Farmers & Merchants Bancorp (FMAO) 10-K 22 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Feb. 22, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	FMAO
Entity Registrant Name	FARMERS & MERCHANTS BANCORP INC
Entity Central Index Key	792,966
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		4,620,875
Entity Public Float			$ 131,027,442

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 27,348	$ 21,333
Federal Funds Sold	974	685
Total cash and cash equivalents	28,322	22,018
Interest-bearing time deposits	1,915
Securities - available for sale	218,527	235,115
Other Securities, at cost	3,717	3,717
Loans, net	753,365	679,821
Premises and equipment	21,457	20,587
Goodwill	4,074	4,074
Mortgage Servicing Rights	2,192	2,056
Other Real Estate Owned	774	1,175
Bank Owned Life Insurance	14,376	14,033
Other assets	7,176	6,472
Total Assets	1,055,895	989,068
Deposits
Noninterest-bearing	186,390	171,112
Interest-bearing
NOW accounts	230,446	190,890
Savings	226,537	225,052
Time	198,830	184,285
Total deposits	842,203	771,339
Federal Funds Purchased and Securities sold under agreement to repurchase	70,324	78,815
Federal Home Loan Bank (FHLB) Advances	10,000	10,000
Dividend payable	1,053	1,007
Accrued expenses and other liabilities	6,738	7,810
Total liabilities	930,318	868,971
Commitments and Contingencies
Stockholders' Equity
Common shares 6,500,000 shares 12/31/15 Common shares 10,000,000 shares 12/31/16 shares; issued & outstanding 5,200,000 shares	11,947	12,086
Treasury Stock - 579,125 shares 2016, 587,466 shares 2015	(12,267)	(12,389)
Retained earnings	127,869	120,188
Accumulated other comprehensive income (loss)	(1,972)	212
Total stockholders' equity	125,577	120,097
Total Liabilities and Stockholders' Equity	$ 1,055,895	$ 989,068

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Common stock, shares authorized	10,000,000	6,500,000
Common stock, shares issued	5,200,000	5,200,000
Common stock, shares outstanding	5,200,000	5,200,000
Treasury Stock, shares	579,125	587,466

Consolidated Statements of Inco

Consolidated Statements of Income & Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Income
Loans, including fees	$ 33,703	$ 29,293	$ 28,070
Debt securities:
U.S. Treasury and government agencies	2,373	2,434	3,171
Municipalities	1,437	1,739	2,037
Dividends	149	148	156
Federal funds sold	22	8	7
Other	43	28	12
Total interest income	37,727	33,650	33,453
Interest Expense
Deposits	3,617	3,269	3,458
Federal funds purchased and securities sold under agreements to repurchase	458	317	254
Borrowed funds	148	1	4
Total interest expense	4,223	3,587	3,716
Net Interest Income - Before provision for loan losses	33,504	30,063	29,737
Provision for Loan Losses	1,121	625	1,191
Net Interest Income After Provision For Loan Losses	32,383	29,438	28,546
Noninterest Income
Customer service fees	6,118	5,847	5,224
Other service charges and fees	3,774	3,790	3,819
Net gain on sale of loans	888	700	647
Net gain on sale of available for sale securities	588	451	494
Total noninterest income	11,368	10,788	10,184
Noninterest Expense
Salaries and Wages	11,620	10,907	10,186
Employee benefits	3,323	3,555	3,324
Net occupancy expense	1,459	1,352	1,107
Furniture and equipment	1,724	1,629	1,541
Data processing	1,409	1,300	1,250
Franchise taxes	878	746	781
Net loss on sale of other assets owned	81	47	157
FDIC Assessment	407	485	503
Mortgage servicing rights amortization	419	374	344
Other general and administrative	6,111	5,672	6,020
Total other operating expenses	27,431	26,067	25,213
Income Before Income Taxes	16,320	14,159	13,517
Income Taxes	4,656	3,819	3,871
Net Income	11,664	10,340	9,646
Other Comprehensive Income (Loss) (Net of Tax):
Net unrealized gain (loss) on available for sale securities	(2,721)	100	1,158
Reclassification adjustment for gain on sale of available for sale securities	(588)	(451)	(494)
Net unrealized gain (loss) on available for sale securities	(3,309)	(351)	664
Tax expense (benefit)	(1,125)	(119)	226
Other comprehensive income (loss)	(2,184)	(232)	438
Comprehensive Income	$ 9,480	$ 10,108	$ 10,084
Earnings Per Share - Basic and Diluted	$ 2.53	$ 2.24	$ 2.08

Consolidated Statements of Chan

Consolidated Statements of Changes to Stockholders Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2013	$ 108,617	$ 12,312	$ (11,611)	$ 107,910	$ 6
Beginning balance, shares at Dec. 31, 2013		4,638,438
Net income	9,646			9,646
Other comprehensive income (loss)	438				438
Purchase of Treasury Stock	(576)		(576)
Purchase of Treasury Stock, shares		(23,570)
Issuance of 13,250, 16,000 and 16,150 shares of restricted stock (Net of Forfeitures - 780, 100 and 773) for the period ended 2014, 2015 and 2016 respectively, and Distribution tax - 19 for the year ended 2016, Amount	(2)	$ (322)	259	61
Issuance of 13,250, 16,000 and 16,150 shares of restricted stock (Net of Forfeitures - 780, 100 and 773) for the period ended 2014, 2015 and 2016 respectively, and Distribution tax - 19 for the year ended 2016, Shares		12,470
Stock-based compensation expense	232	$ 232
Cash dividends declared - 0.84, 0.87 and 0.91 per share for the period ended 2014, 2015 and 2016 respectively	(3,862)			(3,862)
Ending balance at Dec. 31, 2014	114,493	$ 12,222	(11,928)	113,755	444
Ending balance, shares at Dec. 31, 2014		4,627,338
Net income	10,340			10,340
Other comprehensive income (loss)	(232)				(232)
Purchase of Treasury Stock	(803)		(803)
Purchase of Treasury Stock, shares		(30,685)
Issuance of 13,250, 16,000 and 16,150 shares of restricted stock (Net of Forfeitures - 780, 100 and 773) for the period ended 2014, 2015 and 2016 respectively, and Distribution tax - 19 for the year ended 2016, Amount	(30)	$ (450)	342	78
Issuance of 13,250, 16,000 and 16,150 shares of restricted stock (Net of Forfeitures - 780, 100 and 773) for the period ended 2014, 2015 and 2016 respectively, and Distribution tax - 19 for the year ended 2016, Shares		15,881
Stock-based compensation expense	314	$ 314
Cash dividends declared - 0.84, 0.87 and 0.91 per share for the period ended 2014, 2015 and 2016 respectively	(3,985)			(3,985)
Ending balance at Dec. 31, 2015	120,097	$ 12,086	(12,389)	120,188	212
Ending balance, shares at Dec. 31, 2015		4,612,534
Net income	11,664			11,664
Other comprehensive income (loss)	(2,184)				(2,184)
Purchase of Treasury Stock	(194)		(194)
Purchase of Treasury Stock, shares		(7,000)
Issuance of 13,250, 16,000 and 16,150 shares of restricted stock (Net of Forfeitures - 780, 100 and 773) for the period ended 2014, 2015 and 2016 respectively, and Distribution tax - 19 for the year ended 2016, Amount	(47)	$ (541)	316	178
Issuance of 13,250, 16,000 and 16,150 shares of restricted stock (Net of Forfeitures - 780, 100 and 773) for the period ended 2014, 2015 and 2016 respectively, and Distribution tax - 19 for the year ended 2016, Shares		15,341
Stock-based compensation expense	402	$ 402
Cash dividends declared - 0.84, 0.87 and 0.91 per share for the period ended 2014, 2015 and 2016 respectively	(4,161)			(4,161)
Ending balance at Dec. 31, 2016	$ 125,577	$ 11,947	$ (12,267)	$ 127,869	$ (1,972)
Ending balance, shares at Dec. 31, 2016		4,620,875

Consolidated Statements of Cha6

Consolidated Statements of Changes to Stockholders Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Issuance of shares of restricted stock, Shares	16,150	16,000	13,250
Cash dividends declared, per share	$ 0.91	$ 0.87	$ 0.84
Common Stock [Member]
Issuance of shares of restricted stock, Shares	16,150	16,000	13,250
Issuance of shares of restricted stock, forfeitures	773	100	780
Issuance of shares of restricted stock, Repurchases	36	19

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flows from Operating Activities
Net income	$ 11,664	$ 10,340	$ 9,646
Adjustments to reconcile net income to net cash from operating activities:
Depreciation	1,464	1,365	1,293
Amortization of available for sale securities, net	1,146	1,239	1,430
Amortization of servicing rights	419	374	344
Amortization of core deposit intangible	323	323	480
Compensation expense related to stock awards	402	314	232
Provision for loan loss	1,121	625	1,191
Gain on sale of loans held for sale	(888)	(700)	(647)
Originations of loans held for sale	(66,014)	(52,706)	(37,432)
Proceeds from sale of loans held for sale	63,988	52,764	41,992
Loss on sale of other assets owned	81	47	157
Gain on sales of available for sale securities	(588)	(451)	(494)
Change in other assets and other liabilities, net	(688)	1,275	971
Net Cash Provided by Operating Activities	12,430	14,809	19,163
Activity in securities:
Maturities, prepayments and calls	41,825	26,059	17,817
Sales	85,723	47,029	57,928
Purchases	(114,819)	(60,925)
Change in interest-bearing time deposits	(1,915)
Proceeds from redemption of FHLB stock			499
Proceeds from sales of other assets owned	41	64	24
Additions to premises and equipment	(2,406)	(1,716)	(2,908)
Loan originations and principal collections, net	(72,639)	(64,483)	(50,853)
Net cash provided by (used in) investing activities	(64,190)	(53,972)	22,507
Cash Flows from Financing Activities
Net change in deposits	70,864	8,779	(13,904)
Net change in federal funds purchased and securities sold under agreements to repurchase	(8,491)	22,853	(13,794)
Proceeds of FHLB advances		10,000
Repayment of FHLB advances			(4,500)
Purchase of Treasury Stock	(194)	(803)	(576)
Cash dividends paid on common stock	(4,115)	(3,943)	(3,864)
Net cash provided by (used) financing activities	58,064	36,886	(36,638)
Net Increase (Decrease) in Cash and Cash Equivalents	6,304	(2,277)	5,032
Cash and Cash Equivalents - Beginning of Year	22,018	24,295	19,263
Cash and Cash Equivalents - End of Year	28,322	22,018	24,295
Cash paid during the year for:
Interest	4,151	3,610	3,732
Income taxes	5,012	3,079	4,285
Noncash investing activities:
Transfer of loans to other real estate owned	$ 419	$ 231	$ 139

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1 - Summary of Significant Accounting Policies Nature of Operations The Farmers & Merchants Bancorp, Inc. (the Company) through its bank subsidiary, The Farmers & Merchants State Bank (the Bank) provides a variety of financial services to individuals and small businesses through its offices in Northwest Ohio and Northeast Indiana. Consolidation Policy The consolidated financial statements include the accounts of Farmers & Merchants Bancorp, Inc. and its wholly-owned subsidiaries, The Farmers & Merchants State Bank (the Bank), a commercial banking institution and Farmers & Merchants Risk Management, Inc. (the Captive), a Captive insurance company. All significant inter-company balances and transactions have been eliminated. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses and the valuation of mortgage servicing rights, goodwill, available for sale investment securities, other real estate owned and impaired loans. Actual results could differ from those estimates. The determination of the adequacy of the allowance for loan losses is based on estimates that are particularly susceptible to significant changes in the economic environment and market conditions. In connection with the determination of the estimated losses on loans, management obtains independent appraisals for significant collateral. The Bank’s loans are generally secured by specific items of collateral including real property, consumer assets, and business assets. Although the Bank has a diversified loan portfolio, a substantial portion of its debtors’ ability to honor their contracts is dependent on local economic conditions in the agricultural industry. While management uses available information to recognize losses on loans, further reductions in the carrying amounts of loans may be necessary based on changes in local economic conditions. In addition regulatory agencies, as an integral part of their examination process, periodically review the estimated losses on loans. Such agencies may require the Bank to recognize additional losses based on their judgments about information available to them at the time of their examination. Because of these factors, it is reasonably possible that the estimated losses on loans may change materially in the near term. However, the amount of the change that is reasonably possible cannot be estimated. Cash and Cash Equivalents For purposes of the consolidated statement of cash flows, the Company considers all highly liquid debt instruments purchased with an original maturity of three months or less to be cash equivalents. This includes cash on hand, amounts due from banks, and federal funds sold. Generally, federal funds are purchased for one day periods. Restrictions on Cash and Amounts Due from Banks The Bank is required to maintain average balances on hand with the Federal Reserve Bank. The aggregate reserve was $5.0 million for December 31, 2016 and it was $6.5 million for December 31, 2015. The Company and its subsidiaries maintain cash balances with high quality credit institutions. At times such balances may be in excess of the federally insured limits. Securities Debt securities are classified as available-for-sale. available-for-sale Declines in the fair value of securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In estimating other-than-temporary impairment losses, management considers (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. The related write-downs are included in earnings as realized losses. Other Securities Other Securities consists of Federal Home Loan Bank of Cincinnati stock and Farmer Mac stock. These stocks are carried at cost and are held to enable the Bank to conduct business with the entities. The Federal Home Loan Bank sells and purchases their stock at par. The Federal Home Loan Bank of Cincinnati stock is held as collateral security for all indebtedness of the Bank to the Federal Home Loan Bank. The Federal Home Loan Bank of Cincinnati is evaluated for impairment as conditions warrant. Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off Generally, a loan is classified as nonaccrual and the accrual of interest income is generally discontinued when a loan becomes ninety days past due as to principal or interest and these loans are placed on a “cash basis” for purposes of income recognition. Management may elect to continue the accrual of interest when the estimated net realizable value of collateral is sufficient to cover the principal and accrued interest, and the loan is in the process of collection. When a loan is placed on nonaccrual status, all previously accrued and unpaid interest receivable is charged against income. Loan origination and commitment fees and certain direct loan origination costs are deferred and amortized as a net adjustment to the related loan’s yield. The Bank is generally amortizing these costs over the contractual life of such loans. Allowance for Loan Losses The allowance for loan losses is established through a provision for loan losses charged to income. Loans deemed to be uncollectable and changes in the allowance relating to loans are charged against the allowance for loan losses, and subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a regular basis by management and is based on management’s periodic review of the collectability of the loans in light of historical experiences, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are subject to revision as more information becomes available. The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as doubtful, substandard or special mention. For such loans that are also classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component covers non-classified A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case At 90 days delinquent, secured consumer loans are charged down to the value of the collateral, if repossession of the collateral is assured and/or in the process of repossession. Consumer mortgage loan deficiencies are charged down upon the sale of the collateral or sooner upon the recognition of collateral deficiency. For the majority of the Bank’s impaired loans, the Bank will apply the fair value of collateral or use a measurement incorporating the present value of expected future cash flows discounted at the loan’s effective rate of interest. To determine fair value of collateral, collateral asset values securing an impaired loan are periodically evaluated. Maximum time of re-evaluation Large groups of homogeneous loans are collectively evaluated for impairment. Accordingly, the Bank does not separately identify individual consumer loans for impairment, unless such loans are the subject of a restructuring agreement due to financial difficulties of the borrower. For more information regarding the actual composition and classification of loans involved in the establishment of the allowance for loan loss, please see Note 4 provided here with the notes to consolidated financial statements. Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate. Net unrealized losses, if any, are recognized in a valuation allowance by charges to income. Servicing Assets Servicing assets are recognized as separate assets when rights are acquired through purchase or sale of financial assets. Capitalized servicing rights are reported in other assets and are amortized into noninterest expense in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets. Servicing assets are evaluated for impairment based upon the fair value of the rights as compared to amortized cost. Impairment is determined by stratifying rights by predominant characteristics, such as interest rates and terms. Fair value is determined using prices for similar assets with similar characteristics, when available, or based upon discounted cash flows using market based assumptions. Impairment is recognized through a valuation allowance for an individual stratum, to the extent that fair value is less than the capitalized amount for the stratum. Fees received for servicing loans owned by investors are based on a percentage of the outstanding monthly principal balance of such loans and are included in operating income as loan payments are received. Costs of servicing loans are charged to expense as incurred. Goodwill and Other Intangible Assets Goodwill results from business acquisitions and represents the excess of the purchase price over the fair value of acquired tangible assets and liabilities and identifiable intangible assets. Goodwill is assessed at least annually. If possible impairment is likely, the Bank will utilize the assistance of an independent third party for impairment and any such impairment is recognized in the period identified. The Bank considered the following qualitative factors to determine if impairment was likely: 1) the Bank continued to perform above peer and remains profitable with capital remaining strong, 2) the Bank had improved asset quality and does not see any change in the trend, 3) the Bank had strong liquidity and capital positions, 4) in quantitative testing done in 2016, the excess fair value of capital was $11.3 million or 10.4% over the carrying value and was over two and a half times the value of the goodwill being carried and 5) the Bank was unaware of any likely circumstances that would indicate the fair value of the entity would be greatly decreased in the near future. Therefore, the Bank concluded it is unlikely impairment of Goodwill has occurred from the goodwill established from the Bank’s acquisition which occurred on December 31, 2007. Other intangible assets consist of core deposit intangible assets arising from business acquisitions. They are initially measured at fair value and then are amortized on a straight line method over their estimated useful lives and evaluated for impairment. Off Balance Sheet Instruments In the ordinary course of business, the Bank has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit and standby letters of credit. Such financial instruments are recorded when they are funded. Foreclosed Real Estate Foreclosed real estate held for sale is carried at the lower of fair value minus estimated costs to sell, or cost. Costs of holding foreclosed real estate are charged to expense in the current period, except for significant property improvements, which are capitalized. Valuations are periodically performed by management and an allowance is established by a charge to non-interest non-interest Bank Premises and Equipment Land is carried at cost. Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is based on the estimated useful lives of the various properties and is computed using straight line and accelerated methods. Costs for maintenance and repairs are charged to operations as incurred. Gains and losses on dispositions are included in current operations. Federal Income Tax The Company’s income tax expense consists of the following components: current and deferred. Current income tax expense reflects taxes to be paid or refunded for the current period by applying the provisions of the enacted tax law to the taxable income or excess of deductions over revenues. The Company determines deferred income taxes using the liability (or balance sheet) method. Under this method, the net deferred tax asset or liability is based on the tax effects of the differences between the book and tax bases of assets and liabilities, and enacted changes in tax rates and laws are recognized in the period in which they occur. Deferred income tax expense results from changes in deferred tax assets and liabilities between periods. Deferred tax assets are recognized if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more likely than not means a likelihood of more than 50 percent; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more-likely-than-not more-likely-than-not The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in tax expense. Based on management’s analysis, the Company did not have any uncertain tax positions as of December 31, 2016 and 2015. With a few exceptions, the Company is no longer subject to U.S. Federal, state or local examinations by tax authorities for years before 2013. Earnings Per Share Basic earnings per share represent income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. See Note 12 for additional information. Stock-Based Compensation The fair value of restricted common stock is their fair market value on the date of grant. The fair value of restricted stock is amortized as compensation expense on a straight-line basis over the vesting period of the grants. Compensation expense recognized is included in personnel expense in the consolidated statement of income. Treasury Stock Common stock shares repurchased are recorded at market value on date of purchase. Other Comprehensive Income (Loss) Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale The components of other comprehensive income (loss) and related tax effects are as follows: (In Thousands) 2016 2015 2014 Net unrealized gain (loss) on available-for-sale $ (2,721 ) $ 100 $ 1,158 Reclassification adjustment for gain on sale of available-for-sale (588 ) (451 ) (494 ) Net unrealized gains (losses) (3,309 ) (351 ) 664 Tax expense (benefit) (1,125 ) (119 ) 226 Other comprehensive income (loss) $ (2,184 ) $ (232 ) $ 438 Reclassification Certain amounts in the 2015 and 2014 consolidated financial statements have been reclassified to conform with the 2016 presentation. These reclassifications had no effect on net income. Subsequent Events On January 20, 2017, the Company announced the authorization by its Board of Directors for the Company’s repurchase, either on the open market, or in privately negotiated transactions, of up to 200,000 shares of its outstanding common stock commencing January 20, 2017 and ending December 31, 2017. Recent Accounting Pronouncements In January 2016, the FASB issued ASU No. 2016-01 Financial Instruments - Overall (Subtopic 825-10) 2016-01 2016-01 2016-01 In February 2016, the FASB issued ASU No. 2016-02 Leases (Topic 842).” 2016-02 2016-02 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 In June 2016, FASB issued 2016-13, available-for-sale The ASU is effective for SEC filers for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 (i.e., January 1, 2020, for calendar year entities). Early application will be permitted for all organizations for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is currently gathering information, reviewing possible vendors and has formed a committee to formulate the methodology to be used. Most importantly, the Company is gathering as much data as possible to enable review scenarios and determine which calculations will produce the most reliable results.

