First Priority Financial 10-K 23 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 16, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	FPBK
Entity Registrant Name	FIRST PRIORITY FINANCIAL CORP.
Entity Central Index Key	1,389,772
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		6,646,469
Entity Public Float			$ 41,081,000

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 5,591	$ 2,790
Interest-bearing deposits in banks	2,666	1,971
Total cash and cash equivalents	8,257	4,761
Securities available for sale, at fair value (amortized cost: $52,379 and $70,635, respectively)	52,373	70,560
Securities held to maturity, at amortized cost (fair value: $19,665 and $19,584, respectively)	18,665	19,043
Loans receivable	518,927	488,243
Less: allowance for loan losses	3,405	3,330
Net loans	515,522	484,913
Restricted investments in bank stocks	1,416	3,257
Premises and equipment, net	1,607	1,755
Bank owned life insurance	3,326	3,256
Accrued interest receivable	2,007	1,817
Other real estate owned	550	1,486
Deferred taxes	923	2,697
Goodwill	2,725	2,725
Intangible assets with finite lives, net	169	235
Other assets	2,402	1,290
Total Assets	609,942	597,795
Deposits:
Non-interest bearing	65,634	54,817
Interest-bearing	457,516	412,871
Total deposits	523,150	467,688
Federal home Loan Bank of Pittsburgh advances	24,625	68,164
Subordinated debt	9,231	9,207
Accrued interest payable	844	510
Other liabilities	1,596	4,180
Total Liabilities	559,446	549,749
Shareholders’ Equity:
Common stock, $1 par value; authorized 20,000,000 shares; issued and outstanding: 2017: 6,577,969; 2016: 6,529,719	6,578	6,530
Surplus	40,843	40,629
Accumulated deficit	(323)	(2,475)
Accumulated other comprehensive loss	(6)	(42)
Total Shareholders’ Equity	50,496	48,046
Total Liabilities and Shareholders’ Equity	609,942	597,795
Series C Preferred Stock [Member]
Shareholders’ Equity:
Preferred stock, value	$ 3,404	$ 3,404

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Securities available for sale, amortized cost	$ 52,379	$ 70,635
Securities held to maturity, fair value	$ 19,665	$ 19,584
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	6,577,969	6,529,719
Common stock, shares outstanding	6,577,969	6,529,719
Preferred stock, dividend rate	9.00%	9.00%
Preferred stock, shares outstanding	3,404	3,404
Series C Preferred Stock [Member]
Preferred stock, par value	$ 100	$ 100
Preferred stock, authorized shares	10,000,000	10,000,000
Preferred stock, dividend rate	9.00%	9.00%
Preferred stock, liquidation value per share	$ 1,000	$ 1,000
Preferred stock, shares issued	3,404	3,404
Preferred stock, shares outstanding	3,404	3,404
Preferred stock, total liquidation value	$ 3,404	$ 3,404

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Interest and Dividend Income
Loans receivable, including fees	$ 22,074	$ 19,570
Securities—taxable	1,199	1,150
Securities—exempt from federal taxes	579	408
Interest bearing deposits and other	201	118
Total Interest and Dividend Income	24,053	21,246
Interest Expense
Deposits	4,713	3,547
Short-term borrowings	305	137
Long-term debt	142	158
Subordinated debt	689	688
Total Interest Expense	5,849	4,530
Net Interest Income	18,204	16,716
Provision for Loan Losses	385	710
Net Interest Income after Provision for Loan Losses	17,819	16,006
Non-Interest Income
Wealth management fee income	168	308
Net gains on sales of investment securities	416	795
Bank owned life insurance income	70	78
Other	387	364
Total Non-Interest Income	1,041	1,545
Non-Interest Expenses
Salaries and employee benefits	8,273	8,046
Occupancy and equipment	1,844	1,906
Data processing equipment and operations	927	884
Professional fees	690	709
Marketing, advertising, and business development	336	230
FDIC insurance assessments	520	398
Pennsylvania bank shares tax expense	354	315
Other real estate owned	178	423
Other	1,279	1,212
Total Non-Interest Expenses	14,401	14,123
Income before Income Tax Expense	4,459	3,428
Income Tax Expense	2,001	1,128
Net Income	2,458	2,300
Preferred dividends	306	407
Income to Common Shareholders	$ 2,152	$ 1,893
Income per common share:
Basic	$ 0.33	$ 0.29
Diluted	$ 0.32	$ 0.29
Weighted average common shares outstanding:
Basic	6,559	6,514
Diluted	6,785	6,570

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 2,458	$ 2,300
Securities available for sale:
Change in unrealized gain on securities available for sale	485	405
Reclassification adjustment for realized gains included in net income	(416)	(795)
Tax effect	(24)	133
Net gains (losses) arising during the period	45	(257)
Net unrealized holding losses on securities transferred between available for sale and held to maturity:
Amortization of net unrealized holding losses to income during the period	(15)	(31)
Tax effect	6	10
Net unrealized holding losses on securities transferred during the period	(9)	(21)
Total other comprehensive income (loss)	36	(278)
Total comprehensive income	$ 2,494	$ 2,022

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Surplus [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2015	$ 52,091	$ 9,404	$ 6,492	$ 40,327	$ (4,368)	$ 236
Preferred stock dividends	(407)				(407)
Redemption of preferred stock	(6,000)	(6,000)
Issuance of restricted common stock, net of forfeitures			36	(36)
Exercise of common stock options	12		2	10
Net income	2,300				2,300
Other comprehensive income (loss)	(278)					(278)
Stock based compensation expense	328			328
Ending balance at Dec. 31, 2016	48,046	3,404	6,530	40,629	(2,475)	(42)
Preferred stock dividends	(306)				(306)
Issuance of restricted common stock, net of forfeitures			48	(48)
Net income	2,458				2,458
Other comprehensive income (loss)	36					36
Stock based compensation expense	262			262
Ending balance at Dec. 31, 2017	$ 50,496	$ 3,404	$ 6,578	$ 40,843	$ (323)	$ (6)

Consolidated Statements of Sha7

Consolidated Statements of Shareholders' Equity (Parenthetical) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement Of Stockholders Equity [Abstract]
Forfeited of restricted common stock , shares	4,450	725
Issuance of restricted common stock net of forfeited, shares	52,700	36,250
Exercise of common stock options, shares		2,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities
Net income	$ 2,458	$ 2,300
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	385	710
Write down of other real estate owned	44	139
Depreciation and amortization of premises and equipment	262	309
Net amortization	346	261
Stock based compensation expense	262	328
Net amortization of investment securities premiums and discounts	146	151
Net gains on sales of investment securities	(416)	(795)
Net (gain) loss on sale of other real estate owned	(74)	18
Net loss on disposal of premises and equipment	1	25
Bank owned life insurance policy income	(70)	(78)
Deferred income tax expense	1,755	988
Increase in accrued interest receivable	(190)	(194)
Increase in other assets	(272)	(20)
Increase in accrued interest payable	334	60
Increase in other liabilities	115	2,813
Net Cash Provided by Operating Activities	5,086	7,015
Cash Flows from Investing Activities
Net originations in loans	(15,114)	(2,531)
Purchase of loans	(16,151)	(77,326)
Purchases of securities available for sale	(59,770)	(49,645)
Redemption of restricted bank stock	1,841	111
Proceeds from maturities or calls of securities available for sale	61,490	60,537
Proceeds from maturities or calls of securities held to maturity	290	740
Proceeds from the sale of securities available for sale	13,340	13,563
Proceeds from the sale of other real estate owned	966	332
Purchases of premises and equipment	(116)	(56)
Net Cash Used in Investing Activities	(13,224)	(54,275)
Cash Flows from Financing Activities
Net increase in deposits	55,479	59,104
Net decrease in short-term borrowings	(40,539)	(3,561)
Repayments of long-term borrowings	(3,000)	(3,000)
Payments regarding subordinated debt issuance costs		(16)
Redemption of preferred stock		(6,000)
Proceeds from the exercise of common stock options		12
Cash dividends paid on preferred stock	(306)	(427)
Net Cash Provided by Financing Activities	11,634	46,112
Net Increase (Decrease) in Cash and Cash Equivalents	3,496	(1,148)
Cash and Cash Equivalents—Beginning	4,761	5,909
Cash and Cash Equivalents—Ending	8,257	4,761
Supplementary Disclosures of Cash Flows Information
Transfer of available for sale securities to held to maturity securities		2,698
Transfer of loans receivable to other real estate owned		342
Cash paid for interest on deposits and borrowings	5,534	4,573
Cash paid for income taxes	$ 182	$ 139

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1—Summary of Significant Accounting Policies Organization and Nature of Operations First Priority Financial Corp. First Priority Financial Corp. (“First Priority”, the “Company”) is a bank holding company incorporated under the laws of the Commonwealth of Pennsylvania on February 13, 2007. On May 11, 2007, as a result of a reorganization and merger, First Priority Bank (the “Bank”) became a wholly-owned subsidiary of First Priority. First Priority, primarily through the Bank, serves residents and businesses in the Delaware Valley with branches in Berks, Bucks, Chester and Montgomery counties in Pennsylvania. The Bank, headquartered in Malvern, PA, has seven retail branch office locations and one loan production office and is a locally managed community bank providing commercial banking products, primarily loans and deposits. First Priority provides banking services through the Bank and does not engage in any activities other than banking and related activities. First Priority Bank The Bank is a state-chartered commercial banking institution which was incorporated under the laws of the Commonwealth of Pennsylvania on May 25, 2005. The Bank’s deposits are insured by the FDIC up to the maximum amount permitted for all banks. The Bank engages in a full service commercial and consumer banking business with strong private banking and individual wealth management services. The Bank offers a variety of consumer, private banking and commercial loans, mortgage products and commercial real estate financing. The Company’s operations are significantly affected by prevailing economic conditions, competition, and the monetary, fiscal, and regulatory policies of governmental agencies. Lending activities are influenced by a number of factors, including the general credit needs of individuals and small and medium-sized businesses in the Company’s market area, competition, the current regulatory environment, the level of interest rates, and the availability of funds. Deposit flows and costs of funds are influenced by prevailing market rates of interest, competition, account maturities, and the level of personal income and savings in the market area. The Bank also offers certain financial planning and investment management services. These investment services are provided by First Priority Financial Services, a Division of First Priority Bank, through third party providers. In addition, the Bank has entered into solicitation agreements with several investment advisors to provide portfolio management services to customers of the Bank. The Bank currently seeks deposits and commercial and private banking relationships through its banking offices. The Bank provides deposit products that include checking, money market and savings accounts, and certificates of deposit as well as other deposit services, including cash management, electronic banking and mobile products as well as online account opening capabilities. The Bank obtains funding in the local community by providing excellent service and competitive rates to its customers and utilizes various advertising to attract current and potential deposit customers. The Bank also uses brokered certificates of deposit as a cost effective funding alternative. Basis of Presentation The accompanying consolidated financial statements consist of the Company and the Company’s wholly owned consolidated subsidiary, the Bank. All significant intercompany accounts and transactions have been eliminated in consolidation. These statements are prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). Subsequent Events Management has evaluated events and transactions occurring subsequent to December 31, 2017 for items that should potentially be recognized or disclosed in these Consolidated Financial Statements. The evaluation was conducted through the date these financial statements were issued. Use of Estimates The preparation of 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the valuation of acquired loans, the determination of the allowance for loan losses, stock-based compensation, impairment of goodwill, impairment of investments, the valuation of deferred tax assets and the valuation of other real estate owned. Significant Group Concentrations of Credit Risk Most of the Company’s activities are with customers located within the western and northwestern suburbs surrounding Philadelphia. Note 4 of the Notes to Consolidated Financial Statements discusses the types of securities in which the Company currently invests. Note 5 discusses the types of lending in which the Company engages. Although the Company intends to have a diversified loan portfolio, its debtors’ ability to honor their contracts will be influenced by the region’s economy. The Company’s investment portfolio consists principally of obligations of the United States and its agencies and obligations of states and political subdivisions. In the opinion of management, there is no concentration of credit risk in its investment portfolio. The Company places deposits in correspondent accounts and, on occasion, sells Federal funds to qualified financial institutions. Management believes credit risk associated with correspondent accounts and with Federal funds sold is not significant. Therefore, management believes that these particular practices do not subject the Company to unusual credit risk. Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks, Federal funds sold and short-term money market securities. Generally, Federal funds are purchased or sold for one day periods. Short-term investments are generally purchased with a maturity date of less than three months. The Company is required to maintain cash reserves that are considered restrictions on cash and cash equivalents which consist of required reserves with the Federal Reserve Bank, related to our deposit liabilities. At December 31, 2017 and 2016, these reserve balances were $1.7 million and $1.9 million, respectively. Securities Management determines the appropriate classification of debt securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Securities classified as available for sale are those securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity. Available for sale securities are carried at fair value. Unrealized gains and losses on available for sale investment securities are reported as increases or decreases in other comprehensive income as a component of shareholders’ equity. Realized gains or losses, determined on the basis of the cost of the specific securities sold, are included in earnings. Premiums and discounts are recognized in interest income using the interest method over the term of each security. Any decision to sell a security classified as available for sale would be based on various factors, including significant movements, or anticipated movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, regulatory capital considerations and other similar factors. Securities classified as held to maturity are those debt securities the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs or changes in general economic conditions. These securities are carried at cost adjusted for the amortization of premium and accretion of discount, using the interest method over the terms of the securities. Transfer of securities into held to maturity from available for sale are made at fair value at the date of transfer. The unrealized gain/loss at date of transfer is retained in other comprehensive income, and in the current value of the held to maturity securities. Such amounts are amortized over the remaining life of the security. In estimating other-than-temporary impairment losses, management considers (1) the length of time and the extent to which the fair value has been less than cost; (2) the financial condition and near-term prospects of the issuer; and (3) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. When a determination is made that an other-than-temporary impairment exists but the Company does not intend to sell the debt security and it is more likely than not that it will not be required to sell the debt security prior to its anticipated recovery, the other-than-temporary impairment is separated into (a) the amount of the total other-than-temporary impairment related to a decrease in cash flows expected to be collected from the debt security (the credit loss) and (b) the amount of the total other-than-temporary impairment related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to all other factors is recognized in other comprehensive income. Restricted Investments in Bank Stocks Restricted investments in bank stocks, which represents the required investment in the common stock of correspondent banks, are carried at cost and consist of stock of the Federal Home Loan Bank of Pittsburgh (“FHLB”) and Atlantic Community Bancshares, Inc. Federal law requires a member institution of the FHLB to hold FHLB stock according to a predetermined formula. Management’s determination of whether these investments are impaired is based on their assessment of the ultimate recoverability of their cost rather than by recognizing temporary declines in value. Loans Receivable Loans receivable that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at their outstanding unpaid principal balances, net of an allowance for loan losses and any deferred fees or costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the yield (interest income) by the interest method based on the contractual terms of the related loans, or if the commitment expires unexercised, recognized in income upon expiration. The loans receivable portfolio is segmented into commercial, residential mortgage loans and consumer loans. Commercial loans consist of the following classes: commercial and industrial, commercial construction and commercial mortgage loans. Consumer loans consist of home equity lines of credit and all other consumer loans. The accrual of interest is discontinued when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about further collectability of principal or interest, even though the loan is currently performing. A loan may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed and unpaid interest accrued in prior years is charged against the allowance for loan losses. Interest received on nonaccrual loans is generally either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time, and the ultimate collectability of the total contractual principal and interest is no longer in doubt. The past due status of all classes of loans receivable is determined based on contractual due dates for loan payments. Acquired Loans Loans acquired as part of a full bank acquisition are initially recorded at their acquisition date fair values. The carryover of 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 acquired loans are based on a discounted cash flow methodology that involves assumptions and judgments as to credit risk, prepayment risk, liquidity risk, default rates, loss severity, payment speeds, collateral values and discount rate. Acquired loans that have evidence of deterioration in credit quality since origination and for which it is probable, at acquisition, that the Company will be unable to collect all contractually required payments are accounted for as impaired loans under ASC 310-30. 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 loans using the interest method. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the non-accretable discount. The non-accretable discount represents estimated future credit losses expected to be incurred over the life of the loan. Subsequent decreases to the expected cash flows require the Company to evaluate the need for an allowance for loan losses on these loans. Subsequent improvements in expected cash flows result in the reversal of a corresponding amount of the non-accretable discount which the Company then reclassifies as an accretable discount that is recognized into interest income over the remaining life of the loans using the interest method. As of December 31, 2017, there were three remaining acquired purchased credit impaired loans with a net recorded balance of $55 thousand, after a non-accretable credit discount of $352 thousand compared to a net recorded balance of $215 thousand, after a non-accretable credit discount of $362 thousand as of December 31, 2016. Acquired loans that met the criteria for non-accrual of interest prior to acquisition may be considered performing upon acquisition, or in the future, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be non-accrual or non-performing and may accrue interest on these loans, including the impact of any accretable discount. For acquired loans that are not deemed impaired at acquisition, credit discounts representing the principal losses expected over the life of the loan are a component of the initial fair value and amortized over the life of the asset using the interest method. Subsequent to the acquisition date, the methods utilized to estimate the required allowance for loan losses for these loans is similar to originated loans, however, the Company records a provision for loan losses only when the required allowance exceeds any remaining pooled discounts for loans evaluated collectively for impairment. The Company also purchased portfolios of performing residential mortgage loans in 2014 through 2017, all of which were underwritten using similar underwriting standards as it uses for its organic portfolio. In August 2016, the Company purchased performing commercial loans from within the Bank’s market area. Net acquisition premiums, or discounts, from the purchased loans will be recognized into interest income over the remaining life of the loans using the interest method. There are currently no non-performing loans within these portfolios. Allowance for Loan Losses The allowance for credit losses consists of the allowance for loan losses and the reserve for unfunded lending commitments. The allowance for loan losses represents management’s estimate of losses inherent in the loan portfolio as of the balance sheet date and is recorded as a reduction to loans. The reserve for unfunded lending commitments, totaling $35 thousand as of both December 31, 2017 and 2016, represents management’s estimate of potential losses inherent in its unfunded loan commitments and is recorded in other liabilities on the consolidated balance sheets. The allowance for loan losses is increased by the provision for loan losses, and decreased by charge-offs, net of recoveries. Loans deemed to be uncollectible are charged against the allowance for loan losses, and subsequent recoveries, if any, are credited to the allowance. All, or part, of the principal balance of loans receivable are charged off to the allowance as soon as it is determined that the repayment of all, or part, of the principal balance is highly unlikely. Because all identified losses are immediately charged off, no portion of the allowance for loan losses is restricted to any individual loan or groups of loans, and the entire allowance is available to absorb any and all loan losses. The allowance for loan losses is maintained at a level considered adequate to provide for losses that can be reasonably anticipated. Management performs a quarterly evaluation of the adequacy of the allowance. The allowance is based on the Company’s past loan loss experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral, composition of the loan portfolio, current economic conditions and other relevant factors. This evaluation is inherently subjective as it requires material estimates that may be susceptible to significant revision as more information becomes available. The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as impaired. For loans that are classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component covers pools of loans by loan class including commercial loans not considered impaired, as well as smaller balance homogeneous loans, such as residential real estate, home equity and other consumer loans. These pools of loans are evaluated for loss exposure based upon historical loss rates for each of these categories of loans, adjusted for qualitative factors. These qualitative risk factors include: 1. Lending policies and procedures, including underwriting standards and collection, charge-off, and recovery practices. 2. National, regional, and local economic and business conditions as well as the condition of various market segments, including the value of underlying collateral for collateral dependent loans. 3. Nature and volume of the portfolio and terms of loans. 4. Management team with experience, depth, and knowledge in banking and in many areas of lending. Each contributes to the sound credit culture and control within the Company. 5. Volume and severity of past due, classified and nonaccrual loans as well as other loan modifications. 6. The Company engages a third party to perform an independent review of the loan portfolio as a measure for quality and consistency in credit evaluation and credit decisions. 7. Existence and effect of any concentrations of credit and changes in the level of such concentrations. 8. Effect of external factors, such as competition and legal and regulatory requirements. Each factor is assigned a value to reflect improving, stable or declining conditions based on management’s best judgment using relevant information available at the time of the evaluation. Adjustments to the factors are supported through documentation of changes in conditions in a narrative accompanying the allowance for loan loss calculation. A majority of the Company’s loans are to business owners of many types. The Company makes commercial loans for real estate development and other business purposes required by our customers. The Company’s credit policies determine advance rates against the different forms of collateral that can be pledged against commercial loans. Typically, the majority of loans will be limited to a percentage of their underlying collateral values such as real estate values, equipment, eligible accounts receivable and inventory. Individual loan advance rates may be higher or lower depending upon the financial strength of the borrower and/or term of the loan. The assets financed through commercial and industrial loans are used within the business for its ongoing operation. Repayment of these kinds of loans generally comes from the cash flow of the business or the ongoing conversions of assets. Commercial real estate loans include long-term loans financing commercial properties. Repayment of this kind of loan is dependent upon either the ongoing cash flow of the borrowing entity or the resale of or lease of the subject property. Commercial real estate loans typically require a loan to value ratio of not greater than 80% and vary in terms. Construction loans consists of acquisition, construction and development loans serving a diverse customer base in its primary market areas. The composition of this portfolio can change based on local economic conditions such as supply and demand, interest rates and real estate values. The Company typically lends to builders and developers with established relationships, successful operating histories and sound financial resources. Construction loans include both commercial and residential related loans. The commercial portion consists of loans for the purpose of acquiring, developing and constructing a commercial-use structure and for the acquisition, development and/or construction of residential properties, such as single-family homes or smaller multi-family buildings, by residential developers and builders. This may also include the acquisition and development of land on a selective basis. The residential portion consists of loans for the acquisition of and/or construction on land where a residential dwelling is to be built and occupied by the home-owner. Residential mortgages and home equity loans are secured by the borrower’s residential real estate in either a first or second lien position. Residential mortgages and home equity loans have varying loan rates depending on the loan terms. Residential mortgages have amortizations up to 30 years and home equity loans have amortizations up to 15 years. Residential mortgages and home equity loans typically require a loan to value ratio of not greater than 80%. Other consumer loans include installment loans, car loans, and overdraft lines of credit. The majority of these loans are secured. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case by case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis by either 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. An allowance for loan losses is established for an impaired loan if its carrying value exceeds its estimated fair value. The estimated fair values of substantially all of the Company’s impaired loans are measured based on the estimated fair value of the loan’s collateral. For commercial loans secured by real estate, estimated fair values are determined primarily through third-party appraisals. When a real estate secured loan becomes impaired, a decision is made regarding whether an updated certified appraisal of the real estate is necessary. This decision is based on various considerations, including the age of the most recent appraisal, the loan-to-value ratio based on the original appraisal and the condition of the property. Appraised values may be discounted to arrive at the estimated selling price of the collateral, which is considered to be the estimated fair value. The discounts also include estimated costs to sell the property. For commercial and industrial loans secured by non-real estate collateral, such as accounts receivable, inventory and equipment, estimated fair values are determined based on the borrower’s financial statements, inventory reports, accounts receivable aging or equipment appraisals or invoices. Indications of value from these sources are generally discounted based on the age of the financial information or the quality of the assets. The allowance calculation methodology includes further segregation of loan classes into risk rating categories. The borrower’s overall financial condition, repayment sources, guarantors and value of collateral, if appropriate, are evaluated annually for commercial loans or when credit deficiencies arise, such as delinquent loan payments, for commercial and consumer loans. Credit quality risk ratings include regulatory classifications of special mention, substandard, doubtful and loss. Loans criticized special mention have potential weaknesses that deserve management’s close attention. If uncorrected, the potential weaknesses may result in deterioration of the repayment prospects. Loans classified substandard have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They include loans that are inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans classified doubtful have all the weaknesses inherent in loans classified substandard with the added characteristic that collection or liquidation in full, on the basis of current conditions and facts, is highly improbable. Loans classified as a loss are considered uncollectible and are charged to the allowance for loan losses. Loans not classified are rated pass. In addition, Federal regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and may require the Company to recognize additions to the allowance based on their judgments about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio, management believes the current level of the allowance for loan losses is adequate. Troubled Debt Restructurings Loans whose terms are modified are classified as troubled debt restructurings (“TDR”) if the Company grants such borrowers concessions and it is deemed that those borrowers are experiencing financial difficulty. Concessions granted under a TDR may be modified by means of extending the maturity date of the loan, reducing the interest rate on the loan to a rate which is below market, a combination of rate adjustments and maturity extensions, or by other means including covenant modifications, forbearances or other concessions. Generally, interest is not accrued on loans that were non-accrual prior to the TDR until they have performed in accordance with the modified terms for a period of at least six months; however, non-accrual TDR’s may be restored to accrual status if principal and interest payments, under the modified terms, are current for six consecutive months after modification. Loans classified as TDR’s are designated as impaired. TDR’s which are performing based on modified terms and conditions, which reflect the current market, may be reclassified from TDR status. Management evaluates the allowance for loan losses with respect to TDR’s under the same policy and guidelines as all other performing loans are evaluated with respect to the allowance for loan losses. Transfers of Financial Assets Transfers of financial assets, including loan and loan participation sales, are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company; (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets; and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Other Real Estate Owned Assets acquired through, or in lieu of, loan foreclosure are held for sale and generally are initially recorded at fair value less cost to sell at the date of foreclosure, establishing a new cost basis. Any write-down, at or prior to the dates the real estate is considered foreclosed, is charged to the allowance for loan losses. Subsequent to foreclosure, valuations are periodically performed by management and the assets are generally carried at the lower of carrying amount or fair value less cost to sell. Revenue and expenses from operations and changes in the valuation allowance (write-downs) are included in other non-interest expenses. Any gain or loss upon the sale of real estate owned is reflected in operations as incurred. Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Premises and equipment in an acquisition or merger are recorded on acquisition date at fair value. Depreciation is computed on the straight-line method over the estimated useful lives of the related assets, ranging from 1 to 20 years beginning when the assets are placed in service. Buildings are depreciated from 14 to 20 years. Leasehold improvements are amortized over the term of the lease or estimated useful lives, whichever is shorter, ranging from 1 to 20 years. Furniture, fixtures and equipment are depreciated from 2 to 10 years, automobiles are depreciated over 5 years and computer equipment and data processing software are depreciated from 1 to 10 years. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is reflected in income for the period. The cost of maintenance and repairs is charged to expense as incurred. Bank Owned Life Insurance The Bank invests in bank owned life insurance (“BOLI”) policies that provide earnings to help cover the cost of employee benefit plans. The Bank is the owner of the life insurance policies it purchased directly on the lives of certain officers of the Bank. These policies were issued as split dollar life insurance policies which provide for a portion of the death benefit to be paid to the beneficiaries of the officer while employed by the Bank or through change in control provisions. The policies are carried on the Company’s consolidated balance sheet at their cash surrender value and are subject to regulatory capital requirements. The determination of the cash surrender value includes a full evaluation of the contractual terms of each policy. Additionally, the Company periodically reviews the creditworthiness of the insurance company that has underwritten the policies. Earnings accruing to the Company are derived from the general account investments of the insurance companies. Increases in the net cash surrender value of BOLI policies and insurance proceeds received are not taxable and are recorded

