Peoples Bancorp (PEBO) 10-Q 7 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 06, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	PEOPLES BANCORP INC.
Entity Central Index Key	318,300
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		19,555,775

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 60,567	$ 58,121
Interest-bearing deposits in other banks	34,606	14,073
Total cash and cash equivalents	95,173	72,194
Available-for-sale investment securities, at fair value (amortized cost of $819,431 at September 30, 2018 and $797,732 at December 31, 2017) (a)	793,325	795,187
Held-to-maturity investment securities, at amortized cost (fair value of $37,095 at September 30, 2018 and $41,213 at December 31, 2017)	37,790	40,928
Other investment securities (a)	43,044	38,371
Total investment securities	874,159	874,486
Loans, net of deferred fees and costs	2,707,727	2,357,137
Allowance for loan losses	(19,879)	(18,793)
Net loans	2,687,848	2,338,344
Loans held for sale	4,776	2,510
Bank owned life insurance	57,527	52,510
Bank owned life insurance	68,439	62,176
Goodwill	151,673	133,111
Other intangible assets	11,728	11,465
Other assets	51,766	34,890
Total assets	4,003,089	3,581,686
Liabilities
Non-interest-bearing	617,447	556,010
Interest-bearing	2,423,676	2,174,320
Total deposits	3,041,123	2,730,330
Short-term borrowings	296,830	209,491
Long-term borrowings	111,099	144,019
Accrued expenses and other liabilities	49,747	39,254
Total liabilities	3,498,799	3,123,094
Stockholders’ equity
Preferred stock, no par value, 50,000 shares authorized, no shares issued at September 30, 2018 and December 31, 2017	0	0
Common stock, no par value, 24,000,000 shares authorized, 20,119,194 shares issued at September 30, 2018 and 18,952,385 shares issued at December 31, 2017, including shares in treasury	386,142	345,412
Retained earnings (b)	152,976	134,362
Accumulated other comprehensive loss, net of deferred income taxes (b)	(20,590)	(5,215)
Treasury stock, at cost, 609,250 shares at September 30, 2018 and 702,449 shares at December 31, 2017	(14,238)	(15,967)
Total stockholders’ equity	504,290	458,592
Total liabilities and stockholders’ equity	$ 4,003,089	$ 3,581,686

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Other Investments and Securities, at Cost			$ 7,800
Cumulative Effect on Retained Earnings, Net of Tax		$ 3,100
Other comprehensive income (loss), net of tax	$ 0	5,020
Assets
Available-for-sale investment securities at amortized cost	819,431	819,431	797,732
Held-to-maturity investment securities at fair value	$ 37,095	$ 37,095	$ 41,213
Stockholders’ equity
Preferred stock - shares authorized	50,000	50,000	50,000
Preferred stock - shares issued	0	0	0
Common stock - shares authorized	24,000,000	24,000,000	24,000,000
Common stock - shares issued	20,119,194	20,119,194	18,952,385
Treasury stock - shares	608,379	608,379	702,449

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest income:
Interest and fees on loans	$ 33,355,000	$ 26,370,000	$ 91,486,000	$ 76,133,000
Interest and dividends on taxable investment securities	5,577,000	5,615,000	17,057,000	15,280,000
Interest on tax-exempt investment securities	613,000	701,000	1,891,000	2,257,000
Other interest income	86,000	42,000	192,000	83,000
Total interest income	39,631,000	32,728,000	110,626,000	93,753,000
Interest expense:
Interest on deposits	4,018,000	1,865,000	9,332,000	5,081,000
Interest on short-term borrowings	1,617,000	369,000	3,760,000	853,000
Interest on long-term borrowings	672,000	1,274,000	2,043,000	3,564,000
Total interest expense	6,307,000	3,508,000	15,135,000	9,498,000
Net interest income	33,324,000	29,220,000	95,491,000	84,255,000
Provision for loan losses	1,302,000	1,086,000	4,473,000	2,657,000
Net interest income after provision for loan losses	32,022,000	28,134,000	91,018,000	81,598,000
Non-interest income:
Insurance income	3,388,000	3,345,000	11,412,000	10,861,000
Mortgage banking income	1,060,000	535,000	2,380,000	1,389,000
Bank owned life insurance income	495,000	482,000	1,460,000	1,471,000
Net gain (loss) on asset disposals and other transactions	12,000	(25,000)	(319,000)	81,000
Net gain (loss) on investment securities	0	1,861,000	(146,000)	2,219,000
Other non-interest income (a)	391,000	383,000	2,143,000	1,499,000
Total non-interest income	14,353,000	14,446,000	42,577,000	41,834,000
Non-interest expense:
Salaries and employee benefit costs	17,908,000	15,141,000	51,923,000	45,686,000
Net occupancy and equipment expense	2,850,000	2,619,000	8,519,000	7,980,000
Electronic banking expense	1,552,000	1,403,000	4,409,000	4,293,000
Data processing and software expense	1,408,000	1,092,000	4,089,000	3,330,000
Professional fees	1,395,000	1,393,000	6,135,000	4,532,000
Amortization of other intangible assets	862,000	869,000	2,477,000	2,603,000
Franchise tax expense	616,000	583,000	1,874,000	1,750,000
Marketing expense	456,000	488,000	1,437,000	1,122,000
FDIC insurance expense	391,000	449,000	1,173,000	1,339,000
Foreclosed real estate and other loan expenses	373,000	214,000	923,000	589,000
Communication expense	305,000	334,000	949,000	1,134,000
Other non-interest expense	2,713,000	1,973,000	11,113,000	6,211,000
Total non-interest expense	30,829,000	26,558,000	95,021,000	80,569,000
Income before income taxes	15,546,000	16,022,000	38,574,000	42,863,000
Income tax expense	2,821,000	5,127,000	6,216,000	13,393,000
Net income	$ 12,725,000	$ 10,895,000	$ 32,358,000	$ 29,470,000
Earnings per common share - basic	$ 0.65	$ 0.60	$ 1.70	$ 1.62
Earnings per common share - diluted	$ 0.65	$ 0.60	$ 1.69	$ 1.61
Weighted-average number of common shares outstanding - basic	19,325,457	18,056,202	18,875,290	18,043,692
Weighted-average number of common shares outstanding - diluted	19,466,865	18,213,533	19,004,087	18,199,959
Cash dividends declared	$ 5,472,000	$ 4,020,000	$ 15,709,000	$ 11,299,000
Cash dividends declared per common share	$ 0.28	$ 0.22000	$ 0.82	$ 0.62
Unrealized Gain (Loss) on Marketable Securities, Cost Method Investments, and Other Investments	$ 16,000		$ 208,000
Fiduciary and Trust [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	3,110,000	$ 2,838,000	9,410,000	$ 8,497,000
Credit and Debit Card [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	2,890,000	2,544,000	8,460,000	7,692,000
Deposit Account [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	2,652,000	2,407,000	7,160,000	7,130,000
Interest Rate Swap [Member] | transaction fee [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	$ 355,000	$ 76,000	$ 617,000	$ 995,000

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 12,725	$ 10,895	$ 32,358	$ 29,470
Available-for-sale investment securities:
Gross unrealized holding (loss) gain arising during the period	(5,813)	(236)	(18,587)	5,448
Related tax benefit (expense)	1,221	83	3,904	(1,906)
Less: reclassification adjustment for net gain (loss) included in net income	0	1,861	(146)	2,219
Related tax (expense) benefit	0	(652)	31	(777)
Amounts reclassified out of accumulated other comprehensive loss per ASU 2016-01 (a)	0	0	(5,020)	0
Related tax benefit	0	0	1,054	0
Net effect on other comprehensive (loss) income	(4,592)	(1,362)	(18,534)	2,100
Defined benefit plans:
Net gain (loss) arising during the period	1,177	(1)	1,177	(1)
Related tax expense	(247)	0	(247)	0
Amortization of unrecognized loss and service cost on benefit plans	28	25	80	72
Related tax expense	(6)	(9)	(17)	(25)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax	176	0	176	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Adjustment for Settlement or Curtailment Gain (Loss), Tax	(37)	0	(37)	0
Net effect on other comprehensive income	1,091	15	1,132	46
Cash flow hedges:
Net gain (loss) arising during the period	651	(63)	2,566	(832)
Related tax (expense) benefit	(137)	22	(539)	291
Net effect on other comprehensive income (loss)	514	(41)	2,027	(541)
Total other comprehensive (loss) income, net of tax expense	(2,987)	(1,388)	(15,375)	1,605
Total comprehensive income	$ 9,738	$ 9,507	$ 16,983	$ 31,075

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Restricted Shares	Restricted SharesCommon Stock	Restricted SharesTreasury Stock	ASB Financial Corp. [Member]Common Stock
Balance, December 31, 2017 at Dec. 31, 2017	$ 458,592	$ 345,412	$ 134,362	$ (5,215)	$ (15,967)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Amounts reclassified out of retained earnings, net of tax, per ASU 2014-09 | Accounting Standards Update 2014-09 [Member]			(3,055)
Net income	32,358		32,358
Other comprehensive income (loss), net of tax	5,020
Other comprehensive income (loss), net of tax	(10,355)			(15,375)
Cash dividends declared	(15,709)		(15,709)
Exercise of stock appreciation rights	0	(2)			2
Reissuance of treasury stock for deferred compensation plan for Boards of Directors						$ 0	$ (2,674)	$ 2,674
Reissuance of treasury stock for deferred compensation plan for Boards of Directors	46				46
Repurchase of treasury stock in connection with employee incentive plan and under compensation plan for Boards of Directors	(1,271)				(1,271)
Common shares issued under dividend reinvestment plan	497	497
Common shares issued under compensation plan for Boards of Directors	242	85			157
Common shares issued under employee stock purchase plan	189	68			121
Share-based Compensation	1,858	1,858
Issuance of common shares related to acquisition of ASB Financial Corp. (ASB)	40,898								$ 40,898
Balance, September 30, 2018 at Sep. 30, 2018	$ 504,290	$ 386,142	$ 152,976	$ (20,590)	$ (14,238)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 50,263	$ 45,852
Available-for-sale investment securities:
Purchases	(120,492)	(140,791)
Proceeds from sales	14,489	7,381
Proceeds from principal payments, calls and prepayments	93,336	111,315
Held-to-maturity investment securities:
Purchases	0	1,310
Proceeds from principal payments	3,521	1,997
Other investment securities:
Payments to Acquire Other Investments	(2,547)	0
Proceeds from sales	7,544	0
Net increase in loans held for investment	(113,433)	(99,829)
Net expenditures for bank premises and equipment	(3,660)	(3,016)
Proceeds from sales of other real estate owned	265	494
Business acquisitions, net of cash received	4,695	(450)
(Investment in) return of limited partnership and tax credit funds	(5,399)	6
Net cash used in investing activities	(121,681)	(124,203)
Financing activities:
Net increase (decrease) in non-interest-bearing deposits	31,950	(9,575)
Net increase in interest-bearing deposits	79,761	164,513
Net increase (decrease) in short-term borrowings	2,515	(111,890)
Proceeds from long-term borrowings	0	54,403
Payments on long-term borrowings	(3,092)	(3,823)
Cash dividends paid	(15,266)	(10,855)
Repurchase of treasury stock in connection with employee incentive plan and compensation plan for Boards of Directors to be held as treasury stock	(1,271)	(411)
Proceeds from issuance of common shares	24	8
Contingent consideration payments made after a business combination	(224)	(122)
Net cash provided by financing activities	94,397	82,248
Net increase in cash and cash equivalents	22,979	3,897
Cash and cash equivalents at beginning of period	72,194	66,146
Cash and cash equivalents at end of period	$ 95,173	$ 70,043

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation: The accompanying Unaudited Consolidated Financial Statements of Peoples Bancorp Inc. and its subsidiaries ("Peoples" refers to Peoples Bancorp Inc. and its consolidated subsidiaries collectively, except where the context indicates the reference relates solely to Peoples Bancorp Inc.) have been prepared in accordance with accounting principles generally accepted in the United States (“US GAAP”) for interim financial information and the instructions for Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not contain all of the information and footnotes required by US GAAP for annual financial statements and should be read in conjunction with Peoples’ Annual Report on Form 10-K for the fiscal year ended December 31, 2017 (“Peoples' 2017 Form 10-K”). The accounting and reporting policies followed in the presentation of the accompanying Unaudited Consolidated Financial Statements are consistent with those described in Note 1 of the Notes to the Consolidated Financial Statements included in Peoples’ 2017 Form 10-K, as updated by the information contained in this Form 10-Q. Management has evaluated all significant events and transactions that occurred after September 30, 2018 for potential recognition or disclosure in these consolidated financial statements. In the opinion of management, these consolidated financial statements reflect all adjustments necessary to present fairly such information for the periods and at the dates indicated. Such adjustments are normal and recurring in nature. Intercompany accounts and transactions have been eliminated. The Consolidated Balance Sheet at December 31, 2017 , contained herein, has been derived from the audited Consolidated Balance Sheet included in Peoples’ 2017 Form 10-K. The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Results of operations for interim periods are not necessarily indicative of the results to be expected for the full year, due in part to seasonal variations and unusual or infrequently occurring items. New Accounting Pronouncements: From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB") or other standard setting bodies that are adopted by Peoples as of the required effective dates. Accounting Standards Update ("ASU") 2018-14 - Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): This update modifies the disclosure requirements for employees that sponsor defined benefit pension or other postretirement plans. This update will remove some current disclosure requirements and require an explanation of the reasons for significant gains and losses related to changes in the benefit obligation, the projected benefit obligation and fair value of plan assets for plans with projected benefit obligations in excess of plan assets, and the accumulated benefit obligation and fair value of plan assets for plans with accumulated benefit obligations in excess of plan assets. This ASU will become effective for interim and annual reporting periods beginning after December 15, 2020 (effective January 1, 2021 for Peoples). Peoples is currently reviewing this update and will adopt this new accounting guidance as required. This new accounting guidance is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-13 - Fair Value Measurement (Topic 820): The amendment in this update modify the disclosure requirements for fair value measurements. The amendment removes, modifies and adds to required disclosures related to certain fair value measurements. This ASU will become effective for interim and annual reporting periods beginning after December 15, 2019 (effective January 1, 2020 for Peoples). Peoples is currently reviewing the impact of this update and will adopt this new accounting guidance as required. This new accounting guidance is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2016-02 - Leases (Topic 842): There are aspects of this new accounting guidance that are still being interpreted and the FASB has issued updates to certain aspects of the guidance to address implementation issues. The FASB issued an update in January 2018 (ASU 2018-01) and two in July of 2018 (ASU 2018-10 and 2018-11), which are to provide transparency and comparability and clarify several areas of the guidance. ASU 2018-01 provides an optional transition practical expedient to not evaluate land easements that exist or expired before the entity's adoption of Topic 842, and were not previously accounted for as leases. ASU 2018-10 provides several areas of improvement and clarification to the original standard, including: • optional practical expedient that affects entities with land easements that existed or expired before the adoption, • a rate implicit in the lease of zero should be used when applying the definition, • requirements about lease classification reassessments related to modified terms and conditions, • accounting for the exercise by a lessee of an option to extend or terminate the lease or to purchase, • re-measurement of variable lease payments using the index or rate at the measurement date, • period covered by a lessor-only option to terminate the lease is included in the lease term, • operating leases acquired as part of a previous business combination classified as direct financing leases or sales-type leases, • adjustments to earnings rather than equity when applying retrospectively to prior reporting period, and • determining loss allowance of the net investment in the lease, including cash flow. ASU 2018-11 addresses comparative reporting at adoption, including an option to apply the new lease standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. It also includes the options of separating components of lease contracts, accounting for non-lease components with the lease if the lease is classified as an operating lease and the timing of components are the same. Under ASU 2016-02 and the related updates, a lessee will be required to recognize assets and liabilities for leases with terms of more than 12 months. These ASUs will become effective for interim and annual reporting periods affected beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples is currently identifying the population of leases that will be impacted by ASU 2016-02, and assessing the impact of the guidance provided in the subsequent updates, and will adopt this new accounting guidance as required. Peoples expects to recognize a one-time cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the new standard is effective. This new accounting guidance is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-09 - Codification Improvements: This update has been issued to address suggestions received from stakeholders on the Codification and to make other incremental improvements to GAAP. The improvements facilitate Codification updates for technical corrections, clarifications, and other minor improvements. The amendments in this update that do not require transition guidance became effective upon issuance of this update and did not have an impact on Peoples' consolidated financial statements. Many of the amendments in this update do have transition guidance with effective dates for annual periods beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples will adopt this new accounting guidance as required, and it is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-07 - Compensation - Stock Compensation (Topic 718): This update has been issued as part of a simplification initiative which will expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from non-employees and improve aspects of the accounting for non-employee share-based payment transactions. The amendments will be effective for interim and annual reporting periods beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples will adopt this new accounting guidance as required, and it is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-06 - Codification Improvements (Topic 942): This update has been issued to increase stakeholders' awareness of the improvements to Topic 942, Financial Services - Depository and Lending. This update supersedes outdated guidance related to the Office of the Comptroller of the Currency's Banking Circular 202, Accounting for Net Deferred Tax Charges. The amendments became effective May 7, 2018, and did not have an impact on Peoples' consolidated financial statements. ASU 2018-05 - Income Taxes (Topic 740): The amendments in this ASU clarify required disclosures in situations where a registrant does not have the necessary information available, prepared, or analyzed in reasonable detail to complete the accounting under ASC 740 for certain income tax effects of the Tax Cuts and Jobs Act for the reporting period. As of December 31, 2017, Peoples partially completed the accounting for the income tax effects of the enactment of the Tax Cuts and Jobs Act; however, in certain cases, Peoples made reasonable estimates of the effects of a reduced federal corporate income tax rate on its existing deferred tax balances. In other cases, Peoples has not been able to make a reasonable estimate and continued to account for those items based on its existing accounting under ASC 740, and the provisions of the tax laws that were in effect immediately prior to enactment of the Tax Cuts and Jobs Act. In all cases, Peoples will continue to make and refine its calculations during the one-year re-measurement period permitted under this ASU as additional analysis is completed. In addition, these estimates may be affected as Peoples gains a more thorough understanding of the new tax reform legislation. ASU 2018-02 - Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Peoples early adopted ASU 2018-02, reclassifying income tax effects of the Tax Cuts and Jobs Act of $0.9 million from accumulated other comprehensive loss to retained earnings as of December 31, 2017. ASU 2017-12 - Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The objective of the amendments in this ASU is to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships, and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components, and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. The FASB issued an update in October of 2018, providing an eligible U.S. benchmark interest rate for purposes of applying hedge accounting. The amendments will be effective for interim and annual reporting periods beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples will adopt this new accounting guidance as required, and it is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This accounting guidance replaces the current “incurred loss” model for recognizing credit losses with an “expected loss” model, referred to as the Current Expected Credit Loss (“CECL”) model. Under the CECL model, Peoples will be required to present certain financial assets carried at amortized cost, such as loans held-for-investment and held-to-maturity debt securities, at the net amount expected to be collected. The measurement of expected credit losses is to be based on information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. This measurement will take place at the time the financial asset is first added to the balance sheet and periodically thereafter. This differs significantly from the “incurred loss” model required under current US GAAP, which delays recognition until it is probable a loss has been incurred. Accordingly, Peoples expects that the adoption of the CECL model will materially affect how the allowance for loan losses is determined and could require significant increases to the allowance for loan losses. Moreover, the CECL model may create more volatility in the level of Peoples' allowance for loan losses. If required to materially increase the level of allowance for loan losses for any reason, such increase could adversely affect Peoples' business, financial condition and results of operations. The new CECL standard will become effective for interim and annual reporting periods beginning after December 15, 2019 (effective January 1, 2020 for Peoples). Peoples continues to make progress on the design and development of estimation methodologies, current and future data requirements, and is in the process of implementing a technological solution to assist in the future calculations under the new methodology. Peoples is currently evaluating the impact that the CECL model will have on Peoples' financial statements and expects to recognize a one-time cumulative-effect adjustment to the allowance for loan loss provision as of the beginning of the first reporting period in which the new standard is effective, consistent with regulatory expectations set forth in interagency guidance issued at the end of 2016. Peoples believes that the adoption of the standard will result in an overall increase in the allowance for loan losses; however, the magnitude of the increase at adoption will depend on relevant data at the adoption date, including the characteristics of the loan portfolio, macroeconomic conditions and forecasts. Peoples has not yet determined the magnitude of any such one-time cumulative-effect adjustment or of the overall impact of the new standard on Peoples' financial condition or results of operations.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Assets and Liabilities Fair value represents the amount expected to be received to sell an asset or paid to transfer a liability in its principal or most advantageous market in an orderly transaction between market participants at the measurement date. In accordance with fair value accounting guidance, Peoples measures, records and reports various types of assets and liabilities at fair value on either a recurring or a non-recurring basis in the Consolidated Financial Statements. Those assets and liabilities are presented below in the sections entitled “Assets and Liabilities Required to be Measured and Reported at Fair Value on a Recurring Basis” and “Assets and Liabilities Required to be Measured and Reported at Fair Value on a Non-Recurring Basis.” Depending on the nature of the asset or liability, Peoples uses various valuation methodologies and assumptions to estimate fair value. The measurement of fair value under US GAAP uses a hierarchy intended to maximize the use of observable inputs and minimize the use of unobservable inputs. This hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows: Level 1: Quoted prices in active exchange markets for identical assets or liabilities; also includes certain U.S. Treasury and other U.S. government and agency securities actively traded in over-the-counter markets. Level 2: Observable inputs other than Level 1 including quoted prices for similar assets or liabilities, quoted prices in less active markets, or other observable inputs that can be corroborated by observable market data; also includes derivative contracts whose value is determined using a pricing model with observable market inputs or can be derived principally from, or corroborated by, observable market data. This category generally includes certain U.S. government and agency securities, corporate debt securities, derivative instruments, and residential mortgage loans held for sale. Level 3: Unobservable inputs supported by little or no market activity for financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation; also includes observable inputs for single dealer nonbinding quotes not corroborated by observable market data. This category generally includes certain private equity investment securities, retained interests from securitizations, and certain collateralized debt obligations. Assets and liabilities are assigned to a level within the fair value hierarchy based on the lowest level of significant input used to measure fair value. Assets and liabilities may change levels within the fair value hierarchy due to market conditions or other circumstances. Those transfers are recognized on the date of the event that prompted the transfer. There were no transfers of assets or liabilities required to be measured at fair value on a recurring basis between levels of the fair value hierarchy during the periods presented. Assets and Liabilities Required to be Measured and Reported at Fair Value on a Recurring Basis The following table provides the fair value for assets and liabilities required to be measured and reported at fair value on a recurring basis on the Consolidated Balance Sheets by level in the fair value hierarchy. Recurring Fair Value Measurements at Reporting Date September 30, 2018 December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Available-for-sale investment securities: Obligations of: States and political subdivisions $ — $ 93,790 $ — $ — $ 101,569 $ — Residential mortgage-backed securities — 688,656 — — 673,664 — Commercial mortgage-backed securities — 6,713 — — 6,976 — Bank-issued trust preferred securities — 4,166 — — 5,129 — Equity investment securities (a) — — — 7,694 155 — Total available-for-sale securities — 793,325 — 7,694 787,493 — Held-to-maturity investment securities: Obligations of: States and political subdivisions $ — $ 4,889 $ — $ — $ 4,417 $ — Residential mortgage-backed securities — 28,718 — — 32,227 — Commercial mortgage-backed securities — 3,488 — — 4,569 — Total held-to-maturity securities — 37,095 — — 41,213 — Equity investment securities (a) 104 174 — — — — Loans held for sale — 4,776 — — 2,510 — Derivative assets (b) — 8,766 — — 4,594 — Liabilities: Derivative liabilities (c) $ — $ 4,871 $ — $ — $ 3,241 $ — (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securities. As of December 31, 2017, equity investment securities had a net unrealized gain of $6.5 million . (b) Included in Other assets on the Consolidated Balance Sheets. For additional information, see Note 9 of the Notes to the Unaudited Consolidated Financial Statements. (c) Included in Other liabilities on the Consolidated Balance Sheets. For additional information, see Note 9 of the Notes to the Unaudited Consolidated Financial Statements. Investment Securities Available-for-Sale and Held-to-Maturity: The fair values used by Peoples are obtained from an independent pricing service and represent either quoted market prices for the identical securities (Level 1) or fair values determined by pricing models using a market approach that considers observable market data, such as interest rate volatility, LIBOR yield curves, credit spreads and prices from market makers and live trading systems (Level 2). Management reviews the valuation methodology and quality controls utilized by the pricing services in management's overall assessment of the reasonableness of the fair values provided, and challenges prices when management believes a material discrepancy in pricing exists. Equity Investment Securities: The fair values of Peoples' equity investment securities are obtained from q uoted prices in active exchange markets for identical assets or liabilities (Level 1) or quoted prices in less active markets (Level 2). Loans Held for Sale: Loans originated and intended to be sold in the secondary market, generally one-to-four family residential loans, are carried, in aggregate, at the lower of cost or estimated fair value. The use of a valuation model using quoted prices of similar instruments are significant inputs in arriving at the fair value (Level 2). Derivative Assets and Liabilities : Derivative assets and liabilities are recognized on the Consolidated Balance Sheets at their fair value within other assets/liabilities. The fair value for derivative instruments is determined based on market prices, broker-dealer quotations on similar products, or other related input parameters (Level 2). Assets and Liabilities Required to be Measured and Reported at Fair Value on a Non-Recurring Basis The following table provides the fair value for each class of assets and liabilities required to be measured and reported at fair value on a non-recurring basis on the Consolidated Balance Sheets by level in the fair value hierarchy. Non-Recurring Fair Value Measurements at Reporting Date September 30, 2018 December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Impaired loans $ — $ — $ 25,038 $ — $ — $ 20,602 Other real estate owned (OREO) — — 106 — — 208 Impaired Loans: Impaired loans are measured and reported at fair value when the amounts to be received are less than the carrying value of the loans. One of the allowable methods for determining the amount of impairment is estimating fair value using the fair value of the collateral for collateral-dependent loans. Management’s determination of the fair value for these loans uses a market approach representing the estimated net proceeds to be received from the sale of the collateral based on observable market prices or the market value provided by independent, licensed or certified appraisers (Level 3), less estimated selling costs. At September 30, 2018 , impaired loans had an aggregate outstanding principal balance of $31.3 million . For the three and nine months ended September 30, 2018 , Peoples recognized a reduction in the specific reserve on impaired loans, through the allowance for loan losses, of $182,000 and $153,000 , respectively. Other Real Estate Owned: Other real estate owned ("OREO"), included in Other assets on the Consolidated Balance Sheets, is comprised primarily of commercial and residential real estate properties acquired by Peoples in satisfaction of a loan. OREO obtained in satisfaction of a loan is recorded at the lower of cost or estimated fair value, less estimated selling costs. The carrying value of OREO is not re-measured to fair value on a recurring basis, but is based on recent real estate appraisals and is updated at least annually. These appraisals may utilize a single valuation approach or a combination of approaches including the comparable sales approach and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available (Level 3). Financial Instruments Not Required to be Measured or Reported at Fair Value The following table provides the carrying amount for each class of assets and liabilities and the fair value for certain financial instruments that are not required to be measured or reported at fair value on the Consolidated Balance Sheets. Fair Value Measurements of Other Financial Instruments (Dollars in thousands) Fair Value Hierarchy Level September 30, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 95,173 $ 95,173 $ 72,194 $ 72,194 Other investment securities: Federal Home Loan Bank ("FHLB") stock 2 29,368 29,368 28,132 28,132 Federal Reserve Bank ("FRB") stock 2 12,294 12,294 10,179 10,179 Nonqualified deferred compensation (a) 2 1,044 1,044 — — Federal Home Loan Mortgage Corp ("FHLMC") stock 2 60 60 60 60 Total other investment securities 42,766 42,766 38,371 38,371 Loans, net of deferred fees and costs 3 2,687,848 2,780,292 2,338,344 2,274,194 Bank owned life insurance 3 68,439 68,439 62,176 62,176 Bank premises and equipment, net of accumulated depreciation 3 57,527 57,527 52,510 52,510 Servicing rights (b) 3 2,682 2,682 2,305 2,305 Liabilities: Deposits 2 $ 3,041,123 $ 3,029,072 $ 2,730,330 $ 2,730,071 Short-term borrowings 2 296,830 295,542 209,491 209,628 Long-term borrowings 2 111,099 101,779 144,019 142,108 (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities (including those held in participant accounts in the Peoples Bancorp Inc. Nonqualified Deferred Compensation Plan) from available-for-sale investment securities to other investment securities. (b) Included in Other intangible assets on the Consolidated Balance Sheets. Servicing rights are carried at the lower of cost or market value. For certain financial assets and liabilities, carrying value approximates fair value due to the nature of the financial instrument. These instruments include cash and cash equivalents, demand and other non-maturity deposits, and overnight borrowings. Peoples used the following methods and assumptions in estimating the fair value of the following financial instruments: Cash and Cash Equivalents: Cash and cash equivalents include cash on hand, balances due from other banks, interest-bearing deposits in other banks, federal funds sold and other short-term investments with original maturities of ninety days or less. The carrying amount for cash and due from banks is a reasonable estimate of fair value. (Level 1). Other Investment Securities: Certain restricted equity investment securities that do not have readily determinable fair values and for which Peoples does not exercise significant influence, are carried at cost. These cost method securities are reported as Other investment securities on the Consolidated Balance Sheets and consist primarily of shares of the FHLB of Cincinnati and the FRB of Cleveland. Other investment securities are measured at their respective redemption values (Level 2). Loans, Net of Deferred Fees and Costs: The fair value of portfolio loans assumes sale of the notes to a third-party financial investor. Accordingly, this value is not necessarily the value to Peoples if the notes were held to maturity. Peoples considered interest rate, credit and market factors in estimating the fair value of loans (Level 3). Fair values for loans are estimated using a discounted cash flow methodology. The discount rates take into account interest rates currently being offered to customers for loans with similar terms, the credit risk associated with the loan and other market factors, including liquidity. Bank Owned Life Insurance: Peoples' bank owned life insurance policies are recorded at their cash surrender value (Level 3). Peoples recognizes tax-exempt income from the periodic increases in the cash surrender value of these policies and from death benefits. Bank Premises and Equipment, Net of Accumulated Depreciation: Bank premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed on the straight-line method over the estimated useful lives of the related assets owned. Major improvements to leased facilities are capitalized and included in bank premises at cost less accumulated depreciation, which is calculated on the straight-line method over the lesser of the remaining term of the leased facility or the estimated economic life of the improvement (Level 3). Servicing Rights ("SRs") : SRs are recorded at fair value at the time of the sale of the loans to the third-party investor. Peoples follows the amortization method for the subsequent measurement of each class of separately recognized servicing assets and liabilities. Under the amortization method, Peoples amortizes the value of servicing assets or liabilities in proportion to, and over the period of, estimated net servicing income or net servicing loss, and assesses servicing assets or liabilities for impairment or increased obligation based on the fair value at each reporting date. The fair value of the SRs is determined by using a discounted cash flow model, which estimates the present value of the future net cash flows of the servicing portfolio based on various factors, such as servicing costs, expected prepayment speeds and discount rates (Level 3). Deposits: The fair value of fixed maturity certificates of deposit is estimated using a discounted cash flow calculation based on current rates offered for deposits of similar remaining maturities (Level 2). Short-term Borrowings: The fair value of short-term borrowings is estimated using discounted cash flow analysis based on rates currently available to Peoples for borrowings with similar terms (Level 2). Long-term Borrowings: The fair value of long-term borrowings is estimated using a discounted cash flow analysis based on rates currently available to Peoples for borrowings with similar terms (Level 2). Certain financial assets and financial liabilities that are not required to be measured or reported at fair value can be subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). These financial assets and liabilities include the following: customer relationships, deposit base, banking center networks, and other information required to compute Peoples’ aggregate fair value that are not included in the above information. Accordingly, the above fair values are not intended to represent the aggregate fair value of Peoples.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Available-for-sale The following table summarizes Peoples' available-for-sale investment securities: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2018 Obligations of: States and political subdivisions $ 94,014 $ 585 $ (809 ) $ 93,790 Residential mortgage-backed securities 714,360 1,558 (27,262 ) 688,656 Commercial mortgage-backed securities 6,861 — (148 ) 6,713 Bank-issued trust preferred securities 4,196 132 (162 ) 4,166 Total available-for-sale securities $ 819,431 $ 2,275 $ (28,381 ) $ 793,325 December 31, 2017 Obligations of: States and political subdivisions $ 100,039 $ 1,786 $ (256 ) $ 101,569 Residential mortgage-backed securities 684,100 2,582 (13,018 ) 673,664 Commercial mortgage-backed securities 7,004 11 (39 ) 6,976 Bank-issued trust preferred securities 5,195 141 (207 ) 5,129 Equity investment securities (a) 1,394 6,520 (65 ) 7,849 Total available-for-sale securities $ 797,732 $ 11,040 $ (13,585 ) $ 795,187 (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securities. The unrealized losses related to residential mortgage-backed securities at September 30, 2018 and December 31, 2017, were attributed to changes in market interest rates and spreads since the securities were purchased. At December 31, 2017, Peoples' investment in equity investment securities was comprised largely of common stocks issued by various unrelated bank holding companies. The gross gains and gross losses realized by Peoples from sales of available-for-sale securities for the periods ended September 30 were as follows: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Gross gains realized $ — $ 1,877 $ 5 $ 2,235 Gross losses realized — 16 151 16 Net gain (loss) realized $ — $ 1,861 $ (146 ) $ 2,219 The cost of investment securities sold, and any resulting gain or loss, was based on the specific identification method and recognized as of the trade date. The following table presents a summary of available-for-sale investment securities that had an unrealized loss: Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss September 30, 2018 Obligations of: States and political subdivisions $ 30,112 $ 224 52 $ 9,480 $ 585 6 $ 39,592 $ 809 Residential mortgage-backed securities 224,049 5,503 113 405,124 21,759 128 629,173 27,262 Commercial mortgage-backed securities 3,127 44 1 3,587 104 2 6,714 148 Bank-issued trust preferred securities — — — 1,838 162 2 1,838 162 Total $ 257,288 $ 5,771 166 $ 420,029 $ 22,610 138 $ 677,317 $ 28,381 December 31, 2017 Obligations of: States and political subdivisions $ 16,985 $ 89 18 $ 5,308 $ 167 1 $ 22,293 $ 256 Residential mortgage-backed securities 274,998 3,462 77 291,812 9,556 88 566,810 13,018 Commercial mortgage-backed securities 2,487 23 1 1,274 16 1 3,761 39 Bank-issued trust preferred securities — — — 2,792 207 3 2,792 207 Equity investment securities (a) 276 1 1 112 64 1 388 65 Total $ 294,746 $ 3,575 97 $ 301,298 $ 10,010 94 $ 596,044 $ 13,585 (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securities. Management systematically evaluates available-for-sale investment securities for other-than-temporary declines in fair value on a quarterly basis. At September 30, 2018 , management concluded no individual securities were other-than-temporarily impaired since Peoples did not have the intent to sell, nor was it more likely than not that Peoples would be required to sell, any of the securities with an unrealized loss prior to recovery. Further, the unrealized losses at both September 30, 2018 and December 31, 2017 were largely attributable to changes in market interest rates and spreads since the securities were purchased. At September 30, 2018 , approximately 99% of the mortgage-backed securities with a market value that had been at an unrealized loss position for twelve months or more were issued by U.S. government sponsored agencies. The remaining 1% , or two positions, consisted of privately issued mortgage-backed securities with all of the underlying mortgages originated prior to 2004. Both of these positions had a fair value of less than 90% of their book value, with an aggregate book and fair value of $217,000 and $145,000 , respectively. Management analyzed the underlying credit quality of these securities and concluded the unrealized losses were primarily attributable to the floating rate nature of these investments and the low number of loans remaining in these securities. The unrealized losses with respect to the two bank-issued trust preferred securities that had been in an unrealized loss position for twelve months or more at September 30, 2018 were primarily attributable to the subordinated nature of the debt. The table below presents the amortized cost, fair value and total weighted-average yield of available-for-sale securities by contractual maturity at September 30, 2018 . The weighted-average yields are based on the amortized cost. In some cases, the issuers may have the right to call or prepay obligations without call or prepayment penalties prior to the contractual maturity date. (Dollars in thousands) Within 1 Year 1 to 5 Years 5 to 10 Years Over 10 Years Total Amortized cost Obligations of: States and political subdivisions $ 714 $ 12,538 $ 26,289 $ 54,473 $ 94,014 Residential mortgage-backed securities 994 12,898 46,292 654,176 714,360 Commercial mortgage-backed securities — 5,678 — 1,183 6,861 Bank-issued trust preferred securities — — 4,196 — 4,196 Total available-for-sale securities $ 1,708 $ 31,114 $ 76,777 $ 709,832 $ 819,431 Fair value Obligations of: States and political subdivisions $ 713 $ 12,489 $ 26,184 $ 54,404 $ 93,790 Residential mortgage-backed securities 990 12,590 44,656 630,420 688,656 Commercial mortgage-backed securities — 5,548 — 1,165 6,713 Bank-issued trust preferred securities — — 4,166 — 4,166 Total available-for-sale securities $ 1,703 $ 30,627 $ 75,006 $ 685,989 $ 793,325 Total weighted-average yield 2.52 % 2.78 % 3.38 % 2.84 % 2.88 % Held-to-Maturity The following table summarizes Peoples’ held-to-maturity investment securities: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2018 Obligations of: States and political subdivisions $ 4,451 $ 438 $ — $ 4,889 Residential mortgage-backed securities 29,765 79 (1,126 ) 28,718 Commercial mortgage-backed securities 3,574 — (86 ) 3,488 Total held-to-maturity securities $ 37,790 $ 517 $ (1,212 ) $ 37,095 December 31, 2017 Obligations of: States and political subdivisions $ 3,810 $ 607 $ — $ 4,417 Residential mortgage-backed securities 32,487 269 (529 ) 32,227 Commercial mortgage-backed securities 4,631 — (62 ) 4,569 Total held-to-maturity securities $ 40,928 $ 876 $ (591 ) $ 41,213 There were no gross gains or gross losses realized by Peoples from sales of held-to-maturity securities for the three and nine months ended September 30, 2018 and 2017 . The following table presents a summary of held-to-maturity investment securities that had an unrealized loss: Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss September 30, 2018 Residential mortgage-backed securities $ 11,826 $ 182 6 $ 11,260 $ 944 3 $ 23,086 $ 1,126 Commercial mortgage-backed securities — — — 3,488 86 1 3,488 86 Total $ 11,826 $ 182 6 $ 14,748 $ 1,030 4 $ 26,574 $ 1,212 December 31, 2017 Residential mortgage-backed securities $ 1,476 $ 4 2 $ 12,098 $ 525 3 $ 13,574 $ 529 Commercial mortgage-backed securities — — — 4,569 62 1 4,569 62 Total $ 1,476 $ 4 2 $ 16,667 $ 587 4 $ 18,143 $ 591 The table below presents the amortized cost, fair value and total weighted-average yield of held-to-maturity securities by contractual maturity at September 30, 2018 . The weighted-average yields are based on the amortized cost. In some cases, the issuers may have the right to call or prepay obligations without call or prepayment penalties prior to the contractual maturity date. (Dollars in thousands) Within 1 Year 1 to 5 Years 5 to 10 Years Over 10 Years Total Amortized cost Obligations of: States and political subdivisions $ — $ 309 $ 2,982 $ 1,160 $ 4,451 Residential mortgage-backed securities — 428 8,060 21,277 29,765 Commercial mortgage-backed securities — — — 3,574 3,574 Total held-to-maturity securities $ — $ 737 $ 11,042 $ 26,011 $ 37,790 Fair value Obligations of: States and political subdivisions $ — $ 309 $ 3,410 $ 1,170 $ 4,889 Residential mortgage-backed securities — 415 8,028 20,275 28,718 Commercial mortgage-backed securities — — — 3,488 3,488 Total held-to-maturity securities $ — $ 724 $ 11,438 $ 24,933 $ 37,095 Total weighted-average yield — % 2.97 % 3.08 % 2.70 % 2.82 % Other Investment Securities Peoples' other investment securities on the Consolidated Balance Sheet consist largely of shares of FHLB of Cincinnati and FRB of Cleveland, and equity investment securities. As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securities. The following table summarizes the carrying value of Peoples' other investment securities: (Dollars in thousands) September 30, 2018 December 31, 2017 FHLB stock $ 29,368 $ 28,132 FRB stock 12,294 10,179 Equity investment securities (a) 278 — Other 1,104 60 Total other investment securities $ 43,044 $ 38,371 (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securitie s. At September 30, 2018 , there were no equity investment securities of a single issuer that exceeded 10% of Peoples' stockholders' equity. Pledged Securities Peoples had pledged available-for-sale investment securities with carrying values of $514.9 million and $522.7 million at September 30, 2018 and December 31, 2017 , respectively, and held-to-maturity investment securities with carrying values of $17.1 million and $18.3 million at September 30, 2018 and December 31, 2017 , respectively, to secure public and trust department deposits, and repurchase agreements in accordance with federal and state requirements. Peoples also pledged available-for-sale investment securities with carrying values of $61.8 million and $6.7 million at September 30, 2018 and December 31, 2017 , respectively, and held-to-maturity securities with carrying values of $17.4 million and $19.9 million at September 30, 2018 and December 31, 2017 , respectively, to secure additional borrowing capacity at the FHLB and the FRB.