Business Combination & Asset Pu

Business Combination & Asset Purchase	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Business Combination & Asset Purchase	Note 2 – Business Combination & Asset Purchase The Company recognized core deposit intangible assets of $2.26 million with the purchase of offices. $1.17 million was recognized with the purchase of the Custar office on December 13, 2013 and $1.09 million with the Hicksville office on July 9, 2010. These are being amortized over an estimated remaining economic useful life of the deposits of 7 years on a straight line basis. In connection with a December 31, 2007 Knisely acquisition, the Company recognized a core deposit intangible asset of $1.1 million, which was fully amortized during 2014. The core deposit intangible is included in other assets on the consolidated balance sheets. The amortization expense for the years ended December 31, 2016, 2015 and 2014 was $323, $323, and $480 thousand, respectively. Amortization expense of the core deposit intangible assets remaining is as follows: Hicksville Custar Total 2017 $ 78 $ 167 $ 245 2018 0 167 167 2019 0 167 167 2020 0 161 161 Total $ 78 $ 662 $ 740

Securities

Securities	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Securities	Note 3 - Securities The amortized cost and fair value of securities, with gross unrealized gains and losses, follows: (In Thousands) 2016 Gross Gross Estimated Amortized Unrealized Unrealized Market Cost Gains Losses Value Available-for-Sale: U.S. Treasury $ 24,920 $ 1 $ (146 ) $ 24,775 U.S. Government agencies 84,266 3 (1,795 ) 82,474 Mortgage-backed securities 49,155 185 (879 ) 48,461 State and local governments 63,173 634 (990 ) 62,817 Total available-for-sale $ 221,514 $ 823 $ (3,810 ) $ 218,527 (In Thousands) 2015 Gross Gross Estimated Amortized Unrealized Unrealized Market Cost Gains Losses Value Available-for-Sale: U.S. Treasury $ 38,778 $ 36 $ (309 ) $ 38,505 U.S. Government agencies 99,000 55 (835 ) 98,220 Mortgage-backed securities 26,157 283 (116 ) 26,324 State and local governments 70,858 1,290 (82 ) 72,066 Total available-for-sale $ 234,793 $ 1,664 $ (1,342 ) $ 235,115 Investment securities will at times depreciate to an unrealized loss position. The Bank utilizes the following criteria to assess whether impairment is other than temporary. No one item by itself will necessarily signal that a security should be recognized as an other than temporary impairment. 1. The fair value of the security has significantly declined from book value. 2. A downgrade has occurred that lowered the credit rating to below investment grade (below Baa3 by Moody and BBB – by Standard and Poors.) 3. Dividends have been reduced or eliminated or scheduled interest payments have not been made. 4. The underwater security has longer than 10 years to maturity and the loss position had existed for more than 3 years. 5. Management does not possess both the intent and ability to hold the security for a period of time sufficient to allow for any anticipated recovery in fair value. If the impairment is judged to be other than temporary, the cost basis of the individual security shall be written down to fair value, thereby establishing a new cost basis. The new cost basis shall not be changed for subsequent recoveries in fair value. The amount of the write down shall be included in current earnings as a realized loss. The recovery in fair value, if any, shall be recognized in earnings when the security is sold. The table below is presented by category of security and length of time in a continuous loss position. The Bank currently does not hold any securities with other than temporary impairment. Information pertaining to securities with gross unrealized losses at December 31, 2016 and 2015, aggregated by investment category and length of time that individual securities have been in a continuous loss position follows: 2016 (In Thousands) (In Thousands) Gross Fair Gross Fair U.S. Treasury $ (146 ) $ 15,745 $ — $ — U.S. Government agencies (1,795 ) 77,471 — — Mortgage-backed securities (879 ) 36,474 — — State and local governments (983 ) 37,540 (7 ) 526 Total available-for-sales $ (3,803 ) $ 167,230 $ (7 ) $ 526 2015 (In Thousands) (In Thousands) Gross Fair Gross Fair U.S. Treasury $ (142 ) $ 23,241 $ (167 ) $ 10,195 U.S. Government agencies (635 ) 68,957 (200 ) 9,793 Mortgage-backed securities (60 ) 6,331 (56 ) 3,580 State and local governments (54 ) 7,920 (28 ) 1,725 Total available-for-sales $ (891 ) $ 106,449 $ (451 ) $ 25,293 Unrealized losses on securities have not been recognized into income because the issuers’ bonds are of high credit quality, values have only been impacted by rate changes, and the Company has the intent and ability to hold the securities for the foreseeable future. The fair value is expected to recover as the bonds approach the maturity date. Sales of $85.7, $47.0, and $57.9 million for 2016, 2015, and 2014 respectively, generated gross realized gains and losses for the years ended December 31, as presented below: (In Thousands) 2016 2015 2014 Gross realized gains $ 598 $ 451 $ 638 Gross realized losses (10 ) — (144 ) Net realized gains $ 588 $ 451 $ 494 Tax expense related to net realized gains $ 200 $ 153 $ 168 The net realized gain on sales and related tax expense is a reclassification out of accumulated other comprehensive income. The net realized gain is included in net gain on sale of securities available-for-sale The amortized cost and fair value of debt securities at December 31, 2016, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. (In Thousands) Amortized Cost Fair Value One year or less $ 19,158 $ 19,231 After one year through five years 81,888 81,590 After five years through ten years 67,483 65,583 After ten years 3,830 3,662 Total $ 172,359 $ 170,066 Mortgage-backed securities 49,155 48,461 Total $ 221,514 $ 218,527 Investments with a carrying value and fair value of $129.4 million at December 31, 2016 and $189.3 million at December 31, 2015 were pledged to secure public deposits and securities sold under repurchase agreements. Other securities include Federal Home Loan Bank of Cincinnati and Farmer Mac stock as of December 31, 2016 and 2015.

Loans

Loans	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loans	Note 4 - Loans The Company had $2.1 million in loans held for sale at December 31, 2016 as compared to $1.2 million in loans held for sale at December 31, 2015. Due to materiality, these loans are included in the Consumer Real Estate and Agricultural Real Estate loan categories at the lower of cost or market. Loans (In Thousands) 2016 2015 Loans: Consumer Real Estate $ 87,273 $ 88,189 Agricultural Real Estate 63,391 58,525 Agricultural 84,563 82,654 Commercial Real Estate 377,481 322,762 Commercial and Industrial 109,256 100,125 Consumer 33,179 27,770 Industrial Development Bonds 5,732 6,491 $ 760,875 $ 686,516 Less: Net deferred loan fees and costs (726 ) (638 ) 760,149 685,878 Less: Allowance for loan losses (6,784 ) (6,057 ) Loans - Net $ 753,365 $ 679,821 Following are the characteristics and underwriting criteria for each major type of loan the Bank offers: Commercial Real Estate: Construction, purchase, and refinance of business purpose real estate. Risks include potential construction delays and overruns, vacancies, collateral value subject to market value fluctuations, interest rate, market demands, borrower’s ability to repay in orderly fashion, and others. The Bank does employ stress testing on higher balance loans to mitigate risk by ensuring the customer’s ability to repay in a changing rate environment before granting loan approval. Agricultural Real Estate: Purchase of farm real estate or for permanent improvements to the farm real estate. Cash flow from the farm operation is the repayment source and is therefore subject to the financial success of the farm operation. Consumer Real Estate: Purchase, refinance, or equity financing of one to four family owner occupied dwelling. Success in repayment is subject to borrower’s income, debt level, character in fulfilling payment obligations, employment, and others. Commercial and Industrial: Loans to proprietorships, partnerships, or corporations to provide temporary working capital and seasonal loans as well as long term loans for capital asset acquisition. Risks include adequacy of cash flow, reasonableness of profit projections, financial leverage, economic trends, management ability, and others. The Bank does employ stress testing on higher balance loans to mitigate risk by ensuring the customer’s ability to repay in a changing rate environment before granting loan approval. Agricultural: Loans for the production and housing of crops, fruits, vegetables, and livestock or to fund the purchase or re-finance Consumer: Funding for individual and family purposes. Success in repayment is subject to borrower’s income, debt level, character in fulfilling payment obligations, employment, and others. Industrial Development Bonds (IDB): Funds for public improvements in the Bank’s service area. Repayment ability is based on the continuance of the taxation revenue as the source of repayment. The following is a maturity schedule by major category of loans at December 31, 2016: (In Thousands) Within After One After Total Consumer Real Estate $ 2,900 $ 12,258 $ 72,115 $ 87,273 Agricultural Real Estate 911 3,156 59,324 63,391 Agricultural 51,411 22,771 10,381 84,563 Commercial Real Estate 7,636 105,377 264,468 377,481 Commercial and Industrial 49,757 35,400 24,099 109,256 Consumer 5,880 20,212 7,087 33,179 Industrial Development Bonds 1,031 85 4,616 5,732 $ 119,526 $ 199,259 $ 442,090 $ 760,875 The distribution of fixed rate loans and variable rate loans by major loan category is as follows as of December 31, 2016: (In Thousands) Fixed Variable Consumer Real Estate $ 50,138 $ 37,135 Agricultural Real Estate 47,109 16,282 Agricultural 41,821 42,742 Commercial Real Estate 257,805 119,676 Commercial and Industrial 52,616 56,640 Consumer 28,544 4,635 Industrial Development Bonds 5,732 — As of December 31, 2016 and 2015 one to four family residential mortgage loans amounting to $17.9 million and $20.0 million, respectively, have been pledged as security for loans the Bank has received from the Federal Home Loan Bank. Industrial Development Bonds are included in the commercial and industrial category for the remainder of the tables in this Note 4, unless specifically noted separately. The following table represents the contractual aging of the recorded investment in past due loans by portfolio classification of loans as of December 31, 2016 and 2015, net of deferred loan fees and costs: December 31, 2016 30-59 Days 60-89 Days Greater Than Total Current Total Recorded Consumer Real Estate $ 882 $ 15 $ 507 $ 1,404 $ 85,508 $ 86,912 $ — Agricultural Real Estate 12 — 132 144 63,208 63,352 — Agricultural 101 — — 101 84,591 84,692 — Commercial Real Estate 60 — — 60 376,827 376,887 — Commercial and Industrial — — — — 115,093 115,093 — Consumer 29 6 — 35 33,178 33,213 — Total $ 1,084 $ 21 $ 639 $ 1,744 $ 758,405 $ 760,149 $ — December 31, 2015 30-59 Days 60-89 Days Greater Than Total Past Current Total Recorded Consumer Real Estate $ 303 $ 47 $ 357 $ 707 $ 87,240 $ 87,947 $ — Agricultural Real Estate — — 162 162 58,301 58,463 — Agricultural — 145 — 145 82,617 82,762 — Commercial Real Estate 236 — 841 1,077 321,153 322,230 — Commercial and Industrial 51 — 20 71 106,618 106,689 — Consumer 19 9 — 28 27,759 27,787 — Total $ 609 $ 201 $ 1,380 $ 2,190 $ 683,688 $ 685,878 $ — The following table presents the recorded investment in nonaccrual loans by portfolio class of loans as of December 31, 2016 and December 31, 2015: (In Thousands) 2016 2015 Consumer Real Estate $ 1,091 $ 1,155 Agricultural Real Estate 132 162 Agriculture — — Commercial Real Estate — 484 Commercial and Industrial 161 202 Consumer — 38 Total $ 1,384 $ 2,041 The Bank uses a nine tier risk rating system to grade its loans. The grade of a loan may change during the life of the loan. The risk ratings are described as follows. 1. Zero (0) Unclassified. Any loan which has not been assigned a classification. 2. One (1) Excellent. Credit to premier customers having the highest credit rating based on an extremely strong financial condition, which compares favorably with industry standards (upper quartile of The Risk Management Association ratios). Financial statements indicate a sound earnings and financial ratio trend for several years with satisfactory profit margins and excellent liquidity exhibited. Prime credits may also be borrowers with loans fully secured by highly liquid collateral such as traded stocks, bonds, certificates of deposit, savings account, etc. No credit or collateral exceptions exist and the loan adheres to the Bank’s loan policy in every respect. Financing alternatives would be readily available and would qualify for unsecured credit. This grade is summarized by high liquidity, minimum risk, strong ratios, and low handling costs. 3. Two (2) Good. Desirable loans of somewhat less stature than Grade 1, but with strong financial statements. Loan supported by financial statements containing strong balance sheets, generally with a leverage position less than 1.50, and a history of profitability. Probability of serious financial deterioration is unlikely. Possessing a sound repayment source (and a secondary source), which would allow repayment in a reasonable period of time. Individual loans backed by liquid personal assets, established history and unquestionable character. 4. Three (3) Satisfactory. Satisfactory loans of average or slightly above average risk – having some deficiency or vulnerability to changing economic conditions, but still fully collectible. Projects should normally demonstrate acceptable debt service coverage. Generally, customers should have a leverage position less than 2.00. May be some weakness but with offsetting features of other support readily available. Loans are meeting the terms of repayment. Loans may be graded 3 when there is no recent information on which to base a current risk evaluation and the following conditions apply: At inception, the loan was properly underwritten and did not possess an unwarranted level of credit risk; a. At inception, the loan was secured with collateral possessing a loan value adequate to protect the Bank from loss; b. The loan exhibited two or more years of satisfactory repayment with a reasonable reduction of the principal balance; c. During the period that the loan has been outstanding, there has been no evidence of any credit weakness. Some examples of weakness include slow payment, lack of cooperation by the borrower, breach of loan covenants, or the business is in an industry which is known to be experiencing problems. If any of the credit weaknesses is observed, a lower risk grade is warranted. 5. Four (4) Satisfactory / Monitored. A “4” (Satisfactory/Monitored) risk grade may be established for a loan considered satisfactory but which is of average credit risk due to financial weakness or uncertainty. The loans warrant a higher than average level of monitoring to ensure that weaknesses do not advance. The level of risk in Satisfactory/Monitored classification is considered acceptable and within normal underwriting guidelines, so long as the loan is given management supervision. 6. Five (5) Special Mention. Loans that possess some credit deficiency or potential weakness which deserves close attention, but which do not yet warrant substandard classification. Such loans pose unwarranted financial risk that, if not corrected, could weaken the loan and increase risk in the future. The key distinctions of a 5 (Special Mention) classification are that (1) it is indicative of an unwarranted level of risk, and (2) weaknesses are considered “potential”, versus “defined”, impairments to the primary source of loan repayment and collateral. 7. Six (6) Substandard. One or more of the following characteristics may be exhibited in loans classified substandard: a. Loans, which possess a defined credit weakness and the likelihood that a loan will be paid from the primary source, are uncertain. Financial deterioration is underway and very close attention is warranted to ensure that the loan is collected without loss. b. Loans are inadequately protected by the current net worth and paying capacity of the borrower. c. The primary source of repayment is weakened, and the Bank is forced to rely on a secondary source of repayment such as collateral liquidation or guarantees. d. Loans are characterized by the distinct possibility that the Bank will sustain some loss if deficiencies are not corrected. e. Unusual courses of action are needed to maintain a high probability of repayment. f. The borrower is not generating enough cash flow to repay loan principal; however, continues to make interest payments. g. The lender is forced into a subordinate position or unsecured collateral position due to flaws in documentation. h. Loans have been restructured so that payment schedules, terms and collateral represent concessions to the borrower when compared to the normal loan terms. i. The lender is seriously contemplating foreclosure or legal action due to the apparent deterioration in the loan j. There is significant deterioration in the market conditions and the borrower is highly vulnerable to these conditions. 8. Seven (7) Doubtful. One or more of the following characteristics may be exhibited in loans classified Doubtful: a. Loans have all of the weaknesses of those classified as Substandard. Additionally, however, these weaknesses make collection or liquidation in full based on existing conditions improbable. b. The primary source of repayment is gone, and there is considerable doubt as to the quality of the secondary source of repayment. c. The possibility of loss is high, but, because of certain important pending factors which may strengthen the loan, loss classification is deferred until its exact status is known. A Doubtful classification is established deferring the realization of the loss. 9. Eight (8) Loss. Loans are considered uncollectable and of such little value that continuing to carry them as assets on the institution’s financial statements is not feasible. Loans will be classified Loss when it is neither practical nor desirable to defer writing off or reserving all or a portion of a basically worthless asset, even though partial recovery may be possible at some time in the future. The following table represents the risk category of loans by portfolio class, net of deferred fees, based on the most recent analysis performed as of the time periods shown of December 31, 2016 and December 31, 2015. (In Thousands) Agricultural Real Estate Agricultural Commercial Real Estate Commercial and Industrial Development 2016 2015 2016 2015 2016 2015 2016 2015 2016 2015 1-2 $ 4,999 $ 5,841 $ 7,334 $ 12,025 $ 677 $ 597 $ 10,060 $ 261 $ — $ — 3 16,660 16,593 31,397 21,247 27,858 24,264 14,064 22,300 2,640 3,100 4 40,224 35,475 44,560 49,220 333,523 293,381 83,100 76,855 3,092 3,391 5 1,209 192 1,234 250 8,321 1,738 1,379 57 — — 6 260 362 167 — 6,508 1,828 641 543 — — 7 — — — 20 — 422 117 182 — — 8 — — — — — — — — — — Total $ 63,352 $ 58,463 $ 84,692 $ 82,762 $ 376,887 $ 322,230 $ 109,361 $ 100,198 $ 5,732 $ 6,491 For consumer residential real estate, and other, the Company also evaluates credit quality based on the aging status of the loan, which was previously stated, and by payment activity. The following tables present the recorded investment in those classes based on payment activity and assigned risk grading as of December 31, 2016 and December 31, 2015. (In Thousands) Consumer Real Estate 2016 2015 Grade Pass $ 86,361 $ 87,292 Special mention (5) 25 48 Substandard (6) 368 332 Doubtful (7) 158 275 Total $ 86,912 $ 87,947 Consumer - Credit Card Consumer - Other 2016 2015 2016 2015 Performing $ 4,061 $ 3,901 $ 29,120 $ 23,863 Nonperforming — — 32 23 Total, net of deferred fees $ 4,061 $ 3,901 $ 29,152 $ 23,886 Information about impaired loans as of and for the years ended December 31, 2016 and 2015 are as follows: (In Thousands) 2016 2015 Impaired loans without a valuation allowance $ 1,141 $ 1,257 Impaired loans with a valuation allowance 711 879 Total impaired loans $ 1,852 $ 2,136 Valuation allowance related to impaired loans $ 135 $ 330 Total non-accrual $ 1,384 $ 2,041 Total loans past-due $ — $ — (In Thousands) 2016 2015 2014 Average investment in impaired loans $ 1,802 $ 2,509 $ 1,929 Interest income recognized on impaired loans $ 64 $ 96 $ 87 Interest income recognized on a cash basis on impaired loans $ 27 $ 60 $ 51 No additional funds are committed to be advanced in connection with impaired loans. The Bank had approximately $0.7 million of its impaired loans classified as trouble debt restructured as of December 31, 2016 as compared to $1.1 million of its impaired loans classified as trouble debt restructured as of December 31, 2015. The following table represents the years ended December 31, 2016 and 2015. December 31, 2016 Troubled Debt Restructurings Number of Pre- Post- December 31, 2015 Number of Pre- Post- Commercial Real Estate 1 $ 138 $ 138 Commercial Real Estate 1 $ 528 $ 430 Commercial and Industrial 0 — — Commercial and Industrial 1 25 24 For the years ended December 31, 2016 and 2015, there was one TDR from 2015 that subsequently defaulted after modification during 2016 at a loss of $79.6 thousand. For the majority of the Bank’s impaired loans, the Bank will apply the observable market price methodology. However, the Bank may also utilize a measurement incorporating the present value of expected future cash flows discounted at the loan’s effective rate of interest. To determine observable market price, collateral asset values securing an impaired loan are periodically evaluated. Maximum time of re-evaluation The Bank uses the following guidelines as stated in policy to determine when to realize a charge-off, work-out charge-off The following tables present loans individually evaluated for impairment by portfolio class of loans as of December 31, 2016 and 2015: (In Thousands) Recorded Unpaid Related Average Interest Interest 2016 With no related allowance recorded: Consumer Real Estate $ 1,009 $ 1,009 $ — $ 101 $ 16 $ 4 Agricultural Real Estate 132 132 — 147 — — Agricultural — — — — — — Commercial Real Estate — — — 427 24 23 Commercial and Industrial — — — 337 — — Consumer — — — — — — With a specific allowance recorded: Consumer Real Estate 94 94 34 344 — — Agricultural Real Estate — — — 9 — — Agricultural — — — — — — Commercial Real Estate 501 501 66 191 — — Commercial and Industrial 116 116 35 246 24 — Consumer — — — — — — Totals: Consumer Real Estate $ 1,103 $ 1,103 $ 34 $ 445 $ 16 $ 4 Agricultural Real Estate $ 132 $ 132 $ — $ 156 $ — $ — Agricultural $ — $ — $ — $ — $ — $ — Commercial Real Estate $ 501 $ 501 $ 66 $ 618 $ 24 $ 23 Commercial and Industrial $ 116 $ 116 $ 35 $ 583 $ 24 $ — Consumer $ — $ — $ — $ — $ — $ — (In Thousands) Recorded Unpaid Related Average Interest Interest 2015 With no related allowance recorded: Consumer Real Estate $ 156 $ 156 $ — $ 158 $ 5 $ 5 Agricultural Real Estate 63 63 — 120 — — Agricultural — — — — — — Commercial Real Estate 1,038 1,038 — 421 27 27 Commercial and Industrial — — — 429 27 — Consumer — — — — — — With a specific allowance recorded: Consumer Real Estate 275 323 64 181 7 6 Agricultural Real Estate — — — — — — Agricultural — — — — — — Commercial Real Estate 422 422 152 907 30 22 Commercial and Industrial 182 182 114 291 — — Consumer — — — 2 — — Totals: Consumer Real Estate $ 431 $ 479 $ 64 $ 339 $ 12 $ 11 Agricultural Real Estate $ 63 $ 63 $ — $ 120 $ — $ — Agricultural $ — $ — $ — $ — $ — $ — Commercial Real Estate $ 1,460 $ 1,460 $ 152 $ 1,328 $ 57 $ 49 Commercial and Industrial $ 182 $ 182 $ 114 $ 720 $ 27 $ — Consumer $ — $ — $ — $ 2 $ — $ — On January 1, 2015, the Company adopted Accounting Standards Update (ASU) 2014-04, The ALLL has a direct impact on the provision expense. An increase in the ALLL is funded through recoveries and provision expense. The following tables summarize the activities in the allowance for credit losses. The following is an analysis of the allowance for credit losses for the years ended December 31: (In Thousands) 2016 2015 2014 Allowance for Loan Losses Balance at beginning of year $ 6,057 $ 5,905 $ 5,194 Provision for loan loss 1,121 625 1,191 Loans charged off (550 ) (1,030 ) (778 ) Recoveries 156 557 298 Balance at ending of year $ 6,784 $ 6,057 $ 5,905 Allowance for Unfunded Loan Commitments & Letters of Credit $ 217 $ 208 $ 207 Total Allowance for Credit Losses $ 7,001 $ 6,265 $ 6,112 The Company segregates its Allowance for Loan and Lease Losses (ALLL) into two reserves: The ALLL and the Allowance for Unfunded Loan Commitments and Letters of Credit (AULC). When combined, these reserves constitute the total Allowance for Credit Losses (ACL). The AULC is reported within other liabilities on the balance sheet while the ALLL is netted within the loans, net asset line. The ACL presented above represents the full amount of reserves available to absorb possible credit losses. The following table breaks down the activity within ALLL for each loan portfolio segment and shows the contribution provided by both the recoveries and the provision along with the reduction of the allowance caused by charge-offs. Additional analysis related to the allowance for credit losses as of December 31, 2016 and 2015 is as follows: (In Thousands) Consumer Agricultural Agricultural Commercial Commercial Consumer Unfunded Unallocated Total 2016 ALLOWANCE FOR CREDIT LOSSES: Beginning balance $ 338 $ 211 $ 582 $ 2,516 $ 1,229 $ 337 $ 208 $ 844 $ 6,265 Charge Offs (106 ) — (21 ) (93 ) (20 ) (310 ) — — (550 ) Recoveries 28 — 10 20 11 87 — — 156 Provision (Credit) 56 30 45 807 98 280 — (195 ) 1,121 Other Non-interest — — — — — — 9 — 9 Ending Balance $ 316 $ 241 $ 616 $ 3,250 $ 1,318 $ 394 $ 217 $ 649 $ 7,001 Ending balance: individually evaluated for impairment $ 34 $ — $ — $ 66 $ 35 $ — $ — $ — $ 135 Ending balance: collectively evaluated for impairment $ 282 $ 241 $ 616 $ 3,184 $ 1,283 $ 394 $ 217 $ 649 $ 6,866 Ending balance: loans acquired with deteriorated credit quality $ 1 $ — $ — $ — $ — $ — $ — $ — $ 1 FINANCING RECEIVABLES: Ending balance $ 86,912 $ 63,352 $ 84,692 $ 376,887 $ 115,093 $ 33,213 $ — $ — $ 760,149 Ending balance: individually evaluated for impairment $ 1,103 $ 132 $ — $ 501 $ 116 $ — $ — $ — $ 1,852 Ending balance: collectively evaluated for impairment $ 85,809 $ 63,220 $ 84,692 $ 376,386 $ 114,977 $ 33,213 $ — $ — $ 758,297 Ending balance: loans acquired with deteriorated credit quality $ 200 $ — $ — $ — $ — $ — $ — $ — $ 200 (In Thousands) Consumer Agricultural Agricultural Commercial Commercial Consumer Unfunded Unallocated Total 2015 ALLOWANCE FOR CREDIT LOSSES: Beginning balance $ 537 $ 184 $ 547 $ 2,367 $ 1,421 $ 323 $ 207 $ 526 $ 6,112 Charge Offs (38 ) — — (143 ) (536 ) (313 ) — — (1,030 ) Recoveries 41 — 64 204 91 157 — — 557 Provision (Credit) (202 ) 27 (29 ) 88 253 170 — 318 625 Other Non-interest — — — — — — 1 — 1 Ending Balance $ 338 $ 211 $ 582 $ 2,516 $ 1,229 $ 337 $ 208 $ 844 $ 6,265 Ending balance: individually evaluated for impairment $ 64 $ — $ — $ 152 $ 114 $ — $ — $ — $ 330 Ending balance: collectively evaluated for impairment $ 274 $ 211 $ 582 $ 2,364 $ 1,115 $ 337 $ 208 $ 844 $ 5,935 Ending balance: loans acquired with deteriorated credit quality $ 1 $ — $ — $ — $ — $ — $ — $ — $ 1 FINANCING RECEIVABLES: Ending balance $ 87,947 $ 58,463 $ 82,762 $ 322,230 $ 106,689 $ 27,787 $ — $ — $ 685,878 Ending balance: individually evaluated for impairment $ 431 $ 63 $ — $ 1,460 $ 182 $ — $ — $ — $ 2,136 Ending balance: collectively evaluated for impairment $ 87,516 $ 58,400 $ 82,762 $ 320,770 $ 106,507 $ 27,787 $ — $ — $ 683,742 Ending balance: loans acquired with deteriorated credit quality $ 507 $ — $ — $ — $ — $ — $ — $ — $ 507

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Premises and Equipment	Note 5 - Premises and Equipment The major categories of banking premises and equipment and accumulated depreciation at December 31 are summarized below: (In Thousands) 2016 2015 Land $ 5,647 $ 5,647 Buildings (useful life 15-39 23,526 21,943 Construction in Progress — 329 Furnishings (useful life 3-15 12,673 11,783 41,846 39,702 Less: Accumulated depreciation (20,389 ) (19,115 ) Premises and Equipment (Net) $ 21,457 $ 20,587 Depreciation expense for the years ended December 31, 2016, 2015 and 2014 amounted to $1.5, $1.4, and $1.3 million, respectively.

