Civista Bancshares (CIVB) 10-Q 10 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 04, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	Civb
Entity Registrant Name	CIVISTA BANCSHARES, INC.
Entity Central Index Key	944,745
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		10,259,784

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from financial institutions	$ 118,970	$ 40,519
Securities available for sale	234,042	230,230
Equity securities	873	832
Loans held for sale	2,379	2,197
Loans, net of allowance of $12,814 and $13,134	1,140,944	1,151,527
Other securities	14,247	14,247
Premises and equipment, net	17,424	17,611
Accrued interest receivable	4,842	4,488
Goodwill	27,095	27,095
Other intangible assets	1,259	1,279
Bank owned life insurance	25,267	25,125
Other assets	12,963	10,707
Total assets	1,600,305	1,525,857
Deposits
Noninterest-bearing	535,225	361,964
Interest-bearing	755,446	842,959
Total deposits	1,290,671	1,204,923
Federal Home Loan Bank advances	60,000	71,900
Securities sold under agreements to repurchase	17,452	21,755
Subordinated debentures	29,427	29,427
Accrued expenses and other liabilities	14,712	13,391
Total liabilities	1,412,262	1,341,396
SHAREHOLDERS’ EQUITY
Preferred shares, no par value, 200,000 shares authorized, Series B Preferred shares, $1,000 liquidation preference, 18,409 shares issued at March 31, 2018 and 18,760 shares issued at December 31, 2017, net of issuance costs	17,034	17,358
Common shares, no par value, 20,000,000 shares authorized, 10,991,238 shares issued at March 31, 2018 and 10,946,439 shares issued at December 31, 2017	154,170	153,810
Retained earnings	37,902	31,652
Treasury shares, 747,964 common shares at cost	(17,235)	(17,235)
Accumulated other comprehensive loss	(3,828)	(1,124)
Total shareholders’ equity	188,043	184,461
Total liabilities and shareholders’ equity	$ 1,600,305	$ 1,525,857

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Allowance for loan losses	$ 12,814	$ 13,134
Preferred shares, no par value
Preferred shares, shares authorized	200,000	200,000
Preferred shares, liquidation preference	$ 1,000	$ 1,000
Preferred shares, shares issued	18,409	18,760
Common shares, no par value
Common shares, shares authorized	20,000,000	20,000,000
Common shares, shares issued	10,991,238	10,946,439
Treasury shares, common shares	747,964	747,964

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest and dividend income
Loans, including fees	$ 13,639	$ 11,777
Taxable securities	986	847
Tax-exempt securities	878	712
Federal funds sold and other	421	356
Total interest and dividend income	15,924	13,692
Interest expense
Deposits	707	465
Federal Home Loan Bank advances	152	88
Subordinated debentures	288	241
Securities sold under agreements to repurchase and other	5	6
Total interest expense	1,152	800
Net interest income	14,772	12,892
Net interest income after provision for loan losses	14,772	12,892
Noninterest income
Service charges	1,134	1,045
Net gain on equity securities	40
Net gain on sale of loans	333	257
ATM/Interchange fees	554	510
Wealth management fees	852	707
Bank owned life insurance	142	144
Tax refund processing fees	2,200	2,200
Other	361	275
Total noninterest income	5,616	5,138
Noninterest expense
Compensation expense	7,374	6,982
Net occupancy expense	761	658
Equipment expense	374	329
Contracted data processing	348	388
FDIC assessment	151	165
State franchise tax	318	257
Professional services	552	451
Amortization of intangible assets	33	167
ATM expense	218	254
Marketing	318	252
Other operating expenses	1,758	1,599
Total noninterest expense	12,205	11,502
Income before taxes	8,183	6,528
Income tax expense	1,194	1,893
Net Income	6,989	4,635
Preferred stock dividends	303	319
Net income available to common shareholders	$ 6,686	$ 4,316
Earnings per common share, basic	$ 0.65	$ 0.47
Earnings per common share, diluted	$ 0.55	$ 0.40

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 6,989	$ 4,635
Other comprehensive income (loss):
Unrealized holding gains (losses) on available for sale securities	(3,214)	452
Tax effect	675	(153)
Pension liability adjustment	143	94
Tax effect	(30)	(32)
Total other comprehensive income (loss)	(2,426)	361
Comprehensive income	$ 4,563	$ 4,996

Condensed Consolidated Statemen

Condensed Consolidated Statement of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Shares [Member]	Common Shares [Member]	Retained Earnings [Member]	Treasury Shares [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance at Dec. 31, 2016						$ (2,337)
Net Income	$ 4,635
Other comprehensive loss	361					361
Ending balance at Mar. 31, 2017						(1,976)
Beginning balance at Dec. 31, 2017	184,461	$ 17,358	$ 153,810	$ 31,652	$ (17,235)	(1,124)
Balance, shares at Dec. 31, 2017		18,760	10,198,475
Net Income	6,989			6,989
Other comprehensive loss	(2,426)					(2,426)
Conversion of Series B preferred shares to common shares		$ (324)	$ 324
Conversion of Series B preferred shares to common shares, shares		(351)	44,799
Stock-based compensation	36		$ 36
Common stock dividends ($0.07 per share)	(714)			(714)
Preferred stock dividend	(303)			(303)
Ending balance at Mar. 31, 2018	$ 188,043	$ 17,034	$ 154,170	37,902	$ (17,235)	(3,828)
Balance, shares at Mar. 31, 2018		18,409	10,243,274
Change in accounting principle for adoption of ASU 2016-01				$ 278		$ (278)

Condensed Consolidated Stateme7

Condensed Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parenthetical)	3 Months Ended
	Mar. 31, 2018$ / shares
Retained Earnings [Member]
Common stock dividends per share	$ 0.07

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Cash Flows [Abstract]
Net cash from operating activities	$ 6,613	$ 8,999
Cash flows used for investing activities:
Maturities and calls of securities, available-for-sale	3,563	6,911
Purchases of securities, available-for-sale	(10,898)	(34,158)
Purchases of other securities		(17)
Net loan repayments (originations)	10,743	(19,344)
Proceeds from sale of other real estate owned properties	6	22
Proceeds from sale of premises and equipment	1	139
Premises and equipment purchases	(105)	(404)
Net cash provided (used) for investing activities	3,310	(46,851)
Cash flows from financing activities:
Repayment of long-term FHLB advances	(10,000)	(2,500)
Net change in short-term FHLB advances	(1,900)	(31,000)
Increase in deposits	85,748	190,350
Decrease in securities sold under repurchase agreements	(4,303)	(5,251)
Net proceeds from common stock issuance		32,829
Common dividends paid	(714)	(506)
Preferred dividends paid	(303)	(319)
Net cash provided by financing activities	68,528	183,603
Increase in cash and due from financial institutions	78,451	145,751
Cash and due from financial institutions at beginning of period	40,519	36,695
Cash and due from financial institutions at end of period	118,970	182,446
Cash paid during the period for:
Interest	1,462	879
Supplemental cash flow information:
Transfer of loans from portfolio to other real estate owned		78
Transfer of premises to held-for-sale		3
Transfer of loans held for sale to portfolio	85	419
Conversion of preferred shares to common shares	324	$ 1,242
Securities purchased not settled	$ 1,264

Consolidated Financial Statemen

Consolidated Financial Statements	3 Months Ended
	Mar. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Consolidated Financial Statements	(1) Consolidated Financial Statements Nature of Operations and Principles of Consolidation The Consolidated Financial Statements have been prepared by the Company without audit. In the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to present fairly the Company’s financial position as of March 31, 2018 and its results of operations and changes in cash flows for the periods ended March 31, 2018 and 2017 have been made. The accompanying Consolidated Financial Statements have been prepared in accordance with instructions of Form 10-Q, and therefore certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America have been omitted. The results of operations for the period ended March 31, 2018 are not necessarily indicative of the operating results for the full year. Reference is made to the accounting policies of the Company described in the notes to the audited financial statements contained in the Company’s 2017 annual report. The Company has consistently followed these policies in preparing this Form 10-Q. The Company provides financial services through its offices in the Ohio counties of Erie, Crawford, Champaign, Franklin, Logan, Madison, Summit, Huron, Ottawa, Richland, Montgomery and Cuyahoga. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are residential mortgage, commercial, and installment loans. Substantially all loans are secured by specific items of collateral including business assets, consumer assets and commercial and residential real estate. Commercial loans are expected to be repaid from cash flow from operations of businesses. Civista has two concentrations, one is to Lessors of Non-Residential Buildings and Dwellings totaling $297,281, or 25.8% of total loans, as of March 31, 2018 and the other is to Lessors of Residential Buildings and Dwellings totaling $154,491, or 13.4% of total loans, as of March 31, 2018. These segments of the portfolio are stable and have been conservatively underwritten, monitored and managed by experienced commercial bankers. However, the customers’ ability to repay their loans is dependent on the real estate market and general economic conditions in the area. Other financial instruments that potentially represent concentrations of credit risk include Federal Funds sold and deposit accounts in other financial institutions that are in excess of federally insured limits.

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	(2) Significant Accounting Policies Allowance for Loan Losses: The allowance for loan losses is regularly reviewed by management to determine that the amount is considered adequate to absorb probable losses in the loan portfolio. If not, an additional provision is made to increase the allowance. This evaluation includes specific loss estimates on certain individually reviewed impaired loans, the pooling of commercial credits risk graded as special mention and substandard that are not individually analyzed, and general loss estimates that are based upon the size, quality, and concentration characteristics of the various loan portfolios, adverse situations that may affect a borrower’s ability to repay, and current economic and industry conditions, among other items. Those judgments and assumptions that are most critical to the application of this accounting policy are assessing the initial and on-going credit-worthiness of the borrower, the amount and timing of future cash flows of the borrower that are available for repayment of the loan, the sufficiency of underlying collateral, the enforceability of third-party guarantees, the frequency and subjectivity of loan reviews and risk ratings, emerging or changing trends that might not be fully captured in the historical loss experience, and charges against the allowance for actual losses that are greater than previously estimated. These judgments and assumptions are dependent upon or can be influenced by a variety of factors, including the breadth and depth of experience of lending officers, credit administration and the corporate loan review staff that periodically review the status of the loan, changing economic and industry conditions, changes in the financial condition of the borrower and changes in the value and availability of the underlying collateral and guarantees. Pension Benefits: Use of Estimates Income Taxes Business Combinations: Reclassifications: Derivative Instruments and Hedging Activities Derivatives and Hedging Change in Accounting Principal: In January 2016, the FASB issued Accounting Standards Update (ASU) 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The adoption resulted in the Company recognizing a one-time cumulative effect adjustment of $278 on January 1, 2018 between accumulated other comprehensive loss and retained earnings on the consolidated balance sheet for the fair value of the equity securities included in accumulated other comprehensive loss as of the beginning of the period. The adjustment had no impact on net income for any prior periods presented. The Company has adopted this standard during the reporting period. On a prospective basis, the Company implemented changes to the measurement of the fair value of financial instruments using an exit price notion for disclosure purposes in Note 13 to the financial statements. The December 31, 2017, fair value of each class of financial instruments disclosure did not utilize the exit price notion when measuring fair value and, therefore, would not be comparable to the March 31, 2018 disclosure. The Company estimated the fair value based on guidance from ASC 820-10, Fair Value Measurements In March 2017, the FASB issued ASU No. 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” Adoption of New Accounting Standards: In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers.” “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” “Identifying Performance Obligations and Licensing,” “Narrow-Scope Improvements and Practical Expedients,” “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” Revenue Recognition In August 2016, the FASB issued ASU No. 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805), Clarifying the Definition of a Business In May 2017, the FASB issued ASU 2017-09, Compensation – Stock Compensation (Topic 718) The Company adopted ASU No. 2017-09 on January 1, 2018. ASU No. 2017-09 did not have a material impact on the Company’s Consolidated Financial Statements. Effect of Newly Issued but Not Yet Effective Accounting Standards: In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment In March 2017, the FASB issued ASU 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20). In July 2017, the FASB issued ASU 2017-11, Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), and Derivative and Hedging (Topic 815) Debt—Debt with Conversion and Other Options In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 850) In January 2018, the FASB issued ASU 2018-01, Leases (Topic 842) In February 2018, the FASB issued ASU 2018-03, Technical Corrections and Improvements to Financial Instruments—Overall (Subtopic 825-10) Fair Value Measurement Derivatives and Hedging—Embedded Derivatives Financial Instruments—Overall

Securities

Securities	3 Months Ended
	Mar. 31, 2018
Investments Debt And Equity Securities [Abstract]
Securities	(3) Securities The amortized cost and fair market value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive loss were as follows: March 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities and obligations of U.S. government agencies $ 29,989 $ 89 $ (281 ) $ 29,797 Obligations of states and political subdivisions 115,754 2,570 (661 ) 117,663 Mortgage-backed securities in government sponsored entities 87,832 279 (1,529 ) 86,582 Total debt securities $ 233,575 $ 2,938 $ (2,471 ) $ 234,042 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities and obligations of U.S. government agencies $ 30,450 $ 100 $ (192 ) $ 30,358 Obligations of states and political subdivisions 114,002 4,226 (172 ) 118,056 Mortgage-backed securities in government sponsored entities 82,098 408 (690 ) 81,816 Total debt securities $ 226,550 $ 4,734 $ (1,054 ) $ 230,230 The amortized cost and fair value of securities at March 31, 2018, by contractual maturity, is shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Securities not due at a single maturity date, primarily mortgage-backed securities and equity securities are shown separately. Available for sale Amortized Cost Fair Value Due in one year or less $ 13,831 $ 13,776 Due after one year through five years 22,569 22,474 Due after five years through ten years 31,666 32,835 Due after ten years 77,677 78,375 Mortgage-backed securities 87,832 86,582 Total securities available for sale $ 233,575 $ 234,042 No proceeds from sales of securities, gross realized gains and gross realized losses were recorded for the three months ended March 31, 2018 and 2017. Securities were pledged to secure public deposits, other deposits and liabilities as required by law. The carrying value of pledged securities was approximately $127,808 and $122,862 as of March 31, 2018 and December 31, 2017, respectively. Securities with unrealized losses at March 31, 2018 and December 31, 2017 not recognized in income are as follows: March 31, 2018 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ 17,342 $ (158 ) $ 9,438 $ (123 ) $ 26,780 $ (281 ) Obligations of states and political subdivisions 27,137 (410 ) 7,168 (251 ) 34,305 (661 ) Mortgage-backed securities in gov’t sponsored entities 50,236 (807 ) 20,926 (722 ) 71,162 (1,529 ) Total temporarily impaired $ 94,715 $ (1,375 ) $ 37,532 $ (1,096 ) $ 132,247 $ (2,471 ) December 31, 2017 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ 20,449 $ (100 ) $ 6,617 $ (92 ) $ 27,066 $ (192 ) Obligations of states and political subdivisions 4,057 (41 ) 7,309 (131 ) 11,366 (172 ) Mortgage-backed securities in gov’t sponsored entities 29,534 (195 ) 22,199 (495 ) 51,733 (690 ) Total temporarily impaired $ 54,040 $ (336 ) $ 36,125 $ (718 ) $ 90,165 $ (1,054 ) At March 31, 2018, there were one hundred twenty-two securities in the portfolio with unrealized losses mainly due to higher market rates when compared to the time of purchase. Unrealized losses on securities have not been recognized into income because the issuers’ securities are of high credit quality, management has the intent and ability to hold these securities for the foreseeable future, and the decline in fair value is largely due to market yields increasing. The fair value is expected to recover as the securities approach their maturity date or reset date. The Company does not intend to sell until recovery and does not believe selling will be required before recovery. The following table presents the net gains and losses on equity investments recognized in earnings at March 31, 2018, and the portion of unrealized gains and losses for the period that relates to equity investments held at March 31, 2018: Net gains (losses) recognized in equity securities during the period $ 40 Less: Net gains (losses) realized on the sale of equity securities during the period — Unrealized gains (losses) recognized in equity securities held at reporting date $ 40

Loans

Loans	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans	(4) Loans Loan balances were as follows: March 31, 2018 December 31, 2017 Commercial & Agriculture $ 137,076 $ 152,473 Commercial Real Estate- Owner Occupied 162,985 164,099 Commercial Real Estate- Non-Owner Occupied 436,160 425,623 Residential Real Estate 267,430 268,735 Real Estate Construction 95,856 97,531 Farm Real Estate 37,928 39,461 Consumer and Other 16,323 16,739 Total loans 1,153,758 1,164,661 Allowance for loan losses (12,814 ) (13,134 ) Net loans $ 1,140,944 $ 1,151,527 Included in total loans above are deferred loan fees of $148 at March 31, 2018 and $223 at December 31, 2017.

