CSB Bancorp (CSBB) 10-Q 9 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 01, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	CSBB
Entity Registrant Name	CSB BANCORP INC /OH
Entity Central Index Key	0000880417
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		2,742,350

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Cash and cash equivalents
Cash and due from banks	$ 15,110	$ 23,214
Interest-earning deposits in other banks	29,133	22,350
Total cash and cash equivalents	44,243	45,564
Securities
Available-for-sale, at fair value	86,378	85,528
Held-to-maturity (fair value 2019-$19,948; 2018-$20,118)	20,218	20,688
Equity Securities	89	83
Restricted stock, at cost	4,614	4,614
Total securities	111,299	110,913
Loans held for sale	140	108
Loans	548,220	548,974
Less allowance for loan losses	6,287	5,907
Net loans	541,933	543,067
Premises and equipment, net	10,800	9,961
Core deposit intangible	151	167
Goodwill	4,728	4,728
Bank-owned life insurance	16,638	13,554
Accrued interest receivable and other assets	4,913	3,660
TOTAL ASSETS	734,845	731,722
Deposits
Noninterest-bearing	177,404	185,871
Interest-bearing	429,938	420,627
Total deposits	607,342	606,498
Short-term borrowings	36,324	37,415
Other borrowings	8,373	8,525
Accrued interest payable and other liabilities	3,839	2,748
Total liabilities	655,878	655,186
SHAREHOLDERS' EQUITY
Common stock, $6.25 par value. Authorized 9,000,000 shares; issued 2,980,602 shares; outstanding shares (2019 and 2018 - 2,742,242)	18,629	18,629
Additional paid-in capital	9,815	9,815
Retained earnings	56,115	54,288
Treasury stock at cost (shares 2019 and 2018 - 238,360)	(4,784)	(4,784)
Accumulated other comprehensive loss	(808)	(1,412)
Total shareholders' equity	78,967	76,536
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 734,845	$ 731,722

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Held-to-maturity, fair value	$ 19,948	$ 20,118
Common stock, par value	$ 6.25	$ 6.25
Common stock, authorized shares	9,000,000	9,000,000
Common stock, shares issued	2,980,602	2,980,602
Common stock, shares outstanding	2,742,242	2,742,242
Treasury stock, at cost	238,360	238,360

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
INTEREST AND DIVIDEND INCOME
Loans, including fees	$ 7,072	$ 6,140
Taxable securities	587	603
Nontaxable securities	134	161
Other	175	45
Total interest and dividend income	7,968	6,949
INTEREST EXPENSE
Deposits	825	455
Short-term borrowings	93	53
Other borrowings	39	52
Total interest expense	957	560
NET INTEREST INCOME	7,011	6,389
Provision for loan losses	285	324
Net interest income, after provision for loan losses	6,726	6,065
NONINTEREST INCOME
Gain on sale of loans, net	79	77
Earnings on bank owned life insurance	83	81
Unrealized gain or loss on equity securities	6	4
Other income	193	167
Total noninterest income	1,224	1,145
NONINTEREST EXPENSES
Salaries and employee benefits	2,842	2,637
Occupancy expense	204	219
Equipment expense	137	156
Professional and director fees	339	311
Financial institutions and franchise tax expense	153	142
Marketing and public relations	117	120
Software expense	218	213
Debit card expense	127	116
Amortization of intangible assets	16	25
FDIC insurance expense	50	75
Other expenses	588	523
Total noninterest expenses	4,791	4,537
Income before income taxes	3,159	2,673
FEDERAL INCOME TAX PROVISION	619	509
NET INCOME	$ 2,540	$ 2,164
Basic and diluted net earnings per share	$ 0.93	$ 0.79
Deposit Account [Member]
NONINTEREST INCOME
Noninterest income	$ 292	$ 284
Fiduciary and Trust [Member]
NONINTEREST INCOME
Noninterest income	224	219
Debit Card [Member]
NONINTEREST INCOME
Noninterest income	$ 347	$ 313

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 2,540	$ 2,164
Other comprehensive income (loss)
Unrealized gains (losses) arising during the period	749	(1,312)
Amounts reclassified from accumulated other comprehensive income, held-to-maturity	15	22
Income tax effect	(160)	271
Other comprehensive income (loss)	604	(1,019)
Total comprehensive income	$ 3,144	$ 1,145

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at beginning of period at Dec. 31, 2017	$ 70,532	$ 18,629	$ 9,815	$ 47,535	$ (4,784)	$ (663)
Net income	2,164			2,164
Other comprehensive income (loss)	(1,019)					(1,019)
Cumulative effect adjustment equity securities, related to ASU 2016-01				29		(29)
Cash dividends declared	(658)			(658)
Balance at end of period at Mar. 31, 2018	71,019	18,629	9,815	49,070	(4,784)	(1,711)
Balance at beginning of period at Dec. 31, 2018	76,536	18,629	9,815	54,288	(4,784)	(1,412)
Net income	2,540			2,540
Other comprehensive income (loss)	604					604
Cash dividends declared	(713)			(713)
Balance at end of period at Mar. 31, 2019	$ 78,967	$ 18,629	$ 9,815	$ 56,115	$ (4,784)	$ (808)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share	$ 0.26	$ 0.24

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Cash Flows [Abstract]
NET CASH FROM OPERATING ACTIVITIES	$ 1,894	$ 2,308
Securities:
Proceeds from repayments, available-for-sale	1,836	2,034
Proceeds from repayments, held-to-maturity	477	5,312
Purchases, available-for-sale	(2,023)
Purchases, held-to-maturity		(2,029)
Loan originations, net of repayments	870	(14,155)
Property, equipment, and software acquisitions	(976)	(143)
Purchase of bank-owned life insurance	(3,000)
Net cash used in investing activities	(2,816)	(8,981)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	844	(6,841)
Net change in short-term borrowings	(1,091)	(1,130)
Repayment of other borrowings	(152)	(187)
Net cash used in financing activities	(399)	(8,158)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(1,321)	(14,831)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	45,564	36,420
CASH AND CASH EQUIVALENTS AT END OF PERIOD	44,243	21,589
Cash paid during the year for:
Interest	921	572
Income taxes	0	0
Noncash financing activities:
Dividends declared	713	$ 658
Lease adoption:
Right of Use Lease Asset	464
Lease Liability	$ 429

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The accompanying condensed consolidated financial statements include the accounts of CSB Bancorp, Inc. and its wholly-owned subsidiaries, The Commercial and Savings Bank (the “Bank”) and CSB Investment Services, LLC (together referred to as the “Company” or “CSB”). All significant intercompany transactions and balances have been eliminated in consolidation. The condensed consolidated financial statements have been prepared without audit. In the opinion of management, all adjustments (which include normal recurring adjustments) necessary to present fairly the Company’s financial position at March 31, 2019, and the results of operations and changes in cash flows for the periods presented have been made. Certain information and footnote disclosures typically included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been omitted. The Annual Report for CSB for the year ended December 31, 2018, contains Consolidated Financial Statements and related footnote disclosures, which should be read in conjunction with the accompanying Consolidated Financial Statements. The results of operations for the period ended March 31, 2019 are not necessarily indicative of the operating results for the full year or any future interim period. Certain items in the prior-year financial statements were reclassified to conform to the current-year presentation. ADOPTION OF NEW ACCOUNTING PRONOUNCEMENTS ASU 2016-02 right-of-use The Update and its related amendments were adopted as of January 1, 2019, which resulted in the recognition of operating right-of-use 2018-11 RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS ASU 2016-13 one-time one-time ASU 2017-04 ASU 2018-13 ASU 2018-15 Internal-Use internal-use internal-use internal-use ASU 2019-01 . 250-10-50-3

