Riverview Financial (RIVE) 10-Q 8 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 31, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	RIVE
Entity Registrant Name	Riverview Financial Corp
Entity Central Index Key	1,590,799
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		9,112,408

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 13,310	$ 9,413
Interest-bearing deposits in other banks	43,505	16,373
Investment securities available-for-sale	97,102	93,201
Loans held for sale	598	254
Loans, net	915,529	955,971
Less: allowance for loan losses	6,472	6,306
Net loans	909,057	949,665
Premises and equipment, net	18,427	18,631
Accrued interest receivable	3,066	3,237
Goodwill	24,754	24,754
Intangible assets	3,721	4,376
Other assets	43,193	43,703
Total assets	1,156,733	1,163,607
Deposits:
Noninterest-bearing	162,385	155,895
Interest-bearing	858,379	870,585
Total deposits	1,020,764	1,026,480
Short-term borrowings		6,000
Long-term debt	13,019	13,233
Accrued interest payable	503	468
Other liabilities	10,416	11,170
Total liabilities	1,044,702	1,057,351
Stockholders' equity:
Common stock: no par value, authorized 20,000,000 shares; September 30, 2018, issued and outstanding 9,110,676 shares; December 31, 2017, issued and outstanding 9,069,363 shares	100,999	100,476
Capital surplus	356	423
Retained earnings	13,503	6,936
Accumulated other comprehensive loss	(2,827)	(1,579)
Total stockholders' equity	112,031	106,256
Total liabilities and stockholders' equity	$ 1,156,733	$ 1,163,607

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 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	9,110,676	9,069,363
Common stock, shares outstanding	9,110,676	9,069,363

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest and fees on loans:
Taxable		$ 11,957	$ 5,717	$ 35,424	$ 14,991
Tax-exempt		230	146	699	361
Interest and dividends on investment securities available-for-sale:
Taxable		551	477	1,616	1,607
Tax-exempt		80	47	243	140
Dividends					3
Interest on interest-bearing deposits in other banks		181	31	361	78
Interest on federal funds sold			2	20	12
Total interest income		12,999	6,420	38,363	17,192
Interest expense:
Interest on deposits		1,885	821	5,162	2,021
Interest on short-term borrowings			112	30	197
Interest on long-term debt		194	75	562	228
Total interest expense		2,079	1,008	5,754	2,446
Net interest income		10,920	5,412	32,609	14,746
Provision for loan losses		225	610	615	1,734
Net interest income after provision for loan losses		10,695	4,802	31,994	13,012
Noninterest income:
Bank owned life insurance investment income		194	107	584	254
Net gain on sale of investment securities available-for-sale			43	40	106
Total noninterest income		2,054	835	6,540	2,416
Noninterest expense:
Salaries and employee benefits expense		5,032	2,928	15,575	8,521
Net occupancy and equipment expense		1,008	615	3,142	1,895
Amortization of intangible assets		215	71	656	306
Net cost (benefit) of operation of other real estate owned		29	(13)	30	161
Other expenses		3,057	1,566	8,882	4,488
Total noninterest expense		9,341	5,167	28,285	15,371
Income before income taxes		3,408	470	10,249	57
Income tax expense (benefit)		620	69	1,863	44
Net income		2,788	401	8,386	13
Other comprehensive income :
Unrealized gain (loss) on investment securities available-for-sale		(576)	(50)	(1,539)	1,708
Reclassification adjustment for net gain on sale of investment securities available-for-sale included in net income	[1]		(43)	(40)	(106)
Other comprehensive income (loss)		(576)	(93)	(1,579)	1,602
Income tax expense (benefit) related to other comprehensive income		(121)	(32)	(331)	544
Other comprehensive income (loss), net of income taxes		(455)	(61)	(1,248)	1,058
Comprehensive income		$ 2,333	$ 340	$ 7,138	$ 1,071
Net income:
Basic		$ 0.30	$ 0.08	$ 0.92	$ 0.03
Diluted		$ 0.30	$ 0.08	$ 0.92	$ 0.03
Average common shares outstanding:
Basic		9,100,616	4,880,676	9,089,636	4,002,165
Diluted		9,156,931	4,945,456	9,143,041	4,060,813
Dividends declared		$ 0.10	$ 0.14	$ 0.20	$ 0.41
Service Charges, Fees and Commissions [Member]
Noninterest income:
Noninterest income		$ 1,267	$ 270	$ 4,146	$ 899
Commission and Fees on Fiduciary Activities [Member]
Noninterest income:
Noninterest income		226	31	671	92
Wealth Management Income [Member]
Noninterest income:
Noninterest income		199	179	572	631
Mortgage Banking Income [Member]
Noninterest income:
Noninterest income		$ 168	$ 205	$ 527	$ 434
[1]	Represents amounts reclassified out of accumulated other comprehensive income and included in gains on sale of investment securities on the consolidated statements of income and comprehensive income.

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	13				13
Other comprehensive income (loss), net of income taxes	1,058					1,058
Compensation cost of option grants	23			23
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	373		373
Exercise of stock options	61		61
Dividends declared	(2,010)				(2,010)
Balance at Sep. 30, 2017	57,379		45,427	243	12,848	(1,139)
Balance at Dec. 31, 2017	106,256		100,476	423	6,936	(1,579)
Net income	8,386				8,386
Other comprehensive income (loss), net of income taxes	(1,248)					(1,248)
Compensation cost of option grants	9			9
Issuance under ESPP, 401k and Dividend Reinvestment plans	406		406
Exercise of stock options	41		117	(76)
Dividends declared	(1,819)				(1,819)
Balance at Sep. 30, 2018	$ 112,031		$ 100,999	$ 356	$ 13,503	$ (2,827)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 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	36,552	29,840
Exercise of stock options, shares	4,761	5,750
Dividends declared, per share	$ 0.20	$ 0.41

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 8,386	$ 13
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization of premises and equipment	921	586
Provision for loan losses	615	1,734
Stock based compensation	9	23
Net amortization of investment securities available-for-sale	606	315
Net cost of operation of other real estate owned	30	161
Net loss on sale of investment securities available-for-sale	(40)	(106)
Accretion of purchase adjustment on loans	(3,754)	(127)
Amortization of intangible assets	656	306
Deferred income taxes	1,668	(47)
Proceeds from sale of loans originated for sale	20,278	20,733
Net gain on sale of loans originated for sale	(527)	(434)
Loans originated for sale	(20,095)	(20,166)
Bank owned life insurance investment income	(584)	(254)
Accrued interest receivable	171	(269)
Other assets	165	(1,255)
Accrued interest payable	35	21
Other liabilities	(754)	(638)
Net cash provided by operating activities	7,786	596
Investment securities available-for-sale:
Purchases	(20,135)
Proceeds from repayments	9,264	1,805
Proceeds from sales	4,825	15,827
Proceeds from the sale of other real estate owned	195	613
Net decrease (increase) in restricted equity securities	44	(341)
Net decrease (increase) in loans	43,090	(151,072)
Business disposition, net of cash		329
Purchases of premises and equipment	(717)	(548)
Purchase of bank owned life insurance	(21)	(5,017)
Net cash provided by (used in) investing activities	36,545	(138,404)
Cash flows from financing activities:
Net increase (decrease) in deposits	(5,716)	122,390
Net increase (decrease) in short-term borrowings	(6,000)	5,750
Repayment of long-term debt	(214)	(5,251)
Proceeds from long-term debt		600
Issuance under ESPP, 401k and DRP plans	406	373
Issuance of common stock		15,941
Proceeds from exercise of stock options	41	61
Cash dividends paid	(1,819)	(2,010)
Net cash provided by (used in) financing activities	(13,302)	137,854
Net increase in cash and cash equivalents	31,029	46
Cash and cash equivalents-beginning	25,786	19,120
Cash and cash equivalents-ending	56,815	19,166
Cash paid during the period for:
Interest	5,719	2,425
Income taxes	300
Noncash items from investing activities:
Other real estate acquired in settlement of loans	$ 657	$ 293

Summary of significant accounti

Summary of significant accounting policies	9 Months Ended
	Sep. 30, 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 for 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-Q Riverview Bank, with 30 full service offices and three 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, Blaire, Centre, Clearfield, Dauphin, Huntingdon, Lebanon, Lycoming, Northumberland, Perry, Schuylkill and Somerset Counties in Pennsylvania. Basis of presentation: The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP’) for interim financial information and with the instructions to Form 10-Q Regulation S-X. 10-K, 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, the determination of other-than-temporary impairment losses on securities and impairment of goodwill. Actual results could differ from those estimates. Recent Accounting Standards In January 2016, the Financial Accounting Standards Board, (“FASB”) issued ASU No. 2016-01, available-for-sale 2016-01 In February 2016, the FASB issued ASU No. 2016-02, 2016-02, right-of-use 2016-02 In June 2016, the FASB ASU No. 2016-13, 2016-13 requires 2016-13 available-for-sale In August 2016, the FASB issued ASU No. 2016-15, In December 2016, the FASB issued ASU No. 2016-20, ASU 2016-20 ASU 2014-09, 2014-09 2014-09 ASU 2016-20 2014-09 In January 2017, FASB issued ASU No. 2017-01, No. 2017-01 In January 2017, the FASB issued ASU No. 2017-03, 2014-09, 2016-02 2016-13 2014-01, In January 2017, FASB issued ASU No. 2017-04, In February 2017, the FASB issued ASU No. 2017-05, No. 2017-05 In March 2017, the FASB issued ASU No. 2017-07, No. 2017-07 In March 2017, FASB issued ASU No. 2017-08, 2017-08 In May 2017, the FASB issued ASU No. 2017-09, No. 2017-09 In August 2017, FASB issued ASU No. 2017-12, In September 2017, the FASB issued ASU No. 2017-13, No. 2014-09, No. 2016-02, 2017-13 In November 2017, the FASB issued ASU No. 2017-14 No. 33-10403, No. 2017-14 In February 2018, the FASB issued ASU No. 2018-02, No. 2018-02 In February 2018, the FASB issued ASU No. 2018-03, 825-10): No. 2016-01, No. 2018-03 In March 2018, the FASB has issued ASU No. 2018-05, No. 2018-05 In May 2018, the FASB issued ASU No. 2018-06, 942-740, No. 2018-06 In July 2018, the FASB issued ASU No. 2018-10, In July 2018, the FASB issued ASU No. 2018-11, 2016-02, In August 2018, the FASB issued ASU 2018-13, In August 2018, the FASB issued ASU No. 2018-14, 715-20)—Disclosure 715-20

