Middlefield Banc (MBCN) 10-K 15 Mar 17 2016 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Mar. 10, 2017	Jun. 30, 2016
Document Information [Line Items]
Entity Registrant Name	Middlefield Banc Corp.
Entity Central Index Key	836,147
Trading Symbol	mbcn
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		2,800,429
Entity Public Float			$ 71.1
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($)		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
ASSETS
Cash and due from banks		$ 31,395,000	$ 22,421,000
Federal funds sold		1,100,000	1,329,000
Cash and cash equivalents		32,495,000	23,750,000
Investment securities available for sale, at fair value		114,376,000	146,520,000
Loans held for sale		634,000	1,107,000
Loans		609,140,000	533,710,000
Less allowance for loan and lease losses		6,598,000	6,385,000	$ 6,846,000
Net loans		602,542,000	527,325,000
Premises and equipment, net		11,203,000	9,772,000
Goodwill		4,559,000	4,559,000
Core deposit intangibles		36,000	76,000
Bank-owned life insurance		13,540,000	13,141,000
Other real estate owned		934,000	1,412,000
Accrued interest and other assets		7,502,000	7,477,000
TOTAL ASSETS		787,821,000	735,139,000
LIABILITIES
Noninterest-bearing demand		133,630,000	116,498,000
Interest-bearing demand		59,560,000	57,219,000
Money market		74,940,000	78,856,000
Savings		172,370,000	180,653,000
Time		189,434,000	191,221,000
Total deposits		629,934,000	624,447,000
Balance at year-end		68,359,000	35,825,000
Other borrowings		9,437,000	9,939,000
Accrued interest and other liabilities		3,131,000	2,624,000
TOTAL LIABILITIES		710,861,000	672,835,000
STOCKHOLDERS' EQUITY
Common stock, no par value; 10,000,000 shares authorized, 2,640,418 and 2,263,403 shares issued; 2,263,403 and 2.242,025 shares outstanding		47,943,000	36,191,000
Retained earnings		41,334,000	37,236,000
Accumulated other comprehensive income	[1]	1,201,000	2,395,000
Treasury stock, at cost; 386,165 shares		(13,518,000)	(13,518,000)
TOTAL STOCKHOLDERS' EQUITY		76,960,000	62,304,000	$ 63,867,000	$ 53,473,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$ 787,821,000	$ 735,139,000
[1]	All amounts are net of tax. Amounts in parentheses indicate debits.

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parentheticals) - $ / shares $ / shares in Thousands	Dec. 31, 2016	Dec. 31, 2015
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	2,640,418	2,263,403
Common stock, shares outstanding (in shares)	2,263,403	2,242,025
Treasury stock, shares (in shares)	386,165	386,165

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
INTEREST AND DIVIDEND INCOME
Interest and fees on loans	$ 25,798,000	$ 23,824,000	$ 22,726,000
Interest-bearing deposits in other institutions	53,000	33,000	24,000
Federal funds sold	20,000	13,000	14,000
Investment securities:
Taxable interest	1,106,000	1,467,000	1,896,000
Tax-exempt interest	2,913,000	3,160,000	3,127,000
Dividends on stock	104,000	98,000	87,000
Total interest and dividend income	29,994,000	28,595,000	27,874,000
INTEREST EXPENSE
Deposits	3,618,000	3,426,000	3,633,000
Short-term borrowings	322,000	194,000	148,000
Other borrowings	68,000	83,000	118,000
Trust preferred securities	182,000	117,000	171,000
Total interest expense	4,190,000	3,820,000	4,070,000
NET INTEREST INCOME	25,804,000	24,775,000	23,804,000
Provision for loan losses	570,000	315,000	370,000
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	25,234,000	24,460,000	23,434,000
NONINTEREST INCOME
Service charges on deposit accounts	1,940,000	1,874,000	1,876,000
Investment securities gains, net	303,000	323,000	248,000
Earnings on bank-owned life insurance	403,000	624,000	276,000
Revenue from investment services	415,000	436,000	451,000
Gains on sale of loans	419,000	329,000	237,000
Other income	479,000	458,000	500,000
Total noninterest income	3,959,000	4,044,000	3,588,000
NONINTEREST EXPENSE
Salaries and employee benefits	10,249,000	9,751,000	8,817,000
Occupancy expense	1,252,000	1,253,000	1,108,000
Equipment expense	991,000	944,000	963,000
Data processing costs	1,335,000	1,071,000	917,000
Ohio state franchise tax	632,000	300,000	342,000
Federal deposit insurance expense	438,000	472,000	449,000
Professional fees	1,441,000	1,247,000	1,086,000
(Gain) loss on other real estate owned	(448,000)	(48,000)	183,000
Advertising expenses	734,000	721,000	488,000
Other real estate expenses	329,000	611,000	387,000
Directors fees	413,000	451,000	403,000
Appraiser fees	419,000	56,000
ATM fees	446,000	358,000	371,000
Other expense	2,601,000	2,850,000	2,296,000
Total noninterest expense	20,872,000	20,077,000	17,850,000
Income before income taxes	8,321,000	8,427,000	9,172,000
Income taxes	1,905,000	1,562,000	1,992,000
NET INCOME	$ 6,416,000	$ 6,865,000	$ 7,180,000
EARNINGS PER SHARE
Basic (in dollars per share)	$ 3.04	$ 3.41	$ 3.52
Diluted (in dollars per share)	3.03	3.39	3.50
Cash dividends per share (in dollars per share)	$ 1.08	$ 1.07	$ 1.04
Core Deposits [Member]
NONINTEREST EXPENSE
Core deposit intangible amortization	$ 40,000	$ 40,000	$ 40,000

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Net income	$ (6,416)		$ (6,865)	$ (7,180)
Other comprehensive (loss) income:
Net unrealized holding (loss) gain on available- for-sale investment securities	(1,505)		91	7,498
Tax effect	511		(31)	(2,549)
Reclassification adjustment for investment securities gains included in net income	(303)		(323)	(248)
Tax effect	103		110	84
Total other comprehensive (loss) income	(1,194)	[1]	(153)	4,785
Comprehensive income	$ 5,222		$ 6,712	$ 11,965
[1]	All amounts are net of tax. Amounts in parentheses indicate debits.

Consolidated Statement of Chang

Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 31, 2013	2,221,834
Balance at Dec. 31, 2013	$ 34,979	$ 27,465	$ (2,237)	$ (6,734)	$ 53,473
Net income		7,180			7,180
Other comprehensive income			4,785		4,785
Dividend reinvestment and purchase plan (in shares)	19,791
Dividend reinvestment and purchase plan	$ 590				590
Stock options exercised	$ (50)				(50)
Stock-based compensation (in shares)	400
Stock-based compensation	$ 10				10
Cash dividends		(2,121)
Balance (in shares) at Dec. 31, 2014	2,242,025
Balance at Dec. 31, 2014	$ 35,529	32,524	2,548	(6,734)	63,867
Net income		6,865			6,865
Other comprehensive income			(153)		(153)
Dividend reinvestment and purchase plan (in shares)	20,393
Dividend reinvestment and purchase plan	$ 651				651
Stock options exercised	$ (7)				(7)
Stock-based compensation (in shares)	585
Stock-based compensation	$ 18				18
Cash dividends		(2,153)			$ (2,153)
Balance (in shares) at Dec. 31, 2015	2,263,403				2,242,025
Balance at Dec. 31, 2015	$ 36,191	37,236	2,395	(13,518)	$ 62,304
Purchase of treasury stock (196,635 shares)				(6,784)	$ (6,784)
Stock options exercised (in shares)	400				2,175
Net income		6,416			$ 6,416
Other comprehensive income			(1,194)		(1,194)
Dividend reinvestment and purchase plan (in shares)	15,300
Dividend reinvestment and purchase plan	$ 519				519
Stock options exercised	$ (6)				(6)
Stock-based compensation (in shares)	900
Stock-based compensation	$ 29				29
Cash dividends		(2,318)			$ (2,318)
Balance (in shares) at Dec. 31, 2016	2,640,418				2,263,403
Balance at Dec. 31, 2016	$ 47,943	41,334	1,201	(13,518)	$ 76,960
Stock options exercised (in shares)					500
Common stock issuance, net of issuance cost ($697) (in shares)	360,815
Common stock issuance, net of issuance cost ($697)	$ 11,210				$ 11,210

Consolidated Statement of Chan7

Consolidated Statement of Changes in Stockholders' Equity (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Retained Earnings [Member]
Cash dividends per share (in dollars per share)	$ 1.08	$ 1.07	$ 1.04
Treasury Stock [Member]
Purchase of treasury stock (in shares)		196,635
Common Stock [Member]
Common stock, issuance cost	$ 697
Cash dividends per share (in dollars per share)	$ 1.08	$ 1.07	$ 1.04

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
OPERATING ACTIVITIES
Net income	$ 6,416,000	$ 6,865,000	$ 7,180,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	570,000	315,000	370,000
Investment securities gains, net	(303,000)	(323,000)	(248,000)
Depreciation and amortization	1,066,000	1,013,000	1,049,000
Amortization of premium and discount on investment securities	119,000	669,000	737,000
Accretion of deferred loan fees, net	(245,000)	(603,000)	(237,000)
Origination of loans held for sale	(19,736,000)	(17,889,000)	(6,223,000)
Proceeds from sale of loans held for sale	20,628,000	17,549,000	6,022,000
Gains on sale of loans	(419,000)	(329,000)	(237,000)
Earnings on bank-owned life insurance	(403,000)	(624,000)	(276,000)
Deferred income taxes	(93,000)	558,000	(154,000)
Stock-based compensation expense	29,000	18,000	10,000
(Gain) loss on other real estate owned	(448,000)	(48,000)	183,000
Other real estate owned writedowns	(19,000)	102,000	123,000
(Increase) decrease in accrued interest receivable	(39,000)	(292,000)	40,000
Increase (decrease) in accrued interest payable		80,000	(49,000)
Other, net	678,000	121,000	(831,000)
Net cash provided by operating activities	7,801,000	7,182,000	7,459,000
INVESTING ACTIVITIES
Proceeds from repayments and maturities	23,201,000	13,497,000	13,474,000
Proceeds from sale of securities	9,063,000	15,686,000	8,383,000
Purchases	(1,744,000)	(21,946,000)	(12,287,000)
Increase in loans, net	(76,199,000)	(63,937,000)	(36,222,000)
Proceeds from the sale of other real estate owned	1,607,000	1,762,000	832,000
Purchase of restricted stock	(317,000)
Purchase of bank-owned life insurance		(4,000,000)
Proceeds from death benefit	575,000
Purchase of premises and equipment	(2,166,000)	(507,000)	(902,000)
Net cash used for investing activities	(45,980,000)	(59,445,000)	(26,722,000)
FINANCING ACTIVITIES
Net increase (decrease) in deposits	5,487,000	38,335,000	17,276,000
Increase in short-term borrowings, net	32,534,000	21,017,000	3,999,000
Repayment of other borrowings	(502,000)	(685,000)	(985,000)
Common stock issued	11,210,000
Stock options exercised	(6,000)	(7,000)	(50,000)
Proceeds from dividend reinvestment and purchase plan	519,000	651,000	590,000
Purchase of treasury stock		(6,784,000)
Cash dividends	(2,318,000)	(2,153,000)	(2,121,000)
Net cash provided by (used for) financing activities	46,924,000	50,374,000	18,709,000
Increase (decrease) in cash and cash equivalents	8,745,000	(1,889,000)	(554,000)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	23,750,000	25,639,000	26,193,000
CASH AND CASH EQUIVALENTS AT END OF YEAR	32,495,000	23,750,000	25,639,000
SUPPLEMENTAL INFORMATION
Interest on deposits and borrowings	4,190,000	3,740,000	4,119,000
Income taxes	1,335,000	800,000	2,260,000
Non-cash investing transactions:
Loans to facilatate the sal of oter real estate owned	63,000
Transfers from loans to other real estate owned	720,000	638,000	1,030,000
Death benefit proceeds not yet not yet received from insurance company		$ 575,000

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Significant Accounting Policies [Text Block]	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES A summary of the significant accounting and reporting policies applied in the presentation of the accompanying financial statements follows: Nature of Operations and Basis of Presentation Middlefield Banc Corp. (the “Company”) is an Ohio corporation organized to become the holding company of The Middlefield Banking Company (“MBC”). MBC is a state-chartered bank located in Ohio. On April 19, 2007, January 20, 2014. October 23, 2009, ten The consolidated financial statements of the Company include its wholly owned subsidiaries, MBC and EMORECO, Inc. Significant intercompany items have been eliminated in preparing the consolidated financial statements. The financial statements have been prepared in conformity with U.S. Generally Accepted Accounting Principles. In preparing the financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the balance sheet date and revenues and expenses for the period. Actual results could differ from those estimates. Investment Securities Investment securities are classified at the time of purchase, based on management’s intention and ability, as securities held to maturity or securities available for sale. Debt securities acquired with the intent and ability to hold to maturity are stated at cost adjusted for amortization of premium and accretion of discount, which are computed using a level yield method and recognized as adjustments of interest income. Certain other debt securities have been classified as available for sale to serve principally as a source of liquidity. Unrealized holding gains and losses for available-for-sale securities are reported as a separate component of stockholders’ equity, net of tax, until realized. Realized security gains and losses are computed using the specific identification method. Interest and dividends on investment securities are recognized as income when earned. Securities are evaluated on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation to determine whether a decline in their value is other than temporary. For debt securities, management considers whether the present value of cash flows expected to be collected are less than the security’s amortized cost basis (the difference defined as the credit loss), the magnitude and duration of the decline, the reasons underlying the decline and the Bank’s intent to sell the security or whether it is more likely than not that the Bank would be required to sell the security before its anticipated recovery in market value, to determine whether the loss in value is other than temporary. Once a decline in value is determined to be other than temporary, if the Bank does not intend to sell the security, and it is more likely than not that it will not be required to sell the security, before recovery of the security’s amortized cost basis, the charge to earnings is limited to the amount of credit loss. Any remaining difference between fair value and amortized cost (the difference defined as the non-credit portion) is recognized in other comprehensive income, net of applicable taxes. Otherwise, the entire difference between fair value and amortized cost is charged to earnings. For equity securities where the fair value has been significantly below cost for one Restricted Stock Common stock of the Federal Home Loan Bank (“FHLB”) represents ownership in an institution that is wholly owned by other financial institutions. This equity security is accounted for at cost and classified with other assets. The FHLB of Cincinnati has reported profits for 2016 2015, not December 31, 2016 2015. Mortgage Banking Activities secondary Mortgage servicing rights were periodically evaluated for impairment, beginning in 2016. no Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of outstanding principal and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Late fees and ancillary fees related to loan servicing are not material. The Company is exposed to interest rate risk on loans held for sale and rate-lock loan commitments (“IRLCs”). As market interest rates increase or decrease, the fair value of loans held for sale and rate-lock commitments will decrease or increase. The Company enters into derivative transactions principally to protect against the risk of adverse interest movements affecting the value of the Company’s committed loan sales pipeline. In order to mitigate the risk that a change in interest rates will result in a decrease in value of the Company’s IRLCs in the committed mortgage pipeline or its loans held for sale, the Company enters into mandatory forward loan sales contracts with secondary secondary Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff generally are reported at their outstanding unpaid principal balances net of the allowance for loan and lease losses. Interest income is recognized as income when earned on the accrual method. The accrual of interest is discontinued on a loan when management believes, after considering economic and business conditions, the borrower’s financial condition is such that collection of interest is doubtful. Interest received on nonaccrual loans is recorded as income or applied against principal according to management’s judgment as to the collectability of such principal. Loan origination fees and certain direct loan origination costs are being deferred and the net amount amortized as an adjustment of the related loan’s yield. Management is amortizing these amounts over the contractual life of the related loans. Allowance for Loan and Lease Losses The allowance for loan and lease losses represents the amount which management estimates is adequate to provide for probable loan losses inherent in the loan portfolio. The allowance method is used in providing for loan losses. Accordingly, all loan losses are charged to the allowance, and all recoveries are credited to it. The allowance for loan and lease losses is established through a provision for loan losses which is charged to operations. The provision is based on management’s periodic evaluation of the adequacy of the allowance for loan and lease losses, which encompasses the overall risk characteristics of the various portfolio segments, past experience with losses, the impact of economic conditions on borrowers, and other relevant factors. The estimates used in determining the adequacy of the allowance for loan and lease losses, including the amounts and timing of future cash flows expected on impaired loans, are particularly susceptible to significant change in the near term. A loan is considered impaired when it is probable the borrower will not repay the loan according to the original contractual terms of the loan agreement. Management has determined that first one four 90 first Mortgage loans secured by one four Premises and Equipment Land is carried at cost. Premises and equipment are stated at cost net of accumulated depreciation. Depreciation is computed on the straight-line method over the estimated useful lives of the assets, which range from 3 20 3 40 Goodwill The Company accounts for goodwill using a three No Intangible Assets Intangible assets include core deposit intangibles, which are a measure of the value of consumer demand and savings deposits acquired in business combinations accounted for as purchases. The core deposit intangibles are being amortized to expense over a 10 Bank-Owned Life Insurance (“BOLI”) The Company owns insurance on the lives of a certain group of key employees. The policies were purchased to help offset the increase in the costs of various fringe benefit plans including healthcare. The cash surrender value of these policies is included as an asset on the Consolidated Balance Sheet and any increases in the cash surrender value are recorded as noninterest income on the Consolidated Statement of Income. In the event of the death of an insured individual under these policies, the Company would receive a death benefit, which would be recorded as noninterest income. Other Real Estate Owned Real estate properties acquired through foreclosure are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. After foreclosure, management periodically performs valuations and the real estate is carried at the lower of cost or fair value less estimated cost to sell. Revenue and expenses from operations of the properties, gains or losses on sales and additions to the valuation allowance are included in operating results. Income Taxes The Company and its subsidiaries file a consolidated federal income tax return. Deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes. Earnings Per Share The Company provides dual presentation of basic and diluted earnings per share. Basic earnings per share are calculated utilizing net income as reported in the numerator and average shares outstanding in the denominator. The computation of diluted earnings per share differs in that the dilutive effects of any stock options, warrants, and convertible securities are adjusted in the denominator. Stock-Based Compensation The Company accounts for stock compensation based on the grant date fair value of all share-based payment awards that are expected to vest, including employee share options to be recognized as employee compensation expense over the requisite service period. For each of the years ended December 31, 2016, 2015, 2014, no December 31, 2016, no At year ended December 31, 2016, 900 December 31, 2015, 585 2014. For the years ended December 31, 2016 2015, 500 2,175 $6,000 $7,000, Cash Flow Information The Company has defined cash and cash equivalents as those amounts included in the Consolidated Balance Sheet captions as “Cash and due from banks” and “Federal funds sold” with original maturities of less than 90 Advertising Costs Advertising costs are expensed as incurred. Reclassification of Comparative Amounts Certain comparative amounts for prior years have been reclassified to conform to current-year presentations. Such reclassifications did not affect net income or retained earnings. Recent Accounting Pronouncements: In May 2014, 2014 09, Revenue from Contracts with Customers December 15, 2016, In August 2015, 2015 14, Revenue from Contract with Customers Topic 606 2014 09 one 2014 09 December 15, 2017, 2014 09 December 15, 2018, December 15, 2019. In January 2016, 2016 01, Financial Instruments – Overall (Subtopic 825 10): December 15, 2017, 960 965 December 15, 2018, December 15, 2019. may December 15, 2017, those fiscal years. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In February 2016, 2016 02 , Leases (Topic 842) one 12 may December 15, 2018, December 15, 2019, December 15, 2020. In March 2016, 2016 05, Derivatives and Hedging (Topic 815) 815 . 815 December 15, 2016, December 15, 2017, December 15, 2018. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 06, Derivatives and Hedging (Topic 815) four December 15, 2016, December 15, 2017, December 15, 2018. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 07, Investments – Equity Method and Joint Ventures (Topic 323) December 15, 2016. p interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 08, Revenue from Contracts with Customers (Topic 606). 606, 606; 2014 09, Revenue from Contracts with Customers (Topic 606), 2014 09. 2015 14, Revenue from Contracts with Customers (Topic 606): 2014 09 one ear. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 09, Compensation – Stock Compensation (Topic 718) 718 123 2004), Share-Based Payment December 15, 2016, December 15, 2017, December 15, 2018. he Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In April 2016, 2016 10, Revenue from Contracts with Customers (Topic 606). 606, 606. (1) (2) 606, 2014 09, Revenue from Contracts with Customers (Topic 606) r the amendments in this Update are the same as the effective date and transition requirements in Topic 606 2014 09). 2015 14, Revenue from Contracts with Customers (Topic 606) Deferral of the Effective Date 2014 09 one In May 2016, 2016 11, Revenue Recognition (Topic 605) 815 two March 3, 2016, In May 2016, 2016 12, Revenue from Contracts with Customers (Topic 606) 606, 606. 2014 09, Revenue from Contracts with Customers (Topic 606) 606 2014 09). 2015 14, Revenue from Contracts with Customers (Topic 606): 2014 09 one In June 2016, 2016 13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments 2016 13”), 2016 13 December 15, 2019, December 15, 2018. first In August 2016, 2016 15, Statement of Cash Flows (Topic 230): 2016 15”), eight may December 15, 2017, December 15, 2018, December 15, 2019. In October 2016, 2016 16, Income Taxes (Topic 740) 2016 16”), December 15, 2017, December 15, 2018, December 15, 2019. first In October 2016, 2016 17, Consolidation (Topic 810) 2016 17”), In October 2016, 2016 18, Statement of Cash Flows (Topic 230) 2016 18”), December 15, 2017, December 15, 2018, December 15, 2019. In December 2016, 2016 19, Technical Corrections and Improvements In December 2016, 2016 20 , Technical Corrections and Improvements to Topic 606, 2016 20”. 460, Guarantees 606. 2016 20 January 1, 2018. December 31, 2019, 2020. In January 2017, 2017 01, Business Combinations (Topic 805), 2017 01”, December 15, 2017, December 15, 2018, December 15, 2019. Accounting Standards Update 2017 03, 250) 323), September 22, 2016 November 17, 2016 In January 2017, 2017 03, 250) 323), September 22, 2016 November 17, 2016 11.M. 2014 09, 606); 2016 02, 842); 2016 13, 326):

Note 2 - Earnings Per Share

Note 2 - Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Earnings Per Share [Text Block]	2. EARNINGS PER SHARE There are no convertible securities that would affect the numerator in calculating basic and diluted earnings per share; therefore, net income as presented on the Consolidated Statement of Income will be used as the numerator. The following table sets forth the composition of the weighted-average common shares (denominator) used in the basic and diluted earnings per share computation for the year ended December 31. 2016 2015 2014 Weighted-average common shares outstanding 2,494,022 2,251,365 2,231,165 Average treasury stock shares (386,165 ) (236,399 ) (189,530 ) Weighted-average common shares and common stock equivalents used to calculate basic earnings per share 2,107,857 2,014,966 2,041,635 Additional common stock equivalents used to calculate diluted earnings per share 11,357 9,154 7,871 Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share 2,119,214 2,024,120 2,049,506 Options to purchase 29,324 $17.55 $37.48 December 31, 2016. 29,324 December 31, 2016. Options to purchase 31,949 $17.55 $40.24 December 31, 2015. 27,250 December 31, 2015. Options to purchase 46,451 $17.55 $40.24 December 31, 2014. 28,282 December 31, 2014.

