Citizens Holding (CIZN) 10-Q 10 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 05, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Trading Symbol	CIZN
Entity Registrant Name	CITIZENS HOLDING CO /MS/
Entity Central Index Key	1,075,706
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		4,894,579

Consolidated Statements of Cond

Consolidated Statements of Condition - USD ($)	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 27,706,912	$ 21,688,557
Interest bearing deposits with other banks	73,714,719	48,603,182
Investment securities available for sale, at fair value	489,941,021	496,124,574
Loans, net of allowance for loan losses of $3,701,914 in 2017 and $3,902,796 in 2016	389,183,439	390,148,343
Premises and equipment, net	19,451,561	18,664,084
Other real estate owned, net	4,352,609	4,443,010
Accrued interest receivable	4,410,732	4,720,189
Cash surrender value of life insurance	24,020,672	23,890,333
Deferred tax assets, net	9,000,890	10,634,669
Other assets	6,226,193	6,294,966
TOTAL ASSETS	1,048,008,748	1,025,211,907
Deposits:
Noninterest-bearing demand	154,378,785	149,512,941
Interest-bearing NOW and money market accounts	364,334,436	340,180,286
Savings deposits	76,393,262	73,745,005
Certificates of deposit	194,108,393	196,714,108
Total deposits	789,214,876	760,152,340
Securities sold under agreement to repurchase	141,098,287	150,282,913
Federal Home Loan Bank advances	20,000,000	20,000,000
Accrued interest payable	194,140	199,368
Deferred compensation payable	8,331,957	8,209,427
Other liabilities	951,346	1,308,464
Total liabilities	959,790,606	940,152,512
SHAREHOLDERS' EQUITY
Common stock; $0.20 par value, 22,500,000 shares authorized, 4,887,079 shares issued and outstanding at March 31, 2017 and 4,882,579 shares issued and outstanding at December 31, 2016	977,416	976,516
Additional paid-in capital	3,934,261	3,802,204
Retained earnings	91,264,115	90,999,689
Accumulated other comprehensive loss, net of tax benefit of $4,733,977 in 2017 and $6,376,702 in 2016	(7,957,650)	(10,719,014)
Total shareholders' equity	88,218,142	85,059,395
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,048,008,748	$ 1,025,211,907

Consolidated Statements of Con3

Consolidated Statements of Condition (Parenthetical) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Loans, allowance for loan losses	$ 3,701,914	$ 3,902,796
Common stock, par value	$ 0.20	$ 0.20
Common stock, shares authorized	22,500,000	22,500,000
Common stock, shares issued	4,887,079	4,882,579
Common stock, shares outstanding	4,887,079	4,882,579
Accumulated other comprehensive loss, tax benefits	$ (4,733,977)	$ (6,376,702)

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
INTEREST INCOME
Loans, including fees	$ 4,568,079	$ 4,784,505
Investment securities	2,832,451	2,715,730
Other interest	68,547	79,499
Total interest income	7,469,077	7,579,734
INTEREST EXPENSE
Deposits	477,642	468,458
Other borrowed funds	329,805	300,602
Total interest expense	807,447	769,060
NET INTEREST INCOME	6,661,630	6,810,674
(REVERSAL OF) PROVISION FOR LOAN LOSSES	(151,220)	60,498
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	6,812,850	6,750,176
OTHER INCOME
Service charges on deposit accounts	1,042,031	886,804
Other service charges and fees	616,772	586,422
Other operating income	275,457	342,462
Total other income	1,934,260	1,815,688
OTHER EXPENSES
Salaries and employee benefits	3,663,804	3,402,318
Occupancy expense	1,310,243	1,329,204
Other operating expense	2,135,109	1,912,793
Total other expenses	7,109,156	6,644,315
INCOME BEFORE PROVISION FOR INCOME TAXES	1,637,954	1,921,549
PROVISION FOR INCOME TAXES	200,629	395,379
NET INCOME	$ 1,437,325	$ 1,526,170
NET INCOME PER SHARE -Basic	$ 0.29	$ 0.31
NET INCOME PER SHARE -Diluted	0.29	0.31
DIVIDENDS PAID PER SHARE	$ 0.24	$ 0.24

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 1,437,325	$ 1,526,170
Other comprehensive income
Unrealized holding gains	4,404,089	1,856,204
Income tax effect	(1,642,725)	(692,364)
Net unrealized gains	2,761,364	1,163,840
Securities transferred from available-for-sale to held-to-maturity
Amortization of net unrealized losses during the period		831,088
Income tax effect		(309,996)
Net unrealized (losses) gains, securities held-to-maturity		521,092
Total other comprehensive income	2,761,364	1,684,932
Comprehensive income	$ 4,198,689	$ 3,211,102

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net cash provided by operating activities	$ 2,350,831	$ 792,198
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from maturities and calls of securities available for sale	11,142,246	27,129,213
Proceeds from maturities and calls of securities held to maturity		10,000,000
Purchases of investment securities available for sale	(1,322,106)	(107,664,521)
Purchases of bank premises and equipment	(1,023,788)	(29,244)
(Increase) decrease in interest bearing deposits with other banks	(25,111,537)	41,382,005
Proceeds from sale of other real estate	82,550	194,739
Net decrease in loans	1,104,924	13,575,364
Net cash used by investing activities	(15,127,711)	(15,412,444)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	29,060,135	36,885,617
Net change in securities sold under agreement to repurchase	(9,184,626)	(9,461,991)
Exercise of stock options	92,625
Payment of dividends	(1,172,899)	(1,170,238)
Net cash provided by financing activities	18,795,235	26,253,388
Net increase in cash and due from banks	6,018,355	11,633,142
Cash and due from banks, beginning of period	21,688,557	14,947,690
Cash and due from banks, end of period	$ 27,706,912	$ 26,580,832

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Note 1. Basis of Presentation These interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). However, these interim consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The interim consolidated financial statements are unaudited and reflect all adjustments and reclassifications, which, in the opinion of management, are necessary for a fair presentation of the results of operations and financial condition as of and for the interim periods presented. All adjustments and reclassifications are of a normal and recurring nature. Results for the period ended March 31, 2017 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 include the accounts of its wholly-owned subsidiary, The Citizens Bank of Philadelphia (the “Bank” and collectively with Citizens Holding Company, the “Corporation”). 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

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 2. Commitments and Contingent Liabilities In the ordinary course of business, the Corporation enters into commitments to extend credit to its customers. The unused portion of these commitments is not reflected in the accompanying financial statements. As of March 31, 2017, the Corporation had entered into loan commitments with certain customers with an aggregate unused balance of $35,517,643 compared to an aggregate unused balance of $37,194,220 at December 31, 2016. There were $3,370,180 of letters of credit outstanding at March 31, 2017 and $3,456,180 at December 31, 2016. The fair value of such commitments is not considered material because letters of credit and loan commitments often are not used in their entirety, if at all, before they expire. The balances of such letters and commitments should not be used to project actual future liquidity requirements. However, the Corporation does incorporate expectations about the utilization under its credit-related commitments and into its asset and liability management program. The Corporation is a party to lawsuits and other claims that arise in the ordinary course of business, all of which are being vigorously contested. In the regular course of business, management evaluates estimated losses or costs related to litigation, and provisions are made for anticipated losses whenever management believes that such losses are probable and can be reasonably estimated. At the present time, management believes, based on the advice of legal counsel, that the final resolution of pending legal proceedings will not likely have a material impact on the Corporation’s consolidated financial condition or results of operations.

Net Income per Share

Net Income per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Net Income per Share	Note 3. Net Income per Share Net income per share - basic has been computed based on the weighted average number of shares outstanding during each period. Net income per share - diluted has been computed based on the weighted average number of shares outstanding during each period plus the dilutive effect of outstanding stock options using the treasury stock method. Net income per share was computed as follows: For the Three Months Ended March 31, 2017 2016 Basic weighted average shares outstanding 4,883,679 4,875,079 Dilutive effect of granted options 14,214 10,061 Diluted weighted average shares outstanding 4,897,893 4,885,140 Net income $ 1,437,325 $ 1,526,170 Net income per share-basic $ 0.29 $ 0.31 Net income per share-diluted $ 0.29 $ 0.31

Equity Compensation Plans

Equity Compensation Plans	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Compensation Plans	Note 4. Equity Compensation Plans The Corporation has adopted the 2013 Incentive Compensation Plan (the “2013 Plan”), which the Corporation intends to use for all 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 utilized two stock-based compensation plans, the 1999 Directors’ Stock Compensation Plan (the “Directors’ Plan”) for directors, and the 1999 Employees’ Long-Term Incentive Plan (the “Employees’ Plan”) for employees, both of which have expired. The following table is a summary of the stock option activity for the three months ended March 31, 2017. Directors’ Plan Employees’ Plan 2013 Plan Number Weighted Number Weighted Number Weighted Outstanding at December 31, 2016 78,000 $ 21.08 — $ — — $ — Granted — — — — — — Exercised (4,500 ) 20.58 — — — — Expired — — — — — — Outstanding at March 31, 2017 73,500 $ 21.11 — $ — — $ — The intrinsic value of options previously granted under the Directors’ Plan at March 31, 2017, was $268,800, the intrinsic value of options previously granted under the Employees’ Plan at March 31, 2017, was $0, and since there were no options granted under the 2013 Plan during the three-month period ended March 31, 2017, the current intrinsic value for the 2013 Plan at March 31, 2017 is $0, for an aggregate intrinsic value at March 31, 2017, of $268,800. During the quarter ended June 30, 2016, the Corporation’s directors received restricted stock grants totaling 7,500 shares of common stock under the 2013 Plan. These grants vest over a one-year one-year

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 5. Income Taxes The income tax topic of the Accounting Standards Codification (“ASC”) defines the threshold for recognizing the benefits of tax return positions in the financial statements as “more-likely-than-not” de-recognition, The Corporation files a consolidated United States federal income tax return. The Corporation is currently open to audit under the statute of limitations by the Internal Revenue Service for all tax years after 2013. The Corporation’s consolidated state income tax returns are also open to audit under the statute of limitations for the same period.