Servicing

Servicing	12 Months Ended
	Dec. 31, 2016
Transfers and Servicing [Abstract]
Servicing	Note 6 - Servicing Loans serviced for others are not included in the accompanying consolidated balance sheets. The unpaid principal balances of loans serviced for others were $280.4 and $275.6 million at December 31, 2016 and 2015, respectively. The balance of capitalized servicing rights included in other assets at December 31, 2016 and 2015, was $2.2 and $2.1 million, respectively. The capitalized addition of servicing rights is included in net gain on sale of loans on the consolidated statement of income. The fair market value of the capitalized servicing rights as of December 31, 2016 and 2015 was $2.5 million and $2.7 million, respectively. The valuations were completed by stratifying the loans into like groups based on loan type and term. Impairment was measured by estimating the fair value of each stratum, taking into consideration an estimated level of prepayment based upon current market conditions. An average constant prepayment rate of 14.3% and 11.0% were utilized for 2016 and 2015, respectively. All stratums showed positive values compared to carrying value using a discount yield of 5.38% for 2016 and 6.52% for 2015. The following summarizes mortgage servicing rights capitalized and amortized during each year: (In Thousands) 2016 2015 Beginning Year $ 2,056 $ 2,023 Capitalized Additions 555 407 Amortization (419 ) (374 ) Valuation Allowance — — End of Year $ 2,192 $ 2,056

Deposits

Deposits	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Deposits	Note 7 - Deposits Time deposits as of December 31 consist of the following: (In Thousands) 2016 2015 Time deposits under $100,000 $ 98,890 $ 103,424 Time deposits of $100,000 or more 99,940 80,861 $ 198,830 $ 184,285 At December 31, 2016 the scheduled maturities for time deposits are as follows: (In Thousands) 2017 $ 79,407 2018 46,687 2019 25,876 2020 20,478 2021 25,559 thereafter 823 $ 198,830

Federal Funds Purchased and Sec

Federal Funds Purchased and Securities Sold Under Agreement to Repurchase	12 Months Ended
	Dec. 31, 2016
Brokers and Dealers [Abstract]
Federal Funds Purchased and Securities Sold Under Agreement to Repurchase	Note 8 – Federal Funds Purchased and Securities Sold Under Agreement to Repurchase The Bank’s policy requires qualifying securities to be used as collateral for the underlying repurchase agreements. As of December 31, 2016 and 2015 securities with a book value of $56.0 million and $65.8 million, respectively, were pledged to secure the repurchase agreements. The table below presents the daily securities sold under agreement to repurchase and the term repurchase agreements. It does not include the Bank’s Federal Funds purchased. Daily Securities Sold Under Agreement to Repurchase Amount Weighted Maximum Amount Approximate Approximate 2016 $ 32,814 0.20 % $ 43,929 $ 39,928 0.10 % 2015 $ 39,691 0.08 % $ 46,564 $ 39,371 0.08 % Term CD’s Sold Under Agreement to Repurchase Amount Weighted Maximum Amount Approximate Approximate 2016 $ 20,510 1.96 % $ 20,510 $ 19,562 1.88 % 2015 $ 17,124 2.00 % $ 17,961 $ 17,294 1.62 % The Company had $17.0 and $22.0 million of Federal Funds Purchased as of December 31, 2016 and December 31, 2015 respectively. The $53.3 million in Securities Sold Under Agreements to Repurchase were comprised of U.S. Treasuries and government agency securities. The table below shows the remaining contractual maturity in the repurchase agreements December 31, 2016. December 31, 2016 Remaining Contratual Maturity of the Agreements Overnight & Up to 30 days 30-90 days Greater Than Total Federal funds Purchased $ 17,000 $ — $ — $ — $ 17,000 Repurchase Agreements US Treasury & agency securities 32,814 — — 20,510 53,324 Total $ 49,814 $ — $ — $ 20,510 $ 70,324

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Federal Home Loan Bank Advances	Note 9 - Federal Home Loan Bank Advances Long term debit consists of various loans from the Federal Home Loan Bank. Repayment structures vary, ranging from monthly installments, annual payments or upon maturity. Interest payments are due monthly. As of December 31, 2016, the Bank had two loans which were structured as single maturities with interest rates of 1.61% and 1.34%. Total borrowings were $10.0 million and $10.0 million for December 31, 2016 and 2015, respectively. The advances were secured by $17.9 and $20.0 million of mortgage loans as of December 31, 2016 and 2015, respectively under a blanket collateral agreement. The advances are subject to pre-payment (In Thousands) 2017 5,000 2018 5,000 $ 10,000 The Bank had access to $58 million of unsecured borrowings through correspondent banks as of both December 31, 2016 and December 31, 2015. $71.8 million and $29.4 million at the end of the same time periods, respectively, were unpledged securities which could be sold or used as collateral. An additional $4.7 million at December 31, 2016, and $4.1 million at December 31, 2015, were available from the Federal Home Loan Bank based on current pledging, with up to $115.7 million and $118.5 million, respectively, available provided adequate collateral is pledged.

Federal Income Taxes

Federal Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal Income Taxes	Note 10 - Federal Income Taxes The components of income tax expense (benefit) for the years ended December 31 are as follows: (In Thousands) 2016 2015 2014 Current: Federal $ 4,601 $ 3,941 $ 3,837 Deferred: Federal 55 (122 ) 34 $ 4,656 $ 3,819 $ 3,871 The following is a reconciliation of the statutory federal income tax rate to the effective tax rate (In Thousands) 2016 2015 2014 Income tax at statutory rates $ 5,521 $ 4,792 $ 4,596 Decrease resulting from: Tax exempt interest (468 ) (554 ) (634 ) Change in prior estimates and other (397 ) (419 ) (91 ) $ 4,656 $ 3,819 $ 3,871 Deferred tax assets and liabilities at December 31 are comprised of the following: 2016 2015 Deferred Tax Assets: Allowance for loan losses $ 2,326 $ 2,080 Other 553 528 Net unrealized gain on available-for-sale 1,016 — Total deferred tax assets 3,895 2,608 Deferred Tax Liabilities: Accreted discounts on bonds 83 100 FHLB stock dividends 744 745 Mortgage servicing rights 752 706 Other 1,745 1,389 Net unrealized gain on available-for-sale — 109 Total deferred tax liabilities 3,324 3,049 Net Deferred Tax Asset (Liability) $ 571 $ (441 )

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Note 11 - Employee Benefit Plans The Bank has established a 401(k) profit sharing plan, which allows eligible employees to save at a minimum one percent of eligible compensation on a pre-tax six-year Restricted Stock Awards The Company has a Long-Term Stock Incentive Plan under which 16,150 shares of restricted stock were issued to 74 employees during 2016, 16,000 shares of restricted stock were issued to 67 employees during 2015 and 13,250 shares of restricted stock were issued to 61 employees during 2014. Under the plan, the shares vest 100% in three years. During the 3 year vesting period, the employees receive dividends or dividend equivalent compensation on the shares. Due to employee termination, there were 773, 100, and 780 forfeited during 2016, 2015 and 2014, respectively. During 2016, 4 employees retired and received 1,197 shares from the shares awarded in 2013, 2014 and 2015. During 2015, due to retirement, one employee received 250 shares from awards granted in 2012, 2013 and 2014 and 325 shares were paid to the estate of a deceased employee awarded during the same time periods. Due to retirement in 2014, two employees received 965 shares. During 2016, 10,025 shares awarded in 2013, were vested 100% and 45 employees received the stock During 2015, 9,720 shares awarded in 2012, were vested 100% and 45 employees received the stock. During 2014, 10,005 shares awarded in 2011, were vested 100%, and 48 employees received the stock. Compensation expense applicable to the restricted stock totaled $379, $286 and $252 thousand for the years ending December 31, 2016, 2015 and 2014, respectively. The following table summarizes the activity of restricted stock awards as of December 31: Year Ended December 31, 2016 2015 2014 Number of Weighted Number of Weighted Number of Weighted Beginning of period 38,995 24.92 33,390 22.77 31,890 20.38 Granted 16,150 32.02 16,000 26.35 13,250 25.50 Vested (11,222 ) 31.72 (10,295 ) 26.33 (10,970 ) 25.39 Forfeited (773 ) 31.54 (100 ) 26.07 (780 ) 24.97 Nonvested, end of period 43,150 28.20 38,995 24.92 33,390 22.77 As of December 31, 2016, there was $730 thousand of unrecognized compensation cost related to the nonvested portion of restricted stock awards under the plan. Expense for restricted stock awards of $402 thousand, $314 thousand, and $232 thousand was recorded for the years ended December 31, 2016, 2015, and 2014, respectively.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Note 12 – Earnings Per Share Basic earnings per share is calculated using the two-class method. The two-class method is an earnings allocation formula under which earnings per share is calculated from common stock and participating securities according to dividends declared and participation rights in undistributed earnings. Under this method, all earnings distributed and undistributed, are allocated to participating securities and common shares based on their respective rights to receive dividends. Unvested share-based payment awards that contain non-forfeitable rights to dividends are considered participating securities (i.e. unvested restricted stock), not subject to performance based measures. Basic earnings per share is calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding. Application of the two-class The table below presents basic and diluted earnings per share for the years ended December 31, 2016, 2015, and 2014. Year Ended December 31, December 31, December 31, Earnings per share Net income $ 11,664 $ 10,340 $ 9,646 Less: distributed earnings allocated to participating securities (37 ) (31 ) (27 ) Less: undistributed earnings allocated to participating securities (64 ) (47 ) (40 ) Net earnings available to common shareholders $ 11,563 $ 10,262 $ 9,579 Weighted average common shares outstanding including participating securities 4,612,115 4,617,058 4,628,178 Less: average unvested resticted shares (39,982 ) (35,000 ) (32,278 ) Weighted average common shares outstanding 4,572,133 4,582,058 4,595,900 Basic and diluted earnings per share $ 2.53 $ 2.24 $ 2.08

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Note 13 - Related Party Transactions In the ordinary course of business, the Bank has granted loans to senior officers and directors and their affiliated companies amounting to $1.5 million and $739 thousand at December 31, 2016 and 2015, respectively. One new loan was approved during 2016 of which no additional borrowings were utilized. During 2016, subsequent advances totaled $9.9 million and payments of $10.1 million were received. The difference in related borrowings amounted to $757 thousand, net increase. Deposits of directors, executive officers and companies in which they have a direct or indirect ownership as of December 31, 2016 and 2015, amounted to $21.7 million and $26.3 million, respectively.

Off Balance Sheet Activities

Off Balance Sheet Activities	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Off Balance Sheet Activities	Note 14 - Off Balance Sheet Activities Credit Related Financial Instruments The Bank is a party to credit related financial instruments with off-balance-sheet The Bank’s exposure to credit loss is represented by the contractual amount of these commitments. The Bank follows the same credit policies in making commitments as it does for on-balance-sheet At December 31, 2016 and 2015, the following financial instruments were outstanding whose contract amounts represent credit risk: (In Thousands) 2016 2015 Commitments to extend credit $ 223,534 $ 246,321 Credit card arrangements 18,316 16,100 Standby letters of credit 875 770 Commitments to extend credit, credit card arrangements and Standby Letters of Credit all include exposure to some credit loss in the event of nonperformance of the customer. The Bank’s credit policies and procedures for credit commitments and financial guarantees are the same as those for extensions of credit that are recorded in the financial statements. Due to the fact that these instruments have fixed maturity dates, and because many of them expire without being drawn upon, they generally do not present any significant liquidity risk to the Bank. Collateral Requirements To reduce credit risk related to the use of credit-related financial instruments, the Bank might deem it necessary to obtain collateral. The amount and nature of the collateral obtained is based on the Bank’s credit evaluation of the customer. Collateral held varies but may include cash, securities, accounts receivable, inventory, property, plant, and real estate. Legal Contingencies Various legal claims also arise from time to time in the normal course of business, which, in the opinion of management, will have no material effect on the Company’s consolidated financial statements.

Minimum Regulatory Capital Requ

Minimum Regulatory Capital Requirements	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Minimum Regulatory Capital Requirements	Note 15 - Minimum Regulatory Capital Requirements The Company (on a consolidated basis) and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s and Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Prompt corrective action provisions are not applicable to bank holding companies. The Basel III Capital Rules, a new comprehensive capital framework for U.S. banking organizations, became effective for on January 1, 2015 (subject to a phase-in In connection with the adoption of the Basel III Capital Rules, we elected to opt-out The Common Equity Tier 1 (beginning in 2015), Tier 1 and Total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, with certain exclusions, allocated by risk weight category, and certain off-balance-sheet When fully phased in on January 1, 2019, the Basel III Capital Rules will require the Company and Bank to maintain (i) a minimum ratio of Common Equity Tier 1 capital to risk-weighted assets of at least 4.5%, plus a 2.5% “capital conservation buffer” (which is added to the 4.5% Common Equity Tier 1 capital ratio as that buffer is phased in, effectively resulting in a minimum ratio of Common Equity Tier 1 capital to risk-weighted assets of at least 7.0% upon full implementation), (ii) a minimum ratio of Tier 1 capital to risk-weighted assets of at least 6.0%, plus the capital conservation buffer (which is added to the 6.0% Tier 1 capital ratio as that buffer is phased in, effectively resulting in a minimum Tier 1 capital ratio of 8.5% upon full implementation), (iii) a minimum ratio of Total capital (that is, Tier 1 plus Tier 2) to risk-weighted assets of at least 8.0%, plus the capital conservation buffer (which is added to the 8.0% total capital ratio as that buffer is phased in, effectively resulting in a minimum total capital ratio of 10.5% upon full implementation) and (iv) a minimum leverage ratio of 4.0%, calculated as the ratio of Tier 1 capital to average quarterly assets. The implementation of the capital conservation buffer began on January 1, 2016 at the 0.625% level and will be phased in over a four-year period (increasing by that amount on each subsequent January 1, until it reaches 2.5% on January 1, 2019). The Basel III Capital Rules also provide for a “countercyclical capital buffer” that is applicable to only certain covered institutions and does not have any current applicability to the Company or Bank. The capital conservation buffer is designed to absorb losses during periods of economic stress and, as detailed above, effectively increases the minimum required risk-weighted capital ratios. Banking institutions with a ratio of Common Equity Tier 1 capital to risk-weighted assets below the effective minimum (4.5% plus the capital conservation buffer and, if applicable, the countercyclical capital buffer) will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall. Management believes, as of December 31, 2016, that the Bank meets all the capital adequacy requirements to which it is subject. As of December 31, 2016 the most recent notification from the FDIC indicated the Bank was categorized as well capitalized under the regulatory framework for prompt corrective action. To remain categorized as well capitalized, the Bank will have to maintain minimum total risk-based, Tier I risk-based, Common Tier 1 and Tier I leverage ratios as disclosed in the table to follow. There are no conditions or events since the most recent notification that management believes have changed the Bank’s prompt corrective action category. The following tables present actual and required capital ratios as of December 31, 2016 and December 31, 2015 under the Basel III Capital Rules. The minimum required capital amounts presented include the minimum required capital levels as of December 31, 2016 and December 31, 2015. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. The Company and the Bank’s actual and required capital amounts and ratios as of December 31, 2016 are as follows: Actual Minimum Capital Required to (000’s) Ratio (000’s) Ratio (000’s) Ratio As of December 31, 2016 Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 123,031 14.46 % $ 38,296 4.50 % N/A N/A Farmers & Merchants State Bank 100,999 11.91 % 38,156 4.50 % $ 55,115 6.50 % Total Risk-Based Capital (to Risk Weighted Assets) Consoildated 130,032 15.28 % 68,081 8.00 % N/A N/A Farmers & Merchants State Bank 108,000 12.73 % 67,833 8.00 % 84,792 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated 123,031 14.46 % 51,061 6.00 % N/A N/A Farmers & Merchants State Bank 100,999 11.91 % 50,875 6.00 % 67,833 8.00 % Tier 1 Leverage Capital (to Adjusted Total Assets) Consolidated 123,031 11.77 % 41,826 4.00 % N/A N/A Farmers & Merchants State Bank 100,999 9.75 % 41,425 4.00 % 51,181 5.00 % The following table presents the Company and the Bank’s actual and required capital amounts and ratios as of December 31, 2015. Actual Minimum Capital Required to (000’s) Ratio (000’s) Ratio (000’s) Ratio As of December 31, 2015 Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 115,386 14.18 % $ 36,626 4.50 % N/A N/A Farmers & Merchants State Bank 96,231 11.87 % 36,494 4.50 % $ 52,714 6.50 % Total Risk-Based Capital (to Risk Weighted Assets) Consolidated 121,651 14.95 % 65,113 8.00 % N/A N/A Farmers & Merchants State Bank 102,496 12.64 % 64,879 8.00 % 81,099 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated 115,386 14.18 % 48,834 6.00 % N/A N/A Farmers & Merchants State Bank 96,231 11.87 % 48,659 6.00 % 64,879 8.00 % Tier 1 Leverage Capital (to Adjusted Total Assets) Consolidated 115,386 11.91 % 38,752 4.00 % N/A N/A Farmers & Merchants State Bank 96,231 10.12 % 38,019 4.00 % 47,524 5.00 %

