Prime Meridian Holding (PMHG) 10-Q 14 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 07, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	PMHG
Entity Registrant Name	Prime Meridian Holding Co
Entity Central Index Key	1,586,454
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		3,123,533

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 7,580	$ 6,971
Federal funds sold	9,313	20,148
Interest-bearing deposits	5,282	5,278
Total cash and cash equivalents	22,175	32,397
Securities available for sale	48,014	49,809
Loans held for sale	6,394	5,880
Loans, net of allowance for loan losses of $3,385 and $3,136	272,611	250,259
Federal Home Loan Bank stock	355	316
Premises and equipment, net	4,936	4,872
Accrued interest receivable	985	978
Bank-owned life insurance	1,768	1,757
Other assets	1,060	912
Total assets	358,298	347,180
Liabilities:
Noninterest-bearing demand deposits	73,736	76,216
Savings, NOW and money-market deposits	212,153	200,027
Time deposits	23,393	22,054
Total deposits	309,282	298,297
Official checks	1,368	1,146
Other liabilities	708	764
Total liabilities	311,358	300,207
Stockholders' equity:
Preferred stock, undesignated; 1,000,000 shares authorized, none issued or outstanding
Common stock, $.01 par value; 9,000,000 shares authorized, 3,122,769 and 3,118,977 issued and outstanding	31	31
Additional paid-in capital	38,023	37,953
Retained earnings	9,727	9,285
Accumulated other comprehensive loss	(841)	(296)
Total stockholders' equity	46,940	46,973
Total liabilities and stockholders' equity	$ 358,298	$ 347,180

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Loans receivable, allowance for loan losses	$ 3,385	$ 3,136
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	9,000,000	9,000,000
Common stock, shares issued	3,122,769	3,118,977
Common stock, shares outstanding	3,122,769	3,118,977

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest income:
Loans	$ 3,274	$ 2,635
Securities	288	209
Other	74	69
Total interest income	3,636	2,913
Interest expense-
Deposits	397	247
Net interest income	3,239	2,666
Provision for loan losses	254	35
Net interest income after provision for loan losses	2,985	2,631
Noninterest income:
Service charges and fees on deposit accounts	87	80
Mortgage banking revenue	317	251
Income from bank-owned life insurance	11	12
Loss on sale of securities available for sale		(1)
Other income	102	81
Total noninterest income	517	423
Noninterest expense:
Salaries and employee benefits	1,435	1,247
Occupancy and equipment	235	247
Professional fees	84	63
Marketing	207	154
FDIC/State assessment	36	46
Software maintenance, amortization and other	148	129
Other	359	323
Total noninterest expense	2,504	2,209
Earnings before income taxes	998	845
Income taxes	244	309
Net earnings	$ 754	$ 536
Earnings per common share:
Basic	$ 0.24	$ 0.27
Diluted	0.24	0.27
Cash dividends per common share	$ 0.10	$ 0.07

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 754	$ 536
Change in unrealized (loss) gain on securities:
Unrealized (loss) gain arising during the period	(730)	75
Reclassification adjustment for realized loss		1
Net change in unrealized (loss) gain	(730)	76
Deferred income tax benefit (expense) on above change	185	(28)
Total other comprehensive (loss) income	(545)	48
Comprehensive income	$ 209	$ 584

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance, Value at Dec. 31, 2016	$ 27,082	$ 20	$ 20,732	$ 6,563	$ (233)
Beginning Balance, Shares at Dec. 31, 2016		2,004,707
Net earnings (unaudited)	536			536
Dividends paid (unaudited)	(140)			(140)
Net change in unrealized gain/loss on securities available for sale, net of income taxes (unaudited)	48				48
Stock options exercised (unaudited), Value	2		2
Stock options exercised (unaudited), Shares		200
Common stock issued as compensation to directors (unaudited), Value	19		19
Common stock issued as compensation to directors (unaudited), Shares		1,273
Stock-based compensation (unaudited)	15		15
Ending Balance (unaudited), Value at Mar. 31, 2017	27,562	$ 20	20,768	6,959	(185)
Ending Balance (unaudited), Shares at Mar. 31, 2017		2,006,180
Beginning Balance, Value at Dec. 31, 2017	$ 46,973	$ 31	37,953	9,285	(296)
Beginning Balance, Shares at Dec. 31, 2017	3,118,977	3,118,977
Net earnings (unaudited)	$ 754			754
Dividends paid (unaudited)	(312)			(312)
Net change in unrealized gain/loss on securities available for sale, net of income taxes (unaudited)	(545)				(545)
Stock options exercised (unaudited), Value	30		30
Stock options exercised (unaudited), Shares		3,000
Common stock issued as compensation to directors (unaudited), Value	17		17
Common stock issued as compensation to directors (unaudited), Shares		792
Stock-based compensation (unaudited)	23		23
Ending Balance (unaudited), Value at Mar. 31, 2018	$ 46,940	$ 31	$ 38,023	$ 9,727	$ (841)
Ending Balance (unaudited), Shares at Mar. 31, 2018	3,122,769	3,122,769

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net earnings	$ 754	$ 536
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	132	137
Provision for loan losses	254	35
Net amortization of deferred loan fees	39	(30)
Loss on sale of securities available for sale		1
Amortization of premiums and discounts on securities available for sale	106	86
Gain on sale of loans held for sale	(297)	(244)
Proceeds from the sale of loans held for sale	18,879	15,217
Loans originated as held for sale	(19,096)	(14,377)
Stock issued as compensation	17	19
Stock-based compensation expense	23	15
Income from bank-owned life insurance	(11)	(12)
Net (increase) decrease in accrued interest receivable	(7)	16
Net decrease (increase) in other assets	37	(144)
Net increase in other liabilities and official checks	166	206
Net cash provided by operating activities	996	1,461
Cash flows from investing activities:
Loan originations, net of principal repayments	(22,645)	(2,979)
Purchase of securities available for sale	(1,003)	(11,537)
Principal repayments of securities available for sale	1,944	915
Proceeds from sale of securities available for sale		750
Maturities and calls of securities available for sale	18	14
Purchase of Federal Home Loan Bank stock	(39)	(54)
Purchase of premises and equipment	(196)	(299)
Net cash used in investing activities	(21,921)	(13,190)
Cash flows from financing activities:
Net increase in deposits	10,985	10,902
Proceeds from stock options exercised	30	2
Common stock dividends paid	(312)	(140)
Net cash provided by financing activities	10,703	10,764
Net decrease in cash and cash equivalents	(10,222)	(965)
Cash and cash equivalents at beginning of period	32,397	36,165
Cash and cash equivalents at end of period	22,175	35,200
Supplemental disclosure of cash flow information Cash paid during the period:
Interest	395	247
Income taxes	0	0
Noncash transaction-
Accumulated other comprehensive loss, net change in unrealized (loss) gain on securities available for sale, net of taxes	$ (545)	$ 48

General

General	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
General	(1) General Prime Meridian Holding Company (“PMHG”) owns 100% of the outstanding common stock of Prime Meridian Bank (the “Bank”) (collectively the “Company”). PMHG’s primary activity is the operation of the Bank. The Bank is a Florida state-chartered commercial bank, and the deposit accounts of the Bank are insured up to the applicable limits by the Federal Deposit Insurance Corporation (“FDIC”). The Bank offers a variety of community banking services to individual and corporate clients through its three banking offices located in Tallahassee and Crawfordville, Florida and its online banking platform. The accounting and financial reporting policies the Company follows conform, in all material respects, to accounting principles generally accepted in the United States (“GAAP”) and to general practices within the banking industry. The condensed consolidated financial statements in the Quarterly Report on Form 10-Q 10-Q 10-K Comprehensive Income. available-for-sale Stock-Based Compensation. Mortgage Banking Revenue. Recent Accounting Standards Update. No. 2016-01, Financial Instruments-Overall (Subtopic 825-10): available-for-sale In February 2016, the FASB issued ASU No. 2016-2, Leases (Topic 842) In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326) available-for-sale Recent Accounting Standards Update, Continued. The new guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is in the process of determining the effect of the ASU on its consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-01, Business In March 2017, the FASB issued ASU No. 2017-08, In February 2018, the FASB issued ASU No. 2018-02), Income Statement Reporting Comprehensive Income (Topic 220)