Securities

Securities	3 Months Ended
	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	Note 6. Securities The amortized cost and estimated fair value of securities available-for-sale March 31, 2017 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 204,424,326 $ — $ 4,872,074 $ 199,552,252 Mortgage backed securities 147,072,647 334,610 3,841,670 143,565,587 State, County, Municipals 148,270,381 1,305,634 5,738,592 143,837,423 Other investments 2,865,293 120,466 — 2,985,759 Total $ 502,632,647 $ 1,760,710 $ 14,452,336 $ 489,941,021 December 31, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 207,080,794 $ — $ 7,114,186 $ 199,966,608 Mortgage backed securities 152,765,924 340,419 4,841,633 148,264,710 State, County, Municipals 150,503,811 1,269,356 6,851,017 144,922,150 Other investments 2,869,761 101,345 — 2,971,106 Total $ 513,220,290 $ 1,711,120 $ 18,806,836 $ 496,124,574 The amortized cost and estimated fair value of securities by contractual maturity at March 31, 2017 and December 31, 2016 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations. March 31, 2017 December 31, 2016 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 5,356,998 $ 5,372,879 $ 6,333,181 $ 6,370,921 Due after one year through five years 52,866,510 52,817,589 30,059,503 30,278,557 Due after five years through ten years 103,343,414 101,454,474 126,336,589 122,562,724 Due after ten years 341,065,725 330,296,079 350,491,017 336,912,372 Total $ 502,632,647 $ 489,941,021 $ 513,220,290 $ 496,124,574 The tables below show the Corporation’s gross unrealized losses and fair value of available-for-sale held-to-maturity A summary of unrealized loss information for securities available-for-sale, March 31, 2017 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 $ 194,896 $ 4,562 $ 4,656 $ 310 $ 199,552 $ 4,872 Mortgage backed securities 114,363 3,314 23,050 527 137,413 3,841 State, County, Municipal 88,822 5,594 3,381 145 92,203 5,739 Total $ 398,081 $ 13,470 $ 31,087 $ 982 $ 429,168 $ 14,452 Less than 12 months 12 months or more Total December 31, 2016 Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses Description of Securities Obligations of U.S. government agencies $ 195,363 $ 6,753 $ 4,604 $ 362 $ 199,967 $ 7,115 Mortgage backed securities 117,438 4,183 24,353 658 141,791 4,841 State, County, Municipal 95,088 6,663 3,092 188 98,180 6,851 Total $ 407,889 $ 17,599 $ 32,049 $ 1,208 $ 439,938 $ 18,807 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, mainly in the mid-term

