Citizens Holding (CIZN) 10-Q 9 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 06, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
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		4,912,030

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($)	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 21,754,884	$ 12,592,130
Interest bearing deposits with other banks	1,193,764	8,079,742
Investment securities available for sale, at fair value	483,906,292	444,746,454
Loans, net of allowance for loan losses of $3,821,473 in 2019 and $3,371,695 in 2018	461,914,254	425,905,093
Premises and equipment, net	20,169,558	19,717,305
Other real estate owned, net	3,383,444	3,440,148
Accrued interest receivable	4,400,453	4,165,783
Cash surrender value of life insurance	25,706,254	25,383,931
Deferred tax assets, net	2,789,557	6,633,539
Other assets	8,812,480	7,965,952
TOTAL ASSETS	1,034,030,940	958,630,077
Deposits:
Noninterest-bearing demand	165,655,475	170,029,729
Interest-bearing NOW and money market accounts	331,589,279	298,220,430
Savings deposits	77,686,521	76,735,710
Certificates of deposit	219,927,045	211,235,641
Total deposits	794,858,320	756,221,510
Securities sold under agreement to repurchase	119,327,404	107,965,505
Federal funds purchased	12,000,000
Accrued interest payable	706,261	470,710
Deferred compensation payable	9,225,972	9,052,972
Other liabilities	1,776,660	1,053,063
Total liabilities	937,894,617	874,763,760
SHAREHOLDERS' EQUITY
Common stock, $0.20 par value, 22,500,000 shares authorized, 4,912,030 shares issued and outstanding at June 30, 2019 and 4,904,530 at December 31, 2018	982,406	980,906
Additional paid-in capital	4,379,037	4,298,499
Retained earnings	93,803,054	93,561,515
Accumulated other comprehensive loss, net of tax benefit of $1,006,701 at June 30, 2019 and $4,978,232 at December 31, 2018	(3,028,174)	(14,974,603)
Total shareholders' equity	96,136,323	83,866,317
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,034,030,940	$ 958,630,077

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Loans, allowance for loan losses	$ 3,821,473	$ 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	$ 1,006,701	$ 4,978,232

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
INTEREST INCOME
Interest and fees on loans	$ 5,830,411	$ 4,984,492	$ 11,279,946	$ 9,700,911
Interest on securities
Taxable	2,225,591	1,438,596	4,307,596	4,261,284
Nontaxable	512,869	1,295,828	1,129,648	1,295,828
Other interest	81,673	60,060	316,779	120,344
Total interest income	8,650,544	7,778,976	17,033,969	15,378,367
INTEREST EXPENSE
Deposits	1,916,769	515,506	3,645,441	1,016,715
Other borrowed funds	527,823	311,034	972,850	604,466
Total interest expense	2,444,592	826,540	4,618,291	1,621,181
NET INTEREST INCOME	6,205,952	6,952,436	12,415,678	13,757,186
PROVISION FOR (REVERSAL OF) LOAN LOSSES	264,819	88,962	460,298	(147,811)
NET INTEREST INCOME AFTER PROVISION FOR (REVERSAL OF) LOAN LOSSES	5,941,133	6,863,474	11,955,380	13,904,997
OTHER INCOME
Other operating income	256,255	294,097	522,834	582,470
Total other income	2,072,178	2,078,410	4,119,089	4,178,840
OTHER EXPENSES
Salaries and employee benefits	3,469,724	3,675,422	7,016,393	7,343,279
Occupancy expense	1,409,862	1,361,622	2,832,289	2,887,001
Other expense	1,443,463	1,910,845	3,113,584	3,765,290
Total other expenses	6,323,049	6,947,889	12,962,266	13,995,570
INCOME BEFORE PROVISION FOR INCOME TAXES	1,690,262	1,993,995	3,112,203	4,088,267
PROVISION FOR INCOME TAXES	319,520	305,855	514,690	627,740
NET INCOME	$ 1,370,742	$ 1,688,140	$ 2,597,513	$ 3,460,527
NET INCOME PER SHARE -Basic	$ 0.28	$ 0.35	$ 0.53	$ 0.71
NET INCOME PER SHARE -Diluted	0.28	0.35	0.53	0.71
DIVIDENDS PAID PER SHARE	$ 0.24	$ 0.24	$ 0.48	$ 0.48
Deposit Account [Member]
OTHER INCOME
Other income	$ 1,046,255	$ 1,067,260	$ 2,142,947	$ 2,210,853
Financial Service, Other [Member]
OTHER INCOME
Other income	$ 769,668	$ 717,053	$ 1,453,308	$ 1,385,517

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 1,370,742	$ 1,688,140	$ 2,597,513	$ 3,460,527
Securities available-for-sale
Unrealized holding gains (losses)	7,149,042	(1,245,076)	15,972,109	(10,661,302)
Income tax effect	(1,783,686)	310,646	(3,985,041)	2,659,994
Net unrealized (losses) gains	5,365,356	(934,430)	11,987,068	(8,001,308)
Rclassification adjustment for (losses) gains included in net income	(54,149)	3,026	(54,149)	11,047
Income tax effect	13,510	(755)	13,510	(2,756)
Net gains included in net income	(40,639)	2,271	(40,639)	8,291
Total other comprehensive income (loss)	5,324,717	(932,159)	11,946,429	(7,993,017)
Comprehensive income (loss)	$ 6,695,459	$ 755,981	$ 14,543,942	$ (4,532,490)

Condensed Consolidated Statemen

Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net cash provided by operating activities	$ 5,293,805	$ 5,402,261
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from maturities and calls of securities available for sale	23,344,865	21,903,064
Proceeds from sale of investment securities	60,110,779	17,609,891
Purchases of investment securities available for sale	(108,814,987)	(10,550,000)
Purchases of bank premises and equipment	(879,034)	(48,702)
Proceeds from sales of bank premises and equipment		264,000
Decrease in interest bearing deposits with other banks	6,885,978	239,241
Proceeds from sale of other real estate	170,356	782,095
Net increase in loans	(36,591,743)	(15,151,283)
Net cash (used in) provided by investing activities	(55,773,786)	15,048,306
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	38,636,810	43,925,481
Net change in securities sold under agreement to repurchase	11,361,899	(68,372,991)
Increase in federal funds purchased	12,000,000	11,000,000
Repayment of Federal Home Loan Bank advances		(10,000,000)
Proceeds from exercise of stock options		27,000
Payment of dividends	(2,355,974)	(2,351,816)
Net cash provided by (used in) financing activities	59,642,735	(25,772,326)
Net increase (decrease) in cash and due from banks	9,162,754	(5,321,759)
Cash and due from banks, beginning of period	12,592,130	17,962,990
Cash and due from banks, end of period	$ 21,754,884	$ 12,641,231

