78 676 17 Residential 181 319 28 184 3 Consumer Total 1,964 2,102 488 1,977 27 Commercial 1,398 1,398 382 1,576 571 Real estate: Construction Commercial 4,818 4,818 78 7,058 2,863 Residential 2,647 2,785 28 3,059 463 Consumer Total $ 8,863 $ 9,001 $ 488 $ 11,693 $ 3,897 For the Year Ended December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance: Commercial $ 1,107 $ 1,107 $ 1,210 $ 77 Real estate: Construction Commercial 9,399 9,399 10,164 340 Residential 3,197 3,215 2,896 149 Consumer Total 13,703 13,721 14,270 566 With an allowance recorded: Commercial 185 185 $ 56 186 1 Real estate: Construction Commercial 531 531 76 532 23 Residential 340 478 92 339 12 Consumer Total 1,056 1,194 224 1,057 36 Commercial 1,292 1,292 56 1,396 78 Real estate: Construction Commercial 9,930 9,930 76 10,696 363 Residential 3,537 3,693 92 3,235 161 Consumer Total $ 14,759 $ 14,915 $ 224 $ 15,327 $ 602
Schedule of Number of Loans and Recorded Investment in Troubled Debt Restructurings	The following tables present the number of loans and recorded investment in loans restructured and identified as troubled debt restructurings for the year ended December 31, 2017. Defaulted loans are those which are 30 days or more past due for payment under the modified terms. December 31, 2017 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Recorded Investment Troubled Debt Restructurings: Residential real estate 2 $ 196 $ 173 $ 128
Summary of Unpaid Principal Balances and Related Carrying Amounts of Union Acquired Loans	December 31, 2018 December 31, 2017 Credit impaired purchased loans evaluated individually for incurred credit losses: Outstanding balance $ 7,491 $ 16,803 Carrying Amount 3,825 8,512 Other purchased loans evaluated collectively for incurred credit losses: Outstanding balance 315,013 421,620 Carrying Amount 314,328 418,146 Total Purchased Loans: Outstanding balance 322,504 438,423 Carrying Amount $ 318,153 $ 426,658
Summary of Changes in Accretable Discount Related to Purchased Credit Impaired Loans	As of the indicated dates, the changes in the accretable discount related to the purchased credit impaired loans were as follows: Year Ended December 31, 2018 2017 Balance - beginning of period $ 2,129 $ 370 Additions 2,056 Accretion recognized during the period (3,791 ) (297 ) Net reclassification from non-accretable to accretable 2,241 Balance - end of period $ 579 $ 2,129

Off-balance sheet financial i_2

Off-balance sheet financial instruments (Tables)	12 Months Ended
	Dec. 31, 2018
Text Block [Abstract]
Schedule of Contractual Amounts of Off-Balance Sheet Commitments	The contractual amounts of off-balance sheet commitments at December 31, 2018 and 2017 are summarized as follows: December 31, 2018 2017 Commitments to extend credit $ 96,431 $ 52,706 Unused portions of lines of credit 59,512 72,157 Standby letters of credit 5,789 4,871 $ 161,732 $ 129,734

Premises and equipment, net (Ta

Premises and equipment, net (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Schedule of Premises and Equipment	Premises and equipment at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Land $ 4,361 $ 4,561 Premises and leasehold improvements 15,261 14,303 Furniture, fixtures and equipment 6,073 6,054 25,695 24,918 Less: accumulated depreciation 7,487 6,287 $ 18,208 $ 18,631
Schedule of Future Minimum Annual Rent Commitments under Various Operating Leases	Pursuant to the terms of non-cancelable lease agreements in effect at December 31, 2018, pertaining to banking premises and equipment, future minimum annual rent commitments under various operating leases are summarized as follows: 2019 $ 536 2020 505 2021 443 2022 360 2023 219 Thereafter $ 582 $ 2,645

Intangible assets, net (Tables)

Intangible assets, net (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Gross Carrying Amount and Accumulated Amortization Related to Intangible Assets	The gross carrying amount and accumulated amortization related to intangible assets at December 31, 2018 and 2017 are presented below: 2018 2017 December 31 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Core deposit intangibles $ 4,558 $ 1,667 $ 4,558 $ 968 Customer list intangible 1,082 541 1,164 475 Non-compete intangible 39 39 Trade name intangibles 102 25 102 5 Total intangible assets $ 5,742 $ 2,233 $ 5,863 $ 1,487
Estimation of Amortization Expense	Riverview estimates the amortization expense for amortizable intangibles as follows: 2019 $ 773 2020 676 2021 581 2022 479 2023 370 Thereafter 630 $ 3,509

Other assets (Tables)

Other assets (Tables)	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Components of Other Assets	The components of other assets at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Other real estate owned $ 721 $ 236 Bank owned life insurance 29,862 29,065 Restricted equity securities 1,054 1,306 Deferred tax assets 5,884 7,949 Other assets 4,635 5,147 Total $ 42,156 $ 43,703

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Components of Interest-Bearing and Noninterest-Bearing Deposits	The major components of interest-bearing and noninterest-bearing deposits at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Interest-bearing deposits: Money market accounts $ 113,220 $ 135,747 Now accounts 286,082 238,609 Savings accounts 128,762 189,044 Time deposits 313,955 307,185 Total interest-bearing deposits 842,019 870,585 Noninterest-bearing deposits 162,574 155,895 Total deposits $ 1,004,593 $ 1,026,480
Schedule of Aggregate Amounts of Maturities for all Time Deposits	The aggregate amounts of maturities for all time deposits at December 31, 2018, are summarized as follows: 2019 $ 106,488 2020 78,909 2021 58,023 2022 41,203 2023 21,623 Thereafter 7,709 $ 313,955

Short-term borrowings (Tables)

Short-term borrowings (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Summary of Short-term Borrowings	Short-term borrowings consisting of FHLB-Pgh and ACBB generally represent overnight or less than 30-day borrowings at December 31, 2018 and 2017 are summarized as follows: At and for the year ended December 31, 2018 Weighted Weighted Maximum Average Average Ending Average Month-End Rate for Rate at End Balance Balance Balance the Year of the Year FHLB-Pgh Open Repo Plus advances $ $ 1,693 $ 17,100 1.65 % ACBB advances 106 3,394 1.89 % Total $ $ 1,799 $ 20,494 1.67 % At and for the year ended December 31, 2017 Weighted Weighted Maximum Average Average Ending Average Month-End Rate for Rate at End Balance Balance Balance the Year of the Year FHLB-Pgh Open Repo Plus advances $ 6,000 $ 18,957 $ 43,000 1.20 % 1.54 % ACBB advances 149 1.34 Total $ 6,000 $ 19,106 $ 43,000 1.20 % 1.54 %

Long-term debt (Tables)

Long-term debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Advances	Long-term debt consisting of the following advances at December 31, 2018 and 2017 are as follows: Interest Rate Loan Type Due Fixed Adjustable 2018 2017 Unsecured term loan March 3, 2031 4.25 % $ 1,823 Unsecured non-revolving line March 3, 2031 4.25 % 318 March 3, 2031 4.25 % 1,818 April 3, 2031 4.25 % 1,874 June 3, 2032 4.50 % 582 Subordinated debt September 17, 2033 5.74 % $ 4,195 4,164 September 15, 2035 4.33 % 2,697 2,654 $ 6,892 $ 13,233
Scheduled Contractual Maturities of Borrowings	Maturities of long-term debt, by contractual maturity, in years subsequent to December 31, 2018 are as follows: 2019 2020 2021 2022 2023 Thereafter $ 6,892 $ 6,892

Fair value of financial instr_2

Fair value of financial instruments (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis at December 31, 2018 and 2017 are summarized as follows: Fair Value Measurement Using December 31, 2018 Amount Quoted Prices in Significant Significant State and Municipals: Taxable $ 33,278 $ 33,278 Tax-exempt 12,776 12,776 Mortgage-backed securities: U.S. Government agencies 23,670 23,670 U.S. Government-sponsored enterprises 26,195 26,195 Corporate debt obligations 8,758 8,758 Total $ 104,677 $ $ 104,677 Fair Value Measurement Using December 31, 2017 Amount Quoted Prices in Significant Significant State and Municipals: Taxable $ 35,002 $ 35,002 Tax-exempt 16,308 16,308 Mortgage-backed securities: U.S. Government agencies 22,817 22,817 U.S. Government-sponsored enterprises 10,089 10,089 Corporate debt obligations 8,985 8,985 Total $ 93,201 $ $ 93,201
Summary of Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis	Assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2018 and 2017 are summarized as follows: Fair Value Measurement Using December 31, 2018 Amount (Level 1) (Level 2) (Level 3) Other real estate owned $ 721 $ 721 Impaired loans, net of related allowance 1,476 1,476 Total $ 2,197 $ 2,197 Fair Value Measurement Using December 31, 2017 Amount (Level 1) (Level 2) (Level 3) Other real estate owned $ 236 $ 236 Impaired loans, net of related allowance 832 832 Total $ 1,068 $ 1,068
Additional Quantitative Information about Assets Measured at Fair Value on Nonrecurring Basis	The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Quantitative Information about Level 3 Fair Value Measurements December 31, 2018 Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) Other real estate owned $ 721 Appraisal of collateral Appraisal adjustments 0.0 69.0 28.4 Liquidation expenses 0.0 7.0 7.0 Impaired loans $ 1,476 Appraisal of collateral Appraisal adjustments 0.0 0.0 0.0 Liquidation expenses 7.0 25.0 10.3 Quantitative Information about Level 3 Fair Value Measurements December 31 , 2017 Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) Other real estate owned $ 236 Appraisal of collateral Appraisal adjustments 0.0% to 69.0% (39.0)% Liquidation expenses 0.0% to 7.0% (7.0)% Impaired loans $ 832 Appraisal of collateral Appraisal adjustments 0.0% to 0.0% (0.0)% Liquidation expenses 0.0% to 7.0% (7.0)%
Carrying and Fair Values of Riverview's Financial Instruments	Fair Value Hierarchy December 31, 2018 Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 53,816 $ 53,816 $ 53,816 Investment securities available-for-sale 104,677 104,677 $ 104,677 Loans held for sale 637 637 637 Net loans 886,836 872,455 $ 872,455 Accrued interest receivable 3,010 3,010 663 2,347 Restricted equity securities 1,054 1,054 1,054 Financial liabilities: Deposits $ 1,004,593 $ 999,929 $ 999,929 Long-term borrowings 6,892 6,892 6,892 Accrued interest payable 484 484 484 Fair Value Hierarchy December 31, 2017 Carrying Amount Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 25,786 $ 25,786 $ 25,786 Investment securities available-for-sale 93,201 93,201 $ 93,201 Loans held for sale 254 254 254 Net loans 949,665 954,876 $ 954,876 Accrued interest receivable 3,237 3,237 640 2,597 Restricted equity securities 1,306 1,306 1,306 Financial liabilities: Deposits $ 1,026,480 $ 1,022,068 $ 1,022,068 Short-term borrowings 6,000 6,000 6,000 Long-term borrowings 13,233 14,634 14,634 Accrued interest payable 468 468 468