Recently Issued Accounting Stan

Recently Issued Accounting Standards	12 Months Ended
	Dec. 31, 2017
Accounting Changes And Error Corrections [Abstract]
Recently Issued Accounting Standards	Note 2—Recently Issued Accounting Standards Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. First Priority’s revenue is comprised of net interest income on financial assets and liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. This accounting guidance can be implemented using either a full retrospective method or a modified retrospective approach and will be effective for interim and annual reporting periods beginning after December 15, 2017 (effective January 1, 2018 for First Priority). Early adoption is permitted; however, First Priority will adopt this new accounting guidance in 2018, as required, and will adopt the new guidance using the modified retrospective approach. The modified retrospective approach uses a cumulative-effect adjustment to retained earnings to reflect uncompleted contracts in the initial application of the guidance. The Company has assessed its revenue streams and its contracts with customers that could potentially be affected by the new guidance; including wealth management fees, fees on deposits, gains and losses on the sale of other real estate owned and debit card interchange fees; but did not identify material changes to the timing or amount of revenue recognition. The adoption of this accounting guidance does not have a material impact on the Company’s financial condition or results of operations. The Company will also be subject to expanded disclosure requirements upon adoption for which the Company is still in the process of evaluating. In January 2016, the FASB issued Accounting Standards Update 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”). ASU 2016-01 changes current U.S. GAAP for public entities by requiring the following, among others: (1) equity securities, except those accounted for under the equity method of accounting, to be measured at fair value with changes in fair value recognized in net income; (2) the use of the exit price when measuring fair value of financial instruments for disclosure purposes; (3) an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value; and (4) separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or notes to the financial statements. ASU 2016-01 is effective for annual periods beginning after December 15, 2017, including interim periods. Early application is permitted. The Company does not hold any equity investments (excluding restricted investments in bank stocks) that do not have a readily determinable market value. The Company has determined the implementation of this standard will not have a material impact to the financial statements and disclosures. In February 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-02, Leases. In March 2016, the FASB issued ASU 2016-09, “Improvements to Employee Share-Based Payment Accounting.” This ASU simplifies several aspects of the accounting for employee share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statements of cash flows. For public business entities, this ASU is effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods therein. Accordingly, effective January of 2017, the Company adopted the pronouncement. During the year ended December 31, 2017, the Company had $10 thousand of tax benefits for stock option exercises and restricted stock vesting. In accordance with ASU 2016-09, forfeitures are recognized as they occur instead of applying an estimated forfeiture rate to each grant. For purposes of the determination of stock-based compensation expense for the year ended December 31, 2017, we recognized actual forfeitures of 4,450 shares of restricted stock awards that were granted to officers and other employees. In September 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326).” The main objective of this Update is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this Update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For public business entities, this ASU is effective for financial statements issued for fiscal years beginning after December 15, 2019, and interim periods therein. Early adoption is permitted. The Company is reviewing our system and data collection to determine necessary changes to our current practice. In August 2016, the FASB issued ASU 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” This ASU clarifies how certain cash receipts and cash payments are presented in the statement of cash flows. This update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. For public business entities this ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. The Company is evaluating the impact of this ASU on its consolidated financial statements and disclosures. Historically the cash flows, addressed by this standard, have been infrequent and immaterial. In January 2017, the FASB issued ASU 2017-04, “Intangibles ─ Goodwill and Other (Topic 350).” This update intends to simplify the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. The amendments in this Update modify the concept of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair value to the condition that exists when the carrying amount of a reporting unit exceeds its fair value. For public business entities this ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, and interim periods therein. Early adoption is permitted. The Company does not expect the implementation of this standard to have a material impact on its consolidated statement of operations. In March 2017, the FASB issued ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities, which amends the amortization period for certain purchased callable debt securities held at a premium, shortening such period to the earliest call date. The ASU is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. For all other entities, the ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Earlier application is permitted for all entities, including adoption in an interim period. If an entity early adopts the ASU in an interim period, any adjustments must be reflected as of the beginning of the fiscal year that includes that interim period. The Company does not expect the implementation of this standard to have a material impact on its consolidated statement of operations. In February 2018, the FASB issued ASU No. 2018-02, Income Statement Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income; (“ASU 2018-02”). ASU 2018-02 states an entity may elect to reclassify the income tax effects of the Tax Cuts and Jobs Act on items within accumulated other comprehensive income to retained earnings. The amendments in this update are effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, and the Company adopted this accounting guidance effective December 31, 2017. The amount of this reclassification was immaterial.

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	Note 3—Earnings Per Common Share Diluted earnings per common share take into account the potential dilution that could occur if securities or other contracts to issue common stock are exercised and converted into common stock. Proceeds assumed to have been received on such exercise or conversion, are assumed to be used to purchase shares of the Company’s common stock at the average market price during the period, as required by the “treasury stock method” of accounting for common stock equivalents. For purposes of calculating the basic and diluted earnings per share, the Company’s reported net income is adjusted for dividends on preferred stock to determine the net income to common shareholders. Securities that could potentially dilute basic earnings per common share in future periods that were not included in the computation of diluted earnings per common share because to do so would have been anti-dilutive amounted to 54,029 shares as of December 31, 2017, and 148,174 shares as of December 31, 2016. The calculations of basic and diluted earnings per common share are presented below for the years ended December 31, 2017 and 2016: For the year ended December 31, 2017 2016 (In thousands, except per share information) Net income $ 2,458 $ 2,300 Less: preferred stock dividends (306 ) (407 ) Income to common shareholders $ 2,152 $ 1,893 Average basic common shares outstanding 6,559 6,514 Effect of dilutive stock options 226 56 Average number of common shares used to calculate diluted earnings per common share 6,785 6,570 Basic earnings per common share $ 0.33 $ 0.29 Diluted earnings per common share $ 0.32 $ 0.29 The amount of preferred stock dividends related to each series of preferred stock are presented below for the years ended December 31, 2017 and 2016: For the year ended December 31, 2017 2016 (Dollars in thousands) Preferred dividends: Preferred Series A $ - $ 77 Preferred Series B - 4 Preferred Series C 306 326 Total preferred dividends $ 306 $ 407

Securities

Securities	12 Months Ended
	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Securities	Note 4—Securities Management determines the appropriate classification of debt securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Securities classified as available for sale are those securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity. Available for sale securities are carried at fair value. Securities classified as held to maturity are those debt securities the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs or changes in general economic conditions. These securities are carried at cost adjusted for the amortization of premium and accretion of discount, computed by a method which approximates the interest method over the terms of the securities. The Company previously transferred investment securities from available for sale to held to maturity securities. Related to these transfers, there were net unrealized holding losses of $3 thousand, before the impact of taxes, as of December 31, 2017, compared to net unrealized holding gains of $12 thousand, before the impact of taxes, as of December 31, 2016, which are being amortized over the remaining life of the related securities as an adjustment of yield in a manner consistent with the accretion of discount on the same transferred debt securities. This will have no impact on the Company’s net income because the amortization of the unrealized holding loss reported in equity will offset the effect on the interest income of the accretion of the discount on these securities. The amortized cost, unrealized gains and losses, and the fair value of the Company’s investment securities available for sale and held to maturity are as follows for the periods presented: December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Available For Sale: Obligations of U.S. government agencies and corporations $ 20,991 $ - $ (20 ) $ 20,971 Obligations of states and political subdivisions 4,218 168 - 4,386 Federal agency mortgage-backed securities 25,524 16 (251 ) 25,289 Federal agency collateralized mortgage obligations 111 - (2 ) 109 Other debt securities 1,500 83 - 1,583 Money market mutual fund 35 - - 35 Total investment securities available for sale $ 52,379 $ 267 $ (273 ) $ 52,373 Held To Maturity: Obligations of states and political subdivisions $ 18,183 $ 953 $ (4 ) $ 19,132 Other debt securities 482 51 - 533 Total held to maturity $ 18,665 $ 1,004 $ (4 ) $ 19,665 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Available For Sale: Obligations of U.S. government agencies and corporations $ 45,984 $ 8 $ (5 ) $ 45,987 Obligations of states and political subdivisions 6,103 46 (10 ) 6,139 Federal agency mortgage-backed securities 13,863 33 (176 ) 13,720 Federal agency collateralized mortgage obligations 190 - (1 ) 189 Other debt securities 1,500 30 - 1,530 Money market mutual fund 2,995 - - 2,995 Total investment securities available for sale $ 70,635 $ 117 $ (192 ) $ 70,560 Held To Maturity: Obligations of states and political subdivisions $ 18,561 $ 561 $ (33 ) $ 19,089 Other debt securities 482 13 - 495 Total held to maturity $ 19,043 $ 574 $ (33 ) $ 19,584 Included in unrealized losses are market losses on securities that have been in a continuous unrealized loss position for twelve months or more and those securities that have been in a continuous unrealized loss position for less than twelve months. The table below details the aggregate unrealized losses and aggregate fair value of the underlying securities whose fair values are below their amortized cost at December 31, 2017 and 2016. As of December 31, 2017 Less than 12 Months 12 Months or longer Total Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count (Dollars in thousands) Available for Sale: Obligations of U.S. government agencies and corporations $ 3,975 $ (17 ) 3 $ 1,996 $ (3 ) 2 $ 5,971 $ (20 ) 5 Federal agency mortgage-backed securities 20,099 (162 ) 12 3,416 (89 ) 4 23,515 (251 ) 16 Federal agency collateralized mortgage obligations - - - 109 (2 ) 1 109 (2 ) 1 Total Available for Sale........ $ 24,074 $ (179 ) 15 $ 5,521 $ (94 ) 7 $ 29,595 $ (273 ) 22 Held to Maturity: Obligations of states and political subdivisions $ 195 $ (1 ) 1 $ 315 $ (3 ) 1 $ 510 $ (4 ) 2 Total Held to Maturity.......... $ 195 $ (1 ) 1 $ 315 $ (3 ) 1 $ 510 $ (4 ) 2 As of December 31, 2016 Less than 12 Months 12 Months or longer Total Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count (Dollars in thousands) Available for Sale: Obligations of U.S. government agencies and corporations $ 3,984 $ (5 ) 4 $ - $ - - $ 3,984 $ (5 ) 4 Obligations of states and political subdivisions - - - 872 (10 ) 1 872 (10 ) 1 Federal agency mortgage-backed securities 10,667 (175 ) 11 39 (1 ) 1 10,706 (176 ) 12 Federal agency collateralized mortgage obligations 159 (1 ) 1 - - - 159 (1 ) 1 Total Available for Sale........ $ 14,810 $ (181 ) 16 $ 911 $ (11 ) 2 $ 15,721 $ (192 ) 18 Held to Maturity: Obligations of states and political subdivisions $ 2,289 $ (33 ) 7 $ - $ - - $ 2,289 $ (33 ) 7 Total Held to Maturity.......... $ 2,289 $ (33 ) 7 $ - $ - - $ 2,289 $ (33 ) 7 As of December 31, 2017, management believes that the estimated fair value of the securities disclosed above is primarily dependent upon the movement in market interest rates, particularly given the minimal inherent credit risk associated with the issuers of these securities and that the unrealized losses in these portfolios are not the result of deteriorating credit within any investment category. Securities issued by states and political subdivisions are all rated investment grade. Each holding is reviewed quarterly for impairment by management and our third party investment advisor. All mortgage backed securities and collateralized mortgage obligations are issued by U.S. government sponsored agencies; there are no holdings of private label mortgage backed securities or securities backed by loans classified as “Alt-A” or “Subprime”. Although the fair value will fluctuate as market interest rates move, management believes that these fair values will recover as the underlying portfolios mature. The Company evaluates a variety of factors in concluding whether securities are other-than-temporarily impaired. These factors include, but are not limited to, the type and purpose of the bond, the underlying rating of the bond issuer, and the presence of credit enhancements (i.e. state guarantees, municipal bond insurance, collateral requirements, etc.). The Company does not intend to sell any of these securities and it is not likely to be required to sell any of these securities before recovery. Management does not believe any unrealized loss on individual securities, as of December 31, 2017 and 2016, represents other than temporary impairment. For the years ended December 31, 2017 and 2016 gross gains of $416 thousand and $795 thousand, respectively, were realized from the sale of available for sale securities. Securities totaling $69.0 million and $42.0 million were pledged at December 31, 2017 and 2016, respectively, to secure public fund deposits. In addition, securities pledged to secure borrowings by the Bank totaled $20 thousand and $40 thousand as of December 31, 2017 and December 31, 2016, respectively. The amortized cost and fair value of securities as of December 31, 2017 by contractual maturity are shown below. Certain of these investment securities have call features which allow the issuer to call the security prior to its maturity date at the issuer’s discretion. December 31, 2017 Available for Sale Securities Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (Dollars in thousands) Due within one year $ 18,997 $ 18,993 $ - $ - Due after one year through five years 1,994 1,978 1,208 1,225 Due after five years through ten years 1,500 1,583 1,826 1,890 Due after ten years 4,218 4,386 15,631 16,550 26,709 26,940 18,665 19,665 Federal agency collateralized mortgage obligations 111 109 - - Federal agency mortgage-backed securities 25,524 25,289 - - Money market mutual fund 35 35 - - Total $ 52,379 $ 52,373 $ 18,665 $ 19,665

Loans Receivable and Related Al

Loans Receivable and Related Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Loans Receivable and Related Allowance for Loan Losses	Note 5—Loans Receivable and Related Allowance for Loan Losses Loans receivable consist of the following at December 31, 2017 and 2016. December 31, 2017 2016 (Dollars in thousands) Commercial: Commercial and industrial $ 85,395 $ 89,625 Commercial mortgage 235,946 223,315 Commercial construction 30,866 22,408 Total commercial 352,207 335,348 Residential mortgage loans 133,727 110,538 Consumer: Home equity lines of credit 19,295 24,669 Other consumer loans 13,780 17,514 Total consumer 33,075 42,183 Total loans 519,009 488,069 Allowance for loan losses (3,405 ) (3,330 ) Net deferred loan cost (fees) (82 ) 174 Total loans receivable, net $ 515,522 $ 484,913 In June 2017, the Company purchased $7.0 million in performing residential real estate loans, at a slight acquisition discount totaling $35 thousand and in December 2017, purchased $9.0 million of performing residential real estate loans, including acquisition premiums of $117 thousand. Previously, in August, 2016, the Company increased its loans outstanding through the acquisition of $64.6 million, including acquisition premiums of $197 thousand, of various types of performing commercial loans within the Bank’s market area. In June 2016, the Company purchased $12.7 million, including acquisition premiums of $280 thousand, of performing residential real estate loans. All portfolios of purchased loans were underwritten using similar standards as the Bank uses for its organic portfolio. The following tables summarize the activity in the allowance for loan losses by loan class for the years ended December 31, 2017 and 2016: For the year ended December 31, 2017 Allowance for Loan Losses (Dollars in thousands) Beginning Balance Charge-offs Recoveries Provision for loan losses Ending Balance Commercial and industrial $ 647 $ (281 ) $ 4 $ 296 $ 666 Commercial mortgage 1,051 (30 ) - 57 1,078 Commercial construction 113 - - 34 147 Residential mortgage loans 452 - - 172 624 Home equity lines of credit 188 - 2 (87 ) 103 Other consumer loans 97 (24 ) 19 (18 ) 74 Unallocated 782 - - (69 ) 713 Total $ 3,330 $ (335 ) $ 25 $ 385 $ 3,405 For the year ended December 31, 2016 Allowance for Loan Losses (Dollars in thousands) Beginning Balance Charge-offs Recoveries Provision for loan losses Ending Balance Commercial and industrial $ 631 $ (75 ) $ 21 $ 70 $ 647 Commercial mortgage 831 (72 ) 2 290 1,051 Commercial construction 56 - - 57 113 Residential mortgage loans 259 - - 193 452 Home equity lines of credit 167 - 9 12 188 Other consumer loans 84 (75 ) 15 73 97 Unallocated 767 - - 15 782 Total $ 2,795 $ (222 ) $ 47 $ 710 $ 3,330 The following tables present the balance in the allowance for loan losses at December 31, 2017 and 2016 disaggregated on the basis of the Company’s impairment method by class of loans receivable along with the balance of loans receivable by class disaggregated on the basis of the Company’s impairment methodology: December 31, 2017 Allowance for Loan Losses Loans Receivables (Dollars in thousands) Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Commercial and industrial $ 666 $ 42 $ 624 $ 85,395 $ 582 $ 84,813 Commercial mortgage 1,078 - 1,078 235,946 346 235,600 Commercial construction 147 - 147 30,866 - 30,866 Residential mortgage loans 624 140 484 133,727 637 133,090 Home equity lines of credit 103 - 103 19,295 - 19,295 Other consumer loans 74 - 74 13,780 3 13,777 Unallocated 713 - 713 - - - Total $ 3,405 $ 182 $ 3,223 $ 519,009 $ 1,568 $ 517,441 December 31, 2016 Allowance for Loan Losses Loans Receivables (Dollars in thousands) Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Commercial and industrial $ 647 $ - $ 647 $ 89,625 $ 705 $ 88,920 Commercial mortgage 1,051 - 1,051 223,315 6 223,309 Commercial construction 113 - 113 22,408 - 22,408 Residential mortgage loans 452 47 405 110,538 637 109,901 Home equity lines of credit 188 - 188 24,669 14 24,655 Other consumer loans 97 - 97 17,514 51 17,463 Unallocated 782 - 782 - - - Total $ 3,330 $ 47 $ 3,283 $ 488,069 $ 1,413 $ 486,656 The following tables summarize information in regard to impaired loans by loan portfolio class as of December 31, 2017 and 2016 as well as for the years then ended, respectively: December 31, 2017 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 251 $ 906 $ - $ 705 $ 1,268 $ - Commercial mortgage 346 418 - 6 57 - Commercial construction - - - - - - Residential mortgage loans - - - - - - Home equity lines of credit - - - 14 16 - Other consumer loans 3 3 - 51 80 - With an allowance recorded: Commercial and industrial $ 331 $ 331 $ 42 $ - $ - $ - Commercial mortgage - - - - - - Commercial construction - - - - - - Residential mortgage loans 637 637 140 637 637 47 Home equity lines of credit - - - - - - Other consumer loans - - - - - - Total: Commercial and industrial $ 582 $ 1,237 $ 42 $ 705 $ 1,268 $ - Commercial mortgage 346 418 - 6 57 - Commercial construction - - - - - - Residential mortgage loans 637 637 140 637 637 47 Home equity lines of credit - - - 14 16 - Other consumer loans 3 3 - 51 80 - Total $ 1,568 $ 2,295 $ 182 $ 1,413 $ 2,058 $ 47 For the year ended December 31, 2017 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 495 $ 4 $ 1,042 $ 9 Commercial mortgage 88 4 1,200 54 Commercial construction - - - - Residential mortgage loans - - 28 1 Home equity lines of credit - - 94 4 Other consumer loans 3 - 170 7 With an allowance recorded: Commercial and industrial $ 196 $ - $ 503 $ 19 Commercial mortgage 42 - 331 16 Commercial construction - - - - Residential mortgage loans 637 23 638 24 Home equity lines of credit - - - - Other consumer loans - - - - Total: Commercial and industrial $ 691 $ 4 $ 1,545 $ 28 Commercial mortgage 130 4 1,531 70 Commercial construction - - - - Residential mortgage loans 637 23 666 25 Home equity lines of credit - - 94 4 Other consumer loans 3 - 170 7 Total $ 1,461 $ 31 $ 4,006 $ 134 The following table presents non-accrual loans by classes of the loan portfolio as of December 31, 2017 and 2016: December 31, 2017 2016 (Dollars in thousands) Commercial and industrial $ 435 $ 705 Commercial mortgage 200 6 Home equity lines of credit - 14 Other consumer loans 3 51 Total loans $ 638 $ 776 The Company’s policy for interest income recognition on non-accrual loans is to recognize income under the cash basis when the loans are both current and the collateral on the loan is sufficient to cover the outstanding obligation to the Company. The Company will not recognize income if these factors do not exist. Interest that would have been accrued on non-accruing loans under the original terms but was not recognized as interest income totaled $72 thousand and $93 thousand for the years ended December 31, 2017 and 2016, respectively. The following tables present the classes of the loan portfolio summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company’s internal risk rating system as of December 31, 2017 and 2016: December 31, 2017 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial: Commercial and industrial $ 84,811 $ - $ 584 $ - $ 85,395 Commercial mortgage 235,114 - 832 - 235,946 Commercial construction 30,866 - - - 30,866 Residential mortgage loans 133,727 - - - 133,727 Consumer: Home equity lines of credit 19,295 - - - 19,295 Other consumer loans 13,780 - - - 13,780 Total $ 517,593 $ - $ 1,416 $ - $ 519,009 December 31, 2016 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial: Commercial and industrial $ 88,503 $ - $ 1,122 $ - $ 89,625 Commercial mortgage 221,544 - 1,771 - 223,315 Commercial construction 22,408 - - - 22,408 Residential mortgage loans 110,538 - - - 110,538 Consumer: Home equity lines of credit 24,655 - 14 - 24,669 Other consumer loans 17,463 - 51 - 17,514 Total $ 485,111 $ - $ 2,958 $ - $ 488,069 The performance and credit quality of the loan portfolio is also monitored by analyzing the age of the loans receivable as determined by the length of time a recorded payment is past due. The following tables present the classes of the loan portfolio summarized by the past due status as of December 31, 2017 and 2016: December 31, 2017 30-59 Days Past Due 60-89 Days Past Due Greater Than 90 Days Total Past Due Current Total Loans Receivables (Dollars in thousands) Commercial: Commercial and industrial $ 36 $ 284 $ 698 $ 1,018 $ 84,377 $ 85,395 Commercial mortgage 2,206 - 200 2,406 233,540 235,946 Commercial construction - - - - 30,866 30,866 Residential mortgage loans 329 - - 329 133,398 133,727 Consumer: Home equity lines of credit - - - - 19,295 19,295 Other consumer loans 33 65 3 101 13,679 13,780 Total $ 2,604 $ 349 $ 901 $ 3,854 $ 515,155 $ 519,009 December 31, 2016 30-59 Days Past Due 60-89 Days Past Due Greater Than 90 Days Total Past Due Current Total Loans Receivables (Dollars in thousands) Commercial: Commercial and industrial $ 293 $ 60 $ 632 $ 985 $ 88,640 $ 89,625 Commercial mortgage - - 6 6 223,309 223,315 Commercial construction - - - - 22,408 22,408 Residential mortgage loans - 104 - 104 110,434 110,538 Consumer: Home equity lines of credit - - - - 24,669 24,669 Other consumer loans 17 - 4 21 17,493 17,514 Total $ 310 $ 164 $ 642 $ 1,116 $ 486,953 $ 488,069 As of December 31, 2017 there was one loan totaling $263 thousand that is past due 90 days and still accruing interest. This single loan relationship was paid off in its entirety in January 2018, with no losses incurred. As of December 31, 2016, there were no loans 90 days past due and still accruing interest. Troubled Debt Restructurings The Company may grant a concession or modification for economic or legal reasons related to a borrower’s declining financial condition that it would not otherwise consider, resulting in a modified loan which is then identified as a troubled debt restructuring (“TDR”). The Company may modify loans through rate reductions, extensions of maturity, interest only payments, or payment modifications to better match the timing of cash flows due under the modified terms with the cash flows from the borrowers’ operations. Loan modifications are intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. TDRs are considered impaired loans for purposes of calculating the Company’s allowance for loan losses. The Company identifies loans for potential restructure primarily through direct communication with the borrower and evaluation of the borrower’s financial statements, revenue projections, tax returns, and credit reports. Even if the borrower is not presently in default, management will consider the likelihood that cash flow shortages, adverse economic conditions, and negative trends may result in a payment default in the near future. The following table reflects information regarding TDR’s entered into by the Company for the period ended December 31, 2017. For the year ended December 31, 2017 Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments (Dollars in thousands) Troubled debt restructurings: Commercial and industrial 2 $ 221 $ 206 Commercial mortgage 1 164 149 Total 3 $ 385 $ 355 For the year ended December 31, 2017, there were two loans, involving one borrower, modified into trouble debt restructurings related to a participation in a combined loan relationship whereby the Bank and all other banks involved entered into an agreement to accept a payment modification which resulted in a loss recorded by the Bank of $30 thousand and one loan for $55 thousand, modified into an interest only payment which did not result in any losses incurred. For the year ended December 31, 2016 there were no new TDR’s entered into. The following tables summarize the balance of outstanding TDR’s at December 31, 2017 and December 31, 2016: Number of Loans Performing TDR's Non-Performing TDR's Total TDRs (Dollars in thousands) December 31, 2017 Commercial and Industrial 2 $ 147 $ 55 $ 202 Commercial mortgage loans 1 146 - 146 Residential mortgage loans 1 637 - 637 Total 4 $ 930 $ 55 $ 985 Number of Loans Performing TDR's Non-Performing TDR's Total TDRs (Dollars in thousands) December 31, 2016 Residential mortgage loans 1 $ 637 $ - $ 637 Home equity lines of credit 1 - 14 14 Other consumer loans 1 - 20 20 Total 3 $ 637 $ 34 $ 671 As of December 31, 2017, there was one commercial loan TDR totaling $55 thousand which was in default and is classified as non-accrual. As of December 31, 2017 and 2016 there were no other TDR’s which were subsequently in default and there were no commitments to lend additional funds to debtors whose terms have been modified in TDR’s. The carrying amount of foreclosed residential mortgage properties held was $466 thousand as of December 31, 2017. There were no consumer mortgage loans collateralized by residential real estate property that were in the process of foreclosure as of December 31, 2017.