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 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 June 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 Company. The Company is also subject to the regulations of the Federal Reserve. The area served by the Bank is east central and southern counties of Mississippi and the surrounding areas. Services are provided at several branch offices. Estimates The preparation of 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 to information about past events and current conditions. The standard provides significant flexibility and requires a high degree of judgment with regards to pooling financial assets with similar risk characteristics, determining the contractual terms of said financial assets and adjusting the relevant historical loss information in order to develop an estimate of expected lifetime losses. In addition, ASU 2016-13 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	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Mergers and Acquisitions	Note 2. Mergers and Acquisitions Merger with Charter Bank On May 21, 2019, the Company, the Bank and Charter Bank (“Charter”) entered into an agreement and plan of merger pursuant to which Charter will merge with and into the Bank. Under the terms of the merger agreement, each Charter shareholder will have the right to receive 0.39417 shares of the Company’s common stock and $3.615 in cash for each outstanding share of Charter common stock. The aggregate purchase price is estimated to be approximately $20.0 million, based on our closing price of $20.76 on August 1, 2019. The transaction is expected to close in the fourth quarter of 2019 and is subject to customary conditions set forth in the merger agreement, including the receipt of regulatory approvals and approval by a majority of Charter’s shareholders.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 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 June 30, 2019, the Corporation had entered into loan commitments with certain customers with an aggregate unused balance of $57,647,121 compared to an aggregate unused balance of $58,835,208 at December 31, 2018. There were $2,492,810 of letters of credit outstanding at June 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 and into its asset and liability management program. The Corporation is a party to lawsuits and other claims that arise in the ordinary course of business, all of which are being vigorously contested. In the regular course of business, management evaluates estimated losses or costs related to litigation, and provisions are made for anticipated losses whenever management believes that such losses are probable and can be reasonably estimated. At the present time, management believes, based on the advice of legal counsel, that the final resolution of pending legal proceedings will not likely have a material impact on the Corporation’s consolidated financial condition or results of operations.

Net Income per Share

Net Income per Share	6 Months Ended
	Jun. 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 Six Months Ended June 30, Ended June 30, 2019 2018 2019 2018 Basic weighted average shares outstanding 4,897,970 4,889,772 4,895,265 4,886,258 Dilutive effect of granted options 2,921 5,020 2,697 7,729 Diluted weighted average shares outstanding 4,900,891 4,894,792 4,897,962 4,893,987 Net income $ 1,370,742 $ 1,688,140 $ 2,597,513 $ 3,460,527 Net income per share-basic $ 0.28 $ 0.35 $ 0.53 $ 0.71 Net income per share-diluted $ 0.28 $ 0.35 $ 0.53 $ 0.71

Equity Compensation Plans

Equity Compensation Plans	6 Months Ended
	Jun. 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 six months ended June 30, 2019: Directors’ Plan 2013 Plan Number of Weighted Number of Weighted Outstanding at December 31, 2018 52,500 $ 21.55 — $ — Granted — — — — Exercised — — — — Expired (12,000 ) 21.75 — — Outstanding at June 30, 2019 40,500 $ 21.49 — $ — The intrinsic value of options outstanding under the Directors’ Plan at June 30, 2019, was $33,480. No options were outstanding under the 2013 Plan as of June 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