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2018
Text Block [Abstract]
Allowance for Loan Losses	(5) Allowance for Loan Losses Management has an established methodology to determine the adequacy of the allowance for loan losses that assesses the risks and losses inherent in the loan portfolio. For purposes of determining the allowance for loan and lease losses, the Company has segmented certain loans in the portfolio by product type. Loss migration rates for each risk category are calculated and used as the basis for calculating loan loss allowance allocations. Loss migration rates are calculated over a three-year period for all portfolio segments. Management also considers certain economic factors for trends that management uses to account for the qualitative and environmental changes in risk, which affects the level of the reserve. The following economic factors are analyzed: • Changes in lending policies and procedures • Changes in experience and depth of lending and management staff • Changes in quality of credit review system • Changes in nature and volume of the loan portfolio • Changes in past due, classified and nonaccrual loans and TDRs • Changes in economic and business conditions • Changes in competition or legal and regulatory requirements • Changes in concentrations within the loan portfolio • Changes in the underlying collateral for collateral dependent loans The total allowance reflects management’s estimate of loan losses inherent in the loan portfolio at the balance sheet date. The Company considers the allowance for loan losses of $12,814 adequate to cover loan losses inherent in the loan portfolio, at March 31, 2018. The following tables present, by portfolio segment, the changes in the allowance for loan losses for the three months ended March 31, 2018 and 2017. Allowance for loan losses: March 31, 2018 Beginning Charge-offs Recoveries Provision Ending Balance Commercial & Agriculture $ 1,562 $ (125 ) $ 19 $ (97 ) $ 1,359 Commercial Real Estate: Owner Occupied 2,043 (193 ) 9 171 2,030 Non-Owner Occupied 5,307 (44 ) 14 393 5,670 Residential Real Estate 1,910 (22 ) 58 (196 ) 1,750 Real Estate Construction 834 — — (14 ) 820 Farm Real Estate 430 — 1 (20 ) 411 Consumer and Other 290 (41 ) 4 (6 ) 247 Unallocated 758 — — (231 ) 527 Total $ 13,134 $ (425 ) $ 105 $ — $ 12,814 For the three months ended March 31, 2018, the allowance for Commercial & Agriculture loans was reduced by a decrease in general reserves as a result of lower outstanding balances and lower loss rates. The result was represented as a decrease in the provision. The allowance for Commercial Real Estate – Owner Occupied loans was reduced by a decrease in general reserves and charge-offs. The allowance for Commercial Real Estate – Non-Owner Occupied loans increased due to an increase in general reserves required for this type as a result of higher loan balances. The allowance for Residential Real Estate loans was reduced by a decrease in general reserves required for this type as a result of a decrease in outstanding loan balances and loss rates, represented by a decrease in the provision. The allowance for Real Estate Construction loans decreased due to lower outstanding loan balances for this type of loan. The result was represented as a decrease in the provision. The allowance for Farm Real Estate loans was reduced by a decrease in general reserves required for this type as a result of lower outstanding loan balances. The result was represented as a decrease in the provision. The allowance for Consumer and Other loans decreased due to a decrease in general reserves required for this type as a result of lower loss rates, lower outstanding balances and net charge-offs. The result was represented as a decrease in the provision. Management feels that the unallocated amount is appropriate and within the relevant range for the allowance that is reflective of the risk in the portfolio. Allowance for loan losses: March 31, 2017 Beginning balance Charge-offs Recoveries Provision Ending Balance Commercial & Agriculture $ 2,018 $ (1 ) $ 56 $ (504 ) $ 1,569 Commercial Real Estate: Owner Occupied 2,171 — 2 86 2,259 Non-Owner Occupied 4,606 — 5 (68 ) 4,543 Residential Real Estate 3,089 (89 ) 55 (33 ) 3,022 Real Estate Construction 420 — 5 (12 ) 413 Farm Real Estate 442 — — (35 ) 407 Consumer and Other 314 (41 ) 3 78 354 Unallocated 245 — — 488 733 Total $ 13,305 $ (131 ) $ 126 $ — $ 13,300 For the three months ended March 31, 2017, the allowance for Commercial & Agriculture loans was reduced by a decrease in general reserves as a result of lower loss rates, offset by an increase in the specific reserves required for this type. The result of these changes was represented as a decrease in the provision. The increase in the allowance for Commercial Real Estate – Owner Occupied was due to an increase in the specific reserves required for this type, but also to an increase in general reserves due to higher loan balances, offset by a decrease in loss rates. The allowance for Commercial Real Estate – Non-Owner Occupied loans was reduced by a decrease in loss rates required for this type. The result of these changes was represented as a decrease in the provision. The allowance for Residential Real Estate loans was reduced by a decrease in general reserves required for this type as a result of a decrease in loss rates, represented by a decrease in the provision. The allowance for Real Estate Construction loans decreased due to lower outstanding loan balances for this type of loan and recoveries, which was represented as a decrease in the provision. The allowance for Farm Real Estate loans was reduced by a decrease in general reserves required for this type as a result of lower outstanding loan balances and a decrease in classified loans for this type. The result of these changes was represented as a decrease in the provision. The allowance for Consumer and Other loans was increased by an increase in general reserves required for this type as a result of higher loss rates. Management feels that the unallocated amount is appropriate and within the relevant range for the allowance that is reflective of the risk in the portfolio. The following tables present, by portfolio segment, the allocation of the allowance for loan losses and related loan balances as of March 31, 2018 and December 31, 2017. March 31, 2018 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ — $ 60 $ 1,299 $ 1,359 Commercial Real Estate: Owner Occupied — 8 2,022 2,030 Non-Owner Occupied — — 5,670 5,670 Residential Real Estate 37 105 1,608 1,750 Real Estate Construction — — 820 820 Farm Real Estate — 6 405 411 Consumer and Other — — 247 247 Unallocated — — 527 527 Total $ 37 $ 179 $ 12,598 $ 12,814 Outstanding loan balances: Commercial & Agriculture $ 80 $ 1,025 $ 135,971 $ 137,076 Commercial Real Estate: Owner Occupied — 532 162,453 162,985 Non-Owner Occupied — 43 436,117 436,160 Residential Real Estate 119 1,335 265,976 267,430 Real Estate Construction — — 95,856 95,856 Farm Real Estate — 793 37,135 37,928 Consumer and Other — — 16,323 16,323 Total $ 199 $ 3,728 $ 1,149,831 $ 1,153,758 December 31, 2017 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ 82 $ 4 $ 1,476 $ 1,562 Commercial Real Estate: Owner Occupied — 6 2,037 2,043 Non-Owner Occupied — — 5,307 5,307 Residential Real Estate 44 109 1,757 1,910 Real Estate Construction — — 834 834 Farm Real Estate — 6 424 430 Consumer and Other — — 290 290 Unallocated — — 758 758 Total $ 126 $ 125 $ 12,883 $ 13,134 Outstanding loan balances: Commercial & Agriculture $ 87 $ 438 $ 151,948 $ 152,473 Commercial Real Estate: Owner Occupied — 1,010 163,089 164,099 Non-Owner Occupied — 44 425,579 425,623 Residential Real Estate 128 1,360 267,247 268,735 Real Estate Construction — — 97,531 97,531 Farm Real Estate — 608 38,853 39,461 Consumer and Other — — 16,739 16,739 Total $ 215 $ 3,460 $ 1,160,986 $ 1,164,661 The following tables present credit exposures by internally assigned grades as of March 31, 2018 and December 31, 2017. The risk rating analysis estimates the capability of the borrower to repay the contractual obligations of the loan agreements as scheduled or at all. The Company’s internal credit risk grading system is based on experiences with similarly graded loans. The Company’s internally assigned grades are as follows: • Pass • Special Mention • Substandard • Doubtful • Loss Generally, Residential Real Estate, Real Estate Construction and Consumer and Other loans are not risk-graded, except when collateral is used for a business purpose. March 31, 2018 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 131,082 $ 2,820 $ 3,174 $ — $ 137,076 Commercial Real Estate: Owner Occupied 155,400 1,273 6,312 — 162,985 Non-Owner Occupied 433,379 2,334 447 — 436,160 Residential Real Estate 61,428 1,884 5,628 — 68,940 Real Estate Construction 89,195 1,276 27 — 90,498 Farm Real Estate 29,034 6,094 2,800 — 37,928 Consumer and Other 1,434 — 67 — 1,501 Total $ 900,952 $ 15,681 $ 18,455 $ — $ 935,088 December 31, 2017 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 140,842 $ 8,412 $ 3,219 $ — $ 152,473 Commercial Real Estate: Owner Occupied 155,756 1,166 7,177 — 164,099 Non-Owner Occupied 422,363 2,321 939 — 425,623 Residential Real Estate 62,628 1,997 5,873 — 70,498 Real Estate Construction 91,545 15 27 — 91,587 Farm Real Estate 25,228 11,236 2,997 — 39,461 Consumer and Other 1,312 — 70 — 1,382 Total $ 899,674 $ 25,147 $ 20,302 $ — $ 945,123 The following tables present performing and nonperforming loans based solely on payment activity for the periods ended March 31, 2018 and December 31, 2017 that have not been assigned an internal risk grade. The types of loans presented here are not assigned a risk grade unless there is evidence of a problem. Payment activity is reviewed by management on a monthly basis to evaluate performance. Loans are considered to be nonperforming when they become 90 days past due or if management thinks that we may not collect all of our principal and interest. Nonperforming loans also include certain loans that have been modified in Troubled Debt Restructurings (TDRs) where economic concessions have been granted to borrowers who have experienced or are expected to experience financial difficulties. These concessions typically result from the Company’s loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions due to economic status. Certain TDRs are classified as nonperforming at the time of restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months. March 31, 2018 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 198,490 $ 5,358 $ 14,802 $ 218,650 Nonperforming — — 20 20 Total $ 198,490 $ 5,358 $ 14,822 $ 218,670 December 31, 2017 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 198,237 $ 5,944 $ 15,341 $ 219,522 Nonperforming — — 16 16 Total $ 198,237 $ 5,944 $ 15,357 $ 219,538 The following tables include an aging analysis of the recorded investment of past due loans outstanding as of March 31, 2018 and December 31, 2017. March 31, 2018 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 188 $ 41 $ 808 $ 1,037 $ 135,959 $ 80 $ 137,076 $ — Commercial Real Estate: Owner Occupied 320 44 390 754 162,231 — 162,985 — Non-Owner Occupied — 49 167 216 435,944 — 436,160 — Residential Real Estate 1,643 64 554 2,261 265,050 119 267,430 — Real Estate Construction — — 27 27 95,829 — 95,856 — Farm Real Estate 152 — 186 338 37,590 — 37,928 — Consumer and Other 64 76 20 160 16,163 — 16,323 20 Total $ 2,367 $ 274 $ 2,152 $ 4,793 $ 1,148,766 $ 199 $ 1,153,758 $ 20 December 31, 2017 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 575 $ 2 $ 685 $ 1,262 $ 151,124 $ 87 $ 152,473 $ — Commercial Real Estate: Owner Occupied 897 104 484 1,485 162,614 — 164,099 — Non-Owner Occupied 133 — 470 603 425,020 — 425,623 — Residential Real Estate 1,613 229 785 2,627 265,980 128 268,735 — Real Estate Construction — — 27 27 97,504 — 97,531 — Farm Real Estate 27 — 186 213 39,248 — 39,461 — Consumer and Other 92 96 16 204 16,535 — 16,739 16 Total $ 3,337 $ 431 $ 2,653 $ 6,421 $ 1,158,025 $ 215 $ 1,164,661 $ 16 The following table presents loans on nonaccrual status, excluding purchased credit-impaired (PCI) loans, as of March 31, 2018 and December 31, 2017. March 31, 2018 December 31, 2017 Commercial & Agriculture $ 1,004 $ 887 Commercial Real Estate: Owner Occupied 806 1,476 Non-Owner Occupied 268 711 Residential Real Estate 2,589 2,778 Real Estate Construction 27 27 Farm Real Estate 186 186 Consumer and Other 64 67 Total $ 4,944 $ 6,132 Nonaccrual Loans: Modifications: Loans modified in a TDR are typically already on non-accrual status and partial charge-offs have in some cases already been taken against the outstanding loan balance. As a result, loans modified in a TDR may have the financial effect of increasing the specific allowance associated with the loan. An allowance for impaired loans that have been modified in a TDR are measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral, less any selling costs, if the loan is collateral dependent. Management exercises significant judgment in developing these estimates. As of March 31, 2018, TDRs accounted for $216 of the allowance for loan losses. As of December 31, 2017, TDRs accounted for $169 of the allowance for loan losses. Loan modifications that are considered TDRs completed during the three-month period ended March 31, 2018 were as follows. There were no loans modified in trouble debt restructuring during the three-month period ended March 31, 2017: For the Three-Month Period Ended March 31, 2018 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Commercial & Agriculture 3 $ 591 $ 591 Commercial Real Estate—Owner Occupied — — — Commercial Real Estate—Non-Owner Occupied — — — Residential Real Estate — — — Real Estate Construction — — — Farm Real Estate — — — Consumer and Other — — — Total Loan Modifications 3 $ 591 $ 591 Recidivism, or the borrower defaulting on its obligation pursuant to a modified loan, results in the loan once again becoming a non-accrual loan. Recidivism occurs at a notably higher rate than do defaults on new origination loans, so modified loans present a higher risk of loss than do new origination loans. During the three-month periods ended March 31, 2018 and March 31, 2017, there were no defaults on loans that were modified and considered TDRs during the respective twelve previous months. Impaired Loans: The following table includes the recorded investment and unpaid principal balances for impaired financing receivables, excluding PCI loans, with the associated allowance amount, if applicable, as of March 31, 2018 and December 31, 2017. March 31, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Commercial & Agriculture $ 760 $ 760 $ — $ — Commercial Real Estate: Owner Occupied 218 218 693 913 Non-Owner Occupied 43 47 44 48 Residential Real Estate 957 1,030 977 1,049 Farm Real Estate 333 333 148 148 Consumer and Other — — — — Total 2,311 2,388 1,862 2,158 With an allowance recorded: Commercial & Agriculture 265 365 $ 60 438 438 $ 4 Commercial Real Estate: Owner Occupied 314 314 8 317 317 6 Non-Owner Occupied — — — — — — Residential Real Estate 378 381 105 383 387 109 Farm Real Estate 460 460 6 460 460 6 Total 1,417 1,520 179 1,598 1,602 125 Total: Commercial & Agriculture 1,025 1,125 60 438 438 4 Commercial Real Estate: Owner Occupied 532 532 8 1,010 1,230 6 Non-Owner Occupied 43 47 — 44 48 — Residential Real Estate 1,335 1,411 105 1,360 1,436 109 Farm Real Estate 793 793 6 608 608 6 Consumer and Other — — — — — — Total $ 3,728 $ 3,908 $ 179 $ 3,460 $ 3,760 $ 125 The following table includes the average recorded investment and interest income recognized for impaired financing receivables for the three-month periods ended March 31, 2018 and 2017. March 31, 2018 March 31, 2017 For the three months ended: Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Commercial & Agriculture $ 732 $ 7 $ 1,852 $ 6 Commercial Real Estate—Owner Occupied 771 9 1,886 22 Commercial Real Estate—Non-Owner Occupied 43 1 358 — Residential Real Estate 1,348 17 1,671 16 Real Estate Construction — — — — Farm Real Estate 701 7 614 6 Consumer and Other — — 1 — Total $ 3,595 $ 41 $ 6,382 $ 50 Changes in the amortizable yield for PCI loans were as follows, since acquisition: For the Three-Month Period Ended March 31, 2018 For the Three-Month Period Ended March 31, 2017 (In Thousands) (In Thousands) Balance at beginning of period $ 15 $ 49 Acquisition of PCI loans — — Accretion (7 ) (9 ) Balance at end of period $ 8 $ 40 The following table presents additional information regarding loans acquired and accounted for in accordance with ASC 310-30: At March 31, 2018 At December 31, 2017 Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) (In Thousands) Outstanding balance $ 752 $ 775 Carrying amount 199 215 There has been $37 and $126 in allowance for loan losses recorded for acquired loans with or without specific evidence of deterioration in credit quality as of March 31, 2018 and December 31, 2017, respectively. Foreclosed Assets Held For Sale Foreclosed assets acquired in settlement of loans are carried at fair value less estimated costs to sell and are included in other assets on the Consolidated Balance Sheet. As of March 31, 2018 and December 31, 2017, a total of $11 and $16, respectively of foreclosed assets were included with other assets. As of March 31, 2018, included within the foreclosed assets is $11 of consumer residential mortgages that were foreclosed on or received via a deed in lieu transaction prior to the period end. As of March 31, 2018 and December 31, 2017, the Company had initiated formal foreclosure procedures on $454 and $239, respectively, of consumer residential mortgages.