Revenue recognition (Tables)

Revenue recognition (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Summary of Noninterest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606	The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the years ended December 31, 2018 and 2017. Year Ended December 31 2018 2017 Noninterest Income: In-scope of Topic 606: Service charges, fees and commissions $ 5,697 $ 2,037 Trust and asset management 1,726 1,176 Noninterest income (in-scope of Topic 606) 7,423 3,213 Noninterest income (out-of-scope of Topic 606) 1,457 1,198 Total noninterest income $ 8,880 $ 4,411

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Postemployment Benefits [Abstract]
Summary of Stock Option Activity	The following table summarizes the stock option activity for the years ended December 31, 2018 and 2017: 2018 2017 Option Grants Weighted Average Exercise Price Option Grants Weighted Average Exercise Price Outstanding – January 1, 2018 298,246 $ 10.56 321,079 $ 10.47 Granted 6,500 12.88 20,000 11.94 Forfeited (5,750 ) 10.60 (4,000 ) 10.00 Exercised (35,516 ) 10.57 (38,833 ) 10.59 Outstanding – December 31, 2018 263,480 $ 10.62 298,246 $ 10.56 Options vested and exercisable at year-end 256,980 298,246 Range of exercise price $ 9.75 - $13.05 $ 9.75 - $13.05 Remaining contractual life 4.06 years 4.72 years
Schedule of Weighted Average Assumptions of Fair Value of Option Granted	The fair value of options granted during 2018 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions. Option Grants Option Grants March 16, 2018 June 26, 2018 Number of options 5,000 1,500 Fair value per share $ 2.01 $ 1.39 Dividend yield 4.24 % 3.28 % Expected life 8.5 years 8.5 years Expected volatility 23.26 % 14.02 % Risk-free interest rate 2.78 % 2.83 %
Schedule of Plan's Funded Status	The following table presents the plans’ funded status and the amounts recognized in the Company’s consolidated financial statements for 2018 and 2017. The measurement date, for purposes of these valuations, was December 31, 2018 and 2017. Benefit Plans 2018 2017 Obligations and funded status: Change in benefit obligations: Benefit obligation beginning January 1, $ 8,403 $ 8,002 Interest cost 291 322 Benefits paid (546 ) (535 ) Assumption of CBT obligation 154 Change due to plan amendment (95 ) Actuarial (gain)/loss (479 ) 555 Benefit obligation at end of year 7,669 8,403 Change in plan assets: Fair value of plan assets at January 1, 7,191 6,723 Adjustment to asset value at January 1 Actual return on plan assets (349 ) 807 Contributions 8 193 Benefits paid (540 ) (532 ) Fair value of plan assets at end of year 6,310 7,191 Funded status included in other liabilities $ (1,359 ) $ (1,212 )
Schedule of Amounts Related to Plan Recognized in Accumulated Other Comprehensive Loss but not Yet Recognized as Component of Net Periodic Pension Cost	Amounts related to the plan that have been recognized in accumulated other comprehensive loss but not yet recognized as a component of net periodic pension cost are as follows for the years ended December 31: Benefit Plans 2018 2017 Net gain (loss) $ (1,132 ) $ (869 ) Income tax expense (benefit) (238 ) (183 ) Net amount recognized in other comprehensive income (loss) $ (894 ) $ (686 )
Schedule of Net Periodic Pension Expense and Postretirement Benefit Cost	Pension Benefits 2018 2017 Interest cost $ 291 $ 322 Expected return on plan assets (486 ) (456 ) Amortization of net loss 81 49 Net periodic pension cost (credit) $ (114 ) $ (85 ) Postretirement Life Insurance Benefits 2018 2017 Service cost $ $ 1 Interest cost 2 1 Net periodic postretirement benefit cost (credit) $ 2 $ 2
Summary of Actuarial Assumptions Used for Company's Pension and Postretirement Benefit Plan	The accumulated benefit obligation was $7,669 at December 31, 2018 and $8,403 at December 31, 2017 for the pension benefit and postretirement benefit plans. Pension Benefits Postretirement Life Union Citizens Insurance Benefits 2018 2017 2018 2017 2018 2017 Discount rate 3.60 % 4.14 % 3.60 % 4.14 % 4.25 % 3.75 % Expected long-term rate of return on plan assets 7.00 % 7.00 % 7.00 % 7.00 %
Schedule of Expected Benefit Payments	Pension Benefits Postretirement Life Insurance Benefits 2019 $ 528 $ 5 2020 522 5 2021 513 5 2022 513 4 2023 502 4 2024 – 2028 2,362 16 Total $ 4,940 $ 39
Schedule of Company's Pension Plan Asset Allocations, by Asset Category	The Company’s pension plan asset allocations as of the year ends, by asset category, are as follows: Pension Benefits 2018 2017 Cash and cash equivalents 0.70 % 0.76 % Equity 34.53 40.19 Fixed income 64.77 59.05 Total 100.00 % 100.00 %
Schedule of Fair Value of Company's Pension Plan Assets, by Asset Category	The fair value of the pension plan assets at December 31, 2018 and 2017 by asset category are as follows: 2018 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and cash equivalents $ 44 $ 44 Mutual fund – equity: Large-cap value 233 233 Large-cap core 237 237 Mid-cap core 261 261 Small-cap core 115 115 International growth 461 461 Large cap growth 485 485 Small / midcap growth 141 141 Mutual funds/ETFs – fixed income: Fixed income – core plus 1,443 1,443 Intermediate duration 483 483 Long duration – Government credit 1,555 1,555 Long U.S. Treasury ETF 606 606 Common /collective trusts – equity: Large cap value 246 $ 246 Total assets $ 6,310 $ 6,064 $ 246 2017 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and cash equivalents $ 55 $ 55 Mutual fund – equity: Large-cap value 297 297 Large-cap core 302 302 Mid-cap core 348 348 Small-cap core 166 166 International growth 656 656 Large cap growth 634 634 Small / midcap growth 184 184 Mutual funds/ETFs – fixed income: Fixed income – core plus 1,483 1,483 Intermediate duration 501 501 Long duration – Government credit 1,632 1,632 Long U.S. Treasury ETF 630 630 Common /collective trusts – equity: Large cap value 303 $ 303 Total assets $ 7,191 $ 6,888 $ 303

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Summary of Current and Deferred Amounts of Provision for Income Taxes Expense (Benefit)	The current and deferred amounts of the provision for income taxes expense (benefit) for each of the years ended December 31, 2018 and 2017 are summarized as follows: Year Ended December 31 2018 2017 Current $ 31 $ Deferred 2,340 3,501 $ 2.371 $ 3,501
Components of Net Deferred Tax Asset	The components of the net deferred tax asset at December 31, 2018 and 2017 are summarized as follows: December 31 2018 2017 Deferred tax assets: Allowance for loan losses $ 1,121 $ 991 Deferred compensation 1,007 949 Purchase accounting adjustments 827 1,863 Alternate minimum tax credit carryforwards 608 608 Benefit plans 238 183 Accrued expenses 242 231 Unrealized loss on investment securities available-for-sale 458 238 Low income housing credit carryforwards 1,063 1,063 Net operating loss carryforwards 761 1,827 Other 133 571 Total 6,458 8,524 Deferred tax liabilities: Premises and equipment, net (574 ) (575 ) Total (574 ) (575 ) Net deferred tax asset $ 5,884 $ 7,949
Reconciliation Between Amount of Effective Income Tax Expense and Income Tax Expense	A reconciliation between the amount of the effective income tax expense and the income tax expense that would have been provided at the federal statutory rate of 21.0 percent for the year ended December 31, 2018 and 34.0 percent for the year ended December 31, 2017 is summarized as follows: Year Ended December 31 2018 2017 Federal income tax at statutory rate $ 2,778 $ (479 ) Tax exempt interest (248 ) (282 ) Bank owned life insurance income (163 ) (153 ) Tax Cuts and Jobs Act legislation 3,888 Disallowed merger related costs 225 Other, net 4 302 Total $ 2,371 $ 3,501

Parent company financial stat_2

Parent company financial statements (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	Condensed Balance Sheets December 31 2018 2017 Assets Cash and cash equivalents $ 249 $ 426 Investment in bank subsidiary 120,607 119,297 Premises, net 73 73 Other assets 336 201 $ 121,265 $ 119,997 Liabilities and stockholders’ equity Long-term borrowings $ 6,892 $ 13,233 Other liabilities 463 508 Total Liabilities 7,355 13,741 Stockholders’ equity 113,910 106,256 $ 121,265 $ 119,997
Condensed Statements of Income and Comprehensive Income	Condensed Statements of Income and Comprehensive Income December 31 2018 2017 Income, dividends from bank subsidiary $ 9,229 $ 2,090 Interest expense 747 379 Income before equity in undistributed net income of subsidiary 8,482 1,711 Undistributed net income (loss) of subsidiary 2,350 (7,019 ) Noninterest expense 164 21 Net income (loss) before income taxes $ 10,668 $ (5,329 ) Income tax benefit (190 ) (418 ) Net income (loss) $ 10,858 $ (4,911 ) Total comprehensive income (loss) $ 9,818 $ (4,034 )
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Year Ended December 31 2018 2017 Cash flows from operating activities: Net income (loss) $ 10,858 $ (4,911 ) Adjustments to reconcile net income to net cash provided by operating activities: Option expense 9 203 Undistributed net (income) loss of subsidiary (2,350 ) 7,019 Increase in accrued interest receivable and other assets (135 ) (124 ) Decrease in accrued interest payable and other liabilities (45 ) (556 ) Net cash provided by operating activities 8,337 1,631 Cash flows from investing activities: Capitalization of subsidiary (15,500 ) Cash consideration for business acquisition (1 ) Net cash used in investing activities (15,501 ) Cash flows from financing activities: Proceeds from long-term debt 600 Repayment of long-term borrowings (6,341 ) (338 ) Proceeds from exercise of options 41 411 Proceeds from issuance of common stock 517 16,856 Dividends paid (2,731 ) (3,257 ) Net cash provided by(used in) financing activities (8,514 ) 14,272 Increase (decrease) in cash and cash equivalents (177 ) 402 Cash and cash equivalents - beginning 426 24 Cash and cash equivalents - ending $ 249 $ 426

Regulatory matters (Tables)