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 6. Income Taxes For the three months ended June 30, 2019 and 2018, the Company recorded a provision for income taxes totaling $319 thousand and $306 thousand, respectively. The effective tax rate was 18.9% and 15.3% for the three months ending June 30, 2019 and 2018, respectively. For the six months ended June 30, 2019 and 2018, the Company recorded a provision for income taxes totaling $515 thousand and $628 thousand, respectively. The effective tax rate was 16.5% and 15.4% for the six months ending June 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	6 Months Ended
	Jun. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Note 7. Securities The amortized cost and estimated fair value of securities available-for-sale June 30, 2019 Amortized Gross Gross Estimated Fair Securities available-for-sale Obligations of U.S. Government agencies $ 98,909,861 $ 90,238 $ 255,641 $ 98,744,458 Mortgage backed securities 325,660,233 271,572 3,948,147 321,983,658 State, County, Municipals 63,371,075 329,930 522,829 63,178,176 Total $ 487,941,169 $ 691,740 $ 4,726,617 $ 483,906,292 December 31, 2018 Amortized Gross Gross Estimated Fair 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 June 30, 2019 and December 31, 2018, securities with a carrying value of $357,072,500 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 June 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. June 30, 2019 December 31, 2018 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 784,744 $ 786,283 $ 1,875,288 $ 1,877,665 Due after one year through five years 91,101,901 90,842,206 91,948,838 89,121,194 Due after five years through ten years 17,737,676 17,899,263 32,801,788 31,718,293 Due after ten years 52,656,615 52,394,882 78,330,873 74,655,149 Residential mortgage backed securities 257,852,024 254,499,198 187,776,954 179,235,806 Commercial mortgage backed securities 67,808,209 67,484,460 71,965,548 68,138,347 Total $ 487,941,169 $ 483,906,292 $ 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, June 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 $ — $ — $ 40,203,509 $ 255,641 $ 40,203,509 $ 255,641 Mortgage backed securities 55,354,535 389,940 207,450,160 3,558,207 262,804,695 3,948,147 State, County, Municipal — — 42,287,189 522,829 42,287,189 522,829 Total $ 55,354,535 $ 389,940 $ 289,940,858 $ 4,336,677 $ 345,295,393 $ 4,726,617 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	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Loans	Note 8. Loans The composition of net loans (in thousands) at June 30, 2019 and December 31, 2018 was as follows: June 30, December 31, Real Estate: Land Development and Construction $ 54,574 $ 41,134 Farmland 16,649 14,498 1-4 86,861 88,747 Commercial Real Estate 203,205 203,595 Total Real Estate Loans 361,289 347,974 Business Loans: Commercial and Industrial Loans 90,597 66,421 Farm Production and Other Farm Loans 746 907 Total Business Loans 91,343 67,328 Consumer Loans: Credit Cards 1,666 1,648 Other Consumer Loans 11,457 12,372 Total Consumer Loans 13,123 14,020 Total Gross Loans 465,755 429,322 Unearned Income (20 ) (45 ) Allowance for Loan Losses (3,821 ) (3,372 ) Loans, net $ 461,914 $ 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 June 30, December 31, Real Estate: Land Development and Construction $ 113 $ — Farmland 263 200 1-4 2,030 1,831 Commercial Real Estate 8,375 7,612 Total Real Estate Loans 10,781 9,643 Business Loans: Commercial and Industrial Loans 273 76 Farm Production and Other Farm Loans 31 31 Total Business Loans 304 107 Consumer Loans: Other Consumer Loans 71 89 Total Consumer Loans 71 89 Total Nonaccrual Loans $ 11,156 $ 9,839 An aging analysis of past due loans (in thousands), segregated by class, as of June 30, 2019, was as follows: Loans 30-89 Days Loans Total Past Current Total Loans Accruing Real Estate: Land Development and Construction $ 1,612 $ 113 $ 1,725 $ 52,849 $ 54,574 $ — Farmland 279 — 279 16,370 16,649 — 1-4 2,197 526 2,723 84,138 86,861 — Commercial Real Estate 724 4,019 4,743 198,462 203,205 — Total Real Estate Loans 4,812 4,658 9,470 351,819 361,289 — Business Loans: Commercial and Industrial Loans 345 189 534 90,063 90,597 26 Farm Production and Other Farm Loans 49 — 49 697 746 — Total Business Loans 394 189 583 90,760 91,343 26 Consumer Loans: Credit Cards 52 18 70 1,596 1,666 18 Other Consumer Loans 226 3 229 11,228 11,457 — Total Consumer Loans 278 21 299 12,824 13,123 18 Total Loans $ 5,484 $ 4,868 $ 10,352 $ 455,403 $ 465,755 $ 44 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 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 June 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 $ 18 $ 57 Farmland 261 261 — 261 — $ 265 1-4 803 714 89 803 24 $ 978 Commercial Real Estate 11,239 4,914 4,609 9,523 462 $ 9,204 Total Real Estate Loans 12,416 5,948 4,752 10,700 504 $ 10,503 Business Loans: Commercial and Industrial Loans 149 — 149 149 77 $ 75 Total Business Loans 149 — 149 149 77 $ 75 Total Loans $ 12,565 $ 5,948 $ 4,901 $ 10,849 $ 581 $ 10,578 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 June 30, 2019 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,645 Total 3 $ 4,871 $ 2,645 Pre-Modification Post-Modification December 31, 2018 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,782 Total 3 $ 4,871 $ 2,782 Changes in the Corporation’s troubled debt restructurings (in thousands, except for number of loans) are set forth in the table below: Number Recorded of Loans Investment Totals at January 1, 2018 3 $ 3,047 Reductions due to: Principal paydowns (265 ) Totals at January 1, 2019 3 $ 2,782 Reductions due to: Principal paydowns (137 ) Total at June 30, 2019 3 $ 2,645 The allocated allowance for loan losses attributable to restructured loans was $174,274 at June 30, 2019 and December 31, 2018. The Corporation had no commitments to lend additional funds on these troubled debt restructurings as of June 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 June 30, 2019. The following table details the amount of gross loans (in thousands), segregated by loan grade and class, as of June 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 $ 51,867 $ 2,037 $ 670 $ — $ — $ 54,574 Farmland 15,361 398 890 — — 16,649 1-4 78,023 2,008 6,830 — — 86,861 Commercial Real Estate 166,473 21,631 15,101 — — 203,205 Total Real Estate Loans 311,724 26,074 23,491 — — 361,289 Business Loans: Commercial and Industrial Loans 88,796 56 1,745 — — 90,597 Farm Production and Other Farm Loans 715 — — — 31 746 Total Business Loans 89,511 56 1,745 — 31 91,343 Consumer Loans: Credit Cards 1,596 — 70 — — 1,666 Other Consumer Loans 11,293 51 68 45 — 11,457 Total Consumer Loans 12,889 51 138 45 — 13,123 Total Loans $ 414,124 $ 26,181 $ 25,374 $ 45 $ 31 $ 465,755 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 six months ended June 30, 2019: June 30, 2019 Real Business Consumer Total Beginning Balance, January 1, 2019 $ 2,844,681 $ 221,841 $ 305,173 $ 3,371,695 Provision for loan losses 72,381 211,247 176,670 460,298 Chargeoffs 14,981 12,178 41,886 69,045 Recoveries 23,498 8,297 26,730 58,525 Net (recoveries) chargeoffs (8,517 ) 3,881 15,156 10,520 Ending Balance $ 2,925,579 $ 429,207 $ 466,687 $ 3,821,473 Period end allowance allocated to: Loans individually evaluated for impairment $ 503,654 $ 77,046 $ — $ 580,700 Loans collectively evaluated for impairment 2,421,925 352,161 466,687 3,240,773 Ending Balance, June 30, 2019 $ 2,925,579 $ 429,207 $ 466,687 $ 3,821,473 The following table details activity in the allowance for loan losses by portfolio segment for the six months ended June 30, 2018: June 30, 2018 Real Business Consumer Total Beginning Balance, January 1, 2018 $ 2,151,715 $ 346,781 $ 520,732 $ 3,019,228 Provision for (reversal of) loan losses 481,714 (410,727 ) (218,798 ) (147,811 ) Chargeoffs 98,644 15,347 59,355 173,346 Recoveries 82,114 197,321 50,444 329,879 Net chargeoffs (recoveries) 16,530 (181,974 ) 8,911 (156,533 ) Ending Balance $ 2,616,899 $ 118,028 $ 293,023 $ 3,027,950 Period end allowance allocated to: Loans individually evaluated for impairment $ 528,937 $ — $ — $ 528,937 Loans collectively evaluated for impairment 2,087,962 118,028 293,023 2,499,013 Ending Balance, June 30, 2018 $ 2,616,899 $ 118,028 $ 293,023 $ 3,027,950 The Corporation’s recorded investment in loans as of June 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): June 30, 2019 Real Business Consumer Total Loans individually evaluated for specific impairment $ 10,700 $ 149 $ — $ 10,849 Loans collectively evaluated for general impairment 350,589 91,194 13,123 454,906 $ 361,289 $ 91,343 $ 13,123 $ 465,755 December 31, 2018 Real Estate Business 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	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Premises and Equipment	Note 9. Premises and Equipment The Company lease certain premises and equipment under operating leases. At June 30, 2019, the Company had lease liabilities and ROU assets totaling $932 million related to these leases. Lease liabilities and ROU assets are reflected in other liabilities and other assets, respectively. For the six months ended June 30, 2019, the weighted average remaining lease term for operating leases was 1.5 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 Six Months Ended June 30, 2019 June 30, 2019 (in thousands) Operating lease cost $ 92 $ 184 Short-term lease cost 6 12 Variable lease cost — — $ 98 $ 196 There were no sale and leaseback transactions, leverage leases or lease transactions with related parties during the six months ended June 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: Six Months Ended June 30, 2019 (in thousands) Lease payments due: Within one year $ 348 After one year but within two years 336 After two years but within three years 250 After three year but within four years 41 After four years but within five years — After five years — Total undiscounted cash flows 975 Discount on cash flows (43 ) Total lease liability $ 932

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 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 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