Loans

Loans	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Loans	Note 7. Loans The composition of net loans (in thousands) at March 31, 2017 and December 31, 2016 was as follows: March 31, 2017 December 31, 2016 Real Estate: Land Development and Construction $ 26,757 $ 23,793 Farmland 17,288 18,175 1-4 96,040 97,812 Commercial Real Estate 178,466 180,880 Total Real Estate Loans 318,551 320,660 Business Loans: Commercial and Industrial Loans 55,728 53,761 Farm Production and Other Farm Loans 866 765 Total Business Loans 56,594 54,526 Consumer Loans: Credit Cards 1,125 1,156 Other Consumer Loans 17,063 18,310 Total Consumer Loans 18,188 19,466 Total Gross Loans 393,333 394,652 Unearned Income (448 ) (601 ) Allowance for Loan Losses (3,702 ) (3,903 ) Loans, net $ 389,183 $ 390,148 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 March 31, 2017 December 31, 2016 Real Estate: Land Development and Construction $ 128 $ 133 Farmland 298 234 1-4 2,246 1,954 Commercial Real Estate 6,061 6,293 Total Real Estate Loans 8,733 8,614 Business Loans: Commercial and Industrial Loans 153 239 Total Business Loans 153 239 Consumer Loans: Other Consumer Loans 100 26 Total Consumer Loans 100 26 Total Nonaccrual Loans $ 8,986 $ 8,879 An aging analysis of past due loans (in thousands), segregated by class, as of March 31, 2017, was as follows: Loans 30-89 Days Loans Total Past Current Total Accruing Real Estate: Land Development and Construction $ 151 $ 78 $ 229 $ 26,528 $ 26,757 $ — Farmland 358 62 420 16,868 17,288 — 1-4 1,782 208 1,990 94,050 96,040 1 Commercial Real Estate 1,601 305 1,906 176,560 178,466 15 Total Real Estate Loans 3,892 653 4,545 314,006 318,551 16 Business Loans: Commercial and Industrial Loans 207 61 268 55,460 55,728 — Farm Production and Other Farm Loans 9 — 9 857 866 — Total Business Loans 216 61 277 56,317 56,594 — Consumer Loans: Credit Cards 17 5 22 1,103 1,125 5 Other Consumer Loans 485 43 528 16,535 17,063 43 Total Consumer Loans 502 48 550 17,638 18,188 48 Total Loans $ 4,610 $ 762 $ 5,372 $ 387,961 $ 393,333 $ 64 An aging analysis of past due loans (in thousands), segregated by class, as of December 31, 2016 was as follows: Loans 30-89 Days Loans Total Past Current Total Accruing Real Estate: Land Development and Construction $ 208 $ 78 $ 286 $ 23,507 $ 23,793 $ — Farmland 584 65 649 17,526 18,175 — 1-4 2,993 596 3,589 94,223 97,812 179 Commercial Real Estate 903 185 1,088 179,792 180,880 — Total Real Estate Loans 4,688 924 5,612 315,048 320,660 179 Business Loans: Commercial and Industrial Loans 66 186 252 53,509 53,761 — Farm Production and Other Farm Loans — — — 765 765 — Total Business Loans 66 186 252 54,274 54,526 — Consumer Loans: Credit Cards 7 3 10 1,146 1,156 3 Other Consumer Loans 788 27 815 17,495 18,310 27 Total Consumer Loans 795 30 825 18,641 19,466 30 Total Loans $ 5,549 $ 1,140 $ 6,689 $ 387,963 $ 394,652 $ 209 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 March 31, 2017, 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 Allowance Real Estate: Land Development and Construction $ — $ — $ — $ — $ — $ — Farmland — — — — — 14 1-4 684 — 684 684 171 211 Commercial Real Estate 5,241 — 5,241 5,241 479 474 Total Real Estate Loans 5,925 — 5,925 5,925 650 699 Business Loans: Commercial and Industrial Loans 61 — 61 61 61 50 Farm Production and Other Farm Loans — — — — — — Total Business Loans 61 — 61 61 61 50 Total Loans $ 5,986 $ — $ 5,986 $ 5,986 $ 711 $ 749 Impaired loans (in thousands) as of December 31, 2016, 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 Allowance Real Estate: Land Development and Construction $ — $ — $ — $ — $ — $ 43 Farmland 163 — 163 163 28 87 1-4 1,448 — 1,448 1,448 252 218 Commercial Real Estate 5,327 — 5,327 5,327 469 1,577 Total Real Estate Loans 6,938 — 6,938 6,938 749 1,925 Business Loans: Commercial and Industrial Loans 126 — 126 126 38 19 Farm Production and Other Farm Loans — — — — — — Total Business Loans 126 — 126 126 38 19 Total Loans $ 7,064 $ — $ 7,064 $ 7,064 $ 787 $ 1,944 The following table presents troubled debt restructurings (in thousands, except for number of loans), segregated by class: Pre-Modification Post-Modification Outstanding Outstanding Number of Recorded Recorded March 31, 2017 Loans Investment Investment Commercial real estate 3 $ 4,871 $ 3,272 Total 3 $ 4,871 $ 3,272 Pre-Modification Post-Modification Outstanding Outstanding Number of Recorded Recorded December 31, 2016 Loans Investment Investment Commercial real estate 3 $ 4,871 $ 3,288 Total 3 $ 4,871 $ 3,288 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, 2017 3 $ 3,288 Reductions due to: Principal paydowns (16 ) Total at March 31, 2017 3 $ 3,272 The allocated allowance for loan losses attributable to restructured loans was $174,274 at March 31, 2017 and December 31, 2016. The Corporation had no remaining availability under commitments to lend additional funds on these troubled debt restructurings as of March 31, 2017. 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. Grade 8. DOUBTFUL - A loan classified as doubtful has all the weaknesses of a substandard classification and the added characteristic that the weakness makes collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable or improbable. The possibility of loss is extremely high, but because of certain important and reasonable specific pending factors which may work to the advantage and strengthening of the asset, its classification as an estimated loss is deferred until its more exact status may be determined. A doubtful classification could reflect the fact that the primary source of repayment is gone and serious doubt exists as to the quality of a secondary source of repayment. Grade 9. LOSS - Loans classified as loss are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the asset has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may occur in the future. Also included in this classification is the defined loss portion of loans rated substandard assets and doubtful assets. These internally assigned grades are updated on a continual basis throughout the course of the year and represent management’s most updated judgment regarding grades at March 31, 2017. The following table details the amount of gross loans (in thousands), segregated by loan grade and class, as of March 31, 2017: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 26,082 $ 333 $ 342 $ — $ — $ 26,757 Farmland 15,780 604 904 — — 17,288 1-4 84,941 2,116 8,983 — — 96,040 Commercial Real Estate 159,175 11,089 8,202 — — 178,466 Total Real Estate Loans 285,978 14,142 18,431 — — 318,551 Business Loans: Commercial and Industrial Loans 54,004 1,459 204 — 61 55,728 Farm Production and Other Farm Loans 832 25 9 — — 866 Total Business Loans 54,836 1,484 213 — 61 56,594 Consumer Loans: Credit Cards 1,120 — 5 — — 1,125 Other Consumer Loans 16,692 70 300 1 — 17,063 Total Consumer Loans 17,812 70 305 1 — 18,188 Total Loans $ 358,626 $ 15,696 $ 18,949 $ 1 $ 61 $ 393,333 The following table details the amount of gross loans (in thousands) segregated by loan grade and class, as of December 31, 2016: Satisfactory Special Substandard Doubtful Loss Total Real Estate: Land Development and Construction $ 23,038 $ 186 $ 569 $ — $ — $ 23,793 Farmland 16,448 776 951 — — 18,175 1-4 Family Mortgages 86,043 1,754 10,015 — — 97,812 Commercial Real Estate 161,323 11,072 8,485 — — 180,880 Total Real Estate Loans 286,852 13,788 20,020 — — 320,660 Business Loans: Commercial and Industrial Loans 51,985 1,427 349 — — 53,761 Farm Production and Other Farm Loans 727 28 10 — — 765 Total Business Loans 52,712 1,455 359 — — 54,526 Consumer Loans: Credit Cards 1,153 — 3 — — 1,156 Other Consumer Loans 18,027 149 132 2 — 18,310 Total Consumer Loans 19,180 149 135 2 — 19,466 Total Loans $ 358,744 $ 15,392 $ 20,514 $ 2 $ — $ 394,652 The allowance for loan losses is a reserve established through a provision for loan losses charged to expense, which represents management’s best estimate of probable losses within the existing portfolio of loans. The allowance, in the judgment of management, is necessary to reserve for estimated loan losses and risks inherent in the loan portfolio. The allowance on the majority of the loan portfolio is calculated using a historical chargeoff percentage applied to the current loan balances by loan segment. This historical period is the average of the previous twenty quarters with the most current quarters weighted more heavily to show the effect of the most recent chargeoff activity. This percentage is also adjusted for economic factors such as local unemployment and general business conditions, both local and nationwide. The group of loans that are considered to be impaired are individually evaluated for possible loss and a specific reserve is established to cover any loss contingency. Loans that are determined to be a loss with no benefit of remaining in the portfolio are charged off to the allowance. These specific reserves are reviewed periodically for continued impairment and adequacy of the specific reserve and are adjusted when necessary. The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2017: Real Business March 31, 2017 Estate Loans Consumer Total Beginning Balance, January 1, 2017 $ 3,117,134 $ 257,554 $ 528,108 $ 3,902,796 Provision for possible loan losses (282,820 ) 175,477 (43,877 ) (151,220 ) Chargeoffs 4,107 67,850 12,046 84,003 Recoveries 12,465 254 21,622 34,341 Net chargeoffs (8,358 ) 67,596 (9,576 ) 49,662 Ending Balance $ 2,842,672 $ 365,435 $ 493,807 $ 3,701,914 Period end allowance allocated to: Loans individually evaluated for impairment $ 649,449 $ 61,288 $ — $ 710,737 Loans collectively evaluated for impairment 2,193,223 304,147 493,807 2,991,177 Ending Balance, March 31, 2017 $ 2,842,672 $ 365,435 $ 493,807 $ 3,701,914 The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2016: Real Business March 31, 2016 Estate Loans Consumer Total Beginning Balance, January 1, 2016 $ 5,238,895 $ 643,248 $ 591,560 $ 6,473,703 Provision for possible loan losses (5,593 ) (39,517 ) 105,608 60,498 Chargeoffs 1,557,871 79 12,361 1,570,311 Recoveries 8,806 6,005 30,041 44,852 Net chargeoffs 1,549,065 (5,926 ) (17,680 ) 1,525,459 Ending Balance $ 3,684,237 $ 609,657 $ 714,848 $ 5,008,742 Period end allowance allocated to: Loans individually evaluated for impairment $ 1,379,937 $ — $ — $ 1,379,937 Loans collectively evaluated for impairment 2,304,300 609,657 714,848 3,628,805 Ending Balance, March 31, 2016 $ 3,684,237 $ 609,657 $ 714,848 $ 5,008,742 The Corporation’s recorded investment in loans as of March 31, 2017 and December 31, 2016 related to each balance in the allowance for possible loan losses by portfolio segment and disaggregated on the basis of the Corporation’s impairment methodology was as follows (in thousands): Real Business March 31, 2017 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 5,925 $ 61 $ — $ 5,986 Loans collectively evaluated for general impairment 312,626 56,533 18,188 387,347 $ 318,551 $ 56,594 $ 18,188 $ 393,333 Real Business December 31, 2016 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 6,938 $ 126 $ — $ 7,064 Loans collectively evaluated for general impairment 313,722 54,400 19,466 387,588 $ 320,660 $ 54,526 $ 19,466 $ 394,652

