Citizens Holding (CIZN) 10-Q 10 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 07, 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	CIZN
Entity Registrant Name	CITIZENS HOLDING CO /MS/
Entity Central Index Key	0001075706
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		4,912,030
Entity Emerging Growth Company	false
Entity Small Business	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($)	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 12,462,550	$ 12,592,130
Interest bearing deposits with other banks	27,122,108	8,079,742
Investment securities available for sale, at fair value	507,791,195	444,746,454
Loans, net of allowance for loan losses of $3,559,896 in 2019 and $3,371,695 in 2018	443,909,475	425,905,093
Premises and equipment, net	19,556,205	19,717,305
Other real estate owned, net	3,440,148	3,440,148
Accrued interest receivable	4,326,455	4,165,783
Cash surrender value of life insurance	25,532,529	25,383,931
Deferred tax assets, net	4,601,116	6,633,539
Other assets	8,650,695	7,965,952
TOTAL ASSETS	1,057,392,476	958,630,077
Deposits:
Noninterest-bearing demand	171,555,937	170,029,729
Interest-bearing NOW and money market accounts	369,049,299	298,220,430
Savings deposits	77,317,063	76,735,710
Certificates of deposit	222,237,684	211,235,641
Total deposits	840,159,983	756,221,510
Securities sold under agreement to repurchase	115,450,591	107,965,505
Accrued interest payable	650,685	470,710
Deferred compensation payable	9,135,798	9,052,972
Other liabilities	1,416,362	1,053,063
Total liabilities	966,813,419	874,763,760
SHAREHOLDERS' EQUITY
Common stock, $0.20 par value, 22,500,000 shares authorized, 4,904,530 shares issued and outstanding at March 31, 2019 and December 31, 2018	980,906	980,906
Additional paid-in capital	4,339,843	4,298,499
Retained earnings	93,611,199	93,561,515
Accumulated other comprehensive loss, net of tax benefit of $2,776,877 at March 31, 2019 and $4,978,232 at December 31, 2018	(8,352,891)	(14,974,603)
Total shareholders' equity	90,579,057	83,866,317
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,057,392,476	$ 958,630,077

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Loans, allowance for loan losses	$ 3,559,896	$ 3,371,695
Common stock, par value	$ 0.20	$ 0.20
Common stock, shares authorized	22,500,000	22,500,000
Common stock, shares issued	4,904,530	4,904,530
Common stock, shares outstanding	4,904,530	4,904,530
Accumulated other comprehensive loss, tax benefits	$ 2,776,877	$ 4,978,232

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
INTEREST INCOME
Interest and fees on loans	$ 5,449,535	$ 4,716,419
Interest on securities
Taxable	2,082,005	2,204,959
Nontaxable	616,779	617,729
Other interest	235,106	60,284
Total interest income	8,383,425	7,599,391
INTEREST EXPENSE
Deposits	1,728,672	501,209
Other borrowed funds	445,027	293,431
Total interest expense	2,173,699	794,640
NET INTEREST INCOME	6,209,726	6,804,751
PROVISION FOR (REVERSAL OF) LOAN LOSSES	195,479	(236,773)
NET INTEREST INCOME AFTER PROVISION FOR (REVERSAL OF) LOAN LOSSES	6,014,247	7,041,524
OTHER INCOME
Other operating income	266,579	288,373
Total other income	2,046,911	2,100,430
OTHER EXPENSES
Salaries and employee benefits	3,546,669	3,667,857
Occupancy expense	1,422,427	1,525,379
Other expense	1,670,121	1,854,446
Total other expenses	6,639,217	7,047,682
INCOME BEFORE PROVISION FOR INCOME TAXES	1,421,941	2,094,272
PROVISION FOR INCOME TAXES	195,170	321,885
NET INCOME	$ 1,226,771	$ 1,772,387
NET INCOME PER SHARE -Basic	$ 0.25	$ 0.36
NET INCOME PER SHARE -Diluted	0.25	0.36
DIVIDENDS PAID PER SHARE	$ 0.24	$ 0.24
Deposit Account [Member]
OTHER INCOME
Other income	$ 1,096,692	$ 1,143,593
Financial Service, Other [Member]
OTHER INCOME
Other income	$ 683,640	$ 668,464

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 1,226,771	$ 1,772,387
Securities available-for-sale
Unrealized holding gains (losses)	8,823,067	(9,416,226)
Income tax effect	(2,201,355)	2,349,348
Net unrealized (losses) gains	6,621,712	(7,066,878)
Reclassification adjustment for gains included in net income		8,021
Income tax effect		(2,001)
Net gains included in net income		6,020
Total other comprehensive income (loss)	6,621,712	(7,060,858)
Comprehensive income (loss)	$ 7,848,483	$ (5,288,471)

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net cash provided by operating activities	$ 1,978,070	$ 2,567,892
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from maturities and calls of securities available for sale	8,335,984	10,181,801
Proceeds from sale of investment securities		14,752,618
Purchases of investment securities available for sale	(63,402,575)
Purchases of bank premises and equipment	(45,304)	(32,732)
Decrease in interest bearing deposits with other banks	(19,042,366)	(18,592,714)
Proceeds from sale of other real estate		667,253
Net increase in loans	(18,199,861)	(2,929,881)
Net cash (used in) provided by investing activities	(92,354,122)	4,046,345
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	83,938,473	64,941,584
Net change in securities sold under agreement to repurchase	7,485,086	(43,654,076)
Increase in federal funds purchased		(1,500,000)
Repayment of Federal Home Loan Bank advances		(30,000,000)
Payment of dividends	(1,177,087)	(1,174,729)
Net cash used in (provided by) financing activities	90,246,472	(11,387,221)
Net decrease in cash and due from banks	(129,580)	(4,772,984)
Cash and due from banks, beginning of period	12,592,130	17,962,990
Cash and due from banks, end of period	$ 12,462,550	$ 13,190,006

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 Basis of Presentation These interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). However, these interim consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The interim consolidated financial statements are unaudited and reflect all adjustments and reclassifications, which, in the opinion of management, are necessary for a fair presentation of the results of operations and financial condition as of and for the interim periods presented. All adjustments and reclassifications are of a normal and recurring nature. Results for the period ended March 31, 2019 are not necessarily indicative of the results that may be expected for any other interim period or for the year as a whole. The interim consolidated financial statements of Citizens Holding Company (the “Company”) include the accounts of its wholly-owned subsidiary, The Citizens Bank of Philadelphia (the “Bank” and collectively with the Company, the “Corporation”). In addition to full service commercial banking, the Bank offers title insurance services through its subsidiary, Title Services LLC. All significant intercompany transactions have been eliminated in consolidation. For further information and significant accounting policies of the Corporation, see the Notes to Consolidated Financial Statements of Citizens Holding Company included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, filed with the Securities and Exchange Commission on March 15, 2019. Nature of Business The Bank operates under a state bank charter and provides general banking services. As a state bank, the Bank is subject to regulations of the Mississippi Department of Banking and Consumer Finance and the Federal Deposit Insurance Company. The Company is also subject to the regulations of the Federal Reserve. The area served by the Bank is east central and southern counties of Mississippi and the surrounding areas. Services are provided at several branch offices. Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses and the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans. In connection with the determination of the allowance for loan losses and valuation of foreclosed real estate, management obtains independent appraisals for significant properties. While management uses available information to recognize losses on loans and to value foreclosed real estate, future additions to the allowance or adjustments to the valuation may be necessary based on changes in local economic conditions. In addition, regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and valuations of foreclosed real estate. Such agencies may require the Company to recognize additions to the allowance or to make adjustments to the valuation based on their judgments about information available to them at the time of their examination. Due to these factors, it is reasonably possible that the allowance for loan losses and valuation of foreclosed real estate may change materially in the near term. Adoption of New Accounting Standards ASU 2016-02 “Leases” (Topic 842)” (“ASU 2016-02”) requires lessees and lessors recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. ASU 2016-02 was effective for the Company on January 1, 2019. ASU 2016-02 provides for a modified retrospective transition approach requiring lessees to recognize and measure leases on the balance sheet at the beginning of either the earliest period presented or as of the beginning of the period of adoption with the option to elect certain practical expedients. The Company has elected to apply ASU 2016-02 as of the beginning of the period of adoption (January 1, 2019) and have not restated comparative periods. Of the optional practical expedients available under ASU 2016-02, all that apply have been adopted. The Company’s operating leases relate primarily to branch properties and related equipment. As a result of implementing ASU 2016-02, we recognized an operating lease right-of-use (“ROU”) asset of $1.086 million and an operating lease liability of $1.086 million on January 1, 2019, with no impact on our consolidated statements of income or condensed consolidated statement of cash flows compared to the prior lease accounting model. The ROU asset and liability are recorded in other assets and other liabilities, respectively, in the consolidated statements of condition. See Note 8. Premises and Equipment for additional information. Newly Issued, But Not Yet Effective Accounting Standards In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 makes significant changes to the accounting for credit losses on financial instruments and disclosures about them. The new current expected credit loss (CECL) impairment model will require an estimate of expected credit losses, measured over the contractual life of an instrument, which considers reasonable and supportable forecasts of future economic conditions in addition to information about past events and current conditions. The standard provides significant flexibility and requires a high degree of judgment with regards to pooling financial assets with similar risk characteristics, determining the contractual terms of said financial assets and adjusting the relevant historical loss information in order to develop an estimate of expected lifetime losses. In addition, ASU 2016-13 amends the accounting for credit losses on debt securities and purchased financial assets with credit deterioration. The amendments in ASU 2016-13 are effective for fiscal years beginning after December 31, 2019, and interim periods within those years for public business entities that are SEC filers. The Company will adopt ASU 2016-13 on January 1, 2020. Early adoption is permitted for fiscal years, and interim periods within those years, beginning after December 15, 2018, however, the Company does not currently plan to early adopt the ASU. ASU 2016-13 permits the use of estimation techniques that are practical and relevant to the Company’s circumstances, as long as they are applied consistently over time and faithfully estimate expected credit losses in accordance with the standard. The ASU lists several common credit loss methods that are acceptable such as a discounted cash flow method, loss-rate method and probability of default/loss given default (PD/LGD) method. Depending on the nature of each identified pool of financial assets with similar risk characteristics, the Company currently plans on implementing a PD/LGD method or a loss-rate method to estimate expected credit losses. The Company expects ASU 2016-13 to have a significant impact on the Company’s accounting policies, internal controls over financial reporting and footnote disclosures. The Company has assessed its data and system needs and has begun designing its financial models to estimate expected credit losses in accordance with the standard. Further development, testing and evaluation of said models is required to determine the impact that adoption of this standard will have on the financial condition and results of operations of the Company. ASU 2018-13 “ Fair Value Measurement (Topic 820) – Changes in the Disclosure Requirements for Fair Value Measurement ” (“ASU 2018-13”) removes the requirement to disclose the amount of and reasons for transfers between Level 1 and Level 2 fair value measurement methodologies, the policy for timing of transfers between levels and the valuation processes for Level 3 fair value measurements. It also adds a requirement to disclose changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements. For certain unobservable inputs, entities may disclose other quantitative information in lieu of the weighted average if the other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements. ASU 2018-13 is effective for annual and interim periods beginning after December 15, 2019. Management is currently evaluating the impact this ASU will have on the Company’s financial statements.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 2. Commitments and Contingent Liabilities In the ordinary course of business, the Corporation enters into commitments to extend credit to its customers. The unused portion of these commitments is not reflected in the accompanying financial statements. As of March 31, 2019, the Corporation had entered into loan commitments with certain customers with an aggregate unused balance of $61,031,088 compared to an aggregate unused balance of $58,835,208 at December 31, 2018. There were $2,474,810 of letters of credit outstanding at March 31, 2019 and $2,516,810 at December 31, 2018. The fair value of such commitments is not considered material because letters of credit and loan commitments often are not used in their entirety, if at all, before they expire. The balances of such letters and commitments should not be used to project actual future liquidity requirements. However, the Corporation does incorporate expectations about the utilization under its credit-related commitments and into its asset and liability management program. The Corporation is a party to lawsuits and other claims that arise in the ordinary course of business, all of which are being vigorously contested. In the regular course of business, management evaluates estimated losses or costs related to litigation, and provisions are made for anticipated losses whenever management believes that such losses are probable and can be reasonably estimated. At the present time, management believes, based on the advice of legal counsel, that the final resolution of pending legal proceedings will not likely have a material impact on the Corporation’s consolidated financial condition or results of operations.