Other Comprehensive Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Other Comprehensive Income	(6) Other Comprehensive Income The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax. For the Three-Month Period Ended For the Three-Month Period Ended March 31, 2018(a) March 31, 2017(a) Unrealized Gains and Losses on Available-for- Sale Securities Defined Benefit Pension Items Total Unrealized Gains and Losses on Available-for- Sale Securities Defined Benefit Pension Items Total Beginning balance $ 3,185 $ (4,309 ) $ (1,124 ) $ 2,008 $ (4,345 ) $ (2,337 ) Other comprehensive income before reclassifications (2,539 ) — (2,539 ) 299 — 299 Amounts reclassified from accumulated other comprehensive loss — 113 113 — 62 62 Net current-period other comprehensive income (2,539 ) 113 (2,426 ) 299 62 361 Reclassification of equity securities from accumulated other comprehensive loss (278 ) — (278 ) — — — Ending balance $ 368 $ (4,196 ) $ (3,828 ) $ 2,307 $ (4,283 ) $ (1,976 ) (a) Amounts in parentheses indicate debits on the consolidated balance sheets. The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss). Amount Reclassified from Accumulated Other Comprehensive Income (Loss) (a) Details about Accumulated Other Comprehensive (Loss) Components For the three months ended March 31, 2018 For the three months ended March 31, 2017 Affected Line Item in the Statement Where Net Income is Presented Amortization of defined benefit pension items Actuarial gains/(losses) (b) (143 ) (94 ) Other operating expenses Tax effect 30 32 Income tax expense (113 ) (62 ) Net of tax Total reclassifications for the period $ (113 ) $ (62 ) Net of tax (a) Amounts in parentheses indicate expenses/losses and other amounts indicate income/benefit. (b) These accumulated other comprehensive income components are included in the computation of net periodic pension cost.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	(7) Goodwill and Intangible Assets There has been no change in the carrying amount of goodwill of $27,095 for the periods ended March 31, 2018 and December 31, 2017. Management performs an evaluation of goodwill for impairment annually, or more frequently if events or changes in circumstances indicate that the asset might be impaired. Management last performed an evaluation of the Company’s goodwill during the fourth quarter of 2017 and concluded that the Company’s goodwill was not impaired at December 31, 2017. Acquired intangible assets, other than goodwill, as of March 31, 2018 and December 31, 2017 were as follows: 2018 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortized intangible assets(1): MSRs $ 1,094 $ 338 $ 756 $ 1,065 $ 322 $ 743 Core deposit intangibles 7,274 6,771 503 7,274 6,738 536 Total amortized intangible assets $ 8,368 $ 7,109 $ 1,259 $ 8,339 $ 7,060 $ 1,279 (1) Excludes fully amortized intangible assets Aggregate core deposit intangible amortization expense was $33 and $167 for the three-months ended March 31, 2018 and 2017, respectively. Aggregate mortgage servicing rights amortization was $16 and $11 for the three-months ended March 31, 2018 and 2017, respectively. Estimated amortization expense for each of the next five years and thereafter is as follows: MSRs Core deposit intangibles Total 2018 $ 31 $ 78 $ 109 2019 42 88 130 2020 42 72 114 2021 42 68 110 2022 41 68 109 Thereafter 558 129 687 $ 756 $ 503 $ 1,259

Short-Term Borrowings

Short-Term Borrowings	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Short-Term Borrowings	(8) Short-Term Borrowings Short-term borrowings, which consist of federal funds purchased and other short-term borrowings are included in Federal Home Loan Bank advances on the Consolidated Balance Sheets and are summarized as follows: At March 31, 2018 At December 31, 2017 Federal Funds Purchased Short-term Borrowings Federal Funds Purchased Short-term Borrowings Outstanding balance $ — $ 55,000 $ — $ 56,900 Maximum indebtedness — 78,400 20,000 115,050 Average balance — 29,717 119 38,825 Average rate paid — 1.47 % 1.68 % 1.12 % Interest rate on balance — 1.72 % — 1.42 % Average balance during the period represents daily averages. Average rate paid represents interest expense divided by the related average balances. These borrowing transactions can range from overnight to six months in maturity. The average maturity was one day at March 31, 2018 and December 31, 2017. Securities sold under agreements to repurchase are used to facilitate the needs of our customers as well as to facilitate our short-term funding needs. Securities sold under repurchase agreements are carried at the amount of cash received in association with the agreement. We continuously monitor the collateral levels and may be required, from time to time, to provide additional collateral based on the fair value of the underlying securities. Securities pledged as collateral under repurchase agreements are maintained with our safekeeping agents. The following table presents detail regarding the securities pledged as collateral under repurchase agreements as of March 31, 2018 and December 31, 2017. All of the repurchase agreements are overnight agreements. March 31, 2018 December 31, 2017 Securities pledged for repurchase agreements: U.S. Treasury securities $ 778 $ 874 Obligations of U.S. government agencies 16,674 20,881 Total securities pledged $ 17,452 $ 21,755 Gross amount of recognized liabilities for repurchase agreements $ 17,452 $ 21,755 Amounts related to agreements not included in offsetting disclosures above $ — $ —

Earnings per Common Share

Earnings per Common Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings per Common Share	(9) Earnings per Common Share Basic earnings per common share are computed as net income available to common shareholders divided by the weighted average number of common shares outstanding during the period. Diluted earnings per common share include the dilutive effect, if any, of additional potential common shares issuable under the equity incentive plan, computed using the treasury stock method, and the impact of the Company’s convertible preferred stock using the “if converted” method. Three Months Ended March 31, 2018 2017 Basic Net income $ 6,989 $ 4,635 Preferred stock dividends 303 319 Net income available to common shareholders—basic $ 6,686 $ 4,316 Weighted average common shares outstanding—basic 10,213,264 9,100,330 Basic earnings per common share $ 0.65 $ 0.47 Diluted Net income available to common shareholders—basic $ 6,686 $ 4,316 Preferred stock dividends 303 319 Net income available to common shareholders—diluted $ 6,989 $ 4,635 Weighted average common shares outstanding for basic earnings per common share 10,213,264 9,100,330 Add: Dilutive effects of convertible preferred shares 2,384,130 2,508,003 Average shares and dilutive potential common shares outstanding—diluted 12,597,394 11,608,333 Diluted earnings per common share $ 0.55 $ 0.40 For the quarters ended March 31, 2018 and March 31, 2017, there were 2,384,130 and 2,508,003, respectively, of average dilutive shares related to the Company’s convertible preferred stock. Under the “if converted” method, all convertible preferred shares are assumed to be converted into common shares at the corresponding conversion rate. These additional shares are then added to the common shares outstanding to calculate diluted earnings per share.

Commitments, Contingencies and

Commitments, Contingencies and Off-Balance Sheet Risk	3 Months Ended
	Mar. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments, Contingencies and Off-Balance Sheet Risk	(10) Commitments, Contingencies and Off-Balance Sheet Risk Some financial instruments, such as loan commitments, credit lines, letters of credit and overdraft protection, are issued to meet customers’ financing needs. These are agreements to provide credit or to support the credit of others, as long as the conditions established in the contract are met, and usually have expiration dates. Commitments may expire without being used. Off-balance-sheet risk of credit loss exists up to the face amount of these instruments, although material losses are not anticipated. The same credit policies are used to make such commitments as are used for loans, including obtaining collateral at exercise of commitment. The contractual amounts of financial instruments with off-balance-sheet risk were as follows for March 31, 2018 and December 31, 2017: Contract Amount March 31, 2018 December 31, 2017 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitment to extend credit: Lines of credit and construction loans $ 8,339 $ 292,221 $ 4,982 $ 286,925 Overdraft protection 2 33,007 7 33,353 Letters of credit 624 2,627 624 2,637 $ 8,965 $ 327,855 $ 5,613 $ 322,915 Commitments to make loans are generally made for a period of one year or less. Fixed rate loan commitments included in the table above had interest rates ranging from 2.88% to 8.50% at March 31, 2018 and from 2.88% to 10.25% at December 31, 2017. Maturities extend up to 30 years. Civista is required to maintain certain reserve balances on hand in accordance with the Federal Reserve Board requirements. The average reserve balance maintained in accordance with such requirements was $55,399 on March 31, 2018 and $4,112 on December 31, 2017.

Pension Information

Pension Information	3 Months Ended
	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Pension Information	(11) Pension Information The Company sponsors a pension plan which is a noncontributory defined benefit retirement plan. Annual payments, subject to the maximum amount deductible for federal income tax purposes, are made to a pension trust fund. In 2006, the Company amended the pension plan to provide that no employee could be added as a participant to the pension plan after December 31, 2006. In 2014, the Company amended the pension plan again to provide that no additional benefits would accrue beyond April 30, 2014. Net periodic pension benefit was as follows: Three months ended March 31, 2018 2017 Service cost $ — $ — Interest cost 125 167 Expected return on plan assets (273 ) (278 ) Other components 143 94 Net periodic pension benefit $ (5 ) $ (17 ) The Company does not expect to make any contribution to its pension plan in 2018. The Company contributed $2,000 in 2017.

Equity Incentive Plan

Equity Incentive Plan	3 Months Ended
	Mar. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Equity Incentive Plan	(12) Equity Incentive Plan At the Company’s 2014 annual meeting, the shareholders adopted the Company’s 2014 Incentive Plan (“2014 Incentive Plan”). The 2014 Incentive Plan authorizes the Company to grant options, stock awards, stock units and other awards for up to 375,000 common shares of the Company. There were 292,209 shares available for future grants under this plan at March 31, 2018. During each of the last three years, the Board of Directors has awarded restricted common shares to senior officers of the Company. The restricted shares vest ratably over a three-year period following the grant date. The product of the number of restricted shares granted and the grant date market price of the Company’s common shares determines the fair value of restricted shares under the Company’s 2014 Incentive Plan. Management recognizes compensation expense for the fair value of restricted shares on a straight-line basis over the requisite service period for the entire award. On May 16, 2017, directors of the Company’s banking subsidiary, Civista, were paid a retainer in the form of non-restricted common shares of the Company. The aggregate of 6,804 common shares were issued to Civista directors as payment of their retainer for their service on the Civista Board of Directors covering the period up to the 2018 Annual Meeting. This issuance was expensed in its entirety when the shares were issued in the amount of $144. Finally, on September 11, 2017, a newly appointed director of the Company’s banking subsidiary, Civista, was paid a retainer in the form of non-restricted common shares of the Company. The aggregate of 367 common shares was issued as payment of her retainer for her service on the Civista Board of Directors covering the period up to the 2018 Annual Meeting. This issuance was expensed in its entirety when the shares were issued in the amount of $8. No options had been granted under the 2014 Incentive Plan as of March 31, 2018 and 2017. The Company classifies share-based compensation for employees with “Compensation expense” in the Consolidated Statements of Operations. The following is a summary of the status of the Company’s restricted shares and changes therein for the three-month period ended March 31, 2018: Three months ended March 31, 2018 Number of Restricted Shares Weighted Average Grant Date Fair Value Nonvested at beginning of period 42,138 $ 15.60 Granted — — Vested (17,956 ) 14.01 Forfeited — — Nonvested at end of period 24,182 $ 16.78 The following is a summary of the status of the Company’s awarded restricted shares as of March 31, 2018: At March 31, 2018 Date of Award Shares Remaining Expense Remaining Vesting Period (Years) January 15, 2016 6,160 $ 60 2.75 March 11, 2016 5,256 25 0.75 March 20, 2017 7,814 95 1.75 March 20, 2017 4,952 100 3.75 24,182 $ 280 2.20 During the three months ended March 31, 2018, the Company recorded $36 of share-based compensation expense for shares granted under the 2014 Incentive Plan. At March 31, 2018, the total compensation cost related to unvested awards not yet recognized is $280, which is expected to be recognized over the weighted average remaining life of the grants of 2.20 years.