Securities Available for Sale

Securities Available for Sale	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Securities Available for Sale	(2) Securities Available for Sale Securities are classified according to management’s intent. The carrying amount of securities and fair values are as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) At March 31, 2018 U.S. Government agency securities $ 1,076 $ — $ (22 ) $ 1,054 Municipal securities 12,268 55 (242 ) 12,081 Mortgage-backed securities 35,796 20 (937 ) 34,879 Total $ 49,140 $ 75 $ (1,201 ) $ 48,014 At December 31, 2017 U.S. Government agency securities $ 1,251 $ 6 $ (8 ) $ 1,249 Municipal securities 12,340 128 (95 ) 12,373 Mortgage-backed securities 36,614 23 (450 ) 36,187 Total $ 50,205 $ 157 $ (553 ) $ 49,809 The following table summarizes the sale of securities available for sale. Three Months Ended March 31, (in thousands) 2018 2017 Proceeds from sale of securities $ — $ 750 Gross gains — — Gross losses — (1 ) Net loss on sale of securities $ — $ (1 ) Securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, are as follows: Less Than Twelve Months Over Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (in thousands) At March 31, 2018 Securities Available for Sale U.S. Government agency securities $ (22 ) $ 1,054 $ — $ — Municipal securities (187 ) 6,222 (55 ) 1,202 Mortgage-backed securities (717 ) 28,884 (220 ) 5,290 Total $ (926 ) $ 36,160 $ (275 ) $ 6,492 At December 31, 2017 Securities Available for Sale U.S. Government agency securities $ (8 ) $ 694 $ — $ — Municipal securities (36 ) 1,831 (59 ) 1,203 Mortgage-backed securities (308 ) 29,742 (142 ) 5,667 Total $ (352 ) $ 32,267 $ (201 ) $ 6,870 The unrealized losses at March 31, 2018 and December 31, 2017 on forty-one Fair Value Measurements Using Fair Value Quoted Prices In Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (in thousands) At March 31, 2018 U.S. Government agency securities $ 1,054 $ — $ 1,054 $ — Municipal securities 12,081 — 12,081 — Mortgage-backed securities 34,879 — 34,879 — Total $ 48,014 $ — $ 48,014 $ — At December 31, 2017 U.S. Government agency securities $ 1,249 $ — $ 1,249 $ — Municipal securities 12,373 — 12,373 — Mortgage-backed securities 36,187 — 36,187 — Total $ 49,809 $ — $ 49,809 $ — During the three months ended March 31, 2018 and 2017, no securities were transferred in or out of Levels 1, 2 or 3. The scheduled maturities of securities are as follows: At March 31, 2018 (in thousands) Amortized Cost Fair Value Due in less than one year $ 507 $ 508 Due in one to five years 2,475 2,447 Due in five to ten year 7,620 7,621 Due after ten years 2,742 2,559 Mortgage-backed securities 35,796 34,879 Total $ 49,140 $ 48,014

Loans

Loans	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans	(3) Loans The composition of the Company’s loan portfolio, excluding loans held for sale, was the following for the periods presented below: (in thousands) At March 31, 2018 At December 31, 2017 Real estate mortgage loans: Commercial $ 87,388 $ 79,565 Residential and home equity 104,835 94,824 Construction 30,210 26,813 Total real estate mortgage loans 222,433 201,202 Commercial loans 46,022 44,027 Consumer and other loans 7,156 7,742 Total loans 275,611 252,971 Add (deduct): Net deferred loan costs 385 424 Allowance for loan losses (3,385 ) (3,136 ) Loans, net $ 272,611 $ 250,259 An analysis of the change in allowance for loan losses follows: Real Estate Mortgage Loans (in thousands) Commercial Residential and Home Equity Construction Commercial Loans Consumer and Other Loans Total Three-Month Period Ended March 31, 2018 Beginning balance $ 894 $ 1,097 $ 331 $ 724 $ 90 $ 3,136 Provision (credit) for loan losses 83 111 41 20 (1 ) 254 Net (charge-offs) recoveries — — — 1 (6 ) (5 ) Ending balance $ 977 $ 1,208 $ 372 $ 745 $ 83 $ 3,385 Three-Month Period Ended March 31, 2017 Beginning balance $ 775 $ 1,074 $ 258 $ 714 $ 55 $ 2,876 Provision (credit) for loan losses (8 ) 12 35 (10 ) 6 35 Net (charge-offs) recoveries — — — — (3 ) (3 ) Ending balance $ 767 $ 1,086 $ 293 $ 704 $ 58 $ 2,908 At March 31, 2018 Individually evaluated for impairment: Recorded investment $ 611 $ 243 $ — $ 126 $ — $ 980 Balance in allowance for loan losses $ — $ — $ — $ 126 $ — $ 126 Collectively evaluated for impairment: Recorded investment $ 86,777 $ 104,592 $ 30,210 $ 45,896 $ 7,156 $ 274,631 Balance in allowance for loan losses $ 977 $ 1,208 $ 372 $ 619 $ 83 $ 3,259 At December 31, 2017 Individually evaluated for impairment: Recorded investment $ — $ — $ — $ 134 $ — $ 134 Balance in allowance for loan losses $ — $ — $ — $ 134 $ — $ 134 Collectively evaluated for impairment: Recorded investment $ 79,565 $ 94,824 $ 26,813 $ 43,893 $ 7,742 $ 252,837 Balance in allowance for loan losses $ 894 $ 1,097 $ 331 $ 590 $ 90 $ 3,002 The Company has divided the loan portfolio into three portfolio segments and five portfolio classes, each with different risk characteristics and methodologies for assessing risk. All loans are underwritten based upon standards set forth in the policies approved by the Company’s Board of Directors. The Company identifies the portfolio segments and classes as follows: Real Estate Mortgage Loans. Commercial. mixed-use Residential and Home Equity. one-to-four 1-year, 3-year, 7-year 15-year 30-year Construction. Commercial Loans. Small-to-medium Other factors of risk could include changes in the borrower’s management and fluctuations in collateral value. Additionally, there may be refinancing risk if a commercial loan includes a balloon payment which must be refinanced or paid off at loan maturity. In reference to our risk management process, our commercial loan portfolio presents a higher risk profile than our consumer real estate and consumer loan portfolios. Therefore, we require that all loans to businesses must have a clearly stated and reasonable payment plan to allow for timely retirement of debt, unless secured by liquid collateral or as otherwise justified. Consumer and Other Loans. The following summarizes the loan credit quality: Real Estate Mortgage Loans (in thousands) Commercial Residential and Home Construction Commercial Consumer and Other Total At March 31, 2018 Grade: Pass $ 82,453 $ 102,130 $ 30,051 $ 44,768 $ 7,129 $ 266,531 Special mention 4,324 2,298 — 704 27 7,353 Substandard 611 407 159 550 — 1,727 Doubtful — — — — — — Loss — — — — — — Total $ 87,388 $ 104,835 $ 30,210 $ 46,022 $ 7,156 $ 275,611 At December 31, 2017 Grade: Pass $ 74,560 $ 92,282 $ 26,356 $ 42,874 $ 7,715 $ 243,787 Special mention 4,382 2,122 298 591 27 7,420 Substandard 623 420 159 562 — 1,764 Doubtful — — — — — — Loss — — — — — — Total $ 79,565 $ 94,824 $ 26,813 $ 44,027 $ 7,742 $ 252,971 The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans as to credit risk. Loans classified as substandard or special mention are reviewed quarterly by the Company for further deterioration or improvement to determine if they are appropriately classified and whether there is any impairment. All loans are graded upon initial issuance. Furthermore, construction loans, nonowner-occupied commercial real estate loans, and commercial loan relationships in excess of $500,000 are reviewed at least annually. The Company determines the appropriate loan grade during the renewal process and reevaluates the loan grade in situations when a loan becomes past due. Loans excluded from the review process above are generally classified as pass credits until: (a) they become past due; (b) management becomes aware of deterioration in the credit worthiness of the borrower; or (c) the client contacts the Company for a modification. In these circumstances, the loan is specifically evaluated for potential classification as to special mention, substandard or even charged-off. Pass Special Mention Substandard Doubtful Loss At March 31, 2018, there were three nonaccrual loans, totaling $369,000. Age analysis of past due loans is as follows: Accruing Loans (in thousands) 30-59 Days 60-89 Days Greater Than 90 Days Past Due Total Past Current Nonaccrual Total Loans At March 31, 2018: Real estate mortgage loans: Commercial $ — $ — $ — $ — $ 87,388 $ — $ 87,388 Residential and home equity — — — — 104,592 243 104,835 Construction — — — — 30,210 — 30,210 Commercial loans — — — — 45,896 126 46,022 Consumer and other loans — — — — 7,156 — 7,156 Total $ — $ — $ — $ — $ 275,242 $ 369 $ 275,611 At December 31, 2017: Real estate mortgage loans: Commercial $ — $ 623 $ — $ 623 $ 78,942 $ — $ 79,565 Residential and home equity — 255 — 255 94,569 — 94,824 Construction — — — — 26,813 — 26,813 Commercial loans — — — — 43,893 134 44,027 Consumer and other loans — — — — 7,742 — 7,742 Total $ — $ 878 $ — $ 878 $ 251,959 $ 134 $ 252,971 The following summarizes the amount of impaired loans: With No Related With an Allowance Recorded Total (in thousands) Recorded Unpaid Contractual Principal Recorded Unpaid Contractual Principal Related Recorded Unpaid Contractual Principal Related At March 31, 2018: Real estate mortgage loans: Commercial $ 611 $ 611 $ — $ — $ — $ 611 $ 611 $ — Residential & home equity 243 243 — — — 243 243 — Commercial loans — — 126 126 126 126 126 126 Total $ 854 $ 854 $ 126 $ 126 $ 126 $ 980 $ 980 $ 126 At December 31, 2017: Commercial loans $ — $ — $ 134 $ 134 $ 134 $ 134 $ 134 $ 134 Total $ — $ — $ 134 $ 134 $ 134 $ 134 $ 134 $ 134 The average net investment in impaired loans and interest income recognized and received on impaired loans are as follows: Three Months Ended March 31, 2018 2017 (in thousands) Average Recorded Interest Income Interest Income Average Recorded Interest Income Interest Income Real estate mortgage loans: Commercial $ 41 $ — $ — $ — $ — $ — Residential and home equity 173 — — 650 — — Commercial loans 146 — 2 73 — 1 Construction — — — 74 — — Total $ 360 $ — $ 2 $ 797 $ — $ 1 There were no collateral dependent loans measured at fair value on a nonrecurring basis at March 31, 2018 or 2017. The restructuring of a loan constitutes a troubled debt restructuring (“TDR”) if the creditor grants a concession to the debtor that it would not otherwise consider in the normal course of business. A concession may include an extension of repayment terms which would not normally be granted, a reduction in interest rate or the forgiveness of principal and/or accrued interest. All TDRs are evaluated individually for impairment on a quarterly basis as part of the allowance for loan losses calculation. The Company entered into one new TDR during the quarter ended March 31, 2018 and no new TDRs during the quarter ended March 31, 2017 as detailed in the following table. Three Months Ended March 31, 2018 2017 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Current Modification Outstanding Recorded Investment Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Current Modification Outstanding Recorded Investment (in thousands) Troubled Debt Restructurings – Residential and home equity: Modified principal 1 $ 619 $ 611 $ 611 — $ — $ — $ — Total 1 $ 619 $ 611 $ 611 — $ — $ — $ — At March 31, 2018, the Company had $663,000 in loans identified as TDRs. The TDR entered into during the quarter ended March 31, 2018 did not subsequently default during the period.

