Peoples Bancorp (PEBO) 10-K 26 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Feb. 25, 2016	Jun. 30, 2015
Entity Information [Line Items]
Entity Registrant Name	PEOPLES BANCORP INC.
Entity Central Index Key	318,300
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Amendment Flag	false
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		18,176,291
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Public Float			$ 414,006

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Cash and cash equivalents:
Cash and due from banks	$ 53,663	$ 42,230
Interest-bearing deposits in other banks	17,452	19,224
Total cash and cash equivalents	71,115	61,454
Available-for-sale investment securities, at fair value (amortized cost of $780,304 at December 31, 2015 and $632,967 at December 31, 2014)	784,701	636,880
Held-to-maturity investment securities, at amortized cost (fair value of $45,853 at December 31, 2015 and $48,442 at December 31, 2014)	45,728	48,468
Other investment securities, at cost	38,401	28,311
Total investment securities	868,830	713,659
Loans, net of deferred fees and costs	2,072,440	1,620,898
Allowance for loan losses	(16,779)	(17,881)
Net loans	2,055,661	1,603,017
Loans held for sale	1,953	4,374
Bank premises and equipment, net	53,487	40,335
Goodwill	132,631	98,562
Other intangible assets	16,986	10,596
Other assets	58,307	35,772
Total assets	3,258,970	2,567,769
Deposits:
Non-interest-bearing	717,939	493,162
Interest-bearing	1,818,005	1,439,912
Total deposits	2,535,944	1,933,074
Short-term borrowings	160,386	88,277
Long-term borrowings	113,670	179,083
Accrued expenses and other liabilities	29,181	27,217
Total liabilities	2,839,181	2,227,651
Stockholders’ Equity
Preferred stock, no par value, 50,000 shares authorized, no shares issued at December 31, 2015 and December 31, 2014	0	0
Common stock, no par value, 24,000,000 shares authorized, 18,931,200 shares issued at December 31, 2015 and 15,599,643 shares issued at December 31, 2014, including shares in treasury	343,948	265,742
Retained earnings	90,790	90,391
Accumulated other comprehensive loss, net of deferred income taxes	(359)	(1,301)
Treasury stock, at cost, 586,686 shares at December 31, 2015 and 590,246 shares at December 31, 2014	(14,590)	(14,714)
Total stockholders’ equity	419,789	340,118
Total liabilities and stockholders’ equity	$ 3,258,970	$ 2,567,769

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Available for sale securities, amortized cost	$ 780,304	$ 632,967
Held-to-maturity securities, fair value	$ 45,853	$ 48,442
Preferred stock, shares authorized	50,000	50,000
Preferred stock, shares issued	0	0
Common stock, shares authorized	24,000,000	24,000,000
Common stock, shares issued	18,931,200	15,426,973
Treasury stock, shares	586,688	590,246

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest Income:
Interest and fees on loans	$ 87,155	$ 61,541	$ 48,522
Interest and dividends on taxable investment securities	18,051	16,840	16,853
Interest on tax-exempt investment securities	2,992	1,810	1,600
Other interest income	135	9	96
Total interest income	108,333	80,200	67,071
Interest Expense:
Interest on deposits	6,206	6,106	7,052
Interest on short-term borrowings	182	146	114
Interest on long-term borrowings	4,333	4,442	4,520
Total interest expense	10,721	10,694	11,686
Net interest income	97,612	69,506	55,385
Provision for (recovery of) loan losses	14,097	339	(4,410)
Net interest income after provision for (recovery of) loan losses	83,515	69,167	59,795
Other Income:
Insurance income	13,783	13,604	12,201
Deposit account service charges	10,845	9,173	8,764
Trust and investment income	9,577	7,685	7,122
Electronic banking income	8,958	6,642	6,191
Mortgage banking income	1,317	1,237	1,759
Net gain on investment securities	729	398	489
Net loss on asset disposals and other transactions	(1,788)	(431)	(155)
Other non-interest income	2,961	1,712	1,183
Total other income	46,382	40,020	37,554
Other Expenses:
Salaries and employee benefit costs	59,216	46,593	36,472
Net occupancy and equipment expense	11,207	7,839	6,840
Professional fees	7,295	5,649	4,207
Electronic banking expense	5,300	4,529	3,586
Amortization of other intangible assets	4,077	1,428	807
Data processing and software expense	3,671	2,424	2,012
Marketing expense	2,838	2,299	2,301
Communication expense	2,286	1,642	1,339
FDIC insurance expense	2,084	1,260	1,036
Franchise tax expense	1,968	1,392	1,643
Foreclosed real estate and other loan expenses	1,276	789	654
Other non-interest expense	13,863	9,165	7,368
Total other expenses	115,081	85,009	68,265
Income before income taxes	14,816	24,178	29,084
Income tax expense	3,875	7,494	11,510
Net income	$ 10,941	$ 16,684	$ 17,574
Earnings per common share - basic	$ 0.62	$ 1.36	$ 1.65
Earnings per common share - diluted	$ 0.61	$ 1.35	$ 1.63
Weighted-average number of common shares outstanding - basic	17,555,140	12,183,352	10,581,222
Weighted-average number of common shares outstanding - diluted	17,687,795	12,306,224	10,679,417

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 10,941	$ 16,684	$ 17,574
Available-for-sale investment securities:
Gross unrealized holding gain (loss) arising in the period	1,232	19,326	(25,130)
Related tax (expense) benefit	(431)	(6,764)	8,795
Less: reclassification adjustment for net gain included in net income	729	398	489
Related tax expense	(255)	(139)	(171)
Net effect on other comprehensive income (loss)	327	12,303	(16,653)
Defined benefit plans:
Net gain (loss) arising during the period	373	(2,083)	3,788
Related tax (expense) benefit	(130)	729	(1,326)
Amortization of unrecognized loss and service cost on benefit plans	112	129	182
Related tax expense	(38)	(45)	(64)
Recognition of loss due to settlement and curtailment	459	1,400	270
Related tax expense	(161)	(490)	(95)
Net effect on other comprehensive income (loss)	615	(360)	2,755
Total other comprehensive income (loss), net of tax	942	11,943	(13,898)
Total comprehensive income	$ 11,883	$ 28,627	$ 3,676