Fair Value Measurement

Fair Value Measurement	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurement	(13) Fair Value Measurement The Company uses a fair value hierarchy to measure fair value. This hierarchy describes three levels of inputs that may be used to measure fair value. Level 1: Quoted prices for identical assets in active markets that are identifiable on the measurement date; Level 2: Significant other observable inputs, such as quoted prices for similar assets, quoted prices in markets that are not active and other inputs that are observable or can be corroborated by observable market data; Level 3: Significant unobservable inputs that reflect the Company’s own view about the assumptions that market participants would use in pricing an asset. Debt securities: Equity securities: The fair value of the swap asset/liability: Impaired loans: Other real estate owned: Assets and liabilities measured at fair value are summarized in the table below. Fair Value Measurements at March 31, 2018 Using: Assets: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 29,797 $ — Obligations of states and political subdivisions — 117,663 — Mortgage-backed securities in government sponsored entities — 86,582 — Total securities available for sale — 234,042 — Equity securities in financial institutions — 873 — Swap asset — 2,065 — Liabilities measured at fair value on a recurring basis: Swap liability — 2,065 — Assets measured at fair value on a nonrecurring basis: Impaired loans $ — $ — $ 1,345 Other real estate owned — — 11 Fair Value Measurements at December 31, 2017 Using: Assets: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 30,358 $ — Obligations of states and political subdivisions — 118,056 — Mortgage-backed securities in government sponsored entities — 81,816 — Total securities available for sale — 230,230 — Equity securities in financial institutions — 832 — Swap asset — 1,560 — Liabilities measured at fair value on a recurring basis: Swap liability — 1,560 — Assets measured at fair value on a nonrecurring basis: Impaired loans $ — $ — $ 1,040 Other real estate owned — — 16 The following table presents quantitative information about the Level 3 significant unobservable inputs for assets and liabilities measured at fair value on a nonrecurring basis at March 31, 2018. Quantitative Information about Level 3 Fair Value Measurements March 31, 2018 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1,345 Appraisal of collateral Appraisal adjustments 10% - 38% 31% Liquidation expense 0% - 10% 3% Holding period 0 - 30 months 20 months Other real estate owned $ 11 Appraisal of collateral Appraisal adjustments 10% - 30% 10% Liquidation expense 0% - 10% 10% The following table presents quantitative information about the Level 3 significant unobservable inputs for assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2017. Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1,040 Appraisal of collateral Appraisal adjustments 0% - 30% 16% Liquidation expense 0% - 10% 8% Holding period 0 - 30 months 20 months Other real estate owned $ 16 Appraisal of collateral Appraisal adjustments 10% - 30% 10% Liquidation expense 0% - 10% 10% The methods of determining the fair value of assets and liabilities presented in the note are consistent with our methodologies disclosed in the Company’s 2017 Form 10-K, except for the valuation of loans held for investment which was impacted by the adoption of ASU 2016-01. In accordance with ASU 2016-01, the fair value of loans held for investment, excluding impaired loans measured at fair value on a non-recurring basis, is estimated using discounted cash flow analyses. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, credit and nonperformance risk of the loans. Loans are considered a Level 3 classification. The carrying amount and fair values of financial instruments not measured at fair value on a recurring or nonrecurring basis at March 31, 2018 are as follows: March 31, 2018 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 118,970 $ 118,970 $ 118,970 $ — $ — Other securities 14,247 14,247 14,247 — — Loans, held for sale 2,379 2,379 2,379 — — Loans 1,140,944 1,128,603 — — 1,128,603 Bank owned life insurance 25,267 25,267 25,267 — — Accrued interest receivable 4,842 4,842 4,842 — — Financial Liabilities: Nonmaturing deposits 1,149,514 1,149,173 1,149,173 — — Time deposits 141,157 141,119 — — 141,119 Short-term FHLB advances 55,000 55,000 55,000 — — Long-term FHLB advances 5,000 4,962 — — 4,962 Securities sold under agreement to repurchase 17,452 17,452 17,452 — — Subordinated debentures 29,427 32,031 — — 32,031 Accrued interest payable 100 100 100 — — The carrying amount and fair values of financial instruments not measured at fair value on a recurring or nonrecurring basis at December 31, 2017 are as follows: December 31, 2017 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 40,519 $ 40,519 $ 40,519 $ — $ — Loans, held for sale 2,197 2,197 2,197 — — Loans 1,151,527 1,146,969 — — 1,146,969 Other securities 14,247 14,247 14,247 — — Bank owned life insurance 25,125 25,125 25,125 — — Accrued interest receivable 4,488 4,488 4,488 — — Financial Liabilities: Nonmaturing deposits 981,021 981,021 981,021 — — Time deposits 223,902 223,626 — — 223,626 Short-term FHLB advances 56,900 56,900 56,900 — — Long-term FHLB advances 15,000 14,964 — — 14,964 Securities sold under agreement to repurchase 21,755 21,755 21,755 — — Subordinated debentures 29,427 31,052 — — 31,052 Accrued interest payable 410 410 410 — — Cash and due from financial institutions: Other securities: Loans, held-for-sale: Loans, net of allowance for loan losses: Bank owned life insurance: Accrued interest receivable and payable and securities sold under agreements to repurchase: Deposits: The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the market rates currently offered for deposits of similar remaining maturities. The deposits’ fair value estimates do not include the benefit that results from the low-cost funding provided by the deposit liabilities compared to the cost of borrowing funds in the market, commonly referred to as the core deposit intangible. Federal Home Loan Bank (“FHLB”) advances: Subordinated debentures: Fair value swap asset and liability:

Derivative Hedging Instruments

Derivative Hedging Instruments	3 Months Ended
	Mar. 31, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Hedging Instruments	(14) Derivative Hedging Instruments To accommodate customer need and to support the Company’s asset/liability positioning, on occasion we enter into interest rate swaps with a customer and a bank counterparty. The Company enters into a floating rate loan and a fixed rate swap with our customer. Simultaneously, the Company enters into an offsetting fixed rate swap with a bank counterparty. In connection with each swap transaction, the Company agrees to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on the same notional amount at a fixed interest rate. At the same time, the Company agrees to pay a bank counterparty the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. These transactions allow the Company’s customer to effectively convert variable rate loans to fixed rate loans. Since the Company acts as an intermediary for its customer, changes in the fair value of the underlying derivative contracts offset each other and do not significantly impact the Company’s results of operations. The following table summarizes the Company’s interest rate swap positions and the impact of a 1 basis point change in interest rates as of March 31, 2018. Notional Amount Weighted Average Rate Received/(Paid) Impact of a 1 basis point change in interest rates Repricing Frequency Derivative Assets $ 80,468 5.18 % $ 44 Monthly Derivative Liabilities (80,468 ) -5.18 % (44 ) Monthly Net Exposure $ — $ — The following table summarizes the Company’s interest rate swap positions and the impact of a 1 basis point change in interest rates as of December 31, 2017. Notional Amount Weighted Average Rate Received/(Paid) Impact of a 1 basis point change in interest rates Repricing Frequency Derivative Assets $ 66,227 5.08 % $ 36 Monthly Derivative Liabilities (66,227 ) -5.08 % (36 ) Monthly Net Exposure $ — $ — The Company monitors and controls all derivative products with a comprehensive Board of Director approved commercial loan swap policy. All hedge transactions must be approved in advance by the Lenders Loan Committee or the Directors Loan Committee of the Board of Directors.

Qualified Affordable Housing Pr

Qualified Affordable Housing Project Investments	3 Months Ended
	Mar. 31, 2018
Federal Home Loan Banks [Abstract]
Qualified Affordable Housing Project Investments	(15) Qualified Affordable Housing Project Investments The Company invests in certain qualified affordable housing projects. At March 31, 2018 and December 31, 2017, the balance of the investment for qualified affordable housing projects was $3,630 and $3,204, respectively. These balances are reflected in the other assets line on the Consolidated Balance Sheet. The unfunded commitments related to the investments in qualified affordable housing projects totaled $3,955 and $4,510 at March 31, 2018 and December 31, 2017, respectively. During the three months ended March 31, 2018 and 2017, the Company recognized amortization expense with respect to its investments in qualified affordable housing projects of $129 and $82, offset by tax credits and other benefits from its investment in affordable housing tax credits of $219 and $138, respectively. During the three months ended March 31, 2018 and 2017, the Company did not incur impairment losses related to its investment in qualified affordable housing projects.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2018
Revenue From Contract With Customer [Abstract]
Revenue Recognition	(16) Revenue Recognition On January 1, 2018, the Company adopted ASU No. 2014-09 “Revenue from Contracts with Customers” (Topic 606) Significant Accounting Policies Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. Topic 606 is applicable to noninterest revenue streams such as trust and asset management income, deposit related fees, interchange fees, merchant income, and annuity and insurance commissions. However, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest revenue streams in-scope of Topic 606 are discussed below. Service Charges Service charges consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, and other deposit account related fees. The Company’s performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Other deposit account related fees are largely transactional based, and therefore, the Company’s performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. ATM/Interchange Fees Fees, exchange, and other service charges are primarily comprised of debit and credit card income, ATM fees and other service charges. Debit and credit card income is primarily comprised of interchange fees earned whenever the Company’s debit and credit cards are processed through card payment networks such as Mastercard. ATM fees are primarily generated when a Company cardholder uses a non-Company ATM or a non-Company cardholder uses a Company ATM. The Company’s performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Wealth Management Fees Wealth management fees are primarily comprised of fees earned from the management and administration of trusts and other customer assets. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received in the following month through a direct charge to customers’ accounts. The Company does not earn performance-based incentives. The Company’s performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered. Tax Refund Processing Fees The Company facilitates the payment of federal and state income tax refunds in partnership with a third-party vendor. Refund Transfers (“RTs”) are fee-based products whereby a tax refund is issued to the taxpayer after the Company has received the refund from the federal or state government. As part of this agreement the Company earns fee income, the majority of which is received in the first quarter of the year. The Company’s fee income revenue is recognized based on the estimated percent of business completed by each date. Other Other noninterest income consists of other recurring revenue streams such as check order fees, wire transfer fees, safety deposit box rental fees, item processing fees and other miscellaneous revenue streams. Check order income mainly represents fees charged to customers for checks. Wire transfer fees represent revenue from processing wire transfers. Safe deposit box rental fees are charged to the customer on an annual basis and recognized upon receipt of payment. The Company determined that since rentals and renewals occur fairly consistently over time, revenue is recognized on a basis consistent with the duration of the performance obligation. Item processing fee income represents fees charged to other financial institutions for processing their transactions. Payment is typically received in the following month. The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three months ended March 31, 2018 and 2017. Three Months Ended March 31, 2018 2017 Noninterest Income In-scope of Topic 606: Service charges $ 1,134 $ 1,045 ATM/Interchange fees 554 510 Wealth management fees 852 707 Tax refund processing fees 2,200 2,200 Other 220 194 Noninterest Income (in-scope of Topic 606) 4,960 4,656 Noninterest Income (out-of-scope of Topic 606) 656 482 Total Noninterest Income $ 5,616 $ 5,138 Contract Balances A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of March 31, 2018 and December 31, 2017, the Company did not have any significant contract balances. Contract Acquisition Costs In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, the Company did not capitalize any contract acquisition cost.

Merger

Merger	3 Months Ended
	Mar. 31, 2018
Business Combinations [Abstract]
Merger	(17) Merger On March 11, 2018, CBI and United Community Bancorp (“UCB”), and United Community Bank entered into an Agreement and Plan of Merger (the “Merger Agreement”), pursuant to which CBI will acquire UCB and its wholly-owned subsidiary, United Community Bank (“United Community”). It is anticipated that United Community will be merged with and into Civista, upon completion of the transaction. At that time, United Community’s eight banking offices located in Southeastern Indiana, and its Loan Production office in Northern Kentucky, will become offices of Civista. total assets of $546 million, total loans of $296 million and total deposits of $462 million. Under the terms of the Merger Agreement, for each share of UCB common stock issued and outstanding, The merger is anticipated to be completed during the third quarter of 2018, and is subject to the satisfaction of the closing conditions in the Merger Agreement and the approval of the appropriate regulatory authorities and of the shareholders of UCB.

Significant Accounting Polici26

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses: The allowance for loan losses is regularly reviewed by management to determine that the amount is considered adequate to absorb probable losses in the loan portfolio. If not, an additional provision is made to increase the allowance. This evaluation includes specific loss estimates on certain individually reviewed impaired loans, the pooling of commercial credits risk graded as special mention and substandard that are not individually analyzed, and general loss estimates that are based upon the size, quality, and concentration characteristics of the various loan portfolios, adverse situations that may affect a borrower’s ability to repay, and current economic and industry conditions, among other items. Those judgments and assumptions that are most critical to the application of this accounting policy are assessing the initial and on-going credit-worthiness of the borrower, the amount and timing of future cash flows of the borrower that are available for repayment of the loan, the sufficiency of underlying collateral, the enforceability of third-party guarantees, the frequency and subjectivity of loan reviews and risk ratings, emerging or changing trends that might not be fully captured in the historical loss experience, and charges against the allowance for actual losses that are greater than previously estimated. These judgments and assumptions are dependent upon or can be influenced by a variety of factors, including the breadth and depth of experience of lending officers, credit administration and the corporate loan review staff that periodically review the status of the loan, changing economic and industry conditions, changes in the financial condition of the borrower and changes in the value and availability of the underlying collateral and guarantees.
Pension Benefits	Pension Benefits:
Use of Estimates	Use of Estimates
Income Taxes	Income Taxes
Business Combinations	Business Combinations:
Reclassifications	Reclassifications:
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities Derivatives and Hedging
Change in Accounting Principal	Change in Accounting Principal: In January 2016, the FASB issued Accounting Standards Update (ASU) 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The adoption resulted in the Company recognizing a one-time cumulative effect adjustment of $278 on January 1, 2018 between accumulated other comprehensive loss and retained earnings on the consolidated balance sheet for the fair value of the equity securities included in accumulated other comprehensive loss as of the beginning of the period. The adjustment had no impact on net income for any prior periods presented. The Company has adopted this standard during the reporting period. On a prospective basis, the Company implemented changes to the measurement of the fair value of financial instruments using an exit price notion for disclosure purposes in Note 13 to the financial statements. The December 31, 2017, fair value of each class of financial instruments disclosure did not utilize the exit price notion when measuring fair value and, therefore, would not be comparable to the March 31, 2018 disclosure. The Company estimated the fair value based on guidance from ASC 820-10, Fair Value Measurements In March 2017, the FASB issued ASU No. 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.”
Adoption of New Accounting Standards	Adoption of New Accounting Standards: In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers.” “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” “Identifying Performance Obligations and Licensing,” “Narrow-Scope Improvements and Practical Expedients,” “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” Revenue Recognition In August 2016, the FASB issued ASU No. 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805), Clarifying the Definition of a Business In May 2017, the FASB issued ASU 2017-09, Compensation – Stock Compensation (Topic 718) The Company adopted ASU No. 2017-09 on January 1, 2018. ASU No. 2017-09 did not have a material impact on the Company’s Consolidated Financial Statements.
Effect of Newly Issued but Not Yet Effective Accounting Standards	Effect of Newly Issued but Not Yet Effective Accounting Standards: In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments In January 2017, the FASB issued ASU 2017-04, Simplifying the Test for Goodwill Impairment In March 2017, the FASB issued ASU 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20). In July 2017, the FASB issued ASU 2017-11, Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), and Derivative and Hedging (Topic 815) Debt—Debt with Conversion and Other Options In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 850) In January 2018, the FASB issued ASU 2018-01, Leases (Topic 842) In February 2018, the FASB issued ASU 2018-03, Technical Corrections and Improvements to Financial Instruments—Overall (Subtopic 825-10) Fair Value Measurement Derivatives and Hedging—Embedded Derivatives Financial Instruments—Overall