Securities

Securities	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	NOTE 2 – SECURITIES Securities consist of the following at March 31, 2019 and December 31, 2018: (Dollars in thousands) Amortized Gross Gross Fair value March 31, 2019 Available-for-sale U.S. Treasury security $ 999 $ — $ 1 $ 998 U.S. Government agencies 7,350 — 102 7,248 Mortgage-backed securities of government agencies 45,997 59 532 45,524 Asset-backed securities of government agencies 1,012 — 16 996 State and political subdivisions 23,166 185 32 23,319 Corporate bonds 8,636 2 345 8,293 Total available-for-sale 87,160 246 1,028 86,378 Held-to-maturity U.S. Government agencies 9,483 11 206 9,288 Mortgage-backed securities of government agencies 10,735 71 146 10,660 Total held-to-maturity 20,218 82 352 19,948 Equity securities 53 36 — 89 Restricted stock 4,614 — — 4,614 Total securities $ 112,045 $ 364 $ 1,380 $ 111,029 December 31, 2018 Available-for-sale U.S. Treasury security $ 997 $ — $ 1 $ 996 U.S. Government agencies 7,350 — 180 7,170 Mortgage-backed securities of government agencies 45,744 41 884 44,901 Asset-backed securities of government agencies 1,040 — 16 1,024 State and political subdivisions 23,282 49 206 23,125 Corporate bonds 8,646 — 334 8,312 Total available-for-sale 87,059 90 1,621 85,528 Held-to-maturity U.S. Government agencies 9,482 6 390 9,098 Mortgage-backed securities of government agencies 11,206 28 214 11,020 Total held-to-maturity 20,688 34 604 20,118 Equity securities 53 30 — 83 Restricted stock 4,614 — — 4,614 Total securities $ 112,414 $ 154 $ 2,225 $ 110,343 The amortized cost and fair value of debt securities at March 31, 2019, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. (Dollars in thousands) Amortized Fair Available-for-sale Due in one year or less $ 3,477 $ 3,480 Due after one through five years 20,264 20,224 Due after five through ten years 22,565 22,374 Due after ten years 40,854 40,300 Total debt securities available-for-sale $ 87,160 $ 86,378 Held-to-maturity Due after one through five years $ 484 $ 495 Due after five through ten years 3,000 2,917 Due after ten years 16,734 16,536 Total debt securities held-to-maturity $ 20,218 $ 19,948 Securities with a fair value of approximately $82.4 million and $83.4 million were pledged at March 31, 2019 and December 31, 2018, respectively, to secure public deposits, as well as other deposits and borrowings as required or permitted by law. Restricted stock primarily consists of investments in Federal Home Loan Bank of Cincinnati (FHLB) and Federal Reserve Bank stock. The Bank’s investment in FHLB stock amounted to approximately $4.1 million at March 31, 2019 and December 31, 2018. Federal Reserve Bank stock was $471 thousand at March 31, 2019 and December 31, 2018. There were no proceeds from sales of securities for the three month periods ending March 31, 2019 and 2018. The following table presents gross unrealized losses and fair value of securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2019 and December 31, 2018: Securities in a continuous unrealized loss position Less than 12 months 12 months or more Total (Dollars in thousands) Gross Fair Gross Fair Gross Fair March 31, 2019 Available-for-sale U.S. Treasury security $ 1 $ 998 $ — $ — $ 1 $ 998 U.S. Government agencies — — 102 7,248 102 7,248 Mortgage-backed securities of government agencies 1 1,948 531 32,804 532 34,752 Asset-backed securities of government agencies — — 16 996 16 996 State and political subdivisions — — 32 3,302 32 3,302 Corporate bonds 1 574 344 6,717 345 7,291 Held-to-maturity U.S. Government agencies — — 206 8,793 206 8,793 Mortgage-backed securities of government agencies 32 473 114 4,094 146 4,567 Total temporarily impaired securities $ 35 $ 3,993 $ 1,345 $ 63,954 $ 1,380 $ 67,947 December 31, 2018 Available-for-sale U.S. Treasury security $ 1 $ 996 $ — $ — $ 1 $ 996 U.S. Government agencies — — 180 7,170 180 7,170 Mortgage-backed securities of government agencies 33 4,206 851 35,188 884 39,394 Asset-backed securities of government agencies 16 1,024 — — 16 1,024 State and political subdivisions 9 3,326 197 8,626 206 11,952 Corporate bonds 131 5,014 203 3,298 334 8,312 Held-to-maturity U.S. Government agencies — — 390 8,609 390 8,609 Mortgage-backed securities of government agencies 72 3,404 142 3,360 214 6,764 Total temporarily impaired securities $ 262 $ 17,970 $ 1,963 $ 66,251 $ 2,225 $ 84,221 There were 67 securities in an unrealized loss position at March 31, 2019, 62 of which were in a continuous loss position for twelve months or more. At least quarterly, the Company conducts a comprehensive security-level impairment assessment. The assessments are based on the nature of the securities, the extent and duration of the securities in an unrealized loss position, the extent and duration of the loss and management’s intent to sell or if it is more likely than not that management will be required to sell a security before recovery of its amortized cost basis, which may be maturity. Management believes the Company will fully recover the cost of these securities. It does not intend to sell these securities and likely will not be required to sell them before the anticipated recovery of the remaining amortized cost basis, which may be maturity. As a result, management concluded that these securities were not other-than-temporarily impaired at March 31, 2019.

Loans

Loans	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Loans	NOTE 3 – LOANS Loans consist of the following: (Dollars in thousands) March 31, December 31, Commercial $ 144,793 $ 146,875 Commercial real estate 192,663 183,605 Residential real estate 170,303 167,296 Construction & land development 20,792 31,227 Consumer 19,083 19,402 Total loans before deferred costs 547,634 548,405 Deferred loan costs 586 569 Total Loans $ 548,220 $ 548,974 Loan Origination/Risk Management The Company has certain lending policies and procedures in place that are designed to maximize loan income within an acceptable level of risk. Management reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and non-performing Commercial loans are underwritten after evaluating and understanding the borrower’s ability to operate profitably and prudently expand its business. Underwriting standards are designed to promote relationship banking rather than transactional banking. The Company’s management examines current and occasionally projected cash flows to determine the ability of the borrower to repay their obligations as agreed. Commercial loans are primarily made based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers; however, may not be as expected and the collateral securing these loans may fluctuate in value. Most commercial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee; however, some short-term loans may be made on an unsecured basis. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts due from its customers. Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans, in addition to those of real estate loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts and the repayment of these loans is largely dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. Commercial real estate loans may be adversely affected by conditions in the real estate markets or in the general economy. The properties securing the Company’s commercial real estate portfolio are diverse in terms of type. This diversity helps reduce the Company’s exposure to adverse economic events that affect any single industry. Management monitors and evaluates commercial real estate loans based on collateral, geography, and risk grade criteria. In addition, management tracks the level of owner-occupied commercial real estate loans versus non-owner With respect to loans to developers and builders that are secured by non-owner Construction and land development loans often involve the disbursement of substantial funds with repayment substantially dependent on the success of the ultimate project. Sources of repayment for these types of loans may be pre-committed on-site The Company originates consumer loans utilizing a judgmental underwriting process. To monitor and manage consumer loan risk, policies and procedures are developed and modified, as needed, jointly by line and staff personnel. This activity, coupled with relatively small loan amounts that are spread across many individual borrowers, mitigates risk. The Company maintains an independent loan review department that reviews and validates the credit risk program on a periodic basis. Results of these reviews are presented to management. The loan review process complements and reinforces the risk identification and assessment decisions made by lenders and credit personnel, as well as the Company’s policies and procedures. Loans serviced for others approximated $94.5 million and $92.3 million at March 31, 2019 and December 31, 2018, respectively. Concentrations of Credit Nearly all of the Company’s lending activity occurs within the state of Ohio, including the four counties of Holmes, Stark, Tuscarawas and Wayne, as well as other markets. The majority of the Company’s loan portfolio consists of commercial and commercial real estate loans. As of March 31, 2019 and December 31, 2018, there were no concentrations of loans related to any single industry. Allowance for Loan Losses The following tables detail activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2019 and 2018. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. The decrease in the provision for loan losses for the three months ended March 31, 2019 related to commercial loans was primarily due to a recovery related to one loan relationship which contributed to declining historical losses of loans in this category. The decrease in the provision related to construction and land development loans was primarily due to the decrease in loan balances as construction projects were completed and transferred to permanent financing. The increase in the provision for consumer loans was related to increasing charge-offs as well as an increase in historical losses partially offset by lower delinquencies. The increase in the provision for loan losses for the three months ended March 31, 2018 related to commercial loans was primarily due to the increase in substandard loans and the increase in loan volume of loans in this category. The decrease in the provision related to residential real estate loans is due to the decrease of loan delinquencies in this category. Summary of Allowance for Loan Losses (Dollars in thousands) Commercial Commercial Residential Construction & Consumer Unallocated Total Three months ended March 31, 2019 Beginning balance $ 2,178 $ 1,791 $ 1,245 $ 258 $ 306 $ 129 $ 5,907 Provision for loan losses (339 ) 17 (24 ) (88 ) 83 636 285 Charge-offs (5 ) — — — (65 ) (70 ) Recoveries 163 — 1 — 1 165 Net charge-offs 158 — 1 — (64 ) 95 Ending balance $ 1,997 $ 1,808 $ 1,222 $ 170 $ 325 $ 765 $ 6,287 Three months ended March 31, 2018 Beginning balance $ 1,813 $ 1,735 $ 1,273 $ 237 $ 175 $ 371 $ 5,604 Provision for loan losses 257 26 (40 ) 7 23 51 324 Charge-offs (194 ) (62 ) (37 ) — (10 ) (303 ) Recoveries 8 — — — — 8 Net charge-offs (186 ) (62 ) (37 ) — (10 ) (295 ) Ending balance $ 1,884 $ 1,699 $ 1,196 $ 244 $ 188 $ 422 $ 5,633 The following table presents the balance in the allowance for loan losses and the ending loan balances by portfolio class, based on the impairment method as of March 31, 2019 and December 31, 2018: (Dollars in thousands) Commercial Commercial Residential Construction Consumer Unallocated Total March 31, 2019 Allowance for loan losses: Individually evaluated for impairment $ 35 $ 16 $ 1 $ — $ — $ — $ 52 Collectively evaluated for impairment 1,962 1,792 1,221 170 325 765 6,235 Total ending allowance balance $ 1,997 $ 1,808 $ 1,222 $ 170 $ 325 $ 765 $ 6,287 Loans: Loans individually evaluated for impairment $ 1,139 $ 2,186 $ 975 $ — $ 17 $ 4,317 Loans collectively evaluated for impairment 143,654 190,477 169,328 20,792 19,066 543,317 Total ending loans balance $ 144,793 $ 192,663 $ 170,303 $ 20,792 $ 19,083 $ 547,634 December 31, 2018 Allowance for loan losses: Individually evaluated for impairment $ 36 $ 64 $ 1 $ — $ — $ — $ 101 Collectively evaluated for impairment 2,142 1,727 1,244 258 306 129 5,806 Total ending allowance balance $ 2,178 $ 1,791 $ 1,245 $ 258 $ 306 $ 129 $ 5,907 Loans: Loans individually evaluated for impairment $ 419 $ 2,403 $ 1,030 $ — $ — $ 3,852 Loans collectively evaluated for impairment 146,456 181,202 166,266 31,227 19,402 544,553 Total ending loans balance $ 146,875 $ 183,605 $ 167,296 $ 31,227 $ 19,402 $ 548,405 The following table presents loans individually evaluated for impairment by class of loans as of March 31, 2019 and December 31, 2018: (Dollars in thousands) Unpaid Recorded Recorded Total Related March 31, 2019 Commercial $ 1,536 $ 1,107 $ 35 $ 1,142 $ 35 Commercial real estate 2,412 1,985 211 2,196 16 Residential real estate 1,136 710 266 976 1 Consumer 17 17 — 17 — Total impaired loans $ 5,101 $ 3,819 $ 512 $ 4,331 $ 52 December 31, 2018 Commercial $ 815 $ 383 $ 36 $ 419 $ 36 Commercial real estate 2,616 1,976 433 2,409 64 Residential real estate 1,190 763 269 1,032 1 Total impaired loans $ 4,621 $ 3,122 $ 738 $ 3,860 $ 101 The following table presents the average recorded investment in impaired loans and related interest income recognized for the periods indicated. Three months ended March 31, (Dollars in thousands) 2019 2018 Average recorded investment: Commercial $ 861 $ 1,792 Commercial real estate 2,289 4,490 Residential real estate 1,018 1,443 Consumer 3 — Average recorded investment in impaired loans $ 4,171 $ 7,725 Interest income recognized: Commercial $ 13 $ 11 Commercial real estate 3 4 Residential real estate 12 14 Consumer — — Interest income recognized on a cash basis on impaired loans $ 28 $ 29 The following table presents the aging of past due loans and nonaccrual loans as of March 31, 2019 and December 31, 2018 by class of loans: (Dollars in thousands) Current 30 - 59 60 - 89 90 Days + Non-Accrual Total Past Due and Non-Accrual Total Loans March 31, 2019 Commercial $ 144,376 $ 80 $ 41 $ — $ 296 $ 417 $ 144,793 Commercial real estate 190,656 85 — — 1,922 2,007 192,663 Residential real estate 169,122 253 — 73 855 1,181 170,303 Construction & land development 20,792 — — — — — 20,792 Consumer 18,833 190 18 — 42 250 19,083 Total Loans $ 543,779 $ 608 $ 59 $ 73 $ 3,115 $ 3,855 $ 547,634 December 31, 2018 Commercial $ 146,431 $ 253 $ 34 $ — $ 157 $ 444 $ 146,875 Commercial real estate 181,388 86 — — 2,131 2,217 183,605 Residential real estate 165,837 265 213 174 807 1,459 167,296 Construction & land development 31,169 58 — — — 58 31,227 Consumer 18,965 291 86 — 60 437 19,402 Total Loans $ 543,790 $ 953 $ 333 $ 174 $ 3,155 $ 4,615 $ 548,405 Troubled Debt Restructurings All troubled debt restructurings (“TDR’s) are individually evaluated for impairment and a related allowance is recorded, as needed. Loans whose terms have been modified as TDR’s totaled $2.2 million as of March 31, 2019, and $1.5 million as of December 31, 2018, with $17 thousand of specific reserves allocated to those loans at March 31, 2019 and December 31, 2018, respectively. At March 31, 2019, $1.9 million of the loans classified as TDR’s were performing in accordance with their modified terms. Of the remaining $271 thousand, all were in nonaccrual of interest status. Other real estate owned amounted to one property at $99 thousand at March 31, 2019 and December 31, 2018, respectively. Consumer mortgage loans in the process of foreclosure were $56 thousand at March 31, 2019 and $57 thousand at December 31, 2018. Other repossessed assets were $15 thousand at March 31, 2019. There were no other repossessed assets at December 31, 2018. (Dollars in thousands) Number of Pre- Modification Post- For the three months ended March 31, 2019 Consumer 1 $ 17 $ 17 Total Restructured Loans 1 $ 17 $ 17 The loans restructured were modified by changing the monthly payment to interest only and extending the maturity dates. There were no new TDR’s for the three month period ended March 31, 2018. There was one loan in the amount of $200 thousand restructured in 2018 that has subsequently defaulted in the first quarter of 2019. None of the loans restructured in 2017 defaulted in 2018. Credit Quality Indicators 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 commercial loans individually by classifying the loans as to credit risk. This analysis includes commercial loans with an outstanding balance greater than $300 thousand. This analysis is performed on an annual basis. The Company uses the following definitions for risk ratings: Pass Special Mention Substandard Doubtful Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass rated loans. Loans listed as not rated are either less than $300 thousand or are included in groups of homogeneous loans. Based on the most recent analysis performed, the risk category of loans by class is as follows as of March 31, 2019 and December 31, 2018: (Dollars in thousands) Pass Special Substandard Doubtful Not Rated Total March 31, 2019 Commercial $ 121,489 $ 4,730 $ 17,617 $ — $ 957 $ 144,793 Commercial real estate 172,041 5,272 14,027 — 1,323 192,663 Residential real estate 191 — 401 — 169,711 170,303 Construction & land development 17,852 — 121 — 2,819 20,792 Consumer — — 42 — 19,041 19,083 Total $ 311,573 $ 10,002 $ 32,208 $ — $ 193,851 $ 547,634 December 31, 2018 Commercial $ 125,840 $ 5,383 $ 14,775 $ — $ 877 $ 146,875 Commercial real estate 163,261 5,582 13,578 — 1,184 183,605 Residential real estate 194 — 637 — 166,465 167,296 Construction & land development 27,540 — — — 3,687 31,227 Consumer — — 60 — 19,342 19,402 Total $ 316,835 $ 10,965 $ 29,050 $ — $ 191,555 $ 548,405 The following table presents loans that are not rated by class of loans as of March 31, 2019 and December 31, 2019. Nonperforming loans include loans past due 90 days or more and loans on nonaccrual of interest status. (Dollars in thousands) Performing Non-Performing Total March 31, 2019 Commercial $ 957 $ — $ 957 Commercial real estate 1,323 — 1,323 Residential real estate 169,185 526 169,711 Construction & land development 2,819 — 2,819 Consumer 19,041 — 19,041 Total $ 193,325 $ 526 $ 193,851 December 31, 2018 Commercial $ 877 $ — $ 877 Commercial real estate 1,184 — 1,184 Residential real estate 166,122 343 166,465 Construction & land development 3,687 — 3,687 Consumer 19,342 — 19,342 Total $ 191,212 $ 343 $ 191,555