Transactions with Executive Off

Transactions with Executive Officers, Directors and Principal Shareholders	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Transactions with Executive Officers, Directors and Principal Shareholders	Note 6—Transactions with Executive Officers, Directors and Principal Shareholders The Company has had, and may be expected to have in the future, banking transactions in the ordinary course of business with its executive officers, directors, principal shareholders, their immediate families and affiliated companies (commonly referred to as related parties), on the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with others and do not involve more than the normal risk of collectability. Activity of these loans is as follows: December 31, 2017 2016 (Dollars in thousands) Balance, beginning of year $ 5,466 $ 5,722 New loans 2,549 2,174 Loans of Retired Officers (773 ) - Repayments (1,686 ) (2,430 ) Balance at end of year $ 5,556 $ 5,466 Deposits of related parties totaled $9.5 million and $7.7 million at December 31, 2017 and 2016, respectively.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2017
Property Plant And Equipment [Abstract]
Premises and Equipment	Note 7—Premises and Equipment The components of premises and equipment at December 31, 2017 and 2016 are as follows: December 31, 2017 2016 (Dollars in thousands) Buildings $ 1,143 $ 1,143 Leasehold improvements 1,424 1,422 Furniture, fixtures and equipment 799 818 Automobiles 20 24 Computer equipment and data processing software 765 736 4,151 4,143 Accumulated depreciation (2,544 ) (2,388 ) $ 1,607 $ 1,755 Depreciation expense for the years ended December 31, 2017 and 2016 was $262 thousand and $309 thousand, respectively.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Banking And Thrift [Abstract]
Deposits	Note 8—Deposits The components of deposits at December 31, 2017 and 2016 are as follows: As of December 31, 2017 2016 (Dollars in thousands) Demand, non-interest bearing $ 65,634 $ 54,817 Demand, interest-bearing 29,918 57,168 Money market and savings accounts 145,355 113,655 Time, $100 and over 84,358 45,311 Time, other 197,885 196,737 $ 523,150 $ 467,688 Included in time, other at December 31, 2017 and 2016 are brokered deposits of $120.2 million, and $138.8 million, respectively. As of December 31, 2017 and 2016 aggregate time deposits which exceed the $250 thousand FDIC insurance limit were $32.1 million and $8.0 million, respectively. At December 31, 2017, the scheduled maturities of time deposits are as follows: December 31, 2017 (Dollars in thousands) 2018 $ 155,229 2019 76,431 2020 24,421 2021 17,942 2022 8,220 Thereafter - $ 282,243

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Borrowings	Note 9—Borrowings As of December 31, 2017 and 2016, the Company had an unused borrowing facility with a correspondent bank totaling $10 million, of which $2 million is available unsecured. The remaining $8 million is a secured line of credit with security provided, when utilized, by a pledge of the Company’s investment assets. The Bank has been a member of FHLB since March 2008. Advances are collateralized by restricted investments in FHLB bank stock totaling $1.3 million and $3.1 million at December 31, 2017 and 2016, respectively, by a specific pledge of the Bank’s investment assets and by a blanket lien on the Bank’s loan portfolio. At December 31, 2017 and 2016, respectively, the Bank had borrowing capacity with the FHLB, of $221 million and $206 million, respectively, with advances outstanding as of those dates of $24.6 million and $68.2 million, respectively. Investment securities with a carrying value of $20 thousand and $40 thousand were specifically pledged as collateral to secure FHLB borrowings as of December 31, 2017 and 2016, respectively. Short-Term Borrowings At December 31, 2017 and 2016, First Priority had short-term borrowings totaling $15.6 million and $56.2 million, respectively, consisting of advances from the FHLB with an original maturity of less than a year. Advances from the FHLB at December 31, 2017 are collateralized by our investment in the common stock of the FHLB and by a blanket lien on selected mortgage loans within the Bank’s portfolio. The following table outlines First Priority’s various sources of short-term borrowed funds at or for the years ended December 31, 2017 and 2016. The maximum balance represents the highest indebtedness for each category of short-term borrowed funds at any month-end during each of the years shown. December 31, 2017 2016 (Dollars in thousands) Federal funds purchased: Balance at year end $ - $ - Weighted average rate at year end - - Maximum month-end balance $ 19 $ - Average daily balance during the year $ 3 $ 2 Weighted average rate during the year 1.52 % 0.76 % FHLB short-term borrowings: Balance at year end $ 15,625 $ 56,164 Weighted average rate at year end 1.54 % 0.74 % Maximum month-end balance $ 70,400 $ 60,688 Average daily balance during the year $ 26,446 $ 22,508 Weighted average rate during the year 1.15 % 0.61 % Long-Term Debt Long-term debt, consisting of FHLB advances with an original maturity of one year or greater, totaled $9.0 million and $12.0 million as of December 31, 2017 and 2016, respectively. Average balances outstanding totaled $10.9 million and $14.1 million, respectively, with an average cost of 1.30% and 1.12%, respectively, for the years ended December 31, 2017 and 2016. Advances are made pursuant to several different credit programs offered from time to time by the FHLB. At December 31, 2017, scheduled maturities of long-term borrowings with the FHLB are as follows: Balance Weighted Average Rate (Dollars in thousands) 2018 $ 3,000 1.31 % 2019 2,000 1.64 % 2020 4,000 1.75 % $ 9,000 1.58 %

Subordinated Debt

Subordinated Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Subordinated Debt	Note 10 —Subordinated Debt On November 13, 2015, First Priority Bank entered into Subordinated Note Purchase Agreements with five accredited investors under which the Bank issued subordinated notes (the “Notes”) totaling $9.5 million, resulting in net proceeds of approximately $9.2 million after issuance costs of $318 thousand. The Notes have a maturity date of November 30, 2025, and will bear interest at a fixed rate of 7.00% per annum. The Notes are non-callable for an initial period of five years and include provisions for redemption pricing between 101.5% and 100.5% of the total of $9.5 million, plus accrued but unpaid interest thereon up to but excluding the redemption date, if called after five years but prior to the maturity date.

Lease Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Lease Commitments	Note 11—Lease Commitments Pursuant to the terms of non-cancellable lease agreements in effect at December 31, 2017, pertaining to premises, future minimum lease payments by year and in the aggregate, under these lease agreements, are as follows: Minimum Lease Payments (Dollars in thousands) 2018 $ 1,246 2019 1,266 2020 1,172 2021 971 2022 878 Thereafter 2,832 $ 8,365 The minimum lease payments shown above include payments for the entire current term. Option periods for which the Company has an option to extend the lease beyond current periods have not been included as part of the minimum lease payments. Lease expense for all leases for the years ended December 31, 2017 and 2016 was $1.09 million and $1.13 million, respectively. During 2016, the Bank closed its Plumstead branch office location upon reaching the end of the initial lease term.

Severance and Employment Agreem

Severance and Employment Agreements	12 Months Ended
	Dec. 31, 2017
Restructuring And Related Activities [Abstract]
Severance and Employment Agreements	Note 12—Severance and Employment Agreements On December 19, 2013, the board of directors of the Company approved severance agreements between the Company and participating senior officers. Under the First Priority Bank Severance Plan (the “Severance Plan”), which is a broad-based severance plan applicable to certain employees of the Company and the Bank. Each participating senior officer will receive a severance benefit equal to continued base salary, as defined, for a period ranging between six and eighteen months in the event that the officer’s employment is terminated within one year following a “change in control” as a result of a work force reduction or job elimination. In addition, each senior officer also received a grant of stock options under the Company’s existing Stock Compensation Program. These issued options, totaling 355,000, which vest only upon a change in control of the Company, will remain outstanding for a period of ten years, expiring as of December 19, 2023, at an exercise price of $5.25. On December 19, 2013, as part of the Company’s long-term incentive compensation program, each senior officer also received a grant of restricted stock under the Company’s Stock Compensation Program, totaling 89,500 shares in aggregate, which vested three years from the grant date. The Company has an employment agreement with its president, who does not participate in the previously mentioned Severance Plan. The employment agreement provides for a three year term that is automatically renewed on each anniversary date of the agreement for an additional year unless either party gives notice to the other of non-renewal at least 60 days prior to such anniversary date. The agreement provides for a base salary and benefits commensurate with other First Priority executive officers, including health insurance, vacation, use of a company vehicle, supplemental life insurance and disability coverage, among other things. The agreement can be terminated for “cause” as defined in the agreement. If First Priority were to terminate its president’s employment without cause, or if the president were to terminate his employment for “good reason”, as defined, including but not limited to, change in control of First Priority, he will be entitled to receive post termination benefits as follows: an amount equal to three (3) times the sum of (i) the highest salary paid to him in the year of termination or prior two calendar years and (ii) the highest bonus paid to him in one of the three calendar years prior to termination and (iii) an adjustment for benefits.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Shareholders' Equity	Note 13—Shareholders’ Equity The Company amended its articles of incorporation, effective May 4, 2016, to increase the number of authorized shares of its common stock, $1.00 par value, from 10,000,000 shares to 20,000,000 shares. The amendment was approved by shareholders at the 2016 annual meeting of shareholders held on May 3, 2016. As of December 31, 2017 and 2016 the Company had 3,404 shares of 9% fixed rate, Cumulative Perpetual Preferred Stock outstanding totaling $3.4 million. On January 22, 2016, First Priority redeemed $6.0 million of its outstanding Preferred Stock for a total redemption price of $1,016.75 per share which included accrued dividends. This redemption included all shares of outstanding Series A (4,579 shares; par value $1,000) and Series B (229 shares; par value $1,000); and approximately 25.9% of Series C (1,192 shares of 4,596 shares outstanding; par value $1,000). The shares of Series C were selected for redemption on a pro rata basis. After the completion of these redemptions, 3,404 shares of Series C Preferred Stock are outstanding as of December 31, 2017. The Preferred Stock has no maturity date and ranks senior to common stock with respect to dividends and upon liquidation, dissolution, or winding up. The Company may redeem the Preferred Stock, in whole or in part, at its liquidation preference plus accrued and unpaid dividends.

Stock Compensation Program

Stock Compensation Program	12 Months Ended
	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Compensation Program	Note 14—Stock Compensation Program In 2005, the Company adopted the 2005 Stock Compensation Program, which was amended at the Company’s annual meeting on April 23, 2009 as the 2009 Stock Compensation Program (the “Program”) and further amended effective March 18, 2010. The Program allows equity benefits to be awarded in the form of Incentive Stock Options, Compensatory Stock Options or Restricted Stock. The Program authorizes the Board of Directors to grant options up to an aggregate maximum of 1,207,957 shares to officers, other employees and directors of the Company, including 382,957 shares which were authorized for grant under this plan as a result of the merger with Affinity. Only employees of the Company will be eligible to receive Incentive Stock Options and such grants are subject to the limitations under Section 422 of the Internal Revenue Code. All stock options granted under the Program fully vest in four years from the date of grant (or potentially earlier upon a change of control), excluding options issued in regards to the Company’s Severance Plan which vest only upon change in control, and options terminate ten years from the date of the grant. The exercise price of the options granted is the fair value of a share of common stock at the time of the grant. A summary of the Stock Option Plan is presented below: For the Years Ended December 31, 2017 2016 Options to Purchase Common Shares Weighted Average Exercise Price Options to Purchase Common Shares (1) Weighted Average Exercise Price Outstanding at beginning of year 955,060 $6.35 970,193 $6.41 Granted during year 7,500 7.92 37,500 5.93 Forfeited/cancelled during the year (40,000) 6.19 (32,500) 5.91 Exercised - - (2,000) 5.73 Expired (114,690) 10.08 (18,133) 9.65 Outstanding at end of year 807,870 $5.84 955,060 $6.35 Exercisable at end of year 239,870 $6.62 354,560 $7.74 (1) Included in options outstanding and exercisable at December 31, 2016 are 100,000 organizer options, with an exercise price of $10.00 per share which expired on October 18, 2017. The weighted average remaining contractual lives of all outstanding stock options and exercisable at December 31, 2017 and 2016 were 5.46 years and 3.05 years, respectively, and 5.84 years and 2.98 years, respectively. The aggregate intrinsic value of all outstanding stock options based on the closing stock price was $2.5 million as of December 31, 2017, including $586 thousand related to currently exercisable options, and $705 thousand as of December 31, 2016, including $150 thousand related to exercisable options. The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: 2017 2016 Dividend yield 0.0% 0.0% Expected life 7 years 7 years Expected volatility 23% 26% Risk-free interest rate 2.04% 1.63% Weighted average fair value $2.34 $1.83 For option grants to individual employees, the Company assumes no forfeitures. For option grants made to a group of employees, a 10% forfeiture rate is typically assumed at the date of the grant, and compared to actual forfeitures on an annual basis. The dividend yield assumption is based on the Company’s history and expectation of dividend payouts. Due to the Company’s lack of sufficient historical exercise data and the limited period of time for which shares have been issued, the “simplified” method is used to determine the expected life of options, calculated as the average of the sum of the vesting term and original contractual term for all periods presented. The expected volatility percentage is based on the average expected volatility of similar public financial institutions in the Company’s market area. The risk-free interest rates for periods within the contractual life of the awards are based on the U.S. Treasury yield curve in effect at the time of grant. As of December 31, 2017, there was $146 thousand of unrecognized compensation cost related to non-vested stock options granted after January 1, 2007, excluding those stock options issued in conjunction with the severance plan (see Note 12). That cost is expected to be recognized over a weighted average period of 1.72 years. There was no tax benefit recognized related to this stock-based compensation. There are 355,000 stock options issued in connection with the termination of the previously executed change in control agreements and the adoption of the severance plan with $576 thousand of unrecognized compensation cost which will only be recognized if a change in control occurs, based on the options which remain outstanding and are probable to vest at that time. During 2015, included in the options granted, there were 99,000 performance options issued to various employees. Certain performance criteria must be achieved over the performance period in order for the option granted to vest. Performance is analyzed on a quarterly basis to determine if the specific required performance is more likely than not to be achieved. Based on this evaluation, 82,500 performance options were cancelled to date, leaving 16,500 outstanding as of December 31, 2017. These non-vested options may be further adjusted in the future if the performance measures are not met. Restricted stock grants fully vest after a minimum of three years from the date of grant (or potentially earlier upon a change of control or retirement after the age of 66), subject to the recipient remaining an employee of the Company. Directors are also granted restricted stock as part of their compensation for their services on the Board of Directors, or related Committees, as approved by the Compensation Committee of the Board. Upon issuance of the shares, resale of the shares is restricted during the vesting period, during which the shares may not be sold, pledged, or otherwise disposed of. Prior to the vesting date and in the event the recipient terminates association with Company for any reasons other than death, disability or change of control, the recipient forfeits all rights to the shares that would otherwise be issued under the grant. Compensation expense related to restricted stock awards granted under the Plan is determined at the date of the award based on the estimated fair value of the shares and is amortized over the vesting period. As of December 31, 2017, there was $520 thousand of unrecognized compensation cost related to restricted stock, which will be amortized through July 31, 2021. A summary of restricted stock award activity is presented below for the years presented: For the Years Ended December 31, 2017 2016 Outstanding unvested shares at beginning of year 89,450 165,474 Shares granted during year 52,700 36,250 Shares forfeited/cancelled during year (4,450 ) (725 ) Vested Shares during this period (13,550 ) (111,549 ) Outstanding unvested shares at end of year 124,150 89,450

Federal Income Taxes

Federal Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal Income Taxes	Note 15—Federal Income Taxes Deferred tax assets (“DTA”) are reduced by a valuation allowance if, based on the weight of evidence available, it is more likely than not that some portion or all of a deferred tax asset will not be realized. When determining the need for a valuation allowance, the Company assessed the possible sources of taxable income available under tax law to realize a tax benefit for deductible temporary differences and carryforwards, as defined by Accounting Standards Codification (“ASC”) Topic 740-10-30-18. This guidance related to when a valuation allowance on the DTA should be maintained, generally provides that the valuation allowance should be reversed, when in the judgment of management, it is more likely than not that the DTA will be realized. First Priority has determined that it is more likely than not that the net deferred tax asset will be realized, and therefore, in its judgment, a valuation allowance related to net deferred tax assets is not required. When evaluating the Company’s deferred tax asset and related valuation allowance, management considered the four sources of taxable income identified in ASC Topic 740-10-30-18 including: • Future reversals of existing taxable temporary differences. • Taxable income in prior carryback year(s) if carryback is permitted under the tax law. • Tax-planning strategies (see paragraph 740-10-30-19) that would, if necessary, be implemented • Future taxable income exclusive of reversing temporary differences and carryforwards Additionally, the Company also considers tax planning strategies which could accelerate taxable income and allow the Company to take advantage of future deductible differences. A qualified tax-planning strategy is an action that (a) is prudent and feasible; (b) a company ordinarily might not take, but would take to prevent an operating loss or tax credit carryforward from expiring unused; and (c) would result in the realization of deferred tax assets. The components of the net deferred tax asset at December 31, 2017 and 2016 are as follows: December 31, 2017 2016 (Dollars in thousands) Deferred tax assets: Allowance for loan losses $ 583 $ 701 Organization and start-up costs 35 75 Net operating loss carryforwards - 833 Net operating loss carryforwards--acquired 231 670 Contribution carryforward - 9 Non-qualified stock option expense 208 283 Other real estate owned deferred costs 18 215 Unrealized loss on investment securities 3 21 Alternative minimum tax carryforward - 199 Property and equipment 35 35 Unfunded loan commitment reserve 7 12 Total Deferred Tax Assets 1,120 3,053 Deferred tax liabilities: Acquisition accounting 66 135 Cash basis conversions 120 206 Discount accretion on investment securities 11 15 Total Deferred Tax Liabilities 197 356 Net Deferred Tax Asset $ 923 $ 2,697 First Priority’s net deferred tax asset as of December 31, 2017 includes $231 thousand related to net operating losses (“NOL”) acquired related to the acquisition of Prestige Community Bank and Affinity Bancorp which are subject to certain limitations and expire in 2028 and 2032, respectively, if not fully utilized. The acquired NOL carryforward balance of $1.1 million remains available to reduce future federal income taxes as of December 31, 2017. The following table presents the income tax expense for the years ended December 31, 2017 and 2016. For the year ended December 31, 2017 2016 (Dollars in thousands) Current tax expense: Federal $ 227 $ 94 State 19 46 Deferred Income tax expense: Federal 1,755 988 Income tax expense $ 2,001 $ 1,128 Reconciliation of the statutory federal income tax expense computed at 34% to the income tax expense included in the consolidated statements of income is as follows: For the year ended December 31, 2017 2016 (Dollars in thousands) Federal income tax expense at statutory rate of 34%: $ 1,516 $ 1,165 Increase (decrease) in taxes resulting from: Tax exempt interest income, net (159 ) (109 ) Tax exempt income on bank owned life insurance (24 ) (26 ) Applicable state income taxes 13 30 Stock compensation adjustment for expired options (3 ) 30 Tax Cut and Jobs Act adjustment to deferred tax asset 571 - Other 87 38 Federal income tax expense $ 2,001 $ 1,128 The year ended December 31, 2017 included a non-recurring non-cash reduction in the value of First Priority’s net deferred tax asset which resulted in a charge of $571 thousand and is included in the provision for income tax expense. This income tax adjustment was a result of the Tax Cuts and Jobs Act, enacted on December 22, 2017, which lowered First Priority’s future maximum corporate tax rate from 34 percent to 21 percent. Although this reduced rate will provide tax savings in future periods, this charge was required to write-down First Priority’s DTA which was previously valued based upon the projection of a 34 percent future tax benefit. The Company’s policy

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Note 16—Financial Instruments with Off-Balance Sheet Risk The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheet. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. At December 31, 2017 and 2016, outstanding commitments to extend credit consisting of total unfunded commitments under lines of credit were $115.2 million and $98.2 million, respectively. In addition, as of each of these dates, there were $2.3 million and $958 thousand of performance standby letters of credit outstanding, respectively, and $1.7 million of financial standby letters of credit as of each respective date, issued on behalf of the Bank’s customers. As of December 31, 2017 the Company did not have any deposit letters of credit outstanding; however as of December 31, 2016, the Company had deposit letters of credit totaling $16.0 million, issued by the Federal Home Loan Bank of Pittsburgh (“FHLB”), as required to provide collateral on certain municipal deposits maintained at the Bank. These deposit letters of credit were secured by a blanket lien on selected mortgage loans within First Priority Bank’s portfolio. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Bank evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank upon extension of credit, is based on management’s credit evaluation. Collateral held varies but may include residential or commercial real estate, accounts receivable, inventory and equipment.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2017
Banking And Thrift [Abstract]
Regulatory Matters	Note 17—Regulatory Matters The Bank’s capital amounts (dollars in thousands) and ratios at December 31, 2017 and 2016 are presented below: Actual Minimum Capital Requirement To be Well Capitalized under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2017 Total capital (to risk-weighted assets) $ 59,886 12.15 % $ 39,434 >8.0 % $ >49,292 >10.0 % Tier 1 capital (to risk-weighted assets) 47,215 9.58 >29,575 >6.0 >39,434 >8.0 Tier 1 common equity capital (to risk-weighted assets) 47,215 9.58 >22,182 >4.5 >32,040 >6.5 Tier 1 capital (to total assets) 47,215 8.08 >23,384 >4.0 >29,230 >5.0 December 31, 2016 Total capital (to risk-weighted assets) $ 55,900 12.07 % $ >37,064 >8.0 % $ >46,330 >10.0 % Tier 1 capital (to risk-weighted assets) 43,328 9.35 >27,798 >6.0 >37,064 >8.0 Tier 1 common equity capital (to risk-weighted assets) 43,328 9.35 >20,848 >4.5 >30,114 >6.5 Tier 1 capital (to total assets) 43,328 7.87 >22,023 >4.0 >27,528 >5.0 The federal banking agencies approved rules that implemented the Dodd-Frank requirements and certain other regulatory capital reforms which were designed to enhance such requirements and implement the revised standards of the Basel Committee on Banking Supervision, commonly referred to as Basel III. Under these rules, in order to avoid limitations on capital distributions (including dividend payments and certain discretionary bonus payments to executive officers), a banking organization must hold a capital conservation buffer comprised of common equity tier 1 capital above its minimum risk-based capital requirements in an amount greater than 2.5% of total risk-weighted assets. The capital contribution buffer requirements is being phased in over a three-year period beginning January 1, 2016 and was 0.625% in 2016, 1.25% during 2017 and is 1.875% in 2018. The capital buffer requirement, on a fully phased-in basis as of January 1, 2019, effectively raises the minimum required common equity Tier 1 capital ratio to 7.0% (5.125% in 2016 and 5.75% in 2017), the Tier 1 capital ratio to 8.5% (6.625% in 2016 and 7.25% in 2017), and the total capital ratio to 10.5% (8.625% in 2016 and 9.25% in 2017). First Priority’s ability to pay cash dividends is dependent on receiving cash in the form of dividends from the Bank. However, certain restrictions exist regarding the ability of the Bank to transfer funds to First Priority in the form of cash dividends. All dividends are currently subject to prior approval of the Pennsylvania Department of Banking and Securities and the FDIC and are payable only from the undivided profits of the Bank, with the exception of an exemption enacted by the Pennsylvania Department of Banking and Securities which allows the Bank to pay dividends related to preferred stock originally issued under the U.S. Department of the Treasury’s Troubled Asset Relief Program—Capital Purchase Program. Additionally, First Priority has met the requirement of obtaining prior approval from the Federal Reserve Bank on any payment of dividends including dividends on the aforementioned preferred stock, when net income for the past four quarters is not sufficient to fund the dividend payments over that same period or when such payment would negatively impact capital adequacy of the Company.