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Investments Debt And Equity Securities [Abstract]
Available for Sale Securities	The amortized cost and fair market value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive loss were as follows: March 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities and obligations of U.S. government agencies $ 29,989 $ 89 $ (281 ) $ 29,797 Obligations of states and political subdivisions 115,754 2,570 (661 ) 117,663 Mortgage-backed securities in government sponsored entities 87,832 279 (1,529 ) 86,582 Total debt securities $ 233,575 $ 2,938 $ (2,471 ) $ 234,042 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities and obligations of U.S. government agencies $ 30,450 $ 100 $ (192 ) $ 30,358 Obligations of states and political subdivisions 114,002 4,226 (172 ) 118,056 Mortgage-backed securities in government sponsored entities 82,098 408 (690 ) 81,816 Total debt securities $ 226,550 $ 4,734 $ (1,054 ) $ 230,230
Fair Value of Securities by Contractual Maturity	The amortized cost and fair value of securities at March 31, 2018, by contractual maturity, is shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Securities not due at a single maturity date, primarily mortgage-backed securities and equity securities are shown separately. Available for sale Amortized Cost Fair Value Due in one year or less $ 13,831 $ 13,776 Due after one year through five years 22,569 22,474 Due after five years through ten years 31,666 32,835 Due after ten years 77,677 78,375 Mortgage-backed securities 87,832 86,582 Total securities available for sale $ 233,575 $ 234,042
Securities with Unrealized Losses Not Recognized in Income	Securities with unrealized losses at March 31, 2018 and December 31, 2017 not recognized in income are as follows: March 31, 2018 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ 17,342 $ (158 ) $ 9,438 $ (123 ) $ 26,780 $ (281 ) Obligations of states and political subdivisions 27,137 (410 ) 7,168 (251 ) 34,305 (661 ) Mortgage-backed securities in gov’t sponsored entities 50,236 (807 ) 20,926 (722 ) 71,162 (1,529 ) Total temporarily impaired $ 94,715 $ (1,375 ) $ 37,532 $ (1,096 ) $ 132,247 $ (2,471 ) December 31, 2017 12 Months or less More than 12 months Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities and obligations of U.S. government agencies $ 20,449 $ (100 ) $ 6,617 $ (92 ) $ 27,066 $ (192 ) Obligations of states and political subdivisions 4,057 (41 ) 7,309 (131 ) 11,366 (172 ) Mortgage-backed securities in gov’t sponsored entities 29,534 (195 ) 22,199 (495 ) 51,733 (690 ) Total temporarily impaired $ 54,040 $ (336 ) $ 36,125 $ (718 ) $ 90,165 $ (1,054 )
Schedule of Net Gains and Losses on Equity Investments Recognized in Earnings and Portion of Unrealized Gains and Losses for Period that Relates to Equity Investments	The following table presents the net gains and losses on equity investments recognized in earnings at March 31, 2018, and the portion of unrealized gains and losses for the period that relates to equity investments held at March 31, 2018: Net gains (losses) recognized in equity securities during the period $ 40 Less: Net gains (losses) realized on the sale of equity securities during the period — Unrealized gains (losses) recognized in equity securities held at reporting date $ 40

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loan Balances	Loan balances were as follows: March 31, 2018 December 31, 2017 Commercial & Agriculture $ 137,076 $ 152,473 Commercial Real Estate- Owner Occupied 162,985 164,099 Commercial Real Estate- Non-Owner Occupied 436,160 425,623 Residential Real Estate 267,430 268,735 Real Estate Construction 95,856 97,531 Farm Real Estate 37,928 39,461 Consumer and Other 16,323 16,739 Total loans 1,153,758 1,164,661 Allowance for loan losses (12,814 ) (13,134 ) Net loans $ 1,140,944 $ 1,151,527

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2018
Text Block [Abstract]
Changes in the Allowance for Loan Losses	The following tables present, by portfolio segment, the changes in the allowance for loan losses for the three months ended March 31, 2018 and 2017. Allowance for loan losses: March 31, 2018 Beginning Charge-offs Recoveries Provision Ending Balance Commercial & Agriculture $ 1,562 $ (125 ) $ 19 $ (97 ) $ 1,359 Commercial Real Estate: Owner Occupied 2,043 (193 ) 9 171 2,030 Non-Owner Occupied 5,307 (44 ) 14 393 5,670 Residential Real Estate 1,910 (22 ) 58 (196 ) 1,750 Real Estate Construction 834 — — (14 ) 820 Farm Real Estate 430 — 1 (20 ) 411 Consumer and Other 290 (41 ) 4 (6 ) 247 Unallocated 758 — — (231 ) 527 Total $ 13,134 $ (425 ) $ 105 $ — $ 12,814 Allowance for loan losses: March 31, 2017 Beginning balance Charge-offs Recoveries Provision Ending Balance Commercial & Agriculture $ 2,018 $ (1 ) $ 56 $ (504 ) $ 1,569 Commercial Real Estate: Owner Occupied 2,171 — 2 86 2,259 Non-Owner Occupied 4,606 — 5 (68 ) 4,543 Residential Real Estate 3,089 (89 ) 55 (33 ) 3,022 Real Estate Construction 420 — 5 (12 ) 413 Farm Real Estate 442 — — (35 ) 407 Consumer and Other 314 (41 ) 3 78 354 Unallocated 245 — — 488 733 Total $ 13,305 $ (131 ) $ 126 $ — $ 13,300 The following tables present, by portfolio segment, the allocation of the allowance for loan losses and related loan balances as of March 31, 2018 and December 31, 2017. March 31, 2018 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ — $ 60 $ 1,299 $ 1,359 Commercial Real Estate: Owner Occupied — 8 2,022 2,030 Non-Owner Occupied — — 5,670 5,670 Residential Real Estate 37 105 1,608 1,750 Real Estate Construction — — 820 820 Farm Real Estate — 6 405 411 Consumer and Other — — 247 247 Unallocated — — 527 527 Total $ 37 $ 179 $ 12,598 $ 12,814 Outstanding loan balances: Commercial & Agriculture $ 80 $ 1,025 $ 135,971 $ 137,076 Commercial Real Estate: Owner Occupied — 532 162,453 162,985 Non-Owner Occupied — 43 436,117 436,160 Residential Real Estate 119 1,335 265,976 267,430 Real Estate Construction — — 95,856 95,856 Farm Real Estate — 793 37,135 37,928 Consumer and Other — — 16,323 16,323 Total $ 199 $ 3,728 $ 1,149,831 $ 1,153,758 December 31, 2017 Loans acquired with credit deterioration Loans individually evaluated for impairment Loans collectively evaluated for impairment Total Allowance for loan losses: Commercial & Agriculture $ 82 $ 4 $ 1,476 $ 1,562 Commercial Real Estate: Owner Occupied — 6 2,037 2,043 Non-Owner Occupied — — 5,307 5,307 Residential Real Estate 44 109 1,757 1,910 Real Estate Construction — — 834 834 Farm Real Estate — 6 424 430 Consumer and Other — — 290 290 Unallocated — — 758 758 Total $ 126 $ 125 $ 12,883 $ 13,134 Outstanding loan balances: Commercial & Agriculture $ 87 $ 438 $ 151,948 $ 152,473 Commercial Real Estate: Owner Occupied — 1,010 163,089 164,099 Non-Owner Occupied — 44 425,579 425,623 Residential Real Estate 128 1,360 267,247 268,735 Real Estate Construction — — 97,531 97,531 Farm Real Estate — 608 38,853 39,461 Consumer and Other — — 16,739 16,739 Total $ 215 $ 3,460 $ 1,160,986 $ 1,164,661
Credit Exposures by Internally Assigned Grades	March 31, 2018 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 131,082 $ 2,820 $ 3,174 $ — $ 137,076 Commercial Real Estate: Owner Occupied 155,400 1,273 6,312 — 162,985 Non-Owner Occupied 433,379 2,334 447 — 436,160 Residential Real Estate 61,428 1,884 5,628 — 68,940 Real Estate Construction 89,195 1,276 27 — 90,498 Farm Real Estate 29,034 6,094 2,800 — 37,928 Consumer and Other 1,434 — 67 — 1,501 Total $ 900,952 $ 15,681 $ 18,455 $ — $ 935,088 December 31, 2017 Pass Special Mention Substandard Doubtful Ending Balance Commercial & Agriculture $ 140,842 $ 8,412 $ 3,219 $ — $ 152,473 Commercial Real Estate: Owner Occupied 155,756 1,166 7,177 — 164,099 Non-Owner Occupied 422,363 2,321 939 — 425,623 Residential Real Estate 62,628 1,997 5,873 — 70,498 Real Estate Construction 91,545 15 27 — 91,587 Farm Real Estate 25,228 11,236 2,997 — 39,461 Consumer and Other 1,312 — 70 — 1,382 Total $ 899,674 $ 25,147 $ 20,302 $ — $ 945,123
Performing and Nonperforming Loans	Certain TDRs are classified as nonperforming at the time of restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months. March 31, 2018 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 198,490 $ 5,358 $ 14,802 $ 218,650 Nonperforming — — 20 20 Total $ 198,490 $ 5,358 $ 14,822 $ 218,670 December 31, 2017 Residential Real Estate Real Estate Construction Consumer and Other Total Performing $ 198,237 $ 5,944 $ 15,341 $ 219,522 Nonperforming — — 16 16 Total $ 198,237 $ 5,944 $ 15,357 $ 219,538
Aging Analysis of Past Due Loans	The following tables include an aging analysis of the recorded investment of past due loans outstanding as of March 31, 2018 and December 31, 2017. March 31, 2018 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 188 $ 41 $ 808 $ 1,037 $ 135,959 $ 80 $ 137,076 $ — Commercial Real Estate: Owner Occupied 320 44 390 754 162,231 — 162,985 — Non-Owner Occupied — 49 167 216 435,944 — 436,160 — Residential Real Estate 1,643 64 554 2,261 265,050 119 267,430 — Real Estate Construction — — 27 27 95,829 — 95,856 — Farm Real Estate 152 — 186 338 37,590 — 37,928 — Consumer and Other 64 76 20 160 16,163 — 16,323 20 Total $ 2,367 $ 274 $ 2,152 $ 4,793 $ 1,148,766 $ 199 $ 1,153,758 $ 20 December 31, 2017 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Total Past Due Current Purchased Credit- Impaired Loans Total Loans Past Due 90 Days and Accruing Commercial & Agriculture $ 575 $ 2 $ 685 $ 1,262 $ 151,124 $ 87 $ 152,473 $ — Commercial Real Estate: Owner Occupied 897 104 484 1,485 162,614 — 164,099 — Non-Owner Occupied 133 — 470 603 425,020 — 425,623 — Residential Real Estate 1,613 229 785 2,627 265,980 128 268,735 — Real Estate Construction — — 27 27 97,504 — 97,531 — Farm Real Estate 27 — 186 213 39,248 — 39,461 — Consumer and Other 92 96 16 204 16,535 — 16,739 16 Total $ 3,337 $ 431 $ 2,653 $ 6,421 $ 1,158,025 $ 215 $ 1,164,661 $ 16
Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans	The following table presents loans on nonaccrual status, excluding purchased credit-impaired (PCI) loans, as of March 31, 2018 and December 31, 2017. March 31, 2018 December 31, 2017 Commercial & Agriculture $ 1,004 $ 887 Commercial Real Estate: Owner Occupied 806 1,476 Non-Owner Occupied 268 711 Residential Real Estate 2,589 2,778 Real Estate Construction 27 27 Farm Real Estate 186 186 Consumer and Other 64 67 Total $ 4,944 $ 6,132
Schedule of Troubled Debt Restructurings	Loan modifications that are considered TDRs completed during the three-month period ended March 31, 2018 were as follows. There were no loans modified in trouble debt restructuring during the three-month period ended March 31, 2017: For the Three-Month Period Ended March 31, 2018 Number of Contracts Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Commercial & Agriculture 3 $ 591 $ 591 Commercial Real Estate—Owner Occupied — — — Commercial Real Estate—Non-Owner Occupied — — — Residential Real Estate — — — Real Estate Construction — — — Farm Real Estate — — — Consumer and Other — — — Total Loan Modifications 3 $ 591 $ 591
Impaired Financing Receivables Excluding PCI Loans	The following table includes the recorded investment and unpaid principal balances for impaired financing receivables, excluding PCI loans, with the associated allowance amount, if applicable, as of March 31, 2018 and December 31, 2017. March 31, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Commercial & Agriculture $ 760 $ 760 $ — $ — Commercial Real Estate: Owner Occupied 218 218 693 913 Non-Owner Occupied 43 47 44 48 Residential Real Estate 957 1,030 977 1,049 Farm Real Estate 333 333 148 148 Consumer and Other — — — — Total 2,311 2,388 1,862 2,158 With an allowance recorded: Commercial & Agriculture 265 365 $ 60 438 438 $ 4 Commercial Real Estate: Owner Occupied 314 314 8 317 317 6 Non-Owner Occupied — — — — — — Residential Real Estate 378 381 105 383 387 109 Farm Real Estate 460 460 6 460 460 6 Total 1,417 1,520 179 1,598 1,602 125 Total: Commercial & Agriculture 1,025 1,125 60 438 438 4 Commercial Real Estate: Owner Occupied 532 532 8 1,010 1,230 6 Non-Owner Occupied 43 47 — 44 48 — Residential Real Estate 1,335 1,411 105 1,360 1,436 109 Farm Real Estate 793 793 6 608 608 6 Consumer and Other — — — — — — Total $ 3,728 $ 3,908 $ 179 $ 3,460 $ 3,760 $ 125 The following table includes the average recorded investment and interest income recognized for impaired financing receivables for the three-month periods ended March 31, 2018 and 2017. March 31, 2018 March 31, 2017 For the three months ended: Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Commercial & Agriculture $ 732 $ 7 $ 1,852 $ 6 Commercial Real Estate—Owner Occupied 771 9 1,886 22 Commercial Real Estate—Non-Owner Occupied 43 1 358 — Residential Real Estate 1,348 17 1,671 16 Real Estate Construction — — — — Farm Real Estate 701 7 614 6 Consumer and Other — — 1 — Total $ 3,595 $ 41 $ 6,382 $ 50
Schedule of Changes in Amortized Yield for PCI Loans	Changes in the amortizable yield for PCI loans were as follows, since acquisition: For the Three-Month Period Ended March 31, 2018 For the Three-Month Period Ended March 31, 2017 (In Thousands) (In Thousands) Balance at beginning of period $ 15 $ 49 Acquisition of PCI loans — — Accretion (7 ) (9 ) Balance at end of period $ 8 $ 40
Schedule of Loans Acquired and Accounted	The following table presents additional information regarding loans acquired and accounted for in accordance with ASC 310-30: At March 31, 2018 At December 31, 2017 Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) Acquired Loans with Specific Evidence of Deterioration of Credit Quality (ASC 310-30) (In Thousands) Outstanding balance $ 752 $ 775 Carrying amount 199 215

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Changes in Each Component of Accumulated Other Comprehensive Income (Loss), Net of Tax	The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax. For the Three-Month Period Ended For the Three-Month Period Ended March 31, 2018(a) March 31, 2017(a) Unrealized Gains and Losses on Available-for- Sale Securities Defined Benefit Pension Items Total Unrealized Gains and Losses on Available-for- Sale Securities Defined Benefit Pension Items Total Beginning balance $ 3,185 $ (4,309 ) $ (1,124 ) $ 2,008 $ (4,345 ) $ (2,337 ) Other comprehensive income before reclassifications (2,539 ) — (2,539 ) 299 — 299 Amounts reclassified from accumulated other comprehensive loss — 113 113 — 62 62 Net current-period other comprehensive income (2,539 ) 113 (2,426 ) 299 62 361 Reclassification of equity securities from accumulated other comprehensive loss (278 ) — (278 ) — — — Ending balance $ 368 $ (4,196 ) $ (3,828 ) $ 2,307 $ (4,283 ) $ (1,976 ) (a) Amounts in parentheses indicate debits on the consolidated balance sheets.
Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss)	The following table presents the amounts reclassified out of each component of accumulated other comprehensive income (loss). Amount Reclassified from Accumulated Other Comprehensive Income (Loss) (a) Details about Accumulated Other Comprehensive (Loss) Components For the three months ended March 31, 2018 For the three months ended March 31, 2017 Affected Line Item in the Statement Where Net Income is Presented Amortization of defined benefit pension items Actuarial gains/(losses) (b) (143 ) (94 ) Other operating expenses Tax effect 30 32 Income tax expense (113 ) (62 ) Net of tax Total reclassifications for the period $ (113 ) $ (62 ) Net of tax (a) Amounts in parentheses indicate expenses/losses and other amounts indicate income/benefit. (b) These accumulated other comprehensive income components are included in the computation of net periodic pension cost.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Acquired Intangible Assets, Other than Goodwill	Acquired intangible assets, other than goodwill, as of March 31, 2018 and December 31, 2017 were as follows: 2018 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortized intangible assets(1): MSRs $ 1,094 $ 338 $ 756 $ 1,065 $ 322 $ 743 Core deposit intangibles 7,274 6,771 503 7,274 6,738 536 Total amortized intangible assets $ 8,368 $ 7,109 $ 1,259 $ 8,339 $ 7,060 $ 1,279 (1) Excludes fully amortized intangible assets
Schedule of Estimated Amortization Expense	Estimated amortization expense for each of the next five years and thereafter is as follows: MSRs Core deposit intangibles Total 2018 $ 31 $ 78 $ 109 2019 42 88 130 2020 42 72 114 2021 42 68 110 2022 41 68 109 Thereafter 558 129 687 $ 756 $ 503 $ 1,259