Restrictions of Dividends & Int

Restrictions of Dividends & Inter-company Borrowings	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Restrictions of Dividends & Inter-company Borrowings	Note 16 - Restrictions of Dividends & Inter-company Borrowings The Bank is restricted as to the amount of dividends that can be paid. Dividends declared by the Bank that exceed the net income for the current year plus retained income for the preceding two years must be approved by federal and state regulatory agencies. Under this formula dividends of $12.1 million may be paid without prior regulatory approval. Regardless of formal regulatory restrictions, the Bank may not pay dividends that would result in its capital levels being reduced below the minimum requirements shown above. Under current Federal Reserve regulations, the Bank is limited as to the amount and type of loans it may make to the Company. These loans are subject to qualifying collateral requirements on which the amount of the loan may be based.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 17 - Fair Value of Financial Instruments Fair values of financial instruments are management’s estimate of the values at which the instruments could be exchanged in a transaction between willing parties. These estimates are subjective and may vary significantly from amounts that would be realized in actual transactions. In addition, other significant assets are not considered financial assets including deferred tax assets, premises, equipment and intangibles. Further, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on the fair value estimates and have not been considered in any of the estimates. The following assumptions and methods were used in estimating the fair value for financial instruments: Cash and Cash Equivalents The carrying amounts reported in the balance sheet for cash, cash equivalents and federal funds sold approximate their fair values. Also included in this line item are the carrying amounts of interest-bearing deposits maturing within ninety days which approximate their fair values. Fair values of other interest- Interest Bearing Time Deposits Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow analysis that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits. Securities – Available-for-sale Fair values for securities, excluding Federal Home Loan Bank and Farmer Mac stock, are based on quoted market price, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments. Other Securities The carrying value of Federal Home Loan Bank and Farmer Mac stock, listed as “other securities,” approximates fair value based on the redemption provisions of the Federal Home Loan Bank. Loans, net For net variable-rate loans that re-price Deposits The fair values disclosed for deposits with no defined maturities are equal to their carrying amounts, which represent the amount payable on demand. The carrying amounts for variable-rate, fixed-term money market accounts and certificates of deposit approximate their fair value at the reporting date. Fair value for fixed-rate certificates of deposit are estimated using a discounted cash flow analysis that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits. Federal Funds Purchased and Securities Sold Under Agreement to Repurchase The carrying value of Federal Funds purchased and securities sold under agreement to repurchase approximates fair values. FHLB Advances Fair values or FHLB advances are estimated using discounted cash flow analysis based on the Company’s current incremental borrowing rates for similar types or borrowing arrangements. Accrued Interest Receivable and Payable The carrying amounts of accrued interest approximate fair values. Off Balance Sheet Financial Instruments Fair values for off-balance-sheet, The estimated fair values, and related carrying or notional amounts, for on and off-balance (In Thousands) December 2016 December 2015 Carrying Fair Level 1 Level 2 Level 3 Carrying Fair Level 1 Level 2 Level 3 Financial Assets: Cash and Cash Equivalents $ 28,322 $ 28,322 $ 28,322 $ — $ — $ 22,018 $ 22,018 $ 22,018 $ — $ — Interest-bearing time deposits 1,915 1,918 — 1,918 — — — — — — Securities - available for sale 218,527 218,527 24,775 192,334 1,418 235,115 235,115 38,505 189,258 7,352 Other Securities 3,717 3,717 — — 3,717 3,717 3,717 — — 3,717 Loans, net 753,365 755,412 — — 755,412 679,821 683,332 — — 683,332 Interest receivable 3,880 3,880 — — 3,880 3,589 3,589 — — 3,589 Financial Liabilities: Interest bearing Deposits $ 456,983 $ 456,983 $ — $ — $ 456,983 $ 415,942 $ 415,942 $ — $ — $ 415,942 Non-interest 186,390 186,390 — 186,390 — 171,112 171,112 — 171,112 — Time Deposits 198,830 199,658 — — 199,658 184,285 184,308 — — 184,308 Total Deposits $ 842,203 $ 843,031 $ — $ 186,390 $ 656,641 $ 771,339 $ 771,362 $ — $ 171,112 $ 600,250 Federal Funds purchased and Securities sold under agreement to repurchase 70,324 70,324 — — 70,324 78,815 78,815 — — 78,815 Federal Home Loan Bank advances 10,000 10,041 — — 10,041 10,000 9,986 — — 9,986 Interest payable 256 256 — — 256 185 185 — — 185 Fair Value Measurements The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis at December 31, 2016 and 2015, and the valuation techniques used by the Company to determine those fair values. In general, fair values determined by Level 1 inputs use quoted prices in active markets for identical assets or liabilities in active markets that the Company has the ability to access. Available-for-sale Fair values determined by Level 2 inputs use other inputs that are observable, either directly or indirectly. These Level 2 inputs include quoted prices for similar assets and liabilities in active markets, and other inputs such as interest rates and yield curves that are observable at commonly quoted intervals. Available-for-sale Level 3 inputs are unobservable inputs, including inputs that are available in situations where there is little, if any, market activity for the related asset or liability. The Bank holds some local municipals that the Bank evaluates based on the credit strength of the underlying project. The fair value is determined by valuing similar credit payment streams at similar rates. In instances where inputs used to measure fair value fall into different levels in the above fair value hierarchy, fair value measurements in their entirety are categorized based on the lowest level input that is significant to the valuation. The Company’s assessment of the significance of particular inputs to these fair value measurements requires judgment and considers factors specific to each asset. The following table summarizes financial assets measured at fair value on a recurring basis as of December 31, 2016 and December 31, 2015 segregated by level or the valuation inputs within the fair value hierarchy utilized to measure fair value. Assest and Liabilities Measured at Fair Value on a Recurring Basis (In Thousands) December 31, 2016 Quoted Prices in Significant Significant Assets-(Securities Available for Sale) U.S. Treasury $ 24,775 $ — $ — U.S. Government agencies — 82,474 — Mortgage-backed securities — 48,461 — State and local governments — 61,399 1,418 Total Securities Available for Sale $ 24,775 $ 192,334 $ 1,418 December 31, 2015 Quoted Prices in Significant Significant Assets-(Securities Available for Sale) U.S. Treasury $ 38,505 $ — $ — U.S. Government agencies — 98,220 — Mortgage-backed securities — 26,324 — State and local governments — 64,714 7,352 Total Securities Available for Sale $ 38,505 $ 189,258 $ 7,352 (In Thousands) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) State and Local Tax-Exempt State and Local State and Local Balance at January 1, 2016 $ 5,904 $ 1,448 $ 7,352 Change in Market Value (264 ) (30 ) (294 ) Purchases — — — Sales — — — Payments & Maturities (5,640 ) — (5,640 ) Balance at December 31, 2016 $ — $ 1,418 $ 1,418 (In Thousands) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) State and Local State and Local State and Local Governments Governments Governments Tax-Exempt Taxable Total Balance at January 1, 2015 $ 6,638 $ 1,293 $ 7,931 Change in Market Value (259 ) 155 (104 ) Purchases — — — Sales — — — Payments & Maturities (475 ) — (475 ) Balance at December 31, 2015 $ 5,904 $ 1,448 $ 7,352 Most of the Company’s available for sale securities, including any bonds issued by local municipalities, have CUSIP numbers or have similar characteristics of those in the municipal markets, making them marketable and comparable as Level 2. There have been no transfers between Levels 1, 2, and 3 during 2016 and 2015. The Company also has assets that, under certain conditions, are subject to measurement at fair value on a non-recurring non-homogeneous At December 31, 2016 and 2015, collateral dependent impaired loans categorized as Level 3 were $1.7 and $1.8 million, respectively. The specific allocation for collateral dependent impaired loans was $134.5 thousand as of December 31, 2016 and $329.3 thousand as of December 31, 2015, respectively, which are accounted for in the allowance for loan losses (see Note 4). Other real estate is reported at the lower of either the fair value of the real estate, minus the estimated costs to sell the asset, or the cost of the asset. The determination of the fair value of the real estate relies primarily on appraisals from third parties. If the fair value of the real estate, minus the estimated costs to sell the asset, is less than the asset’s cost, the deficiency is recognized as a valuation allowance against the asset through a charge to expense. The valuation allowance is therefore increased or decreased, through charges or credits to expense, for changes in the asset’s fair value or estimated selling costs. The following table presents collateral dependent impaired loans and other real estate owned as recorded at fair value: Assets Measured at Fair Value on a Nonrecurring Basis at December 31, 2016 Quoted Prices in Change in Markets for Significant Significant fair value for Balance at Identical Observable Inputs Unobservable Inputs twelve-month period ($ in Thousands) December 31, 2016 Assets (Level 1) (Level 2) (Level 3) ended Dec. 31, 2016 Collateral dependent impaired loans $ 576 $ — $ — $ 576 $ (1,564 ) Other real estate owned - residential 144 — — 144 (1 ) Total change in fair value $ (1,565 ) Assets Measured at Fair Value on a Nonrecurring Basis at December 31, 2015 Quoted Prices in Change in Markets for Significant Significant fair value for Balance at Identical Observable Inputs Unobservable Inputs twelve-month period ($ in Thousands) December 31, 2015 Assets (Level 1) (Level 2) (Level 3) ended Dec. 31, 2015 Collateral dependent impaired loans $ 549 $ — $ — $ 549 $ (17 ) Other real estate owned - commercial 216 — — 216 (32 ) Total change in fair value $ (49 ) The following table presents quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements: Fair Value at Range December 31, 2016 Valuation Technique Unobservable Inputs Average) State and local government $ 1,418 Discounted Cash Flow Credit strength of underlying project or entity / Discount rate 0-5 (3.92 % %) Collateral dependent Impaired Loans 576 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0-50 (18.92 % %) Other real estate owned - residential 144 Appraisals Discount to reflect current market 0-20 (0.51 % %) Fair Value at Range December 31, 2015 Valuation Technique Unobservable Inputs Average) State and local government $ 7,352 Discounted Cash Flow Credit strength of underlying project or entity / Discount rate 0-5 (2.57 % %) Collateral dependent Impaired Loans 549 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0-50 (37.46 % %) Other real estate owned - commercial 216 Appraisals Discount to reflect current market 0-20 (12.28 % %) The Company also has other assets, which under certain conditions, are subject to measurement at fair value. These assets include loans held for sale, bank owned life insurance, and mortgage servicing rights. The Company estimated the fair values of these assets utilizing Level 3 inputs, including, the discounted present value of expected future cash flows. At December 31, 2016, the Company estimates that there is no impairment of these assets and therefore, no impairment charge to other expense was required to adjust these assets to their estimated fair values.

Condensed Financial Statements

Condensed Financial Statements of Parent Company	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Financial Statements of Parent Company	Note 18 – Condensed Financial Statements of Parent Company Balance Sheets (In Thousands) 2016 2015 Assets Cash $ 1,435 $ 787 Related party receivables: Dividends & Accounts receivable from subsidiaries 1,842 1,730 Accrued interest receivable Municipals 63 63 Securities - Municipals 17,290 16,388 Investment in subsidiaries 106,044 102,178 Total Assets $ 126,674 $ 121,146 Liabilities Accrued expenses $ 44 $ 42 Dividends payable 1,053 1,007 Total Liabilities 1,097 1,049 Stockholders’ Equity 125,577 120,097 Total Liabilities and Stockholders’ Equity $ 126,674 $ 121,146 Statements of Income and Comprehensive Income (In Thousands) 2016 2015 2014 Income Dividends from subsidiaries $ 6,000 $ 6,220 $ 5,725 Interest — — — Interest Municipals 272 219 215 Gain on sales of available-for-sale — 124 — Total Income 6,272 6,563 5,940 Operating Expenses 681 677 577 Income Before Income Taxes and Equity in Undistributed Earnings of Subsidiaries 5,591 5,886 5,363 Income Taxes (Benefit) (238 ) (188 ) (196 ) 5,829 6,074 5,559 Equity in undistributed earnings of Subsidiaries 5,835 4,266 4,087 Net Income $ 11,664 $ 10,340 $ 9,646 Other Comprehensive Income (Loss): Unrealized gains (losses) on securities (2,184 ) (232 ) 438 Comprehensive Income $ 9,480 $ 10,108 $ 10,084 Statements of Cash Flows (In Thousands) 2016 2015 2014 Cash Flows from Operating Activities Net income $ 11,664 $ 10,340 $ 9,646 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: Equity in undistributed net income (Distributions in excess earnings) of subsidiaries (5,835 ) (4,266 ) (4,087 ) Accretion & Amortization of Securities 179 152 146 Gain on Sale of Available for Sale Securities — (124 ) — Changes in Assets and Liabilities: Dividends receivable — 475 (1,025 ) Other Assets and Liabilities 355 156 (12 ) Net Cash Provided by Operating Activities 6,363 6,733 4,668 Cash Flows from Investing Activities Investing in Subsidiaries — — (250 ) Activitiy in available for sale securities: Maturities, prepayments and calls 1,485 1,000 — Sales — 6,282 — Purchases (2,891 ) (8,784 ) — Repayment of Subsidiary Subordinated Debt — — — Net Cash used in Investing Activities (1,406 ) (1,502 ) (250 ) Cash Flows from Financing Activities Payment of dividends (4,115 ) (3,943 ) (3,862 ) Purchase of Treasury Stock (194 ) (803 ) (576 ) Net Cash Used in Financing Activities (4,309 ) (4,746 ) (4,438 ) Net Change in Cash and Cash Equivalents 648 485 (20 ) Cash and Cash Equivalents Beginning of year 787 302 322 Cash and Cash Equivalents End of year $ 1,435 $ 787 $ 302 During the fourth quarter of 2014, the Company established a new subsidiary, Farmers & Merchants Risk Management, Inc. which is a Captive insurance company.

Quarterly Financial Data

Quarterly Financial Data	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	Note 19 – Quarterly Financial Data Quarterly Financial Data - UNAUDITED (000’s omitted except per share data) Mar 31 June 30 Sep 30 Dec 31 Summary of Income: Interest income $ 9,004 $ 9,387 $ 9,590 $ 9,746 Interest expense 996 1,047 1,099 1,081 Net Interest Income 8,008 8,340 8,491 8,665 Provision for loan loss 277 339 308 197 Net interest income after provision of loan loss 7,731 8,001 8,183 8,468 Other income (expense) (4,316 ) (3,773 ) (4,007 ) (3,967 ) Net income before income taxes 3,415 4,228 4,176 4,501 Income taxes 934 1,254 1,161 1,307 Net income $ 2,481 $ 2,974 $ 3,015 $ 3,194 Earnings per Common Share $ 0.54 $ 0.65 $ 0.65 $ 0.70 Average common shares outstanding 4,609,226 4,605,534 4,612,766 4,620,831 Quarter Ended in 2015 Mar 31 June 30 Sep 30 Dec 31 Summary of Income: Interest income $ 8,184 $ 8,289 $ 8,444 $ 8,733 Interest expense 858 871 935 923 Net Interest Income 7,326 7,418 7,509 7,810 Provision for loan loss 114 183 243 85 Net interest income after provision for loan loss 7,212 7,235 7,266 7,725 Other income (expense) (4,008 ) (3,682 ) (3,685 ) (3,904 ) Net income before income taxes 3,204 3,553 3,581 3,821 Income taxes 853 956 961 1,049 Net income $ 2,351 $ 2,597 $ 2,620 $ 2,772 Earnings per common share $ 0.51 $ 0.56 $ 0.57 $ 0.60 Average common shares outstanding 4,623,322 4,608,453 4,615,379 4,621,122

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations The Farmers & Merchants Bancorp, Inc. (the Company) through its bank subsidiary, The Farmers & Merchants State Bank (the Bank) provides a variety of financial services to individuals and small businesses through its offices in Northwest Ohio and Northeast Indiana.
Consolidation Policy	Consolidation Policy The consolidated financial statements include the accounts of Farmers & Merchants Bancorp, Inc. and its wholly-owned subsidiaries, The Farmers & Merchants State Bank (the Bank), a commercial banking institution and Farmers & Merchants Risk Management, Inc. (the Captive), a Captive insurance company. All significant inter-company balances and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses and the valuation of mortgage servicing rights, goodwill, available for sale investment securities, other real estate owned and impaired loans. Actual results could differ from those estimates. The determination of the adequacy of the allowance for loan losses is based on estimates that are particularly susceptible to significant changes in the economic environment and market conditions. In connection with the determination of the estimated losses on loans, management obtains independent appraisals for significant collateral. The Bank’s loans are generally secured by specific items of collateral including real property, consumer assets, and business assets. Although the Bank has a diversified loan portfolio, a substantial portion of its debtors’ ability to honor their contracts is dependent on local economic conditions in the agricultural industry. While management uses available information to recognize losses on loans, further reductions in the carrying amounts of loans may be necessary based on changes in local economic conditions. In addition regulatory agencies, as an integral part of their examination process, periodically review the estimated losses on loans. Such agencies may require the Bank to recognize additional losses based on their judgments about information available to them at the time of their examination. Because of these factors, it is reasonably possible that the estimated losses on loans may change materially in the near term. However, the amount of the change that is reasonably possible cannot be estimated.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of the consolidated statement of cash flows, the Company considers all highly liquid debt instruments purchased with an original maturity of three months or less to be cash equivalents. This includes cash on hand, amounts due from banks, and federal funds sold. Generally, federal funds are purchased for one day periods.
Restrictions on Cash and Amounts Due from Banks	Restrictions on Cash and Amounts Due from Banks The Bank is required to maintain average balances on hand with the Federal Reserve Bank. The aggregate reserve was $5.0 million for December 31, 2016 and it was $6.5 million for December 31, 2015. The Company and its subsidiaries maintain cash balances with high quality credit institutions. At times such balances may be in excess of the federally insured limits.
Securities	Securities Debt securities are classified as available-for-sale. available-for-sale Declines in the fair value of securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In estimating other-than-temporary impairment losses, management considers (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. The related write-downs are included in earnings as realized losses.
Other Securities	Other Securities Other Securities consists of Federal Home Loan Bank of Cincinnati stock and Farmer Mac stock. These stocks are carried at cost and are held to enable the Bank to conduct business with the entities. The Federal Home Loan Bank sells and purchases their stock at par. The Federal Home Loan Bank of Cincinnati stock is held as collateral security for all indebtedness of the Bank to the Federal Home Loan Bank. The Federal Home Loan Bank of Cincinnati is evaluated for impairment as conditions warrant.
Loans	Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off Generally, a loan is classified as nonaccrual and the accrual of interest income is generally discontinued when a loan becomes ninety days past due as to principal or interest and these loans are placed on a “cash basis” for purposes of income recognition. Management may elect to continue the accrual of interest when the estimated net realizable value of collateral is sufficient to cover the principal and accrued interest, and the loan is in the process of collection. When a loan is placed on nonaccrual status, all previously accrued and unpaid interest receivable is charged against income. Loan origination and commitment fees and certain direct loan origination costs are deferred and amortized as a net adjustment to the related loan’s yield. The Bank is generally amortizing these costs over the contractual life of such loans.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is established through a provision for loan losses charged to income. Loans deemed to be uncollectable and changes in the allowance relating to loans are charged against the allowance for loan losses, and subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a regular basis by management and is based on management’s periodic review of the collectability of the loans in light of historical experiences, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are subject to revision as more information becomes available. The allowance consists of specific, general and unallocated components. The specific component relates to loans that are classified as doubtful, substandard or special mention. For such loans that are also classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component covers non-classified A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case At 90 days delinquent, secured consumer loans are charged down to the value of the collateral, if repossession of the collateral is assured and/or in the process of repossession. Consumer mortgage loan deficiencies are charged down upon the sale of the collateral or sooner upon the recognition of collateral deficiency. For the majority of the Bank’s impaired loans, the Bank will apply the fair value of collateral or use a measurement incorporating the present value of expected future cash flows discounted at the loan’s effective rate of interest. To determine fair value of collateral, collateral asset values securing an impaired loan are periodically evaluated. Maximum time of re-evaluation Large groups of homogeneous loans are collectively evaluated for impairment. Accordingly, the Bank does not separately identify individual consumer loans for impairment, unless such loans are the subject of a restructuring agreement due to financial difficulties of the borrower. For more information regarding the actual composition and classification of loans involved in the establishment of the allowance for loan loss, please see Note 4 provided here with the notes to consolidated financial statements.
Loans Held for Sale	Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate. Net unrealized losses, if any, are recognized in a valuation allowance by charges to income.
Servicing Assets	Servicing Assets Servicing assets are recognized as separate assets when rights are acquired through purchase or sale of financial assets. Capitalized servicing rights are reported in other assets and are amortized into noninterest expense in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets. Servicing assets are evaluated for impairment based upon the fair value of the rights as compared to amortized cost. Impairment is determined by stratifying rights by predominant characteristics, such as interest rates and terms. Fair value is determined using prices for similar assets with similar characteristics, when available, or based upon discounted cash flows using market based assumptions. Impairment is recognized through a valuation allowance for an individual stratum, to the extent that fair value is less than the capitalized amount for the stratum. Fees received for servicing loans owned by investors are based on a percentage of the outstanding monthly principal balance of such loans and are included in operating income as loan payments are received. Costs of servicing loans are charged to expense as incurred.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill results from business acquisitions and represents the excess of the purchase price over the fair value of acquired tangible assets and liabilities and identifiable intangible assets. Goodwill is assessed at least annually. If possible impairment is likely, the Bank will utilize the assistance of an independent third party for impairment and any such impairment is recognized in the period identified. The Bank considered the following qualitative factors to determine if impairment was likely: 1) the Bank continued to perform above peer and remains profitable with capital remaining strong, 2) the Bank had improved asset quality and does not see any change in the trend, 3) the Bank had strong liquidity and capital positions, 4) in quantitative testing done in 2016, the excess fair value of capital was $11.3 million or 10.4% over the carrying value and was over two and a half times the value of the goodwill being carried and 5) the Bank was unaware of any likely circumstances that would indicate the fair value of the entity would be greatly decreased in the near future. Therefore, the Bank concluded it is unlikely impairment of Goodwill has occurred from the goodwill established from the Bank’s acquisition which occurred on December 31, 2007. Other intangible assets consist of core deposit intangible assets arising from business acquisitions. They are initially measured at fair value and then are amortized on a straight line method over their estimated useful lives and evaluated for impairment.
Off Balance Sheet Instruments	Off Balance Sheet Instruments In the ordinary course of business, the Bank has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit and standby letters of credit. Such financial instruments are recorded when they are funded.
Foreclosed Real Estate	Foreclosed Real Estate Foreclosed real estate held for sale is carried at the lower of fair value minus estimated costs to sell, or cost. Costs of holding foreclosed real estate are charged to expense in the current period, except for significant property improvements, which are capitalized. Valuations are periodically performed by management and an allowance is established by a charge to non-interest non-interest
Bank Premises and Equipment	Bank Premises and Equipment Land is carried at cost. Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is based on the estimated useful lives of the various properties and is computed using straight line and accelerated methods. Costs for maintenance and repairs are charged to operations as incurred. Gains and losses on dispositions are included in current operations.
Federal Income Tax	Federal Income Tax The Company’s income tax expense consists of the following components: current and deferred. Current income tax expense reflects taxes to be paid or refunded for the current period by applying the provisions of the enacted tax law to the taxable income or excess of deductions over revenues. The Company determines deferred income taxes using the liability (or balance sheet) method. Under this method, the net deferred tax asset or liability is based on the tax effects of the differences between the book and tax bases of assets and liabilities, and enacted changes in tax rates and laws are recognized in the period in which they occur. Deferred income tax expense results from changes in deferred tax assets and liabilities between periods. Deferred tax assets are recognized if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more likely than not means a likelihood of more than 50 percent; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more-likely-than-not more-likely-than-not The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in tax expense. Based on management’s analysis, the Company did not have any uncertain tax positions as of December 31, 2016 and 2015. With a few exceptions, the Company is no longer subject to U.S. Federal, state or local examinations by tax authorities for years before 2013.
Earnings Per Share	Earnings Per Share Basic earnings per share represent income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. See Note 12 for additional information.
Stock-Based Compensation	Stock-Based Compensation The fair value of restricted common stock is their fair market value on the date of grant. The fair value of restricted stock is amortized as compensation expense on a straight-line basis over the vesting period of the grants. Compensation expense recognized is included in personnel expense in the consolidated statement of income.
Treasury Stock	Treasury Stock Common stock shares repurchased are recorded at market value on date of purchase.
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale The components of other comprehensive income (loss) and related tax effects are as follows: (In Thousands) 2016 2015 2014 Net unrealized gain (loss) on available-for-sale $ (2,721 ) $ 100 $ 1,158 Reclassification adjustment for gain on sale of available-for-sale (588 ) (451 ) (494 ) Net unrealized gains (losses) (3,309 ) (351 ) 664 Tax expense (benefit) (1,125 ) (119 ) 226 Other comprehensive income (loss) $ (2,184 ) $ (232 ) $ 438
Reclassification	Reclassification Certain amounts in the 2015 and 2014 consolidated financial statements have been reclassified to conform with the 2016 presentation. These reclassifications had no effect on net income.
Subsequent Events	Subsequent Events On January 20, 2017, the Company announced the authorization by its Board of Directors for the Company’s repurchase, either on the open market, or in privately negotiated transactions, of up to 200,000 shares of its outstanding common stock commencing January 20, 2017 and ending December 31, 2017.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2016, the FASB issued ASU No. 2016-01 Financial Instruments - Overall (Subtopic 825-10) 2016-01 2016-01 2016-01 In February 2016, the FASB issued ASU No. 2016-02 Leases (Topic 842).” 2016-02 2016-02 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 In June 2016, FASB issued 2016-13, available-for-sale The ASU is effective for SEC filers for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 (i.e., January 1, 2020, for calendar year entities). Early application will be permitted for all organizations for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is currently gathering information, reviewing possible vendors and has formed a committee to formulate the methodology to be used. Most importantly, the Company is gathering as much data as possible to enable review scenarios and determine which calculations will produce the most reliable results.