Note 3 - Investment Securities

Note 3 - Investment Securities Available for Sale	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	3. INVESTMENT SECURITIES AVAILABLE FOR SALE The amortized cost, gross gains and losses and fair values of securities available for sale are as follows: December 31, 2016 Gross Gross Amortized Unrealized Unrealized Fair (Dollar amounts in thousands) Cost Gains Losses Value U.S. government agency securities $ 10,158 $ 174 $ (96 ) $ 10,236 Obligations of states and political subdivisions: Taxable 1,615 129 (4 ) 1,740 Tax-exempt 78,327 1,678 (522 ) 79,483 Mortgage-backed securities in government-sponsored entities 20,128 202 (261 ) 20,069 Private-label mortgage-backed securities 1,579 130 - 1,709 Total debt securities 111,807 2,313 (883 ) 113,237 Equity securities in financial institutions 750 389 - 1,139 Total $ 112,557 $ 2,702 $ (883 ) $ 114,376 December 31, 2015 Gross Gross Amortized Unrealized Unrealized Fair (Dollar amounts in thousands) Cost Gains Losses Value U.S. government agency securities $ 21,655 $ 245 $ (271 ) $ 21,629 Obligations of states and political subdivisions: Taxable 1,989 134 - 2,123 Tax-exempt 91,940 3,402 (175 ) 95,167 Mortgage-backed securities in government-sponsored entities 24,480 316 (272 ) 24,524 Private-label mortgage-backed securities 2,079 184 - 2,263 Total debt securities 142,143 4,281 (718 ) 145,706 Equity securities in financial institutions 750 64 - 814 Total $ 142,893 $ 4,345 $ (718 ) $ 146,520 The amortized cost and fair value of debt securities at December 31, 2016, may Amortized Fair (Dollar amounts in thousands) Cost Value Due in one year or less $ 3,693 $ 3,759 Due after one year through five years 9,487 9,796 Due after five years through ten years 11,870 12,248 Due after ten years 86,757 87,434 Total $ 111,807 $ 113,237 Investment securities with an approximate carrying value of $60.3 $68.8 December 31, 2016 2015, Proceeds from the sales of securities available for sale and the gross realized gains and losses for the years ended December 31, 2016 2014, 2016 2015 2014 Proceeds from sales $ 9,063 $ 15,686 $ 8,383 Gross realized gains 309 440 306 Gross realized losses (6 ) (117 ) (58 ) The following tables show the Company’s gross unrealized losses and fair value, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position. December 31, 2016 Less than Twelve Months Twelve Months or Greater Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized (Dollar amounts in thousands) Value Losses Value Losses Value Losses U.S. government agency securities $ 3,803 $ (47 ) $ 1,316 $ (49 ) $ 5,119 $ (96 ) Obligations of states and political subdivisions Tax-exempt 23,554 (522 ) - - 23,554 (522 ) Taxable 502 (4 ) - - 502 (4 ) Mortgage-backed securities in government-sponsored entities 9,066 (126 ) 4,438 (135 ) 13,504 (261 ) Total $ 36,925 $ (699 ) $ 5,754 $ (184 ) $ 42,679 $ (883 ) December 31, 2015 Less than Twelve Months Twelve Months or Greater Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized (Dollar amounts in thousands) Value Losses Value Losses Value Losses U.S. government agency securities $ 3,818 $ (57 ) $ 10,872 $ (214 ) $ 14,690 $ (271 ) Obligations of states and political subdivisions Tax-exempt 1,268 (9 ) 9,394 (166 ) 10,662 (175 ) Mortgage-backed securities in government-sponsored entities 8,725 (86 ) 6,685 (186 ) 15,410 (272 ) Total $ 13,811 $ (152 ) $ 26,951 $ (566 ) $ 40,762 $ (718 ) There were 67 December 31, 2016. On a quarterly basis, the Company performs an assessment to determine whether there have been any events or economic circumstances indicating that a security with an unrealized loss has suffered other-than-temporary impairment (“OTTI”). A debt security is considered impaired if the fair value is less than its amortized cost basis at the reporting date. The accounting literature requires the Company to assess whether the unrealized loss is other than temporary. For equity securities where the fair value has been significantly below cost for one The Company has asserted that at December 31, 2016 2015, may Debt securities issued by U.S. government agencies, U.S. government-sponsored enterprises, and state and political subdivisions accounted for more than 97.5% December 31, 2016, no ● The length of time and the extent to which the fair value has been less than the amortized cost basis. ● Changes in the near term prospects of the underlying collateral of a security such as changes in default rates, loss severity given default and significant changes in prepayment assumptions. ● The level of cash flows generated from the underlying collateral supporting the principal and interest payments of the debt securities. ● Any adverse change to the credit conditions and liquidity of the issuer, taking into consideration the latest information available about the overall financial condition of the issuer, credit ratings, recent legislation, and government actions affecting the issuer’s industry and actions taken by the issuer to deal with the present economic climate.

Note 4 - Loans and Related Allo

Note 4 - Loans and Related Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	4. LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES Major classifications of loans at December 31 2016 2015 Commercial and industrial $ 60,630 $ 42,536 Real estate - construction 23,709 22,137 Real estate - mortgage: Residential 270,830 232,478 Commercial 249,490 231,701 Consumer installment 4,481 4,858 609,140 533,710 Less allowance for loan and lease losses (6,598 ) (6,385 ) Net loans $ 602,542 $ 527,325 The Company’s primary business activity is with customers located within its local trade area, eastern Geauga County, and contiguous counties to the north, east, and south. The Company also serves the central Ohio market with offices in Dublin, Sunbury and Westerville, Ohio. Commercial, residential, consumer, and agricultural loans are granted. Although the Company has a diversified loan portfolio at December 31, 2016 2015, The following tables summarize the primary segments of the loan portfolio and the allowance for loan and lease losses as of December 31, 2016 2015 Real Estate- Mortgage December 31, 2016 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Loans: Individually evaluated for impairment $ 1,190 $ 913 $ 3,135 $ 7,187 $ 5 $ 12,430 Collectively evaluated for impairment 59,440 22,796 267,695 242,303 4,476 596,710 Total loans $ 60,630 $ 23,709 $ 270,830 $ 249,490 $ 4,481 $ 609,140 Real estate- Mortgage December 31, 2015 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Loans: Individually evaluated for impairment $ 1,808 $ 1,787 $ 3,881 $ 6,199 $ 6 $ 13,681 Collectively evaluated for impairment 40,728 20,350 228,597 225,502 4,852 520,029 Total loans $ 42,536 $ 22,137 $ 232,478 $ 231,701 $ 4,858 $ 533,710 Real Estate- Mortgage December 31, 2016 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Allowance for loan and lease losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 90 $ - $ 251 $ 186 $ - $ 527 Collectively evaluated for impairment 358 172 2,567 2,949 25 6,071 Total ending allowance balance $ 448 $ 172 $ 2,818 $ 3,135 $ 25 $ 6,598 Real Estate- Mortgage December 31, 2015 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Allowance for loan and lease losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 388 $ 130 $ 276 $ 39 $ - $ 833 Collectively evaluated for impairment 479 146 2,863 2,039 25 5,552 Total ending allowance balance $ 867 $ 276 $ 3,139 $ 2,078 $ 25 $ 6,385 The Company’s loan portfolio is segmented to a level that allows management to monitor risk and performance. The portfolio is segmented into Commercial and Industrial (“C&I”), Real Estate Construction, Real Estate - Mortgage which is further segmented into Residential and Commercial real estate, and Consumer Installment Loans. The C&I loan segment consists of loans made for the purpose of financing the activities of commercial customers. The residential mortgage loan segment consists of loans made for the purpose of financing the activities of residential homeowners. The commercial mortgage loan segment consists of loans made for the purpose of financing the activities of commercial real estate owners and operators. The consumer loan segment consists primarily of installment loans and overdraft lines of credit connected with customer deposit accounts. Management evaluates individual loans in all of the commercial segments for possible impairment if the loan is greater than $150,000 90 Once the determination has been made that a loan is impaired, the determination of whether a specific allocation of the allowance is necessary is measured by comparing the recorded investment in the loan to the fair value of the loan using one three The following tables present impaired loans by class, segregated by those for which a specific allowance was required and those for which a specific allowance was not necessary (in thousands): December 31, 2016 Impaired Loans Recorded Unpaid Principal Related Investment Balance Allowance With no related allowance recorded: Commercial and industrial $ 319 $ 318 $ - Real estate - construction 913 909 - Real estate - mortgage: Residential 2,142 2,140 - Commercial 2,031 2,027 - Total $ 5,405 $ 5,394 $ - With an allowance recorded: Commercial and industrial $ 871 868 $ 90 Real estate - construction - - - Real estate - mortgage: Residential 993 991 251 Commercial 5,156 5,147 186 Consumer installment 5 5 - Total $ 7,025 $ 7,011 $ 527 Total: Commercial and industrial $ 1,190 $ 1,186 $ 90 Real estate - construction 913 909 - Real estate - mortgage: Residential 3,135 3,131 251 Commercial 7,187 7,174 186 Consumer installment 5 5 - Total $ 12,430 $ 12,405 $ 527 December 31, 2015 Impaired Loans Recorded Unpaid Principal Related Investment Balance Allowance With no related allowance recorded: Commercial and industrial $ 1,027 $ 1,025 $ - Real estate - construction 1,657 1,651 - Real estate - mortgage: Residential 2,445 2,443 - Commercial 2,337 2,335 - Consumer installment - - - Total $ 7,466 $ 7,454 $ - With an allowance recorded: Commercial and industrial $ 781 $ 781 $ 388 Real estate - construction 130 130 130 Real estate - mortgage: Residential 1,436 1,436 276 Commercial 3,862 3,846 39 Consumer installment 6 6 - Total $ 6,215 $ 6,199 $ 833 Total: Commercial and industrial $ 1,808 $ 1,806 $ 388 Real estate - construction 1,787 1,781 130 Real estate - mortgage: Residential 3,881 3,879 276 Commercial 6,199 6,181 39 Consumer installment 6 6 - Total $ 13,681 $ 13,653 $ 833 The tables above include troubled debt restructuring totaling $6.7 $3.1 December 31, 2016 2015, The following table presents interest income by class, recognized on impaired loans (in thousands): As of December 31, 2016 As of December 31, 2015 As of December 31, 2014 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Commercial and industrial $ 1,211 $ 35 $ 1,468 $ 100 $ 1,989 $ 85 Real estate - construction 1,281 62 2,407 115 3,631 154 Real estate - mortgage: Residential 3,529 178 4,356 160 5,331 171 Commercial 7,384 553 5,203 350 5,998 229 Consumer installment 6 11 6 - 11 1 Total $ 13,410 $ 839 $ 13,440 $ 725 $ 16,960 $ 640 Troubled Debt Restructuring (TDR) describes loans on which the bank has granted concessions for reasons related to the customer’s financial difficulties. Such concessions may one ● reduction in the interest rate to below market rates ● extension of repayment requirements beyond normal terms ● reduction of the principal amount owed ● reduction of accrued interest due ● acceptance of other assets in full or partial payment of a debt In each case the concession is made due to deterioration in the borrower’s financial condition, and the new terms are less stringent than those required on a new loan with similar risk. The following tables present the number of loan modifications by class, the corresponding recorded investment, and the subsequently defaulted modifications (in thousands): December 31, 2016 Number of Contracts Pre-Modification Post-Modification Term Outstanding Recorded Outstanding Recorded Troubled Debt Restructurings Modification Other Total Investment Investment Commercial and industrial 5 - 5 $ 610 $ 610 Residential real estate 4 - 4 166 166 Commercial real estate 1 - 1 311 311 December 31, 2015 Number of Contracts Pre-Modification Post-Modification Term Outstanding Recorded Outstanding Recorded Troubled Debt Restructurings Modification Other Total Investment Investment Commercial and industrial 6 - 6 $ 434 $ 434 Real estate construction 1 - 1 181 181 Residential real estate 5 1 6 515 535 Commercial real estate 1 - 1 270 270 December 31, 2014 Number of Contracts Pre-Modification Post-Modification Term Outstanding Recorded Outstanding Recorded Troubled Debt Restructurings Modification Other Total Investment Investment Residential real estate 3 - 3 $ 140 $ 140 Commercial real estate 1 - 1 48 48 Consumer 1 - 1 6 6 December 31, 2016 Number of Recorded Troubled Debt Restructurings subsequently defaulted Contracts Investment Commercial and industrial 2 $ 7 Real estate construction 1 - Residential real estate 4 278 Commercial real estate 1 119 December 31, 2015 Number of Recorded Troubled Debt Restructurings subsequently defaulted Contracts Investment Commercial and industrial 2 $ 14 Real estate construction 1 130 December 31, 2014 Number of Recorded Troubled Debt Restructurings subsequently defaulted Contracts Investment Residential real estate 1 $ 15 Management uses a nine first five 90 To help ensure that risk ratings are accurate and reflect the present and future capacity of borrowers to repay a loan as agreed, the Company has a structured loan-rating process with several layers of internal and external oversight. Generally, consumer and residential mortgage loans are included in the Pass categories unless a specific action, such as bankruptcy, repossession, or death, occurs to raise awareness of a possible credit event. The Company’s Commercial Loan Officers are responsible for the timely and accurate risk rating of the loans in their portfolios at origination and on an ongoing basis with the Chief Credit Officer ultimately responsible for accurate and timely risk ratings. The Credit Department performs an annual review of all commercial relationships $1,000,000 $250,000 $125,000. The following tables present the classes of the loan portfolio summarized by the aggregate Pass rating and the criticized categories of Special Mention, Substandard, and Doubtful within the internal risk rating system as of December 31, 2016 2015 Special Total Pass Mention Substandard Doubtful Loans December 31, 2016 Commercial and industrial $ 58,539 $ 663 $ 1,428 $ - $ 60,630 Real estate - construction 23,541 144 24 - 23,709 Real estate - mortgage: Residential 264,481 428 5,921 - 270,830 Commercial 240,678 4,422 4,390 - 249,490 Consumer installment 4,467 - 14 - 4,481 Total $ 591,706 $ 5,657 $ 11,777 $ - $ 609,140 Special Total Pass Mention Substandard Doubtful Loans December 31, 2015 Commercial and industrial $ 40,560 $ 242 $ 1,734 $ - $ 42,536 Real estate - construction 22,007 - - 130 22,137 Real estate - mortgage: Residential 225,945 728 5,805 - 232,478 Commercial 219,331 4,327 8,043 - 231,701 Consumer installment 4,854 - 4 - 4,858 Total $ 512,697 $ 5,297 $ 15,586 $ 130 $ 533,710 Management further monitors the performance and credit quality of the loan portfolio by analyzing the age of the portfolio as determined by the length of time a recorded payment is past due. The following tables present the classes of the loan portfolio summarized by the aging categories of loans and nonaccrual loans as of December 31, 2016 2015 30-59 Days 60-89 Days 90 Days+ Total Total Current Past Due Past Due Past Due Past Due Loans December 31, 2016 Commercial and industrial $ 60,407 $ 17 $ 2 $ 204 $ 223 $ 60,630 Real estate - construction 23,709 - - - - 23,709 Real estate - mortgage: Residential 268,041 1,909 207 673 2,789 270,830 Commercial 249,081 92 - 317 409 249,490 Consumer installment 4,465 - 10 6 16 4,481 Total $ 605,703 $ 2,018 $ 219 $ 1,200 $ 3,437 $ 609,140 30-59 Days 60-89 Days 90 Days+ Total Total Current Past Due Past Due Past Due Past Due Loans December 31, 2015 Commercial and industrial $ 41,544 $ 225 $ 26 $ 741 $ 992 $ 42,536 Real estate - construction 22,137 - - - - 22,137 Real estate - mortgage: Residential 229,725 1,482 92 1,179 2,753 232,478 Commercial 230,903 189 - 609 798 231,701 Consumer installment 4,837 16 3 2 21 4,858 Total $ 529,146 $ 1,912 $ 121 $ 2,531 $ 4,564 $ 533,710 The following tables present the classes of the loan portfolio summarized by nonaccrual loans and loans 90 December 31, 2016 2015 90+ Days Past Nonaccrual Due and Accruing December 31, 2016 Commercial and industrial $ 454 $ - Real estate - construction - - Real estate - mortgage: Residential 4,034 - Commercial 1,409 - Consumer installment 6 - Total $ 5,903 $ 0 90+ Days Past Nonaccrual Due and Accruing December 31, 2015 Commercial and industrial $ 1,450 $ - Real estate - construction 130 - Real estate - mortgage: Residential 4,122 - Commercial 1,842 - Consumer installment 1 2 Total $ 7,545 $ 2 Interest income that would have been recorded had these loans not been placed on nonaccrual status was $309,000 2016, $259,000 2015, $207,000 2014. An allowance for loan and lease losses (“ALLL”) is maintained to absorb losses from the loan portfolio. The ALLL is based on management’s continuing evaluation of the risk characteristics and credit quality of the loan portfolio, assessment of current economic conditions, diversification and size of the portfolio, adequacy of collateral, past and anticipated loss experience, and the amount of nonperforming loans. The Company’s methodology for determining the ALLL is based on the requirements of ASC Section 310 10 35 450 20 two Loans that are collectively evaluated for impairment are analyzed, with general allowances being made as appropriate. For general allowances, historical loss trends are used in the estimation of losses in the current portfolio. These historical loss amounts are modified by other qualitative factors. The classes described above, which are based on the purpose code assigned to each loan, provide the starting point for the ALLL analysis. Management tracks the historical net charge-off activity at the purpose code level. A historical charge-off factor is calculated utilizing the last twelve Management has identified a number of additional qualitative factors which it uses to supplement the historical charge-off factor, because these factors are likely to cause estimated credit losses associated with the existing loan pools to differ from historical loss experience. The additional factors that are evaluated quarterly and updated using information obtained from internal, regulatory, and governmental sources are: national and local economic trends and conditions; levels of and trends in delinquency rates and nonaccrual loans; trends in volumes and terms of loans; effects of changes in lending policies; experience, ability, and depth of lending staff; value of underlying collateral; and concentrations of credit from a loan type, industry, and/or geographic standpoint. Management reviews the loan portfolio on a quarterly basis using a defined, consistently applied process in order to make appropriate and timely adjustments to the ALLL. When information confirms all or part of specific loans to be uncollectible, these amounts are promptly charged off against the ALLL. The following tables summarize the primary segments of the loan portfolio (in thousands): Commercial and industrial Real estate- construction Real estate- residential mortgage Real estate- commercial mortgage Consumer installment Total ALLL balance at December 31, 2015 $ 867 $ 276 $ 3,139 $ 2,078 $ 25 $ 6,385 Charge-offs (237 ) - (414 ) (70 ) (22 ) (743 ) Recoveries 90 - 141 140 15 386 Provision (272 ) (104 ) (48 ) 987 7 570 ALLL balance at December 31, 2016 $ 448 $ 172 $ 2,818 $ 3,135 $ 25 $ 6,598 Commercial and industrial Real estate- construction Real estate- residential mortgage Real estate- commercial mortgage Consumer installment Total ALLL balance at December 31, 2014 $ 642 $ 868 $ 3,703 $ 1,576 $ 57 $ 6,846 Charge-offs (280 ) (385 ) (425 ) (92 ) (15 ) (1,197 ) Recoveries 207 - 186 5 23 421 Provision 298 (207 ) (325 ) 589 (40 ) 315 ALLL balance at December 31, 2015 $ 867 $ 276 $ 3,139 $ 2,078 $ 25 $ 6,385 The decrease in the ALLL balance for commercial and industrial loans was largely due to a $237,000 $414,000 first 7.7%

Note 5 - Other Real Estate Owne

Note 5 - Other Real Estate Owned ("OREO")	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Other Real Estate Owned (OREO) [Text Block]	5. OTHER REAL ESTATE OWNED (“OREO”) OREO comprises foreclosed assets acquired in settlement of loans and is carried at fair value less estimated cost to sell and is included in other real estate owned on the Consolidated Balance Sheet. As of December 31, 2016 December 31, 2015, $934,000 $1,412,000, December 31, 2016, $1.0

Note 6 - Premises and Equipment

Note 6 - Premises and Equipment	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	6. PREMISES AND EQUIPMENT Major classifications of premises and equipment at December 31: (Dollar amounts in thousands) 2016 2015 Land and land improvements $ 2,891 $ 1,943 Building and leasehold improvements 12,081 11,414 Furniture, fixtures, and equipment 5,404 4,853 20,376 18,210 Less accumulated depreciation and amortization 9,173 8,438 Total $ 11,203 $ 9,772 Depreciation and amortization charged to operations was $735,000 2016, $715,000 2015, $750,000 2014.

Note 7 - Goodwill and Intangibl

Note 7 - Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	7. GOODWILL AND INTANGIBLE ASSETS Goodwill totaled $4,559,000 December 31, 2016, 2015. $36,000 $76,000 December 31, 2016, 2015, $360,000 $320,000 December 31, 2016, 2015. Core deposit intangible assets are amortized on a straight-line basis over their estimated lives of ten $40,000 2016, 2015, 2014, December 31, 2016, $36,000 2017.