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Summary of Federal Funds Purchased and Other Short-term Borrowings are Included in Federal Home Loan Bank Advances on Consolidated Balance Sheets	Short-term borrowings, which consist of federal funds purchased and other short-term borrowings are included in Federal Home Loan Bank advances on the Consolidated Balance Sheets and are summarized as follows: At March 31, 2018 At December 31, 2017 Federal Funds Purchased Short-term Borrowings Federal Funds Purchased Short-term Borrowings Outstanding balance $ — $ 55,000 $ — $ 56,900 Maximum indebtedness — 78,400 20,000 115,050 Average balance — 29,717 119 38,825 Average rate paid — 1.47 % 1.68 % 1.12 % Interest rate on balance — 1.72 % — 1.42 %
Summary of Securities Pledged as Collateral Under Repurchase Agreements	The following table presents detail regarding the securities pledged as collateral under repurchase agreements as of March 31, 2018 and December 31, 2017. All of the repurchase agreements are overnight agreements. March 31, 2018 December 31, 2017 Securities pledged for repurchase agreements: U.S. Treasury securities $ 778 $ 874 Obligations of U.S. government agencies 16,674 20,881 Total securities pledged $ 17,452 $ 21,755 Gross amount of recognized liabilities for repurchase agreements $ 17,452 $ 21,755 Amounts related to agreements not included in offsetting disclosures above $ — $ —

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings per Common Share	Diluted earnings per common share include the dilutive effect, if any, of additional potential common shares issuable under the equity incentive plan, computed using the treasury stock method, and the impact of the Company’s convertible preferred stock using the “if converted” method. Three Months Ended March 31, 2018 2017 Basic Net income $ 6,989 $ 4,635 Preferred stock dividends 303 319 Net income available to common shareholders—basic $ 6,686 $ 4,316 Weighted average common shares outstanding—basic 10,213,264 9,100,330 Basic earnings per common share $ 0.65 $ 0.47 Diluted Net income available to common shareholders—basic $ 6,686 $ 4,316 Preferred stock dividends 303 319 Net income available to common shareholders—diluted $ 6,989 $ 4,635 Weighted average common shares outstanding for basic earnings per common share 10,213,264 9,100,330 Add: Dilutive effects of convertible preferred shares 2,384,130 2,508,003 Average shares and dilutive potential common shares outstanding—diluted 12,597,394 11,608,333 Diluted earnings per common share $ 0.55 $ 0.40

Commitments, Contingencies an34

Commitments, Contingencies and Off-Balance Sheet Risk (Tables)	3 Months Ended
	Mar. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Contractual Amounts of Financial Instruments with Off-Balance-Sheet Risk	The contractual amounts of financial instruments with off-balance-sheet risk were as follows for March 31, 2018 and December 31, 2017: Contract Amount March 31, 2018 December 31, 2017 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitment to extend credit: Lines of credit and construction loans $ 8,339 $ 292,221 $ 4,982 $ 286,925 Overdraft protection 2 33,007 7 33,353 Letters of credit 624 2,627 624 2,637 $ 8,965 $ 327,855 $ 5,613 $ 322,915

Pension Information (Tables)

Pension Information (Tables)	3 Months Ended
	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Components of Net Periodic Pension Benefit	Net periodic pension benefit was as follows: Three months ended March 31, 2018 2017 Service cost $ — $ — Interest cost 125 167 Expected return on plan assets (273 ) (278 ) Other components 143 94 Net periodic pension benefit $ (5 ) $ (17 )

Equity Incentive Plan (Tables)

Equity Incentive Plan (Tables)	3 Months Ended
	Mar. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Company's Restricted Stock	The following is a summary of the status of the Company’s restricted shares and changes therein for the three-month period ended March 31, 2018: Three months ended March 31, 2018 Number of Restricted Shares Weighted Average Grant Date Fair Value Nonvested at beginning of period 42,138 $ 15.60 Granted — — Vested (17,956 ) 14.01 Forfeited — — Nonvested at end of period 24,182 $ 16.78 The following is a summary of the status of the Company’s awarded restricted shares as of March 31, 2018: At March 31, 2018 Date of Award Shares Remaining Expense Remaining Vesting Period (Years) January 15, 2016 6,160 $ 60 2.75 March 11, 2016 5,256 25 0.75 March 20, 2017 7,814 95 1.75 March 20, 2017 4,952 100 3.75 24,182 $ 280 2.20

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value	Assets and liabilities measured at fair value are summarized in the table below. Fair Value Measurements at March 31, 2018 Using: Assets: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 29,797 $ — Obligations of states and political subdivisions — 117,663 — Mortgage-backed securities in government sponsored entities — 86,582 — Total securities available for sale — 234,042 — Equity securities in financial institutions — 873 — Swap asset — 2,065 — Liabilities measured at fair value on a recurring basis: Swap liability — 2,065 — Assets measured at fair value on a nonrecurring basis: Impaired loans $ — $ — $ 1,345 Other real estate owned — — 11 Fair Value Measurements at December 31, 2017 Using: Assets: (Level 1) (Level 2) (Level 3) Assets measured at fair value on a recurring basis: Securities available for sale U.S. Treasury securities and obligations of U.S. Government agencies $ — $ 30,358 $ — Obligations of states and political subdivisions — 118,056 — Mortgage-backed securities in government sponsored entities — 81,816 — Total securities available for sale — 230,230 — Equity securities in financial institutions — 832 — Swap asset — 1,560 — Liabilities measured at fair value on a recurring basis: Swap liability — 1,560 — Assets measured at fair value on a nonrecurring basis: Impaired loans $ — $ — $ 1,040 Other real estate owned — — 16
Quantitative Information about Level 3 Fair Value Measurements	The following table presents quantitative information about the Level 3 significant unobservable inputs for assets and liabilities measured at fair value on a nonrecurring basis at March 31, 2018. Quantitative Information about Level 3 Fair Value Measurements March 31, 2018 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1,345 Appraisal of collateral Appraisal adjustments 10% - 38% 31% Liquidation expense 0% - 10% 3% Holding period 0 - 30 months 20 months Other real estate owned $ 11 Appraisal of collateral Appraisal adjustments 10% - 30% 10% Liquidation expense 0% - 10% 10% The following table presents quantitative information about the Level 3 significant unobservable inputs for assets and liabilities measured at fair value on a nonrecurring basis at December 31, 2017. Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Valuation Technique Unobservable Input Range Weighted Average Impaired loans $ 1,040 Appraisal of collateral Appraisal adjustments 0% - 30% 16% Liquidation expense 0% - 10% 8% Holding period 0 - 30 months 20 months Other real estate owned $ 16 Appraisal of collateral Appraisal adjustments 10% - 30% 10% Liquidation expense 0% - 10% 10%
Carrying Amount and Fair Value of Financial Instruments Not Measured at Fair Value on a Recurring or Nonrecurring Basis	The carrying amount and fair values of financial instruments not measured at fair value on a recurring or nonrecurring basis at March 31, 2018 are as follows: March 31, 2018 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 118,970 $ 118,970 $ 118,970 $ — $ — Other securities 14,247 14,247 14,247 — — Loans, held for sale 2,379 2,379 2,379 — — Loans 1,140,944 1,128,603 — — 1,128,603 Bank owned life insurance 25,267 25,267 25,267 — — Accrued interest receivable 4,842 4,842 4,842 — — Financial Liabilities: Nonmaturing deposits 1,149,514 1,149,173 1,149,173 — — Time deposits 141,157 141,119 — — 141,119 Short-term FHLB advances 55,000 55,000 55,000 — — Long-term FHLB advances 5,000 4,962 — — 4,962 Securities sold under agreement to repurchase 17,452 17,452 17,452 — — Subordinated debentures 29,427 32,031 — — 32,031 Accrued interest payable 100 100 100 — — The carrying amount and fair values of financial instruments not measured at fair value on a recurring or nonrecurring basis at December 31, 2017 are as follows: December 31, 2017 Carrying Amount Total Fair Value Level 1 Level 2 Level 3 Financial Assets: Cash and due from financial institutions $ 40,519 $ 40,519 $ 40,519 $ — $ — Loans, held for sale 2,197 2,197 2,197 — — Loans 1,151,527 1,146,969 — — 1,146,969 Other securities 14,247 14,247 14,247 — — Bank owned life insurance 25,125 25,125 25,125 — — Accrued interest receivable 4,488 4,488 4,488 — — Financial Liabilities: Nonmaturing deposits 981,021 981,021 981,021 — — Time deposits 223,902 223,626 — — 223,626 Short-term FHLB advances 56,900 56,900 56,900 — — Long-term FHLB advances 15,000 14,964 — — 14,964 Securities sold under agreement to repurchase 21,755 21,755 21,755 — — Subordinated debentures 29,427 31,052 — — 31,052 Accrued interest payable 410 410 410 — —

Derivative Hedging Instruments

Derivative Hedging Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Interest Rate Swap Transactions	The following table summarizes the Company’s interest rate swap positions and the impact of a 1 basis point change in interest rates as of March 31, 2018. Notional Amount Weighted Average Rate Received/(Paid) Impact of a 1 basis point change in interest rates Repricing Frequency Derivative Assets $ 80,468 5.18 % $ 44 Monthly Derivative Liabilities (80,468 ) -5.18 % (44 ) Monthly Net Exposure $ — $ — The following table summarizes the Company’s interest rate swap positions and the impact of a 1 basis point change in interest rates as of December 31, 2017. Notional Amount Weighted Average Rate Received/(Paid) Impact of a 1 basis point change in interest rates Repricing Frequency Derivative Assets $ 66,227 5.08 % $ 36 Monthly Derivative Liabilities (66,227 ) -5.08 % (36 ) Monthly Net Exposure $ — $ —

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue From Contract With Customer [Abstract]
Revenue streams in-scope and out-of-scope of Topic 606	The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three months ended March 31, 2018 and 2017. Three Months Ended March 31, 2018 2017 Noninterest Income In-scope of Topic 606: Service charges $ 1,134 $ 1,045 ATM/Interchange fees 554 510 Wealth management fees 852 707 Tax refund processing fees 2,200 2,200 Other 220 194 Noninterest Income (in-scope of Topic 606) 4,960 4,656 Noninterest Income (out-of-scope of Topic 606) 656 482 Total Noninterest Income $ 5,616 $ 5,138

Consolidated Financial Statem40

Consolidated Financial Statements - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)DwellingSegment
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of loan concentration by bank to lessors and owners of Residential Buildings and Dwellings | Dwelling	2
Number of reportable segment | Segment	1
Non Residential Buildings and Dwellings [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Amount payable to lessors	$ 297,281
Amount payable to lessors in percentage	25.80%
Residential Buildings and Dwellings [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Amount payable to lessors	$ 154,491
Amount payable to lessors in percentage	13.40%
Maximum [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Percentage of insurance commission revenue of total revenue	1.00%
Maximum [Member] | WSP [Member]
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Percentage of insurance commission revenue of total revenue	1.00%

Significant Accounting Polici41

Significant Accounting Policies - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Maximum [Member]
Significant Accounting Policies [Line Items]
Percentage of increase on assets due to new accounting standard updates	1.00%
Percentage of increase on liabilities due to new accounting standard updates	1.00%
Retained Earnings [Member]
Significant Accounting Policies [Line Items]
Change in accounting principle for adoption of ASU 2016-01	$ 278
Accumulated Other Comprehensive Loss [Member]
Significant Accounting Policies [Line Items]
Change in accounting principle for adoption of ASU 2016-01	$ (278)

Securities - Available for Sale

Securities - Available for Sale Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 233,575	$ 226,550
Gross Unrealized Gains	2,938	4,734
Gross Unrealized Losses	(2,471)	(1,054)
Fair Value	234,042	230,230
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	29,989	30,450
Gross Unrealized Gains	89	100
Gross Unrealized Losses	(281)	(192)
Fair Value	29,797	30,358
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	115,754	114,002
Gross Unrealized Gains	2,570	4,226
Gross Unrealized Losses	(661)	(172)
Fair Value	117,663	118,056
Mortgage-backed Securities in Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	87,832	82,098
Gross Unrealized Gains	279	408
Gross Unrealized Losses	(1,529)	(690)
Fair Value	$ 86,582	$ 81,816

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments Debt And Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 13,831
Amortized Cost, Due after one year through five years	22,569
Amortized Cost, Due after five years through ten years	31,666
Amortized Cost, Due after ten years	77,677
Amortized Cost, Mortgage-backed securities	87,832
Amortized Cost	233,575
Fair value, Due in one year or less	13,776
Fair value, Due after one year through five years	22,474
Fair value, Due after five years through ten years	32,835
Fair value, Due after ten years	78,375
Fair value, Mortgage-backed securities	86,582
Fair value, Total securities available for sale	$ 234,042	$ 230,230

Securities - Additional Informa

Securities - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Security	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Investments Debt And Equity Securities [Abstract]
Proceeds from sales of securities	$ 0	$ 0
Gross realized gains	0	0
Gross realized losses	0	$ 0
Carrying value of pledged securities	$ 127,808		$ 122,862
Number of securities in portfolio with unrealized losses | Security	122

Securities - Securities with Un

Securities - Securities with Unrealized Losses Not Recognized in Income (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	$ 94,715	$ 54,040
12 Months or less, Unrealized Loss	(1,375)	(336)
More than 12 months, Fair Value	37,532	36,125
More than 12 months, Unrealized Loss	(1,096)	(718)
Total Fair Value	132,247	90,165
Total Unrealized Loss	(2,471)	(1,054)
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	17,342	20,449
12 Months or less, Unrealized Loss	(158)	(100)
More than 12 months, Fair Value	9,438	6,617
More than 12 months, Unrealized Loss	(123)	(92)
Total Fair Value	26,780	27,066
Total Unrealized Loss	(281)	(192)
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	27,137	4,057
12 Months or less, Unrealized Loss	(410)	(41)
More than 12 months, Fair Value	7,168	7,309
More than 12 months, Unrealized Loss	(251)	(131)
Total Fair Value	34,305	11,366
Total Unrealized Loss	(661)	(172)
Mortgage-backed Securities in Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or less, Fair Value	50,236	29,534
12 Months or less, Unrealized Loss	(807)	(195)
More than 12 months, Fair Value	20,926	22,199
More than 12 months, Unrealized Loss	(722)	(495)
Total Fair Value	71,162	51,733
Total Unrealized Loss	$ (1,529)	$ (690)

Securities - Schedule of Net Ga

Securities - Schedule of Net Gains and Losses on Equity Investments Recognized in Earnings and Portion of Unrealized Gains and Losses for Period that Relates to Equity Investments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Investments Debt And Equity Securities [Abstract]
Net gains (losses) recognized in equity securities during the period	$ 40
Less: Net gains (losses) realized on the sale of equity securities during the period	40
Unrealized gains (losses) recognized in equity securities held at reporting date	$ 40

Loans - Loan Balances (Detail)