Regulatory Capital

Regulatory Capital	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Regulatory Capital	(4) Regulatory Capital, Continued Effective January 1, 2015, the Bank, became subject to the new Basel III capital level threshold requirements under the Prompt Corrective Action regulations with full compliance with all of the final rule’s requirements phased in over a multi-year schedule. These new regulations were designed to ensure that banks maintain strong capital positions even in the event of severe economic downturns or unforeseen losses. Changes that could affect the Bank going forward include additional constraints on the inclusion of deferred tax assets in capital and increased risk weightings for nonperforming loans and acquisition/development loans in regulatory capital. Beginning January 1, 2016, the Bank became subject to the capital conservation buffer rules which place limitations on distributions, including dividend payments, and certain discretionary bonus payments to executive officers. In order to avoid these limitations, a bank must hold a capital conservation buffer above its minimum risk-based capital requirements. As of March 31, 2018, the Bank’s capital conservation buffer exceeds the minimum requirement designated for March 31, 2018 of 1.875%. The required buffer of 2.5% will be effective January 1, 2019. Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and percentages (set forth in the table below) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital (as defined) to average assets (as defined). Management believes, as of March 31, 2018 that the Bank meets all capital adequacy requirements to which it is subject. As of March 31, 2018, the Bank is well capitalized under the regulatory framework for prompt corrective action. To be categorized as adequately capitalized, the Bank must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage percentages as set forth in the table. There are no conditions or events since that notification that management believes have changed the Bank’s category. The Bank’s actual capital amounts and percentages are also presented in the following table. Actual For Capital Adequacy For Well Capitalized (dollars in thousands) Amount Percentage Amount Percentage Amount Percentage As of March 31, 2018 Tier 1 Leverage Capital $ 34,038 9.69 % $ 14,050 4.00 % $ 17,562 5.00 % Common Equity Tier 1 Risk-based Capital 34,038 12.38 12,373 4.50 17,872 6.50 Tier 1 Risk-based Capital 34,038 12.38 16,497 6.00 21,997 8.00 Total Risk-based Capital 37,423 13.61 21,997 8.00 27,496 10.00 As of December 31, 2017 Tier 1 Leverage Capital 33,146 9.48 13,983 4.00 17,479 5.00 Common Equity Tier 1 Risk-based Capital 33,146 12.80 11,654 4.50 16,834 6.50 Tier 1 Risk-based Capital 33,146 12.80 15,539 6.00 20,718 8.00 Total Risk-based Capital 36,282 14.01 20,718 8.00 25,898 10.00

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	(5) Earnings Per Share Earnings per share, (“EPS”) have been computed on the basis of the weighted-average number of shares of common stock outstanding. For the three months ended March 31, 2018 and 2017, outstanding stock options are considered dilutive securities for purposes of calculating diluted EPS which was computed using the treasury stock method. 2018 2017 (dollars in thousands, except per share amounts) Earnings Weighted- Average Shares Per Share Amount Earnings Weighted- Average Shares Per Share Amount Three Months Ending March 31: Basic EPS: Net earnings $ 754 3,120,613 $ 0.24 $ 536 2,005,868 $ 0.27 Effect of dilutive securities-incremental shares from assumed conversion of options 2,892 3,288 Diluted EPS: Net earnings $ 754 3,123,505 $ 0.24 $ 536 2,009,156 $ 0.27

Stock Option Plans

Stock Option Plans	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Option Plans	(6) Stock Option Plans The 2015 Stock Incentive Compensation Plan (the “2015 Plan”) was approved by the Shareholders at the Company’s annual meeting of shareholders on May 20, 2015 and permits the Company to grant the Company’s key employees and directors stock options, stock appreciation rights, performance shares, and phantom stock. Under the 2015 Plan, the number of shares which may be issued is 500,000, but in no instance more than 15% of the issued and outstanding shares of the Company’s common stock. As of March 31, 2018, 27,207 stock options have been granted under the 2015 Plan. At March 31, 2018, 441,208 options are available for grant. Number of Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at December 31, 2016 — $ — Options granted 11,540 17.03 Outstanding at March 31, 2017 11,540 $ 17.03 Outstanding at December 31, 2017 11,540 $ 17.03 Options granted 15,667 17.21 Outstanding at March 31, 2018 27,207 $ 17.13 4.46 years $ 137,000 Exercisable at March 31, 2018 27,207 $ 17.13 4.46 years $ 137,000 The fair value of shares vested and recognized as compensation expense was $23,000 and $15,000 for the three months ended March 31, 2018 and 2017, respectively. At March 31, 2018 and 2017, there was no unrecognized compensation expense related to nonvested share-based compensation arrangements granted under the 2015 Plan. The fair value of each option granted during the three months ended March 31, 2018 and 2017 was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions: Period Ended March 31, 2018 2017 Weighted average risk-free interest rate 1.47 % 1.48 % Expected dividend yield 0.41 % — % Expected stock volatility 11.90 % 8.54 % Expected life in years 2.50 3.00 Per share fair value of options issued during period $ 1.49 $ 1.26 The Company used the guidance in Staff Accounting Bulletin No. 107 to determine the estimated life of options issued. Expected volatility is based on volatility of similar companies’ common stock. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The dividend yield is based on the Company’s history and expectation of dividend payouts. As of May 20, 2015, no further grants will be made under the 2007 Stock Option Plan (the “2007 Plan”). Unexercised stock options that were granted under the 2007 Plan will remain outstanding and will expire under the terms of the individual stock grant. A summary of the activity in the Company’s 2007 Stock Option Plan is as follows: Number of Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at December 31, 2016 42,200 $ 10.16 Options exercised (200 ) 10.00 Options forfeited (200 ) 10.00 Outstanding at March 31, 2017 41,800 $ 10.16 Outstanding at December 31, 2017 22,200 $ 10.31 Options exercised (3,000 ) 10.00 Outstanding at March 31, 2018 19,200 $ 10.35 1.48 years $ 227,000 Exercisable at March 31, 2018 19,200 $ 10.35 1.48 years $ 227,000 For the three months ended March 31, 2018 and 2017, there was no unrecognized compensation expense related to nonvested share-based compensation arrangements granted under the 2007 plan. In 2012, the Company’s Board of Directors and shareholders adopted the Directors’ Plan. The Directors’ Plan permits the Company’s and the Bank’s directors to elect to receive any compensation to be paid to them in shares of the Company’s common stock. Pursuant to the Directors’ Plan, each director is permitted to make an election to receive shares of stock instead of cash. To encourage directors to elect to receive stock, the Directors’ Plan provides that if a director elects to receive stock, he or she will receive in common stock 110% of the amount of cash fees set by the Board or the Compensation and Nominating Committee. The value of stock to be awarded pursuant to the Directors’ Plan will be the closing price of a share of common stock as traded on the Over-the