Net Income per Share

Net Income per Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Net Income per Share	Note 3. Net Income per Share Net income per share - basic has been computed based on the weighted average number of shares outstanding during each period. Net income per share - diluted has been computed based on the weighted average number of shares outstanding during each period plus the dilutive effect of outstanding stock options and restricted stock using the treasury stock method. Net income per share was computed as follows: For the Three Months Ended March 31, 2019 2018 Basic weighted average shares outstanding 4,892,530 4,882,705 Dilutive effect of granted options 2,598 5,802 Diluted weighted average shares outstanding 4,895,128 4,888,507 Net income $ 1,226,771 $ 1,772,387 Net income per share-basic $ 0.25 $ 0.36 Net income per share-diluted $ 0.25 $ 0.36

Equity Compensation Plans

Equity Compensation Plans	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Compensation Plans	Note 4. Equity Compensation Plans The Corporation has adopted the 2013 Incentive Compensation Plan (the “2013 Plan”), which the Corporation intends to use for future equity grants to employees, directors or consultants until the termination or expiration of the 2013 Plan. Prior to the adoption of the 2013 Plan, the Corporation issued awards to directors from the 1999 Directors’ Stock Compensation Plan (the “Directors’ Plan”), which has expired. The following table is a summary of the stock option activity for the three months ended March 31, 2019: Directors’ Plan 2013 Plan Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Outstanding at December 31, 2018 52,500 $ 21.55 — $ — Granted — — — — Exercised — — — — Expired — — — — Outstanding at March 31, 2019 52,500 $ 21.55 — $ — The intrinsic value of options outstanding under the Directors’ Plan at March 31, 2019, was $69,810. No options were outstanding under the 2013 Plan as of March 31, 2019. During 2018, the Corporation’s directors received restricted stock grants totaling 7,500 shares of common stock under the 2013 Plan. These grants vest over a one-year period ending April 25, 2019 during which time the recipients have rights to vote the shares and to receive dividends. The grant date fair value of these shares was $165,375 and will be recognized over the one-year vesting period at a cost of $13,781 per month less deferred taxes of $3,438 per month.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 5. Income Taxes For the three months ended March 31, 2019 and 2018, the Company recorded a provision for income taxes totaling $195 thousand and $322 thousand, respectively. The provision for income taxes includes both federal and state income taxes and differs from the statutory rate due to favorable permanent differences. The effective tax rate was 13.7% and 15.4% for the three months ending March 31, 2019 and 2018, respectively.

Securities

Securities	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Note 6. Securities The amortized cost and estimated fair value of securities available-for-sale and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income were as follows: Gross Gross March 31, 2019 Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 98,911,462 $ — $ 1,606,054 $ 97,305,408 Mortgage backed securities 314,839,147 157,919 7,760,156 307,236,910 State, County, Municipals 105,170,354 220,375 2,141,852 103,248,877 Total $ 518,920,963 $ 378,294 $ 11,508,062 $ 507,791,195 Gross Gross December 31, 2018 Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 99,365,930 $ — $ 3,388,147 $ 95,977,783 Mortgage backed securities 259,742,501 4,921 12,373,269 247,374,153 State, County, Municipals 105,590,858 67,888 4,264,228 101,394,518 Total $ 464,699,289 $ 72,809 $ 20,025,644 $ 444,746,454 At March 31, 2019 and December 31, 2018, securities with a carrying value of $358,290,412 and $357,231,440, respectively, were pledged to secure government and public deposits and securities sold under agreement to repurchase. The amortized cost and estimated fair value of securities by contractual maturity at March 31, 2019 and December 31, 2018 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations. March 31, 2019 December 31, 2018 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 2,639,867 $ 2,642,681 $ 1,875,288 $ 1,877,665 Due after one year through five years 91,046,162 89,695,181 91,948,838 89,121,194 Due after five years through ten years 36,403,442 35,989,164 32,801,788 31,718,293 Due after ten years 73,992,345 72,227,259 78,330,873 74,655,149 Residential mortgage backed securities 245,120,416 239,721,466 187,776,954 179,235,806 Commercial mortgage backed securities 69,718,731 67,515,444 71,965,548 68,138,347 Total $ 518,920,963 $ 507,791,195 $ 464,699,289 $ 444,746,454 The tables below show the Corporation’s gross unrealized losses and fair value of available-for-sale investments, aggregated by investment category and length of time that individual investments were in a continuous loss position at March 31, 2019 and December 31, 2018. A summary of unrealized loss information for securities available-for-sale, categorized by security type follows (in thousands): March 31, 2019 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Description of Securities Value Losses Value Losses Value Losses Obligations of U.S. government agencies $ — $ — $ 97,305,408 $ 1,606,054 $ 97,305,408 $ 1,606,054 Mortgage backed securities 40,619,235 231,534 233,209,022 7,528,622 273,828,257 7,760,156 State, County, Municipal — — 80,467,294 2,141,852 80,467,294 2,141,852 Total $ 40,619,235 $ 231,534 $ 410,981,724 $ 11,276,528 $ 451,600,959 $ 11,508,062 December 31, 2018 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Description of Securities Value Losses Value Losses Value Losses Obligations of U.S. government agencies $ — $ — $ 95,977,783 $ 3,388,147 $ 95,977,783 $ 3,388,147 Mortgage backed securities 12,257,636 179,281 234,928,705 12,193,988 247,186,341 12,373,269 State, County, Municipal 12,623,964 285,275 76,535,741 3,978,953 89,159,705 4,264,228 Total $ 24,881,600 $ 464,556 $ 407,442,229 $ 19,561,088 $ 432,323,829 $ 20,025,644 The Corporation’s unrealized losses on its obligations of United States government agencies, mortgage backed securities and state, county and municipal bonds are the result of an upward trend in interest rates since purchase, mainly in the mid-term sector. None of the unrealized losses disclosed in the previous table are related to credit deterioration. The Corporation does not intend to sell any securities in an unrealized loss position that it holds and it is not more likely than not that the Corporation will be required to sell any such security prior to the recovery of it amortized cost basis, which may be at maturity. Furthermore, even though a number of these securities have been in a continuous unrealized loss position for greater than twelve months, the Corporation is collecting principal and interest payments as scheduled. The Corporation has determined that none of the securities in this classification were other-than-temporarily impaired at March 31, 2019 nor at December 31, 2018.