Other comprehensive income (los

Other comprehensive income (loss)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Other comprehensive income (loss)	2. 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 The components of accumulated other comprehensive income (loss) included in stockholders’ equity at September 30, 2018 and December 31, 2017 is as follows: September 30, December 31, Net unrealized loss on investment securities available-for-sale $ (2,710 ) $ (1,131 ) Related income taxes (569 ) (238 ) Net of income taxes (2,141 ) (893 ) Benefit plan adjustments (869 ) (869 ) Related income taxes (183 ) (183 ) Net of income taxes (686 ) (686 ) Accumulated other comprehensive income (loss) $ (2,827 ) $ (1,579 ) Other comprehensive income (loss) and related tax effects for the three and nine months ended September 30, 2018 and 2017 is as follows: Three months ended September 30, 2018 2017 Unrealized gain (loss) on investment securities available-for-sale $ (576 ) $ (50 ) Net (gain) loss on the sale of investment securities available-for-sale (1) (43 ) Other comprehensive income (loss) before taxes (576 ) (93 ) Income tax expense (benefit) (121 ) (32 ) Other comprehensive income (loss) $ (455 ) $ (61 ) Nine months ended September 30, 2018 2017 Unrealized gain (loss) on investment securities available-for-sale $ (1,539 ) $ 1,708 Net (gain) loss on the sale of investment securities available-for-sale (1) (40 ) (106 ) Other comprehensive income (loss) before taxes (1,579 ) 1,602 Income tax expense (benefit) (331 ) 544 Other comprehensive income (loss) $ (1,248 ) $ 1,058 (1) Represents amounts reclassified out of accumulated other comprehensive income and included in gains on sale of investment securities on the consolidated statements of income and comprehensive income.

Earnings per share

Earnings per share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings per share	3. 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 three and nine months ended September 30, 2018 and 2017: Three months ended September 30, 2018 2017 Numerator: Net income $ 2,788 $ 401 Dividends on preferred stock Net income available to common stockholders $ 2,788 $ 401 Undistributed loss allocated to preferred stockholders Income allocated to common stockholders $ 2,788 $ 401 Denominator: Basic 9,100,616 4,880,676 Dilutive options 56,315 64,780 Diluted 9,156,931 4,945,456 Earnings per share: Basic $ 0.30 $ 0.08 Diluted $ 0.30 $ 0.08 Nine months ended September 30, 2018 2017 Numerator: Net income $ 8,386 $ 13 Dividends on preferred stock (371 ) Net income (loss) available to common stockholders $ 8,386 $ (358 ) Undistributed loss allocated to preferred stockholders 475 Income allocated to common stockholders $ 8,386 $ 117 Denominator: Basic 9,089,636 4,002,165 Dilutive options 53,405 58,648 Diluted 9,143,041 4,060,813 Earnings per share: Basic $ 0.92 $ 0.03 Diluted $ 0.92 $ 0.03 For the three and nine months ended September 30, 2018, there were no outstanding stock options that were excluded from the dilutive earnings per share calculation. There were 25,300 outstanding stock options for the three and nine months ended September 30, 2017 that were excluded from the diluted earnings per share calculation because of their antidilutive effect. 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. The additional capital allowed Riverview to announce on April 20, 2017, the execution of a definitive business combination agreement to form a strategic partnership with CBT Financial Corp, Clearfield, Pennsylvania. This action formed a combined community banking franchise with approximately $1.2 billion in assets. Effective as of the close of business on June 22, 2017, the Company filed an amendment to its Articles of Incorporation to authorize a class of non-voting non-voting non-voting non-voting

Investment securities

Investment securities	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment securities	4. Investment securities: The amortized cost and fair value of investment securities available-for-sale September 30, 2018 Amortized Gross Gross Fair State and municipals: Taxable $ 34,769 $ 139 $ 1,384 $ 33,524 Tax-exempt 13,583 4 286 13,301 Mortgage-backed securities: U.S. Government agencies 25,302 95 186 25,211 U.S. Government-sponsored enterprises 16,639 15 496 16,158 Corporate debt obligations 9,519 611 8,908 Total $ 99,812 $ 253 $ 2,963 $ 97,102 December 31, 2017 Amortized Gross Gross Fair 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 maturity distribution of the fair value, which is the net carrying amount, of the debt securities classified as available-for-sale September 30, 2018 Fair Within one year $ 3,470 After one but within five years 4,779 After five but within ten years 13,207 After ten years 34,277 55,733 Mortgage-backed securities 41,369 Total $ 97,102 Securities with a carrying value of $64,719 and $93,201 at September 30, 2018 and December 31, 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 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 September 30, 2018 and December 31, 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 September 30, 2018 Fair Unrealized Fair Unrealized Fair Unrealized State and municipals: Taxable $ 5,334 $ 113 $ 20,682 $ 1,271 $ 26,016 $ 1,384 Tax-exempt 9,932 181 2,795 105 12,727 286 Mortgage-backed securities: U.S. Government agencies 7,679 134 944 52 8,623 186 U.S. Government-sponsored enterprises 8,283 101 6,527 395 14,810 496 Corporate debt obligation 8,908 611 8,908 611 Total $ 31,228 $ 529 $ 39,856 $ 2,434 $ 71,084 $ 2,963 Less Than 12 Months 12 Months or More Total December 31, 2017 Fair Unrealized Fair Unrealized Fair Unrealized 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 obligation 3,800 200 5,185 344 8,985 544 Total $ 40,103 $ 404 $ 29,737 $ 1,130 $ 69,840 $ 1,534 The Company had 89 investment securities, consisting of 42 taxable state and municipal obligations, 25 tax-exempt tax-exempt The Company had 88 investment securities, consisting of 34 taxable state and municipal obligations, 21 tax-exempt