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 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 June 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 $ — $ 98,744,458 $ — $ 98,744,458 Mortgage-backed securities — 321,983,658 — 321,983,658 State, county and municipal obligations — 63,178,176 — 63,178,176 Total $ — $ 483,906,292 $ — $ 483,906,292 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 June 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 ALLL. Subsequent changes in fair value are reported as adjustments to the carrying amount and are recorded against earnings. The Company outsources the valuation of OREO with material balances to third party appraisers. The Company reviews the third-party appraisal for appropriateness and adjusts the value downward to consider selling and closing costs, which typically approximate 25% of the appraised value. For assets measured at fair value on a nonrecurring basis during 2019 that were still held on the Corporation’s balance sheet at June 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 $ — $ — $ 4,320,866 $ 4,320,866 Total $ — $ — $ 4,320,866 $ 4,320,866 The following table presents information as of June 30, 2019 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Financial instrument Fair Value Valuation Technique Significant Unobservable Range of Impaired loans $ 4,320,866 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 $4,901,566 and $3,364,538 had an allocated allowance for loan losses of $580,700 and $ 401,347 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- six-month 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 June 30, 2019: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Total Carrying Identical Observable Unobservable Fair June 30, 2019 Value Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 21,754,884 $ 21,754,884 $ — $ — $ 21,754,884 Interest bearing deposits with banks 1,193,764 1,193,764 — — 1,193,764 Securities available-for-sale 483,906,292 — 483,906,292 — 483,906,292 Net loans 461,914,254 — — 457,451,358 457,451,358 Financial liabilities Deposits $ 794,858,320 $ 574,931,275 $ 220,639,846 $ — $ 795,571,121 Securities sold under agreement to repurchase 119,327,404 119,327,404 — — 119,327,404 Federal funds purchased 12,000,000 12,000,000 — — 12,000,000 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)	6 Months Ended
	Jun. 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 June 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 Company. The Company is also subject to the regulations of the Federal Reserve. The area served by the Bank is east central and southern counties of Mississippi and the surrounding areas. Services are provided at several branch offices.
Estimates	Estimates The preparation of 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 to information about past events and current conditions. The standard provides significant flexibility and requires a high degree of judgment with regards to pooling financial assets with similar risk characteristics, determining the contractual terms of said financial assets and adjusting the relevant historical loss information in order to develop an estimate of expected lifetime losses. In addition, ASU 2016-13 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)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Net income per share was computed as follows: For the Three Months For the Six Months Ended June 30, Ended June 30, 2019 2018 2019 2018 Basic weighted average shares outstanding 4,897,970 4,889,772 4,895,265 4,886,258 Dilutive effect of granted options 2,921 5,020 2,697 7,729 Diluted weighted average shares outstanding 4,900,891 4,894,792 4,897,962 4,893,987 Net income $ 1,370,742 $ 1,688,140 $ 2,597,513 $ 3,460,527 Net income per share-basic $ 0.28 $ 0.35 $ 0.53 $ 0.71 Net income per share-diluted $ 0.28 $ 0.35 $ 0.53 $ 0.71

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	6 Months Ended
	Jun. 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 six months ended June 30, 2019: Directors’ Plan 2013 Plan Number of Weighted Number of Weighted Outstanding at December 31, 2018 52,500 $ 21.55 — $ — Granted — — — — Exercised — — — — Expired (12,000 ) 21.75 — — Outstanding at June 30, 2019 40,500 $ 21.49 — $ —