Consolidated Statement of Share

Consolidated Statement of Shareholders' Equity - USD ($)	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Midwest Bancshares, Inc.	Midwest Bancshares, Inc.Common Stock	Ohio Heritage Bancorp, Inc.	Ohio Heritage Bancorp, Inc.Common Stock	North Akron Savings Bank	North Akron Savings BankCommon Stock	NB&T Financial Group, Inc. [Member]Common Stock
Balance at beginning of period at Dec. 31, 2012	$ 221,728,000	$ 167,039,000	$ 69,158,000	$ 654,000	$ (15,123,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,574,000		17,574,000
Other comprehensive income, net of tax	(13,898,000)			(13,898,000)
Cash dividends declared	(5,834,000)		(5,834,000)
Tax benefit from exercise of stock options	79,000	79,000
Reissuance of treasury stock for deferred compensation plan for Boards of Directors	(168,000)				(168,000)
Purchase of treasury stock	228,000				228,000
Common shares issued under dividend reinvestment plan	423,000	423,000
Common shares issued under compensation plan for Board of Directors	(179,000)	34,000			(213,000)
Stock-based compensation expense	1,362,000	1,362,000
Balance at end of period at Dec. 31, 2013	221,553,000	168,869,000	80,898,000	(13,244,000)	(14,970,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	16,684,000		16,684,000
Other comprehensive income, net of tax	11,943,000			11,943,000
Cash dividends declared	(7,191,000)		(7,191,000)
Stock Issued During Period, Value, Stock Options Exercised	72,000				72,000
Tax benefit from exercise of stock options	85,000	85,000
Reissuance of treasury stock for deferred compensation plan for Boards of Directors	(175,000)				(175,000)
Reissuance of treasury stock for common stock awards	0	(10,000)			10,000
Purchase of treasury stock	520,000				520,000
Common shares issued under dividend reinvestment plan	409,000	409,000
Common shares issued under compensation plan for Board of Directors	207,000	(14,000)			221,000
Stock-based compensation expense	2,111,000	1,813,000			298,000
Stock Issued During Period, Value, Acquisitions						$ 6,305,000	$ 6,305,000	$ 32,017,000	$ 32,017,000	$ 16,106,000	$ 16,106,000
Proceeds from Issuance of Private Placement	40,162,000	40,162,000
Balance at end of period at Dec. 31, 2014	340,118,000	265,742,000	90,391,000	(1,301,000)	(14,714,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,941,000		10,941,000
Other comprehensive income, net of tax	942,000			942,000
Cash dividends declared	(10,542,000)		(10,542,000)
Tax benefit from exercise of stock options	51,000	51,000
Reissuance of treasury stock for deferred compensation plan for Boards of Directors	(184,000)				(184,000)
Purchase of treasury stock	741,000				741,000
Common shares issued under dividend reinvestment plan	397,000	397,000
Common shares issued under compensation plan for Board of Directors	134,000	(43,000)			177,000
Stock-based compensation expense	1,843,000	1,843,000
Common shares issued under employee stock purchase plan	(435,000)	(69,000)			(504,000)
Stock Issued During Period, Value, Acquisitions											$ 76,027,000	$ 76,027,000
Balance at end of period at Dec. 31, 2015	$ 419,789,000	$ 343,948,000	$ 90,790,000	$ (359,000)	$ (14,590,000)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating activities:
Net income	$ 10,941,000	$ 16,684,000	$ 17,574,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion, net	18,503,000	13,174,000	16,110,000
Provision for (recovery of) loan losses	14,097,000	339,000	(4,410,000)
Bank owned life insurance income	(598,000)	(106,000)	(56,000)
Net gain on investment securities	(729,000)	(398,000)	(489,000)
Loss (gain) on debt extinguishment	520,000	(67,000)	0
Loans originated for sale	(53,570,000)	(51,458,000)	(68,323,000)
Proceeds from sales of loans	56,532,000	49,218,000	74,049,000
Net gains on sales of loans	(1,005,000)	(943,000)	(1,544,000)
Deferred income tax (benefit) expense	(1,582,000)	3,835,000	4,627,000
Decrease in accrued expenses	(4,412,000)	(631,000)	(13,000)
Decrease in interest receivable	704,000	139,000	313,000
Excess Tax Benefit from Share-based Compensation, Operating Activities	(51,000)	(85,000)	(79,000)
Increase (decrease) in other assets	4,623,000	(1,505,000)	8,058,000
Other, net	3,909,000	3,299,000	(5,353,000)
Net cash provided by operating activities	47,882,000	31,495,000	40,464,000
Available-for-sale investment securities:
Purchases	(196,599,000)	(143,184,000)	(223,979,000)
Proceeds from sales	57,415,000	108,092,000	125,658,000
Proceeds from principal payments, calls and prepayments	126,401,000	79,830,000	99,372,000
Held-to-maturity investment securities:
Purchases	0	(1,017,000)	(5,216,000)
Proceeds from principal payments	2,261,000	1,325,000	885,000
Net increase in loans	(77,893,000)	(76,100,000)	(109,609,000)
Net expenditures for premises and equipment	(9,429,000)	(7,105,000)	(6,604,000)
Proceeds from sales of other real estate owned	971,000	219,000	1,036,000
Proceeds from bank owned life insurance	0	6,322,000	43,100,000
Business combinations, net of cash received	97,277,000	17,081,000	(4,536,000)
(Investment in) return of limited partnership and tax credit funds	(1,514,000)	374,000	(120,000)
Net cash used in investing activities	(1,110,000)	(14,163,000)	(80,013,000)
Financing activities:
Net increase in non-interest-bearing deposits	99,341,000	18,367,000	61,935,000
Net decrease in interest-bearing deposits	(125,360,000)	(26,713,000)	(84,344,000)
Net increase (decrease) in short-term borrowings	72,109,000	(29,373,000)	65,821,000
Proceeds from long-term borrowings	0	5,269,000	0
Payments on long-term borrowings	(72,446,000)	(10,288,000)	(7,025,000)
Cash dividends paid on common shares	(10,065,000)	(6,767,000)	(5,419,000)
Purchase of treasury stock	(741,000)	(520,000)	(228,000)
Proceeds from issuance of common shares	0	40,242,000	8,000
Excess tax benefit from share-based payments	51,000	85,000	79,000
Net cash (used in) provided by financing activities	(37,111,000)	(9,698,000)	30,827,000
Net increase (decrease) in cash and cash equivalents	9,661,000	7,634,000	(8,722,000)
Cash and cash equivalents at beginning of period	61,454,000	53,820,000
Cash and cash equivalents at end of period	71,115,000	61,454,000	53,820,000
Supplemental cash flow information:
Interest paid	11,541,000	10,766,000	11,839,000
Income taxes paid	$ 672,000	$ 6,726,000	$ 7,473,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The accounting and reporting policies of Peoples Bancorp Inc. and 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.) conform to generally accepted accounting principles in the United States of America (“US GAAP”) and to general practices within the banking industry. The preparation of the financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Certain items in prior financial statements have been reclassified to conform to the current presentation, which had no impact on net income, comprehensive income or loss, net cash provided by operating activities or stockholders' equity. The following is a summary of significant accounting policies followed in the preparation of the financial statements: Consolidation: Peoples' Consolidated Financial Statements include subsidiaries in which Peoples has a controlling financial interest, principally defined as owning a voting interest greater than 50%. In addition, entities not controlled by voting interest or in which the equity investors do not bear the residual economic risks, but for which Peoples is the primary beneficiary are also consolidated. The Consolidated Financial Statements include the accounts of Peoples and its consolidated subsidiaries, Peoples Bank and Peoples Investment Company, along with their wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. 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. Included in interest-bearing deposits in other banks were $ 5.0 million and $3.5 million in funds at December 31, 2015 and 2014 , respectively, which were being used as collateral and not available for withdrawal. Investment Securities: Investment securities are recorded initially at cost, which includes premiums and discounts if purchased at other than par or face value. Peoples amortizes premiums and accretes discounts as an adjustment to interest income on a level yield basis. The cost of investment securities sold, and any resulting gain or loss, is based on the specific identification method and recognized as of the trade date. Management determines the appropriate classification of investment securities at the time of purchase. Held-to-maturity securities are those securities that Peoples has the positive intent and ability to hold to maturity and are recorded at amortized cost. Available-for-sale securities are those securities that would be available to be sold in the future in response to Peoples' liquidity needs, changes in market interest rates, and asset-liability management strategies, among other considerations. Available-for-sale securities are reported at fair value, with unrealized holding gains and losses reported in stockholders' equity as a separate component of other accumulated comprehensive income or loss, net of applicable deferred income taxes. Certain restricted equity 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 Federal Home Loan Bank of Cincinnati (the “FHLB”) and the Federal Reserve Bank of Cleveland (the "FRB"). Management systematically evaluates investment securities for other-than-temporary declines in fair value on a quarterly basis. This analysis requires management to consider various factors, which include (1) the duration and magnitude of the decline in value, (2) the financial condition of the issuer or issuers, and (3) the structure of the security. An impairment loss is recognized in earnings only when (1) Peoples intends to sell the debt security, (2) it is more likely than not that Peoples will be required to sell the security before recovery of its amortized cost basis, or (3) Peoples does not expect to recover the entire amortized cost basis of the security. In situations where Peoples intends to sell or when it is more likely than not that Peoples will be required to sell the security, the entire impairment loss must be recognized in earnings. In all other situations, only the portion of the impairment loss representing the credit loss must be recognized in earnings, with the remaining portion being recognized in stockholders' equity as a component of accumulated comprehensive income or loss, net of applicable deferred taxes. Fair Value Measurements: 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 investments, retained interests from securitizations, and certain collateralized debt obligations. Securities Sold Under Agreements to Repurchase: Peoples enters into sales of securities under agreements to repurchase (“Repurchase Agreements”) with customers and other financial service companies, which are considered financings. As such, these obligations are recorded as a liability on the Consolidated Balance Sheets and disclosed in Note 8 and Note 9. Securities pledged as collateral under Repurchase Agreements are included in investment securities on the Consolidated Balance Sheets and are disclosed in Note 3. The fair value of the collateral pledged to a third party is continually monitored and additional collateral is pledged or returned, as deemed appropriate. Loans: Loans originated that Peoples has the positive intent and ability to hold for the foreseeable future or to maturity or payoff are reported at the principal balance outstanding, net of deferred loan fees and costs and an allowance for loan losses. The foreseeable future is based upon current market conditions and business strategies, as well as balance sheet management and liquidity. As the conditions change, so may management's view of the foreseeable future. Net deferred loan costs were $ 3.3 million and $ 2.4 million at December 31, 2015 and 2014 , respectively. A loan is considered impaired when information and events indicate it is probable that collection of all contractual principal and interest payments is doubtful. Impairment is evaluated in total for smaller-balance loans of a similar nature, primarily consumer and residential real estate loans, and on an individual loan basis for all loans to borrowers with an aggregate unpaid principal balance in excess of $1 million on an annual basis for possible credit deterioration. This loan review process provides Peoples Bank with opportunities to identify potential problem loans and take proactive actions to assure repayment of the loan or minimize Peoples Bank's risk of loss, such as reviewing the relationship more frequently based upon the loan quality rating and aggregate debt outstanding. Upon detection of the reduced ability of a borrower to meet cash flow obligations, the loan is reviewed for possible downgrade or placement on nonaccrual status. Loan relationships whose aggregate debt to Peoples Bank is equal to or less than $1 million are reviewed on an event driven basis. Triggers for review include knowledge of adverse events affecting the business, receipt of financial statements indicating deteriorating credit quality and other events. Peoples typically places any loan deemed to be impaired on nonaccrual status and allocates a specific portion of the allowance for loan losses, if necessary, to reduce the net carrying value of the loan to its estimated net realizable value. Impaired loans, or portions thereof, are charged off when deemed uncollectable. Upon detection of the reduced ability of a borrower to meet cash flow obligations, consumer and residential real estate loans typically are charged down to the net realizable value, with the residual balance placed on nonaccrual status. Loans acquired in a business combination that have evidence of deterioration of credit quality, commonly referred to as "purchase credit impaired" loans, since origination and for which it is probable, at acquisition, that Peoples will be unable to collect all contractually required payments receivable are initially recorded at fair value (the present value of the amounts expected to be collected) with no valuation allowance. The difference between the undiscounted cash flows expected at acquisition and the investment in the loan is recognized as interest income on a level-yield method over the life of the loan. Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition are not recognized. Over the life of these acquired loans, management continues to monitor each acquired purchased credit impaired loan portfolio for changes in credit quality. Increases in expected cash flows subsequent to acquisition are recognized prospectively over their remaining life as a yield adjustment on the loans. Subsequent decreases in expected cash flows 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. These purchase credit impaired loans are considered to be accruing and performing even though collection of contractual payments on loans may be in doubt, as income continues to be accreted as long as expected cash flows can be reasonably estimated. Loans acquired in a business combination that are not impaired are recorded at fair value, and the difference between the acquisition date fair value and the contractual amounts due at the acquisition date represents the discounts (or premiums) to a loan's cost basis and are accreted (or amortized) to interest income over the loan's remaining life using the level yield method. Subsequent to the acquisition date, the methods utilized to estimate the required allowance for loan losses for these loans is similar to originated loans; however, Peoples records a provision for loan losses only when the required allowance exceeds the remaining discount. Loans Held-for-Sale: Loans originated and intended to be sold in the secondary market, generally one-to-four family residential loans, are carried at the lower of cost or estimated fair value determined on an aggregate basis. Gains and losses on sales of loans held for sale are included in mortgage banking income. Loans originated with the intent to be held in our portfolio are subsequently transferred to held-for-sale when a decision is made to sell these loans. At the time of a loan's transfer to the held-for-sale classification, the loan is recorded at the lower of cost or its fair value. Any reduction in the loan's value is reflected as a write-down of the recorded investment resulting in a new cost basis, with a corresponding charge against the allowance for loan losses. If the fair value of a loan classified as held-for-sale in subsequent periods is less than its cost basis, the carrying value of the loan is adjusted accordingly, with the corresponding loss recognized in earnings. Peoples enters into interest rate lock commitments with borrowers and best efforts commitments with investors on mortgage loans originated for sale into the secondary markets to manage the inherent interest rate and pricing risk associated with selling loans. The interest rate lock commitments generally terminate once the loan is funded, the lock period expires or the borrower decides not to contract for the loan. The best efforts commitments generally terminate once the loan is sold, the commitment period expires or the borrower decides not to contract for the loan. These commitments are considered derivatives which are generally accounted for by recognizing their estimated fair value on the Consolidated Balance Sheets as either a freestanding asset or a freestanding liability. The valuation of such commitments does not consider expected cash flows related to the servicing of the future loan. Management has determined these derivatives do not have a material effect on Peoples' financial position, results of operations or cash flows. Allowance for Loan Losses: The allowance for loan losses is a valuation reserve established through provisions for loan losses charged against income. The allowance for loan losses is maintained at a level that management deems sufficient to absorb probable losses inherent in the loan portfolio. Loans deemed to be uncollectable are charged against the allowance for loan losses, while recoveries of previously charged-off amounts are credited to the allowance for loan losses. The allowance for loan losses is comprised of specific valuation allowances for loans evaluated individually for impairment and general allocations for pools of homogeneous loans with similar risk characteristics and trends. Peoples' homogenous loan pools include similarly risk-graded commercial and industrial loans, similarly risk-graded commercial real estate loans, real estate construction loans (both commercial and residential), residential real estate loans, consumer home equity loans and other consumer loans. Management's evaluation of the appropriateness of the allowance for loan losses and the related provision for loan losses is based upon a quarterly analysis of the portfolio. While portions of the allowance for loan losses may be allocated to specific loans, the entire allowance for loan losses is available for any loan charged off by management. The allowance for loan losses related to specific loans is based on management's estimate of potential losses on impaired loans as determined by (1) the present value of expected future cash flows, (2) the fair value of collateral if the loan is determined to be collateral dependent, or (3) the loan's observable market price. The general allocations to specific loan pools are based on the historical loss rates for specific loan types and the internal risk grade, if applicable, adjusted for both internal and external qualitative risk factors. The calculation of historical loss rates for pools of similar loans with similar characteristics is based upon the proportion of actual charge-offs experienced to the total population of loans in the pool. The historical loss rates are periodically updated based on actual charge-off experience. The qualitative factors considered by management include, among other factors, (1) changes in local and national economic conditions, (2) changes in asset quality, (3) changes in loan portfolio volume, (4) the composition and concentrations of credit, (5) the impact of competition on loan structuring and pricing, (6) the impact of interest rate changes on portfolio risk, and (7) effectiveness of Peoples' loan policies, procedures and internal controls. The total allowance established for each homogenous loan pool represents the product of the historical loss rate and the total dollar amount of the loans in the pool. Peoples categorizes loans involving commercial borrowers into risk categories based upon an established grading matrix. This system is used to manage the risk within its commercial lending activities, evaluate changes in the overall credit quality of the loan portfolio and evaluate the appropriateness of the allowance for loan losses. Loan grades are assigned at the time a new loan or lending commitment is extended by Peoples and may be changed at any time when circumstances warrant. Peoples reviews, at least annually, all loan relationships with aggregate outstanding debt to Peoples of $1 million or more, and loan relationships with aggregate outstanding debt to Peoples of $5 million or more and adversely classified loans are generally reviewed on a quarterly basis. The primary factors considered when assigning a risk grade to a loan include (1) reliability and sustainability of the primary source of repayment, (2) past, present and projected financial condition of the borrower, and (3) current economic and industry conditions. Other factors that could influence the risk grade assigned include the type and quality of collateral and the strength of guarantors. The primary source of repayment for commercial real estate loans and commercial and industrial loans is normally the business's operating cash flow available to repay debt. Management's analysis of operating cash flow for commercial real estate loans secured by non-owner occupied properties takes into account factors such as rent rolls and vacancy statistics. Management's analysis of operating cash flow for commercial real estate loans secured by owner occupied properties and all commercial and industrial loans considers the profitability, liquidity and leverage of the business. The evaluation of construction loans is based largely on the borrower's ability to complete construction within the established budget. The primary factors considered when classifying consumer loans include the loan's past due status and declaration of bankruptcy by the borrower(s). The classification of residential real estate and home equity lines of credit also takes into account the current value of the underlying collateral. Troubled Debt Restructuring: The restructuring of a loan is considered a troubled debt restructuring ("TDR") if both (1) the borrower is experiencing financial difficulties and (2) the creditor has granted a concession. Loans acquired that are restructured after acquisition are not considered TDRs if the loans evidenced credit deterioration as of the acquisition date and are accounted for in pools of purchased credit impaired loans. 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 (1) the borrower is currently in payment default on any of the borrower's debt, (2) a payment default is probable in the foreseeable future without the modification, (3) the borrower has declared or is in the process of declaring bankruptcy, and (4) 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 debt, such as (1) a reduction in the interest rate for the remaining life of the debt, (2) an extension of the maturity date at an interest rate lower than the current market rate for new debt with similar risk, (3) a temporary period of interest-only payments, and (4) a reduction in the contractual payment amount for either a short period or the remaining term of the loan. All TDRs are considered impaired loans and are evaluated individually to determine if a write-down is required and if they should be on accrual or nonaccrual status. Bank Premises and Equipment: 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. Investments in Affordable Housing Limited Partnerships: Investments in affordable housing consist of investments in limited partnerships that operate qualified affordable housing projects or that invest in other limited partnerships formed to operate affordable housing projects. These investments are considered variable interest entities for which Peoples is not the primary beneficiary. Peoples generally utilizes the effective yield method to account for these investments with the tax credits, net of the amortization of the investment, reflected in the Consolidated Statements of Income as a reduction of income tax expense. The unamortized amount of the investments is recorded in other assets and totaled $ 3,000 and $ 45,000 at December 31, 2015 and 2014 , 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 Bank 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 costs to sell the property. Peoples had OREO totaling $ 0.7 million at December 31, 2015 and $ 0.9 million at December 31, 2014 . Business Combinations: Business combinations are accounted for using the acquisition method of accounting. Under this accounting method, the acquired company's net assets are recorded at fair value on the date of acquisition, and the results of operations of the acquired company are combined with Peoples' from the acquisition date forward. Costs related to the acquisition are expensed as incurred. The purchase price paid over the fair value of the net assets acquired (including intangible assets with finite lives) is recorded as goodwill. Goodwill and Other Intangible Assets: Goodwill represents the excess of the cost of an acquisition over the fair value of the net assets acquired in the business combination. Goodwill is not amortized but is tested for impairment when indicators of impairment exist, or at least annually on June 30. Based upon the most recently completed goodwill impairment test, Peoples concluded the recorded value of goodwill was not impaired as of December 31, 2015 , based upon the estimated fair value of Peoples' single reporting unit. Peoples' other intangible assets consist of customer relationship and core deposit intangible assets representing the net present value of future economic benefit to be earned from acquired customer relationships with definite useful lives. These intangible assets are amortized on an accelerated basis over their estimated lives ranging from 7 to 10 years. Servicing Rights: Servicing rights (“SRs”) represent the right to service loans sold to third-party investors. SRs are recognized separately as a servicing asset or liability whenever Peoples undertakes an obligation to service financial assets. SRs are reported in other intangible assets on the Consolidated Balance Sheets. Serviced loans are not included in the Consolidated Balance Sheets. Loan servicing income included in mortgage banking income includes servicing fees received from the third-party investors and certain charges collected from the borrowers. Peoples initially records SRs 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 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. Trust Assets Under Management: Peoples Bank manages certain assets held in a fiduciary or agency capacity for customers. These assets under management, other than cash on deposit at Peoples Bank, are not included in the Consolidated Balance Sheets since they are not assets of Peoples Bank. Revenue Recognition: Peoples recognizes revenues as it is earned based on contractual terms, or as services are provided and collectability is reasonably assured. Peoples’ principal source of revenue is interest income, which is recognized on an accrual basis primarily according to formulas in written contracts, such as loan agreements or securities contracts. Interest Income Recognition: Interest income on loans and investment securities is recognized by methods that result in level rates of return on principal amounts outstanding. Amortization of premiums is deducted from, and accretion of discounts is added to, the related interest income. Nonrefundable loan fees and direct loan costs are deferred and recognized over the life of the loan as an adjustment of the yield. Peoples discontinues the accrual of interest on all loans, whether or not such loans are considered past due, when management believes it is probable the borrower will be unable to meet its payment obligations as they become due, as well as when required by regulatory provisions. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest received on nonaccrual loans is included in income only if principal recovery is reasonably assured. A nonaccrual loan is restored to accrual status when it is brought current, has performed in accordance with contractual terms for a reasonable period of time, and the collectability of the total contractual principal and interest is no longer in doubt. Other Income Recognition: Service charges on deposits include cost recovery fees associated with services provided, such as overdraft and non-sufficient funds. Trust and investment income consists of revenue from fiduciary activities, which include fees for services such as asset management, recordkeeping, retirement services and estate management, and investment commissions and fees related to the sale of investments. Income from these activities is recognized at the time the related services are performed. Insurance income consists of commissions and fees from the sales of insurance policies and related insurance services. Insurance income is recognized when it is earned and can be reasonably estimated. Performance-based commissions from insurance companies are recognized when received and no contingencies remain. Income Taxes: Peoples and its subsidiaries file a consolidated federal income tax return. Deferred income tax assets and liabilities are provided for temporary differences between the tax basis of an asset or liability and its reported amount in the Consolidated Financial Statements at the statutory federal tax rate. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. The components of accumulated other comprehensive income or loss included in the Consolidated Statements of Stockholders' Equity have been computed based upon a 35% federal tax rate. A tax position is initially recognized in the financial statements when it is more likely than not the position will be sustained upon examination by the tax authorities. Such tax positions are initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with the tax authority assuming full knowledge of the position and all relevant facts. Penalties and interest incurred under the applicable tax law are classified as income tax expense. The amount of Peoples' valuation allowance and uncertain income tax positions and unrecognized benefits are disclosed in Note 12. Advertising Costs: Advertising costs are generally expensed as incurred. Earnings per Share: Basic and diluted earnings per common share (“EPS”) are calculated using the two-class method since Peoples has issued some share-based payment awards considered participating securities because they entitle holders the rights to dividends during the vesting term. The two-class method is an earnings allocation formula that determines net income per share for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. Basic earnings per common share is computed by dividing net earnings allocated to common shareholders by the weighted-average number of common shares outstanding. Diluted earnings per common share is computed by dividing net earnings allocated to common shareholders by the weighted-average number of common shares outstanding adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental common shares issuable upon exercise of outstanding stock options, stock appreciation rights and non-vested restricted common shares using the treasury stock method. Operating Segments: Peoples' business activities are currently confined to one reporting unit and reportable segment, which is community banking. As a community banking entity, Peoples offers its customers a full range of products including a complete line of banking, insurance, investment and trust solutions. Stock-Based Compensation: Compensation costs for stock options, restricted stock awards and stock appreciation rights are measured at the fair value of these awards on their grant date. Compensation expense is recognized over the required service period, generally the vesting period for stock options and stock appreciation rights and the restriction period for restricted stock awards. For all awards, only the expense for the portion of the awards expected to vest is recognized. For service-based awards, compensation expense for awards granted to employees who are eligible for retirement is recognized to the date the employee is first eligible to retire. 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. Unless otherwise discussed, management believes the impact of any recently issued standards, including those issued but not yet effective, will not have a material impact on Peoples financial statements taken as a whole. In September 2015, the FASB issued an accounting standards update 2015-16 - Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments. The simplification eliminates the requirement for an acquirer in a business comb