Fair Value Measurements and Fai

Fair Value Measurements and Fair Values of Financial Instruments	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements and Fair Values of Financial Instruments	Note 18—Fair Value Measurements and Fair Values of Financial Instruments Management uses its best judgment in estimating the fair value of the Bank’s financial instruments; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction on the dates indicated. The estimated fair value amounts have been measured as of December 31, 2017 and 2016 and have not been re-evaluated or updated for purposes of these financial statements subsequent to those respective dates. As such, the estimated fair values of these financial instruments subsequent to the respective reporting dates may be different than the amounts reported at each year-end. The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In accordance with FASB ASC Topic 820 – Fair Value Measurements The fair value guidance provides a consistent definition of fair value, which focuses on exit price in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. If there has been a significant decrease in the volume and level of activity for the asset or liability, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under current market conditions depends on the facts and circumstances and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under current market conditions. FASB ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation methods used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under FASB ASC Topic 820 are as follows: Level 1 : Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2 : Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability. Level 3 : Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported with little or no market activity). An asset’s or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. During the years ended December 31, 2017 and 2016 there were no changes in methodologies for determining fair value measurements and there were no transfers between fair value hierarchy levels. For financial assets measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy used at December 31, 2017 and 2016 are as follows: Description Fair Value (Level 1) Quoted Prices in Active Markets for Identical Assets (Level 2) Significant Other Observable Inputs (Level 3) Significant Unobservable Inputs (Dollars in thousands) As of December 31, 2017: Investment securities available for sale: Obligations of U.S. government agencies and corporations $ 20,971 $ - $ 20,971 $ - Obligations of states and political subdivisions 4,386 - 4,386 - Federal agency mortgage-backed securities 25,289 - 25,289 - Federal agency collateralized mortgage obligations 109 - 109 - Other debt securities 1,583 - 1,583 - Money market mutual fund 35 35 - - Total assets measured at fair value on a recurring basis $ 52,373 $ 35 $ 52,338 $ - Description Fair Value (Level 1) Quoted Prices in Active Markets for Identical Assets (Level 2) Significant Other Observable Inputs (Level 3) Significant Unobservable Inputs (Dollars in thousands) As of December 31, 2016: Investment securities available for sale: Obligations of U.S. government agencies and corporations $ 45,987 $ - $ 45,987 $ - Obligations of states and political subdivisions 6,139 - 6,139 - Federal agency mortgage-backed securities 13,720 - 13,720 - Federal agency collateralized mortgage obligations 189 - 189 - Other debt securities 1,530 - 1,530 - Money market mutual fund 2,995 2,995 - - Total assets measured at fair value on a recurring basis $ 70,560 $ 2,995 $ 67,565 $ - For financial assets measured at fair value on a nonrecurring basis, the fair value measurements by level within the fair value hierarchy used at December 31, 2017 and 2016 are as follows: Description Fair Value (Level 1) Quoted Prices in Active Markets for Identical Assets (Level 2) Significant Other Observable Inputs (Level 3) Significant Unobservable Inputs (Dollars in thousands) As of December 31, 2017: Impaired loans $ 1,119 $ - $ - $ 1,119 Other real estate owned 69 - - 69 Total assets measured at fair value on a nonrecurring basis $ 1,188 $ - $ - $ 1,188 As of December 31, 2016: Impaired loans $ 1,257 $ - $ - $ 1,257 Other real estate owned 679 - - 679 Total assets measured at fair value on a nonrecurring basis $ 1,936 $ - $ - $ 1,936 Management generally uses a discounted appraisal technique in valuing impaired assets, resulting in the discounting of the collateral values underlying each impaired asset. A discounted tax assessment rate has been applied for smaller assets to determine the discounted collateral value. All impaired loans are classified as Level 3 in the fair value hierarchy. Collateral may be real estate and / or business assets. Impaired loans are reviewed and evaluated on at least a quarterly basis for additional impairment. Quantitative information about Level 3 fair value measurements at December 31, 2017 is included in the table below: Fair Value Valuation Techniques Unobservable Inputs (2) Estimated Ratings (Weighted Average) (3) (Dollars in thousands) Impaired loans $ 1,119 Appraisal of real estate collateral (1) Appraisal adjustments 0%-75% (12.19%) Liquidation expenses 0%-10% (8.47%) Other real estate owned $ 69 Appraisal of collateral(1) Appraisal adjustments 0% (0.00%) Liquidation expenses 8% (8.00%) Quantitative information about Level 3 fair value measurements at December 31, 2016 is included in the table below: Fair Value Valuation Techniques Unobservable Inputs (2) Estimated Ratings (Weighted Average) (3) (Dollars in thousands) Impaired loans $ 1,257 Appraisal of real estate collateral (1) Appraisal adjustments 0%-25% (4.87%) Valuation of business assets used as collateral(4) Valuation adjustments 0%-80% (75.32%) Liquidation expenses 0%-10% (8.01%) Other real estate owned $ 679 Appraisal of collateral(1) Appraisal adjustments 0% (0.00%) Liquidation expenses 5%-7% (6.94%) (1) Fair Value is generally determined through independent appraisals of the underlying collateral, which include Level 3 inputs that are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. (3) The range and weighted average of qualitative factors such as economic conditions and estimated liquidation expenses are presented as a percent of the appraised value. (4) Fair value is generally determined based on specific customer’s business assets, such as accounts receivable, which have been used as collateral for loans. Valuation of real estate collateral may be discounted based on the age of the existing appraisal. Discounts are typically not taken for recent appraisals. Valuations related to business assets used as collateral are typically discounted more heavily due to the inherent level of uncertainty in determining the fair value of these types of assets. Liquidation costs relating to these assets are charged to expense. Other real estate owned measured at fair value on a nonrecurring basis consists of properties acquired as a result of accepting a deed in lieu of foreclosure, foreclosure or through other means related to collateral on Bank loans which resulted in a gain or loss recognized during the period. Costs relating to the development or improvement of assets are capitalized and costs relating to holding the property are charged to expense. At December 31, 2017 and 2016, the fair value of other real estate owned consists of balances of $69 thousand and $1.2 million, respectively, net of valuation allowances of $38 thousand, and $520 thousand, respectively. Fair value is generally determined based upon independent third-party appraisals of the property. Real estate properties acquired through, or in lieu of, foreclosure are to be sold and are carried at fair value less estimated cost to sell. Fair value is based upon independent market prices or appraised value of the property. These assets are included in Level 3 fair value based upon the lowest level of input that is significant to the fair value measurement. The following information should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only provided for a limited portion of the Company’s assets and liabilities. Due to a wide range of valuation techniques and the degree of subjectivity used in making the estimates, comparisons between the Company’s disclosures and those of other companies may not be meaningful. The following methods and assumptions were used to estimate the fair values of the Company’s financial instruments at December 31, 2017 and 2016: Cash and Cash Equivalents The carrying amounts reported in the balance sheet for cash and short-term instruments approximate those assets’ fair values. Securities The fair value of securities available for sale (carried at fair value) and held to maturity (carried at amortized cost) are determined by obtaining quoted market prices on nationally recognized securities exchanges (Level 1), or matrix pricing (Level 2), which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted market prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted prices. Loans Receivable The fair values of loans are estimated using discounted cash flow analyses, using market rates at the balance sheet date that reflect the credit and interest rate-risk inherent in the loans. Projected future cash flows are calculated based upon contractual maturity or call dates, projected repayments and prepayments of principal. Impaired Loans Impaired loans, which are included in loans receivable, are those that are accounted for under FASB ASC Topic 310, “Receivables” , Restricted Investment in Bank Stock The carrying amount of restricted investment in bank stock approximates fair value, and considers the limited marketability of such securities. Accrued Interest Receivable and Payable The carrying amount of accrued interest receivable and accrued interest payable approximates fair value. Deposit Liabilities The fair values disclosed for demand deposits (interest and noninterest checking), money market and savings accounts are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered in the market to the maturities of the time deposits. Short-Term Borrowings The carrying amounts of short-term borrowings approximate their fair values. Long-Term Debt Fair values of FHLB advances are estimated using discounted cash flow analysis, based on quoted prices for new FHLB advances with similar credit risk characteristics, terms and remaining maturity. These prices obtained from this active market represent a market value that is deemed to represent the transfer price if the liability were assumed by a third party. Subordinated Debt The fair values of subordinated debt has been estimated using discounted cash flow calculation taking into account contractual maturities, call features, and market interest rates for instruments with similar financial and credit characteristics. These instruments are classified within Level 2 of the fair value hierarchy. Off-Balance Sheet Financial Instruments Fair values for the Company’s off-balance sheet financial instruments (lending commitments and letters of credit) are based on fees currently charged in the market to enter into similar agreements, taking into account, the remaining terms of the agreements and the counterparties’ credit standing. At December 31, 2017 and 2016, the estimated fair values of the Company’s financial instruments were as follows: December 31, 2017 Carrying Amount Fair Value Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Cash and cash equivalents $ 8,257 $ 8,257 $ 8,257 $ - $ - Securities available for sale 52,373 52,373 35 52,338 - Securities held to maturity 18,665 19,665 - 19,665 - Loans receivable, net 515,522 519,721 - - 519,721 Restricted stock 1,416 1,416 - 1,416 - Accrued interest receivable 2,007 2,007 - 2,007 - Liabilities: Deposits 523,150 521,922 - 521,922 - Federal Home Loan Bank of Pittsburgh advances 24,625 24,546 - 24,546 - Subordinated debt 9,231 9,539 - 9,539 - Accrued interest payable 844 844 - 844 - Off-balance sheet credit related instruments: Commitments to extend credit - - - - - December 31, 2016 Carrying Amount Fair Value Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Cash and cash equivalents $ 4,761 $ 4,761 $ 4,761 $ - $ - Securities available for sale 70,560 70,560 2,995 67,565 - Securities held to maturity 19,043 19,584 - 19,584 - Loans receivable, net 484,913 490,890 - - 490,890 Restricted stock 3,257 3,257 - 3,257 - Accrued interest receivable 1,817 1,817 - 1,817 - Liabilities: Deposits 467,688 467,616 - 467,616 - Federal Home Loan Bank of Pittsburgh advances 68,164 68,157 - 68,157 - Subordinated debt 9,207 9,273 - 9,273 - Accrued interest payable 510 510 - 510 - Off-balance sheet credit related instruments:

Parent Company Only Financial I

Parent Company Only Financial Information	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Parent Company Only Financial Information	Note 19—Parent Company Only Financial Information Condensed financial statements of First Priority Financial Corp. follow: CONDENSED BALANCE SHEETS December 31, 2017 2016 (Dollars in thousands) Assets Cash and cash equivalents $ 27 $ 243 Investment in subsidiary 50,118 47,454 Deferred taxes 238 349 Receivable due from bank subsidiary 119 - Other assets 18 32 Total assets $ 50,520 $ 48,078 Liabilities and shareholders' equity Other liabilities $ 24 $ 32 Shareholders' equity 50,496 48,046 Total liabilities and shareholders' equity $ 50,520 $ 48,078 CONDENSED INCOME STATEMENTS For the year ended December 31, 2017 2016 (Dollars in thousands) Dividend income from subsidiary, net of dividends paid by Bank $ 306 $ 407 Interest from subsidiary 1 2 Total income 307 409 Non-interest expenses 103 161 Income before taxes and equity in undistributed net income of subsidiary 204 248 Federal income tax expense (benefit) 112 (54 ) Income before equity in undistributed net income of subsidiary 92 302 Equity in undistributed net income of subsidiary 2,366 1,998 Net income $ 2,458 $ 2,300 STATEMENTS OF COMPREHENSIVE INCOME For the year ended December 31, 2017 2016 (Dollars in thousands) Net income $ 2,458 $ 2,300 Other comprehensive (loss) income: Securities available for sale: Change in unrealized gain on securities available for sale 484 405 Reclassification adjustment for realized gains included in net income (416 ) (795 ) Tax effect (23 ) 133 Net (losses) gains arising during the period 45 (257 ) Net unrealized holding losses on securities transferred between available for sale and held to maturity: Amortization of net unrealized holding losses to income during the period……………………………………..…….…………………………………… (14 ) (31 ) Tax effect 5 10 Net unrealized holding losses on securities transferred during the period (9 ) (21 ) Total other comprehensive (loss) income 36 (278 ) Total comprehensive income $ 2,494 $ 2,022 CONDENSED STATEMENTS OF CASH FLOWS For the year ended December 31, 2017 2016 (Dollars in thousands) Operating activities: Net income $ 2,458 $ 2,300 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiary, net of dividends from Bank (2,628 ) (2,326 ) Stock based compensation distribution from Bank 262 328 Deferred income tax expense (benefit) 111 (54 ) Net increase in other assets (105 ) (4 ) Net (decrease) increase in other liabilities (8 ) 3 Net cash provided by operating activities 90 247 Financing activities: Redemptions of preferred stock - (6,000 ) Proceeds from the exercise of common stock options - 12 Cash dividends paid on preferred stock (306 ) (427 ) Net cash used in financing activities (306 ) (6,415 ) Net decrease in cash (216 ) (6,168 ) Cash and cash equivalents at beginning of the period 243 6,411 Cash and cash equivalents at end of period $ 27 $ 243

Subsequent Event

Subsequent Event	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Event	Note 20—Subsequent Event Merger with Mid Penn Bancorp, Inc. As previously announced on January 16, 2018, First Priority entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Mid Penn Bancorp, Inc. (“Mid Penn”) pursuant to which First Priority will merge with and into Mid Penn (the “Merger”), with Mid Penn being the surviving corporation in the Merger. On a pro forma basis, at December 31, 2017, the combined company would have approximately $2.2 billion in total assets, $1.6 billion in loans, $1.8 billion in deposits and $170 million in equity capital. Under the terms of the Merger Agreement, shareholders of First Priority will receive 0.3481 shares of Mid Penn common stock for each share of First Priority common stock they own. Subject to customary closing conditions including regulatory and shareholder approvals, it is expected that the Merger will be completed in the third quarter of 2018. The combination will establish a community bank with 37 retail locations serving 12 counties in Pennsylvania and will have a geographical presence in southeastern Pennsylvania in Berks, Bucks Chester and Montgomery counties, central Pennsylvania in Cumberland, Dauphin, Lancaster, Luzerne, Northumberland and Schuylkill counties and western Pennsylvania in Fayette and Westmoreland counties resulting from Mid Penn’s acquisition of Scottdale Bank & Trust on January 8, 2018.