Regulatory matters (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Schedule of the Company's and Bank's Capital Ratios and Minimum Ratios Required for Capital Adequacy Purposes	The Bank’s capital ratios and the minimum ratios required for capital adequacy purposes and to be considered well capitalized under the prompt corrective action provisions are summarized below for the year ended December 31, 2018: Actual Minimum Regulatory Capital Ratios under Basel III (with 1.875% capital conservation buffer phase-in) Well Capitalized under Basel III December 31, 2018: Amount Ratio Amount Ratio Amount Ratio Total risk-based capital (to risk-weighted assets: Riverview Bank $ 100,001 11.4 % $ 86,443 ³ 9.875 % $ 87,538 ³ 10.0 % Tier 1 capital (to risk-weighted assets): Riverview Bank 93,580 10.7 68,936 ³ 7.875 70,030 ³ 8.0 Tier 1 capital (to average total assets): Riverview Bank 93,580 8.4 44,733 ³ 4.00 55,916 ³ 5.0 Common equity tier 1 risk-based capital (to risk-weighted assets): Riverview Bank 93,580 10.7 55,805 ³ 6.375 56,900 ³ 6.5 The Bank’s capital ratios and minimum ratios required for capital adequacy purposes and to be considered well capitalized under prompt corrective action provisions are summarized below for the year ended December 31, 2017: Actual Minimum Regulatory Capital Ratios under Basel III (with 1.25% capital conservation buffer phase-in) Well Capitalized under Basel III December 31, 2017: Amount Ratio Amount Ratio Amount Ratio Total risk-based capital (to risk-weighted assets): Riverview Bank $ 96,926 10.4 % $ 85,963 ³ 9.25 % $ 92,933 ³ 10.0 % Tier 1 capital (to risk-weighted assets): Riverview Bank 90,553 9.7 67,376 ³ 7.25 74,346 ³ 8.0 Tier 1 capital (to average total assets): Riverview Bank 90,553 7.9 45,583 ³ 4.00 56,978 ³ 5.0 Common equity tier 1 risk-based capital (to risk-weighted assets): Riverview Bank 90,553 9.7 53,437 ³ 5.75 60,407 ³ 6.5

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail) $ / shares in Units, $ in Thousands	Oct. 01, 2017	Jun. 22, 2017	Jan. 20, 2017USD ($)$ / sharesshares	Dec. 31, 2017USD ($)$ / shares	Dec. 31, 2018USD ($)Office$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares	Jan. 01, 2019USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of full service offices | Office					28
Number of limited purpose offices | Office					4
Finite lived intangibles useful lives					10 years
Impairment losses recognized during period					$ 0
Advertising costs					$ 647	$ 456
Federal income taxes at the statutory rate					21.00%	34.00%
Tax cuts and jobs act of 2017 change in tax rate income tax benefit				$ 3,888
Antidilutive securities excluded from calculation of diluted number of shares | shares					43,350	298,246
Common stock, no par value | $ / shares
Shares issued | shares					269,885
Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Recognize right-of-use assets and related lease liabilities							$ 3,719
Series A Preferred Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Series A preferred stock converted into non voting common stock		1
Private Placement [Member]
Summary Of Significant Accounting Policies [Line Items]
Sale of common and preferred equity			$ 17,000
Common stock, no par value | $ / shares
Customer List Intangible [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite lived intangibles useful lives					10 years
Common Stock [Member] | Private Placement [Member]
Summary Of Significant Accounting Policies [Line Items]
Shares issued | shares			269,885
Stock price per share | $ / shares			$ 10.50
Convertible Perpetual Stock [Member] | Private Placement [Member]
Summary Of Significant Accounting Policies [Line Items]
Shares issued | shares			1,348,809
Stock price per share | $ / shares			$ 10.50
Residential Mortgages [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortization period for loans					30 years
CBT Financial Corp [Member]
Summary Of Significant Accounting Policies [Line Items]
Business combination agreement date	Apr. 19, 2017
Business combination effective date	Oct. 1, 2017
Scenario, Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Federal income taxes at the statutory rate					21.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Commercial real estate loan to value percentage					80.00%
Federal income taxes at the statutory rate						35.00%
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt service coverage ratios					1.20%

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Related Assets and Leasehold Improvements (Detail)	12 Months Ended
	Dec. 31, 2018
Minimum [Member] | Premises and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	P7Y
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	P10Y
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	P3Y
Maximum [Member] | Premises and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	P50Y
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	P30Y
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	P10Y

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Summary of Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)	$ (277)	$ 451
Net of income taxes	(1,040)	877
Accumulated other comprehensive loss	(2,619)	(1,579)
Unrealized Losses on Available-for-Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Benefit plan adjustments	(2,183)	(1,131)
Income tax expense (benefit)	(458)	(238)
Net of income taxes	(1,725)	(893)
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Benefit plan adjustments	(1,132)	(869)
Income tax expense (benefit)	(238)	(183)
Net of income taxes	$ (894)	$ (686)

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Schedule of Other Comprehensive Income (Loss) and Related Tax Effects (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other Comprehensive Income (Loss), Tax [Abstract]
Unrealized gain (loss) on investment securities available-for-sale	$ (1,012)	$ 1,471
Net (gain) loss on the sale of investment securities available-for-sale	(40)	(89)
Benefit plans:
Amortization of actuarial loss (gain)	81	49
Actuarial (loss) gain	(346)	(103)
Net change in benefit plan liabilities	(265)	(54)
Other comprehensive income (loss) gain before taxes	(1,317)	1,328
Income tax expense (benefit)	(277)	451
Other comprehensive income (loss)	$ (1,040)	$ 877

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Computation of Earnings per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net income (loss)	$ 10,858	$ (4,911)
Dividends on preferred stock		(371)
Net income (loss) available to common stockholders	10,858	(5,282)
Undistributed income (loss) allocated to preferred stockholders		475
Income (loss) allocated to common stockholders	$ 10,858	$ (4,807)
Denominator:
Basic	9,096,142	5,260,537
Dilutive options	52,155
Diluted	9,148,297	5,260,537
Basic	$ 1.19	$ (0.91)
Diluted	$ 1.19	$ (0.91)

Merger Accounting - Additional

Merger Accounting - Additional Information (Detail) $ / shares in Units, $ in Thousands	Oct. 01, 2017USD ($)	Sep. 29, 2017$ / shares	Dec. 31, 2018USD ($)$ / shares	Dec. 31, 2017USD ($)
Business Acquisition [Line Items]
Fair market value of Riverview common share | $ / shares		$ 13.20	$ 13.20
Goodwill			$ 24,754	$ 24,754
Goodwill, deductible for tax purposes			0
Business combination loans acquired			$ 893,184	955,971
Finite lived intangibles useful lives			10 years
CBT Financial Corp [Member]
Business Acquisition [Line Items]
Exchange ratio	2.86
Business combination effective date	Oct. 1, 2017
Business combination agreement date	Apr. 19, 2017
Percentage of shares held by the acquiree shareholders	45.80%
Goodwill	$ 19,675		$ 19,675
Fair value of assets acquired			$ 393,821
Business combination loans acquired	$ 373,868
Revenue				$ 6,724
CBT Financial Corp [Member] | Minimum [Member]
Business Acquisition [Line Items]
Percentage of assets and tangible equity contributed in merger	50.00%

Merger Accounting - Schedule of

Merger Accounting - Schedule of Calculation of Goodwill (Detail) $ / shares in Units, $ in Thousands	Sep. 29, 2017$ / shares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)shares	Oct. 01, 2017USD ($)
Business Acquisition [Line Items]
Shares outstanding | shares		9,121,555	9,069,363
Riverview shares issued | shares		9,121,555	9,069,363
Value assigned to Riverview shares | $ / shares	$ 13.20	$ 13.20
Purchase price		$ 54,568
Purchase price consideration for fractional shares		1
Net Assets Acquired:
Goodwill resulting from merger		$ 24,754	$ 24,754
CBT Bank [Member]
Business Acquisition [Line Items]
Shares outstanding | shares		1,445,474
Riverview Bank [Member]
Business Acquisition [Line Items]
Exchange ratio		2.86
Riverview shares issued | shares		4,134,056
Less: fractional shares issued to CBT shareholders | shares		111
Riverview shares issued to CBT shareholders | $ / shares		$ 4,133,945
CBT Financial Corp [Member]
Business Acquisition [Line Items]
Exchange ratio				2.86
Total Purchase Price		$ 54,569
Net Assets Acquired:
Cash and due from banks		32,022
Investment securities available-for-sale		43,869
Loans, net		382,461		$ 382,461
Accrued interest receivable		894
Premises and equipment		6,143
Other assets		21,730
Deposits		(438,845)
Long-term debt		(6,801)
Accrued interest payable		(256)
Other liabilities		(6,323)
Net assets acquired		34,894
Goodwill resulting from merger		$ 19,675		$ 19,675

Merger Accounting - Fair Value

Merger Accounting - Fair Value Adjustments Made to Amortized Cost Basis in Order to Present a Fair Value of the Loans Acquired (Detail) - CBT Financial Corp [Member] - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2018
Gross amortized cost basis at October 1, 2017	$ 393,821
Interest rate fair value adjustment on pools of homogeneous loans	2,356
Fair value of acquired loans at October 1, 2017	382,461	$ 382,461
Homogeneous Loan Pools [Member]
Credit fair value adjustment on pools of homogeneous loans	(5,627)
Purchased Credit Impaired Loans [Member]
Credit and interest fair value adjustment on purchased credit impaired loans	$ (8,089)

Merger Accounting - Summary of

Merger Accounting - Summary of Loans Purchased (Detail) - CBT Financial Corp [Member] - Purchased Credit Impaired Loans [Member] $ in Thousands	Oct. 01, 2017USD ($)
Contractually required principal and interest at acquisition	$ 16,682
Contractual cash flows not expected to be collected (nonaccretable discount)	(6,033)
Expected cash flows at acquisition	10,649
Interest component of expected cash flows (accretable discount)	(2,056)
Fair value of acquired loans	$ 8,593

Merger Accounting - Summary o_2

Merger Accounting - Summary of Merger Related Costs Included in Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Salaries and benefits	$ 22,064	$ 15,196
CBT Financial Corp [Member]
Accounting		119
Legal and consulting	49	623
Salaries and benefits	220	1,779
Equipment disposition and contract termination	3	634
System conversion/deconversion costs	71	368
Other	210	151
Total	$ 553	$ 3,674

Merger Accounting - Merger Prof

Merger Accounting - Merger Proforma Information (Detail) - CBT Financial Corp [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)$ / shares
Net interest income after loan loss provision	$ 36,187
Noninterest income	7,871
Noninterest expense	39,092
Net income	$ 4,966
Net income per share | $ / shares	$ 0.95

Cash and Due from Banks - Addit

Cash and Due from Banks - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Average reserve balances required with Federal Reserve Bank	$ 0	$ 12,336

Investment Securities - Schedul

Investment Securities - Schedule of Amortized Cost and Fair Value of Investment Securities Available-for-Sale Aggregated by Investment Category (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 106,860	$ 94,332
Gross Unrealized Gains	219	403
Gross Unrealized Losses	2,402	1,534
Fair Value	104,677	93,201
Taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	34,025	35,352
Gross Unrealized Gains	145	334
Gross Unrealized Losses	892	684
Fair Value	33,278	35,002
Tax-Exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,970	16,325
Gross Unrealized Gains	2	47
Gross Unrealized Losses	196	64
Fair Value	12,776	16,308
Mortgage-Backed Securities - U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	23,715	22,908
Gross Unrealized Gains	61	3
Gross Unrealized Losses	106	94
Fair Value	23,670	22,817
Mortgage-backed Securities - U.S. Government-sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	26,635	10,218
Gross Unrealized Gains	11	19
Gross Unrealized Losses	451	148
Fair Value	26,195	10,089
Corporate Debt Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,515	9,529
Gross Unrealized Losses	757	544
Fair Value	$ 8,758	$ 8,985