Loans

Loans	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Loans	Note 7. Loans The composition of net loans (in thousands) at March 31, 2019 and December 31, 2018 was as follows: March 31, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 47,492 $ 41,134 Farmland 17,264 14,498 1-4 Family Mortgages 86,828 88,747 Commercial Real Estate 203,883 203,595 Total Real Estate Loans 355,467 347,974 Business Loans: Commercial and Industrial Loans 77,585 66,421 Farm Production and Other Farm Loans 829 907 Total Business Loans 78,414 67,328 Consumer Loans: Credit Cards 1,603 1,648 Other Consumer Loans 12,015 12,372 Total Consumer Loans 13,618 14,020 Total Gross Loans 447,499 429,322 Unearned Income (30 ) (45 ) Allowance for Loan Losses (3,560 ) (3,372 ) Loans, net $ 443,909 $ 425,905 Loans are considered to be past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are placed on non-accrual status, when, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, as well as when required by regulatory provisions. Loans may be placed on non-accrual status regardless of whether such loans are considered past due. When interest accruals are discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received in excess of principal due. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Period-end, non-accrual loans (in thousands), segregated by class, were as follows: March 31, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 113 $ — Farmland 196 200 1-4 Family Mortgages 1,996 1,831 Commercial Real Estate 7,503 7,612 Total Real Estate Loans 9,808 9,643 Business Loans: Commercial and Industrial Loans 91 76 Farm Production and Other Farm Loans 31 31 Total Business Loans 122 107 Consumer Loans: Other Consumer Loans 88 89 Total Consumer Loans 88 89 Total Nonaccrual Loans $ 10,018 $ 9,839 An aging analysis of past due loans (in thousands), segregated by class, as of March 31, 2019, was as follows: Loans 30-89 Days Past Due Loans 90 or more Days Past Due Total Past Due Loans Current Loans Total Loans Accruing Loans 90 or more Days Past Due Real Estate: Land Development and Construction $ 82 $ 54 $ 136 $ 47,356 $ 47,492 $ — Farmland 438 15 453 16,811 17,264 — 1-4 Family Mortgages 1,945 334 2,279 84,549 86,828 — Commercial Real Estate 773 3,047 3,820 200,063 203,883 10 Total Real Estate Loans 3,238 3,450 6,688 348,779 355,467 10 Business Loans: Commercial and Industrial Loans 1,758 19 1,777 75,808 77,585 — Farm Production and Other Farm Loans 5 — 5 824 829 — Total Business Loans 1,763 19 1,782 76,632 78,414 — Consumer Loans: Credit Cards 31 10 41 1,562 1,603 10 Other Consumer Loans 161 17 178 11,837 12,015 — Total Consumer Loans 192 27 219 13,399 13,618 10 Total Loans $ 5,193 $ 3,496 $ 8,689 $ 438,810 $ 447,499 $ 20 An aging analysis of past due loans (in thousands), segregated by class, as of December 31, 2018 was as follows: Accruing Loans Loans Loans 90 or more 90 or more 30-89 Days Days Total Past Current Total Days Past Due Past Due Due Loans Loans Loans Past Due Real Estate: Land Development and Construction $ 1,494 $ 54 $ 1,548 $ 39,586 $ 41,134 $ 54 Farmland 779 29 808 13,690 14,498 — 1-4 Family Mortgages 3,456 330 3,786 84,961 88,747 — Commercial Real Estate 1,059 2,981 4,040 199,555 203,595 — Total Real Estate Loans 6,788 3,394 10,182 337,792 347,974 54 Business Loans: Commercial and Industrial Loans 1,672 21 1,693 64,728 66,421 — Farm Production and Other Farm Loans 9 — 9 898 907 — Total Business Loans 1,681 21 1,702 65,626 67,328 — Consumer Loans: Credit Cards 16 4 20 1,628 1,648 4 Other Consumer Loans 212 33 245 12,127 12,372 15 Total Consumer Loans 228 37 265 13,755 14,020 19 Total Loans $ 8,697 $ 3,452 $ 12,149 $ 417,173 $ 429,322 $ 73 Loans are considered impaired when, based on current information and events, it is probable the Corporation will be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. In determining which loans to evaluate for impairment, management looks at all loans over $100,000 that are past due loans, bankruptcy filings and any situation that might lend itself to cause a borrower to be unable to repay the loan according to the original agreement terms. If a loan is determined to be impaired and the collateral is deemed to be insufficient to fully repay the loan, a specific reserve will be established. Interest payments on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured, in which case interest is recognized on a cash basis. Impaired loans or portions thereof, are charged-off when deemed uncollectible. Impaired loans (in thousands) as of March 31, 2019, segregated by class, were as follows: Recorded Recorded Unpaid Investment Investment Total Average Principal With No With Recorded Related Recorded Balance Allowance Allowance Investment Allowance Investment Real Estate: Land Development and Construction $ 113 $ 59 $ 54 $ 113 $ 18 $ 56.50 Farmland 266 266 — 266 — 267.50 1-4 Family Mortgages 817 727 90 817 24 985 Commercial Real Estate 10,479 5,113 3,649 8,762 375 8,823 Total Real Estate Loans 11,675 6,165 3,793 9,958 417 10,132 Business Loans: Commercial and Industrial Loans 5 — 5 5 5 3 Total Business Loans 5 — 5 5 5 3 Total Loans $ 11,680 $ 6,165 $ 3,798 $ 9,963 $ 422 $ 10,135 Impaired loans (in thousands) as of December 31, 2018, segregated by class, were as follows: Recorded Recorded Unpaid Investment Investment Total Average Principal With No With Recorded Related Recorded Balance Allowance Allowance Investment Allowance Investment Real Estate: Land Development and Construction $ — $ — $ — $ — $ — $ — Farmland 269 269 — 269 — 135 1-4 Family Mortgages 1,153 1,062 91 1,153 27 728 Commercial Real Estate 10,601 5,209 3,675 8,884 374 6,489 Total Real Estate Loans 12,023 6,540 3,766 10,306 401 7,352 Total Loans $ 12,023 $ 6,540 $ 3,766 $ 10,306 $ 401 $ 7,352 The following table presents troubled debt restructurings (in thousands, except for number of loans), segregated by class: Pre-Modification Post-Modification March 31, 2019 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,748 Total 3 $ 4,871 $ 2,748 Pre-Modification Post-Modification December 31, 2018 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,782 Total 3 $ 4,871 $ 2,782 Changes in the Corporation’s troubled debt restructurings (in thousands, except for number of loans) are set forth in the table below: Number Recorded of Loans Investment Totals at January 1, 2018 3 $ 3,047 Reductions due to: Principal paydowns (265 ) Totals at January 1, 2019 3 $ 2,782 Reductions due to: Principal paydowns (34 ) Total at March 31, 2019 3 $ 2,748 The allocated allowance for loan losses attributable to restructured loans was $174,274 at March 31, 2019 and December 31, 2018. The Corporation had no remaining availability under commitments to lend additional funds on these troubled debt restructurings as of March 31, 2019. The Corporation utilizes a risk grading matrix to assign a risk grade to each of its loans when originated and is updated as factors related to the strength of the loan changes. Loans are graded on a scale of 1 to 9. A description of the general characteristics of the 9 risk grades follows. Grade 1. MINIMAL RISK - These loans are without loss exposure to the Corporation. This classification is reserved for only the best, well secured loans to borrowers with significant capital strength, low leverage, stable earnings and growth and other readily available financing alternatives. This type of loan would also include loans secured by a program of the government. Grade 2. MODEST RISK - These loans include borrowers with solid credit quality and moderate risk of loss. These loans may be fully secured by certificates of deposit with another reputable financial institution, or secured by readily marketable securities with acceptable margins. Grade 3. AVERAGE RISK - This is the rating assigned to the majority of the loans held by the Corporation. This includes loans with average loss exposure and average overall quality. These loans should liquidate through possessing adequate collateral and adequate earnings of the borrower. In addition, these loans are properly documented and are in accordance with all aspects of the current loan policy. Grade 4. ACCEPTABLE RISK - Borrower generates sufficient cash flow to fund debt service but most working asset and capital expansion needs are provided from external sources. Profitability and key balance sheet ratios are usually close to peers but one or more may be higher than peers. Grade 5. MANAGEMENT ATTENTION - Borrower has significant weaknesses resulting from performance trends or management concerns. The financial condition of the borrower has taken a negative turn and may be temporarily strained. Cash flow is weak but cash reserves remain adequate to meet debt service. Management weakness is evident. Grade 6. OTHER LOANS ESPECIALLY MENTIONED (“OLEM”) - Loans in this category are fundamentally sound but possess some weaknesses. OLEM loans have potential weaknesses which may, if not checked or corrected, weaken the asset or inadequately protect the bank’s credit position at some future date. These loans have an identifiable weakness in credit, collateral, or repayment ability but there is no expectation of loss. Grade 7. SUBSTANDARD ASSETS - Assets classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets classified as substandard must have a well-defined weakness based upon objective evidence. Assets classified as substandard are characterized by the distinct possibility that the insured institution will sustain some loss if the deficiencies are not corrected. The possibility that liquidation would not be timely requires a substandard classification even if there is little likelihood of total loss. This classification does not mean that the loan will incur a total or partial loss. Substandard loans may or may not be impaired. Grade 8. DOUBTFUL - A loan classified as doubtful has all the weaknesses of a substandard classification and the added characteristic that the weakness makes collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable or improbable. The possibility of loss is extremely high, but because of certain important and reasonable specific pending factors which may work to the advantage and strengthening of the asset, its classification as an estimated loss is deferred until its more exact status may be determined. A doubtful classification could reflect the fact that the primary source of repayment is gone and serious doubt exists as to the quality of a secondary source of repayment. Grade 9. LOSS - Loans classified as loss are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the asset has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may occur in the future. Also included in this classification is the defined loss portion of loans rated substandard assets and doubtful assets. These internally assigned grades are updated on a continual basis throughout the course of the year and represent management’s most updated judgment regarding grades at March 31, 2019. The following table details the amount of gross loans (in thousands), segregated by loan grade and class, as of March 31, 2019: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 45,746 $ 1,073 $ 673 $ — $ — $ 47,492 Farmland 15,942 346 976 — — 17,264 1-4 Family Mortgages 77,791 1,902 7,120 — 15 86,828 Commercial Real Estate 168,873 21,879 13,131 — — 203,883 Total Real Estate Loans 308,352 25,200 21,900 — 15 355,467 Business Loans: Commercial and Industrial Loans 75,626 225 1,734 — — 77,585 Farm Production and Other Farm Loans 798 — 31 — — 829 Total Business Loans 76,424 225 1,765 — — 78,414 Consumer Loans: Credit Cards 1,562 — 41 — — 1,603 Other Consumer Loans 11,830 62 72 51 — 12,015 Total Consumer Loans 13,392 62 113 51 — 13,618 Total Loans $ 398,168 $ 25,487 $ 23,778 $ 51 $ 15 $ 447,499 The following table details the amount of gross loans (in thousands) segregated by loan grade and class, as of December 31, 2018: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 39,726 $ 840 $ 568 $ — $ — $ 41,134 Farmland 13,248 339 911 — — 14,498 1-4 Family Mortgages 79,659 1,751 7,337 — — 88,747 Commercial Real Estate 172,217 17,938 13,440 — — 203,595 Total Real Estate Loans 304,850 20,868 22,256 — — 347,974 Business Loans: Commercial and Industrial Loans 63,994 81 2,346 — — 66,421 Farm Production and Other Farm Loans 876 — 31 — — 907 Total Business Loans 64,870 81 2,377 — — 67,328 Consumer Loans: Credit Cards 1,628 — 20 — — 1,648 Other Consumer Loans 12,181 65 71 55 — 12,372 Total Consumer Loans 13,809 65 91 55 — 14,020 Total Loans $ 383,529 $ 21,014 $ 24,724 $ 55 $ — $ 429,322 The allowance for loan losses is established through a provision for loan losses charged to expense, which represents management’s best estimate of probable losses within the existing portfolio of loans. The allowance, in the judgment of management, is necessary to reserve for estimated loan losses and risks inherent in the loan portfolio. The allowance on the majority of the loan portfolio is calculated using a historical chargeoff percentage applied to the current loan balances by loan segment. This historical period is the average of the previous twenty quarters with the most current quarters weighted more heavily to show the effect of the most recent chargeoff activity. This percentage is also adjusted for economic factors such as local unemployment and general business conditions, both local and nationwide. The group of loans that are considered to be impaired are individually evaluated for possible loss and a specific reserve is established to cover any loss contingency. Loans that are determined to be a loss with no benefit of remaining in the portfolio are charged off to the allowance. These specific reserves are reviewed periodically for continued impairment and adequacy of the specific reserve and are adjusted when necessary. The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2019: Real Business March 31, 2019 Estate Loans Consumer Total Beginning Balance, January 1, 2019 $ 2,844,681 $ 221,841 $ 305,173 $ 3,371,695 Provision for (reversal of) loan losses (62,733 ) 99,457 158,755 195,479 Chargeoffs — 12,178 24,940 37,118 Recoveries 11,600 4,340 13,900 29,840 Net chargeoffs (recoveries) (11,600 ) 7,838 11,040 7,278 Ending Balance $ 2,793,548 $ 313,460 $ 452,888 $ 3,559,896 Period end allowance allocated to: Loans individually evaluated for impairment $ 417,033 $ 5,084 $ — $ 422,117 Loans collectively evaluated for impairment 2,376,515 308,376 452,888 3,137,779 Ending Balance, March 31, 2019 $ 2,793,548 $ 313,460 $ 452,888 $ 3,559,896 The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2018: Real Business March 31, 2018 Estate Loans Consumer Total Beginning Balance, January 1, 2018 $ 2,151,715 $ 346,781 $ 520,732 $ 3,019,228 (Reversal of) provision for loan losses (65,925 ) (150,889 ) (19,959 ) (236,773 ) Chargeoffs 83,045 15,347 30,845 129,237 Recoveries 45,114 861 26,248 72,223 Net chargeoffs (recoveries) 37,931 14,486 4,597 57,014 Ending Balance $ 2,047,859 $ 181,406 $ 496,176 $ 2,725,441 Period end allowance allocated to: Loans individually evaluated for impairment $ 459,359 $ — $ — $ 459,359 Loans collectively evaluated for impairment 1,588,500 181,406 496,176 2,266,082 Ending Balance, March 31, 2018 $ 2,047,859 $ 181,406 $ 496,176 $ 2,725,441 The Corporation’s recorded investment in loans as of March 31, 2019 and December 31, 2018 related to each balance in the allowance for possible loan losses by portfolio segment and disaggregated on the basis of the Corporation’s impairment methodology was as follows (in thousands): Real Business March 31, 2019 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 9,958 $ 5 $ — $ 9,963 Loans collectively evaluated for general impairment 345,509 78,409 13,618 437,536 $ 355,467 $ 78,414 $ 13,618 $ 447,499 Real Business December 31, 2018 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 10,306 $ — $ — $ 10,306 Loans collectively evaluated for general impairment 337,668 67,328 14,020 419,016 $ 347,974 $ 67,328 $ 14,020 $ 429,322

