Citizens Holding (CIZN) 10-Q 8 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Nov. 06, 2019
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Trading Symbol	CIZN
Entity Registrant Name	CITIZENS HOLDING CO /MS/
Entity Central Index Key	0001075706
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Address, State or Province	MS
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		5,578,131

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($)	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 21,106,679	$ 12,592,130
Interest bearing deposits with other banks	61,234,815	8,079,742
Investment securities available for sale, at fair value	434,145,569	444,746,454
Loans, net of allowance for loan losses of $3,805,579 in 2019 and $3,371,695 in 2018	469,692,103	425,905,093
Premises and equipment, net	20,029,997	19,717,305
Other real estate owned, net	3,383,444	3,440,148
Accrued interest receivable	3,596,005	4,165,783
Cash surrender value of life insurance	25,866,655	25,383,931
Deferred tax assets, net	1,899,036	6,633,539
Other assets	8,649,342	7,965,952
TOTAL ASSETS	1,049,603,645	958,630,077
Deposits:
Noninterest-bearing demand	168,317,216	170,029,729
Interest-bearing NOW and money market accounts	326,982,928	298,220,430
Savings deposits	78,474,191	76,735,710
Certificates of deposit	220,539,672	211,235,641
Total deposits	794,314,007	756,221,510
Securities sold under agreement to repurchase	144,502,629	107,965,505
Accrued interest payable	685,777	470,710
Deferred compensation payable	9,336,912	9,052,972
Other liabilities	1,765,255	1,053,063
Total liabilities	950,604,580	874,763,760
SHAREHOLDERS' EQUITY
Common stock, $0.20 par value, 22,500,000 shares authorized, 4,912,030 shares issued and outstanding at September 30, 2019 and 4,904,530 at December 31, 2018	982,406	980,906
Additional paid-in capital	4,419,406	4,298,499
Retained earnings	93,957,055	93,561,515
Accumulated other comprehensive loss, net of tax benefit of $119,614 at September 30, 2019 and $4,978,232 at December 31, 2018	(359,802)	(14,974,603)
Total shareholders' equity	98,999,065	83,866,317
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,049,603,645	$ 958,630,077

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Loans, allowance for loan losses	$ 3,805,579	$ 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	4,912,030	4,904,530
Common stock, shares outstanding	4,912,030	4,904,530
Accumulated other comprehensive loss, tax benefits	$ 119,614	$ 4,978,232

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
INTEREST INCOME
Interest and fees on loans	$ 5,940,805	$ 5,166,554	$ 17,220,751	$ 14,867,465
Interest on securities
Taxable	1,945,053	2,074,424	6,252,649	6,320,482
Nontaxable	345,238	622,050	1,474,886	1,933,104
Other interest	212,319	24,291	529,098	144,635
Total interest income	8,443,415	7,887,319	25,477,384	23,265,686
INTEREST EXPENSE
Deposits	1,922,396	709,985	5,567,837	1,726,700
Other borrowed funds	602,730	458,039	1,575,580	1,062,505
Total interest expense	2,525,126	1,168,024	7,143,417	2,789,205
NET INTEREST INCOME	5,918,289	6,719,295	18,333,967	20,476,481
PROVISION FOR LOAN LOSSES	11,738	288,576	472,036	140,765
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	5,906,551	6,430,719	17,861,931	20,335,716
OTHER INCOME
Other operating income	516,862	287,683	1,039,696	870,153
Total other income	2,505,900	2,220,574	6,624,989	6,399,414
OTHER EXPENSES
Salaries and employee benefits	3,508,723	3,668,012	10,525,116	11,011,291
Occupancy expense	1,287,320	1,486,232	4,119,609	4,373,233
Other expense	2,071,595	1,739,780	5,185,179	5,505,070
Total other expenses	6,867,638	6,894,024	19,829,904	20,889,594
INCOME BEFORE PROVISION FOR INCOME TAXES	1,544,813	1,757,269	4,657,016	5,845,536
PROVISION FOR INCOME TAXES	211,925	260,475	726,615	888,215
NET INCOME	$ 1,332,888	$ 1,496,794	$ 3,930,401	$ 4,957,321
NET INCOME PER SHARE -Basic	$ 0.27	$ 0.31	$ 0.80	$ 1.01
NET INCOME PER SHARE -Diluted	0.27	0.31	0.80	1.01
DIVIDENDS PAID PER SHARE	$ 0.24	$ 0.24	$ 0.72	$ 0.72
Deposit Account [Member]
OTHER INCOME
Other income	$ 1,125,631	$ 1,170,956	$ 3,268,578	$ 3,381,809
Financial Service, Other [Member]
OTHER INCOME
Other income	$ 863,407	$ 761,935	$ 2,316,715	$ 2,147,452

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 1,332,888	$ 1,496,794	$ 3,930,401	$ 4,957,321
Securities available-for-sale
Unrealized holding gains (losses)	3,311,002	(3,006,277)	19,283,111	(13,656,532)
Income tax effect	(826,095)	750,067	(4,811,136)	3,407,305
Net unrealized (losses) gains	2,484,907	(2,256,210)	14,471,975	(10,249,227)
Reclassification adjustment for gains included in net income	244,457	11,047	190,308	11,047
Income tax effect	(60,992)	(2,756)	(47,482)	(2,756)
Net gains included in net income	183,465	8,291	142,826	8,291
Total other comprehensive income (loss)	2,668,372	(2,247,919)	14,614,801	(10,240,936)
Comprehensive income (loss)	$ 4,001,260	$ (751,125)	$ 18,545,202	$ (5,283,615)

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net cash provided by operating activities	$ 8,867,757	$ 8,832,306
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from maturities and calls of securities available for sale	39,516,994	32,579,774
Proceeds from sale of investment securities	96,171,622	17,609,890
Purchases of investment securities available for sale	(108,814,987)	(10,550,000)
Purchases of bank premises and equipment	(955,550)	(268,708)
Proceeds from sales of bank premises and equipment		264,000
(Increase) decrease in interest bearing deposits with other banks	(53,155,073)	180,675
Proceeds from sale of other real estate	170,356	802,372
Net increase in loans	(44,381,330)	(29,407,770)
Net cash (used in) provided by investing activities	(71,447,968)	11,210,233
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	38,092,497	36,694,834
Increase (decrease) in securities sold under agreement to repurchase	36,537,124	(53,589,022)
Increase in federal funds purchased		5,000,000
Repayment of Federal Home Loan Bank advances		(10,000,000)
Proceeds from exercise of stock options		27,000
Payment of dividends	(3,534,861)	(3,528,904)
Net cash provided by (used in) financing activities	71,094,760	(25,396,092)
Net increase (decrease) in cash and due from banks	8,514,549	(5,353,553)
Cash and due from banks, beginning of period	12,592,130	17,962,990
Cash and due from banks, end of period	$ 21,106,679	$ 12,609,437

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 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 September 30, 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 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 Corporation. 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 consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. 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 2016-02”) 2016-02 2016-02 2016-02 2016-02, The Company’s operating leases relate primarily to branch properties and related equipment. As a result of implementing ASU 2016-02, right-of-use Newly Issued, But Not Yet Effective Accounting Standards In June 2016, the FASB issued ASU 2016-13, 2016-13”). 2016-13 2016-13 2016-13 2016-13 2016-13 ASU 2018-13 Fair Value Measurement (Topic 820) – Changes in the Disclosure Requirements for Fair Value Measurement 2018-13”) 2018-13