Note 8 - Other Assets

Note 8 - Other Assets	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Other Assets Disclosure [Text Block]	8. OTHER ASSETS The components of other assets at the years ended December 31: (Dollar amounts in thousands) 2016 2015 Restricted stock $ 2,204 $ 1,887 Accrued interest on investment securities 812 1,010 Accrued interest on loans 1,614 1,377 Deferred tax asset, net 1,607 959 Other 1,265 2,244 Total $ 7,502 $ 7,477

Note 9 - Deposits

Note 9 - Deposits	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Deposit Liabilities Disclosures [Text Block]	9. DEPOSITS Time deposits at December 31, 2016, $76.8 $16.3 $8.4 $46.5 $41.4 2017, 2018, 2019, 2020, 2021, The aggregate of all time deposit accounts of $250,000 $27.8 $29.0 December 31, 2016 2015,

Note 10 - Short-term Borrowings

Note 10 - Short-term Borrowings	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Short-term Debt [Text Block]	10. SHORT-TERM BORROWINGS The year ended December 31 (Dollar amounts in thousands) 2016 2015 Balance at year-end $ 68,359 $ 35,825 Average balance outstanding 37,130 11,768 Maximum month-end balance 68,359 35,825 Weighted-average rate at year-end 0.61 % 1.37 % Weighted-average rate during the year 0.89 % 1.65 % Average balances outstanding during the year represent daily average balances, and average interest rates represent interest expense divided by the related average balance. The Company maintains a $6.0 4.00%, $10.0 3.93%, $4.0 4.03%. December 31, 2016, 2015, 2014, $0, $9.5 $3.1 The following table provides additional detail regarding short-term borrowed funds. Repurchase Agreements (Sweep) Accounted for as Secured Borrowings (in thousands) Overnight and Continuous December 31, 2016 December 31, 2015 Repurchase agreements: Mortgage-backed securities in government sponsored entities $ 2,667 $ 1,877 Tax-exempt obligations of states and political subdivisions 968 - U.S. Government agency securities - 1,052 Gross amount of recognized liabilities $ 3,635 $ 2,929

Note 11 - Other Borrowings

Note 11 - Other Borrowings	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Other Borrowings [Text Block]	11. OTHER BORROWINGS Other borrowings consist of advances from the FHLB and subordinated debt as follows: Weighted- Stated interest (Dollar amounts in thousands) Maturity range average rate range Description from to interest rate from to 2016 2015 Fixed-rate amortizing 07/01/17 10/01/28 4.02 % 2.99 % 4.47 % $ 1,189 $ 1,691 Junior subordinated debt 12/21/37 12/21/37 2.20 % 2.20 2.20 8,248 8,248 Total $ 9,437 $ 9,939 The scheduled maturities of other borrowings are as follows: (Dollar amounts in thousands) Weighted- Year Ending December 31, Amount Average Rate 2017 373 4.00 % 2018 252 4.02 % 2019 155 4.04 % 2020 116 4.04 % 2021 87 4.05 % Beyond 2021 8,454 2.25 % Total $ 9,437 2.37 % Fixed-rate amortizing advances from the FHLB require monthly principal and interest payments and an annual 20 20 first $184.9 December 31, 2016. The Company formed a special purpose entity (“Entity”) to issue $8,000,000 $248,000 1.67%. may December 2006 $8,248,000

Note 12 - Other Liabilities

Note 12 - Other Liabilities	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Other Liabilities Disclosure [Text Block]	12. OTHER LIABILITIES The components of other liabilities are as follows: 2016 2015 (Dollar amounts in thousands) Accrued interest payable $ 395 $ 395 Supplemental Executive Retirement Plan 1,125 1,091 Accrued salary expense 768 689 Other 843 449 Total $ 3,131 $ 2,624

Note 13 - Income Taxes

Note 13 - Income Taxes	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Income Tax Disclosure [Text Block]	13. INCOME TAXES The provision for federal income taxes consists of: (Dollar amounts in thousands) 2016 2015 2014 Current payable $ 1,998 $ 1,004 $ 2,146 Deferred (93 ) 558 (154 ) Total provision $ 1,905 $ 1,562 $ 1,992 The tax effects of deductible and taxable temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are as follows: (Dollar amounts in thousands) 2016 2015 Deferred tax assets: Allowance for loan and lease losses $ 2,243 $ 2,171 Supplemental retirement plan 382 371 Investment security basis adjustment 66 66 Nonaccrual interest income 456 415 Deferred origination fees, net - 12 OREO adjustments 26 92 Accrued compensation 261 234 Other 82 23 Gross deferred tax assets 3,516 3,384 Deferred tax liabilities: Premises and equipment 445 514 Net unrealized gain on securities 618 1,233 FHLB stock dividends 225 225 Intangibles 449 401 Mortgage servicing rights 103 68 Deferred origination fees, net 63 - Other 6 44 Gross deferred tax liabilities 1,909 2,485 Net deferred tax assets $ 1,607 $ 899 No December 31, 2016 2015, The reconciliation between the federal statutory rate and the Company’s effective consolidated income tax rate is as follows: (Dollar amounts in thousands) 2016 2015 2014 % of % of % of Pretax Pretax Pretax Amount Income Amount Income Amount Income Provision at statutory rate $ 2,829 34.0 % $ 2,866 34.0 % $ 3,119 34.0 % Tax-free income (1,177 ) (14.1 ) (1,347 ) (15.9 ) (1,187 ) (12.9 ) Nondeductible interest expense 32 0.4 34 0.4 37 0.4 Nondeductible merger-related expense 186 2.2 - 0.0 - 0.0 Other 35 0.4 9 0.0 23 0.2 Actual tax expense and effective rate $ 1,905 22.9 % $ 1,562 18.5 % $ 1,992 21.7 % ASC 740 ‐ 10 ‐ likely ‐ than ‐ not recognition threshold is measured at the largest amount of benefit that is greater than 50 ‐ likely ‐ than ‐ not recognition threshold should be recognized in the first ‐ likely ‐ than ‐ not recognition threshold should be derecognized in the first At December 31, 2016 December 31, 2015, no 12 The Company and the Bank are subject to U.S. federal income tax as well as an income tax in the state of Ohio, and the Bank is subject to a capital ‐ based franchise tax in the state of Ohio. The Company and the Bank are no longer subject to examination by taxing authorities for years before December 31, 2013.

Note 14 - Employee Benefits

Note 14 - Employee Benefits	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Compensation and Employee Benefit Plans [Text Block]	14. EMPLOYEE BENEFITS Retirement Plan The Bank maintains section 401(k) one 50 6 six second 20 2016, 2015, 2014, $156,000, $156,000, $143,000, Supplemental Retirement Plan Until 2001, ten five 25 three The following table illustrates the components of the projected payments for the Directors’ Retirement Plan for the years ended: Projected Payments 2017 $ 23,000 2018 18,000 2019 12,000 2020 10,000 2021 2,000 Total $ 65,000 The retirement plan is available solely for nonemployee directors of The Middlefield Banking Company, but the Bank has not entered into any additional retirement arrangements for nonemployee directors since 2001. Executive Deferred Compensation Plan The Company maintains an Executive Deferred Compensation Plan (the “Plan”) to provide post-retirement payments to members of senior management. The Plan agreements are noncontributory, defined contribution arrangements that provide supplemental retirement income benefits to several officers, with contributions made solely by the Bank. During 2016, 2015, 2014, $99,000, $65,000, $115,000, Stock Option and Restricted Stock Plan T he Company maintains a stock option and restricted stock plan (“the Plan”) for granting incentive stock options, nonqualified stock options, and restricted stock to key officers and employees and nonemployee directors of the Company. A total of 160,000 ten The following table presents share data related to the outstanding options: Weighted- Weighted- average average Exercise Exercise 2016 Price 2015 Price Outstanding, January 1 $ 31,949 $ 25.03 $ 46,451 $ 27.90 Expired (2,125 ) 40.24 (10,802 ) 36.93 Exercised (500 ) 23.00 (2,175 ) 21.31 Forfeited - - (1,525 ) 33.53 Outstanding, December 31 $ 29,324 $ 23.67 $ 31,949 $ 25.03 Exercisable, December 31 $ 29,324 $ 23.67 $ 31,949 $ 25.03 The following table summarizes the characteristics of stock options at December 31, 2016: Outstanding Exercisable Contractual Average Average Exercise Average Exercise Exercise Grant Date Price Shares Life Price Shares Price May 16, 2007 37.48 1,337 0.36 37.48 1,337 37.48 December 10, 2007 37.00 1,950 0.93 37.00 1,950 37.00 January 2, 2008 36.25 1,337 1.00 36.25 1,337 36.25 November 10, 2008 23.00 16,500 1.85 23.00 16,500 23.00 May 9, 2011 17.55 8,200 4.35 17.55 8,200 17.55 29,324 29,324 No December 31, 2016 2015.

Note 15 - Commitments

Note 15 - Commitments	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	15. COMMITMENTS In the normal course of business, there are various outstanding commitments and certain contingent liabilities which are not reflected in the accompanying consolidated financial statements. These commitments and contingent liabilities represent financial instruments with off-balance sheet risk. The contract or notional amounts of those instruments reflect the extent of involvement in particular types of financial instruments which were composed of the following: (Dollar amounts in thousands) 2016 2015 Commitments to extend credit $ 161,646 $ 112,134 Standby letters of credit 1,416 4,404 Total $ 163,062 $ 116,538 These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Consolidated Balance Sheet. The Company’s exposure to credit loss, in the event of nonperformance by the other parties to the financial instruments, is represented by the contractual amounts as disclosed. The Company minimizes its exposure to credit loss under these commitments by subjecting them to credit approval and review procedures and collateral requirements as deemed necessary. Commitments generally have fixed expiration dates within one Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third third one Commitments to fund certain mortgage loans (interest rate locks) to be sold into the secondary December 31, 2016. Leasing Arrangements The Company leases certain of its banking facilities under operating leases which contain certain renewal options. As of December 31, 2016, 2017 $ 324 2018 325 2019 320 2020 332 2021 321 Thereafter 1,749 $ 3,371 The above amounts represent minimum rentals not adjusted for possible future increases due to escalation provisions and assume that all renewal option periods will be exercised by the Company. Rent expense approximated $285,000, $288,000, $269,000 December 31, 2016, 2015, 2014,

Note 16 - Regulatory Restrictio

Note 16 - Regulatory Restrictions	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Banking and Thrift Disclosure [Text Block]	16. REGULATORY RESTRICTIONS The Company is subject to the regulatory requirements of the Federal Reserve System as a bank holding company. The bank is subject to regulations of the Federal Deposit Insurance Corporation (“FDIC”) and the State of Ohio, Division of Financial Institutions. Since the establishment in the fourth 2009 $5.8 Cash Requirements The Cleveland district Federal Reserve Bank requires the Company to maintain certain average reserve balances. As of December 31, 2016 2015, $8.2 $6.9 Loans Federal law prevents the Company from borrowing from the Bank unless the loans are secured by specific obligations. Further, such secured loans are limited in amount of 10 Dividends MBC is subject to dividend restrictions that generally limit the amount of dividends that can be paid by an Ohio state-chartered bank. Under the Ohio Banking Code, cash dividends may two 2016 $8.4 2017 second January 12, 2019,

Note 17 - Regulatory Capital

Note 17 - Regulatory Capital	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Regulatory Capital Requirements under Banking Regulations [Text Block]	17. REGULATORY CAPITAL The Bank and Company are subject to regulatory capital requirements administered by banking agencies. Capital adequacy guidelines and prompt corrective-action regulations involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weightings, and other factors and the regulators can lower classifications in certain cases. Failure to meet various capital requirements can initiate regulatory action that could have a direct material effect on the financial statements. Management believes as of December 31, 2016, The prompt corrective action regulations provide five The Basel III Capital Rules became effective for the Bank on January 1, 2015 January 1, 2016 0.625% four January 1, 2.5% January 1, 2019). 1 The following tables present actual and required capital ratios as of December 31, 2016 2015, As of December 31, 2016 Leverage Tier 1 Risk Based Common Equity Tier 1 Total Risk Based The Middlefield Banking Company 9.46 % 13.03 % 13.03 % 14.25 % Middlefield Banc Corp. 9.27 % 13.07 % 13.07 % 15.75 % Adequately capitalized ratio 4.00 % 6.00 % 4.50 % 8.00 % Adequately capitalized ratio plus capital conservation buffer 4.00 % 8.50 % 7.00 % 10.50 % Well-capitalized ratio (Bank only) 5.00 % 8.00 % 6.50 % 10.00 % As of December 31, 2015 Leverage Tier 1 Risk Based Common Equity Tier 1 Total Risk Based The Middlefield Banking Company 9.23 % 12.52 % 12.52 % 13.73 % Middlefield Banc Corp. 8.69 % 12.00 % 12.00 % 13.20 % Adequately capitalized ratio 4.00 % 6.00 % 4.50 % 8.00 % Adequately capitalized ratio plus capital conservation buffer 4.00 % 8.50 % 7.00 % 10.50 % Well-capitalized ratio (Bank only) 5.00 % 8.00 % 6.50 % 10.00 %

Note 18 - Fair Value Disclosure

Note 18 - Fair Value Disclosure Measurements	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Fair Value Disclosures [Text Block]	18. FAIR VALUE DISCLOSURE MEASUREMENTS The following disclosures show the hierarchal disclosure framework associated with the level of pricing observations utilized in measuring assets and liabilities at fair value. The three Level I: Quoted prices are available in active markets for identical assets or liabilities as of the reported date. Level II: Pricing inputs are other than the quoted prices in active markets, which are either directly or indirectly observable as of the reported date. The nature of these assets and liabilities includes items for which quoted prices are available but traded less frequently and items that are fair-valued using other financial instruments, the parameters of which can be directly observed. Level III: Valuations derived from valuation techniques in which one This hierarchy requires the use of observable market data when available. The following tables present the assets measured on a recurring basis on the Consolidated Balance Sheet at their fair value as of December 31, 2016 2015, December 31, 2016 (Dollar amounts in thousands) Level I Level II Level III Total Assets measured on a recurring basis: U.S. government agency securities $ - $ 10,236 $ - $ 10,236 Obligations of states and political subdivisions - 81,223 - 81,223 Mortgage-backed securities in government- sponsored entities - 20,069 - 20,069 Private-label mortgage-backed securities - 1,709 - 1,709 Total debt securities - 113,237 - 113,237 Equity securities in financial institutions - 1,139 - 1,139 Total $ - $ 114,376 $ - $ 114,376 December 31, 2015 Level I Level II Level III Total Assets measured on a recurring basis: U.S. government agency securities $ - $ 21,629 $ - $ 21,629 Obligations of states and political subdivisions - 97,290 - 97,290 Mortgage-backed securities in government- sponsored entities - 24,524 - 24,524 Private-label mortgage-backed securities - 2,263 - 2,263 Total debt securities - 145,706 - 145,706 Equity securities in financial institutions - 814 - 814 Total $ - $ 146,520 $ - $ 146,520 Financial instruments are considered Level III when their values are determined using pricing models, discounted cash flow methodologies or similar techniques and at least one The following tables present the assets measured on a non-recurring basis on the Consolidated Balance Sheet at their fair value by level within the fair value hierarchy. Impaired loans that are collateral dependent are written down to fair value through the establishment of specific reserves. Techniques used to value the collateral that secure the impaired loan include quoted market prices for identical assets classified as Level I inputs and observable inputs, employed by certified appraisers, for similar assets classified as Level II inputs. In cases where valuation techniques included inputs that are unobservable and are based on estimates and assumptions developed by management based on the best information available under each circumstance, the asset valuation is classified as Level III inputs. December 31, 2016 (Dollar amounts in thousands) Level I Level II Level III Total Assets measured on a non-recurring basis: Impaired loans $ - $ - $ 6,498 $ 6,498 Other real estate owned - - 511 511 December 31, 2015 Level I Level II Level III Total Assets measured on a non-recurring basis: Impaired loans $ - $ - $ 12,848 $ 12,848 Other real estate owned - - 1,412 1,412 The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company uses Level III inputs to determine fair value: Quantitative Information about Level III Fair Value Measurements (Dollar amounts in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) December 31, 2016 Impaired loans $ 4,928 Discounted cash flow Discount rate 3.1% to 7.0% (5.1%) 1,570 Appraisal of collateral (1) Appraisal adjustments (2) 0.0% to 59.7% (28.2%) Other real estate owned $ 511 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 10.0% Quantitative Information about Level III Fair Value Measurements (Dollar amounts in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) December 31, 2015 Impaired loans $ 6,867 Discounted cash flow Discount rate 3.1% to 7.9% (5.0%) $ 5,981 Appraisal of collateral (1) Appraisal adjustment (2) 0.0% to 87.1% (23.3%) Other real estate owned $ 1,412 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 10.0% (7.3%) (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 (2) Appraisals may The estimated fair value of the Company’s financial instruments is as follows: December 31, 2016 Carrying Total Value Level I Level II Level III Fair Value (in thousands) Financial assets: Cash and cash equivalents $ 32,495 $ 32,495 $ - $ - $ 32,495 Investment securities available for sale 114,376 - 114,376 - 114,376 Loans held for sale 634 - 634 - 634 Net loans 602,542 - - 604,447 604,447 Bank-owned life insurance 13,540 13,540 - - 13,540 Restricted stock 2,204 2,204 - - 2,204 Accrued interest receivable 2,426 2,426 - - 2,426 Financial liabilities: Deposits $ 629,934 $ 440,500 $ - $ 189,871 $ 630,371 Short-term borrowings 68,359 68,359 - - 68,359 Other borrowings 9,437 - 9,512 9,512 Accrued interest payable 395 395 - - 395 December 31, 2015 Carrying Total Value Level I Level II Level III Fair Value (in thousands) Financial assets: Cash and cash equivalents $ 23,750 $ 23,750 $ - $ - $ 23,750 Investment securities available for sale 146,520 - 146,520 - 146,520 Loans held for sale 1,107 - 1,107 - 1,107 Net loans 527,325 - - 534,021 534,021 Bank-owned life insurance 13,141 13,141 - - 13,141 Restricted stock 1,887 1,887 - - 1,887 Accrued interest receivable 2,387 2,387 - - 2,387 Financial liabilities: Deposits $ 624,447 $ 433,226 $ - $ 191,747 $ 624,973 Short-term borrowings 35,825 35,825 - - 35,825 Other borrowings 9,939 - - 10,063 10,063 Accrued interest payable 395 395 - - 395 Financial instruments are defined as cash, evidence of ownership interest in an entity, or a contract which creates an obligation or right to receive or deliver cash or another financial instrument from/to a second Fair value is defined as the amount at which a financial instrument could be exchanged in a current transaction between willing parties other than in a forced liquidation sale. If a quoted market price is available for a financial instrument, the estimated fair value would be calculated based upon the market price per trading unit of the instrument. If no readily available market exists, the fair value estimates for financial instruments should be based upon management’s judgment regarding current economic conditions, interest rate risk, expected cash flows, future estimated losses, and other factors as determined through various option pricing formulas or simulation modeling. Since many of these assumptions result from judgments made by management based upon estimates which are inherently uncertain, the resulting estimated fair values may may As certain assets such as deferred tax assets and premises and equipment are not considered financial instruments, the estimated fair value of financial instruments would not represent the full value of the Company. The Company employed simulation modeling in determining the estimated fair value of financial instruments for which quoted market prices were not available based upon the following assumptions. Cash and Cash Equivalents, Federal Home Loan Bank Stock, Accrued Interest Receivable, Accrued Interest Payable, and Short-Term Borrowings The fair value is equal to the current carrying value. Bank-Owned Life Insurance The fair value is equal to the cash surrender value of the life insurance policies. Investment Securities Available for Sale The fair value of investment securities is equal to the available quoted market price. If no quoted market price is available, fair value is estimated using the quoted market price for similar securities. Loans The fair value is estimated by discounting future cash flows using current market inputs at which loans with similar terms and qualities would be made to borrowers of similar credit quality. Where quoted market prices were available, primarily for certain residential mortgage loans, such market rates were utilized as estimates for fair value. Mortgage L oans held for sale Mortgage loans held for sale are carried at their fair value. Mortgage loans held for sale are estimated using security prices for similar product types and, therefore, are classified in Level II. Deposits and Other Borrowed Funds The fair values of certificates of deposit and other borrowed funds are based on the discounted value of contractual cash flows. The discount rates are estimated using rates currently offered for similar instruments with similar remaining maturities. Demand, savings, and money market deposits are valued at the amount payable on demand as of year-end. Commitments to Extend Credit These financial instruments are generally not subject to sale, and estimated fair values are not readily available. The carrying value, represented by the net deferred fee arising from the unrecognized commitment or letter of credit, and the fair value, determined by discounting the remaining contractual fee over the term of the commitment using fees currently charged to enter into similar agreements with similar credit risk, are not considered material for disclosure. The contractual amounts of unfunded commitments and letters of credit are presented in Note 14.