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Organization and Nature of Operations	Organization and Nature of Operations First Priority Financial Corp. First Priority Financial Corp. (“First Priority”, the “Company”) is a bank holding company incorporated under the laws of the Commonwealth of Pennsylvania on February 13, 2007. On May 11, 2007, as a result of a reorganization and merger, First Priority Bank (the “Bank”) became a wholly-owned subsidiary of First Priority. First Priority, primarily through the Bank, serves residents and businesses in the Delaware Valley with branches in Berks, Bucks, Chester and Montgomery counties in Pennsylvania. The Bank, headquartered in Malvern, PA, has seven retail branch office locations and one loan production office and is a locally managed community bank providing commercial banking products, primarily loans and deposits. First Priority provides banking services through the Bank and does not engage in any activities other than banking and related activities. First Priority Bank The Bank is a state-chartered commercial banking institution which was incorporated under the laws of the Commonwealth of Pennsylvania on May 25, 2005. The Bank’s deposits are insured by the FDIC up to the maximum amount permitted for all banks. The Bank engages in a full service commercial and consumer banking business with strong private banking and individual wealth management services. The Bank offers a variety of consumer, private banking and commercial loans, mortgage products and commercial real estate financing. The Company’s operations are significantly affected by prevailing economic conditions, competition, and the monetary, fiscal, and regulatory policies of governmental agencies. Lending activities are influenced by a number of factors, including the general credit needs of individuals and small and medium-sized businesses in the Company’s market area, competition, the current regulatory environment, the level of interest rates, and the availability of funds. Deposit flows and costs of funds are influenced by prevailing market rates of interest, competition, account maturities, and the level of personal income and savings in the market area. The Bank also offers certain financial planning and investment management services. These investment services are provided by First Priority Financial Services, a Division of First Priority Bank, through third party providers. In addition, the Bank has entered into solicitation agreements with several investment advisors to provide portfolio management services to customers of the Bank. The Bank currently seeks deposits and commercial and private banking relationships through its banking offices. The Bank provides deposit products that include checking, money market and savings accounts, and certificates of deposit as well as other deposit services, including cash management, electronic banking and mobile products as well as online account opening capabilities. The Bank obtains funding in the local community by providing excellent service and competitive rates to its customers and utilizes various advertising to attract current and potential deposit customers. The Bank also uses brokered certificates of deposit as a cost effective funding alternative.
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements consist of the Company and the Company’s wholly owned consolidated subsidiary, the Bank. All significant intercompany accounts and transactions have been eliminated in consolidation. These statements are prepared in accordance with accounting principles generally accepted in the United States (“GAAP”).
Subsequent Events	Subsequent Events Management has evaluated events and transactions occurring subsequent to December 31, 2017 for items that should potentially be recognized or disclosed in these Consolidated Financial Statements. The evaluation was conducted through the date these financial statements were issued.
Use of Estimates	Use of Estimates The preparation of 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the valuation of acquired loans, the determination of the allowance for loan losses, stock-based compensation, impairment of goodwill, impairment of investments, the valuation of deferred tax assets and the valuation of other real estate owned.
Significant Group Concentrations of Credit Risk	Significant Group Concentrations of Credit Risk Most of the Company’s activities are with customers located within the western and northwestern suburbs surrounding Philadelphia. Note 4 of the Notes to Consolidated Financial Statements discusses the types of securities in which the Company currently invests. Note 5 discusses the types of lending in which the Company engages. Although the Company intends to have a diversified loan portfolio, its debtors’ ability to honor their contracts will be influenced by the region’s economy. The Company’s investment portfolio consists principally of obligations of the United States and its agencies and obligations of states and political subdivisions. In the opinion of management, there is no concentration of credit risk in its investment portfolio. The Company places deposits in correspondent accounts and, on occasion, sells Federal funds to qualified financial institutions. Management believes credit risk associated with correspondent accounts and with Federal funds sold is not significant. Therefore, management believes that these particular practices do not subject the Company to unusual credit risk.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks, Federal funds sold and short-term money market securities. Generally, Federal funds are purchased or sold for one day periods. Short-term investments are generally purchased with a maturity date of less than three months. The Company is required to maintain cash reserves that are considered restrictions on cash and cash equivalents which consist of required reserves with the Federal Reserve Bank, related to our deposit liabilities. At December 31, 2017 and 2016, these reserve balances were $1.7 million and $1.9 million, respectively.
Securities	Securities Management determines the appropriate classification of debt securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Securities classified as available for sale are those securities that the Company intends to hold for an indefinite period of time, but not necessarily to maturity. Available for sale securities are carried at fair value. Unrealized gains and losses on available for sale investment securities are reported as increases or decreases in other comprehensive income as a component of shareholders’ equity. Realized gains or losses, determined on the basis of the cost of the specific securities sold, are included in earnings. Premiums and discounts are recognized in interest income using the interest method over the term of each security. Any decision to sell a security classified as available for sale would be based on various factors, including significant movements, or anticipated movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, regulatory capital considerations and other similar factors. Securities classified as held to maturity are those debt securities the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs or changes in general economic conditions. These securities are carried at cost adjusted for the amortization of premium and accretion of discount, using the interest method over the terms of the securities. Transfer of securities into held to maturity from available for sale are made at fair value at the date of transfer. The unrealized gain/loss at date of transfer is retained in other comprehensive income, and in the current value of the held to maturity securities. Such amounts are amortized over the remaining life of the security. In estimating other-than-temporary impairment losses, management considers (1) the length of time and the extent to which the fair value has been less than cost; (2) the financial condition and near-term prospects of the issuer; and (3) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. When a determination is made that an other-than-temporary impairment exists but the Company does not intend to sell the debt security and it is more likely than not that it will not be required to sell the debt security prior to its anticipated recovery, the other-than-temporary impairment is separated into (a) the amount of the total other-than-temporary impairment related to a decrease in cash flows expected to be collected from the debt security (the credit loss) and (b) the amount of the total other-than-temporary impairment related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to all other factors is recognized in other comprehensive income.
Restricted Investments in Bank Stocks	Restricted Investments in Bank Stocks Restricted investments in bank stocks, which represents the required investment in the common stock of correspondent banks, are carried at cost and consist of stock of the Federal Home Loan Bank of Pittsburgh (“FHLB”) and Atlantic Community Bancshares, Inc. Federal law requires a member institution of the FHLB to hold FHLB stock according to a predetermined formula. Management’s determination of whether these investments are impaired is based on their assessment of the ultimate recoverability of their cost rather than by recognizing temporary declines in value.
Loans Receivable	Loans Receivable Loans receivable that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at their outstanding unpaid principal balances, net of an allowance for loan losses and any deferred fees or costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the yield (interest income) by the interest method based on the contractual terms of the related loans, or if the commitment expires unexercised, recognized in income upon expiration. The loans receivable portfolio is segmented into commercial, residential mortgage loans and consumer loans. Commercial loans consist of the following classes: commercial and industrial, commercial construction and commercial mortgage loans. Consumer loans consist of home equity lines of credit and all other consumer loans. The accrual of interest is discontinued when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about further collectability of principal or interest, even though the loan is currently performing. A loan may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed and unpaid interest accrued in prior years is charged against the allowance for loan losses. Interest received on nonaccrual loans is generally either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time, and the ultimate collectability of the total contractual principal and interest is no longer in doubt. The past due status of all classes of loans receivable is determined based on contractual due dates for loan payments.
Acquired Loans	Acquired Loans Loans acquired as part of a full bank acquisition are initially recorded at their acquisition date fair values. The carryover of 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 acquired loans are based on a discounted cash flow methodology that involves assumptions and judgments as to credit risk, prepayment risk, liquidity risk, default rates, loss severity, payment speeds, collateral values and discount rate. Acquired loans that have evidence of deterioration in credit quality since origination and for which it is probable, at acquisition, that the Company will be unable to collect all contractually required payments are accounted for as impaired loans under ASC 310-30. 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 loans using the interest method. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the non-accretable discount. The non-accretable discount represents estimated future credit losses expected to be incurred over the life of the loan. Subsequent decreases to the expected cash flows require the Company to evaluate the need for an allowance for loan losses on these loans. Subsequent improvements in expected cash flows result in the reversal of a corresponding amount of the non-accretable discount which the Company then reclassifies as an accretable discount that is recognized into interest income over the remaining life of the loans using the interest method. As of December 31, 2017, there were three remaining acquired purchased credit impaired loans with a net recorded balance of $55 thousand, after a non-accretable credit discount of $352 thousand compared to a net recorded balance of $215 thousand, after a non-accretable credit discount of $362 thousand as of December 31, 2016. Acquired loans that met the criteria for non-accrual of interest prior to acquisition may be considered performing upon acquisition, or in the future, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be non-accrual or non-performing and may accrue interest on these loans, including the impact of any accretable discount. For acquired loans that are not deemed impaired at acquisition, credit discounts representing the principal losses expected over the life of the loan are a component of the initial fair value and amortized over the life of the asset using the interest method. Subsequent to the acquisition date, the methods utilized to estimate the required allowance for loan losses for these loans is similar to originated loans, however, the Company records a provision for loan losses only when the required allowance exceeds any remaining pooled discounts for loans evaluated collectively for impairment. The Company also purchased portfolios of performing residential mortgage loans in 2014 through 2017, all of which were underwritten using similar underwriting standards as it uses for its organic portfolio. In August 2016, the Company purchased performing commercial loans from within the Bank’s market area. Net acquisition premiums, or discounts, from the purchased loans will be recognized into interest income over the remaining life of the loans using the interest method. There are currently no non-performing loans within these portfolios.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for credit losses consists of the allowance for loan losses and the reserve for unfunded lending commitments. The allowance for loan losses represents management’s estimate of losses inherent in the loan portfolio as of the balance sheet date and is recorded as a reduction to loans. The reserve for unfunded lending commitments, totaling $35 thousand as of both December 31, 2017 and 2016, represents management’s estimate of potential losses inherent in its unfunded loan commitments and is recorded in other liabilities on the consolidated balance sheets. The allowance for loan losses is increased by the provision for loan losses, and decreased by charge-offs, net of recoveries. Loans deemed to be uncollectible are charged against the allowance for loan losses, and subsequent recoveries, if any, are credited to the allowance. All, or part, of the principal balance of loans receivable are charged off to the allowance as soon as it is determined that the repayment of all, or part, of the principal balance is highly unlikely. Because all identified losses are immediately charged off, no portion of the allowance for loan losses is restricted to any individual loan or groups of loans, and the entire allowance is available to absorb any and all loan losses. The allowance for loan losses is maintained at a level considered adequate to provide for losses that can be reasonably anticipated. Management performs a quarterly evaluation of the adequacy of the allowance. The allowance is based on the Company’s past loan loss experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral, composition of the loan portfolio, current economic conditions and other relevant factors. This evaluation is inherently subjective as it requires material estimates that may be susceptible to significant revision as more information becomes available. The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as impaired. For loans that are classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component covers pools of loans by loan class including commercial loans not considered impaired, as well as smaller balance homogeneous loans, such as residential real estate, home equity and other consumer loans. These pools of loans are evaluated for loss exposure based upon historical loss rates for each of these categories of loans, adjusted for qualitative factors. These qualitative risk factors include: 1. Lending policies and procedures, including underwriting standards and collection, charge-off, and recovery practices. 2. National, regional, and local economic and business conditions as well as the condition of various market segments, including the value of underlying collateral for collateral dependent loans. 3. Nature and volume of the portfolio and terms of loans. 4. Management team with experience, depth, and knowledge in banking and in many areas of lending. Each contributes to the sound credit culture and control within the Company. 5. Volume and severity of past due, classified and nonaccrual loans as well as other loan modifications. 6. The Company engages a third party to perform an independent review of the loan portfolio as a measure for quality and consistency in credit evaluation and credit decisions. 7. Existence and effect of any concentrations of credit and changes in the level of such concentrations. 8. Effect of external factors, such as competition and legal and regulatory requirements. Each factor is assigned a value to reflect improving, stable or declining conditions based on management’s best judgment using relevant information available at the time of the evaluation. Adjustments to the factors are supported through documentation of changes in conditions in a narrative accompanying the allowance for loan loss calculation. A majority of the Company’s loans are to business owners of many types. The Company makes commercial loans for real estate development and other business purposes required by our customers. The Company’s credit policies determine advance rates against the different forms of collateral that can be pledged against commercial loans. Typically, the majority of loans will be limited to a percentage of their underlying collateral values such as real estate values, equipment, eligible accounts receivable and inventory. Individual loan advance rates may be higher or lower depending upon the financial strength of the borrower and/or term of the loan. The assets financed through commercial and industrial loans are used within the business for its ongoing operation. Repayment of these kinds of loans generally comes from the cash flow of the business or the ongoing conversions of assets. Commercial real estate loans include long-term loans financing commercial properties. Repayment of this kind of loan is dependent upon either the ongoing cash flow of the borrowing entity or the resale of or lease of the subject property. Commercial real estate loans typically require a loan to value ratio of not greater than 80% and vary in terms. Construction loans consists of acquisition, construction and development loans serving a diverse customer base in its primary market areas. The composition of this portfolio can change based on local economic conditions such as supply and demand, interest rates and real estate values. The Company typically lends to builders and developers with established relationships, successful operating histories and sound financial resources. Construction loans include both commercial and residential related loans. The commercial portion consists of loans for the purpose of acquiring, developing and constructing a commercial-use structure and for the acquisition, development and/or construction of residential properties, such as single-family homes or smaller multi-family buildings, by residential developers and builders. This may also include the acquisition and development of land on a selective basis. The residential portion consists of loans for the acquisition of and/or construction on land where a residential dwelling is to be built and occupied by the home-owner. Residential mortgages and home equity loans are secured by the borrower’s residential real estate in either a first or second lien position. Residential mortgages and home equity loans have varying loan rates depending on the loan terms. Residential mortgages have amortizations up to 30 years and home equity loans have amortizations up to 15 years. Residential mortgages and home equity loans typically require a loan to value ratio of not greater than 80%. Other consumer loans include installment loans, car loans, and overdraft lines of credit. The majority of these loans are secured. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case by case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis by either 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. An allowance for loan losses is established for an impaired loan if its carrying value exceeds its estimated fair value. The estimated fair values of substantially all of the Company’s impaired loans are measured based on the estimated fair value of the loan’s collateral. For commercial loans secured by real estate, estimated fair values are determined primarily through third-party appraisals. When a real estate secured loan becomes impaired, a decision is made regarding whether an updated certified appraisal of the real estate is necessary. This decision is based on various considerations, including the age of the most recent appraisal, the loan-to-value ratio based on the original appraisal and the condition of the property. Appraised values may be discounted to arrive at the estimated selling price of the collateral, which is considered to be the estimated fair value. The discounts also include estimated costs to sell the property. For commercial and industrial loans secured by non-real estate collateral, such as accounts receivable, inventory and equipment, estimated fair values are determined based on the borrower’s financial statements, inventory reports, accounts receivable aging or equipment appraisals or invoices. Indications of value from these sources are generally discounted based on the age of the financial information or the quality of the assets. The allowance calculation methodology includes further segregation of loan classes into risk rating categories. The borrower’s overall financial condition, repayment sources, guarantors and value of collateral, if appropriate, are evaluated annually for commercial loans or when credit deficiencies arise, such as delinquent loan payments, for commercial and consumer loans. Credit quality risk ratings include regulatory classifications of special mention, substandard, doubtful and loss. Loans criticized special mention have potential weaknesses that deserve management’s close attention. If uncorrected, the potential weaknesses may result in deterioration of the repayment prospects. Loans classified substandard have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They include loans that are inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans classified doubtful have all the weaknesses inherent in loans classified substandard with the added characteristic that collection or liquidation in full, on the basis of current conditions and facts, is highly improbable. Loans classified as a loss are considered uncollectible and are charged to the allowance for loan losses. Loans not classified are rated pass. In addition, Federal regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and may require the Company to recognize additions to the allowance based on their judgments about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio, management believes the current level of the allowance for loan losses is adequate.
Troubled Debt Restructurings	Troubled Debt Restructurings Loans whose terms are modified are classified as troubled debt restructurings (“TDR”) if the Company grants such borrowers concessions and it is deemed that those borrowers are experiencing financial difficulty. Concessions granted under a TDR may be modified by means of extending the maturity date of the loan, reducing the interest rate on the loan to a rate which is below market, a combination of rate adjustments and maturity extensions, or by other means including covenant modifications, forbearances or other concessions. Generally, interest is not accrued on loans that were non-accrual prior to the TDR until they have performed in accordance with the modified terms for a period of at least six months; however, non-accrual TDR’s may be restored to accrual status if principal and interest payments, under the modified terms, are current for six consecutive months after modification. Loans classified as TDR’s are designated as impaired. TDR’s which are performing based on modified terms and conditions, which reflect the current market, may be reclassified from TDR status. Management evaluates the allowance for loan losses with respect to TDR’s under the same policy and guidelines as all other performing loans are evaluated with respect to the allowance for loan losses.
Transfers of Financial Assets	Transfers of Financial Assets Transfers of financial assets, including loan and loan participation sales, are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company; (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets; and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
Other Real Estate Owned	Other Real Estate Owned Assets acquired through, or in lieu of, loan foreclosure are held for sale and generally are initially recorded at fair value less cost to sell at the date of foreclosure, establishing a new cost basis. Any write-down, at or prior to the dates the real estate is considered foreclosed, is charged to the allowance for loan losses. Subsequent to foreclosure, valuations are periodically performed by management and the assets are generally carried at the lower of carrying amount or fair value less cost to sell. Revenue and expenses from operations and changes in the valuation allowance (write-downs) are included in other non-interest expenses. Any gain or loss upon the sale of real estate owned is reflected in operations as incurred.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Premises and equipment in an acquisition or merger are recorded on acquisition date at fair value. Depreciation is computed on the straight-line method over the estimated useful lives of the related assets, ranging from 1 to 20 years beginning when the assets are placed in service. Buildings are depreciated from 14 to 20 years. Leasehold improvements are amortized over the term of the lease or estimated useful lives, whichever is shorter, ranging from 1 to 20 years. Furniture, fixtures and equipment are depreciated from 2 to 10 years, automobiles are depreciated over 5 years and computer equipment and data processing software are depreciated from 1 to 10 years. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any gain or loss is reflected in income for the period. The cost of maintenance and repairs is charged to expense as incurred.
Bank Owned Life Insurance	Bank Owned Life Insurance The Bank invests in bank owned life insurance (“BOLI”) policies that provide earnings to help cover the cost of employee benefit plans. The Bank is the owner of the life insurance policies it purchased directly on the lives of certain officers of the Bank. These policies were issued as split dollar life insurance policies which provide for a portion of the death benefit to be paid to the beneficiaries of the officer while employed by the Bank or through change in control provisions. The policies are carried on the Company’s consolidated balance sheet at their cash surrender value and are subject to regulatory capital requirements. The determination of the cash surrender value includes a full evaluation of the contractual terms of each policy. Additionally, the Company periodically reviews the creditworthiness of the insurance company that has underwritten the policies. Earnings accruing to the Company are derived from the general account investments of the insurance companies. Increases in the net cash surrender value of BOLI policies and insurance proceeds received are not taxable and are recorded in non-interest income in the consolidated statement of income.
Employee Benefit Plans	Employee Benefit Plans The Company’s 401(k) plan allows eligible participants to set aside a certain percentage of their salaries before taxes. The Company may elect to match employee contributions up to a specified percentage of their respective salaries in an amount determined by the Board of Directors. The Company’s total matching contributions related to these plans resulted in expenses of $155 thousand and $149 thousand for the years ended December 31, 2017 and 2016, respectively.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill represents the excess of the cost of an acquired entity over the fair value of the identifiable net assets acquired in accordance with the acquisition method of accounting. Goodwill is not amortized but is reviewed for potential impairment at the reporting unit level on an annual basis, or more often if events or circumstances indicate that there may be impairment. ASC Topic 350-20 requires an at least annual review of the fair value of a reporting unit that has goodwill in order to determine if it is more likely than not (that is, a likelihood of more than 50%) that the fair value of a reporting unit is less than its carrying amount, including goodwill. The Company elects to perform this review on July 1st of each year. A qualitative factor test can be performed to determine whether it is necessary to perform a quantitative goodwill impairment test. If this qualitative test determines it is not likely (less than 50% probability) the fair value of the reporting unit is less than book value, then the Company is not required to perform a quantitative test and goodwill can be considered not impaired. The Company reviewed the requirements of the qualitative assessments listed in ASC 350-20-35-3C, and resultantly identified nine qualitative assessments that are relevant to the general banking industry and specifically to First Priority. These qualitative assessments were intended to isolate change factors which would contribute to the increased risk of impairment of goodwill. The qualitative factors were then used to compare base year levels with current levels to identify potential change factors which could contribute to the increased risk of impairment of goodwill. Based on the results of this analysis, it is more likely than not that the fair value of reporting unit as of the date of this analysis is higher than its book value and, therefore, goodwill is considered not impaired and no further testing is required pursuant to ASC Topic 350-20. Any impairment loss related to goodwill and other intangible assets is reflected as other non-interest expense in the statement of operations in the period in which the impairment is determined. No assurance can be given that future impairment tests will not result in a charge to earnings. Core deposit and other intangible assets acquired in acquisitions are identified, recognized and amortized based upon the estimated economic benefits received using a 10 year sum of the years amortization method.
Segment Information	Segment Information First Priority has one reportable segment, Community Banking. All of the Company’s activities are interrelated, and each activity is dependent and assessed based on how each of the activities of the Company supports the others. Lending activities are dependent upon the ability of the Company to fund itself with deposits and borrowings while managing the interest rate and credit risk. Accordingly, all significant operating decisions are based upon analysis of the Company as one segment or unit.
Advertising Costs	Advertising Costs The Company follows the policy of charging the costs of advertising to expense as incurred.
Income Taxes	Income Taxes Deferred taxes are provided on the liability method whereby deferred tax assets are recognized for deductible temporary differences and deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax basis. Deferred tax assets and liabilities are adjusted for the effects of changes in tax laws and rates on the date of enactment. The Company files a consolidated federal income tax return with the Bank. The Company evaluates the carrying amount of its deferred tax assets on a quarterly basis or more frequently, if necessary, in accordance with the guidance provided in Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 740 (ASC 740), in particular, applying the criteria set forth therein to determine whether it is more likely than not (i.e. a likelihood of more than 50%) that some portion, or all, of the deferred tax asset will not be realized within its life cycle, based on the weight of available evidence. If management makes a determination based on the available evidence that it is more likely than not that some portion or all of the deferred tax assets will not be realized in future periods a valuation allowance is calculated and recorded. These determinations are inherently subjective and dependent upon estimates and judgments concerning management’s evaluation of both positive and negative evidence. Judgment is required when considering the relative impact of such evidence. The weight given to the potential effect of positive and negative evidence must be commensurate with the extent to which it can be objectively verified. When determining the potential for a valuation allowance, the Company assessed the possible sources of taxable income available under tax law to realize a tax benefit for deductible temporary differences and carryforwards as defined in paragraph 740-10-30-18. The Company also considers tax planning strategies which could accelerate taxable income and allow the Company to take advantage of future deductible differences. The strategy must be prudent and feasible; however, the Company does not need to have specific plans to implement the strategy, but could be an opportunity that the Company could implement in order to take advantage of net operating loss carryforwards. The Company has adopted guidance on accounting for uncertainty in income taxes as presented in FASB ASC 740-10. A tax position is recognized as a benefit at the largest amount that is more-likely-than not to be sustained in a tax examination based solely on its merits. An uncertain tax position will not be recognized if it has a less than 50% likelihood of being sustained. Under the threshold guidelines, the Company believes no significant uncertain tax positions exist, either individually or in the aggregate, that would result in recognition of a liability for unrecognized tax benefits as of December 31, 2017 and December 31, 2016.
Earnings Per Common Share	Earnings Per Common Share Basic earnings per common share exclude dilution and are computed by dividing income available to common shareholders by the weighted average common shares and participating securities (restricted stock) outstanding during the period. Diluted earnings per common share take into account the potential dilution that could occur if securities or other contracts to issue common stock were exercised and converted into common stock. Proceeds assumed to have been received on such exercise or conversion, are assumed to be used to purchase shares of the Company’s common stock at the average market price during the period, as required by the “treasury stock method” of accounting. The effects of securities or other contracts to issue common stock are excluded from the computation of diluted earnings per share in periods in which the effect would be antidilutive.
Stock Options and Restricted Stock Grants	Stock Options and Restricted Stock Grants Compensation costs related to share-based payment transactions are recognized in the financial statements over the period that an employee provides service in exchange for the award. For the years ended December 31, 2017 and 2016, compensation expense related to outstanding stock options and restricted stock grants totaled $262 thousand and $328 thousand, respectively, which is included in salaries and employee benefits in the accompanying consolidated statements of operations. There was no tax benefit recognized related to this stock-based compensation.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Accounting principles generally accepted in the United States of America require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities are reported as a separate component of the shareholders’ equity section of the balance sheet, such items, along with net income, are components of total comprehensive income. Total reclassifications from accumulated other comprehensive income (loss) for the periods presented are as follows: Details about Accumulated Other Comprehensive Income (Loss) Components Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement where Net Income is Presented December 31, 2017 2016 (Dollars in thousands) Sale of investment securities available for sale $ (416 ) $ (795 ) Gains on sale of investment securities Amortization of unrealized holding gains (losses) on securities transferred from available for sale to held to maturity (14 ) (31 ) Interest and dividend income on taxable securities Tax effect 146 281 Income tax expense Total reclassification $ (284 ) $ (545 ) Accumulated other comprehensive income (loss) at December 31, 2017 and 2016 consisted of the following: December 31, 2017 2016 (Dollars in thousands) Net unrealized gain (loss) on available for sale securities $ (4 ) $ (50 ) Net unrealized holding gains on securities transferred from available for sale to held to maturity (2 ) 8 Total $ (6 ) $ (42 )
Off-Balance Sheet Financial Instruments	Off-Balance Sheet Financial Instruments In the ordinary course of business, the Company has entered into off-balance sheet financial instruments consisting of commitments to extend credit. Such financial instruments are recorded in the consolidated balance sheet when they are funded.
Recently Issued Accounting Standards	Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. First Priority’s revenue is comprised of net interest income on financial assets and liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. This accounting guidance can be implemented using either a full retrospective method or a modified retrospective approach and will be effective for interim and annual reporting periods beginning after December 15, 2017 (effective January 1, 2018 for First Priority). Early adoption is permitted; however, First Priority will adopt this new accounting guidance in 2018, as required, and will adopt the new guidance using the modified retrospective approach. The modified retrospective approach uses a cumulative-effect adjustment to retained earnings to reflect uncompleted contracts in the initial application of the guidance. The Company has assessed its revenue streams and its contracts with customers that could potentially be affected by the new guidance; including wealth management fees, fees on deposits, gains and losses on the sale of other real estate owned and debit card interchange fees; but did not identify material changes to the timing or amount of revenue recognition. The adoption of this accounting guidance does not have a material impact on the Company’s financial condition or results of operations. The Company will also be subject to expanded disclosure requirements upon adoption for which the Company is still in the process of evaluating. In January 2016, the FASB issued Accounting Standards Update 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”). ASU 2016-01 changes current U.S. GAAP for public entities by requiring the following, among others: (1) equity securities, except those accounted for under the equity method of accounting, to be measured at fair value with changes in fair value recognized in net income; (2) the use of the exit price when measuring fair value of financial instruments for disclosure purposes; (3) an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value; and (4) separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or notes to the financial statements. ASU 2016-01 is effective for annual periods beginning after December 15, 2017, including interim periods. Early application is permitted. The Company does not hold any equity investments (excluding restricted investments in bank stocks) that do not have a readily determinable market value. The Company has determined the implementation of this standard will not have a material impact to the financial statements and disclosures. In February 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-02, Leases. In March 2016, the FASB issued ASU 2016-09, “Improvements to Employee Share-Based Payment Accounting.” This ASU simplifies several aspects of the accounting for employee share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statements of cash flows. For public business entities, this ASU is effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods therein. Accordingly, effective January of 2017, the Company adopted the pronouncement. During the year ended December 31, 2017, the Company had $10 thousand of tax benefits for stock option exercises and restricted stock vesting. In accordance with ASU 2016-09, forfeitures are recognized as they occur instead of applying an estimated forfeiture rate to each grant. For purposes of the determination of stock-based compensation expense for the year ended December 31, 2017, we recognized actual forfeitures of 4,450 shares of restricted stock awards that were granted to officers and other employees. In September 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326).” The main objective of this Update is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this Update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. For public business entities, this ASU is effective for financial statements issued for fiscal years beginning after December 15, 2019, and interim periods therein. Early adoption is permitted. The Company is reviewing our system and data collection to determine necessary changes to our current practice. In August 2016, the FASB issued ASU 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” This ASU clarifies how certain cash receipts and cash payments are presented in the statement of cash flows. This update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. For public business entities this ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. The Company is evaluating the impact of this ASU on its consolidated financial statements and disclosures. Historically the cash flows, addressed by this standard, have been infrequent and immaterial. In January 2017, the FASB issued ASU 2017-04, “Intangibles ─ Goodwill and Other (Topic 350).” This update intends to simplify the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. The amendments in this Update modify the concept of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair value to the condition that exists when the carrying amount of a reporting unit exceeds its fair value. For public business entities this ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, and interim periods therein. Early adoption is permitted. The Company does not expect the implementation of this standard to have a material impact on its consolidated statement of operations. In March 2017, the FASB issued ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities, which amends the amortization period for certain purchased callable debt securities held at a premium, shortening such period to the earliest call date. The ASU is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. For all other entities, the ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Earlier application is permitted for all entities, including adoption in an interim period. If an entity early adopts the ASU in an interim period, any adjustments must be reflected as of the beginning of the fiscal year that includes that interim period. The Company does not expect the implementation of this standard to have a material impact on its consolidated statement of operations. In February 2018, the FASB issued ASU No. 2018-02, Income Statement Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income; (“ASU 2018-02”). ASU 2018-02 states an entity may elect to reclassify the income tax effects of the Tax Cuts and Jobs Act on items within accumulated other comprehensive income to retained earnings. The amendments in this update are effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, and the Company adopted this accounting guidance effective December 31, 2017. The amount of this reclassification was immaterial.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Schedule of Total Reclassifications from Accumulated Other Comprehensive Income (Loss)	Total reclassifications from accumulated other comprehensive income (loss) for the periods presented are as follows: Details about Accumulated Other Comprehensive Income (Loss) Components Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement where Net Income is Presented December 31, 2017 2016 (Dollars in thousands) Sale of investment securities available for sale $ (416 ) $ (795 ) Gains on sale of investment securities Amortization of unrealized holding gains (losses) on securities transferred from available for sale to held to maturity (14 ) (31 ) Interest and dividend income on taxable securities Tax effect 146 281 Income tax expense Total reclassification $ (284 ) $ (545 )
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss) at December 31, 2017 and 2016 consisted of the following: December 31, 2017 2016 (Dollars in thousands) Net unrealized gain (loss) on available for sale securities $ (4 ) $ (50 ) Net unrealized holding gains on securities transferred from available for sale to held to maturity (2 ) 8 Total $ (6 ) $ (42 )

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Schedule of Calculations of Basic and Diluted Earnings per Common Share	The calculations of basic and diluted earnings per common share are presented below for the years ended December 31, 2017 and 2016: For the year ended December 31, 2017 2016 (In thousands, except per share information) Net income $ 2,458 $ 2,300 Less: preferred stock dividends (306 ) (407 ) Income to common shareholders $ 2,152 $ 1,893 Average basic common shares outstanding 6,559 6,514 Effect of dilutive stock options 226 56 Average number of common shares used to calculate diluted earnings per common share 6,785 6,570 Basic earnings per common share $ 0.33 $ 0.29 Diluted earnings per common share $ 0.32 $ 0.29
Schedule of Amount of Preferred Stock Dividends Related to Each Series of Preferred Stock	The amount of preferred stock dividends related to each series of preferred stock are presented below for the years ended December 31, 2017 and 2016: For the year ended December 31, 2017 2016 (Dollars in thousands) Preferred dividends: Preferred Series A $ - $ 77 Preferred Series B - 4 Preferred Series C 306 326 Total preferred dividends $ 306 $ 407

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost, Unrealized Gains and Losses, and Estimated Fair Value of Company's Investment Securities Available for Sale	The amortized cost, unrealized gains and losses, and the fair value of the Company’s investment securities available for sale and held to maturity are as follows for the periods presented: December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Available For Sale: Obligations of U.S. government agencies and corporations $ 20,991 $ - $ (20 ) $ 20,971 Obligations of states and political subdivisions 4,218 168 - 4,386 Federal agency mortgage-backed securities 25,524 16 (251 ) 25,289 Federal agency collateralized mortgage obligations 111 - (2 ) 109 Other debt securities 1,500 83 - 1,583 Money market mutual fund 35 - - 35 Total investment securities available for sale $ 52,379 $ 267 $ (273 ) $ 52,373 Held To Maturity: Obligations of states and political subdivisions $ 18,183 $ 953 $ (4 ) $ 19,132 Other debt securities 482 51 - 533 Total held to maturity $ 18,665 $ 1,004 $ (4 ) $ 19,665 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (Dollars in thousands) Available For Sale: Obligations of U.S. government agencies and corporations $ 45,984 $ 8 $ (5 ) $ 45,987 Obligations of states and political subdivisions 6,103 46 (10 ) 6,139 Federal agency mortgage-backed securities 13,863 33 (176 ) 13,720 Federal agency collateralized mortgage obligations 190 - (1 ) 189 Other debt securities 1,500 30 - 1,530 Money market mutual fund 2,995 - - 2,995 Total investment securities available for sale $ 70,635 $ 117 $ (192 ) $ 70,560 Held To Maturity: Obligations of states and political subdivisions $ 18,561 $ 561 $ (33 ) $ 19,089 Other debt securities 482 13 - 495 Total held to maturity $ 19,043 $ 574 $ (33 ) $ 19,584
Schedule of Aggregate Unrealized Losses and Aggregate Fair Value of Underlying Securities Available for Sale	The table below details the aggregate unrealized losses and aggregate fair value of the underlying securities whose fair values are below their amortized cost at December 31, 2017 and 2016. As of December 31, 2017 Less than 12 Months 12 Months or longer Total Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count (Dollars in thousands) Available for Sale: Obligations of U.S. government agencies and corporations $ 3,975 $ (17 ) 3 $ 1,996 $ (3 ) 2 $ 5,971 $ (20 ) 5 Federal agency mortgage-backed securities 20,099 (162 ) 12 3,416 (89 ) 4 23,515 (251 ) 16 Federal agency collateralized mortgage obligations - - - 109 (2 ) 1 109 (2 ) 1 Total Available for Sale........ $ 24,074 $ (179 ) 15 $ 5,521 $ (94 ) 7 $ 29,595 $ (273 ) 22 Held to Maturity: Obligations of states and political subdivisions $ 195 $ (1 ) 1 $ 315 $ (3 ) 1 $ 510 $ (4 ) 2 Total Held to Maturity.......... $ 195 $ (1 ) 1 $ 315 $ (3 ) 1 $ 510 $ (4 ) 2 As of December 31, 2016 Less than 12 Months 12 Months or longer Total Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count Fair Value Unrealized Losses Count (Dollars in thousands) Available for Sale: Obligations of U.S. government agencies and corporations $ 3,984 $ (5 ) 4 $ - $ - - $ 3,984 $ (5 ) 4 Obligations of states and political subdivisions - - - 872 (10 ) 1 872 (10 ) 1 Federal agency mortgage-backed securities 10,667 (175 ) 11 39 (1 ) 1 10,706 (176 ) 12 Federal agency collateralized mortgage obligations 159 (1 ) 1 - - - 159 (1 ) 1 Total Available for Sale........ $ 14,810 $ (181 ) 16 $ 911 $ (11 ) 2 $ 15,721 $ (192 ) 18 Held to Maturity: Obligations of states and political subdivisions $ 2,289 $ (33 ) 7 $ - $ - - $ 2,289 $ (33 ) 7 Total Held to Maturity.......... $ 2,289 $ (33 ) 7 $ - $ - - $ 2,289 $ (33 ) 7
Summary of Amortized Cost and Fair Value of Securities by Contractual Maturity	The amortized cost and fair value of securities as of December 31, 2017 by contractual maturity are shown below. Certain of these investment securities have call features which allow the issuer to call the security prior to its maturity date at the issuer’s discretion. December 31, 2017 Available for Sale Securities Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (Dollars in thousands) Due within one year $ 18,997 $ 18,993 $ - $ - Due after one year through five years 1,994 1,978 1,208 1,225 Due after five years through ten years 1,500 1,583 1,826 1,890 Due after ten years 4,218 4,386 15,631 16,550 26,709 26,940 18,665 19,665 Federal agency collateralized mortgage obligations 111 109 - - Federal agency mortgage-backed securities 25,524 25,289 - - Money market mutual fund 35 35 - - Total $ 52,379 $ 52,373 $ 18,665 $ 19,665