Loans

Loans	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Loans	Loans Peoples' loan portfolio consists of various types of loans originated primarily as a result of lending opportunities within Peoples' primary market areas of northeastern, central, southwestern and southeastern Ohio, west central West Virginia, and northeastern Kentucky. Acquired loans consist of loans purchased in 2012 or thereafter. Loans that were acquired and subsequently re-underwritten, are reported as originated upon execution of such credit actions (for example, renewals and increases in lines of credit). The major classifications of loan balances (in each case, net of deferred fees and costs) excluding loans held for sale, were as follows: (Dollars in thousands) September 30, December 31, 2017 Originated loans: Commercial real estate, construction $ 103,562 $ 107,118 Commercial real estate, other 630,720 595,447 Commercial real estate 734,282 702,565 Commercial and industrial 510,591 438,051 Residential real estate 299,768 304,523 Home equity lines of credit 92,892 88,902 Consumer, indirect 396,701 340,390 Consumer, direct 72,601 67,010 Consumer 469,302 407,400 Deposit account overdrafts 649 849 Total originated loans $ 2,107,484 $ 1,942,290 Acquired loans: Commercial real estate, construction $ 13,050 $ 8,319 Commercial real estate, other 191,993 165,120 Commercial real estate 205,043 173,439 Commercial and industrial 41,188 34,493 Residential real estate 308,178 184,864 Home equity lines of credit 42,961 20,575 Consumer, indirect 161 329 Consumer, direct 2,712 1,147 Consumer 2,873 1,476 Total acquired loans $ 600,243 $ 414,847 Loans, net of deferred fees and costs $ 2,707,727 $ 2,357,137 Peoples has acquired various loans through business combinations for which there was, at acquisition, evidence of deterioration of credit quality since origination, and for which it was probable that all contractually required payments would not be collected. The carrying amounts of these purchased credit impaired loans included in the loan balances above are summarized as follows: (Dollars in thousands) September 30, December 31, Commercial real estate, other $ 12,812 $ 8,117 Commercial and industrial 1,343 767 Residential real estate 20,488 19,532 Consumer 61 33 Total outstanding balance $ 34,704 $ 28,449 Net carrying amount $ 23,639 $ 19,564 Changes in the accretable yield for purchased credit impaired loans for the nine months ended September 30 were as follows: (Dollars in thousands) September 30, September 30, Balance, beginning of period $ 6,704 $ 7,132 Reclassification from nonaccretable to accretable 2,019 1,285 Additions: ASB Financial Corp. (preliminary) 2,047 — Accretion (1,392 ) (1,279 ) Balance, September 30 $ 9,378 $ 7,138 Peoples completes annual re-estimations of cash flows on acquired purchased credit impaired loans in August of each year. At the end of each quarter, Peoples evaluates factors to determine if a material change has occurred in acquired loans accounted for and if a re-estimation is needed. Factors evaluated to determine if a re-estimation is needed include changes in: risk ratings, maturity dates, charge-offs, payoffs, nonaccrual status and loans that have become past due. Prepayments affect the estimated life of the loans and could change the amount of interest income, and possibly the amount of principal, expected to be collected. In reforecasting future estimated cash flows, credit loss expectations are adjusted as necessary. Peoples evaluates changes quarterly and compares the new estimated cash flows to those at the previous cash flow re-estimation date and the related materiality of the changes, and when compared to the total loan portfolio, the differences in estimated cash flows at the most recent cash flow re-estimation date compared to the previous cash flow re-estimation date would not have a material impact on amounts recorded since the last re-estimation. Peoples completed a re-estimation of cash flows on purchased credit impaired loans in August 2018, resulting in the reclassification from nonaccretable to accretable yield shown in the table above. Cash flows expected to be collected on purchased credit impaired loans are estimated by incorporating several key assumptions, similar to the initial estimate of fair value. These key assumptions include probability of default and the amount of actual prepayments after the acquisition date. Prepayments affect the estimated life of the loans and could change the amount of interest income and possibly the principal expected to be collected. In re-forecasting future estimated cash flows, credit loss expectations are adjusted as necessary. Pledged Loans Peoples pledges certain loans secured by 1-4 family and multifamily residential mortgages under a blanket collateral agreement to secure borrowings from the FHLB of Cincinnati. The amount of such pledged loans totaled $524.1 million and $487.2 million at September 30, 2018 and December 31, 2017 , respectively. Peoples also pledges commercial loans to secure borrowings with the FRB of Cleveland. The outstanding balances of these loans totaled $198.9 million and $74.0 million at September 30, 2018 and December 31, 2017 , respectively. Nonaccrual and Past Due Loans A loan is considered past due if any required principal and interest payments have not been received as of the date such payments were required to be made under the terms of the loan agreement. A loan may be placed on nonaccrual status regardless of whether or not such loan is considered past due. The recorded investments in loans on nonaccrual status and loans delinquent for 90 days or more and accruing were as follows: Nonaccrual Loans Loans 90+ Days Past Due and Accruing (Dollars in thousands) September 30, December 31, September 30, December 31, Originated loans: Commercial real estate, construction $ 725 $ 754 $ — $ — Commercial real estate, other 6,712 6,877 — — Commercial real estate 7,437 7,631 — — Commercial and industrial 1,308 739 — — Residential real estate 3,842 3,546 373 548 Home equity lines of credit 582 550 84 50 Consumer, indirect 405 256 — — Consumer, direct 31 39 — 16 Consumer 436 295 — 16 Total originated loans $ 13,605 $ 12,761 $ 457 $ 614 Acquired loans: Commercial real estate, construction $ — $ — $ 401 $ — Commercial real estate, other 225 192 60 215 Commercial real estate 225 192 461 215 Commercial and industrial 61 259 — 45 Residential real estate 1,970 2,168 965 730 Home equity lines of credit 374 312 — 22 Consumer, indirect — — 2 — Total acquired loans $ 2,630 $ 2,931 $ 1,428 $ 1,012 Total loans $ 16,235 $ 15,692 $ 1,885 $ 1,626 The following table presents the aging of the recorded investment in past due loans: Loans Past Due Current Loans Total Loans (Dollars in thousands) 30 - 59 days 60 - 89 days 90 + Days Total September 30, 2018 Originated loans: Commercial real estate, construction $ — $ — $ 725 $ 725 $ 102,837 $ 103,562 Commercial real estate, other 521 601 6,418 7,540 623,180 630,720 Commercial real estate 521 601 7,143 8,265 726,017 734,282 Commercial and industrial 624 865 988 2,477 508,114 510,591 Residential real estate 826 2,544 2,126 5,496 294,272 299,768 Home equity lines of credit 320 62 410 792 92,100 92,892 Consumer, indirect 2,308 222 220 2,750 393,951 396,701 Consumer, direct 289 5 20 314 72,287 72,601 Consumer 2,597 227 240 3,064 466,238 469,302 Deposit account overdrafts — — — — 649 649 Total originated loans $ 4,888 $ 4,299 $ 10,907 $ 20,094 $ 2,087,390 $ 2,107,484 Acquired loans: Commercial real estate, construction $ 9 $ — $ 401 $ 410 $ 12,640 $ 13,050 Commercial real estate, other 1,318 136 140 1,594 190,399 191,993 Commercial real estate 1,327 136 541 2,004 203,039 205,043 Commercial and industrial 1,263 15 20 1,298 39,890 41,188 Residential real estate 1,382 1,215 1,963 4,560 303,618 308,178 Home equity lines of credit 572 107 210 889 42,072 42,961 Consumer, indirect 5 — 2 7 154 161 Consumer, direct 19 12 — 31 2,681 2,712 Consumer 24 12 2 38 2,835 2,873 Total acquired loans $ 4,568 $ 1,485 $ 2,736 $ 8,789 $ 591,454 $ 600,243 Total loans $ 9,456 $ 5,784 $ 13,643 $ 28,883 $ 2,678,844 $ 2,707,727 Loans Past Due Current Loans Total Loans (Dollars in thousands) 30 - 59 days 60 - 89 days 90 + Days Total December 31, 2017 Originated loans: Commercial real estate, construction $ — $ — $ — $ — $ 107,118 $ 107,118 Commercial real estate, other 990 — 6,492 7,482 587,965 595,447 Commercial real estate 990 — 6,492 7,482 695,083 702,565 Commercial and industrial 1,423 92 706 2,221 435,830 438,051 Residential real estate 4,562 1,234 2,408 8,204 296,319 304,523 Home equity lines of credit 502 80 395 977 87,925 88,902 Consumer, indirect 2,153 648 105 2,906 337,484 340,390 Consumer, direct 417 46 48 511 66,499 67,010 Consumer 2,570 694 153 3,417 403,983 407,400 Deposit account overdrafts — — — — 849 849 Total originated loans $ 10,047 $ 2,100 $ 10,154 $ 22,301 $ 1,919,989 $ 1,942,290 Acquired loans: Commercial real estate, construction $ — $ — $ — $ — $ 8,319 $ 8,319 Commercial real estate, other 775 948 312 2,035 163,085 165,120 Commercial real estate 775 948 312 2,035 171,404 173,439 Commercial and industrial — 1 171 172 34,321 34,493 Residential real estate 4,656 1,391 1,910 7,957 176,907 184,864 Home equity lines of credit 126 — 301 427 20,148 20,575 Consumer, indirect 3 — — 3 326 329 Consumer, direct 10 11 — 21 1,126 1,147 Consumer 13 11 — 24 1,452 1,476 Total acquired loans $ 5,570 $ 2,351 $ 2,694 $ 10,615 $ 404,232 $ 414,847 Total loans $ 15,617 $ 4,451 $ 12,848 $ 32,916 $ 2,324,221 $ 2,357,137 Delinquency trends remained stable as 98.9% of Peoples' portfolio was considered “current” at September 30, 2018 , compared to 99.0% at June 30, 2018 and 98.8% at September 30, 2017 . Credit Quality Indicators As discussed in Note 1 of the Notes to the Consolidated Financial Statements included in Peoples' 2017 Form 10-K, Peoples categorizes the majority of its loans into risk categories based upon an established risk grading matrix using a scale of 1 to 8. A description of the general characteristics of the risk grades used by Peoples is as follows: “Pass” (grades 1 through 4): Loans in this risk category involve borrowers of acceptable-to-strong credit quality and risk who have the apparent ability to satisfy their loan obligations. Loans in this risk grade would possess sufficient mitigating factors, such as adequate collateral or strong guarantors possessing the capacity to repay the loan if required, for any weakness that may exist. “Special Mention” (grade 5): Loans in this risk grade are the equivalent of the regulatory definition of “Other Assets Especially Mentioned.” Loans in this risk category possess some credit deficiency or potential weakness, which requires a high level of management attention. Potential weaknesses include declining trends in operating earnings and cash flows and/or reliance on a secondary source of repayment. If left uncorrected, these potential weaknesses may result in noticeable deterioration of the repayment prospects for the loan or in Peoples' credit position. “Substandard” (grade 6): Loans in this risk grade are inadequately protected by the borrower's current financial condition and payment capability or the collateral pledged, if any. Loans so classified have one or more well-defined weaknesses that jeopardize the orderly repayment of the loan. They are characterized by the distinct possibility that Peoples will sustain some loss if the deficiencies are not corrected. “Doubtful” (grade 7): Loans in this risk grade have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or orderly repayment in full, on the basis of current existing facts, conditions and values, highly questionable and improbable. Possibility of loss is extremely high, but because of certain important and reasonably specific factors that may work to the advantage and strengthening of the exposure, classification of the loan as an estimated loss is deferred until its more exact status may be determined. “Loss” (grade 8): Loans in this risk grade are considered to be non-collectible and of such little value that their continuance as bankable assets is not warranted. This does not mean a loan has absolutely no recovery value, but rather it is neither practical nor desirable to defer writing off the loan, even though partial recovery may be obtained in the future. Charge-offs against the allowance for loan losses are taken during the period in which the loan becomes uncollectible. Consequently, Peoples typically does not maintain a recorded investment in loans within this category. Consumer loans and other smaller-balance loans are evaluated and categorized as “substandard,” “doubtful,” or “loss” based upon the regulatory definition of these classes and consistent with regulatory requirements. All other loans not evaluated individually, nor meeting the regulatory conditions to be categorized as described above, would be considered as being “not rated.” The following table summarizes the risk category of loans within Peoples' loan portfolio based upon the most recent analysis performed: Pass Rated (Grades 1 - 4) Special Mention (Grade 5) Substandard (Grade 6) Doubtful (Grade 7) Not Rated Total Loans (Dollars in thousands) September 30, 2018 Originated loans: Commercial real estate, construction $ 101,274 $ — $ 1,496 $ — $ 792 $ 103,562 Commercial real estate, other 603,723 13,992 13,005 — — 630,720 Commercial real estate 704,997 13,992 14,501 — 792 734,282 Commercial and industrial 459,927 42,036 8,628 — — 510,591 Residential real estate 14,483 537 12,506 294 271,948 299,768 Home equity lines of credit 453 — — — 92,439 92,892 Consumer, indirect 45 — — — 396,656 396,701 Consumer, direct 39 — — — 72,562 72,601 Consumer 84 — — — 469,218 469,302 Deposit account overdrafts — — — — 649 649 Total originated loans $ 1,179,944 $ 56,565 $ 35,635 $ 294 $ 835,046 $ 2,107,484 Acquired loans: Commercial real estate, construction $ 10,138 $ 1,280 $ 1,632 $ — $ — $ 13,050 Commercial real estate, other 175,375 8,450 8,070 98 — 191,993 Commercial real estate 185,513 9,730 9,702 98 — 205,043 Commercial and industrial 38,424 1,400 1,364 — — 41,188 Residential real estate 18,477 1,950 1,825 140 285,786 308,178 Home equity lines of credit 34 — — — 42,927 42,961 Consumer, indirect 4 — — — 157 161 Consumer, direct 39 — — — 2,673 2,712 Consumer 43 — — — 2,830 2,873 Total acquired loans $ 242,491 $ 13,080 $ 12,891 $ 238 $ 331,543 $ 600,243 Total loans $ 1,422,435 $ 69,645 $ 48,526 $ 532 $ 1,166,589 $ 2,707,727 Pass Rated (Grades 1 - 4) Special Mention (Grade 5) Substandard (Grade 6) Doubtful (Grade 7) Not Rated Total Loans (Dollars in thousands) December 31, 2017 Originated loans: Commercial real estate, construction $ 100,409 $ 5,502 $ 754 $ — $ 453 $ 107,118 Commercial real estate, other 561,320 17,189 16,938 — — 595,447 Commercial real estate 661,729 22,691 17,692 — 453 702,565 Commercial and industrial 420,477 13,062 4,512 — — 438,051 Residential real estate 17,896 1,000 11,371 216 274,040 304,523 Home equity lines of credit 454 — — — 88,448 88,902 Consumer, indirect 55 8 — — 340,327 340,390 Consumer, direct 33 — — — 66,977 67,010 Consumer 88 8 — — 407,304 407,400 Deposit account overdrafts — — — — 849 849 Total originated loans $ 1,100,644 $ 36,761 $ 33,575 $ 216 $ 771,094 $ 1,942,290 Acquired loans: Commercial real estate, construction $ 8,267 $ — $ 52 $ — $ — $ 8,319 Commercial real estate, other 149,486 6,527 9,107 — — 165,120 Commercial real estate 157,753 6,527 9,159 — — 173,439 Commercial and industrial 32,011 157 2,325 — — 34,493 Residential real estate 12,543 593 1,105 — 170,623 184,864 Home equity lines of credit 124 — — — 20,451 20,575 Consumer, indirect 12 — — — 317 329 Consumer, direct 35 — — — 1,112 1,147 Consumer 47 — — — 1,429 1,476 Total acquired loans $ 202,478 $ 7,277 $ 12,589 $ — $ 192,503 $ 414,847 Total loans $ 1,303,122 $ 44,038 $ 46,164 $ 216 $ 963,597 $ 2,357,137 In the first nine months of 2018, Peoples' classified loans, which are loans categorized as substandard or doubtful, increased compared to the balances at December 31, 2017 mostly due to acquired ASB Financial Corp. ("ASB") loans, which were partially offset by paydowns on classified loans. Compared to June 30, 2018, the improvement in classified loans was mostly due to a single commercial relationship that was upgraded from substandard to special mention during the quarter. Impaired Loans The following table summarizes loans classified as impaired: Unpaid Principal Balance Recorded Investment Total Recorded Investment Average Recorded Investment Interest Income Recognized With Allowance Without Allowance Related Allowance (Dollars in thousands) September 30, 2018 Commercial real estate, construction $ 2,483 $ — $ 2,396 $ 2,396 $ — $ 1,571 $ 46 Commercial real estate, other 17,119 269 15,710 15,979 91 13,795 349 Commercial real estate 19,602 269 18,106 18,375 91 15,366 395 Commercial and industrial 2,395 899 1,286 2,185 191 2,068 53 Residential real estate 26,732 234 24,913 25,147 40 22,724 898 Home equity lines of credit 2,298 486 1,784 2,270 83 1,801 84 Consumer, indirect 518 242 285 527 140 242 16 Consumer, direct 77 32 45 77 32 66 11 Consumer 595 274 330 604 172 308 27 Total $ 51,622 $ 2,162 $ 46,419 $ 48,581 $ 577 $ 42,267 $ 1,457 December 31, 2017 Commercial real estate, construction $ 821 $ — $ 754 $ 754 $ — $ 788 $ — Commercial real estate, other 14,909 14 13,606 13,620 1 14,392 503 Commercial real estate 15,730 14 14,360 14,374 1 15,180 503 Commercial and industrial 1,690 951 572 1,523 199 1,668 65 Residential real estate 24,743 477 22,626 23,103 58 23,195 1,246 Home equity lines of credit 1,707 81 1,624 1,705 18 1,505 85 Consumer, indirect 273 70 206 276 26 184 20 Consumer, direct 87 56 28 84 37 79 7 Consumer 360 126 234 360 63 263 27 Total $ 44,230 $ 1,649 $ 39,416 $ 41,065 $ 339 $ 41,811 $ 1,926 Peoples' impaired loans shown in the table above included loans that were classified as troubled debt restructurings ("TDRs"). In assessing whether or not a borrower is experiencing financial difficulties, Peoples considers information currently available regarding the financial condition of the borrower. This information includes, but is not limited to, whether (i) the borrower is currently in payment default on any of the borrower's debt; (ii) a payment default is probable in the foreseeable future without the modification; (iii) the borrower has declared or is in the process of declaring bankruptcy; and (iv) the borrower's projected cash flow is insufficient to satisfy contractual payments due under the original terms of the loan without a modification. Peoples considers all aspects of the modification to loan terms to determine whether or not a concession has been granted to the borrower. Key factors considered by Peoples include the borrower's ability to access funds at a market rate for debt with similar risk characteristics, the significance of the modification relative to the unpaid principal balance or collateral value of the debt, and the significance of a delay in the timing of payments relative to the original contractual terms of the loan. The most common concessions granted by Peoples generally include one or more modifications to the terms of the loan, such as (i) a reduction in the interest rate for the remaining life of the loan, (ii) an extension of the maturity date at an interest rate lower than the current market rate for new loans with similar risk, (iii) a temporary period of interest-only payments, and (iv) a reduction in the contractual payment amount for either a short period or the remaining term of the loan. The following table summarizes the loans that were modified as a TDR during the three months ended September 30 : Three Months Ended Recorded Investment (a) (Dollars in thousands) Number of Contracts Pre-Modification Post-Modification Remaining Recorded Investment September 30, 2018 Originated loans: Residential real estate 3 $ 87 $ 87 $ 87 Home equity lines of credit 4 533 533 531 Consumer, indirect 7 150 150 150 Total originated loans 14 $ 770 $ 770 $ 768 Acquired loans: Residential real estate 3 $ 272 $ 272 $ 272 Home equity lines of credit 1 54 54 54 Total acquired loans 4 $ 326 $ 326 $ 326 September 30, 2017 Originated loans: Commercial and industrial 1 $ 36 $ 36 $ 36 Residential real estate 1 90 90 90 Home equity lines of credit 2 22 22 19 Consumer, indirect 5 34 34 34 Consumer, direct 2 9 9 9 Consumer 7 43 43 43 Total originated loans 11 $ 191 $ 191 $ 188 Acquired loans: Residential real estate 2 $ 61 $ 61 $ 61 Home equity lines of credit 1 34 34 34 Total acquired loans 3 $ 95 $ 95 $ 95 (a) The amounts shown are inclusive of all partial paydowns and charge-offs. Loans modified in a TDR that were fully paid down, charged-off or foreclosed upon by period end are not reported. The following table summarizes the loans that were modified as a TDR during the nine months ended September 30 : Nine Months Ended Recorded Investment (a) (Dollars in thousands) Number of Contracts Pre-Modification Post-Modification Remaining Recorded Investment September 30, 2018 Originated loans: Residential real estate 9 $ 871 $ 871 $ 871 Home equity lines of credit 6 565 565 562 Consumer, indirect 26 454 454 420 Consumer, direct 5 27 27 18 Consumer 31 481 481 438 Total originated loans 46 $ 1,917 $ 1,917 $ 1,871 Acquired loans: Commercial real estate, other 1 $ 50 $ 50 $ 47 Residential real estate 15 1,258 1,258 1,244 Home equity lines of credit 5 140 140 139 Total acquired loans 21 $ 1,448 $ 1,448 $ 1,430 September 30, 2017 Originated loans: Commercial real estate, other 1 $ 14 $ 14 $ 14 Commercial and industrial 3 174 174 123 Residential real estate 7 483 483 478 Home equity lines of credit 6 291 291 286 Consumer, indirect 11 127 127 86 Consumer, direct 3 10 10 10 Consumer 14 137 137 96 Total originated loans 31 $ 1,099 $ 1,099 $ 997 Acquired loans: Commercial real estate, other 2 $ 271 $ 271 $ 265 Residential real estate 8 264 264 263 Home equity lines of credit 5 328 328 323 Consumer, direct 2 10 10 9 Total acquired loans 17 $ 873 $ 873 $ 860 (a) The amounts shown are inclusive of all partial paydowns and charge-offs. Loans modified in a TDR that were fully paid down, charged-off or foreclosed upon by period end are not reported. The following table presents those acquired loans modified in a TDR during the year that subsequently defaulted (i.e., are 90 days or more past due following a modification) during the nine -month periods ended September 30 : September 30, 2018 September 30, 2017 (Dollars in thousands) Number of Contracts Recorded Investment (a) Impact on the Allowance for Loan Losses Number of Contracts Recorded Investment (a) Impact on the Allowance for Loan Losses Acquired loans: Residential real estate — $ — $ — 1 $ 44 $ — Home equity lines of credit 1 10 — — — — Consumer, other — — — 1 8 — Total 1 $ 10 $ — 2 $ 52 $ — (a) The amounts shown are inclusive of all partial paydowns and charge-offs. Loans modified in a TDR that were fully paid down, charged-off or foreclosed upon by period end are not reported. Peoples did not have any originated loans that were modified as a TDR during the last twelve months that subsequently defaulted. Peoples had no commitments to lend additional funds to the related debtors whose terms have been modified in a TDR. Allowance for Originated Loan Losses Changes in the allowance for originated loan losses for the nine months ended September 30 were as follows: (Dollars in thousands) Commercial Real Estate Commercial and Industrial Residential Real Estate Home Equity Lines of Credit Consumer Indirect Consumer Direct Deposit Account Overdrafts Total Balance, January 1, 2018 $ 7,797 $ 5,813 $ 904 $ 693 $ 2,944 $ 464 $ 70 $ 18,685 Charge-offs (849 ) (38 ) (293 ) (67 ) (1,967 ) (297 ) (731 ) (4,242 ) Recoveries 58 10 98 12 403 114 160 855 Net charge-offs (791 ) (28 ) (195 ) (55 ) (1,564 ) (183 ) (571 ) (3,387 ) Provision for loan losses 960 353 290 70 2,043 114 596 4,426 Balance, September 30, 2018 $ 7,966 $ 6,138 $ 999 $ 708 $ 3,423 $ 395 $ 95 $ 19,724 Period-end amount allocated to: Loans individually evaluated for impairment $ 91 $ 191 $ 40 $ 83 $ 140 $ 32 $ — $ 577 Loans collectively evaluated for impairment 7,875 5,947 959 625 3,283 363 95 19,147 Ending balance $ 7,966 $ 6,138 $ 999 $ 708 $ 3,423 $ 395 $ 95 $ 19,724 Balance, January 1, 2017 $ 7,172 $ 6,353 $ 982 $ 688 $ 2,312 $ 518 $ 171 $ 18,196 Charge-offs (25 ) (165 ) (451 ) (100 ) (1,493 ) (275 ) (767 ) (3,276 ) Recoveries 135 1 128 9 598 152 159 1,182 Net recoveries (charge-offs) 110 (164 ) (323 ) (91 ) (895 ) (123 ) (608 ) (2,094 ) Provision for loan losses 252 226 265 82 1,397 46 507 2,775 Balance, September 30, 2017 $ 7,534 $ 6,415 $ 924 $ 679 $ 2,814 $ 441 $ 70 $ 18,877 Period-end amount allocated to: Loans individually evaluated for impairment $ 136 $ 424 $ 151 $ 13 $ 2 $ 21 $ — $ 747 Loans collectively evaluated for impairment 7,398 5,991 773 666 2,812 420 70 18,130 Ending balance $ 7,534 $ 6,415 $ 924 $ 679 $ 2,814 $ 441 $ 70 $ 18,877 Allowance for Loan Losses for Acquired Loans Acquired loans are recorded at their fair value as of the acquisition date with no valuation allowance, and monitored for changes in credit quality and subsequent increases or decreases in expected cash flows. Decreases in expected cash flows of acquired purchased credit impaired loans are recognized as an impairment, with the amount of the expected loss included in management's evaluation of the appropriateness of the allowance for loan losses. The methods utilized to estimate the required allowance for loan losses for nonimpaired acquired loans are similar to those utilized for originated loans; however, Peoples records a provision for loan losses only when the computed allowance exceeds the remaining fair value adjustment. The following table presents activity in the allowance for loan losses for acquired loans: Three Months Ended Nine Months Ended (Dollars in thousands) September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Purchased credit impaired loans: Balance, beginning of period $ 108 $ 90 $ 108 $ 233 Provision for (recovery of) loan losses 47 25 47 (118 ) Balance, September 30 $ 155 $ 115 $ 155 $ 115

Long-Term Borrowings

Long-Term Borrowings	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Long-Term Borrowings	Long-Term Borrowings The following table summarizes Peoples' long-term borrowings: September 30, 2018 December 31, 2017 (Dollars in thousands) Balance Weighted- Balance Weighted- FHLB putable, non-amortizing, fixed-rate advances $ 85,000 2.05 % $ 115,000 1.86 % FHLB amortizing, fixed-rate advances 18,860 2.09 % 21,939 2.02 % Junior subordinated debt securities 7,239 7.34 % 7,107 6.51 % Unamortized debt issuance costs — — % (27 ) — % Total long-term borrowings $ 111,099 2.40 % $ 144,019 2.11 % Peoples continually evaluates its overall balance sheet position given the interest rate environment. During the first nine months of 2018, no additional borrowings were entered into, and two long-term FHLB non-amortizing advances in the aggregate amount of $30.0 million were reclassified to short-term borrowings as the maturity became less than one year. As of September 30, 2018 , Peoples' had one remaining FHLB putable option-based advance. The FHLB has the option, at its sole discretion, to terminate the advance after the initial fixed rate period of three months, requiring full repayment of the advance by Peoples, prior to the stated maturity. If the advance is terminated prior to maturity, the FHLB will offer Peoples replacement funding at the then-prevailing rate on an advance product then offered by the FHLB, subject to normal FHLB credit and collateral requirements. Peoples is required to make quarterly interest payments. The amortizing, fixed-rate FHLB advances have a fixed rate for the term of each advance, with maturities ranging from two to thirteen years . These advances require monthly principal and interest payments, with some having a constant prepayment rate requiring an additional principal payment annually. These advances are not eligible for optional prepayment prior to maturity. Peoples maintains a multi-year unsecured $15.0 million revolving credit facility (the “Credit Facility”) with Raymond James Bank, N.A. that matures on March 4, 2019. Borrowings under the Credit Facility may be used: (i) to make acquisitions; (ii) to make stock repurchases; (iii) for working capital needs; and (iv) for other general corporate purposes. Each loan under the Credit Facility will bear interest per annum at a rate equal to 3.00% plus the one-month LIBOR rate, which rate will reset monthly. As of September 30, 2018 , there were no borrowings outstanding under the Credit Facility. Additional information regarding the Credit Facility can be found in Note 9 of the Notes to the Consolidated Financial Statements included in Peoples' 2017 Form 10-K. The aggregate minimum annual retirements of long-term borrowings in future periods are as follows: (Dollars in thousands) Balance Weighted-Average Rate Three months ending December 31, 2018 $ 1,455 1.97 % Year ending December 31, 2019 3,512 1.56 % Year ending December 31, 2020 25,564 1.83 % Year ending December 31, 2021 21,979 1.74 % Year ending December 31, 2022 16,521 1.95 % Thereafter 42,068 3.35 % Total long-term borrowings $ 111,099 2.40 %

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity The following table details the progression in Peoples’ common shares and treasury stock during the nine months ended September 30, 2018 : Common Shares Treasury Stock Shares at December 31, 2017 18,952,385 702,449 Changes related to stock-based compensation awards: Release of restricted common shares — 30,808 Cancellation of restricted common shares — 1,961 Exercise of stock appreciation rights — (102 ) Grant of restricted common shares — (103,605 ) Grant of common shares — (16,544 ) Changes related to deferred compensation plan for Boards of Directors: Purchase of treasury stock — 4,646 Disbursed out of treasury stock — (2,089 ) Common shares issued under dividend reinvestment plan 14,098 — Common shares issued under compensation plan for Boards of Directors — (3,088 ) Common shares issued under employee stock purchase plan — (5,186 ) Issuance of common shares related to the acquisition of ASB Financial Corp. 1,152,711 — Shares at September 30, 2018 20,119,194 609,250 Under its Amended Articles of Incorporation, Peoples is authorized to issue up to 50,000 preferred shares, in one or more series, having such voting powers, designations, preferences, rights, qualifications, limitations and restrictions as determined by Peoples' Board of Directors. At September 30, 2018 , Peoples had no preferred shares issued or outstanding. The following table details the cash dividends declared per common share during the nine months ended September 30: 2018 2017 First Quarter $ 0.26 $ 0.20 Second Quarter 0.28 0.20 Third Quarter 0.28 0.22 Total dividends declared $ 0.82 $ 0.62 Accumulated Other Comprehensive Loss The following table details the change in the components of Peoples’ accumulated other comprehensive loss for the nine months ended September 30, 2018 : (Dollars in thousands) Unrealized Loss on Securities Unrecognized Net Pension and Postretirement Costs Unrealized Gain on Cash Flow Hedge Accumulated Other Comprehensive Loss Balance, December 31, 2017 $ (2,088 ) $ (4,256 ) $ 1,129 $ (5,215 ) Reclassification adjustments to net income: Realized gain on sale of securities, net of tax 115 — — 115 Realized loss due to settlement and curtailment, net of tax — 139 — 139 Amounts reclassified out of accumulated other comprehensive loss per ASU 2016-01 (5,020 ) — — (5,020 ) Other comprehensive (loss) income, net of reclassifications and tax (13,629 ) 993 2,027 (10,609 ) Balance, September 30, 2018 $ (20,622 ) $ (3,124 ) $ 3,156 $ (20,590 )

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans Peoples sponsors a noncontributory defined benefit pension plan that covers substantially all employees hired before January 1, 2010. The plan provides retirement benefits based on an employee’s years of service and compensation. For employees hired before January 1, 2003, the amount of postretirement benefit is based on the employee’s average monthly compensation over the highest five consecutive years out of the employee’s last ten years with Peoples while an eligible employee. For employees hired on or after January 1, 2003, the amount of postretirement benefit is based on 2% of the employee’s annual compensation during the years 2003 through 2009, plus accrued interest. Effective January 1, 2010, the pension plan was closed to new entrants. Effective March 1, 2011, the accrual of pension plan benefits for all participants was frozen. Peoples recognized this freeze as a curtailment as of December 31, 2010 and March 1, 2011, under the terms of the pension plan. Peoples also provides post-retirement health and life insurance benefits to former employees and directors. Only those individuals who retired before January 27, 2012 were eligible for life insurance benefits. As of January 1, 2011, all retirees who desire to participate in Peoples medical plan do so by electing COBRA, which provides up to 18 months of coverage; retirees over the age of 65 also have the option to pay to participate in a group Medicare supplemental plan. Peoples’ policy is to fund the cost of the health benefits as they arise. The following tables detail the components of the net periodic cost for the plans: Pension Benefits Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Interest cost $ 104 $ 112 $ 314 $ 338 Expected return on plan assets (147 ) (138 ) (440 ) (415 ) Amortization of net loss 29 26 84 77 Settlement of benefit obligation 176 — — — Net periodic cost $ 162 $ — $ (42 ) $ — Postretirement Benefits Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Interest cost $ — $ 1 $ 2 $ 3 Amortization of net gain (1 ) (1 ) (4 ) (5 ) Net periodic cost $ (1 ) $ — $ (2 ) $ (2 ) Under US GAAP, Peoples is required to recognize a settlement gain or loss when the aggregate amount of lump-sum distributions to participants equals or exceeds the sum of the service and interest cost components of the net periodic pension cost. The amount of settlement gain or loss recognized is the pro rata amount of the unrealized gain or loss existing immediately prior to the settlement. In general, both the projected benefit obligation and the fair value of plan assets are required to be remeasured in order to determine the settlement gain or loss. During the third quarter 2018, the total lump-sum distributions made to participants caused the total settlements to exceed the recognition threshold for settlement gain or losses. As a result, Peoples recorded settlement charges of $176,000 in the three and nine months ended September 30, 2018 . There were no settlement charges recorded during the three or nine months ended September 30, 2017 under the noncontributory defined benefit pension plan. The following table summarizes the change in projected benefit obligation and funded status as a result of the remeasurement and the aggregate settlements for the three months ended September 30, 2018: As of September 30, 2018 (Dollars in thousands) December 31, Before Impact of After Funded status: 2017 Settlements Settlement Settlement Projected benefit obligation $ 12,991 $ 12,006 $ (510 ) $ 11,496 Fair value of plan assets 8,493 12,006 (510 ) 11,496 Funded status $ (4,498 ) $ — $ — $ — Gross unrealized loss $ 5,458 $ 4,196 $ 176 $ 4,020 Assumptions: Discount rate 3.40 % 4.00 % 4.00 % Expected return on plan assets 7.50 % 7.50 % 7.50 % In 2018, Peoples contributed $3.2 million to the defined benefit pension plan. This contribution was reported on the 2017 federal income tax return and recognized as a deduction for tax purposes at the 35% statutory federal corporate income tax rate.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The calculations of basic and diluted earnings per common share were as follows: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands, except per common share data) 2018 2017 2018 2017 Distributed earnings allocated to common shareholders $ 5,409 $ 3,972 $ 15,532 $ 11,184 Undistributed earnings allocated to common shareholders 7,246 6,865 16,638 18,134 Net earnings allocated to common shareholders $ 12,655 $ 10,837 $ 32,170 $ 29,318 Weighted-average common shares outstanding 19,325,457 18,056,202 18,875,290 18,043,692 Effect of potentially dilutive common shares 141,408 157,331 128,797 156,267 Total weighted-average diluted common shares outstanding 19,466,865 18,213,533 19,004,087 18,199,959 Earnings per common share: Basic $ 0.65 $ 0.60 $ 1.70 $ 1.62 Diluted $ 0.65 $ 0.60 $ 1.69 $ 1.61 Anti-dilutive shares excluded from calculation: Restricted shares, stock options and stock appreciation rights 5,541 163 2,193 270