Loans, net and allowance for lo

Loans, net and allowance for loan losses	9 Months Ended
	Sep. 30, 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 September 30, 2018 and December 31, 2017 are summarized as follows. Net deferred loan costs were $1,019 and $863 at September 30, 2018 and December 31, 2017. September 30, December 31, Commercial $ 128,265 $ 140,116 Real estate: Construction 36,478 34,405 Commercial 510,840 526,230 Residential 227,132 240,626 Consumer 12,814 14,594 Total $ 915,529 $ 955,971 The changes in the allowance for loan losses account by major classification of loan for the three and nine months ended September 30, 2018 and 2017 are summarized as follows: Real Estate September 30, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance, July 1, 2018 $ 1,026 $ 249 $ 3,606 $ 1,295 $ 36 $ 189 $ 6,401 Charge-offs (23 ) (33 ) (133 ) (189 ) Recoveries 2 1 8 24 35 Provisions 411 61 (212 ) 26 120 (181 ) 225 Ending balance $ 1,416 $ 310 $ 3,395 $ 1,296 $ 47 $ 8 $ 6,472 Real Estate September 30, 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 (193 ) (93 ) (295 ) (581 ) Recoveries 10 5 29 88 132 Provisions 393 (69 ) 427 20 217 (373 ) 615 Ending balance $ 1,416 $ 310 $ 3,395 $ 1,296 $ 47 $ 8 $ 6,472 Real Estate September 30, 2017 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance, July 1, 2017 $ 757 $ 192 $ 2,965 $ 828 $ 49 $ 43 $ 4,834 Charge-offs (24 ) (18 ) (42 ) Recoveries 1 1 2 Provisions 421 (3 ) (56 ) 127 (4 ) 125 610 Ending balance $ 1,155 $ 189 $ 2,909 $ 937 $ 46 $ 168 $ 5,404 Real Estate September 30, 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 (34 ) (34 ) (7 ) (75 ) Recoveries 1 3 7 2 13 Provisions 559 29 796 175 7 $ 168 1,732 Ending balance $ 1,155 $ 189 $ 2,909 $ 937 $ 46 $ 168 $ 5,404 The allocation of the allowance for loan losses and the related loans by major classifications of loans at September 30, 2018 and December 31, 2017 is summarized as follows: Real Estate September 30, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Ending balance $ 1,416 $ 310 $ 3,395 $ 1,296 $ 47 $ 8 $ 6,472 Ending balance: individually evaluated for impairment 398 139 34 571 Ending balance: collectively evaluated for impairment 1,018 310 3,256 1,262 47 8 5,901 Ending balance: purchased credit impaired loans $ $ $ $ $ $ Loans receivable: Ending balance $ 128,265 $ 36,478 $ 510,840 $ 227,132 $ 12,814 $ 915,529 Ending balance: individually evaluated for impairment 1,280 3,413 2,256 6,949 Ending balance: collectively evaluated for impairment 126,697 36,478 503,555 224,085 12,814 903,629 Ending balance: purchased credit impaired loans $ 288 $ $ 3,872 $ 791 $ $ 4,951 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 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 by 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 occur in the future. 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 September 30, 2018 and December 31, 2017: September 30, 2018 Pass Special Substandard Doubtful Total Commercial $ 111,392 $ 9,423 $ 7,450 $ 128,265 Real estate: Construction 35,770 1 707 36,478 Commercial 489,199 8,805 12,836 510,840 Residential 221,778 2,524 2,830 227,132 Consumer 12,814 12,814 Total $ 870,953 $ 20,753 $ 23,823 $ 915,529 December 31, 2017 Pass Special 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 September 30, 2018 and December 31, 2017. Purchase credit impaired (“PCI”) loans are excluded from the aging and nonaccrual loan schedules. Accrual Loans September 30, 2018 30-59 Days 60-89 Days 90 or More Total Past Current Nonaccrual Total Loans Commercial $ 187 $ 113 $ 300 $ 126,505 $ 1,172 $ 127,977 Real estate: Construction 373 373 36,105 36,478 Commercial 379 520 $ 99 998 505,260 710 506,968 Residential 1,618 367 106 2,091 223,352 898 226,341 Consumer 107 48 20 175 12,639 12,814 Total $ 2,664 $ 1,048 $ 225 $ 3,937 $ 903,861 $ 2,780 $ 910,578 Purchased credit impaired loans 4,951 Total Loans $ 915,529 Accrual Loans December 31, 2017 30-59 Days 60-89 Days 90 or More Total Past Current Nonaccrual 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 three and nine months ended September 30, 2018 and 2017, and as of and for the year ended, December 31, 2017 by major loan classification: This Quarter Year-to-Date September 30, 2018 Recorded Unpaid Related Average Interest Average Interest With no related allowance: Commercial $ 288 $ 288 $ $ 327 $ 27 $ 562 $ 399 Real estate: Construction Commercial 6,181 6,181 6,580 795 7,081 2,165 Residential 2,865 2,883 2,941 64 3,011 201 Consumer Total 9,334 9,352 9,848 886 10,654 2,765 With an allowance recorded: Commercial 1,280 1,280 398 1,056 2 1,072 5 Real estate: Construction Commercial 1,104 1,104 139 818 4 723 11 Residential 182 320 34 184 184 3 Consumer Total 2,566 2,704 571 2,058 6 1,979 19 Commercial 1,568 1,568 398 1,383 29 1,634 404 Real estate: Construction Commercial 7,285 7,285 139 7,398 799 7,804 2,176 Residential 3,047 3,203 34 3,125 64 3,195 204 Consumer Total $ 11,900 $ 12,056 $ 571 $ 11,906 $ 892 $ 12,633 $ 2,784 For the Year Ended December 31, 2017 Recorded Unpaid Related Average Interest 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 This Quarter Year-to-Date September 30, 2017 Recorded Unpaid Related Average Interest Average Interest With no related allowance: Commercial $ 724 $ 724 $ 798 $ 8 $ 803 $ 23 Real estate: Construction Commercial 2,753 2,753 2,760 32 2,992 90 Residential 2,274 2,292 2,304 28 2,408 87 Consumer Total 5,751 5,769 5,862 68 6,203 200 With an allowance recorded: Commercial 75 75 $ 25 78 76 1 Real estate: Construction Commercial 918 918 194 820 8 798 20 Residential 188 326 54 189 2 126 6 Consumer Total 1,181 1,319 273 1,087 10 1,000 27 Commercial 799 799 25 876 8 879 24 Real estate: Construction Commercial 3,671 3,671 194 3,580 40 3,790 110 Residential 2,462 2,618 54 2,493 30 2,534 93 Consumer Total $ 6,932 $ 7,088 $ 273 $ 6,949 $ 78 $ 7,203 $ 227 For the three and nine months ended September 30, interest income related to impaired loans, would have increased by $23 and $79 in 2018 and $23 and $77 in 2017 had the loans been current and the terms of the loans not been modified. 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 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. Included in the commercial loan and commercial and residential real estate categories are troubled debt restructurings that are classified as impaired. Troubled debt restructurings totaled $4,766 at September 30, 2018, $5,606 at December 31, 2017 and $5,793 at September 30, 2017. There were no loans modified as troubled debt restructuring for the three and nine months ended September 30, 2018. There were no loans modified as troubled debt restructuring for the three months ended September 30, 2017 and two residential real estate loans modified as troubled debt restructuring for the nine months ended September 30, 2017 in the amount of $138. During the three months ended September 30, 2018, there were no defaults on loans restructured and six defaults on loans restructured totaling $1,474 during the nine months ended September 30, 2018. During the three months ended September 30, 2017, there was one default on loans restructured within the last twelve months. During the nine months ended September 30, 2017, there were five defaults on loan restructured within the last twelve months totaling $1,374. 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, As a result of the merger with CBT, effective October 1, 2017, the Bank identified 37 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 non-accretable non-accretable non-accretable 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 September 30, 2018 and December 31, 2017 were as follows: September 30, December 31, Credit impaired purchased loans evaluated individually for incurred credit losses: Outstanding balance $ 9,853 $ 16,803 Carrying Amount 4,951 8,512 Other purchased loans evaluated collectively for incurred credit losses: Outstanding balance 339,136 421,620 Carrying Amount 337,280 418,146 Total Purchased Loans: Outstanding balance 348,989 438,423 Carrying Amount $ 342,231 $ 426,658 As of the indicated dates, the changes in the accretable discount related to the purchased credit impaired loans were as follows: Three Months Ended Nine Months Ended 2018 2017 2018 2017 Balance – beginning of period $ 1,439 $ 323 $ 2,129 $ 370 Accretion recognized during the period (819 ) (21 ) (2,673 ) (44 ) Net reclassification from non-accretable 208 11 1,372 (13 ) Balance – end of period $ 828 $ 313 $ 828 $ 313 The Company is a party to financial instruments with off-balance Unused commitments at September 30, 2018, totaled $137,801 consisting of $71,813 in commitments to extend credit, $60,276 in unused portions of lines of credit and $5,712 in standby letters of credit. Due to fixed maturity dates, specified conditions within these instruments, and the ultimate needs of our customers, many will expire without being drawn upon. We believe that amounts actually drawn upon can be funded in the normal course of operations and therefore, do not represent a significant liquidity risk to us. In comparison, unused commitments, at December 31, 2017, totaled $129,734, consisting of $52,706 in commitments to extend credit, $72,157 in unused portions of lines of credit and $4,871 in standby letters of credit.

Other assets

Other assets	9 Months Ended
	Sep. 30, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other assets	6. Other assets: The components of other assets at September 30, 2018 and December 31, 2017 are summarized as follows: September 30, December 31, Other real estate owned $ 668 $ 236 Bank owned life insurance 29,670 29,065 Restricted equity securities 1,262 1,306 Deferred tax assets 6,612 7,949 Other assets 4,981 5,147 Total $ 43,193 $ 43,703 As a member of the Federal Home Loan Bank of Pittsburgh (“FHLB”) and Atlantic Community Bankers Bank (“ACBB”), the Company is required to purchase and hold stock in these entities to satisfy membership and borrowing requirements. These restricted equity securities can only be redeemed or sold at their par value and only to the respective issuing institution or to another member institution. The Company records these non-marketable non-marketable

Fair value estimates

Fair value estimates	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair value estimates	7. Fair value estimates: 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. An asset’s or liability’s placement in the fair value hierarchy is based on the lowest level of input that is significant to the fair value estimate. The following methods and assumptions were used by the Company to calculate fair values and related carrying amounts of assets and liabilities measured at fair value on a recurring basis: Investment securities: Assets and liabilities measured at fair value on a recurring basis at September 30, 2018 and December 31, 2017 are summarized as follows: Fair Value Measurement Using September 30, 2018 Amount Quoted Prices in Significant Significant State and Municipals: Taxable $ 33,524 $ 33,524 Tax-exempt 13,301 13,301 Mortgage-backed securities: U.S. Government agencies 25,211 25,211 U.S. Government-sponsored enterprises 16,158 16,158 Corporate debt obligations 8,908 8,908 Total $ 97,102 $ 97,102 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 September 30, 2018 and December 31, 2017 are summarized as follows: Fair Value Measurement Using September 30, 2018 Amount (Level 1) (Level 2) (Level 3) Other real estate owned $ 668 $ 668 Impaired loans, net of related allowance 1,995 1,995 Total $ 2,663 $ 2,663 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 Fair values of impaired loans are 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. Fair value of other real estate owned 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 following tables present additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company utilized Level 3 inputs to determine fair value at September 30, 2018 and December 31, 2017: Quantitative Information about Level 3 Fair Value Measurements September 30, 2018 Fair Value Valuation Techniques Unobservable Input Range Other real estate owned $ 668 Appraisal of collateral Appraisal adjustments 0.0% to 69.0% (7.7)% Liquidation expenses 0.0% to 7.0% (7.0)% Impaired loans $ 1,995 Appraisal of collateral Appraisal adjustments 0.0% to 0.0% (0.0)% Liquidation expenses 0.0% to 25.0% (9.5)% Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Valuation Techniques Unobservable Input Range 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 September 30, 2018 and December 31, 2017 and their placement within the fair value hierarchy are as follows: Fair Value Hierarchy September 30, 2018 Carrying Fair Value Quoted Prices in Significant Significant Financial assets: Cash and cash equivalents $ 56,815 $ 56,815 $ 56,815 Investment securities 97,102 97,102 $ 97,102 Loans held for sale 598 598 598 Net loans (1) 909,057 898,735 $ 898,735 Accrued interest receivable 3,066 3,066 776 2,290 Restricted equity securities 1,262 1,262 1,262 Financial liabilities: Deposits $ 1,020,764 $ 1,014,260 $ 1,014,260 Long-term debt 13,019 14,168 14,168 Accrued interest payable 503 503 503 Fair Value Hierarchy December 31, 2017 Carrying Fair Value Quoted Prices in Significant Significant 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 (1) 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 debt 13,233 14,634 14,634 Accrued interest payable 468 468 468 (1) The carrying amount is net of unearned income and the allowance for loan losses in accordance with the adoption of ASU No. 2016-01