Short-Term Borrowings

Short-Term Borrowings	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Short-Term Borrowings	NOTE 4 – SHORT-TERM BORROWINGS The following table provides additional detail regarding repurchase agreements accounted for as secured borrowings. Remaining Contractual Maturity Overnight and Continuous (Dollars in thousands) March 31, December 31, Securities of U.S. Government Agencies and mortgage-backed securities of government agencies pledged, fair value $ 36,439 $ 37,574 Repurchase agreements 36,324 37,415

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 5 – FAIR VALUE MEASUREMENTS The Company provides disclosures about assets and liabilities carried at fair value. The framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and lowest priority to unobservable inputs. The three broad levels of the fair value hierarchy are described below: Level I: Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access. Level II: Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in inactive markets; inputs other than quoted prices that are observable for the asset or liability; and inputs that are derived principally from or corroborated by observable market data by corroborated or other means. If the asset or liability has a specified (contractual) term, the Level II input must be observable for substantially the full term of the asset or liability. Level III: Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The following table presents the assets reported on the Consolidated Balance Sheets at their fair value on a recurring basis as of March 31, 2019 and December 31, 2018 by level within the fair value hierarchy. No liabilities are carried at fair value. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Equity securities with readily determinable values and U.S. Treasury Notes are valued at the closing price reported on the active market on which the individual securities are traded. Obligations of U.S. government agencies, mortgage-backed securities, asset-backed securities, obligations of states and political subdivisions and corporate bonds are valued at observable market data for similar assets. Equity securities without readily determinable values are carried at amortized cost adjusted for impairment and observable price changes. (Dollars in thousands) Level I Level II Level III Total March 31, 2019 Assets: Securities available-for-sale U.S. Treasury security $ 998 $ — $ — $ 998 U.S. Government agencies — 7,248 — 7,248 Mortgage-backed securities of government agencies — 45,524 — 45,524 Asset-backed securities of government agencies — 996 — 996 State and political subdivisions — 23,319 — 23,319 Corporate bonds — 8,293 — 8,293 Total available-for-sale $ 998 $ 85,380 $ — $ 86,378 Equity securities $ 43 $ — $ 46 $ 89 December 31, 2018 Assets: Securities available-for-sale U.S. Treasury security $ 996 $ — $ — $ 996 U.S. Government agencies — 7,170 — 7,170 Mortgage-backed securities of government agencies — 44,901 — 44,901 Asset-backed securities of government agencies — 1,024 — 1,024 State and political subdivisions — 23,125 — 23,125 Corporate bonds — 8,312 — 8,312 Total available-for-sale $ 996 $ 84,532 $ — $ 85,528 Equity securities $ 37 $ — $ 46 $ 83 The following table presents the assets measured on a nonrecurring basis on the Consolidated Balance Sheets at their fair value as of March 31, 2019 and December 31, 2018, by level within the fair value hierarchy. Impaired loans are written down to fair value through the establishment of specific reserves. Techniques used to value the collateral that secure the impaired loans include: quoted market prices for identical assets classified as Level I inputs; and observable inputs, employed by certified appraisers, for similar assets classified as Level II inputs. In cases where valuation techniques included inputs that are unobservable and are based on estimates and assumptions developed by management based on the best information available under each circumstance, the asset valuation is classified as Level III inputs. (Dollars in thousands) Level I Level II Level III Total March 31, 2019 Assets measured on a nonrecurring basis: Impaired loans $ — $ — $ 459 $ 459 Other real estate owned — — 99 99 December 31, 2018 Assets measured on a nonrecurring basis: Impaired loans $ — $ — $ 636 $ 636 Other real estate owned — — 99 99 The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level III inputs to determine fair value: Quantitative Information about Level III Fair Value Measurements (Dollars in thousands) Fair Value Valuation Unobservable Input Range (Weighted Average) March 31, 2019 Impaired loans $ 459 Discounted cash flow Remaining term Discount rate 11 mos to 26.3 yrs / (14.2 yrs) 5.1% to 7.5% / (5.7%) Other real estate owned 99 Appraisal of collateral (1) Appraisal adjustments (2) Liquidation expense (2) -33% -10% December 31, 2018 Impaired loans $ 636 Discounted cash flow Remaining term Discount rate 1.2 yrs to 26.5 yrs / (10.9 yrs) 5.1% to 7.5% / (5.88%) Other real estate owned 99 Appraisal of collateral (1) Appraisal adjustments (2) Liquidation expense (2) -33% -10% (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various inputs which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.