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 8. Fair Value of Financial Instruments The fair value topic of the ASC establishes a framework for measuring fair value and requires enhanced disclosures about fair value measurements. This topic clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. This topic also requires disclosure about how fair value was determined for assets and liabilities and establishes a hierarchy for which these assets and liabilities must be grouped, based on significant levels of inputs as follows: Level 1 Quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2 Inputs other than quoted prices in active markets for identical assets and liabilities included in Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in markets that are not active; or Level 3 Unobservable inputs for an asset or liability, such as discounted cash flow models or valuations. The determination of where assets and liabilities fall within this hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following table presents assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2017: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 199,552,252 $ — $ 199,552,252 Mortgage-backed securities — 143,565,587 — 143,565,587 State, county and municipal obligations — 143,837,423 — 143,837,423 Other investments — — 2,985,759 2,985,759 Total $ — $ 486,955,262 $ 2,985,759 $ 489,941,021 The following table presents assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2016: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 199,966,608 $ — $ 199,966,608 Mortgage-backed securities — 148,264,710 — 148,264,710 State, county and municipal obligations — 144,922,150 — 144,922,150 Other investments — — 2,971,106 2,971,106 Total $ — $ 493,153,468 $ 2,971,106 $ 496,124,574 The following table reports the activity in assets measured at fair value on a recurring basis using significant unobservable inputs: Fair Value Measurements Using: Significant Unobservable Inputs (Level 3) Structured Financial Product As of March 31, 2017 2016 Beginning Balance $ 2,971,106 $ 2,915,709 Principal payments received (4,466 ) (15,190 ) Unrealized gains included in other comprehensive income 19,119 25,668 Ending Balance $ 2,985,759 $ 2,926,187 The Corporation recorded no gains or losses in earnings for the period ended March 31, 2017 or December 31, 2016 that were attributable to the change in unrealized gains or losses relating to assets still held at the reporting date. The following table presents information as of March 31, 2017 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a recurring basis: Financial instrument Fair Value Valuation Technique Significant Range of Inputs Trust preferred securities $ 2,985,759 Discounted cash flows Default rate 0-100% For assets measured at fair value on a nonrecurring basis during 2017 that were still held on the Corporation’s balance sheet at March 31, 2017, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 2,515,509 $ 2,515,509 Other real estate owned — — 1,413,700 1,413,700 Total $ — $ — $ 3,929,209 $ 3,929,209 The following table presents information as of March 31, 2017 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Financial instrument Fair Value Valuation Technique Significant Unobservable Inputs Range of Impaired loans $ 2,515,509 Appraised value of collateral less estimated costs to sell Estimated costs to sell 25 % OREO 1,413,700 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 2016 that were still held on the Corporation’s balance sheet at December 31, 2016, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 3,591,516 $ 3,591,516 Other real estate owned — — 1,893,949 1,893,949 Total $ — $ — $ 5,485,465 $ 5,485,465 Impaired loans with a carrying value of $5,985,642 and $7,064,185 had an allocated allowance for loan losses of $710,737 and $786,893 at March 31, 2017 and December 31, 2016, respectively. The allocated allowance is based on the carrying value of the impaired loan and the fair value of the underlying collateral less estimated costs to sell. Real estate acquired through foreclosure or deed in lien, sometimes referred to as other real estate owned (“OREO”) acquired during the three-month period ended March 31, 2017, and recorded at fair value, less costs to sell, was $11,200, of which $0 was acquired and sold during this period. There were no writedowns during the period on properties owned. OREO acquired during 2016 and recorded at fair value, less costs to sell, was $2,187,125. There were $220,419 in additional writedowns during 2016 on OREO acquired in previous years. 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. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Corporation and may not be indicative of amounts that might ultimately be realized upon disposition or settlement of those assets and liabilities. The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at March 31, 2017: Fair Value Measurements Using: March 31, 2017 Carrying Quoted Prices Significant Significant Total (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 27,706,912 $ 27,706,912 $ — $ — $ 27,706,912 Interest bearing deposits with banks 73,714,719 73,714,719 — — 73,714,719 Securities available-for-sale 489,941,021 — 486,955,262 2,985,759 489,941,021 Net loans 389,183,439 — — 389,851,680 389,851,680 Financial liabilities Deposits $ 789,214,876 $ 595,106,483 $ — $ 194,261,809 $ 789,368,292 Federal Home Loan Bank advances 20,000,000 — — 20,214,525 20,214,525 Securities Sold under Agreement to Repurchase 141,098,287 141,098,287 — — 141,098,287 The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at December 31, 2016: December 31, 2016 Carrying Quoted Prices Significant Significant Total (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 21,688,557 $ 21,688,557 $ — $ — $ 21,688,557 Interest bearing deposits with banks 48,603,182 48,603,182 — — 48,603,182 Securities available-for-sale 496,124,574 — 493,153,468 2,971,106 496,124,574 Net loans 390,148,343 — — 391,106,337 391,106,337 Financial liabilities Deposits $ 760,152,340 $ 563,440,632 $ — $ 196,859,851 $ 760,300,483 Federal Home Loan Bank advances 20,000,000 — — 20,283,999 20,283,999 Securities Sold under Agreement to Repurchase 150,282,913 150,282,913 — — 150,282,913 The fair value estimates, methods and assumptions used by the Corporation in estimating its fair value disclosures for financial statements were as follows: Cash and Due from Banks and Interest Bearing Deposits with Banks The carrying amounts reported in the balance sheet for these instruments approximate fair value because of their immediate and shorter-term maturities, which are considered to be three months or less when purchased. Securities Available-for-Sale Fair values for investment securities are based on quoted market prices, when available (Level 1). If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments (Level 2). When neither quoted prices nor comparable instruments are available, unobservable inputs are needed to form an expected future cash flow analysis to establish fair values (Level 3). The Corporation owns certain beneficial interests in one collateralized debt obligation secured by community bank trust preferred securities. These interests do not trade in a liquid market, and therefore, market quotes are not a reliable indicator of their ultimate realizability. The Corporation utilizes a discounted cash flow model using inputs of (1) market yields of trust-preferred securities as the discount rate and (2) expected cash flows which are estimated using assumptions related to defaults, deferrals and prepayments to determine the fair values of these beneficial interests. Many of the factors that adjust the timing and extent of cash flows are based on judgment and not directly observable in the markets. Therefore, these fair values are classified as Level 3 valuations for accounting and disclosure purposes. Since observable transactions in these securities are extremely rare, the Corporation uses assumptions that a market participant would use in valuing these instruments. These assumptions primarily include cash flow estimates and market discount rates. The cash flow estimates are sensitive to the assumptions related to the ability of the issuers to pay the underlying trust preferred securities according to their terms. The market discount rates depend on transactions, which are rare given the lack of interest of investors in these types of beneficial interests. Net Loans For variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values. The fair values for other loans, including impaired loans, (i.e., commercial real estate and rental property mortgage loans, commercial and industrial loans, financial institution loans, and agricultural loans) are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Deposits The fair values for demand deposits, NOW and money market accounts and savings accounts are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The carrying amounts for variable-rate, fixed-term money market accounts and time deposits approximate their fair values at the reporting date. Fair values for fixed-rate time deposits are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits. Federal Home Loan Bank (“FHLB”) Borrowings The fair value of FHLB advances is based on a discounted cash flow analysis. Securities Sold Under Agreement to Repurchase Due to the short term nature of these instruments, which is generally three months or less, the carrying amount is equal to the fair value. Off-Balance The fair value of commitments to extend credit and letters of credit are estimated using fees currently charged to enter into similar agreements. The fees associated with these financial instruments are not material.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2017
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Note 9. Recent Accounting Pronouncements In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting 2016-09”). 2016-09 2016-09 On June 16, 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments 2016-13”). held-to-maturity In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments 2016-15”). 2016-15 zero-coupon In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) 2016-02”). ASU 2016-02 right-of-use 2016-02 2016-02 In March 2017, the FASB issued ASU No. 2017-08, Receivables- Nonrefundable Fees and Other Costs (Subtopic 310-20) 2017-08”). ASU 2017-08 2017-08 2017-08

Recent Accounting Pronounceme16

Recent Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting 2016-09”). 2016-09 2016-09 On June 16, 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments 2016-13”). held-to-maturity In August 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments 2016-15”). 2016-15 zero-coupon In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) 2016-02”). ASU 2016-02 right-of-use 2016-02 2016-02 In March 2017, the FASB issued ASU No. 2017-08, Receivables- Nonrefundable Fees and Other Costs (Subtopic 310-20) 2017-08”). ASU 2017-08 2017-08 2017-08

Net Income per Share (Tables)

Net Income per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Net income per share was computed as follows: For the Three Months Ended March 31, 2017 2016 Basic weighted average shares outstanding 4,883,679 4,875,079 Dilutive effect of granted options 14,214 10,061 Diluted weighted average shares outstanding 4,897,893 4,885,140 Net income $ 1,437,325 $ 1,526,170 Net income per share-basic $ 0.29 $ 0.31 Net income per share-diluted $ 0.29 $ 0.31

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity	The following table is a summary of the stock option activity for the three months ended March 31, 2017. Directors’ Plan Employees’ Plan 2013 Plan Number Weighted Number Weighted Number Weighted Outstanding at December 31, 2016 78,000 $ 21.08 — $ — — $ — Granted — — — — — — Exercised (4,500 ) 20.58 — — — — Expired — — — — — — Outstanding at March 31, 2017 73,500 $ 21.11 — $ — — $ —

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2017
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 March 31, 2017 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 204,424,326 $ — $ 4,872,074 $ 199,552,252 Mortgage backed securities 147,072,647 334,610 3,841,670 143,565,587 State, County, Municipals 148,270,381 1,305,634 5,738,592 143,837,423 Other investments 2,865,293 120,466 — 2,985,759 Total $ 502,632,647 $ 1,760,710 $ 14,452,336 $ 489,941,021 December 31, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Securities available-for-sale Obligations of U.S. Government agencies $ 207,080,794 $ — $ 7,114,186 $ 199,966,608 Mortgage backed securities 152,765,924 340,419 4,841,633 148,264,710 State, County, Municipals 150,503,811 1,269,356 6,851,017 144,922,150 Other investments 2,869,761 101,345 — 2,971,106 Total $ 513,220,290 $ 1,711,120 $ 18,806,836 $ 496,124,574
Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity	The amortized cost and estimated fair value of securities by contractual maturity at March 31, 2017 and December 31, 2016 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations. March 31, 2017 December 31, 2016 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Available-for-sale Due in one year or less $ 5,356,998 $ 5,372,879 $ 6,333,181 $ 6,370,921 Due after one year through five years 52,866,510 52,817,589 30,059,503 30,278,557 Due after five years through ten years 103,343,414 101,454,474 126,336,589 122,562,724 Due after ten years 341,065,725 330,296,079 350,491,017 336,912,372 Total $ 502,632,647 $ 489,941,021 $ 513,220,290 $ 496,124,574
Summary of Unrealized Loss Information for Available-for-sale Securities	A summary of unrealized loss information for securities available-for-sale, March 31, 2017 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 $ 194,896 $ 4,562 $ 4,656 $ 310 $ 199,552 $ 4,872 Mortgage backed securities 114,363 3,314 23,050 527 137,413 3,841 State, County, Municipal 88,822 5,594 3,381 145 92,203 5,739 Total $ 398,081 $ 13,470 $ 31,087 $ 982 $ 429,168 $ 14,452 Less than 12 months 12 months or more Total December 31, 2016 Fair Unrealized Fair Unrealized Fair Unrealized Value Losses Value Losses Value Losses Description of Securities Obligations of U.S. government agencies $ 195,363 $ 6,753 $ 4,604 $ 362 $ 199,967 $ 7,115 Mortgage backed securities 117,438 4,183 24,353 658 141,791 4,841 State, County, Municipal 95,088 6,663 3,092 188 98,180 6,851 Total $ 407,889 $ 17,599 $ 32,049 $ 1,208 $ 439,938 $ 18,807