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	3 Months Ended
	Mar. 31, 2018
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances	(7) Federal Home Loan Bank Advances Federal Home Loan Bank (“FHLB”) advances are collateralized by a blanket lien on qualifying residential real estate, commercial real estate, home equity lines of credit and multi-family loans. Under this blanket lien, the Company could borrow up to $38.0 million at March 31, 2018. At March 31, 2018 and December 31, 2017, the Company had no outstanding loans under this line.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	(8) Fair Value of Financial Instruments The estimated fair values and fair value measurement method with respect to the Company’s financial instruments were as follows: At March 31, 2018 At December 31, 2017 (in thousands) Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets: Cash and cash equivalents 1 $ 22,175 $ 22,175 $ 32,397 $ 32,397 Securities available for sale 2 48,014 48,014 49,809 49,809 Loans held for sale 3 6,394 6,563 5,880 6,039 Loans, net 3 272,611 270,950 250,259 249,628 Federal Home Loan Bank stock 3 355 355 316 316 Accrued interest receivable 3 985 985 978 978 Financial liabilities- Deposits 3 309,282 309,369 298,297 298,403 Off-Balance Sheet Items 3 — — — — Discussion regarding the assumptions used to compute the estimated fair values of financial instruments can be found in Note 1 to the consolidated financial statements included in the Company’s annual report on Form 10-K

Off-Balance Sheet Financial Ins

Off-Balance Sheet Financial Instruments	3 Months Ended
	Mar. 31, 2018
Text Block [Abstract]
Off-Balance Sheet Financial Instruments	(9) Off-Balance The Company is a party to financial instruments with off-balance interest-rate The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for available lines of credit, construction loans in process and standby letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments as it does for on-balance Commitments to extend credit, construction loans in process and unused lines of credit are agreements to lend to a client as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since some of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each client’s credit worthiness on a case-by-case Standby letters of credit are written conditional commitments issued by the Company to guarantee the performance of a client to a third party. These letters of credit are primarily issued to support third-party borrowing arrangements and generally have expiration dates within one year of issuance. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to clients. In the event the client does not perform in accordance with the terms of the agreement with the third party, we would be required to fund the commitment. The maximum potential amount of future payments we could be required to make is represented by the contractual amount of the commitment. If the commitment is funded, we would be entitled to seek recovery from the client. Some of the Company’s standby letters of credit are secured by collateral and those secured letters of credit totaled $457,000 at March 31, 2018. Guaranteed accounts are irrevocable standby letters of credit issued by us to guarantee a client’s credit line with our third-party credit card company, First Arkansas Bank & Trust. As a part of this agreement, we are responsible for the established credit limit on certain accounts plus 10%. The maximum potential amount of future payments we could be required to make is represented by the dollar amount disclosed in the table below. Standby letters of credit and commitments to extend credit typically result in loans with a market interest rate when funded. In 2016, the Company entered into an agreement with another bank. This agreement references an interest rate swap that was transacted between the other bank and its loan client (the “Counterparty”). Should the Counterparty default on its obligations under the interest rate swap agreement with the other bank, then the Company would be liable for 13.208% of all swap liabilities. The maximum potential credit exposure under this contract at March 31, 2018 is $21,000. The maximum potential amount of future payments we could be required to make for off-balance At March 31, 2018 (in thousands) Commitments to extend credit $ 9,942 Construction loans in process $ 15,112 Unused lines of credit $ 36,194 Standby letters of credit $ 1,883 Standby performance letters of credit $ 214 Guaranteed accounts $ 1,220

General (Policies)

General (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Comprehensive Income	Comprehensive Income. available-for-sale
Stock-Based Compensation	Stock-Based Compensation.
Mortgage Banking Revenue	Mortgage Banking Revenue.
Recent Accounting Standards Update	Recent Accounting Standards Update. No. 2016-01, Financial Instruments-Overall (Subtopic 825-10): available-for-sale In February 2016, the FASB issued ASU No. 2016-2, Leases (Topic 842) In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326) available-for-sale Recent Accounting Standards Update, Continued. The new guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is in the process of determining the effect of the ASU on its consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-01, Business In March 2017, the FASB issued ASU No. 2017-08, In February 2018, the FASB issued ASU No. 2018-02), Income Statement Reporting Comprehensive Income (Topic 220)

Securities Available for Sale (

Securities Available for Sale (Tables)	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Summary of Carrying Amount and Fair Values of Securities	Securities are classified according to management’s intent. The carrying amount of securities and fair values are as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) At March 31, 2018 U.S. Government agency securities $ 1,076 $ — $ (22 ) $ 1,054 Municipal securities 12,268 55 (242 ) 12,081 Mortgage-backed securities 35,796 20 (937 ) 34,879 Total $ 49,140 $ 75 $ (1,201 ) $ 48,014 At December 31, 2017 U.S. Government agency securities $ 1,251 $ 6 $ (8 ) $ 1,249 Municipal securities 12,340 128 (95 ) 12,373 Mortgage-backed securities 36,614 23 (450 ) 36,187 Total $ 50,205 $ 157 $ (553 ) $ 49,809
Schedule of Sale of Securities Available for Sale	The following table summarizes the sale of securities available for sale. Three Months Ended (in thousands) 2018 2017 Proceeds from sale of securities $ — $ 750 Gross gains — — Gross losses — (1 ) Net loss on sale of securities $ — $ (1 )
Summary of Securities in Continuous Unrealized Loss Position	Securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, are as follows: Less Than Twelve Months Over Twelve Months Gross Fair Gross Fair (in thousands) At March 31, 2018 Securities Available for Sale U.S. Government agency securities $ (22 ) $ 1,054 $ — $ — Municipal securities (187 ) 6,222 (55 ) 1,202 Mortgage-backed securities (717 ) 28,884 (220 ) 5,290 Total $ (926 ) $ 36,160 $ (275 ) $ 6,492 At December 31, 2017 Securities Available for Sale U.S. Government agency securities $ (8 ) $ 694 $ — $ — Municipal securities (36 ) 1,831 (59 ) 1,203 Mortgage-backed securities (308 ) 29,742 (142 ) 5,667 Total $ (352 ) $ 32,267 $ (201 ) $ 6,870
Securities Available for Sale Measured at Fair Value on Recurring Basis	Securities available for sale measured at fair value on a recurring basis are summarized below: Fair Value Measurements Using Fair Value Quoted Prices In Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (in thousands) At March 31, 2018 U.S. Government agency securities $ 1,054 $ — $ 1,054 $ — Municipal securities 12,081 — 12,081 — Mortgage-backed securities 34,879 — 34,879 — Total $ 48,014 $ — $ 48,014 $ — At December 31, 2017 U.S. Government agency securities $ 1,249 $ — $ 1,249 $ — Municipal securities 12,373 — 12,373 — Mortgage-backed securities 36,187 — 36,187 — Total $ 49,809 $ — $ 49,809 $ —
Scheduled Maturities of Securities with Fair Value and Amortized Cost	The scheduled maturities of securities are as follows: At March 31, 2018 (in thousands) Amortized Cost Fair Value Due in less than one year $ 507 $ 508 Due in one to five years 2,475 2,447 Due in five to ten year 7,620 7,621 Due after ten years 2,742 2,559 Mortgage-backed securities 35,796 34,879 Total $ 49,140 $ 48,014