Investment Securities - Additio

Investment Securities - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)Securities	Dec. 31, 2017USD ($)Securities
Schedule of Available-for-sale Securities [Line Items]
Net unrealized loss, net of tax | $	$ (1,725)	$ (893)
Deferred income taxes on unrealized gain (loss) | $	458	238
Proceeds from sales of investment securities available-for-sale | $	4,825	18,952
Available-for-sale securities sold, gross realized gains | $	40	166
Available-for-sale securities sold, gross realized losses | $		77
Tax provision related to net realized gains | $	8
Available-for-sale securities pledged as collateral, carrying value | $	$ 71,797	$ 93,201
Available-for-sale securities in unrealized loss position, number of securities	92	88
Taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in unrealized loss position, number of securities	39	34
Available-for-sale securities in unrealized loss position for twelve months or more, number of securities	35	25
Tax-exempt Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in unrealized loss position, number of securities	22	21
Available-for-sale securities in unrealized loss position for twelve months or more, number of securities	19
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in unrealized loss position, number of securities	27	29
Available-for-sale securities in unrealized loss position for twelve months or more, number of securities	13	5
Corporate Debt Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in unrealized loss position, number of securities	4	4
Available-for-sale securities in unrealized loss position for twelve months or more, number of securities	4	2

Investment Securities - Sched_2

Investment Securities - Schedule of Debt Securities Classified Available-for-Sale Maturity Distribution of Fair Value (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Within one year, Fair Value	$ 2,283
Available-for-sale securities, After one but within five years, Fair Value	4,702
Available-for-sale securities, After five but within ten years, Fair Value	13,959
Available-for-sale securities, After ten years, Fair Value	33,868
Available-for-sale securities, Single maturity, Fair Value	54,812
Total available-for-sale securities, Fair Value	104,677
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Without single maturity, Fair Value	$ 49,865

Investment Securities Available

Investment Securities Available-for-Sale - Schedule of Fair Value Gross Unrealized Losses of Investment Securities Unrealized Losses (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	$ 30,222	$ 40,103
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	265	404
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	49,606	29,737
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	2,137	1,130
Available-for-sale securities in a continuous loss position, Fair Value	79,828	69,840
Available-for-sale securities in a continuous loss position, Unrealized Losses	2,402	1,534
Taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	2,300	4,757
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	4	30
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	22,943	20,185
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	888	654
Available-for-sale securities in a continuous loss position, Fair Value	25,243	24,942
Available-for-sale securities in a continuous loss position, Unrealized Losses	892	684
Tax-Exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	1,950	10,506
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	32	64
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	9,556
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	164
Available-for-sale securities in a continuous loss position, Fair Value	11,506	10,506
Available-for-sale securities in a continuous loss position, Unrealized Losses	196	64
Mortgage-Backed Securities - U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	7,862	16,746
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	66	87
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	1,216	193
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	40	7
Available-for-sale securities in a continuous loss position, Fair Value	9,078	16,939
Available-for-sale securities in a continuous loss position, Unrealized Losses	106	94
Mortgage-backed Securities - U.S. Government-sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	18,110	4,294
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	163	23
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	7,133	4,174
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	288	125
Available-for-sale securities in a continuous loss position, Fair Value	25,243	8,468
Available-for-sale securities in a continuous loss position, Unrealized Losses	451	148
Corporate Debt Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value		3,800
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses		200
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	8,758	5,185
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	757	344
Available-for-sale securities in a continuous loss position, Fair Value	8,758	8,985
Available-for-sale securities in a continuous loss position, Unrealized Losses	$ 757	$ 544

Loans, Net and Allowance for _3

Loans, Net and Allowance for Loan Losses - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)ContractLoans	Dec. 31, 2017USD ($)ContractLoans	Oct. 01, 2017Loan	Dec. 31, 2015Loan	Nov. 01, 2013Loan
Financing Receivable, Impaired [Line Items]
Deferred loan fees, net	$ 1,026	$ 863
Loans outstanding to directors, executive officers, principal stockholders or to their affiliates	9,555	9,465
Advances and repayment	$ 1,096	$ 1,006
Number of related party loans classified as nonaccrual, past due, or restructured or considered a potential credit risk | Loans	0	0
Loans receivable, related parties, reclassified		$ 5,244
Loans receivable, related parties, additions		6,387
Interest income, related to impaired loans	$ 99	77
Troubled debt restructurings, amount	$ 2,925	$ 5,606
Troubled Debt Restructurings, Number of Contracts | Contract	14	19
Subsequently defaulted number of contracts | Contract	2	5
Financing receivable modifications subsequent default recorded investment	$ 759	$ 697
Union Bank [Member]
Financing Receivable, Impaired [Line Items]
Purchased credit impaired loans | Loan				10
Citizens National Bank of Meyersdale [Member]
Financing Receivable, Impaired [Line Items]
Purchased credit impaired loans | Loan					14
CBT Financial Corp [Member]
Financing Receivable, Impaired [Line Items]
Purchased credit impaired loans | Loan			37
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Troubled Debt Restructurings, Number of Contracts | Contract	0	2

Loans, Net and Allowance for _4

Loans, Net and Allowance for Loan Losses - Schedule of Loans Outstanding (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Commercial	$ 122,919	$ 140,116
Construction	39,556	34,405
Commercial	497,597	526,230
Residential	221,115	240,626
Consumer	11,997	14,594
Total	$ 893,184	$ 955,971

Loans, Net and Allowance for _5

Loans, Net and Allowance for Loan Losses - Schedule of Allowance for Loan Losses Account by Major Classification of Loan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	$ 6,306	$ 3,732
Allowance for Loan Losses, Charge-offs	(747)	(217)
Allowance for Loan Losses, Recoveries	174	57
Allowance for Loan Losses, Provision	615	2,734
Allowance for Loan Losses, Ending balance	6,348	6,306
Ending balance: individually evaluated for impairment	488	224
Ending balance: collectively evaluated for impairment	5,860	6,082
Ending balance: purchased credit impaired loans	0	0
Ending balance	893,184	955,971
Ending balance: individually evaluated for impairment	5,038	6,247
Ending balance: collectively evaluated for impairment	884,321	941,212
Ending balance: purchased credit impaired loans	3,825	8,512
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	1,206	629
Allowance for Loan Losses, Charge-offs	(206)	(43)
Allowance for Loan Losses, Recoveries	11	5
Allowance for Loan Losses, Provision	151	615
Allowance for Loan Losses, Ending balance	1,162	1,206
Ending balance: individually evaluated for impairment	382	56
Ending balance: collectively evaluated for impairment	780	1,150
Ending balance: purchased credit impaired loans	0	0
Ending balance	122,919	140,116
Ending balance: individually evaluated for impairment	1,249	777
Ending balance: collectively evaluated for impairment	121,521	138,824
Ending balance: purchased credit impaired loans	149	515
Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	379	160
Allowance for Loan Losses, Charge-offs		(78)
Allowance for Loan Losses, Provision	25	297
Allowance for Loan Losses, Ending balance	404	379
Ending balance: collectively evaluated for impairment	404	379
Ending balance: purchased credit impaired loans	0	0
Ending balance	39,556	34,405
Ending balance: collectively evaluated for impairment	39,556	34,405
Ending balance: purchased credit impaired loans	0	0
Real Estate Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	2,963	2,110
Allowance for Loan Losses, Recoveries	6	10
Allowance for Loan Losses, Provision	329	843
Allowance for Loan Losses, Ending balance	3,298	2,963
Ending balance: individually evaluated for impairment	78	76
Ending balance: collectively evaluated for impairment	3,220	2,887
Ending balance: purchased credit impaired loans	0	0
Ending balance	497,597	526,230
Ending balance: individually evaluated for impairment	1,643	2,988
Ending balance: collectively evaluated for impairment	492,779	516,300
Ending balance: purchased credit impaired loans	3,175	6,942
Real Estate Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	1,340	789
Allowance for Loan Losses, Charge-offs	(104)	(38)
Allowance for Loan Losses, Recoveries	31	17
Allowance for Loan Losses, Provision	19	572
Allowance for Loan Losses, Ending balance	1,286	1,340
Ending balance: individually evaluated for impairment	28	92
Ending balance: collectively evaluated for impairment	1,258	1,248
Ending balance: purchased credit impaired loans	0	0
Ending balance	221,115	240,626
Ending balance: individually evaluated for impairment	2,146	2,482
Ending balance: collectively evaluated for impairment	218,468	237,089
Ending balance: purchased credit impaired loans	501	1,055
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	37	44
Allowance for Loan Losses, Charge-offs	(437)	(58)
Allowance for Loan Losses, Recoveries	126	25
Allowance for Loan Losses, Provision	324	26
Allowance for Loan Losses, Ending balance	50	37
Ending balance: collectively evaluated for impairment	50	37
Ending balance: purchased credit impaired loans	0	0
Ending balance	11,997	14,594
Ending balance: collectively evaluated for impairment	11,997	14,594
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	381
Allowance for Loan Losses, Provision	(233)	381
Allowance for Loan Losses, Ending balance	148	381
Ending balance: collectively evaluated for impairment	148	381
Ending balance: purchased credit impaired loans	$ 0	$ 0

Loans, Net and Allowance for _6

Loans, Net and Allowance for Loan Losses - Summary of Major Classification of Loans Summarized by Aggregate Pass Rating (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 893,184	$ 955,971
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	122,919	140,116
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	39,556	34,405
Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	497,597	526,230
Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	221,115	240,626
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	11,997	14,594
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	848,453	906,480
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	109,609	126,506
Pass [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	39,265	32,840
Pass [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	471,364	497,852
Pass [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	216,218	234,808
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	11,997	14,474
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	24,355	28,453
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	9,123	9,372
Special Mention [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable		1,442
Special Mention [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	13,106	15,305
Special Mention [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	2,126	2,214
Special Mention [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable		120
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	20,376	21,038
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	4,187	4,238
Substandard [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	291	123
Substandard [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	13,127	13,073
Substandard [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 2,771	$ 3,604