Loans - Loan Balances (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 1,153,758	$ 1,164,661
Allowance for loan losses	(12,814)	(13,134)
Net loans	1,140,944	1,151,527
Commercial and Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	137,076	152,473
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	162,985	164,099
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	436,160	425,623
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	267,430	268,735
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	95,856	97,531
Farm Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	37,928	39,461
Consumer and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 16,323	$ 16,739

Loans - Additional Information

Loans - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Deferred loan fees	$ 148	$ 223

Allowance for Loan Losses - Add

Allowance for Loan Losses - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2018USD ($)SecurityLoan	Mar. 31, 2017SecurityLoan	Dec. 31, 2017USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period for calculating Loss migration rates of portfolio segments	3 years
Allowance for loan losses	$ 12,814,000		$ 13,134,000
Number of days past due for loans to be considered as nonperforming	90 days
Reasonable period for nonperforming TDRs to be returned to performing status	6 months
Number of days reaching where loans are considered for nonaccrual status	90 days
Conditions where loans are considered for nonaccrual status	A loan may be returned to accruing status only if one of three conditions are met: the loan is well-secured and none of the principal and interest has been past due for a minimum of 90 days; the loan is a TDR and has made a minimum of six months payments; or the principal and interest payments are reasonably assured and a sustained period of performance has occurred, generally six months.
Loans modified in trouble debt restructuring	$ 0
Defaulted loans | SecurityLoan	0	0
Impaired loans	greater than $350
Allowance for loan losses recorded for acquired loans	$ 37,000		126,000
Foreclosed assets	11,000		16,000
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Foreclosed assets	11,000
Residential mortgages in process of foreclosure	454,000		239,000
TDRs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 216,000		$ 169,000

Allowance for Loan Losses - Cha

Allowance for Loan Losses - Changes in the Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 13,134	$ 13,305
Charge-offs	(425)	(131)
Recoveries	105	126
Ending Balance	12,814	13,300
Commercial and Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	1,562	2,018
Charge-offs	(125)	(1)
Recoveries	19	56
Provision	(97)	(504)
Ending Balance	1,359	1,569
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	2,043	2,171
Charge-offs	(193)
Recoveries	9	2
Provision	171	86
Ending Balance	2,030	2,259
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	5,307	4,606
Charge-offs	(44)
Recoveries	14	5
Provision	393	(68)
Ending Balance	5,670	4,543
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	1,910	3,089
Charge-offs	(22)	(89)
Recoveries	58	55
Provision	(196)	(33)
Ending Balance	1,750	3,022
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	834	420
Recoveries		5
Provision	(14)	(12)
Ending Balance	820	413
Farm Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	430	442
Recoveries	1
Provision	(20)	(35)
Ending Balance	411	407
Consumer and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	290	314
Charge-offs	(41)	(41)
Recoveries	4	3
Provision	(6)	78
Ending Balance	247	354
Unallocated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	758	245
Provision	(231)	488
Ending Balance	$ 527	$ 733

Allowance for Loan Losses - End

Allowance for Loan Losses - Ending Allocation of Allowance for Loan Losses and Loan Balances Outstanding (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	$ 179	$ 125
Allowance for loan losses, Collectively evaluated for impairment	12,598	12,883
Allowance for loan losses, Total	12,814	13,134	$ 13,300	$ 13,305
Outstanding loan balances, Individually evaluated for impairment	3,728	3,460
Outstanding loan balances, Collectively evaluated for impairment	1,149,831	1,160,986
Outstanding loan balances, Total	1,153,758	1,164,661
Receivables Acquired with Deteriorated Credit Quality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with credit deterioration	37	126
Loan balance of loans acquired with credit deterioration	199	215
Commercial and Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	60	4
Allowance for loan losses, Collectively evaluated for impairment	1,299	1,476
Allowance for loan losses, Total	1,359	1,562	1,569	2,018
Outstanding loan balances, Individually evaluated for impairment	1,025	438
Outstanding loan balances, Collectively evaluated for impairment	135,971	151,948
Outstanding loan balances, Total	137,076	152,473
Commercial and Agriculture [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with credit deterioration		82
Loan balance of loans acquired with credit deterioration	80	87
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	8	6
Allowance for loan losses, Collectively evaluated for impairment	2,022	2,037
Allowance for loan losses, Total	2,030	2,043	2,259	2,171
Outstanding loan balances, Individually evaluated for impairment	532	1,010
Outstanding loan balances, Collectively evaluated for impairment	162,453	163,089
Outstanding loan balances, Total	162,985	164,099
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	5,670	5,307
Allowance for loan losses, Total	5,670	5,307	4,543	4,606
Outstanding loan balances, Individually evaluated for impairment	43	44
Outstanding loan balances, Collectively evaluated for impairment	436,117	425,579
Outstanding loan balances, Total	436,160	425,623
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	105	109
Allowance for loan losses, Collectively evaluated for impairment	1,608	1,757
Allowance for loan losses, Total	1,750	1,910	3,022	3,089
Outstanding loan balances, Individually evaluated for impairment	1,335	1,360
Outstanding loan balances, Collectively evaluated for impairment	265,976	267,247
Outstanding loan balances, Total	267,430	268,735
Residential Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired with credit deterioration	37	44
Loan balance of loans acquired with credit deterioration	119	128
Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	820	834
Allowance for loan losses, Total	820	834	413	420
Outstanding loan balances, Collectively evaluated for impairment	95,856	97,531
Outstanding loan balances, Total	95,856	97,531
Farm Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Individually evaluated for impairment	6	6
Allowance for loan losses, Collectively evaluated for impairment	405	424
Allowance for loan losses, Total	411	430	407	442
Outstanding loan balances, Individually evaluated for impairment	793	608
Outstanding loan balances, Collectively evaluated for impairment	37,135	38,853
Outstanding loan balances, Total	37,928	39,461
Consumer and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	247	290
Allowance for loan losses, Total	247	290	354	314
Outstanding loan balances, Collectively evaluated for impairment	16,323	16,739
Outstanding loan balances, Total	16,323	16,739
Unallocated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Collectively evaluated for impairment	527	758
Allowance for loan losses, Total	$ 527	$ 758	$ 733	$ 245

Allowance for Loan Losses - Cre

Allowance for Loan Losses - Credit Exposures by Internally Assigned Grades (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	$ 935,088	$ 945,123
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	900,952	899,674
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	15,681	25,147
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	18,455	20,302
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	137,076	152,473
Commercial and Agriculture [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	131,082	140,842
Commercial and Agriculture [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	2,820	8,412
Commercial and Agriculture [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	3,174	3,219
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	162,985	164,099
Commercial Real Estate Owner Occupied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	155,400	155,756
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	1,273	1,166
Commercial Real Estate Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	6,312	7,177
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	436,160	425,623
Commercial Real Estate Non Owner Occupied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	433,379	422,363
Commercial Real Estate Non Owner Occupied [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	2,334	2,321
Commercial Real Estate Non Owner Occupied [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	447	939
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	68,940	70,498
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	61,428	62,628
Residential Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	1,884	1,997
Residential Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	5,628	5,873
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	90,498	91,587
Real Estate Construction [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	89,195	91,545
Real Estate Construction [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	1,276	15
Real Estate Construction [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	27	27
Farm Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	37,928	39,461
Farm Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	29,034	25,228
Farm Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	6,094	11,236
Farm Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	2,800	2,997
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	1,501	1,382
Consumer and Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	1,434	1,312
Consumer and Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans with credit exposures as assigned an internal risk grade	$ 67	$ 70

Allowance for Loan Losses - Per

Allowance for Loan Losses - Performing and Nonperforming Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Performing	$ 218,650	$ 219,522
Nonperforming	20	16
Total	218,670	219,538
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	198,490	198,237
Total	198,490	198,237
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	5,358	5,944
Total	5,358	5,944
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Performing	14,802	15,341
Nonperforming	20	16
Total	$ 14,822	$ 15,357

Allowance for Loan Losses - Agi

Allowance for Loan Losses - Aging Analysis of Past Due Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 4,793	$ 6,421
Current	1,148,766	1,158,025
Total Loans	1,153,758	1,164,661
Past Due 90 Days and Accruing	20	16
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,367	3,337
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	274	431
90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,152	2,653
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Purchased Credit-Impaired Loans	199	215
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,037	1,262
Current	135,959	151,124
Total Loans	137,076	152,473
Commercial and Agriculture [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	188	575
Commercial and Agriculture [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	41	2
Commercial and Agriculture [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	808	685
Commercial and Agriculture [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Purchased Credit-Impaired Loans	80	87
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	754	1,485
Current	162,231	162,614
Total Loans	162,985	164,099
Commercial Real Estate Owner Occupied [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	320	897
Commercial Real Estate Owner Occupied [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	44	104
Commercial Real Estate Owner Occupied [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	390	484
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	216	603
Current	435,944	425,020
Total Loans	436,160	425,623
Commercial Real Estate Non Owner Occupied [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		133
Commercial Real Estate Non Owner Occupied [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	49
Commercial Real Estate Non Owner Occupied [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	167	470
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,261	2,627
Current	265,050	265,980
Total Loans	267,430	268,735
Residential Real Estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,643	1,613
Residential Real Estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	64	229
Residential Real Estate [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	554	785
Residential Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Purchased Credit-Impaired Loans	119	128
Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	27	27
Current	95,829	97,504
Total Loans	95,856	97,531
Real Estate Construction [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	27	27
Farm Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	338	213
Current	37,590	39,248
Total Loans	37,928	39,461
Farm Real Estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	152	27
Farm Real Estate [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	186	186
Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	160	204
Current	16,163	16,535
Total Loans	16,323	16,739
Past Due 90 Days and Accruing	20	16
Consumer and Other [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	64	92
Consumer and Other [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	76	96
Consumer and Other [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 20	$ 16

Allowance for Loan Losses - Sum

Allowance for Loan Losses - Summary of Nonaccrual Loans Excluding Purchased Credit-Impaired (PCI) Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	$ 4,944	$ 6,132
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	1,004	887
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	806	1,476
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	268	711
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	2,589	2,778
Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	27	27
Farm Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	186	186
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total, Non-Accrual Status	$ 64	$ 67

Allowance for Loan Losses - Sch

Allowance for Loan Losses - Schedule of Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Contract
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Contracts | Contract	3
Pre- Modification Outstanding Recorded Investment	$ 591
Post-Modification Outstanding Recorded Investment	$ 591
Commercial and Agriculture [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Contracts | Contract	3
Pre- Modification Outstanding Recorded Investment	$ 591
Post-Modification Outstanding Recorded Investment	$ 591

Allowance for Loan Losses - Imp

Allowance for Loan Losses - Impaired Financing Receivables Excluding PCI Loans - Recorded Investment and Unpaid Principal Balances (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	$ 2,311	$ 1,862
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	2,388	2,158
Impaired financing receivables, with an allowance recorded, Recorded Investment	1,417	1,598
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	1,520	1,602
Impaired financing receivables, with an allowance recorded, Related Allowance	179	125
Impaired financing receivables, Recorded Investment, Total	3,728	3,460
Impaired financing receivables, Unpaid Principal Balance, Total	3,908	3,760
Impaired financing receivables, Related Allowance, Total	179	125
Commercial and Agriculture [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	760
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	760
Impaired financing receivables, with an allowance recorded, Recorded Investment	265	438
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	365	438
Impaired financing receivables, with an allowance recorded, Related Allowance	60	4
Impaired financing receivables, Recorded Investment, Total	1,025	438
Impaired financing receivables, Unpaid Principal Balance, Total	1,125	438
Impaired financing receivables, Related Allowance, Total	60	4
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	218	693
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	218	913
Impaired financing receivables, with an allowance recorded, Recorded Investment	314	317
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	314	317
Impaired financing receivables, with an allowance recorded, Related Allowance	8	6
Impaired financing receivables, Recorded Investment, Total	532	1,010
Impaired financing receivables, Unpaid Principal Balance, Total	532	1,230
Impaired financing receivables, Related Allowance, Total	8	6
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	43	44
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	47	48
Impaired financing receivables, Recorded Investment, Total	43	44
Impaired financing receivables, Unpaid Principal Balance, Total	47	48
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	957	977
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	1,030	1,049
Impaired financing receivables, with an allowance recorded, Recorded Investment	378	383
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	381	387
Impaired financing receivables, with an allowance recorded, Related Allowance	105	109
Impaired financing receivables, Recorded Investment, Total	1,335	1,360
Impaired financing receivables, Unpaid Principal Balance, Total	1,411	1,436
Impaired financing receivables, Related Allowance, Total	105	109
Farm Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired financing receivables, with no related allowance recorded, Recorded Investment	333	148
Impaired financing receivables, with no related allowance recorded, Unpaid Principal Balance	333	148
Impaired financing receivables, with an allowance recorded, Recorded Investment	460	460
Impaired financing receivables, with an allowance recorded, Unpaid Principal Balance	460	460
Impaired financing receivables, with an allowance recorded, Related Allowance	6	6
Impaired financing receivables, Recorded Investment, Total	793	608
Impaired financing receivables, Unpaid Principal Balance, Total	793	608
Impaired financing receivables, Related Allowance, Total	$ 6	$ 6

Allowance for Loan Losses - I58

Allowance for Loan Losses - Impaired Loans - Average Recorded Investment and Interest Income Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 3,595	$ 6,382
Interest Income Recognized	41	50
Commercial and Agriculture [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	732	1,852
Interest Income Recognized	7	6
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	771	1,886
Interest Income Recognized	9	22
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	43	358
Interest Income Recognized	1
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,348	1,671
Interest Income Recognized	17	16
Farm Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	701	614
Interest Income Recognized	$ 7	6
Consumer and Other [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment		$ 1

Allowance for Loan Losses - S59

Allowance for Loan Losses - Schedule of Changes in Amortized Yield for PCI Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Movement Schedule Roll Forward
Balance at beginning of period	$ 15	$ 49
Acquisition of PCI loans	0	0
Accretion	(7)	(9)
Balance at end of period	$ 8	$ 40

Allowance for Loan Losses - S60

Allowance for Loan Losses - Schedule of Loans Acquired and Accounted (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Outstanding balance	$ 752	$ 775
Carrying amount	$ 199	$ 215

Other Comprehensive Income - Ch

Other Comprehensive Income - Changes in Each Component of Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 184,461
Amounts reclassified from accumulated other comprehensive loss	113	$ 62
Total other comprehensive income (loss)	(2,426)	361
Ending balance	188,043
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	3,185	2,008
Other comprehensive income before reclassifications	(2,539)	299
Total other comprehensive income (loss)	(2,539)	299
Reclassification of equity securities from accumulated other comprehensive loss	(278)
Ending balance	368	2,307
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(4,309)	(4,345)
Amounts reclassified from accumulated other comprehensive loss	113	62
Total other comprehensive income (loss)	113	62
Ending balance	(4,196)	(4,283)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,124)	(2,337)
Other comprehensive income before reclassifications	(2,539)	299
Amounts reclassified from accumulated other comprehensive loss	113	62
Total other comprehensive income (loss)	(2,426)	361
Reclassification of equity securities from accumulated other comprehensive loss	(278)
Ending balance	$ (3,828)	$ (1,976)

Other Comprehensive Income - Am

Other Comprehensive Income - Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, net of tax	$ (113)	$ (62)
Accumulated Defined Benefit Plans Adjustment, Actuarial Losses [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other operating expenses	(143)	(94)
Defined Benefit Pension Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income taxes	30	32
Reclassifications, net of tax	$ (113)	$ (62)

Goodwill and Intangible Asset63

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	$ 27,095,000		$ 27,095,000
Change in carrying amount of goodwill	0		$ 0
Amortization of core deposit intangible assets	33,000	$ 167,000
Aggregate mortgage servicing rights amortization	$ 16,000	$ 11,000