Fair Values of Financial Instru

Fair Values of Financial Instruments	3 Months Ended
	Mar. 31, 2019
Investments, All Other Investments [Abstract]
Fair Values of Financial Instruments	NOTE 6 – FAIR VALUES OF FINANCIAL INSTRUMENTS The fair values of recognized financial instruments as of March 31, 2019 and December 31, 2018 are as follows: (Dollars in thousands) Carrying Level I Level II Level III Fair Value March 31, 2019 Financial assets Cash and cash equivalents $ 44,243 $ 44,243 $ — $ — $ 44,243 Securities available-for-sale 86,378 998 85,380 — 86,378 Securities held-to-maturity 20,218 — 19,948 — 19,948 Equity securities 89 43 — 46 89 Restricted stock 4,614 N/A N/A N/A N/A Loans held for sale 140 140 — — 140 Net loans 541,933 — — 545,737 545,737 Bank-owned life insurance 16,638 16,638 — — 16,638 Accrued interest receivable 1,915 1,915 — — 1,915 Mortgage servicing rights 290 — — 290 290 Financial liabilities Deposits $ 607,342 $ 486,114 $ — $ 120,051 $ 606,165 Short-term borrowings 36,324 36,324 — — 36,324 Other borrowings 8,373 — — 8,198 8,198 Accrued interest payable 125 125 — — 125 December 31, 2018 Financial assets Cash and cash equivalents $ 45,564 $ 45,564 $ — $ — $ 45,564 Securities available-for-sale 85,528 996 84,532 — 85,528 Securities held-to-maturity 20,688 — 20,118 — 20,118 Equity securities 83 37 — 46 83 Restricted stock 4,614 N/A N/A N/A N/A Loans held for sale 108 108 — — 108 Net loans 543,067 — — 543,076 543,076 Bank-owned life insurance 13,554 13,554 — — 13,554 Accrued interest receivable 1,581 1,581 — — 1,581 Mortgage servicing rights 281 — — 281 281 Financial liabilities Deposits $ 606,498 $ 490,007 $ — $ 114,434 $ 604,441 Short-term borrowings 37,415 37,415 — — 37,415 Other borrowings 8,525 — — 8,251 8,251 Accrued interest payable 88 88 — — 88 The Company also has unrecognized financial instruments at March 31, 2019 and December 31, 2018. These financial instruments relate to commitments to extend credit and letters of credit. The aggregated contract amount of such financial instruments was approximately $174.1 million at March 31, 2019 and $173.3 million at December 31, 2018. Such amounts are also considered to be the fair values. The fair value estimates of financial instruments are made at a specific point in time based on relevant market information. Since no ready market exists for a significant portion of the financial instruments, fair value estimates are largely based on judgments after considering such factors as future expected credit losses, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore, cannot be determined with precision. Changes in assumptions could significantly affect these estimates.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	NOTE 7 – ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following table presents the changes in accumulated other comprehensive income (loss) by component net of tax for the three month period ended March 31, 2019 and 2018: (Dollars in thousands) Pretax Tax Effect After-tax Three months ended March 31, 2019 Balance as of December 31, 2018 $ (1,786 ) $ 374 $ (1,412 ) Unrealized holding gain (loss) on available-for-sale 749 (157 ) 592 Amortization of held-to-maturity 15 (3 ) 12 Total other comprehensive income (loss) 764 (160 ) 604 Balance as of March 31, 2019 $ (1,022 ) $ 214 $ (808 ) Three months ended March 31, 2018 Balance as of December 31, 2017 $ (839 ) $ 176 $ (663 ) Unrealized holding gain (loss) on available-for-sale (1,385 ) 291 (1,094 ) Amortization of held-to-maturity 22 (5 ) 17 Total other comprehensive income (loss) (1,363 ) 286 (1,077 ) Reclassify equity AOCI gain to retained earnings 37 (8 ) 29 Balance as of March 31, 2018 $ (2,165 ) $ 454 $ (1,711 )

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	NOTE 8 – LEASES Operating leases in which the Company is the lessee are recorded as operating lease Right of Use (“ROU”) assets and operating lease liabilities, included in other assets and other liabilities, respectively, on the consolidated balance sheets. The Company does not currently have any finance leases. Operating lease ROU assets represent the right to use an underlying asset during the lease term and operating lease liabilities represent the obligation to make lease payments arising from the lease. The Company elected to adopt the transition method, which uses a modified retrospective transition approach. ROU assets and operating lease liabilities are recognized as of the date of adoption based on the present value of the remaining lease payments using a discount rate that represents the Company’s incremental borrowing rate at the date of initial application. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term, and is recorded in occupancy and equipment expense in the consolidated statements of income and other comprehensive income. The leases relate to bank branches with remaining lease terms of generally 7 to 8 years. Certain lease arrangements contain extension options which are typically 5 years at the then fair market rental rates. As these extension options are generally considered reasonably certain of exercise, they are included in the lease term. As of March 31, 2019, operating lease ROU assets were $464 thousand and lease liabilities were $429 thousand. At March 31, 2019, CSB recognized $18 thousand in operating lease cost. The following table summarizes other information related to our operating leases: March 31, 2019 Weighted-average remaining lease term - operating leases in years 7.5 Weighted-average discount rate - operating leases 3.77 % The following table presents aggregate lease maturities and obligations as of March 31, 2019: (Dollars in thousands) March 31, 2019 2019 $ 27 2020 63 2021 71 2022 71 2023 71 2024 and thereafter 195 Total lease payments 498 Less: interest 69 Present value of lease liabilities $ 429

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Lease	ASU 2016-02 right-of-use The Update and its related amendments were adopted as of January 1, 2019, which resulted in the recognition of operating right-of-use 2018-11
Credit Losses	ASU 2016-13 one-time one-time
Goodwill Impairment	ASU 2017-04
Fair Value Measurement	ASU 2018-13
Intangibles - Goodwill and Other	ASU 2018-15 Internal-Use internal-use internal-use internal-use
Accounting Standards Update 2016-02 [Member]
Lease	ASU 2019-01 . 250-10-50-3

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Summary of Securities Available-for-Sale and Restricted Stock	Securities consist of the following at March 31, 2019 and December 31, 2018: (Dollars in thousands) Amortized Gross Gross Fair value March 31, 2019 Available-for-sale U.S. Treasury security $ 999 $ — $ 1 $ 998 U.S. Government agencies 7,350 — 102 7,248 Mortgage-backed securities of government agencies 45,997 59 532 45,524 Asset-backed securities of government agencies 1,012 — 16 996 State and political subdivisions 23,166 185 32 23,319 Corporate bonds 8,636 2 345 8,293 Total available-for-sale 87,160 246 1,028 86,378 Held-to-maturity U.S. Government agencies 9,483 11 206 9,288 Mortgage-backed securities of government agencies 10,735 71 146 10,660 Total held-to-maturity 20,218 82 352 19,948 Equity securities 53 36 — 89 Restricted stock 4,614 — — 4,614 Total securities $ 112,045 $ 364 $ 1,380 $ 111,029 December 31, 2018 Available-for-sale U.S. Treasury security $ 997 $ — $ 1 $ 996 U.S. Government agencies 7,350 — 180 7,170 Mortgage-backed securities of government agencies 45,744 41 884 44,901 Asset-backed securities of government agencies 1,040 — 16 1,024 State and political subdivisions 23,282 49 206 23,125 Corporate bonds 8,646 — 334 8,312 Total available-for-sale 87,059 90 1,621 85,528 Held-to-maturity U.S. Government agencies 9,482 6 390 9,098 Mortgage-backed securities of government agencies 11,206 28 214 11,020 Total held-to-maturity 20,688 34 604 20,118 Equity securities 53 30 — 83 Restricted stock 4,614 — — 4,614 Total securities $ 112,414 $ 154 $ 2,225 $ 110,343
Summary of Amortized Cost and Fair Value of Debt Securities	The amortized cost and fair value of debt securities at March 31, 2019, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. (Dollars in thousands) Amortized Fair Available-for-sale Due in one year or less $ 3,477 $ 3,480 Due after one through five years 20,264 20,224 Due after five through ten years 22,565 22,374 Due after ten years 40,854 40,300 Total debt securities available-for-sale $ 87,160 $ 86,378 Held-to-maturity Due after one through five years $ 484 $ 495 Due after five through ten years 3,000 2,917 Due after ten years 16,734 16,536 Total debt securities held-to-maturity $ 20,218 $ 19,948
Summary of Gross Unrealized Losses and Fair Value of Available for Sale Securities	The following table presents gross unrealized losses and fair value of securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2019 and December 31, 2018: Securities in a continuous unrealized loss position Less than 12 months 12 months or more Total (Dollars in thousands) Gross Fair Gross Fair Gross Fair March 31, 2019 Available-for-sale U.S. Treasury security $ 1 $ 998 $ — $ — $ 1 $ 998 U.S. Government agencies — — 102 7,248 102 7,248 Mortgage-backed securities of government agencies 1 1,948 531 32,804 532 34,752 Asset-backed securities of government agencies — — 16 996 16 996 State and political subdivisions — — 32 3,302 32 3,302 Corporate bonds 1 574 344 6,717 345 7,291 Held-to-maturity U.S. Government agencies — — 206 8,793 206 8,793 Mortgage-backed securities of government agencies 32 473 114 4,094 146 4,567 Total temporarily impaired securities $ 35 $ 3,993 $ 1,345 $ 63,954 $ 1,380 $ 67,947 December 31, 2018 Available-for-sale U.S. Treasury security $ 1 $ 996 $ — $ — $ 1 $ 996 U.S. Government agencies — — 180 7,170 180 7,170 Mortgage-backed securities of government agencies 33 4,206 851 35,188 884 39,394 Asset-backed securities of government agencies 16 1,024 — — 16 1,024 State and political subdivisions 9 3,326 197 8,626 206 11,952 Corporate bonds 131 5,014 203 3,298 334 8,312 Held-to-maturity U.S. Government agencies — — 390 8,609 390 8,609 Mortgage-backed securities of government agencies 72 3,404 142 3,360 214 6,764 Total temporarily impaired securities $ 262 $ 17,970 $ 1,963 $ 66,251 $ 2,225 $ 84,221