Mergers and Acquisitions

Mergers and Acquisitions	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Mergers and Acquisitions	Note 2. Mergers and Acquisitions Merger with Charter Bank Effective October 1, 2019, the Company completed its acquisition by merger of Charter Bank (“Charter”), in a transaction valued at approximately $19.7 million. The Company issued 666,099 shares of common stock and paid approximately $6.1 million in cash to Charter shareholders, excluding cash paid for fractional shares. At closing, Charter merged with and into the Bank, with the Bank the surviving corporation in the merger. Operations of Charter will be included in the consolidated financial statements of the Corporation for periods subsequent to the acquisition date. Prior to any determination of purchase accounting adjustments, as a result of the acquisition, the Company acquired total assets of approximately $149 million, which include total loans of approximately $104 million, total deposits of approximately $126 million, and 4 banking locations on the Mississippi Gulf Coast. The Company is finalizing the fair value of assets acquired and liabilities assumed as part of the acquisition.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 3. 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 September 30, 2019, the Corporation had entered into loan commitments with certain customers with an aggregate unused balance of $70,933,230 compared to an aggregate unused balance of $58,835,208 at December 31, 2018. There were $2,435,810 of letters of credit outstanding at September 30, 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 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	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Net Income per Share	Note 4. 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 For the Nine Months Ended September 30, Ended September 30, 2019 2018 2019 2018 Basic weighted average shares outstanding 4,900,030 4,899,520 4,896,871 4,888,372 Dilutive effect of granted options 1,465 5,093 2,321 9,586 Diluted weighted average shares outstanding 4,901,495 4,904,613 4,899,192 4,897,958 Net income $ 1,332,888 $ 1,496,794 $ 3,930,401 $ 4,957,321 Net income per share-basic $ 0.27 $ 0.31 $ 0.80 $ 1.01 Net income per share-diluted $ 0.27 $ 0.31 $ 0.80 $ 1.01

Equity Compensation Plans

Equity Compensation Plans	9 Months Ended
	Sep. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Compensation Plans	Note 5. 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 nine months ended September 30, 2019: Directors’ Plan 2013 Plan Weighted Weighted Number Average Number Average of Exercise of Exercise Shares Price Shares Price Outstanding at December 31, 2018 52,500 $ 21.55 — $ — Granted — — — — Exercised — — — — Expired (12,000 ) 21.75 — — Outstanding at September 30, 2019 40,500 $ 21.49 — $ — The intrinsic value of options outstanding under the Directors’ Plan at September 30, 2019, was $25,920. No options were outstanding under the 2013 Plan as of September 30, 2019. During 2019, 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 one-year

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 6. Income Taxes For the three months ended September 30, 2019 and 2018, the Company recorded a provision for income taxes totaling $212 thousand and $260 thousand, respectively. The effective tax rate was 13.7% and 14.8% for the three months ending September 30, 2019 and 2018, respectively. For the nine months ended September 30, 2019 and 2018, the Company recorded a provision for income taxes totaling $727 thousand and $888 thousand, respectively. The effective tax rate was 15.6% and 15.2% for the nine months ending September 30, 2019 and 2018, respectively. The provision for income taxes includes both federal and state income taxes and differs from the statutory rate due to favorable permanent differences primarily related to tax free municipal investments.

Securities

Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Note 7. Securities The amortized cost and estimated fair value of securities available-for-sale Gross Gross Amortized Unrealized Unrealized Estimated September 30, 2019 Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 98,400,709 $ 22,134 $ 441,703 $ 97,981,140 Mortgage backed securities 276,342,668 839,052 1,583,407 275,598,313 State, County, Municipals 59,881,608 744,167 59,659 60,566,116 Total $ 434,624,985 $ 1,605,353 $ 2,084,769 $ 434,145,569 Gross Gross Amortized Unrealized Unrealized Estimated December 31, 2018 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 September 30, 2019 and December 31, 2018, securities with a carrying value of $376,127,226 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 September 30, 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. September 30, 2019 December 31, 2018 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 345,000 $ 344,200 $ 1,875,288 $ 1,877,665 Due after one year through five years 95,296,476 94,888,785 91,948,838 89,121,194 Due after five years through ten years 12,338,444 12,457,030 32,801,788 31,718,293 Due after ten years 50,302,397 50,857,242 78,330,873 74,655,149 Residential mortgage backed securities 217,007,709 216,247,964 187,776,954 179,235,806 Commercial mortgage backed securities 59,334,959 59,350,348 71,965,548 68,138,347 Total $ 434,624,985 $ 434,145,569 $ 464,699,289 $ 444,746,454 The tables below show the Corporation’s gross unrealized losses and fair value of available-for-sale A summary of unrealized loss information for securities available-for-sale, September 30, 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 $ 38,652,471 $ 308,973 $ 20,367,270 $ 132,730 $ 59,019,741 $ 441,703 Mortgage backed securities 32,441,833 187,039 108,373,816 1,396,368 140,815,649 1,583,407 State, County, Municipal 7,174,822 24,415 3,732,036 35,244 10,906,858 59,659 Total $ 78,269,126 $ 520,427 $ 132,473,122 $ 1,564,342 $ 210,742,248 $ 2,084,769 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