Loans, Net and Allowance for _7

Loans, Net and Allowance for Loan Losses - Summary of Classes of Loan Portfolio Summarized by Aging Categories of Performing Loans and Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 893,184	$ 955,971
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	122,919	140,116
Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	39,556	34,405
Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	497,597	526,230
Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	221,115	240,626
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	11,997	14,594
Performing Loans and Non Accrual Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,747	7,849
Current	877,883	937,865
Nonaccrual Loans	2,729	1,745
Total	889,359	947,459
Performing Loans and Non Accrual Loans [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	279	1,914
Current	121,350	137,612
Nonaccrual Loans	1,141	75
Total	122,770	139,601
Performing Loans and Non Accrual Loans [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	913	8
Current	38,643	34,397
Total	39,556	34,405
Performing Loans and Non Accrual Loans [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,175	2,515
Current	492,545	516,410
Nonaccrual Loans	702	363
Total	494,422	519,288
Performing Loans and Non Accrual Loans [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,149	3,194
Current	213,579	235,070
Nonaccrual Loans	886	1,307
Total	220,614	239,571
Performing Loans and Non Accrual Loans [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	231	218
Current	11,766	14,376
Total	11,997	14,594
Performing Loans and Non Accrual Loans [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,208	6,309
Performing Loans and Non Accrual Loans [Member] | 30-59 Days Past Due [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	69	1,829
Performing Loans and Non Accrual Loans [Member] | 30-59 Days Past Due [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	11	8
Performing Loans and Non Accrual Loans [Member] | 30-59 Days Past Due [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	467	2,213
Performing Loans and Non Accrual Loans [Member] | 30-59 Days Past Due [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,537	2,110
Performing Loans and Non Accrual Loans [Member] | 30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	124	149
Performing Loans and Non Accrual Loans [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,700	848
Performing Loans and Non Accrual Loans [Member] | 60-89 Days Past Due [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	128	85
Performing Loans and Non Accrual Loans [Member] | 60-89 Days Past Due [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	655
Performing Loans and Non Accrual Loans [Member] | 60-89 Days Past Due [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	538	152
Performing Loans and Non Accrual Loans [Member] | 60-89 Days Past Due [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,322	551
Performing Loans and Non Accrual Loans [Member] | 60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	57	60
Performing Loans and Non Accrual Loans [Member] | 90 Days and Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	839	692
Performing Loans and Non Accrual Loans [Member] | 90 Days and Greater [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	82
Performing Loans and Non Accrual Loans [Member] | 90 Days and Greater [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	247
Performing Loans and Non Accrual Loans [Member] | 90 Days and Greater [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	170	150
Performing Loans and Non Accrual Loans [Member] | 90 Days and Greater [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	290	533
Performing Loans and Non Accrual Loans [Member] | 90 Days and Greater [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	50	9
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 3,825	$ 8,512

Loans, Net and Allowance for _8

Loans, Net and Allowance for Loan Losses - Schedule of Information Concerning Impaired Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	$ 6,899	$ 13,703
Impaired loans with an allowance recorded, recorded investment	1,964	1,056
Impaired loans, recorded investment	8,863	14,759
Impaired loans with no related allowance recorded, unpaid principal balance	6,899	13,721
Impaired loans with an allowance recorded, unpaid principal balance	2,102	1,194
Impaired loans, unpaid principal balance	9,001	14,915
Impaired loans with an allowance recorded, related allowance	488	224
Impaired loans, related allowance	488	224
Impaired loans with no related allowance recorded, average recorded investment	9,716	14,270
Impaired loans with an allowance recorded, average recorded investment	1,977	1,057
Impaired loans, average recorded investment	11,693	15,327
Impaired loans with no related allowance recorded, interest income recognized	3,870	566
Impaired loans with an allowance recorded, interest income recognized	27	36
Impaired loans, interest income recognized	3,897	602
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	149	1,107
Impaired loans with an allowance recorded, recorded investment	1,249	185
Impaired loans, recorded investment	1,398	1,292
Impaired loans with no related allowance recorded, unpaid principal balance	149	1,107
Impaired loans with an allowance recorded, unpaid principal balance	1,249	185
Impaired loans, unpaid principal balance	1,398	1,292
Impaired loans with an allowance recorded, related allowance	382	56
Impaired loans, related allowance	382	56
Impaired loans with no related allowance recorded, average recorded investment	459	1,210
Impaired loans with an allowance recorded, average recorded investment	1,117	186
Impaired loans, average recorded investment	1,576	1,396
Impaired loans with no related allowance recorded, interest income recognized	564	77
Impaired loans with an allowance recorded, interest income recognized	7	1
Impaired loans, interest income recognized	571	78
Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	4,284	9,399
Impaired loans with an allowance recorded, recorded investment	534	531
Impaired loans, recorded investment	4,818	9,930
Impaired loans with no related allowance recorded, unpaid principal balance	4,284	9,399
Impaired loans with an allowance recorded, unpaid principal balance	534	531
Impaired loans, unpaid principal balance	4,818	9,930
Impaired loans with an allowance recorded, related allowance	78	76
Impaired loans, related allowance	78	76
Impaired loans with no related allowance recorded, average recorded investment	6,382	10,164
Impaired loans with an allowance recorded, average recorded investment	676	532
Impaired loans, average recorded investment	7,058	10,696
Impaired loans with no related allowance recorded, interest income recognized	2,846	340
Impaired loans with an allowance recorded, interest income recognized	17	23
Impaired loans, interest income recognized	2,863	363
Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	2,466	3,197
Impaired loans with an allowance recorded, recorded investment	181	340
Impaired loans, recorded investment	2,647	3,537
Impaired loans with no related allowance recorded, unpaid principal balance	2,466	3,215
Impaired loans with an allowance recorded, unpaid principal balance	319	478
Impaired loans, unpaid principal balance	2,785	3,693
Impaired loans with an allowance recorded, related allowance	28	92
Impaired loans, related allowance	28	92
Impaired loans with no related allowance recorded, average recorded investment	2,875	2,896
Impaired loans with an allowance recorded, average recorded investment	184	339
Impaired loans, average recorded investment	3,059	3,235
Impaired loans with no related allowance recorded, interest income recognized	460	149
Impaired loans with an allowance recorded, interest income recognized	3	12
Impaired loans, interest income recognized	$ 463	$ 161

Loans, Net and Allowance for _9

Loans, Net and Allowance for Loan Losses - Schedule of Number of Loans and Recorded Investment in Troubled Debt Restructurings (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)Contract	Dec. 31, 2017USD ($)Contract
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings, Number of Contracts | Contract	14	19
Troubled Debt Restructurings, Recorded Investment	$ 2,925	$ 5,606
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings, Number of Contracts | Contract		2
Troubled Debt Restructurings, Pre-Modification Outstanding Recorded Investment		$ 196
Troubled Debt Restructurings, Post-Modification Outstanding Recorded Investment		173
Troubled Debt Restructurings, Recorded Investment		$ 128

Loans, Net and Allowance for_10

Loans, Net and Allowance for Loan Losses - Summary of Unpaid Principal Balances and Related Carrying Amounts of Acquired Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	$ 322,504	$ 438,423
Carrying Amount	318,153	426,658
Credit Impaired Purchased Loans Evaluated Individually for Incurred Credit Losses [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	7,491	16,803
Carrying Amount	3,825	8,512
Other Purchased Loans Evaluated Collectively for Incurred Credit Losses [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	315,013	421,620
Carrying Amount	$ 314,328	$ 418,146

Loans, Net and Allowance for_11

Loans, Net and Allowance for Loan Losses - Summary of Changes in Accretable Discount Related to Purchased Credit Impaired Loans (Detail) - Citizens National Bank of Meyersdale [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance - beginning of period	$ 2,129	$ 370
Additions		2,056
Accretion recognized during the period	(3,791)	(297)
Net reclassification from non-accretable to accretable	2,241
Balance—end of period	$ 579	$ 2,129

Off-Balance Sheet Financial I_3

Off-Balance Sheet Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Valuation allowance for off-balance sheet credit losses	$ 73	$ 66

Off-Balance Sheet Financial I_4

Off-Balance Sheet Financial Instruments - Schedule of Contractual Amounts of Off-Balance Sheet Commitments (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts	$ 161,732	$ 129,734
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts	5,789	4,871
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts	96,431	52,706
Unused Portions of Lines of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts	$ 59,512	$ 72,157

Premises and Equipment, Net - S

Premises and Equipment, Net - Schedule of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 25,695	$ 24,918
Less accumulated depreciation	7,487	6,287
Premises and equipment, Net	18,208	18,631
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	4,361	4,561
Premises and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	15,261	14,303
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 6,073	$ 6,054

Premises and Equipment, Net - A

Premises and Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating Leased Assets [Line Items]
Depreciation and amortization included to noninterest expense	$ 1,219	$ 702
Rent expense	$ 522	$ 488
Minimum [Member]
Operating Leased Assets [Line Items]
Operating leases extended period of lease	1 year
Maximum [Member]
Operating Leased Assets [Line Items]
Operating leases extended period of lease	10 years

Premises and Equipment, Net -_2

Premises and Equipment, Net - Schedule of Future Minimum Lease Payments under Non-Cancelable Lease Arrangements (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Property, Plant and Equipment [Abstract]
2019	$ 536
2020	505
2021	443
2022	360
2023	219
Thereafter	582
Operating leases, Future minimum annual rent commitments total	$ 2,645

Intangible Assets, Net - Summar

Intangible Assets, Net - Summary of Gross Carrying Amount and Accumulated Amortization Related to Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount	$ 5,742	$ 5,863
Intangible assets, Accumulated Amortization	2,233	1,487
Core Deposit Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount	4,558	4,558
Intangible assets, Accumulated Amortization	1,667	968
Customer List Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount	1,082	1,164
Intangible assets, Accumulated Amortization	541	475
Non-compete Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount		39
Intangible assets, Accumulated Amortization		39
Trade Name Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross Carrying Amount	102	102
Intangible assets, Accumulated Amortization	$ 25	$ 5

Intangible Assets, Net - Additi

Intangible Assets, Net - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 867	$ 538

Intangible Assets, Net - Estima

Intangible Assets, Net - Estimation of Amortization Expense (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2019	$ 773
2020	676
2021	581
2022	479
2023	370
Thereafter	630
Total amortization expense for intangibles	$ 3,509

Other Assets - Components of Ot

Other Assets - Components of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Assets [Abstract]
Other real estate owned	$ 721	$ 236
Bank owned life insurance	29,862	29,065
Restricted equity securities	1,054	1,306
Deferred tax assets	5,884	7,949
Other assets	4,635	5,147
Total	$ 42,156	$ 43,703

Deposits - Components of Intere

Deposits - Components of Interest-Bearing and Noninterest-Bearing Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Interest-bearing deposits:
Money market accounts	$ 113,220	$ 135,747
Now accounts	286,082	238,609
Savings accounts	128,762	189,044
Time deposits	313,955	307,185
Total interest-bearing deposits	842,019	870,585
Noninterest-bearing deposits	162,574	155,895
Total deposits	$ 1,004,593	$ 1,026,480

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Deposits [Line Items]
Aggregate amount of time deposits at or above FDIC insurance limit of $250,000	$ 33,044	$ 35,182
Deposits	1,004,593	1,026,480
Aggregate amount of deposits reclassified as loan	169	145
Related Parties [Member]
Schedule Of Deposits [Line Items]
Deposits	$ 1,476	$ 3,578

Deposits - Schedule of Aggregat

Deposits - Schedule of Aggregate Amounts of Maturities for all Time Deposits (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Deposits [Abstract]
2019	$ 106,488
2020	78,909
2021	58,023
2022	41,203
2023	21,623
Thereafter	7,709
Total	$ 313,955