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Summary of Loans	Loans consist of the following: (Dollars in thousands) March 31, December 31, Commercial $ 144,793 $ 146,875 Commercial real estate 192,663 183,605 Residential real estate 170,303 167,296 Construction & land development 20,792 31,227 Consumer 19,083 19,402 Total loans before deferred costs 547,634 548,405 Deferred loan costs 586 569 Total Loans $ 548,220 $ 548,974
Summary of Allowance for Loan Losses	Summary of Allowance for Loan Losses (Dollars in thousands) Commercial Commercial Residential Construction & Consumer Unallocated Total Three months ended March 31, 2019 Beginning balance $ 2,178 $ 1,791 $ 1,245 $ 258 $ 306 $ 129 $ 5,907 Provision for loan losses (339 ) 17 (24 ) (88 ) 83 636 285 Charge-offs (5 ) — — — (65 ) (70 ) Recoveries 163 — 1 — 1 165 Net charge-offs 158 — 1 — (64 ) 95 Ending balance $ 1,997 $ 1,808 $ 1,222 $ 170 $ 325 $ 765 $ 6,287 Three months ended March 31, 2018 Beginning balance $ 1,813 $ 1,735 $ 1,273 $ 237 $ 175 $ 371 $ 5,604 Provision for loan losses 257 26 (40 ) 7 23 51 324 Charge-offs (194 ) (62 ) (37 ) — (10 ) (303 ) Recoveries 8 — — — — 8 Net charge-offs (186 ) (62 ) (37 ) — (10 ) (295 ) Ending balance $ 1,884 $ 1,699 $ 1,196 $ 244 $ 188 $ 422 $ 5,633
Allowances for Loan Losses and Ending Balances by Portfolio Class and Based on Impairment Method	The following table presents the balance in the allowance for loan losses and the ending loan balances by portfolio class, based on the impairment method as of March 31, 2019 and December 31, 2018: (Dollars in thousands) Commercial Commercial Residential Construction Consumer Unallocated Total March 31, 2019 Allowance for loan losses: Individually evaluated for impairment $ 35 $ 16 $ 1 $ — $ — $ — $ 52 Collectively evaluated for impairment 1,962 1,792 1,221 170 325 765 6,235 Total ending allowance balance $ 1,997 $ 1,808 $ 1,222 $ 170 $ 325 $ 765 $ 6,287 Loans: Loans individually evaluated for impairment $ 1,139 $ 2,186 $ 975 $ — $ 17 $ 4,317 Loans collectively evaluated for impairment 143,654 190,477 169,328 20,792 19,066 543,317 Total ending loans balance $ 144,793 $ 192,663 $ 170,303 $ 20,792 $ 19,083 $ 547,634 December 31, 2018 Allowance for loan losses: Individually evaluated for impairment $ 36 $ 64 $ 1 $ — $ — $ — $ 101 Collectively evaluated for impairment 2,142 1,727 1,244 258 306 129 5,806 Total ending allowance balance $ 2,178 $ 1,791 $ 1,245 $ 258 $ 306 $ 129 $ 5,907 Loans: Loans individually evaluated for impairment $ 419 $ 2,403 $ 1,030 $ — $ — $ 3,852 Loans collectively evaluated for impairment 146,456 181,202 166,266 31,227 19,402 544,553 Total ending loans balance $ 146,875 $ 183,605 $ 167,296 $ 31,227 $ 19,402 $ 548,405
Schedule of Impairment by Class of Loans	The following table presents loans individually evaluated for impairment by class of loans as of March 31, 2019 and December 31, 2018: (Dollars in thousands) Unpaid Recorded Recorded Total Related March 31, 2019 Commercial $ 1,536 $ 1,107 $ 35 $ 1,142 $ 35 Commercial real estate 2,412 1,985 211 2,196 16 Residential real estate 1,136 710 266 976 1 Consumer 17 17 — 17 — Total impaired loans $ 5,101 $ 3,819 $ 512 $ 4,331 $ 52 December 31, 2018 Commercial $ 815 $ 383 $ 36 $ 419 $ 36 Commercial real estate 2,616 1,976 433 2,409 64 Residential real estate 1,190 763 269 1,032 1 Total impaired loans $ 4,621 $ 3,122 $ 738 $ 3,860 $ 101
Schedule of Average Recorded Investment in Impaired Loans and Related Interest Income Recognized	The following table presents the average recorded investment in impaired loans and related interest income recognized for the periods indicated. Three months ended March 31, (Dollars in thousands) 2019 2018 Average recorded investment: Commercial $ 861 $ 1,792 Commercial real estate 2,289 4,490 Residential real estate 1,018 1,443 Consumer 3 — Average recorded investment in impaired loans $ 4,171 $ 7,725 Interest income recognized: Commercial $ 13 $ 11 Commercial real estate 3 4 Residential real estate 12 14 Consumer — — Interest income recognized on a cash basis on impaired loans $ 28 $ 29
Schedule of Aging of Past Due and Nonaccrual Loans	The following table presents the aging of past due loans and nonaccrual loans as of March 31, 2019 and December 31, 2018 by class of loans: (Dollars in thousands) Current 30 - 59 60 - 89 90 Days + Non-Accrual Total Past Due and Non-Accrual Total Loans March 31, 2019 Commercial $ 144,376 $ 80 $ 41 $ — $ 296 $ 417 $ 144,793 Commercial real estate 190,656 85 — — 1,922 2,007 192,663 Residential real estate 169,122 253 — 73 855 1,181 170,303 Construction & land development 20,792 — — — — — 20,792 Consumer 18,833 190 18 — 42 250 19,083 Total Loans $ 543,779 $ 608 $ 59 $ 73 $ 3,115 $ 3,855 $ 547,634 December 31, 2018 Commercial $ 146,431 $ 253 $ 34 $ — $ 157 $ 444 $ 146,875 Commercial real estate 181,388 86 — — 2,131 2,217 183,605 Residential real estate 165,837 265 213 174 807 1,459 167,296 Construction & land development 31,169 58 — — — 58 31,227 Consumer 18,965 291 86 — 60 437 19,402 Total Loans $ 543,790 $ 953 $ 333 $ 174 $ 3,155 $ 4,615 $ 548,405
Summary of Troubled Debt Restructurings	Other real estate owned amounted to one property at $99 thousand at March 31, 2019 and December 31, 2018, respectively. Consumer mortgage loans in the process of foreclosure were $56 thousand at March 31, 2019 and $57 thousand at December 31, 2018. Other repossessed assets were $15 thousand at March 31, 2019. There were no other repossessed assets at December 31, 2018. (Dollars in thousands) Number of Pre- Modification Post- For the three months ended March 31, 2019 Consumer 1 $ 17 $ 17 Total Restructured Loans 1 $ 17 $ 17
Summary of Loans by Credit Quality Indicator	Based on the most recent analysis performed, the risk category of loans by class is as follows as of March 31, 2019 and December 31, 2018: (Dollars in thousands) Pass Special Substandard Doubtful Not Rated Total March 31, 2019 Commercial $ 121,489 $ 4,730 $ 17,617 $ — $ 957 $ 144,793 Commercial real estate 172,041 5,272 14,027 — 1,323 192,663 Residential real estate 191 — 401 — 169,711 170,303 Construction & land development 17,852 — 121 — 2,819 20,792 Consumer — — 42 — 19,041 19,083 Total $ 311,573 $ 10,002 $ 32,208 $ — $ 193,851 $ 547,634 December 31, 2018 Commercial $ 125,840 $ 5,383 $ 14,775 $ — $ 877 $ 146,875 Commercial real estate 163,261 5,582 13,578 — 1,184 183,605 Residential real estate 194 — 637 — 166,465 167,296 Construction & land development 27,540 — — — 3,687 31,227 Consumer — — 60 — 19,342 19,402 Total $ 316,835 $ 10,965 $ 29,050 $ — $ 191,555 $ 548,405
Schedule of Loans Not Rated by Class of Loans	The following table presents loans that are not rated by class of loans as of March 31, 2019 and December 31, 2019. Nonperforming loans include loans past due 90 days or more and loans on nonaccrual of interest status. (Dollars in thousands) Performing Non-Performing Total March 31, 2019 Commercial $ 957 $ — $ 957 Commercial real estate 1,323 — 1,323 Residential real estate 169,185 526 169,711 Construction & land development 2,819 — 2,819 Consumer 19,041 — 19,041 Total $ 193,325 $ 526 $ 193,851 December 31, 2018 Commercial $ 877 $ — $ 877 Commercial real estate 1,184 — 1,184 Residential real estate 166,122 343 166,465 Construction & land development 3,687 — 3,687 Consumer 19,342 — 19,342 Total $ 191,212 $ 343 $ 191,555

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Summary of Repurchase Agreements Accounted for as Secured Borrowings	The following table provides additional detail regarding repurchase agreements accounted for as secured borrowings. Remaining Contractual Maturity Overnight and Continuous (Dollars in thousands) March 31, December 31, Securities of U.S. Government Agencies and mortgage-backed securities of government agencies pledged, fair value $ 36,439 $ 37,574 Repurchase agreements 36,324 37,415

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets Measured on Recurring Basis	The following table presents the assets reported on the Consolidated Balance Sheets at their fair value on a recurring basis as of March 31, 2019 and December 31, 2018 by level within the fair value hierarchy. No liabilities are carried at fair value. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Equity securities with readily determinable values and U.S. Treasury Notes are valued at the closing price reported on the active market on which the individual securities are traded. Obligations of U.S. government agencies, mortgage-backed securities, asset-backed securities, obligations of states and political subdivisions and corporate bonds are valued at observable market data for similar assets. Equity securities without readily determinable values are carried at amortized cost adjusted for impairment and observable price changes. (Dollars in thousands) Level I Level II Level III Total March 31, 2019 Assets: Securities available-for-sale U.S. Treasury security $ 998 $ — $ — $ 998 U.S. Government agencies — 7,248 — 7,248 Mortgage-backed securities of government agencies — 45,524 — 45,524 Asset-backed securities of government agencies — 996 — 996 State and political subdivisions — 23,319 — 23,319 Corporate bonds — 8,293 — 8,293 Total available-for-sale $ 998 $ 85,380 $ — $ 86,378 Equity securities $ 43 $ — $ 46 $ 89 December 31, 2018 Assets: Securities available-for-sale U.S. Treasury security $ 996 $ — $ — $ 996 U.S. Government agencies — 7,170 — 7,170 Mortgage-backed securities of government agencies — 44,901 — 44,901 Asset-backed securities of government agencies — 1,024 — 1,024 State and political subdivisions — 23,125 — 23,125 Corporate bonds — 8,312 — 8,312 Total available-for-sale $ 996 $ 84,532 $ — $ 85,528 Equity securities $ 37 $ — $ 46 $ 83
Schedule of Fair Value of Assets Measured on Nonrecurring Basis	The following table presents the assets measured on a nonrecurring basis on the Consolidated Balance Sheets at their fair value as of March 31, 2019 and December 31, 2018, by level within the fair value hierarchy. Impaired loans are written down to fair value through the establishment of specific reserves. Techniques used to value the collateral that secure the impaired loans include: quoted market prices for identical assets classified as Level I inputs; and observable inputs, employed by certified appraisers, for similar assets classified as Level II inputs. In cases where valuation techniques included inputs that are unobservable and are based on estimates and assumptions developed by management based on the best information available under each circumstance, the asset valuation is classified as Level III inputs. (Dollars in thousands) Level I Level II Level III Total March 31, 2019 Assets measured on a nonrecurring basis: Impaired loans $ — $ — $ 459 $ 459 Other real estate owned — — 99 99 December 31, 2018 Assets measured on a nonrecurring basis: Impaired loans $ — $ — $ 636 $ 636 Other real estate owned — — 99 99
Schedule of Quantitative Information of Assets Measured at Fair Value on Nonrecurring Basis	The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level III inputs to determine fair value: Quantitative Information about Level III Fair Value Measurements (Dollars in thousands) Fair Value Valuation Unobservable Input Range (Weighted Average) March 31, 2019 Impaired loans $ 459 Discounted cash flow Remaining term Discount rate 11 mos to 26.3 yrs / (14.2 yrs) 5.1% to 7.5% / (5.7%) Other real estate owned 99 Appraisal of collateral (1) Appraisal adjustments (2) Liquidation expense (2) -33% -10% December 31, 2018 Impaired loans $ 636 Discounted cash flow Remaining term Discount rate 1.2 yrs to 26.5 yrs / (10.9 yrs) 5.1% to 7.5% / (5.88%) Other real estate owned 99 Appraisal of collateral (1) Appraisal adjustments (2) Liquidation expense (2) -33% -10% (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various inputs which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.