Financial Instruments with Off-

Financial Instruments with Off- Balance Sheet Risk (Notes)	9 Months Ended
	Sep. 30, 2018
Financial Instruments with Off-Balance Sheet Risk [Abstract]
Financial Instruments Disclosure [Text Block]	Financial Instruments with Off-Balance Sheet Risk Derivatives and Hedging Activities - Risk Management Objective of Using Derivatives Peoples is exposed to certain risks arising from both its business operations and economic conditions. Peoples principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. Peoples manages economic risks, including interest rate, liquidity, and credit risks, primarily by managing the amount, sources, and duration of its assets and liabilities and through the use of derivative financial instruments. Specifically, Peoples enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known or expected cash amounts, the value of which are determined by interest rates. Peoples’ derivative financial instruments are used to manage differences in the amount, timing, and duration of Peoples' known or expected cash receipts and its known or expected cash payments principally related to certain variable rate borrowings. Peoples also has interest rate derivatives that result from a service provided to certain qualifying customers and, therefore, are not used to manage interest rate risk in Peoples' assets or liabilities. Peoples manages a matched book with respect to customer-related derivative financial instruments in order to minimize its net risk exposure resulting from such transactions. Fair Values of Derivative Instruments on the Balance Sheet Peoples' fair value of the derivative financial instruments was $ 8.8 million in an asset position and $ 4.9 million in a liability position at September 30, 2018 , and there was $ 4.6 million in an asset position and $ 3.2 million in a liability position at December 31, 2017 . The amounts are recorded in Other assets, and Accrued expenses and other liabilities on the Consolidated Balance Sheet at the date indicated. Cash Flow Hedges of Interest Rate Risk Peoples' objectives in using interest rate derivatives are to add stability to interest income and expense, and to manage its exposure to interest rate movements. To accomplish these objectives, Peoples has entered into interest rate swaps as part of its interest rate risk management strategy. These interest rate swaps are designated as cash flow hedges and involve the receipt of variable rate amounts from a counterparty in exchange for Peoples making fixed payments. Peoples acquired three interest rate swaps with the ASB acquisition in the second quarter of 2018, which had an aggregate notional value of $7.0 million , and all of which matured in July 2018. As of September 30, 2018 , Peoples had entered into twelve interest rate swap contracts, ten of which were effective with an aggregate notional value of $ 100.0 million . The remaining two became effective in October 2018 with an aggregate notional value of $10.0 million . Peoples will pay a fixed rate of interest for up to ten years while receiving a floating rate component of interest equal to the three-month LIBOR rate. The interest received on the floating rate component is intended to offset the rate on the rolling three-month FHLB advances. Amounts reported in accumulated other comprehensive loss ("AOCL"), related to derivatives will be reclassified to interest income or expense as interest payments are made or received on Peoples' variable-rate assets or liabilities. During the three and nine months ended September 30, 2018 , and September 30, 2017 , Peoples had minimal reclassifications to interest expense. During the next twelve months, Peoples estimates that minimal interest expense amount will be reclassified. For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of each derivative is reported in AOCL (outside of earnings), net of tax, and subsequently reclassified to earnings when the hedged transaction affects earnings, and the ineffective portion of changes in the fair value of the derivative is recognized directly in earnings. Peoples assesses the effectiveness of each hedging relationship by comparing the changes in cash flows of the derivative hedging instrument with the changes in cash flows of the designated hedged transaction. The reset dates and the payment dates on the 90-day advances used to fund the swaps are matched to the reset dates and payment dates on the receipt of the 3-month LIBOR floating portion of the swaps to ensure effectiveness of the cash flow hedge. Effectiveness is measured by ensuring that reset dates and payment dates are matched. The amount of accumulated other comprehensive pre-tax income for Peoples' cash flow hedges was $ 4.0 million at September 30, 2018 . There were no pre-tax net losses recorded for the nine months ended September 30, 2018 . Additionally, Peoples had no reclassifications to earnings in the three or nine months ended September 30, 2018 or September 30, 2017 . Non-Designated Hedges Peoples maintains an interest rate protection program for commercial loan customers, which was established in 2010. Under this program, Peoples provides its customer with a fixed-rate loan while creating a variable-rate asset for Peoples by the customer entering into an interest rate swap with Peoples on terms that match the loan. Peoples offsets its risk exposure by entering into an offsetting interest rate swap with an unaffiliated institution. These interest rate swaps do not qualify as designated hedges; therefore, each swap is accounted for as a standalone derivative. Peoples had interest rate swaps associated with commercial loans with an aggregate notional value of $ 449.3 million and fair value of $ 5.6 million of equally offsetting assets and liabilities at September 30, 2018 , and an aggregate notional value of $ 363.3 million and fair value of $ 3.0 million of equally offsetting assets and liabilities at December 31, 2017 . These interest rate swaps did not have a material impact on Peoples' results of operation or financial condition.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation Under the Peoples Bancorp Inc. Third Amended and Restated 2006 Equity Plan (the "2006 Equity Plan"), Peoples may grant, among other awards, nonqualified stock options, incentive stock options, restricted stock awards, stock appreciation rights ("SARs") and unrestricted share awards to employees and non-employee directors. The total number of common shares currently available under the 2006 Equity Plan is 891,340 . The maximum number of common shares that can be issued for incentive stock options is 500,000 common shares. Prior to 2007, Peoples granted nonqualified and incentive stock options to employees and nonqualified stock options to non-employee directors under the 2006 Equity Plan and predecessor plans. Since 2009, Peoples has granted restricted common shares to employees and restricted common shares to non-employee directors subject to the terms and conditions prescribed by the 2006 Equity Plan. In 2018, the Board of Directors granted unrestricted common shares to non-employee directors and to all full-time and part-time employees who did not already participate in the 2006 Equity Plan. In general, common shares issued in connection with stock-based awards are issued from treasury shares to the extent available. If no treasury shares are available, common shares are issued from authorized but unissued common shares. Stock Appreciation Rights SARs granted to employees have an exercise price equal to the fair market value of Peoples’ common shares on the date of grant and will be settled using common shares of Peoples. Additionally, the SARs granted to employees vested three years after the respective grant dates and expired ten years from the respective date of grant. The most recent grant of SARs occurred in 2008 and these SARs were exercised immediately prior to their expiration on February 20, 2018. The following table summarizes the changes to Peoples' SARs for the nine months ended September 30, 2018 : Number of Common Shares Subject to SARs Weighted- Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1 314 $ 23.77 Exercised 314 23.77 Outstanding at September 30 — $ — — $ — Exercisable at September 30 — $ — — $ — Restricted Common Shares Under the 2006 Equity Plan, Peoples may award restricted common shares to officers, key employees and non-employee directors. Beginning in 2018, common shares awarded to non-employee directors vest immediately upon grant with no restrictions. Restrictions on restricted common shares awarded to employees expire after periods ranging from one to three years . In the first nine months of 2018 , Peoples granted an aggregate of 84,876 restricted common shares subject to performance-based vesting to officers and key employees with restrictions that will lapse three years after the grant date provided that in order for the restricted common shares to vest in full, Peoples must have reported positive net income and maintained a well capitalized status by regulatory standards for each of the three fiscal years preceding the vesting date. During the first nine months of 2018 , Peoples granted, to certain key employees, an aggregate of 18,729 restricted common shares subject to time-based vesting with restrictions that will lapse after periods ranging from immediate grant date vesting to vesting three years after the grant date. The following table summarizes the changes to Peoples’ restricted common shares for the nine months ended September 30, 2018 : Time-Based Vesting Performance-Based Vesting Number of Common Shares Weighted-Average Grant Date Fair Value Number of Common Shares Weighted-Average Grant Date Fair Value Outstanding at January 1 33,082 $ 22.85 176,218 $ 25.50 Awarded 18,729 36.70 84,876 35.43 Released 7,000 24.49 83,311 23.62 Forfeited — — 1,961 34.39 Outstanding at September 30 44,811 $ 28.38 175,822 $ 31.09 For the nine months ended September 30, 2018 , the total intrinsic value for restricted common shares released was $ 3.2 million compared to $0.9 million for the nine months ended September 30, 2017 . Stock-Based Compensation Peoples recognizes stock-based compensation expense based on the estimated fair value of the awards on the grant date. The following table summarizes the amount of stock-based compensation expense and related tax benefit recognized for each period: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Total stock-based compensation expense $ 564 $ 351 $ 2,174 $ 1,362 Recognized tax benefit (119 ) (123 ) (457 ) (477 ) Net expense recognized $ 445 $ 228 $ 1,717 $ 885 Total unrecognized stock-based compensation expense related to unvested awards was $ 2.7 million at September 30, 2018 , which will be recognized over a weighted-average period of 1.9 years . On January 31, 2018, Peoples granted, to non-employee directors, an aggregate of 3,600 unrestricted common shares, which resulted in an additional $128,000 of stock-based compensation expense being recognized. On February 14, 2018, an aggregate of 11,112 unrestricted common shares were granted as a one-time special award to all full-time and part-time employees who did not already participate in the 2006 Equity Plan, which resulted in an additional $388,000 of stock-based compensation expense being recognized in the first quarter of 2018. Performance Unit Awards Under the 2006 Equity Plan, Peoples may award performance unit awards to officers, key employees and non-employee directors. On July 26, 2017, Peoples granted a total of seven performance unit awards to officers with a maximum aggregate dollar amount of $1.3 million represented by the performance units subject to such awards, with each performance unit representing $1.00. The performance unit awards granted are for the performance period beginning January 1, 2018 and ending on December 31, 2019, and will be subject to two performance goals. Twenty-five percent of the performance units subject to each award will vest if, but only if, the related target performance goal is achieved. The remaining 75% of the performance units subject to each award will vest based on the relative performance (measured by percentile ranking) with respect to the related maximum performance goal. If for the performance period, the target level of achievement for the first performance goal and/or the maximum level of achievement for the second performance goal is not reached, the dollar amount represented by the performance units associated with each performance goal will be adjusted to reflect the level of performance achieved. After the vesting date, the participant will receive that number of common shares of Peoples equal to (i) the aggregate number of participant's performance units (and dollar value of such performance units) that vested based on the performance achieved under both performance goals (ii) divided by the fair market value of a common share of Peoples on the date of such vesting and rounded down to the nearest whole common share.

Revenue (Notes)

Revenue (Notes)	9 Months Ended
	Sep. 30, 2018
Revenue Recognition and Deferred Revenue [Abstract]
Revenue from Contract with Customer [Text Block]	Revenue As of January 1, 2018, Peoples adopted ASU 2014-09 - Revenue from Contracts with Customers (Topic 606), and all subsequent updates that modified ASC 606. Peoples elected to adopt this new accounting guidance using the modified retrospective approach. The modified retrospective approach uses a cumulative-effect adjustment to retained earnings to reflect uncompleted contracts in the initial application of the guidance. As of January 1, 2018, Peoples recorded a cumulative-effect adjustment for uncompleted contracts, which resulted in a reduction to Retained earnings and an increase in Accrued expenses and other liabilities of $3.1 million , which is net of federal income taxes. The impact during the third quarter of 2018 was an increase in insurance income and a decrease in retained earnings of $101,000 as a result of applying ASC 606. During the first nine months of 2018 , the impact of ASC 606 resulted in an increase in insurance income and a decrease in retained earnings of $146,000 . Prior period amounts are not adjusted and continue to be reported under the accounting standards in effect for those respective periods. Peoples recognizes revenues as they are earned based on contractual terms, or as services are provided and collectability is reasonably assured. Estimates of variable consideration are included in revenue to the extent that it is probable that a significant reversal of cumulative revenue will not occur, once the uncertainty is resolved. Peoples contracts with customers are short-term in nature, and are recognized under the following revenue streams: Insurance Income: Insurance income generally consists of commissions and fees from the sale of insurance policies, third-party administration services and performance-based commissions from insurance companies. Peoples recognizes commission income from the sale of insurance policies when it acts as an agent between the insurance carrier and policyholder, arranging for the insurance carrier to provide policies to policyholders, and acts on behalf of the insurance carrier by providing customer service to the policyholders during the respective policy periods. Commission income is recognized over time, using the output method of time elapsed, which corresponds with the underlying insurance policy period, for which Peoples is obligated to perform under contract with the insurance carrier. Commission income is variable, as it is comprised of a certain percentage of the underlying policy premium. Peoples estimates the variable consideration based upon the "most likely amount" method, and does not expect or anticipate a significant reversal of revenue in future periods, based upon historical experience. Payment is due from the insurance carrier for commission income once the insurance policy has been sold. Peoples has elected to apply a practical expedient related to capitalizable costs, which are the commissions paid to insurance producers, and will expense these commissions paid to insurance producers as incurred, as these costs are related to the commission income and would have been amortized within one year or less if they had been capitalized, the same period over which the commission income was earned. Fees related to third-party administration services performed are recognized over time, during the period in which services have been provided, and are recognized monthly in the month the services were performed. Performance-based commissions from insurance companies are recognized at a point in time, when received, and no contingencies remain. Trust and Investment Income: Trust and investment income consists of revenue from fiduciary and brokerage activities, which includes fees for services such as asset management, record keeping, retirement services and estate management, and investment commissions and fees related to the sale of investments. Trust and investment income is recognized over time which reflects the duration of the contract period for which services have been provided. Trust and investment income is variable as it is based on the value of assets under administration and management, and specific transactions. Peoples estimates the variable consideration based upon the most likely amount method, and does not expect or anticipate a significant reversal of revenue in future periods. Payment is due from the customer when billed, which is typically a monthly or quarterly billing for services rendered in the most recent period, for which the performance obligation has been satisfied. Peoples has elected to apply a practical expedient of right to invoice when recognizing trust and investment income, as Peoples has fulfilled the performance obligation, the customer has consumed the service, and Peoples has a right to the related income. Peoples has also elected to apply a practical expedient related to capitalizable costs, which are the commissions paid to financial advisors, and will expense these commissions paid to financial advisors as incurred, as these costs are related to the trust and investment income and would have been amortized within one year or less if they had been capitalized, the same period over which the income was earned. Electronic Banking Income: Electronic banking income consists of two revenue streams related to interchange income and promotional and usage income. Peoples recognizes interchange income over time, on a monthly basis, which is based on the transactional volume of debit card activity completed by its customers during the month in which income is recognized. Peoples is obligated to certain debit card activity being performed by its customers over a certain period of time. Interchange income is variable as it is based on the transaction volume of debit card activity completed by Peoples' customers. Peoples estimates the variable consideration based upon the most likely amount method, and does not expect or anticipate a significant reversal of revenue in future periods. Payment is due from the vendor within one month of the completed customer debit card activity. Peoples has elected to apply a practical expedient of right to invoice when recognizing interchange income, as Peoples has fulfilled the required performance obligations, the vendor has consumed the service, and Peoples has a right to the related income. Peoples also recognizes promotional and usage income over time, on a monthly basis, which is related to branding of debit cards and promotion or use of certain services provided by third-party vendors. Peoples is obligated to brand its debit cards in a certain manner, and promote and use services provided by third-party vendors. Promotional and usage income is variable as it is based on certain metrics achieved for promotion and usage of services provided by the third-party vendors. Peoples estimates the variable consideration based upon the most likely amount method, and does not expect or anticipate a significant reversal of revenue in future periods. Payment is due from the third-party vendors within 45 days of the monthly fulfillment of Peoples' performance obligation. Peoples has elected to apply a practical expedient of right to invoice when recognizing promotional and usage income, as Peoples has fulfilled the required performance obligations, the vendor has consumed the service, and Peoples has a right to the related income. Deposit Account Service Charges: Deposit account service charges consist of two revenue streams related to ongoing maintenance fees for deposit accounts and certain transactional-based fees. Ongoing maintenance fees are recognized on a monthly basis, generally with the monthly period beginning on the day of the month on which the account was opened. Ongoing maintenance fee income is variable as these fees can be reduced if a customer meets certain qualifying metrics. Peoples estimates the variable consideration based upon the most likely amount method, and does not expect or anticipate a significant reversal of revenue in future periods. For accounts that are assessed maintenance fees through the account analysis process, payment is due from the customer within one month of the monthly period in which the account was open. For all other accounts, monthly maintenance fees are assessed to the account on the last day of the monthly period. Peoples has elected to apply a practical expedient of right to invoice when recognizing ongoing maintenance fees for deposit accounts, as Peoples has fulfilled the required performance obligations, the customer has consumed the service, and Peoples has a right to the related income. Transactional-based deposit account fees are recognized at a point in time, which is at the completion of the relevant transaction. Peoples is obligated to perform certain transactions as requested by its consumer and business deposit account customers, which are outside of the normal maintenance requirements. Transactional-based deposit account fee income is variable as these fees are directly related to a service request from the customer. Peoples estimates the variable consideration based upon the most likely amount method, and does not expect or anticipate a significant reversal of revenue in future periods. Payment is due from the customer at the time of completion of the requested transaction. Commercial Loan Swap Fees: Commercial loan swap fees consist of income related to transactions in which Peoples acts as an agent between a third-party vendor and certain Peoples commercial loan customers for which an interest rate swap occurs. Commercial loan swap fees are recognized at a point in time, when the transaction has been completed, and there is no recourse or further performance obligation required of Peoples. Commercial loan swap fee income is variable as these fees are a certain percentage of the total swap fee collected on a completed transaction. Peoples estimates the variable consideration based upon the most likely amount method, and does not expect or anticipate a significant reversal of revenue in future periods. Payment is due from the customer at the time of completion of the requested transaction. Other Non-Interest Income: Other non-interest income includes certain revenues that are transactional-based, such as wire transfer fees, money order fees and other ancillary fees or services. These transactional-based fees are recognized as income at a point in time, at the completion of the relevant transaction. Transactional-based other non-interest income is variable as these fees are directly related to a service request from the customer. Peoples estimates the variable consideration based upon the most likely amount method, and does not expect or anticipate a significant reversal of revenue in future periods. Payment is due from the customer at the time of completion of the requested transaction. The following table details Peoples' revenue from contracts with customers for the three and nine months ended September 30, 2018 : Three Months Ended Nine Months Ended (Dollars in thousands) September 30, 2018 September 30, 2018 Insurance income: Commission and fees from sale of insurance policies (a) $ 3,159 $ 9,541 Fees related to third-party administration services (a) 131 423 Performance-based commissions (b) 98 1,448 Trust and investment income (a) 3,110 9,410 Electronic banking income: Interchange income (a) 2,464 7,248 Promotional and usage income (a) 426 1,212 Deposit account service charges: Ongoing maintenance fees for deposit accounts (a) 691 2,012 Transactional-based fees (b) 1,961 5,148 Commercial loan swap fees (b) 355 617 Other non-interest income transactional-based fees (b) 228 772 Total $ 12,623 $ 37,831 Timing of revenue recognition: Services transferred over time $ 9,981 $ 29,846 Services transferred at a point in time 2,642 7,985 Total $ 12,623 $ 37,831 (a) Services transferred over time. (b) Services transferred at a point in time. Peoples records contract liabilities for payments received for commission income related to the sale of insurance policies, for which the performance obligations have not yet been fulfilled. The contract liabilities are recognized as income over time, during the period in which the performance obligations are fulfilled, which is over the insurance policy period. The following table details the change in Peoples' contract liabilities for the period ended September 30, 2018 : Contract Liabilities (Dollars in thousands) Balance, January 1, 2018 (a) $ 4,700 Additional deferred income 4,362 Recognition of income previously deferred (4,508 ) Balance, September 30, 2018 $ 4,554 (a) The amount of $3.1 million reported elsewhere throughout this Form 10-Q is the $4.7 million noted above, net of federal corporate income taxes. The following table details the impact of the adoption of ASU 2014-09 to Peoples' Consolidated Statements of Income and Balance Sheets, compared to amounts that would have been recognized under previous guidance: At or For the Three Months Ended At or For the Nine Months Ended September 30, 2018 September 30, 2018 (Dollars in thousands) As Reported Impact of ASC 606 Amounts Recognized Under Previous Guidance As Reported Impact of ASC 606 Amounts Recognized Under Previous Guidance Non-interest income: Insurance income $ 3,388 $ 101 $ 3,287 $ 11,412 $ 146 $ 11,266 Liabilities: Accrued expenses and other liabilities 49,747 2,940 46,807 49,747 2,940 46,807 Stockholders' equity: Retained earnings 152,976 (2,940 ) 155,916 152,976 (2,940 ) 155,916

Acquisitions (Notes)