Loans Receivable and Related 33

Loans Receivable and Related Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Summary of Loans Receivable	Loans receivable consist of the following at December 31, 2017 and 2016. December 31, 2017 2016 (Dollars in thousands) Commercial: Commercial and industrial $ 85,395 $ 89,625 Commercial mortgage 235,946 223,315 Commercial construction 30,866 22,408 Total commercial 352,207 335,348 Residential mortgage loans 133,727 110,538 Consumer: Home equity lines of credit 19,295 24,669 Other consumer loans 13,780 17,514 Total consumer 33,075 42,183 Total loans 519,009 488,069 Allowance for loan losses (3,405 ) (3,330 ) Net deferred loan cost (fees) (82 ) 174 Total loans receivable, net $ 515,522 $ 484,913
Activity in Allowance for Loan Losses by Loan Class	The following tables summarize the activity in the allowance for loan losses by loan class for the years ended December 31, 2017 and 2016: For the year ended December 31, 2017 Allowance for Loan Losses (Dollars in thousands) Beginning Balance Charge-offs Recoveries Provision for loan losses Ending Balance Commercial and industrial $ 647 $ (281 ) $ 4 $ 296 $ 666 Commercial mortgage 1,051 (30 ) - 57 1,078 Commercial construction 113 - - 34 147 Residential mortgage loans 452 - - 172 624 Home equity lines of credit 188 - 2 (87 ) 103 Other consumer loans 97 (24 ) 19 (18 ) 74 Unallocated 782 - - (69 ) 713 Total $ 3,330 $ (335 ) $ 25 $ 385 $ 3,405 For the year ended December 31, 2016 Allowance for Loan Losses (Dollars in thousands) Beginning Balance Charge-offs Recoveries Provision for loan losses Ending Balance Commercial and industrial $ 631 $ (75 ) $ 21 $ 70 $ 647 Commercial mortgage 831 (72 ) 2 290 1,051 Commercial construction 56 - - 57 113 Residential mortgage loans 259 - - 193 452 Home equity lines of credit 167 - 9 12 188 Other consumer loans 84 (75 ) 15 73 97 Unallocated 767 - - 15 782 Total $ 2,795 $ (222 ) $ 47 $ 710 $ 3,330
Allowance For Loan Losses Impairment Method	The following tables present the balance in the allowance for loan losses at December 31, 2017 and 2016 disaggregated on the basis of the Company’s impairment method by class of loans receivable along with the balance of loans receivable by class disaggregated on the basis of the Company’s impairment methodology: December 31, 2017 Allowance for Loan Losses Loans Receivables (Dollars in thousands) Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Commercial and industrial $ 666 $ 42 $ 624 $ 85,395 $ 582 $ 84,813 Commercial mortgage 1,078 - 1,078 235,946 346 235,600 Commercial construction 147 - 147 30,866 - 30,866 Residential mortgage loans 624 140 484 133,727 637 133,090 Home equity lines of credit 103 - 103 19,295 - 19,295 Other consumer loans 74 - 74 13,780 3 13,777 Unallocated 713 - 713 - - - Total $ 3,405 $ 182 $ 3,223 $ 519,009 $ 1,568 $ 517,441 December 31, 2016 Allowance for Loan Losses Loans Receivables (Dollars in thousands) Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Ending Balance Ending Balance Individually Evaluated for Impairment Ending Balance Collectively Evaluated for Impairment Commercial and industrial $ 647 $ - $ 647 $ 89,625 $ 705 $ 88,920 Commercial mortgage 1,051 - 1,051 223,315 6 223,309 Commercial construction 113 - 113 22,408 - 22,408 Residential mortgage loans 452 47 405 110,538 637 109,901 Home equity lines of credit 188 - 188 24,669 14 24,655 Other consumer loans 97 - 97 17,514 51 17,463 Unallocated 782 - 782 - - - Total $ 3,330 $ 47 $ 3,283 $ 488,069 $ 1,413 $ 486,656
Summary of Impaired Loans by Loan Portfolio Class	The following tables summarize information in regard to impaired loans by loan portfolio class as of December 31, 2017 and 2016 as well as for the years then ended, respectively: December 31, 2017 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 251 $ 906 $ - $ 705 $ 1,268 $ - Commercial mortgage 346 418 - 6 57 - Commercial construction - - - - - - Residential mortgage loans - - - - - - Home equity lines of credit - - - 14 16 - Other consumer loans 3 3 - 51 80 - With an allowance recorded: Commercial and industrial $ 331 $ 331 $ 42 $ - $ - $ - Commercial mortgage - - - - - - Commercial construction - - - - - - Residential mortgage loans 637 637 140 637 637 47 Home equity lines of credit - - - - - - Other consumer loans - - - - - - Total: Commercial and industrial $ 582 $ 1,237 $ 42 $ 705 $ 1,268 $ - Commercial mortgage 346 418 - 6 57 - Commercial construction - - - - - - Residential mortgage loans 637 637 140 637 637 47 Home equity lines of credit - - - 14 16 - Other consumer loans 3 3 - 51 80 - Total $ 1,568 $ 2,295 $ 182 $ 1,413 $ 2,058 $ 47 For the year ended December 31, 2017 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 495 $ 4 $ 1,042 $ 9 Commercial mortgage 88 4 1,200 54 Commercial construction - - - - Residential mortgage loans - - 28 1 Home equity lines of credit - - 94 4 Other consumer loans 3 - 170 7 With an allowance recorded: Commercial and industrial $ 196 $ - $ 503 $ 19 Commercial mortgage 42 - 331 16 Commercial construction - - - - Residential mortgage loans 637 23 638 24 Home equity lines of credit - - - - Other consumer loans - - - - Total: Commercial and industrial $ 691 $ 4 $ 1,545 $ 28 Commercial mortgage 130 4 1,531 70 Commercial construction - - - - Residential mortgage loans 637 23 666 25 Home equity lines of credit - - 94 4 Other consumer loans 3 - 170 7 Total $ 1,461 $ 31 $ 4,006 $ 134
Non-accrual Loans by Classes of Loan Portfolio	The following table presents non-accrual loans by classes of the loan portfolio as of December 31, 2017 and 2016: December 31, 2017 2016 (Dollars in thousands) Commercial and industrial $ 435 $ 705 Commercial mortgage 200 6 Home equity lines of credit - 14 Other consumer loans 3 51 Total loans $ 638 $ 776
Classes of Loan Portfolio within Company's Internal Risk Rating System	The following tables present the classes of the loan portfolio summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company’s internal risk rating system as of December 31, 2017 and 2016: December 31, 2017 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial: Commercial and industrial $ 84,811 $ - $ 584 $ - $ 85,395 Commercial mortgage 235,114 - 832 - 235,946 Commercial construction 30,866 - - - 30,866 Residential mortgage loans 133,727 - - - 133,727 Consumer: Home equity lines of credit 19,295 - - - 19,295 Other consumer loans 13,780 - - - 13,780 Total $ 517,593 $ - $ 1,416 $ - $ 519,009 December 31, 2016 Pass Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial: Commercial and industrial $ 88,503 $ - $ 1,122 $ - $ 89,625 Commercial mortgage 221,544 - 1,771 - 223,315 Commercial construction 22,408 - - - 22,408 Residential mortgage loans 110,538 - - - 110,538 Consumer: Home equity lines of credit 24,655 - 14 - 24,669 Other consumer loans 17,463 - 51 - 17,514 Total $ 485,111 $ - $ 2,958 $ - $ 488,069
Classes of Loan Portfolio Summarized by Past Due Status	The performance and credit quality of the loan portfolio is also monitored by analyzing the age of the loans receivable as determined by the length of time a recorded payment is past due. The following tables present the classes of the loan portfolio summarized by the past due status as of December 31, 2017 and 2016: December 31, 2017 30-59 Days Past Due 60-89 Days Past Due Greater Than 90 Days Total Past Due Current Total Loans Receivables (Dollars in thousands) Commercial: Commercial and industrial $ 36 $ 284 $ 698 $ 1,018 $ 84,377 $ 85,395 Commercial mortgage 2,206 - 200 2,406 233,540 235,946 Commercial construction - - - - 30,866 30,866 Residential mortgage loans 329 - - 329 133,398 133,727 Consumer: Home equity lines of credit - - - - 19,295 19,295 Other consumer loans 33 65 3 101 13,679 13,780 Total $ 2,604 $ 349 $ 901 $ 3,854 $ 515,155 $ 519,009 December 31, 2016 30-59 Days Past Due 60-89 Days Past Due Greater Than 90 Days Total Past Due Current Total Loans Receivables (Dollars in thousands) Commercial: Commercial and industrial $ 293 $ 60 $ 632 $ 985 $ 88,640 $ 89,625 Commercial mortgage - - 6 6 223,309 223,315 Commercial construction - - - - 22,408 22,408 Residential mortgage loans - 104 - 104 110,434 110,538 Consumer: Home equity lines of credit - - - - 24,669 24,669 Other consumer loans 17 - 4 21 17,493 17,514 Total $ 310 $ 164 $ 642 $ 1,116 $ 486,953 $ 488,069
Summary of Information Regarding Troubled Debt Restructurings	The following table reflects information regarding TDR’s entered into by the Company for the period ended December 31, 2017. For the year ended December 31, 2017 Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments (Dollars in thousands) Troubled debt restructurings: Commercial and industrial 2 $ 221 $ 206 Commercial mortgage 1 164 149 Total 3 $ 385 $ 355 The following tables summarize the balance of outstanding TDR’s at December 31, 2017 and December 31, 2016: Number of Loans Performing TDR's Non-Performing TDR's Total TDRs (Dollars in thousands) December 31, 2017 Commercial and Industrial 2 $ 147 $ 55 $ 202 Commercial mortgage loans 1 146 - 146 Residential mortgage loans 1 637 - 637 Total 4 $ 930 $ 55 $ 985 Number of Loans Performing TDR's Non-Performing TDR's Total TDRs (Dollars in thousands) December 31, 2016 Residential mortgage loans 1 $ 637 $ - $ 637 Home equity lines of credit 1 - 14 14 Other consumer loans 1 - 20 20 Total 3 $ 637 $ 34 $ 671

Transactions with Executive O34

Transactions with Executive Officers, Directors and Principal Shareholders (Tables)	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Schedule of Loans with Related Parties	Activity of these loans is as follows: December 31, 2017 2016 (Dollars in thousands) Balance, beginning of year $ 5,466 $ 5,722 New loans 2,549 2,174 Loans of Retired Officers (773 ) - Repayments (1,686 ) (2,430 ) Balance at end of year $ 5,556 $ 5,466

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property Plant And Equipment [Abstract]
Components of Premises and Equipment	The components of premises and equipment at December 31, 2017 and 2016 are as follows: December 31, 2017 2016 (Dollars in thousands) Buildings $ 1,143 $ 1,143 Leasehold improvements 1,424 1,422 Furniture, fixtures and equipment 799 818 Automobiles 20 24 Computer equipment and data processing software 765 736 4,151 4,143 Accumulated depreciation (2,544 ) (2,388 ) $ 1,607 $ 1,755

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Banking And Thrift [Abstract]
Components of Deposits	The components of deposits at December 31, 2017 and 2016 are as follows: As of December 31, 2017 2016 (Dollars in thousands) Demand, non-interest bearing $ 65,634 $ 54,817 Demand, interest-bearing 29,918 57,168 Money market and savings accounts 145,355 113,655 Time, $100 and over 84,358 45,311 Time, other 197,885 196,737 $ 523,150 $ 467,688
Scheduled Maturities of Time Deposits	At December 31, 2017, the scheduled maturities of time deposits are as follows: December 31, 2017 (Dollars in thousands) 2018 $ 155,229 2019 76,431 2020 24,421 2021 17,942 2022 8,220 Thereafter - $ 282,243

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Schedule of Short-term Borrowed Funds	The following table outlines First Priority’s various sources of short-term borrowed funds at or for the years ended December 31, 2017 and 2016. The maximum balance represents the highest indebtedness for each category of short-term borrowed funds at any month-end during each of the years shown. December 31, 2017 2016 (Dollars in thousands) Federal funds purchased: Balance at year end $ - $ - Weighted average rate at year end - - Maximum month-end balance $ 19 $ - Average daily balance during the year $ 3 $ 2 Weighted average rate during the year 1.52 % 0.76 % FHLB short-term borrowings: Balance at year end $ 15,625 $ 56,164 Weighted average rate at year end 1.54 % 0.74 % Maximum month-end balance $ 70,400 $ 60,688 Average daily balance during the year $ 26,446 $ 22,508 Weighted average rate during the year 1.15 % 0.61 %
Scheduled Maturities of Long-term Borrowings with FHLB	At December 31, 2017, scheduled maturities of long-term borrowings with the FHLB are as follows: Balance Weighted Average Rate (Dollars in thousands) 2018 $ 3,000 1.31 % 2019 2,000 1.64 % 2020 4,000 1.75 % $ 9,000 1.58 %

Lease Commitments (Tables)

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Future Minimum Lease Payments	Pursuant to the terms of non-cancellable lease agreements in effect at December 31, 2017, pertaining to premises, future minimum lease payments by year and in the aggregate, under these lease agreements, are as follows:

Stock Compensation Program (Tab

Stock Compensation Program (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Stock Option Plan	A summary of the Stock Option Plan is presented below: For the Years Ended December 31, 2017 2016 Options to Purchase Common Shares Weighted Average Exercise Price Options to Purchase Common Shares (1) Weighted Average Exercise Price Outstanding at beginning of year 955,060 $6.35 970,193 $6.41 Granted during year 7,500 7.92 37,500 5.93 Forfeited/cancelled during the year (40,000) 6.19 (32,500) 5.91 Exercised - - (2,000) 5.73 Expired (114,690) 10.08 (18,133) 9.65 Outstanding at end of year 807,870 $5.84 955,060 $6.35 Exercisable at end of year 239,870 $6.62 354,560 $7.74 (1) Included in options outstanding and exercisable at December 31, 2016 are 100,000 organizer options, with an exercise price of $10.00 per share which expired on October 18, 2017.
Weighted Average Assumption of Fair Value Option Grant	The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions: 2017 2016 Dividend yield 0.0% 0.0% Expected life 7 years 7 years Expected volatility 23% 26% Risk-free interest rate 2.04% 1.63% Weighted average fair value $2.34 $1.83
Summary of Restricted Stock Award Activity	A summary of restricted stock award activity is presented below for the years presented: For the Years Ended December 31, 2017 2016 Outstanding unvested shares at beginning of year 89,450 165,474 Shares granted during year 52,700 36,250 Shares forfeited/cancelled during year (4,450 ) (725 ) Vested Shares during this period (13,550 ) (111,549 ) Outstanding unvested shares at end of year 124,150 89,450

Federal Income Taxes (Tables)

Federal Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Components of Net Deferred Tax Asset	The components of the net deferred tax asset at December 31, 2017 and 2016 are as follows: December 31, 2017 2016 (Dollars in thousands) Deferred tax assets: Allowance for loan losses $ 583 $ 701 Organization and start-up costs 35 75 Net operating loss carryforwards - 833 Net operating loss carryforwards--acquired 231 670 Contribution carryforward - 9 Non-qualified stock option expense 208 283 Other real estate owned deferred costs 18 215 Unrealized loss on investment securities 3 21 Alternative minimum tax carryforward - 199 Property and equipment 35 35 Unfunded loan commitment reserve 7 12 Total Deferred Tax Assets 1,120 3,053 Deferred tax liabilities: Acquisition accounting 66 135 Cash basis conversions 120 206 Discount accretion on investment securities 11 15 Total Deferred Tax Liabilities 197 356 Net Deferred Tax Asset $ 923 $ 2,697
Schedule of Income Tax Expense	The following table presents the income tax expense for the years ended December 31, 2017 and 2016. For the year ended December 31, 2017 2016 (Dollars in thousands) Current tax expense: Federal $ 227 $ 94 State 19 46 Deferred Income tax expense: Federal 1,755 988 Income tax expense $ 2,001 $ 1,128
Schedule of Reconciliation of Statutory Federal Income Tax Expense to Income Tax Expense	Reconciliation of the statutory federal income tax expense computed at 34% to the income tax expense included in the consolidated statements of income is as follows: For the year ended December 31, 2017 2016 (Dollars in thousands) Federal income tax expense at statutory rate of 34%: $ 1,516 $ 1,165 Increase (decrease) in taxes resulting from: Tax exempt interest income, net (159 ) (109 ) Tax exempt income on bank owned life insurance (24 ) (26 ) Applicable state income taxes 13 30 Stock compensation adjustment for expired options (3 ) 30 Tax Cut and Jobs Act adjustment to deferred tax asset 571 - Other 87 38 Federal income tax expense $ 2,001 $ 1,128

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2017
Banking And Thrift [Abstract]
Schedule of Bank's Capital Amounts and Ratios	The Bank’s capital amounts (dollars in thousands) and ratios at December 31, 2017 and 2016 are presented below: Actual Minimum Capital Requirement To be Well Capitalized under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2017 Total capital (to risk-weighted assets) $ 59,886 12.15 % $ 39,434 >8.0 % $ >49,292 >10.0 % Tier 1 capital (to risk-weighted assets) 47,215 9.58 >29,575 >6.0 >39,434 >8.0 Tier 1 common equity capital (to risk-weighted assets) 47,215 9.58 >22,182 >4.5 >32,040 >6.5 Tier 1 capital (to total assets) 47,215 8.08 >23,384 >4.0 >29,230 >5.0 December 31, 2016 Total capital (to risk-weighted assets) $ 55,900 12.07 % $ >37,064 >8.0 % $ >46,330 >10.0 % Tier 1 capital (to risk-weighted assets) 43,328 9.35 >27,798 >6.0 >37,064 >8.0 Tier 1 common equity capital (to risk-weighted assets) 43,328 9.35 >20,848 >4.5 >30,114 >6.5 Tier 1 capital (to total assets) 43,328 7.87 >22,023 >4.0 >27,528 >5.0

Fair Value Measurements and F42

Fair Value Measurements and Fair Values of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Summary of Financial Assets Measured at Fair Value on Recurring Basis
Summary of Estimated Fair Values of Company's Financial Instruments	At December 31, 2017 and 2016, the estimated fair values of the Company’s financial instruments were as follows: December 31, 2017 Carrying Amount Fair Value Level 1 Level 2 Level 3 (Dollars in thousands) Assets: Cash and cash equivalents $ 8,257 $ 8,257 $ 8,257 $ - $ - Securities available for sale 52,373 52,373 35 52,338 - Securities held to maturity 18,665 19,665 - 19,665 - Loans receivable, net 515,522 519,721 - - 519,721 Restricted stock 1,416 1,416 - 1,416 - Accrued interest receivable 2,007 2,007 - 2,007 - Liabilities: Deposits 523,150 521,922 - 521,922 - Federal Home Loan Bank of Pittsburgh advances 24,625 24,546 - 24,546 - Subordinated debt 9,231 9,539 - 9,539 - Accrued interest payable 844 844 - 844 - Off-balance sheet credit related instruments: Commitments to extend credit - - - - -
Summary of Financial Assets Measured at Fair Value on Nonrecurring Basis	For financial assets measured at fair value on a nonrecurring basis, the fair value measurements by level within the fair value hierarchy used at December 31, 2017 and 2016 are as follows: Description Fair Value (Level 1) Quoted Prices in Active Markets for Identical Assets (Level 2) Significant Other Observable Inputs (Level 3) Significant Unobservable Inputs (Dollars in thousands) As of December 31, 2017: Impaired loans $ 1,119 $ - $ - $ 1,119 Other real estate owned 69 - - 69 Total assets measured at fair value on a nonrecurring basis $ 1,188 $ - $ - $ 1,188 As of December 31, 2016: Impaired loans $ 1,257 $ - $ - $ 1,257 Other real estate owned 679 - - 679 Total assets measured at fair value on a nonrecurring basis $ 1,936 $ - $ - $ 1,936
Quantitative Information about Level 3 Fair Value Measurements	Quantitative information about Level 3 fair value measurements at December 31, 2017 is included in the table below: Quantitative information about Level 3 fair value measurements at December 31, 2016 is included in the table below: Fair Value Valuation Techniques Unobservable Inputs (2) Estimated Ratings (Weighted Average) (3) (Dollars in thousands) Impaired loans $ 1,257 Appraisal of real estate collateral (1) Appraisal adjustments 0%-25% (4.87%) Valuation of business assets used as collateral(4) Valuation adjustments 0%-80% (75.32%) Liquidation expenses 0%-10% (8.01%) Other real estate owned $ 679 Appraisal of collateral(1) Appraisal adjustments 0% (0.00%) Liquidation expenses 5%-7% (6.94%) (1) Fair Value is generally determined through independent appraisals of the underlying collateral, which include Level 3 inputs that are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. (3) The range and weighted average of qualitative factors such as economic conditions and estimated liquidation expenses are presented as a percent of the appraised value. (4) Fair value is generally determined based on specific customer’s business assets, such as accounts receivable, which have been used as collateral for loans.

Parent Company Only Financial43

Parent Company Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Balance Sheets	CONDENSED BALANCE SHEETS December 31, 2017 2016 (Dollars in thousands) Assets Cash and cash equivalents $ 27 $ 243 Investment in subsidiary 50,118 47,454 Deferred taxes 238 349 Receivable due from bank subsidiary 119 - Other assets 18 32 Total assets $ 50,520 $ 48,078 Liabilities and shareholders' equity Other liabilities $ 24 $ 32 Shareholders' equity 50,496 48,046 Total liabilities and shareholders' equity $ 50,520 $ 48,078
Schedule of Condensed Income Statements	CONDENSED INCOME STATEMENTS For the year ended December 31, 2017 2016 (Dollars in thousands) Dividend income from subsidiary, net of dividends paid by Bank $ 306 $ 407 Interest from subsidiary 1 2 Total income 307 409 Non-interest expenses 103 161 Income before taxes and equity in undistributed net income of subsidiary 204 248 Federal income tax expense (benefit) 112 (54 ) Income before equity in undistributed net income of subsidiary 92 302 Equity in undistributed net income of subsidiary 2,366 1,998 Net income $ 2,458 $ 2,300
Schedule of Statements of Comprehensive Income	STATEMENTS OF COMPREHENSIVE INCOME For the year ended December 31, 2017 2016 (Dollars in thousands) Net income $ 2,458 $ 2,300 Other comprehensive (loss) income: Securities available for sale: Change in unrealized gain on securities available for sale 484 405 Reclassification adjustment for realized gains included in net income (416 ) (795 ) Tax effect (23 ) 133 Net (losses) gains arising during the period 45 (257 ) Net unrealized holding losses on securities transferred between available for sale and held to maturity: Amortization of net unrealized holding losses to income during the period……………………………………..…….…………………………………… (14 ) (31 ) Tax effect 5 10 Net unrealized holding losses on securities transferred during the period (9 ) (21 ) Total other comprehensive (loss) income 36 (278 ) Total comprehensive income $ 2,494 $ 2,022
Schedule of Condensed Statements of Cash flows	CONDENSED STATEMENTS OF CASH FLOWS For the year ended December 31, 2017 2016 (Dollars in thousands) Operating activities: Net income $ 2,458 $ 2,300 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiary, net of dividends from Bank (2,628 ) (2,326 ) Stock based compensation distribution from Bank 262 328 Deferred income tax expense (benefit) 111 (54 ) Net increase in other assets (105 ) (4 ) Net (decrease) increase in other liabilities (8 ) 3 Net cash provided by operating activities 90 247 Financing activities: Redemptions of preferred stock - (6,000 ) Proceeds from the exercise of common stock options - 12 Cash dividends paid on preferred stock (306 ) (427 ) Net cash used in financing activities (306 ) (6,415 ) Net decrease in cash (216 ) (6,168 ) Cash and cash equivalents at beginning of the period 243 6,411 Cash and cash equivalents at end of period $ 27 $ 243

Summary of Significant Accoun44

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)BranchLoanProductionSegment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Summary Of Significant Accounting Policies [Line Items]
Entity date of formation	Feb. 13, 2007
Agreement of reorganization and merger date	May 11, 2007
Number of retail branch office locations | Branch	7
Number of loan production office | LoanProduction	1
Cash reserve balances	$ 1,700,000	$ 1,900,000
Loans receivable, payment terms	The accrual of interest is discontinued when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about further collectability of principal or interest, even though the loan is currently performing.
Threshold Period Past Due for Write-off of Financing Receivable	90 days
Purchased credit impairment loans	$ 55,000	215,000
Credit impairment loans non-accretable discount difference	352,000	362,000
Portion of allowance for loan losses	$ 0
Residential mortgages amortization period, description	Residential mortgages have amortizations up to 30 years
Home equity loans maturity period, description	Home equity loans have maturities of no more than 15 years.
Expenses related to matching contributions	$ 155,000	149,000
Amortization period of core deposit and other intangible assets	10 years
Number of reportable segments | Segment	1
Uncertain tax positions		0	$ 0
Stock based compensation expense	$ 262,000	328,000
Tax benefit recognized related to stock-based compensation	$ 0	0
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Commercial real estate percentage of loan to value ratio	80.00%
Residential mortgages amortization period	30 years
Home equity loans maturity period	15 years
Residential mortgages home equity percentage of loan to value ratio	80.00%
Estimated useful lives of related assets	20 years
Maximum [Member] | Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	20 years
Maximum [Member] | Leasehold Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	20 years
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	10 years
Maximum [Member] | Computer Equipment and Data Processing Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	10 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	1 year
Minimum [Member] | Buildings [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	14 years
Minimum [Member] | Leasehold Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	1 year
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	2 years
Minimum [Member] | Automobile [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	5 years
Minimum [Member] | Computer Equipment and Data Processing Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of related assets	1 year
Reserve For Off Balance Sheet Activities [Member]
Summary Of Significant Accounting Policies [Line Items]
Reserve for unfunded lending commitments	$ 35,000	$ 35,000
First Priority Bank [Member]
Summary Of Significant Accounting Policies [Line Items]
Entity date of formation	May 25, 2005

Summary of Significant Accoun45

Summary of Significant Accounting Policies - Schedule of Total Reclassifications from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment out Of Accumulated Other Comprehensive Income [Line Items]
Gains on sale of Investment securities	$ (416)	$ (795)
Interest and dividend Income on taxable securities	(24,053)	(21,246)
Income Tax Expense	2,001	1,128
Total reclassification	(284)	(545)
Reclassification out of Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out Of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense	146	281
Sale of Investment Securities Available for Sale | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out Of Accumulated Other Comprehensive Income [Line Items]
Gains on sale of Investment securities	(416)	(795)
Amortization Of Unrealized Holding Gain (Losses) On Securities Transferred From Available For Sale To Held To Maturity [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out Of Accumulated Other Comprehensive Income [Line Items]
Interest and dividend Income on taxable securities	$ (14)	$ (31)

Summary of Significant Accoun46

Summary of Significant Accounting Policies - Schedule of Accumulated Other Comprehensive income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss) on available for sale securities	$ 485	$ 405
Total	(6)	(42)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss) on available for sale securities	(4)	(50)
Net unrealized holding gains on securities transferred from available for sale to held to maturity	(2)	8
Total	$ (6)	$ (42)

Recently Issued Accounting St47

Recently Issued Accounting Standards - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)Leaseshares	Dec. 31, 2016USD ($)shares
Item Effected [Line Items]
Tax benefit recognized related to stock-based compensation	$ 0	$ 0
Forfeited of restricted common stock , shares | shares	4,450	725
Accounting Standards Update 2016-02
Item Effected [Line Items]
Number of leases classified as operating leases | Lease	9
Estimated right-of-use asset and corresponding lease liability	$ 6,400,000
Accounting Standards Update 2016-09
Item Effected [Line Items]
Tax benefit recognized related to stock-based compensation	$ 10,000
Forfeited of restricted common stock , shares | shares	4,450

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Anti-dilutive securities not included in the computation of diluted earnings per common share	54,029	148,174

Earnings Per Common Share - Sch

Earnings Per Common Share - Schedule of Calculations of Basic and Diluted Earnings per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income	$ 2,458	$ 2,300
Less: preferred stock dividends	(306)	(407)
Income to Common Shareholders	$ 2,152	$ 1,893
Average basic common shares outstanding	6,559	6,514
Effect of dilutive stock options	226	56
Average number of common shares used to calculate diluted earnings per common share	6,785	6,570
Basic earnings per common share	$ 0.33	$ 0.29
Diluted earnings per common share	$ 0.32	$ 0.29

Earnings Per Common Share - S50

Earnings Per Common Share - Schedule of Amount of Preferred Stock Dividends Related to Each Series of Preferred Stock (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Preferred dividends	$ 306	$ 407
Series A Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred dividends		77
Series B Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred dividends		4
Series C Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred dividends	$ 306	$ 326

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Investments Debt And Equity Securities [Abstract]
Net unrealized holding gains (losses) amortized adjustment related to debt securities, before taxes	$ 3	$ 12
Gross gains on sale of available for sale securities	416	795
Securities pledged to secure public fund deposits	69,000	42,000
Securities pledged to secure borrowings	$ 20	$ 40

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost, Unrealized Gains and Losses, and Estimated Fair Value of Company's Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 52,379	$ 70,635
Gross Unrealized Gains	267	117
Gross Unrealized Losses	(273)	(192)
Fair Value	52,373	70,560
Obligations of U.S. Government Agencies and Corporations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	20,991	45,984
Gross Unrealized Gains		8
Gross Unrealized Losses	(20)	(5)
Fair Value	20,971	45,987
Obligations of States and Political Subdivisions [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	4,218	6,103
Gross Unrealized Gains	168	46
Gross Unrealized Losses		(10)
Fair Value	4,386	6,139
Federal Agency Collateralized Mortgage Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	111	190
Gross Unrealized Losses	(2)	(1)
Fair Value	109	189
Other Debt Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,500	1,500
Gross Unrealized Gains	83	30
Fair Value	1,583	1,530
Federal Agency Mortgage-Backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	25,524	13,863
Gross Unrealized Gains	16	33
Gross Unrealized Losses	(251)	(176)
Fair Value	25,289	13,720
Money Market Mutual Fund [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	35	2,995
Fair Value	$ 35	$ 2,995

Securities - Summary of Amort53

Securities - Summary of Amortized Cost, Unrealized Gains and Losses, and Estimated Fair Value of Company's Investment Securities Held to Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	$ 18,665	$ 19,043
Gross Unrealized Gains	1,004	574
Gross Unrealized Losses	(4)	(33)
Securities held to maturity, fair value	19,665	19,584
Obligations of States and Political Subdivisions [Member]
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	18,183	18,561
Gross Unrealized Gains	953	561
Gross Unrealized Losses	(4)	(33)
Securities held to maturity, fair value	19,132	19,089
Other Debt Securities [Member]
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	482	482
Gross Unrealized Gains	51	13
Securities held to maturity, fair value	$ 533	$ 495