Fair Values of Financial Inst_2

Fair Values of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, All Other Investments [Abstract]
Schedule of Estimated Fair Values of Recognized Financial Instruments	The fair values of recognized financial instruments as of March 31, 2019 and December 31, 2018 are as follows: (Dollars in thousands) Carrying Level I Level II Level III Fair Value March 31, 2019 Financial assets Cash and cash equivalents $ 44,243 $ 44,243 $ — $ — $ 44,243 Securities available-for-sale 86,378 998 85,380 — 86,378 Securities held-to-maturity 20,218 — 19,948 — 19,948 Equity securities 89 43 — 46 89 Restricted stock 4,614 N/A N/A N/A N/A Loans held for sale 140 140 — — 140 Net loans 541,933 — — 545,737 545,737 Bank-owned life insurance 16,638 16,638 — — 16,638 Accrued interest receivable 1,915 1,915 — — 1,915 Mortgage servicing rights 290 — — 290 290 Financial liabilities Deposits $ 607,342 $ 486,114 $ — $ 120,051 $ 606,165 Short-term borrowings 36,324 36,324 — — 36,324 Other borrowings 8,373 — — 8,198 8,198 Accrued interest payable 125 125 — — 125 December 31, 2018 Financial assets Cash and cash equivalents $ 45,564 $ 45,564 $ — $ — $ 45,564 Securities available-for-sale 85,528 996 84,532 — 85,528 Securities held-to-maturity 20,688 — 20,118 — 20,118 Equity securities 83 37 — 46 83 Restricted stock 4,614 N/A N/A N/A N/A Loans held for sale 108 108 — — 108 Net loans 543,067 — — 543,076 543,076 Bank-owned life insurance 13,554 13,554 — — 13,554 Accrued interest receivable 1,581 1,581 — — 1,581 Mortgage servicing rights 281 — — 281 281 Financial liabilities Deposits $ 606,498 $ 490,007 $ — $ 114,434 $ 604,441 Short-term borrowings 37,415 37,415 — — 37,415 Other borrowings 8,525 — — 8,251 8,251 Accrued interest payable 88 88 — — 88

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive (Loss) Income by Component Net of Tax	The following table presents the changes in accumulated other comprehensive income (loss) by component net of tax for the three month period ended March 31, 2019 and 2018: (Dollars in thousands) Pretax Tax Effect After-tax Three months ended March 31, 2019 Balance as of December 31, 2018 $ (1,786 ) $ 374 $ (1,412 ) Unrealized holding gain (loss) on available-for-sale 749 (157 ) 592 Amortization of held-to-maturity 15 (3 ) 12 Total other comprehensive income (loss) 764 (160 ) 604 Balance as of March 31, 2019 $ (1,022 ) $ 214 $ (808 ) Three months ended March 31, 2018 Balance as of December 31, 2017 $ (839 ) $ 176 $ (663 ) Unrealized holding gain (loss) on available-for-sale (1,385 ) 291 (1,094 ) Amortization of held-to-maturity 22 (5 ) 17 Total other comprehensive income (loss) (1,363 ) 286 (1,077 ) Reclassify equity AOCI gain to retained earnings 37 (8 ) 29 Balance as of March 31, 2018 $ (2,165 ) $ 454 $ (1,711 )

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Summary of Other Information Related to Operating Leases	The following table summarizes other information related to our operating leases: March 31, 2019 Weighted-average remaining lease term - operating leases in years 7.5 Weighted-average discount rate - operating leases 3.77 %
Schedule of Aggregate Lease Maturities and Obligations	The following table presents aggregate lease maturities and obligations as of March 31, 2019: (Dollars in thousands) March 31, 2019 2019 $ 27 2020 63 2021 71 2022 71 2023 71 2024 and thereafter 195 Total lease payments 498 Less: interest 69 Present value of lease liabilities $ 429

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Operating right of use assets	$ 464
Operating lease liabilities	$ 429
Accounting Standards Update 2016-02 [Member]
Operating right of use assets		$ 477
Operating lease liabilities		$ 469

Securities - Summary of Securit

Securities - Summary of Securities Available-for-Sale and Restricted Stock (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Schedule of Trading Securities and Other Trading Assets [Line Items]
Gross Unrealized Gains, Equity securities	$ 6	$ 4
Fair Value, Equity securities	89		$ 83
Amortized Cost, Available-for-sale	87,160		87,059
Gross Unrealized Gains, Available-for-sale	246		90
Gross Unrealized Losses, Available-for-sale	1,028		1,621
Fair Value, Available-for-sale	86,378		85,528
Amortized Cost, Held to maturity	20,218		20,688
Gross Unrealized Gains, Held to maturity	82		34
Gross Unrealized Losses, Held to maturity	352		604
Fair Value, Held to maturity	19,948		20,118
Amortized Cost	112,045		112,414
Gross Unrealized Gains	364		154
Gross Unrealized Losses	1,380		2,225
Fair Value	111,029		110,343
Equity Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Equity securities	53		53
Gross Unrealized Gains, Equity securities	36		30
Gross Unrealized Losses, Equity securities	0		0
Fair Value, Equity securities	89		83
U.S. Treasury Security [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	999		997
Gross Unrealized Losses, Available-for-sale	1		1
Fair Value, Available-for-sale	998		996
U.S. Government Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	7,350		7,350
Gross Unrealized Losses, Available-for-sale	102		180
Fair Value, Available-for-sale	7,248		7,170
Amortized Cost, Held to maturity	9,483		9,482
Gross Unrealized Gains, Held to maturity	11		6
Gross Unrealized Losses, Held to maturity	206		390
Fair Value, Held to maturity	9,288		9,098
Mortgage-Backed Securities of Government Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	45,997		45,744
Gross Unrealized Gains, Available-for-sale	59		41
Gross Unrealized Losses, Available-for-sale	532		884
Fair Value, Available-for-sale	45,524		44,901
Amortized Cost, Held to maturity	10,735		11,206
Gross Unrealized Gains, Held to maturity	71		28
Gross Unrealized Losses, Held to maturity	146		214
Fair Value, Held to maturity	10,660		11,020
Asset-Backed Securities of Government Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	1,012		1,040
Gross Unrealized Losses, Available-for-sale	16		16
Fair Value, Available-for-sale	996		1,024
State and Political Subdivisions [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	23,166		23,282
Gross Unrealized Gains, Available-for-sale	185		49
Gross Unrealized Losses, Available-for-sale	32		206
Fair Value, Available-for-sale	23,319		23,125
Corporate Bonds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost, Available-for-sale	8,636		8,646
Gross Unrealized Gains, Available-for-sale	2
Gross Unrealized Losses, Available-for-sale	345		334
Fair Value, Available-for-sale	8,293		8,312
Restricted Stock [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	4,614		4,614
Fair Value	$ 4,614		$ 4,614

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost and Fair Value of Debt Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale
Due in one year or less, Amortized Cost	$ 3,477
Due after one through five years, Amortized Cost	20,264
Due after five through ten years, Amortized Cost	22,565
Due after ten years, Amortized Cost	40,854
Total debt securities available-for-sale, Amortized Cost	87,160
Due in one year or less, Fair Value	3,480
Due after one through five years, Fair Value	20,224
Due after five through ten years, Fair Value	22,374
Due after ten years, Fair Value	40,300
Total debt securities available-for-sale, Fair Value	86,378
Held-to-maturity
Due after one through five years, Amortized Cost	484
Due after five through ten years, Amortized Cost	3,000
Due after ten years, Amortized Cost	16,734
Amortized Cost, Held to maturity	20,218	$ 20,688
Due after one through five years, Fair Value	495
Due after five through ten years, Fair Value	2,917
Due after ten years, Fair Value	16,536
Total debt securities held-to-maturity, Fair Value	$ 19,948	$ 20,118

Securities - Additional Informa

Securities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019USD ($)Securities	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Investments, Debt and Equity Securities [Abstract]
Fair value of pledged securities	$ 82,400,000		$ 83,400,000
Restricted stock investment in FHLB stock	4,100,000		4,100,000
Federal Reserve Bank stock	471,000		$ 471,000
Proceeds from sale of available-for-sale securities	$ 0	$ 0
Number of securities in an unrealized loss position, Total | Securities	67
Number of securities in continuous unrealized loss position, 12 months or more | Securities	62