Loans

Loans	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans	Note 8. Loans The composition of net loans (in thousands) at September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 63,491 $ 41,134 Farmland 15,985 14,498 1-4 86,516 88,747 Commercial Real Estate 205,968 203,595 Total Real Estate Loans 371,960 347,974 Business Loans: Commercial and Industrial Loans 87,480 66,421 Farm Production and Other Farm Loans 742 907 Total Business Loans 88,222 67,328 Consumer Loans: Credit Cards 1,744 1,648 Other Consumer Loans 11,584 12,372 Total Consumer Loans 13,328 14,020 Total Gross Loans 473,510 429,322 Unearned Income (12 ) (45 ) Allowance for Loan Losses (3,806 ) (3,372 ) Loans, net $ 469,692 $ 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 non-accrual Period-end, non-accrual September 30, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 113 $ — Farmland 246 200 1-4 2,057 1,831 Commercial Real Estate 9,484 7,612 Total Real Estate Loans 11,900 9,643 Business Loans: Commercial and Industrial Loans 363 76 Farm Production and Other Farm Loans 31 31 Total Business Loans 394 107 Consumer Loans: Other Consumer Loans 65 89 Total Consumer Loans 65 89 Total Nonaccrual Loans $ 12,359 $ 9,839 An aging analysis of past due loans (in thousands), segregated by class, as of September 30, 2019, 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 $ 2,218 $ — $ 2,218 $ 61,273 $ 63,491 $ — Farmland 339 — 339 15,646 15,985 — 1-4 1,832 912 2,744 83,772 86,516 220 Commercial Real Estate 1,688 2,335 4,023 201,945 205,968 — Total Real Estate Loans 6,077 3,247 9,324 362,636 371,960 220 Business Loans: Commercial and Industrial Loans 648 262 910 86,570 87,480 — Farm Production and Other Farm Loans — 31 31 711 742 — Total Business Loans 648 293 941 87,281 88,222 — Consumer Loans: Credit Cards 18 47 65 1,679 1,744 47 Other Consumer Loans 141 5 146 11,438 11,584 — Total Consumer Loans 159 52 211 13,117 13,328 47 Total Loans $ 6,884 $ 3,592 $ 10,476 $ 463,034 $ 473,510 $ 267 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 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 that 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 Impaired loans (in thousands) as of September 30, 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 $ 17 $ 57 Farmland 253 253 — 253 — $ 261 1-4 863 761 102 863 30 $ 1,008 Commercial Real Estate 11,919 6,104 4,099 10,203 459 $ 9,544 Total Real Estate Loans 13,148 7,177 4,255 11,432 506 $ 10,869 Business Loans: Commercial and Industrial Loans 144 — 144 144 72 $ 72 Total Business Loans 144 — 144 144 72 $ 72 Total Loans $ 13,292 $ 7,177 $ 4,399 $ 11,576 $ 578 $ 10,941 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 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 Outstanding Outstanding Number of Recorded Recorded September 30, 2019 Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,607 Total 3 $ 4,871 $ 2,607 Pre-Modification Post-Modification Outstanding Outstanding Number of Recorded Recorded December 31, 2018 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 of Recorded 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 (175 ) Total at September 30, 2019 3 $ 2,607 The allocated allowance for loan losses attributable to restructured loans was $174,274 at September 30, 2019 and December 31, 2018. The Corporation had no commitments to lend additional funds on these troubled debt restructurings as of September 30, 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 September 30, 2019. The following table details the amount of gross loans (in thousands), segregated by loan grade and class, as of September 30, 2019: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 59,807 $ 1,716 $ 1,968 $ — $ — $ 63,491 Farmland 14,747 379 859 — — 15,985 1-4 77,590 1,924 7,002 — — 86,516 Commercial Real Estate 165,914 22,631 17,423 — — 205,968 Total Real Estate Loans 318,058 26,650 27,252 — — 371,960 Business Loans: Commercial and Industrial Loans 83,337 144 3,999 — — 87,480 Farm Production and Other Farm Loans 707 — 4 — 31 742 Total Business Loans 84,044 144 4,003 — 31 88,222 Consumer Loans: Credit Cards 1,679 — 65 — — 1,744 Other Consumer Loans 11,380 50 113 41 — 11,584 Total Consumer Loans 13,059 50 178 41 — 13,328 Total Loans $ 415,161 $ 26,844 $ 31,433 $ 41 $ 31 $ 473,510 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 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 nine months ended September 30, 2019: Real Business September 30, 2019 Estate Loans Consumer Total Beginning Balance, January 1, 2019 $ 2,844,681 $ 221,841 $ 305,173 $ 3,371,695 Provision for loan losses (883 ) 269,917 203,002 472,036 Chargeoffs 15,073 91,291 76,972 183,336 Recoveries 101,119 8,858 35,207 145,184 Net (recoveries) chargeoffs (86,046 ) 82,433 41,765 38,152 Ending Balance $ 2,929,844 $ 409,325 $ 466,410 $ 3,805,579 Period end allowance allocated to: Loans individually evaluated for impairment $ 506,560 $ 71,962 $ — $ 578,522 Loans collectively evaluated for impairment 2,423,284 337,363 466,410 3,227,057 Ending Balance, September 30, 2019 $ 2,929,844 $ 409,325 $ 466,410 $ 3,805,579 The following table details activity in the allowance for loan losses by portfolio segment for the nine months ended September 30, 2018: Real Business September 30, 2018 Estate Loans Consumer Total Beginning Balance, January 1, 2018 $ 2,151,715 $ 346,781 $ 520,732 $ 3,019,228 Provision for (reversal of) loan losses 615,927 (289,894 ) (185,268 ) 140,765 Chargeoffs 202,352 31,236 117,401 350,989 Recoveries 91,071 203,777 69,091 363,939 Net chargeoffs (recoveries) 111,281 (172,541 ) 48,310 (12,950 ) Ending Balance $ 2,656,361 $ 229,428 $ 287,154 $ 3,172,943 Period end allowance allocated to: Loans individually evaluated for impairment $ 409,496 $ — $ — $ 409,496 Loans collectively evaluated for impairment 2,246,865 229,428 287,154 2,763,447 Ending Balance, September 30, 2018 $ 2,656,361 $ 229,428 $ 287,154 $ 3,172,943 The Corporation’s recorded investment in loans as of September 30, 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 September 30, 2019 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 11,432 $ 144 $ — $ 11,576 Loans collectively evaluated for general impairment 360,528 88,078 13,328 461,934 $ 371,960 $ 88,222 $ 13,328 $ 473,510 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	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Premises and Equipment	Note 9. Premises and Equipment The Company leases certain premises and equipment under operating leases. At September 30, 2019, the Company had lease liabilities and ROU assets totaling $851 thousand related to these leases. Lease liabilities and ROU assets are reflected in other liabilities and other assets, respectively. For the nine months ended September 30, 2019, the weighted average remaining lease term for operating leases was 1.4 years and the weighted average discount rate used in the measurement of operating lease liabilities was 3.3%. Lease costs were as follows: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 (in thousands) Operating lease cost $ 92 $ 277 Short-term lease cost 6 17 Variable lease cost — — $ 98 $ 294 There were no sale and leaseback transactions, leverage leases or lease transactions with related parties during the nine months ended September 30, 2019. A maturity analysis of operating lease liabilities and reconciliation of the undiscounted cash flows to the total operating lease liability is as follows: Nine Months Ended September 30, 2019 (in thousands) Lease payments due: Within one year $ 348 After one year but within two years 324 After two years but within three years 194 After three year but within four years 21 After four years but within five years — After five years — Total undiscounted cash flows 887 Discount on cash flows (36 ) Total lease liability $ 851

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Shareholders' Equity	Note 10. Shareholders’ Equity The following summarizes the activity in the capital structure of the Company: Accumulated Number Additional 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 Net income — — — — 1,370,742 1,370,742 Dividends paid ($0.24 per share) — — — — (1,178,887 ) (1,178,887 ) Options exercised — — — — — — Restricted stock granted 7,500 1,500 (1,500 ) — — — Stock compensation expense — — 40,694 — — 40,694 Other comprehensive income, net — — — 5,324,717 — 5,324,717 Balance, June 30, 2019 4,912,030 $ 982,406 $ 4,379,037 $ (3,028,174 ) $ 93,803,054 $ 96,136,323 Net income — — — — 1,332,888 1,332,888 Dividends paid ($0.24 per share) — — — — (1,178,887 ) (1,178,887 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 40,369 — — 40,369 Other comprehensive income, net — — — 2,668,372 — 2,668,372 Balance, September 30, 2019 4,912,030 $ 982,406 $ 4,419,406 $ (359,802 ) $ 93,957,055 $ 98,999,065 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 Net income — — — — 1,688,140 1,688,140 Dividends paid ($0.24 per share) — — — — (1,177,087 ) (1,177,087 ) Options exercised 2,325 465 26,535 — — 27,000 Restricted stock granted 7,500 1,500 (1,500 ) — — — Stock compensation expense — — 42,581 — — 42,581 Other comprehensive income, net — — — (924,159 ) — (924,159 ) Balance, June 30, 2018 4,904,530 $ 980,906 $ 4,215,811 $ (16,218,436 ) $ 92,703,090 $ 81,681,371 Net income — — — — 1,496,794 1,496,794 Dividends paid ($0.24 per share) — — — — (1,177,088 ) (1,177,088 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 41,344 — — 41,344 Other comprehensive income, net — — — (2,247,919 ) — (2,247,919 ) Balance, September 30, 2018 4,904,530 980,906 4,257,155 (18,466,355 ) 93,022,796 79,794,502