Acquisitions (Notes)	9 Months Ended
	Sep. 30, 2018
Acquisitions [Abstract]
Business Combination Disclosure [Text Block]	Acquisitions On October 29, 2018, Peoples entered into an Agreement and Plan of Merger (The "First Prestonsburg Merger Agreement") with First Prestonsburg Bancshares Inc. ("First Prestonsburg"), that calls for First Prestonsburg to merge into Peoples (the "Merger"). First Prestonsburg is the parent company of First Commonwealth Bank of Prestonsburg, Inc. ("First Commonwealth"), which operates eight full service branches located in eastern Kentucky, with an additional branch to open by the end of 2018. First Commonwealth will merge into Peoples Bank following the merger of First Prestonsburg into Peoples. The merger transactions are expected to close during the second quarter of 2019, subject to the satisfaction of customary closing conditions, including receipt of applicable regulatory approvals and the approval of the shareholders of First Prestonsburg. As of September 30, 2018, First Prestonsburg had, on a consolidated basis, approximately $310 million in total assets, which included approximately $139 million in total loans, and approximately $244 million in total deposits. Under the terms of the First Prestonsburg Merger Agreement, shareholders of First Prestonsburg will receive 12.512 Peoples' common shares for each share of First Prestonsburg common stock. In addition, immediately prior to the closing of the Merger, First Prestonsburg will pay a special aggregate cash distribution of $11.275 million to its shareholders based upon the twenty day volume-weighted average closing price of Peoples' common stock through October 26, 2018. The stock consideration plus the special dividend have a combined transaction value of $45.4 million to the holders of First Prestonsburg's common stock. On April 13, 2018, Peoples completed its acquisition of ASB for total consideration of $41.5 million , which reflected the conversion of each of the 1,979,034 outstanding ASB common shares into $20.00 in cash or 0.592 in Peoples' common shares. ASB merged into Peoples, and ASB's wholly-owned subsidiary, American Savings Bank, fsb, which operated seven full-service branches in southern Ohio and northern Kentucky, merged into Peoples Bank. Per the applicable accounting guidance for business combinations, the acquisition date fair values of the assets purchased, liabilities assumed and related identifiable intangible assets are preliminary and subject to refinement for up to one year after the closing date of the acquisition as additional information relative to closing date fair values becomes available. The following table provides the preliminary purchase price calculation as of the date of acquisition for the ASB acquisition, and the assets acquired and liabilities assumed at their estimated fair values. (Dollars in thousands, except per share data) ASB Purchase Price Common shares electing cash consideration 31,763 Cash purchase price per share $ 20.00 Cash consideration $ 635 Common shares electing stock consideration 1,947,271 Number of common shares of Peoples issued for each common share of acquired company 0.592 Price per Peoples common share, based on closing date $ 35.48 Common share consideration $ 40,898 Cash in lieu of fractional common shares of Peoples $ 2 Total consideration $ 41,535 Net Assets at Fair Value Assets Total cash and cash equivalents $ 5,332 Available-for-sale investment securities 18,155 Held-to-maturity investment securities 649 Other investment securities 1,596 Total investment securities 20,400 Loans, net of deferred fees and costs 236,628 Loans held for sale 2,539 Net loans 239,167 Bank premises and equipment, net of accumulated depreciation 3,320 Bank owned life insurance 4,803 Other intangible assets 2,639 Other assets 3,481 Total assets $ 279,142 Liabilities Deposits: Non-interest-bearing $ 29,487 Interest-bearing 169,142 Total deposits 198,629 Short-term borrowings 54,824 Accrued expenses and other liabilities 2,716 Total liabilities $ 256,169 Net assets $ 22,973 Goodwill $ 18,562 The estimated fair values presented in the above table reflect additional information that was obtained during the three months ended September 30, 2018, which resulted in changes to certain fair value estimates made as of the date of acquisition. Adjustments to acquisition date estimated fair values are recorded during the period in which they occur and, as a result, previously recorded results have changed. After considering the additional information, the estimated fair value of loans decreased $ 481,000 ; bank premises and equipment, net of accumulated depreciation, increased $355,000 ; other assets increased $34,000 ; and accrued expenses and other liabilities increased $158,000 , in each case from balances reported as of June 30, 2018. These revised fair value estimates resulted in a net increase to goodwill of $250,000 from $18.3 million reported as of June 30, 2018, to $18.6 million which was recognized in the September 30, 2018 Consolidated Balance Sheet. Acquired loans are reported net of the unamortized fair value adjustment. The following table details the preliminary fair value adjustment for acquired loans as of the acquisition date: (Dollars in thousands, except per share data) ASB Nonimpaired Loans Contractual cash flows $ 342,087 Nonaccretable difference 59,967 Expected cash flows 282,120 Accretable yield 54,029 Fair value $ 228,091 Credit Impaired Loans Contractual cash flows $ 19,031 Nonaccretable difference 5,908 Expected cash flows 13,123 Accretable yield 2,047 Fair value $ 11,076 Peoples recorded non-interest expense related to acquisitions of $ 675,000 and $6.9 million for the three and nine months ended September 30, 2018 , respectively. Total non-interest income declined due to losses of $ 203,000 associated with the ASB acquisition. Salaries and employee benefit costs contained $ 466,000 and $2.4 million , for the three and nine months ended September 30, 2018 , respectively, related to change in control agreements, retention and severance bonuses, and regular payroll and taxes after conversion. Professional fees contained $ 31,000 and $ 742,000 for the three and nine months ended September 30, 2018 , respectively. Data processing expenses contained none and $59,000 for the three and nine months ended September 30, 2018. Marketing expense included $16,000 and $107,000 for the three and nine months ended September 30, 2018, respectively, and other non-interest expense contained $ 162,000 and $3.6 million for the three and nine months ended September 30, 2018 , respectively.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements: From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB") or other standard setting bodies that are adopted by Peoples as of the required effective dates. Accounting Standards Update ("ASU") 2018-14 - Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20): This update modifies the disclosure requirements for employees that sponsor defined benefit pension or other postretirement plans. This update will remove some current disclosure requirements and require an explanation of the reasons for significant gains and losses related to changes in the benefit obligation, the projected benefit obligation and fair value of plan assets for plans with projected benefit obligations in excess of plan assets, and the accumulated benefit obligation and fair value of plan assets for plans with accumulated benefit obligations in excess of plan assets. This ASU will become effective for interim and annual reporting periods beginning after December 15, 2020 (effective January 1, 2021 for Peoples). Peoples is currently reviewing this update and will adopt this new accounting guidance as required. This new accounting guidance is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-13 - Fair Value Measurement (Topic 820): The amendment in this update modify the disclosure requirements for fair value measurements. The amendment removes, modifies and adds to required disclosures related to certain fair value measurements. This ASU will become effective for interim and annual reporting periods beginning after December 15, 2019 (effective January 1, 2020 for Peoples). Peoples is currently reviewing the impact of this update and will adopt this new accounting guidance as required. This new accounting guidance is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2016-02 - Leases (Topic 842): There are aspects of this new accounting guidance that are still being interpreted and the FASB has issued updates to certain aspects of the guidance to address implementation issues. The FASB issued an update in January 2018 (ASU 2018-01) and two in July of 2018 (ASU 2018-10 and 2018-11), which are to provide transparency and comparability and clarify several areas of the guidance. ASU 2018-01 provides an optional transition practical expedient to not evaluate land easements that exist or expired before the entity's adoption of Topic 842, and were not previously accounted for as leases. ASU 2018-10 provides several areas of improvement and clarification to the original standard, including: • optional practical expedient that affects entities with land easements that existed or expired before the adoption, • a rate implicit in the lease of zero should be used when applying the definition, • requirements about lease classification reassessments related to modified terms and conditions, • accounting for the exercise by a lessee of an option to extend or terminate the lease or to purchase, • re-measurement of variable lease payments using the index or rate at the measurement date, • period covered by a lessor-only option to terminate the lease is included in the lease term, • operating leases acquired as part of a previous business combination classified as direct financing leases or sales-type leases, • adjustments to earnings rather than equity when applying retrospectively to prior reporting period, and • determining loss allowance of the net investment in the lease, including cash flow. ASU 2018-11 addresses comparative reporting at adoption, including an option to apply the new lease standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. It also includes the options of separating components of lease contracts, accounting for non-lease components with the lease if the lease is classified as an operating lease and the timing of components are the same. Under ASU 2016-02 and the related updates, a lessee will be required to recognize assets and liabilities for leases with terms of more than 12 months. These ASUs will become effective for interim and annual reporting periods affected beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples is currently identifying the population of leases that will be impacted by ASU 2016-02, and assessing the impact of the guidance provided in the subsequent updates, and will adopt this new accounting guidance as required. Peoples expects to recognize a one-time cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the new standard is effective. This new accounting guidance is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-09 - Codification Improvements: This update has been issued to address suggestions received from stakeholders on the Codification and to make other incremental improvements to GAAP. The improvements facilitate Codification updates for technical corrections, clarifications, and other minor improvements. The amendments in this update that do not require transition guidance became effective upon issuance of this update and did not have an impact on Peoples' consolidated financial statements. Many of the amendments in this update do have transition guidance with effective dates for annual periods beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples will adopt this new accounting guidance as required, and it is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-07 - Compensation - Stock Compensation (Topic 718): This update has been issued as part of a simplification initiative which will expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from non-employees and improve aspects of the accounting for non-employee share-based payment transactions. The amendments will be effective for interim and annual reporting periods beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples will adopt this new accounting guidance as required, and it is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2018-06 - Codification Improvements (Topic 942): This update has been issued to increase stakeholders' awareness of the improvements to Topic 942, Financial Services - Depository and Lending. This update supersedes outdated guidance related to the Office of the Comptroller of the Currency's Banking Circular 202, Accounting for Net Deferred Tax Charges. The amendments became effective May 7, 2018, and did not have an impact on Peoples' consolidated financial statements. ASU 2018-05 - Income Taxes (Topic 740): The amendments in this ASU clarify required disclosures in situations where a registrant does not have the necessary information available, prepared, or analyzed in reasonable detail to complete the accounting under ASC 740 for certain income tax effects of the Tax Cuts and Jobs Act for the reporting period. As of December 31, 2017, Peoples partially completed the accounting for the income tax effects of the enactment of the Tax Cuts and Jobs Act; however, in certain cases, Peoples made reasonable estimates of the effects of a reduced federal corporate income tax rate on its existing deferred tax balances. In other cases, Peoples has not been able to make a reasonable estimate and continued to account for those items based on its existing accounting under ASC 740, and the provisions of the tax laws that were in effect immediately prior to enactment of the Tax Cuts and Jobs Act. In all cases, Peoples will continue to make and refine its calculations during the one-year re-measurement period permitted under this ASU as additional analysis is completed. In addition, these estimates may be affected as Peoples gains a more thorough understanding of the new tax reform legislation. ASU 2018-02 - Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Peoples early adopted ASU 2018-02, reclassifying income tax effects of the Tax Cuts and Jobs Act of $0.9 million from accumulated other comprehensive loss to retained earnings as of December 31, 2017. ASU 2017-12 - Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The objective of the amendments in this ASU is to better align an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships, and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components, and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. The FASB issued an update in October of 2018, providing an eligible U.S. benchmark interest rate for purposes of applying hedge accounting. The amendments will be effective for interim and annual reporting periods beginning after December 15, 2018 (effective January 1, 2019 for Peoples). Peoples will adopt this new accounting guidance as required, and it is not expected to have a material impact on Peoples' consolidated financial statements. ASU 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This accounting guidance replaces the current “incurred loss” model for recognizing credit losses with an “expected loss” model, referred to as the Current Expected Credit Loss (“CECL”) model. Under the CECL model, Peoples will be required to present certain financial assets carried at amortized cost, such as loans held-for-investment and held-to-maturity debt securities, at the net amount expected to be collected. The measurement of expected credit losses is to be based on information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. This measurement will take place at the time the financial asset is first added to the balance sheet and periodically thereafter. This differs significantly from the “incurred loss” model required under current US GAAP, which delays recognition until it is probable a loss has been incurred. Accordingly, Peoples expects that the adoption of the CECL model will materially affect how the allowance for loan losses is determined and could require significant increases to the allowance for loan losses. Moreover, the CECL model may create more volatility in the level of Peoples' allowance for loan losses. If required to materially increase the level of allowance for loan losses for any reason, such increase could adversely affect Peoples' business, financial condition and results of operations. The new CECL standard will become effective for interim and annual reporting periods beginning after December 15, 2019 (effective January 1, 2020 for Peoples). Peoples continues to make progress on the design and development of estimation methodologies, current and future data requirements, and is in the process of implementing a technological solution to assist in the future calculations under the new methodology. Peoples is currently evaluating the impact that the CECL model will have on Peoples' financial statements and expects to recognize a one-time cumulative-effect adjustment to the allowance for loan loss provision as of the beginning of the first reporting period in which the new standard is effective, consistent with regulatory expectations set forth in interagency guidance issued at the end of 2016. Peoples believes that the adoption of the standard will result in an overall increase in the allowance for loan losses; however, the magnitude of the increase at adoption will depend on relevant data at the adoption date, including the characteristics of the loan portfolio, macroeconomic conditions and forecasts. Peoples has not yet determined the magnitude of any such one-time cumulative-effect adjustment or of the overall impact of the new standard on Peoples' financial condition or results of operations.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on a Recurring Basis	Recurring Fair Value Measurements at Reporting Date September 30, 2018 December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets: Available-for-sale investment securities: Obligations of: States and political subdivisions $ — $ 93,790 $ — $ — $ 101,569 $ — Residential mortgage-backed securities — 688,656 — — 673,664 — Commercial mortgage-backed securities — 6,713 — — 6,976 — Bank-issued trust preferred securities — 4,166 — — 5,129 — Equity investment securities (a) — — — 7,694 155 — Total available-for-sale securities — 793,325 — 7,694 787,493 — Held-to-maturity investment securities: Obligations of: States and political subdivisions $ — $ 4,889 $ — $ — $ 4,417 $ — Residential mortgage-backed securities — 28,718 — — 32,227 — Commercial mortgage-backed securities — 3,488 — — 4,569 — Total held-to-maturity securities — 37,095 — — 41,213 — Equity investment securities (a) 104 174 — — — — Loans held for sale — 4,776 — — 2,510 — Derivative assets (b) — 8,766 — — 4,594 — Liabilities: Derivative liabilities (c) $ — $ 4,871 $ — $ — $ 3,241 $ — (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securities. As of December 31, 2017, equity investment securities had a net unrealized gain of $6.5 million . (b) Included in Other assets on the Consolidated Balance Sheets. For additional information, see Note 9 of the Notes to the Unaudited Consolidated Financial Statements. (c) Included in Other liabilities on the Consolidated Balance Sheets. For additional information, see Note 9 of the Notes to the Unaudited Consolidated Financial Statements.
Fair Value Measurements, Nonrecurring [Table Text Block]	The following table provides the fair value for each class of assets and liabilities required to be measured and reported at fair value on a non-recurring basis on the Consolidated Balance Sheets by level in the fair value hierarchy. Non-Recurring Fair Value Measurements at Reporting Date September 30, 2018 December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Impaired loans $ — $ — $ 25,038 $ — $ — $ 20,602 Other real estate owned (OREO) — — 106 — — 208
Fair Values of Financial Assets and Liabilities on Balance Sheets	Fair Value Measurements of Other Financial Instruments (Dollars in thousands) Fair Value Hierarchy Level September 30, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Assets: Cash and cash equivalents 1 $ 95,173 $ 95,173 $ 72,194 $ 72,194 Other investment securities: Federal Home Loan Bank ("FHLB") stock 2 29,368 29,368 28,132 28,132 Federal Reserve Bank ("FRB") stock 2 12,294 12,294 10,179 10,179 Nonqualified deferred compensation (a) 2 1,044 1,044 — — Federal Home Loan Mortgage Corp ("FHLMC") stock 2 60 60 60 60 Total other investment securities 42,766 42,766 38,371 38,371 Loans, net of deferred fees and costs 3 2,687,848 2,780,292 2,338,344 2,274,194 Bank owned life insurance 3 68,439 68,439 62,176 62,176 Bank premises and equipment, net of accumulated depreciation 3 57,527 57,527 52,510 52,510 Servicing rights (b) 3 2,682 2,682 2,305 2,305 Liabilities: Deposits 2 $ 3,041,123 $ 3,029,072 $ 2,730,330 $ 2,730,071 Short-term borrowings 2 296,830 295,542 209,491 209,628 Long-term borrowings 2 111,099 101,779 144,019 142,108 (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities (including those held in participant accounts in the Peoples Bancorp Inc. Nonqualified Deferred Compensation Plan) from available-for-sale investment securities to other investment securities. (b) Included in Other intangible assets on the Consolidated Balance Sheets. Servicing rights are carried at the lower of cost or market value.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2018
Investment Holdings [Line Items]
Summary of Available-for-sale Investment Securities	The following table summarizes Peoples' available-for-sale investment securities: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2018 Obligations of: States and political subdivisions $ 94,014 $ 585 $ (809 ) $ 93,790 Residential mortgage-backed securities 714,360 1,558 (27,262 ) 688,656 Commercial mortgage-backed securities 6,861 — (148 ) 6,713 Bank-issued trust preferred securities 4,196 132 (162 ) 4,166 Total available-for-sale securities $ 819,431 $ 2,275 $ (28,381 ) $ 793,325 December 31, 2017 Obligations of: States and political subdivisions $ 100,039 $ 1,786 $ (256 ) $ 101,569 Residential mortgage-backed securities 684,100 2,582 (13,018 ) 673,664 Commercial mortgage-backed securities 7,004 11 (39 ) 6,976 Bank-issued trust preferred securities 5,195 141 (207 ) 5,129 Equity investment securities (a) 1,394 6,520 (65 ) 7,849 Total available-for-sale securities $ 797,732 $ 11,040 $ (13,585 ) $ 795,187 (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securities.
Schedule of Gross Gains and Losses from Sales of Available-for-sale Securities	The gross gains and gross losses realized by Peoples from sales of available-for-sale securities for the periods ended September 30 were as follows: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Gross gains realized $ — $ 1,877 $ 5 $ 2,235 Gross losses realized — 16 151 16 Net gain (loss) realized $ — $ 1,861 $ (146 ) $ 2,219