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 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 June 30, 2019 Amortized Gross Gross Estimated Fair Securities available-for-sale Obligations of U.S. Government agencies $ 98,909,861 $ 90,238 $ 255,641 $ 98,744,458 Mortgage backed securities 325,660,233 271,572 3,948,147 321,983,658 State, County, Municipals 63,371,075 329,930 522,829 63,178,176 Total $ 487,941,169 $ 691,740 $ 4,726,617 $ 483,906,292 December 31, 2018 Amortized Gross Gross Estimated Fair 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 June 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. June 30, 2019 December 31, 2018 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 784,744 $ 786,283 $ 1,875,288 $ 1,877,665 Due after one year through five years 91,101,901 90,842,206 91,948,838 89,121,194 Due after five years through ten years 17,737,676 17,899,263 32,801,788 31,718,293 Due after ten years 52,656,615 52,394,882 78,330,873 74,655,149 Residential mortgage backed securities 257,852,024 254,499,198 187,776,954 179,235,806 Commercial mortgage backed securities 67,808,209 67,484,460 71,965,548 68,138,347 Total $ 487,941,169 $ 483,906,292 $ 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, June 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 $ — $ — $ 40,203,509 $ 255,641 $ 40,203,509 $ 255,641 Mortgage backed securities 55,354,535 389,940 207,450,160 3,558,207 262,804,695 3,948,147 State, County, Municipal — — 42,287,189 522,829 42,287,189 522,829 Total $ 55,354,535 $ 389,940 $ 289,940,858 $ 4,336,677 $ 345,295,393 $ 4,726,617 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)	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Composition of Net Loans	The composition of net loans (in thousands) at June 30, 2019 and December 31, 2018 was as follows: June 30, December 31, Real Estate: Land Development and Construction $ 54,574 $ 41,134 Farmland 16,649 14,498 1-4 86,861 88,747 Commercial Real Estate 203,205 203,595 Total Real Estate Loans 361,289 347,974 Business Loans: Commercial and Industrial Loans 90,597 66,421 Farm Production and Other Farm Loans 746 907 Total Business Loans 91,343 67,328 Consumer Loans: Credit Cards 1,666 1,648 Other Consumer Loans 11,457 12,372 Total Consumer Loans 13,123 14,020 Total Gross Loans 465,755 429,322 Unearned Income (20 ) (45 ) Allowance for Loan Losses (3,821 ) (3,372 ) Loans, net $ 461,914 $ 425,905
Period-End, Non-Accrual Loans, Segregated by Class	Period-end, non-accrual June 30, December 31, Real Estate: Land Development and Construction $ 113 $ — Farmland 263 200 1-4 2,030 1,831 Commercial Real Estate 8,375 7,612 Total Real Estate Loans 10,781 9,643 Business Loans: Commercial and Industrial Loans 273 76 Farm Production and Other Farm Loans 31 31 Total Business Loans 304 107 Consumer Loans: Other Consumer Loans 71 89 Total Consumer Loans 71 89 Total Nonaccrual Loans $ 11,156 $ 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 June 30, 2019, was as follows: Loans 30-89 Days Loans Total Past Current Total Loans Accruing Real Estate: Land Development and Construction $ 1,612 $ 113 $ 1,725 $ 52,849 $ 54,574 $ — Farmland 279 — 279 16,370 16,649 — 1-4 2,197 526 2,723 84,138 86,861 — Commercial Real Estate 724 4,019 4,743 198,462 203,205 — Total Real Estate Loans 4,812 4,658 9,470 351,819 361,289 — Business Loans: Commercial and Industrial Loans 345 189 534 90,063 90,597 26 Farm Production and Other Farm Loans 49 — 49 697 746 — Total Business Loans 394 189 583 90,760 91,343 26 Consumer Loans: Credit Cards 52 18 70 1,596 1,666 18 Other Consumer Loans 226 3 229 11,228 11,457 — Total Consumer Loans 278 21 299 12,824 13,123 18 Total Loans $ 5,484 $ 4,868 $ 10,352 $ 455,403 $ 465,755 $ 44 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
Impaired Loans, Segregated by Class of Loans	Impaired loans (in thousands) as of June 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 $ 18 $ 57 Farmland 261 261 — 261 — $ 265 1-4 803 714 89 803 24 $ 978 Commercial Real Estate 11,239 4,914 4,609 9,523 462 $ 9,204 Total Real Estate Loans 12,416 5,948 4,752 10,700 504 $ 10,503 Business Loans: Commercial and Industrial Loans 149 — 149 149 77 $ 75 Total Business Loans 149 — 149 149 77 $ 75 Total Loans $ 12,565 $ 5,948 $ 4,901 $ 10,849 $ 581 $ 10,578 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
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 June 30, 2019 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,645 Total 3 $ 4,871 $ 2,645 Pre-Modification Post-Modification December 31, 2018 Outstanding Outstanding Number of Recorded Recorded Loans Investment Investment Commercial real estate 3 $ 4,871 $ 2,782 Total 3 $ 4,871 $ 2,782
Changes in Troubled Debt Restructurings	Changes in the Corporation’s troubled debt restructurings (in thousands, except for number of loans) are set forth in the table below: Number Recorded of Loans Investment Totals at January 1, 2018 3 $ 3,047 Reductions due to: Principal paydowns (265 ) Totals at January 1, 2019 3 $ 2,782 Reductions due to: Principal paydowns (137 ) Total at June 30, 2019 3 $ 2,645
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 June 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 $ 51,867 $ 2,037 $ 670 $ — $ — $ 54,574 Farmland 15,361 398 890 — — 16,649 1-4 78,023 2,008 6,830 — — 86,861 Commercial Real Estate 166,473 21,631 15,101 — — 203,205 Total Real Estate Loans 311,724 26,074 23,491 — — 361,289 Business Loans: Commercial and Industrial Loans 88,796 56 1,745 — — 90,597 Farm Production and Other Farm Loans 715 — — — 31 746 Total Business Loans 89,511 56 1,745 — 31 91,343 Consumer Loans: Credit Cards 1,596 — 70 — — 1,666 Other Consumer Loans 11,293 51 68 45 — 11,457 Total Consumer Loans 12,889 51 138 45 — 13,123 Total Loans $ 414,124 $ 26,181 $ 25,374 $ 45 $ 31 $ 465,755 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 six months ended June 30, 2019: June 30, 2019 Real Business Consumer Total Beginning Balance, January 1, 2019 $ 2,844,681 $ 221,841 $ 305,173 $ 3,371,695 Provision for loan losses 72,381 211,247 176,670 460,298 Chargeoffs 14,981 12,178 41,886 69,045 Recoveries 23,498 8,297 26,730 58,525 Net (recoveries) chargeoffs (8,517 ) 3,881 15,156 10,520 Ending Balance $ 2,925,579 $ 429,207 $ 466,687 $ 3,821,473 Period end allowance allocated to: Loans individually evaluated for impairment $ 503,654 $ 77,046 $ — $ 580,700 Loans collectively evaluated for impairment 2,421,925 352,161 466,687 3,240,773 Ending Balance, June 30, 2019 $ 2,925,579 $ 429,207 $ 466,687 $ 3,821,473 The following table details activity in the allowance for loan losses by portfolio segment for the six months ended June 30, 2018: June 30, 2018 Real Business Consumer Total Beginning Balance, January 1, 2018 $ 2,151,715 $ 346,781 $ 520,732 $ 3,019,228 Provision for (reversal of) loan losses 481,714 (410,727 ) (218,798 ) (147,811 ) Chargeoffs 98,644 15,347 59,355 173,346 Recoveries 82,114 197,321 50,444 329,879 Net chargeoffs (recoveries) 16,530 (181,974 ) 8,911 (156,533 ) Ending Balance $ 2,616,899 $ 118,028 $ 293,023 $ 3,027,950 Period end allowance allocated to: Loans individually evaluated for impairment $ 528,937 $ — $ — $ 528,937 Loans collectively evaluated for impairment 2,087,962 118,028 293,023 2,499,013 Ending Balance, June 30, 2018 $ 2,616,899 $ 118,028 $ 293,023 $ 3,027,950
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 June 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): June 30, 2019 Real Business Consumer Total Loans individually evaluated for specific impairment $ 10,700 $ 149 $ — $ 10,849 Loans collectively evaluated for general impairment 350,589 91,194 13,123 454,906 $ 361,289 $ 91,343 $ 13,123 $ 465,755 December 31, 2018 Real Estate Business 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)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Summary Of Lease Costs	Lease costs were as follows: Three Months Ended Six Months Ended June 30, 2019 June 30, 2019 (in thousands) Operating lease cost $ 92 $ 184 Short-term lease cost 6 12 Variable lease cost — — $ 98 $ 196
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: Six Months Ended June 30, 2019 (in thousands) Lease payments due: Within one year $ 348 After one year but within two years 336 After two years but within three years 250 After three year but within four years 41 After four years but within five years — After five years — Total undiscounted cash flows 975 Discount on cash flows (43 ) Total lease liability $ 932

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	6 Months Ended
	Jun. 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 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

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 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 June 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 $ — $ 98,744,458 $ — $ 98,744,458 Mortgage-backed securities — 321,983,658 — 321,983,658 State, county and municipal obligations — 63,178,176 — 63,178,176 Total $ — $ 483,906,292 $ — $ 483,906,292 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 June 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 $ — $ — $ 4,320,866 $ 4,320,866 Total $ — $ — $ 4,320,866 $ 4,320,866 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 June 30, 2019: Fair Value Measurements Using: Quoted Prices in Active Significant Markets for Other Significant Total Carrying Identical Observable Unobservable Fair June 30, 2019 Value Assets Inputs Inputs Value (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 21,754,884 $ 21,754,884 $ — $ — $ 21,754,884 Interest bearing deposits with banks 1,193,764 1,193,764 — — 1,193,764 Securities available-for-sale 483,906,292 — 483,906,292 — 483,906,292 Net loans 461,914,254 — — 457,451,358 457,451,358 Financial liabilities Deposits $ 794,858,320 $ 574,931,275 $ 220,639,846 $ — $ 795,571,121 Securities sold under agreement to repurchase 119,327,404 119,327,404 — — 119,327,404 Federal funds purchased 12,000,000 12,000,000 — — 12,000,000 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 June 30, 2019 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Financial instrument Fair Value Valuation Technique Significant Unobservable Range of Impaired loans $ 4,320,866 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	Jun. 30, 2019	Jan. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
Operating lease liability	$ 932
Operating lease right-of-use ("ROU")	$ 932,000
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] - USD ($) $ / shares in Units, $ in Millions	May 21, 2019	Aug. 01, 2019
Shares offered per share	0.39417
Cash offered per share of acquiree	$ 3.615
Total consideration	$ 20
Subsequent Event [Member]
Closing share price		$ 20.76