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Composition of Company's Loan Portfolio, Excluding Loans Held for Sale	The composition of the Company’s loan portfolio, excluding loans held for sale, was the following for the periods presented below: (in thousands) At March 31, 2018 At December 31, 2017 Real estate mortgage loans: Commercial $ 87,388 $ 79,565 Residential and home equity 104,835 94,824 Construction 30,210 26,813 Total real estate mortgage loans 222,433 201,202 Commercial loans 46,022 44,027 Consumer and other loans 7,156 7,742 Total loans 275,611 252,971 Add (deduct): Net deferred loan costs 385 424 Allowance for loan losses (3,385 ) (3,136 ) Loans, net $ 272,611 $ 250,259
Summary of Changes in Allowance for Loan Losses	An analysis of the change in allowance for loan losses follows: Real Estate Mortgage Loans (in thousands) Commercial Residential and Home Equity Construction Commercial Loans Consumer and Other Loans Total Three-Month Period Ended March 31, 2018 Beginning balance $ 894 $ 1,097 $ 331 $ 724 $ 90 $ 3,136 Provision (credit) for loan losses 83 111 41 20 (1 ) 254 Net (charge-offs) recoveries — — — 1 (6 ) (5 ) Ending balance $ 977 $ 1,208 $ 372 $ 745 $ 83 $ 3,385 Three-Month Period Ended March 31, 2017 Beginning balance $ 775 $ 1,074 $ 258 $ 714 $ 55 $ 2,876 Provision (credit) for loan losses (8 ) 12 35 (10 ) 6 35 Net (charge-offs) recoveries — — — — (3 ) (3 ) Ending balance $ 767 $ 1,086 $ 293 $ 704 $ 58 $ 2,908 At March 31, 2018 Individually evaluated for impairment: Recorded investment $ 611 $ 243 $ — $ 126 $ — $ 980 Balance in allowance for loan losses $ — $ — $ — $ 126 $ — $ 126 Collectively evaluated for impairment: Recorded investment $ 86,777 $ 104,592 $ 30,210 $ 45,896 $ 7,156 $ 274,631 Balance in allowance for loan losses $ 977 $ 1,208 $ 372 $ 619 $ 83 $ 3,259 At December 31, 2017 Individually evaluated for impairment: Recorded investment $ — $ — $ — $ 134 $ — $ 134 Balance in allowance for loan losses $ — $ — $ — $ 134 $ — $ 134 Collectively evaluated for impairment: Recorded investment $ 79,565 $ 94,824 $ 26,813 $ 43,893 $ 7,742 $ 252,837 Balance in allowance for loan losses $ 894 $ 1,097 $ 331 $ 590 $ 90 $ 3,002
Summary of Loan Credit Quality	The following summarizes the loan credit quality: Real Estate Mortgage Loans (in thousands) Commercial Residential and Home Construction Commercial Consumer and Other Total At March 31, 2018 Grade: Pass $ 82,453 $ 102,130 $ 30,051 $ 44,768 $ 7,129 $ 266,531 Special mention 4,324 2,298 — 704 27 7,353 Substandard 611 407 159 550 — 1,727 Doubtful — — — — — — Loss — — — — — — Total $ 87,388 $ 104,835 $ 30,210 $ 46,022 $ 7,156 $ 275,611 At December 31, 2017 Grade: Pass $ 74,560 $ 92,282 $ 26,356 $ 42,874 $ 7,715 $ 243,787 Special mention 4,382 2,122 298 591 27 7,420 Substandard 623 420 159 562 — 1,764 Doubtful — — — — — — Loss — — — — — — Total $ 79,565 $ 94,824 $ 26,813 $ 44,027 $ 7,742 $ 252,971
Summary of Past Due Loans	Age analysis of past due loans is as follows: Accruing Loans (in thousands) 30-59 Days 60-89 Days Greater Than 90 Days Past Due Total Past Current Nonaccrual Total Loans At March 31, 2018: Real estate mortgage loans: Commercial $ — $ — $ — $ — $ 87,388 $ — $ 87,388 Residential and home equity — — — — 104,592 243 104,835 Construction — — — — 30,210 — 30,210 Commercial loans — — — — 45,896 126 46,022 Consumer and other loans — — — — 7,156 — 7,156 Total $ — $ — $ — $ — $ 275,242 $ 369 $ 275,611 At December 31, 2017: Real estate mortgage loans: Commercial $ — $ 623 $ — $ 623 $ 78,942 $ — $ 79,565 Residential and home equity — 255 — 255 94,569 — 94,824 Construction — — — — 26,813 — 26,813 Commercial loans — — — — 43,893 134 44,027 Consumer and other loans — — — — 7,742 — 7,742 Total $ — $ 878 $ — $ 878 $ 251,959 $ 134 $ 252,971
Summary of Impaired Loans	The following summarizes the amount of impaired loans: With No Related With an Allowance Recorded Total (in thousands) Recorded Unpaid Contractual Principal Recorded Unpaid Contractual Principal Related Recorded Unpaid Contractual Principal Related At March 31, 2018: Real estate mortgage loans: Commercial $ 611 $ 611 $ — $ — $ — $ 611 $ 611 $ — Residential & home equity 243 243 — — — 243 243 — Commercial loans — — 126 126 126 126 126 126 Total $ 854 $ 854 $ 126 $ 126 $ 126 $ 980 $ 980 $ 126 At December 31, 2017: Commercial loans $ — $ — $ 134 $ 134 $ 134 $ 134 $ 134 $ 134 Total $ — $ — $ 134 $ 134 $ 134 $ 134 $ 134 $ 134
Summary of Average Net Investment in Impaired Loans and Interest Income Recognized and Received on Impaired Loans	The average net investment in impaired loans and interest income recognized and received on impaired loans are as follows: Three Months Ended March 31, 2018 2017 (in thousands) Average Recorded Interest Income Interest Income Average Recorded Interest Income Interest Income Real estate mortgage loans: Commercial $ 41 $ — $ — $ — $ — $ — Residential and home equity 173 — — 650 — — Commercial loans 146 — 2 73 — 1 Construction — — — 74 — — Total $ 360 $ — $ 2 $ 797 $ — $ 1
Summary of Loans Determined to be Troubled Debt Restructurings	The Company entered into one new TDR during the quarter ended March 31, 2018 and no new TDRs during the quarter ended March 31, 2017 as detailed in the following table. Three Months Ended March 31, 2018 2017 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Current Modification Outstanding Recorded Investment Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Current Modification Outstanding Recorded Investment (in thousands) Troubled Debt Restructurings – Residential and home equity: Modified principal 1 $ 619 $ 611 $ 611 — $ — $ — $ — Total 1 $ 619 $ 611 $ 611 — $ — $ — $ —

Regulatory Capital (Tables)

Regulatory Capital (Tables)	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Summary of Regulatory Capital Requirements and Bank's Capital Position	The Bank’s actual capital amounts and percentages are also presented in the following table. Actual For Capital Adequacy For Well Capitalized (dollars in thousands) Amount Percentage Amount Percentage Amount Percentage As of March 31, 2018 Tier 1 Leverage Capital $ 34,038 9.69 % $ 14,050 4.00 % $ 17,562 5.00 % Common Equity Tier 1 Risk-based Capital 34,038 12.38 12,373 4.50 17,872 6.50 Tier 1 Risk-based Capital 34,038 12.38 16,497 6.00 21,997 8.00 Total Risk-based Capital 37,423 13.61 21,997 8.00 27,496 10.00 As of December 31, 2017 Tier 1 Leverage Capital 33,146 9.48 13,983 4.00 17,479 5.00 Common Equity Tier 1 Risk-based Capital 33,146 12.80 11,654 4.50 16,834 6.50 Tier 1 Risk-based Capital 33,146 12.80 15,539 6.00 20,718 8.00 Total Risk-based Capital 36,282 14.01 20,718 8.00 25,898 10.00

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Common Share	For the three months ended March 31, 2018 and 2017, outstanding stock options are considered dilutive securities for purposes of calculating diluted EPS which was computed using the treasury stock method. 2018 2017 (dollars in thousands, except per share amounts) Earnings Weighted- Average Shares Per Share Amount Earnings Weighted- Average Shares Per Share Amount Three Months Ending March 31: Basic EPS: Net earnings $ 754 3,120,613 $ 0.24 $ 536 2,005,868 $ 0.27 Effect of dilutive securities-incremental shares from assumed conversion of options 2,892 3,288 Diluted EPS: Net earnings $ 754 3,123,505 $ 0.24 $ 536 2,009,156 $ 0.27