Securities - Summary of Gross U

Securities - Summary of Gross Unrealized Losses and Fair Value of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity, Gross Unrealized Losses, Total	$ 352	$ 604
Gross Unrealized Losses, Total	1,028	1,621
Gross Unrealized Losses, Less Than 12 Months	35	262
Fair Value, Less Than 12 Months	3,993	17,970
Gross Unrealized Losses, 12 Months Or More	1,345	1,963
Fair Value, 12 Months Or More	63,954	66,251
Gross Unrealized Losses, Total	1,380	2,225
Fair Value, Total	67,947	84,221
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity, Gross Unrealized Losses, 12 Months Or More	206	390
Held-to-maturity, Fair Value, 12 Months Or More	8,793	8,609
Held-to-maturity, Gross Unrealized Losses, Total	206	390
Held-to-maturity, Fair Value, Total	8,793	8,609
Gross Unrealized Losses, 12 Months Or More	102	180
Fair Value, 12 Months Or More	7,248	7,170
Gross Unrealized Losses, Total	102	180
Fair Value, Total	7,248	7,170
Mortgage-Backed Securities of Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity, Gross Unrealized Losses, Less Than 12 Months	32	72
Held-to-maturity, Fair Value, Less Than 12 Months	473	3,404
Held-to-maturity, Gross Unrealized Losses, 12 Months Or More	114	142
Held-to-maturity, Fair Value, 12 Months Or More	4,094	3,360
Held-to-maturity, Gross Unrealized Losses, Total	146	214
Held-to-maturity, Fair Value, Total	4,567	6,764
Gross Unrealized Losses, Less Than 12 Months	1	33
Fair Value, Less Than 12 Months	1,948	4,206
Gross Unrealized Losses, 12 Months Or More	531	851
Fair Value, 12 Months Or More	32,804	35,188
Gross Unrealized Losses, Total	532	884
Fair Value, Total	34,752	39,394
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than 12 Months		9
Fair Value, Less Than 12 Months		3,326
Gross Unrealized Losses, 12 Months Or More	32	197
Fair Value, 12 Months Or More	3,302	8,626
Gross Unrealized Losses, Total	32	206
Fair Value, Total	3,302	11,952
U.S. Treasury Security [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than 12 Months	1	1
Fair Value, Less Than 12 Months	998	996
Gross Unrealized Losses, Total	1	1
Fair Value, Total	998	996
Asset-Backed Securities of Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than 12 Months		16
Fair Value, Less Than 12 Months		1,024
Gross Unrealized Losses, 12 Months Or More	16
Fair Value, 12 Months Or More	996
Gross Unrealized Losses, Total	16	16
Fair Value, Total	996	1,024
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than 12 Months	1	131
Fair Value, Less Than 12 Months	574	5,014
Gross Unrealized Losses, 12 Months Or More	344	203
Fair Value, 12 Months Or More	6,717	3,298
Gross Unrealized Losses, Total	345	334
Fair Value, Total	$ 7,291	$ 8,312

Loans - Summary of Loans (Detai

Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	$ 547,634	$ 548,405
Deferred loan costs	586	569
Total Loans	548,220	548,974
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	144,793	146,875
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	192,663	183,605
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	170,303	167,296
Construction & Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	20,792	31,227
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans before deferred costs	$ 19,083	$ 19,402

Loans - Additional Information

Loans - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)PropertyContract	Mar. 31, 2018USD ($)Contract	Dec. 31, 2018USD ($)Contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans serviced for others	$ 94,500,000		$ 92,300,000
Concentrations of loans related to a single industry	0	$ 0
Loans classified as troubled debt restructurings	2,200,000		1,500,000
Reserves allocated to customers whose loan terms are modified in troubled debt restructurings	17,000		17,000
Loans payable in nonaccrual of interest status	271,000
Mortgage loans in process of foreclosure amount	56,000		57,000
Other real estate real estate acquired through foreclosure	99,000		99,000
Other repossessed assets	$ 15,000		$ 0
Number of properties acquired | Property	1
Number of loans restructured | Contract	1	0
Loans restructured, subsequently defaulted | Contract	1		0
Loans restructured, subsequently defaulted	$ 200,000
Outstanding balance of commercial loans classified under credit risk, minimum amount	300,000
Loans listed as not rated under risk category, maximum amount	300,000
Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructurings	$ 1,900,000

Loans - Schedule of Allowances

Loans - Schedule of Allowances for Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 5,907	$ 5,604
Provision for loan losses	285	324
Charge-offs	(70)	(303)
Recoveries	165	8
Net charge-offs	95	(295)
Ending balance	6,287	5,633
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	2,178	1,813
Provision for loan losses	(339)	257
Charge-offs	(5)	(194)
Recoveries	163	8
Net charge-offs	158	(186)
Ending balance	1,997	1,884
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,791	1,735
Provision for loan losses	17	26
Charge-offs		(62)
Net charge-offs		(62)
Ending balance	1,808	1,699
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,245	1,273
Provision for loan losses	(24)	(40)
Charge-offs		(37)
Recoveries	1
Net charge-offs	1	(37)
Ending balance	1,222	1,196
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	258	237
Provision for loan losses	(88)	7
Ending balance	170	244
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	306	175
Provision for loan losses	83	23
Charge-offs	(65)	(10)
Recoveries	1
Net charge-offs	(64)	(10)
Ending balance	325	188
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	129	371
Provision for loan losses	636	51
Ending balance	$ 765	$ 422

Loans - Allowances for Loan Los

Loans - Allowances for Loan Losses and Ending Balances by Portfolio Class and Based on Impairment Method (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	$ 52	$ 101
Allowance for loan losses collectively evaluated for impairment	6,235	5,806
Total ending allowance balance	6,287	5,907	$ 5,633	$ 5,604
Loans individually evaluated for impairment	4,317	3,852
Loans collectively evaluated for impairment	543,317	544,553
Total ending loans balance	547,634	548,405
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	35	36
Allowance for loan losses collectively evaluated for impairment	1,962	2,142
Total ending allowance balance	1,997	2,178	1,884	1,813
Loans individually evaluated for impairment	1,139	419
Loans collectively evaluated for impairment	143,654	146,456
Total ending loans balance	144,793	146,875
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	16	64
Allowance for loan losses collectively evaluated for impairment	1,792	1,727
Total ending allowance balance	1,808	1,791	1,699	1,735
Loans individually evaluated for impairment	2,186	2,403
Loans collectively evaluated for impairment	190,477	181,202
Total ending loans balance	192,663	183,605
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	1	1
Allowance for loan losses collectively evaluated for impairment	1,221	1,244
Total ending allowance balance	1,222	1,245	1,196	1,273
Loans individually evaluated for impairment	975	1,030
Loans collectively evaluated for impairment	169,328	166,266
Total ending loans balance	170,303	167,296
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses collectively evaluated for impairment	170	258
Total ending allowance balance	170	258	244	237
Loans collectively evaluated for impairment	20,792	31,227
Total ending loans balance	20,792	31,227
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses collectively evaluated for impairment	325	306
Total ending allowance balance	325	306	188	175
Loans individually evaluated for impairment	17
Loans collectively evaluated for impairment	19,066	19,402
Total ending loans balance	19,083	19,402
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses collectively evaluated for impairment	765	129
Total ending allowance balance	$ 765	$ 129	$ 422	$ 371

Loans - Schedule of Impairment

Loans - Schedule of Impairment by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 5,101	$ 4,621
Recorded Investment with no Allowance	3,819	3,122
Recorded Investment with Allowance	512	738
Total Recorded Investment	4,331	3,860
Related Allowance	52	101
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,536	815
Recorded Investment with no Allowance	1,107	383
Recorded Investment with Allowance	35	36
Total Recorded Investment	1,142	419
Related Allowance	35	36
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,412	2,616
Recorded Investment with no Allowance	1,985	1,976
Recorded Investment with Allowance	211	433
Total Recorded Investment	2,196	2,409
Related Allowance	16	64
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,136	1,190
Recorded Investment with no Allowance	710	763
Recorded Investment with Allowance	266	269
Total Recorded Investment	976	1,032
Related Allowance	1	$ 1
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	17
Recorded Investment with no Allowance	17
Total Recorded Investment	$ 17

Loans - Schedule of Average Rec

Loans - Schedule of Average Recorded Investment in Impaired Loans and Related Interest Income Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Average recorded investment:
Average recorded investment in impaired loans	$ 4,171	$ 7,725
Interest income recognized:
Interest income recognized on a cash basis on impaired loans	28	29
Commercial [Member]
Average recorded investment:
Average recorded investment in impaired loans	861	1,792
Interest income recognized:
Interest income recognized on a cash basis on impaired loans	13	11
Commercial Real Estate [Member]
Average recorded investment:
Average recorded investment in impaired loans	2,289	4,490
Interest income recognized:
Interest income recognized on a cash basis on impaired loans	3	4
Residential Real Estate [Member]
Average recorded investment:
Average recorded investment in impaired loans	1,018	1,443
Interest income recognized:
Interest income recognized on a cash basis on impaired loans	12	$ 14
Consumer [Member]
Average recorded investment:
Average recorded investment in impaired loans	$ 3

Loans - Schedule of Aging of Pa

Loans - Schedule of Aging of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 543,779	$ 543,790
Non-accrual	3,115	3,155
Total past due and non-accrual	3,855	4,615
Total ending loans balance	547,634	548,405
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	608	953
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	59	333
90 Days Plus Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	73	174
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	144,376	146,431
Non-accrual	296	157
Total past due and non-accrual	417	444
Total ending loans balance	144,793	146,875
Commercial [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	80	253
Commercial [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	41	34
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	190,656	181,388
Non-accrual	1,922	2,131
Total past due and non-accrual	2,007	2,217
Total ending loans balance	192,663	183,605
Commercial Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	85	86
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	169,122	165,837
Non-accrual	855	807
Total past due and non-accrual	1,181	1,459
Total ending loans balance	170,303	167,296
Residential Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	253	265
Residential Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		213
Residential Real Estate [Member] | 90 Days Plus Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	73	174
Construction & Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	20,792	31,169
Total past due and non-accrual		58
Total ending loans balance	20,792	31,227
Construction & Land Development [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		58
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	18,833	18,965
Non-accrual	42	60
Total past due and non-accrual	250	437
Total ending loans balance	19,083	19,402
Consumer [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	190	291
Consumer [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 18	$ 86

Loans - Summary of Troubled Deb

Loans - Summary of Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)Contract	Mar. 31, 2018Contract
Financing Receivable, Modifications [Line Items]
Number of loans restructured | Contract	1	0
Pre-Modification Recorded Investment	$ 17
Post-Modification Recorded Investment	$ 17
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of loans restructured | Contract	1
Pre-Modification Recorded Investment	$ 17
Post-Modification Recorded Investment	$ 17