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Components of Other Comprehensive Income (Loss) and Related Tax Effects	The components of other comprehensive income (loss) and related tax effects are as follows: (In Thousands) 2016 2015 2014 Net unrealized gain (loss) on available-for-sale $ (2,721 ) $ 100 $ 1,158 Reclassification adjustment for gain on sale of available-for-sale (588 ) (451 ) (494 ) Net unrealized gains (losses) (3,309 ) (351 ) 664 Tax expense (benefit) (1,125 ) (119 ) 226 Other comprehensive income (loss) $ (2,184 ) $ (232 ) $ 438

Business Combination & Asset 29

Business Combination & Asset Purchase (Tables)	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Amortization Expense of Core Deposit Intangible Assets	Amortization expense of the core deposit intangible assets remaining is as follows: Hicksville Custar Total 2017 $ 78 $ 167 $ 245 2018 0 167 167 2019 0 167 167 2020 0 161 161 Total $ 78 $ 662 $ 740

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Fair Value of Securities with Gross Unrealized Gains and Losses	The amortized cost and fair value of securities, with gross unrealized gains and losses, follows: (In Thousands) 2016 Gross Gross Estimated Amortized Unrealized Unrealized Market Cost Gains Losses Value Available-for-Sale: U.S. Treasury $ 24,920 $ 1 $ (146 ) $ 24,775 U.S. Government agencies 84,266 3 (1,795 ) 82,474 Mortgage-backed securities 49,155 185 (879 ) 48,461 State and local governments 63,173 634 (990 ) 62,817 Total available-for-sale $ 221,514 $ 823 $ (3,810 ) $ 218,527 (In Thousands) 2015 Gross Gross Estimated Amortized Unrealized Unrealized Market Cost Gains Losses Value Available-for-Sale: U.S. Treasury $ 38,778 $ 36 $ (309 ) $ 38,505 U.S. Government agencies 99,000 55 (835 ) 98,220 Mortgage-backed securities 26,157 283 (116 ) 26,324 State and local governments 70,858 1,290 (82 ) 72,066 Total available-for-sale $ 234,793 $ 1,664 $ (1,342 ) $ 235,115
Gross Unrealized Losses, Aggregated by Investment Category and Length of Time	Information pertaining to securities with gross unrealized losses at December 31, 2016 and 2015, aggregated by investment category and length of time that individual securities have been in a continuous loss position follows: 2016 (In Thousands) (In Thousands) Gross Fair Gross Fair U.S. Treasury $ (146 ) $ 15,745 $ — $ — U.S. Government agencies (1,795 ) 77,471 — — Mortgage-backed securities (879 ) 36,474 — — State and local governments (983 ) 37,540 (7 ) 526 Total available-for-sales $ (3,803 ) $ 167,230 $ (7 ) $ 526 2015 (In Thousands) (In Thousands) Gross Fair Gross Fair U.S. Treasury $ (142 ) $ 23,241 $ (167 ) $ 10,195 U.S. Government agencies (635 ) 68,957 (200 ) 9,793 Mortgage-backed securities (60 ) 6,331 (56 ) 3,580 State and local governments (54 ) 7,920 (28 ) 1,725 Total available-for-sales $ (891 ) $ 106,449 $ (451 ) $ 25,293
Gross Realized Gains and Losses	gross realized gains and losses for the years ended December 31, as presented below: (In Thousands) 2016 2015 2014 Gross realized gains $ 598 $ 451 $ 638 Gross realized losses (10 ) — (144 ) Net realized gains $ 588 $ 451 $ 494 Tax expense related to net realized gains $ 200 $ 153 $ 168
Amortized Cost and Fair Value of Debt Securities, by Contractual Maturity	The amortized cost and fair value of debt securities at December 31, 2016, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. (In Thousands) Amortized Cost Fair Value One year or less $ 19,158 $ 19,231 After one year through five years 81,888 81,590 After five years through ten years 67,483 65,583 After ten years 3,830 3,662 Total $ 172,359 $ 170,066 Mortgage-backed securities 49,155 48,461 Total $ 221,514 $ 218,527

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loans	Loans (In Thousands) 2016 2015 Loans: Consumer Real Estate $ 87,273 $ 88,189 Agricultural Real Estate 63,391 58,525 Agricultural 84,563 82,654 Commercial Real Estate 377,481 322,762 Commercial and Industrial 109,256 100,125 Consumer 33,179 27,770 Industrial Development Bonds 5,732 6,491 $ 760,875 $ 686,516 Less: Net deferred loan fees and costs (726 ) (638 ) 760,149 685,878 Less: Allowance for loan losses (6,784 ) (6,057 ) Loans - Net $ 753,365 $ 679,821
Maturity Schedule by Major Category of Loans	The following is a maturity schedule by major category of loans at December 31, 2016: (In Thousands) Within After One After Total Consumer Real Estate $ 2,900 $ 12,258 $ 72,115 $ 87,273 Agricultural Real Estate 911 3,156 59,324 63,391 Agricultural 51,411 22,771 10,381 84,563 Commercial Real Estate 7,636 105,377 264,468 377,481 Commercial and Industrial 49,757 35,400 24,099 109,256 Consumer 5,880 20,212 7,087 33,179 Industrial Development Bonds 1,031 85 4,616 5,732 $ 119,526 $ 199,259 $ 442,090 $ 760,875
Distribution of Fixed Rate Loans and Variable Rate Loans by Major Loan Category	The distribution of fixed rate loans and variable rate loans by major loan category is as follows as of December 31, 2016: (In Thousands) Fixed Variable Consumer Real Estate $ 50,138 $ 37,135 Agricultural Real Estate 47,109 16,282 Agricultural 41,821 42,742 Commercial Real Estate 257,805 119,676 Commercial and Industrial 52,616 56,640 Consumer 28,544 4,635 Industrial Development Bonds 5,732 —
Contractual Aging of the Recorded Investment in Past Due Loans by Portfolio Classification of Loans	The following table represents the contractual aging of the recorded investment in past due loans by portfolio classification of loans as of December 31, 2016 and 2015, net of deferred loan fees and costs: December 31, 2016 30-59 Days 60-89 Days Greater Than Total Current Total Recorded Consumer Real Estate $ 882 $ 15 $ 507 $ 1,404 $ 85,508 $ 86,912 $ — Agricultural Real Estate 12 — 132 144 63,208 63,352 — Agricultural 101 — — 101 84,591 84,692 — Commercial Real Estate 60 — — 60 376,827 376,887 — Commercial and Industrial — — — — 115,093 115,093 — Consumer 29 6 — 35 33,178 33,213 — Total $ 1,084 $ 21 $ 639 $ 1,744 $ 758,405 $ 760,149 $ — December 31, 2015 30-59 Days 60-89 Days Greater Than Total Past Current Total Recorded Consumer Real Estate $ 303 $ 47 $ 357 $ 707 $ 87,240 $ 87,947 $ — Agricultural Real Estate — — 162 162 58,301 58,463 — Agricultural — 145 — 145 82,617 82,762 — Commercial Real Estate 236 — 841 1,077 321,153 322,230 — Commercial and Industrial 51 — 20 71 106,618 106,689 — Consumer 19 9 — 28 27,759 27,787 — Total $ 609 $ 201 $ 1,380 $ 2,190 $ 683,688 $ 685,878 $ —
Recorded Investment in Nonaccrual Loans by Portfolio Class of Loans	The following table presents the recorded investment in nonaccrual loans by portfolio class of loans as of December 31, 2016 and December 31, 2015: (In Thousands) 2016 2015 Consumer Real Estate $ 1,091 $ 1,155 Agricultural Real Estate 132 162 Agriculture — — Commercial Real Estate — 484 Commercial and Industrial 161 202 Consumer — 38 Total $ 1,384 $ 2,041
Risk Category of Loans by Portfolio Class	The following table represents the risk category of loans by portfolio class, net of deferred fees, based on the most recent analysis performed as of the time periods shown of December 31, 2016 and December 31, 2015. (In Thousands) Agricultural Real Estate Agricultural Commercial Real Estate Commercial and Industrial Development 2016 2015 2016 2015 2016 2015 2016 2015 2016 2015 1-2 $ 4,999 $ 5,841 $ 7,334 $ 12,025 $ 677 $ 597 $ 10,060 $ 261 $ — $ — 3 16,660 16,593 31,397 21,247 27,858 24,264 14,064 22,300 2,640 3,100 4 40,224 35,475 44,560 49,220 333,523 293,381 83,100 76,855 3,092 3,391 5 1,209 192 1,234 250 8,321 1,738 1,379 57 — — 6 260 362 167 — 6,508 1,828 641 543 — — 7 — — — 20 — 422 117 182 — — 8 — — — — — — — — — — Total $ 63,352 $ 58,463 $ 84,692 $ 82,762 $ 376,887 $ 322,230 $ 109,361 $ 100,198 $ 5,732 $ 6,491
Recorded Investment for Consumer Loans, Credit Quality based on Status of Loan and Payment Activity	The following tables present the recorded investment in those classes based on payment activity and assigned risk grading as of December 31, 2016 and December 31, 2015. (In Thousands) Consumer Real Estate 2016 2015 Grade Pass $ 86,361 $ 87,292 Special mention (5) 25 48 Substandard (6) 368 332 Doubtful (7) 158 275 Total $ 86,912 $ 87,947 Consumer - Credit Card Consumer - Other 2016 2015 2016 2015 Performing $ 4,061 $ 3,901 $ 29,120 $ 23,863 Nonperforming — — 32 23 Total, net of deferred fees $ 4,061 $ 3,901 $ 29,152 $ 23,886
Schedule of Impaired Loans	Information about impaired loans as of and for the years ended December 31, 2016 and 2015 are as follows: (In Thousands) 2016 2015 Impaired loans without a valuation allowance $ 1,141 $ 1,257 Impaired loans with a valuation allowance 711 879 Total impaired loans $ 1,852 $ 2,136 Valuation allowance related to impaired loans $ 135 $ 330 Total non-accrual $ 1,384 $ 2,041 Total loans past-due $ — $ — (In Thousands) 2016 2015 2014 Average investment in impaired loans $ 1,802 $ 2,509 $ 1,929 Interest income recognized on impaired loans $ 64 $ 96 $ 87 Interest income recognized on a cash basis on impaired loans $ 27 $ 60 $ 51
Impaired Loans Classified as Troubled Debt Restructured	The following table represents the years ended December 31, 2016 and 2015. December 31, 2016 Troubled Debt Restructurings Number of Pre- Post- December 31, 2015 Number of Pre- Post- Commercial Real Estate 1 $ 138 $ 138 Commercial Real Estate 1 $ 528 $ 430 Commercial and Industrial 0 — — Commercial and Industrial 1 25 24
Loans Individually Evaluated for Impairment by Portfolio Class of Loans	The following tables present loans individually evaluated for impairment by portfolio class of loans as of December 31, 2016 and 2015: (In Thousands) Recorded Unpaid Related Average Interest Interest 2016 With no related allowance recorded: Consumer Real Estate $ 1,009 $ 1,009 $ — $ 101 $ 16 $ 4 Agricultural Real Estate 132 132 — 147 — — Agricultural — — — — — — Commercial Real Estate — — — 427 24 23 Commercial and Industrial — — — 337 — — Consumer — — — — — — With a specific allowance recorded: Consumer Real Estate 94 94 34 344 — — Agricultural Real Estate — — — 9 — — Agricultural — — — — — — Commercial Real Estate 501 501 66 191 — — Commercial and Industrial 116 116 35 246 24 — Consumer — — — — — — Totals: Consumer Real Estate $ 1,103 $ 1,103 $ 34 $ 445 $ 16 $ 4 Agricultural Real Estate $ 132 $ 132 $ — $ 156 $ — $ — Agricultural $ — $ — $ — $ — $ — $ — Commercial Real Estate $ 501 $ 501 $ 66 $ 618 $ 24 $ 23 Commercial and Industrial $ 116 $ 116 $ 35 $ 583 $ 24 $ — Consumer $ — $ — $ — $ — $ — $ — (In Thousands) Recorded Unpaid Related Average Interest Interest 2015 With no related allowance recorded: Consumer Real Estate $ 156 $ 156 $ — $ 158 $ 5 $ 5 Agricultural Real Estate 63 63 — 120 — — Agricultural — — — — — — Commercial Real Estate 1,038 1,038 — 421 27 27 Commercial and Industrial — — — 429 27 — Consumer — — — — — — With a specific allowance recorded: Consumer Real Estate 275 323 64 181 7 6 Agricultural Real Estate — — — — — — Agricultural — — — — — — Commercial Real Estate 422 422 152 907 30 22 Commercial and Industrial 182 182 114 291 — — Consumer — — — 2 — — Totals: Consumer Real Estate $ 431 $ 479 $ 64 $ 339 $ 12 $ 11 Agricultural Real Estate $ 63 $ 63 $ — $ 120 $ — $ — Agricultural $ — $ — $ — $ — $ — $ — Commercial Real Estate $ 1,460 $ 1,460 $ 152 $ 1,328 $ 57 $ 49 Commercial and Industrial $ 182 $ 182 $ 114 $ 720 $ 27 $ — Consumer $ — $ — $ — $ 2 $ — $ —
Summary of Activities in Allowance for Credit Losses	The following is an analysis of the allowance for credit losses for the years ended December 31: (In Thousands) 2016 2015 2014 Allowance for Loan Losses Balance at beginning of year $ 6,057 $ 5,905 $ 5,194 Provision for loan loss 1,121 625 1,191 Loans charged off (550 ) (1,030 ) (778 ) Recoveries 156 557 298 Balance at ending of year $ 6,784 $ 6,057 $ 5,905 Allowance for Unfunded Loan Commitments & Letters of Credit $ 217 $ 208 $ 207 Total Allowance for Credit Losses $ 7,001 $ 6,265 $ 6,112
Analysis of Allowance for Credit Losses	Additional analysis related to the allowance for credit losses as of December 31, 2016 and 2015 is as follows: (In Thousands) Consumer Agricultural Agricultural Commercial Commercial Consumer Unfunded Unallocated Total 2016 ALLOWANCE FOR CREDIT LOSSES: Beginning balance $ 338 $ 211 $ 582 $ 2,516 $ 1,229 $ 337 $ 208 $ 844 $ 6,265 Charge Offs (106 ) — (21 ) (93 ) (20 ) (310 ) — — (550 ) Recoveries 28 — 10 20 11 87 — — 156 Provision (Credit) 56 30 45 807 98 280 — (195 ) 1,121 Other Non-interest — — — — — — 9 — 9 Ending Balance $ 316 $ 241 $ 616 $ 3,250 $ 1,318 $ 394 $ 217 $ 649 $ 7,001 Ending balance: individually evaluated for impairment $ 34 $ — $ — $ 66 $ 35 $ — $ — $ — $ 135 Ending balance: collectively evaluated for impairment $ 282 $ 241 $ 616 $ 3,184 $ 1,283 $ 394 $ 217 $ 649 $ 6,866 Ending balance: loans acquired with deteriorated credit quality $ 1 $ — $ — $ — $ — $ — $ — $ — $ 1 FINANCING RECEIVABLES: Ending balance $ 86,912 $ 63,352 $ 84,692 $ 376,887 $ 115,093 $ 33,213 $ — $ — $ 760,149 Ending balance: individually evaluated for impairment $ 1,103 $ 132 $ — $ 501 $ 116 $ — $ — $ — $ 1,852 Ending balance: collectively evaluated for impairment $ 85,809 $ 63,220 $ 84,692 $ 376,386 $ 114,977 $ 33,213 $ — $ — $ 758,297 Ending balance: loans acquired with deteriorated credit quality $ 200 $ — $ — $ — $ — $ — $ — $ — $ 200 (In Thousands) Consumer Agricultural Agricultural Commercial Commercial Consumer Unfunded Unallocated Total 2015 ALLOWANCE FOR CREDIT LOSSES: Beginning balance $ 537 $ 184 $ 547 $ 2,367 $ 1,421 $ 323 $ 207 $ 526 $ 6,112 Charge Offs (38 ) — — (143 ) (536 ) (313 ) — — (1,030 ) Recoveries 41 — 64 204 91 157 — — 557 Provision (Credit) (202 ) 27 (29 ) 88 253 170 — 318 625 Other Non-interest — — — — — — 1 — 1 Ending Balance $ 338 $ 211 $ 582 $ 2,516 $ 1,229 $ 337 $ 208 $ 844 $ 6,265 Ending balance: individually evaluated for impairment $ 64 $ — $ — $ 152 $ 114 $ — $ — $ — $ 330 Ending balance: collectively evaluated for impairment $ 274 $ 211 $ 582 $ 2,364 $ 1,115 $ 337 $ 208 $ 844 $ 5,935 Ending balance: loans acquired with deteriorated credit quality $ 1 $ — $ — $ — $ — $ — $ — $ — $ 1 FINANCING RECEIVABLES: Ending balance $ 87,947 $ 58,463 $ 82,762 $ 322,230 $ 106,689 $ 27,787 $ — $ — $ 685,878 Ending balance: individually evaluated for impairment $ 431 $ 63 $ — $ 1,460 $ 182 $ — $ — $ — $ 2,136 Ending balance: collectively evaluated for impairment $ 87,516 $ 58,400 $ 82,762 $ 320,770 $ 106,507 $ 27,787 $ — $ — $ 683,742 Ending balance: loans acquired with deteriorated credit quality $ 507 $ — $ — $ — $ — $ — $ — $ — $ 507

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Major Categories of Banking Premises and Equipment and Accumulated Depreciation	The major categories of banking premises and equipment and accumulated depreciation at December 31 are summarized below: (In Thousands) 2016 2015 Land $ 5,647 $ 5,647 Buildings (useful life 15-39 23,526 21,943 Construction in Progress — 329 Furnishings (useful life 3-15 12,673 11,783 41,846 39,702 Less: Accumulated depreciation (20,389 ) (19,115 ) Premises and Equipment (Net) $ 21,457 $ 20,587

Servicing (Tables)

Servicing (Tables)	12 Months Ended
	Dec. 31, 2016
Transfers and Servicing [Abstract]
Summary of Mortgage Servicing Rights Capitalized and Amortized	The following summarizes mortgage servicing rights capitalized and amortized during each year: (In Thousands) 2016 2015 Beginning Year $ 2,056 $ 2,023 Capitalized Additions 555 407 Amortization (419 ) (374 ) Valuation Allowance — — End of Year $ 2,192 $ 2,056

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Time Deposits	Time deposits as of December 31 consist of the following: (In Thousands) 2016 2015 Time deposits under $100,000 $ 98,890 $ 103,424 Time deposits of $100,000 or more 99,940 80,861 $ 198,830 $ 184,285
Scheduled Maturities for Time Deposits	At December 31, 2016 the scheduled maturities for time deposits are as follows: (In Thousands) 2017 $ 79,407 2018 46,687 2019 25,876 2020 20,478 2021 25,559 thereafter 823 $ 198,830

Federal Funds Purchased and S35

Federal Funds Purchased and Securities Sold Under Agreement to Repurchase (Tables)	12 Months Ended
	Dec. 31, 2016
Brokers and Dealers [Abstract]
Daily Securities under Agreement to Repurchase	The table below presents the daily securities sold under agreement to repurchase and the term repurchase agreements. It does not include the Bank’s Federal Funds purchased. Daily Securities Sold Under Agreement to Repurchase Amount Weighted Maximum Amount Approximate Approximate 2016 $ 32,814 0.20 % $ 43,929 $ 39,928 0.10 % 2015 $ 39,691 0.08 % $ 46,564 $ 39,371 0.08 % Term CD’s Sold Under Agreement to Repurchase Amount Weighted Maximum Amount Approximate Approximate 2016 $ 20,510 1.96 % $ 20,510 $ 19,562 1.88 % 2015 $ 17,124 2.00 % $ 17,961 $ 17,294 1.62 %
Schedule of Remaining Contractual Maturity in Repurchase Agreements	The table below shows the remaining contractual maturity in the repurchase agreements December 31, 2016. December 31, 2016 Remaining Contratual Maturity of the Agreements Overnight & Up to 30 days 30-90 days Greater Than Total Federal funds Purchased $ 17,000 $ — $ — $ — $ 17,000 Repurchase Agreements US Treasury & agency securities 32,814 — — 20,510 53,324 Total $ 49,814 $ — $ — $ 20,510 $ 70,324

Federal Home Loan Bank Advanc36

Federal Home Loan Bank Advances (Tables)	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Summary of Future Obligations of FHLB Advances	Future obligations of the advances are as follows at December 31, 2016: (In Thousands) 2017 5,000 2018 5,000 $ 10,000

Federal Income Taxes (Tables)

Federal Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Components of Income Tax Expense (Benefit)	The components of income tax expense (benefit) for the years ended December 31 are as follows: (In Thousands) 2016 2015 2014 Current: Federal $ 4,601 $ 3,941 $ 3,837 Deferred: Federal 55 (122 ) 34 $ 4,656 $ 3,819 $ 3,871
Reconciliation of the Statutory Federal Income Tax Rate to the Effective Tax Rate	The following is a reconciliation of the statutory federal income tax rate to the effective tax rate (In Thousands) 2016 2015 2014 Income tax at statutory rates $ 5,521 $ 4,792 $ 4,596 Decrease resulting from: Tax exempt interest (468 ) (554 ) (634 ) Change in prior estimates and other (397 ) (419 ) (91 ) $ 4,656 $ 3,819 $ 3,871
Components of Deferred Tax Assets and Liabilities	Deferred tax assets and liabilities at December 31 are comprised of the following: 2016 2015 Deferred Tax Assets: Allowance for loan losses $ 2,326 $ 2,080 Other 553 528 Net unrealized gain on available-for-sale 1,016 — Total deferred tax assets 3,895 2,608 Deferred Tax Liabilities: Accreted discounts on bonds 83 100 FHLB stock dividends 744 745 Mortgage servicing rights 752 706 Other 1,745 1,389 Net unrealized gain on available-for-sale — 109 Total deferred tax liabilities 3,324 3,049 Net Deferred Tax Asset (Liability) $ 571 $ (441 )

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Activity of Restricted Stock Awards	The following table summarizes the activity of restricted stock awards as of December 31: Year Ended December 31, 2016 2015 2014 Number of Weighted Number of Weighted Number of Weighted Beginning of period 38,995 24.92 33,390 22.77 31,890 20.38 Granted 16,150 32.02 16,000 26.35 13,250 25.50 Vested (11,222 ) 31.72 (10,295 ) 26.33 (10,970 ) 25.39 Forfeited (773 ) 31.54 (100 ) 26.07 (780 ) 24.97 Nonvested, end of period 43,150 28.20 38,995 24.92 33,390 22.77