Premises and Equipment

Premises and Equipment	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Premises and Equipment	Note 8. Premises and Equipment The Company lease certain premises and equipment under operating leases. At March 31, 2019, the Company had lease liabilities and ROU assets totaling $ 1,086 1.6 3.3 Lease costs were as follows: Three Months Ended March 31, 2019 (in thousands) Operating lease cost $ 96 Short-term lease cost 6 Variable lease cost — $ 102 There were no sale and leaseback transactions, leverage leases or lease transactions with related parties during the three months ended March 31, 2019. A maturity analysis of operating lease liabilities and reconciliation of the undiscounted cash flows to the total operating lease liability is as follows: Three Months Ended March 31, 2019 (in thousands) Lease payments due: Within one year $ 362 After one year but within two years 362 After two years but within three years 320 After three year but within four years 76 After four years but within five years 25 After five years — Total undiscounted cash flows 1,145 Discount on cash flows (59 ) Total lease liability $ 1,086

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Shareholders' Equity	Note 9. Shareholders’ Equity The following summarizes the activity in the capital structure of the Company: Number Additional Accumulated Other of Shares Common Paid-In Comprehensive Retained Issued Stock Capital Income (Loss) Earnings Total Balance, January 1, 2019 4,904,530 $ 980,906 $ 4,298,499 $ (14,974,603 ) $ 93,561,515 $ 83,866,317 Net income — — — — 1,226,771 1,226,771 Dividends paid ($0.24 per share) — — — — (1,177,087 ) (1,177,087 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 41,344 — — 41,344 Other comprehensive income, net — — — 6,621,712 — 6,621,712 Balance, March 31, 2019 4,904,530 $ 980,906 $ 4,339,843 $ (8,352,891 ) $ 93,611,199 $ 90,579,057 Accumulated Number Additional Other of Shares Common Paid-In Comprehensive Retained Issued Stock Capital Income (Loss) Earnings Total Balance, January 1, 2018 4,894,705 $ 978,941 $ 4,103,139 $ (8,225,419 ) $ 91,594,379 $ 88,451,040 Net income — — — — 1,772,387 1,772,387 Dividends paid ($0.24​​​​​​​ per share) — — — — (1,174,729 ) (1,174,729 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 45,056 — — 45,056 Other comprehensive income, net — — — (7,068,858 ) — (7,068,858 ) Balance, March 31, 2018 4,894,705 $ 978,941 $ 4,148,195 $ (15,294,277 ) $ 92,192,037 $ 82,024,896

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 10. Fair Value of Financial Instruments The fair value topic of the ASC establishes a framework for measuring fair value and requires enhanced disclosures about fair value measurements. This topic clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. This topic also requires disclosure about how fair value was determined for assets and liabilities and establishes a hierarchy for which these assets and liabilities must be grouped, based on significant levels of inputs as follows: Level 1 Quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 Inputs other than quoted prices in active markets for identical assets and liabilities included in Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in markets that are not active; or Level 3 Unobservable inputs for an asset or liability, such as discounted cash flow models or valuations. The determination of where assets and liabilities fall within this hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following table presents assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2019: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 97,305,408 $ — $ 97,305,408 Mortgage-backed securities — 307,236,910 — 307,236,910 State, county and municipal obligations — 103,248,877 — 103,248,877 Total $ — $ 507,791,195 $ — $ 507,791,195 The following table presents assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2018: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 95,977,783 $ — $ 95,977,783 Mortgage-backed securities — 247,374,153 — 247,374,153 State, county and municipal obligations — 101,394,518 — 101,394,518 Total $ — $ 444,746,454 $ — $ 444,746,454 The following table reports the activity in assets measured at fair value on a recurring basis using significant unobservable inputs: Fair Value Measurements Using: Significant Unobservable Inputs (Level 3) Structured Financial Product As of March 31, 2019 2018 Beginning Balance $ — $ 3,074,227 Principal payments received — — Unrealized (loss) gains included in other comprehensive income — 8,630 Ending Balance $ — $ 3,082,857 The Corporation recorded no gains or losses in earnings for the period ended March 31, 2019 or December 31, 2018 that were attributable to the change in unrealized gains or losses relating to assets still held at the reporting date. Impaired Loans Loans considered impaired are reserved for at the time the loan is identified as impaired taking into account the fair value of the collateral less estimated selling costs. Collateral may be real estate and/or business assets including but not limited to, equipment, inventory and accounts receivable. The fair value of real estate is determined based on appraisals by qualified licensed appraisers. The fair value of the business assets is generally based on amounts reported on the business’s financial statements. Appraised and reported values may be adjusted based on management’s historical knowledge, changes in market conditions from the time of valuation and management knowledge of the client and the client’s business. Since not all valuation inputs are observable, these nonrecurring fair value determinations are classified Level 3. The unobservable inputs may vary depending on the individual assets with the fair value of real estate based on appraised value being the predominant approach. The Company reviews the certified appraisals for appropriateness and adjusts the value downward to consider selling, closing and liquidation costs, which typically approximates 25% of the appraised value. Impaired loans are reviewed and evaluated on at least a quarterly basis for additional impairment and adjusted accordingly, based on the same factors previously identified. Other real estate owned OREO is primarily comprised of real estate acquired in partial or full satisfaction of loans. OREO is recorded at its estimated fair value less estimated selling and closing costs at the date of transfer, with any excess of the related loan balance over the fair value less expected selling costs charged to the ALLL. Subsequent changes in fair value are reported as adjustments to the carrying amount and are recorded against earnings. The Company outsources the valuation of OREO with material balances to third party appraisers. The Company reviews the third-party appraisal for appropriateness and adjusts the value downward to consider selling and closing costs, which typically approximate 25% of the appraised value. For assets measured at fair value on a nonrecurring basis during 2019 that were still held on the Corporation’s balance sheet at March 31, 2019, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 3,376,414 $ 3,376,414 Total $ — $ — $ 3,376,414 $ 3,376,414 The following table presents information as of March 31, 2019 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Financial instrument Fair Value Valuation Technique Significant Unobservable Inputs Range of Inputs Impaired loans $ 3,376,414 Appraised value of collateralless estimated costs to sell Estimated costs to sell 25 % For assets measured at fair value on a nonrecurring basis during 2018 that were still held on the Corporation’s balance sheet at December 31, 2018, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 3,364,538 $ 3,364,538 Other real estate owned — — 188,609 188,609 Total $ — $ — $ 3,553,147 $ 3,553,147 Impaired loans with a carrying value of $3,376,414 and $3,364,538 had an allocated allowance for loan losses of $422,117 and $401,347 at March 31, 2019 and December 31, 2018, respectively. The allocated allowance is based on the carrying value of the impaired loan and the fair value of the underlying collateral less estimated costs to sell. After monitoring the carrying amounts for subsequent declines or impairments after foreclosure, management determined that a fair value adjustment to OREO in the amount of $-0- was necessary and recorded during the three-month period ended March 31, 2019 and the year ended December 31, 2018. The financial instruments topic of the ASC requires disclosure of financial instruments’ fair values, as well as the methodology and significant assumptions used in estimating fair values. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. The financial instruments topic of the ASC excludes certain financial instruments from its disclosure requirements. The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at March 31, 2019: Fair Value Measurements Using: March 31, 2019 Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Fair Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 12,462,550 $ 12,462,550 $ — $ — $ 12,462,550 Interest bearing deposits with banks 27,122,108 27,122,108 — — 27,122,108 Securities available-for-sale 507,791,195 — 507,791,195 — 507,791,195 Net loans 443,909,475 — — 439,516,508 439,516,508 Financial liabilities Deposits $ 840,159,983 $ 617,922,299 $ 223,144,296 $ — $ 841,066,595 Securities Sold under Agreement to Repurchase 115,450,591 115,450,591 — — 115,450,591 The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at December 31, 2018: Fair Value Measurements Using: December 31, 2018 Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Fair Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 12,592,130 $ 12,592,130 $ — $ — $ 12,592,130 Interest bearing deposits with banks 8,079,742 8,079,742 — — 8,079,742 Securities available-for-sale 444,746,454 — 444,746,454 — 444,746,454 Net loans 425,905,093 — — 420,992,074 420,992,074 Financial liabilities Deposits $ 756,221,510 $ 544,985,869 $ 210,477,092 $ — $ 755,462,961 Securities Sold under Agreement to Repurchase 107,965,505 107,965,505 — — 107,965,505