Goodwill and Intangible Asset64

Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets, Other than Goodwill (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 8,368	$ 8,339
Accumulated Amortization	7,109	7,060
Net Carrying Amount	1,259	1,279
MSRs [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,094	1,065
Accumulated Amortization	338	322
Net Carrying Amount	756	743
Core deposit intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,274	7,274
Accumulated Amortization	6,771	6,738
Net Carrying Amount	$ 503	$ 536

Goodwill and Intangible Asset65

Goodwill and Intangible Assets - Schedule of Estimated Amortization Expense (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
2,018	$ 109
2,019	130
2,020	114
2,021	110
2,022	109
Thereafter	687
Net Carrying Amount	1,259	$ 1,279
MSRs [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2,018	31
2,019	42
2,020	42
2,021	42
2,022	41
Thereafter	558
Net Carrying Amount	756	743
Core deposit intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2,018	78
2,019	88
2,020	72
2,021	68
2,022	68
Thereafter	129
Net Carrying Amount	$ 503	$ 536

Short-Term Borrowings - Summary

Short-Term Borrowings - Summary of Federal Funds Purchased and Other Short-term Borrowings are Included in Federal Home Loan Bank Advances on Consolidated Balance Sheets (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum indebtedness		$ 20,000,000
Average balance		$ 119,000
Average rate paid		1.68%
Short Term Borrowings [Member]
Short-term Debt [Line Items]
Outstanding balance	$ 55,000,000	$ 56,900,000
Maximum indebtedness	78,400,000	115,050,000
Average balance	$ 29,717,000	$ 38,825,000
Average rate paid	1.47%	1.12%
Interest rate on balance	1.72%	1.42%

Short-Term Borrowings - Summa67

Short-Term Borrowings - Summary of Securities Pledged as Collateral Under Repurchase Agreements (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Offsetting Liabilities [Line Items]
Total securities pledged	$ 17,452	$ 21,755
Gross amount of recognized liabilities for repurchase agreements	17,452	21,755
Amounts related to agreements not included in offsetting disclosures above	0	0
U.S.Treasury Securities [Member]
Offsetting Liabilities [Line Items]
Total securities pledged	778	874
Obligations of U.S. Government Agencies [Member]
Offsetting Liabilities [Line Items]
Total securities pledged	$ 16,674	$ 20,881

Earnings per Common Share - Com

Earnings per Common Share - Computation of Basic and Diluted Earnings per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic
Net income	$ 6,989	$ 4,635
Preferred stock dividends	303	319
Net income available to common shareholders	$ 6,686	$ 4,316
Weighted average common shares outstanding for basic earnings per common share	10,213,264	9,100,330
Basic earnings per common share	$ 0.65	$ 0.47
Diluted
Net income available to common shareholders—basic	$ 6,686	$ 4,316
Preferred stock dividends	303	319
Net income available to common shareholders—diluted	$ 6,989	$ 4,635
Weighted average common shares outstanding for basic earnings per common share	10,213,264	9,100,330
Add: Dilutive effects of convertible preferred shares	2,384,130	2,508,003
Average shares and dilutive potential common shares outstanding—diluted	12,597,394	11,608,333
Diluted earnings per common share	$ 0.55	$ 0.40

Earnings per Common Share - Add

Earnings per Common Share - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Dilutive shares related to convertible preferred stock	2,384,130	2,508,003

Commitments, Contingencies an70

Commitments, Contingencies and Off-Balance-Sheet Risk - Contractual Amounts of Financial Instruments with Off-Balance-Sheet Risk (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	$ 8,965	$ 5,613
Variable Rate	327,855	322,915
Lines of Credit and Construction Loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	8,339	4,982
Variable Rate	292,221	286,925
Overdraft Protection [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	2	7
Variable Rate	33,007	33,353
Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	624	624
Variable Rate	$ 2,627	$ 2,637

Commitments, Contingencies an71

Commitments, Contingencies and Off-Balance-Sheet Risk - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Maximum period of commitments to make loans	1 year
Maximum time period of maturities	30 years
Average reserve balance under Federal Reserve Board requirements	$ 55,399	$ 4,112
Minimum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Range of fixed interest rate loan commitments	2.88%	2.88%
Maximum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Range of fixed interest rate loan commitments	8.50%	10.25%

Pension Information - Additiona

Pension Information - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Additional benefits under pension plan	$ 0
Expected future employer contributions	$ 0
Employer contributions		$ 2,000,000

Pension Information - Component

Pension Information - Components of Net Periodic Pension Benefit (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Service cost	$ 0	$ 0
Interest cost	125	167
Expected return on plan assets	(273)	(278)
Other components	143	94
Net periodic pension benefit	$ (5)	$ (17)

Equity Incentive Plan - Additio

Equity Incentive Plan - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 11, 2017	May 16, 2017	Jan. 04, 2016	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted common shares granted				24,182
Expected future compensation expense				$ 280
Civista [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation - Civista BOD	$ 8	$ 144
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vesting service period			3 years
Restricted common shares granted	367	6,804
2014 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares under stock option plan authorized for issuance						375,000
Number of shares available for grant under stock option plan				292,209
Options granted				0	0
Share based compensation expense				$ 36
Expected future compensation expense				$ 280
Weighted average remaining life of grants related to unvested awards not yet recognized				2 years 2 months 12 days

Equity Incentive Plan - Summary

Equity Incentive Plan - Summary of Company's Restricted Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	Sep. 11, 2017	May 16, 2017	Mar. 31, 2018
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted			24,182
Expected future remaining compensation expense			$ 280
Expected future compensation expense, restricted shares remaining vesting period			2 years 2 months 12 days
Restricted Shares Awarded on January 15, 2016 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted			6,160
Date of Award			Jan. 15, 2016
Expected future remaining compensation expense			$ 60
Expected future compensation expense, restricted shares remaining vesting period			2 years 9 months
Restricted Shares Awarded on March 11, 2016 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted			5,256
Date of Award			Mar. 11, 2016
Expected future remaining compensation expense			$ 25
Expected future compensation expense, restricted shares remaining vesting period			9 months
Restricted Shares Awarded on March 20, 2017 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted			7,814
Date of Award			Mar. 20, 2017
Expected future remaining compensation expense			$ 95
Expected future compensation expense, restricted shares remaining vesting period			1 year 9 months
Restricted Shares Awarded on March 20, 2017 [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Granted			4,952
Date of Award			Mar. 20, 2017
Expected future remaining compensation expense			$ 100
Expected future compensation expense, restricted shares remaining vesting period			3 years 9 months
Restricted Stock [Member]
Schedule Of Nonvested Stock Option Activity [Line Items]
Number of Restricted Shares, Nonvested at beginning of period			42,138
Number of Restricted Shares, Granted	367	6,804
Number of Restricted Shares, Vested			(17,956)
Number of Restricted Shares, Forfeited			0
Number of Restricted Shares, Nonvested at end of period			24,182
Weighted Average Grant Date Fair Value, Nonvested at beginning of period			$ 15.60
Weighted Average Grant Date Fair Value, Vested			14.01
Weighted Average Grant Date Fair Value, Forfeited			0
Weighted Average Grant Date Fair Value, Nonvested at end of period			$ 16.78

Fair Value Measurement - Assets

Fair Value Measurement - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	$ 234,042	$ 230,230
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,345	1,040
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	11	16
(Level 2) [Member] | Assets Measured at Fair Value on a Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	234,042	230,230
(Level 2) [Member] | Assets Measured at Fair Value on a Recurring Basis [Member] | Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value swap asset	2,065	1,560
Fair value swap liability	2,065	1,560
(Level 2) [Member] | Assets Measured at Fair Value on a Recurring Basis [Member] | U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	29,797	30,358
(Level 2) [Member] | Assets Measured at Fair Value on a Recurring Basis [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	117,663	118,056
(Level 2) [Member] | Assets Measured at Fair Value on a Recurring Basis [Member] | Mortgage-backed Securities in Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities available for sale	86,582	81,816
(Level 2) [Member] | Assets Measured at Fair Value on a Recurring Basis [Member] | Equity Securities in Financial Institutions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	873	832
(Level 3) [Member] | Assets Measured at Fair Value on a Nonrecurring Basis [Member] | Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1,345	1,040
(Level 3) [Member] | Assets Measured at Fair Value on a Nonrecurring Basis [Member] | Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 11	$ 16

Fair Value Measurement - Quanti

Fair Value Measurement - Quantitative Information about Level 3 Fair Value Measurements (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Impaired Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Estimate	$ 1,345	$ 1,040
Fair Value Measurements, Valuation Technique	Appraisal of collateral	Appraisal of collateral
Impaired Loans [Member] | Minimum [Member] | Appraisal of Collateral [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions, Appraisal adjustments	10.00%	0.00%
Fair Value Assumptions, Liquidation expense	0.00%	0.00%
Fair Value Assumptions, Holding period	0 months	0 months
Impaired Loans [Member] | Maximum [Member] | Appraisal of Collateral [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions, Appraisal adjustments	38.00%	30.00%
Fair Value Assumptions, Liquidation expense	10.00%	10.00%
Fair Value Assumptions, Holding period	30 months	30 months
Impaired Loans [Member] | Weighted Average [Member] | Appraisal of Collateral [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions, Appraisal adjustments	31.00%	16.00%
Fair Value Assumptions, Liquidation expense	3.00%	8.00%
Fair Value Assumptions, Holding period	20 months	20 months
Other Real Estate Owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Estimate	$ 11	$ 16
Fair Value Measurements, Valuation Technique	Appraisal of collateral	Appraisal of collateral
Other Real Estate Owned [Member] | Minimum [Member] | Appraisal of Collateral [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions, Appraisal adjustments	10.00%	10.00%
Fair Value Assumptions, Liquidation expense	0.00%	0.00%
Other Real Estate Owned [Member] | Maximum [Member] | Appraisal of Collateral [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions, Appraisal adjustments	30.00%	30.00%
Fair Value Assumptions, Liquidation expense	10.00%	10.00%
Other Real Estate Owned [Member] | Weighted Average [Member] | Appraisal of Collateral [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Assumptions, Appraisal adjustments	10.00%	10.00%
Fair Value Assumptions, Liquidation expense	10.00%	10.00%

Fair Value Measurement - Carryi

Fair Value Measurement - Carrying Amount and Fair Value of Financial Instruments Not Measured at Fair Value on a Recurring or Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Financial Assets:
Cash and due from financial institutions	$ 118,970	$ 40,519	$ 182,446	$ 36,695
Other securities	14,247	14,247
Loans, net of allowance of $12,814 and $13,134	1,140,944	1,151,527
Bank owned life insurance	25,267	25,125
Accrued interest receivable	4,842	4,488
Financial Liabilities:
Securities sold under agreement to repurchase	17,452	21,755
Carrying Amount [Member]
Financial Assets:
Cash and due from financial institutions	118,970	40,519
Other securities	14,247	14,247
Loans, held for sale	2,379	2,197
Loans, net of allowance of $12,814 and $13,134	1,140,944	1,151,527
Bank owned life insurance	25,267	25,125
Accrued interest receivable	4,842	4,488
Financial Liabilities:
Nonmaturing deposits	1,149,514	981,021
Time deposits	141,157	223,902
Short-term FHLB advances	55,000	56,900
Long-term FHLB advances	5,000	15,000
Securities sold under agreement to repurchase	17,452	21,755
Subordinated debentures	29,427	29,427
Accrued interest payable	100	410
Total Fair Value [Member]
Financial Assets:
Cash and due from financial institutions	118,970	40,519
Other securities	14,247	14,247
Loans, held for sale	2,379	2,197
Loans, net of allowance of $12,814 and $13,134	1,128,603	1,146,969
Bank owned life insurance	25,267	25,125
Accrued interest receivable	4,842	4,488
Financial Liabilities:
Nonmaturing deposits	1,149,173	981,021
Time deposits	141,119	223,626
Short-term FHLB advances	55,000	56,900
Long-term FHLB advances	4,962	14,964
Securities sold under agreement to repurchase	17,452	21,755
Subordinated debentures	32,031	31,052
Accrued interest payable	100	410
(Level 1) [Member]
Financial Assets:
Cash and due from financial institutions	118,970	40,519
Other securities	14,247	14,247
Loans, held for sale	2,379	2,197
Bank owned life insurance	25,267	25,125
Accrued interest receivable	4,842	4,488
Financial Liabilities:
Nonmaturing deposits	1,149,173	981,021
Short-term FHLB advances	55,000	56,900
Securities sold under agreement to repurchase	17,452	21,755
Accrued interest payable	100	410
(Level 3) [Member]
Financial Assets:
Loans, net of allowance of $12,814 and $13,134	1,128,603	1,146,969
Financial Liabilities:
Time deposits	141,119	223,626
Long-term FHLB advances	4,962	14,964
Subordinated debentures	$ 32,031	$ 31,052

Derivative Hedging Instrument79

Derivative Hedging Instruments - Summary of Interest Rate Swap Transactions (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net Exposure, Notional Amount	$ 0	$ 0
Derivative Financial Instruments, Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net Exposure, Notional Amount	$ 80,468,000	$ 66,227,000
Weighted Average Rate Received/(Paid)	5.18%	5.08%
Net Exposure, Impact of a 1 basis point change in interest rates	$ 44,000	$ 36,000
Repricing Frequency	Monthly
Derivative Financial Instruments, Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net Exposure, Notional Amount	$ (80,468,000)	$ (66,227,000)
Weighted Average Rate Received/(Paid)	5.18%	5.08%
Net Exposure, Impact of a 1 basis point change in interest rates	$ (44,000)	$ (36,000)
Repricing Frequency	Monthly

Qualified Affordable Housing 80

Qualified Affordable Housing Project Investments - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Investments In Affordable Housing Projects [Abstract]
Investment for qualified affordable housing projects included in other assets	$ 3,630,000		$ 3,204,000
Unfunded commitments related to the investments in qualified affordable housing projects	3,955,000		$ 4,510,000
Recognized amortization expense	129,000	$ 82,000
Recognized tax credits and other benefits from its investment in affordable housing tax credits	219,000	138,000
Impairment losses related to its investment in qualified affordable housing projects	$ 0	$ 0

Revenue Recognition - Summary o

Revenue Recognition - Summary of Noninterest Income Segregated By Revenue Streams (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Noninterest income
Service charges	$ 1,134	$ 1,045
ATM/Interchange fees	554	510
Wealth management fees	852	707
Tax refund processing fees	2,200	2,200
Other	361	275
Total Noninterest Income	5,616	5,138
Noninterest Income (in-scope of Topic 606) [Member]
Noninterest income
Service charges	1,134	1,045
ATM/Interchange fees	554	510
Wealth management fees	852	707
Tax refund processing fees	2,200	2,200
Other	220	194
Total Noninterest Income	4,960	4,656
Noninterest Income (out-of-scope of Topic 606) [Member]
Noninterest income
Total Noninterest Income	$ 656	$ 482

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018
ASU No. 2014-09 [Member]
Revenue From Contract With Customer [Line Items]
Description of contract acquisition costs amortized	The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, the Company did not capitalize any contract acquisition cost.

Merger - Additional Information

Merger - Additional Information (Detail) - UCB and United Community Bank [Member] $ / shares in Units, $ in Millions	Mar. 11, 2018Bank$ / sharesshares	Mar. 31, 2018	Dec. 31, 2017USD ($)
Business Combinations [Line Items]
Date of acquisition agreement		Mar. 11, 2018
Number of banking offices acquired | Bank	8
Total consolidated assets | $			$ 546
Total loans | $			296
Total deposits | $			$ 462
Per share common stock	$ 1.027
Per share cash consideration	$ 2.54
Stock options outstanding | shares	212,563
Share price per share	$ 26.22
Aggregate cash consideration to be paid	$ 13,600,000