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2017
Receivables [Abstract]
Composition of Net Loans	The composition of net loans (in thousands) at March 31, 2017 and December 31, 2016 was as follows: March 31, 2017 December 31, 2016 Real Estate: Land Development and Construction $ 26,757 $ 23,793 Farmland 17,288 18,175 1-4 96,040 97,812 Commercial Real Estate 178,466 180,880 Total Real Estate Loans 318,551 320,660 Business Loans: Commercial and Industrial Loans 55,728 53,761 Farm Production and Other Farm Loans 866 765 Total Business Loans 56,594 54,526 Consumer Loans: Credit Cards 1,125 1,156 Other Consumer Loans 17,063 18,310 Total Consumer Loans 18,188 19,466 Total Gross Loans 393,333 394,652 Unearned Income (448 ) (601 ) Allowance for Loan Losses (3,702 ) (3,903 ) Loans, net $ 389,183 $ 390,148
Period-End Non-Accrual Loans, Segregated by Class	Period-end, non-accrual March 31, 2017 December 31, 2016 Real Estate: Land Development and Construction $ 128 $ 133 Farmland 298 234 1-4 2,246 1,954 Commercial Real Estate 6,061 6,293 Total Real Estate Loans 8,733 8,614 Business Loans: Commercial and Industrial Loans 153 239 Total Business Loans 153 239 Consumer Loans: Other Consumer Loans 100 26 Total Consumer Loans 100 26 Total Nonaccrual Loans $ 8,986 $ 8,879
Aging Analysis of Past Due Loans, Segregated by Class	An aging analysis of past due loans (in thousands), segregated by class, as of March 31, 2017, was as follows: Loans 30-89 Days Loans Total Past Current Total Accruing Real Estate: Land Development and Construction $ 151 $ 78 $ 229 $ 26,528 $ 26,757 $ — Farmland 358 62 420 16,868 17,288 — 1-4 1,782 208 1,990 94,050 96,040 1 Commercial Real Estate 1,601 305 1,906 176,560 178,466 15 Total Real Estate Loans 3,892 653 4,545 314,006 318,551 16 Business Loans: Commercial and Industrial Loans 207 61 268 55,460 55,728 — Farm Production and Other Farm Loans 9 — 9 857 866 — Total Business Loans 216 61 277 56,317 56,594 — Consumer Loans: Credit Cards 17 5 22 1,103 1,125 5 Other Consumer Loans 485 43 528 16,535 17,063 43 Total Consumer Loans 502 48 550 17,638 18,188 48 Total Loans $ 4,610 $ 762 $ 5,372 $ 387,961 $ 393,333 $ 64 An aging analysis of past due loans (in thousands), segregated by class, as of December 31, 2016 was as follows: Loans 30-89 Days Loans Total Past Current Total Accruing Real Estate: Land Development and Construction $ 208 $ 78 $ 286 $ 23,507 $ 23,793 $ — Farmland 584 65 649 17,526 18,175 — 1-4 2,993 596 3,589 94,223 97,812 179 Commercial Real Estate 903 185 1,088 179,792 180,880 — Total Real Estate Loans 4,688 924 5,612 315,048 320,660 179 Business Loans: Commercial and Industrial Loans 66 186 252 53,509 53,761 — Farm Production and Other Farm Loans — — — 765 765 — Total Business Loans 66 186 252 54,274 54,526 — Consumer Loans: Credit Cards 7 3 10 1,146 1,156 3 Other Consumer Loans 788 27 815 17,495 18,310 27 Total Consumer Loans 795 30 825 18,641 19,466 30 Total Loans $ 5,549 $ 1,140 $ 6,689 $ 387,963 $ 394,652 $ 209
Impaired Loans, Segregated by Class	Impaired loans (in thousands) as of March 31, 2017, 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 Allowance Real Estate: Land Development and Construction $ — $ — $ — $ — $ — $ — Farmland — — — — — 14 1-4 684 — 684 684 171 211 Commercial Real Estate 5,241 — 5,241 5,241 479 474 Total Real Estate Loans 5,925 — 5,925 5,925 650 699 Business Loans: Commercial and Industrial Loans 61 — 61 61 61 50 Farm Production and Other Farm Loans — — — — — — Total Business Loans 61 — 61 61 61 50 Total Loans $ 5,986 $ — $ 5,986 $ 5,986 $ 711 $ 749 Impaired loans (in thousands) as of December 31, 2016, 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 Allowance Real Estate: Land Development and Construction $ — $ — $ — $ — $ — $ 43 Farmland 163 — 163 163 28 87 1-4 1,448 — 1,448 1,448 252 218 Commercial Real Estate 5,327 — 5,327 5,327 469 1,577 Total Real Estate Loans 6,938 — 6,938 6,938 749 1,925 Business Loans: Commercial and Industrial Loans 126 — 126 126 38 19 Farm Production and Other Farm Loans — — — — — — Total Business Loans 126 — 126 126 38 19 Total Loans $ 7,064 $ — $ 7,064 $ 7,064 $ 787 $ 1,944
Troubled Debt Restructurings Segregated by Class	The following table presents troubled debt restructurings (in thousands, except for number of loans), segregated by class: Pre-Modification Post-Modification Outstanding Outstanding Number of Recorded Recorded March 31, 2017 Loans Investment Investment Commercial real estate 3 $ 4,871 $ 3,272 Total 3 $ 4,871 $ 3,272 Pre-Modification Post-Modification Outstanding Outstanding Number of Recorded Recorded December 31, 2016 Loans Investment Investment Commercial real estate 3 $ 4,871 $ 3,288 Total 3 $ 4,871 $ 3,288
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, 2017 3 $ 3,288 Reductions due to: Principal paydowns (16 ) Total at March 31, 2017 3 $ 3,272
Detailed Amount of Gross Loans Segregated by Loan Grade and Class	The following table details the amount of gross loans (in thousands), segregated by loan grade and class, as of March 31, 2017: Special Satisfactory Mention Substandard Doubtful Loss Total 1,2,3,4 5,6 7 8 9 Loans Real Estate: Land Development and Construction $ 26,082 $ 333 $ 342 $ — $ — $ 26,757 Farmland 15,780 604 904 — — 17,288 1-4 84,941 2,116 8,983 — — 96,040 Commercial Real Estate 159,175 11,089 8,202 — — 178,466 Total Real Estate Loans 285,978 14,142 18,431 — — 318,551 Business Loans: Commercial and Industrial Loans 54,004 1,459 204 — 61 55,728 Farm Production and Other Farm Loans 832 25 9 — — 866 Total Business Loans 54,836 1,484 213 — 61 56,594 Consumer Loans: Credit Cards 1,120 — 5 — — 1,125 Other Consumer Loans 16,692 70 300 1 — 17,063 Total Consumer Loans 17,812 70 305 1 — 18,188 Total Loans $ 358,626 $ 15,696 $ 18,949 $ 1 $ 61 $ 393,333 The following table details the amount of gross loans (in thousands) segregated by loan grade and class, as of December 31, 2016: Satisfactory Special Substandard Doubtful Loss Total Real Estate: Land Development and Construction $ 23,038 $ 186 $ 569 $ — $ — $ 23,793 Farmland 16,448 776 951 — — 18,175 1-4 Family Mortgages 86,043 1,754 10,015 — — 97,812 Commercial Real Estate 161,323 11,072 8,485 — — 180,880 Total Real Estate Loans 286,852 13,788 20,020 — — 320,660 Business Loans: Commercial and Industrial Loans 51,985 1,427 349 — — 53,761 Farm Production and Other Farm Loans 727 28 10 — — 765 Total Business Loans 52,712 1,455 359 — — 54,526 Consumer Loans: Credit Cards 1,153 — 3 — — 1,156 Other Consumer Loans 18,027 149 132 2 — 18,310 Total Consumer Loans 19,180 149 135 2 — 19,466 Total Loans $ 358,744 $ 15,392 $ 20,514 $ 2 $ — $ 394,652
Detailed Activity in Allowance for Possible Loan Losses by Portfolio Segment	The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2017: Real Business March 31, 2017 Estate Loans Consumer Total Beginning Balance, January 1, 2017 $ 3,117,134 $ 257,554 $ 528,108 $ 3,902,796 Provision for possible loan losses (282,820 ) 175,477 (43,877 ) (151,220 ) Chargeoffs 4,107 67,850 12,046 84,003 Recoveries 12,465 254 21,622 34,341 Net chargeoffs (8,358 ) 67,596 (9,576 ) 49,662 Ending Balance $ 2,842,672 $ 365,435 $ 493,807 $ 3,701,914 Period end allowance allocated to: Loans individually evaluated for impairment $ 649,449 $ 61,288 $ — $ 710,737 Loans collectively evaluated for impairment 2,193,223 304,147 493,807 2,991,177 Ending Balance, March 31, 2017 $ 2,842,672 $ 365,435 $ 493,807 $ 3,701,914 The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2016: Real Business March 31, 2016 Estate Loans Consumer Total Beginning Balance, January 1, 2016 $ 5,238,895 $ 643,248 $ 591,560 $ 6,473,703 Provision for possible loan losses (5,593 ) (39,517 ) 105,608 60,498 Chargeoffs 1,557,871 79 12,361 1,570,311 Recoveries 8,806 6,005 30,041 44,852 Net chargeoffs 1,549,065 (5,926 ) (17,680 ) 1,525,459 Ending Balance $ 3,684,237 $ 609,657 $ 714,848 $ 5,008,742 Period end allowance allocated to: Loans individually evaluated for impairment $ 1,379,937 $ — $ — $ 1,379,937 Loans collectively evaluated for impairment 2,304,300 609,657 714,848 3,628,805 Ending Balance, March 31, 2016 $ 3,684,237 $ 609,657 $ 714,848 $ 5,008,742
Recorded Investment in Loans Related to Balance in Allowance for Possible Loan Losses by Portfolio Segment	The Corporation’s recorded investment in loans as of March 31, 2017 and December 31, 2016 related to each balance in the allowance for possible loan losses by portfolio segment and disaggregated on the basis of the Corporation’s impairment methodology was as follows (in thousands): Real Business March 31, 2017 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 5,925 $ 61 $ — $ 5,986 Loans collectively evaluated for general impairment 312,626 56,533 18,188 387,347 $ 318,551 $ 56,594 $ 18,188 $ 393,333 Real Business December 31, 2016 Estate Loans Consumer Total Loans individually evaluated for specific impairment $ 6,938 $ 126 $ — $ 7,064 Loans collectively evaluated for general impairment 313,722 54,400 19,466 387,588 $ 320,660 $ 54,526 $ 19,466 $ 394,652