Revenue recognition

Revenue recognition	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue recognition	Note 8. Revenue recognition: On January 1, 2018, the Company adopted ASU No. 2014-09 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 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 non-Company 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 The following presents noninterest income, segregated by revenue streams in-scope out-of-scope Three Months Ended Nine Months Ended September 30, 2018 2018 2017 2018 2017 Noninterest Income: In-scope Service charges, fees and commissions $ 1,267 $ 270 $ 4,146 $ 899 Trust and asset management 425 210 1,243 723 Noninterest income (in-scope 1,692 480 5,389 1,622 Noninterest income (out-of-scope 362 355 1,151 794 Total noninterest income $ 2,054 $ 835 $ 6,540 $ 2,416 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 month-end 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.

Summary of significant accoun_2

Summary of significant accounting policies (Policies)	9 Months Ended
	Sep. 30, 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 for 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-Q Riverview Bank, with 30 full service offices and three 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, Blaire, Centre, Clearfield, Dauphin, Huntingdon, Lebanon, Lycoming, Northumberland, Perry, Schuylkill and Somerset Counties in Pennsylvania.
Basis of presentation	Basis of presentation: The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP’) for interim financial information and with the instructions to Form 10-Q Regulation S-X. 10-K, 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, the determination of other-than-temporary impairment losses on securities and impairment of goodwill. Actual results could differ from those estimates.
Recent Accounting Standards	Recent Accounting Standards In January 2016, the Financial Accounting Standards Board, (“FASB”) issued ASU No. 2016-01, available-for-sale 2016-01 In February 2016, the FASB issued ASU No. 2016-02, 2016-02, right-of-use 2016-02 In June 2016, the FASB ASU No. 2016-13, 2016-13 requires 2016-13 available-for-sale In August 2016, the FASB issued ASU No. 2016-15, In December 2016, the FASB issued ASU No. 2016-20, ASU 2016-20 ASU 2014-09, 2014-09 2014-09 ASU 2016-20 2014-09 In January 2017, FASB issued ASU No. 2017-01, No. 2017-01 In January 2017, the FASB issued ASU No. 2017-03, 2014-09, 2016-02 2016-13 2014-01, In January 2017, FASB issued ASU No. 2017-04, In February 2017, the FASB issued ASU No. 2017-05, No. 2017-05 In March 2017, the FASB issued ASU No. 2017-07, No. 2017-07 In March 2017, FASB issued ASU No. 2017-08, 2017-08 In May 2017, the FASB issued ASU No. 2017-09, No. 2017-09 In August 2017, FASB issued ASU No. 2017-12, In September 2017, the FASB issued ASU No. 2017-13, No. 2014-09, No. 2016-02, 2017-13 In November 2017, the FASB issued ASU No. 2017-14 No. 33-10403, No. 2017-14 In February 2018, the FASB issued ASU No. 2018-02, No. 2018-02 In February 2018, the FASB issued ASU No. 2018-03, 825-10): No. 2016-01, No. 2018-03 In March 2018, the FASB has issued ASU No. 2018-05, No. 2018-05 In May 2018, the FASB issued ASU No. 2018-06, 942-740, No. 2018-06 In July 2018, the FASB issued ASU No. 2018-10, In July 2018, the FASB issued ASU No. 2018-11, 2016-02, In August 2018, the FASB issued ASU 2018-13, In August 2018, the FASB issued ASU No. 2018-14, 715-20)—Disclosure 715-20

Other comprehensive income (l_2

Other comprehensive income (loss) (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Summary of Components of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive income (loss) included in stockholders’ equity at September 30, 2018 and December 31, 2017 is as follows: September 30, December 31, Net unrealized loss on investment securities available-for-sale $ (2,710 ) $ (1,131 ) Related income taxes (569 ) (238 ) Net of income taxes (2,141 ) (893 ) Benefit plan adjustments (869 ) (869 ) Related income taxes (183 ) (183 ) Net of income taxes (686 ) (686 ) Accumulated other comprehensive income (loss) $ (2,827 ) $ (1,579 )
Schedule of Other Comprehensive Income (Loss) and Related Tax Effects	Other comprehensive income (loss) and related tax effects for the three and nine months ended September 30, 2018 and 2017 is as follows: Three months ended September 30, 2018 2017 Unrealized gain (loss) on investment securities available-for-sale $ (576 ) $ (50 ) Net (gain) loss on the sale of investment securities available-for-sale (1) (43 ) Other comprehensive income (loss) before taxes (576 ) (93 ) Income tax expense (benefit) (121 ) (32 ) Other comprehensive income (loss) $ (455 ) $ (61 ) Nine months ended September 30, 2018 2017 Unrealized gain (loss) on investment securities available-for-sale $ (1,539 ) $ 1,708 Net (gain) loss on the sale of investment securities available-for-sale (1) (40 ) (106 ) Other comprehensive income (loss) before taxes (1,579 ) 1,602 Income tax expense (benefit) (331 ) 544 Other comprehensive income (loss) $ (1,248 ) $ 1,058 (1) Represents amounts reclassified out of accumulated other comprehensive income and included in gains on sale of investment securities on the consolidated statements of income and comprehensive income.

Earnings per share (Tables)

Earnings per share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
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 three and nine months ended September 30, 2018 and 2017: Three months ended September 30, 2018 2017 Numerator: Net income $ 2,788 $ 401 Dividends on preferred stock Net income available to common stockholders $ 2,788 $ 401 Undistributed loss allocated to preferred stockholders Income allocated to common stockholders $ 2,788 $ 401 Denominator: Basic 9,100,616 4,880,676 Dilutive options 56,315 64,780 Diluted 9,156,931 4,945,456 Earnings per share: Basic $ 0.30 $ 0.08 Diluted $ 0.30 $ 0.08 Nine months ended September 30, 2018 2017 Numerator: Net income $ 8,386 $ 13 Dividends on preferred stock (371 ) Net income (loss) available to common stockholders $ 8,386 $ (358 ) Undistributed loss allocated to preferred stockholders 475 Income allocated to common stockholders $ 8,386 $ 117 Denominator: Basic 9,089,636 4,002,165 Dilutive options 53,405 58,648 Diluted 9,143,041 4,060,813 Earnings per share: Basic $ 0.92 $ 0.03 Diluted $ 0.92 $ 0.03

Investment securities (Tables)