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 11. 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 September 30, 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 $ — $ 97,981,140 $ — $ 97,981,140 Mortgage-backed securities — 275,598,313 — 275,598,313 State, county and municipal obligations — 60,566,116 — 60,566,116 Total $ — $ 434,145,569 $ — $ 434,145,569 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 Corporation recorded no gains or losses in earnings for the period ended September 30, 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 allowance for loan losses. 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 September 30, 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 $ — $ — $ 3,819,908 $ 3,819,908 Total $ — $ — $ 3,819,908 $ 3,819,908 The following table presents information as of September 30, 2019 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Significant Unobservable Inputs Range of Financial instrument Fair Value Valuation Technique Impaired loans $ 3,819,908 Appraised value of collateral less 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 Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs 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 $4,398,430 and $3,364,538 had an allocated allowance for loan losses of $578,522 and $401,347 at September 30, 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- 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 September 30, 2019: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Total Carrying Identical Observable Unobservable Fair September 30, 2019 Value Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 21,106,679 $ 21,106,679 $ — $ — $ 21,106,679 Interest bearing deposits with banks 61,234,815 61,234,815 — — 61,234,815 Securities available-for-sale 434,145,569 — 434,145,569 — 434,145,569 Net loans 469,692,103 — — 466,369,797 466,369,797 Financial liabilities Deposits $ 794,314,007 $ 573,774,335 $ 222,487,675 $ — $ 796,262,010 Securities sold under agreement to repurchase 144,502,629 144,502,629 — — 144,502,629 The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at December 31, 2018: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Total Carrying Identical Observable Unobservable Fair December 31, 2018 Value Assets Inputs Inputs 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)	9 Months Ended
	Sep. 30, 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 September 30, 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
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 Corporation. 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 consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. 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 2016-02”) 2016-02 2016-02 2016-02 2016-02, The Company’s operating leases relate primarily to branch properties and related equipment. As a result of implementing ASU 2016-02, right-of-use Newly Issued, But Not Yet Effective Accounting Standards In June 2016, the FASB issued ASU 2016-13, 2016-13”). 2016-13 2016-13 2016-13 2016-13 2016-13 ASU 2018-13 Fair Value Measurement (Topic 820) – Changes in the Disclosure Requirements for Fair Value Measurement 2018-13”) 2018-13

Net Income per Share (Tables)

Net Income per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Net income per share was computed as follows: For the Three Months For the Nine Months Ended September 30, Ended September 30, 2019 2018 2019 2018 Basic weighted average shares outstanding 4,900,030 4,899,520 4,896,871 4,888,372 Dilutive effect of granted options 1,465 5,093 2,321 9,586 Diluted weighted average shares outstanding 4,901,495 4,904,613 4,899,192 4,897,958 Net income $ 1,332,888 $ 1,496,794 $ 3,930,401 $ 4,957,321 Net income per share-basic $ 0.27 $ 0.31 $ 0.80 $ 1.01 Net income per share-diluted $ 0.27 $ 0.31 $ 0.80 $ 1.01

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	9 Months Ended
	Sep. 30, 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 nine months ended September 30, 2019: Directors’ Plan 2013 Plan Weighted Weighted Number Average Number Average of Exercise of Exercise Shares Price Shares Price Outstanding at December 31, 2018 52,500 $ 21.55 — $ — Granted — — — — Exercised — — — — Expired (12,000 ) 21.75 — — Outstanding at September 30, 2019 40,500 $ 21.49 — $ —