Stock Option Plans (Tables)

Stock Option Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Black-Scholes Option-Pricing Model Assumptions	The fair value of each option granted during the three months ended March 31, 2018 and 2017 was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions: Period Ended March 31, 2018 2017 Weighted average risk-free interest rate 1.47 % 1.48 % Expected dividend yield 0.41 % — % Expected stock volatility 11.90 % 8.54 % Expected life in years 2.50 3.00 Per share fair value of options issued during period $ 1.49 $ 1.26
2015 Stock Incentive Compensation Plan [Member]
Summary of Company's Plan	Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at December 31, 2016 — $ — Options granted 11,540 17.03 Outstanding at March 31, 2017 11,540 $ 17.03 Outstanding at December 31, 2017 11,540 $ 17.03 Options granted 15,667 17.21 Outstanding at March 31, 2018 27,207 $ 17.13 4.46 years $ 137,000 Exercisable at March 31, 2018 27,207 $ 17.13 4.46 years $ 137,000
2007 Incentive Award Plan [Member]
Summary of Company's Plan	A summary of the activity in the Company’s 2007 Stock Option Plan is as follows: Number of Options Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at December 31, 2016 42,200 $ 10.16 Options exercised (200 ) 10.00 Options forfeited (200 ) 10.00 Outstanding at March 31, 2017 41,800 $ 10.16 Outstanding at December 31, 2017 22,200 $ 10.31 Options exercised (3,000 ) 10.00 Outstanding at March 31, 2018 19,200 $ 10.35 1.48 years $ 227,000 Exercisable at March 31, 2018 19,200 $ 10.35 1.48 years $ 227,000

Fair Value of Financial Instr23

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Values and Fair Value Measurement Method of Financial Instruments	The estimated fair values and fair value measurement method with respect to the Company’s financial instruments were as follows: At March 31, 2018 At December 31, 2017 (in thousands) Level Carrying Amount Fair Value Carrying Amount Fair Value Financial assets: Cash and cash equivalents 1 $ 22,175 $ 22,175 $ 32,397 $ 32,397 Securities available for sale 2 48,014 48,014 49,809 49,809 Loans held for sale 3 6,394 6,563 5,880 6,039 Loans, net 3 272,611 270,950 250,259 249,628 Federal Home Loan Bank stock 3 355 355 316 316 Accrued interest receivable 3 985 985 978 978 Financial liabilities- Deposits 3 309,282 309,369 298,297 298,403 Off-Balance Sheet Items 3 — — — —

Off-Balance Sheet Financial I24

Off-Balance Sheet Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Text Block [Abstract]
Summary of Off-Balance Sheet Financial Instruments	The maximum potential amount of future payments we could be required to make for off-balance At March 31, 2018 (in thousands) Commitments to extend credit $ 9,942 Construction loans in process $ 15,112 Unused lines of credit $ 36,194 Standby letters of credit $ 1,883 Standby performance letters of credit $ 214 Guaranteed accounts $ 1,220

General - Additional Informatio

General - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018Office
Accounting Policies [Abstract]
Percent of outstanding common stock owns	100.00%
Number of banking offices	3
Statutory federal income tax rate	21.00%

Securities Available for Sale -

Securities Available for Sale - Summary of Carrying Amount and Fair Values of Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 49,140	$ 50,205
Gross Unrealized Gains	75	157
Gross Unrealized Losses	(1,201)	(553)
Fair Value	48,014	49,809
US Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,076	1,251
Gross Unrealized Gains		6
Gross Unrealized Losses	(22)	(8)
Fair Value	1,054	1,249
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,268	12,340
Gross Unrealized Gains	55	128
Gross Unrealized Losses	(242)	(95)
Fair Value	12,081	12,373
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	35,796	36,614
Gross Unrealized Gains	20	23
Gross Unrealized Losses	(937)	(450)
Fair Value	$ 34,879	$ 36,187

Securities Available for Sale27

Securities Available for Sale - Schedule of Sale of Securities Available for Sale (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of securities		$ 750
Gross gains	$ 0	0
Gross losses		(1)
Net loss on sale of securities		$ (1)

Securities Available for Sale28

Securities Available for Sale - Summary of Securities in Continuous Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	$ (926)	$ (352)
Fair Value, Less Than Twelve Months	36,160	32,267
Gross Unrealized Losses, Over Twelve Months	(275)	(201)
Fair Value, Over Twelve Months	6,492	6,870
US Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	(22)	(8)
Fair Value, Less Than Twelve Months	1,054	694
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	(187)	(36)
Fair Value, Less Than Twelve Months	6,222	1,831
Gross Unrealized Losses, Over Twelve Months	(55)	(59)
Fair Value, Over Twelve Months	1,202	1,203
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	(717)	(308)
Fair Value, Less Than Twelve Months	28,884	29,742
Gross Unrealized Losses, Over Twelve Months	(220)	(142)
Fair Value, Over Twelve Months	$ 5,290	$ 5,667

Securities Available for Sale29

Securities Available for Sale - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018USD ($)Securities	Mar. 31, 2017USD ($)	Dec. 31, 2017Securities
Investments, Debt and Equity Securities [Abstract]
Number of securities in unrealized loss | Securities	41		34
Securities transferred in or out of Level 1, Level 2 or Level 3 | $	$ 0	$ 0

Securities Available for Sale30

Securities Available for Sale - Securities Available for Sale Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 48,014	$ 49,809
US Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	1,054	1,249
Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	12,081	12,373
Mortgage-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	34,879	36,187
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	48,014	49,809
Level 2 [Member] | US Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	1,054	1,249
Level 2 [Member] | Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	12,081	12,373
Level 2 [Member] | Mortgage-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 34,879	$ 36,187

Securities Available for Sale31

Securities Available for Sale - Scheduled Maturities of Securities with Fair Value and Amortized Cost (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due in less than one year, Amortized cost	$ 507
Due in one to five years, Amortized cost	2,475
Due in five to ten year, Amortized cost	7,620
Due after ten years, Amortized cost	2,742
Mortgage-backed securities, Amortized cost	35,796
Amortized Cost	49,140	$ 50,205
Due in less than one year, Fair value	508
Due in one to five years, Fair value	2,447
Due in five to ten year, Fair value	7,621
Due after ten years, Fair value	2,559
Mortgage-backed securities, Fair value	34,879
Total	$ 48,014	$ 49,809

Loans - Composition of Company'

Loans - Composition of Company's Loan Portfolio, Excluding Loans Held for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 275,611	$ 252,971
Net deferred loan costs	385	424
Allowance for loan losses	(3,385)	(3,136)	$ (2,908)	$ (2,876)
Loans, net	272,611	250,259
Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	222,433	201,202
Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	87,388	79,565
Allowance for loan losses	(977)	(894)	(767)	(775)
Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	104,835	94,824
Allowance for loan losses	(1,208)	(1,097)	(1,086)	(1,074)
Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	30,210	26,813
Allowance for loan losses	(372)	(331)	(293)	(258)
Loans and Finance Receivables [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	46,022	44,027
Allowance for loan losses	(745)	(724)	(704)	(714)
Loans and Finance Receivables [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	7,156	7,742
Allowance for loan losses	$ (83)	$ (90)	$ (58)	$ (55)

Loans - Summary of Changes in A

Loans - Summary of Changes in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 3,136	$ 2,876
Provision (credit) for loan losses	254	35
Net (charge-offs) recoveries	(5)	(3)
Ending balance	3,385	2,908
Individually evaluated for impairment:
Recorded investment	980		$ 134
Balance in allowance for loan losses	126		134
Collectively evaluated for impairment:
Recorded investment	274,631		252,837
Balance in allowance for loan losses	3,259		3,002
Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	894	775
Provision (credit) for loan losses	83	(8)
Ending balance	977	767
Individually evaluated for impairment:
Recorded investment	611
Collectively evaluated for impairment:
Recorded investment	86,777		79,565
Balance in allowance for loan losses	977		894
Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,097	1,074
Provision (credit) for loan losses	111	12
Ending balance	1,208	1,086
Individually evaluated for impairment:
Recorded investment	243
Collectively evaluated for impairment:
Recorded investment	104,592		94,824
Balance in allowance for loan losses	1,208		1,097
Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	331	258
Provision (credit) for loan losses	41	35
Ending balance	372	293
Collectively evaluated for impairment:
Recorded investment	30,210		26,813
Balance in allowance for loan losses	372		331
Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	724	714
Provision (credit) for loan losses	20	(10)
Net (charge-offs) recoveries	1
Ending balance	745	704
Individually evaluated for impairment:
Recorded investment	126		134
Balance in allowance for loan losses	126		134
Collectively evaluated for impairment:
Recorded investment	45,896		43,893
Balance in allowance for loan losses	619		590
Loans and Finance Receivables [Member] | Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	90	55
Provision (credit) for loan losses	(1)	6
Net (charge-offs) recoveries	(6)	(3)
Ending balance	83	$ 58
Collectively evaluated for impairment:
Recorded investment	7,156		7,742
Balance in allowance for loan losses	$ 83		$ 90