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). However, these interim consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The interim consolidated financial statements are unaudited and reflect all adjustments and reclassifications, which, in the opinion of management, are necessary for a fair presentation of the results of operations and financial condition as of and for the interim periods presented. All adjustments and reclassifications are of a normal and recurring nature. Results for the period ended March 31, 2019 are not necessarily indicative of the results that may be expected for any other interim period or for the year as a whole. The interim consolidated financial statements of Citizens Holding Company (the “Company”) include the accounts of its wholly-owned subsidiary, The Citizens Bank of Philadelphia (the “Bank” and collectively with the Company, the “Corporation”). In addition to full service commercial banking, the Bank offers title insurance services through its subsidiary, Title Services LLC. All significant intercompany transactions have been eliminated in consolidation. For further information and significant accounting policies of the Corporation, see the Notes to Consolidated Financial Statements of Citizens Holding Company included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, filed with the Securities and Exchange Commission on March 15, 2019.
Nature of Business	Nature of Business The Bank operates under a state bank charter and provides general banking services. As a state bank, the Bank is subject to regulations of the Mississippi Department of Banking and Consumer Finance and the Federal Deposit Insurance Company. The Company is also subject to the regulations of the Federal Reserve. The area served by the Bank is east central and southern counties of Mississippi and the surrounding areas. Services are provided at several branch offices.
Estimates	Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses and the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans. In connection with the determination of the allowance for loan losses and valuation of foreclosed real estate, management obtains independent appraisals for significant properties. While management uses available information to recognize losses on loans and to value foreclosed real estate, future additions to the allowance or adjustments to the valuation may be necessary based on changes in local economic conditions. In addition, regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and valuations of foreclosed real estate. Such agencies may require the Company to recognize additions to the allowance or to make adjustments to the valuation based on their judgments about information available to them at the time of their examination. Due to these factors, it is reasonably possible that the allowance for loan losses and valuation of foreclosed real estate may change materially in the near term.
Recently Issued Accounting Pronouncements	Adoption of New Accounting Standards ASU 2016-02 “Leases” (Topic 842)” (“ASU 2016-02”) requires lessees and lessors recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. ASU 2016-02 was effective for the Company on January 1, 2019. ASU 2016-02 provides for a modified retrospective transition approach requiring lessees to recognize and measure leases on the balance sheet at the beginning of either the earliest period presented or as of the beginning of the period of adoption with the option to elect certain practical expedients. The Company has elected to apply ASU 2016-02 as of the beginning of the period of adoption (January 1, 2019) and have not restated comparative periods. Of the optional practical expedients available under ASU 2016-02, all that apply have been adopted. The Company’s operating leases relate primarily to branch properties and related equipment. As a result of implementing ASU 2016-02, we recognized an operating lease right-of-use (“ROU”) asset of $1.086 million and an operating lease liability of $1.086 million on January 1, 2019, with no impact on our consolidated statements of income or condensed consolidated statement of cash flows compared to the prior lease accounting model. The ROU asset and liability are recorded in other assets and other liabilities, respectively, in the consolidated statements of condition. See Note 8. Premises and Equipment for additional information. Newly Issued, But Not Yet Effective Accounting Standards In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 makes significant changes to the accounting for credit losses on financial instruments and disclosures about them. The new current expected credit loss (CECL) impairment model will require an estimate of expected credit losses, measured over the contractual life of an instrument, which considers reasonable and supportable forecasts of future economic conditions in addition to information about past events and current conditions. The standard provides significant flexibility and requires a high degree of judgment with regards to pooling financial assets with similar risk characteristics, determining the contractual terms of said financial assets and adjusting the relevant historical loss information in order to develop an estimate of expected lifetime losses. In addition, ASU 2016-13 amends the accounting for credit losses on debt securities and purchased financial assets with credit deterioration. The amendments in ASU 2016-13 are effective for fiscal years beginning after December 31, 2019, and interim periods within those years for public business entities that are SEC filers. The Company will adopt ASU 2016-13 on January 1, 2020. Early adoption is permitted for fiscal years, and interim periods within those years, beginning after December 15, 2018, however, the Company does not currently plan to early adopt the ASU. ASU 2016-13 permits the use of estimation techniques that are practical and relevant to the Company’s circumstances, as long as they are applied consistently over time and faithfully estimate expected credit losses in accordance with the standard. The ASU lists several common credit loss methods that are acceptable such as a discounted cash flow method, loss-rate method and probability of default/loss given default (PD/LGD) method. Depending on the nature of each identified pool of financial assets with similar risk characteristics, the Company currently plans on implementing a PD/LGD method or a loss-rate method to estimate expected credit losses. The Company expects ASU 2016-13 to have a significant impact on the Company’s accounting policies, internal controls over financial reporting and footnote disclosures. The Company has assessed its data and system needs and has begun designing its financial models to estimate expected credit losses in accordance with the standard. Further development, testing and evaluation of said models is required to determine the impact that adoption of this standard will have on the financial condition and results of operations of the Company. ASU 2018-13 “ Fair Value Measurement (Topic 820) – Changes in the Disclosure Requirements for Fair Value Measurement ” (“ASU 2018-13”) removes the requirement to disclose the amount of and reasons for transfers between Level 1 and Level 2 fair value measurement methodologies, the policy for timing of transfers between levels and the valuation processes for Level 3 fair value measurements. It also adds a requirement to disclose changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 measurements. For certain unobservable inputs, entities may disclose other quantitative information in lieu of the weighted average if the other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements. ASU 2018-13 is effective for annual and interim periods beginning after December 15, 2019. Management is currently evaluating the impact this ASU will have on the Company’s financial statements.

Net Income per Share (Tables)

Net Income per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Net income per share was computed as follows: For the Three Months Ended March 31, 2019 2018 Basic weighted average shares outstanding 4,892,530 4,882,705 Dilutive effect of granted options 2,598 5,802 Diluted weighted average shares outstanding 4,895,128 4,888,507 Net income $ 1,226,771 $ 1,772,387 Net income per share-basic $ 0.25 $ 0.36 Net income per share-diluted $ 0.25 $ 0.36

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity	The following table is a summary of the stock option activity for the three months ended March 31, 2019: Directors’ Plan 2013 Plan Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Outstanding at December 31, 2018 52,500 $ 21.55 — $ — Granted — — — — Exercised — — — — Expired — — — — Outstanding at March 31, 2019 52,500 $ 21.55 — $ —

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Estimated Fair Value of Securities Available-for-Sale	The amortized cost and estimated fair value of securities available-for-sale and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income were as follows: Gross Gross March 31, 2019 Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 98,911,462 $ — $ 1,606,054 $ 97,305,408 Mortgage backed securities 314,839,147 157,919 7,760,156 307,236,910 State, County, Municipals 105,170,354 220,375 2,141,852 103,248,877 Total $ 518,920,963 $ 378,294 $ 11,508,062 $ 507,791,195 Gross Gross December 31, 2018 Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 99,365,930 $ — $ 3,388,147 $ 95,977,783 Mortgage backed securities 259,742,501 4,921 12,373,269 247,374,153 State, County, Municipals 105,590,858 67,888 4,264,228 101,394,518 Total $ 464,699,289 $ 72,809 $ 20,025,644 $ 444,746,454
Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity	The amortized cost and estimated fair value of securities by contractual maturity at March 31, 2019 and December 31, 2018 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations. March 31, 2019 December 31, 2018 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 2,639,867 $ 2,642,681 $ 1,875,288 $ 1,877,665 Due after one year through five years 91,046,162 89,695,181 91,948,838 89,121,194 Due after five years through ten years 36,403,442 35,989,164 32,801,788 31,718,293 Due after ten years 73,992,345 72,227,259 78,330,873 74,655,149 Residential mortgage backed securities 245,120,416 239,721,466 187,776,954 179,235,806 Commercial mortgage backed securities 69,718,731 67,515,444 71,965,548 68,138,347 Total $ 518,920,963 $ 507,791,195 $ 464,699,289 $ 444,746,454
Summary of Unrealized Loss Information for Available-for-sale Securities	A summary of unrealized loss information for securities available-for-sale, categorized by security type follows (in thousands): March 31, 2019 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Description of Securities Value Losses Value Losses Value Losses Obligations of U.S. government agencies $ — $ — $ 97,305,408 $ 1,606,054 $ 97,305,408 $ 1,606,054 Mortgage backed securities 40,619,235 231,534 233,209,022 7,528,622 273,828,257 7,760,156 State, County, Municipal — — 80,467,294 2,141,852 80,467,294 2,141,852 Total $ 40,619,235 $ 231,534 $ 410,981,724 $ 11,276,528 $ 451,600,959 $ 11,508,062 December 31, 2018 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Description of Securities Value Losses Value Losses Value Losses Obligations of U.S. government agencies $ — $ — $ 95,977,783 $ 3,388,147 $ 95,977,783 $ 3,388,147 Mortgage backed securities 12,257,636 179,281 234,928,705 12,193,988 247,186,341 12,373,269 State, County, Municipal 12,623,964 285,275 76,535,741 3,978,953 89,159,705 4,264,228 Total $ 24,881,600 $ 464,556 $ 407,442,229 $ 19,561,088 $ 432,323,829 $ 20,025,644