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Assets measured at fair value on a recurring basis comprised the following at December 31 : Fair Value Measurements at Reporting Date Using (Dollars in thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value 2015 Obligations of: U.S. Treasury and government agencies $ — $ — $ — $ — U.S. government sponsored agencies 2,966 — 2,966 — States and political subdivisions 114,726 — 114,726 — Residential mortgage-backed securities 632,293 — 632,293 — Commercial mortgage-backed securities 23,845 — 23,845 — Bank-issued trust preferred securities 4,635 — 4,635 — Equity securities 6,236 6,024 212 — Total available-for-sale securities $ 784,701 $ 6,024 $ 778,677 $ — 2014 Obligations of: U.S. Treasury and government agencies $ 1 $ — $ 1 $ — U.S. government sponsored agencies 5,950 — 5,950 — States and political subdivisions 64,743 — 64,743 — Residential mortgage-backed securities 527,291 — 527,291 — Commercial mortgage-backed securities 27,847 — 27,847 — Bank-issued trust preferred securities 5,645 — 5,645 — Equity securities 5,403 5,204 199 — Total available-for-sale securities $ 636,880 $ 5,204 $ 631,676 $ — Held-to-maturity securities reported at fair value comprised the following at December 31 : Fair Value at Reporting Date Using (Dollars in thousands) Quoted Prices in Active Markets for Identical Assets Significant Significant Unobservable Inputs Fair Value 2015 Obligations of: States and political subdivisions $ 4,221 $ — $ 4,221 $ — Residential mortgage-backed securities 35,196 — 35,196 — Commercial mortgage-backed securities 6,436 — 6,436 — Total held-to-maturity securities $ 45,853 $ — $ 45,853 $ — 2014 Obligations of: States and political subdivisions $ 4,282 $ — $ 4,282 $ — Residential mortgage-backed securities 36,740 — 36,740 — Commercial mortgage-backed securities 7,420 — 7,420 — Total held-to-maturity securities $ 48,442 $ — $ 48,442 $ — 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 inputs) or fair values determined by pricing models using a market approach that considers observable market data, such as interest rate volatilities, 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 it believes a material discrepancy in pricing exists. Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Financial assets measured at fair value on a non-recurring basis included the following: 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 market value provided by independent, licensed or certified appraisers (Level 3 inputs). At December 31, 2015 , impaired loans with an aggregate outstanding principal balance of $ 51.8 million were measured and reported at a fair value of $ 43.7 million . For the year ended December 31, 2015 , Peoples recognized losses of $ 1.6 million on impaired loans through the allowance for loan losses. The following table presents the fair values of financial assets and liabilities carried on Peoples’ Consolidated Balance Sheets, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis at December 31: 2015 2014 (Dollars in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Financial assets : Cash and cash equivalents $ 71,115 $ 71,115 $ 61,454 $ 61,454 Investment securities 868,830 868,955 713,659 713,633 Loans 2,057,614 2,018,482 1,607,391 1,581,813 Financial liabilities: Deposits $ 2,535,944 $ 2,540,131 $ 1,933,074 $ 1,938,021 Short-term borrowings 160,386 160,386 88,277 88,277 Long-term borrowings 113,670 117,299 179,083 183,878 The methodologies for estimating the fair value of financial assets and liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. 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 short-term borrowings. Peoples used the following methods and assumptions in estimating the fair value of the following financial instruments: Loans: 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 inputs). In the current whole loan market, financial investors are generally requiring a much higher rate of return than the return inherent in loans if held to maturity given the lack of market liquidity. This divergence accounts for the majority of the difference in carrying amount over fair value. 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 inputs). Long-term Borrowings: The fair value of long-term borrowings is estimated using discounted cash flow analysis based on rates currently available to Peoples for borrowings with similar terms (Level 2 inputs). Bank premises and equipment, customer relationships, deposit base, banking center networks, and other information required to compute Peoples’ aggregate fair value 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	12 Months Ended
	Dec. 31, 2015
Investments [Abstract]
Investment Securities	Investment Securities Available-for-sale The following table summarizes Peoples’ available-for-sale investment securities at December 31: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2015 Obligations of: U.S. Treasury and government agencies $ — $ — $ — $ — U.S. government sponsored agencies 2,908 58 — 2,966 States and political subdivisions 111,283 3,487 (44 ) 114,726 Residential mortgage-backed securities 635,504 4,905 (8,116 ) 632,293 Commercial mortgage-backed securities 23,770 119 (44 ) 23,845 Bank-issued trust preferred securities 5,146 — (511 ) 4,635 Equity securities 1,693 4,627 (84 ) 6,236 Total available-for-sale securities $ 780,304 $ 13,196 $ (8,799 ) $ 784,701 2014 Obligations of: U.S. Treasury and government agencies $ 1 $ — $ — $ 1 U.S. government sponsored agencies 5,836 114 — 5,950 States and political subdivisions 62,292 2,510 (59 ) 64,743 Residential mortgage-backed securities 529,245 5,910 (7,864 ) 527,291 Commercial mortgage-backed securities 28,021 112 (286 ) 27,847 Bank-issued trust preferred securities 6,132 3 (490 ) 5,645 Equity securities 1,440 4,044 (81 ) 5,403 Total available-for-sale securities $ 632,967 $ 12,693 $ (8,780 ) $ 636,880 Peoples’ investment in equity securities was comprised entirely of common stocks issued by various unrelated bank holding companies at both December 31, 2015 and 2014 . At December 31, 2015 , there were no securities of a single issuer that exceeded 10% of stockholders' equity. The gross gains and gross losses realized by Peoples from sales of available-for-sale securities for the years ended December 31 were as follows: (Dollars in thousands) 2015 2014 2013 Gross gains realized $ 795 $ 1,136 $ 3,358 Gross losses realized 66 738 2,869 Net gain realized $ 729 $ 398 $ 489 The cost of investment securities sold, and any resulting gain or loss, were 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 at December 31: 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 2015 Obligations of: States and political subdivisions $ 7,662 $ 38 8 $ 213 $ 6 1 $ 7,875 $ 44 Residential mortgage-backed securities 303,549 3,902 76 102,090 4,214 33 405,639 8,116 Commercial mortgage-backed securities 6,682 44 3 — — — 6,682 44 Bank-issued trust preferred securities 2,129 19 1 2,506 492 3 4,635 511 Equity securities 438 15 2 106 69 1 544 84 Total $ 320,460 $ 4,018 90 $ 104,915 $ 4,781 38 $ 425,375 $ 8,799 2014 Obligations of: States and political subdivisions $ 2,602 $ 12 4 $ 5,788 $ 47 8 $ 8,390 $ 59 Residential mortgage-backed securities 114,018 1,091 21 216,224 6,773 57 330,242 7,864 Commercial mortgage-backed securities — — — 19,404 286 4 19,404 286 Bank-issued trust preferred securities — — — 2,509 490 3 2,509 490 Equity securities 40 2 2 96 79 1 136 81 Total $ 116,660 $ 1,105 27 $ 244,021 $ 7,675 73 $ 360,681 $ 8,780 Management systematically evaluates available-for-sale investment securities for other-than-temporary declines in fair value on a quarterly basis. At December 31, 2015 , 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 December 31, 2015 and 2014 were attributable to changes in market interest rates and spreads since the securities were purchased. At December 31, 2015 , approximately 97% of the fair value of mortgage-backed securities that had been at an unrealized loss position for twelve months or more were issued by U.S. government sponsored agencies. The remaining 3% , or three positions, consisted of privately issued mortgage-backed securities with all of the underlying mortgages originated prior to 2004. Two of the three positions had a fair value of less than 90% of their book value, with an aggregate book and fair value of $0.7 million and $0.5 million , respectively. Management has 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. Furthermore, the unrealized losses with respect to the three bank-issued trust preferred securities that had been in an unrealized loss position for twelve months or more at December 31, 2015 were primarily attributable to the floating nature of those investments, the current interest rate environment and spreads within that sector. The table below presents the amortized cost, fair value and total weighted-average yield of available-for-sale securities by contractual maturity at December 31, 2015 . 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. Rates are calculated on a fully tax-equivalent basis using a 35% federal income tax rate. (Dollars in thousands) Within 1 Year 1 to 5 Years 5 to 10 Years Over 10 Years Total Amortized cost Obligations of: U.S. government sponsored agencies $ — $ 991 $ — $ 1,917 $ 2,908 States and political subdivisions 240 10,649 32,475 67,919 111,283 Residential mortgage-backed securities 1 13,480 50,013 572,010 635,504 Commercial mortgage-backed securities — — 19,994 3,776 23,770 Bank-issued trust preferred securities — — — 5,146 5,146 Equity securities 1,693 Total available-for-sale securities $ 241 $ 25,120 $ 102,482 $ 650,768 $ 780,304 Fair value Obligations of: U.S. government sponsored agencies $ — $ 1,000 $ — $ 1,966 $ 2,966 States and political subdivisions 247 10,972 33,438 70,069 114,726 Residential mortgage-backed securities 1 13,269 50,350 568,673 632,293 Commercial mortgage-backed securities — — 20,033 3,812 23,845 Bank-issued trust preferred securities — — — 4,635 4,635 Equity securities 6,236 Total available-for-sale securities $ 248 $ 25,241 $ 103,821 $ 649,155 $ 784,701 Total weighted-average yield 5.35 % 2.97 % 2.98 % 2.61 % 2.68 % Held-to-Maturity The following table summarizes Peoples’ held-to-maturity investment securities at December 31: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2015 Obligations of: States and political subdivisions $ 3,831 $ 394 $ (4 ) $ 4,221 Residential mortgage-backed securities 35,367 363 (534 ) 35,196 Commercial mortgage-backed securities 6,530 — (94 ) 6,436 Total held-to-maturity securities $ 45,728 $ 757 $ (632 ) $ 45,853 2014 Obligations of: States and political subdivisions $ 3,841 $ 448 $ (7 ) $ 4,282 Residential mortgage-backed securities 36,945 189 (394 ) 36,740 Commercial mortgage-backed securities 7,682 9 (271 ) 7,420 Total held-to-maturity securities $ 48,468 $ 646 $ (672 ) $ 48,442 There were no gross gains or gross losses realized by Peoples from sales of held-to-maturity securities for the years ended December 31, 2015 , 2014 and 2013. The following table presents a summary of held-to-maturity investment securities that had an unrealized loss at December 31: 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 2015 Obligations of: States and political subdivisions $ — $ — — $ 319 $ 4 1 $ 319 $ 4 Residential mortgage-backed securities 3,706 89 2 10,040 445 2 13,746 534 Commercial mortgage-backed securities 540 4 1 5,895 90 1 6,435 94 Total $ 4,246 $ 93 3 $ 16,254 $ 539 4 $ 20,500 $ 632 2014 Obligations of: States and political subdivisions $ — $ — — $ 323 $ 7 1 $ 323 $ 7 Residential mortgage-backed securities — — — 18,242 394 5 18,242 394 Commercial mortgage-backed securities — — — 6,356 271 1 6,356 271 Total $ — $ — — $ 24,921 $ 672 7 $ 24,921 $ 672 The table below presents the amortized cost, fair value and total weighted-average yield of held-to-maturity securities by contractual maturity at December 31, 2015 . 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. Rates are calculated on a fully tax-equivalent basis using a 35% federal income tax rate. (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 $ — $ 324 $ 976 $ 2,531 $ 3,831 Residential mortgage-backed securities — — 487 34,880 35,367 Commercial mortgage-backed securities — — — 6,530 6,530 Total held-to-maturity securities $ — $ 324 $ 1,463 $ 43,941 $ 45,728 Fair value Obligations of: States and political subdivisions $ — $ 319 $ 1,109 $ 2,793 $ 4,221 Residential mortgage-backed securities — — 483 34,713 35,196 Commercial mortgage-backed securities — — — 6,436 6,436 Total held-to-maturity securities $ — $ 319 $ 1,592 $ 43,942 $ 45,853 Total weighted-average yield — % 3.14 % 1.72 % 2.60 % 2.57 % Other Securities Peoples' other investment securities on the Consolidated Balance Sheets consist largely of shares of the FHLB and the FRB. Pledged Securities Peoples had pledged available-for-sale investment securities with a carrying value of $ 495.5 million and $ 352.8 million at December 31, 2015 and 2014 , respectively, and held-to-maturity investment securities with a carrying value of $ 21.4 million and $ 22.9 million at December 31, 2015 and 2014 , 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 $ 11.1 million and $ 13.5 million at December 31, 2015 and 2014 , respectively, and held-to-maturity securities with carrying values of $23.3 million and $24.5 million at December 31, 2015 and 2014 , respectively, to secure additional borrowing capacity at the FHLB and the FRB.