Commitments and Contingent Li_2

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Loan commitments	$ 57,647,121	$ 58,835,208
Letters of credit outstanding	$ 2,492,810	$ 2,516,810

Equity Compensation Plans - Add

Equity Compensation Plans - Additional Information (Detail)	6 Months Ended
	Jun. 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	33,480
2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options outstanding	$ 0

Net Income per Share - Earnings

Net Income per Share - Earnings Per Share (Detail) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	4,897,970		4,889,772		4,895,265	4,886,258
Dilutive effect of granted options	2,921		5,020		2,697	7,729
Diluted weighted average shares outstanding	4,900,891		4,894,792		4,897,962	4,893,987
Net income	$ 1,370,742	$ 1,226,771	$ 1,688,140	$ 1,772,387	$ 2,597,513	$ 3,460,527
Net income per share-basic	$ 0.28		$ 0.35		$ 0.53	$ 0.71
Net income per share-diluted	$ 0.28		$ 0.35		$ 0.53	$ 0.71

Equity Compensation Plans -Summ

Equity Compensation Plans -Summary of Stock Option Activity (Detail)	6 Months Ended
	Jun. 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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 319,520	$ 305,855	$ 514,690	$ 627,740
Effective tax rate	18.90%	15.30%	16.50%	15.40%

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Investment [Line Items]
Securities at carrying value	$ 357,072,500	$ 357,231,440

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Securities Available-for-Sale (Detail) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 487,941,169	$ 464,699,289
Gross Unrealized Gains	691,740	72,809
Gross Unrealized Losses	4,726,617	20,025,644
Estimated Fair Value	483,906,292	444,746,454
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	98,909,861	99,365,930
Gross Unrealized Gains	90,238
Gross Unrealized Losses	255,641	3,388,147
Estimated Fair Value	98,744,458	95,977,783
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	325,660,233	259,742,501
Gross Unrealized Gains	271,572	4,921
Gross Unrealized Losses	3,948,147	12,373,269
Estimated Fair Value	321,983,658	247,374,153
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	63,371,075	105,590,858
Gross Unrealized Gains	329,930	67,888
Gross Unrealized Losses	522,829	4,264,228
Estimated Fair Value	$ 63,178,176	$ 101,394,518

Securities - Amortized Cost a_2

Securities - Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity (Detail) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Available-for-sale, Amortized Cost
Due in one year or less	$ 784,744	$ 1,875,288
Due after one year through five years	91,101,901	91,948,838
Due after five years through ten years	17,737,676	32,801,788
Due after ten years	52,656,615	78,330,873
Total Amortized Cost	487,941,169	464,699,289
Available-for-sale, Estimated Fair Value
Due in one year or less	786,283	1,877,665
Due after one year through five years	90,842,206	89,121,194
Due after five years through ten years	17,899,263	31,718,293
Due after ten years	52,394,882	74,655,149
Total Fair Value	483,906,292	444,746,454
Residential Mortgage Backed Securities [Member]
Available-for-sale, Amortized Cost
Total Amortized Cost	257,852,024	187,776,954
Available-for-sale, Estimated Fair Value
Total Fair Value	254,499,198	179,235,806
Commercial Mortgage Backed Securities [Member]
Available-for-sale, Amortized Cost
Total Amortized Cost	67,808,209	71,965,548
Available-for-sale, Estimated Fair Value
Total Fair Value	$ 67,484,460	$ 68,138,347

Securities - Summary of Unreali

Securities - Summary of Unrealized Loss Information for Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 55,354,535	$ 24,881,600
Less than 12 months Unrealized Losses	389,940	464,556
12 months or more Fair Value	289,940,858	407,442,229
12 months or more Unrealized Losses	4,336,677	19,561,088
Total Fair Value	345,295,393	432,323,829
Total Unrealized Losses	4,726,617	20,025,644
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
12 months or more Fair Value	40,203,509	95,977,783
12 months or more Unrealized Losses	255,641	3,388,147
Total Fair Value	40,203,509	95,977,783
Total Unrealized Losses	255,641	3,388,147
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	55,354,535	12,257,636
Less than 12 months Unrealized Losses	389,940	179,281
12 months or more Fair Value	207,450,160	234,928,705
12 months or more Unrealized Losses	3,558,207	12,193,988
Total Fair Value	262,804,695	247,186,341
Total Unrealized Losses	3,948,147	12,373,269
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value		12,623,964
Less than 12 months Unrealized Losses		285,275
12 months or more Fair Value	42,287,189	76,535,741
12 months or more Unrealized Losses	522,829	3,978,953
Total Fair Value	42,287,189	89,159,705
Total Unrealized Losses	$ 522,829	$ 4,264,228

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($)	Jun. 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 ($)	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	$ 465,755,000	$ 429,322,000
Unearned Income	(20,000)	(45,000)
Allowance for Loan Losses	(3,821,473)	(3,371,695)	$ (3,027,950)	$ (3,019,228)
Loans, net	461,914,254	425,905,093
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	361,289,000	347,974,000
Total Gross Loans	361,289,000	347,974,000
Allowance for Loan Losses	(2,925,579)	(2,844,681)	(2,616,899)	(2,151,715)
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	54,574,000	41,134,000
Total Gross Loans	54,574,000	41,134,000
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,649,000	14,498,000
Total Gross Loans	16,649,000	14,498,000
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	86,861,000	88,747,000
Total Gross Loans	86,861,000	88,747,000
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	203,205,000	203,595,000
Total Gross Loans	203,205,000	203,595,000
Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	91,343,000	67,328,000
Total Gross Loans	91,343,000	67,328,000
Allowance for Loan Losses	(429,207)	(221,841)	(118,028)	(346,781)
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	90,597,000	66,421,000
Total Gross Loans	90,597,000	66,421,000
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	746,000	907,000
Total Gross Loans	746,000	907,000
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	13,123,000	14,020,000
Allowance for Loan Losses	(466,687)	(305,173)	$ (293,023)	$ (520,732)
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	1,666,000	1,648,000
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	$ 11,457,000	$ 12,372,000