Short-term Borrowings - Summary

Short-term Borrowings - Summary of Short-term Borrowings (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Short-term borrowings, Ending Balance		$ 6,000,000
Short-term borrowings, Average Balance	$ 1,799,000	19,106,000
Short-term borrowings, Maximum Month-End Balance	$ 20,494,000	$ 43,000,000
Short-term borrowings, Weighted Average Rate for the Year	1.67%	1.20%
Short-term borrowings, Weighted Average Rate at End of the Year		1.54%
Atlantic Community Bankers Bank [Member]
Short-term Debt [Line Items]
Short-term borrowings, Average Balance	$ 106,000	$ 149,000
Short-term borrowings, Maximum Month-End Balance	$ 3,394,000
Short-term borrowings, Weighted Average Rate for the Year	1.89%	1.34%
Federal Home Loan Bank of Pittsburgh [Member]
Short-term Debt [Line Items]
Short-term borrowings, Ending Balance	$ 39,200,000	$ 6,000,000
Short-term borrowings, Average Balance	1,693,000	18,957,000
Short-term borrowings, Maximum Month-End Balance	$ 17,100,000	$ 43,000,000
Short-term borrowings, Weighted Average Rate for the Year	1.65%	1.20%
Short-term borrowings, Weighted Average Rate at End of the Year		1.54%

Short-term Borrowings - Additio

Short-term Borrowings - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Short-term borrowings outstanding amount		$ 6,000,000
Federal Home Loan Bank of Pittsburgh [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	$ 419,307,000
Short-term borrowings outstanding amount	39,200,000	6,000,000
Unsecured Debt [Member] | Atlantic Community Bankers Bank [Member]
Short-term Debt [Line Items]
Maximum borrowing capacity	10,000,000	10,000,000
Outstanding line of credit	$ 0	$ 0

Long-term Debt - Schedule of Lo

Long-term Debt - Schedule of Long-term Debt Advances (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 16, 2018	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Maturity Date		Sep. 15, 2035
Borrowings		$ 6,892	$ 13,233
Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Maturity Date	Mar. 3, 2031	Mar. 3, 2031
Borrowings			1,823
Unsecured Term Loan [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest Rate		4.25%
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility First Draw [Member]
Debt Instrument [Line Items]
Maturity Date	Mar. 3, 2031	Mar. 3, 2031
Borrowings			318
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility First Draw [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest Rate		4.25%
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Second Draw [Member]
Debt Instrument [Line Items]
Maturity Date	Mar. 3, 2031	Mar. 3, 2031
Borrowings			1,818
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Second Draw [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest Rate		4.25%
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Third Draw [Member]
Debt Instrument [Line Items]
Maturity Date	Apr. 3, 2031	Apr. 3, 2031
Borrowings			1,874
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Third Draw [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest Rate		4.25%
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Fourth Draw [Member]
Debt Instrument [Line Items]
Maturity Date	Jun. 3, 2032	Jun. 3, 2032
Borrowings			$ 582
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Fourth Draw [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest Rate		4.50%
Subordinated Debt One [Member]
Debt Instrument [Line Items]
Maturity Date	Sep. 17, 2033	Sep. 17, 2033
Interest Rate		5.74%	4.55%
Borrowings		$ 4,195	$ 4,164
Subordinated Debt One [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest Rate		5.74%
Subordinated Debt Two [Member]
Debt Instrument [Line Items]
Maturity Date		Sep. 15, 2035
Interest Rate		4.33%	3.13%
Borrowings		$ 2,697	$ 2,654
Subordinated Debt Two [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Interest Rate		4.33%

Long-term Debt - Scheduled Cont

Long-term Debt - Scheduled Contractual Maturities of Borrowings (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Long-term Debt, Fiscal Year Maturity [Abstract]
2019
2020
2021
2022
2023
Thereafter	6,892
Total	$ 6,892	$ 13,233

Long-term Debt - Additional Inf

Long-term Debt - Additional Information (Detail) - USD ($)	Jul. 11, 2016	Mar. 16, 2018	Dec. 31, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Debt instrument, maturity date			Sep. 15, 2035
Debentures, maximum interest payment deferral period			5 years
Subordinated Debt One [Member]
Line of Credit Facility [Line Items]
Debt instrument, maturity date		Sep. 17, 2033	Sep. 17, 2033
Interest Rate			5.74%	4.55%
Floating interest rate description			Three-month LIBOR rate plus 2.95%.
Trust preferred securities			$ 5,000,000
Percentage of principal amount that can be redeemed			100.00%
Subordinated Debt One [Member] | Interest Rate Floor [Member]
Line of Credit Facility [Line Items]
Interest Rate			5.74%
Subordinated Debt One [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.95%
Subordinated Debt Two [Member]
Line of Credit Facility [Line Items]
Debt instrument, maturity date			Sep. 15, 2035
Interest Rate			4.33%	3.13%
Floating interest rate description			Three-month LIBOR plus 1.54%.
Trust preferred securities			$ 4,000,000
Percentage of principal amount that can be redeemed			100.00%
Subordinated Debt Two [Member] | Interest Rate Floor [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.33%
Subordinated Debt Two [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.54%
Unsecured Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, maturity date		Mar. 3, 2031	Mar. 3, 2031
Unsecured Term Loan [Member] | Interest Rate Floor [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.25%
Unsecured Term Loan [Member] | Local Bank [Member]
Line of Credit Facility [Line Items]
Unsecured term loan			$ 2,000,000
Debt instrument, maturity date			Mar. 3, 2031
Interest Rate			3.25%
Debt instrument, term			180 months
Debt instrument, interest only payment term			18 months
Debt instrument, floating interest rate adjustment period			3 years
Floating interest rate description			Fixed at 3.25% until March 3, 2016, and thereafter, adjusted every three years and indexed to the weekly average yield on U.S. Treasury securities adjusted to a constant maturity of three years, plus 3%, with a floor of 4.25%.
Debt instrument, change in interest rate date			Mar. 3, 2016
Debt instrument, payment terms			Interest is payable monthly for a period of 18 months until March 3, 2016, and thereafter, 180 monthly payments of principal and interest in an amount sufficient to fully amortize the balance of the loan over 15 years.
Unsecured Term Loan [Member] | Local Bank [Member] | Interest Rate Floor [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.25%
Basis spread on variable rate			3.00%
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility First Draw [Member]
Line of Credit Facility [Line Items]
Debt instrument, maturity date		Mar. 3, 2031	Mar. 3, 2031
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Second Draw [Member]
Line of Credit Facility [Line Items]
Debt instrument, maturity date		Mar. 3, 2031	Mar. 3, 2031
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Third Draw [Member]
Line of Credit Facility [Line Items]
Debt instrument, maturity date		Apr. 3, 2031	Apr. 3, 2031
Unsecured Non Revolving Line of Credit [Member] | Line of Credit Facility Fourth Draw [Member]
Line of Credit Facility [Line Items]
Debt instrument, maturity date		Jun. 3, 2032	Jun. 3, 2032
Unsecured Non Revolving Line of Credit [Member] | Interest Rate Floor [Member] | Line of Credit Facility First Draw [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.25%
Unsecured Non Revolving Line of Credit [Member] | Interest Rate Floor [Member] | Line of Credit Facility Second Draw [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.25%
Unsecured Non Revolving Line of Credit [Member] | Interest Rate Floor [Member] | Line of Credit Facility Third Draw [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.25%
Unsecured Non Revolving Line of Credit [Member] | Interest Rate Floor [Member] | Line of Credit Facility Fourth Draw [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.50%
Unsecured Non Revolving Line of Credit [Member] | Local Bank [Member]
Line of Credit Facility [Line Items]
Line of credit				$ 4,592,000
Line of credit, maximum borrowing capacity			$ 5,000,000
Line of credit, description			The maximum term of the facility is 42 months consisting of a non-revolving draw period followed by a principal repayment term.
Line of credit, fixed interest rate	3.99%
Line of credit, change in interest rate date			Jan. 11, 2016
Line of credit, floating interest rate description			The interest rate will be adjusted every three years and indexed to the weekly average yield on U.S. Treasury securities adjusted to a constant maturity of three years, plus 3%, rounded up to the nearest 0.125%, with a floor of 4.50% until July 11, 2016, and then a floor of 4.25% thereafter.
Line of credit, floating interest rate adjustment period			3 years
Line of credit, payment terms			monthly payments of principal including interest in an amount sufficient to fully amortize the balance of the loan over the term of the loan.
Line of credit, change in basis spread on variable rate date			Jan. 11, 2016
Unsecured Non Revolving Line of Credit [Member] | Local Bank [Member] | Line of Credit Facility First Draw [Member]
Line of Credit Facility [Line Items]
Line of credit			$ 350,000
Unsecured Non Revolving Line of Credit [Member] | Local Bank [Member] | Line of Credit Facility Second Draw [Member]
Line of Credit Facility [Line Items]
Line of credit			2,000,000
Unsecured Non Revolving Line of Credit [Member] | Local Bank [Member] | Line of Credit Facility Third Draw [Member]
Line of Credit Facility [Line Items]
Line of credit			2,050,000
Unsecured Non Revolving Line of Credit [Member] | Local Bank [Member] | Line of Credit Facility Fourth Draw [Member]
Line of Credit Facility [Line Items]
Line of credit			$ 600,000
Unsecured Non Revolving Line of Credit [Member] | Local Bank [Member] | Interest Rate Floor [Member]
Line of Credit Facility [Line Items]
Interest Rate			4.50%
Unsecured Non Revolving Line of Credit [Member] | Treasury Rate [Member] | Local Bank [Member]
Line of Credit Facility [Line Items]
Line of credit, basis spread on variable rate			3.00%
Line of credit, floating interest rate, rounded			0.125%

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 104,677	$ 93,201
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	104,677	93,201
Fair Value Measurements Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	104,677	93,201
Fair Value Measurements Recurring [Member] | Taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	33,278	35,002
Fair Value Measurements Recurring [Member] | Tax-Exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	12,776	16,308
Fair Value Measurements Recurring [Member] | Mortgage-Backed Securities - U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	23,670	22,817
Fair Value Measurements Recurring [Member] | Mortgage-backed Securities - U.S. Government-sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	26,195	10,089
Fair Value Measurements Recurring [Member] | Corporate Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	8,758	8,985
Fair Value Measurements Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	104,677	93,201
Fair Value Measurements Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	33,278	35,002
Fair Value Measurements Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Tax-Exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	12,776	16,308
Fair Value Measurements Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities - U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	23,670	22,817
Fair Value Measurements Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities - U.S. Government-sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	26,195	10,089
Fair Value Measurements Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 8,758	$ 8,985

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Detail) - Fair Value Measurements Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 721	$ 236
Impaired loans, net of related allowance	1,476	832
Total	2,197	1,068
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	721	236
Impaired loans, net of related allowance	1,476	832
Total	$ 2,197	$ 1,068