Loans

Loans	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Loans	Loans Peoples' loan portfolio has consisted 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 in a business combination. The major classifications of loan balances, excluding loans held for sale, were as follows at December 31: (Dollars in thousands) 2015 2014 Originated loans: Commercial real estate, construction $ 63,785 $ 37,901 Commercial real estate, other 471,184 434,660 Commercial real estate 534,969 472,561 Commercial and industrial 288,130 249,975 Residential real estate 288,783 254,169 Home equity lines of credit 74,176 62,463 Consumer 227,133 169,913 Deposit account overdrafts 1,448 2,933 Total originated loans $ 1,414,639 $ 1,212,014 Acquired loans: Commercial real estate, construction $ 12,114 $ 1,051 Commercial real estate, other 265,092 121,475 Commercial real estate 277,206 122,526 Commercial and industrial 63,589 30,056 Residential real estate 276,772 225,274 Home equity lines of credit 32,253 18,232 Consumer 7,981 12,796 Deposit account overdrafts — — Total acquired loans $ 657,801 $ 408,884 Total loans $ 2,072,440 $ 1,620,898 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, commonly referred to as "purchased credit impaired" loans. The carrying amounts of these loans included in the loan balances above are summarized as follows at December 31: (Dollars in thousands) 2015 2014 Commercial real estate $ 16,893 $ 7,762 Commercial and industrial 3,040 1,041 Residential real estate 27,155 15,183 Consumer 193 306 Total outstanding balance $ 47,281 $ 24,292 Net carrying amount $ 35,064 $ 19,067 Changes in the accretable yield for acquired purchased credit impaired loans the year ended December 31, 2015 were as follows: (Dollars in thousands) Accretable Yield Balance, December 31, 2014 $ 3,172 Additions: Reclassification from nonaccretable to accretable 2,093 NB&T Financial Group, Inc. 3,611 Accretion (1,834 ) Balance, December 31, 2015 $ 7,042 Cash flows expected to be collected on purchased credit impaired loans are estimated semi-annually by incorporating several key assumptions similar to those used in 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 amount of principal expected to be collected. In reforecasting future estimated cash flows, credit loss expectations are adjusted as necessary. Peoples has pledged certain loans secured by 1-4 family and multifamily residential mortgages under a blanket collateral agreement to secure borrowings from the FHLB. The amount of such pledged loans totaled $ 554.8 million and $ 457.1 million at December 31, 2015 and 2014 , respectively. Peoples also had pledged commercial loans to secure borrowings with the FRB. The outstanding balances of these loans totaled $ 195.5 million and $ 150.7 million at December 31, 2015 and 2014 , respectively. Related Party Loans In the normal course of its business, Peoples Bank has granted loans to certain directors and officers of Peoples Bancorp Inc., including their affiliates, families and entities in which they are principal owners. At December 31, 2015 , no related party loan was past due 90 or more days, renegotiated or on nonaccrual status. Activity in related party loans is presented in the table below. Other changes primarily consist of changes in related party status and new directors elected during the year. (Dollars in thousands) Balance, December 31, 2014 $ 15,192 New loans and disbursements 10,361 Repayments (6,915 ) Other changes (538 ) Balance, December 31, 2015 $ 18,100 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 accruing loans delinquent for 90 days or more were as follows at December 31: Accruing Loans 90+ Days Past Due Nonaccrual Loans (Dollars in thousands) 2015 2014 2015 2014 Originated loans: Commercial real estate, construction $ 921 $ — $ — $ — Commercial real estate, other 7,041 2,575 — — Commercial real estate 7,962 2,575 — — Commercial and industrial 480 1,286 680 — Residential real estate 3,057 3,049 169 818 Home equity lines of credit 321 341 — 20 Consumer 92 19 1 2 Total originated loans $ 11,912 $ 7,270 $ 850 $ 840 Acquired loans: Commercial real estate, construction $ — $ 96 $ — $ — Commercial real estate, other 469 9 2,425 567 Commercial real estate 469 105 2,425 567 Commercial and industrial 247 708 1,306 301 Residential real estate 798 304 1,353 1,083 Home equity lines of credit 98 19 35 — Consumer 7 — — 8 Total acquired loans $ 1,619 $ 1,136 $ 5,119 $ 1,959 Total loans $ 13,531 $ 8,406 $ 5,969 $ 2,799 The following table presents the aging of the recorded investment in past due loans and leases at December 31: Loans Past Due Current Loans Total Loans (Dollars in thousands) 30 - 59 days 60 - 89 days 90 + Days Total 2015 Originated loans: Commercial real estate, construction $ 913 $ — $ 8 $ 921 $ 62,864 $ 63,785 Commercial real estate, other 7,260 1,258 379 8,897 462,287 471,184 Commercial real estate 8,173 1,258 387 9,818 525,151 534,969 Commercial and industrial 1,437 215 767 2,419 285,711 288,130 Residential real estate 3,124 1,105 1,263 5,492 283,291 288,783 Home equity lines of credit 161 7 104 272 73,904 74,176 Consumer 1,387 250 32 1,669 225,464 227,133 Deposit account overdrafts — — — — 1,448 1,448 Total originated loans $ 14,282 $ 2,835 $ 2,553 $ 19,670 $ 1,394,969 $ 1,414,639 Acquired loans: Commercial real estate, construction $ — $ — $ 40 $ 40 $ 12,074 $ 12,114 Commercial real estate, other 1,592 352 2,730 4,674 260,418 265,092 Commercial real estate 1,592 352 2,770 4,714 272,492 277,206 Commercial and industrial 177 232 1,553 1,962 61,627 63,589 Residential real estate 4,910 2,480 1,745 9,135 267,637 276,772 Home equity lines of credit 318 20 95 433 31,820 32,253 Consumer 90 31 — 121 7,860 7,981 Deposit account overdrafts — — — — — — Total acquired loans $ 7,087 $ 3,115 $ 6,163 $ 16,365 $ 641,436 $ 657,801 Total loans $ 21,369 $ 5,950 $ 8,716 $ 36,035 $ 2,036,405 $ 2,072,440 2014 Originated loans: Commercial real estate, construction $ — $ — $ — $ — $ 37,901 $ 37,901 Commercial real estate, other 565 285 1,220 2,070 432,590 434,660 Commercial real estate 565 285 1,220 2,070 470,491 472,561 Commercial and industrial 17 18 1,245 1,280 248,695 249,975 Residential real estate 4,502 1,062 1,902 7,466 246,703 254,169 Home equity lines of credit 344 425 129 898 61,565 62,463 Consumer 1,136 157 2 1,295 168,618 169,913 Deposit account overdrafts 65 — — 65 2,868 2,933 Total originated loans $ 6,629 $ 1,947 $ 4,498 $ 13,074 $ 1,198,940 $ 1,212,014 Acquired loans: Commercial real estate, construction $ — $ — $ 96 $ 96 $ 955 $ 1,051 Commercial real estate, other 1,067 143 567 1,777 119,698 121,475 Commercial real estate 1,067 143 663 1,873 120,653 122,526 Commercial and industrial 46 6 815 867 29,189 30,056 Residential real estate 4,026 1,331 1,179 6,536 218,738 225,274 Home equity lines of credit 9 19 — 28 18,204 18,232 Consumer 245 27 8 280 12,516 12,796 Deposit account overdrafts — — — — — — Total acquired loans $ 5,393 $ 1,526 $ 2,665 $ 9,584 $ 399,300 $ 408,884 Total loans $ 12,022 $ 3,473 $ 7,163 $ 22,658 $ 1,598,240 $ 1,620,898 Credit Quality Indicators As discussed in Note 1, 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. “Watch” (grade 5): Loans in this risk grade are the equivalent of the regulatory definition of “Other Assets Especially Mentioned” classification. Loans in this 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 the 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 of 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, its classification as an estimate 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 each such 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 in 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 Peoples' loan portfolio based upon the most recent analysis performed at December 31: Pass Rated Watch Substandard Doubtful Not Rated Total Loans (Dollars in thousands) (Grades 1 - 4) (Grade 5) (Grade 6) (Grade 7) 2015 Originated loans: Commercial real estate, construction $ 62,225 $ — $ 913 $ — $ 647 $ 63,785 Commercial real estate, other 434,868 18,710 17,595 — 11 471,184 Commercial real estate 497,093 18,710 18,508 — 658 534,969 Commercial and industrial 259,183 23,601 5,344 — 2 288,130 Residential real estate 21,903 1,168 12,282 187 253,243 288,783 Home equity lines of credit 785 — 175 — 73,216 74,176 Consumer 208 — 3 — 226,922 227,133 Deposit account overdrafts — — — — 1,448 1,448 Total originated loans $ 779,172 $ 43,479 $ 36,312 $ 187 $ 555,489 $ 1,414,639 Acquired loans: Commercial real estate, construction $ 12,114 $ — $ — $ — $ — $ 12,114 Commercial real estate, other 233,630 13,866 17,521 75 — 265,092 Commercial real estate 245,744 13,866 17,521 75 — 277,206 Commercial and industrial 56,077 3,078 4,238 196 — 63,589 Residential real estate 18,027 1,409 1,786 — 255,550 276,772 Home equity lines of credit 316 — — — 31,937 32,253 Consumer 256 — — — 7,725 7,981 Deposit account overdrafts — — — — — — Total acquired loans $ 320,420 $ 18,353 $ 23,545 $ 271 $ 295,212 $ 657,801 Total loans $ 1,099,592 $ 61,832 $ 59,857 $ 458 $ 850,701 $ 2,072,440 2014 Originated loans: Commercial real estate, construction $ 37,637 $ — $ — $ — $ 264 $ 37,901 Commercial real estate, other 405,224 12,316 17,120 — — 434,660 Commercial real estate 442,861 12,316 17,120 — 264 472,561 Commercial and industrial 239,168 8,122 2,684 1 — 249,975 Residential real estate 21,296 1,195 11,601 56 220,021 254,169 Home equity lines of credit 767 — 965 — 60,731 62,463 Consumer 60 1 8 — 169,844 169,913 Deposit account overdrafts — — — — 2,933 2,933 Total originated loans $ 704,152 $ 21,634 $ 32,378 $ 57 $ 453,793 $ 1,212,014 Acquired loans: Commercial real estate, construction $ 955 $ — $ — $ — $ 96 $ 1,051 Commercial real estate, other 106,115 7,100 8,260 — — 121,475 Commercial real estate 107,070 7,100 8,260 — 96 122,526 Commercial and industrial 27,313 255 2,294 194 — 30,056 Residential real estate 13,458 833 1,540 — 209,443 225,274 Home equity lines of credit 98 — — — 18,134 18,232 Consumer 279 — — — 12,517 12,796 Deposit account overdrafts — — — — — — Total acquired loans $ 148,218 $ 8,188 $ 12,094 $ 194 $ 240,190 $ 408,884 Total loans $ 852,370 $ 29,822 $ 44,472 $ 251 $ 693,983 $ 1,620,898 Impaired Loans The following tables summarize loans classified as impaired at December 31: Unpaid Principal Balance Recorded Investment Total Recorded Investment Average Recorded Investment Interest Income Recognized With Without Related Allowance (Dollars in thousands) Allowance Allowance 2015 Commercial real estate, construction $ 957 $ — $ 957 $ 957 $ — $ 227 $ 3 Commercial real estate, other 23,430 6,396 12,775 19,171 1,363 13,071 815 Commercial real estate $ 24,387 $ 6,396 $ 13,732 $ 20,128 $ 1,363 $ 13,298 $ 818 Commercial and industrial 5,670 1,224 4,130 5,354 351 4,049 246 Residential real estate 31,304 370 28,834 29,204 106 26,785 1,354 Home equity lines of credit 425 — 419 419 — 325 18 Consumer 383 — 298 298 — 295 28 Total $ 62,169 $ 7,990 $ 47,413 $ 55,403 $ 1,820 $ 44,752 $ 2,464 2014 Commercial real estate, construction $ 9,914 $ — $ 9,909 9,909 $ — $ 4,378 $ 540 Commercial real estate, other 8,668 653 7,742 8,395 189 4,056 248 Commercial real estate $ 18,582 $ 653 $ 17,651 $ 18,304 $ 189 $ 8,434 $ 788 Commercial and industrial 3,747 1,945 1,767 3,712 816 1,414 73 Residential real estate 6,889 53 6,372 6,425 9 3,582 272 Home equity lines of credit 500 — 498 498 — 298 18 Consumer 391 — 386 386 — 221 24 Total $ 30,109 $ 2,651 $ 26,674 $ 29,325 $ 1,014 $ 13,949 $ 1,175 At December 31, 2015 , Peoples' impaired loans shown in the table above included loans that were classified as troubled debt restructurings. 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 debt, such as (i) a reduction in the interest rate for the remaining life of the debt, (ii) an extension of the maturity date at an interest rate lower than the current market rate for new debt 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 years ended December 31, 2015 and 2014 . Recorded Investment (1) (Dollars in thousands) Number of Contracts Pre-Modification Post-Modification Remaining Recorded Investment December 31,2015 Originated loans: Commercial real estate, other 5 $ 900 $ 900 $ 881 Commercial and industrial 4 834 834 834 Residential real estate 4 207 207 115 Home equity lines of credit 11 402 402 389 Consumer 12 95 95 94 Total 36 $ 2,438 $ 2,438 $ 2,313 Acquired loans: Residential real estate 4 $ 246 $ 246 $ 246 Home equity lines of credit 1 8 8 7 Total 5 $ 254 $ 254 $ 253 December 31,2014 Originated loans: Residential real estate 22 $ 996 $ 997 $ 967 Home equity lines of credit 12 238 238 232 Consumer 10 108 108 102 Total 44 $ 1,342 $ 1,343 $ 1,301 Acquired loans: Commercial real estate, construction 1 $ 96 $ 96 $ 96 Commercial and industrial 3 605 605 594 Residential real estate 4 235 235 234 Consumer 5 9 9 6 Total 13 $ 945 $ 945 $ 930 (1) 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 loans modified in a TDR during the year that subsequently defaulted (i.e., 90 days or more past due following a modification) during the years ended December 31, 2015 and 2014 : 2015 2014 (Dollars in thousands) Number of Contracts Recorded Investment (1) Impact on the Allowance for Loan Losses Number of Contracts Recorded Investment (1) Impact on the Allowance for Loan Losses Originated loans: Residential real estate 1 $ 151 $ — 1 $ 33 $ — Home equity lines of credit — — — 2 28 — Total 1 $ 151 $ — 3 $ 61 $ — Acquired loans: Residential real estate — $ — $ — 1 $ 56 $ — Total — $ — $ — 1 $ 56 $ — (1) 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 had no commitments to lend additional funds to the related borrowers whose loan terms have been modified in a TDR. Allowance for Loan Losses Changes in the allowance for loan losses in the periods ended December 31 , were as follows: (Dollars in thousands) Commercial Real Estate Commercial and Industrial Residential Real Estate Home Equity Lines of Credit Consumer Deposit Account Overdrafts Total Balance, January 1, 2015 $ 9,825 $ 4,036 $ 1,627 $ 694 $ 1,587 $ 112 $ 17,881 Charge-offs (242 ) (13,576 ) (628 ) (125 ) (1,353 ) (774 ) (16,698 ) Recoveries 104 98 315 119 755 171 1,562 Net (charge-offs) recoveries (138 ) (13,478 ) (313 ) (6 ) (598 ) (603 ) (15,136 ) (Recovery of) provision for loan losses (2,611 ) 14,824 (57 ) 44 982 612 13,794 Balance, December 31, 2015 $ 7,076 $ 5,382 $ 1,257 $ 732 $ 1,971 $ 121 $ 16,539 Period-end amount allocated to: Loans individually evaluated for impairment $ 1,363 $ 351 $ 106 $ — $ — $ — $ 1,820 Loans collectively evaluated for impairment 5,713 5,031 1,151 732 1,971 121 14,719 Balance, December 31, 2015 $ 7,076 $ 5,382 $ 1,257 $ 732 $ 1,971 $ 121 $ 16,539 Balance, January 1, 2014 $ 13,215 $ 2,174 $ 881 $ 343 $ 316 $ 136 $ 17,065 Charge-offs (203 ) (199 ) (478 ) (128 ) (1,191 ) (516 ) (2,715 ) Recoveries 2,060 77 169 36 697 153 3,192 Net recoveries (charge-offs) 1,857 (122 ) (309 ) (92 ) (494 ) (363 ) 477 (Recovery of) provision for loan losses (5,247 ) 1,984 1,055 443 1,765 339 339 Balance, December 31, 2014 $ 9,825 $ 4,036 $ 1,627 $ 694 $ 1,587 $ 112 $ 17,881 Period-end amount allocated to: Loans individually evaluated for impairment $ 189 $ 816 $ 9 $ — $ — $ — $ 1,014 Loans collectively evaluated for impairment 9,636 3,220 1,618 694 1,587 112 16,867 Balance, December 31, 2014 $ 9,825 $ 4,036 $ 1,627 $ 694 $ 1,587 $ 112 $ 17,881 The reduction in the allowance for originated loan losses allocated to commercial real estate was driven by decreased historical loss rates. Historical loss rates are calculated using charge-offs and recoveries within each portfolio over the past five years. The increase in provision for originated commercial and industrial loans during 2015 was primarily related to a specific allowance for one relationship which was charged off in 2015. The reduction in the allowance for originated residential real estate was driven by net recoveries in recent years reducing the historical loss rates. The changes in the home equity lines of credit and consumer categories of the allowance for originated loan losses and the related provision for originated loan losses recorded during 2015 were driven by net charge-off activity and increases in the size of the respective loan portfolios. Allowance for Acquired Loan Losses 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 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. Management reforecasts the estimated cash flows expected to be collected on acquired purchased credit impaired impaired loans semi-annually. 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 as of December 31: (Dollars in thousands) 2015 2014 2013 Purchased credit impaired loans: Balance, January 1 $ — $ — $ — Charge-offs (63 ) — — Recoveries — — — Net recoveries (charge-offs) (63 ) — — Provision for loan losses 303 — — Balance, December 31 $ 240 $ — $ — As of December 31, 2015 , the expected cash flows for acquired credit impaired loans had decreased from those as of the respective acquisition dates, resulting in Peoples recording a provision for loan losses with respect to those acquired loans. During 2014 and 2013, the discount recorded on acquired loans was in excess of the calculated allowance for loan losses for the acquired portfolios.

Bank Premises and Equipment

Bank Premises and Equipment	12 Months Ended
	Dec. 31, 2015
Bank Premises and Equipment [Abstract]
Bank Premises and Equipment	Bank Premises and Equipment The major categories of bank premises and equipment and accumulated depreciation at December 31 are summarized as follows: (Dollars in thousands) 2015 2014 Land $ 11,976 $ 7,612 Building and premises 58,607 48,402 Furniture, fixtures and equipment 25,487 22,323 Total bank premises and equipment 96,070 78,337 Accumulated depreciation (42,583 ) (38,002 ) Net book value $ 53,487 $ 40,335 Peoples depreciates its building and premises and furniture, fixtures and equipment over estimated useful lives generally ranging from 5 to 40 years and 2 to 10 years, respectively. Depreciation expense was $ 4.6 million , $ 3.0 million and $ 2.6 million , in 2015 , 2014 and 2013 , respectively. Leases Peoples leases certain banking facilities and equipment under various agreements with original terms providing for fixed monthly payments over periods generally ranging from two to ten years. Certain leases contain renewal options and rent escalation clauses calling for rent increases over the term of the lease. All leases which contain a rent escalation clause are accounted for on a straight-line basis. Rent expense on the leased properties and equipment was $ 988,000 , $ 951,000 , and $ 950,000 in 2015 , 2014 and 2013 , respectively. Peoples Insurance Agency, LLC ("Peoples Insurance") previously leased a property from certain of its managers; however, in 2014 this lease expired and was not renewed. Payments related to this lease totaled $ 64,000 and $ 151,000 in 2014 and 2013 , respectively. The terms of the lease were substantially the same as those offered for comparable transactions with non-related parties at the time the lease transaction was consummated. The future minimum payments under noncancellable operating leases with initial or remaining terms of one year or more consisted of the following at December 31, 2015 : (Dollars in thousands) Payments 2016 $ 916 2017 612 2018 486 2019 224 2020 58 Thereafter 272 Total future operating lease payments $ 2,568

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2015
Goodwill and Other Intangible Assets [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table details changes in the recorded amount of goodwill for the years ended December 31 : (Dollars in thousands) 2015 2014 Goodwill, beginning of year $ 98,562 $ 70,520 Acquired goodwill 34,069 28,042 Goodwill, end of year $ 132,631 $ 98,562 Peoples performed the required goodwill impairment tests and concluded there was no impairment in the recorded value of goodwill in 2015 , based upon the estimated fair value of the single reporting unit. At December 31, 2015 , Peoples completed the first step of the goodwill impairment test due to potential indicators impairment. Peoples utilized the Income Approach and Market Approach analysis in determining that the fair value of the reporting unit exceeded the carrying amount and that the goodwill of the reporting unit was not considered impaired. Other intangible assets Other intangible assets were comprised of the following at December 31: (Dollars in thousands) Core Deposits Customer Relationships Total 2015 Gross intangibles $ 7,013 $ 8,858 $ 15,871 Acquired intangibles 8,623 1,695 10,318 Accumulated amortization (4,396 ) (7,194 ) (11,590 ) Total acquired intangibles $ 11,240 $ 3,359 $ 14,599 Servicing rights 2,387 Total other intangibles $ 16,986 2014 Gross intangibles $ 2,226 $ 8,646 $ 10,872 Acquired intangibles 4,787 212 4,999 Accumulated amortization (1,156 ) (6,357 ) (7,513 ) Total acquired intangibles $ 5,857 $ 2,501 $ 8,358 Servicing rights 2,238 Total other intangibles $ 10,596 The following table details estimated aggregate future amortization expense of core deposit and customer relationship intangible assets at December 31, 2015 : (Dollars in thousands) Core Deposits Customer Relationships Total 2016 $ 3,114 $ 833 $ 3,947 2017 2,608 722 3,330 2018 2,098 606 2,704 2019 1,586 482 2,068 2020 1,071 352 1,423 Thereafter 763 364 1,127 Total $ 11,240 $ 3,359 $ 14,599 For further information regarding Peoples' acquisitions, refer to Note 17. The following is an analysis of activity of servicing rights for the years ended December 31: (Dollars in thousands) 2015 2014 2013 Balance, beginning of year $ 2,238 $ 2,295 $ 2,073 Amortization (662 ) (597 ) (652 ) Servicing rights originated 566 497 675 Servicing rights acquired 245 43 199 Balance, end of year $ 2,387 $ 2,238 $ 2,295 No valuation allowances were required at December 31, 2015 , 2014 and 2013 for Peoples’ servicing rights since the fair value equaled or exceeded the book value.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Deposit Disclosure	Deposits Peoples’ deposit balances were comprised of the following at December 31: (Dollars in thousands) 2015 2014 Retail certificates of deposit: $250,000 or more $ 62,541 $ 59,031 Less than $250,000 386,451 373,532 Retail certificates of deposit 448,992 432,563 Savings accounts 414,375 295,307 Money market deposit accounts 394,119 337,387 Governmental deposit accounts 276,639 161,305 Interest-bearing transaction accounts 250,023 173,659 Brokered certificates of deposits 33,857 39,691 Total interest-bearing deposits 1,818,005 1,439,912 Non-interest-bearing deposits 717,939 493,162 Total deposits $ 2,535,944 $ 1,933,074 The contractual maturities of certificates of deposits for each of the next five years and thereafter are as follows: (Dollars in thousands) Retail Brokered Total 2016 $ 261,907 $ 18,187 $ 280,094 2017 84,230 — 84,230 2018 46,106 1,147 47,253 2019 28,614 14,523 43,137 2020 26,773 — 26,773 Thereafter 1,362 — 1,362 Total deposits $ 448,992 $ 33,857 $ 482,849 Deposits from related parties approximated $43.0 million and $34.0 million at December 31, 2015 and 2014 , respectively.

Short-Term Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2015
Short-term Debt [Abstract]
Short-term Borrowings Disclosure	Short-Term Borrowings Peoples utilizes various short-term borrowings as sources of funds, which are summarized as follows at December 31: (Dollars in thousands) Retail Repurchase Agreements FHLB Advances Other Short-Term Borrowings 2015 Ending balance $ 84,386 $ 76,000 $ — Average balance 83,574 16,863 — Highest month-end balance 92,711 76,000 — Interest expense 140 42 — Weighted-average interest rate: End of year 0.17 % 0.35 % — % During the year 0.17 % 0.25 % — % 2014 Ending balance $ 73,277 $ 15,000 $ — Average balance 59,324 36,678 38 Highest month-end balance 76,459 108,000 — Interest expense 99 47 — Weighted-average interest rate: End of year 0.17 % 0.14 % — % During the year 0.17 % 0.13 % 0.75 % 2013 Ending balance $ 42,590 $ 71,000 $ — Average balance 37,077 44,127 90 Highest month-end balance 46,850 92,500 — Interest expense 58 55 1 Weighted-average interest rate: End of year 0.16 % 0.14 % — % During the year 0.16 % 0.12 % 0.74 % Peoples’ retail repurchase agreements consist of overnight agreements with Peoples’ commercial customers and serve as a cash management tool. The FHLB advances consist of overnight borrowings and other advances with an original maturity of one year or less. These advances, along with the long-term advances disclosed in Note 9, are collateralized by residential mortgage loans and investment securities. Peoples’ borrowing capacity with the FHLB is based on the amount of collateral pledged and the amount of FHLB common stock owned. Other short-term borrowings consist of federal funds purchased and advances from the Federal Reserve Discount Window. Federal funds purchased are short-term borrowings from correspondent banks that typically mature within one to ninety days. Peoples had available federal funds of $25 million from certain of its correspondent banks at December, 31,2015 with $20 million set to expire in early 2016. Interest on federal funds purchased is set daily by the correspondent bank based on prevailing market rates. The Federal Reserve Discount Window provides credit facilities to financial institutions, which are designed to ensure adequate liquidity by providing a source of short-term funds. Discount Window advances are typically overnight and must be secured by collateral acceptable to the lending Federal Reserve Bank. On December 19, 2012, Peoples obtained a $5 million revolving credit loan from an unaffiliated financial institution. On August 4, 2014, the revolving credit loan amount was increased to $10 million and on December 17, 2015, the revolving credit loan amount increased to $15 million , with a maturity date of December 15, 2016. This loan bears interest at a fixed per annum rate equal to 3% plus the one-month LIBOR rate, to be reset monthly. This revolving credit loan is subject to the same covenants as detailed in Note 9 for the term loan. At December 31, 2015 and 2014 , this revolving credit loan had no outstanding principal balance.