Investment securities (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2018 Amortized Gross Gross Fair State and municipals: Taxable $ 34,769 $ 139 $ 1,384 $ 33,524 Tax-exempt 13,583 4 286 13,301 Mortgage-backed securities: U.S. Government agencies 25,302 95 186 25,211 U.S. Government-sponsored enterprises 16,639 15 496 16,158 Corporate debt obligations 9,519 611 8,908 Total $ 99,812 $ 253 $ 2,963 $ 97,102 December 31, 2017 Amortized Gross Gross Fair 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 September 30, 2018 Fair Within one year $ 3,470 After one but within five years 4,779 After five but within ten years 13,207 After ten years 34,277 55,733 Mortgage-backed securities 41,369 Total $ 97,102
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 September 30, 2018 and December 31, 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 September 30, 2018 Fair Unrealized Fair Unrealized Fair Unrealized State and municipals: Taxable $ 5,334 $ 113 $ 20,682 $ 1,271 $ 26,016 $ 1,384 Tax-exempt 9,932 181 2,795 105 12,727 286 Mortgage-backed securities: U.S. Government agencies 7,679 134 944 52 8,623 186 U.S. Government-sponsored enterprises 8,283 101 6,527 395 14,810 496 Corporate debt obligation 8,908 611 8,908 611 Total $ 31,228 $ 529 $ 39,856 $ 2,434 $ 71,084 $ 2,963 Less Than 12 Months 12 Months or More Total December 31, 2017 Fair Unrealized Fair Unrealized Fair Unrealized 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 obligation 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)	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Schedule of Loans Outstanding	The major classifications of loans outstanding, net of deferred loan origination fees and costs at September 30, 2018 and December 31, 2017 are summarized as follows. Net deferred loan costs were $1,019 and $863 at September 30, 2018 and December 31, 2017. September 30, December 31, Commercial $ 128,265 $ 140,116 Real estate: Construction 36,478 34,405 Commercial 510,840 526,230 Residential 227,132 240,626 Consumer 12,814 14,594 Total $ 915,529 $ 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 three and nine months ended September 30, 2018 and 2017 are summarized as follows: Real Estate September 30, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance, July 1, 2018 $ 1,026 $ 249 $ 3,606 $ 1,295 $ 36 $ 189 $ 6,401 Charge-offs (23 ) (33 ) (133 ) (189 ) Recoveries 2 1 8 24 35 Provisions 411 61 (212 ) 26 120 (181 ) 225 Ending balance $ 1,416 $ 310 $ 3,395 $ 1,296 $ 47 $ 8 $ 6,472 Real Estate September 30, 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 (193 ) (93 ) (295 ) (581 ) Recoveries 10 5 29 88 132 Provisions 393 (69 ) 427 20 217 (373 ) 615 Ending balance $ 1,416 $ 310 $ 3,395 $ 1,296 $ 47 $ 8 $ 6,472 Real Estate September 30, 2017 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Beginning Balance, July 1, 2017 $ 757 $ 192 $ 2,965 $ 828 $ 49 $ 43 $ 4,834 Charge-offs (24 ) (18 ) (42 ) Recoveries 1 1 2 Provisions 421 (3 ) (56 ) 127 (4 ) 125 610 Ending balance $ 1,155 $ 189 $ 2,909 $ 937 $ 46 $ 168 $ 5,404 Real Estate September 30, 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 (34 ) (34 ) (7 ) (75 ) Recoveries 1 3 7 2 13 Provisions 559 29 796 175 7 $ 168 1,732 Ending balance $ 1,155 $ 189 $ 2,909 $ 937 $ 46 $ 168 $ 5,404 The allocation of the allowance for loan losses and the related loans by major classifications of loans at September 30, 2018 and December 31, 2017 is summarized as follows: Real Estate September 30, 2018 Commercial Construction Commercial Residential Consumer Unallocated Total Allowance for loan losses: Ending balance $ 1,416 $ 310 $ 3,395 $ 1,296 $ 47 $ 8 $ 6,472 Ending balance: individually evaluated for impairment 398 139 34 571 Ending balance: collectively evaluated for impairment 1,018 310 3,256 1,262 47 8 5,901 Ending balance: purchased credit impaired loans $ $ $ $ $ $ Loans receivable: Ending balance $ 128,265 $ 36,478 $ 510,840 $ 227,132 $ 12,814 $ 915,529 Ending balance: individually evaluated for impairment 1,280 3,413 2,256 6,949 Ending balance: collectively evaluated for impairment 126,697 36,478 503,555 224,085 12,814 903,629 Ending balance: purchased credit impaired loans $ 288 $ $ 3,872 $ 791 $ $ 4,951 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 September 30, 2018 and December 31, 2017: September 30, 2018 Pass Special Substandard Doubtful Total Commercial $ 111,392 $ 9,423 $ 7,450 $ 128,265 Real estate: Construction 35,770 1 707 36,478 Commercial 489,199 8,805 12,836 510,840 Residential 221,778 2,524 2,830 227,132 Consumer 12,814 12,814 Total $ 870,953 $ 20,753 $ 23,823 $ 915,529 December 31, 2017 Pass Special 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 September 30, 2018 and December 31, 2017. Purchase credit impaired (“PCI”) loans are excluded from the aging and nonaccrual loan schedules. Accrual Loans September 30, 2018 30-59 Days 60-89 Days 90 or More Total Past Current Nonaccrual Total Loans Commercial $ 187 $ 113 $ 300 $ 126,505 $ 1,172 $ 127,977 Real estate: Construction 373 373 36,105 36,478 Commercial 379 520 $ 99 998 505,260 710 506,968 Residential 1,618 367 106 2,091 223,352 898 226,341 Consumer 107 48 20 175 12,639 12,814 Total $ 2,664 $ 1,048 $ 225 $ 3,937 $ 903,861 $ 2,780 $ 910,578 Purchased credit impaired loans 4,951 Total Loans $ 915,529 Accrual Loans December 31, 2017 30-59 Days 60-89 Days 90 or More Total Past Current Nonaccrual 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 three and nine months ended September 30, 2018 and 2017, and as of and for the year ended, December 31, 2017 by major loan classification: This Quarter Year-to-Date September 30, 2018 Recorded Unpaid Related Average Interest Average Interest With no related allowance: Commercial $ 288 $ 288 $ $ 327 $ 27 $ 562 $ 399 Real estate: Construction Commercial 6,181 6,181 6,580 795 7,081 2,165 Residential 2,865 2,883 2,941 64 3,011 201 Consumer Total 9,334 9,352 9,848 886 10,654 2,765 With an allowance recorded: Commercial 1,280 1,280 398 1,056 2 1,072 5 Real estate: Construction Commercial 1,104 1,104 139 818 4 723 11 Residential 182 320 34 184 184 3 Consumer Total 2,566 2,704 571 2,058 6 1,979 19 Commercial 1,568 1,568 398 1,383 29 1,634 404 Real estate: Construction Commercial 7,285 7,285 139 7,398 799 7,804 2,176 Residential 3,047 3,203 34 3,125 64 3,195 204 Consumer Total $ 11,900 $ 12,056 $ 571 $ 11,906 $ 892 $ 12,633 $ 2,784 For the Year Ended December 31, 2017 Recorded Unpaid Related Average Interest 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 This Quarter Year-to-Date September 30, 2017 Recorded Unpaid Related Average Interest Average Interest With no related allowance: Commercial $ 724 $ 724 $ 798 $ 8 $ 803 $ 23 Real estate: Construction Commercial 2,753 2,753 2,760 32 2,992 90 Residential 2,274 2,292 2,304 28 2,408 87 Consumer Total 5,751 5,769 5,862 68 6,203 200 With an allowance recorded: Commercial 75 75 $ 25 78 76 1 Real estate: Construction Commercial 918 918 194 820 8 798 20 Residential 188 326 54 189 2 126 6 Consumer Total 1,181 1,319 273 1,087 10 1,000 27 Commercial 799 799 25 876 8 879 24 Real estate: Construction Commercial 3,671 3,671 194 3,580 40 3,790 110 Residential 2,462 2,618 54 2,493 30 2,534 93 Consumer Total $ 6,932 $ 7,088 $ 273 $ 6,949 $ 78 $ 7,203 $ 227
Summary of Unpaid Principal Balances and Related Carrying Amounts of Union Acquired Loans	The unpaid principal balances and the related carrying amount of acquired loans as of September 30, 2018 and December 31, 2017 were as follows: September 30, December 31, Credit impaired purchased loans evaluated individually for incurred credit losses: Outstanding balance $ 9,853 $ 16,803 Carrying Amount 4,951 8,512 Other purchased loans evaluated collectively for incurred credit losses: Outstanding balance 339,136 421,620 Carrying Amount 337,280 418,146 Total Purchased Loans: Outstanding balance 348,989 438,423 Carrying Amount $ 342,231 $ 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: Three Months Ended Nine Months Ended 2018 2017 2018 2017 Balance – beginning of period $ 1,439 $ 323 $ 2,129 $ 370 Accretion recognized during the period (819 ) (21 ) (2,673 ) (44 ) Net reclassification from non-accretable 208 11 1,372 (13 ) Balance – end of period $ 828 $ 313 $ 828 $ 313

Other assets (Tables)

Other assets (Tables)	9 Months Ended
	Sep. 30, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Components of Other Assets	The components of other assets at September 30, 2018 and December 31, 2017 are summarized as follows: September 30, December 31, Other real estate owned $ 668 $ 236 Bank owned life insurance 29,670 29,065 Restricted equity securities 1,262 1,306 Deferred tax assets 6,612 7,949 Other assets 4,981 5,147 Total $ 43,193 $ 43,703

Fair value estimates (Tables)

Fair value estimates (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2018 and December 31, 2017 are summarized as follows: Fair Value Measurement Using September 30, 2018 Amount Quoted Prices in Significant Significant State and Municipals: Taxable $ 33,524 $ 33,524 Tax-exempt 13,301 13,301 Mortgage-backed securities: U.S. Government agencies 25,211 25,211 U.S. Government-sponsored enterprises 16,158 16,158 Corporate debt obligations 8,908 8,908 Total $ 97,102 $ 97,102 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 September 30, 2018 and December 31, 2017 are summarized as follows: Fair Value Measurement Using September 30, 2018 Amount (Level 1) (Level 2) (Level 3) Other real estate owned $ 668 $ 668 Impaired loans, net of related allowance 1,995 1,995 Total $ 2,663 $ 2,663 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 tables present additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company utilized Level 3 inputs to determine fair value at September 30, 2018 and December 31, 2017: Quantitative Information about Level 3 Fair Value Measurements September 30, 2018 Fair Value Valuation Techniques Unobservable Input Range Other real estate owned $ 668 Appraisal of collateral Appraisal adjustments 0.0% to 69.0% (7.7)% Liquidation expenses 0.0% to 7.0% (7.0)% Impaired loans $ 1,995 Appraisal of collateral Appraisal adjustments 0.0% to 0.0% (0.0)% Liquidation expenses 0.0% to 25.0% (9.5)% Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Valuation Techniques Unobservable Input Range 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	The carrying and fair values of the Company’s financial instruments at September 30, 2018 and December 31, 2017 and their placement within the fair value hierarchy are as follows: Fair Value Hierarchy September 30, 2018 Carrying Fair Value Quoted Prices in Significant Significant Financial assets: Cash and cash equivalents $ 56,815 $ 56,815 $ 56,815 Investment securities 97,102 97,102 $ 97,102 Loans held for sale 598 598 598 Net loans (1) 909,057 898,735 $ 898,735 Accrued interest receivable 3,066 3,066 776 2,290 Restricted equity securities 1,262 1,262 1,262 Financial liabilities: Deposits $ 1,020,764 $ 1,014,260 $ 1,014,260 Long-term debt 13,019 14,168 14,168 Accrued interest payable 503 503 503 Fair Value Hierarchy December 31, 2017 Carrying Fair Value Quoted Prices in Significant Significant 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 (1) 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 debt 13,233 14,634 14,634 Accrued interest payable 468 468 468 (1) The carrying amount is net of unearned income and the allowance for loan losses in accordance with the adoption of ASU No. 2016-01