Fair Value of Financial Instr21

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2017
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table presents assets and liabilities that were measured at fair value on a recurring basis as of March 31, 2017: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 199,552,252 $ — $ 199,552,252 Mortgage-backed securities — 143,565,587 — 143,565,587 State, county and municipal obligations — 143,837,423 — 143,837,423 Other investments — — 2,985,759 2,985,759 Total $ — $ 486,955,262 $ 2,985,759 $ 489,941,021 The following table presents assets and liabilities that were measured at fair value on a recurring basis as of December 31, 2016: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Securities available for sale Obligations of U.S. Government Agencies $ — $ 199,966,608 $ — $ 199,966,608 Mortgage-backed securities — 148,264,710 — 148,264,710 State, county and municipal obligations — 144,922,150 — 144,922,150 Other investments — — 2,971,106 2,971,106 Total $ — $ 493,153,468 $ 2,971,106 $ 496,124,574
Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs	The following table reports the activity in assets measured at fair value on a recurring basis using significant unobservable inputs: Fair Value Measurements Using: Significant Unobservable Inputs (Level 3) Structured Financial Product As of March 31, 2017 2016 Beginning Balance $ 2,971,106 $ 2,915,709 Principal payments received (4,466 ) (15,190 ) Unrealized gains included in other comprehensive income 19,119 25,668 Ending Balance $ 2,985,759 $ 2,926,187
Asset Measured at Fair Value on Nonrecurring Basis	For assets measured at fair value on a nonrecurring basis during 2017 that were still held on the Corporation’s balance sheet at March 31, 2017, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 2,515,509 $ 2,515,509 Other real estate owned — — 1,413,700 1,413,700 Total $ — $ — $ 3,929,209 $ 3,929,209 For assets measured at fair value on a nonrecurring basis during 2016 that were still held on the Corporation’s balance sheet at December 31, 2016, the following table provides the hierarchy level and the fair value of the related assets: Fair Value Measurements Using: Quoted Prices Significant Significant (Level 1) (Level 2) (Level 3) Totals Impaired loans $ — $ — $ 3,591,516 $ 3,591,516 Other real estate owned — — 1,893,949 1,893,949 Total $ — $ — $ 5,485,465 $ 5,485,465
Carrying Value and Estimated Fair Value of Financial Instruments	The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at March 31, 2017: Fair Value Measurements Using: March 31, 2017 Carrying Quoted Prices Significant Significant Total (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 27,706,912 $ 27,706,912 $ — $ — $ 27,706,912 Interest bearing deposits with banks 73,714,719 73,714,719 — — 73,714,719 Securities available-for-sale 489,941,021 — 486,955,262 2,985,759 489,941,021 Net loans 389,183,439 — — 389,851,680 389,851,680 Financial liabilities Deposits $ 789,214,876 $ 595,106,483 $ — $ 194,261,809 $ 789,368,292 Federal Home Loan Bank advances 20,000,000 — — 20,214,525 20,214,525 Securities Sold under Agreement to Repurchase 141,098,287 141,098,287 — — 141,098,287 The following represents the carrying value and estimated fair value of the Corporation’s financial instruments at December 31, 2016: December 31, 2016 Carrying Quoted Prices Significant Significant Total (Level 1) (Level 2) (Level 3) Financial assets Cash and due from banks $ 21,688,557 $ 21,688,557 $ — $ — $ 21,688,557 Interest bearing deposits with banks 48,603,182 48,603,182 — — 48,603,182 Securities available-for-sale 496,124,574 — 493,153,468 2,971,106 496,124,574 Net loans 390,148,343 — — 391,106,337 391,106,337 Financial liabilities Deposits $ 760,152,340 $ 563,440,632 $ — $ 196,859,851 $ 760,300,483 Federal Home Loan Bank advances 20,000,000 — — 20,283,999 20,283,999 Securities Sold under Agreement to Repurchase 150,282,913 150,282,913 — — 150,282,913
Fair Value, Measurements, Recurring [Member]
Significant Unobservable Inputs (Level 3) Used in Valuation of Assets and Liabilities Measured at Fair Value	The following table presents information as of March 31, 2017 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a recurring basis: Financial instrument Fair Value Valuation Technique Significant Range of Inputs Trust preferred securities $ 2,985,759 Discounted cash flows Default rate 0-100%
Fair Value, Measurements, Nonrecurring [Member]
Significant Unobservable Inputs (Level 3) Used in Valuation of Assets and Liabilities Measured at Fair Value	The following table presents information as of March 31, 2017 about significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis: Financial instrument Fair Value Valuation Technique Significant Unobservable Inputs Range of Impaired loans $ 2,515,509 Appraised value of collateral less estimated costs to sell Estimated costs to sell 25 % OREO 1,413,700 Appraised value of collateral less estimated costs to sell Estimated costs to sell 25 %

Commitments and Contingent Li22

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Loan commitments	$ 35,517,643	$ 37,194,220
Letters of credit outstanding	$ 3,370,180	$ 3,456,180

Net Income per Share - Earnings

Net Income per Share - Earnings Per Share (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	4,883,679	4,875,079
Dilutive effect of granted options	14,214	10,061
Diluted weighted average shares outstanding	4,897,893	4,885,140
Net income	$ 1,437,325	$ 1,526,170
Net income per share-basic	$ 0.29	$ 0.31
Net income per share-diluted	$ 0.29	$ 0.31

Equity Compensation Plans - Sum

Equity Compensation Plans - Summary of Stock Option Activity (Detail)	3 Months Ended
	Mar. 31, 2017$ / sharesshares
Employee Stock Option 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
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	78,000
Granted | shares	0
Exercised | shares	(4,500)
Expired | shares	0
Ending Balance | shares	73,500
Weighted Average Exercise Price
Beginning Balance | $ / shares	$ 21.08
Granted | $ / shares	0
Exercised | $ / shares	20.58
Expired | $ / shares	0
Ending Balance | $ / shares	$ 21.11

Equity Compensation Plans - Add

Equity Compensation Plans - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options granted	$ 268,800
Employee Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options granted	0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants		7,500
Restricted stock vesting period		1 year
Restricted stock grant date fair value		$ 161,325
Restricted stock cost		13,444
Restricted stock, deferred taxes		$ 5,016
Number of restricted Shares Vested		1,500
Directors Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options granted	268,800
2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options granted	$ 0
Granted, shares	0

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	Mar. 31, 2017USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefit	$ 0