Long-Term Borrowings

Long-Term Borrowings	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Long-Term Borrowings	Long-Term Borrowings Long-term borrowings consisted of the following at December 31 : 2015 2014 (Dollars in thousands) Balance Weighted- Average Rate Balance Weighted- Average Rate FHLB putable non-amortizing, fixed-rate advances $ 50,000 3.32 % $ 83,995 3.30 % FHLB amortizing, fixed-rate advances 16,934 2.69 % 40,719 2.13 % Callable national market repurchase agreements 40,000 3.63 % 40,000 3.63 % Junior subordinated debt securities 6,736 1.83 % — — % Term note payable (parent company) — — % 14,369 3.50 % Long-term borrowings $ 113,670 3.25 % $ 179,083 3.12 % The putable, non-amortizing, fixed-rate FHLB advances have original maturities ranging from ten to twenty years that may be repaid prior to maturity, subject to termination fees. The FHLB has the option, solely at its discretion, to terminate the advance after the initial fixed rate periods ranging from three months to five years , 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. These advances require monthly interest payments, with no repayment of principal until the earlier of either an option exercise by the FHLB or the stated maturity. During 2015, Peoples repaid several FHLB advances including putable, non-amortizing, fixed-rate advances and amortizing, fixed-rate advances, totaling approximately $52.1 million that resulted in early termination fees of $520,000 , and had a weighted-average cost of 1.49% . The amortizing, fixed-rate FHLB advances have a fixed rate for the term of the loan, with maturities ranging from ten to twenty 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. As discussed in Note 8, long-term FHLB advances are collateralized by assets owned by Peoples. Peoples' callable national market repurchase agreements consist of agreements with unrelated financial service companies and have original maturities ranging from five to ten years . In general, these agreements may not be terminated by Peoples prior to maturity without incurring additional costs. The callable agreements contain call option features, in which the buyer has the right, at its discretion, to terminate the repurchase agreement after an initial period ranging from three months to five years . After the initial call period, the buyer has a one-time option to terminate the agreement. If the buyer exercises its option, Peoples would be required to repay the agreement in whole at the quarterly date. Peoples is required to make quarterly interest payments. On March 6, 2015, Peoples completed its acquisition of NB&T Financial Group, Inc. ("NB&T"), which included the assumption of Fixed/Floating Rate Junior Subordinated Debt Securities due 2037 (the "junior subordinated debt securities") at an acquisition-date fair value of $6.6 million held in a wholly-owned statutory trust whose common securities were wholly-owned by NB&T. The sole assets of the statutory trust are the junior subordinated debt securities and related payments. The junior subordinated debt securities and the back-up obligations, in the aggregate, constitute a full and unconditional guarantee of the obligations of the statutory trust under the Capital Securities held by third-party investors. Distributions on the Capital Securities are payable at the annual rate of 1.50% over the 3-month LIBOR. Distributions on the Capital Securities are included in interest expense in the Consolidated Financial Statements. These securities are considered Tier I capital (with certain limitations applicable) under current regulatory guidelines. The junior subordinated debt securities are subject to mandatory redemption, in whole or in part, upon repayment of the Capital Securities at maturity or their earlier redemption at the liquidation amount. Subject to prior approval of the Federal Reserve, the Capital Securities are redeemable prior to the maturity date of September 6, 2037, and are redeemable at par. Since September 6, 2012, the Capital Securities have been redeemable at par, subject to such approval. Distributions on the Capital Securities can be deferred from time to time for a period not to exceed 20 consecutive semi-annual periods. On December 18, 2012, Peoples entered into a Loan Agreement (the "Loan Agreement") to obtain a $24 million unsecured term loan from an unaffiliated financial institution with an original maturity of five years. On August 4, 2014, the Loan Agreement was amended (as amended, the "Amended Loan Agreement"). Under the Amended Loan Agreement, the interest rate on the term loan was reduced from 3.80% to 3.50% , and certain loan covenants related to the operations of Peoples' business were modified under the Amended Loan Agreement. Peoples was required to make quarterly principal and interest payments until the earlier of either full prepayment by Peoples or the stated maturity date. Concurrently, Peoples also entered into a Negative Pledge Agreement that precludes Peoples from selling, transferring, assigning, mortgaging, encumbering, pledging, or entering into a negative pledge agreement with respect to or otherwise disposing of any interest in the capital stock or other ownership interests owned by Peoples in its subsidiaries without prior written approval. Peoples is also subject to certain covenants under the Amended Loan Agreement, which include restrictions on ownership interests of its subsidiaries; cash and cash equivalents; transfers of criticized, classified or nonperforming assets; additional indebtedness; certain material transactions; and other financial covenants which include: • Peoples and Peoples Bank must maintain, as of the last day of each fiscal quarter, sufficient capital to qualify as "well capitalized" under applicable regulatory guidance; • Peoples Bank must maintain a "Total Risk-Based Capital Ratio" (as defined in the Loan Agreement) equal to or in excess of 12.50% , measured as of the last day of each fiscal quarter; • Peoples Bank must maintain a ratio of "Nonperforming Assets" to the sum of "Tangible Capital" plus the "Allowance for Loan Losses" (as each term is defined in the Loan Agreement) of not more than 20% , measured as of the last day of each fiscal quarter; • Peoples must maintain a "Fixed Charge Coverage Ratio" (as defined in the Amended Loan Agreement) that equals or exceeds 1.25 to 1.00, commencing with the quarter ended December 31, 2012 and for each quarter thereafter, with the items used in the ratio determined on a trailing 12-month basis; • issuance of dividends from Peoples Bank may not exceed the amount permitted by law without requiring regulatory approval; • minimum liquidity position of $2 million at Peoples Bancorp Inc.; and • Peoples Bank must maintain a ratio of "Allowance for Loan Losses" to "Nonperforming Loans" (as each term is defined in the Amended Loan Agreement) of not less than 70% measured as of the last day of each fiscal quarter. This note was prepaid on July 24, 2015 without penalties. As of December 31, 2015 , Peoples was in compliance with the applicable covenants imposed by the Amended Loan Agreement. At December 31, 2015 , the aggregate minimum annual retirements of long-term borrowings in future periods were as follows: (Dollars in thousands) Balance Weighted-Average Rate 2016 $ 2,945 2.38 % 2017 2,330 2.45 % 2018 82,390 3.47 % 2019 1,426 2.60 % 2020 3,901 3.36 % Thereafter 20,678 2.59 % Long-term borrowings $ 113,670 3.25 %

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity Attributable to Parent [Abstract]
Stockholders' Equity	Stockholders’ Equity The following table details the activity in Peoples’ common stock and treasury stock during the years ended December 31 : Common Stock Treasury Stock Shares at December 31, 2012 11,252,244 607,688 Changes related to stock-based compensation awards: Grant of restricted common shares 83,206 — Release of restricted common shares — 6,862 Cancellation of restricted common shares (3,096 ) — Changes related to deferred compensation plan for Board of Directors: Purchase of treasury stock — 3,652 Reissuance of treasury stock — (9,147 ) Common shares issued under dividend reinvestment plan 19,682 — Common shares issued under compensation plan for Board of Directors — (8,261 ) Shares at December 31, 2013 11,352,036 600,794 Changes related to stock-based compensation awards: Grant of restricted common shares 101,926 — Release of restricted common shares — 18,031 Cancellation of restricted common shares (6,062 ) — Exercise of stock options for common shares — (2,792 ) Reissuance of treasury stock for common stock awards — (12,030 ) Grant of common shares 100 — Changes related to deferred compensation plan for Board of Directors: Purchase of treasury stock — 4,236 Reissuance of treasury stock — (9,390 ) Common shares issued under dividend reinvestment plan 17,230 — Common shares issued under compensation plan for Board of Directors — (8,603 ) Issuance of common shares related to acquisitions: Midwest Bancshares, Inc. 256,282 — Ohio Heritage Bancorp, Inc. 1,364,735 — North Akron Savings Bank 665,570 — Common shares issued to institutional investors in private placement 1,847,826 — Shares at December 31, 2014 15,599,643 590,246 Changes related to stock-based compensation awards: Grant of restricted common shares 131,011 — Release of restricted common shares — 25,205 Cancellation of restricted common shares (28,219 ) — Grant of common shares 2,810 (100 ) Changes related to deferred compensation plan for Board of Directors: Purchase of treasury stock — 7,654 Reissuance of treasury stock — (9,642 ) Common shares issued under dividend reinvestment plan 18,257 — Common shares issued under compensation plan for Board of Directors — (10,231 ) Common shares issued under employee stock purchase plan — (16,446 ) Issuance of common shares related to acquisition of NB&T Financial Group, Inc. 3,207,698 — Shares at December 31, 2015 18,931,200 586,686 On November 3, 2015, Peoples announced that its Board of Directors approved and adopted a share repurchase program authorizing Peoples to purchase, from time to time, up to an aggregate of $20 million of its outstanding common shares. No common shares were purchased in 2015. As of February 24, 2016, Peoples repurchased 253,870 common shares at a cost of $4.5 million under the program. On March 6, 2015, Peoples completed its acquisition of NB&T, and issued 3,207,698 common shares reflecting $76.0 million of consideration, with the remainder paid in cash. Additional information regarding the NB&T acquisition can be found in Note 17. On August 7, 2014, Peoples announced the completion of the sale of 1,847,826 common shares at $23.00 per share to institutional investors through a private placement (the "Private Equity Issuance"). Peoples received net proceeds of $40.2 million from the sale, and used the proceeds, in part, to fund the cash consideration for the NB&T acquisition. 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 December 31, 2015, Peoples had no preferred shares issued or outstanding. Accumulated Other Comprehensive Income (Loss) The following details the change in the components of Peoples’ accumulated other comprehensive income (loss) for the years ended December 31 : (Dollars in thousands) Unrealized Gain (Loss) on Securities Unrecognized Net Pension and Postretirement Costs Accumulated Other Comprehensive Income (Loss) Balance, December 31, 2012 $ 6,892 $ (6,238 ) $ 654 Reclassification adjustments to net income: Realized gain on sale of securities, net of tax (318 ) — (318 ) Realized loss due to settlement and curtailment, net of tax — 175 175 Other comprehensive (loss), income net of reclassifications and tax (16,335 ) 2,580 (13,755 ) Balance, December 31, 2013 $ (9,761 ) $ (3,483 ) $ (13,244 ) Reclassification adjustments to net income: Realized gain on sale of securities, net of tax (259 ) — (259 ) Realized loss due to settlement and curtailment, net of tax — 910 910 Other comprehensive income (loss), net of reclassifications and tax 12,562 (1,270 ) 11,292 Balance, December 31, 2014 $ 2,542 $ (3,843 ) $ (1,301 ) Reclassification adjustments to net income: Realized gain on sale of securities, net of tax (474 ) — (474 ) Realized loss due to settlement and curtailment, net of tax — 298 298 Other comprehensive income, net of reclassifications and tax 801 317 1,118 Balance, December 31, 2015 $ 2,869 $ (3,228 ) $ (359 )

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [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 pay 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 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. Effective July 1, 2013, a participant in the pension plan who is employed by Peoples may elect to receive or to commence receiving such person's retirement benefits as of the later of such person's normal retirement date or the first day of the month first following the date such person makes an election to receive his or her retirement benefits. 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 the Peoples Bank 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 participate in a group Medicare supplemental plan. Peoples only pays 100% of the cost for those individuals who retired before January 1, 1993. For all others, the retiree is responsible for most, if not all, of the cost of health benefits. Peoples’ policy is to fund the cost of the benefits as they arise. The following tables provide a reconciliation of the changes in the plans’ benefit obligations and fair value of assets over the two-year period ended December 31, 2015 , and a statement of the funded status as of December 31, 2015 and 2014 : Pension Benefits Postretirement Benefits (Dollars in thousands) 2015 2014 2015 2014 Change in benefit obligation: Obligation at January 1 $ 13,695 $ 14,723 $ 152 $ 143 Interest cost 447 509 4 6 Plan participants’ contributions — — 65 46 Actuarial (gain) loss (948 ) 2,060 (10 ) 26 Benefit payments (148 ) (163 ) (85 ) (69 ) Settlements (1,081 ) (3,434 ) — — Obligation at December 31 $ 11,965 $ 13,695 $ 126 $ 152 Accumulated benefit obligation at December 31 $ 11,965 $ 13,695 $ — $ — Change in plan assets: Fair value of plan assets at January 1 $ 8,259 $ 11,287 $ — $ — Actual return on plan assets (91 ) 569 — — Employer contributions 185 — 20 23 Plan participants’ contributions — — 65 46 Benefit payments (148 ) (163 ) (85 ) (69 ) Settlements (1,081 ) (3,434 ) — — Fair value of plan assets at December 31 $ 7,124 $ 8,259 $ — $ — Funded status at December 31 $ (4,841 ) $ (5,436 ) $ (126 ) $ (152 ) Amounts recognized in Consolidated Balance Sheets: Accrued benefit liability (4,841 ) (5,436 ) (126 ) (152 ) Net amount recognized $ (4,841 ) $ (5,436 ) $ (126 ) $ (152 ) Amounts recognized in Accumulated Other Comprehensive Loss: Unrecognized prior service cost $ — $ — $ (2 ) $ (2 ) Unrecognized net loss 3,275 3,886 (47 ) (43 ) Total $ 3,275 $ 3,886 $ (49 ) $ (45 ) Weighted-average assumptions at year-end: Discount rate 3.90 % 3.50 % 3.90 % 3.50 % The estimated costs relating to Peoples’ pension benefits that will be amortized from accumulated other comprehensive loss into net periodic cost over the next fiscal year are $99,000 of net loss. Net Periodic Benefit Cost The following tables detail the components of the net periodic benefit cost for the plans at December 31: Pension Benefits Postretirement Benefits (Dollars in thousands) 2015 2014 2013 2015 2014 2013 Interest cost $ 447 $ 509 $ 543 $ 4 $ 6 $ 5 Expected return on plan assets (493 ) (589 ) (659 ) — — — Amortization of net loss (gain) 117 137 189 (5 ) (8 ) (7 ) Settlement of benefit obligation 459 1,400 270 — — — Net periodic benefit cost $ 530 $ 1,457 $ 343 $ (1 ) $ (2 ) $ (2 ) Weighted-average assumptions: Discount rate 3.80 % 3.70 % 3.75 % 3.50 % 4.30 % 3.30 % Expected return on plan assets 7.50 % 7.50 % 7.50 % n/a n/a n/a Rate of compensation increase n/a n/a n/a n/a n/a n/a For measurement purposes, a 6.5% annual rate of increase in the per capita cost of covered benefits (i.e., health care cost trend rate) was assumed for 2015 , grading down to an ultimate rate of 4% in 2064 . The health care trend rate assumption does not have a significant effect on the contributory defined benefit postretirement plan; therefore, a one percentage point increase or decrease in the trend rate is not material in the determination of the accumulated postretirement benefit obligation or the ongoing expense. 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 fair value of plan assets are required to be remeasured in order to determine the settlement gain or loss. During each quarter of 2015, the total lump-sum distributions made to participants caused the total settlements to exceed the recognition threshold for settlement gains or losses. As a result, Peoples remeasured its pension obligation and plan assets as of the beginning of each fiscal quarter of 2015 as part of the calculation of the settlement loss recognized. Determination of Expected Long-term Rate of Return The expected long-term rate of return on the pension plan's total assets is based on the expected return of each category of the pension plan's assets. Peoples' investment strategy for the pension plan's assets continues to allocate 60% to 75% to equity securities. The returns generated by equity securities over the last 10 years have been significantly lower than their long-term historical annual returns due in part to unfavorable economic conditions. Plan Assets Peoples' investment strategy, as established by Peoples' Retirement Plan Committee, is to invest assets of the pension plan based upon established target allocations, which include a target range of 60 - 75% allocation in equity securities, 20 - 43% in debt securities and 0-15% of other investments. The assets are reallocated periodically to meet the target allocations. The investment policy is reviewed periodically, under the advisement of a certified investment advisor, to determine if the policy should be changed. The following table provides the fair values of investments held in Peoples' pension plan at December 31, by major asset category: (Dollars in thousands) Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) 2015 Equity securities: Mutual funds - equity $ 4,908 $ 4,908 $ — Debt securities: Mutual funds - taxable income 1,863 1,863 — Total fair value of pension assets $ 6,771 $ 6,771 $ — 2014 Equity securities: Mutual funds - equity $ 5,756 $ 5,756 $ — Debt securities: Mutual funds - taxable income 2,128 2,128 — Total fair value of pension assets $ 7,884 $ 7,884 $ — Pension plan assets also included cash and cash equivalents of $352,000 and accrued income of $1,000 at December 31, 2015 . Cash and cash equivalents were $373,000 and accrued income was $2,000 at December 31, 2014 . For further information regarding levels of input used to measure fair value, refer to Note 2. Equity securities of Peoples' pension plan did not include any securities of Peoples or related parties in 2015 or 2014 . Cash Flows Peoples expects to make between $475,000 to $500,000 of contributions to its pension plan in 2016; however, actual contributions are made at the discretion of the Retirement Plan Committee and Peoples' Board of Directors. Estimated future benefit payments, which reflect benefits attributable to estimated future service, for the years ending December 31 are as follows: (Dollars in thousands) Pension Benefits Postretirement Benefits 2016 $ 1,090 $ 21 2017 801 13 2018 853 12 2019 842 12 2020 959 12 2021 to 2025 3,720 48 Total $ 8,265 $ 118 Retirement Savings Plan Peoples also maintains a retirement savings plan, or 401(k) plan, which covers substantially all employees. The plan provides participants the opportunity to save for retirement on a tax-deferred basis. Beginning January 1, 2011, matching contributions equaled 100% of participants' contributions that did not exceed 3% of the participants' compensation, plus 50% of participants' contributions between 3% and 5% of the participants' compensation. Matching contributions made by Peoples totaled $1,454,000 , $1,048,000 and $924,000 in 2015 , 2014 and 2013 , respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Taxes [Abstract]
Income Tax Disclosure	Income Taxes The reported income tax expense and effective tax rate in the Consolidated Statements of Income differs from the amounts computed by applying the statutory corporate tax rate as follows for the years ended December 31 : 2015 2014 2013 (Dollars in thousands) Amount Rate Amount Rate Amount Rate Income tax computed at statutory federal tax rate $ 5,051 34.1 % $ 8,462 35.0 % $ 10,179 35.0 % Differences in rate resulting from: Tax-exempt interest income (1,109 ) (7.5 )% (726 ) (3.0 )% (645 ) (2.2 )% Investments in tax credit funds (123 ) (0.8 )% (481 ) (2.0 )% (314 ) (1.1 )% Bank owned life insurance (204 ) (1.4 )% (37 ) — % 2,183 7.5 % Other, net 260 1.8 % 276 1.0 % 107 0.4 % Income tax expense $ 3,875 26.2 % $ 7,494 31.0 % $ 11,510 39.6 % Peoples' reported income tax expense consisted of the following for the years ended December 31 : (Dollars in thousands) 2015 2014 2013 Current income tax expense $ 5,457 $ 3,659 $ 6,883 Deferred income tax (benefit) expense (1,582 ) 3,835 4,627 Income tax expense $ 3,875 $ 7,494 $ 11,510 The significant components of Peoples' deferred tax assets and liabilities consisted of the following at December 31 : (Dollars in thousands) 2015 2014 Deferred tax assets: Allowance for loan losses $ 12,144 $ 10,493 Bank premises and equipment 1,060 — Available-for-sale securities — — Investments 1,842 1,956 Accrued employee benefits 2,748 2,662 Other 3,803 1,146 Gross deferred tax assets $ 21,597 $ 16,257 Valuation allowance 605 — Total deferred tax assets $ 20,992 $ 16,257 Deferred tax liabilities: Purchase accounting adjustments 11,342 6,316 Available-for-sale securities 1,544 1,368 Bank premises and equipment — 2,470 Deferred loan income 2,260 1,924 Other 664 684 Total deferred tax liabilities $ 15,810 $ 12,762 Net deferred tax asset $ 5,182 $ 3,495 The tax loss carryforward, related to the NB&T acquisition at December 31, 2015 will be recognized in accordance with 26 U.S. Code §382 limitation of net operating loss carry forward guidance. As of December 31, 2015, the Company had a net operating loss carryforward of approximately $5.8 million for tax purposes, which will be available to offset future taxable income. If not used, this carryforward will expire in 2035. A $0.6 million valuation allowance related to a partnership investment was recorded for deferred tax assets at December 31, 2015 , as it is more likely than not that the $1.7 million of gross deferred tax assets may not be realized in future periods. The related federal income tax expense on securities transactions approximated $255,000 in 2015 , $139,000 in 2014 and $171,000 in 2013 . Income tax benefits are recognized in the Consolidated Financial Statements for a tax position only if it is considered "more likely than not" of being sustained on audit, based solely on the technical merits of the income tax position. If the recognition criteria are met, the amount of income tax benefits to be recognized are measured based on the largest income tax benefit that is more than 50 percent likely to be realized on ultimate resolution of the tax position. The following table provides a reconciliation of uncertain tax positions at December 31: (Dollars in thousands) 2015 2014 Uncertain tax positions, beginning of year $ 240 $ 30 Gross increase based on tax positions related to current year 182 178 Gross increase for tax position taken during prior years — 33 Gross decrease for tax positions taken during prior years (2 ) — Gross decrease due to the statute of limitations (3 ) (1 ) Uncertain tax positions, end of year $ 417 $ 240 Peoples' income tax returns are subject to review and examination by federal and state taxing authorities. Peoples is currently open to audit under the applicable statutes of limitations by the Internal Revenue Service for the years ended December 31, 2012 through 2014. The years open to examination by state taxing authorities vary by jurisdiction.