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 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 Gross Gross Amortized Unrealized Unrealized Estimated September 30, 2019 Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 98,400,709 $ 22,134 $ 441,703 $ 97,981,140 Mortgage backed securities 276,342,668 839,052 1,583,407 275,598,313 State, County, Municipals 59,881,608 744,167 59,659 60,566,116 Total $ 434,624,985 $ 1,605,353 $ 2,084,769 $ 434,145,569 Gross Gross Amortized Unrealized Unrealized Estimated December 31, 2018 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 September 30, 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. September 30, 2019 December 31, 2018 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 345,000 $ 344,200 $ 1,875,288 $ 1,877,665 Due after one year through five years 95,296,476 94,888,785 91,948,838 89,121,194 Due after five years through ten years 12,338,444 12,457,030 32,801,788 31,718,293 Due after ten years 50,302,397 50,857,242 78,330,873 74,655,149 Residential mortgage backed securities 217,007,709 216,247,964 187,776,954 179,235,806 Commercial mortgage backed securities 59,334,959 59,350,348 71,965,548 68,138,347 Total $ 434,624,985 $ 434,145,569 $ 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, September 30, 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 $ 38,652,471 $ 308,973 $ 20,367,270 $ 132,730 $ 59,019,741 $ 441,703 Mortgage backed securities 32,441,833 187,039 108,373,816 1,396,368 140,815,649 1,583,407 State, County, Municipal 7,174,822 24,415 3,732,036 35,244 10,906,858 59,659 Total $ 78,269,126 $ 520,427 $ 132,473,122 $ 1,564,342 $ 210,742,248 $ 2,084,769 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)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Composition of Net Loans	The composition of net loans (in thousands) at September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 63,491 $ 41,134 Farmland 15,985 14,498 1-4 86,516 88,747 Commercial Real Estate 205,968 203,595 Total Real Estate Loans 371,960 347,974 Business Loans: Commercial and Industrial Loans 87,480 66,421 Farm Production and Other Farm Loans 742 907 Total Business Loans 88,222 67,328 Consumer Loans: Credit Cards 1,744 1,648 Other Consumer Loans 11,584 12,372 Total Consumer Loans 13,328 14,020 Total Gross Loans 473,510 429,322 Unearned Income (12 ) (45 ) Allowance for Loan Losses (3,806 ) (3,372 ) Loans, net $ 469,692 $ 425,905
Period-End, Non-Accrual Loans, Segregated by Class	Period-end, non-accrual September 30, 2019 December 31, 2018 Real Estate: Land Development and Construction $ 113 $ — Farmland 246 200 1-4 2,057 1,831 Commercial Real Estate 9,484 7,612 Total Real Estate Loans 11,900 9,643 Business Loans: Commercial and Industrial Loans 363 76 Farm Production and Other Farm Loans 31 31 Total Business Loans 394 107 Consumer Loans: Other Consumer Loans 65 89 Total Consumer Loans 65 89 Total Nonaccrual Loans $ 12,359 $ 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 September 30, 2019, 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 $ 2,218 $ — $ 2,218 $ 61,273 $ 63,491 $ — Farmland 339 — 339 15,646 15,985 — 1-4 1,832 912 2,744 83,772 86,516 220 Commercial Real Estate 1,688 2,335 4,023 201,945 205,968 — Total Real Estate Loans 6,077 3,247 9,324 362,636 371,960 220 Business Loans: Commercial and Industrial Loans 648 262 910 86,570 87,480 — Farm Production and Other Farm Loans — 31 31 711 742 — Total Business Loans 648 293 941 87,281 88,222 — Consumer Loans: Credit Cards 18 47 65 1,679 1,744 47 Other Consumer Loans 141 5 146 11,438 11,584 — Total Consumer Loans 159 52 211 13,117 13,328 47 Total Loans $ 6,884 $ 3,592 $ 10,476 $ 463,034 $ 473,510 $ 267 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 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
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 Outstanding Outstanding Number of Recorded Recorded September 30, 2019 Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,607 Total 3 $ 4,871 $ 2,607 Pre-Modification Post-Modification Outstanding Outstanding Number of Recorded Recorded December 31, 2018 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 of Recorded 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 (175 ) Total at September 30, 2019 3 $ 2,607
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 September 30, 2019: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 59,807 $ 1,716 $ 1,968 $ — $ — $ 63,491 Farmland 14,747 379 859 — — 15,985 1-4 77,590 1,924 7,002 — — 86,516 Commercial Real Estate 165,914 22,631 17,423 — — 205,968 Total Real Estate Loans 318,058 26,650 27,252 — — 371,960 Business Loans: Commercial and Industrial Loans 83,337 144 3,999 — — 87,480 Farm Production and Other Farm Loans 707 — 4 — 31 742 Total Business Loans 84,044 144 4,003 — 31 88,222 Consumer Loans: Credit Cards 1,679 — 65 — — 1,744 Other Consumer Loans 11,380 50 113 41 — 11,584 Total Consumer Loans 13,059 50 178 41 — 13,328 Total Loans $ 415,161 $ 26,844 $ 31,433 $ 41 $ 31 $ 473,510 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 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 nine months ended September 30, 2019: Real Business September 30, 2019 Estate Loans Consumer Total Beginning Balance, January 1, 2019 $ 2,844,681 $ 221,841 $ 305,173 $ 3,371,695 Provision for loan losses (883 ) 269,917 203,002 472,036 Chargeoffs 15,073 91,291 76,972 183,336 Recoveries 101,119 8,858 35,207 145,184 Net (recoveries) chargeoffs (86,046 ) 82,433 41,765 38,152 Ending Balance $ 2,929,844 $ 409,325 $ 466,410 $ 3,805,579 Period end allowance allocated to: Loans individually evaluated for impairment $ 506,560 $ 71,962 $ — $ 578,522 Loans collectively evaluated for impairment 2,423,284 337,363 466,410 3,227,057 Ending Balance, September 30, 2019 $ 2,929,844 $ 409,325 $ 466,410 $ 3,805,579 The following table details activity in the allowance for loan losses by portfolio segment for the nine months ended September 30, 2018: Real Business September 30, 2018 Estate Loans Consumer Total Beginning Balance, January 1, 2018 $ 2,151,715 $ 346,781 $ 520,732 $ 3,019,228 Provision for (reversal of) loan losses 615,927 (289,894 ) (185,268 ) 140,765 Chargeoffs 202,352 31,236 117,401 350,989 Recoveries 91,071 203,777 69,091 363,939 Net chargeoffs (recoveries) 111,281 (172,541 ) 48,310 (12,950 ) Ending Balance $ 2,656,361 $ 229,428 $ 287,154 $ 3,172,943 Period end allowance allocated to: Loans individually evaluated for impairment $ 409,496 $ — $ — $ 409,496 Loans collectively evaluated for impairment 2,246,865 229,428 287,154 2,763,447 Ending Balance, September 30, 2018 $ 2,656,361 $ 229,428 $ 287,154 $ 3,172,943
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 September 30, 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 September 30, 2019 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 11,432 $ 144 $ — $ 11,576 Loans collectively evaluated for general impairment 360,528 88,078 13,328 461,934 $ 371,960 $ 88,222 $ 13,328 $ 473,510 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)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Summary Of Lease Costs	Lease costs were as follows: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2019 (in thousands) Operating lease cost $ 92 $ 277 Short-term lease cost 6 17 Variable lease cost — — $ 98 $ 294
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: Nine Months Ended September 30, 2019 (in thousands) Lease payments due: Within one year $ 348 After one year but within two years 324 After two years but within three years 194 After three year but within four years 21 After four years but within five years — After five years — Total undiscounted cash flows 887 Discount on cash flows (36 ) Total lease liability $ 851

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Summary of Capital Structure Activity [Table Text Block]	The following summarizes the activity in the capital structure of the Company: Accumulated Number Additional 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 Net income — — — — 1,370,742 1,370,742 Dividends paid ($0.24 per share) — — — — (1,178,887 ) (1,178,887 ) Options exercised — — — — — — Restricted stock granted 7,500 1,500 (1,500 ) — — — Stock compensation expense — — 40,694 — — 40,694 Other comprehensive income, net — — — 5,324,717 — 5,324,717 Balance, June 30, 2019 4,912,030 $ 982,406 $ 4,379,037 $ (3,028,174 ) $ 93,803,054 $ 96,136,323 Net income — — — — 1,332,888 1,332,888 Dividends paid ($0.24 per share) — — — — (1,178,887 ) (1,178,887 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 40,369 — — 40,369 Other comprehensive income, net — — — 2,668,372 — 2,668,372 Balance, September 30, 2019 4,912,030 $ 982,406 $ 4,419,406 $ (359,802 ) $ 93,957,055 $ 98,999,065 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 Net income — — — — 1,688,140 1,688,140 Dividends paid ($0.24 per share) — — — — (1,177,087 ) (1,177,087 ) Options exercised 2,325 465 26,535 — — 27,000 Restricted stock granted 7,500 1,500 (1,500 ) — — — Stock compensation expense — — 42,581 — — 42,581 Other comprehensive income, net — — — (924,159 ) — (924,159 ) Balance, June 30, 2018 4,904,530 $ 980,906 $ 4,215,811 $ (16,218,436 ) $ 92,703,090 $ 81,681,371 Net income — — — — 1,496,794 1,496,794 Dividends paid ($0.24 per share) — — — — (1,177,088 ) (1,177,088 ) Options exercised — — — — — — Restricted stock granted — — — — — — Stock compensation expense — — 41,344 — — 41,344 Other comprehensive income, net — — — (2,247,919 ) — (2,247,919 ) Balance, September 30, 2018 4,904,530 980,906 4,257,155 (18,466,355 ) 93,022,796 79,794,502

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 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 $ — $ 97,981,140 $ — $ 97,981,140 Mortgage-backed securities — 275,598,313 — 275,598,313 State, county and municipal obligations — 60,566,116 — 60,566,116 Total $ — $ 434,145,569 $ — $ 434,145,569 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
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 September 30, 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 $ — $ — $ 3,819,908 $ 3,819,908 Total $ — $ — $ 3,819,908 $ 3,819,908 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 Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs 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 September 30, 2019: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Total Carrying Identical Observable Unobservable Fair September 30, 2019 Value Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 21,106,679 $ 21,106,679 $ — $ — $ 21,106,679 Interest bearing deposits with banks 61,234,815 61,234,815 — — 61,234,815 Securities available-for-sale 434,145,569 — 434,145,569 — 434,145,569 Net loans 469,692,103 — — 466,369,797 466,369,797 Financial liabilities Deposits $ 794,314,007 $ 573,774,335 $ 222,487,675 $ — $ 796,262,010 Securities sold under agreement to repurchase 144,502,629 144,502,629 — — 144,502,629 The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at December 31, 2018: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Total Carrying Identical Observable Unobservable Fair December 31, 2018 Value Assets Inputs Inputs 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 September 30, 2019 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Significant Unobservable Inputs Range of Financial instrument Fair Value Valuation Technique Impaired loans $ 3,819,908 Appraised value of collateral less 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	Sep. 30, 2019	Jan. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
Operating lease liability	$ 851
Operating lease right-of-use ("ROU")	$ 851,000
ASU 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease liability		$ 1,086
Operating lease right-of-use ("ROU")		$ 1,086