Summary of Available-for-sale Securities with Unrealized Loss	The following table presents a summary of available-for-sale investment securities that had an unrealized loss: Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss September 30, 2018 Obligations of: States and political subdivisions $ 30,112 $ 224 52 $ 9,480 $ 585 6 $ 39,592 $ 809 Residential mortgage-backed securities 224,049 5,503 113 405,124 21,759 128 629,173 27,262 Commercial mortgage-backed securities 3,127 44 1 3,587 104 2 6,714 148 Bank-issued trust preferred securities — — — 1,838 162 2 1,838 162 Total $ 257,288 $ 5,771 166 $ 420,029 $ 22,610 138 $ 677,317 $ 28,381 December 31, 2017 Obligations of: States and political subdivisions $ 16,985 $ 89 18 $ 5,308 $ 167 1 $ 22,293 $ 256 Residential mortgage-backed securities 274,998 3,462 77 291,812 9,556 88 566,810 13,018 Commercial mortgage-backed securities 2,487 23 1 1,274 16 1 3,761 39 Bank-issued trust preferred securities — — — 2,792 207 3 2,792 207 Equity investment securities (a) 276 1 1 112 64 1 388 65 Total $ 294,746 $ 3,575 97 $ 301,298 $ 10,010 94 $ 596,044 $ 13,585 (a) As of January 1, 2018, Peoples adopted ASU 2016-01, resulting in the reclassification of equity investment securities from available-for-sale investment securities to other investment securities.
Summary of Held-to-maturity Investment Securities	The following table summarizes Peoples’ held-to-maturity investment securities: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value September 30, 2018 Obligations of: States and political subdivisions $ 4,451 $ 438 $ — $ 4,889 Residential mortgage-backed securities 29,765 79 (1,126 ) 28,718 Commercial mortgage-backed securities 3,574 — (86 ) 3,488 Total held-to-maturity securities $ 37,790 $ 517 $ (1,212 ) $ 37,095 December 31, 2017 Obligations of: States and political subdivisions $ 3,810 $ 607 $ — $ 4,417 Residential mortgage-backed securities 32,487 269 (529 ) 32,227 Commercial mortgage-backed securities 4,631 — (62 ) 4,569 Total held-to-maturity securities $ 40,928 $ 876 $ (591 ) $ 41,213
Cost-method Investments, Description [Text Block]	The following table summarizes the carrying value of Peoples' other investment securities: (Dollars in thousands) September 30, 2018 December 31, 2017 FHLB stock $ 29,368 $ 28,132 FRB stock 12,294 10,179 Equity investment securities (a) 278 — Other 1,104 60 Total other investment securities $ 43,044 $ 38,371
Available-for-sale securities
Investment Holdings [Line Items]
Summary of Investment Securities by Contractual Maturity	The table below presents the amortized cost, fair value and total weighted-average yield of available-for-sale securities by contractual maturity at September 30, 2018 . The weighted-average yields are based on the amortized cost. In some cases, the issuers may have the right to call or prepay obligations without call or prepayment penalties prior to the contractual maturity date. (Dollars in thousands) Within 1 Year 1 to 5 Years 5 to 10 Years Over 10 Years Total Amortized cost Obligations of: States and political subdivisions $ 714 $ 12,538 $ 26,289 $ 54,473 $ 94,014 Residential mortgage-backed securities 994 12,898 46,292 654,176 714,360 Commercial mortgage-backed securities — 5,678 — 1,183 6,861 Bank-issued trust preferred securities — — 4,196 — 4,196 Total available-for-sale securities $ 1,708 $ 31,114 $ 76,777 $ 709,832 $ 819,431 Fair value Obligations of: States and political subdivisions $ 713 $ 12,489 $ 26,184 $ 54,404 $ 93,790 Residential mortgage-backed securities 990 12,590 44,656 630,420 688,656 Commercial mortgage-backed securities — 5,548 — 1,165 6,713 Bank-issued trust preferred securities — — 4,166 — 4,166 Total available-for-sale securities $ 1,703 $ 30,627 $ 75,006 $ 685,989 $ 793,325 Total weighted-average yield 2.52 % 2.78 % 3.38 % 2.84 % 2.88 %
Held-to-maturity securities
Investment Holdings [Line Items]
Summary of Investment Securities by Contractual Maturity	The table below presents the amortized cost, fair value and total weighted-average yield of held-to-maturity securities by contractual maturity at September 30, 2018 . The weighted-average yields are based on the amortized cost. In some cases, the issuers may have the right to call or prepay obligations without call or prepayment penalties prior to the contractual maturity date. (Dollars in thousands) Within 1 Year 1 to 5 Years 5 to 10 Years Over 10 Years Total Amortized cost Obligations of: States and political subdivisions $ — $ 309 $ 2,982 $ 1,160 $ 4,451 Residential mortgage-backed securities — 428 8,060 21,277 29,765 Commercial mortgage-backed securities — — — 3,574 3,574 Total held-to-maturity securities $ — $ 737 $ 11,042 $ 26,011 $ 37,790 Fair value Obligations of: States and political subdivisions $ — $ 309 $ 3,410 $ 1,170 $ 4,889 Residential mortgage-backed securities — 415 8,028 20,275 28,718 Commercial mortgage-backed securities — — — 3,488 3,488 Total held-to-maturity securities $ — $ 724 $ 11,438 $ 24,933 $ 37,095 Total weighted-average yield — % 2.97 % 3.08 % 2.70 % 2.82 %
Summary of Held-to-maturity Securities with Unrealized Loss	The following table presents a summary of held-to-maturity investment securities that had an unrealized loss: Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss No. of Securities Fair Value Unrealized Loss September 30, 2018 Residential mortgage-backed securities $ 11,826 $ 182 6 $ 11,260 $ 944 3 $ 23,086 $ 1,126 Commercial mortgage-backed securities — — — 3,488 86 1 3,488 86 Total $ 11,826 $ 182 6 $ 14,748 $ 1,030 4 $ 26,574 $ 1,212 December 31, 2017 Residential mortgage-backed securities $ 1,476 $ 4 2 $ 12,098 $ 525 3 $ 13,574 $ 529 Commercial mortgage-backed securities — — — 4,569 62 1 4,569 62 Total $ 1,476 $ 4 2 $ 16,667 $ 587 4 $ 18,143 $ 591

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Schedule of Financing Receivables, Type	The major classifications of loan balances (in each case, net of deferred fees and costs) excluding loans held for sale, were as follows: (Dollars in thousands) September 30, December 31, 2017 Originated loans: Commercial real estate, construction $ 103,562 $ 107,118 Commercial real estate, other 630,720 595,447 Commercial real estate 734,282 702,565 Commercial and industrial 510,591 438,051 Residential real estate 299,768 304,523 Home equity lines of credit 92,892 88,902 Consumer, indirect 396,701 340,390 Consumer, direct 72,601 67,010 Consumer 469,302 407,400 Deposit account overdrafts 649 849 Total originated loans $ 2,107,484 $ 1,942,290 Acquired loans: Commercial real estate, construction $ 13,050 $ 8,319 Commercial real estate, other 191,993 165,120 Commercial real estate 205,043 173,439 Commercial and industrial 41,188 34,493 Residential real estate 308,178 184,864 Home equity lines of credit 42,961 20,575 Consumer, indirect 161 329 Consumer, direct 2,712 1,147 Consumer 2,873 1,476 Total acquired loans $ 600,243 $ 414,847 Loans, net of deferred fees and costs $ 2,707,727 $ 2,357,137
Schedule of Financing Receivables Acquired with Deteriorated Credit Quality	Peoples has acquired various loans through business combinations for which there was, at acquisition, evidence of deterioration of credit quality since origination, and for which it was probable that all contractually required payments would not be collected. The carrying amounts of these purchased credit impaired loans included in the loan balances above are summarized as follows: (Dollars in thousands) September 30, December 31, Commercial real estate, other $ 12,812 $ 8,117 Commercial and industrial 1,343 767 Residential real estate 20,488 19,532 Consumer 61 33 Total outstanding balance $ 34,704 $ 28,449 Net carrying amount $ 23,639 $ 19,564
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield	Changes in the accretable yield for purchased credit impaired loans for the nine months ended September 30 were as follows: (Dollars in thousands) September 30, September 30, Balance, beginning of period $ 6,704 $ 7,132 Reclassification from nonaccretable to accretable 2,019 1,285 Additions: ASB Financial Corp. (preliminary) 2,047 — Accretion (1,392 ) (1,279 ) Balance, September 30 $ 9,378 $ 7,138 Acquired loans are reported net of the unamortized fair value adjustment. The following table details the preliminary fair value adjustment for acquired loans as of the acquisition date: (Dollars in thousands, except per share data) ASB Nonimpaired Loans Contractual cash flows $ 342,087 Nonaccretable difference 59,967 Expected cash flows 282,120 Accretable yield 54,029 Fair value $ 228,091 Credit Impaired Loans Contractual cash flows $ 19,031 Nonaccretable difference 5,908 Expected cash flows 13,123 Accretable yield 2,047 Fair value $ 11,076
Nonaccrual and Past Due Loans	The recorded investments in loans on nonaccrual status and loans delinquent for 90 days or more and accruing were as follows: Nonaccrual Loans Loans 90+ Days Past Due and Accruing (Dollars in thousands) September 30, December 31, September 30, December 31, Originated loans: Commercial real estate, construction $ 725 $ 754 $ — $ — Commercial real estate, other 6,712 6,877 — — Commercial real estate 7,437 7,631 — — Commercial and industrial 1,308 739 — — Residential real estate 3,842 3,546 373 548 Home equity lines of credit 582 550 84 50 Consumer, indirect 405 256 — — Consumer, direct 31 39 — 16 Consumer 436 295 — 16 Total originated loans $ 13,605 $ 12,761 $ 457 $ 614 Acquired loans: Commercial real estate, construction $ — $ — $ 401 $ — Commercial real estate, other 225 192 60 215 Commercial real estate 225 192 461 215 Commercial and industrial 61 259 — 45 Residential real estate 1,970 2,168 965 730 Home equity lines of credit 374 312 — 22 Consumer, indirect — — 2 — Total acquired loans $ 2,630 $ 2,931 $ 1,428 $ 1,012 Total loans $ 16,235 $ 15,692 $ 1,885 $ 1,626
Aging Of The Recorded Investment In Past Due Loans And Leases	The following table presents the aging of the recorded investment in past due loans: Loans Past Due Current Loans Total Loans (Dollars in thousands) 30 - 59 days 60 - 89 days 90 + Days Total September 30, 2018 Originated loans: Commercial real estate, construction $ — $ — $ 725 $ 725 $ 102,837 $ 103,562 Commercial real estate, other 521 601 6,418 7,540 623,180 630,720 Commercial real estate 521 601 7,143 8,265 726,017 734,282 Commercial and industrial 624 865 988 2,477 508,114 510,591 Residential real estate 826 2,544 2,126 5,496 294,272 299,768 Home equity lines of credit 320 62 410 792 92,100 92,892 Consumer, indirect 2,308 222 220 2,750 393,951 396,701 Consumer, direct 289 5 20 314 72,287 72,601 Consumer 2,597 227 240 3,064 466,238 469,302 Deposit account overdrafts — — — — 649 649 Total originated loans $ 4,888 $ 4,299 $ 10,907 $ 20,094 $ 2,087,390 $ 2,107,484 Acquired loans: Commercial real estate, construction $ 9 $ — $ 401 $ 410 $ 12,640 $ 13,050 Commercial real estate, other 1,318 136 140 1,594 190,399 191,993 Commercial real estate 1,327 136 541 2,004 203,039 205,043 Commercial and industrial 1,263 15 20 1,298 39,890 41,188 Residential real estate 1,382 1,215 1,963 4,560 303,618 308,178 Home equity lines of credit 572 107 210 889 42,072 42,961 Consumer, indirect 5 — 2 7 154 161 Consumer, direct 19 12 — 31 2,681 2,712 Consumer 24 12 2 38 2,835 2,873 Total acquired loans $ 4,568 $ 1,485 $ 2,736 $ 8,789 $ 591,454 $ 600,243 Total loans $ 9,456 $ 5,784 $ 13,643 $ 28,883 $ 2,678,844 $ 2,707,727 Loans Past Due Current Loans Total Loans (Dollars in thousands) 30 - 59 days 60 - 89 days 90 + Days Total December 31, 2017 Originated loans: Commercial real estate, construction $ — $ — $ — $ — $ 107,118 $ 107,118 Commercial real estate, other 990 — 6,492 7,482 587,965 595,447 Commercial real estate 990 — 6,492 7,482 695,083 702,565 Commercial and industrial 1,423 92 706 2,221 435,830 438,051 Residential real estate 4,562 1,234 2,408 8,204 296,319 304,523 Home equity lines of credit 502 80 395 977 87,925 88,902 Consumer, indirect 2,153 648 105 2,906 337,484 340,390 Consumer, direct 417 46 48 511 66,499 67,010 Consumer 2,570 694 153 3,417 403,983 407,400 Deposit account overdrafts — — — — 849 849 Total originated loans $ 10,047 $ 2,100 $ 10,154 $ 22,301 $ 1,919,989 $ 1,942,290 Acquired loans: Commercial real estate, construction $ — $ — $ — $ — $ 8,319 $ 8,319 Commercial real estate, other 775 948 312 2,035 163,085 165,120 Commercial real estate 775 948 312 2,035 171,404 173,439 Commercial and industrial — 1 171 172 34,321 34,493 Residential real estate 4,656 1,391 1,910 7,957 176,907 184,864 Home equity lines of credit 126 — 301 427 20,148 20,575 Consumer, indirect 3 — — 3 326 329 Consumer, direct 10 11 — 21 1,126 1,147 Consumer 13 11 — 24 1,452 1,476 Total acquired loans $ 5,570 $ 2,351 $ 2,694 $ 10,615 $ 404,232 $ 414,847 Total loans $ 15,617 $ 4,451 $ 12,848 $ 32,916 $ 2,324,221 $ 2,357,137
Loans By Risk Category	The following table summarizes the risk category of loans within Peoples' loan portfolio based upon the most recent analysis performed: Pass Rated (Grades 1 - 4) Special Mention (Grade 5) Substandard (Grade 6) Doubtful (Grade 7) Not Rated Total Loans (Dollars in thousands) September 30, 2018 Originated loans: Commercial real estate, construction $ 101,274 $ — $ 1,496 $ — $ 792 $ 103,562 Commercial real estate, other 603,723 13,992 13,005 — — 630,720 Commercial real estate 704,997 13,992 14,501 — 792 734,282 Commercial and industrial 459,927 42,036 8,628 — — 510,591 Residential real estate 14,483 537 12,506 294 271,948 299,768 Home equity lines of credit 453 — — — 92,439 92,892 Consumer, indirect 45 — — — 396,656 396,701 Consumer, direct 39 — — — 72,562 72,601 Consumer 84 — — — 469,218 469,302 Deposit account overdrafts — — — — 649 649 Total originated loans $ 1,179,944 $ 56,565 $ 35,635 $ 294 $ 835,046 $ 2,107,484 Acquired loans: Commercial real estate, construction $ 10,138 $ 1,280 $ 1,632 $ — $ — $ 13,050 Commercial real estate, other 175,375 8,450 8,070 98 — 191,993 Commercial real estate 185,513 9,730 9,702 98 — 205,043 Commercial and industrial 38,424 1,400 1,364 — — 41,188 Residential real estate 18,477 1,950 1,825 140 285,786 308,178 Home equity lines of credit 34 — — — 42,927 42,961 Consumer, indirect 4 — — — 157 161 Consumer, direct 39 — — — 2,673 2,712 Consumer 43 — — — 2,830 2,873 Total acquired loans $ 242,491 $ 13,080 $ 12,891 $ 238 $ 331,543 $ 600,243 Total loans $ 1,422,435 $ 69,645 $ 48,526 $ 532 $ 1,166,589 $ 2,707,727 Pass Rated (Grades 1 - 4) Special Mention (Grade 5) Substandard (Grade 6) Doubtful (Grade 7) Not Rated Total Loans (Dollars in thousands) December 31, 2017 Originated loans: Commercial real estate, construction $ 100,409 $ 5,502 $ 754 $ — $ 453 $ 107,118 Commercial real estate, other 561,320 17,189 16,938 — — 595,447 Commercial real estate 661,729 22,691 17,692 — 453 702,565 Commercial and industrial 420,477 13,062 4,512 — — 438,051 Residential real estate 17,896 1,000 11,371 216 274,040 304,523 Home equity lines of credit 454 — — — 88,448 88,902 Consumer, indirect 55 8 — — 340,327 340,390 Consumer, direct 33 — — — 66,977 67,010 Consumer 88 8 — — 407,304 407,400 Deposit account overdrafts — — — — 849 849 Total originated loans $ 1,100,644 $ 36,761 $ 33,575 $ 216 $ 771,094 $ 1,942,290 Acquired loans: Commercial real estate, construction $ 8,267 $ — $ 52 $ — $ — $ 8,319 Commercial real estate, other 149,486 6,527 9,107 — — 165,120 Commercial real estate 157,753 6,527 9,159 — — 173,439 Commercial and industrial 32,011 157 2,325 — — 34,493 Residential real estate 12,543 593 1,105 — 170,623 184,864 Home equity lines of credit 124 — — — 20,451 20,575 Consumer, indirect 12 — — — 317 329 Consumer, direct 35 — — — 1,112 1,147 Consumer 47 — — — 1,429 1,476 Total acquired loans $ 202,478 $ 7,277 $ 12,589 $ — $ 192,503 $ 414,847 Total loans $ 1,303,122 $ 44,038 $ 46,164 $ 216 $ 963,597 $ 2,357,137
Schedule Of Impaired Loans	The following table summarizes loans classified as impaired: Unpaid Principal Balance Recorded Investment Total Recorded Investment Average Recorded Investment Interest Income Recognized With Allowance Without Allowance Related Allowance (Dollars in thousands) September 30, 2018 Commercial real estate, construction $ 2,483 $ — $ 2,396 $ 2,396 $ — $ 1,571 $ 46 Commercial real estate, other 17,119 269 15,710 15,979 91 13,795 349 Commercial real estate 19,602 269 18,106 18,375 91 15,366 395 Commercial and industrial 2,395 899 1,286 2,185 191 2,068 53 Residential real estate 26,732 234 24,913 25,147 40 22,724 898 Home equity lines of credit 2,298 486 1,784 2,270 83 1,801 84 Consumer, indirect 518 242 285 527 140 242 16 Consumer, direct 77 32 45 77 32 66 11 Consumer 595 274 330 604 172 308 27 Total $ 51,622 $ 2,162 $ 46,419 $ 48,581 $ 577 $ 42,267 $ 1,457 December 31, 2017 Commercial real estate, construction $ 821 $ — $ 754 $ 754 $ — $ 788 $ — Commercial real estate, other 14,909 14 13,606 13,620 1 14,392 503 Commercial real estate 15,730 14 14,360 14,374 1 15,180 503 Commercial and industrial 1,690 951 572 1,523 199 1,668 65 Residential real estate 24,743 477 22,626 23,103 58 23,195 1,246 Home equity lines of credit 1,707 81 1,624 1,705 18 1,505 85 Consumer, indirect 273 70 206 276 26 184 20 Consumer, direct 87 56 28 84 37 79 7 Consumer 360 126 234 360 63 263 27 Total $ 44,230 $ 1,649 $ 39,416 $ 41,065 $ 339 $ 41,811 $ 1,926
Troubled Debt Restructurings on Financing Receivables	The following table summarizes the loans that were modified as a TDR during the three months ended September 30 : Three Months Ended Recorded Investment (a) (Dollars in thousands) Number of Contracts Pre-Modification Post-Modification Remaining Recorded Investment September 30, 2018 Originated loans: Residential real estate 3 $ 87 $ 87 $ 87 Home equity lines of credit 4 533 533 531 Consumer, indirect 7 150 150 150 Total originated loans 14 $ 770 $ 770 $ 768 Acquired loans: Residential real estate 3 $ 272 $ 272 $ 272 Home equity lines of credit 1 54 54 54 Total acquired loans 4 $ 326 $ 326 $ 326 September 30, 2017 Originated loans: Commercial and industrial 1 $ 36 $ 36 $ 36 Residential real estate 1 90 90 90 Home equity lines of credit 2 22 22 19 Consumer, indirect 5 34 34 34 Consumer, direct 2 9 9 9 Consumer 7 43 43 43 Total originated loans 11 $ 191 $ 191 $ 188 Acquired loans: Residential real estate 2 $ 61 $ 61 $ 61 Home equity lines of credit 1 34 34 34 Total acquired loans 3 $ 95 $ 95 $ 95 (a) The amounts shown are inclusive of all partial paydowns and charge-offs. Loans modified in a TDR that were fully paid down, charged-off or foreclosed upon by period end are not reported. The following table summarizes the loans that were modified as a TDR during the nine months ended September 30 : Nine Months Ended Recorded Investment (a) (Dollars in thousands) Number of Contracts Pre-Modification Post-Modification Remaining Recorded Investment September 30, 2018 Originated loans: Residential real estate 9 $ 871 $ 871 $ 871 Home equity lines of credit 6 565 565 562 Consumer, indirect 26 454 454 420 Consumer, direct 5 27 27 18 Consumer 31 481 481 438 Total originated loans 46 $ 1,917 $ 1,917 $ 1,871 Acquired loans: Commercial real estate, other 1 $ 50 $ 50 $ 47 Residential real estate 15 1,258 1,258 1,244 Home equity lines of credit 5 140 140 139 Total acquired loans 21 $ 1,448 $ 1,448 $ 1,430 September 30, 2017 Originated loans: Commercial real estate, other 1 $ 14 $ 14 $ 14 Commercial and industrial 3 174 174 123 Residential real estate 7 483 483 478 Home equity lines of credit 6 291 291 286 Consumer, indirect 11 127 127 86 Consumer, direct 3 10 10 10 Consumer 14 137 137 96 Total originated loans 31 $ 1,099 $ 1,099 $ 997 Acquired loans: Commercial real estate, other 2 $ 271 $ 271 $ 265 Residential real estate 8 264 264 263 Home equity lines of credit 5 328 328 323 Consumer, direct 2 10 10 9 Total acquired loans 17 $ 873 $ 873 $ 860 (a) The amounts shown are inclusive of all partial paydowns and charge-offs. Loans modified in a TDR that were fully paid down, charged-off or foreclosed upon by period end are not reported.
Troubled Debt Restructurings during prior 12 months that subsequently defaulted	The following table presents those acquired loans modified in a TDR during the year that subsequently defaulted (i.e., are 90 days or more past due following a modification) during the nine -month periods ended September 30 : September 30, 2018 September 30, 2017 (Dollars in thousands) Number of Contracts Recorded Investment (a) Impact on the Allowance for Loan Losses Number of Contracts Recorded Investment (a) Impact on the Allowance for Loan Losses Acquired loans: Residential real estate — $ — $ — 1 $ 44 $ — Home equity lines of credit 1 10 — — — — Consumer, other — — — 1 8 — Total 1 $ 10 $ — 2 $ 52 $ — (a) The amounts shown are inclusive of all partial paydowns and charge-offs. Loans modified in a TDR that were fully paid down, charged-off or foreclosed upon by period end are not reported.
Summary Of Activity In Allowance For Loan And Lease Losses	Changes in the allowance for originated loan losses for the nine months ended September 30 were as follows: (Dollars in thousands) Commercial Real Estate Commercial and Industrial Residential Real Estate Home Equity Lines of Credit Consumer Indirect Consumer Direct Deposit Account Overdrafts Total Balance, January 1, 2018 $ 7,797 $ 5,813 $ 904 $ 693 $ 2,944 $ 464 $ 70 $ 18,685 Charge-offs (849 ) (38 ) (293 ) (67 ) (1,967 ) (297 ) (731 ) (4,242 ) Recoveries 58 10 98 12 403 114 160 855 Net charge-offs (791 ) (28 ) (195 ) (55 ) (1,564 ) (183 ) (571 ) (3,387 ) Provision for loan losses 960 353 290 70 2,043 114 596 4,426 Balance, September 30, 2018 $ 7,966 $ 6,138 $ 999 $ 708 $ 3,423 $ 395 $ 95 $ 19,724 Period-end amount allocated to: Loans individually evaluated for impairment $ 91 $ 191 $ 40 $ 83 $ 140 $ 32 $ — $ 577 Loans collectively evaluated for impairment 7,875 5,947 959 625 3,283 363 95 19,147 Ending balance $ 7,966 $ 6,138 $ 999 $ 708 $ 3,423 $ 395 $ 95 $ 19,724 Balance, January 1, 2017 $ 7,172 $ 6,353 $ 982 $ 688 $ 2,312 $ 518 $ 171 $ 18,196 Charge-offs (25 ) (165 ) (451 ) (100 ) (1,493 ) (275 ) (767 ) (3,276 ) Recoveries 135 1 128 9 598 152 159 1,182 Net recoveries (charge-offs) 110 (164 ) (323 ) (91 ) (895 ) (123 ) (608 ) (2,094 ) Provision for loan losses 252 226 265 82 1,397 46 507 2,775 Balance, September 30, 2017 $ 7,534 $ 6,415 $ 924 $ 679 $ 2,814 $ 441 $ 70 $ 18,877 Period-end amount allocated to: Loans individually evaluated for impairment $ 136 $ 424 $ 151 $ 13 $ 2 $ 21 $ — $ 747 Loans collectively evaluated for impairment 7,398 5,991 773 666 2,812 420 70 18,130 Ending balance $ 7,534 $ 6,415 $ 924 $ 679 $ 2,814 $ 441 $ 70 $ 18,877
Allowance for Loan Losses Acquired Loans [Table Text Block]	The following table presents activity in the allowance for loan losses for acquired loans: Three Months Ended Nine Months Ended (Dollars in thousands) September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Purchased credit impaired loans: Balance, beginning of period $ 108 $ 90 $ 108 $ 233 Provision for (recovery of) loan losses 47 25 47 (118 ) Balance, September 30 $ 155 $ 115 $ 155 $ 115