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The calculations of basic and diluted earnings per common share for the years ended December 31 were as follows: (Dollars in thousands, except per common share data) 2015 2014 2013 Distributed earnings allocated to common shareholders $ 10,426 $ 7,095 $ 5,749 Undistributed earnings allocated to common shareholders 404 9,472 11,685 Net earnings allocated to common shareholders $ 10,830 $ 16,567 $ 17,434 Weighted-average common shares outstanding 17,555,140 12,183,352 10,581,222 Effect of potentially dilutive common shares 132,655 122,872 98,195 Total weighted-average diluted common shares outstanding 17,687,795 12,306,224 10,679,417 Earnings per common share: Basic $ 0.62 $ 1.36 $ 1.65 Diluted $ 0.61 $ 1.35 $ 1.63 Anti-dilutive common shares excluded from calculation: Stock options and stock appreciation rights 46,109 55,184 91,902

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2015
Financial Instruments with Off-Balance Sheet Risk [Abstract]
Financial Instruments Disclosure [Text Block]	Financial Instruments with Off-Balance Sheet Risk In the normal course of business, Peoples is party to financial instruments with off-balance sheet risk necessary to meet the financing needs of customers. These financial instruments include commitments to extend credit and standby letters of credit. The instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the Consolidated Balance Sheets. The contract amounts of these instruments express the extent of involvement Peoples has in these financial instruments. Loan Commitments and Standby Letters of Credit Loan commitments are made to accommodate the financial needs of Peoples' customers. Standby letters of credit are instruments issued by Peoples Bank guaranteeing the beneficiary payment by Peoples Bank in the event of default by Peoples Bank's customer in the nonperformance of an obligation or service. Historically, most loan commitments and standby letters of credit expire unused. Peoples' exposure to credit loss in the event of nonperformance by the counter-party to the financial instrument for loan commitments and standby letters of credit is represented by the contractual amount of those instruments. Peoples uses the same underwriting standards in making commitments and conditional obligations as it does for on-balance sheet instruments. The amount of collateral obtained is based on management's credit evaluation of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant, and equipment, and income-producing commercial properties. The total amounts of loan commitments and standby letters of credit at December 31 are summarized as follows: (Dollars in thousands) 2015 2014 Home equity lines of credit $ 84,148 $ 62,704 Unadvanced construction loans 77,479 46,781 Other loan commitments 233,689 173,746 Loan commitments 395,316 283,231 Standby letters of credit $ 22,970 $ 30,837 Interest Rate Swaps 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 a notional value of $72.2 million and fair value of $3.1 million at December 31, 2015 , and a notional value of $44.0 million and fair value of $2.1 million at December 31, 2014 . These interest rate swaps did not have a material impact on Peoples' results of operation or financial condition.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2015
Regulatory Matters [Abstract]
Regulatory Capital Requirements under Banking Regulations	Regulatory Matters The following is a summary of certain regulatory matters affecting Peoples and its subsidiaries: Federal Reserve Requirements Peoples Bank is required to maintain a minimum level of reserves, consisting of cash on hand and non-interest-bearing balances with the FRB, based on the amount of deposit liabilities. Average required reserve balances were approximately $16.3 million and $12.2 million in 2015 and 2014 , respectively. Limits on Dividends The primary source of funds for the dividends paid by Peoples is dividends received from Peoples Bank. The payment of dividends by Peoples Bank is subject to various banking regulations. The most restrictive provision requires regulatory approval if dividends declared in any calendar year exceed the total net profits of that year plus the retained net profits of the preceding two years. At December 31, 2015 , Peoples Bank had approximately $2.6 million of net profits available for distribution to Peoples as dividends without regulatory approval. Capital Requirements Peoples and Peoples Bank are subject to various regulatory capital guidelines administered by the banking regulatory agencies. Under capital adequacy requirements and the regulatory framework for prompt corrective action, Peoples and Peoples Bank must meet specific capital guidelines that involve quantitative measures of each entity's assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. Peoples' and Peoples Bank's capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Failure to meet future minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by the regulators that, if undertaken, could have a material effect on Peoples' financial results. Quantitative measures established by regulation to ensure capital adequacy, and in effect at December 31, 2015, required Peoples and Peoples Bank to maintain minimum amounts and ratios of Common Equity Tier 1 capital, Tier 1 capital and Total capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier I capital (as defined) to average assets (as defined). Peoples and Peoples Bank met all capital adequacy requirements at December 31, 2015 . As of December 31, 2015 , the most recent notifications from the banking regulatory agencies categorized Peoples and Peoples Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, Peoples and Peoples Bank must maintain minimum Common Equity Tier 1, Tier 1 risk-based, Total risk-based and Tier I leverage ratios as set forth in the table below. There are no conditions or events since these notifications that management believes have changed Peoples or Peoples Bank's category. Peoples and Peoples Bank's actual capital amounts and ratios as of December 31 are also presented in the following table: 2015 2014 (Dollars in thousands) Amount Ratio Amount Ratio PEOPLES Common Equity Tier 1 (1) Actual 288,416 13.4 % N/A N/A For capital adequacy 97,083 4.5 % N/A N/A To be well capitalized 140,232 6.5 % N/A N/A Tier 1 (2) Actual $ 295,151 13.7 % $ 241,707 14.3 % For capital adequacy 129,445 6.0 % 67,519 4.0 % To be well capitalized 172,593 8.0 % 101,278 6.0 % Total Capital (3) Actual $ 313,974 14.6 % $ 261,371 15.5 % For capital adequacy 172,593 8.0 % 135,037 8.0 % To be well capitalized 215,741 10.0 % 168,797 10.0 % Tier 1 Leverage (4) Actual $ 295,151 9.5 % $ 241,707 9.9 % For capital adequacy 123,973 4.0 % 97,470 4.0 % To be well capitalized 154,967 5.0 % 121,837 5.0 % Net Risk-Weighted Assets $ 2,157,410 $ 1,687,968 PEOPLES BANK Common Equity Tier 1 (1) Actual 257,045 11.9 % N/A N/A For capital adequacy 96,916 4.5 % N/A N/A To be well capitalized 139,989 6.5 % N/A N/A Tier 1 (2) Actual $ 277,045 12.9 % $ 205,710 12.9 % For capital adequacy 129,221 6.0 % 67,464 4.0 % To be well capitalized 172,295 8.0 % 101,196 6.0 % Total Capital (3) Actual $ 293,823 13.6 % $ 223,591 13.3 % For capital adequacy 172,295 8.0 % 134,928 8.0 % To be well capitalized 215,368 10.0 % 168,660 10.0 % Tier 1 Leverage (4) Actual $ 277,045 9.0 % $ 205,710 8.5 % For capital adequacy 123,742 4.0 % 97,333 4.0 % To be well capitalized 154,677 5.0 % 121,666 5.0 % Net Risk-Weighted Assets $ 2,153,682 $ 1,686,603 (1) Ratio represents Common Equity Tier 1 capital to net risk-weighted assets (2) Ratio represents Tier 1 capital to net risk-weighted assets (3) Ratio represents total capital to net risk-weighted assets (4) Ratio represents Tier 1 capital to average assets

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2015
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation Under the Peoples Bancorp Inc. Second 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 and unrestricted share awards to employees and non-employee directors. The total number of common shares available under the 2006 Equity Plan is 1,081,260 . The maximum number of common shares that can be issued for incentive stock options is 800,000 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. In 2007 and 2008, Peoples granted stock appreciation rights (“SARs”) to be settled in common shares. Since February 2007, Peoples has granted restricted common shares to employees and non-employee directors subject to the terms and conditions prescribed by 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 Options Under the provisions of the 2006 Equity Plan and predecessor stock option plans, the exercise price per share of any stock option granted may not be less than the grant date fair market value of the underlying common shares. All stock options granted to both employees and non-employee directors expire ten years from the date of grant. The most recent stock option grants to employees and non-employee directors occurred in 2006. The stock options granted to employees vested three years after the grant date, while the stock options granted to non-employee directors vested six months after the grant date. The following summarizes the changes to Peoples' outstanding stock options for the year ended December 31, 2015 : Number of Common Shares Subject to Options Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1 38,577 $ 28.09 Expired 18,267 27.27 Outstanding at December 31 20,310 $ 28.83 0.3 years $ — Exercisable at December 31 20,310 $ 28.83 0.3 years $ — The following table summarizes Peoples’ stock options outstanding at December 31, 2015 : Options Outstanding & Exercisable Range of Exercise Prices Common Shares Subject to Options Outstanding Weighted-Average Remaining Contractual Life Weighted-Average Exercise Price $28.25 10,310 0.1 years 28.25 $28.57 to $30.00 10,000 0.4 years 29.43 Total 20,310 0.3 years $ 28.83 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 grant date and are to expire ten years from the date of grant. The most recent grant of SARs occurred in 2008. The following summarizes the changes to Peoples' outstanding SARs for the year ended December 31, 2015 : Number of Common Shares Subject to SARs Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1 21,292 $ 25.96 Forfeited 3,544 26.47 Outstanding at December 31 17,748 $ 25.86 1.5 years $ — Exercisable at December 31 17,748 $ 25.86 1.5 years $ — The following table summarizes Peoples’ SARs outstanding at December 31, 2015 : Exercise Price Number of Common Shares Subject to SARs Outstanding & Exercisable Weighted- Average Remaining Contractual Life $23.26 2,000 1.6 years $23.77 8,782 1.9 years $29.25 6,966 1.0 year Total 17,748 1.5 years Restricted Shares Under the 2006 Equity Plan, Peoples may award restricted common shares to officers, key employees and non-employee directors. In general, the restrictions on common shares awarded to non-employee directors expire after six months , while the restrictions on common shares awarded to employees expire after periods ranging from one to three years . In 2015, Peoples granted an aggregate of 108,411 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. Peoples also granted an aggregate of 5,600 restricted common shares to non-employee directors with a six-month time-based vesting period. In addition, Peoples granted restricted common shares during 2015 to attract and/or retain key employees with vesting periods ranging from one to three years. The following summarizes the changes to Peoples’ outstanding restricted common shares for the year ended December 31, 2015 : Time Vesting Performance 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 47,591 $ 19.48 125,079 $ 21.73 Awarded 22,600 21.13 108,411 23.62 Released 36,907 18.21 49,058 21.74 Forfeited 2,550 24.94 25,669 22.70 Outstanding at December 31 30,734 $ 21.76 158,763 $ 22.86 The total intrinsic value of restricted common shares released was $ 2.0 million , $1.6 million and $654,000 in 2015 , 2014 and 2013 , respectively. Stock-Based Compensation Peoples recognized stock-based compensation expense, which is included as a component of Peoples’ salaries and employee benefit costs, based on the estimated fair value of the awards on the grant date. The following summarizes the amount of stock-based compensation expense and related tax benefit recognized at December 31: (Dollars in thousands) 2015 2014 2013 Total stock-based compensation $ 1,843 $ 2,111 $ 1,362 Recognized tax benefit (645 ) (739 ) (477 ) Net expense recognized $ 1,198 $ 1,372 $ 885 Restricted common shares were the only stock-based compensation awards granted by Peoples in 2015, 2014 and 2013. The fair value of restricted common share awards on the grant date is the market price of Peoples' common shares. Total unrecognized stock-based compensation expense related to unvested awards was $ 2.0 million at December 31, 2015 , which will be recognized over a weighted-average period of 1.9 years. In 2014, the Board of Directors granted 12,030 unrestricted common shares to certain employees that did not already participate in the 2006 Equity Plan, which resulted in an additional $298,000 of stock-based compensation expense being recognized.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Acquisitions	Acquisitions During 2015, Peoples completed two acquisitions, which were accounted for as business combinations under the acquisition method of accounting under US GAAP. The assets purchased, liabilities assumed, and related identifiable intangible assets were recorded at their acquisition date fair values, and are detailed below. The balances and operations related to these acquisitions are included in Peoples' consolidated financial statements from the respective dates of acquisition. On March 6, 2015, Peoples completed its acquisition of NB&T for total consideration of $102.7 million which reflected the conversion of each of the 3,442,329 outstanding NB&T common shares into $7.75 in cash and 0.9319 in Peoples' common shares. NB&T merged into Peoples and NB&T's wholly-owned subsidiary, The National Bank and Trust Company, which operated 22 full-service branches in southwest Ohio, 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 goodwill recognized will not be deductible for income tax purposes. On July 21, 2015, Peoples Insurance acquired an insurance agency and related customer accounts in the Lebanon, Ohio area for total cash consideration of $0.9 million , and recorded $0.5 million of customer relationship intangibles and $0.4 million of goodwill. On January 6, 2016, Peoples Bank acquired a small financial advisory book of business in Marietta, Ohio for cash consideration of $0.5 million . This acquisition did not materially impact Peoples' financial position, results of operations or cash flows. The following table provides the purchase price calculation as of the date of acquisition for the NB&T acquisition, and the assets acquired and liabilities assumed at their estimated fair values. (Dollars in thousands, except per share data) NB&T Purchase Price Common shares outstanding at merger announcement 3,442,329 Cash purchase price per share $ 7.75 Cash consideration 26,678 Number of common shares of Peoples issued for each common share of acquired company 0.93 Price per Peoples common share, based on closing date $ 23.70 Common share consideration 76,027 Cash in lieu of fractional common shares of Peoples 4 Total purchase price $ 102,709 Net Assets at Fair Value Assets Cash and cash equivalents $ 124,825 Investment securities 156,392 Loans, including loans held for sale, net of deferred fees and costs 384,588 Bank premises and equipment, net 10,702 Other intangible assets 10,130 Other assets 24,458 Total assets 711,095 Liabilities Deposits 629,512 Borrowings 6,570 Accrued expenses and other liabilities 5,941 Total liabilities 642,023 Net assets $ 69,072 Goodwill $ 33,637 The estimated fair values presented in the above table reflect additional information that was obtained during the three months ended December 31, 2015, 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 in the period in which the adjustment is determined and, as a result, previously recorded results have changed. After considering the additional information obtained during the three months ended December 31, 2015, the estimated fair value of other assets increased $0.6 million , the revised fair value estimate resulted in a net decrease to goodwill of $0.6 million from the amount reported as of September 30, 2015, to $33.6 million , which was recognized in the December 31, 2015 Consolidated Balance Sheet. Refer to Note 6 for details of the changes in goodwill and intangible assets arising from the acquisitions. Acquired loans are reported net of the unamortized fair value adjustment. The following table details the fair value adjustment for acquired loans as of the acquisition date: (Dollars in thousands, except per share data) NB&T Nonimpaired Loans Contractual cash flows $ 497,451 Nonaccretable difference 45,828 Expected cash flows 451,623 Accretable yield 90,346 Fair value $ 361,277 Purchase Credit Impaired Loans Contractual cash flows $ 40,258 Nonaccretable difference 13,336 Expected cash flows 26,922 Accretable yield 3,611 Fair value $ 23,311 Peoples recorded non-interest expenses related to acquisitions of $10.7 million and net losses on asset disposals of $0.6 million in the Consolidated Statement of Income during 2015. The $10.7 million was included in the following line items on the Consolidated Statement of Income for the year ended December 31, 2015: salaries and employee benefit costs contained $4.4 million , professional fees contained $1.7 million , data processing and software expense contained $0.3 million and other non-interest expenses contained $4.3 million . The following table illustrates the unaudited pro forma information for the results of operations for periods ended December 31, as if the NB&T acquisition had occurred on January 1 of each year. This information includes the impact of certain purchase accounting adjustments, including the amortization/accretion related to loans, other intangible assets, deposits and borrowings. This information is presented for illustrative purposes only, and is not necessarily indicative of the results of operations had the acquisition been completed at the beginning of the earliest periods presented, and is not necessarily indicative of future results of operations. For the Twelve Months Ended December 31 (Dollars in thousands) 2015 2014 Total revenue (net interest income and non-interest income) $ 149,965 $ 141,221 Net income available to common shareholders 12,259 23,512 Peoples' total revenue for the year ended December 31, 2015 included $26.2 million provided by NB&T and $7.8 million of net income.