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Additional Quantitative Information about Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value Measurements Nonrecurring [Member] - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Estimate	$ 2,197,000	$ 1,068,000
Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Estimate	$ 721	$ 236,000
Valuation Technique	Appraisal of collateral	Appraisal of collateral
Unobservable Input	Appraisal adjustments	Appraisal adjustments
Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input	Liquidation expenses	Liquidation expenses
Impaired Loan [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Estimate	$ 1,476	$ 832,000
Valuation Technique	Appraisal of collateral	Appraisal of collateral
Unobservable Input	Appraisal adjustments	Appraisal adjustments
Impaired Loan [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable Input	Liquidation expenses	Liquidation expenses
Minimum [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	0.00%	0.00%
Minimum [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	0.00%	0.00%
Minimum [Member] | Impaired Loan [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	0.00%	0.00%
Minimum [Member] | Impaired Loan [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	7.00%	0.00%
Maximum [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	69.00%	69.00%
Maximum [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	7.00%	7.00%
Maximum [Member] | Impaired Loan [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	0.00%	0.00%
Maximum [Member] | Impaired Loan [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	25.00%	7.00%
Weighted Average [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	28.40%	(39.00%)
Weighted Average [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	7.00%	(7.00%)
Weighted Average [Member] | Impaired Loan [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	0.00%	(0.00%)
Weighted Average [Member] | Impaired Loan [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range (Weighted Average)	10.30%	(7.00%)

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Carrying and Fair Values of Riverview's Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financial assets:
Cash and cash equivalents	$ 53,816	$ 25,786	$ 19,120
Investment securities available-for-sale	104,677	93,201
Loans held for sale	637	254
Net loans	886,836	949,665
Accrued interest receivable	3,010	3,237
Restricted equity securities	1,054	1,306
Financial liabilities:
Deposits	1,004,593	1,026,480
Short-term borrowings		6,000
Long-term borrowings	6,892	13,233
Accrued interest payable	484	468
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	53,816	25,786
Investment securities available-for-sale	104,677	93,201
Loans held for sale	637	254
Net loans	886,836	949,665
Accrued interest receivable	3,010	3,237
Restricted equity securities	1,054	1,306
Financial liabilities:
Deposits	1,004,593	1,026,480
Short-term borrowings		6,000
Long-term borrowings	6,892	13,233
Accrued interest payable	484	468
Fair Value [Member]
Financial assets:
Cash and cash equivalents	53,816	25,786
Investment securities available-for-sale	104,677	93,201
Loans held for sale	637	254
Net loans	872,455	954,876
Accrued interest receivable	3,010	3,237
Restricted equity securities	1,054	1,306
Financial liabilities:
Deposits	999,929	1,022,068
Short-term borrowings		6,000
Long-term borrowings	6,892	14,634
Accrued interest payable	484	468
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Cash and cash equivalents	53,816	25,786
Restricted equity securities	1,054	1,306
Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Investment securities available-for-sale	104,677	93,201
Loans held for sale	637	254
Accrued interest receivable	663	640
Financial liabilities:
Deposits	999,929	1,022,068
Short-term borrowings		6,000
Long-term borrowings	6,892	14,634
Accrued interest payable	484	468
Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Net loans	872,455	954,876
Accrued interest receivable	$ 2,347	$ 2,597

Revenue Recognition - Summary o

Revenue Recognition - Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Noninterest Income [Abstract]
Noninterest Income	$ 8,880	$ 4,411
In-scope of Topic 606 [Member]
Noninterest Income [Abstract]
Noninterest Income	7,423	3,213
In-scope of Topic 606 [Member] | Service Charges, Fees and Commissions [Member]
Noninterest Income [Abstract]
Noninterest Income	5,697	2,037
In-scope of Topic 606 [Member] | Investment Advisory, Management and Administrative Service [Member]
Noninterest Income [Abstract]
Noninterest Income	1,726	1,176
Out-scope of Topic 606 [Member]
Noninterest Income [Abstract]
Noninterest Income	$ 1,457	$ 1,198

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Contract with Customer, Asset, Net	$ 0	$ 0
Contract with Customer, Liability	$ 0	$ 0

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)InstallmentAgreement$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares	Jun. 26, 2018shares	Mar. 16, 2018shares	Dec. 31, 2016shares	Apr. 15, 2015shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined contribution plan, employer matching contribution, percentage	100.00%
Defined contribution plan, maximum percentage of employees' compensation	4.00%
Defined contribution plan, expenses | $	$ 508,000	$ 328,000
Defined contribution plan, discretionary contributions | $	0	0
Compensation expense | $	$ 332,000	240,000
Number of SERP agreements | Agreement	12
Accrued benefit obligations of deferred compensation plans | $	$ 4,749,000	$ 4,460,000
Exercise of stock options, shares	35,516	38,833
Intrinsic value of options exercised | $	$ 115,000
Fair value of options exercised | $	490,000
Proceeds from exercise of options | $	$ 41,000	$ 411,000
Number of outstanding stock options with intrinsic value	220,130
Number of outstanding stock options	263,480	298,246			321,079
Market value of stock | $ / shares	$ 10.90	$ 13.15
Number of outstanding stock options exercisable			1,500	5,000
Option exercise price | $ / shares	$ 13.05
Accumulated benefit obligation amount | $	$ 7,669,000	$ 8,403,000
Grants during the period	6,500	20,000
Share Based Compensation Arrangement By Share Based Payment Award Options With No Intrinsic Value Number | $	$ 43,350
Common Stock Market Price | $ / shares	$ 10.90	$ 13.15
Pension Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net actuarial credit expected to be amortized | $	$ 17,000
10.60 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	88,000	113,500
Option exercise price | $ / shares	$ 10.60	$ 10.60
10.35 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	12,500	12,500
Option exercise price | $ / shares	$ 10.35	$ 10.35
9.75 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	26,830	31,996
Option exercise price | $ / shares	$ 9.75	$ 9.75
10.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	92,800	98,400
Option exercise price | $ / shares	$ 10	$ 10
12.25 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	2,500	2,500
Option exercise price | $ / shares	$ 12.25	$ 12.25
13.05 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	19,350	19,350
Option exercise price | $ / shares		$ 13.05
11.94 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	15,000	20,000
Option exercise price | $ / shares	$ 11.94	$ 11.94
12.97 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	5,000
Option exercise price | $ / shares	$ 12.97
12.58 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of outstanding stock options exercisable	1,500
Option exercise price | $ / shares	$ 12.58
Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Registered number of common shares	350,000
Options vesting period	7 years
Options vesting percentage	100.00%
Options expiration period	10 years
Recognized compensation expense | $	$ 9,000	$ 203,000
Grants during the period	6,500
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Registered number of common shares						75,000,000
Number of shares available for purchase	170,000,000
Discount on purchase price for shares available for purchase under ESPP	15.00%
Common stock, number of shares acquired under ESPP	18,650,000	11,301,000
Director Emeritus [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual payment | $	$ 15,000
Benefits period	5 years
Number of monthly installments | Installment	12
Compensation expense | $	$ 83,000	$ 38,000
Nine Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Benefits period	15 years
Three Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Benefits period	20 years

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Stock Option Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Outstanding, Beginning balance	298,246	321,079
Granted, Shares	6,500	20,000
Forfeited, Shares	(5,750)	(4,000)
Exercised, Shares	(35,516)	(38,833)
Outstanding, Ending balance	263,480	298,246
Options vested and exercisable at year-end	256,980	298,246
Range of exercise price, Lower	$ 9.75	$ 9.75
Range of exercise price, Upper	$ 13.05	$ 13.05
Remaining contractual life	4 years 22 days	4 years 8 months 19 days
Outstanding, Weighted Average Exercise Price Per Share, Beginning balance	$ 10.56	$ 10.47
Granted, Weighted Average Exercise Price Per Share	12.88	11.94
Forfeited, Weighted Average Exercise Price Per Share	10.60	10
Exercised, Weighted Average Exercise Price Per Share	10.57	10.59
Outstanding, Weighted Average Exercise Price Per Share, Ending balance	$ 10.62	$ 10.56

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Weighted Average Assumptions of Fair Value of Option Granted (Detail) - $ / shares	1 Months Ended
	Jun. 26, 2018	Mar. 16, 2018
Retirement Benefits [Abstract]
Number of options	1,500	5,000
Fair value per share	$ 1.39	$ 2.01
Dividend yield	3.28%	4.24%
Expected life	8 years 6 months	8 years 6 months
Expected volatility	14.02%	23.26%
Risk-free interest rate	2.83%	2.78%

Employee Benefit Plans - Sche_2

Employee Benefit Plans - Schedule of Plan's Funded Status (Detail) - Defined Benefit Pension Plan and Post Retirement Benefit Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Change in benefit obligations:
Benefit obligation beginning January 1	$ 8,403	$ 8,002
Interest cost	291	322
Benefits paid	(546)	(535)
Assumption of CBT obligation		154
Change due to plan amendment		(95)
Actuarial (gain)/loss	(479)	555
Benefit obligation at end of year	7,669	8,403
Change in plan assets:
Fair value of plan assets at January 1	7,191	6,723
Actual return on plan assets	(349)	807
Contributions	8	193
Benefits paid	(540)	(532)
Fair value of plan assets at end of year	6,310	7,191
Funded status included in other liabilities	$ (1,359)	$ (1,212)

Employee Benefit Plans - Sche_3

Employee Benefit Plans - Schedule of Amounts Related to Plan Recognized in Accumulated Other Comprehensive Loss but not Yet Recognized as Component of Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Income tax expense (benefit)	$ (277)	$ 451
Net amount recognized in other comprehensive income (loss)	(1,040)	877
Defined Benefit Pension Items [Member]
Defined Benefit Plan Disclosure [Line Items]
Income tax expense (benefit)	(238)	(183)
Net amount recognized in other comprehensive income (loss)	(894)	(686)
Defined Benefit Pension Items [Member] | Defined Benefit Pension Plan and Post Retirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss)	(1,132)	(869)
Income tax expense (benefit)	(238)	(183)
Net amount recognized in other comprehensive income (loss)	$ (894)	$ (686)

Employee Benefit Plans - Sche_4

Employee Benefit Plans - Schedule of Net Periodic Pension Expense and Postretirement Benefit Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Postretirement Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 1
Interest cost	$ 2	1
Net periodic pension cost / postretirement benefit cost (credit)	2	2
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	291	322
Expected return on plan assets	(486)	(456)
Amortization of net loss	81	49
Net periodic pension cost / postretirement benefit cost (credit)	$ (114)	$ (85)

Employee Benefit Plans - Summ_2

Employee Benefit Plans - Summary of Actuarial Assumptions Used for Company's Pension and Postretirement Benefit Plan (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Pension Plan [Member] | Union [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.60%	4.14%
Expected long-term rate of return on plan assets	7.00%	7.00%
Pension Plan [Member] | Citizens [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.60%	4.14%
Expected long-term rate of return on plan assets	7.00%	7.00%
Postretirement Life [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.25%	3.75%