Loans - Additional Information

Loans - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018USD ($)SecurityLoanClassContractsSegment	Mar. 31, 2017USD ($)Contracts	Dec. 31, 2017USD ($)
Financing Receivable, Impaired [Line Items]
Number of loan portfolio | Segment	3
Number of loan portfolio class | Class	5
Financing receivable, recorded investment, nonaccrual status | SecurityLoan	3
Nonaccrual loan	$ 369,000		$ 134,000
Impaired Loans [Member] | Collateral Pledged [Member]
Financing Receivable, Impaired [Line Items]
Loans measured at fair value on a nonrecurring basis	0	$ 0
Minimum [Member]
Financing Receivable, Impaired [Line Items]
Impairment valuation loan limit	$ 500,000
Minimum [Member] | Loans Receivable [Member]
Financing Receivable, Impaired [Line Items]
Maturity period of loan	1 year
Maximum [Member] | Loans Receivable [Member]
Financing Receivable, Impaired [Line Items]
Maturity period of loan	10 years
Real Estate Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Number of loan portfolio class | Class	3
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Description of interest rate of loans	Equipment loans generally have a term of five years or less and may have a fixed or variable rate
Commercial Loans [Member] | Period 1 [Member]
Financing Receivable, Impaired [Line Items]
Period of portfolio mortgage adjustable rate	1 year
Period of secondary market mortgage fixed rate	15 years
Commercial Loans [Member] | Period 2 [Member]
Financing Receivable, Impaired [Line Items]
Period of portfolio mortgage adjustable rate	3 years
Period of secondary market mortgage fixed rate	30 years
Commercial Loans [Member] | Period 3 [Member]
Financing Receivable, Impaired [Line Items]
Period of portfolio mortgage adjustable rate	5 years
Commercial Loans [Member] | Period 4 [Member]
Financing Receivable, Impaired [Line Items]
Period of portfolio mortgage adjustable rate	7 years
Commercial Loans [Member] | Minimum [Member]
Financing Receivable, Impaired [Line Items]
Maturity period of loan	3 years
Commercial Loans [Member] | Maximum [Member]
Financing Receivable, Impaired [Line Items]
Maturity period of loan	5 years
Construction Real Estate Mortgage Loans [Member] | Minimum [Member]
Financing Receivable, Impaired [Line Items]
Maturity period of loan	1 year
Construction Real Estate Mortgage Loans [Member] | Maximum [Member]
Financing Receivable, Impaired [Line Items]
Maturity period of loan	2 years
Troubled Debt Restructurings [Member]
Financing Receivable, Impaired [Line Items]
Number of loans | Contracts	1	0
Loans identified as TDRs	$ 663,000

Loans - Summary of Loan Credit

Loans - Summary of Loan Credit Quality (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	$ 275,611	$ 252,971
Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	222,433	201,202
Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	87,388	79,565
Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	104,835	94,824
Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	30,210	26,813
Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	46,022	44,027
Loans and Finance Receivables [Member] | Consumer and Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	7,156	7,742
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	266,531	243,787
Pass [Member] | Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	82,453	74,560
Pass [Member] | Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	102,130	92,282
Pass [Member] | Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	30,051	26,356
Pass [Member] | Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	44,768	42,874
Pass [Member] | Loans and Finance Receivables [Member] | Consumer and Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	7,129	7,715
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	7,353	7,420
Special Mention [Member] | Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	4,324	4,382
Special Mention [Member] | Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	2,298	2,122
Special Mention [Member] | Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality		298
Special Mention [Member] | Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	704	591
Special Mention [Member] | Loans and Finance Receivables [Member] | Consumer and Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	27	27
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	1,727	1,764
Substandard [Member] | Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	611	623
Substandard [Member] | Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	407	420
Substandard [Member] | Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	159	159
Substandard [Member] | Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans by credit quality	$ 550	$ 562

Loans - Summary of Past Due Loa

Loans - Summary of Past Due Loans (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Total Past Due		$ 878,000
Current	$ 275,242,000	251,959,000
Nonaccrual Loans	369,000	134,000
Total Loans	275,611,000	252,971,000
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Total Past Due		878,000
Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	222,433,000	201,202,000
Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Total Past Due		623,000
Current	87,388,000	78,942,000
Total Loans	87,388,000	79,565,000
Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Total Past Due		623,000
Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Total Past Due		255,000
Current	104,592,000	94,569,000
Nonaccrual Loans	243,000
Total Loans	104,835,000	94,824,000
Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans Total Past Due		255,000
Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	30,210,000	26,813,000
Total Loans	30,210,000	26,813,000
Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	45,896,000	43,893,000
Nonaccrual Loans	126,000	134,000
Total Loans	46,022,000	44,027,000
Loans and Finance Receivables [Member] | Consumer and Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	7,156,000	7,742,000
Total Loans	$ 7,156,000	$ 7,742,000

Loans - Summary of Impaired Loa

Loans - Summary of Impaired Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
With No Related Allowance Recorded Investment	$ 854
With No Related Allowance Unpaid Contractual Principal Balance	854
With an Allowance Recorded Investment	126	$ 134
With an Allowance Recorded Unpaid Contractual Principal Balance	126	134
With an Allowance Recorded Related Allowance	126	134
Recorded Investment	980	134
Unpaid Contractual Principal Balance	980	134
Related Allowance	126	134
Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
With No Related Allowance Recorded Investment	611
With No Related Allowance Unpaid Contractual Principal Balance	611
Recorded Investment	611
Unpaid Contractual Principal Balance	611
Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
With No Related Allowance Recorded Investment	243
With No Related Allowance Unpaid Contractual Principal Balance	243
Recorded Investment	243
Unpaid Contractual Principal Balance	243
Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
With an Allowance Recorded Investment	126	134
With an Allowance Recorded Unpaid Contractual Principal Balance	126	134
With an Allowance Recorded Related Allowance	126	134
Recorded Investment	126	134
Unpaid Contractual Principal Balance	126	134
Related Allowance	$ 126	$ 134

Loans - Summary of Average Net

Loans - Summary of Average Net Investment in Impaired Loans and Interest Income Recognized and Received on Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 360	$ 797
Interest Income Recognized	0	0
Interest Income Received	2	1
Mortgage Receivable [Member] | Commercial Real Estate Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	41
Interest Income Recognized	0	0
Mortgage Receivable [Member] | Residential and Home Equity Real Estate Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	173	650
Interest Income Recognized	0	0
Mortgage Receivable [Member] | Construction Real Estate Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		74
Interest Income Recognized	0	0
Loans and Finance Receivables [Member] | Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	146	73
Interest Income Recognized	0	0
Interest Income Received	$ 2	$ 1

Loans - Summary of Loans Determ

Loans - Summary of Loans Determined to be Troubled Debt Restructurings (Detail) - Residential and Home Equity Real Estate Mortgage Loans [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Contracts	Mar. 31, 2017USD ($)Contracts
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contracts	1	0
Pre-Modification Outstanding Recorded Investment	$ 619	$ 0
Post-Modification Outstanding Recorded Investment	611	0
Current Modification Outstanding Recorded Investment	$ 611	$ 0
Modified Principal [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contracts	1	0
Pre-Modification Outstanding Recorded Investment	$ 619	$ 0
Post-Modification Outstanding Recorded Investment	611	0
Current Modification Outstanding Recorded Investment	$ 611	$ 0

Regulatory Capital - Additional

Regulatory Capital - Additional Information (Detail)	Jan. 01, 2019	Mar. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Percentage of capital conservation buffer minimum risk-based capital requirement		1.875%
Scenario, Forecast [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer required	2.50%