Loans - Summary of Loans by Cre

Loans - Summary of Loans by Credit Quality Indicator (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 547,634	$ 548,405
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	144,793	146,875
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	192,663	183,605
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	170,303	167,296
Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	20,792	31,227
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	19,083	19,402
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	311,573	316,835
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	121,489	125,840
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	172,041	163,261
Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	191	194
Pass [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	17,852	27,540
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,002	10,965
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,730	5,383
Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,272	5,582
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	32,208	29,050
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	17,617	14,775
Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	14,027	13,578
Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	401	637
Substandard [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	121
Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	42	60
Not Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	193,851	191,555
Not Rated [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	957	877
Not Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,323	1,184
Not Rated [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	169,711	166,465
Not Rated [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,819	3,687
Not Rated [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 19,041	$ 19,342

Loans - Schedule of Loans Not R

Loans - Schedule of Loans Not Rated by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	$ 193,851	$ 191,555
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	957	877
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	1,323	1,184
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	169,711	166,465
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	2,819	3,687
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	19,041	19,342
Performing [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	193,325	191,212
Performing [Member] | Commercial [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	957	877
Performing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	1,323	1,184
Performing [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	169,185	166,122
Performing [Member] | Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	2,819	3,687
Performing [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	19,041	19,342
Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	526	343
Nonperforming [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans not rated by class of loans	$ 526	$ 343

Short-Term Borrowings - Summary

Short-Term Borrowings - Summary of Repurchase Agreements Accounted for as Secured Borrowings (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Short-term Debt [Abstract]
Securities of U.S. Government Agencies and mortgage-backed securities of government agencies pledged, fair value	$ 36,439	$ 37,574
Repurchase agreements	$ 36,324	$ 37,415

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Liabilities carried at fair value	$ 0	$ 0

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value of Assets Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	$ 86,378
Equity Securities	89	$ 83
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	86,378	85,528
Equity Securities	89	83
Fair Value, Measurements, Recurring [Member] | U.S. Treasury Security [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	998	996
Fair Value, Measurements, Recurring [Member] | U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	7,248	7,170
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities of Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	45,524	44,901
Fair Value, Measurements, Recurring [Member] | Asset-Backed Securities of Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	996	1,024
Fair Value, Measurements, Recurring [Member] | State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	23,319	23,125
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	8,293	8,312
Level I [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	998	996
Equity Securities	43	37
Level I [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Treasury Security [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	998	996
Level II [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	85,380	84,532
Level II [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	7,248	7,170
Level II [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities of Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	45,524	44,901
Level II [Member] | Fair Value, Measurements, Recurring [Member] | Asset-Backed Securities of Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	996	1,024
Level II [Member] | Fair Value, Measurements, Recurring [Member] | State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	23,319	23,125
Level II [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	8,293	8,312
Level III [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities	$ 46	$ 46

Fair Value Measurements - Sch_2

Fair Value Measurements - Schedule of Fair Value of Assets Measured on Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	$ 459	$ 636
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	99	99
Level III [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	459	636
Level III [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets	$ 99	$ 99

Fair Value Measurements - Sch_3

Fair Value Measurements - Schedule of Quantitative Information of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Level III [Member] $ in Thousands	Mar. 31, 2019USD ($)yrmo	Dec. 31, 2018USD ($)yr
Valuation Technique, Discounted Cash Flow [Member] | Impaired Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Estimate | $	$ 459	$ 636
Valuation Technique, Discounted Cash Flow [Member] | Minimum [Member] | Impaired Loans [Member] | Measurement Input, Expected Term [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loan, measurement input	11	1.2
Impaired loan, measurement input	11	1.2
Valuation Technique, Discounted Cash Flow [Member] | Minimum [Member] | Impaired Loans [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loan, measurement input	0.051	0.0510
Impaired loan, measurement input	0.051	0.0510
Valuation Technique, Discounted Cash Flow [Member] | Maximum [Member] | Impaired Loans [Member] | Measurement Input, Expected Term [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loan, measurement input	26.3	26.5
Impaired loan, measurement input	26.3	26.5
Valuation Technique, Discounted Cash Flow [Member] | Maximum [Member] | Impaired Loans [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loan, measurement input	0.075	0.0750
Impaired loan, measurement input	0.075	0.0750
Valuation Technique, Discounted Cash Flow [Member] | Weighted Average [Member] | Impaired Loans [Member] | Measurement Input, Expected Term [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loan, measurement input	14.2	10.9
Impaired loan, measurement input	14.2	10.9
Valuation Technique, Discounted Cash Flow [Member] | Weighted Average [Member] | Impaired Loans [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loan, measurement input	0.057	0.0588
Impaired loan, measurement input	0.057	0.0588
Appraisal of Collateral [Member] | Other Real Estate Owned [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Estimate | $	$ 99	$ 99
Impaired loan, measurement input	(0.10)	(0.10)
Impaired loan, measurement input	(0.10)	(0.10)
Appraisal of Collateral [Member] | Weighted Average [Member] | Other Real Estate Owned [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loan, measurement input	(0.33)	(0.33)
Impaired loan, measurement input	(0.33)	(0.33)

Fair Values of Financial Inst_3

Fair Values of Financial Instruments - Schedule of Estimated Fair Values of Recognized Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial assets
Securities available-for-sale	$ 86,378	$ 85,528
Securities held-to-maturity	19,948	20,118
Equity Securities	89	83
Loans held for sale	140	108
Bank-owned life insurance	16,638	13,554
Carrying Value [Member]
Financial assets
Cash and cash equivalents	44,243	45,564
Securities available-for-sale	86,378	85,528
Securities held-to-maturity	20,218	20,688
Equity Securities	89	83
Restricted stock	4,614	4,614
Loans held for sale	140	108
Net loans	541,933	543,067
Bank-owned life insurance	16,638	13,554
Accrued interest receivable	1,915	1,581
Financial liabilities
Deposits	607,342	606,498
Short-term borrowings	36,324	37,415
Other borrowings	8,373	8,525
Accrued interest payable	125	88
Carrying Value [Member] | Mortgage Servicing Rights [Member]
Financial assets
Mortgage servicing rights	290	281
Fair Value [Member]
Financial assets
Cash and cash equivalents	44,243	45,564
Securities available-for-sale	86,378	85,528
Securities held-to-maturity	19,948	20,118
Equity Securities	89	83
Loans held for sale	140	108
Net loans	545,737	543,076
Bank-owned life insurance	16,638	13,554
Accrued interest receivable	1,915	1,581
Financial liabilities
Deposits	606,165	604,441
Short-term borrowings	36,324	37,415
Other borrowings	8,198	8,251
Accrued interest payable	125	88
Fair Value [Member] | Mortgage Servicing Rights [Member]
Financial assets
Mortgage servicing rights	290	281
Fair Value [Member] | Level I [Member]
Financial assets
Cash and cash equivalents	44,243	45,564
Securities available-for-sale	998	996
Equity Securities	43	37
Loans held for sale	140	108
Bank-owned life insurance	16,638	13,554
Accrued interest receivable	1,915	1,581
Financial liabilities
Deposits	486,114	490,007
Short-term borrowings	36,324	37,415
Accrued interest payable	125	88
Fair Value [Member] | Level II [Member]
Financial assets
Securities available-for-sale	85,380	84,532
Securities held-to-maturity	19,948	20,118
Fair Value [Member] | Level III [Member]
Financial assets
Equity Securities	46	46
Net loans	545,737	543,076
Financial liabilities
Deposits	120,051	114,434
Other borrowings	8,198	8,251
Fair Value [Member] | Level III [Member] | Mortgage Servicing Rights [Member]
Financial assets
Mortgage servicing rights	$ 290	$ 281

Fair Values of Financial Inst_4

Fair Values of Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Commitments to extend credit and letters of credit	$ 174.1	$ 173.3

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive (Loss) Income by Component Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized holding gain (loss) on available-for-sale securities arising during the period, Pretax	$ 749	$ (1,312)
Beginning balance, After-tax	(1,412)
Other comprehensive income (loss)	604	(1,019)
Ending Balance, After-tax	(808)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, Pretax	(1,786)	(839)
Unrealized holding gain (loss) on available-for-sale securities arising during the period, Pretax	749	(1,385)
Amortization of held-to-maturity discount resulting from transfer, Pretax	15	22
Total other comprehensive income (loss), Pretax	764	(1,363)
Reclassify equity AOCI gain to retained earnings, Pretax		37
Ending balance, Pretax	(1,022)	(2,165)
Beginning balance, Tax Effect	374	176
Unrealized holding gain (loss) on available-for-sale securities arising during the period, Tax Effect	(157)	291
Amortization of held-to-maturity discount resulting from transfer, Tax Effect	(3)	(5)
Total other comprehensive income (loss), Tax Effect	(160)	286
Reclassify equity AOCI gain to retained earnings, Tax Effect		(8)
Ending Balance, Tax Effect	214	454
Beginning balance, After-tax	(1,412)	(663)
Unrealized holding gain (loss) on available-for-sale securities arising during the period, After-Tax	592	(1,094)
Amortization of held-to-maturity discount resulting from transfer, After-tax	12	17
Other comprehensive income (loss)	604	(1,077)
Reclassify equity AOCI gain to retained earnings, After-tax		29
Ending Balance, After-tax	$ (808)	$ (1,711)

Leases - Additional Information

Leases - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Schedule Of Operating Leases [Line Items]
Weighted-average remaining lease term - operating leases in years	7 years 6 months
Operating lease extension period	5 years
Operating lease right of use asset	$ 464
Operating lease liabilties	429
Operating lease cost	$ 18
Minimum [Member]
Schedule Of Operating Leases [Line Items]
Weighted-average remaining lease term - operating leases in years	7 years
Maximum [Member]
Schedule Of Operating Leases [Line Items]
Weighted-average remaining lease term - operating leases in years	8 years

Leases - Summary of Other Infor

Leases - Summary of Other Information Related to Operating Leases (Detail)	Mar. 31, 2019
Leases [Abstract]
Weighted-average remaining lease term - operating leases in years	7 years 6 months
Weighted-average discount rate - operating leases	3.77%

Leases - Schedule of Aggregate

Leases - Schedule of Aggregate Lease Maturities and Obligations (Detail) $ in Thousands	Mar. 31, 2019USD ($)
Leases [Abstract]
2019	$ 27
2020	63
2021	71
2022	71
2023	71
2024 and thereafter	195
Total lease payments	498
Less: interest	69
Present value of lease liabilities	$ 429