Securities - Schedule of Aggreg

Securities - Schedule of Aggregate Unrealized Losses and Aggregate Fair Value of Underlying Securities Available for Sale (Detail) $ in Thousands	Dec. 31, 2017USD ($)Positions	Dec. 31, 2016USD ($)Positions
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Fair Value Less than 12 Months	$ 24,074	$ 14,810
Available for Sale, Unrealized Losses Less than 12 Months	$ (179)	$ (181)
Available for Sale, Count Less than 12 Months | Positions	15	16
Available for Sale, Fair Value More than 12 Months	$ 5,521	$ 911
Available for Sale, Unrealized Losses More than 12 Months	$ (94)	$ (11)
Available for Sale, Count More than 12 Months | Positions	7	2
Available for Sale, Total Fair Value	$ 29,595	$ 15,721
Available for Sale, Total Unrealized Losses	$ (273)	$ (192)
Available for Sale, Total Count | Positions	22	18
Obligations of U.S. Government Agencies and Corporations [Member]
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Fair Value Less than 12 Months	$ 3,975	$ 3,984
Available for Sale, Unrealized Losses Less than 12 Months	$ (17)	$ (5)
Available for Sale, Count Less than 12 Months | Positions	3	4
Available for Sale, Fair Value More than 12 Months	$ 1,996
Available for Sale, Unrealized Losses More than 12 Months	$ (3)
Available for Sale, Count More than 12 Months | Positions	2
Available for Sale, Total Fair Value	$ 5,971	$ 3,984
Available for Sale, Total Unrealized Losses	$ (20)	$ (5)
Available for Sale, Total Count | Positions	5	4
Federal Agency Mortgage-Backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Fair Value Less than 12 Months	$ 20,099	$ 10,667
Available for Sale, Unrealized Losses Less than 12 Months	$ (162)	$ (175)
Available for Sale, Count Less than 12 Months | Positions	12	11
Available for Sale, Fair Value More than 12 Months	$ 3,416	$ 39
Available for Sale, Unrealized Losses More than 12 Months	$ (89)	$ (1)
Available for Sale, Count More than 12 Months | Positions	4	1
Available for Sale, Total Fair Value	$ 23,515	$ 10,706
Available for Sale, Total Unrealized Losses	$ (251)	$ (176)
Available for Sale, Total Count | Positions	16	12
Federal Agency Collateralized Mortgage Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Fair Value Less than 12 Months		$ 159
Available for Sale, Unrealized Losses Less than 12 Months		$ (1)
Available for Sale, Count Less than 12 Months | Positions		1
Available for Sale, Fair Value More than 12 Months	$ 109
Available for Sale, Unrealized Losses More than 12 Months	$ (2)
Available for Sale, Count More than 12 Months | Positions	1
Available for Sale, Total Fair Value	$ 109	$ 159
Available for Sale, Total Unrealized Losses	$ (2)	$ (1)
Available for Sale, Total Count | Positions	1	1
Obligations of States and Political Subdivisions [Member]
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Fair Value More than 12 Months		$ 872
Available for Sale, Unrealized Losses More than 12 Months		$ (10)
Available for Sale, Count More than 12 Months | Positions		1
Available for Sale, Total Fair Value		$ 872
Available for Sale, Total Unrealized Losses		$ (10)
Available for Sale, Total Count | Positions		1

Securities - Schedule of Aggr55

Securities - Schedule of Aggregate Unrealized Losses and Aggregate Fair Value of Underlying Securities Held to Maturity (Detail) $ in Thousands	Dec. 31, 2017USD ($)Positions	Dec. 31, 2016USD ($)Positions
Schedule Of Held To Maturity Securities [Line Items]
Held to Maturity, Fair Value Less than 12 Months	$ 195	$ 2,289
Held to Maturity, Unrealized Losses Less than 12 Months	$ (1)	$ (33)
Held to Maturity, Count Less than 12 Months | Positions	1	7
Held to Maturity, Fair Value More than 12 Months	$ 315
Held to Maturity, Unrealized Losses More than 12 Months	$ (3)
Held to Maturity, Count More than 12 Months | Positions	1
Held to Maturity, Total Fair Value	$ 510	$ 2,289
Held to Maturity, Total Unrealized Losses	$ (4)	$ (33)
Held to Maturity, Total Count | Positions	2	7
Obligations of States and Political Subdivisions [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held to Maturity, Fair Value Less than 12 Months	$ 195	$ 2,289
Held to Maturity, Unrealized Losses Less than 12 Months	$ (1)	$ (33)
Held to Maturity, Count Less than 12 Months | Positions	1	7
Held to Maturity, Fair Value More than 12 Months	$ 315
Held to Maturity, Unrealized Losses More than 12 Months	$ (3)
Held to Maturity, Count More than 12 Months | Positions	1
Held to Maturity, Total Fair Value	$ 510	$ 2,289
Held to Maturity, Total Unrealized Losses	$ (4)	$ (33)
Held to Maturity, Total Count | Positions	2	7

Securities - Summary of Amort56

Securities - Summary of Amortized Cost and Fair Value of Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost, Due within one year, Available for Sale Securities	$ 18,997
Amortized Cost, Due after one year through five years, Available for Sale Securities	1,994
Amortized Cost, Due after five years through ten years, Available for Sale Securities	1,500
Amortized Cost, Due after ten years, Available for Sale Securities	4,218
Total Amortized Cost, Available for Sale Securities	26,709
Securities available for sale, amortized cost	52,379
Fair Value, Due within one year, Available for Sale Securities	18,993
Fair Value, Due after one year through five years, Available for Sale Securities	1,978
Fair Value, Due after five years through ten years, Available for Sale Securities	1,583
Fair Value, Due after ten years, Available for Sale Securities	4,386
Total Fair Value, Available for Sale Securities	26,940
Fair Value	52,373
Amortized Cost, Due after one year through five years, Held to Maturity	1,208
Amortized Cost, Due after five years through ten years, Held to Maturity	1,826
Amortized Cost, Due after ten years, Held to Maturity	15,631
Total Amortized Cost, Held to Maturity	18,665
Held to Maturity, Amortized Cost	18,665	$ 19,043
Fair Value, Due after one year through five years, Held to Maturity	1,225
Fair Value, Due after five years through ten years, Held to Maturity	1,890
Fair Value, Due after ten years, Held to Maturity	16,550
Total Fair Value, Held to Maturity	19,665
Held to Maturity, Fair Value	19,665	$ 19,584
Federal Agency Collateralized Mortgage Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities available for sale, amortized cost	111
Fair Value	109
Federal Agency Mortgage-Backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities available for sale, amortized cost	25,524
Fair Value	25,289
Money Market Mutual Fund [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities available for sale, amortized cost	35
Fair Value	$ 35

Loans Receivable and Related 57

Loans Receivable and Related Allowance for Loan Losses - Summary of Loans Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commercial:
Commercial and industrial	$ 85,395	$ 89,625
Commercial mortgage	235,946	223,315
Commercial construction	30,866	22,408
Total commercial	352,207	335,348
Residential mortgage loans	133,727	110,538
Consumer:
Home equity lines of credit	19,295	24,669
Other consumer loans	13,780	17,514
Total consumer	33,075	42,183
Total loans	519,009	488,069
Allowance for loan losses	(3,405)	(3,330)	$ (2,795)
Net deferred loan cost (fees)	(82)	174
Net loans	$ 515,522	$ 484,913

Loans Receivable and Related 58

Loans Receivable and Related Allowance for Loan Losses - Additional Information (Detail)	1 Months Ended				12 Months Ended
	Jan. 31, 2018USD ($)	Dec. 31, 2017USD ($)loan	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2017USD ($)ContractBorrowerloan	Dec. 31, 2016USD ($)Contractloan	Aug. 31, 2016USD ($)
Accounts Notes And Loans Receivable [Line Items]
Purchase of performing commercial loans							$ 64,600,000
Purchased performing residential real estate loans		$ 9,000,000	$ 7,000,000	$ 12,700,000
Non-accruing loans interest income not yet recognized					$ 72,000	$ 93,000
Loans past due 90 days or more and still accruing interest		263,000			$ 263,000	$ 0
Number of Contracts | Contract					3	0
Loss on payment modifications					$ 30,000
Number of Borrowers | Borrower					1
Payment modification		$ 55,000			$ 55,000
Number of Loans | loan		4			4	3
Commitments to lend additional funds		$ 0			$ 0	$ 0
Foreclosed residential real estate properties		466,000			$ 466,000
Subsequent Event [Member]
Accounts Notes And Loans Receivable [Line Items]
Loss on contracts	$ 0
Greater Than 90 Days [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | Contract					1
Commercial Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Acquisition premiums							$ 197,000
TDR in default and non-accrual		$ 55,000			$ 55,000
Number of Loans | loan		1			1
Residential Mortgage Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Acquisition premiums		$ 117,000		$ 280,000	$ 117,000
Acquisition discount			$ 35,000
Number of Loans | loan		1			1	1
Foreclosed residential real estate properties		$ 0			$ 0
Commercial and Industrial [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | Contract					2
Commercial Mortgage [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | Contract					1

Loans Receivable and Related 59

Loans Receivable and Related Allowance for Loan Losses - Activity in Allowance for Loan Losses by Loan Class (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	$ 3,330	$ 2,795
Allowance for Loan Losses, Charge-offs	(335)	(222)
Allowance for Loan Losses, Recoveries	25	47
Allowance for Loan Losses, Provision for loan losses	385	710
Allowance for Loan Losses, Ending Balance	3,405	3,330
Residential Mortgage Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	452	259
Allowance for Loan Losses, Provision for loan losses	172	193
Allowance for Loan Losses, Ending Balance	624	452
Home Equity Lines of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	188	167
Allowance for Loan Losses, Recoveries	2	9
Allowance for Loan Losses, Provision for loan losses	(87)	12
Allowance for Loan Losses, Ending Balance	103	188
Commercial and Industrial [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	647	631
Allowance for Loan Losses, Charge-offs	(281)	(75)
Allowance for Loan Losses, Recoveries	4	21
Allowance for Loan Losses, Provision for loan losses	296	70
Allowance for Loan Losses, Ending Balance	666	647
Commercial Mortgage [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	1,051	831
Allowance for Loan Losses, Charge-offs	(30)	(72)
Allowance for Loan Losses, Recoveries		2
Allowance for Loan Losses, Provision for loan losses	57	290
Allowance for Loan Losses, Ending Balance	1,078	1,051
Commercial Construction [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	113	56
Allowance for Loan Losses, Provision for loan losses	34	57
Allowance for Loan Losses, Ending Balance	147	113
Other Consumer Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	97	84
Allowance for Loan Losses, Charge-offs	(24)	(75)
Allowance for Loan Losses, Recoveries	19	15
Allowance for Loan Losses, Provision for loan losses	(18)	73
Allowance for Loan Losses, Ending Balance	74	97
Unallocated [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Beginning Balance	782	767
Allowance for Loan Losses, Provision for loan losses	(69)	15
Allowance for Loan Losses, Ending Balance	$ 713	$ 782

Loans Receivable and Related 60

Loans Receivable and Related Allowance for Loan Losses - Balance in Allowance for Loan Losses Disaggregated on Basis of Company's Impairment Method (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	$ 3,405	$ 3,330	$ 2,795
Allowance for Loan Losses, Ending Balance: Individually Evaluated for Impairment	182	47
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	3,223	3,283
Total loans	519,009	488,069
Loans Receivables, Ending Balance: Individually Evaluated for Impairment	1,568	1,413
Loans Receivables, Ending Balance: Collectively Evaluated for Impairment	517,441	486,656
Residential Mortgage Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	624	452	259
Allowance for Loan Losses, Ending Balance: Individually Evaluated for Impairment	140	47
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	484	405
Total loans	133,727	110,538
Loans Receivables, Ending Balance: Individually Evaluated for Impairment	637	637
Loans Receivables, Ending Balance: Collectively Evaluated for Impairment	133,090	109,901
Home Equity Lines of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	103	188	167
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	103	188
Total loans	19,295	24,669
Loans Receivables, Ending Balance: Individually Evaluated for Impairment		14
Loans Receivables, Ending Balance: Collectively Evaluated for Impairment	19,295	24,655
Commercial and Industrial [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	666	647	631
Allowance for Loan Losses, Ending Balance: Individually Evaluated for Impairment	42
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	624	647
Total loans	85,395	89,625
Loans Receivables, Ending Balance: Individually Evaluated for Impairment	582	705
Loans Receivables, Ending Balance: Collectively Evaluated for Impairment	84,813	88,920
Commercial Mortgage [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	1,078	1,051	831
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	1,078	1,051
Total loans	235,946	223,315
Loans Receivables, Ending Balance: Individually Evaluated for Impairment	346	6
Loans Receivables, Ending Balance: Collectively Evaluated for Impairment	235,600	223,309
Commercial Construction [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	147	113	56
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	147	113
Total loans	30,866	22,408
Loans Receivables, Ending Balance: Collectively Evaluated for Impairment	30,866	22,408
Other Consumer Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	74	97	84
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	74	97
Total loans	13,780	17,514
Loans Receivables, Ending Balance: Individually Evaluated for Impairment	3	51
Loans Receivables, Ending Balance: Collectively Evaluated for Impairment	13,777	17,463
Unallocated [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	713	782	$ 767
Allowance for Loan Losses, Ending Balance: Collectively Evaluated for Impairment	$ 713	$ 782

Loans Receivable and Related 61

Loans Receivable and Related Allowance for Loan Losses - Summary of Impaired Loans by Loan Portfolio Class (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Total, Related Allowance	$ 182	$ 47
Net recorded investment	1,568	1,413
Total, Unpaid Principle Balance	2,295	2,058
Total, Average Recorded Investment	1,461	4,006
Total, Interest Income Recognized	31	134
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	251	705
With no related allowance recorded, Unpaid Principle Balance	906	1,268
Total, Related Allowance	42
With an allowance recorded, Recorded Investment	331
With an allowance recorded, Unpaid Principle Balance	331
Net recorded investment	582	705
Total, Unpaid Principle Balance	1,237	1,268
With no related allowance recorded, Average Recorded Investment	495	1,042
With no related allowance recorded, Interest Income Recognized	4	9
With an allowance recorded, Average Recorded Investment	196	503
With an allowance recorded, Interest Income Recognized		19
Total, Average Recorded Investment	691	1,545
Total, Interest Income Recognized	4	28
Commercial Mortgage [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	346	6
With no related allowance recorded, Unpaid Principle Balance	418	57
Net recorded investment	346	6
Total, Unpaid Principle Balance	418	57
With no related allowance recorded, Average Recorded Investment	88	1,200
With no related allowance recorded, Interest Income Recognized	4	54
With an allowance recorded, Average Recorded Investment	42	331
With an allowance recorded, Interest Income Recognized		16
Total, Average Recorded Investment	130	1,531
Total, Interest Income Recognized	4	70
Other Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	3	51
With no related allowance recorded, Unpaid Principle Balance	3	80
Net recorded investment	3	51
Total, Unpaid Principle Balance	3	80
With no related allowance recorded, Average Recorded Investment	3	170
With no related allowance recorded, Interest Income Recognized		7
Total, Average Recorded Investment	3	170
Total, Interest Income Recognized		7
Residential Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Total, Related Allowance	140	47
With an allowance recorded, Recorded Investment	637	637
With an allowance recorded, Unpaid Principle Balance	637	637
Net recorded investment	637	637
Total, Unpaid Principle Balance	637	637
With no related allowance recorded, Average Recorded Investment		28
With no related allowance recorded, Interest Income Recognized		1
With an allowance recorded, Average Recorded Investment	637	638
With an allowance recorded, Interest Income Recognized	23	24
Total, Average Recorded Investment	637	666
Total, Interest Income Recognized	$ 23	25
Home Equity Lines of Credit [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment		14
With no related allowance recorded, Unpaid Principle Balance		16
Net recorded investment		14
Total, Unpaid Principle Balance		16
With no related allowance recorded, Average Recorded Investment		94
With no related allowance recorded, Interest Income Recognized		4
Total, Average Recorded Investment		94
Total, Interest Income Recognized		$ 4

Loans Receivable and Related 62

Loans Receivable and Related Allowance for Loan Losses - Non-accrual Loans by Classes of Loan Portfolio (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	$ 638	$ 776
Commercial and Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	435	705
Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	200	6
Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	$ 3	51
Home Equity Lines of Credit [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans		$ 14

Loans Receivable and Related 63

Loans Receivable and Related Allowance for Loan Losses - Classes of Loan Portfolio within Company's Internal Risk Rating System (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Commercial:
Commercial and industrial	$ 85,395	$ 89,625
Commercial mortgage	235,946	223,315
Commercial construction	30,866	22,408
Residential mortgage loans	133,727	110,538
Consumer:
Home equity lines of credit	19,295	24,669
Other consumer loans	13,780	17,514
Total loans	519,009	488,069
Pass [Member]
Commercial:
Commercial and industrial	84,811	88,503
Commercial mortgage	235,114	221,544
Commercial construction	30,866	22,408
Residential mortgage loans	133,727	110,538
Consumer:
Home equity lines of credit	19,295	24,655
Other consumer loans	13,780	17,463
Total loans	517,593	485,111
Substandard [Member]
Commercial:
Commercial and industrial	584	1,122
Commercial mortgage	832	1,771
Consumer:
Home equity lines of credit		14
Other consumer loans		51
Total loans	$ 1,416	$ 2,958

Loans Receivable and Related 64

Loans Receivable and Related Allowance for Loan Losses - Classes of Loan Portfolio Summarized by Past Due Status (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 3,854	$ 1,116
Current	515,155	486,953
Total loans	519,009	488,069
30-59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,604	310
60-89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	349	164
Greater Than 90 Days [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	901	642
Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	329	104
Current	133,398	110,434
Total loans	133,727	110,538
Residential Mortgage Loans [Member] | 30-59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	329
Residential Mortgage Loans [Member] | 60-89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		104
Home Equity Lines of Credit [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current	19,295	24,669
Total loans	19,295	24,669
Commercial and Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,018	985
Current	84,377	88,640
Total loans	85,395	89,625
Commercial and Industrial [Member] | 30-59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	36	293
Commercial and Industrial [Member] | 60-89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	284	60
Commercial and Industrial [Member] | Greater Than 90 Days [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	698	632
Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,406	6
Current	233,540	223,309
Total loans	235,946	223,315
Commercial Mortgage [Member] | 30-59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,206
Commercial Mortgage [Member] | Greater Than 90 Days [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	200	6
Commercial Construction [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current	30,866	22,408
Total loans	30,866	22,408
Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	101	21
Current	13,679	17,493
Total loans	13,780	17,514
Other Consumer Loans [Member] | 30-59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	33	17
Other Consumer Loans [Member] | 60-89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	65
Other Consumer Loans [Member] | Greater Than 90 Days [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 3	$ 4

Loans Receivable and Related 65

Loans Receivable and Related Allowance for Loan Losses - Summary of Information Regarding Bank's Troubled Debt Restructurings (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)Contract	Dec. 31, 2016Contract
Financing Receivable Troubled Debt Restructurings [Line Items]
Number of Contracts | Contract	3	0
Pre-Modification Outstanding Recorded Investments	$ 385
Post-Modification Outstanding Recorded Investments	$ 355
Commercial and Industrial [Member]
Financing Receivable Troubled Debt Restructurings [Line Items]
Number of Contracts | Contract	2
Pre-Modification Outstanding Recorded Investments	$ 221
Post-Modification Outstanding Recorded Investments	$ 206
Commercial Mortgage [Member]
Financing Receivable Troubled Debt Restructurings [Line Items]
Number of Contracts | Contract	1
Pre-Modification Outstanding Recorded Investments	$ 164
Post-Modification Outstanding Recorded Investments	$ 149

Loans Receivable and Related 66

Loans Receivable and Related Allowance for Loan Losses - Summary of Outstanding Troubled Debt Restructurings (Detail) $ in Thousands	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)loan
Financing Receivable Modifications [Line Items]
Number of Loans | loan	4	3
Total TDRs	$ 985	$ 671
Commercial Mortgage [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | loan	1
Total TDRs	$ 146
Commercial and Industrial [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | loan	2
Total TDRs	$ 202
Other Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | loan		1
Total TDRs		$ 20
Residential Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | loan	1	1
Total TDRs	$ 637	$ 637
Home Equity Lines of Credit [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | loan		1
Total TDRs		$ 14
Performing [Member]
Financing Receivable Modifications [Line Items]
Total TDRs	930	637
Performing [Member] | Commercial Mortgage [Member]
Financing Receivable Modifications [Line Items]
Total TDRs	146
Performing [Member] | Commercial and Industrial [Member]
Financing Receivable Modifications [Line Items]
Total TDRs	147
Performing [Member] | Residential Mortgage Loans [Member]
Financing Receivable Modifications [Line Items]
Total TDRs	637	637
Non-Performing [Member]
Financing Receivable Modifications [Line Items]
Total TDRs	55	34
Non-Performing [Member] | Commercial and Industrial [Member]
Financing Receivable Modifications [Line Items]
Total TDRs	$ 55
Non-Performing [Member] | Other Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Total TDRs		20
Non-Performing [Member] | Home Equity Lines of Credit [Member]
Financing Receivable Modifications [Line Items]
Total TDRs		$ 14

Transactions with Executive O67

Transactions with Executive Officers, Directors and Principal Shareholders - Schedule of Loans with Related Parties (Detail) - Executive Officers, Directors and Principal Shareholders and affiliated companies - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Balance, beginning of year	$ 5,466	$ 5,722
New loans	2,549	2,174
Loans of Retired Officers	(773)
Repayments	(1,686)	(2,430)
Balance at end of year	$ 5,556	$ 5,466

Transactions with Executive O68

Transactions with Executive Officers, Directors and Principal Shareholders - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Executive Officers, Directors and Principal Shareholders and affiliated companies
Related Party Transaction [Line Items]
Deposits of related parties	$ 9.5	$ 7.7

Premises and Equipment - Compon

Premises and Equipment - Components of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 4,151	$ 4,143
Accumulated depreciation	(2,544)	(2,388)
Premises and equipment, net	1,607	1,755
Buildings [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	1,143	1,143
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	1,424	1,422
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	799	818
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	20	24
Computer Equipment and Data Processing Software [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 765	$ 736

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Abstract]
Depreciation expense	$ 262	$ 309

Deposits - Components of Deposi

Deposits - Components of Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Demand, non-interest bearing	$ 65,634	$ 54,817
Demand, interest-bearing	29,918	57,168
Money market and savings accounts	145,355	113,655
Time, $100 and over	84,358	45,311
Time, other	197,885	196,737
Total deposits	$ 523,150	$ 467,688

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Line Items]
Brokered deposits	$ 120,200	$ 138,800
FDIC insurance limit	250	250
Time deposits in excess of FDIC Insurance limit	32,100	8,000
Demand Deposits [Member]
Deposits [Line Items]
Aggregate amount of overdrafts that were reclassified as loans	$ 54	$ 134

Deposits - Scheduled Maturities

Deposits - Scheduled Maturities of Time Deposits (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Time Deposits Rolling Year Maturity [Abstract]
2,018	$ 155,229
2,019	76,431
2,020	24,421
2,021	17,942
2,022	8,220
Total time deposits	$ 282,243

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Borrowing facility with correspondent bank	$ 10,000,000	$ 10,000,000
Restricted investments in FHLB stock held as collateral	1,300,000	3,100,000
Borrowing capacity with the FHLB	221,000,000	206,000,000
Advances outstanding	24,625,000	68,164,000
Securities pledged to secure borrowings	20,000	40,000
Long-term debt	9,000,000
FHLB Short-Term Borrowings [Member]
Debt Instrument [Line Items]
Short-term borrowings	$ 15,625,000	56,164,000
Maximum [Member] | FHLB Short-Term Borrowings [Member]
Debt Instrument [Line Items]
FHLB advances original maturity	1 year
Unsecured Line of Credit [Member]
Debt Instrument [Line Items]
Borrowing facility with correspondent bank	$ 2,000,000	2,000,000
Secured Line of Credit [Member]
Debt Instrument [Line Items]
Borrowing facility with correspondent bank	$ 8,000,000	8,000,000
FHLB Long-Term Borrowings [Member]
Debt Instrument [Line Items]
FHLB advances original maturity	1 year
Long-term debt	$ 9,000,000	12,000,000
Average balances outstanding	$ 10,900,000	$ 14,100,000
Average cost of borrowings	1.30%	1.12%

Borrowings - Schedule of Short-

Borrowings - Schedule of Short-term Borrowed Funds (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
2018, Balance	$ 3,000
2019, Balance	2,000
2020, Balance	4,000
Total Balance	$ 9,000
2018, Weighted Average Rate	1.31%
2019, Weighted Average Rate	1.64%
2020, Weighted Average Rate	1.75%
Weighted Average Rate	1.58%
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum month-end balance	$ 19
Average daily balance during the year	$ 3	$ 2
Weighted average rate during the year	1.52%	0.76%
FHLB Short-Term Borrowings [Member]
Short-term Debt [Line Items]
Balance at year end	$ 15,625	$ 56,164
Weighted average rate at year end	1.54%	0.74%
Maximum month-end balance	$ 70,400	$ 60,688
Average daily balance during the year	$ 26,446	$ 22,508
Weighted average rate during the year	1.15%	0.61%

Subordinated Debt - Additional

Subordinated Debt - Additional Information (Detail) - Subordinated Note [Member] | $ in Thousands	Nov. 13, 2015USD ($)Investor
Debt Instrument [Line Items]
Number of accredited investors | Investor	5
Net proceeds after issuance cost	$ 9,200
Issuance costs	318
Subordinated Debt Due November Thirty Twenty Twenty Five [Member]
Debt Instrument [Line Items]
Debt instrument, value	$ 9,500
Maturity date	Nov. 30, 2025
Debt instrument, interest rate	7.00%
Debt instrument, non-callable period	5 years
Subordinated Debt Due November Thirty Twenty Twenty Five [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, redemption pricing	100.50%
Subordinated Debt Due November Thirty Twenty Twenty Five [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, redemption pricing	101.50%

Lease Commitments - Future Mini

Lease Commitments - Future Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Minimum Lease Payments
2,018	$ 1,246
2,019	1,266
2,020	1,172
2,021	971
2,022	878
Thereafter	2,832
Minimum Lease Payments	$ 8,365