Regulatory Capital - Summary of

Regulatory Capital - Summary of Regulatory Capital Requirements and Bank's Capital Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Tier 1 Leverage Capital, Actual amount	$ 34,038	$ 33,146
Tier 1 Leverage Capital Ratio, Actual Percentage	9.69%	9.48%
Tier 1 Leverage Capital, For Capital Adequacy Purposes, Amount	$ 14,050	$ 13,983
Tier 1 Leverage Capital Ratio, For Capital Adequacy Purposes, Percentage	4.00%	4.00%
Tier 1 Leverage Capital, For Well Capitalized Purposes, Amount	$ 17,562	$ 17,479
Tier 1 Leverage Capital Ratio, For Well Capitalized Purposes, Percentage	5.00%	5.00%
Common Equity Tier 1 Risk-Based Capital Ratio, Actual Amount	$ 34,038	$ 33,146
Common Equity Tier 1 Risk-Based Capital Ratio, Actual Percentage	12.38%	12.80%
Common Equity Tier 1 Risk-Based Capital Ratio, For Capital Adequacy Purposes, Amount	$ 12,373	$ 11,654
Common Equity Tier 1 Risk-Based Capital Ratio, For Capital Adequacy Purposes, Percentage	4.50%	4.50%
Common Equity Tier 1 Risk-Based Capital Ratio, For Well Capitalized Purposes, Amount	$ 17,872	$ 16,834
Common Equity Tier 1 Risk-Based Capital Ratio, For Well Capitalized Purposes, Percentage	6.50%	6.50%
Tier 1 Risk-Based Capital, Actual Amount	$ 34,038	$ 33,146
Tier 1 Risk-Based Capital Ratio, Actual Percentage	12.38%	12.80%
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, Amount	$ 16,497	$ 15,539
Tier 1 Risk-Based Capital Ratio, For Capital Adequacy Purposes, Percentage	6.00%	6.00%
Tier 1 Risk-Based Capital, For Well Capitalized Purposes, Amount	$ 21,997	$ 20,718
Common Equity Tier 1 Risk-Based Capital Ratio, For Well Capitalized Purposes, Percentage	8.00%	8.00%
Total Risk-Based Capital, Actual Amount	$ 37,423	$ 36,282
Total Risk-Based Capital Ratio, Actual Percentage	13.61%	14.01%
Total Risk-Based Capital, For Capital Adequacy Purposes, Amount	$ 21,997	$ 20,718
Total Risk-Based Capital Ratio, For Capital Adequacy Purposes, Percentage	8.00%	8.00%
Total Risk-Based Capital, For Well Capitalized Purposes, Amount	$ 27,496	$ 25,898
Total Risk-Based Capital Ratio, For Well Capitalized Purposes, Percentage	10.00%	10.00%

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings	$ 754	$ 536
Earnings	$ 754	$ 536
Weighted-Average Shares	3,120,613	2,005,868
Effect of dilutive securities-incremental shares from assumed conversion of options	2,892	3,288
Weighted-Average Shares	3,123,505	2,009,156
Per Share Amount	$ 0.24	$ 0.27
Per Share Amount	$ 0.24	$ 0.27

Stock Option Plans - Additional

Stock Option Plans - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 23,000	$ 15,000
Common stock issued as compensation to directors, value	$ 17,000	$ 19,000
2015 Stock Incentive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	15,667	11,540
2015 Stock Incentive Compensation Plan [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares to be issued under stock option plan	500,000
Number of shares issued under stock option plan	0
Maximum percentage of shares issued	15.00%
Shares granted	27,207
Shares available for grant	441,208
Unrecognized compensation expense related to nonvested share-based compensation arrangements granted	$ 0		$ 0
Directors Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares to be issued under stock option plan	74,805
Shares granted	792	1,273
Shares available for grant	57,310
Stock consideration on percentage of common stock received upon cash fees	110.00%
Common stock issued as compensation to directors, value	$ 17,000	$ 19,000

Stock Option Plans - Summary of

Stock Option Plans - Summary of Company's Plan (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
2015 Stock Incentive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding beginning balance	11,540
Number of Options, granted	15,667	11,540
Number of Options, Outstanding ending balance	27,207	11,540
Number of Options, Exercisable ending balance	27,207
Weighted-Average Exercise Price, Outstanding beginning balance	$ 17.03
Weighted-Average Exercise Price, Options granted	17.21	$ 17.03
Weighted-Average Exercise Price, Outstanding ending balance	17.13	$ 17.03
Weighted-Average Exercise Price, Exercisable	$ 17.13
Weighted-Average Remaining Contractual Term, Outstanding	4 years 5 months 15 days
Weighted-Average Remaining Contractual Term, Exercisable	4 years 5 months 15 days
Aggregate Intrinsic Value, Outstanding	$ 137,000
Aggregate Intrinsic Value, Exercisable	$ 137,000
2007 Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding beginning balance	22,200	42,200
Number of Options, exercised	(3,000)	(200)
Number of Options, forfeited		(200)
Number of Options, Outstanding ending balance	19,200	41,800
Number of Options, Exercisable ending balance	19,200
Weighted-Average Exercise Price, Outstanding beginning balance	$ 10.31	$ 10.16
Weighted-Average Exercise Price, Options exercised	10	10
Weighted-Average Exercise Price, Options forfeited		10
Weighted-Average Exercise Price, Outstanding ending balance	10.35	$ 10.16
Weighted-Average Exercise Price, Exercisable	$ 10.35
Weighted-Average Remaining Contractual Term, Outstanding	1 year 5 months 23 days
Weighted-Average Remaining Contractual Term, Exercisable	1 year 5 months 23 days
Aggregate Intrinsic Value, Outstanding	$ 227,000
Aggregate Intrinsic Value, Exercisable	$ 227,000

Stock Option Plans - Black-Scho

Stock Option Plans - Black-Scholes Option-Pricing Model Assumptions (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted average risk-free interest rate	1.47%	1.48%
Expected dividend yield	0.41%
Expected stock volatility	11.90%	8.54%
Expected life in years	2 years 6 months	3 years
Per share fair value of options issued during period	$ 1.49	$ 1.26

Federal Home Loan Bank Advanc46

Federal Home Loan Bank Advances - Additional Information (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Advances from Federal Home Loan Banks [Abstract]
Maximum borrowing capacity under FHLB	$ 38,000,000
Outstanding advances under FHLB	$ 0	$ 0

Fair Value of Financial Instr47

Fair Value of Financial Instruments - Schedule of Estimated Fair Values and Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 22,175	$ 32,397	$ 35,200	$ 36,165
Securities available for sale	48,014	49,809
Loans held for sale	6,394	5,880
Loans, net	272,611	250,259
Federal Home Loan Bank stock	355	316
Accrued interest receivable	985	978
Deposits	309,282	298,297
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	48,014	49,809
Estimated Fair Value [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	22,175	32,397
Estimated Fair Value [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	48,014	49,809
Estimated Fair Value [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	6,563	6,039
Loans, net	270,950	249,628
Federal Home Loan Bank stock	355	316
Accrued interest receivable	985	978
Deposits	309,369	298,403
Off Balance Sheet Items	0	0
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	22,175	32,397
Securities available for sale	48,014	49,809
Loans held for sale	6,394	5,880
Loans, net	272,611	250,259
Federal Home Loan Bank stock	355	316
Accrued interest receivable	985	978
Deposits	309,282	298,297
Off Balance Sheet Items	$ 0	$ 0

Off-Balance Sheet Financial I48

Off-Balance Sheet Financial Instruments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018USD ($)
Standby Financial Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Debt instrument maturity period	1 year
Collateral amount	$ 457,000
Contractual amounts with off-balance-sheet risk	$ 1,883,000
Standby Financial Letters of Credit [Member] | Credit Availability Concentration Risk [Member] | Swap Liabilities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Percentage of additional credit limit guaranteed	10.00%
Swap Participation Agreement [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with off-balance-sheet risk	$ 21,000
Swap Participation Agreement [Member] | Credit Availability Concentration Risk [Member] | Swap Liabilities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Percentage of additional credit limit guaranteed	13.208%

Off-Balance Sheet Financial I49

Off-Balance Sheet Financial Instruments - Summary of Off-Balance Sheet Financial Instruments (Detail)	3 Months Ended
	Mar. 31, 2018USD ($)
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with off-balance-sheet risk	$ 9,942,000
Construction Loans in Process [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with off-balance-sheet risk	15,112,000
Unused Lines of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with off-balance-sheet risk	36,194,000
Standby Financial Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with off-balance-sheet risk	1,883,000
Performance Stand By Letters Of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with off-balance-sheet risk	214,000
Guaranteed Accounts [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amounts with off-balance-sheet risk	$ 1,220,000