Note 19 - Accumulated Other Com

Note 19 - Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	19. ACCUMULATED OTHER COMPREHENSIVE INCOME The following table presents the changes in accumulated other comprehensive income by component net of tax: Unrealized gains on available-for-sale (Dollars in thousands) securities (a) Balance as of December 31, 2015 $ 2,395 Other comprehensive loss before reclassification (994 ) Amount reclassified from accumulated other comprehensive income (200 ) Period change (1,194 ) Balance at December 31, 2016 $ 1,201 (a) All amounts are net of tax. Amounts in parentheses indicate debits. The following tables present significant amounts reclassified out of each component of accumulated other comprehensive income (loss): (Dollars in thousands) Amount Reclassified from Accumulated Other Comprehensive Income (a) Affected Line Item in the Statement Where Net Income is Details about other comprehensive income December 31, 2016 Presented Unrealized gains on available-for-sale securities $ 303 Investment securities gains, net (103 ) Income taxes $ 200 Net of tax (Dollars in thousands) Amount Reclassified from Accumulated Other Comprehensive Income (a) Affected Line Item in the Statement Where Net Income is Details about other comprehensive income December 31, 2015 Presented Unrealized gains on available-for-sale securities $ 323 Investment securities gains, net (110 ) Income taxes $ 213 Net of tax (a) Amounts in parentheses indicate debits to net income

Note 20 - Subsequent Event

Note 20 - Subsequent Event	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Subsequent Events [Text Block]	20. SUBSEQUENT EVENT On January 12, 2017, $37.96 1.1934 557,079 $43.1 three February. Middlefield Banc Corp Unaudited Pro Forma Combined Consolidated Condensed Balance Sheet As of December 31, 2016 (Dollars in Thousands, Except Per Share Amounts) December 31, 2016 ASSETS Cash and due from banks $ 52,718 Fed funds sold 1,100 Cash and cash equivalents 53,818 Investment securities available for sale, at fair value 113,796 Loans held for sale 992 Loans 807,450 Less allowance for loan and lease losses 6,598 Net loans 800,852 Premises and equipment, net 11,535 Goodwill 13,807 Core deposit intangibles 3,123 Bank owned life insurance 15,193 Other real estate owned 934 Accrued interest and other assets 10,310 TOTAL ASSETS $ 1,024,360 LIABILITIES Noninterest-bearing demand $ 171,711 Interest-bearing demand 83,759 Money market 170,155 Savings 182,364 Time 220,697 Total deposits 828,686 Short-term borrowings 68,359 Other borrowings 21,437 Accrued interest and other liabilities 7,434 TOTAL LIABILITIES $ 925,916 EQUITY Common stock $ 69,502 Surplus / additional paid in capital - Retained earnings 41,259 Accumulated other comprehensive income 1,201 Treasury stock (13,518 ) TOTAL STOCKHOLDERS' EQUITY $ 98,444 TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 1,024,360 Middlefield Banc Corp Unaudited Pro Forma Combined Consolidated Condensed Statement of Income For the Twelve Months Ended December 31, 2016 2015 (Dollars in Thousands, Except Per Share Amounts) Year Ended December 31, 2016 Year-Ended December 31, 2015 INTEREST INCOME Interest and fees on originated loans $ 35,308 $ 31,986 Interest bearing deposits in other institutions 210 124 Federal funds sold 20 13 Investment securities 4,019 4,627 Dividends on stock 138 164 Total interest income 39,695 36,914 INTEREST EXPENSE Deposits 4,315 4,265 Short term borrowings 322 194 Other borrowings 560 575 Trust preferred securities 182 117 Total interest expense 5,379 5,151 Net interest income 34,316 31,763 Provision for loan and lease losses 570 315 Net interest income after provision for loan and lease losses 33,746 31,448 NONINTEREST INCOME Service charges on deposit accounts 2,266 2,156 Investment securities gains, net 303 323 Earnings on bank-owned life insurance 430 678 Gains on sale of loans 1,257 805 Other income 1,229 1,224 Total noninterest income 5,485 5,186 NONINTEREST EXPENSE Salaries and employee benefits 14,523 13,454 Occupancy expense 1,762 1,746 Equipment expense 1,206 1,156 Data processing costs 1,931 1,489 Core deposit intangible amortization 382 382 Other expense 8,919 8,453 Total noninterest expense 28,723 26,680 Income before taxes 10,508 9,954 Income taxes 2,473 1,954 NET INCOME $ 8,035 $ 8,000 Less: Income attributable to common stock subject to possible - - Pro forma net income attributable to common stock not $ 8,035 $ 8,000 Pro forma net income per common share - basic $ 3.02 $ 3.11 Pro forma net income per common share - diluted 3.00 3.10 Weighted average number of shares outstanding - basic 2,664,936 2,572,045 Weighted average number of shares outstanding - diluted 2,676,293 2,581,199

Note 21 - Parent Company

Note 21 - Parent Company	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	21. PARENT COMPANY Following are condensed financial statements for the Company. CONDENSED BALANCE SHEET (Dollar amounts in thousands) December 31, 2016 2015 ASSETS Cash and due from banks $ 2,543 $ 1,329 Investment securities available for sale 1,139 814 Investment in nonbank subsidiary 2,360 2,418 Investment in subsidiary bank 76,365 73,061 Other assets 2,837 2,475 TOTAL ASSETS $ 85,244 $ 80,097 LIABILITIES Trust preferred securities $ 8,248 $ 8,248 Short-term borrowings - 9,499 Other liabilities 36 43 TOTAL LIABILITIES 8,284 17,790 STOCKHOLDERS' EQUITY 76,960 62,307 TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 85,244 $ 80,097 CONDENSED STATEMENT OF COMPREHENSIVE INCOME Year Ended December 31, (Dollar amounts in thousands) 2016 2015 2014 INCOME Dividends from subsidiary bank $ 3,400 $ 4,023 $ 3,142 Other 24 19 8 Total income 3,424 4,042 3,150 EXPENSES Interest expense 366 290 304 Other 1,856 860 816 Total expenses 2,222 1,150 1,120 Income before income tax benefit 1,202 2,892 2,030 Income tax benefit (561 ) (386 ) (378 ) Income before equity in undistributed net income of subsidiaries 1,763 3,278 2,408 Equity in undistributed net income of subsidiaries 4,653 3,587 4,772 NET INCOME $ 6,416 $ 6,865 $ 7,180 Comprehensive Income $ 5,222 $ 6,712 $ 11,965 CONDENSED STATEMENT OF CASH FLOWS Year Ended December 31, (Dollar amounts in thousands) 2016 2015 2014 OPERATING ACTIVITIES Net income $ 6,416 $ 6,865 $ 7,180 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of Middlefield Banking Company (4,710 ) (3,703 ) (4,798 ) Equity in undistributed net loss of EMORECO 57 116 26 Stock-based compensation expense 29 18 10 Other (484 ) (503 ) (409 ) Net cash provided by operating activities 1,308 2,793 2,009 FINANCING ACTIVITIES Net (decrease) increase in short-term borrowings (9,499 ) 6,363 (759 ) Purchase of treasury stock - (6,784 ) - Common stock issued 11,210 - - Stock options exercised (6 ) (7 ) (50 ) Proceeds from dividend reinvestment plan 519 651 590 Cash dividends (2,318 ) (2,153 ) (2,121 ) Net cash used for financing activities (94 ) (1,930 ) (2,340 ) Increase (decrease) in cash 1,214 863 (331 ) CASH AT BEGINNING OF YEAR 1,329 466 797 CASH AT END OF YEAR $ 2,543 $ 1,329 $ 466

Note 22 - Selected Quarterly Fi

Note 22 - Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Quarterly Financial Information [Text Block]	22. SELECTED QUARTERLY FINANCIAL DATA (Unaudited) (Dollar amounts in thousands) Three Months Ended March 31, June 30, September 30, December 31, 2016 2016 2016 2016 Total interest income $ 7,348 $ 7,405 $ 7,420 $ 7,821 Total interest expense 1,025 1,066 1,026 1,073 Net interest income 6,323 6,339 6,394 6,748 Provision for loan losses 105 105 105 255 Net interest income after provision for loan losses 6,218 6,234 6,289 6,493 Total noninterest income 909 1,173 977 485 Total noninterest expense 5,338 4,915 5,662 4,957 Income before income taxes 1,789 2,492 1,604 2,021 Income taxes 302 566 261 776 Net income $ 1,487 $ 1,926 $ 1,343 $ 1,245 Per share data: Net income Basic $ 0.79 $ 0.94 $ 0.60 $ 0.55 Diluted 0.79 0.94 0.60 0.55 Average shares outstanding: Basic 1,878,177 2,051,137 2,247,587 2,251,412 Diluted 1,886,943 2,059,411 2,256,230 2,259,589 (Dollar amounts in thousands) Three Months Ended March 31, June 30, September 30, December 31, 2015 2015 2015 2015 Total interest income $ 7,035 $ 7,066 $ 7,151 $ 7,343 Total interest expense 883 990 959 988 Net interest income 6,152 6,076 6,192 6,355 Provision for loan losses 105 - 105 105 Net interest income after provision for loan losses 6,047 6,076 6,087 6,250 Total noninterest income 796 962 1,108 1,178 Total noninterest expense 4,811 5,217 4,669 5,380 Income before income taxes 2,032 1,821 2,526 2,048 Income taxes 404 316 544 298 Net income $ 1,628 $ 1,505 $ 1,982 $ 1,750 Per share data: Net income Basic $ 0.79 $ 0.73 $ 0.96 $ 0.93 Diluted 0.78 0.73 0.96 0.92 Average shares outstanding: Basic 2,053,660 2,058,986 2,064,054 1,884,484 Diluted 2,062,867 2,068,313 2,072,639 1,893,345

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Nature of Operations and Basis of Presentation Middlefield Banc Corp. (the “Company”) is an Ohio corporation organized to become the holding company of The Middlefield Banking Company (“MBC”). MBC is a state-chartered bank located in Ohio. On April 19, 2007, January 20, 2014. October 23, 2009, ten The consolidated financial statements of the Company include its wholly owned subsidiaries, MBC and EMORECO, Inc. Significant intercompany items have been eliminated in preparing the consolidated financial statements. The financial statements have been prepared in conformity with U.S. Generally Accepted Accounting Principles. In preparing the financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the balance sheet date and revenues and expenses for the period. Actual results could differ from those estimates.
Marketable Securities, Policy [Policy Text Block]	Investment Securities Investment securities are classified at the time of purchase, based on management’s intention and ability, as securities held to maturity or securities available for sale. Debt securities acquired with the intent and ability to hold to maturity are stated at cost adjusted for amortization of premium and accretion of discount, which are computed using a level yield method and recognized as adjustments of interest income. Certain other debt securities have been classified as available for sale to serve principally as a source of liquidity. Unrealized holding gains and losses for available-for-sale securities are reported as a separate component of stockholders’ equity, net of tax, until realized. Realized security gains and losses are computed using the specific identification method. Interest and dividends on investment securities are recognized as income when earned. Securities are evaluated on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation to determine whether a decline in their value is other than temporary. For debt securities, management considers whether the present value of cash flows expected to be collected are less than the security’s amortized cost basis (the difference defined as the credit loss), the magnitude and duration of the decline, the reasons underlying the decline and the Bank’s intent to sell the security or whether it is more likely than not that the Bank would be required to sell the security before its anticipated recovery in market value, to determine whether the loss in value is other than temporary. Once a decline in value is determined to be other than temporary, if the Bank does not intend to sell the security, and it is more likely than not that it will not be required to sell the security, before recovery of the security’s amortized cost basis, the charge to earnings is limited to the amount of credit loss. Any remaining difference between fair value and amortized cost (the difference defined as the non-credit portion) is recognized in other comprehensive income, net of applicable taxes. Otherwise, the entire difference between fair value and amortized cost is charged to earnings. For equity securities where the fair value has been significantly below cost for one
Cost Method Investments, Policy [Policy Text Block]	Restricted Stock Common stock of the Federal Home Loan Bank (“FHLB”) represents ownership in an institution that is wholly owned by other financial institutions. This equity security is accounted for at cost and classified with other assets. The FHLB of Cincinnati has reported profits for 2016 2015, December 31, 2016 2015.
Loans and Leases Receivable, Mortgage Banking Activities, Policy [Policy Text Block]	Mortgage Banking Activities secondary Mortgage servicing rights were periodically evaluated for impairment, beginning in 2016. Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of outstanding principal and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Late fees and ancillary fees related to loan servicing are not material. The Company is exposed to interest rate risk on loans held for sale and rate-lock loan commitments (“IRLCs”). As market interest rates increase or decrease, the fair value of loans held for sale and rate-lock commitments will decrease or increase. The Company enters into derivative transactions principally to protect against the risk of adverse interest movements affecting the value of the Company’s committed loan sales pipeline. In order to mitigate the risk that a change in interest rates will result in a decrease in value of the Company’s IRLCs in the committed mortgage pipeline or its loans held for sale, the Company enters into mandatory forward loan sales contracts with secondary secondary
Finance, Loans and Leases Receivable, Policy [Policy Text Block]	Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff generally are reported at their outstanding unpaid principal balances net of the allowance for loan and lease losses. Interest income is recognized as income when earned on the accrual method. The accrual of interest is discontinued on a loan when management believes, after considering economic and business conditions, the borrower’s financial condition is such that collection of interest is doubtful. Interest received on nonaccrual loans is recorded as income or applied against principal according to management’s judgment as to the collectability of such principal. Loan origination fees and certain direct loan origination costs are being deferred and the net amount amortized as an adjustment of the related loan’s yield. Management is amortizing these amounts over the contractual life of the related loans.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Allowance for Loan and Lease Losses The allowance for loan and lease losses represents the amount which management estimates is adequate to provide for probable loan losses inherent in the loan portfolio. The allowance method is used in providing for loan losses. Accordingly, all loan losses are charged to the allowance, and all recoveries are credited to it. The allowance for loan and lease losses is established through a provision for loan losses which is charged to operations. The provision is based on management’s periodic evaluation of the adequacy of the allowance for loan and lease losses, which encompasses the overall risk characteristics of the various portfolio segments, past experience with losses, the impact of economic conditions on borrowers, and other relevant factors. The estimates used in determining the adequacy of the allowance for loan and lease losses, including the amounts and timing of future cash flows expected on impaired loans, are particularly susceptible to significant change in the near term. A loan is considered impaired when it is probable the borrower will not repay the loan according to the original contractual terms of the loan agreement. Management has determined that first one four 90 first Mortgage loans secured by one four
Property, Plant and Equipment, Policy [Policy Text Block]	Premises and Equipment Land is carried at cost. Premises and equipment are stated at cost net of accumulated depreciation. Depreciation is computed on the straight-line method over the estimated useful lives of the assets, which range from 3 20 3 40
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill The Company accounts for goodwill using a three No
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]	Intangible Assets Intangible assets include core deposit intangibles, which are a measure of the value of consumer demand and savings deposits acquired in business combinations accounted for as purchases. The core deposit intangibles are being amortized to expense over a 10
Life Insurance Corporate or Bank Owned [Policy Text Block]	Bank-Owned Life Insurance (“BOLI”) The Company owns insurance on the lives of a certain group of key employees. The policies were purchased to help offset the increase in the costs of various fringe benefit plans including healthcare. The cash surrender value of these policies is included as an asset on the Consolidated Balance Sheet and any increases in the cash surrender value are recorded as noninterest income on the Consolidated Statement of Income. In the event of the death of an insured individual under these policies, the Company would receive a death benefit, which would be recorded as noninterest income.
Real Estate, Policy [Policy Text Block]	Other Real Estate Owned Real estate properties acquired through foreclosure are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. After foreclosure, management periodically performs valuations and the real estate is carried at the lower of cost or fair value less estimated cost to sell. Revenue and expenses from operations of the properties, gains or losses on sales and additions to the valuation allowance are included in operating results.
Income Tax, Policy [Policy Text Block]	Income Taxes The Company and its subsidiaries file a consolidated federal income tax return. Deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Share The Company provides dual presentation of basic and diluted earnings per share. Basic earnings per share are calculated utilizing net income as reported in the numerator and average shares outstanding in the denominator. The computation of diluted earnings per share differs in that the dilutive effects of any stock options, warrants, and convertible securities are adjusted in the denominator.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-Based Compensation The Company accounts for stock compensation based on the grant date fair value of all share-based payment awards that are expected to vest, including employee share options to be recognized as employee compensation expense over the requisite service period. For each of the years ended December 31, 2016, 2015, 2014, no December 31, 2016, no At year ended December 31, 2016, 900 December 31, 2015, 585 no 2014. For the years ended December 31, 2016 2015, 500 2,175 $6,000 $7,000,
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Flow Information The Company has defined cash and cash equivalents as those amounts included in the Consolidated Balance Sheet captions as “Cash and due from banks” and “Federal funds sold” with original maturities of less than 90
Advertising Costs, Policy [Policy Text Block]	Advertising Costs Advertising costs are expensed as incurred.
Reclassification, Policy [Policy Text Block]	Reclassification of Comparative Amounts Certain comparative amounts for prior years have been reclassified to conform to current-year presentations. Such reclassifications did not affect net income or retained earnings.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements: In May 2014, 2014 09, Revenue from Contracts with Customers December 15, 2016, In August 2015, 2015 14, Revenue from Contract with Customers Topic 606 2014 09 one 2014 09 December 15, 2017, 2014 09 December 15, 2018, December 15, 2019. In January 2016, 2016 01, Financial Instruments – Overall (Subtopic 825 10): December 15, 2017, 960 965 December 15, 2018, December 15, 2019. may December 15, 2017, those fiscal years. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In February 2016, 2016 02 , Leases (Topic 842) one 12 may December 15, 2018, December 15, 2019, December 15, 2020. In March 2016, 2016 05, Derivatives and Hedging (Topic 815) 815 . 815 December 15, 2016, December 15, 2017, December 15, 2018. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 06, Derivatives and Hedging (Topic 815) four December 15, 2016, December 15, 2017, December 15, 2018. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 07, Investments – Equity Method and Joint Ventures (Topic 323) December 15, 2016. p interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 08, Revenue from Contracts with Customers (Topic 606). 606, 606; 2014 09, Revenue from Contracts with Customers (Topic 606), 2014 09. 2015 14, Revenue from Contracts with Customers (Topic 606): 2014 09 one ear. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In March 2016, 2016 09, Compensation – Stock Compensation (Topic 718) 718 123 2004), Share-Based Payment December 15, 2016, December 15, 2017, December 15, 2018. he Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations. In April 2016, 2016 10, Revenue from Contracts with Customers (Topic 606). 606, 606. (1) (2) 606, 2014 09, Revenue from Contracts with Customers (Topic 606) r the amendments in this Update are the same as the effective date and transition requirements in Topic 606 2014 09). 2015 14, Revenue from Contracts with Customers (Topic 606) Deferral of the Effective Date 2014 09 one In May 2016, 2016 11, Revenue Recognition (Topic 605) 815 two March 3, 2016, In May 2016, 2016 12, Revenue from Contracts with Customers (Topic 606) 606, 606. 2014 09, Revenue from Contracts with Customers (Topic 606) 606 2014 09). 2015 14, Revenue from Contracts with Customers (Topic 606): 2014 09 one In June 2016, 2016 13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments 2016 13”), 2016 13 December 15, 2019, December 15, 2018. first In August 2016, 2016 15, Statement of Cash Flows (Topic 230): 2016 15”), eight may December 15, 2017, December 15, 2018, December 15, 2019. In October 2016, 2016 16, Income Taxes (Topic 740) 2016 16”), December 15, 2017, December 15, 2018, December 15, 2019. first In October 2016, 2016 17, Consolidation (Topic 810) 2016 17”), In October 2016, 2016 18, Statement of Cash Flows (Topic 230) 2016 18”), December 15, 2017, December 15, 2018, December 15, 2019. In December 2016, 2016 19, Technical Corrections and Improvements In December 2016, 2016 20 , Technical Corrections and Improvements to Topic 606, 2016 20”. 460, Guarantees 606. 2016 20 January 1, 2018. December 31, 2019, 2020. In January 2017, 2017 01, Business Combinations (Topic 805), 2017 01”, December 15, 2017, December 15, 2018, December 15, 2019. Accounting Standards Update 2017 03, 250) 323), September 22, 2016 November 17, 2016 In January 2017, 2017 03, 250) 323), September 22, 2016 November 17, 2016 11.M. 2014 09, 606); 2016 02, 842); 2016 13, 326):

Note 2 - Earnings Per Share (Ta

Note 2 - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Weighted Average Number of Shares [Table Text Block]	2016 2015 2014 Weighted-average common shares outstanding 2,494,022 2,251,365 2,231,165 Average treasury stock shares (386,165 ) (236,399 ) (189,530 ) Weighted-average common shares and common stock equivalents used to calculate basic earnings per share 2,107,857 2,014,966 2,041,635 Additional common stock equivalents used to calculate diluted earnings per share 11,357 9,154 7,871 Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share 2,119,214 2,024,120 2,049,506

Note 3 - Investment Securitie33

Note 3 - Investment Securities Available for Sale (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	December 31, 2016 Gross Gross Amortized Unrealized Unrealized Fair (Dollar amounts in thousands) Cost Gains Losses Value U.S. government agency securities $ 10,158 $ 174 $ (96 ) $ 10,236 Obligations of states and political subdivisions: Taxable 1,615 129 (4 ) 1,740 Tax-exempt 78,327 1,678 (522 ) 79,483 Mortgage-backed securities in government-sponsored entities 20,128 202 (261 ) 20,069 Private-label mortgage-backed securities 1,579 130 - 1,709 Total debt securities 111,807 2,313 (883 ) 113,237 Equity securities in financial institutions 750 389 - 1,139 Total $ 112,557 $ 2,702 $ (883 ) $ 114,376 December 31, 2015 Gross Gross Amortized Unrealized Unrealized Fair (Dollar amounts in thousands) Cost Gains Losses Value U.S. government agency securities $ 21,655 $ 245 $ (271 ) $ 21,629 Obligations of states and political subdivisions: Taxable 1,989 134 - 2,123 Tax-exempt 91,940 3,402 (175 ) 95,167 Mortgage-backed securities in government-sponsored entities 24,480 316 (272 ) 24,524 Private-label mortgage-backed securities 2,079 184 - 2,263 Total debt securities 142,143 4,281 (718 ) 145,706 Equity securities in financial institutions 750 64 - 814 Total $ 142,893 $ 4,345 $ (718 ) $ 146,520
Investments Classified by Contractual Maturity Date [Table Text Block]	Amortized Fair (Dollar amounts in thousands) Cost Value Due in one year or less $ 3,693 $ 3,759 Due after one year through five years 9,487 9,796 Due after five years through ten years 11,870 12,248 Due after ten years 86,757 87,434 Total $ 111,807 $ 113,237
Realized Gain (Loss) on Investments [Table Text Block]	2016 2015 2014 Proceeds from sales $ 9,063 $ 15,686 $ 8,383 Gross realized gains 309 440 306 Gross realized losses (6 ) (117 ) (58 )
Schedule of Unrealized Loss on Investments [Table Text Block]	December 31, 2016 Less than Twelve Months Twelve Months or Greater Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized (Dollar amounts in thousands) Value Losses Value Losses Value Losses U.S. government agency securities $ 3,803 $ (47 ) $ 1,316 $ (49 ) $ 5,119 $ (96 ) Obligations of states and political subdivisions Tax-exempt 23,554 (522 ) - - 23,554 (522 ) Taxable 502 (4 ) - - 502 (4 ) Mortgage-backed securities in government-sponsored entities 9,066 (126 ) 4,438 (135 ) 13,504 (261 ) Total $ 36,925 $ (699 ) $ 5,754 $ (184 ) $ 42,679 $ (883 ) December 31, 2015 Less than Twelve Months Twelve Months or Greater Total Gross Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized (Dollar amounts in thousands) Value Losses Value Losses Value Losses U.S. government agency securities $ 3,818 $ (57 ) $ 10,872 $ (214 ) $ 14,690 $ (271 ) Obligations of states and political subdivisions Tax-exempt 1,268 (9 ) 9,394 (166 ) 10,662 (175 ) Mortgage-backed securities in government-sponsored entities 8,725 (86 ) 6,685 (186 ) 15,410 (272 ) Total $ 13,811 $ (152 ) $ 26,951 $ (566 ) $ 40,762 $ (718 )