Revenue recognition (Tables)

Revenue recognition (Tables)	9 Months Ended
	Sep. 30, 2018
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 out-of-scope Three Months Ended Nine Months Ended September 30, 2018 2018 2017 2018 2017 Noninterest Income: In-scope Service charges, fees and commissions $ 1,267 $ 270 $ 4,146 $ 899 Trust and asset management 425 210 1,243 723 Noninterest income (in-scope 1,692 480 5,389 1,622 Noninterest income (out-of-scope 362 355 1,151 794 Total noninterest income $ 2,054 $ 835 $ 6,540 $ 2,416

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	Oct. 01, 2017	Sep. 30, 2018Office	Dec. 31, 2017USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of full service offices | Office		30
Number of limited purpose offices | Office		3
Retained Earnings [Member]
Summary Of Significant Accounting Policies [Line Items]
Tax Cuts and Jobs Act reclassification from other comprehensive income to retained earnings | $			$ 259
Accumulated Other Comprehensive Income (Loss) [Member]
Summary Of Significant Accounting Policies [Line Items]
Tax Cuts and Jobs Act reclassification from other comprehensive income to retained earnings | $			$ (259)
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

Other comprehensive income (l_3

Other comprehensive income (loss) - Summary of Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Equity [Abstract]
Net unrealized loss on investment securities available-for-sale	$ (2,710)	$ (1,131)
Related income taxes	(569)	(238)
Net of income taxes	(2,141)	(893)
Benefit plan adjustments	(869)	(869)
Related income taxes	(183)	(183)
Net of income taxes	(686)	(686)
Accumulated other comprehensive income (loss)	$ (2,827)	$ (1,579)

Other comprehensive income (l_4

Other comprehensive income (loss) - Schedule of Other Comprehensive Income (Loss) and Related Tax Effects (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Comprehensive Income (Loss), Tax [Abstract]
Unrealized gain (loss) on investment securities available-for-sale		$ (576)	$ (50)	$ (1,539)	$ 1,708
Net (gain) loss on the sale of investment securities available-for-sale	[1]		(43)	(40)	(106)
Other comprehensive income (loss) before taxes		(576)	(93)	(1,579)	1,602
Income tax expense (benefit)		(121)	(32)	(331)	544
Other comprehensive income (loss)		$ (455)	$ (61)	$ (1,248)	$ 1,058
[1]	Represents amounts reclassified out of accumulated other comprehensive income and included in gains on sale of investment securities on the consolidated statements of income and comprehensive income.

Earnings per share - Computatio

Earnings per share - Computation of Earnings per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income	$ 2,788	$ 401	$ 8,386	$ 13
Dividends on preferred stock				(371)
Net income (loss) available to common stockholders	2,788	401	8,386	(358)
Undistributed loss allocated to preferred stockholders				475
Income allocated to common stockholders	$ 2,788	$ 401	$ 8,386	$ 117
Denominator:
Basic	9,100,616	4,880,676	9,089,636	4,002,165
Dilutive options	56,315	64,780	53,405	58,648
Diluted	9,156,931	4,945,456	9,143,041	4,060,813
Basic	$ 0.30	$ 0.08	$ 0.92	$ 0.03
Diluted	$ 0.30	$ 0.08	$ 0.92	$ 0.03

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) $ / shares in Units, $ in Millions	Jun. 22, 2017	Jan. 20, 2017USD ($)$ / sharesshares	Sep. 30, 2018$ / sharesshares	Sep. 30, 2017shares	Sep. 30, 2018$ / sharesshares	Sep. 30, 2017shares	Dec. 31, 2017$ / shares	Apr. 20, 2017USD ($)
Earnings Per Share [Line Items]
Average outstanding stock options excluded from diluted earnings per share | shares			0	25,300	0	25,300
Common stock, no par value | $ / shares
Shares issued | shares						269,885
Assets covered for the execution of a definitive business combination agreement | $								$ 1,200
Series A Preferred Stock [Member]
Earnings Per Share [Line Items]
Series A Preferred stock converted into non voting common stock	1
Private Placement [Member]
Earnings Per Share [Line Items]
Sale of common and preferred equity | $		$ 17
Common stock, no par value | $ / shares
Private Placement [Member] | Common Stock [Member]
Earnings Per Share [Line Items]
Shares issued | shares		269,885
Stock price per share | $ / shares		$ 10.50
Private Placement [Member] | Convertible Perpetual Stock [Member]
Earnings Per Share [Line Items]
Shares issued | shares		1,348,809
Stock price per share | $ / shares		$ 10.50

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	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 99,812	$ 94,332
Gross Unrealized Gains	253	403
Gross Unrealized Losses	2,963	1,534
Fair Value	97,102	93,201
Taxable [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	34,769	35,352
Gross Unrealized Gains	139	334
Gross Unrealized Losses	1,384	684
Fair Value	33,524	35,002
Tax-Exempt [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	13,583	16,325
Gross Unrealized Gains	4	47
Gross Unrealized Losses	286	64
Fair Value	13,301	16,308
Mortgage-Backed Securities - U.S. Government Agencies [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	25,302	22,908
Gross Unrealized Gains	95	3
Gross Unrealized Losses	186	94
Fair Value	25,211	22,817
Mortgage-backed Securities - U.S. Government-sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	16,639	10,218
Gross Unrealized Gains	15	19
Gross Unrealized Losses	496	148
Fair Value	16,158	10,089
Corporate Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,519	9,529
Gross Unrealized Losses	611	544
Fair Value	$ 8,908	$ 8,985

Investment Securities - Sched_2

Investment Securities - Schedule of Debt Securities Classified Available-for-Sale Maturity Distribution of Fair Value (Detail) $ in Thousands	Sep. 30, 2018USD ($)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Within one year, Fair Value	$ 3,470
Available-for-sale securities, After one but within five years, Fair Value	4,779
Available-for-sale securities, After five but within ten years, Fair Value	13,207
Available-for-sale securities, After ten years, Fair Value	34,277
Available-for-sale securities, Single maturity, Fair Value	55,733
Total available-for-sale securities, Fair Value	97,102
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities, Without single maturity, Fair Value	$ 41,369

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	3 Months Ended
	Sep. 30, 2018USD ($)Securities	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)Securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities pledged as collateral, carrying value | $	$ 64,719,000		$ 93,201,000
Available-for-sale securities in unrealized loss position, number of securities	89		88
Other than temporary impairment losses | $	$ 0	$ 0
Taxable [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in unrealized loss position, number of securities	42		34
Available-for-sale securities in unrealized loss position for twelve months or more, number of securities	14		25
Tax-Exempt [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in unrealized loss position, number of securities			21
Available-for-sale securities in unrealized loss position for twelve months or more, number of securities	5
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in unrealized loss position, number of securities	18		29
Available-for-sale securities in unrealized loss position for twelve months or more, number of securities	11		5
Corporate Debt Obligations [Member]
Debt Securities, Available-for-sale [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
Tax-exempt Municipal Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in unrealized loss position, number of securities	25

Investment Securities - Sched_3

Investment Securities - Schedule of Fair Value Gross Unrealized Losses of Investment Securities Unrealized Losses (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	$ 31,228	$ 40,103
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	529	404
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	39,856	29,737
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	2,434	1,130
Available-for-sale securities in a continuous loss position, Fair Value	71,084	69,840
Available-for-sale securities in a continuous loss position, Unrealized Losses	2,963	1,534
Taxable [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	5,334	4,757
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	113	30
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	20,682	20,185
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	1,271	654
Available-for-sale securities in a continuous loss position, Fair Value	26,016	24,942
Available-for-sale securities in a continuous loss position, Unrealized Losses	1,384	684
Tax-Exempt [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	9,932	10,506
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	181	64
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	2,795
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	105
Available-for-sale securities in a continuous loss position, Fair Value	12,727	10,506
Available-for-sale securities in a continuous loss position, Unrealized Losses	286	64
Mortgage-Backed Securities - U.S. Government Agencies [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	7,679	16,746
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	134	87
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	944	193
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	52	7
Available-for-sale securities in a continuous loss position, Fair Value	8,623	16,939
Available-for-sale securities in a continuous loss position, Unrealized Losses	186	94
Mortgage-backed Securities - U.S. Government-sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Fair Value	8,283	4,294
Available-for-sale securities in a continuous loss position, Less Than 12 Months, Unrealized Losses	101	23
Available-for-sale securities in a continuous loss position, More Than 12 Months, Fair Value	6,527	4,174
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	395	125
Available-for-sale securities in a continuous loss position, Fair Value	14,810	8,468
Available-for-sale securities in a continuous loss position, Unrealized Losses	496	148
Corporate Debt Obligations [Member]
Debt Securities, Available-for-sale [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	8,908	5,185
Available-for-sale securities in a continuous loss position, More Than 12 Months, Unrealized Losses	611	344
Available-for-sale securities in a continuous loss position, Fair Value	8,908	8,985
Available-for-sale securities in a continuous loss position, Unrealized Losses	$ 611	$ 544