Mergers and Acquisitions - Addi

Mergers and Acquisitions - Additional Information (Detail) - Charter Bank [Member] - Subsequent Event [Member] $ in Millions	Oct. 01, 2019USD ($)Locationshares
Business combination transaction value	$ 19.7
common stock issued In business combination | shares	666,099
Cash transferred	$ 6.1
Assets and liabilities acquired net	149
loans acquired	104
deposits acquired	$ 126
Number of properties acquired | Location	4

Commitments and Contingent Li_2

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Loan commitments	$ 70,933,230	$ 58,835,208
Letters of credit outstanding	$ 2,435,810	$ 2,516,810

Net Income per Share - Earnings

Net Income per Share - Earnings Per Share (Detail) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	4,900,030			4,899,520			4,896,871	4,888,372
Dilutive effect of granted options	1,465			5,093			2,321	9,586
Diluted weighted average shares outstanding	4,901,495			4,904,613			4,899,192	4,897,958
Net income	$ 1,332,888	$ 1,370,742	$ 1,226,771	$ 1,496,794	$ 1,688,140	$ 1,772,387	$ 3,930,401	$ 4,957,321
Net income per share-basic	$ 0.27			$ 0.31			$ 0.80	$ 1.01
Net income per share-diluted	$ 0.27			$ 0.31			$ 0.80	$ 1.01

Equity Compensation Plans - Add

Equity Compensation Plans - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2019USD ($)shares
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock restriction period	1 year
Restricted stock grants | shares	7,500
Restricted stock grant date fair value	$ 161,475
Directors Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options outstanding	25,920
2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options outstanding	$ 0

Equity Compensation Plans -Summ

Equity Compensation Plans -Summary of Stock Option Activity (Detail)	9 Months Ended
	Sep. 30, 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	(12,000)
Ending Balance | shares	40,500
Weighted Average Exercise Price
Beginning Balance | $ / shares	$ 21.55
Granted | $ / shares	0
Exercised | $ / shares	0
Expired | $ / shares	21.75
Ending Balance | $ / shares	$ 21.49

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 211,925	$ 260,475	$ 726,615	$ 888,215
Effective tax rate	13.70%	14.80%	15.60%	15.20%

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Securities at carrying value	$ 376,127,226	$ 357,231,440

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Securities Available-for-Sale (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 434,624,985	$ 464,699,289
Gross Unrealized Gains	1,605,353	72,809
Gross Unrealized Losses	2,084,769	20,025,644
Estimated Fair Value	434,145,569	444,746,454
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	98,400,709	99,365,930
Gross Unrealized Gains	22,134
Gross Unrealized Losses	441,703	3,388,147
Estimated Fair Value	97,981,140	95,977,783
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	276,342,668	259,742,501
Gross Unrealized Gains	839,052	4,921
Gross Unrealized Losses	1,583,407	12,373,269
Estimated Fair Value	275,598,313	247,374,153
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	59,881,608	105,590,858
Gross Unrealized Gains	744,167	67,888
Gross Unrealized Losses	59,659	4,264,228
Estimated Fair Value	$ 60,566,116	$ 101,394,518

Securities - Amortized Cost a_2

Securities - Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Available-for-sale, Amortized Cost
Due in one year or less	$ 345,000	$ 1,875,288
Due after one year through five years	95,296,476	91,948,838
Due after five years through ten years	12,338,444	32,801,788
Due after ten years	50,302,397	78,330,873
Total Amortized Cost	434,624,985	464,699,289
Available-for-sale, Estimated Fair Value
Due in one year or less	344,200	1,877,665
Due after one year through five years	94,888,785	89,121,194
Due after five years through ten years	12,457,030	31,718,293
Due after ten years	50,857,242	74,655,149
Total Fair Value	434,145,569	444,746,454
Residential Mortgage Backed Securities [Member]
Available-for-sale, Amortized Cost
Total Amortized Cost	217,007,709	187,776,954
Available-for-sale, Estimated Fair Value
Total Fair Value	216,247,964	179,235,806
Commercial Mortgage Backed Securities [Member]
Available-for-sale, Amortized Cost
Total Amortized Cost	59,334,959	71,965,548
Available-for-sale, Estimated Fair Value
Total Fair Value	$ 59,350,348	$ 68,138,347

Securities - Summary of Unreali

Securities - Summary of Unrealized Loss Information for Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 78,269,126	$ 24,881,600
Less than 12 months Unrealized Losses	520,427	464,556
12 months or more Fair Value	132,473,122	407,442,229
12 months or more Unrealized Losses	1,564,342	19,561,088
Total Fair Value	210,742,248	432,323,829
Total Unrealized Losses	2,084,769	20,025,644
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	38,652,471
Less than 12 months Unrealized Losses	308,973
12 months or more Fair Value	20,367,270	95,977,783
12 months or more Unrealized Losses	132,730	3,388,147
Total Fair Value	59,019,741	95,977,783
Total Unrealized Losses	441,703	3,388,147
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	32,441,833	12,257,636
Less than 12 months Unrealized Losses	187,039	179,281
12 months or more Fair Value	108,373,816	234,928,705
12 months or more Unrealized Losses	1,396,368	12,193,988
Total Fair Value	140,815,649	247,186,341
Total Unrealized Losses	1,583,407	12,373,269
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	7,174,822	12,623,964
Less than 12 months Unrealized Losses	24,415	285,275
12 months or more Fair Value	3,732,036	76,535,741
12 months or more Unrealized Losses	35,244	3,978,953
Total Fair Value	10,906,858	89,159,705
Total Unrealized Losses	$ 59,659	$ 4,264,228

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($)	Sep. 30, 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 - Composition of Net Loan

Loans - Composition of Net Loans (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	$ 473,510,000	$ 429,322,000
Unearned Income	(12,000)	(45,000)
Allowance for Loan Losses	(3,805,579)	(3,371,695)	$ (3,172,943)	$ (3,019,228)
Loans, net	469,692,103	425,905,093
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	371,960,000	347,974,000
Total Gross Loans	371,960,000	347,974,000
Allowance for Loan Losses	(2,929,844)	(2,844,681)	(2,656,361)	(2,151,715)
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	63,491,000	41,134,000
Total Gross Loans	63,491,000	41,134,000
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	15,985,000	14,498,000
Total Gross Loans	15,985,000	14,498,000
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	86,516,000	88,747,000
Total Gross Loans	86,516,000	88,747,000
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	205,968,000	203,595,000
Total Gross Loans	205,968,000	203,595,000
Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	88,222,000	67,328,000
Total Gross Loans	88,222,000	67,328,000
Allowance for Loan Losses	(409,325)	(221,841)	(229,428)	(346,781)
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	87,480,000	66,421,000
Total Gross Loans	87,480,000	66,421,000
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	742,000	907,000
Total Gross Loans	742,000	907,000
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	13,328,000	14,020,000
Allowance for Loan Losses	(466,410)	(305,173)	$ (287,154)	$ (520,732)
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	1,744,000	1,648,000
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	$ 11,584,000	$ 12,372,000

Loans - Period-End Non-Accrual

Loans - Period-End Non-Accrual Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 12,359	$ 9,839
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	11,900	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	246	200
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	2,057	1,831
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	9,484	7,612
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	394	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	363	76
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	65	89
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 65	$ 89