Note 4 - Loans and Related Al34

Note 4 - Loans and Related Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	2016 2015 Commercial and industrial $ 60,630 $ 42,536 Real estate - construction 23,709 22,137 Real estate - mortgage: Residential 270,830 232,478 Commercial 249,490 231,701 Consumer installment 4,481 4,858 609,140 533,710 Less allowance for loan and lease losses (6,598 ) (6,385 ) Net loans $ 602,542 $ 527,325
Schedule Of Financing Receivable By Segment [Table Text Block]	Real Estate- Mortgage December 31, 2016 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Loans: Individually evaluated for impairment $ 1,190 $ 913 $ 3,135 $ 7,187 $ 5 $ 12,430 Collectively evaluated for impairment 59,440 22,796 267,695 242,303 4,476 596,710 Total loans $ 60,630 $ 23,709 $ 270,830 $ 249,490 $ 4,481 $ 609,140 Real estate- Mortgage December 31, 2015 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Loans: Individually evaluated for impairment $ 1,808 $ 1,787 $ 3,881 $ 6,199 $ 6 $ 13,681 Collectively evaluated for impairment 40,728 20,350 228,597 225,502 4,852 520,029 Total loans $ 42,536 $ 22,137 $ 232,478 $ 231,701 $ 4,858 $ 533,710
Schedule of Credit Losses for Financing Receivables, Current [Table Text Block]	Real Estate- Mortgage December 31, 2016 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Allowance for loan and lease losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 90 $ - $ 251 $ 186 $ - $ 527 Collectively evaluated for impairment 358 172 2,567 2,949 25 6,071 Total ending allowance balance $ 448 $ 172 $ 2,818 $ 3,135 $ 25 $ 6,598 Real Estate- Mortgage December 31, 2015 Commercial and industrial Real estate- construction Residential Commercial Consumer installment Total Allowance for loan and lease losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 388 $ 130 $ 276 $ 39 $ - $ 833 Collectively evaluated for impairment 479 146 2,863 2,039 25 5,552 Total ending allowance balance $ 867 $ 276 $ 3,139 $ 2,078 $ 25 $ 6,385 Commercial and industrial Real estate- construction Real estate- residential mortgage Real estate- commercial mortgage Consumer installment Total ALLL balance at December 31, 2015 $ 867 $ 276 $ 3,139 $ 2,078 $ 25 $ 6,385 Charge-offs (237 ) - (414 ) (70 ) (22 ) (743 ) Recoveries 90 - 141 140 15 386 Provision (272 ) (104 ) (48 ) 987 7 570 ALLL balance at December 31, 2016 $ 448 $ 172 $ 2,818 $ 3,135 $ 25 $ 6,598 Commercial and industrial Real estate- construction Real estate- residential mortgage Real estate- commercial mortgage Consumer installment Total ALLL balance at December 31, 2014 $ 642 $ 868 $ 3,703 $ 1,576 $ 57 $ 6,846 Charge-offs (280 ) (385 ) (425 ) (92 ) (15 ) (1,197 ) Recoveries 207 - 186 5 23 421 Provision 298 (207 ) (325 ) 589 (40 ) 315 ALLL balance at December 31, 2015 $ 867 $ 276 $ 3,139 $ 2,078 $ 25 $ 6,385
Impaired Financing Receivables [Table Text Block]	December 31, 2016 Impaired Loans Recorded Unpaid Principal Related Investment Balance Allowance With no related allowance recorded: Commercial and industrial $ 319 $ 318 $ - Real estate - construction 913 909 - Real estate - mortgage: Residential 2,142 2,140 - Commercial 2,031 2,027 - Total $ 5,405 $ 5,394 $ - With an allowance recorded: Commercial and industrial $ 871 868 $ 90 Real estate - construction - - - Real estate - mortgage: Residential 993 991 251 Commercial 5,156 5,147 186 Consumer installment 5 5 - Total $ 7,025 $ 7,011 $ 527 Total: Commercial and industrial $ 1,190 $ 1,186 $ 90 Real estate - construction 913 909 - Real estate - mortgage: Residential 3,135 3,131 251 Commercial 7,187 7,174 186 Consumer installment 5 5 - Total $ 12,430 $ 12,405 $ 527 December 31, 2015 Impaired Loans Recorded Unpaid Principal Related Investment Balance Allowance With no related allowance recorded: Commercial and industrial $ 1,027 $ 1,025 $ - Real estate - construction 1,657 1,651 - Real estate - mortgage: Residential 2,445 2,443 - Commercial 2,337 2,335 - Consumer installment - - - Total $ 7,466 $ 7,454 $ - With an allowance recorded: Commercial and industrial $ 781 $ 781 $ 388 Real estate - construction 130 130 130 Real estate - mortgage: Residential 1,436 1,436 276 Commercial 3,862 3,846 39 Consumer installment 6 6 - Total $ 6,215 $ 6,199 $ 833 Total: Commercial and industrial $ 1,808 $ 1,806 $ 388 Real estate - construction 1,787 1,781 130 Real estate - mortgage: Residential 3,881 3,879 276 Commercial 6,199 6,181 39 Consumer installment 6 6 - Total $ 13,681 $ 13,653 $ 833
Schedule of Additional Information Related to Impaired Loans [Table Text Block]	As of December 31, 2016 As of December 31, 2015 As of December 31, 2014 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Commercial and industrial $ 1,211 $ 35 $ 1,468 $ 100 $ 1,989 $ 85 Real estate - construction 1,281 62 2,407 115 3,631 154 Real estate - mortgage: Residential 3,529 178 4,356 160 5,331 171 Commercial 7,384 553 5,203 350 5,998 229 Consumer installment 6 11 6 - 11 1 Total $ 13,410 $ 839 $ 13,440 $ 725 $ 16,960 $ 640
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	December 31, 2016 Number of Contracts Pre-Modification Post-Modification Term Outstanding Recorded Outstanding Recorded Troubled Debt Restructurings Modification Other Total Investment Investment Commercial and industrial 5 - 5 $ 610 $ 610 Residential real estate 4 - 4 166 166 Commercial real estate 1 - 1 311 311 December 31, 2015 Number of Contracts Pre-Modification Post-Modification Term Outstanding Recorded Outstanding Recorded Troubled Debt Restructurings Modification Other Total Investment Investment Commercial and industrial 6 - 6 $ 434 $ 434 Real estate construction 1 - 1 181 181 Residential real estate 5 1 6 515 535 Commercial real estate 1 - 1 270 270 December 31, 2014 Number of Contracts Pre-Modification Post-Modification Term Outstanding Recorded Outstanding Recorded Troubled Debt Restructurings Modification Other Total Investment Investment Residential real estate 3 - 3 $ 140 $ 140 Commercial real estate 1 - 1 48 48 Consumer 1 - 1 6 6
Financing Receivable Credit Quality Indicators [Table Text Block]	Special Total Pass Mention Substandard Doubtful Loans December 31, 2016 Commercial and industrial $ 58,539 $ 663 $ 1,428 $ - $ 60,630 Real estate - construction 23,541 144 24 - 23,709 Real estate - mortgage: Residential 264,481 428 5,921 - 270,830 Commercial 240,678 4,422 4,390 - 249,490 Consumer installment 4,467 - 14 - 4,481 Total $ 591,706 $ 5,657 $ 11,777 $ - $ 609,140 Special Total Pass Mention Substandard Doubtful Loans December 31, 2015 Commercial and industrial $ 40,560 $ 242 $ 1,734 $ - $ 42,536 Real estate - construction 22,007 - - 130 22,137 Real estate - mortgage: Residential 225,945 728 5,805 - 232,478 Commercial 219,331 4,327 8,043 - 231,701 Consumer installment 4,854 - 4 - 4,858 Total $ 512,697 $ 5,297 $ 15,586 $ 130 $ 533,710
Past Due Financing Receivables [Table Text Block]	30-59 Days 60-89 Days 90 Days+ Total Total Current Past Due Past Due Past Due Past Due Loans December 31, 2016 Commercial and industrial $ 60,407 $ 17 $ 2 $ 204 $ 223 $ 60,630 Real estate - construction 23,709 - - - - 23,709 Real estate - mortgage: Residential 268,041 1,909 207 673 2,789 270,830 Commercial 249,081 92 - 317 409 249,490 Consumer installment 4,465 - 10 6 16 4,481 Total $ 605,703 $ 2,018 $ 219 $ 1,200 $ 3,437 $ 609,140 30-59 Days 60-89 Days 90 Days+ Total Total Current Past Due Past Due Past Due Past Due Loans December 31, 2015 Commercial and industrial $ 41,544 $ 225 $ 26 $ 741 $ 992 $ 42,536 Real estate - construction 22,137 - - - - 22,137 Real estate - mortgage: Residential 229,725 1,482 92 1,179 2,753 232,478 Commercial 230,903 189 - 609 798 231,701 Consumer installment 4,837 16 3 2 21 4,858 Total $ 529,146 $ 1,912 $ 121 $ 2,531 $ 4,564 $ 533,710
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	90+ Days Past Nonaccrual Due and Accruing December 31, 2016 Commercial and industrial $ 454 $ - Real estate - construction - - Real estate - mortgage: Residential 4,034 - Commercial 1,409 - Consumer installment 6 - Total $ 5,903 $ 0 90+ Days Past Nonaccrual Due and Accruing December 31, 2015 Commercial and industrial $ 1,450 $ - Real estate - construction 130 - Real estate - mortgage: Residential 4,122 - Commercial 1,842 - Consumer installment 1 2 Total $ 7,545 $ 2
Subsequently Defaulted [Member]
Notes Tables
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	December 31, 2016 Number of Recorded Troubled Debt Restructurings subsequently defaulted Contracts Investment Commercial and industrial 2 $ 7 Real estate construction 1 - Residential real estate 4 278 Commercial real estate 1 119 December 31, 2015 Number of Recorded Troubled Debt Restructurings subsequently defaulted Contracts Investment Commercial and industrial 2 $ 14 Real estate construction 1 130 December 31, 2014 Number of Recorded Troubled Debt Restructurings subsequently defaulted Contracts Investment Residential real estate 1 $ 15

Note 6 - Premises and Equipme35

Note 6 - Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Property, Plant and Equipment [Table Text Block]	(Dollar amounts in thousands) 2016 2015 Land and land improvements $ 2,891 $ 1,943 Building and leasehold improvements 12,081 11,414 Furniture, fixtures, and equipment 5,404 4,853 20,376 18,210 Less accumulated depreciation and amortization 9,173 8,438 Total $ 11,203 $ 9,772

Note 8 - Other Assets (Tables)

Note 8 - Other Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Other Assets [Table Text Block]	(Dollar amounts in thousands) 2016 2015 Restricted stock $ 2,204 $ 1,887 Accrued interest on investment securities 812 1,010 Accrued interest on loans 1,614 1,377 Deferred tax asset, net 1,607 959 Other 1,265 2,244 Total $ 7,502 $ 7,477

Note 10 - Short-term Borrowin37

Note 10 - Short-term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Short-term Debt [Table Text Block]	(Dollar amounts in thousands) 2016 2015 Balance at year-end $ 68,359 $ 35,825 Average balance outstanding 37,130 11,768 Maximum month-end balance 68,359 35,825 Weighted-average rate at year-end 0.61 % 1.37 % Weighted-average rate during the year 0.89 % 1.65 %
Schedule of Repurchase Agreements [Table Text Block]	Repurchase Agreements (Sweep) Accounted for as Secured Borrowings (in thousands) Overnight and Continuous December 31, 2016 December 31, 2015 Repurchase agreements: Mortgage-backed securities in government sponsored entities $ 2,667 $ 1,877 Tax-exempt obligations of states and political subdivisions 968 - U.S. Government agency securities - 1,052 Gross amount of recognized liabilities $ 3,635 $ 2,929

Note 11 - Other Borrowings (Tab

Note 11 - Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Debt [Table Text Block]	Weighted- Stated interest (Dollar amounts in thousands) Maturity range average rate range Description from to interest rate from to 2016 2015 Fixed-rate amortizing 07/01/17 10/01/28 4.02 % 2.99 % 4.47 % $ 1,189 $ 1,691 Junior subordinated debt 12/21/37 12/21/37 2.20 % 2.20 2.20 8,248 8,248 Total $ 9,437 $ 9,939
Schedule of Maturities of Long-term Debt [Table Text Block]	(Dollar amounts in thousands) Weighted- Year Ending December 31, Amount Average Rate 2017 373 4.00 % 2018 252 4.02 % 2019 155 4.04 % 2020 116 4.04 % 2021 87 4.05 % Beyond 2021 8,454 2.25 % Total $ 9,437 2.37 %

Note 12 - Other Liabilities (Ta

Note 12 - Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Other Liabilities [Table Text Block]	2016 2015 (Dollar amounts in thousands) Accrued interest payable $ 395 $ 395 Supplemental Executive Retirement Plan 1,125 1,091 Accrued salary expense 768 689 Other 843 449 Total $ 3,131 $ 2,624

Note 13 - Income Taxes (Tables)

Note 13 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	(Dollar amounts in thousands) 2016 2015 2014 Current payable $ 1,998 $ 1,004 $ 2,146 Deferred (93 ) 558 (154 ) Total provision $ 1,905 $ 1,562 $ 1,992
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	(Dollar amounts in thousands) 2016 2015 Deferred tax assets: Allowance for loan and lease losses $ 2,243 $ 2,171 Supplemental retirement plan 382 371 Investment security basis adjustment 66 66 Nonaccrual interest income 456 415 Deferred origination fees, net - 12 OREO adjustments 26 92 Accrued compensation 261 234 Other 82 23 Gross deferred tax assets 3,516 3,384 Deferred tax liabilities: Premises and equipment 445 514 Net unrealized gain on securities 618 1,233 FHLB stock dividends 225 225 Intangibles 449 401 Mortgage servicing rights 103 68 Deferred origination fees, net 63 - Other 6 44 Gross deferred tax liabilities 1,909 2,485 Net deferred tax assets $ 1,607 $ 899
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	(Dollar amounts in thousands) 2016 2015 2014 % of % of % of Pretax Pretax Pretax Amount Income Amount Income Amount Income Provision at statutory rate $ 2,829 34.0 % $ 2,866 34.0 % $ 3,119 34.0 % Tax-free income (1,177 ) (14.1 ) (1,347 ) (15.9 ) (1,187 ) (12.9 ) Nondeductible interest expense 32 0.4 34 0.4 37 0.4 Nondeductible merger-related expense 186 2.2 - 0.0 - 0.0 Other 35 0.4 9 0.0 23 0.2 Actual tax expense and effective rate $ 1,905 22.9 % $ 1,562 18.5 % $ 1,992 21.7 %

Note 14 - Employee Benefits (Ta

Note 14 - Employee Benefits (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]	Projected Payments 2017 $ 23,000 2018 18,000 2019 12,000 2020 10,000 2021 2,000 Total $ 65,000
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Weighted- Weighted- average average Exercise Exercise 2016 Price 2015 Price Outstanding, January 1 $ 31,949 $ 25.03 $ 46,451 $ 27.90 Expired (2,125 ) 40.24 (10,802 ) 36.93 Exercised (500 ) 23.00 (2,175 ) 21.31 Forfeited - - (1,525 ) 33.53 Outstanding, December 31 $ 29,324 $ 23.67 $ 31,949 $ 25.03 Exercisable, December 31 $ 29,324 $ 23.67 $ 31,949 $ 25.03
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Outstanding Exercisable Contractual Average Average Exercise Average Exercise Exercise Grant Date Price Shares Life Price Shares Price May 16, 2007 37.48 1,337 0.36 37.48 1,337 37.48 December 10, 2007 37.00 1,950 0.93 37.00 1,950 37.00 January 2, 2008 36.25 1,337 1.00 36.25 1,337 36.25 November 10, 2008 23.00 16,500 1.85 23.00 16,500 23.00 May 9, 2011 17.55 8,200 4.35 17.55 8,200 17.55 29,324 29,324

Note 15 - Commitments (Tables)

Note 15 - Commitments (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Other Commitments [Table Text Block]	(Dollar amounts in thousands) 2016 2015 Commitments to extend credit $ 161,646 $ 112,134 Standby letters of credit 1,416 4,404 Total $ 163,062 $ 116,538
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	2017 $ 324 2018 325 2019 320 2020 332 2021 321 Thereafter 1,749 $ 3,371

Note 17 - Regulatory Capital (T

Note 17 - Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]	As of December 31, 2016 Leverage Tier 1 Risk Based Common Equity Tier 1 Total Risk Based The Middlefield Banking Company 9.46 % 13.03 % 13.03 % 14.25 % Middlefield Banc Corp. 9.27 % 13.07 % 13.07 % 15.75 % Adequately capitalized ratio 4.00 % 6.00 % 4.50 % 8.00 % Adequately capitalized ratio plus capital conservation buffer 4.00 % 8.50 % 7.00 % 10.50 % Well-capitalized ratio (Bank only) 5.00 % 8.00 % 6.50 % 10.00 % As of December 31, 2015 Leverage Tier 1 Risk Based Common Equity Tier 1 Total Risk Based The Middlefield Banking Company 9.23 % 12.52 % 12.52 % 13.73 % Middlefield Banc Corp. 8.69 % 12.00 % 12.00 % 13.20 % Adequately capitalized ratio 4.00 % 6.00 % 4.50 % 8.00 % Adequately capitalized ratio plus capital conservation buffer 4.00 % 8.50 % 7.00 % 10.50 % Well-capitalized ratio (Bank only) 5.00 % 8.00 % 6.50 % 10.00 %

Note 18 - Fair Value Disclosu44

Note 18 - Fair Value Disclosure Measurements (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	December 31, 2016 (Dollar amounts in thousands) Level I Level II Level III Total Assets measured on a recurring basis: U.S. government agency securities $ - $ 10,236 $ - $ 10,236 Obligations of states and political subdivisions - 81,223 - 81,223 Mortgage-backed securities in government- sponsored entities - 20,069 - 20,069 Private-label mortgage-backed securities - 1,709 - 1,709 Total debt securities - 113,237 - 113,237 Equity securities in financial institutions - 1,139 - 1,139 Total $ - $ 114,376 $ - $ 114,376 December 31, 2015 Level I Level II Level III Total Assets measured on a recurring basis: U.S. government agency securities $ - $ 21,629 $ - $ 21,629 Obligations of states and political subdivisions - 97,290 - 97,290 Mortgage-backed securities in government- sponsored entities - 24,524 - 24,524 Private-label mortgage-backed securities - 2,263 - 2,263 Total debt securities - 145,706 - 145,706 Equity securities in financial institutions - 814 - 814 Total $ - $ 146,520 $ - $ 146,520
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]	December 31, 2016 (Dollar amounts in thousands) Level I Level II Level III Total Assets measured on a non-recurring basis: Impaired loans $ - $ - $ 6,498 $ 6,498 Other real estate owned - - 511 511 December 31, 2015 Level I Level II Level III Total Assets measured on a non-recurring basis: Impaired loans $ - $ - $ 12,848 $ 12,848 Other real estate owned - - 1,412 1,412
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]	Quantitative Information about Level III Fair Value Measurements (Dollar amounts in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) December 31, 2016 Impaired loans $ 4,928 Discounted cash flow Discount rate 3.1% to 7.0% (5.1%) 1,570 Appraisal of collateral (1) Appraisal adjustments (2) 0.0% to 59.7% (28.2%) Other real estate owned $ 511 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 10.0% Quantitative Information about Level III Fair Value Measurements (Dollar amounts in thousands) Fair Value Estimate Valuation Techniques Unobservable Input Range (Weighted Average) December 31, 2015 Impaired loans $ 6,867 Discounted cash flow Discount rate 3.1% to 7.9% (5.0%) $ 5,981 Appraisal of collateral (1) Appraisal adjustment (2) 0.0% to 87.1% (23.3%) Other real estate owned $ 1,412 Appraisal of collateral (1) Appraisal adjustments (2) 0% to 10.0% (7.3%)
Fair Value, by Balance Sheet Grouping [Table Text Block]	December 31, 2016 Carrying Total Value Level I Level II Level III Fair Value (in thousands) Financial assets: Cash and cash equivalents $ 32,495 $ 32,495 $ - $ - $ 32,495 Investment securities available for sale 114,376 - 114,376 - 114,376 Loans held for sale 634 - 634 - 634 Net loans 602,542 - - 604,447 604,447 Bank-owned life insurance 13,540 13,540 - - 13,540 Restricted stock 2,204 2,204 - - 2,204 Accrued interest receivable 2,426 2,426 - - 2,426 Financial liabilities: Deposits $ 629,934 $ 440,500 $ - $ 189,871 $ 630,371 Short-term borrowings 68,359 68,359 - - 68,359 Other borrowings 9,437 - 9,512 9,512 Accrued interest payable 395 395 - - 395 December 31, 2015 Carrying Total Value Level I Level II Level III Fair Value (in thousands) Financial assets: Cash and cash equivalents $ 23,750 $ 23,750 $ - $ - $ 23,750 Investment securities available for sale 146,520 - 146,520 - 146,520 Loans held for sale 1,107 - 1,107 - 1,107 Net loans 527,325 - - 534,021 534,021 Bank-owned life insurance 13,141 13,141 - - 13,141 Restricted stock 1,887 1,887 - - 1,887 Accrued interest receivable 2,387 2,387 - - 2,387 Financial liabilities: Deposits $ 624,447 $ 433,226 $ - $ 191,747 $ 624,973 Short-term borrowings 35,825 35,825 - - 35,825 Other borrowings 9,939 - - 10,063 10,063 Accrued interest payable 395 395 - - 395

Note 19 - Accumulated Other C45

Note 19 - Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Unrealized gains on available-for-sale (Dollars in thousands) securities (a) Balance as of December 31, 2015 $ 2,395 Other comprehensive loss before reclassification (994 ) Amount reclassified from accumulated other comprehensive income (200 ) Period change (1,194 ) Balance at December 31, 2016 $ 1,201
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	(Dollars in thousands) Amount Reclassified from Accumulated Other Comprehensive Income (a) Affected Line Item in the Statement Where Net Income is Details about other comprehensive income December 31, 2016 Presented Unrealized gains on available-for-sale securities $ 303 Investment securities gains, net (103 ) Income taxes $ 200 Net of tax (Dollars in thousands) Amount Reclassified from Accumulated Other Comprehensive Income (a) Affected Line Item in the Statement Where Net Income is Details about other comprehensive income December 31, 2015 Presented Unrealized gains on available-for-sale securities $ 323 Investment securities gains, net (110 ) Income taxes $ 213 Net of tax