Loans, Net and Allowance for _3

Loans, Net and Allowance for Loan Losses - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018USD ($)Contract	Sep. 30, 2017USD ($)Contract	Sep. 30, 2018USD ($)Contract	Sep. 30, 2017USD ($)Contract	Dec. 31, 2017USD ($)	Mar. 31, 2018USD ($)	Oct. 01, 2017Loan	Dec. 31, 2015Loan	Nov. 01, 2013Loan
Financing Receivable, Impaired [Line Items]
Deferred loan fees, net	$ 1,019		$ 1,019		$ 863
Interest income, related to impaired loans	23	$ 23	79	$ 77
Troubled debt restructurings, amount	$ 4,766	$ 5,793	$ 4,766	$ 5,793	5,606
Unused Commitments					129,734	$ 137,801
Commitment to Extend Credit [Member]
Financing Receivable, Impaired [Line Items]
Unused Commitments					52,706	71,813
Unused Portions of Lines of Credit [Member]
Financing Receivable, Impaired [Line Items]
Unused Commitments					72,157	60,276
Financial Standby Letter of Credit [Member]
Financing Receivable, Impaired [Line Items]
Unused Commitments					4,871	$ 5,712
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
Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
Troubled debt restructuring, Number of contract	0	0	0	2,000
Troubled debt restructuring, amount				$ 138
Real Estate Residential [Member] | Financing Receivables, Greater than 30 Days Past Due [Member]
Financing Receivable, Impaired [Line Items]
Subsequently defaulted number of contract | Contract	0	1,000	6,000	5,000
Financing receivable modifications subsequent default recorded investment			$ 1,474		$ 1,374

Loans, Net and Allowance for _4

Loans, Net and Allowance for Loan Losses - Schedule of Loans Outstanding (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Commercial	$ 128,265	$ 140,116
Construction	36,478	34,405
Commercial	510,840	526,230
Residential	227,132	240,626
Consumer	12,814	14,594
Total	$ 915,529	$ 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	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	$ 6,401	$ 4,834	$ 6,306	$ 3,732
Allowance for Loan Losses, Charge-offs	(189)	(42)	(581)	(75)
Allowance for Loan Losses, Recoveries	35	2	132	13
Allowance for Loan Losses, Provision	225	610	615	1,732
Allowance for Loan Losses, Ending balance	6,472	5,404	6,472	5,404
Ending balance: individually evaluated for impairment	571		571		$ 224
Ending balance: collectively evaluated for impairment	5,901		5,901		6,082
Ending balance: purchased credit impaired loans	0		0		0
Ending balance	915,529		915,529		955,971
Ending balance: individually evaluated for impairment	6,949		6,949		6,247
Ending balance: collectively evaluated for impairment	903,629		903,629		941,212
Ending balance: purchased credit impaired loans	4,951		4,951		8,512
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	1,026	757	1,206	629
Allowance for Loan Losses, Charge-offs	(23)	(24)	(193)	(34)
Allowance for Loan Losses, Recoveries	2	1	10	1
Allowance for Loan Losses, Provision	411	421	393	559
Allowance for Loan Losses, Ending balance	1,416	1,155	1,416	1,155
Ending balance: individually evaluated for impairment	398		398		56
Ending balance: collectively evaluated for impairment	1,018		1,018		1,150
Ending balance: purchased credit impaired loans	0		0		0
Ending balance	128,265		128,265		140,116
Ending balance: individually evaluated for impairment	1,280		1,280		777
Ending balance: collectively evaluated for impairment	126,697		126,697		138,824
Ending balance: purchased credit impaired loans	288		288		515
Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	249	192	379	160
Allowance for Loan Losses, Provision	61	(3)	(69)	29
Allowance for Loan Losses, Ending balance	310	189	310	189
Ending balance: collectively evaluated for impairment	310		310		379
Ending balance: purchased credit impaired loans	0		0		0
Ending balance	36,478		36,478		34,405
Ending balance: collectively evaluated for impairment	36,478		36,478		34,405
Real Estate Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	3,606	2,965	2,963	2,110
Allowance for Loan Losses, Recoveries	1		5	3
Allowance for Loan Losses, Provision	(212)	(56)	427	796
Allowance for Loan Losses, Ending balance	3,395	2,909	3,395	2,909
Ending balance: individually evaluated for impairment	139		139		76
Ending balance: collectively evaluated for impairment	3,256		3,256		2,887
Ending balance: purchased credit impaired loans	0		0		0
Ending balance	510,840		510,840		526,230
Ending balance: individually evaluated for impairment	3,413		3,413		2,988
Ending balance: collectively evaluated for impairment	503,555		503,555		516,300
Ending balance: purchased credit impaired loans	3,872		3,872		6,942
Real Estate Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	1,295	828	1,340	789
Allowance for Loan Losses, Charge-offs	(33)	(18)	(93)	(34)
Allowance for Loan Losses, Recoveries	8		29	7
Allowance for Loan Losses, Provision	26	127	20	175
Allowance for Loan Losses, Ending balance	1,296	937	1,296	937
Ending balance: individually evaluated for impairment	34		34		92
Ending balance: collectively evaluated for impairment	1,262		1,262		1,248
Ending balance: purchased credit impaired loans	0		0		0
Ending balance	227,132		227,132		240,626
Ending balance: individually evaluated for impairment	2,256		2,256		2,482
Ending balance: collectively evaluated for impairment	224,085		224,085		237,089
Ending balance: purchased credit impaired loans	791		791		1,055
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	36	49	37	44
Allowance for Loan Losses, Charge-offs	(133)		(295)	(7)
Allowance for Loan Losses, Recoveries	24	1	88	2
Allowance for Loan Losses, Provision	120	(4)	217	7
Allowance for Loan Losses, Ending balance	47	46	47	46
Ending balance: collectively evaluated for impairment	47		47		37
Ending balance: purchased credit impaired loans	0		0		0
Ending balance	12,814		12,814		14,594
Ending balance: collectively evaluated for impairment	12,814		12,814		14,594
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Beginning balance	189	43	381
Allowance for Loan Losses, Provision	(181)	125	(373)	168
Allowance for Loan Losses, Ending balance	8	$ 168	8	$ 168
Ending balance: collectively evaluated for impairment	8		8		381
Ending balance: purchased credit impaired loans	$ 0		$ 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	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 915,529	$ 955,971
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	128,265	140,116
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	36,478	34,405
Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	510,840	526,230
Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	227,132	240,626
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	12,814	14,594
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	870,953	906,480
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	111,392	126,506
Pass [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	35,770	32,840
Pass [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	489,199	497,852
Pass [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	221,778	234,808
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	12,814	14,474
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	20,753	28,453
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	9,423	9,372
Special Mention [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1	1,442
Special Mention [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	8,805	15,305
Special Mention [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	2,524	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	23,823	21,038
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	7,450	4,238
Substandard [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	707	123
Substandard [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	12,836	13,073
Substandard [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 2,830	$ 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	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending balance	$ 915,529	$ 955,971
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending balance	128,265	140,116
Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending balance	36,478	34,405
Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending balance	510,840	526,230
Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending balance	227,132	240,626
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending balance	12,814	14,594
Performing Loans and Non Accrual Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,937	7,849
Current	903,861	937,865
Nonaccrual Loans	2,780	1,745
Ending balance	910,578	947,459
Performing Loans and Non Accrual Loans [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	300	1,914
Current	126,505	137,612
Nonaccrual Loans	1,172	75
Ending balance	127,977	139,601
Performing Loans and Non Accrual Loans [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	373	8
Current	36,105	34,397
Ending balance	36,478	34,405
Performing Loans and Non Accrual Loans [Member] | Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	998	2,515
Current	505,260	516,410
Nonaccrual Loans	710	363
Ending balance	506,968	519,288
Performing Loans and Non Accrual Loans [Member] | Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,091	3,194
Current	223,352	235,070
Nonaccrual Loans	898	1,307
Ending balance	226,341	239,571
Performing Loans and Non Accrual Loans [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	175	218
Current	12,639	14,376
Ending balance	12,814	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	2,664	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	187	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	373	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	379	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	1,618	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	107	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	1,048	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	113	85
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	520	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	367	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	48	60
Performing Loans and Non Accrual Loans [Member] | 90 Days and Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	225	692
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	99	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	106	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	20	9
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending balance	$ 4,951	$ 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	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	$ 9,334	$ 5,751	$ 9,334	$ 5,751	$ 13,703
Impaired loans with an allowance recorded, recorded investment	2,566	1,181	2,566	1,181	1,056
Impaired loans, recorded investment	11,900	6,932	11,900	6,932	14,759
Impaired loans with no related allowance recorded, unpaid principal balance	9,352	5,769	9,352	5,769	13,721
Impaired loans with an allowance recorded, unpaid principal balance	2,704	1,319	2,704	1,319	1,194
Impaired loans, unpaid principal balance	12,056	7,088	12,056	7,088	14,915
Impaired loans, related allowance	571	273	571	273	224
Impaired loans with no related allowance recorded, average recorded investment	9,848	5,862	10,654	6,203	14,270
Impaired loans with an allowance recorded, average recorded investment	2,058	1,087	1,979	1,000	1,057
Impaired loans, average recorded investment	11,906	6,949	12,633	7,203	15,327
Impaired loans with no related allowance recorded, interest income recognized	886	68	2,765	200	566
Impaired loans with an allowance recorded, interest income recognized	6	10	19	27	36
Impaired loans, interest income recognized	892	78	2,784	227	602
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	288	724	288	724	1,107
Impaired loans with an allowance recorded, recorded investment	1,280	75	1,280	75	185
Impaired loans, recorded investment	1,568	799	1,568	799	1,292
Impaired loans with no related allowance recorded, unpaid principal balance	288	724	288	724	1,107
Impaired loans with an allowance recorded, unpaid principal balance	1,280	75	1,280	75	185
Impaired loans, unpaid principal balance	1,568	799	1,568	799	1,292
Impaired loans, related allowance	398	25	398	25	56
Impaired loans with no related allowance recorded, average recorded investment	327	798	562	803	1,210
Impaired loans with an allowance recorded, average recorded investment	1,056	78	1,072	76	186
Impaired loans, average recorded investment	1,383	876	1,634	879	1,396
Impaired loans with no related allowance recorded, interest income recognized	27	8	399	23	77
Impaired loans with an allowance recorded, interest income recognized	2		5	1	1
Impaired loans, interest income recognized	29	8	404	24	78
Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	6,181	2,753	6,181	2,753	9,399
Impaired loans with an allowance recorded, recorded investment	1,104	918	1,104	918	531
Impaired loans, recorded investment	7,285	3,671	7,285	3,671	9,930
Impaired loans with no related allowance recorded, unpaid principal balance	6,181	2,753	6,181	2,753	9,399
Impaired loans with an allowance recorded, unpaid principal balance	1,104	918	1,104	918	531
Impaired loans, unpaid principal balance	7,285	3,671	7,285	3,671	9,930
Impaired loans, related allowance	139	194	139	194	76
Impaired loans with no related allowance recorded, average recorded investment	6,580	2,760	7,081	2,992	10,164
Impaired loans with an allowance recorded, average recorded investment	818	820	723	798	532
Impaired loans, average recorded investment	7,398	3,580	7,804	3,790	10,696
Impaired loans with no related allowance recorded, interest income recognized	795	32	2,165	90	340
Impaired loans with an allowance recorded, interest income recognized	4	8	11	20	23
Impaired loans, interest income recognized	799	40	2,176	110	363
Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, recorded investment	2,865	2,274	2,865	2,274	3,197
Impaired loans with an allowance recorded, recorded investment	182	188	182	188	340
Impaired loans, recorded investment	3,047	2,462	3,047	2,462	3,537
Impaired loans with no related allowance recorded, unpaid principal balance	2,883	2,292	2,883	2,292	3,215
Impaired loans with an allowance recorded, unpaid principal balance	320	326	320	326	478
Impaired loans, unpaid principal balance	3,203	2,618	3,203	2,618	3,693
Impaired loans, related allowance	34	54	34	54	92
Impaired loans with no related allowance recorded, average recorded investment	2,941	2,304	3,011	2,408	2,896
Impaired loans with an allowance recorded, average recorded investment	184	189	184	126	339
Impaired loans, average recorded investment	3,125	2,493	3,195	2,534	3,235
Impaired loans with no related allowance recorded, interest income recognized	64	28	201	87	149
Impaired loans with an allowance recorded, interest income recognized		2	3	6	12
Impaired loans, interest income recognized	$ 64	$ 30	$ 204	$ 93	$ 161