Parent Company Only Financial I

Parent Company Only Financial Information	12 Months Ended
	Dec. 31, 2015
Parent Company Only Financial Information [Abstract]
Condensed Financial Information of Parent Company Only Disclosure	Parent Company Only Financial Information Condensed Balance Sheets December 31, (Dollars in thousands) 2015 2014 Assets: Cash and due from other banks $ 50 $ 50 Interest-bearing deposits in subsidiary bank 4,437 41,666 Due from subsidiary bank 3,875 1,015 Available-for-sale investment securities, at fair value (amortized cost of $1,255 at December 31, 2015 and December 31, 2014) 5,813 5,214 Investments in subsidiaries: Bank 385,258 281,360 Non-bank 29,155 30,693 Other assets 1,070 878 Total assets $ 429,658 $ 360,876 Liabilities: Accrued expenses and other liabilities $ 3,030 $ 6,365 Dividends payable 103 24 Long-term borrowings — 14,369 Mandatorily redeemable capital securities of subsidiary trust 6,736 — Total liabilities 9,869 20,758 Common stockholders' equity 419,789 340,118 Total stockholders' equity 419,789 340,118 Total liabilities and stockholders' equity $ 429,658 $ 360,876 Condensed Statements of Income Year Ended December 31, (Dollars in thousands) 2015 2014 2013 Income: Dividends from subsidiary bank $ 17,500 $ 21,000 $ 15,000 Dividends from non-bank subsidiary 2,000 500 — Interest and other income 206 205 132 Total income 19,706 21,705 15,132 Expenses: Trust preferred securities expense 304 — — Intercompany management fees 3,171 1,546 1,257 Other expense 5,653 4,578 3,411 Total expenses 9,128 6,124 4,668 Income before federal income taxes and equity in (excess dividends from) undistributed earnings of subsidiaries 10,578 15,581 10,464 Applicable income tax benefit (3,139 ) (2,102 ) (1,510 ) (Excess dividends from) equity in undistributed earnings of subsidiaries (2,776 ) (999 ) 5,600 Net income $ 10,941 $ 16,684 $ 17,574 Statements of Cash Flows Year Ended December 31, (Dollars in thousands) 2015 2014 2013 Operating activities Net income $ 10,941 $ 16,684 $ 17,574 Adjustment to reconcile net income to cash provided by operations: Depreciation, amortization and accretion, net 165 — — Excess dividends from (equity in) undistributed earnings of subsidiaries 2,776 999 (5,600 ) Other, net (1,903 ) 1,825 1,803 Net cash provided by operating activities 11,979 19,508 13,777 Investing activities Investment in subsidiaries (104,584 ) (65,822 ) — Change in receivable from subsidiary (2,860 ) (187 ) (619 ) Business combinations, net of cash received 83,391 54,386 — Net cash used in investing activities (24,053 ) (11,623 ) (619 ) Financing activities Payments on long-term borrowings (14,400 ) (4,800 ) (4,800 ) Purchase of treasury stock (741 ) (520 ) (228 ) Proceeds from issuance of common stock — 40,242 8 Cash dividends paid (10,065 ) (6,767 ) (5,419 ) Excess tax benefit for share-based payments 51 85 79 Net cash (used in) provided by financing activities (25,155 ) 28,240 (10,360 ) Net (decrease) increase in cash and cash equivalents (37,229 ) 36,125 2,798 Cash and cash equivalents at the beginning of year 41,716 5,591 2,793 Cash and cash equivalents at the end of year $ 4,487 $ 41,716 $ 5,591 Supplemental cash flow information: Interest paid $ 594 $ 672 $ 915

Summarized Quarterly Informatio

Summarized Quarterly Information (Unaudited)	12 Months Ended
	Dec. 31, 2015
Summarized Quarterly Information (Unaudited) [Abstract]
Quarterly Financial Information	Summarized Quarterly Information (Unaudited) 2015(a) (Dollars in thousands, except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter Total interest income $ 24,159 $ 27,566 $ 28,178 $ 28,430 Total interest expense 2,740 2,773 2,642 2,566 Net interest income 21,419 24,793 25,536 25,864 Provision for loan losses 350 672 5,837 7,238 Net loss on asset disposals and other transactions (1,103 ) (136 ) (51 ) (498 ) Net gain on investment securities 600 11 62 56 Other income 11,508 11,926 11,906 12,101 Amortization of other intangible assets 673 1,144 1,127 1,133 Acquisition-related expenses 9,043 732 109 838 Other expenses 23,198 26,902 24,876 25,306 Income tax (benefit) expense (151 ) 2,231 1,370 425 Net (loss) income $ (689 ) $ 4,913 $ 4,134 $ 2,583 Earnings (loss) per common share - Basic $ (0.04 ) $ 0.27 $ 0.23 $ 0.14 Earnings (loss) per common share - Diluted $ (0.04 ) $ 0.27 $ 0.22 $ 0.14 Weighted-average common shares outstanding - Basic 15,802,334 18,116,090 18,127,131 18,142,997 Weighted-average common shares outstanding - Diluted 15,930,235 18,253,918 18,271,979 18,278,272 2014 (b) (Dollars in thousands, except per share data) First Quarter Second Quarter (c) Third Quarter (c) Fourth Quarter Total interest income $ 18,152 $ 18,614 $ 20,566 $ 22,868 Total interest expense 2,672 2,571 2,707 2,744 Net interest income 15,480 16,043 17,859 20,124 Provision for (recovery of) loan losses 8 583 (380 ) 128 Net gain (loss) on asset disposals and other transactions 11 (187 ) (109 ) (146 ) Net (loss) gain on investment securities (30 ) 66 124 238 Other income 10,295 9,719 9,861 10,178 Amortization of other intangible assets 263 282 367 516 Acquisition-related expenses 150 1,271 1,462 1,869 Other expenses 18,404 18,451 20,378 21,596 Income tax expense 2,148 1,577 1,729 2,040 Net income $ 4,783 $ 3,477 $ 4,179 $ 4,245 Earnings per common share - Basic $ 0.45 $ 0.32 $ 0.33 $ 0.29 Earnings per common share - Diluted $ 0.44 $ 0.32 $ 0.32 $ 0.28 Weighted-average common shares outstanding - Basic 10,636,089 10,755,509 12,632,341 14,660,314 Weighted-average common shares outstanding - Diluted 10,740,884 10,880,090 12,765,880 14,809,289 (a) Reflects the impact of the acquisition of NB&T beginning March 6, 2015. (b) Reflects the impact of the acquisitions of Midwest beginning May 30, 2014, Ohio Heritage beginning August 22, 2014, and North Akron beginning October 24, 2014. (c) Amounts adjusted for immaterial changes based on fair market value adjustments for acquired loan portfolios.