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Calculation of Basic Earnings Per Share	The table below presents basic and diluted earnings per share for the years ended December 31, 2016, 2015, and 2014. Year Ended December 31, December 31, December 31, Earnings per share Net income $ 11,664 $ 10,340 $ 9,646 Less: distributed earnings allocated to participating securities (37 ) (31 ) (27 ) Less: undistributed earnings allocated to participating securities (64 ) (47 ) (40 ) Net earnings available to common shareholders $ 11,563 $ 10,262 $ 9,579 Weighted average common shares outstanding including participating securities 4,612,115 4,617,058 4,628,178 Less: average unvested resticted shares (39,982 ) (35,000 ) (32,278 ) Weighted average common shares outstanding 4,572,133 4,582,058 4,595,900 Basic and diluted earnings per share $ 2.53 $ 2.24 $ 2.08

Off Balance Sheet Activities (T

Off Balance Sheet Activities (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Outstanding Financial Instruments Whose Contract Amounts Represent Credit Risk	At December 31, 2016 and 2015, the following financial instruments were outstanding whose contract amounts represent credit risk: (In Thousands) 2016 2015 Commitments to extend credit $ 223,534 $ 246,321 Credit card arrangements 18,316 16,100 Standby letters of credit 875 770

Minimum Regulatory Capital Re41

Minimum Regulatory Capital Requirements (Tables)	12 Months Ended
	Dec. 31, 2016
Banking and Thrift [Abstract]
Summary of Bank's Actual and Required Capital Amounts and Ratios	The Company and the Bank’s actual and required capital amounts and ratios as of December 31, 2016 are as follows: Actual Minimum Capital Required to (000’s) Ratio (000’s) Ratio (000’s) Ratio As of December 31, 2016 Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 123,031 14.46 % $ 38,296 4.50 % N/A N/A Farmers & Merchants State Bank 100,999 11.91 % 38,156 4.50 % $ 55,115 6.50 % Total Risk-Based Capital (to Risk Weighted Assets) Consoildated 130,032 15.28 % 68,081 8.00 % N/A N/A Farmers & Merchants State Bank 108,000 12.73 % 67,833 8.00 % 84,792 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated 123,031 14.46 % 51,061 6.00 % N/A N/A Farmers & Merchants State Bank 100,999 11.91 % 50,875 6.00 % 67,833 8.00 % Tier 1 Leverage Capital (to Adjusted Total Assets) Consolidated 123,031 11.77 % 41,826 4.00 % N/A N/A Farmers & Merchants State Bank 100,999 9.75 % 41,425 4.00 % 51,181 5.00 % The following table presents the Company and the Bank’s actual and required capital amounts and ratios as of December 31, 2015. Actual Minimum Capital Required to (000’s) Ratio (000’s) Ratio (000’s) Ratio As of December 31, 2015 Common Equity Tier 1 Capital (to Risk Weighted Assets) Consolidated $ 115,386 14.18 % $ 36,626 4.50 % N/A N/A Farmers & Merchants State Bank 96,231 11.87 % 36,494 4.50 % $ 52,714 6.50 % Total Risk-Based Capital (to Risk Weighted Assets) Consolidated 121,651 14.95 % 65,113 8.00 % N/A N/A Farmers & Merchants State Bank 102,496 12.64 % 64,879 8.00 % 81,099 10.00 % Tier 1 Capital (to Risk Weighted Assets) Consolidated 115,386 14.18 % 48,834 6.00 % N/A N/A Farmers & Merchants State Bank 96,231 11.87 % 48,659 6.00 % 64,879 8.00 % Tier 1 Leverage Capital (to Adjusted Total Assets) Consolidated 115,386 11.91 % 38,752 4.00 % N/A N/A Farmers & Merchants State Bank 96,231 10.12 % 38,019 4.00 % 47,524 5.00 %

Fair Value of Financial Instr42

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Estimated Fair Values and Related Carrying or Notional Amounts	The estimated fair values, and related carrying or notional amounts, for on and off-balance (In Thousands) December 2016 December 2015 Carrying Fair Level 1 Level 2 Level 3 Carrying Fair Level 1 Level 2 Level 3 Financial Assets: Cash and Cash Equivalents $ 28,322 $ 28,322 $ 28,322 $ — $ — $ 22,018 $ 22,018 $ 22,018 $ — $ — Interest-bearing time deposits 1,915 1,918 — 1,918 — — — — — — Securities - available for sale 218,527 218,527 24,775 192,334 1,418 235,115 235,115 38,505 189,258 7,352 Other Securities 3,717 3,717 — — 3,717 3,717 3,717 — — 3,717 Loans, net 753,365 755,412 — — 755,412 679,821 683,332 — — 683,332 Interest receivable 3,880 3,880 — — 3,880 3,589 3,589 — — 3,589 Financial Liabilities: Interest bearing Deposits $ 456,983 $ 456,983 $ — $ — $ 456,983 $ 415,942 $ 415,942 $ — $ — $ 415,942 Non-interest 186,390 186,390 — 186,390 — 171,112 171,112 — 171,112 — Time Deposits 198,830 199,658 — — 199,658 184,285 184,308 — — 184,308 Total Deposits $ 842,203 $ 843,031 $ — $ 186,390 $ 656,641 $ 771,339 $ 771,362 $ — $ 171,112 $ 600,250 Federal Funds purchased and Securities sold under agreement to repurchase 70,324 70,324 — — 70,324 78,815 78,815 — — 78,815 Federal Home Loan Bank advances 10,000 10,041 — — 10,041 10,000 9,986 — — 9,986 Interest payable 256 256 — — 256 185 185 — — 185
Financial Assets Measured at Fair Value on Recurring Basis	The following table summarizes financial assets measured at fair value on a recurring basis as of December 31, 2016 and December 31, 2015 segregated by level or the valuation inputs within the fair value hierarchy utilized to measure fair value. Assest and Liabilities Measured at Fair Value on a Recurring Basis (In Thousands) December 31, 2016 Quoted Prices in Significant Significant Assets-(Securities Available for Sale) U.S. Treasury $ 24,775 $ — $ — U.S. Government agencies — 82,474 — Mortgage-backed securities — 48,461 — State and local governments — 61,399 1,418 Total Securities Available for Sale $ 24,775 $ 192,334 $ 1,418 December 31, 2015 Quoted Prices in Significant Significant Assets-(Securities Available for Sale) U.S. Treasury $ 38,505 $ — $ — U.S. Government agencies — 98,220 — Mortgage-backed securities — 26,324 — State and local governments — 64,714 7,352 Total Securities Available for Sale $ 38,505 $ 189,258 $ 7,352
Changes in the Level 3 Fair-Value Category of Which Unobservable Inputs	(In Thousands) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) State and Local Tax-Exempt State and Local State and Local Balance at January 1, 2016 $ 5,904 $ 1,448 $ 7,352 Change in Market Value (264 ) (30 ) (294 ) Purchases — — — Sales — — — Payments & Maturities (5,640 ) — (5,640 ) Balance at December 31, 2016 $ — $ 1,418 $ 1,418 (In Thousands) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) State and Local State and Local State and Local Governments Governments Governments Tax-Exempt Taxable Total Balance at January 1, 2015 $ 6,638 $ 1,293 $ 7,931 Change in Market Value (259 ) 155 (104 ) Purchases — — — Sales — — — Payments & Maturities (475 ) — (475 ) Balance at December 31, 2015 $ 5,904 $ 1,448 $ 7,352
Collateral Dependent Impaired Loans and Other Real Estate	The following table presents collateral dependent impaired loans and other real estate owned as recorded at fair value: Assets Measured at Fair Value on a Nonrecurring Basis at December 31, 2016 Quoted Prices in Change in Markets for Significant Significant fair value for Balance at Identical Observable Inputs Unobservable Inputs twelve-month period ($ in Thousands) December 31, 2016 Assets (Level 1) (Level 2) (Level 3) ended Dec. 31, 2016 Collateral dependent impaired loans $ 576 $ — $ — $ 576 $ (1,564 ) Other real estate owned - residential 144 — — 144 (1 ) Total change in fair value $ (1,565 ) Assets Measured at Fair Value on a Nonrecurring Basis at December 31, 2015 Quoted Prices in Change in Markets for Significant Significant fair value for Balance at Identical Observable Inputs Unobservable Inputs twelve-month period ($ in Thousands) December 31, 2015 Assets (Level 1) (Level 2) (Level 3) ended Dec. 31, 2015 Collateral dependent impaired loans $ 549 $ — $ — $ 549 $ (17 ) Other real estate owned - commercial 216 — — 216 (32 ) Total change in fair value $ (49 )
Quantitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements	The following table presents quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements: Fair Value at Range December 31, 2016 Valuation Technique Unobservable Inputs Average) State and local government $ 1,418 Discounted Cash Flow Credit strength of underlying project or entity / Discount rate 0-5 (3.92 % %) Collateral dependent Impaired Loans 576 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0-50 (18.92 % %) Other real estate owned - residential 144 Appraisals Discount to reflect current market 0-20 (0.51 % %) Fair Value at Range December 31, 2015 Valuation Technique Unobservable Inputs Average) State and local government $ 7,352 Discounted Cash Flow Credit strength of underlying project or entity / Discount rate 0-5 (2.57 % %) Collateral dependent Impaired Loans 549 Collateral based measurements Discount to reflect current market conditions and ultimate collectability 0-50 (37.46 % %) Other real estate owned - commercial 216 Appraisals Discount to reflect current market 0-20 (12.28 % %)

Condensed Financial Statement43

Condensed Financial Statements of Parent Company (Tables)	12 Months Ended
	Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Balance Sheets	Balance Sheets (In Thousands) 2016 2015 Assets Cash $ 1,435 $ 787 Related party receivables: Dividends & Accounts receivable from subsidiaries 1,842 1,730 Accrued interest receivable Municipals 63 63 Securities - Municipals 17,290 16,388 Investment in subsidiaries 106,044 102,178 Total Assets $ 126,674 $ 121,146 Liabilities Accrued expenses $ 44 $ 42 Dividends payable 1,053 1,007 Total Liabilities 1,097 1,049 Stockholders’ Equity 125,577 120,097 Total Liabilities and Stockholders’ Equity $ 126,674 $ 121,146
Schedule of Condensed Income and Comprehensive Income Statements	Statements of Income and Comprehensive Income (In Thousands) 2016 2015 2014 Income Dividends from subsidiaries $ 6,000 $ 6,220 $ 5,725 Interest — — — Interest Municipals 272 219 215 Gain on sales of available-for-sale — 124 — Total Income 6,272 6,563 5,940 Operating Expenses 681 677 577 Income Before Income Taxes and Equity in Undistributed Earnings of Subsidiaries 5,591 5,886 5,363 Income Taxes (Benefit) (238 ) (188 ) (196 ) 5,829 6,074 5,559 Equity in undistributed earnings of Subsidiaries 5,835 4,266 4,087 Net Income $ 11,664 $ 10,340 $ 9,646 Other Comprehensive Income (Loss): Unrealized gains (losses) on securities (2,184 ) (232 ) 438 Comprehensive Income $ 9,480 $ 10,108 $ 10,084
Schedule of Condensed Cash Flow Statement	(In Thousands) 2016 2015 2014 Cash Flows from Operating Activities Net income $ 11,664 $ 10,340 $ 9,646 Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities: Equity in undistributed net income (Distributions in excess earnings) of subsidiaries (5,835 ) (4,266 ) (4,087 ) Accretion & Amortization of Securities 179 152 146 Gain on Sale of Available for Sale Securities — (124 ) — Changes in Assets and Liabilities: Dividends receivable — 475 (1,025 ) Other Assets and Liabilities 355 156 (12 ) Net Cash Provided by Operating Activities 6,363 6,733 4,668 Cash Flows from Investing Activities Investing in Subsidiaries — — (250 ) Activitiy in available for sale securities: Maturities, prepayments and calls 1,485 1,000 — Sales — 6,282 — Purchases (2,891 ) (8,784 ) — Repayment of Subsidiary Subordinated Debt — — — Net Cash used in Investing Activities (1,406 ) (1,502 ) (250 ) Cash Flows from Financing Activities Payment of dividends (4,115 ) (3,943 ) (3,862 ) Purchase of Treasury Stock (194 ) (803 ) (576 ) Net Cash Used in Financing Activities (4,309 ) (4,746 ) (4,438 ) Net Change in Cash and Cash Equivalents 648 485 (20 ) Cash and Cash Equivalents Beginning of year 787 302 322 Cash and Cash Equivalents End of year $ 1,435 $ 787 $ 302

Quarterly Financial Data (Table

Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Financial Data	(000’s omitted except per share data) Mar 31 June 30 Sep 30 Dec 31 Summary of Income: Interest income $ 9,004 $ 9,387 $ 9,590 $ 9,746 Interest expense 996 1,047 1,099 1,081 Net Interest Income 8,008 8,340 8,491 8,665 Provision for loan loss 277 339 308 197 Net interest income after provision of loan loss 7,731 8,001 8,183 8,468 Other income (expense) (4,316 ) (3,773 ) (4,007 ) (3,967 ) Net income before income taxes 3,415 4,228 4,176 4,501 Income taxes 934 1,254 1,161 1,307 Net income $ 2,481 $ 2,974 $ 3,015 $ 3,194 Earnings per Common Share $ 0.54 $ 0.65 $ 0.65 $ 0.70 Average common shares outstanding 4,609,226 4,605,534 4,612,766 4,620,831 Quarter Ended in 2015 Mar 31 June 30 Sep 30 Dec 31 Summary of Income: Interest income $ 8,184 $ 8,289 $ 8,444 $ 8,733 Interest expense 858 871 935 923 Net Interest Income 7,326 7,418 7,509 7,810 Provision for loan loss 114 183 243 85 Net interest income after provision for loan loss 7,212 7,235 7,266 7,725 Other income (expense) (4,008 ) (3,682 ) (3,685 ) (3,904 ) Net income before income taxes 3,204 3,553 3,581 3,821 Income taxes 853 956 961 1,049 Net income $ 2,351 $ 2,597 $ 2,620 $ 2,772 Earnings per common share $ 0.51 $ 0.56 $ 0.57 $ 0.60 Average common shares outstanding 4,623,322 4,608,453 4,615,379 4,621,122

Summary of Significant Accoun45

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)Multiplier	Jan. 20, 2017shares	Dec. 31, 2015USD ($)
Summary Of Significant Accounting Policies [Line Items]
Period for federal funds purchased and sold	1 day
Average aggregate reserve	$ 5,000,000		$ 6,500,000
Loan non-accrual classification period	90 days
Days to charged consumer loans to the value of the collateral	90 days
Maximum time for re-evaluation (in months)	12 months
Re-evaluation period for real estate	2 years
Excess fair value of goodwill amount	$ 11,300,000
Percentage of carrying value for excess fair value	10.40%
Factor multiplication of value of goodwill | Multiplier	2.5
Other real estate owned	$ 774,000		$ 1,200,000
Percentage of likelihood of realization of recognized tax benefit, minimum	50.00%
Amount of reclassification effect	$ 0
Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | shares		200,000
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Maturity period of cash equivalents	3 months

Summary of Significant Accoun46

Summary of Significant Accounting Policies - Components of Other Comprehensive Income (Loss) and Related Tax Effects (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract]
Net unrealized gain (loss) on available-for-sale securities	$ (2,721)	$ 100	$ 1,158
Reclassification adjustment for gain on sale of available-for-sale securities	(588)	(451)	(494)
Net unrealized gain (loss) on available for sale securities	(3,309)	(351)	664
Tax expense (benefit)	(1,125)	(119)	226
Other comprehensive income (loss)	$ (2,184)	$ (232)	$ 438

Business Combination & Asset 47

Business Combination & Asset Purchase - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jul. 09, 2010
Business Acquisition [Line Items]
Recognition of core deposit intangible asset with acquired purchase	$ 2,260				$ 1,170
Number of years amortized over an estimated remaining economic useful life of deposits	7 years
Amortization expense	$ 323	$ 323	$ 480
Knisely [Member]
Business Acquisition [Line Items]
Recognition of core deposit intangible asset with acquired purchase			$ 1,100
Hicksville [Member]
Business Acquisition [Line Items]
Recognition of core deposit intangible asset with acquired purchase					$ 1,090
Custar [Member]
Business Acquisition [Line Items]
Recognition of core deposit intangible asset with acquired purchase				$ 1,170

Business Combination & Asset 48

Business Combination & Asset Purchase - Amortization Expense of Core Deposit Intangible Assets (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
2,017	$ 245
2,018	167
2,019	167
2,020	161
Total	740
Hicksville [Member]
Business Acquisition [Line Items]
2,017	78
2,018	0
2,019	0
2,020	0
Total	78
Custar [Member]
Business Acquisition [Line Items]
2,017	167
2,018	167
2,019	167
2,020	161
Total	$ 662

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities with Gross Unrealized Gains and Losses (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 221,514	$ 234,793
Gross Unrealized Gains	823	1,664
Gross Unrealized Losses	(3,810)	(1,342)
Fair Value	218,527	235,115
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	24,920	38,778
Gross Unrealized Gains	1	36
Gross Unrealized Losses	(146)	(309)
Fair Value	24,775	38,505
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	84,266	99,000
Gross Unrealized Gains	3	55
Gross Unrealized Losses	(1,795)	(835)
Fair Value	82,474	98,220
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	49,155	26,157
Gross Unrealized Gains	185	283
Gross Unrealized Losses	(879)	(116)
Fair Value	48,461	26,324
State and Local Governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	63,173	70,858
Gross Unrealized Gains	634	1,290
Gross Unrealized Losses	(990)	(82)
Fair Value	$ 62,817	$ 72,066

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Realized gains and losses on sales	$ 85.7	$ 47	$ 57.9
Investments with a carrying value and fair value	$ 129.4	$ 189.3
Minimum [Member]
Schedule of Available-for-sale Securities [Line Items]
Underwater security	10 years
Loss position existed	3 years

Securities - Gross Unrealized L

Securities - Gross Unrealized Losses, Aggregated by Investment Category and Length of Time (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	$ (3,803)	$ (891)
Fair Value, Less Than Twelve Months	167,230	106,449
Gross Unrealized Losses, Twelve Months and Over	(7)	(451)
Fair Value, Twelve Months and Over	526	25,293
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	(146)	(142)
Fair Value, Less Than Twelve Months	15,745	23,241
Gross Unrealized Losses, Twelve Months and Over		(167)
Fair Value, Twelve Months and Over		10,195
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	(1,795)	(635)
Fair Value, Less Than Twelve Months	77,471	68,957
Gross Unrealized Losses, Twelve Months and Over		(200)
Fair Value, Twelve Months and Over		9,793
Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	(879)	(60)
Fair Value, Less Than Twelve Months	36,474	6,331
Gross Unrealized Losses, Twelve Months and Over		(56)
Fair Value, Twelve Months and Over		3,580
State and Local Governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses, Less Than Twelve Months	(983)	(54)
Fair Value, Less Than Twelve Months	37,540	7,920
Gross Unrealized Losses, Twelve Months and Over	(7)	(28)
Fair Value, Twelve Months and Over	$ 526	$ 1,725

Securities - Gross Realized Gai

Securities - Gross Realized Gains and Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract]
Gross realized gains	$ 598	$ 451	$ 638
Gross realized losses	(10)		(144)
Net realized gains	588	451	494
Tax expense related to net realized gains	$ 200	$ 153	$ 168

Securities - Amortized Cost a53

Securities - Amortized Cost and Fair Value of Debt Securities, by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Debt Maturities [Abstract]
Amortized Cost, One year or less	$ 19,158
Amortized Cost, After one year through five years	81,888
Amortized Cost, After five years through ten years	67,483
Amortized Cost, After ten years	3,830
Amortized Cost, Total	172,359
Amortized Cost, Mortgage-backed securities	49,155
Amortized Cost	221,514	$ 234,793
Fair Value, One year or less	19,231
Fair Value, After one year through five years	81,590
Fair Value, After five years through ten years	65,583
Fair Value, After ten years	3,662
Fair Value, Total	170,066
Fair Value, Mortgage-backed securities	48,461
Total, Fair Value	$ 218,527	$ 235,115

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential mortgage loan	$ 17,900	$ 20,000
Consumer Real Estate [Member] | Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 2,100	$ 1,200

Loans - Loans (Detail)

Loans - Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans:
Loans - Gross	$ 760,875	$ 686,516
Less: Net deferred loan fees and costs	(726)	(638)
Loans after net deferred loan fees and costs	760,149	685,878
Less: Allowance for loan losses	(6,784)	(6,057)	$ (5,905)	$ (5,194)
Loans - Net	753,365	679,821
Agricultural Real Estate [Member]
Loans:
Loans - Gross	63,391	58,525
Loans after net deferred loan fees and costs	63,352	58,463
Agricultural [Member]
Loans:
Loans - Gross	84,563	82,654
Loans after net deferred loan fees and costs	84,692	82,762
Industrial Development Bonds [Member]
Loans:
Loans - Gross	5,732	6,491
Loans after net deferred loan fees and costs	5,732	6,491
Consumer Real Estate [Member]
Loans:
Loans - Gross	87,273	88,189
Loans after net deferred loan fees and costs	86,912	87,947
Commercial Real Estate [Member]
Loans:
Loans - Gross	377,481	322,762
Loans after net deferred loan fees and costs	376,887	322,230
Consumer [Member]
Loans:
Loans - Gross	33,179	27,770
Loans after net deferred loan fees and costs	33,213	27,787
Commercial and Industrial [Member]
Loans:
Loans - Gross	109,256	100,125
Loans after net deferred loan fees and costs	$ 109,361	$ 100,198

Loans - Maturity Schedule by Ma

Loans - Maturity Schedule by Major Category of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	$ 760,875	$ 686,516
Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	63,391	58,525
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	84,563	82,654
Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	5,732	6,491
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	87,273	88,189
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	377,481	322,762
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	33,179	27,770
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	109,256	$ 100,125
Major Category Of Receivables Due Within One Year [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	119,526
Major Category Of Receivables Due Within One Year [Member] | Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	911
Major Category Of Receivables Due Within One Year [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	51,411
Major Category Of Receivables Due Within One Year [Member] | Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	1,031
Major Category Of Receivables Due Within One Year [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	2,900
Major Category Of Receivables Due Within One Year [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	7,636
Major Category Of Receivables Due Within One Year [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	5,880
Major Category Of Receivables Due Within One Year [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	49,757
Major Category Of Receivables Due Within One Year to Five Years [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	199,259
Major Category Of Receivables Due Within One Year to Five Years [Member] | Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	3,156
Major Category Of Receivables Due Within One Year to Five Years [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	22,771
Major Category Of Receivables Due Within One Year to Five Years [Member] | Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	85
Major Category Of Receivables Due Within One Year to Five Years [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	12,258
Major Category Of Receivables Due Within One Year to Five Years [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	105,377
Major Category Of Receivables Due Within One Year to Five Years [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	20,212
Major Category Of Receivables Due Within One Year to Five Years [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	35,400
Major Category Of Receivables Over Five Years [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	442,090
Major Category Of Receivables Over Five Years [Member] | Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	59,324
Major Category Of Receivables Over Five Years [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	10,381
Major Category Of Receivables Over Five Years [Member] | Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	4,616
Major Category Of Receivables Over Five Years [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	72,115
Major Category Of Receivables Over Five Years [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	264,468
Major Category Of Receivables Over Five Years [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	7,087
Major Category Of Receivables Over Five Years [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans - Gross	$ 24,099