Loans - Period-End Non-Accrual

Loans - Period-End Non-Accrual Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 11,156	$ 9,839
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	10,781	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	263	200
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	2,030	1,831
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	8,375	7,612
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	304	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	273	76
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	71	89
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 71	$ 89

Loans - Aging Analysis of Past

Loans - Aging Analysis of Past Due Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	$ 5,484	$ 8,697
Total Past Due Loans	10,352	12,149
Current Loans	455,403	417,173
Total Gross Loans	465,755	429,322
Accruing Loans 90 or more Days Past Due	44	73
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	4,812	6,788
Total Past Due Loans	9,470	10,182
Current Loans	351,819	337,792
Total Gross Loans	361,289	347,974
Accruing Loans 90 or more Days Past Due	26	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	1,612	1,494
Total Past Due Loans	1,725	1,548
Current Loans	52,849	39,586
Total Gross Loans	54,574	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	279	779
Total Past Due Loans	279	808
Current Loans	16,370	13,690
Total Gross Loans	16,649	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	2,197	3,456
Total Past Due Loans	2,723	3,786
Current Loans	84,138	84,961
Total Gross Loans	86,861	88,747
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	724	1,059
Total Past Due Loans	4,743	4,040
Current Loans	198,462	199,555
Total Gross Loans	203,205	203,595
Commercial Real Estate Portfolio Segment [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans 90 or more Days Past Due	26
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	394	1,681
Total Past Due Loans	583	1,702
Current Loans	90,760	65,626
Total Gross Loans	91,343	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	345	1,672
Total Past Due Loans	534	1,693
Current Loans	90,063	64,728
Total Gross Loans	90,597	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	49	9
Total Past Due Loans	49	9
Current Loans	697	898
Total Gross Loans	746	907
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	278	228
Total Past Due Loans	299	265
Current Loans	12,824	13,755
Total Gross Loans	13,123	14,020
Accruing Loans 90 or more Days Past Due	18	19
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	52	16
Total Past Due Loans	70	20
Current Loans	1,596	1,628
Total Gross Loans	1,666	1,648
Accruing Loans 90 or more Days Past Due	18	4
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	226	212
Total Past Due Loans	229	245
Current Loans	11,228	12,127
Total Gross Loans	11,457	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	4,868	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	4,658	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	113	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	526	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	4,019	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	189	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	189	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	21	37
Loans 90 or more Days Past Due [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	18	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	$ 3	$ 33

Loans - Impaired Loans, Segrega

Loans - Impaired Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 12,565	$ 12,023
Recorded Investment With No Allowance	5,948	6,540
Recorded Investment With Allowance	4,901	3,766
Total Recorded Investment	10,849	10,306
Related Allowance	581	401
Average Recorded Investment	10,578	7,352
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	12,416	10,601
Recorded Investment With No Allowance	5,948	5,209
Recorded Investment With Allowance	4,752	3,675
Total Recorded Investment	10,700	8,884
Related Allowance	504	374
Average Recorded Investment	10,503	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	18
Average Recorded Investment	57
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	261	269
Recorded Investment With No Allowance	261	269
Total Recorded Investment	261	269
Average Recorded Investment	265	135
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	803	1,153
Recorded Investment With No Allowance	714	1,062
Recorded Investment With Allowance	89	91
Total Recorded Investment	803	1,153
Related Allowance	24	27
Average Recorded Investment	978	728
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	11,239
Recorded Investment With No Allowance	4,914
Recorded Investment With Allowance	4,609
Total Recorded Investment	9,523
Related Allowance	462
Average Recorded Investment	9,204
Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	149	12,023
Recorded Investment With No Allowance		6,540
Recorded Investment With Allowance	149	3,766
Total Recorded Investment	149	10,306
Related Allowance	77	401
Average Recorded Investment	75	$ 7,352
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	149
Recorded Investment With Allowance	149
Total Recorded Investment	149
Related Allowance	77
Average Recorded Investment	$ 75

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings Segregated by Class (Detail) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 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	$ 2,645	$ 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	$ 2,645	$ 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	$ 2,645	$ 2,782

Loans - Changes in Troubled Deb

Loans - Changes in Troubled Debt Restructurings (Detail) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019USD ($)Loan	Dec. 31, 2018USD ($)Loan	Dec. 31, 2017USD ($)Loan
Receivables [Abstract]
Number of Loans | Loan	3	3	3
Principal paydowns, Recorded Investment	$ (137)	$ (265)
Post-Modification Outstanding Recorded Investment	$ 2,645	$ 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	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 465,755	$ 429,322
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	361,289	347,974
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	54,574	41,134
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	16,649	14,498
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	86,861	88,747
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	203,205	203,595
Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	91,343	67,328
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	90,597	66,421
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	746	907
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	13,123	14,020
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,666	1,648
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	11,457	12,372
Satisfactory 1, 2, 3, 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	414,124	383,529
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	311,724	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	51,867	39,726
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,361	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	78,023	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	166,473	172,217
Satisfactory 1, 2, 3, 4 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	89,511	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	88,796	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	715	876
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	12,889	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	1,596	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	11,293	12,181
Special Mention 5,6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	26,181	21,014
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	26,074	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	2,037	840
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	398	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	2,008	1,751
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	21,631	17,938
Special Mention 5,6 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	56	81
Special Mention 5,6 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	56	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	51	65
Special Mention 5,6 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	51	65
Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	25,374	24,724
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	23,491	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	670	568
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	890	911
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	6,830	7,337
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,101	13,440
Substandard 7 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,745	2,377
Substandard 7 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,745	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	0	31
Substandard 7 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	138	91
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	70	20
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	68	71
Doubtful 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	45	55
Doubtful 8 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	45	55
Doubtful 8 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	45	$ 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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance			$ 3,371,695	$ 3,019,228
(Reversal of) provision for loan losses	$ 264,819	$ 88,962	460,298	(147,811)
Chargeoffs			69,045	173,346
Recoveries			58,525	329,879
Net chargeoffs (recoveries)			10,520	(156,533)
Ending Balance	3,821,473	3,027,950	3,821,473	3,027,950
Loans individually evaluated for impairment					$ 580,700	$ 528,937
Loans collectively evaluated for impairment					3,240,773	2,499,013
Ending Balance	3,821,473	3,027,950	3,821,473	3,019,228	3,821,473	3,027,950
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			72,381	481,714
Chargeoffs			14,981	98,644
Recoveries			23,498	82,114
Net chargeoffs (recoveries)			(8,517)	16,530
Ending Balance	2,925,579	2,616,899	2,925,579	2,616,899
Loans individually evaluated for impairment					503,654	528,937
Loans collectively evaluated for impairment					2,421,925	2,087,962
Ending Balance	2,925,579	2,616,899	2,844,681	2,151,715	2,925,579	2,616,899
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance			221,841	346,781
(Reversal of) provision for loan losses			211,247	(410,727)
Chargeoffs			12,178	15,347
Recoveries			8,297	197,321
Net chargeoffs (recoveries)			3,881	(181,974)
Ending Balance	429,207	118,028	429,207	118,028
Loans individually evaluated for impairment					77,046
Loans collectively evaluated for impairment					352,161	118,028
Ending Balance	429,207	118,028	221,841	346,781	429,207	118,028
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance			305,173	520,732
(Reversal of) provision for loan losses			176,670	(218,798)
Chargeoffs			41,886	59,355
Recoveries			26,730	50,444
Net chargeoffs (recoveries)			15,156	8,911
Ending Balance	466,687	293,023	466,687	293,023
Loans collectively evaluated for impairment					466,687	293,023
Ending Balance	$ 466,687	$ 293,023	$ 305,173	$ 520,732	$ 466,687	$ 293,023