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Composition of Net Loans	The composition of net loans (in thousands) at March 31, 2019 and December 31, 2018 was as follows: March 31, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 47,492 $ 41,134 Farmland 17,264 14,498 1-4 Family Mortgages 86,828 88,747 Commercial Real Estate 203,883 203,595 Total Real Estate Loans 355,467 347,974 Business Loans: Commercial and Industrial Loans 77,585 66,421 Farm Production and Other Farm Loans 829 907 Total Business Loans 78,414 67,328 Consumer Loans: Credit Cards 1,603 1,648 Other Consumer Loans 12,015 12,372 Total Consumer Loans 13,618 14,020 Total Gross Loans 447,499 429,322 Unearned Income (30 ) (45 ) Allowance for Loan Losses (3,560 ) (3,372 ) Loans, net $ 443,909 $ 425,905
Period-End, Non-Accrual Loans, Segregated by Class	Period-end, non-accrual loans (in thousands), segregated by class, were as follows: March 31, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 113 $ — Farmland 196 200 1-4 Family Mortgages 1,996 1,831 Commercial Real Estate 7,503 7,612 Total Real Estate Loans 9,808 9,643 Business Loans: Commercial and Industrial Loans 91 76 Farm Production and Other Farm Loans 31 31 Total Business Loans 122 107 Consumer Loans: Other Consumer Loans 88 89 Total Consumer Loans 88 89 Total Nonaccrual Loans $ 10,018 $ 9,839
Aging Analysis of Past Due Loans, Segregated by Class	An aging analysis of past due loans (in thousands), segregated by class, as of March 31, 2019, was as follows: Loans 30-89 Days Past Due Loans 90 or more Days Past Due Total Past Due Loans Current Loans Total Loans Accruing Loans 90 or more Days Past Due Real Estate: Land Development and Construction $ 82 $ 54 $ 136 $ 47,356 $ 47,492 $ — Farmland 438 15 453 16,811 17,264 — 1-4 Family Mortgages 1,945 334 2,279 84,549 86,828 — Commercial Real Estate 773 3,047 3,820 200,063 203,883 10 Total Real Estate Loans 3,238 3,450 6,688 348,779 355,467 10 Business Loans: Commercial and Industrial Loans 1,758 19 1,777 75,808 77,585 — Farm Production and Other Farm Loans 5 — 5 824 829 — Total Business Loans 1,763 19 1,782 76,632 78,414 — Consumer Loans: Credit Cards 31 10 41 1,562 1,603 10 Other Consumer Loans 161 17 178 11,837 12,015 — Total Consumer Loans 192 27 219 13,399 13,618 10 Total Loans $ 5,193 $ 3,496 $ 8,689 $ 438,810 $ 447,499 $ 20 An aging analysis of past due loans (in thousands), segregated by class, as of December 31, 2018 was as follows: Accruing Loans Loans Loans 90 or more 90 or more 30-89 Days Days Total Past Current Total Days Past Due Past Due Due Loans Loans Loans Past Due Real Estate: Land Development and Construction $ 1,494 $ 54 $ 1,548 $ 39,586 $ 41,134 $ 54 Farmland 779 29 808 13,690 14,498 — 1-4 Family Mortgages 3,456 330 3,786 84,961 88,747 — Commercial Real Estate 1,059 2,981 4,040 199,555 203,595 — Total Real Estate Loans 6,788 3,394 10,182 337,792 347,974 54 Business Loans: Commercial and Industrial Loans 1,672 21 1,693 64,728 66,421 — Farm Production and Other Farm Loans 9 — 9 898 907 — Total Business Loans 1,681 21 1,702 65,626 67,328 — Consumer Loans: Credit Cards 16 4 20 1,628 1,648 4 Other Consumer Loans 212 33 245 12,127 12,372 15 Total Consumer Loans 228 37 265 13,755 14,020 19 Total Loans $ 8,697 $ 3,452 $ 12,149 $ 417,173 $ 429,322 $ 73
Impaired Loans, Segregated by Class of Loans	Impaired loans (in thousands) as of March 31, 2019, segregated by class, were as follows: Recorded Recorded Unpaid Investment Investment Total Average Principal With No With Recorded Related Recorded Balance Allowance Allowance Investment Allowance Investment Real Estate: Land Development and Construction $ 113 $ 59 $ 54 $ 113 $ 18 $ 56.50 Farmland 266 266 — 266 — 267.50 1-4 Family Mortgages 817 727 90 817 24 985 Commercial Real Estate 10,479 5,113 3,649 8,762 375 8,823 Total Real Estate Loans 11,675 6,165 3,793 9,958 417 10,132 Business Loans: Commercial and Industrial Loans 5 — 5 5 5 3 Total Business Loans 5 — 5 5 5 3 Total Loans $ 11,680 $ 6,165 $ 3,798 $ 9,963 $ 422 $ 10,135 Impaired loans (in thousands) as of December 31, 2018, segregated by class, were as follows: Recorded Recorded Unpaid Investment Investment Total Average Principal With No With Recorded Related Recorded Balance Allowance Allowance Investment Allowance Investment Real Estate: Land Development and Construction $ — $ — $ — $ — $ — $ — Farmland 269 269 — 269 — 135 1-4 Family Mortgages 1,153 1,062 91 1,153 27 728 Commercial Real Estate 10,601 5,209 3,675 8,884 374 6,489 Total Real Estate Loans 12,023 6,540 3,766 10,306 401 7,352 Total Loans $ 12,023 $ 6,540 $ 3,766 $ 10,306 $ 401 $ 7,352
Troubled Debt Restructurings Segregated by Class	The following table presents troubled debt restructurings (in thousands, except for number of loans), segregated by class: Pre-Modification Post-Modification March 31, 2019 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,748 Total 3 $ 4,871 $ 2,748 Pre-Modification Post-Modification December 31, 2018 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,782 Total 3 $ 4,871 $ 2,782
Changes in Troubled Debt Restructurings	Changes in the Corporation’s troubled debt restructurings (in thousands, except for number of loans) are set forth in the table below: Number Recorded of Loans Investment Totals at January 1, 2018 3 $ 3,047 Reductions due to: Principal paydowns (265 ) Totals at January 1, 2019 3 $ 2,782 Reductions due to: Principal paydowns (34 ) Total at March 31, 2019 3 $ 2,748
Detailed Amount of Gross Loans Segregated by Loan Grade and Class	The following table details the amount of gross loans (in thousands), segregated by loan grade and class, as of March 31, 2019: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 45,746 $ 1,073 $ 673 $ — $ — $ 47,492 Farmland 15,942 346 976 — — 17,264 1-4 Family Mortgages 77,791 1,902 7,120 — 15 86,828 Commercial Real Estate 168,873 21,879 13,131 — — 203,883 Total Real Estate Loans 308,352 25,200 21,900 — 15 355,467 Business Loans: Commercial and Industrial Loans 75,626 225 1,734 — — 77,585 Farm Production and Other Farm Loans 798 — 31 — — 829 Total Business Loans 76,424 225 1,765 — — 78,414 Consumer Loans: Credit Cards 1,562 — 41 — — 1,603 Other Consumer Loans 11,830 62 72 51 — 12,015 Total Consumer Loans 13,392 62 113 51 — 13,618 Total Loans $ 398,168 $ 25,487 $ 23,778 $ 51 $ 15 $ 447,499 The following table details the amount of gross loans (in thousands) segregated by loan grade and class, as of December 31, 2018: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 39,726 $ 840 $ 568 $ — $ — $ 41,134 Farmland 13,248 339 911 — — 14,498 1-4 Family Mortgages 79,659 1,751 7,337 — — 88,747 Commercial Real Estate 172,217 17,938 13,440 — — 203,595 Total Real Estate Loans 304,850 20,868 22,256 — — 347,974 Business Loans: Commercial and Industrial Loans 63,994 81 2,346 — — 66,421 Farm Production and Other Farm Loans 876 — 31 — — 907 Total Business Loans 64,870 81 2,377 — — 67,328 Consumer Loans: Credit Cards 1,628 — 20 — — 1,648 Other Consumer Loans 12,181 65 71 55 — 12,372 Total Consumer Loans 13,809 65 91 55 — 14,020 Total Loans $ 383,529 $ 21,014 $ 24,724 $ 55 $ — $ 429,322
Detailed Activity in Allowance for Possible Loan Losses by Portfolio Segment	The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2019: Real Business March 31, 2019 Estate Loans Consumer Total Beginning Balance, January 1, 2019 $ 2,844,681 $ 221,841 $ 305,173 $ 3,371,695 Provision for (reversal of) loan losses (62,733 ) 99,457 158,755 195,479 Chargeoffs — 12,178 24,940 37,118 Recoveries 11,600 4,340 13,900 29,840 Net chargeoffs (recoveries) (11,600 ) 7,838 11,040 7,278 Ending Balance $ 2,793,548 $ 313,460 $ 452,888 $ 3,559,896 Period end allowance allocated to: Loans individually evaluated for impairment $ 417,033 $ 5,084 $ — $ 422,117 Loans collectively evaluated for impairment 2,376,515 308,376 452,888 3,137,779 Ending Balance, March 31, 2019 $ 2,793,548 $ 313,460 $ 452,888 $ 3,559,896 The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2018: Real Business March 31, 2018 Estate Loans Consumer Total Beginning Balance, January 1, 2018 $ 2,151,715 $ 346,781 $ 520,732 $ 3,019,228 (Reversal of) provision for loan losses (65,925 ) (150,889 ) (19,959 ) (236,773 ) Chargeoffs 83,045 15,347 30,845 129,237 Recoveries 45,114 861 26,248 72,223 Net chargeoffs (recoveries) 37,931 14,486 4,597 57,014 Ending Balance $ 2,047,859 $ 181,406 $ 496,176 $ 2,725,441 Period end allowance allocated to: Loans individually evaluated for impairment $ 459,359 $ — $ — $ 459,359 Loans collectively evaluated for impairment 1,588,500 181,406 496,176 2,266,082 Ending Balance, March 31, 2018 $ 2,047,859 $ 181,406 $ 496,176 $ 2,725,441
Recorded Investment in Loans Related to Balance in Allowance for Possible Loan Losses by Portfolio Segment	The Corporation’s recorded investment in loans as of March 31, 2019 and December 31, 2018 related to each balance in the allowance for possible loan losses by portfolio segment and disaggregated on the basis of the Corporation’s impairment methodology was as follows (in thousands): Real Business March 31, 2019 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 9,958 $ 5 $ — $ 9,963 Loans collectively evaluated for general impairment 345,509 78,409 13,618 437,536 $ 355,467 $ 78,414 $ 13,618 $ 447,499 Real Business December 31, 2018 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 10,306 $ — $ — $ 10,306 Loans collectively evaluated for general impairment 337,668 67,328 14,020 419,016 $ 347,974 $ 67,328 $ 14,020 $ 429,322

Premises and Equipment (Tables)

Premises and Equipment (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Summary Of Lease Costs	Lease costs were as follows: Three Months Ended March 31, 2019 (in thousands) Operating lease cost $ 96 Short-term lease cost 6 Variable lease cost — $ 102
Maturity Analysis Of Operating Lease Liabilities	A maturity analysis of operating lease liabilities and reconciliation of the undiscounted cash flows to the total operating lease liability is as follows: Three Months Ended March 31, 2019 (in thousands) Lease payments due: Within one year $ 362 After one year but within two years 362 After two years but within three years 320 After three year but within four years 76 After four years but within five years 25 After five years — Total undiscounted cash flows 1,145 Discount on cash flows (59 ) Total lease liability $ 1,086

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Summary of Capital Structure Activity [Table Text Block]	The following summarizes the activity in the capital structure of the Company: Number Additional Accumulated Other of Shares Common Paid-In Comprehensive Retained Issued Stock Capital Income (Loss) Earnings Total Balance, January 1, 2019 4,904,530 $ 980,906 $ 4,298,499 $ (14,974,603 ) $ 93,561,515 $ 83,866,317 Net income — — — — 1,226,771 1,226,771 Dividends paid ($0.24 per share) — — — — (1,177,087 ) (1,177,087 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 41,344 — — 41,344 Other comprehensive income, net — — — 6,621,712 — 6,621,712 Balance, March 31, 2019 4,904,530 $ 980,906 $ 4,339,843 $ (8,352,891 ) $ 93,611,199 $ 90,579,057 Accumulated Number Additional Other of Shares Common Paid-In Comprehensive Retained Issued Stock Capital Income (Loss) Earnings Total Balance, January 1, 2018 4,894,705 $ 978,941 $ 4,103,139 $ (8,225,419 ) $ 91,594,379 $ 88,451,040 Net income — — — — 1,772,387 1,772,387 Dividends paid ($0.24​​​​​​​ per share) — — — — (1,174,729 ) (1,174,729 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 45,056 — — 45,056 Other comprehensive income, net — — — (7,068,858 ) — (7,068,858 ) Balance, March 31, 2018 4,894,705 $ 978,941 $ 4,148,195 $ (15,294,277 ) $ 92,192,037 $ 82,024,896

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table presents assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2019: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 97,305,408 $ — $ 97,305,408 Mortgage-backed securities — 307,236,910 — 307,236,910 State, county and municipal obligations — 103,248,877 — 103,248,877 Total $ — $ 507,791,195 $ — $ 507,791,195 The following table presents assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2018: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 95,977,783 $ — $ 95,977,783 Mortgage-backed securities — 247,374,153 — 247,374,153 State, county and municipal obligations — 101,394,518 — 101,394,518 Total $ — $ 444,746,454 $ — $ 444,746,454
Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs	The following table reports the activity in assets measured at fair value on a recurring basis using significant unobservable inputs: Fair Value Measurements Using: Significant Unobservable Inputs (Level 3) Structured Financial Product As of March 31, 2019 2018 Beginning Balance $ — $ 3,074,227 Principal payments received — — Unrealized (loss) gains included in other comprehensive income — 8,630 Ending Balance $ — $ 3,082,857
Asset Measured at Fair Value on Nonrecurring Basis	For assets measured at fair value on a nonrecurring basis during 2019 that were still held on the Corporation’s balance sheet at March 31, 2019, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 3,376,414 $ 3,376,414 Total $ — $ — $ 3,376,414 $ 3,376,414 For assets measured at fair value on a nonrecurring basis during 2018 that were still held on the Corporation’s balance sheet at December 31, 2018, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 3,364,538 $ 3,364,538 Other real estate owned — — 188,609 188,609 Total $ — $ — $ 3,553,147 $ 3,553,147
Carrying Value and Estimated Fair Value of Financial Instruments	The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at March 31, 2019: Fair Value Measurements Using: March 31, 2019 Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Fair Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 12,462,550 $ 12,462,550 $ — $ — $ 12,462,550 Interest bearing deposits with banks 27,122,108 27,122,108 — — 27,122,108 Securities available-for-sale 507,791,195 — 507,791,195 — 507,791,195 Net loans 443,909,475 — — 439,516,508 439,516,508 Financial liabilities Deposits $ 840,159,983 $ 617,922,299 $ 223,144,296 $ — $ 841,066,595 Securities Sold under Agreement to Repurchase 115,450,591 115,450,591 — — 115,450,591 The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at December 31, 2018: Fair Value Measurements Using: December 31, 2018 Carrying Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Fair Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 12,592,130 $ 12,592,130 $ — $ — $ 12,592,130 Interest bearing deposits with banks 8,079,742 8,079,742 — — 8,079,742 Securities available-for-sale 444,746,454 — 444,746,454 — 444,746,454 Net loans 425,905,093 — — 420,992,074 420,992,074 Financial liabilities Deposits $ 756,221,510 $ 544,985,869 $ 210,477,092 $ — $ 755,462,961 Securities Sold under Agreement to Repurchase 107,965,505 107,965,505 — — 107,965,505
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Significant Unobservable Inputs (Level 3) Used in Valuation of Assets and Liabilities Measured at Fair Value	The following table presents information as of March 31, 2019 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Financial instrument Fair Value Valuation Technique Significant Unobservable Inputs Range of Inputs Impaired loans $ 3,376,414 Appraised value of collateralless estimated costs to sell Estimated costs to sell 25 %