Long-Term Borrowings (Tables)

Long-Term Borrowings (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table summarizes Peoples' long-term borrowings: September 30, 2018 December 31, 2017 (Dollars in thousands) Balance Weighted- Balance Weighted- FHLB putable, non-amortizing, fixed-rate advances $ 85,000 2.05 % $ 115,000 1.86 % FHLB amortizing, fixed-rate advances 18,860 2.09 % 21,939 2.02 % Junior subordinated debt securities 7,239 7.34 % 7,107 6.51 % Unamortized debt issuance costs — — % (27 ) — % Total long-term borrowings $ 111,099 2.40 % $ 144,019 2.11 %
Schedule of Maturities of Long-term Debt	The aggregate minimum annual retirements of long-term borrowings in future periods are as follows: (Dollars in thousands) Balance Weighted-Average Rate Three months ending December 31, 2018 $ 1,455 1.97 % Year ending December 31, 2019 3,512 1.56 % Year ending December 31, 2020 25,564 1.83 % Year ending December 31, 2021 21,979 1.74 % Year ending December 31, 2022 16,521 1.95 % Thereafter 42,068 3.35 % Total long-term borrowings $ 111,099 2.40 %

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Dividends Declared [Table Text Block]	The following table details the cash dividends declared per common share during the nine months ended September 30: 2018 2017 First Quarter $ 0.26 $ 0.20 Second Quarter 0.28 0.20 Third Quarter 0.28 0.22 Total dividends declared $ 0.82 $ 0.62
Schedule of Preferred, Common and Treasury Stock	The following table details the progression in Peoples’ common shares and treasury stock during the nine months ended September 30, 2018 : Common Shares Treasury Stock Shares at December 31, 2017 18,952,385 702,449 Changes related to stock-based compensation awards: Release of restricted common shares — 30,808 Cancellation of restricted common shares — 1,961 Exercise of stock appreciation rights — (102 ) Grant of restricted common shares — (103,605 ) Grant of common shares — (16,544 ) Changes related to deferred compensation plan for Boards of Directors: Purchase of treasury stock — 4,646 Disbursed out of treasury stock — (2,089 ) Common shares issued under dividend reinvestment plan 14,098 — Common shares issued under compensation plan for Boards of Directors — (3,088 ) Common shares issued under employee stock purchase plan — (5,186 ) Issuance of common shares related to the acquisition of ASB Financial Corp. 1,152,711 — Shares at September 30, 2018 20,119,194 609,250
Schedule of Accumulated Other Comprehensive (Loss) Income	The following table details the change in the components of Peoples’ accumulated other comprehensive loss for the nine months ended September 30, 2018 : (Dollars in thousands) Unrealized Loss on Securities Unrecognized Net Pension and Postretirement Costs Unrealized Gain on Cash Flow Hedge Accumulated Other Comprehensive Loss Balance, December 31, 2017 $ (2,088 ) $ (4,256 ) $ 1,129 $ (5,215 ) Reclassification adjustments to net income: Realized gain on sale of securities, net of tax 115 — — 115 Realized loss due to settlement and curtailment, net of tax — 139 — 139 Amounts reclassified out of accumulated other comprehensive loss per ASU 2016-01 (5,020 ) — — (5,020 ) Other comprehensive (loss) income, net of reclassifications and tax (13,629 ) 993 2,027 (10,609 ) Balance, September 30, 2018 $ (20,622 ) $ (3,124 ) $ 3,156 $ (20,590 )

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	The following table summarizes the change in projected benefit obligation and funded status as a result of the remeasurement and the aggregate settlements for the three months ended September 30, 2018: As of September 30, 2018 (Dollars in thousands) December 31, Before Impact of After Funded status: 2017 Settlements Settlement Settlement Projected benefit obligation $ 12,991 $ 12,006 $ (510 ) $ 11,496 Fair value of plan assets 8,493 12,006 (510 ) 11,496 Funded status $ (4,498 ) $ — $ — $ — Gross unrealized loss $ 5,458 $ 4,196 $ 176 $ 4,020 Assumptions: Discount rate 3.40 % 4.00 % 4.00 % Expected return on plan assets 7.50 % 7.50 % 7.50 %
Schedule of Net Benefit Costs	The following tables detail the components of the net periodic cost for the plans: Pension Benefits Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Interest cost $ 104 $ 112 $ 314 $ 338 Expected return on plan assets (147 ) (138 ) (440 ) (415 ) Amortization of net loss 29 26 84 77 Settlement of benefit obligation 176 — — — Net periodic cost $ 162 $ — $ (42 ) $ — Postretirement Benefits Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Interest cost $ — $ 1 $ 2 $ 3 Amortization of net gain (1 ) (1 ) (4 ) (5 ) Net periodic cost $ (1 ) $ — $ (2 ) $ (2 )

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Calculations of Basic and Diluted Earnings per Common Share	The calculations of basic and diluted earnings per common share were as follows: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands, except per common share data) 2018 2017 2018 2017 Distributed earnings allocated to common shareholders $ 5,409 $ 3,972 $ 15,532 $ 11,184 Undistributed earnings allocated to common shareholders 7,246 6,865 16,638 18,134 Net earnings allocated to common shareholders $ 12,655 $ 10,837 $ 32,170 $ 29,318 Weighted-average common shares outstanding 19,325,457 18,056,202 18,875,290 18,043,692 Effect of potentially dilutive common shares 141,408 157,331 128,797 156,267 Total weighted-average diluted common shares outstanding 19,466,865 18,213,533 19,004,087 18,199,959 Earnings per common share: Basic $ 0.65 $ 0.60 $ 1.70 $ 1.62 Diluted $ 0.65 $ 0.60 $ 1.69 $ 1.61 Anti-dilutive shares excluded from calculation: Restricted shares, stock options and stock appreciation rights 5,541 163 2,193 270

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Stock Appreciation Rights Outstanding & Exercisable by Exercise Price	The following table summarizes the changes to Peoples' SARs for the nine months ended September 30, 2018 : Number of Common Shares Subject to SARs Weighted- Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1 314 $ 23.77 Exercised 314 23.77 Outstanding at September 30 — $ — — $ — Exercisable at September 30 — $ — — $ —
Schedule of Restricted Shares Activity	The following table summarizes the changes to Peoples’ restricted common shares for the nine months ended September 30, 2018 : Time-Based Vesting Performance-Based Vesting Number of Common Shares Weighted-Average Grant Date Fair Value Number of Common Shares Weighted-Average Grant Date Fair Value Outstanding at January 1 33,082 $ 22.85 176,218 $ 25.50 Awarded 18,729 36.70 84,876 35.43 Released 7,000 24.49 83,311 23.62 Forfeited — — 1,961 34.39 Outstanding at September 30 44,811 $ 28.38 175,822 $ 31.09
Summary of Stock-Based Compensation and Related Tax Benefit	The following table summarizes the amount of stock-based compensation expense and related tax benefit recognized for each period: Three Months Ended Nine Months Ended September 30, September 30, (Dollars in thousands) 2018 2017 2018 2017 Total stock-based compensation expense $ 564 $ 351 $ 2,174 $ 1,362 Recognized tax benefit (119 ) (123 ) (457 ) (477 ) Net expense recognized $ 445 $ 228 $ 1,717 $ 885

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue Recognition and Deferred Revenue [Abstract]
Disaggregation of Revenue [Table Text Block]	The following table details Peoples' revenue from contracts with customers for the three and nine months ended September 30, 2018 : Three Months Ended Nine Months Ended (Dollars in thousands) September 30, 2018 September 30, 2018 Insurance income: Commission and fees from sale of insurance policies (a) $ 3,159 $ 9,541 Fees related to third-party administration services (a) 131 423 Performance-based commissions (b) 98 1,448 Trust and investment income (a) 3,110 9,410 Electronic banking income: Interchange income (a) 2,464 7,248 Promotional and usage income (a) 426 1,212 Deposit account service charges: Ongoing maintenance fees for deposit accounts (a) 691 2,012 Transactional-based fees (b) 1,961 5,148 Commercial loan swap fees (b) 355 617 Other non-interest income transactional-based fees (b) 228 772 Total $ 12,623 $ 37,831 Timing of revenue recognition: Services transferred over time $ 9,981 $ 29,846 Services transferred at a point in time 2,642 7,985 Total $ 12,623 $ 37,831 (a) Services transferred over time. (b) Services transferred at a point in time.
Contract with Customer, Asset and Liability [Table Text Block]	The following table details the change in Peoples' contract liabilities for the period ended September 30, 2018 : Contract Liabilities (Dollars in thousands) Balance, January 1, 2018 (a) $ 4,700 Additional deferred income 4,362 Recognition of income previously deferred (4,508 ) Balance, September 30, 2018 $ 4,554 (a) The amount of $3.1 million reported elsewhere throughout this Form 10-Q is the $4.7 million noted above, net of federal corporate income taxes.
Revenue From Contract With Customer Financial Statement Impact [Table Text Block]	The following table details the impact of the adoption of ASU 2014-09 to Peoples' Consolidated Statements of Income and Balance Sheets, compared to amounts that would have been recognized under previous guidance: At or For the Three Months Ended At or For the Nine Months Ended September 30, 2018 September 30, 2018 (Dollars in thousands) As Reported Impact of ASC 606 Amounts Recognized Under Previous Guidance As Reported Impact of ASC 606 Amounts Recognized Under Previous Guidance Non-interest income: Insurance income $ 3,388 $ 101 $ 3,287 $ 11,412 $ 146 $ 11,266 Liabilities: Accrued expenses and other liabilities 49,747 2,940 46,807 49,747 2,940 46,807 Stockholders' equity: Retained earnings 152,976 (2,940 ) 155,916 152,976 (2,940 ) 155,916

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2018
Acquisitions [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]	Changes in the accretable yield for purchased credit impaired loans for the nine months ended September 30 were as follows: (Dollars in thousands) September 30, September 30, Balance, beginning of period $ 6,704 $ 7,132 Reclassification from nonaccretable to accretable 2,019 1,285 Additions: ASB Financial Corp. (preliminary) 2,047 — Accretion (1,392 ) (1,279 ) Balance, September 30 $ 9,378 $ 7,138 Acquired loans are reported net of the unamortized fair value adjustment. The following table details the preliminary fair value adjustment for acquired loans as of the acquisition date: (Dollars in thousands, except per share data) ASB Nonimpaired Loans Contractual cash flows $ 342,087 Nonaccretable difference 59,967 Expected cash flows 282,120 Accretable yield 54,029 Fair value $ 228,091 Credit Impaired Loans Contractual cash flows $ 19,031 Nonaccretable difference 5,908 Expected cash flows 13,123 Accretable yield 2,047 Fair value $ 11,076
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table provides the preliminary purchase price calculation as of the date of acquisition for the ASB acquisition, and the assets acquired and liabilities assumed at their estimated fair values. (Dollars in thousands, except per share data) ASB Purchase Price Common shares electing cash consideration 31,763 Cash purchase price per share $ 20.00 Cash consideration $ 635 Common shares electing stock consideration 1,947,271 Number of common shares of Peoples issued for each common share of acquired company 0.592 Price per Peoples common share, based on closing date $ 35.48 Common share consideration $ 40,898 Cash in lieu of fractional common shares of Peoples $ 2 Total consideration $ 41,535 Net Assets at Fair Value Assets Total cash and cash equivalents $ 5,332 Available-for-sale investment securities 18,155 Held-to-maturity investment securities 649 Other investment securities 1,596 Total investment securities 20,400 Loans, net of deferred fees and costs 236,628 Loans held for sale 2,539 Net loans 239,167 Bank premises and equipment, net of accumulated depreciation 3,320 Bank owned life insurance 4,803 Other intangible assets 2,639 Other assets 3,481 Total assets $ 279,142 Liabilities Deposits: Non-interest-bearing $ 29,487 Interest-bearing 169,142 Total deposits 198,629 Short-term borrowings 54,824 Accrued expenses and other liabilities 2,716 Total liabilities $ 256,169 Net assets $ 22,973 Goodwill $ 18,562

Summary of Significant Accoun_3

Summary of Significant Accounting Policies Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income tax expense	$ 2,821	$ 5,127	$ 6,216	$ 13,393
Adjustments for New Accounting Pronouncement [Member]
Income tax expense					$ 900

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Assets Measured at Fair Value Recurring) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Sep. 30, 2018
Recurring Basis
Unrealized Gain (Loss) on Investments	$ 6,500
Available-for-sale securities	795,187	$ 793,325
Held-to-maturity investment securities at fair value	41,213	37,095
Interest Rate Derivative Assets, at Fair Value	4,600	8,800
Interest Rate Derivative Liabilities, at Fair Value	3,200	4,900
Level 2
Recurring Basis
Held-to-maturity investment securities at fair value	41,213	37,095
Other Investments	38,371	42,766
States and political subdivisions
Recurring Basis
Available-for-sale securities	101,569	93,790
Held-to-maturity investment securities at fair value	4,417	4,889
States and political subdivisions | Level 1
Recurring Basis
Held-to-maturity investment securities at fair value	0	0
States and political subdivisions | Level 2
Recurring Basis
Held-to-maturity investment securities at fair value	4,417	4,889
States and political subdivisions | Level 3
Recurring Basis
Held-to-maturity investment securities at fair value	0	0
Residential mortgage-backed securities
Recurring Basis
Available-for-sale securities	673,664	688,656
Held-to-maturity investment securities at fair value	32,227	28,718
Residential mortgage-backed securities | Level 1
Recurring Basis
Held-to-maturity investment securities at fair value	0	0
Residential mortgage-backed securities | Level 2
Recurring Basis
Held-to-maturity investment securities at fair value	32,227	28,718
Residential mortgage-backed securities | Level 3
Recurring Basis
Held-to-maturity investment securities at fair value	0	0
Commercial mortgage-backed securities
Recurring Basis
Available-for-sale securities	6,976	6,713
Held-to-maturity investment securities at fair value	4,569	3,488
Commercial mortgage-backed securities | Level 1
Recurring Basis
Held-to-maturity investment securities at fair value	0	0
Commercial mortgage-backed securities | Level 2
Recurring Basis
Held-to-maturity investment securities at fair value	4,569	3,488
Commercial mortgage-backed securities | Level 3
Recurring Basis
Held-to-maturity investment securities at fair value	0	0
Bank-issued trust preferred securities
Recurring Basis
Available-for-sale securities	5,129	4,166
Equity investment securities (a)
Recurring Basis
Available-for-sale securities	7,849
Other Investments	0	278
Recurring Basis [Member] | Level 1
Recurring Basis
Available-for-sale securities	7,694	0
Recurring Basis [Member] | Level 2
Recurring Basis
Available-for-sale securities	787,493	793,325
Loans Held-for-sale, Fair Value Disclosure	2,510	4,776
Interest Rate Derivative Assets, at Fair Value	4,594	8,766
Interest Rate Derivative Liabilities, at Fair Value	3,241	4,871
Recurring Basis [Member] | Level 3
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | States and political subdivisions | Level 1
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | States and political subdivisions | Level 2
Recurring Basis
Available-for-sale securities	101,569	93,790
Recurring Basis [Member] | States and political subdivisions | Level 3
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | Residential mortgage-backed securities | Level 1
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | Residential mortgage-backed securities | Level 2
Recurring Basis
Available-for-sale securities	673,664	688,656
Recurring Basis [Member] | Residential mortgage-backed securities | Level 3
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | Commercial mortgage-backed securities | Level 1
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | Commercial mortgage-backed securities | Level 2
Recurring Basis
Available-for-sale securities	6,976	6,713
Recurring Basis [Member] | Commercial mortgage-backed securities | Level 3
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | Bank-issued trust preferred securities | Level 1
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | Bank-issued trust preferred securities | Level 2
Recurring Basis
Available-for-sale securities	5,129	4,166
Recurring Basis [Member] | Bank-issued trust preferred securities | Level 3
Recurring Basis
Available-for-sale securities	0	0
Recurring Basis [Member] | Equity investment securities (a) | Level 1
Recurring Basis
Available-for-sale securities	7,694	0
Other Investments		104
Recurring Basis [Member] | Equity investment securities (a) | Level 2
Recurring Basis
Available-for-sale securities	155	0
Other Investments		174
Recurring Basis [Member] | Equity investment securities (a) | Level 3
Recurring Basis
Available-for-sale securities	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments (Assets Measured at Fair Value Nonrecurring) (Details) - Nonrecurring Basis - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Nonrecurring Basis
Losses on impaired loans charged through allowance for loan losses	$ 182	$ 153
Level 2
Nonrecurring Basis
Impaired loans, aggregate outstanding principal balance	31,300	31,300
Level 3
Nonrecurring Basis
Impaired loans, fair value	25,038	25,038	$ 20,602
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 106	$ 106	$ 208

Fair Value of Financial Instr_5

Fair Value of Financial Instruments (Fair Values of Financial Assets and Liabilities on Balance Sheets) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value
Cash and Cash Equivalents, Fair Value Disclosure	$ 95,173	$ 72,194
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	29,368	28,132
Financial assets:
Bank owned life insurance	68,439	62,176
Bank premises and equipment, net	57,527	52,510
Financial liabilities:
Federal Reserve Bank Stock	12,294	10,179
Loans Receivable and Loans Held-for-sale, Fair Value Disclosure	2,780,292	2,274,194
Servicing Asset	2,682	2,305
Deposits, Fair Value Disclosure	3,029,072	2,730,071
Short-term Debt, Fair Value	295,542	209,628
Long-term Debt, Fair Value	101,779	142,108
Carrying Amount
Financial liabilities:
Other Investments	42,766	38,371
Loans Receivable and Loans Held-for-sale, Fair Value Disclosure	2,687,848	2,338,344
Deposits, Fair Value Disclosure	3,041,123	2,730,330
Short-term Debt, Fair Value	296,830	209,491
Long-term Debt, Fair Value	111,099	144,019
Level 2
Financial liabilities:
Other Investments	42,766	38,371
Recurring Basis [Member] | Level 2
Fair Value
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	29,368	28,132
Financial liabilities:
Federal Reserve Bank Stock	12,294	10,179
Recurring Basis [Member] | U.S. Treasury and government agencies
Financial liabilities:
Other Investments	1,044
Recurring Basis [Member] | Federal Home Loan Mortgage Corp (FHLMC) stock
Financial liabilities:
Other Investments	$ 60
Recurring Basis [Member] | Federal Home Loan Mortgage Corp (FHLMC) stock | Level 2
Financial liabilities:
Other Investments		$ 60

Investment Securities (Availabl

Investment Securities (Available-for-sale Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities
Securities of a single issuer, other than US Treasury, government agencies and US government sponsored agencies exceeding 10% of Stockholders' Equity	$ 0
Amortized Cost	819,431	$ 797,732
Gross Unrealized Gains	2,275	11,040
Gross Unrealized Losses	(28,381)	(13,585)
Available-for-sale securities	793,325	795,187
States and political subdivisions
Schedule of Available-for-sale Securities
Amortized Cost	94,014	100,039
Gross Unrealized Gains	585	1,786
Gross Unrealized Losses	(809)	(256)
Available-for-sale securities	93,790	101,569
Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	714,360	684,100
Gross Unrealized Gains	1,558	2,582
Gross Unrealized Losses	(27,262)	(13,018)
Available-for-sale securities	688,656	673,664
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	6,861	7,004
Gross Unrealized Gains	0	11
Gross Unrealized Losses	(148)	(39)
Available-for-sale securities	6,713	6,976
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
Amortized Cost	4,196	5,195
Gross Unrealized Gains	132	141
Gross Unrealized Losses	(162)	(207)
Available-for-sale securities	$ 4,166	5,129
Equity investment securities (a)
Schedule of Available-for-sale Securities
Amortized Cost		1,394
Gross Unrealized Gains		6,520
Gross Unrealized Losses		(65)
Available-for-sale securities		$ 7,849

Investment Securities (Availa_2

Investment Securities (Available-for-sale Securities Gross Realized Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Gross gains and gross losses realized from sales of available-for-sale securities:
Gross gains realized	$ 0	$ 1,877	$ 5	$ 2,235
Gross losses realized	0	16	151	16
Net gain (loss) realized	$ 0	$ 1,861	$ (146)	$ 2,219