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Securities Available-for-Sale (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 502,632,647	$ 513,220,290
Gross Unrealized Gains	1,760,710	1,711,120
Gross Unrealized Losses	14,452,336	18,806,836
Estimated Fair Value	489,941,021	496,124,574
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	204,424,326	207,080,794
Gross Unrealized Losses	4,872,074	7,114,186
Estimated Fair Value	199,552,252	199,966,608
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	147,072,647	152,765,924
Gross Unrealized Gains	334,610	340,419
Gross Unrealized Losses	3,841,670	4,841,633
Estimated Fair Value	143,565,587	148,264,710
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	148,270,381	150,503,811
Gross Unrealized Gains	1,305,634	1,269,356
Gross Unrealized Losses	5,738,592	6,851,017
Estimated Fair Value	143,837,423	144,922,150
Other Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,865,293	2,869,761
Gross Unrealized Gains	120,466	101,345
Estimated Fair Value	$ 2,985,759	$ 2,971,106

Securities - Amortized Cost a28

Securities - Amortized Cost and Estimated Fair Value of Securities by Contractual Maturity (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Available-for-sale, Amortized Cost
Due in one year or less	$ 5,356,998	$ 6,333,181
Due after one year through five years	52,866,510	30,059,503
Due after five years through ten years	103,343,414	126,336,589
Due after ten years	341,065,725	350,491,017
Amortized Cost	502,632,647	513,220,290
Available-for-sale, Estimated Fair Value
Due in one year or less	5,372,879	6,370,921
Due after one year through five years	52,817,589	30,278,557
Due after five years through ten years	101,454,474	122,562,724
Due after ten years	330,296,079	336,912,372
Total Fair Value	$ 489,941,021	$ 496,124,574

Securities - Summary of Unreali

Securities - Summary of Unrealized Loss Information for Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 398,081	$ 407,889
Less than 12 months Unrealized Losses	13,470	17,599
12 months or more Fair Value	31,087	32,049
12 months or more Unrealized Losses	982	1,208
Total Fair Value	429,168	439,938
Total Unrealized Losses	14,452	18,807
Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	194,896	195,363
Less than 12 months Unrealized Losses	4,562	6,753
12 months or more Fair Value	4,656	4,604
12 months or more Unrealized Losses	310	362
Total Fair Value	199,552	199,967
Total Unrealized Losses	4,872	7,115
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	114,363	117,438
Less than 12 months Unrealized Losses	3,314	4,183
12 months or more Fair Value	23,050	24,353
12 months or more Unrealized Losses	527	658
Total Fair Value	137,413	141,791
Total Unrealized Losses	3,841	4,841
State, County and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	88,822	95,088
Less than 12 months Unrealized Losses	5,594	6,663
12 months or more Fair Value	3,381	3,092
12 months or more Unrealized Losses	145	188
Total Fair Value	92,203	98,180
Total Unrealized Losses	$ 5,739	$ 6,851

Loans - Composition of Net Loan

Loans - Composition of Net Loans (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross Loans	$ 393,333,000	$ 394,652,000
Unearned Income	(448,000)	(601,000)
Allowance for Loan Losses	(3,701,914)	(3,902,796)	$ (5,008,742)	$ (6,473,703)
Loans, net	389,183,439	390,148,343
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	318,551,000	320,660,000
Total Gross Loans	318,551,000	320,660,000
Allowance for Loan Losses	(2,842,672)	(3,117,134)	(3,684,237)	(5,238,895)
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	26,757,000	23,793,000
Total Gross Loans	26,757,000	23,793,000
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	17,288,000	18,175,000
Total Gross Loans	17,288,000	18,175,000
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	96,040,000	97,812,000
Total Gross Loans	96,040,000	97,812,000
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	178,466,000	180,880,000
Total Gross Loans	178,466,000	180,880,000
Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	56,594,000	54,526,000
Total Gross Loans	56,594,000	54,526,000
Allowance for Loan Losses	(365,435)	(257,554)	(609,657)	(643,248)
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	55,728,000	53,761,000
Total Gross Loans	55,728,000	53,761,000
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Business loans	866,000	765,000
Total Gross Loans	866,000	765,000
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	18,188,000	19,466,000
Total Gross Loans	18,188,000	19,466,000
Allowance for Loan Losses	(493,807)	(528,108)	$ (714,848)	$ (591,560)
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,125,000	1,156,000
Total Gross Loans	1,125,000	1,156,000
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	17,063,000	18,310,000
Total Gross Loans	$ 17,063,000	$ 18,310,000

Loans - Period-End Non-Accrual

Loans - Period-End Non-Accrual Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 8,986	$ 8,879
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	8,733	8,614
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	128	133
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	298	234
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	2,246	1,954
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	6,061	6,293
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	153	239
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	153	239
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	100	26
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual Loans	$ 100	$ 26

Loans - Aging Analysis of Past

Loans - Aging Analysis of Past Due Loans, Segregated by Class (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	$ 4,610	$ 5,549
Total Past Due Loans	5,372	6,689
Current Loans	387,961	387,963
Total Gross Loans	393,333	394,652
Accruing Loans 90 or more Days Past Due	64	209
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	3,892	4,688
Total Past Due Loans	4,545	5,612
Current Loans	314,006	315,048
Total Gross Loans	318,551	320,660
Accruing Loans 90 or more Days Past Due	16	179
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	151	208
Total Past Due Loans	229	286
Current Loans	26,528	23,507
Total Gross Loans	26,757	23,793
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	358	584
Total Past Due Loans	420	649
Current Loans	16,868	17,526
Total Gross Loans	17,288	18,175
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	1,782	2,993
Total Past Due Loans	1,990	3,589
Current Loans	94,050	94,223
Total Gross Loans	96,040	97,812
Accruing Loans 90 or more Days Past Due	1	179
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	1,601	903
Total Past Due Loans	1,906	1,088
Current Loans	176,560	179,792
Total Gross Loans	178,466	180,880
Accruing Loans 90 or more Days Past Due	15
Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	216	66
Total Past Due Loans	277	252
Current Loans	56,317	54,274
Total Gross Loans	56,594	54,526
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	207	66
Total Past Due Loans	268	252
Current Loans	55,460	53,509
Total Gross Loans	55,728	53,761
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	9
Total Past Due Loans	9
Current Loans	857	765
Total Gross Loans	866	765
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	502	795
Total Past Due Loans	550	825
Current Loans	17,638	18,641
Total Gross Loans	18,188	19,466
Accruing Loans 90 or more Days Past Due	48	30
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	17	7
Total Past Due Loans	22	10
Current Loans	1,103	1,146
Total Gross Loans	1,125	1,156
Accruing Loans 90 or more Days Past Due	5	3
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 30-89 Days Past Due	485	788
Total Past Due Loans	528	815
Current Loans	16,535	17,495
Total Gross Loans	17,063	18,310
Accruing Loans 90 or more Days Past Due	43	27
Loans 90 or more Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	762	1,140
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	653	924
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	78	78
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	62	65
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	208	596
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	305	185
Loans 90 or more Days Past Due [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	61	186
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	61	186
Loans 90 or more Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due Loans	48	30
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	5	3
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	$ 43	$ 27

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum loan limit considered for impairment evaluation by management	$ 100,000
Restructured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 174,274	$ 174,274

Loans - Impaired Loans, Segrega

Loans - Impaired Loans, Segregated by Class (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 5,986,000	$ 7,064,000
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	5,985,642	7,064,185
Total Recorded Investment	5,986,000	7,064,000
Related Allowance	710,737	786,893
Average Recorded Allowance	749,000	1,944,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,925,000	6,938,000
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	5,925,000	6,938,000
Total Recorded Investment	5,925,000	6,938,000
Related Allowance	650,000	749,000
Average Recorded Allowance	699,000	1,925,000
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	0	0
Average Recorded Allowance		43,000
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance		163,000
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance		163,000
Total Recorded Investment		163,000
Related Allowance		28,000
Average Recorded Allowance	14,000	87,000
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	684,000	1,448,000
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	684,000	1,448,000
Total Recorded Investment	684,000	1,448,000
Related Allowance	171,000	252,000
Average Recorded Allowance	211,000	218,000
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,241,000	5,327,000
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	5,241,000	5,327,000
Total Recorded Investment	5,241,000	5,327,000
Related Allowance	479,000	469,000
Average Recorded Allowance	474,000	1,577,000
Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	61,000	126,000
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	61,000	126,000
Total Recorded Investment	61,000	126,000
Related Allowance	61,000	38,000
Average Recorded Allowance	50,000	19,000
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	61,000	126,000
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	61,000	126,000
Total Recorded Investment	61,000	126,000
Related Allowance	61,000	38,000
Average Recorded Allowance	50,000	19,000
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	$ 0	$ 0

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings Segregated by Class (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)Loan	Dec. 31, 2016USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	3	3
Post-Modification Outstanding Recorded Investment	$ 3,272	$ 3,288
Commercial Real Estate Portfolio Segment [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	$ 3,272	$ 3,288
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	$ 3,272	$ 3,288

Loans - Changes in Troubled Deb

Loans - Changes in Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017USD ($)Loan	Dec. 31, 2016USD ($)Loan
Receivables [Abstract]
Number of Loans | Loan	3	3
Principal paydowns, Recorded Investment	$ (16)
Post-Modification Outstanding Recorded Investment	$ 3,272	$ 3,288