Loans - Aging Analysis of Past

Loans - Aging Analysis of Past Due Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	$ 6,884	$ 8,697
Total Past Due Loans	10,476	12,149
Current Loans	463,034	417,173
Total Gross Loans	473,510	429,322
Accruing Loans 90 or more Days Past Due	267	73
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	6,077	6,788
Total Past Due Loans	9,324	10,182
Current Loans	362,636	337,792
Total Gross Loans	371,960	347,974
Accruing Loans 90 or more Days Past Due	220	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	2,218	1,494
Total Past Due Loans	2,218	1,548
Current Loans	61,273	39,586
Total Gross Loans	63,491	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	339	779
Total Past Due Loans	339	808
Current Loans	15,646	13,690
Total Gross Loans	15,985	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	1,832	3,456
Total Past Due Loans	2,744	3,786
Current Loans	83,772	84,961
Total Gross Loans	86,516	88,747
Accruing Loans 90 or more Days Past Due	220
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	1,688	1,059
Total Past Due Loans	4,023	4,040
Current Loans	201,945	199,555
Total Gross Loans	205,968	203,595
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	648	1,681
Total Past Due Loans	941	1,702
Current Loans	87,281	65,626
Total Gross Loans	88,222	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	648	1,672
Total Past Due Loans	910	1,693
Current Loans	86,570	64,728
Total Gross Loans	87,480	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		9
Total Past Due Loans	31	9
Current Loans	711	898
Total Gross Loans	742	907
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	159	228
Total Past Due Loans	211	265
Current Loans	13,117	13,755
Total Gross Loans	13,328	14,020
Accruing Loans 90 or more Days Past Due	47	19
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	18	16
Total Past Due Loans	65	20
Current Loans	1,679	1,628
Total Gross Loans	1,744	1,648
Accruing Loans 90 or more Days Past Due	47	4
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	141	212
Total Past Due Loans	146	245
Current Loans	11,438	12,127
Total Gross Loans	11,584	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	3,592	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	3,247	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
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		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	912	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	2,335	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	293	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	262	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	52	37
Loans 90 or more Days Past Due [Member] | Consumer Portfolio Segment [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	31
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	47	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	$ 5	$ 33

Loans - Impaired Loans, Segrega

Loans - Impaired Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 13,292	$ 12,023
Recorded Investment With No Allowance	7,177	6,540
Recorded Investment With Allowance	4,399	3,766
Total Recorded Investment	11,576	10,306
Related Allowance	578	401
Average Recorded Investment	10,941	7,352
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	13,148	10,601
Recorded Investment With No Allowance	7,177	5,209
Recorded Investment With Allowance	4,255	3,675
Total Recorded Investment	11,432	8,884
Related Allowance	506	374
Average Recorded Investment	10,869	6,489
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	113
Recorded Investment With No Allowance	59
Recorded Investment With Allowance	54
Total Recorded Investment	113
Related Allowance	17
Average Recorded Investment	57
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	253	269
Recorded Investment With No Allowance	253	269
Total Recorded Investment	253	269
Average Recorded Investment	261	135
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	863	1,153
Recorded Investment With No Allowance	761	1,062
Recorded Investment With Allowance	102	91
Total Recorded Investment	863	1,153
Related Allowance	30	27
Average Recorded Investment	1,008	728
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	11,919
Recorded Investment With No Allowance	6,104
Recorded Investment With Allowance	4,099
Total Recorded Investment	10,203
Related Allowance	459
Average Recorded Investment	9,544
Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	144	12,023
Recorded Investment With No Allowance		6,540
Recorded Investment With Allowance	144	3,766
Total Recorded Investment	144	10,306
Related Allowance	72	401
Average Recorded Investment	72	$ 7,352
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	144
Recorded Investment With Allowance	144
Total Recorded Investment	144
Related Allowance	72
Average Recorded Investment	$ 72

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings Segregated by Class (Detail) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 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	$ 2,607	$ 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	$ 2,607	$ 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	$ 2,607	$ 2,782

Loans - Changes in Troubled Deb

Loans - Changes in Troubled Debt Restructurings (Detail) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019USD ($)Loan	Dec. 31, 2018USD ($)Loan	Dec. 31, 2017USD ($)Loan
Receivables [Abstract]
Number of Loans | Loan	3	3	3
Principal paydowns, Recorded Investment	$ (175)	$ (265)
Post-Modification Outstanding Recorded Investment	$ 2,607	$ 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	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 473,510	$ 429,322
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	371,960	347,974
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	63,491	41,134
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,985	14,498
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	86,516	88,747
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	205,968	203,595
Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	88,222	67,328
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	87,480	66,421
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	742	907
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	13,328	14,020
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,744	1,648
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	11,584	12,372
Satisfactory 1, 2, 3, 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	415,161	383,529
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	318,058	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	59,807	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	14,747	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	77,590	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	165,914	172,217
Satisfactory 1, 2, 3, 4 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	84,044	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	83,337	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	707	876
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	13,059	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	1,679	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	11,380	12,181
Special Mention 5,6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	26,844	21,014
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	26,650	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	1,716	840
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	379	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	1,924	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	22,631	17,938
Special Mention 5,6 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	144	81
Special Mention 5,6 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	144	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	50	65
Special Mention 5,6 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	50	65
Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	31,433	24,724
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	27,252	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	1,968	568
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	859	911
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	7,002	7,337
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	17,423	13,440
Substandard 7 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	4,003	2,377
Substandard 7 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	3,999	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	4	31
Substandard 7 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	178	91
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	65	20
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	113	71
Doubtful 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	41	55
Doubtful 8 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	41	55
Doubtful 8 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	41	$ 55
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	31
Loss [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0
Loss [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0
Loss [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	31
Loss [Member] | Consumer Portfolio Segment [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 31

Loans - Detailed Activity in Al

Loans - Detailed Activity in Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance			$ 3,371,695	$ 3,019,228
(Reversal of) provision for loan losses	$ 11,738	$ 288,576	472,036	140,765
Chargeoffs			183,336	350,989
Recoveries			145,184	363,939
Net chargeoffs (recoveries)			38,152	(12,950)
Ending Balance	3,805,579	3,172,943	3,805,579	3,172,943
Loans individually evaluated for impairment					$ 578,522	$ 409,496
Loans collectively evaluated for impairment					3,227,057	2,763,447
Ending Balance	3,805,579	3,172,943	3,805,579	3,019,228	3,805,579	3,172,943
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			(883)	615,927
Chargeoffs			15,073	202,352
Recoveries			101,119	91,071
Net chargeoffs (recoveries)			(86,046)	111,281
Ending Balance	2,929,844	2,656,361	2,929,844	2,656,361
Loans individually evaluated for impairment					506,560	409,496
Loans collectively evaluated for impairment					2,423,284	2,246,865
Ending Balance	2,929,844	2,656,361	2,844,681	2,151,715	2,929,844	2,656,361
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance			221,841	346,781
(Reversal of) provision for loan losses			269,917	(289,894)
Chargeoffs			91,291	31,236
Recoveries			8,858	203,777
Net chargeoffs (recoveries)			82,433	(172,541)
Ending Balance	409,325	229,428	409,325	229,428
Loans individually evaluated for impairment					71,962
Loans collectively evaluated for impairment					337,363	229,428
Ending Balance	409,325	229,428	221,841	346,781	409,325	229,428
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance			305,173	520,732
(Reversal of) provision for loan losses			203,002	(185,268)
Chargeoffs			76,972	117,401
Recoveries			35,207	69,091
Net chargeoffs (recoveries)			41,765	48,310
Ending Balance	466,410	287,154	466,410	287,154
Loans collectively evaluated for impairment					466,410	287,154
Ending Balance	$ 466,410	$ 287,154	$ 305,173	$ 520,732	$ 466,410	$ 287,154