Note 20 - Subsequent Event (Tab

Note 20 - Subsequent Event (Tables) - Merger of Liberty Bank, N.A. into The Middlefield Banking Company [member] - Pro Forma [Member]	12 Months Ended
	Dec. 31, 2016
Notes Tables
Condensed Balance Sheet [Table Text Block]	December 31, 2016 ASSETS Cash and due from banks $ 52,718 Fed funds sold 1,100 Cash and cash equivalents 53,818 Investment securities available for sale, at fair value 113,796 Loans held for sale 992 Loans 807,450 Less allowance for loan and lease losses 6,598 Net loans 800,852 Premises and equipment, net 11,535 Goodwill 13,807 Core deposit intangibles 3,123 Bank owned life insurance 15,193 Other real estate owned 934 Accrued interest and other assets 10,310 TOTAL ASSETS $ 1,024,360 LIABILITIES Noninterest-bearing demand $ 171,711 Interest-bearing demand 83,759 Money market 170,155 Savings 182,364 Time 220,697 Total deposits 828,686 Short-term borrowings 68,359 Other borrowings 21,437 Accrued interest and other liabilities 7,434 TOTAL LIABILITIES $ 925,916 EQUITY Common stock $ 69,502 Surplus / additional paid in capital - Retained earnings 41,259 Accumulated other comprehensive income 1,201 Treasury stock (13,518 ) TOTAL STOCKHOLDERS' EQUITY $ 98,444 TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 1,024,360
Condensed Income Statement [Table Text Block]	Year Ended December 31, 2016 Year-Ended December 31, 2015 INTEREST INCOME Interest and fees on originated loans $ 35,308 $ 31,986 Interest bearing deposits in other institutions 210 124 Federal funds sold 20 13 Investment securities 4,019 4,627 Dividends on stock 138 164 Total interest income 39,695 36,914 INTEREST EXPENSE Deposits 4,315 4,265 Short term borrowings 322 194 Other borrowings 560 575 Trust preferred securities 182 117 Total interest expense 5,379 5,151 Net interest income 34,316 31,763 Provision for loan and lease losses 570 315 Net interest income after provision for loan and lease losses 33,746 31,448 NONINTEREST INCOME Service charges on deposit accounts 2,266 2,156 Investment securities gains, net 303 323 Earnings on bank-owned life insurance 430 678 Gains on sale of loans 1,257 805 Other income 1,229 1,224 Total noninterest income 5,485 5,186 NONINTEREST EXPENSE Salaries and employee benefits 14,523 13,454 Occupancy expense 1,762 1,746 Equipment expense 1,206 1,156 Data processing costs 1,931 1,489 Core deposit intangible amortization 382 382 Other expense 8,919 8,453 Total noninterest expense 28,723 26,680 Income before taxes 10,508 9,954 Income taxes 2,473 1,954 NET INCOME $ 8,035 $ 8,000 Less: Income attributable to common stock subject to possible - - Pro forma net income attributable to common stock not $ 8,035 $ 8,000 Pro forma net income per common share - basic $ 3.02 $ 3.11 Pro forma net income per common share - diluted 3.00 3.10 Weighted average number of shares outstanding - basic 2,664,936 2,572,045 Weighted average number of shares outstanding - diluted 2,676,293 2,581,199

Note 21 - Parent Company (Table

Note 21 - Parent Company (Tables) - Parent Company [Member]	12 Months Ended
	Dec. 31, 2016
Notes Tables
Condensed Balance Sheet [Table Text Block]	(Dollar amounts in thousands) December 31, 2016 2015 ASSETS Cash and due from banks $ 2,543 $ 1,329 Investment securities available for sale 1,139 814 Investment in nonbank subsidiary 2,360 2,418 Investment in subsidiary bank 76,365 73,061 Other assets 2,837 2,475 TOTAL ASSETS $ 85,244 $ 80,097 LIABILITIES Trust preferred securities $ 8,248 $ 8,248 Short-term borrowings - 9,499 Other liabilities 36 43 TOTAL LIABILITIES 8,284 17,790 STOCKHOLDERS' EQUITY 76,960 62,307 TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 85,244 $ 80,097
Condensed Income Statement [Table Text Block]	Year Ended December 31, (Dollar amounts in thousands) 2016 2015 2014 INCOME Dividends from subsidiary bank $ 3,400 $ 4,023 $ 3,142 Other 24 19 8 Total income 3,424 4,042 3,150 EXPENSES Interest expense 366 290 304 Other 1,856 860 816 Total expenses 2,222 1,150 1,120 Income before income tax benefit 1,202 2,892 2,030 Income tax benefit (561 ) (386 ) (378 ) Income before equity in undistributed net income of subsidiaries 1,763 3,278 2,408 Equity in undistributed net income of subsidiaries 4,653 3,587 4,772 NET INCOME $ 6,416 $ 6,865 $ 7,180 Comprehensive Income $ 5,222 $ 6,712 $ 11,965
Condensed Cash Flow Statement [Table Text Block]	Year Ended December 31, (Dollar amounts in thousands) 2016 2015 2014 OPERATING ACTIVITIES Net income $ 6,416 $ 6,865 $ 7,180 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of Middlefield Banking Company (4,710 ) (3,703 ) (4,798 ) Equity in undistributed net loss of EMORECO 57 116 26 Stock-based compensation expense 29 18 10 Other (484 ) (503 ) (409 ) Net cash provided by operating activities 1,308 2,793 2,009 FINANCING ACTIVITIES Net (decrease) increase in short-term borrowings (9,499 ) 6,363 (759 ) Purchase of treasury stock - (6,784 ) - Common stock issued 11,210 - - Stock options exercised (6 ) (7 ) (50 ) Proceeds from dividend reinvestment plan 519 651 590 Cash dividends (2,318 ) (2,153 ) (2,121 ) Net cash used for financing activities (94 ) (1,930 ) (2,340 ) Increase (decrease) in cash 1,214 863 (331 ) CASH AT BEGINNING OF YEAR 1,329 466 797 CASH AT END OF YEAR $ 2,543 $ 1,329 $ 466

Note 22 - Selected Quarterly 48

Note 22 - Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Quarterly Financial Information [Table Text Block]	(Dollar amounts in thousands) Three Months Ended March 31, June 30, September 30, December 31, 2016 2016 2016 2016 Total interest income $ 7,348 $ 7,405 $ 7,420 $ 7,821 Total interest expense 1,025 1,066 1,026 1,073 Net interest income 6,323 6,339 6,394 6,748 Provision for loan losses 105 105 105 255 Net interest income after provision for loan losses 6,218 6,234 6,289 6,493 Total noninterest income 909 1,173 977 485 Total noninterest expense 5,338 4,915 5,662 4,957 Income before income taxes 1,789 2,492 1,604 2,021 Income taxes 302 566 261 776 Net income $ 1,487 $ 1,926 $ 1,343 $ 1,245 Per share data: Net income Basic $ 0.79 $ 0.94 $ 0.60 $ 0.55 Diluted 0.79 0.94 0.60 0.55 Average shares outstanding: Basic 1,878,177 2,051,137 2,247,587 2,251,412 Diluted 1,886,943 2,059,411 2,256,230 2,259,589 (Dollar amounts in thousands) Three Months Ended March 31, June 30, September 30, December 31, 2015 2015 2015 2015 Total interest income $ 7,035 $ 7,066 $ 7,151 $ 7,343 Total interest expense 883 990 959 988 Net interest income 6,152 6,076 6,192 6,355 Provision for loan losses 105 - 105 105 Net interest income after provision for loan losses 6,047 6,076 6,087 6,250 Total noninterest income 796 962 1,108 1,178 Total noninterest expense 4,811 5,217 4,669 5,380 Income before income taxes 2,032 1,821 2,526 2,048 Income taxes 404 316 544 298 Net income $ 1,628 $ 1,505 $ 1,982 $ 1,750 Per share data: Net income Basic $ 0.79 $ 0.73 $ 0.96 $ 0.93 Diluted 0.78 0.73 0.96 0.92 Average shares outstanding: Basic 2,053,660 2,058,986 2,064,054 1,884,484 Diluted 2,062,867 2,068,313 2,072,639 1,893,345

Note 1 - Summary of Significa49

Note 1 - Summary of Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 31, 2016USD ($)shares	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)shares
Number of Branches	10
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | shares	500	2,175
Payments For Stock Options Exercised	$ 6,000	$ 7,000	$ 50,000
Goodwill, Impairment Loss	0	0	0
Allocated Share-based Compensation Expense	0	$ 0	$ 0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 0
Restricted Stock [Member]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | shares	900	585	0
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life	10 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	20 years
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	40 years

Note 2 - Earnings Per Share (De

Note 2 - Earnings Per Share (Details Textual) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	29,324	31,949	46,451
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit	$ 17.55	$ 17.55	$ 17.55
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit	$ 37.48	$ 40.24	$ 40.24
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	11,357	9,154	7,871
Employee Stock Option [Member]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	29,324	27,250	28,282

Note 2 - Earnings Per Share - S

Note 2 - Earnings Per Share - Shares Used in Calculation of Earnings Per Share (Details) - shares	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
Weighted-average common shares outstanding (in shares)									2,494,022	2,251,365	2,231,165
Average treasury stock shares (in shares)									(386,165)	(236,399)	(189,530)
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share (in shares)	2,251,412	2,247,587	2,051,137	1,878,177	1,884,484	2,064,054	2,058,986	2,053,660	2,107,857	2,014,966	2,041,635
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements									11,357	9,154	7,871
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share (in shares)	2,259,589	2,256,230	2,059,411	1,886,943	1,893,345	2,072,639	2,068,313	2,062,867	2,119,214	2,024,120	2,049,506

Note 3 - Investment Securitie52

Note 3 - Investment Securities Available for Sale (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale Securities Pledged as Collateral	$ 60,300	$ 68,800
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	67
Available-for-sale Securities, Percentage of Portfolio	97.50%
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 0

Note 3 - Investment Securitie53

Note 3 - Investment Securities Available for Sale - Amortized Cost and Fair Values of Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Amortized cost	$ 112,557	$ 142,893
Gross unrealized gains	2,702	4,345
Gross unrealized losses	(883)	(718)
Investment securities available for sale, at fair value	114,376	146,520
US Government Agencies Debt Securities [Member]
Amortized cost	10,158	21,655
Gross unrealized gains	174	245
Gross unrealized losses	(96)	(271)
Investment securities available for sale, at fair value	10,236	21,629
US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale, at fair value	81,223	97,290
US States and Political Subdivisions Debt Securities [Member] | Taxable [Member]
Amortized cost	1,615	1,989
Gross unrealized gains	129	134
Gross unrealized losses	(4)
Investment securities available for sale, at fair value	1,740	2,123
US States and Political Subdivisions Debt Securities [Member] | Tax Exempt [Member]
Amortized cost	78,327	91,940
Gross unrealized gains	1,678	3,402
Gross unrealized losses	(522)	(175)
Investment securities available for sale, at fair value	79,483	95,167
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Amortized cost	20,128	24,480
Gross unrealized gains	202	316
Gross unrealized losses	(261)	(272)
Investment securities available for sale, at fair value	20,069	24,524
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Amortized cost	1,579	2,079
Gross unrealized gains	130	184
Gross unrealized losses
Investment securities available for sale, at fair value	1,709	2,263
Debt Securities [Member]
Amortized cost	111,807	142,143
Gross unrealized gains	2,313	4,281
Gross unrealized losses	(883)	(718)
Investment securities available for sale, at fair value	113,237	145,706
Equity Securities In Financial Institutions [Member]
Amortized cost	750	750
Gross unrealized gains	389	64
Gross unrealized losses
Investment securities available for sale, at fair value	$ 1,139	$ 814

Note 3 - Investment Securitie54

Note 3 - Investment Securities Available for Sale - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) $ in Thousands	Dec. 31, 2016USD ($)
Due in one year or less	$ 3,693
Due in one year or less	3,759
Due after one year through five years	9,487
Due after one year through five years	9,796
Due after five years through ten years	11,870
Due after five years through ten years	12,248
Due after ten years	86,757
Due after ten years	87,434
Total	111,807
Total	$ 113,237

Note 3 - Investment Securitie55

Note 3 - Investment Securities Available for Sale - Sales of Available for Sale Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Proceeds from sales	$ 9,063	$ 15,686	$ 8,383
Gross realized gains	309	440	306
Gross realized losses	$ (6)	$ (117)	$ (58)

Note 3 - Investment Securitie56

Note 3 - Investment Securities Available for Sale - Gross Unrealized Losses and Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Less than Twelve Months, Fair Value	$ 36,925	$ 13,811
Less than Twelve Months, Gross Unrealized Losses	(699)	(152)
Twelve Months or Greater, Fair Value	5,754	26,951
Twelve Months or Greater, Gross Unrealized Losses	(184)	(566)
Total, Fair Value	42,679	40,762
Total, Gross Unrealized Losses	(883)	(718)
US Government Agencies Debt Securities [Member]
Less than Twelve Months, Fair Value	3,803	3,818
Less than Twelve Months, Gross Unrealized Losses	(47)	(57)
Twelve Months or Greater, Fair Value	1,316	10,872
Twelve Months or Greater, Gross Unrealized Losses	(49)	(214)
Total, Fair Value	5,119	14,690
Total, Gross Unrealized Losses	(96)	(271)
US States and Political Subdivisions Debt Securities [Member] | Tax Exempt [Member]
Less than Twelve Months, Fair Value	23,554	1,268
Less than Twelve Months, Gross Unrealized Losses	(522)	(9)
Twelve Months or Greater, Fair Value	0	9,394
Twelve Months or Greater, Gross Unrealized Losses		(166)
Total, Fair Value	23,554	10,662
Total, Gross Unrealized Losses	(522)	(175)
US States and Political Subdivisions Debt Securities [Member] | Taxable [Member]
Less than Twelve Months, Fair Value	502
Less than Twelve Months, Gross Unrealized Losses	(4)
Twelve Months or Greater, Fair Value
Twelve Months or Greater, Gross Unrealized Losses
Total, Fair Value	502
Total, Gross Unrealized Losses	(4)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Less than Twelve Months, Fair Value	9,066	8,725
Less than Twelve Months, Gross Unrealized Losses	(126)	(86)
Twelve Months or Greater, Fair Value	4,438	6,685
Twelve Months or Greater, Gross Unrealized Losses	(135)	(186)
Total, Fair Value	13,504	15,410
Total, Gross Unrealized Losses	$ (261)	$ (272)

Note 4 - Loans and Related Al57

Note 4 - Loans and Related Allowance for Loan Losses (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of Days Past Due	90 days
Financing Receivable, Modifications, Recorded Investment	$ 6,700,000	$ 3,100,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	309,000	$ 259,000	$ 207,000
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 237,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Increase in Portfolio Percent	7.70%
Threshold For Loans Evaluated For Impairment [Member]
Notes, Loans and Financing Receivable, Gross, Current	$ 150,000
Loans and Leases Receivable before Fees, Gross	1,000,000
Threshold For Loans Evaluated For Impairment [Member] | Outside Consultant [Member]
Loans and Leases Receivable before Fees, Gross	250,000
Threshold For Loans Evaluated For Impairment [Member] | Criticized Relationships [Member]
Financing Receivable, Gross	125,000
Residential Loan [Member] | Real Estate Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 414,000

Note 4 - Loans and Related Al58

Note 4 - Loans and Related Allowance for Loan Losses - Major Classifications of Net Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable Gross	$ 609,140	$ 533,710
Less allowance for loan and lease losses	(6,598)	(6,385)	$ (6,846)
Net loans	602,542	527,325
Commercial And Industrial [Member]
Financing Receivable Gross	60,630	42,536
Less allowance for loan and lease losses	(448)	(867)	(642)
Real Estate Construction Porfolio Segment [Member]
Financing Receivable Gross	23,709	22,137
Less allowance for loan and lease losses	(172)	(276)	(868)
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Financing Receivable Gross	270,830	232,478
Less allowance for loan and lease losses	(2,818)	(3,139)	(3,703)
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Financing Receivable Gross	249,490	231,701
Less allowance for loan and lease losses	(3,135)	(2,078)	(1,576)
Consumer Portfolio Segment [Member]
Financing Receivable Gross	4,481	4,858
Less allowance for loan and lease losses	$ (25)	$ (25)	$ (57)

Note 4 - Loans and Related Al59

Note 4 - Loans and Related Allowance for Loan Losses - Primary Segments of the Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Individually evaluated for impairment	$ 12,430	$ 13,681
Collectively evaluated for impairment	596,710	520,029
Total loans	609,140	533,710
Commercial And Industrial [Member]
Individually evaluated for impairment	1,190	1,808
Collectively evaluated for impairment	59,440	40,728
Total loans	60,630	42,536
Real Estate Construction Porfolio Segment [Member]
Individually evaluated for impairment	913	1,787
Collectively evaluated for impairment	22,796	20,350
Total loans	23,709	22,137
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Individually evaluated for impairment	3,135	3,881
Collectively evaluated for impairment	267,695	228,597
Total loans	270,830	232,478
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Individually evaluated for impairment	7,187	6,199
Collectively evaluated for impairment	242,303	225,502
Total loans	249,490	231,701
Consumer Portfolio Segment [Member]
Individually evaluated for impairment	5	6
Collectively evaluated for impairment	4,476	4,852
Total loans	$ 4,481	$ 4,858

Note 4 - Loans and Related Al60

Note 4 - Loans and Related Allowance of Loan Losses - Allowance for Loan Losses (Details) - 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, 2016	Dec. 31, 2015
Individually evaluated for impairment											$ 527	$ 833
Collectively evaluated for impairment											6,071	5,552
Total ending allowance balance	$ 6,598			$ 6,385	$ 6,385			$ 6,846	$ 6,598	$ 6,385	6,598	6,385
ALLL balance, period start				6,385				6,846	6,385	6,846
Charge-offs									(743)	(1,197)
Recoveries									386	421
Provision	255	$ 105	$ 105	105	105	$ 105		105	570	315
ALLL balance, period end	6,598				6,385				6,598	6,385
Commercial And Industrial [Member]
Individually evaluated for impairment											90	388
Collectively evaluated for impairment											358	479
Total ending allowance balance	448			867	867			642	448	867	448	867
ALLL balance, period start				867				642	867	642
Charge-offs									(237)	(280)
Recoveries									90	207
Provision									(272)	298
ALLL balance, period end	448				867				448	867
Real Estate Construction Porfolio Segment [Member]
Individually evaluated for impairment												130
Collectively evaluated for impairment											172	146
Total ending allowance balance	172			276	276			868	172	276	172	276
ALLL balance, period start				276				868	276	868
Charge-offs										(385)
Recoveries
Provision									(104)	(207)
ALLL balance, period end	172				276				172	276
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Individually evaluated for impairment											251	276
Collectively evaluated for impairment											2,567	2,863
Total ending allowance balance	2,818			3,139	3,139			3,703	2,818	3,139	2,818	3,139
ALLL balance, period start				3,139				3,703	3,139	3,703
Charge-offs									(414)	(425)
Recoveries									141	186
Provision									(48)	(325)
ALLL balance, period end	2,818				3,139				2,818	3,139
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Individually evaluated for impairment											186	39
Collectively evaluated for impairment											2,949	2,039
Total ending allowance balance	3,135			2,078	2,078			1,576	3,135	2,078	3,135	2,078
ALLL balance, period start				2,078				1,576	2,078	1,576
Charge-offs									(70)	(92)
Recoveries									140	5
Provision									987	589
ALLL balance, period end	3,135				2,078				3,135	2,078
Consumer Portfolio Segment [Member]
Individually evaluated for impairment
Collectively evaluated for impairment											25	25
Total ending allowance balance	25			25	25			57	25	25	$ 25	$ 25
ALLL balance, period start				$ 25				$ 57	25	57
Charge-offs									(22)	(15)
Recoveries									15	23
Provision									7	(40)
ALLL balance, period end	$ 25				$ 25				$ 25	$ 25

Note 4 - Loans and Related Al61

Note 4 - Loans and Related Allowance for Loan Losses - Impaired Loans by Class (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Recorded investment, with no related allowance	$ 5,405	$ 7,466
Unpaid principal balance, with no related allowance	5,394	7,454
Recorded investment, with related allowance	7,025	6,215
Unpaid principal balance, with related allowance	7,011	6,199
Related allowance	527	833
Recorded investment	12,430	13,681
Unpaid principal balance	12,405	13,653
Commercial Loans [Member]
Recorded investment, with related allowance	5,156
Unpaid principal balance, with related allowance	5,147
Related allowance	186
Commercial And Industrial [Member]
Recorded investment, with no related allowance	319	1,027
Unpaid principal balance, with no related allowance	318	1,025
Recorded investment, with related allowance	871	781
Unpaid principal balance, with related allowance	868	781
Related allowance	90	388
Recorded investment	1,190	1,808
Unpaid principal balance	1,186	1,806
Real Estate Construction Porfolio Segment [Member]
Recorded investment, with no related allowance	913	1,657
Unpaid principal balance, with no related allowance	909	1,651
Recorded investment, with related allowance		130
Unpaid principal balance, with related allowance		130
Related allowance		130
Recorded investment	913	1,787
Unpaid principal balance	909	1,781
Real Estate Construction Porfolio Segment [Member] | Residential Loan [Member]
Recorded investment, with related allowance	993
Unpaid principal balance, with related allowance	991
Related allowance	251
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Recorded investment, with no related allowance	2,142	2,445
Unpaid principal balance, with no related allowance	2,140	2,443
Recorded investment, with related allowance		1,436
Unpaid principal balance, with related allowance		1,436
Related allowance	251	276
Recorded investment	3,135	3,881
Unpaid principal balance	3,131	3,879
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Recorded investment, with no related allowance	2,031	2,337
Unpaid principal balance, with no related allowance	2,027	2,335
Recorded investment, with related allowance		3,862
Unpaid principal balance, with related allowance		3,846
Related allowance	186	39
Recorded investment	7,187	6,199
Unpaid principal balance	7,174	6,181
Consumer Portfolio Segment [Member]
Recorded investment, with no related allowance
Unpaid principal balance, with no related allowance
Recorded investment, with related allowance	5	6
Unpaid principal balance, with related allowance	5	6
Related allowance
Recorded investment	5	6
Unpaid principal balance	$ 5	$ 6