Employee Benefit Plans - Sche_5

Employee Benefit Plans - Schedule of Expected Benefit Payments (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2019	$ 528
2020	522
2021	513
2022	513
2023	502
2024 - 2028	2,362
Total	4,940
Postretirement Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
2019	5
2020	5
2021	5
2022	4
2023	4
2024 - 2028	16
Total	$ 39

Employee Benefit Plans - Sche_6

Employee Benefit Plans - Schedule of Company's Pension Plan Asset Allocations, by Asset Category (Detail) - Pension Plan [Member]	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Pension plan asset allocations	100.00%	100.00%
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan asset allocations	0.70%	0.76%
Equity Securities, Financial Services [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan asset allocations	34.53%	40.19%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan asset allocations	64.77%	59.05%

Employee Benefit Plans - Sche_7

Employee Benefit Plans - Schedule of Fair Value of Company's Pension Plan Assets, by Asset Category (Detail) - Pension Plan [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 6,310	$ 7,191
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	6,064	6,888
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	246	303
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	44	55
Cash and Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	44	55
Large Cap Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	233	297
Large Cap Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	233	297
Large Cap Core [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	237	302
Large Cap Core [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	237	302
Mid Cap Core [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	261	348
Mid Cap Core [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	261	348
Small Cap Core [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	115	166
Small Cap Core [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	115	166
International Growth [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	461	656
International Growth [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	461	656
Large Cap Growth [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	485	634
Large Cap Growth [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	485	634
Small/Mid Cap Growth [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	141	184
Small/Mid Cap Growth [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	141	184
Fixed Income - Core Plus [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	1,443	1,483
Fixed Income - Core Plus [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	1,443	1,483
Intermediate Duration [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	483	501
Intermediate Duration [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	483	501
Long Duration Government Credit [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	1,555	1,632
Long Duration Government Credit [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	1,555	1,632
Long U.S. Treasury - ETF [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	606	630
Long U.S. Treasury - ETF [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	606	630
Common/Collective Trust Large Cap Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	246	303
Common/Collective Trust Large Cap Value [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 246	$ 303

Income Taxes - Summary of Curre

Income Taxes - Summary of Current and Deferred Amounts of Provision for Income Taxes Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current tax expense (benefit)	$ 31
Deferred tax expense (benefit)	2,340	$ 3,501
Applicable Federal Income Tax Expense (Benefit)	$ 2,371	$ 3,501

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Asset (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for loan losses	$ 1,121	$ 991
Deferred compensation	1,007	949
Purchase accounting adjustments	827	1,863
Alternate minimum tax credit carryforwards	608	608
Benefit plans	238	183
Accrued expenses	242	231
Unrealized loss on investment securities available-for-sale	458	238
Low income housing credit carryforwards	1,063	1,063
Net operating loss carryforwards	761	1,827
Other	133	571
Total	6,458	8,524
Deferred tax liabilities:
Premises and equipment, net	(574)	(575)
Total	(574)	(575)
Net deferred tax asset	$ 5,884	$ 7,949

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Federal statutory rate	21.00%	34.00%
income tax expense	$ 3,888
Scenario, Plan [Member]
Income Tax Disclosure [Line Items]
Federal statutory rate	21.00%
Maximum [Member]
Income Tax Disclosure [Line Items]
Federal statutory rate		35.00%

Income Taxes - Reconciliation B

Income Taxes - Reconciliation Between Amount of Effective Income Tax Expense and Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal income tax at statutory rate	$ 2,778	$ (479)
Tax exempt interest	(248)	(282)
Bank owned life insurance income	(163)	(153)
Tax Cuts and Jobs Act legislation		3,888
Disallowed merger related costs		225
Other, net	4	302
Applicable Federal Income Tax Expense (Benefit)	$ 2,371	$ 3,501

Parent Company Financial Stat_3

Parent Company Financial Statements - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 53,816	$ 25,786	$ 19,120
Other assets	42,156	43,703
Total assets	1,137,603	1,163,607
Liabilities and stockholders' equity
Long-term borrowings	6,892	13,233
Other liabilities	11,724	11,170
Total liabilities	1,023,693	1,057,351
Stockholders' equity	113,910	106,256	41,920
Total Liabilities and stockholders' equity	1,137,603	1,163,607
Riverview Financial Corporation [Member]
Assets
Cash and cash equivalents	249	426	$ 24
Investment in bank subsidiary	120,607	119,297
Premises, net	73	73
Other assets	336	201
Total assets	121,265	119,997
Liabilities and stockholders' equity
Long-term borrowings	6,892	13,233
Other liabilities	463	508
Total liabilities	7,355	13,741
Stockholders' equity	113,910	106,256
Total Liabilities and stockholders' equity	$ 121,265	$ 119,997

Parent Company Financial Stat_4

Parent Company Financial Statements - Condensed Statements of Income and Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Condensed Income Statements, Captions [Line Items]
Income, dividends from bank subsidiary	$ 51,854	$ 29,593
Interest expense	7,965	4,120
Noninterest expense	38,925	28,560
Income (loss) before income taxes	13,229	(1,410)
Income tax benefit	2,371	3,501
Net income (loss)	10,858	(4,911)
Total comprehensive income (loss)	9,818	(4,034)
Riverview Financial Corporation [Member]
Condensed Income Statements, Captions [Line Items]
Income, dividends from bank subsidiary	9,229	2,090
Interest expense	747	379
Income before equity in undistributed net income of subsidiary	8,482	1,711
Undistributed net income (loss) of subsidiary	2,350	(7,019)
Noninterest expense	164	21
Income (loss) before income taxes	10,668	(5,329)
Income tax benefit	(190)	(418)
Net income (loss)	10,858	(4,911)
Total comprehensive income (loss)	$ 9,818	$ (4,034)

Parent Company Financial Stat_5

Parent Company Financial Statements - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 10,858	$ (4,911)
Adjustments to reconcile net income to net cash provided by operating activities:
Decrease in accrued interest payable and other liabilities	554	(669)
Net cash provided by (used in) operating activities	11,755	(673)
Cash flows from investing activities:
Net cash provided by (used in) investing activities	52,676	(111,113)
Cash flows from financing activities:
Proceeds from long-term debt		600
Repayment of long-term borrowings	(6,341)	(5,322)
Proceeds from exercise of options	41	411
Proceeds from issuance of common stock		15,941
Dividends paid	(2,731)	(3,257)
Net cash provided by (used in) financing activities	(36,401)	118,452
Cash and cash equivalents - beginning	25,786	19,120
Cash and cash equivalents - ending	53,816	25,786
Riverview Financial Corporation [Member]
Cash flows from operating activities:
Net income (loss)	10,858	(4,911)
Adjustments to reconcile net income to net cash provided by operating activities:
Option expense	9	203
Undistributed net (income) loss of subsidiary	(2,350)	7,019
Increase in accrued interest receivable and other assets	(135)	(124)
Decrease in accrued interest payable and other liabilities	(45)	(556)
Net cash provided by (used in) operating activities	8,337	1,631
Cash flows from investing activities:
Capitalization of subsidiary		(15,500)
Cash consideration for business acquisition		(1)
Net cash provided by (used in) investing activities		(15,501)
Cash flows from financing activities:
Proceeds from long-term debt		600
Repayment of long-term borrowings	(6,341)	(338)
Proceeds from exercise of options	41	411
Proceeds from issuance of common stock	517	16,856
Dividends paid	(2,731)	(3,257)
Net cash provided by (used in) financing activities	(8,514)	14,272
Increase (decrease) in cash and cash equivalents	(177)	402
Cash and cash equivalents - beginning	426	24
Cash and cash equivalents - ending	$ 249	$ 426

Regulatory Matters - Additional

Regulatory Matters - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Maximum percentage of capital and surplus transferable under Federal Regulation		10.00%
Maximum amount available for transfer from bank to company		$ 12,607,000
Loans outstanding		0	$ 0
Advances made during period		0	0
Small bank holding company asset threshold limit		$ 3,000,000,000	$ 1,000,000,000
Capital conservation buffer period					4 years
Maximum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer phase-in ratio in excess of minimum capital ratio		1.875%	1.25%	0.625%
Scenario, Forecast [Member] | Maximum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer phase-in ratio in excess of minimum capital ratio	2.50%

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of the Company's and Bank's Capital Ratios and Minimum Ratios Required for Capital Adequacy Purposes (Detail) - Riverview Bank [Member] - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital (to risk-weighted assets), Actual, Amount	$ 93,580,000	$ 90,553,000
Tier 1 capital (to average total assets), Actual, Amount	93,580,000	90,553,000
Common equity tier 1 risk-based capital (to risk-weighted assets), Actual, Amount	$ 93,580,000	$ 90,553,000
Tier 1 capital (to risk-weighted assets), Actual, Ratio	10.70%	9.70%
Tier 1 capital (to average total assets), Actual, Ratio	8.40%	7.90%
Common equity tier 1 risk-based capital (to risk-weighted assets), Actual, Ratio	10.70%	9.70%
Total risk-based capital (to risk-weighted assets), Actual, Amount	$ 100,001,000	$ 96,926,000
Total risk-based capital (to risk-weighted assets), Actual, Ratio	11.40%	10.40%
Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital (to risk-weighted assets), For Capital Adequacy Purposes, Amount	$ 68,936,000	$ 67,376,000
Tier 1 capital (to average total assets), For Capital Adequacy Purposes, Amount	44,733,000	45,583,000
Common equity tier 1 risk-based capital (to risk-weighted assets), For Capital Adequacy Purposes, Amount	$ 55,805,000	$ 53,437,000
Tier 1 capital (to risk-weighted assets)	7.875%	7.25%
Tier 1 capital (to average total assets)	4.00%	4.00%
Common equity tier 1 risk based capital (to risk-weighted assets)	6.375%	5.75%
Total risk-based capital (to risk-weighted assets), For Capital Adequacy Purposes, Amount	$ 86,443,000	$ 85,963,000
Total risk-based capital (to risk-weighted assets)	9.875%	9.25%
Total risk-based capital (to risk-weighted assets), To be Well Capitalized under Basel III, Amount	$ 87,538,000	$ 92,933,000
Tier 1 capital (to risk-weighted assets), To be Well Capitalized under Basel III, Amount	70,030,000	74,346,000
Tier 1 capital (to average total assets), To be Well Capitalized under Basel III, Amount	55,916,000	56,978,000
Common equity tier 1 risk-based capital (to risk-weighted assets), To be Well Capitalized under Basel III, Amount	$ 56,900,000	$ 60,407,000
Total risk-based capital (to risk-weighted assets)	10.00%	10.00%
Tier 1 capital (to risk-weighted assets)	8.00%	8.00%
Tier 1 capital (to average total assets)	5.00%	5.00%
Common equity tier 1 risk based capital (to risk-weighted assets)	6.50%	6.50%

Regulatory Matters - Schedule_2

Regulatory Matters - Schedule of the Company's and Bank's Capital Ratios and Minimum Ratios Required for Capital Adequacy Purposes (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Capital conservation buffer phase-in ratio	1.875%	1.25%