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	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	$ 11,576	$ 10,306
Loans collectively evaluated for general impairment	461,934	419,016
Total Gross Loans	473,510	429,322
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	11,432	10,306
Loans collectively evaluated for general impairment	360,528	337,668
Total Gross Loans	371,960	347,974
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	144	0
Loans collectively evaluated for general impairment	88,078	67,328
Total Gross Loans	88,222	67,328
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for general impairment	13,328	14,020
Total Gross Loans	$ 13,328	$ 14,020

Premises and Equipment - Summar

Premises and Equipment - Summary of Lease Costs (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Operating lease cost	$ 92	$ 277
Short-term lease cost	6	17
Total lease cost	$ 98	$ 294

Premises and Equipment - Maturi

Premises and Equipment - Maturities of Operating Lease Liabilities (Detail) $ in Thousands	Sep. 30, 2019USD ($)
Lease payments due:
Within one year	$ 348
After one year but within two years	324
After two years but within three years	194
After three year but within four years	21
Total undiscounted cash flows	887
Discount on cash flows	(36)
Total lease liability	$ 851

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) $ in Millions	Sep. 30, 2019USD ($)
Operating lease right-of-use ("ROU")	$ 851
Weighted average remaining lease term	1 year 4 months 24 days
Weighted average discount rate	3.30%

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Capital Structure Activity (Detail) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Beginning Balance	$ 96,136,323	$ 90,579,057	$ 83,866,317	$ 81,681,371	$ 82,024,896	$ 88,451,040	$ 83,866,317	$ 88,451,040
Net income	1,332,888	1,370,742	1,226,771	1,496,794	1,688,140	1,772,387	3,930,401	4,957,321
Dividends paid	(1,178,887)	(1,178,887)	(1,177,087)	(1,177,088)	(1,177,087)	(1,174,729)
Options exercised					27,000
Stock compensation expense	40,369	40,694	41,344	41,344	42,581	45,056
Other comprehensive income, net	2,668,372	5,324,717	6,621,712	(2,247,919)	(924,159)	(7,068,858)	14,614,801	(10,240,936)
Ending Balance	98,999,065	96,136,323	90,579,057	79,794,502	81,681,371	82,024,896	98,999,065	79,794,502
Common Stock
Beginning Balance	$ 982,406	$ 980,906	$ 980,906	$ 980,906	$ 978,941	$ 978,941	$ 980,906	$ 978,941
Beginning Balance (in shares)	4,912,030	4,904,530	4,904,530	4,904,530	4,894,705	4,894,705	4,904,530	4,894,705
Options exercised					$ 465
Options exercised (in shares)					2,325
Restricted stock granted		$ 1,500			$ 1,500
Restricted stock granted (in shares)		7,500			7,500
Ending Balance	$ 982,406	$ 982,406	$ 980,906	$ 980,906	$ 980,906	$ 978,941	$ 982,406	$ 980,906
Ending Balance (in shares)	4,912,030	4,912,030	4,904,530	4,904,530	4,904,530	4,894,705	4,912,030	4,904,530
Additional Paid-In Capital
Beginning Balance	$ 4,379,037	$ 4,339,843	$ 4,298,499	$ 4,215,811	$ 4,148,195	$ 4,103,139	$ 4,298,499	$ 4,103,139
Options exercised					26,535
Restricted stock granted		(1,500)			(1,500)
Stock compensation expense	40,369	40,694	41,344	41,344	42,581	45,056
Ending Balance	4,419,406	4,379,037	4,339,843	4,257,155	4,215,811	4,148,195	4,419,406	4,257,155
Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(3,028,174)	(8,352,891)	(14,974,603)	(16,218,436)	(15,294,277)	(8,225,419)	(14,974,603)	(8,225,419)
Other comprehensive income, net	2,668,372	5,324,717	6,621,712	(2,247,919)	(924,159)	(7,068,858)
Ending Balance	(359,802)	(3,028,174)	(8,352,891)	(18,466,355)	(16,218,436)	(15,294,277)	(359,802)	(18,466,355)
Retained Earnings
Beginning Balance	93,803,054	93,611,199	93,561,515	92,703,090	92,192,037	91,594,379	93,561,515	91,594,379
Net income	1,332,888	1,370,742	1,226,771	1,496,794	1,688,140	1,772,387
Dividends paid	(1,178,887)	(1,178,887)	(1,177,087)	(1,177,088)	(1,177,087)	(1,174,729)
Ending Balance	$ 93,957,055	$ 93,803,054	$ 93,611,199	$ 93,022,796	$ 92,703,090	$ 92,192,037	$ 93,957,055	$ 93,022,796

Shareholders' Equity - Summar_2

Shareholders' Equity - Summary of Capital Structure Activity (Detail) (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Dividends paid, per share	$ 0.24	$ 0.24	$ 0.24	$ 0.24	$ 0.24	$ 0.24	$ 0.72	$ 0.72

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 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	11,576,000	10,306,000
Impaired loans, allowance for loan losses	578,000	401,000
Fair value adjustment to OREO due to declines or impairment after foreclosure	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 434,145,569	$ 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	97,981,140	95,977,783
Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	275,598,313	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	60,566,116	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	434,145,569	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	434,145,569	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	97,981,140	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	275,598,313	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	60,566,116	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	434,145,569	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	97,981,140	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	275,598,313	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	$ 60,566,116	$ 101,394,518

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Asset Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)	Sep. 30, 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	$ 3,819,908	$ 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	3,819,908	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	3,819,908	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	$ 3,819,908	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_6

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 ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 3,819,908	$ 3,553,147
Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 3,819,908	$ 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_7

Fair Value of Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Financial assets
Cash and due from banks	$ 21,106,679	$ 12,592,130
Interest bearing deposits with banks	61,234,815	8,079,742
Securities available-for-sale	434,145,569	444,746,454
Net loans	466,369,797	420,992,074
Financial liabilities
Deposits	796,262,010	755,462,961
Securities Sold under Agreement to Repurchase	144,502,629	107,965,505
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets
Cash and due from banks	21,106,679	12,592,130
Interest bearing deposits with banks	61,234,815	8,079,742
Financial liabilities
Deposits	573,774,335	544,985,869
Securities Sold under Agreement to Repurchase	144,502,629	107,965,505
Significant Other Observable Inputs (Level 2) [Member]
Financial assets
Securities available-for-sale	434,145,569	444,746,454
Financial liabilities
Deposits	222,487,675	210,477,092
Significant Unobservable Inputs (Level 3) [Member]
Financial assets
Net loans	466,369,797	420,992,074
Carrying Value [Member]
Financial assets
Cash and due from banks	21,106,679	12,592,130
Interest bearing deposits with banks	61,234,815	8,079,742
Securities available-for-sale	434,145,569	444,746,454
Net loans	469,692,103	425,905,093
Financial liabilities
Deposits	794,314,007	756,221,510
Securities Sold under Agreement to Repurchase	$ 144,502,629	$ 107,965,505