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
Operating lease liability	$ 1,086
Operating lease right-of-use ("ROU")	$ 1,086,000
ASU 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease liability		$ 1,086
Operating lease right-of-use ("ROU")		$ 1,086

Commitments and Contingent Li_2

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Loan commitments	$ 61,031,088	$ 58,835,208
Letters of credit outstanding	$ 2,474,810	$ 2,516,810

Net Income per Share - Earnings

Net Income per Share - Earnings Per Share (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	4,892,530	4,882,705
Dilutive effect of granted options	2,598	5,802
Diluted weighted average shares outstanding	4,895,128	4,888,507
Net income	$ 1,226,771	$ 1,772,387
Net income per share-basic	$ 0.25	$ 0.36
Net income per share-diluted	$ 0.25	$ 0.36

Equity Compensation Plans -Summ

Equity Compensation Plans -Summary of Stock Option Activity (Detail)	3 Months Ended
	Mar. 31, 2019$ / sharesshares
2013 Plan [Member]
Number of Options
Beginning Balance | shares	0
Granted | shares	0
Exercised | shares	0
Expired | shares	0
Ending Balance | shares	0
Weighted Average Exercise Price
Beginning Balance | $ / shares	$ 0
Granted | $ / shares	0
Exercised | $ / shares	0
Expired | $ / shares	0
Ending Balance | $ / shares	$ 0
Directors Stock Option Plan [Member]
Number of Options
Beginning Balance | shares	52,500
Granted | shares	0
Exercised | shares	0
Expired | shares	0
Ending Balance | shares	52,500
Weighted Average Exercise Price
Beginning Balance | $ / shares	$ 21.55
Granted | $ / shares	0
Exercised | $ / shares	0
Expired | $ / shares	0
Ending Balance | $ / shares	$ 21.55

Equity Compensation Plans - Add

Equity Compensation Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options outstanding		$ 0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock restriction period	1 year
Restricted stock grants	7,500
Restricted stock grant date fair value	$ 165,375
Restricted stock cost	13,781
Restricted stock, deferred taxes	$ 3,438
Directors Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options outstanding		69,810
2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options outstanding		$ 0

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 195,170	$ 321,885
Effective tax rate	13.70%	15.40%

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Securities Available-for-Sale (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 518,920,963	$ 464,699,289
Gross Unrealized Gains	378,294	72,809
Gross Unrealized Losses	11,508,062	20,025,644
Estimated Fair Value	507,791,195	444,746,454
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	98,911,462	99,365,930
Gross Unrealized Losses	1,606,054	3,388,147
Estimated Fair Value	97,305,408	95,977,783
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	314,839,147	259,742,501
Gross Unrealized Gains	157,919	4,921
Gross Unrealized Losses	7,760,156	12,373,269
Estimated Fair Value	307,236,910	247,374,153
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	105,170,354	105,590,858
Gross Unrealized Gains	220,375	67,888
Gross Unrealized Losses	2,141,852	4,264,228
Estimated Fair Value	$ 103,248,877	$ 101,394,518

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Investment [Line Items]
Securities at carrying value	$ 358,290,412	$ 357,231,440

Securities - Amortized Cost a_2

Securities - Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale, Amortized Cost
Due in one year or less	$ 2,639,867	$ 1,875,288
Due after one year through five years	91,046,162	91,948,838
Due after five years through ten years	36,403,442	32,801,788
Due after ten years	73,992,345	78,330,873
Total Amortized Cost	518,920,963	464,699,289
Available-for-sale, Estimated Fair Value
Due in one year or less	2,642,681	1,877,665
Due after one year through five years	89,695,181	89,121,194
Due after five years through ten years	35,989,164	31,718,293
Due after ten years	72,227,259	74,655,149
Total Fair Value	507,791,195	444,746,454
Residential Mortgage Backed Securities [Member]
Available-for-sale, Amortized Cost
Total Amortized Cost	245,120,416	187,776,954
Available-for-sale, Estimated Fair Value
Total Fair Value	239,721,466	179,235,806
Commercial Mortgage Backed Securities [Member]
Available-for-sale, Amortized Cost
Total Amortized Cost	69,718,731	71,965,548
Available-for-sale, Estimated Fair Value
Total Fair Value	$ 67,515,444	$ 68,138,347

Securities - Summary of Unreali

Securities - Summary of Unrealized Loss Information for Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 40,619,235	$ 24,881,600
Less than 12 months Unrealized Losses	231,534	464,556
12 months or more Fair Value	410,981,724	407,442,229
12 months or more Unrealized Losses	11,276,528	19,561,088
Total Fair Value	451,600,959	432,323,829
Total Unrealized Losses	11,508,062	20,025,644
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
12 months or more Fair Value	97,305,408	95,977,783
12 months or more Unrealized Losses	1,606,054	3,388,147
Total Fair Value	97,305,408	95,977,783
Total Unrealized Losses	1,606,054	3,388,147
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	40,619,235	12,257,636
Less than 12 months Unrealized Losses	231,534	179,281
12 months or more Fair Value	233,209,022	234,928,705
12 months or more Unrealized Losses	7,528,622	12,193,988
Total Fair Value	273,828,257	247,186,341
Total Unrealized Losses	7,760,156	12,373,269
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value		12,623,964
Less than 12 months Unrealized Losses		285,275
12 months or more Fair Value	80,467,294	76,535,741
12 months or more Unrealized Losses	2,141,852	3,978,953
Total Fair Value	80,467,294	89,159,705
Total Unrealized Losses	$ 2,141,852	$ 4,264,228

Loans - Composition of Net Loan

Loans - Composition of Net Loans (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	$ 447,499,000	$ 429,322,000
Unearned Income	(30,000)	(45,000)
Allowance for Loan Losses	(3,559,896)	(3,371,695)	$ (2,725,441)	$ (3,019,228)
Loans, net	443,909,475	425,905,093
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	355,467,000	347,974,000
Total Gross Loans	355,467,000	347,974,000
Allowance for Loan Losses	(2,793,548)	(2,844,681)	(2,047,859)	(2,151,715)
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	47,492,000	41,134,000
Total Gross Loans	47,492,000	41,134,000
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	17,264,000	14,498,000
Total Gross Loans	17,264,000	14,498,000
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	86,828,000	88,747,000
Total Gross Loans	86,828,000	88,747,000
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	203,883,000	203,595,000
Total Gross Loans	203,883,000	203,595,000
Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	78,414,000	67,328,000
Total Gross Loans	78,414,000	67,328,000
Allowance for Loan Losses	(313,460)	(221,841)	(181,406)	(346,781)
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	77,585,000	66,421,000
Total Gross Loans	77,585,000	66,421,000
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	829,000	907,000
Total Gross Loans	829,000	907,000
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	13,618,000	14,020,000
Allowance for Loan Losses	(452,888)	(305,173)	$ (496,176)	$ (520,732)
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	1,603,000	1,648,000
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	$ 12,015,000	$ 12,372,000

Loans - Period-End Non-Accrual

Loans - Period-End Non-Accrual Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 10,018	$ 9,839
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	9,808	9,643
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	113
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	196	200
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	1,996	1,831
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	7,503	7,612
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	122	107
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	31	31
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	91	76
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	88	89
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 88	$ 89

Loans - Aging Analysis of Past

Loans - Aging Analysis of Past Due Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	$ 5,193	$ 8,697
Total Past Due Loans	8,689	12,149
Current Loans	438,810	417,173
Total Gross Loans	447,499	429,322
Accruing Loans 90 or more Days Past Due	20	73
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	3,238	6,788
Total Past Due Loans	6,688	10,182
Current Loans	348,779	337,792
Total Gross Loans	355,467	347,974
Accruing Loans 90 or more Days Past Due	10	54
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	82	1,494
Total Past Due Loans	136	1,548
Current Loans	47,356	39,586
Total Gross Loans	47,492	41,134
Accruing Loans 90 or more Days Past Due		54
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	438	779
Total Past Due Loans	453	808
Current Loans	16,811	13,690
Total Gross Loans	17,264	14,498
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	1,945	3,456
Total Past Due Loans	2,279	3,786
Current Loans	84,549	84,961
Total Gross Loans	86,828	88,747
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	773	1,059
Total Past Due Loans	3,820	4,040
Current Loans	200,063	199,555
Total Gross Loans	203,883	203,595
Accruing Loans 90 or more Days Past Due	10
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	1,763	1,681
Total Past Due Loans	1,782	1,702
Current Loans	76,632	65,626
Total Gross Loans	78,414	67,328
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	1,758	1,672
Total Past Due Loans	1,777	1,693
Current Loans	75,808	64,728
Total Gross Loans	77,585	66,421
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	5	9
Total Past Due Loans	5	9
Current Loans	824	898
Total Gross Loans	829	907
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	192	228
Total Past Due Loans	219	265
Current Loans	13,399	13,755
Total Gross Loans	13,618	14,020
Accruing Loans 90 or more Days Past Due	10	19
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	31	16
Total Past Due Loans	41	20
Current Loans	1,562	1,628
Total Gross Loans	1,603	1,648
Accruing Loans 90 or more Days Past Due	10	4
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	161	212
Total Past Due Loans	178	245
Current Loans	11,837	12,127
Total Gross Loans	12,015	12,372
Accruing Loans 90 or more Days Past Due		15
Loans 90 or more Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	3,496	3,452
Loans 90 or more Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	3,450	3,394
Loans 90 or more Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	54	54
Loans 90 or more Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	15	29
Loans 90 or more Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	334	330
Loans 90 or more Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	3,047	2,981
Loans 90 or more Days Past Due [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	19	21
Loans 90 or more Days Past Due [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	19	21
Loans 90 or more Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	27	37
Loans 90 or more Days Past Due [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	10	4
Loans 90 or more Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	$ 17	$ 33

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum loan limit considered for impairment evaluation by management	$ 100,000
Restructured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 174,274	$ 174,274

Loans - Impaired Loans, Segrega

Loans - Impaired Loans, Segregated by Class of Loans (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 11,680,000	$ 12,023,000
Recorded Investment With No Allowance	6,165,000	6,540,000
Recorded Investment With Allowance	3,798,000	3,766,000
Total Recorded Investment	9,963,000	10,306,000
Related Allowance	422,000	401,000
Average Recorded Investment	10,135,000	7,352,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	11,675,000	10,601,000
Recorded Investment With No Allowance	6,165,000	5,209,000
Recorded Investment With Allowance	3,793,000	3,675,000
Total Recorded Investment	9,958,000	8,884,000
Related Allowance	417,000	374,000
Average Recorded Investment	10,132,000	6,489,000
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	113,000
Recorded Investment With No Allowance	59,000
Recorded Investment With Allowance	54,000
Total Recorded Investment	113,000
Related Allowance	18,000
Average Recorded Investment	56,500
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	266,000	269,000
Recorded Investment With No Allowance	266,000	269,000
Total Recorded Investment	266,000	269,000
Average Recorded Investment	267,500	135,000
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	817,000	1,153,000
Recorded Investment With No Allowance	727,000	1,062,000
Recorded Investment With Allowance	90,000	91,000
Total Recorded Investment	817,000	1,153,000
Related Allowance	24,000	27,000
Average Recorded Investment	985,000	728,000
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	10,479,000
Recorded Investment With No Allowance	5,113,000
Recorded Investment With Allowance	3,649,000
Total Recorded Investment	8,762,000
Related Allowance	375,000
Average Recorded Investment	8,823,000
Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,000	12,023,000
Recorded Investment With No Allowance		6,540,000
Recorded Investment With Allowance	5,000	3,766,000
Total Recorded Investment	5,000	10,306,000
Related Allowance	5,000	401,000
Average Recorded Investment	3,000	$ 7,352,000
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,000
Recorded Investment With Allowance	5,000
Total Recorded Investment	5,000
Related Allowance	5,000
Average Recorded Investment	$ 3,000