Investment Securities (Availa_3

Investment Securities (Available-for-sale Securities with Unrealized Loss) (Details) $ in Thousands	Sep. 30, 2018USD ($)securities	Dec. 31, 2017USD ($)securities
Available-for-sale securities that had an unrealized loss:
Less than 12 months, fair value	$ 257,288	$ 294,746
Less than 12 months, unrealized loss	$ 5,771	$ 3,575
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	166	97
12 months or more, fair value	$ 420,029	$ 301,298
12 months or more, unrealized loss	$ 22,610	$ 10,010
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	138	94
Total unrealized loss position, fair value	$ 677,317	$ 596,044
Total unrealized loss	28,381	13,585
States and political subdivisions
Available-for-sale securities that had an unrealized loss:
Less than 12 months, fair value	30,112	16,985
Less than 12 months, unrealized loss	$ 224	$ 89
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	52	18
12 months or more, fair value	$ 9,480	$ 5,308
12 months or more, unrealized loss	$ 585	$ 167
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	6	1
Total unrealized loss position, fair value	$ 39,592	$ 22,293
Total unrealized loss	809	256
Residential mortgage-backed securities
Available-for-sale securities that had an unrealized loss:
Less than 12 months, fair value	224,049	274,998
Less than 12 months, unrealized loss	$ 5,503	$ 3,462
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	113	77
12 months or more, fair value	$ 405,124	$ 291,812
12 months or more, unrealized loss	$ 21,759	$ 9,556
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	128	88
Total unrealized loss position, fair value	$ 629,173	$ 566,810
Total unrealized loss	27,262	13,018
Commercial mortgage-backed securities
Available-for-sale securities that had an unrealized loss:
Less than 12 months, fair value	3,127	2,487
Less than 12 months, unrealized loss	$ 44	$ 23
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	1	1
12 months or more, fair value	$ 3,587	$ 1,274
12 months or more, unrealized loss	$ 104	$ 16
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	2	1
Total unrealized loss position, fair value	$ 6,714	$ 3,761
Total unrealized loss	148	39
Bank-issued trust preferred securities
Available-for-sale securities that had an unrealized loss:
Less than 12 months, fair value	0	0
Less than 12 months, unrealized loss	$ 0	$ 0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities	0	0
12 months or more, fair value	$ 1,838	$ 2,792
12 months or more, unrealized loss	$ 162	$ 207
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	2	3
Total unrealized loss position, fair value	$ 1,838	$ 2,792
Total unrealized loss	$ 162	207
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	2
Equity investment securities (a)
Available-for-sale securities that had an unrealized loss:
Less than 12 months, fair value		276
Less than 12 months, unrealized loss		$ 1
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | securities		1
12 months or more, fair value		$ 112
12 months or more, unrealized loss		$ 64
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities		1
Total unrealized loss position, fair value		$ 388
Total unrealized loss		$ 65
Mortgage-backed securities, issued by US government sponsored agencies
Available-for-sale securities that had an unrealized loss:
Percentage of mortgage-backed securities in unrealized loss position for more than 12 months	99.00%
Mortgage-backed securities, privately issued
Available-for-sale securities that had an unrealized loss:
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	2
Percentage of mortgage-backed securities in unrealized loss position for more than 12 months	1.00%
Fair value within book value	90.00%
Fair Value Less Than 90 Percent of Book Value [Member] | Mortgage-backed securities, privately issued
Available-for-sale securities that had an unrealized loss:
12 months or more, fair value	$ 145
Book value of privately issued mortgage-backed securities in unrealized loss position for more than 12 months	$ 217

Investment Securities (Availa_4

Investment Securities (Available-for-sale Securities by Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost	$ 1,708
Debt securities, maturing 1 to 5 years, amortized cost	31,114
Debt securities, maturing 5 to 10 years, amortized cost	76,777
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost	709,832
Amortized Cost	819,431	$ 797,732
Debt securities, maturing within 1 year, fair value	1,703
Debt securities, maturing 1 to 5 years, fair value	30,627
Debt securities, maturing 5 to 10 years, fair value	75,006
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value	685,989
Available-for-sale investment securities, at fair value (amortized cost of $819,431 at September 30, 2018 and $797,732 at December 31, 2017) (a)	$ 793,325	795,187
Available-for-sale securities, maturing within 1 year, average yield	2.52%
Available-for-sale securities, maturing 1 to 5 years, average yield	2.78%
Available-for-sale securities, maturing 5 to 10 years, average yield	3.38%
Available-for-sale securities, maturing over 10 years, average yield	2.84%
Available-for-sale securities, total average yield	2.88%
States and political subdivisions
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost	$ 714
Debt securities, maturing 1 to 5 years, amortized cost	12,538
Debt securities, maturing 5 to 10 years, amortized cost	26,289
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost	54,473
Debt securities, total amortized cost	94,014
Amortized Cost	94,014	100,039
Debt securities, maturing within 1 year, fair value	713
Debt securities, maturing 1 to 5 years, fair value	12,489
Debt securities, maturing 5 to 10 years, fair value	26,184
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value	54,404
Available-for-sale investment securities, at fair value (amortized cost of $819,431 at September 30, 2018 and $797,732 at December 31, 2017) (a)	93,790	101,569
Debt securities, total fair value	93,790
Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost	994
Debt securities, maturing 1 to 5 years, amortized cost	12,898
Debt securities, maturing 5 to 10 years, amortized cost	46,292
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost	654,176
Debt securities, total amortized cost	714,360
Amortized Cost	714,360	684,100
Debt securities, maturing within 1 year, fair value	990
Debt securities, maturing 1 to 5 years, fair value	12,590
Debt securities, maturing 5 to 10 years, fair value	44,656
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value	630,420
Available-for-sale investment securities, at fair value (amortized cost of $819,431 at September 30, 2018 and $797,732 at December 31, 2017) (a)	688,656	673,664
Debt securities, total fair value	688,656
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost	0
Debt securities, maturing 1 to 5 years, amortized cost	5,678
Debt securities, maturing 5 to 10 years, amortized cost	0
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost	1,183
Debt securities, total amortized cost	6,861
Amortized Cost	6,861	7,004
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	5,548
Debt securities, maturing 5 to 10 years, fair value	0
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value	1,165
Available-for-sale investment securities, at fair value (amortized cost of $819,431 at September 30, 2018 and $797,732 at December 31, 2017) (a)	6,713	6,976
Debt securities, total fair value	6,713
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
Debt securities, maturing 5 to 10 years, amortized cost	4,196
Available-for-sale Securities, Other Maturities, Rolling after Year Ten, Amortized Cost Basis	0
Available-for-sale Securities, Other Maturities, Amortized Cost Basis	4,196
Amortized Cost	4,196	5,195
Debt securities, maturing 5 to 10 years, fair value	4,166
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value	0
Available-for-sale investment securities, at fair value (amortized cost of $819,431 at September 30, 2018 and $797,732 at December 31, 2017) (a)	4,166	$ 5,129
Debt securities, total fair value	$ 4,166

Investment Securities (Held-to-

Investment Securities (Held-to-maturity Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 37,790	$ 40,928
Gross Unrealized Gains	517	876
Gross Unrealized Losses	(1,212)	(591)
Held-to-maturity investment securities at fair value	37,095	41,213
States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	4,451
Gross Unrealized Gains	438	607
Gross Unrealized Losses	0	0
Held-to-maturity investment securities at fair value	4,889	4,417
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	29,765
Gross Unrealized Gains	79	269
Gross Unrealized Losses	(1,126)	(529)
Held-to-maturity investment securities at fair value	28,718	32,227
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	3,574	4,631
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(86)	(62)
Held-to-maturity investment securities at fair value	3,488	4,569
Reported Value Measurement [Member] | States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	4,451	3,810
Reported Value Measurement [Member] | Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	29,765	$ 32,487
Reported Value Measurement [Member] | Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 3,574

Investment Securities (Held-t_2

Investment Securities (Held-to-Maturity Securities Gross Realized Gains and Losses) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Realized Gain (Loss) on Held-to-Maturity Securities	$ 0	$ 0	$ 0	$ 0

Investment Securities (Held-t_3

Investment Securities (Held-to-maturity Securities with Unrealized Loss) (Details) $ in Thousands	Sep. 30, 2018USD ($)securities	Dec. 31, 2017USD ($)securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	$ 11,826	$ 1,476
Less than 12 months, unrealized loss	$ 182	$ 4
Less than 12 months, no. of securities | securities	6	2
12 months or more, fair value	$ 14,748	$ 16,667
12 months or more, unrealized loss	$ 1,030	$ 587
12 months or more, no. of securities | securities	4	4
Total fair value	$ 26,574	$ 18,143
Total unrealized loss	1,212	591
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	11,826	1,476
Less than 12 months, unrealized loss	$ 182	$ 4
Less than 12 months, no. of securities | securities	6	2
12 months or more, fair value	$ 11,260	$ 12,098
12 months or more, unrealized loss	$ 944	$ 525
12 months or more, no. of securities | securities	3	3
Total fair value	$ 23,086	$ 13,574
Total unrealized loss	1,126	529
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	0	0
Less than 12 months, unrealized loss	$ 0	$ 0
Less than 12 months, no. of securities | securities	0	0
12 months or more, fair value	$ 3,488	$ 4,569
12 months or more, unrealized loss	$ 86	$ 62
12 months or more, no. of securities | securities	1	1
Total fair value	$ 3,488	$ 4,569
Total unrealized loss	$ 86	$ 62

Investment Securities (Held-t_4

Investment Securities (Held-to-maturity Securities by Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	$ 0
Debt securities, maturing 1 to 5 years, amortized cost	737
Debt securities, maturing 5 to 10 years, amortized cost	11,042
Debt securities, maturing over 10 years, amortized cost	26,011
Amortized Cost	37,790	$ 40,928
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	724
Debt securities, maturing 5 to 10 years, fair value	11,438
Debt securities, maturing over 10 years, fair value	24,933
Fair Value	$ 37,095	41,213
Held-to-maturity securities, maturing within 1 year, average yield	0.00%
Held-to-maturity securities, maturing 1 to 5 years, average yield	2.97%
Held-to-maturity securities, maturing 6 to 10 years, average yield	3.08%
Held-to-maturity securities, maturing over 10 years, average yield	2.70%
Held-to-maturity securities, total average yield	2.82%
States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	$ 0
Debt securities, maturing 1 to 5 years, amortized cost	309
Debt securities, maturing 5 to 10 years, amortized cost	2,982
Debt securities, maturing over 10 years, amortized cost	1,160
Amortized Cost	4,451
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	309
Debt securities, maturing 5 to 10 years, fair value	3,410
Debt securities, maturing over 10 years, fair value	1,170
Fair Value	4,889	4,417
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	0
Debt securities, maturing 1 to 5 years, amortized cost	428
Debt securities, maturing 5 to 10 years, amortized cost	8,060
Debt securities, maturing over 10 years, amortized cost	21,277
Amortized Cost	29,765
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	415
Debt securities, maturing 5 to 10 years, fair value	8,028
Debt securities, maturing over 10 years, fair value	20,275
Fair Value	28,718	32,227
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	0
Debt securities, maturing 1 to 5 years, amortized cost	0
Debt securities, maturing 5 to 10 years, amortized cost	0
Debt securities, maturing over 10 years, amortized cost	3,574
Amortized Cost	3,574	4,631
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	0
Debt securities, maturing 5 to 10 years, fair value	0
Debt securities, maturing over 10 years, fair value	3,488
Fair Value	$ 3,488	$ 4,569

Investment Securities (Pledged

Investment Securities (Pledged Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Carrying value of available-for-sale securities pledged to secure public and trust department deposits and repurchase agreements	$ 514.9	$ 522.7
Carrying value of held-to-maturity securities pledged to secure public and trust department deposits and repurchase agreements	17.1	18.3
Carrying value of available-for-sale securities pledged to secure additional borrowing capacity at Federal Home Loan Bank and Federal Reserve Bank	61.8	6.7
Pledged Financial Instruments, Not Separately Reported, Held-To-Maturity Securities for Federal Home Loan Bank and Federal Reserve Bank	$ 17.4	$ 19.9

Investment Securities Other Inv

Investment Securities Other Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Other Investments Carrying Value [Line Items]
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	$ 29,368	$ 28,132
Federal Reserve Bank Stock	12,294	10,179
Other investment securities (a)	43,044	38,371
Other
Other Investments Carrying Value [Line Items]
Other Investments	1,104	60
Equity investment securities (a)
Other Investments Carrying Value [Line Items]
Other Investments	$ 278	$ 0

Loans (Narrative) (Details)

Loans (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of Loans Considered Current	98.90%	99.00%		98.80%
Loans and leases receivable, impaired, commitment to lend	$ 0
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pledged assets separately reported, loans pledged as collateral, at fair value	524.1		$ 487.2
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pledged assets separately reported, loans pledged as collateral, at fair value	$ 198.9		$ 74

Loans (Loan Balances By Classif

Loans (Loan Balances By Classification) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 2,707,727	$ 2,357,137
Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,707,727	2,357,137
Financial Asset Originated [Member] | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,107,484	1,942,290
Financial Asset Originated [Member] | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	103,562	107,118
Financial Asset Originated [Member] | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	630,720	595,447
Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	734,282	702,565
Financial Asset Originated [Member] | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	510,591	438,051
Financial Asset Originated [Member] | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	299,768	304,523
Financial Asset Originated [Member] | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	92,892	88,902
Financial Asset Originated [Member] | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	396,701	340,390
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	72,601	67,010
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	469,302	407,400
Financial Asset Originated [Member] | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	649	849
Acquired Loans | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	600,243	414,847
Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	13,050	8,319
Acquired Loans | Commercial real estate, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	191,993	165,120
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	205,043	173,439
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	41,188	34,493
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	308,178	184,864
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	42,961	20,575
Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	161	329
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,712	1,147
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 2,873	$ 1,476

Loans (Loans Acquired With Dete

Loans (Loans Acquired With Deterioration of Credit Quality) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Purchased credit impaired loans
Carrying Amount	$ 23,639	$ 19,564
Total loans
Purchased credit impaired loans
Outstanding Balance	34,704	28,449
Commercial real estate
Purchased credit impaired loans
Outstanding Balance	12,812	8,117
Commercial and industrial
Purchased credit impaired loans
Outstanding Balance	1,343	767
Residential real estate
Purchased credit impaired loans
Outstanding Balance	20,488	19,532
Consumer, direct
Purchased credit impaired loans
Outstanding Balance	$ 61	$ 33

Loans Accretable Yield Rollforw

Loans Accretable Yield Rollforward (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	$ 6,704	$ 7,132
Reclassification from nonaccretable to accretable	2,019	1,285
Accretion	(1,392)	(1,279)
Ending balance	9,378	$ 7,138
ASB Financial Corp. [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Ending balance	$ 2,047

Loans (Nonaccrual and Past Due

Loans (Nonaccrual and Past Due Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	$ 16,235	$ 15,692
Loans 90 Days Past Due and Accruing	1,885	1,626
Financial Asset Originated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	13,605	12,761
Loans 90 Days Past Due and Accruing	457	614
Financial Asset Originated [Member] | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	725	754
Loans 90 Days Past Due and Accruing	0	0
Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	6,712	6,877
Loans 90 Days Past Due and Accruing	0	0
Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	7,437	7,631
Loans 90 Days Past Due and Accruing	0	0
Financial Asset Originated [Member] | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	1,308	739
Loans 90 Days Past Due and Accruing	0	0
Financial Asset Originated [Member] | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	3,842	3,546
Loans 90 Days Past Due and Accruing	373	548
Financial Asset Originated [Member] | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	582	550
Loans 90 Days Past Due and Accruing	84	50
Financial Asset Originated [Member] | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	405	256
Loans 90 Days Past Due and Accruing	0	0
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	31	39
Loans 90 Days Past Due and Accruing	0	16
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	436	295
Loans 90 Days Past Due and Accruing	0	16
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	2,630	2,931
Loans 90 Days Past Due and Accruing	1,428	1,012
Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	0	0
Loans 90 Days Past Due and Accruing	401	0
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	225	192
Loans 90 Days Past Due and Accruing	60	215
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	225	192
Loans 90 Days Past Due and Accruing	461	215
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	61	259
Loans 90 Days Past Due and Accruing	0	45
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	1,970	2,168
Loans 90 Days Past Due and Accruing	965	730
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	374	312
Loans 90 Days Past Due and Accruing	0	22
Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans	0	0
Loans 90 Days Past Due and Accruing	$ 2	$ 0

Loans (Aging Of The Recorded In

Loans (Aging Of The Recorded Investment In Past Due Loans And Leases) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 2,707,727	$ 2,357,137
Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	28,883	32,916
Current Loans	2,678,844	2,324,221
Total Loans	2,707,727	2,357,137
Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	410	0
Current Loans	12,640	8,319
Total Loans	13,050	8,319
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,594	2,035
Current Loans	190,399	163,085
Total Loans	191,993	165,120
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,004	2,035
Current Loans	203,039	171,404
Total Loans	205,043	173,439
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,298	172
Current Loans	39,890	34,321
Total Loans	41,188	34,493
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,560	7,957
Current Loans	303,618	176,907
Total Loans	308,178	184,864
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	889	427
Current Loans	42,072	20,148
Total Loans	42,961	20,575
Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7	3
Current Loans	154	326
Total Loans	161	329
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	38	24
Current Loans	2,835	1,452
Total Loans	2,873	1,476
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	31	21
Current Loans	2,681	1,126
Total Loans	2,712	1,147
Acquired Loans | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,789	10,615
Current Loans	591,454	404,232
Total Loans	600,243	414,847
Financial Asset Originated [Member] | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	725	0
Current Loans	102,837	107,118
Total Loans	103,562	107,118
Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,540	7,482
Current Loans	623,180	587,965
Total Loans	630,720	595,447
Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,265	7,482
Current Loans	726,017	695,083
Total Loans	734,282	702,565
Financial Asset Originated [Member] | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,477	2,221
Current Loans	508,114	435,830
Total Loans	510,591	438,051
Financial Asset Originated [Member] | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,496	8,204
Current Loans	294,272	296,319
Total Loans	299,768	304,523
Financial Asset Originated [Member] | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	792	977
Current Loans	92,100	87,925
Total Loans	92,892	88,902
Financial Asset Originated [Member] | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,750	2,906
Current Loans	393,951	337,484
Total Loans	396,701	340,390
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,064	3,417
Current Loans	466,238	403,983
Total Loans	469,302	407,400
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	314	511
Current Loans	72,287	66,499
Total Loans	72,601	67,010
Financial Asset Originated [Member] | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Current Loans	649	849
Total Loans	649	849
Financial Asset Originated [Member] | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	20,094	22,301
Current Loans	2,087,390	1,919,989
Total Loans	2,107,484	1,942,290
30 - 59 days | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9,456	15,617
30 - 59 days | Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9	0
30 - 59 days | Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,318	775
30 - 59 days | Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,327	775
30 - 59 days | Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,263	0
30 - 59 days | Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,382	4,656
30 - 59 days | Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	572	126
30 - 59 days | Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5	3
30 - 59 days | Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	24	13
30 - 59 days | Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	19	10
30 - 59 days | Acquired Loans | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,568	5,570
30 - 59 days | Financial Asset Originated [Member] | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
30 - 59 days | Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	521	990
30 - 59 days | Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	521	990
30 - 59 days | Financial Asset Originated [Member] | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	624	1,423
30 - 59 days | Financial Asset Originated [Member] | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	826	4,562
30 - 59 days | Financial Asset Originated [Member] | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	320	502
30 - 59 days | Financial Asset Originated [Member] | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,308	2,153
30 - 59 days | Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,597	2,570
30 - 59 days | Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	289	417
30 - 59 days | Financial Asset Originated [Member] | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
30 - 59 days | Financial Asset Originated [Member] | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,888	10,047
60 - 89 days | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,784	4,451
60 - 89 days | Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
60 - 89 days | Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	136	948
60 - 89 days | Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	136	948
60 - 89 days | Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	15	1
60 - 89 days | Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,215	1,391
60 - 89 days | Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	107	0
60 - 89 days | Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
60 - 89 days | Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	12	11
60 - 89 days | Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	12	11
60 - 89 days | Acquired Loans | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,485	2,351
60 - 89 days | Financial Asset Originated [Member] | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
60 - 89 days | Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	601	0
60 - 89 days | Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	601	0
60 - 89 days | Financial Asset Originated [Member] | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	865	92
60 - 89 days | Financial Asset Originated [Member] | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,544	1,234
60 - 89 days | Financial Asset Originated [Member] | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	62	80
60 - 89 days | Financial Asset Originated [Member] | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	222	648
60 - 89 days | Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	227	694
60 - 89 days | Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5	46
60 - 89 days | Financial Asset Originated [Member] | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
60 - 89 days | Financial Asset Originated [Member] | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,299	2,100
90 Days | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	13,643	12,848
90 Days | Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	401	0
90 Days | Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	140	312
90 Days | Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	541	312
90 Days | Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	20	171
90 Days | Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,963	1,910
90 Days | Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	210	301
90 Days | Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2	0
90 Days | Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2	0
90 Days | Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
90 Days | Acquired Loans | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,736	2,694
90 Days | Financial Asset Originated [Member] | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	725	0
90 Days | Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	6,418	6,492
90 Days | Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,143	6,492
90 Days | Financial Asset Originated [Member] | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	988	706
90 Days | Financial Asset Originated [Member] | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,126	2,408
90 Days | Financial Asset Originated [Member] | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	410	395
90 Days | Financial Asset Originated [Member] | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	220	105
90 Days | Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	240	153
90 Days | Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	20	48
90 Days | Financial Asset Originated [Member] | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
90 Days | Financial Asset Originated [Member] | Total loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 10,907	$ 10,154

Loans (Loans By Risk Category)

Loans (Loans By Risk Category) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 2,707,727	$ 2,357,137
Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,707,727	2,357,137
Pass Rated (Grades 1 - 4) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,422,435	1,303,122
Special Mention (Grade 5) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	69,645	44,038
Substandard (Grade 6) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	48,526	46,164
Doubtful (Grade 7) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	532	216
Not Rated | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,166,589	963,597
Financial Asset Originated [Member] | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	103,562	107,118
Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	630,720	595,447
Financial Asset Originated [Member] | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	734,282	702,565
Financial Asset Originated [Member] | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	510,591	438,051
Financial Asset Originated [Member] | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	299,768	304,523
Financial Asset Originated [Member] | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	92,892	88,902
Financial Asset Originated [Member] | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	396,701	340,390
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	469,302	407,400
Financial Asset Originated [Member] | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	72,601	67,010
Financial Asset Originated [Member] | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	649	849
Financial Asset Originated [Member] | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,107,484	1,942,290
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	101,274	100,409
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	603,723	561,320
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	704,997	661,729
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	459,927	420,477
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	14,483	17,896
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	453	454
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	45	55
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	84	88
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	39	33
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Pass Rated (Grades 1 - 4) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,179,944	1,100,644
Financial Asset Originated [Member] | Special Mention (Grade 5) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	5,502
Financial Asset Originated [Member] | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	13,992	17,189
Financial Asset Originated [Member] | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	13,992	22,691
Financial Asset Originated [Member] | Special Mention (Grade 5) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	42,036	13,062
Financial Asset Originated [Member] | Special Mention (Grade 5) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	537	1,000
Financial Asset Originated [Member] | Special Mention (Grade 5) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Special Mention (Grade 5) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	8
Financial Asset Originated [Member] | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	8
Financial Asset Originated [Member] | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Special Mention (Grade 5) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Special Mention (Grade 5) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	56,565	36,761
Financial Asset Originated [Member] | Substandard (Grade 6) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,496	754
Financial Asset Originated [Member] | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	13,005	16,938
Financial Asset Originated [Member] | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	14,501	17,692
Financial Asset Originated [Member] | Substandard (Grade 6) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	8,628	4,512
Financial Asset Originated [Member] | Substandard (Grade 6) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	12,506	11,371
Financial Asset Originated [Member] | Substandard (Grade 6) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Substandard (Grade 6) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Substandard (Grade 6) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Substandard (Grade 6) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	35,635	33,575
Financial Asset Originated [Member] | Doubtful (Grade 7) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	294	216
Financial Asset Originated [Member] | Doubtful (Grade 7) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Doubtful (Grade 7) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	294	216
Financial Asset Originated [Member] | Not Rated | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	792	453
Financial Asset Originated [Member] | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	792	453
Financial Asset Originated [Member] | Not Rated | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Financial Asset Originated [Member] | Not Rated | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	271,948	274,040
Financial Asset Originated [Member] | Not Rated | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	92,439	88,448
Financial Asset Originated [Member] | Not Rated | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	396,656	340,327
Financial Asset Originated [Member] | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	469,218	407,304
Financial Asset Originated [Member] | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	72,562	66,977
Financial Asset Originated [Member] | Not Rated | Deposit account overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	649	849
Financial Asset Originated [Member] | Not Rated | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	835,046	771,094
Acquired Loans | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	13,050	8,319
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	191,993	165,120
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	205,043	173,439
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	41,188	34,493
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	308,178	184,864
Acquired Loans | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	42,961	20,575
Acquired Loans | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	161	329
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,873	1,476
Acquired Loans | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,712	1,147
Acquired Loans | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	600,243	414,847
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	10,138	8,267
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	175,375	149,486
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	185,513	157,753
Acquired Loans | Pass Rated (Grades 1 - 4) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	38,424	32,011
Acquired Loans | Pass Rated (Grades 1 - 4) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	18,477	12,543
Acquired Loans | Pass Rated (Grades 1 - 4) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	34	124
Acquired Loans | Pass Rated (Grades 1 - 4) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	4	12
Acquired Loans | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	43	47
Acquired Loans | Pass Rated (Grades 1 - 4) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	39	35
Acquired Loans | Pass Rated (Grades 1 - 4) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	242,491	202,478
Acquired Loans | Special Mention (Grade 5) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,280	0
Acquired Loans | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	8,450	6,527
Acquired Loans | Special Mention (Grade 5) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	9,730	6,527
Acquired Loans | Special Mention (Grade 5) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,400	157
Acquired Loans | Special Mention (Grade 5) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,950	593
Acquired Loans | Special Mention (Grade 5) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Special Mention (Grade 5) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	13,080	7,277
Acquired Loans | Substandard (Grade 6) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,632	52
Acquired Loans | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	8,070	9,107
Acquired Loans | Substandard (Grade 6) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	9,702	9,159
Acquired Loans | Substandard (Grade 6) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,364	2,325
Acquired Loans | Substandard (Grade 6) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	1,825	1,105
Acquired Loans | Substandard (Grade 6) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Substandard (Grade 6) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	12,891	12,589
Acquired Loans | Doubtful (Grade 7) | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	98	0
Acquired Loans | Doubtful (Grade 7) | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	98	0
Acquired Loans | Doubtful (Grade 7) | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	140	0
Acquired Loans | Doubtful (Grade 7) | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Doubtful (Grade 7) | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	238	0
Acquired Loans | Not Rated | Commercial real estate, construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	0	0
Acquired Loans | Not Rated | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	285,786	170,623
Acquired Loans | Not Rated | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	42,927	20,451
Acquired Loans | Not Rated | Consumer, indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	157	317
Acquired Loans | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,830	1,429
Acquired Loans | Not Rated | Consumer, direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	2,673	1,112
Acquired Loans | Not Rated | Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of deferred fees and costs	$ 331,543	$ 192,503

Loans (Schedule Of Impaired Loa

Loans (Schedule Of Impaired Loans) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Total loans
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 51,622	$ 44,230
Recorded Investment With Allowance	2,162	1,649
Recorded Investment Without Allowance	46,419	39,416
Total Recorded Investment	48,581	41,065
Related Allowance	577	339
Average Recorded Investment	42,267	41,811
Interest Income Recognized	1,457	1,926
Commercial real estate, construction
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,483	821
Recorded Investment With Allowance	0	0
Recorded Investment Without Allowance	2,396	754
Total Recorded Investment	2,396	754
Related Allowance	0	0
Average Recorded Investment	1,571	788
Interest Income Recognized	46	0
Commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	17,119	14,909
Recorded Investment With Allowance	269	14
Recorded Investment Without Allowance	15,710	13,606
Total Recorded Investment	15,979	13,620
Related Allowance	91	1
Average Recorded Investment	13,795	14,392
Interest Income Recognized	349	503
Commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	19,602	15,730
Recorded Investment With Allowance	269	14
Recorded Investment Without Allowance	18,106	14,360
Total Recorded Investment	18,375	14,374
Related Allowance	91	1
Average Recorded Investment	15,366	15,180
Interest Income Recognized	395	503
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,395	1,690
Recorded Investment With Allowance	899	951
Recorded Investment Without Allowance	1,286	572
Total Recorded Investment	2,185	1,523
Related Allowance	191	199
Average Recorded Investment	2,068	1,668
Interest Income Recognized	53	65
Residential real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	26,732	24,743
Recorded Investment With Allowance	234	477
Recorded Investment Without Allowance	24,913	22,626
Total Recorded Investment	25,147	23,103
Related Allowance	40	58
Average Recorded Investment	22,724	23,195
Interest Income Recognized	898	1,246
Home equity lines of credit
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,298	1,707
Recorded Investment With Allowance	486	81
Recorded Investment Without Allowance	1,784	1,624
Total Recorded Investment	2,270	1,705
Related Allowance	83	18
Average Recorded Investment	1,801	1,505
Interest Income Recognized	84	85
Consumer, indirect
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	518	273
Recorded Investment With Allowance	242	70
Recorded Investment Without Allowance	285	206
Total Recorded Investment	527	276
Related Allowance	140	26
Average Recorded Investment	242	184
Interest Income Recognized	16	20
Consumer, direct
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	77	87
Recorded Investment With Allowance	32	56
Recorded Investment Without Allowance	45	28
Total Recorded Investment	77	84
Related Allowance	32	37
Average Recorded Investment	66	79
Interest Income Recognized	11	7
Consumer, direct
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	595	360
Recorded Investment With Allowance	274	126
Recorded Investment Without Allowance	330	234
Total Recorded Investment	604	360
Related Allowance	172	63
Average Recorded Investment	308	263
Interest Income Recognized	$ 27	$ 27