Note 4 - Loans and Related Al62

Note 4 - Loans and Related Allowance for Loan Losses - Additional Information on Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Average recorded investment	$ 13,410	$ 13,440	$ 16,960
Interest income recognized	839	725	640
Commercial And Industrial [Member]
Average recorded investment	1,211	1,468	1,989
Interest income recognized	35	100	85
Real Estate Construction Porfolio Segment [Member]
Average recorded investment	1,281	2,407	3,631
Interest income recognized	62	115	154
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Average recorded investment	3,529	4,356	5,331
Interest income recognized	178	160	171
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Average recorded investment	7,384	5,203	5,998
Interest income recognized	553	350	229
Consumer Portfolio Segment [Member]
Average recorded investment	6	6	11
Interest income recognized	$ 11		$ 1

Note 4 - Loans and Related Al63

Note 4 - Loans and Related Allowance for Loan Losses - Troubled Debt Restructurings (Details) $ in Thousands	Dec. 31, 2015USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2014USD ($)
Commercial And Industrial [Member]
Number of contracts	6	5
Pre-modification outstanding recorded investment	$ 434	$ 610
Post-modification outstanding recorded investment	$ 434	$ 610
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Number of contracts	6	4	3
Pre-modification outstanding recorded investment	$ 515	$ 166	$ 140
Post-modification outstanding recorded investment	$ 535	$ 166	$ 140
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Number of contracts		1
Pre-modification outstanding recorded investment		$ 311
Post-modification outstanding recorded investment		$ 311
Real Estate Construction Porfolio Segment [Member]
Number of contracts	1
Pre-modification outstanding recorded investment	$ 181
Post-modification outstanding recorded investment	$ 181
Commercial Real Estate Portfolio Segment [Member]
Number of contracts	1		1
Pre-modification outstanding recorded investment	$ 270		$ 48
Post-modification outstanding recorded investment	$ 270		$ 48
Consumer Portfolio Segment [Member]
Number of contracts			1
Pre-modification outstanding recorded investment			$ 6
Post-modification outstanding recorded investment			$ 6
Extended Maturity [Member] | Commercial And Industrial [Member]
Number of contracts	6	5
Extended Maturity [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Number of contracts	5	4	3
Extended Maturity [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Number of contracts		1
Extended Maturity [Member] | Real Estate Construction Porfolio Segment [Member]
Number of contracts	1
Extended Maturity [Member] | Commercial Real Estate Portfolio Segment [Member]
Number of contracts	1		1
Extended Maturity [Member] | Consumer Portfolio Segment [Member]
Number of contracts			1
Other Restructurings [Member] | Commercial And Industrial [Member]
Number of contracts
Other Restructurings [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Number of contracts	1
Other Restructurings [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Number of contracts
Other Restructurings [Member] | Real Estate Construction Porfolio Segment [Member]
Number of contracts
Other Restructurings [Member] | Commercial Real Estate Portfolio Segment [Member]
Number of contracts
Other Restructurings [Member] | Consumer Portfolio Segment [Member]
Number of contracts

Note 4 - Loans and Related Al64

Note 4 - Loans and Related Allowance for Loan Losses - Troubled Debt Restructurings Subsequently Defaulted (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Commercial And Industrial [Member]
Number of contracts subsequently defaulted	2	2
Recorded investment subsequently defaulted	$ 7	$ 14
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Number of contracts subsequently defaulted	4		1
Recorded investment subsequently defaulted	$ 278		$ 15
Real Estate Construction Porfolio Segment [Member]
Number of contracts subsequently defaulted	1	1
Recorded investment subsequently defaulted		$ 130
Commercial Real Estate Portfolio Segment [Member]
Number of contracts subsequently defaulted	1
Recorded investment subsequently defaulted	$ 119

Note 4 - Loans and Related Al65

Note 4 - Loans and Related Allowance for Loan Losses - Classes of the Loan Portfolio Summarized by Credit Quality (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans, total	$ 609,140	$ 533,710
Commercial And Industrial [Member]
Loans, total	60,630	42,536
Real Estate Construction Porfolio Segment [Member]
Loans, total	23,709	22,137
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans, total	270,830	232,478
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans, total	249,490	231,701
Consumer Portfolio Segment [Member]
Loans, total	4,481	4,858
Pass [Member]
Loans, total	591,706	512,697
Pass [Member] | Commercial And Industrial [Member]
Loans, total	58,539	40,560
Pass [Member] | Real Estate Construction Porfolio Segment [Member]
Loans, total	23,541	22,007
Pass [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans, total	264,481	225,945
Pass [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans, total	240,678	219,331
Pass [Member] | Consumer Portfolio Segment [Member]
Loans, total	4,467	4,854
Special Mention [Member]
Loans, total	5,657	5,297
Special Mention [Member] | Commercial And Industrial [Member]
Loans, total	663	242
Special Mention [Member] | Real Estate Construction Porfolio Segment [Member]
Loans, total	144
Special Mention [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans, total	428	728
Special Mention [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans, total	4,422	4,327
Substandard [Member]
Loans, total	11,777	15,586
Substandard [Member] | Commercial And Industrial [Member]
Loans, total	1,428	1,734
Substandard [Member] | Real Estate Construction Porfolio Segment [Member]
Loans, total	24
Substandard [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans, total	5,921	5,805
Substandard [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans, total	4,390	8,043
Substandard [Member] | Consumer Portfolio Segment [Member]
Loans, total	14	4
Doubtful [Member]
Loans, total		130
Doubtful [Member] | Commercial And Industrial [Member]
Loans, total
Doubtful [Member] | Real Estate Construction Porfolio Segment [Member]
Loans, total		$ 130
Doubtful [Member] | Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans, total
Doubtful [Member] | Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans, total

Note 4 - Loans and Related Al66

Note 4 - Loans and Related Allowance for Loan Losses - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans, current balance	$ 605,703	$ 529,146
Loans, past due	3,437	4,564
Loans, total	609,140	533,710
Financing Receivables, 30 to 59 Days Past Due [Member]
Loans, past due	2,018	1,912
Financing Receivables, 60 to 89 Days Past Due [Member]
Loans, past due	219	121
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans, past due	1,200	2,531
Commercial And Industrial [Member]
Loans, current balance	60,407	41,544
Loans, past due	223	992
Loans, total	60,630	42,536
Commercial And Industrial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans, past due	17	225
Commercial And Industrial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans, past due	2	26
Commercial And Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans, past due	204	741
Real Estate Construction Porfolio Segment [Member]
Loans, current balance	23,709	22,137
Loans, past due	0	0
Loans, total	23,709	22,137
Real Estate Construction Porfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans, past due	0	0
Real Estate Construction Porfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans, past due	0	0
Real Estate Construction Porfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans, past due	0	0
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans, current balance	268,041	229,725
Loans, past due	2,789	2,753
Loans, total	270,830	232,478
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans, current balance	249,081	230,903
Loans, past due	409	798
Loans, total	249,490	231,701
Real Estate Mortgage Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Loan [Member]
Loans, past due	1,909	1,482
Real Estate Mortgage Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Loans [Member]
Loans, past due	92	189
Real Estate Mortgage Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Loan [Member]
Loans, past due	207	92
Real Estate Mortgage Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Loans [Member]
Loans, past due
Real Estate Mortgage Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Loan [Member]
Loans, past due	673	1,179
Real Estate Mortgage Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Loans [Member]
Loans, past due	317	609
Consumer Portfolio Segment [Member]
Loans, current balance	4,465	4,837
Loans, past due	16	21
Loans, total	4,481	4,858
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Loans, past due		16
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Loans, past due	10	3
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans, past due	$ 6	$ 2

Note 4 - Loans and Related Al67

Note 4 - Loans and Related Allowance for Loan Losses - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans, nonacrrual status	$ 5,903	$ 7,545
Loans, 90+ days past due and accruing	0	2
Commercial And Industrial [Member]
Loans, nonacrrual status	454	1,450
Loans, 90+ days past due and accruing	0	0
Real Estate Construction Porfolio Segment [Member]
Loans, nonacrrual status		130
Loans, 90+ days past due and accruing	0	0
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans, nonacrrual status	4,034	4,122
Loans, 90+ days past due and accruing	0	0
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans, nonacrrual status	1,409	1,842
Loans, 90+ days past due and accruing	0	0
Consumer Portfolio Segment [Member]
Loans, nonacrrual status	6	1
Loans, 90+ days past due and accruing	$ 0	$ 2

Note 5 - Other Real Estate Ow68

Note 5 - Other Real Estate Owned ("OREO") (Details Textual) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Real Estate Acquired Through Foreclosure	$ 934,000	$ 1,412,000
Mortgage Loans in Process of Foreclosure, Amount	$ 1,000,000

Note 6 - Premises and Equipme69

Note 6 - Premises and Equipment (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Depreciation	$ 735,000	$ 715,000	$ 750,000

Note 6 - Premises and Equipme70

Note 6 - Premises and Equipment - Major Classifications of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Land and land improvements	$ 2,891	$ 1,943
Building and leasehold improvements	12,081	11,414
Furniture, fixtures, and equipment	5,404	4,853
	20,376	18,210
Less accumulated depreciation and amortization	9,173	8,438
Total	$ 11,203	$ 9,772

Note 7 - Goodwill and Intangi71

Note 7 - Goodwill and Intangible Assets (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill	$ 4,559,000	$ 4,559,000
Finite-Lived Core Deposits, Gross	36,000	76,000
Core Deposits [Member]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 360,000	320,000
Finite-Lived Intangible Asset, Useful Life	10 years
Amortization of Intangible Assets	$ 40,000	$ 40,000	$ 40,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 36,000

Note 8 - Other Assets - Compone

Note 8 - Other Assets - Components of Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Restricted stock	$ 2,204	$ 1,887
Accrued interest	2,426	2,387
Deferred tax asset, net	1,607	959
Other	1,265	2,244
Total	7,502	7,477
Investment Securities [Member]
Accrued interest	812	1,010
Loans [Member]
Accrued interest	$ 1,614	$ 1,377

Note 9 - Deposits (Details Text

Note 9 - Deposits (Details Textual) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Time Deposit Maturities, Next Twelve Months	$ 76.8
Time Deposit Maturities, Year Two	16.3
Time Deposit Maturities, Year Three	8.4
Time Deposit Maturities, Year Four	46.5
Time Deposit Maturities, Year Five	41.4
Time Deposits, at or Above FDIC Insurance Limit	$ 27.8	$ 29

Note 10 - Short-term Borrowin74

Note 10 - Short-term Borrowings (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Line of Credit Facility, Maximum Borrowing Capacity	$ 6,000,000	$ 10,000,000	$ 4,000,000
Line of Credit Facility, Interest Rate During Period	4.00%	3.93%	4.03%
Long-term Line of Credit	$ 0	$ 9,500,000	$ 3,100,000

Note 10 - Short-term Borrowin75

Note 10 - Short-term Borrowings - Outstanding Balances and Related Information of Short-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Balance at year-end	$ 68,359	$ 35,825
Average balance outstanding	37,130	11,768
Maximum month-end balance	$ 68,359	$ 35,825
Weighted-average rate at year-end	0.61%	1.37%
Weighted-average rate during the year	0.89%	1.65%

Note 10 - Short-term Borrowin76

Note 10 - Short-term Borrowings - Repurchase Agreements (Details) - Overnight and Continuous [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Repurchase agreements	$ 3,635	$ 2,929
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Repurchase agreements	2,667	1,877
US States and Political Subdivisions Debt Securities [Member]
Repurchase agreements	968
US Government Agencies Debt Securities [Member]
Repurchase agreements		$ 1,052

Note 11 - Other Borrowings (Det

Note 11 - Other Borrowings (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Dec. 31, 2006	Dec. 31, 2016
Annual Paydown of Principal Required		20.00%
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds		$ 184,900,000
Stock Issued During Period, Value, New Issues	$ 248,000	$ 11,210,000
Notes Payable	$ 8,248,000
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.67%
Mandatorily Redeemable Securities [Member] | Special Purpose Entity [Member]
Securities Sold under Agreements to Repurchase	$ 8,000,000

Note 11 - Other Borrowings - Ot

Note 11 - Other Borrowings - Other Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Weighted-average rate during the year	0.89%	1.65%
Other borrowings	$ 9,437	$ 9,939
Fixed Rate Amortizing [Member]
Maturity range, minimum	Jul. 1, 2017
Maturity range, maximum	Oct. 1, 2028
Weighted-average rate during the year	4.02%
Other borrowings	$ 1,189	1,691
Fixed Rate Amortizing [Member] | Minimum [Member]
Stated interest rate	2.99%
Fixed Rate Amortizing [Member] | Maximum [Member]
Stated interest rate	4.47%
Junior Subordinated Debt [Member]
Maturity range, minimum	Dec. 21, 1937
Maturity range, maximum	Dec. 21, 1937
Weighted-average rate during the year	2.20%
Other borrowings	$ 8,248	$ 8,248
Junior Subordinated Debt [Member] | Minimum [Member]
Stated interest rate	2.20%
Junior Subordinated Debt [Member] | Maximum [Member]
Stated interest rate	2.20%

Note 11 - Other Borrowings - Ma

Note 11 - Other Borrowings - Maturities of Other Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
2017, amount	$ 373
2017, weighted-average interest rate	4.00%
2018, amount	$ 252
2018, weighted-average interest rate	4.02%
2019, amount	$ 155
2019, weighted-average interest rate	4.04%
2020, amount	$ 116
2020, weighted-average interest rate	4.04%
2021, amount	$ 87
2021, weighted-average interest rate	4.05%
Beyond 2021, amount	$ 8,454
Beyond 2021, weighted-average interest rate	2.25%
Other borrowings	$ 9,437	$ 9,939
Total, weighted-average interest rate	2.37%

Note 12 - Other Liabilities - C

Note 12 - Other Liabilities - Components of Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accrued interest payable	$ 395	$ 395
Supplemental Executive Retirement Plan	1,125	1,091
Accrued salary expense	768	689
Other	843	449
Total	$ 3,131	$ 2,624

Note 13 - Income Taxes (Details

Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets, Valuation Allowance	$ 0	$ 0
Unrecognized Tax Benefits	$ 0	$ 0

Note 13 - Income Taxes - The Pr

Note 13 - Income Taxes - The Provision (Benefit) for Federal Income Taxes (Details) - 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 payable									$ 1,998	$ 1,004	$ 2,146
Deferred income taxes									(93)	558	(154)
Total provision	$ 776	$ 261	$ 566	$ 302	$ 298	$ 544	$ 316	$ 404	$ 1,905	$ 1,562	$ 1,992

Note 13 - Income Taxes - Deferr

Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for loan and lease losses	$ 2,243	$ 2,171
Supplemental retirement plan	382	371
Investment security basis adjustment	66	66
Nonaccrual interest income	456	415
Deferred origination fees, net		12
OREO adjustments	26	92
Accrued compensation	261	234
Other	82	23
Gross deferred tax assets	3,516	3,384
Deferred tax liabilities:
Premises and equipment	445	514
Net unrealized gain on securities	618	1,233
FHLB stock dividends	225	225
Intangibles	449	401
Mortgage servicing rights	103	68
Deferred origination fees, net	63
Other	6	44
Gross deferred tax liabilities	1,909	2,485
Net deferred tax assets	$ 1,607	$ 899

Note 13 - Income Taxes - Tax Ra

Note 13 - Income Taxes - Tax Rate Reconciliation (Details) - 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
Provision at statutory rate, amount									$ 2,829	$ 2,866	$ 3,119
Provision at statutory rate, percent									34.00%	34.00%	34.00%
Tax-free income, amount									$ (1,177)	$ (1,347)	$ (1,187)
Tax-free income, percent									(14.10%)	(15.90%)	(12.90%)
Nondeductible interest expense, amount									$ 32	$ 34	$ 37
Nondeductible interest expense, percent									0.40%	0.40%	0.40%
Nondeductible merger-related expense, amount									$ 186
Nondeductible merger-related expense, percent									2.20%	0.00%	0.00%
Other, amount									$ 35	$ 9	$ 23
Other, percent									0.40%	0.00%	0.20%
Total provision	$ 776	$ 261	$ 566	$ 302	$ 298	$ 544	$ 316	$ 404	$ 1,905	$ 1,562	$ 1,992
Actual tax expense and effective rate, percent									22.90%	18.50%	21.70%

Note 14 - Employee Benefits (De

Note 14 - Employee Benefits (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Retirement Plan [Member]
Deferred Compensation Arrangement with Individual, Requisite Service Period	1 year
Defined Contribution Plan Employer Voluntary Matching Bank Contribution	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	6.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 years
Defined Benefit Plan, Contributions by Employer	$ 156,000	$ 156,000	$ 143,000
Retirement Plan [Member] | Middlefield Banking Company [Member]
Defined Contribution Plan Annual Vesting Percentage	20.00%
Directors Retirement Plan [Member] | Middlefield Banking Company [Member]
Deferred Compensation Arrangement with Individual, Requisite Service Period	5 years
Retirement Benefits Term	10 years
Postretirement Benefits Percentage of Compensation	25.00%
Executive Deferred Compensation Plan [Member] | Middlefield Banking Company [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 99,000	$ 65,000	$ 115,000
Stock Option and Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	160,000
Stock Option and Restricted Stock Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	10 years
Omnibus Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0

Note 14 - Employee Benefits - P

Note 14 - Employee Benefits - Projected Benefit Payments (Details) $ in Millions	Dec. 31, 2016USD ($)
2,017	$ 23
2,018	18
2,019	12
2,020	10
2,021	2
Total	$ 65

Note 14 - Employee Benefits - S

Note 14 - Employee Benefits - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Outstanding, January 1 (in shares)	31,949	46,451
Outstanding, January 1 (in dollars per share)	$ 25.03	$ 27.90
Expired (in shares)	(2,125)	(10,802)
Expired (in dollars per share)	$ 40.24	$ 36.93
Exercised (in shares)	(500)	(2,175)
Exercised (in dollars per share)	$ 23	$ 21.31
Forfeited (in shares)		(1,525)
Forfeited (in dollars per share)		$ 33.53
Outstanding, December 31 (in shares)	29,324	31,949
Outstanding, December 31 (in dollars per share)	$ 23.67	$ 25.03
Exercisable, December 31 (in shares)	29,324	31,949
Exercisable, December 31 (in dollars per share)	$ 23.67	$ 25.03

Note 14 - Employee Benefits -88

Note 14 - Employee Benefits - Stock Options Outstanding by Grant Date (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Outstanding, shares (in shares)	29,324	31,949	46,451
Outstanding, weighted average exercise price (in dollars per share)	$ 23.67	$ 25.03	$ 27.90
Exercisable, December 31 (in shares)	29,324	31,949
Exercisable, December 31 (in dollars per share)	$ 23.67	$ 25.03
Exercise Price Range 1 [Member]
Exercise price (in dollars per share)	$ 37.48
Outstanding, shares (in shares)	1,337
Outstanding, contractual average life (Year)	131 days
Outstanding, weighted average exercise price (in dollars per share)	$ 37.48
Exercisable, December 31 (in shares)	1,337
Exercisable, December 31 (in dollars per share)	$ 37.48
Exercise Price Range 2 [Member]
Exercise price (in dollars per share)	$ 37
Outstanding, shares (in shares)	1,950
Outstanding, contractual average life (Year)	339 days
Outstanding, weighted average exercise price (in dollars per share)	$ 37
Exercisable, December 31 (in shares)	1,950
Exercisable, December 31 (in dollars per share)	$ 37
Exercise Price Range 3 [Member]
Exercise price (in dollars per share)	$ 36.25
Outstanding, shares (in shares)	1,337
Outstanding, contractual average life (Year)	1 year
Outstanding, weighted average exercise price (in dollars per share)	$ 36.25
Exercisable, December 31 (in shares)	1,337
Exercisable, December 31 (in dollars per share)	$ 36.25
Exercise Price Range 4 [Member]
Exercise price (in dollars per share)	$ 23
Outstanding, shares (in shares)	16,500
Outstanding, contractual average life (Year)	1 year 310 days
Outstanding, weighted average exercise price (in dollars per share)	$ 23
Exercisable, December 31 (in shares)	16,500
Exercisable, December 31 (in dollars per share)	$ 23
Exercise Price Range 5 [Member]
Exercise price (in dollars per share)	$ 17.55
Outstanding, shares (in shares)	8,200
Outstanding, contractual average life (Year)	4 years 127 days
Outstanding, weighted average exercise price (in dollars per share)	$ 17.55
Exercisable, December 31 (in shares)	8,200
Exercisable, December 31 (in dollars per share)	$ 17.55

Note 15 - Commitments (Details

Note 15 - Commitments (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leases, Rent Expense	$ 285,000	$ 288,000	$ 269,000

Note 15 - Commitments - Outstan

Note 15 - Commitments - Outstanding Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commitments	$ 163,062	$ 116,538
Commitments to Extend Credit [Member]
Commitments	161,646	112,134
Financial Standby Letter of Credit [Member]
Commitments	$ 1,416	$ 4,404

Note 15 - Commitments - Future

Note 15 - Commitments - Future Payments Under Operating Leases (Details) $ in Thousands	Dec. 31, 2016USD ($)
2,017	$ 324
2,018	325
2,019	320
2,020	332
2,021	321
Thereafter	1,749
	$ 3,371

Note 16 - Regulatory Restrict92

Note 16 - Regulatory Restrictions (Details Textual) - USD ($) $ in Millions	87 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Nonperforming Assets Sold	$ 5.8
Reserves Required by Federal Reserve Bank	$ 8.2	$ 6.9
Percent of Common Stock	10.00%
Amount Available for Payment of Dividends	$ 8.4

Note 17 - Regulatory Capital (D

Note 17 - Regulatory Capital (Details Textual)	12 Months Ended
	Dec. 31, 2016	Jan. 01, 2019
Capital Conservation Buffer Phase in Amount	0.625%
Capital Conservation Buffer Phase-in Number of Years	4 years
Scenario, Forecast [Member]
Capital Conservation Buffer Maximum Percentage		2.50%