Loans, Net and Allowance for _9

Loans, Net and Allowance for Loan Losses - Summary of Unpaid Principal Balances and Related Carrying Amounts of Acquired Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	$ 348,989	$ 438,423
Carrying Amount	342,231	426,658
Credit Impaired Purchased Loans Evaluated Individually for Incurred Credit Losses [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	9,853	16,803
Carrying Amount	4,951	8,512
Other Purchased Loans Evaluated Collectively for Incurred Credit Losses [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	339,136	421,620
Carrying Amount	$ 337,280	$ 418,146

Loans, Net and Allowance for_10

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	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance - beginning of period	$ 1,439	$ 323	$ 2,129	$ 370
Accretion recognized during the period	(819)	(21)	(2,673)	(44)
Net reclassification from non-accretable to accretable	208	11	1,372	(13)
Balance - end of period	$ 828	$ 313	$ 828	$ 313

Other Assets - Components of Ot

Other Assets - Components of Other Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Other Assets [Abstract]
Other real estate owned	$ 668	$ 236
Bank owned life insurance	29,670	29,065
Restricted equity securities	1,262	1,306
Deferred tax assets	6,612	7,949
Other assets	4,981	5,147
Total	$ 43,193	$ 43,703

Fair Value of Financial Instrum

Fair Value of Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	$ 97,102	$ 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	97,102	93,201
Fair Value Measurements Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available-for-sale	97,102	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	33,524	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	13,301	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	25,211	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	16,158	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	8,908	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	97,102	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	33,524	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	13,301	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	25,211	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	16,158	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	$ 8,908	$ 8,985

Fair Value of Financial Instr_2

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	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 668	$ 236
Impaired loans, net of related allowance	1,995	832
Total	2,663	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	668	236
Impaired loans, net of related allowance	1,995	832
Total	$ 2,663	$ 1,068

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Additional Quantitative Information about Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value Measurements Nonrecurring [Member] - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Estimate	$ 2,663	$ 1,068
Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Estimate	$ 668	$ 236
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 Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input	Liquidation expenses	Liquidation expenses
Impaired Loan [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Estimate	$ 1,995	$ 832
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 Measurement Inputs and 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 Measurement Inputs and 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 Measurement Inputs and 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 Measurement Inputs and 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 Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	0.00%	0.00%
Maximum [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Appraisal Adjustments [Member]
Fair Value Measurement Inputs and 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 Measurement Inputs and 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 Measurement Inputs and 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 Measurement Inputs and 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 Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	7.70%	39.00%
Weighted Average [Member] | Other Real Estate Owned [Member] | Level 3 Fair Value Measurements, Liquidation Expenses [Member]
Fair Value Measurement Inputs and 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 Measurement Inputs and 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 Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	9.50%	7.00%

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Carrying and Fair Values of Riverview's Financial Instruments (Detail) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Financial assets:
Cash and cash equivalents		$ 56,815	$ 25,786	$ 19,166	$ 19,120
Investment securities		97,102	93,201
Loans held for sale		598	254
Net loans		909,057	949,665
Accrued interest receivable		3,066	3,237
Restricted equity securities		1,262	1,306
Financial liabilities:
Deposits		1,020,764	1,026,480
Short-term borrowings			6,000
Long-term debt		13,019	13,233
Accrued interest payable		503	468
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents		56,815	25,786
Investment securities		97,102	93,201
Loans held for sale		598	254
Net loans	[1]	909,057	949,665
Accrued interest receivable		3,066	3,237
Restricted equity securities		1,262	1,306
Financial liabilities:
Deposits		1,020,764	1,026,480
Short-term borrowings			6,000
Long-term debt		13,019	13,233
Accrued interest payable		503	468
Fair Value [Member]
Financial assets:
Cash and cash equivalents		56,815	25,786
Investment securities		97,102	93,201
Loans held for sale		598	254
Net loans	[1]	898,735	954,876
Accrued interest receivable		3,066	3,237
Restricted equity securities		1,262	1,306
Financial liabilities:
Deposits		1,014,260	1,022,068
Short-term borrowings			6,000
Long-term debt		14,168	14,634
Accrued interest payable		503	468
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Cash and cash equivalents		56,815	25,786
Restricted equity securities		1,262	1,306
Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Investment securities		97,102	93,201
Loans held for sale		598	254
Accrued interest receivable		776	640
Financial liabilities:
Deposits		1,014,260	1,022,068
Short-term borrowings			6,000
Long-term debt		14,168	14,634
Accrued interest payable		503	468
Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Net loans	[1]	898,735	954,876
Accrued interest receivable		$ 2,290	$ 2,597
[1]	The carrying amount is net of unearned income and the allowance for loan losses in accordance with the adoption of ASU No. 2016-01 where the fair value of loans as of September 30, 2018 was measured using an exit price notion. The fair value of loans at December 31, 2017 was measured using an entry price notion.

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	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Noninterest Income
Noninterest Income	$ 2,054	$ 835	$ 6,540	$ 2,416
In-scope of Topic 606 [Member]
Noninterest Income
Noninterest Income	1,692	480	5,389	1,622
In-scope of Topic 606 [Member] | Service Charges, Fees and Commissions [Member]
Noninterest Income
Noninterest Income	1,267	270	4,146	899
In-scope of Topic 606 [Member] | Investment Advisory, Management and Administrative Service [Member]
Noninterest Income
Noninterest Income	425	210	1,243	723
Out-scope of Topic 606 [Member]
Noninterest Income
Noninterest Income	$ 362	$ 355	$ 1,151	$ 794

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Contract with customer asset	$ 0	$ 0
Contract with customer liability	$ 0	$ 0