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	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	$ 10,849	$ 10,306
Loans collectively evaluated for general impairment	454,906	419,016
Total Gross Loans	465,755	429,322
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	10,700	10,306
Loans collectively evaluated for general impairment	350,589	337,668
Total Gross Loans	361,289	347,974
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	149	0
Loans collectively evaluated for general impairment	91,194	67,328
Total Gross Loans	91,343	67,328
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for general impairment	13,123	14,020
Total Gross Loans	$ 13,123	$ 14,020

Premises and Equipment - Summar

Premises and Equipment - Summary of Lease Costs (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Operating lease cost	$ 92	$ 184
Short-term lease cost	6	12
Total lease cost	$ 98	$ 196

Premises and Equipment - Maturi

Premises and Equipment - Maturities of Operating Lease Liabilities (Detail) $ in Thousands	Jun. 30, 2019USD ($)
Lease payments due:
Within one year	$ 348
After one year but within two years	336
After two years but within three years	250
After three year but within four years	41
Total undiscounted cash flows	975
Discount on cash flows	(43)
Total lease liability	$ 932

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) $ in Millions	Jun. 30, 2019USD ($)
Operating lease right-of-use ("ROU")	$ 932
Weighted average remaining lease term	1 year 6 months
Weighted average discount rate	3.30%

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Capital Structure Activity (Detail) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Beginning Balance	$ 90,579,057	$ 83,866,317	$ 82,024,896	$ 88,451,040	$ 83,866,317	$ 88,451,040
Net income	1,370,742	1,226,771	1,688,140	1,772,387	2,597,513	3,460,527
Dividends paid	(1,178,887)	(1,177,087)	(1,177,087)	(1,174,729)
Options exercised			27,000
Stock compensation expense	40,694	41,344	42,581	45,056
Other comprehensive income, net	5,324,717	6,621,712	(932,159)	(7,068,858)	11,946,429	(7,993,017)
Ending Balance	96,136,323	90,579,057	81,681,371	82,024,896	96,136,323	81,681,371
Common Stock
Beginning Balance	$ 980,906	$ 980,906	$ 978,941	$ 978,941	$ 980,906	$ 978,941
Beginning Balance (in shares)	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	$ 980,906	$ 980,906	$ 978,941	$ 982,406	$ 980,906
Ending Balance (in shares)	4,912,030	4,904,530	4,904,530	4,894,705	4,912,030	4,904,530
Additional Paid-In Capital
Beginning Balance	$ 4,339,843	$ 4,298,499	$ 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	40,694	41,344	42,581	45,056
Ending Balance	4,379,037	4,339,843	4,215,811	4,148,195	4,379,037	4,215,811
Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(8,352,891)	(14,974,603)	(15,294,277)	(8,225,419)	(14,974,603)	(8,225,419)
Other comprehensive income, net	5,324,717	6,621,712	(924,159)	(7,068,858)
Ending Balance	(3,028,174)	(8,352,891)	(16,218,436)	(15,294,277)	(3,028,174)	(16,218,436)
Retained Earnings
Beginning Balance	93,611,199	93,561,515	92,192,037	91,594,379	93,561,515	91,594,379
Net income	1,370,742	1,226,771	1,688,140	1,772,387
Dividends paid	(1,178,887)	(1,177,087)	(1,177,087)	(1,174,729)
Ending Balance	$ 93,803,054	$ 93,611,199	$ 92,703,090	$ 92,192,037	$ 93,803,054	$ 92,703,090

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 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	10,849,000	10,306,000
Impaired loans, allowance for loan losses	581,000	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 ($)	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 483,906,292	$ 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	98,744,458	95,977,783
Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	321,983,658	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	63,178,176	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	483,906,292	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	483,906,292	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	98,744,458	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	321,983,658	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	63,178,176	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	483,906,292	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	98,744,458	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	321,983,658	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	$ 63,178,176	$ 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 ($)	Jun. 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	$ 4,320,866	$ 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	4,320,866	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	4,320,866	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	$ 4,320,866	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 ($)	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 4,320,866	$ 3,553,147
Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 4,320,866	$ 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 ($)	Jun. 30, 2019	Dec. 31, 2018
Financial assets
Cash and due from banks	$ 21,754,884	$ 12,592,130
Interest bearing deposits with banks	1,193,764	8,079,742
Securities available-for-sale	483,906,292	444,746,454
Net loans	457,451,358	420,992,074
Financial liabilities
Deposits	795,571,121	755,462,961
Securities Sold under Agreement to Repurchase	119,327,404	107,965,505
Federal Funds Purchased	12,000,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets
Cash and due from banks	21,754,884	12,592,130
Interest bearing deposits with banks	1,193,764	8,079,742
Financial liabilities
Deposits	574,931,275	544,985,869
Securities Sold under Agreement to Repurchase	119,327,404	107,965,505
Federal Funds Purchased	12,000,000
Significant Other Observable Inputs (Level 2) [Member]
Financial assets
Securities available-for-sale	483,906,292	444,746,454
Financial liabilities
Deposits	220,639,846	210,477,092
Significant Unobservable Inputs (Level 3) [Member]
Financial assets
Net loans	457,451,358	420,992,074
Carrying Value [Member]
Financial assets
Cash and due from banks	21,754,884	12,592,130
Interest bearing deposits with banks	1,193,764	8,079,742
Securities available-for-sale	483,906,292	444,746,454
Net loans	461,914,254	425,905,093
Financial liabilities
Deposits	794,858,320	756,221,510
Securities Sold under Agreement to Repurchase	119,327,404	$ 107,965,505
Federal Funds Purchased	$ 12,000,000