Loans - Detailed Amount of Gros

Loans - Detailed Amount of Gross Loans Segregated by Loan Grade and Class (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 393,333	$ 394,652
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	318,551	320,660
Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	26,757	23,793
Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	17,288	18,175
Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	96,040	97,812
Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	178,466	180,880
Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	56,594	54,526
Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	55,728	53,761
Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	866	765
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	18,188	19,466
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,125	1,156
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	17,063	18,310
Satisfactory 1, 2, 3, 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	358,626	358,744
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	285,978	286,852
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	26,082	23,038
Satisfactory 1, 2, 3, 4 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,780	16,448
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	84,941	86,043
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	159,175	161,323
Satisfactory 1, 2, 3, 4 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	54,836	52,712
Satisfactory 1, 2, 3, 4 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	54,004	51,985
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	832	727
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	17,812	19,180
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,120	1,153
Satisfactory 1, 2, 3, 4 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	16,692	18,027
Special Mention 5,6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,696	15,392
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	14,142	13,788
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	333	186
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	604	776
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	2,116	1,754
Special Mention 5,6 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	11,089	11,072
Special Mention 5,6 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,484	1,455
Special Mention 5,6 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,459	1,427
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	25	28
Special Mention 5,6 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	70	149
Special Mention 5,6 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	70	149
Substandard 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	18,949	20,514
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	18,431	20,020
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Land Development And Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	342	569
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Farmland Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	904	951
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | 1-4 Family Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	8,983	10,015
Substandard 7 [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	8,202	8,485
Substandard 7 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	213	359
Substandard 7 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	204	349
Substandard 7 [Member] | Real Estate Loans [Member] | Farm Production and Other Farm Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	9	10
Substandard 7 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	305	135
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5	3
Substandard 7 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	300	132
Doubtful 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1	2
Doubtful 8 [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1	2
Doubtful 8 [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1	$ 2
Loss 9 [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	61
Loss 9 [Member] | Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	61
Loss 9 [Member] | Real Estate Loans [Member] | Commercial and Industrial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 61

Loans - Detailed Activity in Al

Loans - Detailed Activity in Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 3,902,796	$ 6,473,703
Provision for possible loan losses	(151,220)	60,498
Chargeoffs	84,003	1,570,311
Recoveries	34,341	44,852
Net chargeoffs	49,662	1,525,459
Ending Balance	3,701,914	5,008,742
Loans individually evaluated for impairment			$ 710,737	$ 1,379,937
Loans collectively evaluated for impairment			2,991,177	3,628,805
Ending Balance	3,701,914	5,008,742	3,701,914	5,008,742
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	3,117,134	5,238,895
Provision for possible loan losses	(282,820)	(5,593)
Chargeoffs	4,107	1,557,871
Recoveries	12,465	8,806
Net chargeoffs	(8,358)	1,549,065
Ending Balance	2,842,672	3,684,237
Loans individually evaluated for impairment			649,449	1,379,937
Loans collectively evaluated for impairment			2,193,223	2,304,300
Ending Balance	2,842,672	3,684,237	2,842,672	3,684,237
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	257,554	643,248
Provision for possible loan losses	175,477	(39,517)
Chargeoffs	67,850	79
Recoveries	254	6,005
Net chargeoffs	67,596	(5,926)
Ending Balance	365,435	609,657
Loans individually evaluated for impairment			61,288
Loans collectively evaluated for impairment			304,147	609,657
Ending Balance	365,435	609,657	365,435	609,657
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	528,108	591,560
Provision for possible loan losses	(43,877)	105,608
Chargeoffs	12,046	12,361
Recoveries	21,622	30,041
Net chargeoffs	(9,576)	(17,680)
Ending Balance	493,807	714,848
Loans collectively evaluated for impairment			493,807	714,848
Ending Balance	$ 493,807	$ 714,848	$ 493,807	$ 714,848

Loans - Recorded Investment in

Loans - Recorded Investment in Loans Related to Balance in Allowance for Possible Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	$ 5,986	$ 7,064
Loans collectively evaluated for general impairment	387,347	387,588
Total Gross Loans	393,333	394,652
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	5,925	6,938
Loans collectively evaluated for general impairment	312,626	313,722
Total Gross Loans	318,551	320,660
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	61	126
Loans collectively evaluated for general impairment	56,533	54,400
Total Gross Loans	56,594	54,526
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans collectively evaluated for general impairment	18,188	19,466
Total Gross Loans	$ 18,188	$ 19,466

Fair Values of Financial Instru

Fair Values of Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 489,941,021	$ 496,124,574
Obligations of U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	199,552,252	199,966,608
Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	143,565,587	148,264,710
State, County and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	143,837,423	144,922,150
Other Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,985,759	2,971,106
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	486,955,262	493,153,468
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,985,759	2,971,106
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	489,941,021	496,124,574
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	199,552,252	199,966,608
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	143,565,587	148,264,710
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	143,837,423	144,922,150
Fair Value, Measurements, Recurring [Member] | Other Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,985,759	2,971,106
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	486,955,262	493,153,468
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	199,552,252	199,966,608
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	143,565,587	148,264,710
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	143,837,423	144,922,150
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,985,759	2,971,106
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 2,985,759	$ 2,971,106

Fair Values of Financial Inst41

Fair Values of Financial Instruments - Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Beginning Balance	$ 2,971,106	$ 2,915,709
Principal payments received	(4,466)	(15,190)
Unrealized gains included in other comprehensive income	19,119	25,668
Ending Balance	$ 2,985,759	$ 2,926,187

Fair Values of Financial Inst42

Fair Values of Financial Instruments - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gains or losses in earnings attributable to the change in unrealized gains or losses	$ 0	$ 0
Carrying value of an impaired loan	5,985,642	7,064,185
Impaired loans, allowance for loan losses	710,737	786,893
Other Real Estate Owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other real estate owned acquired	11,200	2,187,125
Other real estate owned ("OREO") acquired and sold during period	0
Additional write downs on OREO previously acquired	$ 0	$ 220,419

Fair Values of Financial Inst43

Fair Values of Financial Instruments - Significant Unobservable Inputs (Level 3) used in Valuation of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	$ 2,985,759	$ 2,971,106	$ 2,926,187	$ 2,915,709
Trust Preferred Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	$ 2,985,759
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Valuation Technique	Discounted cash flows
Minimum [Member] | Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Default rate	0.00%
Maximum [Member] | Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Default rate	100.00%

Fair Values of Financial Inst44

Fair Values of Financial Instruments - Asset Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis	$ 3,929,209	$ 5,485,465
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	2,515,509	3,591,516
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	1,413,700	1,893,949
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on non-recurring Basis	3,929,209	5,485,465
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	2,515,509	3,591,516
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	$ 1,413,700	$ 1,893,949

Fair Values of Financial Inst45

Fair Values of Financial Instruments - Significant unobservable inputs (Level 3) used in the valuation of assets and liabilities measured at fair value on a nonrecurring basis (Detail) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 3,929,209	$ 5,485,465
Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 2,515,509	3,591,516
Valuation Technique	Appraised value of collateral less estimated costs to sell
Estimated costs to sell	25.00%
Other Real Estate Owned [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value	$ 1,413,700	$ 1,893,949
Valuation Technique	Appraised value of collateral less estimated costs to sell
Estimated costs to sell	25.00%

Fair Values of Financial Inst46

Fair Values of Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Financial assets
Cash and due from banks	$ 27,706,912	$ 21,688,557
Interest bearing deposits with banks	73,714,719	48,603,182
Securities available-for-sale	489,941,021	496,124,574
Net loans	389,851,680	391,106,337
Financial liabilities
Deposits	789,368,292	760,300,483
Federal Home Loan Bank advances	20,214,525	20,283,999
Securities Sold under Agreement to Repurchase	141,098,287	150,282,913
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets
Cash and due from banks	27,706,912	21,688,557
Interest bearing deposits with banks	73,714,719	48,603,182
Financial liabilities
Deposits	595,106,483	563,440,632
Securities Sold under Agreement to Repurchase	141,098,287	150,282,913
Significant Other Observable Inputs (Level 2) [Member]
Financial assets
Securities available-for-sale	486,955,262	493,153,468
Significant Unobservable Inputs (Level 3) [Member]
Financial assets
Securities available-for-sale	2,985,759	2,971,106
Net loans	389,851,680	391,106,337
Financial liabilities
Deposits	194,261,809	196,859,851
Federal Home Loan Bank advances	20,214,525	20,283,999
Carrying Value [Member]
Financial assets
Cash and due from banks	27,706,912	21,688,557
Interest bearing deposits with banks	73,714,719	48,603,182
Securities available-for-sale	489,941,021	496,124,574
Net loans	389,183,439	390,148,343
Financial liabilities
Deposits	789,214,876	760,152,340
Federal Home Loan Bank advances	20,000,000	20,000,000
Securities Sold under Agreement to Repurchase	$ 141,098,287	$ 150,282,913