Loans (Troubled Debt Restructur

Loans (Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)contract
Acquired Loans
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 326	$ 95	$ 1,430	$ 860
Financing Receivable, Modifications, Number of Contracts | contract	4	3	21	17
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 326	$ 95	$ 1,448	$ 873
Financing Receivable, Modifications, Post-Modification Recorded Investment	326	95	1,448	873
Acquired Loans | Commercial real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment			$ 47
Financing Receivable, Modifications, Number of Contracts | contract			1
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 50
Financing Receivable, Modifications, Post-Modification Recorded Investment			50
Acquired Loans | Commercial real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment				$ 265
Financing Receivable, Modifications, Number of Contracts | contract				2
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 271
Financing Receivable, Modifications, Post-Modification Recorded Investment				271
Acquired Loans | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 272	$ 61	$ 1,244	$ 263
Financing Receivable, Modifications, Number of Contracts | contract	3	2	15	8
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 272	$ 61	$ 1,258	$ 264
Financing Receivable, Modifications, Post-Modification Recorded Investment	272	61	1,258	264
Acquired Loans | Home equity lines of credit
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 54	$ 34	$ 139	$ 323
Financing Receivable, Modifications, Number of Contracts | contract	1	1	5	5
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 54	$ 34	$ 140	$ 328
Financing Receivable, Modifications, Post-Modification Recorded Investment	54	34	140	328
Acquired Loans | Consumer, direct
Financing Receivable, Modifications [Line Items]
Total Recorded Investment				$ 9
Financing Receivable, Modifications, Number of Contracts | contract				2
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 10
Financing Receivable, Modifications, Post-Modification Recorded Investment				10
Financial Asset Originated [Member]
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 768	$ 188	$ 1,871	$ 997
Financing Receivable, Modifications, Number of Contracts | contract	14	11	46	31
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 770	$ 191	$ 1,917	$ 1,099
Financing Receivable, Modifications, Post-Modification Recorded Investment	770	191	1,917	1,099
Financial Asset Originated [Member] | Commercial real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment				$ 14
Financing Receivable, Modifications, Number of Contracts | contract				1
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 14
Financing Receivable, Modifications, Post-Modification Recorded Investment				14
Financial Asset Originated [Member] | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 87	$ 90	$ 871	$ 478
Financing Receivable, Modifications, Number of Contracts | contract	3	1	9	7
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 87	$ 90	$ 871	$ 483
Financing Receivable, Modifications, Post-Modification Recorded Investment	87	90	871	483
Financial Asset Originated [Member] | Home equity lines of credit
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 531	$ 19	$ 562	$ 286
Financing Receivable, Modifications, Number of Contracts | contract	4	2	6	6
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 533	$ 22	$ 565	$ 291
Financing Receivable, Modifications, Post-Modification Recorded Investment	533	22	565	291
Financial Asset Originated [Member] | Consumer, direct
Financing Receivable, Modifications [Line Items]
Total Recorded Investment		$ 9	$ 18	$ 10
Financing Receivable, Modifications, Number of Contracts | contract		2	5	3
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 9	$ 27	$ 10
Financing Receivable, Modifications, Post-Modification Recorded Investment		9	27	10
Financial Asset Originated [Member] | Consumer, direct
Financing Receivable, Modifications [Line Items]
Total Recorded Investment		$ 43	$ 438	$ 96
Financing Receivable, Modifications, Number of Contracts | contract		7	31	14
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 43	$ 481	$ 137
Financing Receivable, Modifications, Post-Modification Recorded Investment		43	481	137
Financial Asset Originated [Member] | Consumer, indirect
Financing Receivable, Modifications [Line Items]
Total Recorded Investment	$ 150	$ 34	$ 420	$ 86
Financing Receivable, Modifications, Number of Contracts | contract	7	5	26	11
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 150	$ 34	$ 454	$ 127
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 150	34	$ 454	127
Financial Asset Originated [Member] | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Total Recorded Investment		$ 36		$ 123
Financing Receivable, Modifications, Number of Contracts | contract		1		3
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 36		$ 174
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 36		$ 174

Loans (Summary Of Activity In A

Loans (Summary Of Activity In Allowance For Loan And Lease Losses) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision for loan losses	$ 1,302	$ 1,086	$ 4,473	$ 2,657
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			7,797	7,172
Charge-offs			(849)	(25)
Recoveries			58	135
Net charge-offs			(791)	110
Provision for loan losses			960	252
Ending balance	7,966	7,534	7,966	7,534
Period-end amount allocated to:
Loans individually evaluated for impairment					$ 91	$ 136
Loans collectively evaluated for impairment					7,875	7,398
Ending balance	7,966	7,534	7,797	7,172	7,966	7,534
Total loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			18,685	18,196
Charge-offs			(4,242)	(3,276)
Recoveries			855	1,182
Net charge-offs			(3,387)	(2,094)
Provision for loan losses			4,426	2,775
Ending balance	19,724	18,877	19,724	18,877
Period-end amount allocated to:
Loans individually evaluated for impairment					577	747
Loans collectively evaluated for impairment					19,147	18,130
Ending balance	19,724	18,877	18,685	18,196	19,724	18,877
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			5,813	6,353
Charge-offs			(38)	(165)
Recoveries			10	1
Net charge-offs			(28)	(164)
Provision for loan losses			353	226
Ending balance	6,138	6,415	6,138	6,415
Period-end amount allocated to:
Loans individually evaluated for impairment					191	424
Loans collectively evaluated for impairment					5,947	5,991
Ending balance	6,138	6,415	5,813	6,353	6,138	6,415
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			904	982
Charge-offs			(293)	(451)
Recoveries			98	128
Net charge-offs			(195)	(323)
Provision for loan losses			290	265
Ending balance	999	924	999	924
Period-end amount allocated to:
Loans individually evaluated for impairment					40	151
Loans collectively evaluated for impairment					959	773
Ending balance	999	924	904	982	999	924
Home equity lines of credit
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			693	688
Charge-offs			(67)	(100)
Recoveries			12	9
Net charge-offs			(55)	(91)
Provision for loan losses			70	82
Ending balance	708	679	708	679
Period-end amount allocated to:
Loans individually evaluated for impairment					83	13
Loans collectively evaluated for impairment					625	666
Ending balance	708	679	693	688	708	679
Consumer, indirect
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			2,944	2,312
Charge-offs			(1,967)	(1,493)
Recoveries			403	598
Net charge-offs			(1,564)	(895)
Provision for loan losses			2,043	1,397
Ending balance	3,423	2,814	3,423	2,814
Period-end amount allocated to:
Loans individually evaluated for impairment					140	2
Loans collectively evaluated for impairment					3,283	2,812
Ending balance	3,423	2,814	2,944	2,312	3,423	2,814
Consumer, direct
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			464	518
Charge-offs			(297)	(275)
Recoveries			114	152
Net charge-offs			(183)	(123)
Provision for loan losses			114	46
Ending balance	395	441	395	441
Period-end amount allocated to:
Loans individually evaluated for impairment					32	21
Loans collectively evaluated for impairment					363	420
Ending balance	395	441	464	518	395	441
Deposit account overdrafts
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance			70	171
Charge-offs			(731)	(767)
Recoveries			160	159
Net charge-offs			(571)	(608)
Provision for loan losses			596	507
Ending balance	95	70	95	70
Period-end amount allocated to:
Loans individually evaluated for impairment					0	0
Loans collectively evaluated for impairment					95	70
Ending balance	$ 95	$ 70	$ 70	$ 171	$ 95	$ 70
Acquired Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract				2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment				$ 52
Acquired Loans | Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract				1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment				$ 44
Acquired Loans | Home equity lines of credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract			1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 10
Acquired Loans | Consumer, direct
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract				1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment				$ 8
Originated Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract			1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 10

Loans Summary of Activity in Al

Loans Summary of Activity in Allowance for Acquired Loan and Lease Losses (Details) - Financial Asset Acquired with Credit Deterioration - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 108	$ 90	$ 108	$ 233
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	47	25	47	(118)
Ending balance	$ 155	$ 115	$ 155	$ 115

Long-Term Borrowings (Details)

Long-Term Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Junior subordinated debt securities	$ 7,239	$ 7,107
Unamortized debt issuance costs	0	(27)
Total long-term borrowings	$ 111,099	$ 144,019
Long-term borrowings, Weighted-Average Rate	2.40%	2.11%
Federal Home Loan Bank Advances, Fixed Rate, Putable Non-amortizing [Member]
Debt Instrument [Line Items]
FHLB Advances	$ 85,000	$ 115,000
Federal Home Loan Bank, Advances, Weighted Average Interest Rate	2.05%	1.86%
Federal Home Loan Bank Advances, Fixed Rate, Amortizing [Member]
Debt Instrument [Line Items]
FHLB Advances	$ 18,860	$ 21,939
Federal Home Loan Bank, Advances, Weighted Average Interest Rate	2.09%	2.02%
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Weighted- Average Rate	7.34%	6.51%

Long-Term Borrowings (Narrative

Long-Term Borrowings (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Proceeds from long-term borrowings	$ 0	$ 54,403
Other Long-term Debt, Current	30,000
Unadvanced revolving line of credit	$ 15,000
Federal Home Loan Bank Advances, Fixed Rate, Amortizing [Member] | Minimum
Federal Home Loan Bank, advances, general debt obligations, disclosures, maturities period	2 years
Federal Home Loan Bank Advances, Fixed Rate, Amortizing [Member] | Maximum
Federal Home Loan Bank, advances, general debt obligations, disclosures, maturities period	13 years
Revolving Credit Facility [Member]
Debt Instrument, Basis Spread on Variable Rate	3.00%

Long-Term Borrowings (Maturity)

Long-Term Borrowings (Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Three months ending December 31, 2018	$ 1,455
Year ending December 31, 2019	3,512
Year ending December 31, 2020	25,564
Year ending December 31, 2021	21,979
Year ending December 31, 2022	16,521
Thereafter	42,068
Long-term borrowings	$ 111,099	$ 144,019
Nine months ending December 31, 2016	1.97%
Year ending December 31, 2017	1.56%
Year ending December 31, 2018	1.83%
Year ending December 31, 2019	1.74%
Year ending December 31, 2020	1.95%
Thereafter	3.35%
Total long-term borrowings	2.40%	2.11%

Stockholders' Equity (Stock Rol

Stockholders' Equity (Stock Rollforward) (Details)	9 Months Ended
	Sep. 30, 2018shares
Increase (Decrease) in Stock by Class [Roll Forward]
Common stock, beginning of period	18,952,385
Treasury stock, beginning of period	702,449
Changes related to stock-based compensation awards:
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	(102)
Changes related to deferred compensation plan for Boards of Directors:
Common stock, end of period	20,119,194
Treasury stock, end of period	608,379
Common Stock
Increase (Decrease) in Stock by Class [Roll Forward]
Common stock, beginning of period	18,952,385
Changes related to stock-based compensation awards:
Cancellation of restricted common shares	0
Changes related to deferred compensation plan for Boards of Directors:
Common shares issued under dividend reinvestment plan	14,098
Common stock, end of period	20,119,194
Treasury Stock
Increase (Decrease) in Stock by Class [Roll Forward]
Treasury stock, beginning of period	702,449
Changes related to stock-based compensation awards:
Release of restricted common shares	30,808
Cancellation of restricted common shares	1,961
Grant of common shares	(16,544)
Changes related to deferred compensation plan for Boards of Directors:
Purchase of treasury stock	4,646
Disbursed out of treasury stock	(2,089)
Common shares issued under compensation plan for Boards of Directors	(3,088)
Common shares issued under employee stock purchase plan	(5,186)
Treasury stock, end of period	609,250
ASB Financial Corp. [Member] | Common Stock
Changes related to deferred compensation plan for Boards of Directors:
Issuance of common shares related to the acquisition of ASB Financial Corp.	1,152,711
Restricted Shares | Treasury Stock
Changes related to stock-based compensation awards:
Grant of common shares	(103,605)

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Equity [Abstract]
Cash dividends declared per common share	$ 0.28	$ 0.28	$ 0.26	$ 0.22000	$ 0.20	$ 0.20	$ 0.82	$ 0.62
Preferred stock - shares authorized	50,000						50,000		50,000
Preferred stock - shares issued	0						0		0

Stockholders' Equity (Accumulat

Stockholders' Equity (Accumulated Other Comprehensive (Loss) Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive (Loss) Income [Roll Forward]
Unrealized Loss on Securities			$ (2,088)
Realized gain on sale of securities, net of tax			115
Amounts reclassified out of accumulated other comprehensive loss per ASU 2016-01 (a)	$ 0	$ 0	(5,020)	$ 0
Other comprehensive (loss) income, net of reclassifications and tax			(13,629)
Unrealized Loss on Securities	(20,622)		(20,622)
Unrecognized Net Pension and Postretirement Costs			(4,256)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax			139
Other comprehensive (loss) income, net of reclassifications and tax			993
Unrecognized Net Pension and Postretirement Costs	(3,124)		(3,124)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			1,129
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	514	$ (41)	2,027	$ (541)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	3,156		3,156
Accumulated Other Comprehensive Loss			(5,215)
Other Comprehensive Income (Loss), Reclassification Adjustment in Net Income, Net of Tax			115
Other Comprehensive Income (Loss), Settlement and Curtailment Costs of Pension and Other Postretirement Benefit Plan Valuation, Net of Tax			139
Other comprehensive (loss) income, net of reclassifications and tax			(10,609)
Accumulated Other Comprehensive Loss	$ (20,590)		$ (20,590)

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets					$ 8,493
Components of net periodic benefit costs:
Defined benefit plan assumptions, expected return on plan assets					7.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				35.00%
Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 3,200
Defined Benefit Plan, Benefit Obligation					$ 12,991
Components of net periodic benefit costs:
Interest cost	$ 104	$ 112	314	$ 338
Expected return on plan assets	(147)	(138)	(440)	(415)
Amortization of net loss	29	26	84	77
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	176
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement		0	0	0
Net periodic benefit/cost	162	0	(42)	0
Defined Benefit Plan, Funded (Unfunded) Status of Plan					(4,498)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax					$ 5,458
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate					3.40%
Other Postretirement Benefit Plans, Defined Benefit
Components of net periodic benefit costs:
Interest cost	0	1	2	3
Amortization of net loss	(1)	(1)	(4)	(5)
Net periodic benefit/cost	(1)	$ 0	$ (2)	$ (2)
Other Postretirement Benefit Plans, Defined Benefit | Employees Hired before January 1, 2003
Components of net periodic benefit costs:
Benefit based on highest average salary for number of consecutive years			5 years
Number of years for consecutive years calculation			10 years
Other Postretirement Benefit Plans, Defined Benefit | Employees Hired on or after January 1, 2003
Components of net periodic benefit costs:
Percent of annual salary to calculate benefit			2.00%
Before Settlement [Member] | Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Benefit Obligation	12,006		$ 12,006
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets	12,006		12,006
Components of net periodic benefit costs:
Defined Benefit Plan, Funded (Unfunded) Status of Plan	0		0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	$ 4,196		$ 4,196
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.00%		4.00%
Defined benefit plan assumptions, expected return on plan assets	7.50%		7.50%
Impact of Settlement [Member] | Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets	$ (510)		$ (510)
Components of net periodic benefit costs:
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	(510)
Defined Benefit Plan, Funded (Unfunded) Status of Plan	0		0
After Settlement [Member] | Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Benefit Obligation	11,496		11,496
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets	11,496		11,496
Components of net periodic benefit costs:
Defined Benefit Plan, Funded (Unfunded) Status of Plan	0		0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	$ 4,020		$ 4,020
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.00%		4.00%
Defined benefit plan assumptions, expected return on plan assets	7.50%		7.50%

Earnings Per Common Share (Calc

Earnings Per Common Share (Calculations of Basic and Diluted Earnings per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Distributed earnings allocated to shareholders	$ 5,409	$ 3,972	$ 15,532	$ 11,184
Undistributed earnings allocated to shareholders	7,246	6,865	16,638	18,134
Net earnings allocated to shareholders	$ 12,655	$ 10,837	$ 32,170	$ 29,318
Weighted-average number of common shares outstanding - basic	19,325,457	18,056,202	18,875,290	18,043,692
Effect of potentially dilutive shares	141,408	157,331	128,797	156,267
Total weighted-average diluted shares outstanding	19,466,865	18,213,533	19,004,087	18,199,959
Earnings per common share - basic	$ 0.65	$ 0.60	$ 1.70	$ 1.62
Earnings per common share - diluted	$ 0.65	$ 0.60	$ 1.69	$ 1.61
Anti-dilutive shares excluded from computation of EPS	5,541	163	2,193	270

Financial Instruments with Of_2

Financial Instruments with Off- Balance Sheet Risk (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Derivative [Line Items]
Interest Rate Derivative Assets, at Fair Value	$ 8.8				$ 4.6
Interest Rate Derivative Liabilities, at Fair Value	$ 4.9				3.2
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge	10 years
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	$ 4	$ 0
Reclassifications into earnings on cash flow hedge	0
Fair Value of Interest Rate Swaps	5.6				3
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 100		$ 10
Derivative, Number of Instruments Held | contract	12
Interest Rate Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 449.3				$ 363.3
ASB Financial Corp. [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount				$ 7
Effective Derivative [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | contract	10
Derivative Not In Effect [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | contract	2

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2018	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense related to unvested awards, amount		$ 2,700
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		1 year 11 months
Maximum Aggregate Value of Performance Unit Award Outstanding		$ 1,300
Unrestricted Stock Granted to Employees	11,112
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares authorized under the 2006 Equity Plan		500,000
SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period		3 years
Awards expiration period		10 years
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of awards released in period		$ 3,200	$ 900
Restricted Shares | Employees | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards expiration period		1 year
Restricted Shares | Employees | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards expiration period		3 years
2006 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under 2006 Equity Plan		891,340
Time-Based Vesting | Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awarded		18,729
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		18,729
Performance-Based Vesting | Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awarded		84,876
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		84,876
Director [Member] | Time-Based Vesting | Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	3,600
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	$ 388
Treasury Stock | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	$ 128

Stock-Based Compensation (Stock

Stock-Based Compensation (Stock Appreciation Rights) (Details) - SARs - $ / shares	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	0	314
Shares exercisable (in shares)	0
Shares outstanding, weighted-average exercise price (in dollars per share)	$ 0	$ 23.77
Shares exercisable, weighted-average exercise price (in dollars per share)	$ 0
Forfeited	314
Forfeited	$ 23.77

Stock-Based Compensation (Restr

Stock-Based Compensation (Restricted Shares) (Details) - Restricted Shares	9 Months Ended
	Sep. 30, 2018$ / sharesshares
Time-Based Vesting
Number of Shares (in shares)
Outstanding at January 1 | shares	33,082
Awarded | shares	18,729
Released | shares	7,000
Forfeited | shares	0
September 30, 2018 | shares	44,811
Weighted - Average Grant Date Fair Value (in dollars per share)
Outstanding at January 1 | $ / shares	$ 22.85
Awarded | $ / shares	36.70
Released | $ / shares	24.49
Forfeited | $ / shares	0
September 30, 2018 | $ / shares	$ 28.38
Performance-Based Vesting
Number of Shares (in shares)
Outstanding at January 1 | shares	176,218
Awarded | shares	84,876
Released | shares	83,311
Forfeited | shares	1,961
September 30, 2018 | shares	175,822
Weighted - Average Grant Date Fair Value (in dollars per share)
Outstanding at January 1 | $ / shares	$ 25.50
Awarded | $ / shares	35.43
Released | $ / shares	23.62
Forfeited | $ / shares	34.39
September 30, 2018 | $ / shares	$ 31.09

Stock-Based Compensation (Sto_2

Stock-Based Compensation (Stock-Based Compensation and Related Tax Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total stock-based compensation expense	$ 564	$ 351	$ 2,174	$ 1,362
Recognized tax benefit	(119)	(123)	(457)	(477)
Net expense recognized	$ 445	$ 228	$ 1,717	$ 885

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Cumulative Effect on Retained Earnings, Net of Tax			$ 3,100
Insurance income	$ 3,388	$ 3,345	11,412	$ 10,861
Accrued expenses and other liabilities	49,747		49,747			$ 39,254
Retained earnings (b)	152,976		152,976			134,362
Other non-interest income (a)	391	383	2,143	1,499
Deferred Revenue	4,554		4,554		$ 4,700	$ 4,700
Deferred Revenue, Additions			4,362
Deferred Revenue, Revenue Recognized			(4,508)
Commission and fees from sale of insurance policies	3,159		9,541
Fees related to third party insurance administration services	131		423
Performance-based insurance commissions	98		1,448
Interchange electronic banking income	2,464		7,248
Promotional and usage electronic banking income	426		1,212
Ongoing maintenance fees for deposit accounts	691		2,012
Transactional-based fees for deposit accounts	1,961		5,148
Transactional-based fees included in other non-interest income	228		772
Revenue from Contract with Customer, Excluding Assessed Tax	12,623		37,831
Accounting Standards Update 2014-09 [Member]
Cumulative Effect on Retained Earnings, Net of Tax			3,100
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Accrued expenses and other liabilities	2,940		2,940
Retained earnings (b)	(2,940)		(2,940)
Other non-interest income (a)	101		146
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Insurance income	3,287		11,266
Accrued expenses and other liabilities	46,807		46,807
Retained earnings (b)	155,916		155,916
Transferred at Point in Time [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,642		7,985
Transferred over Time [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	9,981		29,846
Fiduciary and Trust [Member]
Revenue from Contract with Customer, Including Assessed Tax	3,110	2,838	9,410	8,497
Interest Rate Swap [Member] | transaction fee [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 355	$ 76	$ 617	$ 995

Acquisitions (Details)

Acquisitions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Apr. 13, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Loans held for sale	$ 4,776,000		$ 4,776,000				$ 2,510,000
Bank owned life insurance	68,439,000		68,439,000				62,176,000
Goodwill	151,673,000		151,673,000				$ 133,111,000
Business Combination, Acquired Receivables [Abstract]
Noninterest Expense	30,829,000	$ 26,558,000	95,021,000	$ 80,569,000
Net gain (loss) on asset disposals and other transactions	12,000	(25,000)	(319,000)	81,000
Salaries and employee benefit costs	17,908,000	15,141,000	51,923,000	45,686,000
Professional fees	1,395,000	1,393,000	6,135,000	4,532,000
Data processing and software expense	1,408,000	1,092,000	4,089,000	3,330,000
Other non-interest expense	2,713,000	$ 1,973,000	11,113,000	$ 6,211,000
FIRST PRESTONSBURG BANCSHARES INC. [Member]
Business Acquisition [Line Items]
Total consideration	45,400,000
Goodwill, Purchase Accounting Adjustments	250,000
ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Business Combination, number of shares electing cash consideration						31,763,000
Total consideration	41,500,000		41,535,000
Shares, Outstanding						1,979,034
Common stock election						1,947,271,000
Cash purchase price per share						$ 20
Number of common shares of Peoples issued for each common share of acquired company						0.592
Price per Peoples common share, based on closing date						$ 35.48
Common share consideration						$ 40,898,000
Cash in lieu of fractional common shares of Peoples						2,000
Total cash and cash equivalents						5,332,000
Loans held for sale						2,539,000
Bank premises and equipment, net of accumulated depreciation						3,320,000
Bank owned life insurance						4,803,000
Other intangible assets						2,639,000
Other assets						3,481,000
Total assets						279,142,000
Deposits						198,629,000
Short-term borrowings						54,824,000
Accrued expenses and other liabilities						2,716,000
Total liabilities						256,169,000
Net assets						22,973,000
Goodwill					$ 18,300,000	18,562,000
Business Combination, Acquired Receivables [Abstract]
Noninterest Expense	675,000		6,900,000
Net gain (loss) on asset disposals and other transactions	203,000
Salaries and employee benefit costs	466,000		2,400,000
Professional fees	31,000		742,000
Data processing and software expense	0		59,000
Marketing Expense	16,000		107,000
Other non-interest expense	162,000		3,600,000
Financial Asset Acquired and No Credit Deterioration | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Acquired Receivable, Fair Value						228,091,000
Business Combination, Acquired Receivables [Abstract]
Contractual cash flows						342,087,000
Certain Loans Acquired in Transfer, Nonaccretable Difference						59,967,000
Business Combination Acquired Receivables Expected Cash Flows						282,120,000
Business Combination Acquired Receivable Accretable Yield						54,029,000
Available-for-sale securities | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Acquired Receivable, Fair Value						18,155,000
Held-to-maturity securities | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Acquired Receivable, Fair Value						649,000
Investment in Federal Home Loan Bank Stock [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Acquired Receivable, Fair Value						1,596,000
Debt Securities [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Acquired Receivable, Fair Value						20,400,000
Loans [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Goodwill, Purchase Accounting Adjustments	$ 481,000
Acquired Receivable, Fair Value						236,628,000
Financial Asset Acquired with Credit Deterioration | ASB Financial Corp. [Member]
Business Combination, Acquired Receivables [Abstract]
Certain Loans Acquired in Transfer, Nonaccretable Difference						5,908,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition						19,031,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition						13,123,000
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield						2,047,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value						11,076,000
Acquired Loans | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Acquired Receivable, Fair Value						239,167,000
Non-interest-bearing deposits [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Deposits						29,487,000
Interest-bearing Deposits [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Deposits						169,142,000
Cash [Member]
Business Acquisition [Line Items]
Total consideration			$ 11,275,000
Cash consideration						$ 635,000
FIRST PRESTONSBURG BANCSHARES INC. [Member]
Business Acquisition [Line Items]
Number of common shares of Peoples issued for each common share of acquired company	12.512		12.512
Deposits	$ 244,000,000		$ 244,000,000
FIRST PRESTONSBURG BANCSHARES INC. [Member] | Loans [Member]
Business Acquisition [Line Items]
Acquired Receivable, Fair Value	139,000,000		139,000,000
Total assets	310,000,000		$ 310,000,000
Property, Plant and Equipment [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Goodwill, Purchase Accounting Adjustments	355,000
Other Assets [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Goodwill, Purchase Accounting Adjustments	34,000
Other Liabilities [Member] | ASB Financial Corp. [Member]
Business Acquisition [Line Items]
Goodwill, Purchase Accounting Adjustments	$ 158,000