Note 17 - Regulatory Capital -

Note 17 - Regulatory Capital - Capital Ratios (Details)	Dec. 31, 2016	Dec. 31, 2015
Leverage capital, adequately capitalized, ratio	4.00%	4.00%
Tier 1 risk based capital, adequately capitalized, ratio	6.00%	6.00%
Common equity tier 1 capital, adequately capitalized, ratio	4.50%	4.50%
Total risk based capital, adequately capitalized, ratio	8.00%	8.00%
Leverage capital, adequately capitalized plus capital conservation buffer, ratio	4.00%	4.00%
Tier 1 risk based capital, adequately capitalized plus capital conservation buffer, ratio	8.50%	8.50%
Common equity tier 1 capital, adequately capitalized plus capital conservation buffer, ratio	7.00%	7.00%
Total risk based capital, adequately capitalized plus capital conservation buffer, ratio	10.50%	10.50%
Middlefield Banking Company [Member]
Leverage capital, actual, ratio	9.46%	9.23%
Tier 1 risk based capital, actual, ratio	13.03%	12.52%
Common equity tier 1 capital, actual, ratio	13.03%	12.52%
Total risk based capital, actual, ratio	14.25%	13.73%
Leverage capital, well-capitalized, ratio (bank only)	5.00%	5.00%
Tier 1 risk based capital, well-capitalized, ratio (bank only)	8.00%	8.00%
Common equity tier 1 capital, well-capitalized, ratio (bank only)	6.50%	6.50%
Total risk based capital, well-capitalized, ratio (bank only)	10.00%	10.00%
Middlefield Banc Corp [Member]
Leverage capital, actual, ratio	9.27%	8.69%
Tier 1 risk based capital, actual, ratio	13.07%	12.00%
Common equity tier 1 capital, actual, ratio	13.07%	12.00%
Total risk based capital, actual, ratio	15.75%	13.20%

Note 18 - Fair Value Disclosu95

Note 18 - Fair Value Disclosure Measurments - Assets Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment securities available for sale, at fair value	$ 114,376	$ 146,520
US Government Agencies Debt Securities [Member]
Investment securities available for sale, at fair value	10,236	21,629
US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale, at fair value	81,223	97,290
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Investment securities available for sale, at fair value	20,069	24,524
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Investment securities available for sale, at fair value	1,709	2,263
Debt Securities [Member]
Investment securities available for sale, at fair value	113,237	145,706
Equity Securities In Financial Institutions [Member]
Investment securities available for sale, at fair value	1,139	814
Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	114,376	146,520
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value	114,376	146,520
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Investment securities available for sale, at fair value	10,236	21,629
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale, at fair value	81,223	97,290
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Investment securities available for sale, at fair value	20,069	24,524
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Investment securities available for sale, at fair value	1,709	2,263
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Debt Securities [Member]
Investment securities available for sale, at fair value	113,237	145,706
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities In Financial Institutions [Member]
Investment securities available for sale, at fair value	1,139	814
Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available for sale, at fair value
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities In Financial Institutions [Member]
Investment securities available for sale, at fair value

Note 18 - Fair Value Disclosu96

Note 18 - Fair Value Disclosure Measurements - Assets Measured on a Nonrecurring Basis (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Impaired loans	$ 12,430,000	$ 13,681,000
Other real estate owned	934,000	1,412,000
Estimate of Fair Value Measurement [Member]
Impaired loans	6,498,000	12,848,000
Other real estate owned	511,000	1,412,000
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Impaired loans	6,498,000	12,848,000
Other real estate owned	$ 511,000	$ 1,412,000

Note 18 - Fair Value Disclosu97

Note 18 - Fair Value Disclosure Measurements - Additional Quantitative Information about Assets Measured at Fair Value on Non-recurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Impaired Loans [Member] | Income Approach Valuation Technique [Member]
Fair value estimate		$ 4,928	$ 6,867
Valuation techniques		Discounted cash flow	Discounted cash flow
Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Minimum [Member]
Discount rate		3.10%	3.10%
Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Maximum [Member]
Discount rate		7.00%	7.90%
Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Weighted Average [Member]
Discount rate		5.10%	5.00%
Impaired Loans [Member] | Appraisal Adjustments [Member]
Fair value estimate		$ 1,570	$ 5,981
Valuation techniques	[1],[2]	Appraisal of collateral / Appraisal adjustments	Appraisal of collateral / Appraisal adjustments
Impaired Loans [Member] | Appraisal Adjustments [Member] | Minimum [Member]
Discount rate		0.00%	0.00%
Impaired Loans [Member] | Appraisal Adjustments [Member] | Maximum [Member]
Discount rate		59.70%	87.10%
Impaired Loans [Member] | Appraisal Adjustments [Member] | Weighted Average [Member]
Discount rate		28.20%	23.30%
Other Real Estate Owned [Member] | Appraisal Adjustments [Member]
Fair value estimate		$ 511	$ 1,412
Valuation techniques	[1],[2]	Appraisal of collateral / Appraisal adjustments	Appraisal of collateral / Appraisal adjustments
Other Real Estate Owned [Member] | Appraisal Adjustments [Member] | Minimum [Member]
Discount rate		0.00%	0.00%
Other Real Estate Owned [Member] | Appraisal Adjustments [Member] | Maximum [Member]
Discount rate		10.00%	10.00%
Other Real Estate Owned [Member] | Appraisal Adjustments [Member] | Weighted Average [Member]
Discount rate			7.30%
[1]	Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.
[2]	Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.

Note 18 - Fair Value Disclosu98

Note 18 - Fair Value Disclosure Measurements - Estimated Fair Value of the Company's Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and cash equivalents	$ 32,495	$ 23,750	$ 25,639	$ 26,193
Cash and cash equivalents, fair value	32,495	23,750
Investment securities available for sale, at fair value	114,376	146,520
Loans held for sale	634	1,107
Loans held for sale, fair value	634	1,107
Net loans	602,542	527,325
Net loans, fair value	604,447	534,021
Bank owned life insurance	13,540	13,141
Bank-owned life insurance, fair value	13,540	13,141
Restricted stock	2,204	1,887
Accrued interest receivable	2,426	2,387
Accrued interest receivable, fair value	2,426	2,387
Total deposits	629,934	624,447
Deposits, fair value	630,371	624,973
Short-term borrowings	68,359	35,825
Short-term borrowings, fair value	68,359	35,825
Other borrowings	9,437	9,939
Other borrowings, fair value	9,512	10,063
Accrued interest payable	395	395
Accrued interest payable, fair value	395	395
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents, fair value	32,495	23,750
Investment securities available for sale, at fair value
Bank owned life insurance	13,540	13,141
Bank-owned life insurance, fair value	13,540	13,141
Restricted stock	2,204	1,887
Accrued interest receivable	2,426	2,387
Accrued interest receivable, fair value	2,426	2,387
Deposits, fair value	440,500	433,226
Short-term borrowings, fair value	68,359	35,825
Accrued interest payable	395	395
Accrued interest payable, fair value	395	395
Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	114,376	146,520
Loans held for sale, fair value	634	1,107
Restricted stock
Deposits, fair value
Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale, at fair value
Net loans, fair value	604,447	534,021
Restricted stock
Deposits, fair value	189,871	191,747
Other borrowings, fair value	$ 9,512	$ 10,063

Note 19 - Accumulate Other Comp

Note 19 - Accumulate Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Beginning balance	[1]	$ 2,395
Other comprehensive loss before reclassification	[1]	(994)
Amount reclassified from accumulated other comprehensive income	[1]	(200)
Total other comprehensive (loss) income		(1,194)	[1]	$ (153)	$ 4,785
Ending balance	[1]	$ 1,201		$ 2,395
[1]	All amounts are net of tax. Amounts in parentheses indicate debits.

Note 19 - Accumulated Other 100

Note 19 - Accumulated Other Comprehensive Income - Significant Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Unrealized gains on available-for-sale securities	[1]	$ 303	$ 323
Income taxes	[1]	(103)	(110)
Net of tax	[1]	$ 200	$ 213
[1]	Amounts in parentheses indicate debits to net income

Note 20 - Subsequent Event (Det

Note 20 - Subsequent Event (Details Textual) - Merger of Liberty Bank, N.A. into The Middlefield Banking Company [member] - Subsequent Event [Member] $ / shares in Units, $ in Millions	Jan. 12, 2017USD ($)$ / sharesshares
Business Combination, Merger Agreement, Cash Per Share of Reporting Entity Common Stock | $ / shares	$ 37.96
Business Combination, Merger Agreement, Ratio of Shares of Reporting Entity's Common Stock for Each Share of Acquired Entity's Common Stock	1.1934
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	557,079
Business Combination, Consideration Transferred | $	$ 43.1

Note 20 - Subsequent Event - Un

Note 20 - Subsequent Event - Unaudited Pro Forma Combined Consolidated Condensed Balance Sheet (Details) - USD ($)		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and due from banks		$ 31,395,000	$ 22,421,000
Fed funds sold		1,100,000	1,329,000
Cash and cash equivalents		32,495,000	23,750,000
Investment securities available for sale, at fair value		114,376,000	146,520,000
Loans held for sale		634,000	1,107,000
Financing Receivable Gross		609,140,000	533,710,000
Less allowance for loan and lease losses		6,598,000	6,385,000	$ 6,846,000
Net loans		602,542,000	527,325,000
Premises and equipment, net		11,203,000	9,772,000
Goodwill		4,559,000	4,559,000
Core deposit intangibles		36,000	76,000
Bank owned life insurance		13,540,000	13,141,000
Other real estate owned		934,000	1,412,000
Accrued interest and other assets		7,502,000	7,477,000
TOTAL ASSETS		787,821,000	735,139,000
Noninterest-bearing demand		133,630,000	116,498,000
Interest-bearing demand		59,560,000	57,219,000
Money market		74,940,000	78,856,000
Savings		172,370,000	180,653,000
Time		189,434,000	191,221,000
Total deposits		629,934,000	624,447,000
Short-term borrowings		68,359,000	35,825,000
Other borrowings		9,437,000	9,939,000
Accrued interest and other liabilities		3,131,000	2,624,000
TOTAL LIABILITIES		710,861,000	672,835,000
Common stock		47,943,000	36,191,000
Retained earnings		41,334,000	37,236,000
Accumulated other comprehensive income	[1]	1,201,000	2,395,000
Treasury stock		(13,518,000)	(13,518,000)
TOTAL STOCKHOLDERS' EQUITY		76,960,000	62,304,000	$ 63,867,000	$ 53,473,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		787,821,000	$ 735,139,000
Merger of Liberty Bank, N.A. into The Middlefield Banking Company [member] | Pro Forma [Member]
Cash and due from banks		52,718,000
Fed funds sold		1,100,000
Cash and cash equivalents		53,818,000
Investment securities available for sale, at fair value		113,796,000
Loans held for sale		992,000
Financing Receivable Gross		807,450,000
Less allowance for loan and lease losses		6,598,000
Net loans		800,852,000
Premises and equipment, net		11,535,000
Goodwill		13,807,000
Core deposit intangibles		3,123,000
Bank owned life insurance		15,193,000
Other real estate owned		934,000
Accrued interest and other assets		10,310,000
TOTAL ASSETS		1,024,360,000
Noninterest-bearing demand		171,711,000
Interest-bearing demand		83,759,000
Money market		170,155,000
Savings		182,364,000
Time		220,697,000
Total deposits		828,686,000
Short-term borrowings		68,359,000
Other borrowings		21,437,000
Accrued interest and other liabilities		7,434,000
TOTAL LIABILITIES		925,916,000
Common stock		69,502,000
Retained earnings		41,259,000
Accumulated other comprehensive income		1,201,000
Treasury stock		(13,518,000)
TOTAL STOCKHOLDERS' EQUITY		98,444,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$ 1,024,360,000
[1]	All amounts are net of tax. Amounts in parentheses indicate debits.

Note 20 - Subsequent Event -103

Note 20 - Subsequent Event - Unaudited Pro Forma Combined Consolidated Condensed Statement of Income (Details) - 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
Interest and fees on originated loans									$ 25,798	$ 23,824	$ 22,726
Interest bearing deposits in other institutions									53	33	24
Federal funds sold									20	13	14
Investment securities	$ 7,821	$ 7,420	$ 7,405	$ 7,348	$ 7,343	$ 7,151	$ 7,066	$ 7,035
Dividends on stock									104	98	87
Total interest and dividend income									29,994	28,595	27,874
Deposits									3,618	3,426	3,633
Short-term borrowings									322	194	148
Other borrowings									68	83	118
Trust preferred securities									182	117	171
Total interest expense	1,073	1,026	1,066	1,025	988	959	990	883	4,190	3,820	4,070
Net interest income	6,748	6,394	6,339	6,323	6,355	6,192	6,076	6,152	25,804	24,775	23,804
Provision for loan and lease losses									570	315	370
Net interest income after provision for loan and lease losses	6,493	6,289	6,234	6,218	6,250	6,087	6,076	6,047	25,234	24,460	23,434
Service charges on deposit accounts									1,940	1,874	1,876
Investment securities gains, net									303	323	248
Earnings on bank-owned life insurance									403	624	276
Gains on sale of loans									419	329	237
Other income									479	458	500
Total noninterest income	485	977	1,173	909	1,178	1,108	962	796	3,959	4,044	3,588
Salaries and employee benefits									10,249	9,751	8,817
Occupancy expense									1,252	1,253	1,108
Equipment expense									991	944	963
Data processing costs									1,335	1,071	917
Other expense									2,601	2,850	2,296
Total noninterest expense	4,957	5,662	4,915	5,338	5,380	4,669	5,217	4,811	20,872	20,077	17,850
Income before taxes	2,021	1,604	2,492	1,789	2,048	2,526	1,821	2,032	8,321	8,427	9,172
Income taxes	776	261	566	302	298	544	316	404	1,905	1,562	1,992
NET INCOME	$ 1,245	$ 1,343	$ 1,926	$ 1,487	$ 1,750	$ 1,982	$ 1,505	$ 1,628	$ 6,416	$ 6,865	$ 7,180
Pro forma net income per common share - basic (in dollars per share)	$ 0.55	$ 0.60	$ 0.94	$ 0.79	$ 0.93	$ 0.96	$ 0.73	$ 0.79	$ 3.04	$ 3.41	$ 3.52
Pro forma net income per common share - diluted (in dollars per share)	$ 0.55	$ 0.60	$ 0.94	$ 0.79	$ 0.92	$ 0.96	$ 0.73	$ 0.78	$ 3.03	$ 3.39	$ 3.50
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share (in shares)	2,251,412	2,247,587	2,051,137	1,878,177	1,884,484	2,064,054	2,058,986	2,053,660	2,107,857	2,014,966	2,041,635
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share (in shares)	2,259,589	2,256,230	2,059,411	1,886,943	1,893,345	2,072,639	2,068,313	2,062,867	2,119,214	2,024,120	2,049,506
Merger of Liberty Bank, N.A. into The Middlefield Banking Company [member] | Pro Forma [Member]
Interest and fees on originated loans									$ 35,308	$ 31,986
Interest bearing deposits in other institutions									210	124
Federal funds sold									20	13
Investment securities									4,019	4,627
Dividends on stock									138	164
Total interest and dividend income									39,695	36,914
Deposits									4,315	4,265
Short-term borrowings									322	194
Other borrowings									560	575
Trust preferred securities									182	117
Total interest expense									5,379	5,151
Net interest income									34,316	31,763
Provision for loan and lease losses									570	315
Net interest income after provision for loan and lease losses									33,746	31,448
Service charges on deposit accounts									2,266	2,156
Investment securities gains, net									303	323
Earnings on bank-owned life insurance									430	678
Gains on sale of loans									1,257	805
Other income									1,229	1,224
Total noninterest income									5,485	5,186
Salaries and employee benefits									14,523	13,454
Occupancy expense									1,762	1,746
Equipment expense									1,206	1,156
Data processing costs									1,931	1,489
Amortization of Intangible Assets									382	382
Other expense									8,919	8,453
Total noninterest expense									28,723	26,680
Income before taxes									10,508	9,954
Income taxes									2,473	1,954
NET INCOME									8,035	8,000
Less: Income attributable to common stock subject to possible conversion
Pro forma net income attributable to common stock not subject to possible conversion									$ 8,035	$ 8,000
Pro forma net income per common share - basic (in dollars per share)									$ 3.02	$ 3.11
Pro forma net income per common share - diluted (in dollars per share)									$ 3	$ 3.10
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share (in shares)									2,664,936	2,572,045
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share (in shares)									2,676,293	2,581,199

Note 21 - Parent Company - Cond

Note 21 - Parent Company - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and due from banks	$ 31,395	$ 22,421
Investment securities available for sale, at fair value	114,376	146,520
Other assets	7,502	7,477
TOTAL ASSETS	787,821	735,139
Short-term borrowings	68,359	35,825
TOTAL LIABILITIES	710,861	672,835
TOTAL STOCKHOLDERS' EQUITY	76,960	62,304	$ 63,867	$ 53,473
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	787,821	735,139
Parent Company [Member]
Cash and due from banks	2,543	1,329
Investment securities available for sale, at fair value	1,139	814
Other assets	2,837	2,475
TOTAL ASSETS	85,244	80,097
Trust preferred securities	8,248	8,248
Short-term borrowings		9,499
Other liabilities	36	43
TOTAL LIABILITIES	8,284	17,790
TOTAL STOCKHOLDERS' EQUITY	76,960	62,307
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	85,244	80,097
Parent Company [Member] | Non Bank Subsidiary [Member]
Equity method investments	2,360	2,418
Parent Company [Member] | Subsidiary Banks [Member]
Equity method investments	$ 76,365	$ 73,061

Note 21 - Parent Company - C105

Note 21 - Parent Company - Condensed Statement of Comprehensive Income (Details) - 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
Total income									$ 29,994	$ 28,595	$ 27,874
Total interest expense	$ 1,073	$ 1,026	$ 1,066	$ 1,025	$ 988	$ 959	$ 990	$ 883	4,190	3,820	4,070
Income before taxes	2,021	1,604	2,492	1,789	2,048	2,526	1,821	2,032	8,321	8,427	9,172
Income taxes	776	261	566	302	298	544	316	404	1,905	1,562	1,992
NET INCOME	$ 1,245	$ 1,343	$ 1,926	$ 1,487	$ 1,750	$ 1,982	$ 1,505	$ 1,628	6,416	6,865	7,180
Comprehensive Income									5,222	6,712	11,965
Parent Company [Member]
Dividends from subsidiary bank									3,400	4,023	3,142
Other									24	19	8
Total income									3,424	4,042	3,150
Total interest expense									366	290	304
Other									1,856	860	816
Total expenses									2,222	1,150	1,120
Income before taxes									1,202	2,892	2,030
Income taxes									(561)	(386)	(378)
Income before equity in undistributed net income of subsidiaries									1,763	3,278	2,408
Equity in undistributed net income of subsidiaries									4,653	3,587	4,772
NET INCOME									6,416	6,865	7,180
Comprehensive Income									$ 5,222	$ 6,712	$ 11,965

Note 21 - Parent Company - C106

Note 21 - Parent Company - Condensed Statement of Cash Flows (Details) - 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
NET INCOME	$ 1,245	$ 1,343	$ 1,926	$ 1,487	$ 1,750	$ 1,982	$ 1,505	$ 1,628	$ 6,416	$ 6,865	$ 7,180
Other									678	121	(831)
Net cash provided by operating activities									7,801	7,182	7,459
Net (decrease) increase in short-term borrowings									32,534	21,017	3,999
Purchase of treasury stock										(6,784)
Common stock issued									11,210
Cash dividends									2,318	2,153
Net cash provided by (used for) financing activities									46,924	50,374	18,709
Increase (decrease) in cash and cash equivalents									8,745	(1,889)	(554)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR				23,750				25,639	23,750	25,639	26,193
CASH AND CASH EQUIVALENTS AT END OF YEAR	32,495				23,750				32,495	23,750	25,639
Parent Company [Member]
NET INCOME									6,416	6,865	7,180
Equity method investments, income (loss)									(4,653)	(3,587)	(4,772)
Stock-based compensation expense									29	18	10
Other									(484)	(503)	(409)
Net cash provided by operating activities									1,308	2,793	2,009
Net (decrease) increase in short-term borrowings									(9,499)	6,363	(759)
Purchase of treasury stock										(6,784)
Common stock issued									11,210
Stock options exercised									(6)	(7)	(50)
Proceeds from dividend reinvestment plan									519	651	590
Cash dividends									(2,318)	(2,153)	(2,121)
Net cash provided by (used for) financing activities									(94)	(1,930)	(2,340)
Increase (decrease) in cash and cash equivalents									1,214	863	(331)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR				$ 1,329				$ 466	1,329	466	797
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 2,543				$ 1,329				2,543	1,329	466
Parent Company [Member] | Middlefield Banking Company [Member]
Equity method investments, income (loss)									(4,710)	(3,703)	(4,798)
Parent Company [Member] | EMORECO [Member]
Equity method investments, income (loss)									$ 57	$ 116	$ 26

Note 22 - Selected Quarterly107

Note 22 - Selected Quarterly Financial Data (Unaudited) - Selected Quarterly Financial Data (Unaudited) (Details) - 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
Investment securities	$ 7,821	$ 7,420	$ 7,405	$ 7,348	$ 7,343	$ 7,151	$ 7,066	$ 7,035
Total interest expense	1,073	1,026	1,066	1,025	988	959	990	883	$ 4,190	$ 3,820	$ 4,070
Net interest income	6,748	6,394	6,339	6,323	6,355	6,192	6,076	6,152	25,804	24,775	23,804
Provision for loan losses	255	105	105	105	105	105		105	570	315
Net interest income after provision for loan and lease losses	6,493	6,289	6,234	6,218	6,250	6,087	6,076	6,047	25,234	24,460	23,434
Total noninterest income	485	977	1,173	909	1,178	1,108	962	796	3,959	4,044	3,588
Total noninterest expense	4,957	5,662	4,915	5,338	5,380	4,669	5,217	4,811	20,872	20,077	17,850
Income before taxes	2,021	1,604	2,492	1,789	2,048	2,526	1,821	2,032	8,321	8,427	9,172
Income taxes	776	261	566	302	298	544	316	404	1,905	1,562	1,992
NET INCOME	$ 1,245	$ 1,343	$ 1,926	$ 1,487	$ 1,750	$ 1,982	$ 1,505	$ 1,628	$ 6,416	$ 6,865	$ 7,180
Pro forma net income per common share - basic (in dollars per share)	$ 0.55	$ 0.60	$ 0.94	$ 0.79	$ 0.93	$ 0.96	$ 0.73	$ 0.79	$ 3.04	$ 3.41	$ 3.52
Pro forma net income per common share - diluted (in dollars per share)	$ 0.55	$ 0.60	$ 0.94	$ 0.79	$ 0.92	$ 0.96	$ 0.73	$ 0.78	$ 3.03	$ 3.39	$ 3.50
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share (in shares)	2,251,412	2,247,587	2,051,137	1,878,177	1,884,484	2,064,054	2,058,986	2,053,660	2,107,857	2,014,966	2,041,635
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share (in shares)	2,259,589	2,256,230	2,059,411	1,886,943	1,893,345	2,072,639	2,068,313	2,062,867	2,119,214	2,024,120	2,049,506