Loans - Distribution of Fixed R

Loans - Distribution of Fixed Rate Loans and Variable Rate Loans by Major Loan Category (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Distribution of fixed rate loans by major loan category, Fixed Rate	$ 47,109
Distribution of variable rate loans by major loan category, Variable Rate	16,282
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Distribution of fixed rate loans by major loan category, Fixed Rate	41,821
Distribution of variable rate loans by major loan category, Variable Rate	42,742
Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Distribution of fixed rate loans by major loan category, Fixed Rate	5,732
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Distribution of fixed rate loans by major loan category, Fixed Rate	50,138
Distribution of variable rate loans by major loan category, Variable Rate	37,135
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Distribution of fixed rate loans by major loan category, Fixed Rate	257,805
Distribution of variable rate loans by major loan category, Variable Rate	119,676
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Distribution of fixed rate loans by major loan category, Fixed Rate	28,544
Distribution of variable rate loans by major loan category, Variable Rate	4,635
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Distribution of fixed rate loans by major loan category, Fixed Rate	52,616
Distribution of variable rate loans by major loan category, Variable Rate	$ 56,640

Loans - Contractual Aging of Re

Loans - Contractual Aging of Recorded Investment in Past Due Loans by Portfolio Classification of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 1,744	$ 2,190
Current	758,405	683,688
Loans after net deferred loan fees and costs	760,149	685,878
Recorded Investment > 90 Days and Accruing	0	0	$ 0
Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	144	162
Current	63,208	58,301
Loans after net deferred loan fees and costs	63,352	58,463
Recorded Investment > 90 Days and Accruing	0	0
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	101	145
Current	84,591	82,617
Loans after net deferred loan fees and costs	84,692	82,762
Recorded Investment > 90 Days and Accruing	0	0
Commercial And Industrial and Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		71
Current	115,093	106,618
Loans after net deferred loan fees and costs	115,093	106,689
Recorded Investment > 90 Days and Accruing	0	0
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,404	707
Current	85,508	87,240
Loans after net deferred loan fees and costs	86,912	87,947
Recorded Investment > 90 Days and Accruing	0	0
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	60	1,077
Current	376,827	321,153
Loans after net deferred loan fees and costs	376,887	322,230
Recorded Investment > 90 Days and Accruing	0	0
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	35	28
Current	33,178	27,759
Loans after net deferred loan fees and costs	33,213	27,787
Recorded Investment > 90 Days and Accruing	0	0
30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,084	609
30 to 59 Days Past Due [Member] | Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	12
30 to 59 Days Past Due [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	101
30 to 59 Days Past Due [Member] | Commercial And Industrial and Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		51
30 to 59 Days Past Due [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	882	303
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	60	236
30 to 59 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	29	19
60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	21	201
60 to 89 Days Past Due [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		145
60 to 89 Days Past Due [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	15	47
60 to 89 Days Past Due [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6	9
Greater Than 90 Days [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	639	1,380
Greater Than 90 Days [Member] | Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	132	162
Greater Than 90 Days [Member] | Commercial And Industrial and Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		20
Greater Than 90 Days [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 507	357
Greater Than 90 Days [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due		$ 841

Loans - Recorded Investment in

Loans - Recorded Investment in Nonaccrual Loans by Portfolio Class of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in nonaccrual loans	$ 1,384	$ 2,041
Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in nonaccrual loans	132	162
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in nonaccrual loans	1,091	1,155
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in nonaccrual loans		484
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in nonaccrual loans		38
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Investment in nonaccrual loans	$ 161	$ 202

Loans (Tier Risk Rating System)

Loans (Tier Risk Rating System) - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Repayment period of loan with a reasonable reduction of principal balance	2 years
3 [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Leverage position	2.00%
Good [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Leverage position	1.50%

Loans - Risk Category of Loans

Loans - Risk Category of Loans by Portfolio Class (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	$ 760,149	$ 685,878
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	109,361	100,198
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	376,887	322,230
1-2 [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	10,060	261
1-2 [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	677	597
3 [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	14,064	22,300
3 [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	27,858	24,264
4 [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	83,100	76,855
4 [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	333,523	293,381
5 [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	1,379	57
5 [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	8,321	1,738
6 [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	641	543
6 [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	6,508	1,828
7 [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	117	182
7 [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs		422
Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	63,352	58,463
Agricultural Real Estate [Member] | 1-2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	4,999	5,841
Agricultural Real Estate [Member] | 3 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	16,660	16,593
Agricultural Real Estate [Member] | 4 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	40,224	35,475
Agricultural Real Estate [Member] | 5 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	1,209	192
Agricultural Real Estate [Member] | 6 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	260	362
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	84,692	82,762
Agricultural [Member] | 1-2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	7,334	12,025
Agricultural [Member] | 3 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	31,397	21,247
Agricultural [Member] | 4 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	44,560	49,220
Agricultural [Member] | 5 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	1,234	250
Agricultural [Member] | 6 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	167
Agricultural [Member] | 7 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs		20
Industrial Development Bonds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	5,732	6,491
Industrial Development Bonds [Member] | 3 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	2,640	3,100
Industrial Development Bonds [Member] | 4 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	$ 3,092	$ 3,391

Loans - Recorded Investment for

Loans - Recorded Investment for Consumer Loans, Credit Quality based on Status of Loan and Payment Activity (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	$ 760,149	$ 685,878
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	86,912	87,947
Pass [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	86,361	87,292
5 [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	25	48
6 [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	368	332
7 [Member] | Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans after net deferred loan fees and costs	158	275
Consumer - Credit Card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	4,061	3,901
Consumer - Credit Card [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	4,061	3,901
Consumer - Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	29,152	23,886
Consumer - Other [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	29,120	23,863
Consumer - Other [Member] | Nonperforming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	$ 32	$ 23

Loans - Schedule of Impaired Lo

Loans - Schedule of Impaired Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Impaired loans without a valuation allowance	$ 1,141	$ 1,257
Impaired loans with a valuation allowance	711	879
Total impaired loans	1,852	2,136
Valuation allowance related to impaired loans	135	330
Total non-accrual loans	1,384	2,041
Total loans past-due ninety days or more and still accruing	0	0	$ 0
Average investment in impaired loans	1,802	2,509	1,929
Interest income recognized on impaired loans	64	96	87
Interest income recognized on a cash basis on impaired loans	$ 27	$ 60	$ 51

Loans (Impaired Loans) - Additi

Loans (Impaired Loans) - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans classified as troubled debt restructured	$ 700,000	$ 1,100
TDR loans, subsequently defaulted during the period		1
TDR loans, subsequently defaulted after modification loss	$ 79,600
Maximum time for re-evaluation (in months)	12 months
Re-evaluation period for real estate	2 years
Unsecured consumer loans, credit card credits and overdraft lines of credit reach	90 days
Delinquent period for charging down consumer loans	120 days
Delinquent period for charging down commercial and agricultural credits	120 days
Foreclosed residential real estate property	$ 774,000	$ 1,175,000
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Foreclosed residential real estate property	169,000	477,000
Residential real estate properties foreclosure proceedings	$ 112,000	$ 425,000

Loans - Impaired Loans Classifi

Loans - Impaired Loans Classified as Troubled Debt Restructured (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)Contract	Dec. 31, 2015USD ($)Contract
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts Modified in the Last 12 Months | Contract	0	1
Pre-Modification Outstanding Recorded Investment		$ 25
Post-Modification Outstanding Recorded Investment		$ 24
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts Modified in the Last 12 Months | Contract	1	1
Pre-Modification Outstanding Recorded Investment	$ 138	$ 528
Post-Modification Outstanding Recorded Investment	$ 138	$ 430

Loans - Loans Individually Eval

Loans - Loans Individually Evaluated for Impairment by Portfolio Class of Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	$ 1,141	$ 1,257
With a specific allowance recorded, Recorded Investment	711	879
With a specific allowance recorded, Related Allowance	135	330
Recorded Investment	1,852	2,136
Related Allowance	135	330
Average Recorded Investment	1,802	2,509	$ 1,929
Interest Income Recognized	64	96	87
Interest Income Recognized Cash Basis	27	60	$ 51
Agricultural Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	132	63
With no related allowance recorded, Unpaid Principal Balance	132	63
With no related allowance recorded, Average Recorded Investment	147	120
With a specific allowance recorded, Average Recorded Investment	9
Recorded Investment	132	63
Unpaid Principal Balance	132	63
Average Recorded Investment	156	120
Consumer Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	1,009	156
With no related allowance recorded, Unpaid Principal Balance	1,009	156
With no related allowance recorded, Average Recorded Investment	101	158
With no related allowance recorded, Interest Income Recognized	16	5
With no related allowance recorded, Interest Income Recognized Cash Basis	4	5
With a specific allowance recorded, Recorded Investment	94	275
With a specific allowance recorded, Unpaid Principal Balance	94	323
With a specific allowance recorded, Related Allowance	34	64
With a specific allowance recorded, Average Recorded Investment	344	181
With a specific allowance recorded, Interest Income Recognized		7
With a specific allowance recorded, Interest Income Recognized Cash Basis		6
Recorded Investment	1,103	431
Unpaid Principal Balance	1,103	479
Related Allowance	34	64
Average Recorded Investment	445	339
Interest Income Recognized	16	12
Interest Income Recognized Cash Basis	4	11
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment		1,038
With no related allowance recorded, Unpaid Principal Balance		1,038
With no related allowance recorded, Average Recorded Investment	427	421
With no related allowance recorded, Interest Income Recognized	24	27
With no related allowance recorded, Interest Income Recognized Cash Basis	23	27
With a specific allowance recorded, Recorded Investment	501	422
With a specific allowance recorded, Unpaid Principal Balance	501	422
With a specific allowance recorded, Related Allowance	66	152
With a specific allowance recorded, Average Recorded Investment	191	907
With a specific allowance recorded, Interest Income Recognized		30
With a specific allowance recorded, Interest Income Recognized Cash Basis		22
Recorded Investment	501	1,460
Unpaid Principal Balance	501	1,460
Related Allowance	66	152
Average Recorded Investment	618	1,328
Interest Income Recognized	24	57
Interest Income Recognized Cash Basis	23	49
Consumer [Member]
Financing Receivable, Impaired [Line Items]
With a specific allowance recorded, Average Recorded Investment		2
Average Recorded Investment		2
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Average Recorded Investment	337	429
With no related allowance recorded, Interest Income Recognized		27
With a specific allowance recorded, Recorded Investment	116	182
With a specific allowance recorded, Unpaid Principal Balance	116	182
With a specific allowance recorded, Related Allowance	35	114
With a specific allowance recorded, Average Recorded Investment	246	291
With a specific allowance recorded, Interest Income Recognized	24
Recorded Investment	116	182
Unpaid Principal Balance	116	182
Related Allowance	35	114
Average Recorded Investment	583	720
Interest Income Recognized	$ 24	$ 27

Loans - Summary of Activities i

Loans - Summary of Activities in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for Loan Losses
Balance at beginning of year				$ 6,057				$ 5,905	$ 6,057	$ 5,905	$ 5,194
Provision for loan loss	$ 197	$ 308	$ 339	$ 277	$ 85	$ 243	$ 183	$ 114	1,121	625	1,191
Loans charged off									(550)	(1,030)	(778)
Recoveries									156	557	298
Balance at ending of year	6,784				6,057				6,784	6,057	5,905
Allowance for Unfunded Loan Commitments & Letters of Credit	217				208				217	208	207
Total Allowance for Credit Losses	$ 7,001				$ 6,265				$ 7,001	$ 6,265	$ 6,112

Loans - Analysis of Allowance f

Loans - Analysis of Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	$ 6,265	$ 6,112
Charge Offs	(550)	(1,030)	$ (778)
Recoveries	156	557	298
Provision (Credit)	1,121	625
Other Non-interest expense related to unfunded	9	1
Ending Balance	7,001	6,265	6,112
Ending balance: individually evaluated for impairment	135	330
Ending balance: collectively evaluated for impairment	6,866	5,935
Ending balance: loans acquired with deteriorated credit quality	1	1
FINANCING RECEIVABLES:
Ending balance	760,149	685,878
Ending balance: individually evaluated for impairment	1,852	2,136
Ending balance: collectively evaluated for impairment	758,297	683,742
Agricultural Real Estate [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	211	184
Provision (Credit)	30	27
Ending Balance	241	211	184
Ending balance: collectively evaluated for impairment	241	211
FINANCING RECEIVABLES:
Ending balance	63,352	58,463
Ending balance: individually evaluated for impairment	132	63
Ending balance: collectively evaluated for impairment	63,220	58,400
Agricultural [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	582	547
Charge Offs	(21)
Recoveries	10	64
Provision (Credit)	45	(29)
Ending Balance	616	582	547
Ending balance: collectively evaluated for impairment	616	582
FINANCING RECEIVABLES:
Ending balance	84,692	82,762
Ending balance: collectively evaluated for impairment	84,692	82,762
Commercial And Industrial and Industrial Development Bonds [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	1,229	1,421
Charge Offs	(20)	(536)
Recoveries	11	91
Provision (Credit)	98	253
Ending Balance	1,318	1,229	1,421
Ending balance: individually evaluated for impairment	35	114
Ending balance: collectively evaluated for impairment	1,283	1,115
FINANCING RECEIVABLES:
Ending balance	115,093	106,689
Ending balance: individually evaluated for impairment	116	182
Ending balance: collectively evaluated for impairment	114,977	106,507
Unfunded Loan Commitment & Letters of Credit [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	208	207
Other Non-interest expense related to unfunded	9	1
Ending Balance	217	208	207
Ending balance: collectively evaluated for impairment	217	208
Receivables Acquired with Deteriorated Credit Quality [Member]
FINANCING RECEIVABLES:
Ending balance: loans acquired with deteriorated credit quality	200	507
Consumer Real Estate [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	338	537
Charge Offs	(106)	(38)
Recoveries	28	41
Provision (Credit)	56	(202)
Ending Balance	316	338	537
Ending balance: individually evaluated for impairment	34	64
Ending balance: collectively evaluated for impairment	282	274
Ending balance: loans acquired with deteriorated credit quality	1	1
FINANCING RECEIVABLES:
Ending balance	86,912	87,947
Ending balance: individually evaluated for impairment	1,103	431
Ending balance: collectively evaluated for impairment	85,809	87,516
Consumer Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
FINANCING RECEIVABLES:
Ending balance: loans acquired with deteriorated credit quality	200	507
Commercial Real Estate [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	2,516	2,367
Charge Offs	(93)	(143)
Recoveries	20	204
Provision (Credit)	807	88
Ending Balance	3,250	2,516	2,367
Ending balance: individually evaluated for impairment	66	152
Ending balance: collectively evaluated for impairment	3,184	2,364
FINANCING RECEIVABLES:
Ending balance	376,887	322,230
Ending balance: individually evaluated for impairment	501	1,460
Ending balance: collectively evaluated for impairment	376,386	320,770
Consumer [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	337	323
Charge Offs	(310)	(313)
Recoveries	87	157
Provision (Credit)	280	170
Ending Balance	394	337	323
Ending balance: collectively evaluated for impairment	394	337
FINANCING RECEIVABLES:
Ending balance	33,213	27,787
Ending balance: collectively evaluated for impairment	33,213	27,787
Unallocated [Member]
ALLOWANCE FOR CREDIT LOSSES:
Beginning balance	844	526
Provision (Credit)	(195)	318
Ending Balance	649	844	$ 526
Ending balance: collectively evaluated for impairment	$ 649	$ 844

Premises and Equipment - Major

Premises and Equipment - Major Categories of Banking Premises and Equipment and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Premises and Equipment (Gross)	$ 41,846	$ 39,702
Less: Accumulated depreciation	(20,389)	(19,115)
Premises and Equipment (Net)	21,457	20,587
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment (Gross)	5,647	5,647
Buildings [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment (Gross)	23,526	21,943
Furnishings [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment (Gross)	$ 12,673	11,783
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Premises and Equipment (Gross)		$ 329

Premises and Equipment - Majo70

Premises and Equipment - Major Categories of Banking Premises and Equipment and Accumulated Depreciation (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016
Minimum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	15 years
Minimum [Member] | Furnishings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Maximum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	39 years
Maximum [Member] | Furnishings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	15 years

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Depreciation Expenses	$ 1.5	$ 1.4	$ 1.3

Servicing - Additional Informat

Servicing - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Transfers and Servicing [Abstract]
Loans serviced for others unpaid principal amount	$ 280.4	$ 275.6
Capitalized service right assets included in other assets	2.2	2.1
Fair market value of the capitalized servicing rights	$ 2.5	$ 2.7
Prepayment rate	14.30%	11.00%
Discount yield	5.38%	6.52%

Servicing - Summary of Mortgage

Servicing - Summary of Mortgage Servicing Rights Capitalized and Amortized (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Servicing Assets at Fair Value [Line Items]
Beginning Year	$ 2,056
End of Year	2,192	$ 2,056
Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Beginning Year	2,056	2,023
Capitalized Additions	555	407
Amortization	(419)	(374)
Valuation Allowance	0	0
End of Year	$ 2,192	$ 2,056

Deposits - Time Deposits (Detai

Deposits - Time Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deposits [Abstract]
Time deposits under $100,000	$ 98,890	$ 103,424
Time deposits of $100,000 or more	99,940	80,861
Total	$ 198,830	$ 184,285

Deposits - Scheduled Maturities

Deposits - Scheduled Maturities for Time Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Maturities of Time Deposits [Abstract]
2,017	$ 79,407
2,018	46,687
2,019	25,876
2,020	20,478
2,021	25,559
thereafter	823
Total	$ 198,830	$ 184,285

Federal Funds Purchased and S76

Federal Funds Purchased and Securities Sold Under Agreement to Repurchase - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Fees And Commissions Income [Abstract]
Securities to be used as collateral for the underlying repurchase agreements	$ 56	$ 65.8
Federal funds purchased	17	$ 22
Securities sold under agreements to repurchase	$ 53.3

Federal Funds Purchased and S77

Federal Funds Purchased and Securities Sold Under Agreement to Repurchase - Daily Securities Sold under Agreement to Repurchase (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amount Outstanding at End of Period	$ 53,300
Daily Securities Sold Under Agreement to Repurchase [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amount Outstanding at End of Period	$ 32,814	$ 39,691
Weighted Average Rate End of Period	0.20%	0.08%
Maximum Amount Borrowings Outstanding Month End	$ 43,929	$ 46,564
Approximate Average Outstanding in Period	$ 39,928	$ 39,371
Approximate Weighted Average Interest Rate For the Period	0.10%	0.08%
Term CDs Sold Under Agreement to Repurchase [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amount Outstanding at End of Period	$ 20,510	$ 17,124
Weighted Average Rate End of Period	1.96%	2.00%
Maximum Amount Borrowings Outstanding Month End	$ 20,510	$ 17,961
Approximate Average Outstanding in Period	$ 19,562	$ 17,294
Approximate Weighted Average Interest Rate For the Period	1.88%	1.62%

Federal Funds Purchased and S78

Federal Funds Purchased and Securities Sold Under Agreement to Repurchase - Schedule of Remaining Contractual Maturity in Repurchase Agreements (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets Sold under Agreements to Repurchase [Line Items]
Federal funds purchased	$ 17,000	$ 22,000
Repurchase agreements, Remaining contractual maturity of the agreements	53,300
Total	70,324	$ 78,815
US Treasury & Agency Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, Remaining contractual maturity of the agreements	53,324
Overnight & Continuous [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Federal funds purchased	17,000
Total	49,814
Overnight & Continuous [Member] | US Treasury & Agency Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, Remaining contractual maturity of the agreements	32,814
Greater Than 90 Days [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Total	20,510
Greater Than 90 Days [Member] | US Treasury & Agency Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, Remaining contractual maturity of the agreements	$ 20,510

Federal Home Loan Bank Advanc79

Federal Home Loan Bank Advances - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)Loans	Dec. 31, 2015USD ($)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Total Borrowings	$ 10,000	$ 10,000
Number of FHLB Loans | Loans	2
Unsecured borrowings through correspondent banks	$ 58,000	58,000
Unpledged securities which could be sold or used as collateral	71,800	29,400
Additional borrowings available from the Federal Home Loan Bank based on current pledging	4,700	4,100
Maximum unsecured borrowing available	$ 115,700	118,500
FHLB Loan One [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate of loans	1.61%
FHLB Loan Two [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest rate of loans	1.34%
Mortgage Loans at Cost [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Advances, secured by mortgage loans	$ 17,900	$ 20,000

Federal Home Loan Bank Advanc80

Federal Home Loan Bank Advances - Summary of Future Obligations of FHLB Advances (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
2,017	$ 5,000
2,018	5,000
Federal Home Loan Bank (FHLB) Advances	$ 10,000	$ 10,000

Federal Income Taxes - Componen

Federal Income Taxes - Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal									$ 4,601	$ 3,941	$ 3,837
Deferred:
Federal									55	(122)	34
Total	$ 1,307	$ 1,161	$ 1,254	$ 934	$ 1,049	$ 961	$ 956	$ 853	$ 4,656	$ 3,819	$ 3,871

Federal Income Taxes - Reconcil

Federal Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate to the Effective Tax Rate (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax at statutory rates									$ 5,521	$ 4,792	$ 4,596
Decrease resulting from:
Tax exempt interest									(468)	(554)	(634)
Change in prior estimates and other									(397)	(419)	(91)
Total	$ 1,307	$ 1,161	$ 1,254	$ 934	$ 1,049	$ 961	$ 956	$ 853	$ 4,656	$ 3,819	$ 3,871

Federal Income Taxes - Compon83

Federal Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Allowance for loan losses	$ 2,326	$ 2,080
Other	553	528
Net unrealized gain on available- for-sale securities	1,016
Total deferred tax assets	3,895	2,608
Allowance for loan losses	2,326	2,080
Other	553	528
Net unrealized gain on available- for-sale securities	1,016
Total deferred tax assets	3,895	2,608
Accreted discounts on bonds	83	100
FHLB stock dividends	744	745
Mortgage servicing rights	752	706
Other	1,745	1,389
Net unrealized gain on available-for-sale securities		109
Total deferred tax liabilities	3,324	3,049
Net Deferred Tax Asset	571
Accreted discounts on bonds	83	100
FHLB stock dividends	744	745
Mortgage servicing rights	752	706
Other	1,745	1,389
Net unrealized gain on available-for-sale securities		109
Total deferred tax liabilities	$ 3,324	3,049
Net Deferred Tax Liability		$ (441)