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings Segregated by Class (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)Loan	Dec. 31, 2018USD ($)Loan	Dec. 31, 2017USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	3	3	3
Post-Modification Outstanding Recorded Investment	$ 2,748	$ 2,782	$ 3,047
Real Estate Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	3	3
Pre-Modification Outstanding Recorded Investment	$ 4,871	$ 4,871
Post-Modification Outstanding Recorded Investment	$ 2,748	$ 2,782
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	3	3
Pre-Modification Outstanding Recorded Investment	$ 4,871	$ 4,871
Post-Modification Outstanding Recorded Investment	$ 2,748	$ 2,782

Loans - Changes in Troubled Deb

Loans - Changes in Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)Loan	Dec. 31, 2018USD ($)Loan	Dec. 31, 2017USD ($)Loan
Receivables [Abstract]
Number of Loans | Loan	3	3	3
Principal paydowns, Recorded Investment	$ (34)	$ (265)
Post-Modification Outstanding Recorded Investment	$ 2,748	$ 2,782	$ 3,047

Loans - Detailed Amount of Gros

Loans - Detailed Amount of Gross Loans Segregated by Loan Grade and Class (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 447,499	$ 429,322
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	355,467	347,974
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	47,492	41,134
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	17,264	14,498
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	86,828	88,747
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	203,883	203,595
Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	78,414	67,328
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	77,585	66,421
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	829	907
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	13,618	14,020
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,603	1,648
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	12,015	12,372
Satisfactory 1, 2, 3, 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	398,168	383,529
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	308,352	304,850
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	45,746	39,726
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,942	13,248
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	77,791	79,659
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	168,873	172,217
Satisfactory 1, 2, 3, 4 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	76,424	64,870
Satisfactory 1, 2, 3, 4 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	75,626	63,994
Satisfactory 1, 2, 3, 4 [Member] | Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	798	876
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	13,392	13,809
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,562	1,628
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	11,830	12,181
Special Mention 5,6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	25,487	21,014
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	25,200	20,868
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,073	840
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	346	339
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,902	1,751
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	21,879	17,938
Special Mention 5,6 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	225	81
Special Mention 5,6 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	225	81
Special Mention 5,6 [Member] | Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0
Special Mention 5,6 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	62	65
Special Mention 5,6 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	62	65
Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	23,778	24,724
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	21,900	22,256
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	673	568
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	976	911
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	7,120	7,337
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	13,131	13,440
Substandard 7 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,765	2,377
Substandard 7 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,734	2,346
Substandard 7 [Member] | Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	31	31
Substandard 7 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	113	91
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	41	20
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	72	71
Doubtful 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	51	55
Doubtful 8 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	51	55
Doubtful 8 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	51	$ 55
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15
Loss [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15
Loss [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 15

Loans - Detailed Activity in Al

Loans - Detailed Activity in Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 3,371,695	$ 3,019,228
(Reversal of) provision for loan losses	195,479	(236,773)
Chargeoffs	37,118	129,237
Recoveries	29,840	72,223
Net chargeoffs (recoveries)	7,278	57,014
Ending Balance	3,559,896	2,725,441
Loans individually evaluated for impairment			$ 422,117	$ 459,359
Loans collectively evaluated for impairment			3,137,779	2,266,082
Ending Balance	3,371,695	3,019,228	3,559,896	2,725,441
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,844,681	2,151,715
(Reversal of) provision for loan losses	(62,733)	(65,925)
Chargeoffs		83,045
Recoveries	11,600	45,114
Net chargeoffs (recoveries)	(11,600)	37,931
Ending Balance	2,793,548	2,047,859
Loans individually evaluated for impairment			417,033	459,359
Loans collectively evaluated for impairment			2,376,515	1,588,500
Ending Balance	2,844,681	2,151,715	2,793,548	2,047,859
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	221,841	346,781
(Reversal of) provision for loan losses	99,457	(150,889)
Chargeoffs	12,178	15,347
Recoveries	4,340	861
Net chargeoffs (recoveries)	7,838	14,486
Ending Balance	313,460	181,406
Loans individually evaluated for impairment			5,084
Loans collectively evaluated for impairment			308,376	181,406
Ending Balance	221,841	346,781	313,460	181,406
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	305,173	520,732
(Reversal of) provision for loan losses	158,755	(19,959)
Chargeoffs	24,940	30,845
Recoveries	13,900	26,248
Net chargeoffs (recoveries)	11,040	4,597
Ending Balance	452,888	496,176
Loans collectively evaluated for impairment			452,888	496,176
Ending Balance	$ 305,173	$ 520,732	$ 452,888	$ 496,176

Loans - Recorded Investment in

Loans - Recorded Investment in Loans Related to Balance in Allowance for Possible Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	$ 9,963	$ 10,306
Loans collectively evaluated for general impairment	437,536	419,016
Total Gross Loans	447,499	429,322
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	9,958	10,306
Loans collectively evaluated for general impairment	345,509	337,668
Total Gross Loans	355,467	347,974
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	5
Loans collectively evaluated for general impairment	78,409	67,328
Total Gross Loans	78,414	67,328
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for general impairment	13,618	14,020
Total Gross Loans	$ 13,618	$ 14,020

Premises and Equipment - Summar

Premises and Equipment - Summary of Lease Costs (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Operating lease cost	$ 96
Short-term lease cost	6
Total lease cost	$ 102

Premises and Equipment - Maturi

Premises and Equipment - Maturities of Operating Lease Liabilities (Detail) $ in Thousands	Mar. 31, 2019USD ($)
Lease payments due:
Within one year	$ 362
After one year but within two years	362
After two years but within three years	320
After three year but within four years	76
After four years but within five years	25
Total undiscounted cash flows	1,145
Discount on cash flows	(59)
Total lease liability	$ 1,086

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) $ in Millions	Mar. 31, 2019USD ($)
Operating lease right-of-use ("ROU")	$ 1,086
Weighted average remaining lease term	1 year 7 months 6 days
Weighted average discount rate	3.30%

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Capital Structure Activity (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Beginning Balance	$ 83,866,317	$ 88,451,040
Net income	1,226,771	1,772,387
Dividends paid	(1,177,087)	(1,174,729)
Stock compensation expense	41,344	45,056
Other comprehensive income, net	6,621,712	(7,060,858)
Ending Balance	90,579,057	82,024,896
Common Stock
Beginning Balance	$ 980,906	$ 978,941
Beginning Balance (in shares)	4,904,530	4,894,705
Ending Balance	$ 980,906	$ 978,941
Ending Balance (in shares)	4,904,530	4,894,705
Additional Paid-In Capital
Beginning Balance	$ 4,298,499	$ 4,103,139
Stock compensation expense	41,344	45,056
Ending Balance	4,339,843	4,148,195
Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(14,974,603)	(8,225,419)
Other comprehensive income, net	6,621,712	(7,068,858)
Ending Balance	(8,352,891)	(15,294,277)
Retained Earnings
Beginning Balance	93,561,515	91,594,379
Net income	1,226,771	1,772,387
Dividends paid	(1,177,087)	(1,174,729)
Ending Balance	$ 93,611,199	$ 92,192,037

Shareholders' Equity - Summar_2

Shareholders' Equity - Summary of Capital Structure Activity (Detail) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends paid, per share	$ 0.24	$ 0.24

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 507,791,195	$ 444,746,454
Obligations of U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	97,305,408	95,977,783
Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	307,236,910	247,374,153
State, County and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	103,248,877	101,394,518
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	507,791,195	444,746,454
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	507,791,195	444,746,454
Fair Value, Measurements, Recurring [Member] | Obligations of U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	97,305,408	95,977,783
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	307,236,910	247,374,153
Fair Value, Measurements, Recurring [Member] | State, County and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	103,248,877	101,394,518
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	507,791,195	444,746,454
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Obligations of U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	97,305,408	95,977,783
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	307,236,910	247,374,153
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | State, County and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 103,248,877	$ 101,394,518

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Detail)	3 Months Ended
	Mar. 31, 2018USD ($)
Fair Value Disclosures [Abstract]
Beginning Balance	$ 3,074,227
Unrealized (loss) gains included in other comprehensive income	8,630
Ending Balance	$ 3,082,857

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Gains or losses in earnings attributable to the change in unrealized gains or losses	$ 0	$ 0
Carrying value of an impaired loan	9,963,000	10,306,000
Impaired loans, allowance for loan losses	422,000	401,000
Fair value adjustment to OREO due to declines or impairment after foreclosure	$ 0	$ 0

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Asset Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis	$ 3,376,414	$ 3,553,147
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis	3,376,414	3,364,538
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis		188,609
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis	3,376,414	3,553,147
Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis	$ 3,376,414	3,364,538
Significant Unobservable Inputs (Level 3) [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis		$ 188,609

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Significant Unobservable Inputs (Level 3) Used in Valuation of Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 3,376,414	$ 3,553,147
Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 3,376,414	$ 3,364,538
Valuation Technique	Appraised value of collateral less estimated costs to sell
Measurement Input, Loss Severity [Member] | Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Estimated costs to sell	25.00%

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Financial assets
Cash and due from banks	$ 12,462,550	$ 12,592,130
Interest bearing deposits with banks	27,122,108	8,079,742
Securities available-for-sale	507,791,195	444,746,454
Net loans	439,516,508	420,992,074
Financial liabilities
Deposits	841,066,595	755,462,961
Securities Sold under Agreement to Repurchase	115,450,591	107,965,505
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets
Cash and due from banks	12,462,550	12,592,130
Interest bearing deposits with banks	27,122,108	8,079,742
Financial liabilities
Deposits	617,922,299	544,985,869
Securities Sold under Agreement to Repurchase	115,450,591	107,965,505
Significant Other Observable Inputs (Level 2) [Member]
Financial assets
Securities available-for-sale	507,791,195	444,746,454
Financial liabilities
Deposits	223,144,296	210,477,092
Significant Unobservable Inputs (Level 3) [Member]
Financial assets
Net loans	439,516,508	420,992,074
Carrying Value [Member]
Financial assets
Cash and due from banks	12,462,550	12,592,130
Interest bearing deposits with banks	27,122,108	8,079,742
Securities available-for-sale	507,791,195	444,746,454
Net loans	443,909,475	425,905,093
Financial liabilities
Deposits	840,159,983	756,221,510
Securities Sold under Agreement to Repurchase	$ 115,450,591	$ 107,965,505