Lease Commitments - Additional

Lease Commitments - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
Lease expense	$ 1,090	$ 1,130

Severance and Employment Agre79

Severance and Employment Agreements - Additional Information (Detail) - $ / shares	Dec. 19, 2013	Dec. 31, 2017	Dec. 31, 2016
Severance And Employment Agreements [Line Items]
Employment Termination Period		1 year
Contractual term	10 years	3 years 18 days	2 years 11 months 23 days
Options, Granted, Weighted Average Exercise Price	$ 5.25	$ 7.92	$ 5.93
Options granted, Shares	355,000
Number of restricted stock issued during period	89,500
Restricted stock vesting period		4 years
President [Member]
Severance And Employment Agreements [Line Items]
Term of employment agreement		3 years
Post termination benefits		An amount equal to three (3) times the sum of (i) the highest salary paid to him in the year of termination or prior two calendar years and (ii) the highest bonus paid to him in one of the three calendar years prior to termination and (iii) an adjustment for benefits.
Restricted Stock [Member]
Severance And Employment Agreements [Line Items]
Number of restricted stock issued during period		52,700	36,250
Restricted stock vesting period	3 years
Minimum [Member]
Severance And Employment Agreements [Line Items]
Length of severance payments period		6 months
Minimum [Member] | President [Member]
Severance And Employment Agreements [Line Items]
Employment agreement, Non-renewal notice period		60 days
Maximum [Member]
Severance And Employment Agreements [Line Items]
Length of severance payments period		18 months

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Jan. 22, 2016	Dec. 31, 2017	Dec. 31, 2016	May 04, 2016	Dec. 31, 2015
Class Of Stock [Line Items]
Common stock, shares authorized		20,000,000	20,000,000	20,000,000	10,000,000
Common stock, par value		$ 1	$ 1	$ 1
Preferred stock, shares outstanding		3,404	3,404
Preferred stock, value outstanding		$ 3,400	$ 3,400
Preferred stock, dividend rate		9.00%	9.00%
Preferred Stock, redemption amount	$ 6,000		$ 6,000
Preferred Stock, redemption price per share	$ 1,016.75
Series A Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred Stock, redemption price per share	$ 1,000
Preferred stock, shares redeemed	4,579
Series B Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred Stock, redemption price per share	$ 1,000
Preferred stock, shares redeemed	229
Series C Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock, shares outstanding		3,404	3,404
Preferred stock, dividend rate		9.00%	9.00%
Preferred stock, shares redeemed	1,192
Preferred stock pro rata percentage shares redeemed	25.90%
Preferred stock, shares issued	4,596	3,404	3,404
Preferred stock, par value	$ 1,000	$ 100	$ 100

Stock Compensation Program - Ad

Stock Compensation Program - Additional Information (Detail) - USD ($)	Dec. 19, 2013	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Compensation Program, aggregate maximum number of share to grant		1,207,957
Vesting period of granted stock options		4 years
Description of options termination from the date of grant		Terminate ten years from the date of the grant
Weighted average remaining contractual life, outstanding stock options		5 years 5 months 15 days	5 years 10 months 2 days
Weighted average remaining contractual life, exercisable stock options	10 years	3 years 18 days	2 years 11 months 23 days
Options outstanding, intrinsic value		$ 2,500,000	$ 705,000
Options exercisable, intrinsic value		$ 586,000	150,000
Forfeiture rate percentage		10.00%
Unrecognized compensation cost		$ 146,000
Weighted average period for cost is expected to be recognized		1 year 8 months 19 days
Tax benefit recognized related to stock-based compensation		$ 0	$ 0
Stock options issued under Severance Plan	355,000
Unrecognized Compensation Cost for Shares Issued and Restricted under the Severance Plan		$ 576,000
Shares issued to various employees is included in options granted		7,500	37,500
Options, cancelled, Shares		40,000	32,500
Stock options outstanding		807,870	955,060	970,193
Unrecognized compensation cost amortized period		Jul. 31, 2021
Performance Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued to various employees is included in options granted				99,000
Options, cancelled, Shares		82,500		82,500
Stock options outstanding		16,500
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period of granted stock options	3 years
Unrecognized compensation cost related to restricted stock		$ 520,000
Restricted Stock [Member] | Employee [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period of granted stock options		3 years
Affinity Bancorp, Inc [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized for grant		382,957

Stock Compensation Program - Su

Stock Compensation Program - Summary of Stock Option Plan (Detail) - $ / shares	Dec. 19, 2013	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options, Beginning balance, Options to Purchase Common Shares		955,060	970,193
Options, Granted, Options to Purchase Common Shares		7,500	37,500
Options, Forfeited/cancelled, Options to Purchase Common Shares		(40,000)	(32,500)
Options, Exercised, Options to Purchase Common Shares			(2,000)
Options, expired, Options to Purchase Common Shares		(114,690)	(18,133)
Options, Ending balance, Options to Purchase Common Shares		807,870	955,060
Options, Exercisable, Options to Purchase Common Shares		239,870	354,560
Options, Beginning balance, Weighted Average Exercise Price		$ 6.35	$ 6.41
Options, Granted, Weighted Average Exercise Price	$ 5.25	7.92	5.93
Options, Forfeited/cancelled, Weighted Average Exercise Price		6.19	5.91
Options, Exercised, Weighted Average Exercise Price			5.73
Options, Expired, Weighted Average Exercise Price		10.08	9.65
Options, Ending balance, Weighted Average Exercise Price		5.84	6.35
Options, Exercisable, Weighted Average Exercise Price		$ 6.62	$ 7.74

Stock Compensation Program - 83

Stock Compensation Program - Summary of Stock Option Plan (Parenthetical) (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options outstanding	955,060	807,870	970,193
Options, Exercisable, Options to Purchase Common Shares	354,560	239,870
Options, Exercisable, Weighted Average Exercise Price	$ 7.74	$ 6.62
Options outstanding, exercise price	$ 6.35	$ 5.84	$ 6.41
Organizer Options [Member] | 2008 Acquisition of Prestige [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options outstanding	100,000
Options, Exercisable, Options to Purchase Common Shares	100,000
Options, Exercisable, Weighted Average Exercise Price	$ 10
Options outstanding, exercise price	$ 10
Options, expiration date	Oct. 18, 2017

Stock Compensation Program - We

Stock Compensation Program - Weighted Average Assumption of Fair Value Option Grant (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Dividend yield	0.00%	0.00%
Expected life	7 years	7 years
Expected volatility	23.00%	26.00%
Risk-free interest rate	2.04%	1.63%
Weighted average fair value	$ 2.34	$ 1.83

Stock Compensation Program - 85

Stock Compensation Program - Summary of Restricted Stock Award Activity (Detail) - shares	Dec. 19, 2013	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock award, granted, Shares	89,500
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock award, Beginning balance, Unvested shares		89,450	165,474
Restricted stock award, granted, Shares		52,700	36,250
Restricted stock award, forfeited/cancelled, Shares		(4,450)	(725)
Restricted stock award, Vested, Shares		(13,550)	(111,549)
Restricted stock award, Ending balance, Unvested shares		124,150	89,450

Federal Income Taxes - Schedule

Federal Income Taxes - Schedule of Components of Net Deferred Tax Asset (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Allowance for loan losses	$ 583,000	$ 701,000
Organization and start-up costs	35,000	75,000
Net operating loss carry forwards		833,000
Net operating loss carry forwards--acquired	231,000	670,000
Contribution carry forward		9,000
Non-qualified stock option expense	208,000	283,000
Other real estate owned deferred costs	18,000	215,000
Unrealized loss on investment securities	3,000	21,000
Alternative minimum tax carry forward		199,000
Property and equipment	35,000	35,000
Unfunded loan commitment reserve	7,000	12,000
Total Deferred Tax Assets	1,120,000	3,053,000
Deferred tax liabilities:
Acquisition accounting	66,000	135,000
Cash basis conversions	120,000	206,000
Discount accretion on investment securities	11,000	15,000
Total Deferred Tax Liabilities	197,000	356,000
Net Deferred Tax Asset	$ 923,000	$ 2,697,000

Federal Income Taxes - Addition

Federal Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments Owned Federal Income Tax Note [Line Items]
Operating loss carryforwards		$ 1,100,000
Statutory federal income tax rate		34.00%	34.00%
Net deferred tax asset included in provision for income tax expense		$ 571,000
Accrued interest and penalties		0	$ 0
Scenario Plan [Member]
Investments Owned Federal Income Tax Note [Line Items]
Statutory federal income tax rate	21.00%
Prestige Community Bank [Member]
Investments Owned Federal Income Tax Note [Line Items]
Operating loss carryforwards		$ 231,000
Net operating loss carryforward expiry period, Description		2,028
Affinity Bancorp, Inc [Member]
Investments Owned Federal Income Tax Note [Line Items]
Net operating loss carryforward expiry period, Description		2,032

Federal Income Taxes - Schedu88

Federal Income Taxes - Schedule of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Current tax expense:
Federal	$ 227	$ 94
State	19	46
Deferred Income tax expense:
Federal	1,755	988
Federal income tax expense	$ 2,001	$ 1,128

Federal Income Taxes - Schedu89

Federal Income Taxes - Schedule of Reconciliation of Statutory Federal Income Tax Expense to Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal income tax expense at statutory rate of 34%:	$ 1,516	$ 1,165
Increase (decrease) in taxes resulting from:
Tax exempt interest income, net	(159)	(109)
Tax exempt income on bank owned life insurance	(24)	(26)
Applicable state income taxes	13	30
Stock compensation adjustment for expired options	(3)	30
Tax Cut and Jobs Act adjustment to deferred tax asset	571
Other	87	38
Federal income tax expense	$ 2,001	$ 1,128

Federal Income Taxes - Schedu90

Federal Income Taxes - Schedule of Reconciliation of Statutory Federal Income Tax Expense to Income Tax Expense (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	34.00%	34.00%

Financial Instruments with Of91

Financial Instruments with Off-Balance Sheet Risk - Additional Information (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Federal Home Loan Bank of Pittsburgh [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Letters of credit	$ 0	$ 16,000,000
Financial Standby Letters of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Letters of credit	1,700,000	1,700,000
Lines of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Commitments issued under lines of credit	115,200,000	98,200,000
Performance Standby Letters of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Letters of credit	$ 2,300,000	$ 958,000

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Bank's Capital Amounts and Ratios (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Banking And Thrift [Abstract]
Total capital (to risk-weighted assets), Actual Amount	$ 59,886	$ 55,900
Tier 1 capital (to risk-weighted assets), Actual Amount	47,215	43,328
Tier 1 common equity capital (to risk-weighted assets), Actual Amount	47,215	43,328
Tier 1 capital (to total assets), Actual Amount	$ 47,215	$ 43,328
Total capital (to risk-weighted assets), Actual Ratio	12.15%	12.07%
Tier 1 capital (to risk-weighted assets), Actual Ratio	9.58%	9.35%
Tier 1 common equity capital (to risk-weighted assets), Actual Ratio	9.58%	9.35%
Tier 1 capital (to total assets), Actual Ratio	8.08%	7.87%
Total capital (to risk-weighted assets), Minimum Capital Requirement Amount	$ 39,434	$ 37,064
Tier 1 capital (to risk-weighted assets), Minimum Capital Requirement Amount	29,575	27,798
Tier 1 common equity capital (to risk-weighted assets), Minimum Capital Requirement Amount	22,182	20,848
Tier 1 capital (to total assets), Minimum Capital Requirement Amount	$ 23,384	$ 22,023
Total capital (to risk-weighted assets), Minimum Capital Requirement Ratio	8.00%	8.00%
Tier 1 capital (to risk-weighted assets), Minimum Capital Requirement Ratio	6.00%	6.00%
Tier 1 common equity capital (to risk-weighted assets), Minimum Capital Requirement Ratio	4.50%	4.50%
Tier 1 capital (to total assets), Minimum Capital Requirement Ratio	4.00%	4.00%
Total capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 49,292	$ 46,330
Tier 1 capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions Amount	39,434	37,064
Tier 1 common equity capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions Amount	32,040	30,114
Tier 1 capital (to total assets), To be Well Capitalized under Prompt Corrective Action Provisions Amount	$ 29,230	$ 27,528
Total capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier 1 capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions Ratio	8.00%	8.00%
Tier 1 common equity capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier 1 capital (to total assets), To be Well Capitalized under Prompt Corrective Action Provisions Ratio	5.00%	5.00%

Regulatory Matters - Additional

Regulatory Matters - Additional Information (Detail)	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 risk based capital required capital conservation buffer ratio			1.25%	0.625%
Tier 1 common equity capital ratio minimum requirement			5.75%	5.125%
Tier 1 capital ratio minimum requirement			7.25%	6.625%
Tier 1 total capital ratio minimum requirement			9.25%	8.625%
Scenario, Forecast [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 risk based capital required capital conservation buffer ratio		1.875%
Tier 1 common equity capital ratio	7.00%
Tier 1 capital ratio	8.50%
Tier 1 total capital ratio	10.50%

Fair Value Measurements and F94

Fair Value Measurements and Fair Values of Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Fair value measurements changes in methodologies description	During the years ended December 31, 2017 and 2016 there were no changes in methodologies for determining fair value measurements
Fair value assets transfers between fair value hierarchy levels from 1 to 2	$ 0	$ 0
Fair value assets transfers between fair value hierarchy levels from 2 to 1	0	0
Fair value liabilities transfers between fair value hierarchy levels from 1 to 2	0	0
Fair value liabilities transfers between fair value hierarchy levels from 2 to 1	0	0
Fair value assets transfers between fair value hierarchy levels into 3	0	0
Fair value assets transfers between fair value hierarchy levels out of 3	0	0
Fair value liabilities transfers between fair value hierarchy levels into 3	0	0
Fair value liabilities transfers between fair value hierarchy levels out of 3	0	0
Other real estate owned	550,000	1,486,000
Impaired loan balances	1,568,000	1,413,000
Total, Related Allowance	182,000	47,000
Impaired Loans Fair Value with Allowance Recorded [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Impaired loan balances	968,000	637,000
Total, Related Allowance	182,000	46,000
Impaired Loans Fair Value with no Related Allowance Recorded [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Impaired loan balances	529,000	862,000
Net of partial charge-offs	196,000	196,000
Portion at Fair Value Measurement [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Other real estate owned	69,000	1,200,000
Other Real Estate Owned [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Valuation allowance	$ 38,000	$ 520,000

Fair Value Measurements and F95

Fair Value Measurements and Fair Values of Financial Instruments - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	$ 52,373	$ 70,560
Obligations of U.S. Government Agencies and Corporations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	20,971	45,987
Obligations of States and Political Subdivisions [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	4,386	6,139
Federal Agency Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	25,289	13,720
Federal Agency Collateralized Mortgage Obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	109	189
Other Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	1,583	1,530
Money Market Mutual Fund [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	35	2,995
(Level 1) Quoted Prices in Active Markets for Identical Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	35	2,995
(Level 1) Quoted Prices in Active Markets for Identical Assets [Member] | Money Market Mutual Fund [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	35	2,995
(Level 2) Significant Other Observable Inputs [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	52,338	67,565
(Level 2) Significant Other Observable Inputs [Member] | Obligations of U.S. Government Agencies and Corporations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	20,971	45,987
(Level 2) Significant Other Observable Inputs [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	4,386	6,139
(Level 2) Significant Other Observable Inputs [Member] | Federal Agency Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	25,289	13,720
(Level 2) Significant Other Observable Inputs [Member] | Federal Agency Collateralized Mortgage Obligations [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	109	189
(Level 2) Significant Other Observable Inputs [Member] | Other Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a recurring basis	$ 1,583	$ 1,530

Fair Value Measurements and F96

Fair Value Measurements and Fair Values of Financial Instruments - Summary of Financial Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a nonrecurring basis	$ 1,188	$ 1,936
Impaired Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a nonrecurring basis	1,119	1,257
Other Real Estate Owned [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a nonrecurring basis	69	679
(Level 3) Significant Unobservable Inputs [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a nonrecurring basis	1,188	1,936
(Level 3) Significant Unobservable Inputs [Member] | Impaired Loans [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a nonrecurring basis	1,119	1,257
(Level 3) Significant Unobservable Inputs [Member] | Other Real Estate Owned [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets measured at fair value on a nonrecurring basis	$ 69	$ 679

Fair Value Measurements and F97

Fair Value Measurements and Fair Values of Financial Instruments - Quantitative Information about Level 3 Fair Value Measurements (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value Inputs Assets Quantitative Information [Line Items]
Asset at fair Value	$ 1,188	$ 1,936
(Level 3) Significant Unobservable Inputs [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Asset at fair Value	1,188	1,936
Impaired Loans [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Asset at fair Value	$ 1,119	$ 1,257
Impaired Loans [Member] | (Level 3) Significant Unobservable Inputs [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Estimated Ratings, maximum	10.00%	10.00%
Estimated Ratings Weighted Average, Liquidation expenses	8.47%	8.01%
Asset at fair Value	$ 1,119	$ 1,257
Unobservable Inputs	Liquidation expenses
Estimated Ratings, minimum	0.00%	0.00%
Impaired Loans [Member] | Appraisal of Real Estate Collateral [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Valuation Techniques	Appraisal of real estate collateral
Impaired Loans [Member] | Appraisal of Real Estate Collateral [Member] | (Level 3) Significant Unobservable Inputs [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Estimated Ratings, maximum	75.00%	25.00%
Estimated Ratings Weighted Average, Appraisal adjustments	12.19%	4.87%
Unobservable Inputs	Appraisal adjustments
Estimated Ratings, minimum	0.00%	0.00%
Impaired Loans [Member] | Valuation of Business Assets Used as Collateral [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Valuation Techniques	2016: Valuation of business assets used as collateral
Impaired Loans [Member] | Valuation of Business Assets Used as Collateral [Member] | (Level 3) Significant Unobservable Inputs [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Unobservable Inputs	2016: Valuation adjustments
Estimated Ratings, maximum		80.00%
Estimated Ratings Weighted Average, Valuation adjustments		75.32%
Estimated Ratings, minimum		0.00%
Other Real Estate Owned [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Asset at fair Value	$ 69	$ 679
Other Real Estate Owned [Member] | (Level 3) Significant Unobservable Inputs [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Estimated Ratings, maximum	8.00%	7.00%
Estimated Ratings Weighted Average, Liquidation expenses	8.00%	6.94%
Asset at fair Value	$ 69	$ 679
Unobservable Inputs	Liquidation expenses
Estimated Ratings, minimum		5.00%
Other Real Estate Owned [Member] | Appraisal of Collateral [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Valuation Techniques	Appraisal of collateral
Other Real Estate Owned [Member] | Appraisal of Collateral [Member] | (Level 3) Significant Unobservable Inputs [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Estimated Ratings, maximum	0.00%	0.00%
Estimated Ratings Weighted Average, Appraisal adjustments	0.00%	0.00%
Unobservable Inputs	Appraisal adjustments

Fair Value Measurements and F98

Fair Value Measurements and Fair Values of Financial Instruments - Summary of Estimated Fair Values of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Fair Value	$ 52,373	$ 70,560
Held to Maturity, Fair Value	19,665	19,584
Carrying Amount [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents	8,257	4,761
Fair Value	52,373	70,560
Held to Maturity, Fair Value	18,665	19,043
Loans receivable, net	515,522	484,913
Restricted stock	1,416	3,257
Accrued interest receivable	2,007	1,817
Deposits	523,150	467,688
Subordinated debt	9,231	9,207
Accrued interest payable	844	510
Carrying Amount [Member] | Federal Home Loan Bank of Pittsburgh advances [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Federal Home Loan Bank of Pittsburgh advances	24,625	68,164
Portion at Fair Value Measurement [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents	8,257	4,761
Fair Value	52,373	70,560
Held to Maturity, Fair Value	19,665	19,584
Loans receivable, net	519,721	490,890
Restricted stock	1,416	3,257
Accrued interest receivable	2,007	1,817
Deposits	521,922	467,616
Subordinated debt	9,539	9,273
Accrued interest payable	844	510
Portion at Fair Value Measurement [Member] | (Level 1) Quoted Prices in Active Markets for Identical Assets [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash and cash equivalents	8,257	4,761
Fair Value	35	2,995
Portion at Fair Value Measurement [Member] | (Level 2) Significant Other Observable Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Fair Value	52,338	67,565
Held to Maturity, Fair Value	19,665	19,584
Restricted stock	1,416	3,257
Accrued interest receivable	2,007	1,817
Deposits	521,922	467,616
Subordinated debt	9,539	9,273
Accrued interest payable	844	510
Portion at Fair Value Measurement [Member] | (Level 3) Significant Unobservable Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Loans receivable, net	519,721	490,890
Portion at Fair Value Measurement [Member] | Federal Home Loan Bank of Pittsburgh advances [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Federal Home Loan Bank of Pittsburgh advances	24,546	68,157
Portion at Fair Value Measurement [Member] | Federal Home Loan Bank of Pittsburgh advances [Member] | (Level 2) Significant Other Observable Inputs [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Federal Home Loan Bank of Pittsburgh advances	$ 24,546	$ 68,157

Parent Company Only Financial99

Parent Company Only Financial Information - Schedule of Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 8,257	$ 4,761	$ 5,909
Deferred taxes	923	2,697
Other assets	2,402	1,290
Total Assets	609,942	597,795
Liabilities and Shareholders’ Equity
Other liabilities	1,596	4,180
Shareholders' equity	50,496	48,046	52,091
Total Liabilities and Shareholders’ Equity	609,942	597,795
First Priority Financial Corp. [Member]
Assets
Cash and cash equivalents	27	243	$ 6,411
Investment in subsidiary	50,118	47,454
Deferred taxes	238	349
Receivable due from bank subsidiary	119
Other assets	18	32
Total Assets	50,520	48,078
Liabilities and Shareholders’ Equity
Other liabilities	24	32
Shareholders' equity	50,496	48,046
Total Liabilities and Shareholders’ Equity	$ 50,520	$ 48,078

Parent Company Only Financia100

Parent Company Only Financial Information - Schedule of Condensed Income Statements (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Condensed Income Statements, Captions [Line Items]
Interest from subsidiary	$ 18,204	$ 16,716
Non-interest expenses	14,401	14,123
Income Tax Expense	2,001	1,128
Net Income	2,458	2,300
First Priority Financial Corp. [Member]
Condensed Income Statements, Captions [Line Items]
Dividend income from subsidiary, net of dividends paid by Bank	306	407
Interest from subsidiary	1	2
Total income	307	409
Non-interest expenses	103	161
Income before taxes and equity in undistributed net income of subsidiary	204	248
Income Tax Expense	112	(54)
Income before equity in undistributed net income of subsidiary	92	302
Equity in undistributed net income of subsidiary	2,366	1,998
Net Income	$ 2,458	$ 2,300

Parent Company Only Financia101

Parent Company Only Financial Information - Schedule of Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Condensed Statement Of Income Captions [Line Items]
Net income	$ 2,458	$ 2,300
Securities available for sale:
Change in unrealized gain on securities available for sale	485	405
Reclassification adjustment for realized gains included in net income	(416)	(795)
Tax effect	(24)	133
Net gains (losses) arising during the period	45	(257)
Net unrealized holding losses on securities transferred between available for sale and held to maturity:
Amortization of net unrealized holding losses to income during the period	(15)	(31)
Tax effect	6	10
Net unrealized holding losses on securities transferred during the period	(9)	(21)
Total other comprehensive income (loss)	36	(278)
Total comprehensive income	2,494	2,022
First Priority Financial Corp. [Member]
Condensed Statement Of Income Captions [Line Items]
Net income	2,458	2,300
Securities available for sale:
Change in unrealized gain on securities available for sale	484	405
Reclassification adjustment for realized gains included in net income	(416)	(795)
Tax effect	(23)	133
Net gains (losses) arising during the period	45	(257)
Net unrealized holding losses on securities transferred between available for sale and held to maturity:
Amortization of net unrealized holding losses to income during the period	(14)	(31)
Tax effect	5	10
Net unrealized holding losses on securities transferred during the period	(9)	(21)
Total other comprehensive income (loss)	36	(278)
Total comprehensive income	$ 2,494	$ 2,022

Parent Company Only Financia102

Parent Company Only Financial Information - Schedule of Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	Jan. 22, 2016	Dec. 31, 2017	Dec. 31, 2016
Operating activities:
Net income		$ 2,458	$ 2,300
Adjustments to reconcile net income to net cash provided by operating activities:
Stock based compensation distribution from Bank		262	328
Net increase in other assets		(272)	(20)
Net (decrease) increase in other liabilities		115	2,813
Financing activities:
Redemption of preferred stock	$ (6,000)		(6,000)
Proceeds from the exercise of common stock options			12
Cash dividends paid on preferred stock		(306)	(427)
Cash and Cash Equivalents—Beginning		4,761	5,909
Cash and Cash Equivalents—Ending		8,257	4,761
First Priority Financial Corp. [Member]
Operating activities:
Net income		2,458	2,300
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiary, net of dividends from Bank		(2,628)	(2,326)
Stock based compensation distribution from Bank		262	328
Deferred income tax expense (benefit)		111	(54)
Net increase in other assets		(105)	(4)
Net (decrease) increase in other liabilities		(8)	3
Net cash provided by operating activities		90	247
Financing activities:
Redemption of preferred stock			(6,000)
Proceeds from the exercise of common stock options			12
Cash dividends paid on preferred stock		(306)	(427)
Net cash used in financing activities		(306)	(6,415)
Net decrease in cash		(216)	(6,168)
Cash and Cash Equivalents—Beginning		243	6,411
Cash and Cash Equivalents—Ending		$ 27	$ 243

Subsequent Event - Additional I

Subsequent Event - Additional Information (Details) - Mid Penn Bancorp, Inc. [Member] $ in Millions	Jan. 16, 2018	Jan. 08, 2018	Dec. 31, 2017USD ($)LocationCountryshares
Subsequent Event [Line Items]
Business acquisition, proforma assets			$ 2,200
Business acquisition, proforma loans			1,600
Business acquisition, proforma deposits			1,800
Business acquisition, proforma equity capital			$ 170
Shares of acquirer ratio of common stock | shares			0.3481
Number of retail locations | Location			37
Number of serving counties | Country			12
Subsequent Event [Member]
Subsequent Event [Line Items]
Plan of merger agreement, date	Jan. 16, 2018
Scottdale Bank & Trust [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Acquisition date		Jan. 8, 2018