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)Employeesshares	Dec. 31, 2015USD ($)Employeesshares	Dec. 31, 2014USD ($)Employeesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum percentage of eligible compensation on a pre-tax basis for eligible employees to save	1.00%
Employee contribution matching percentage	50.00%
Percentage of total eligible compensation, contribution by Bank, maximum limit	4.00%
Vesting percentage in participant's deferral contributions and employer matching contributions	100.00%
Vesting period	6 years
Employer matching contribution and the discretionary contribution | $	$ 877	$ 835	$ 779
Restricted stock awards, shares issued	16,150	16,000	13,250
Number of employees, received the stock | Employees			2
Number of shares granted due to retirement			965
Expense for restricted stock awards | $	$ 402	$ 314	$ 232
Awards grants originated in 2012, 2013 and 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of employees, received the stock | Employees		1
One employee received shares from awards granted due to retirement		250
Number of shares paid to estate of deceased employee		325
Awards grants originated in 2013, 2014 and 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of employees, received the stock | Employees	4
One employee received shares from awards granted due to retirement	1,197
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Stock issued to number of employees | Employees	74	67	61
Shares vest under the plan	100.00%	100.00%	100.00%
Shares forfeited due to employee termination	773	100	780
Number of shares vested	11,222	10,295	10,970
Number of employees, received the stock | Employees	45	45	48
Compensation expense | $	$ 379	$ 286	$ 252
Unrecognized compensation cost related to the nonvested portion of restricted stock awards under the plan | $	$ 730
Restricted Stock Awards [Member] | 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested			10,005
Restricted Stock Awards [Member] | 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested		9,720
Restricted Stock Awards [Member] | 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested	10,025

Employee Benefit Plans - Activi

Employee Benefit Plans - Activity of Restricted Stock Awards (Detail) - Restricted Stock Awards [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Shares, Beginning of period	38,995	33,390	31,890
Number of Shares, Granted	16,150	16,000	13,250
Number of Shares, Vested	(11,222)	(10,295)	(10,970)
Number of Shares, Forfeited	(773)	(100)	(780)
Number of Shares, Nonvested, end of period	43,150	38,995	33,390
Weighted average fair value per award, Beginning of period	$ 24.92	$ 22.77	$ 20.38
Weighted average fair value per award, Granted	32.02	26.35	25.50
Weighted average fair value per award, Vested	31.72	26.33	25.39
Weighted average fair value per award, Forfeited	31.54	26.07	24.97
Weighted average fair value per award, Nonvested, end of period	$ 28.20	$ 24.92	$ 22.77

Earnings Per Share - Calculatio

Earnings Per Share - Calculation of Basic Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income	$ 3,194	$ 3,015	$ 2,974	$ 2,481	$ 2,772	$ 2,620	$ 2,597	$ 2,351	$ 11,664	$ 10,340	$ 9,646
Less: distributed earnings allocated to participating securities									(37)	(31)	(27)
Less: undistributed earnings allocated to participating securities									(64)	(47)	(40)
Net earnings available to common shareholders									$ 11,563	$ 10,262	$ 9,579
Weighted average common shares outstanding including participating securities									4,612,115	4,617,058	4,628,178
Less: average unvested restricted shares									(39,982)	(35,000)	(32,278)
Weighted average common shares outstanding	4,620,831	4,612,766	4,605,534	4,609,226	4,621,122	4,615,379	4,608,453	4,623,322	4,572,133	4,582,058	4,595,900
Basic and diluted earnings per share									$ 2.53	$ 2.24	$ 2.08

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Directors and Executive Officers [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)SecurityLoan	Dec. 31, 2015USD ($)
Related Party Transaction [Line Items]
Granted loans to affiliate companies	$ 1,500	$ 739
Subsequent advances	9,900
Payment received	10,100
Difference in related borrowings amounts	757
Ownership interest amount	$ 21,700	$ 26,300
Number of new loans approved | SecurityLoan	1

Off Balance Sheet Activities -

Off Balance Sheet Activities - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Allowance for credit losses relates to unfunded loan commitments	$ 217	$ 208

Off Balance Sheet Activities 89

Off Balance Sheet Activities - Outstanding Financial Instruments Whose Contract Amounts Represent Credit Risk (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Standby letters of credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Concentration of Risk	$ 875	$ 770
Commitments to extend credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Concentration of Risk	223,534	246,321
Credit card arrangements [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Concentration of Risk	$ 18,316	$ 16,100

Minimum Regulatory Capital Re90

Minimum Regulatory Capital Requirements - Additional Information (Detail)	Jan. 01, 2019	Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum ratio of capital to risk-weighted assets		8.00%	8.00%
Minimum leverage ratio calculated as ratio of Tier 1 capital to average quarterly assets		11.77%	11.91%
Scenario, Forecast [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	2.50%
Minimum ratio of capital to risk-weighted assets including capital conservation buffer	10.50%
Minimum ratio of capital to risk-weighted assets	8.00%
Minimum leverage ratio calculated as ratio of Tier 1 capital to average quarterly assets	4.00%
Capital conservation buffer at base level	0.625%
Regulatory capital requirements phase period	4 years
Scenario, Forecast [Member] | Common Equity Tier 1 Capital [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum ratio of capital to risk-weighted assets	4.50%
Capital conservation buffer	2.50%
Minimum ratio of capital to risk-weighted assets including capital conservation buffer	7.00%
Scenario, Forecast [Member] | Tier 1 Capital [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum ratio of capital to risk-weighted assets	6.00%
Minimum ratio of capital to risk-weighted assets including capital conservation buffer	8.50%

Minimum Regulatory Capital Re91

Minimum Regulatory Capital Requirements - Summary of Bank's Actual and Required Capital Amounts and Ratios (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Capital to Risk Weighted Assets Actual, Amount	$ 123,031	$ 115,386
Common Equity Tier 1 Capital to Risk Weighted Assets Actual, Ratio	14.46%	14.18%
Common Equity Tier 1 Capital For Capital Adequacy Purposes, Amount	$ 38,296	$ 36,626
Common Equity Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Total Risk-Based Capital to Risk Weighted Assets Actual, Amount	$ 130,032	$ 121,651
Tier 1 Capital to Risk Weighted Assets Actual, Amount	123,031	115,386
Tier 1 leverage Capital to Adjusted Total Assets Actual, Amount	$ 123,031	$ 115,386
Total Risk-Based Capital to Risk Weighted Assets Actual, Ratio	15.28%	14.95%
Tier 1 Capital to Risk Weighted Assets Actual, Ratio	14.46%	14.18%
Tier 1 leverage Capital to Adjusted Total Assets Actual, Ratio	11.77%	11.91%
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy Purposes, Amount	$ 68,081	$ 65,113
Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Amount	51,061	48,834
Tier 1 leverage Capital to Adjusted Total Assets For Capital Adequacy Purposes, Amount	$ 41,826	$ 38,752
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio	6.00%	6.00%
Tier 1 leverage Capital to Adjusted Total Assets For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Farmers & Merchants State Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Capital to Risk Weighted Assets Actual, Amount	$ 100,999	$ 96,231
Common Equity Tier 1 Capital to Risk Weighted Assets Actual, Ratio	11.91%	11.87%
Common Equity Tier 1 Capital For Capital Adequacy Purposes, Amount	$ 38,156	$ 36,494
Common Equity Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Common Equity Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount	$ 55,115	$ 52,714
Common Equity Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Total Risk-Based Capital to Risk Weighted Assets Actual, Amount	$ 108,000	$ 102,496
Tier 1 Capital to Risk Weighted Assets Actual, Amount	100,999	96,231
Tier 1 leverage Capital to Adjusted Total Assets Actual, Amount	$ 100,999	$ 96,231
Total Risk-Based Capital to Risk Weighted Assets Actual, Ratio	12.73%	12.64%
Tier 1 Capital to Risk Weighted Assets Actual, Ratio	11.91%	11.87%
Tier 1 leverage Capital to Adjusted Total Assets Actual, Ratio	9.75%	10.12%
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy Purposes, Amount	$ 67,833	$ 64,879
Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Amount	50,875	48,659
Tier 1 leverage Capital to Adjusted Total Assets For Capital Adequacy Purposes, Amount	$ 41,425	$ 38,019
Total Risk-Based Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Tier 1 Capital to Risk Weighted Assets For Capital Adequacy Purposes, Ratio	6.00%	6.00%
Tier 1 leverage Capital to Adjusted Total Assets For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Total Risk-Based Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount	$ 84,792	$ 81,099
Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount	67,833	64,879
Tier 1 leverage Capital to Adjusted Total Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Amount	$ 51,181	$ 47,524
Total Risk-Based Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital to Risk Weighted Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio	8.00%	8.00%
Tier 1 leverage Capital to Adjusted Total Assets To Be Well Capitalized Under the Prompt Corrective Action Provisions, Ratio	5.00%	5.00%

Restrictions of Dividends & I92

Restrictions of Dividends & Inter-company Borrowings - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)
Equity [Abstract]
Dividends may be paid without prior regulatory approval	$ 12.1

Fair Value of Financial Instr93

Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest-bearing deposits maturing date	90 days
Collateral dependent impaired loans categorized as Level 3	$ 1,852,000	$ 2,136,000
Specific allocation for collateral dependent impaired loans	135,000	330,000
Asset impairment charges	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans categorized as Level 3	$ 1,700,000	$ 1,800,000

Fair Value of Financial Instr94

Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financial Assets:
Cash and Cash Equivalents	$ 28,322	$ 22,018	$ 24,295	$ 19,263
Interest-bearing time deposits	1,915
Securities - available for sale	218,527	235,115
Loans, net	753,365	679,821
Financial Liabilities:
Non-interest bearing Deposits	186,390	171,112
Time Deposits	198,830	184,285
Total deposits	842,203	771,339
Federal Funds Purchased and Securities sold under agreement to repurchase	70,324	78,815
Federal Home Loan Bank advances	10,000	10,000
Reported Value Measurement [Member]
Financial Assets:
Cash and Cash Equivalents	28,322	22,018
Interest-bearing time deposits	1,915
Securities - available for sale	218,527	235,115
Other Securities	3,717	3,717
Loans, net	753,365	679,821
Interest receivable	3,880	3,589
Financial Liabilities:
Interest bearing Deposits	456,983	415,942
Non-interest bearing Deposits	186,390	171,112
Time Deposits	198,830	184,285
Total deposits	842,203	771,339
Federal Funds Purchased and Securities sold under agreement to repurchase	70,324	78,815
Federal Home Loan Bank advances	10,000	10,000
Interest payable	256	185
Fair Value [Member]
Financial Assets:
Cash and Cash Equivalents	28,322	22,018
Interest-bearing time deposits	1,918
Securities - available for sale	218,527	235,115
Other Securities	3,717	3,717
Loans, net	755,412	683,332
Interest receivable	3,880	3,589
Financial Liabilities:
Interest bearing Deposits	456,983	415,942
Non-interest bearing Deposits	186,390	171,112
Time Deposits	199,658	184,308
Total deposits	843,031	771,362
Federal Funds Purchased and Securities sold under agreement to repurchase	70,324	78,815
Federal Home Loan Bank advances	10,041	9,986
Interest payable	256	185
Level 1 [Member]
Financial Assets:
Cash and Cash Equivalents	28,322	22,018
Securities - available for sale	24,775	38,505
Level 2 [Member]
Financial Assets:
Interest-bearing time deposits	1,918
Securities - available for sale	192,334	189,258
Financial Liabilities:
Non-interest bearing Deposits	186,390	171,112
Total deposits	186,390	171,112
Level 3 [Member]
Financial Assets:
Securities - available for sale	1,418	7,352
Other Securities	3,717	3,717
Loans, net	755,412	683,332
Interest receivable	3,880	3,589
Financial Liabilities:
Interest bearing Deposits	456,983	415,942
Time Deposits	199,658	184,308
Total deposits	656,641	600,250
Federal Funds Purchased and Securities sold under agreement to repurchase	70,324	78,815
Federal Home Loan Bank advances	10,041	9,986
Interest payable	$ 256	$ 185

Fair Value of Financial Instr95

Fair Value of Financial Instruments - Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	$ 218,527	$ 235,115
U.S. Treasury [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	24,775	38,505
U.S. Government Agencies [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	82,474	98,220
Mortgage-backed Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	48,461	26,324
State and Local Governments [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	62,817	72,066
Level 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	24,775	38,505
Level 1 [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	24,775	38,505
Level 1 [Member] | U.S. Treasury [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	24,775	38,505
Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	192,334	189,258
Level 2 [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	192,334	189,258
Level 2 [Member] | U.S. Government Agencies [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	82,474	98,220
Level 2 [Member] | Mortgage-backed Securities [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	48,461	26,324
Level 2 [Member] | State and Local Governments [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	61,399	64,714
Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	1,418	7,352
Level 3 [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	1,418	7,352
Level 3 [Member] | State and Local Governments [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	1,418	7,352	$ 7,931
Level 3 [Member] | State and Local Governments [Member] | Fair Value on a Recurring Basis [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total Securities Available for Sale	$ 1,418	$ 7,352

Fair Value of Financial Instr96

Fair Value of Financial Instruments - Changes in the Level 3 Fair Value Category of Unobservable Inputs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 235,115
Purchases	114,819	$ 60,925
Sales	85,723	47,029	$ 57,928
Ending Balance	218,527	235,115
State and Local Governments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	72,066
Ending Balance	62,817	72,066
Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	7,352
Ending Balance	1,418	7,352
Level 3 [Member] | State and Local Governments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	7,352	7,931
Change in Market Value	(294)	(104)
Purchases	0	0
Sales	0	0
Payments & Maturities	(5,640)	(475)
Ending Balance	1,418	7,352	7,931
Level 3 [Member] | State and Local Governments [Member] | Tax - Exempt [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	5,904	6,638
Change in Market Value	(264)	(259)
Purchases	0	0
Sales	0	0
Payments & Maturities	(5,640)	(475)
Ending Balance		5,904	6,638
Level 3 [Member] | State and Local Governments [Member] | Taxable [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	1,448	1,293
Change in Market Value	(30)	155
Purchases	0	0
Sales	0	0
Ending Balance	$ 1,418	$ 1,448	$ 1,293

Fair Value of Financial Instr97

Fair Value of Financial Instruments - Collateral Dependent Impaired Loans and Other Real Estate (Detail) - Fair Value on Nonrecurring Basis [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of assets	$ (1,565)	$ (49)
Collateral Dependent Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis, Total	576	549
Change in fair value of assets	(1,564)	(17)
Other Real Estate Owned - Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis, Total	144	216
Change in fair value of assets	(1)	(32)
Level 3 [Member] | Collateral Dependent Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis, Total	576	549
Level 3 [Member] | Other Real Estate Owned - Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis, Total	$ 144	$ 216

Fair Value of Financial Instr98

Fair Value of Financial Instruments - Quantitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
State and Local Governments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,418	$ 7,352
Collateral Dependent Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	576	549
Other Real Estate Owned - Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 144
Other Real Estate Owned - Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value		$ 216
Minimum [Member] | State and Local Governments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.00%	0.00%
Minimum [Member] | Collateral Dependent Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.00%	0.00%
Minimum [Member] | Other Real Estate Owned - Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.00%
Minimum [Member] | Other Real Estate Owned - Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate		0.00%
Maximum [Member] | State and Local Governments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	5.00%	5.00%
Maximum [Member] | Collateral Dependent Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	50.00%	50.00%
Maximum [Member] | Other Real Estate Owned - Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	20.00%
Maximum [Member] | Other Real Estate Owned - Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate		20.00%
Weighted Average [Member] | State and Local Governments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	3.92%	2.57%
Weighted Average [Member] | Collateral Dependent Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	18.92%	37.46%
Weighted Average [Member] | Other Real Estate Owned - Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	0.51%
Weighted Average [Member] | Other Real Estate Owned - Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate		12.28%

Condensed Financial Statement99

Condensed Financial Statements of Parent Company - Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related party receivables:
Total Assets	$ 1,055,895	$ 989,068
Liabilities
Dividends payable	1,053	1,007
Total liabilities	930,318	868,971
Stockholders' Equity	125,577	120,097	$ 114,493	$ 108,617
Total Liabilities and Stockholders' Equity	1,055,895	989,068
Farmers & Merchants State Bank [Member]
Assets
Cash	1,435	787
Related party receivables:
Dividends & Accounts receivable from subsidiaries	1,842	1,730
Accrued interest receivable Municipals	63	63
Securities - Municipals	17,290	16,388
Investment in subsidiaries	106,044	102,178
Total Assets	126,674	121,146
Liabilities
Accrued expenses	44	42
Dividends payable	1,053	1,007
Total liabilities	1,097	1,049
Stockholders' Equity	125,577	120,097
Total Liabilities and Stockholders' Equity	$ 126,674	$ 121,146

Condensed Financial Statemen100

Condensed Financial Statements of Parent Company - Statements of Income and Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income
Interest									$ 33,703	$ 29,293	$ 28,070
Interest Municipals									1,437	1,739	2,037
Gain on sales of available-for-sale securities									588	451	494
Total interest income	$ 9,746	$ 9,590	$ 9,387	$ 9,004	$ 8,733	$ 8,444	$ 8,289	$ 8,184	37,727	33,650	33,453
Income Before Income Taxes and Equity in Undistributed Earnings of Subsidiaries	4,501	4,176	4,228	3,415	3,821	3,581	3,553	3,204
Income Taxes (Benefit)	1,307	1,161	1,254	934	1,049	961	956	853	4,656	3,819	3,871
Net Income	$ 3,194	$ 3,015	$ 2,974	$ 2,481	$ 2,772	$ 2,620	$ 2,597	$ 2,351	11,664	10,340	9,646
Other Comprehensive Income (Loss):
Unrealized gains (losses) on securities									(2,721)	100	1,158
Comprehensive Income									9,480	10,108	10,084
Farmers & Merchants State Bank [Member]
Income
Dividends from subsidiaries									6,000	6,220	5,725
Interest									0	0	0
Interest Municipals									272	219	215
Gain on sales of available-for-sale securities										124
Total interest income									6,272	6,563	5,940
Operating Expenses									681	677	577
Income Before Income Taxes and Equity in Undistributed Earnings of Subsidiaries									5,591	5,886	5,363
Income Taxes (Benefit)									(238)	(188)	(196)
Income from operation before equity in undistributed earnings of subsidiary									5,829	6,074	5,559
Equity in undistributed earnings of Subsidiaries									5,835	4,266	4,087
Net Income									11,664	10,340	9,646
Other Comprehensive Income (Loss):
Unrealized gains (losses) on securities									(2,184)	(232)	438
Comprehensive Income									$ 9,480	$ 10,108	$ 10,084

Condensed Financial Statemen101

Condensed Financial Statements of Parent Company - Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flows from Operating Activities
Net income	$ 3,194	$ 3,015	$ 2,974	$ 2,481	$ 2,772	$ 2,620	$ 2,597	$ 2,351	$ 11,664	$ 10,340	$ 9,646
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Gain on Sale of Available for Sale Securities									(588)	(451)	(494)
Changes in Assets and Liabilities:
Other Assets and Liabilities									(688)	1,275	971
Net Cash Provided by Operating Activities									12,430	14,809	19,163
Activity in available for sale securities:
Maturities, prepayments and calls									41,825	26,059	17,817
Sales									85,723	47,029	57,928
Purchases									(114,819)	(60,925)
Net cash provided by (used in) investing activities									(64,190)	(53,972)	22,507
Cash Flows from Financing Activities
Payment of dividends									(4,115)	(3,943)	(3,864)
Purchase of Treasury Stock									(194)	(803)	(576)
Net cash provided by (used) financing activities									58,064	36,886	(36,638)
Net Change in Cash and Cash Equivalents									6,304	(2,277)	5,032
Farmers & Merchants State Bank [Member]
Cash Flows from Operating Activities
Net income									11,664	10,340	9,646
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Equity in undistributed net income (Distributions in excess earnings) of subsidiaries									(5,835)	(4,266)	(4,087)
Accretion & Amortization of Securities									179	152	146
Gain on Sale of Available for Sale Securities										(124)
Changes in Assets and Liabilities:
Dividends receivable										475	(1,025)
Other Assets and Liabilities									355	156	(12)
Net Cash Provided by Operating Activities									6,363	6,733	4,668
Cash Flows from Investing Activities
Investing in Subsidiaries											(250)
Activity in available for sale securities:
Maturities, prepayments and calls									1,485	1,000
Sales										6,282
Purchases									(2,891)	(8,784)
Repayment of Subsidiary Subordinated Debt									0	0	0
Net cash provided by (used in) investing activities									(1,406)	(1,502)	(250)
Cash Flows from Financing Activities
Payment of dividends									(4,115)	(3,943)	(3,862)
Purchase of Treasury Stock									(194)	(803)	(576)
Net cash provided by (used) financing activities									(4,309)	(4,746)	(4,438)
Net Change in Cash and Cash Equivalents									648	485	(20)
Cash and Cash Equivalents
Cash and Cash Equivalents - Beginning of Year				$ 787				$ 302	787	302	322
Cash and Cash Equivalents - End of Year	$ 1,435				$ 787				$ 1,435	$ 787	$ 302

Quarterly Financial Data - Summ

Quarterly Financial Data - Summary of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary of Income:
Interest income	$ 9,746	$ 9,590	$ 9,387	$ 9,004	$ 8,733	$ 8,444	$ 8,289	$ 8,184	$ 37,727	$ 33,650	$ 33,453
Interest expense	1,081	1,099	1,047	996	923	935	871	858	4,223	3,587	3,716
Net Interest Income	8,665	8,491	8,340	8,008	7,810	7,509	7,418	7,326	33,504	30,063	29,737
Provision for loan loss	197	308	339	277	85	243	183	114	1,121	625	1,191
Net interest income after provision for loan loss	8,468	8,183	8,001	7,731	7,725	7,266	7,235	7,212	32,383	29,438	28,546
Other income (expense)	(3,967)	(4,007)	(3,773)	(4,316)	(3,904)	(3,685)	(3,682)	(4,008)
Net income before income taxes	4,501	4,176	4,228	3,415	3,821	3,581	3,553	3,204
Income Taxes	1,307	1,161	1,254	934	1,049	961	956	853	4,656	3,819	3,871
Net income	$ 3,194	$ 3,015	$ 2,974	$ 2,481	$ 2,772	$ 2,620	$ 2,597	$ 2,351	$ 11,664	$ 10,340	$ 9,646
Earnings per common share	$ 0.70	$ 0.65	$ 0.65	$ 0.54	$ 0.60	$ 0.57	$ 0.56	$ 0.51
Average common shares outstanding	4,620,831	4,612,766	4,605,534	4,609,226	4,621,122	4,615,379	4,608,453	4,623,322	4,572,133	4,582,058	4,595,900