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Business Combinations Policy [Policy Text Block]	Business Combinations: Business combinations are accounted for using the acquisition method of accounting. Under this accounting method, the acquired company's net assets are recorded at fair value on the date of acquisition, and the results of operations of the acquired company are combined with Peoples' from the acquisition date forward. Costs related to the acquisition are expensed as incurred. The purchase price paid over the fair value of the net assets acquired (including intangible assets with finite lives) is recorded as goodwill.
Basis of Presentation	The accounting and reporting policies of Peoples Bancorp Inc. and 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.) conform to generally accepted accounting principles in the United States of America (“US GAAP”) and to general practices within the banking industry. The preparation of the financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Certain items in prior financial statements have been reclassified to conform to the current presentation, which had no impact on net income, comprehensive income or loss, net cash provided by operating activities or stockholders' equity.
Consolidation	Consolidation: Peoples' Consolidated Financial Statements include subsidiaries in which Peoples has a controlling financial interest, principally defined as owning a voting interest greater than 50%. In addition, entities not controlled by voting interest or in which the equity investors do not bear the residual economic risks, but for which Peoples is the primary beneficiary are also consolidated. The Consolidated Financial Statements include the accounts of Peoples and its consolidated subsidiaries, Peoples Bank and Peoples Investment Company, along with their wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated.
Cash and Cash Equivalents	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. Included in interest-bearing deposits in other banks were $ 5.0 million and $3.5 million in funds at December 31, 2015 and 2014 , respectively, which were being used as collateral and not available for withdrawal.
Investment Securities	Investment Securities: Investment securities are recorded initially at cost, which includes premiums and discounts if purchased at other than par or face value. Peoples amortizes premiums and accretes discounts as an adjustment to interest income on a level yield basis. The cost of investment securities sold, and any resulting gain or loss, is based on the specific identification method and recognized as of the trade date. Management determines the appropriate classification of investment securities at the time of purchase. Held-to-maturity securities are those securities that Peoples has the positive intent and ability to hold to maturity and are recorded at amortized cost. Available-for-sale securities are those securities that would be available to be sold in the future in response to Peoples' liquidity needs, changes in market interest rates, and asset-liability management strategies, among other considerations. Available-for-sale securities are reported at fair value, with unrealized holding gains and losses reported in stockholders' equity as a separate component of other accumulated comprehensive income or loss, net of applicable deferred income taxes. Certain restricted equity 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 Federal Home Loan Bank of Cincinnati (the “FHLB”) and the Federal Reserve Bank of Cleveland (the "FRB"). Management systematically evaluates investment securities for other-than-temporary declines in fair value on a quarterly basis. This analysis requires management to consider various factors, which include (1) the duration and magnitude of the decline in value, (2) the financial condition of the issuer or issuers, and (3) the structure of the security. An impairment loss is recognized in earnings only when (1) Peoples intends to sell the debt security, (2) it is more likely than not that Peoples will be required to sell the security before recovery of its amortized cost basis, or (3) Peoples does not expect to recover the entire amortized cost basis of the security. In situations where Peoples intends to sell or when it is more likely than not that Peoples will be required to sell the security, the entire impairment loss must be recognized in earnings. In all other situations, only the portion of the impairment loss representing the credit loss must be recognized in earnings, with the remaining portion being recognized in stockholders' equity as a component of accumulated comprehensive income or loss, net of applicable deferred taxes.
Fair Value Measurements	Fair Value Measurements: 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 investments, retained interests from securitizations, and certain collateralized debt obligations.
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase: Peoples enters into sales of securities under agreements to repurchase (“Repurchase Agreements”) with customers and other financial service companies, which are considered financings. As such, these obligations are recorded as a liability on the Consolidated Balance Sheets and disclosed in Note 8 and Note 9. Securities pledged as collateral under Repurchase Agreements are included in investment securities on the Consolidated Balance Sheets and are disclosed in Note 3. The fair value of the collateral pledged to a third party is continually monitored and additional collateral is pledged or returned, as deemed appropriate.
Loans and Loans Held-For-Sale	Loans: Loans originated that Peoples has the positive intent and ability to hold for the foreseeable future or to maturity or payoff are reported at the principal balance outstanding, net of deferred loan fees and costs and an allowance for loan losses. The foreseeable future is based upon current market conditions and business strategies, as well as balance sheet management and liquidity. As the conditions change, so may management's view of the foreseeable future. Net deferred loan costs were $ 3.3 million and $ 2.4 million at December 31, 2015 and 2014 , respectively. A loan is considered impaired when information and events indicate it is probable that collection of all contractual principal and interest payments is doubtful. Impairment is evaluated in total for smaller-balance loans of a similar nature, primarily consumer and residential real estate loans, and on an individual loan basis for all loans to borrowers with an aggregate unpaid principal balance in excess of $1 million on an annual basis for possible credit deterioration. This loan review process provides Peoples Bank with opportunities to identify potential problem loans and take proactive actions to assure repayment of the loan or minimize Peoples Bank's risk of loss, such as reviewing the relationship more frequently based upon the loan quality rating and aggregate debt outstanding. Upon detection of the reduced ability of a borrower to meet cash flow obligations, the loan is reviewed for possible downgrade or placement on nonaccrual status. Loan relationships whose aggregate debt to Peoples Bank is equal to or less than $1 million are reviewed on an event driven basis. Triggers for review include knowledge of adverse events affecting the business, receipt of financial statements indicating deteriorating credit quality and other events. Peoples typically places any loan deemed to be impaired on nonaccrual status and allocates a specific portion of the allowance for loan losses, if necessary, to reduce the net carrying value of the loan to its estimated net realizable value. Impaired loans, or portions thereof, are charged off when deemed uncollectable. Upon detection of the reduced ability of a borrower to meet cash flow obligations, consumer and residential real estate loans typically are charged down to the net realizable value, with the residual balance placed on nonaccrual status. Loans acquired in a business combination that have evidence of deterioration of credit quality, commonly referred to as "purchase credit impaired" loans, since origination and for which it is probable, at acquisition, that Peoples will be unable to collect all contractually required payments receivable are initially recorded at fair value (the present value of the amounts expected to be collected) with no valuation allowance. The difference between the undiscounted cash flows expected at acquisition and the investment in the loan is recognized as interest income on a level-yield method over the life of the loan. Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition are not recognized. Over the life of these acquired loans, management continues to monitor each acquired purchased credit impaired loan portfolio for changes in credit quality. Increases in expected cash flows subsequent to acquisition are recognized prospectively over their remaining life as a yield adjustment on the loans. Subsequent decreases in expected cash flows 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. These purchase credit impaired loans are considered to be accruing and performing even though collection of contractual payments on loans may be in doubt, as income continues to be accreted as long as expected cash flows can be reasonably estimated. Loans acquired in a business combination that are not impaired are recorded at fair value, and the difference between the acquisition date fair value and the contractual amounts due at the acquisition date represents the discounts (or premiums) to a loan's cost basis and are accreted (or amortized) to interest income over the loan's remaining life using the level yield method. Subsequent to the acquisition date, the methods utilized to estimate the required allowance for loan losses for these loans is similar to originated loans; however, Peoples records a provision for loan losses only when the required allowance exceeds the remaining discount. Loans Held-for-Sale: Loans originated and intended to be sold in the secondary market, generally one-to-four family residential loans, are carried at the lower of cost or estimated fair value determined on an aggregate basis. Gains and losses on sales of loans held for sale are included in mortgage banking income. Loans originated with the intent to be held in our portfolio are subsequently transferred to held-for-sale when a decision is made to sell these loans. At the time of a loan's transfer to the held-for-sale classification, the loan is recorded at the lower of cost or its fair value. Any reduction in the loan's value is reflected as a write-down of the recorded investment resulting in a new cost basis, with a corresponding charge against the allowance for loan losses. If the fair value of a loan classified as held-for-sale in subsequent periods is less than its cost basis, the carrying value of the loan is adjusted accordingly, with the corresponding loss recognized in earnings. Peoples enters into interest rate lock commitments with borrowers and best efforts commitments with investors on mortgage loans originated for sale into the secondary markets to manage the inherent interest rate and pricing risk associated with selling loans. The interest rate lock commitments generally terminate once the loan is funded, the lock period expires or the borrower decides not to contract for the loan. The best efforts commitments generally terminate once the loan is sold, the commitment period expires or the borrower decides not to contract for the loan. These commitments are considered derivatives which are generally accounted for by recognizing their estimated fair value on the Consolidated Balance Sheets as either a freestanding asset or a freestanding liability. The valuation of such commitments does not consider expected cash flows related to the servicing of the future loan. Management has determined these derivatives do not have a material effect on Peoples' financial position, results of operations or cash flows.
Allowance for Loan Losses	Allowance for Loan Losses: The allowance for loan losses is a valuation reserve established through provisions for loan losses charged against income. The allowance for loan losses is maintained at a level that management deems sufficient to absorb probable losses inherent in the loan portfolio. Loans deemed to be uncollectable are charged against the allowance for loan losses, while recoveries of previously charged-off amounts are credited to the allowance for loan losses. The allowance for loan losses is comprised of specific valuation allowances for loans evaluated individually for impairment and general allocations for pools of homogeneous loans with similar risk characteristics and trends. Peoples' homogenous loan pools include similarly risk-graded commercial and industrial loans, similarly risk-graded commercial real estate loans, real estate construction loans (both commercial and residential), residential real estate loans, consumer home equity loans and other consumer loans. Management's evaluation of the appropriateness of the allowance for loan losses and the related provision for loan losses is based upon a quarterly analysis of the portfolio. While portions of the allowance for loan losses may be allocated to specific loans, the entire allowance for loan losses is available for any loan charged off by management. The allowance for loan losses related to specific loans is based on management's estimate of potential losses on impaired loans as determined by (1) the present value of expected future cash flows, (2) the fair value of collateral if the loan is determined to be collateral dependent, or (3) the loan's observable market price. The general allocations to specific loan pools are based on the historical loss rates for specific loan types and the internal risk grade, if applicable, adjusted for both internal and external qualitative risk factors. The calculation of historical loss rates for pools of similar loans with similar characteristics is based upon the proportion of actual charge-offs experienced to the total population of loans in the pool. The historical loss rates are periodically updated based on actual charge-off experience. The qualitative factors considered by management include, among other factors, (1) changes in local and national economic conditions, (2) changes in asset quality, (3) changes in loan portfolio volume, (4) the composition and concentrations of credit, (5) the impact of competition on loan structuring and pricing, (6) the impact of interest rate changes on portfolio risk, and (7) effectiveness of Peoples' loan policies, procedures and internal controls. The total allowance established for each homogenous loan pool represents the product of the historical loss rate and the total dollar amount of the loans in the pool. Peoples categorizes loans involving commercial borrowers into risk categories based upon an established grading matrix. This system is used to manage the risk within its commercial lending activities, evaluate changes in the overall credit quality of the loan portfolio and evaluate the appropriateness of the allowance for loan losses. Loan grades are assigned at the time a new loan or lending commitment is extended by Peoples and may be changed at any time when circumstances warrant. Peoples reviews, at least annually, all loan relationships with aggregate outstanding debt to Peoples of $1 million or more, and loan relationships with aggregate outstanding debt to Peoples of $5 million or more and adversely classified loans are generally reviewed on a quarterly basis. The primary factors considered when assigning a risk grade to a loan include (1) reliability and sustainability of the primary source of repayment, (2) past, present and projected financial condition of the borrower, and (3) current economic and industry conditions. Other factors that could influence the risk grade assigned include the type and quality of collateral and the strength of guarantors. The primary source of repayment for commercial real estate loans and commercial and industrial loans is normally the business's operating cash flow available to repay debt. Management's analysis of operating cash flow for commercial real estate loans secured by non-owner occupied properties takes into account factors such as rent rolls and vacancy statistics. Management's analysis of operating cash flow for commercial real estate loans secured by owner occupied properties and all commercial and industrial loans considers the profitability, liquidity and leverage of the business. The evaluation of construction loans is based largely on the borrower's ability to complete construction within the established budget. The primary factors considered when classifying consumer loans include the loan's past due status and declaration of bankruptcy by the borrower(s). The classification of residential real estate and home equity lines of credit also takes into account the current value of the underlying collateral.
Troubled Debt Restructuring	Troubled Debt Restructuring: The restructuring of a loan is considered a troubled debt restructuring ("TDR") if both (1) the borrower is experiencing financial difficulties and (2) the creditor has granted a concession. Loans acquired that are restructured after acquisition are not considered TDRs if the loans evidenced credit deterioration as of the acquisition date and are accounted for in pools of purchased credit impaired loans. 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 (1) the borrower is currently in payment default on any of the borrower's debt, (2) a payment default is probable in the foreseeable future without the modification, (3) the borrower has declared or is in the process of declaring bankruptcy, and (4) 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 debt, such as (1) a reduction in the interest rate for the remaining life of the debt, (2) an extension of the maturity date at an interest rate lower than the current market rate for new debt with similar risk, (3) a temporary period of interest-only payments, and (4) a reduction in the contractual payment amount for either a short period or the remaining term of the loan. All TDRs are considered impaired loans and are evaluated individually to determine if a write-down is required and if they should be on accrual or nonaccrual status.
Bank Premises and Equipment	Bank Premises and Equipment: 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.
Investments in Affordable Housing Limited Partnerships	Investments in Affordable Housing Limited Partnerships: Investments in affordable housing consist of investments in limited partnerships that operate qualified affordable housing projects or that invest in other limited partnerships formed to operate affordable housing projects. These investments are considered variable interest entities for which Peoples is not the primary beneficiary. Peoples generally utilizes the effective yield method to account for these investments with the tax credits, net of the amortization of the investment, reflected in the Consolidated Statements of Income as a reduction of income tax expense. The unamortized amount of the investments is recorded in other assets and totaled $ 3,000 and $ 45,000 at December 31, 2015 and 2014 , respectively.
Other Real Estate Owned	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 Bank 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 costs to sell the property. Peoples had OREO totaling $ 0.7 million at December 31, 2015 and $ 0.9 million at December 31, 2014 .
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets: Goodwill represents the excess of the cost of an acquisition over the fair value of the net assets acquired in the business combination. Goodwill is not amortized but is tested for impairment when indicators of impairment exist, or at least annually on June 30. Based upon the most recently completed goodwill impairment test, Peoples concluded the recorded value of goodwill was not impaired as of December 31, 2015 , based upon the estimated fair value of Peoples' single reporting unit. Peoples' other intangible assets consist of customer relationship and core deposit intangible assets representing the net present value of future economic benefit to be earned from acquired customer relationships with definite useful lives. These intangible assets are amortized on an accelerated basis over their estimated lives ranging from 7 to 10 years.
Mortgage Servicing Rights	Servicing Rights: Servicing rights (“SRs”) represent the right to service loans sold to third-party investors. SRs are recognized separately as a servicing asset or liability whenever Peoples undertakes an obligation to service financial assets. SRs are reported in other intangible assets on the Consolidated Balance Sheets. Serviced loans are not included in the Consolidated Balance Sheets. Loan servicing income included in mortgage banking income includes servicing fees received from the third-party investors and certain charges collected from the borrowers. Peoples initially records SRs 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 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.
Trust Assets Under Management	Trust Assets Under Management: Peoples Bank manages certain assets held in a fiduciary or agency capacity for customers. These assets under management, other than cash on deposit at Peoples Bank, are not included in the Consolidated Balance Sheets since they are not assets of Peoples Bank.
Interest Income Recognition	Interest Income Recognition: Interest income on loans and investment securities is recognized by methods that result in level rates of return on principal amounts outstanding. Amortization of premiums is deducted from, and accretion of discounts is added to, the related interest income. Nonrefundable loan fees and direct loan costs are deferred and recognized over the life of the loan as an adjustment of the yield. Peoples discontinues the accrual of interest on all loans, whether or not such loans are considered past due, when management believes it is probable the borrower will be unable to meet its payment obligations as they become due, as well as when required by regulatory provisions. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest received on nonaccrual loans is included in income only if principal recovery is reasonably assured. A nonaccrual loan is restored to accrual status when it is brought current, has performed in accordance with contractual terms for a reasonable period of time, and the collectability of the total contractual principal and interest is no longer in doubt.
Other Income Recognition	Other Income Recognition: Service charges on deposits include cost recovery fees associated with services provided, such as overdraft and non-sufficient funds. Trust and investment income consists of revenue from fiduciary activities, which include fees for services such as asset management, recordkeeping, retirement services and estate management, and investment commissions and fees related to the sale of investments. Income from these activities is recognized at the time the related services are performed. Insurance income consists of commissions and fees from the sales of insurance policies and related insurance services. Insurance income is recognized when it is earned and can be reasonably estimated. Performance-based commissions from insurance companies are recognized when received and no contingencies remain.
Income Taxes	Income Taxes: Peoples and its subsidiaries file a consolidated federal income tax return. Deferred income tax assets and liabilities are provided for temporary differences between the tax basis of an asset or liability and its reported amount in the Consolidated Financial Statements at the statutory federal tax rate. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. The components of accumulated other comprehensive income or loss included in the Consolidated Statements of Stockholders' Equity have been computed based upon a 35% federal tax rate. A tax position is initially recognized in the financial statements when it is more likely than not the position will be sustained upon examination by the tax authorities. Such tax positions are initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with the tax authority assuming full knowledge of the position and all relevant facts. Penalties and interest incurred under the applicable tax law are classified as income tax expense. The amount of Peoples' valuation allowance and uncertain income tax positions and unrecognized benefits are disclosed in Note 12.
Advertising Costs	Advertising Costs: Advertising costs are generally expensed as incurred.
Earnings Per Share	Earnings per Share: Basic and diluted earnings per common share (“EPS”) are calculated using the two-class method since Peoples has issued some share-based payment awards considered participating securities because they entitle holders the rights to dividends during the vesting term. The two-class method is an earnings allocation formula that determines net income per share for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. Basic earnings per common share is computed by dividing net earnings allocated to common shareholders by the weighted-average number of common shares outstanding. Diluted earnings per common share is computed by dividing net earnings allocated to common shareholders by the weighted-average number of common shares outstanding adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental common shares issuable upon exercise of outstanding stock options, stock appreciation rights and non-vested restricted common shares using the treasury stock method.
Operating Segments	Operating Segments: Peoples' business activities are currently confined to one reporting unit and reportable segment, which is community banking. As a community banking entity, Peoples offers its customers a full range of products including a complete line of banking, insurance, investment and trust solutions.
Stock-Based Compensation	Stock-Based Compensation: Compensation costs for stock options, restricted stock awards and stock appreciation rights are measured at the fair value of these awards on their grant date. Compensation expense is recognized over the required service period, generally the vesting period for stock options and stock appreciation rights and the restriction period for restricted stock awards. For all awards, only the expense for the portion of the awards expected to vest is recognized. For service-based awards, compensation expense for awards granted to employees who are eligible for retirement is recognized to the date the employee is first eligible to retire.
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. Unless otherwise discussed, management believes the impact of any recently issued standards, including those issued but not yet effective, will not have a material impact on Peoples financial statements taken as a whole. In September 2015, the FASB issued an accounting standards update 2015-16 - Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments. The simplification eliminates the requirement for an acquirer in a business combination to account for measurement-period adjustments retrospectively. Instead, acquirers must recognize measurement-period adjustments during the period in which they determine the amounts of such adjustments, including the effect on earnings of any amounts they would have recorded in previous periods if the accounting had been completed at the acquisition date. For public business entities (such as Peoples), the amendments are effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments are to be applied prospectively to adjustments to provisional amounts that occur after the effective date of the amendments with earlier application permitted for financial statements that have not been issued. Peoples elected to early adopt as of July 1, 2015, and will recognize measurement-period adjustments during the period in which Peoples determines the amounts of such adjustments, including the effect on earnings of any amounts that would have been recorded in previous periods if the accounting had been completed at the acquisition date. In May 2014, the FASB issued new accounting guidance that revises the criteria for determining when to recognize revenue from contracts with customers and expands disclosure requirements. This accounting guidance can be implemented using either a retrospective method or a cumulative-effect approach. In August 2015, the FASB issued an update that defers the effective date of the revenue recognition guidance by one year. This new guidance will be effective for interim and annual reporting periods beginning after December 15, 2017 (effective January 1, 2018, for Peoples). Early adoption is permitted but only for interim and annual reporting periods beginning after December 15, 2016. Peoples has elected to implement this new accounting guidance using a cumulative-effect approach. Management's preliminary analysis suggests that the adoption of this new accounting guidance is not expected to have a material effect on Peoples' financial condition or results of operations. There are many aspects of this new accounting guidance that are still being interpreted, and the FASB has recently issued and proposed updates to certain aspects of the guidance. Therefore, the results of Peoples' preliminary analysis of the materiality of the adoption of this new accounting guidance may change based on the conclusions reached as to the application of the new accounting gu idance.

Fair Value of Financial Instr28

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Assets measured on recurring basis	Assets measured at fair value on a recurring basis comprised the following at December 31 : Fair Value Measurements at Reporting Date Using (Dollars in thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value 2015 Obligations of: U.S. Treasury and government agencies $ — $ — $ — $ — U.S. government sponsored agencies 2,966 — 2,966 — States and political subdivisions 114,726 — 114,726 — Residential mortgage-backed securities 632,293 — 632,293 — Commercial mortgage-backed securities 23,845 — 23,845 — Bank-issued trust preferred securities 4,635 — 4,635 — Equity securities 6,236 6,024 212 — Total available-for-sale securities $ 784,701 $ 6,024 $ 778,677 $ — 2014 Obligations of: U.S. Treasury and government agencies $ 1 $ — $ 1 $ — U.S. government sponsored agencies 5,950 — 5,950 — States and political subdivisions 64,743 — 64,743 — Residential mortgage-backed securities 527,291 — 527,291 — Commercial mortgage-backed securities 27,847 — 27,847 — Bank-issued trust preferred securities 5,645 — 5,645 — Equity securities 5,403 5,204 199 — Total available-for-sale securities $ 636,880 $ 5,204 $ 631,676 $ — Held-to-maturity securities reported at fair value comprised the following at December 31 : Fair Value at Reporting Date Using (Dollars in thousands) Quoted Prices in Active Markets for Identical Assets Significant Significant Unobservable Inputs Fair Value 2015 Obligations of: States and political subdivisions $ 4,221 $ — $ 4,221 $ — Residential mortgage-backed securities 35,196 — 35,196 — Commercial mortgage-backed securities 6,436 — 6,436 — Total held-to-maturity securities $ 45,853 $ — $ 45,853 $ — 2014 Obligations of: States and political subdivisions $ 4,282 $ — $ 4,282 $ — Residential mortgage-backed securities 36,740 — 36,740 — Commercial mortgage-backed securities 7,420 — 7,420 — Total held-to-maturity securities $ 48,442 $ — $ 48,442 $ —
Fair Values of Financial Assets and Liabilities on Balance Sheets	The following table presents the fair values of financial assets and liabilities carried on Peoples’ Consolidated Balance Sheets, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis at December 31: 2015 2014 (Dollars in thousands) Carrying Amount Fair Value Carrying Amount Fair Value Financial assets : Cash and cash equivalents $ 71,115 $ 71,115 $ 61,454 $ 61,454 Investment securities 868,830 868,955 713,659 713,633 Loans 2,057,614 2,018,482 1,607,391 1,581,813 Financial liabilities: Deposits $ 2,535,944 $ 2,540,131 $ 1,933,074 $ 1,938,021 Short-term borrowings 160,386 160,386 88,277 88,277 Long-term borrowings 113,670 117,299 179,083 183,878

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2015
Investment Disclosures
Summary of Available-for-sale Investment Securities	Available-for-sale The following table summarizes Peoples’ available-for-sale investment securities at December 31: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2015 Obligations of: U.S. Treasury and government agencies $ — $ — $ — $ — U.S. government sponsored agencies 2,908 58 — 2,966 States and political subdivisions 111,283 3,487 (44 ) 114,726 Residential mortgage-backed securities 635,504 4,905 (8,116 ) 632,293 Commercial mortgage-backed securities 23,770 119 (44 ) 23,845 Bank-issued trust preferred securities 5,146 — (511 ) 4,635 Equity securities 1,693 4,627 (84 ) 6,236 Total available-for-sale securities $ 780,304 $ 13,196 $ (8,799 ) $ 784,701 2014 Obligations of: U.S. Treasury and government agencies $ 1 $ — $ — $ 1 U.S. government sponsored agencies 5,836 114 — 5,950 States and political subdivisions 62,292 2,510 (59 ) 64,743 Residential mortgage-backed securities 529,245 5,910 (7,864 ) 527,291 Commercial mortgage-backed securities 28,021 112 (286 ) 27,847 Bank-issued trust preferred securities 6,132 3 (490 ) 5,645 Equity securities 1,440 4,044 (81 ) 5,403 Total available-for-sale securities $ 632,967 $ 12,693 $ (8,780 ) $ 636,880
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 years ended December 31 were as follows: (Dollars in thousands) 2015 2014 2013 Gross gains realized $ 795 $ 1,136 $ 3,358 Gross losses realized 66 738 2,869 Net gain realized $ 729 $ 398 $ 489
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 at December 31: 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 2015 Obligations of: States and political subdivisions $ 7,662 $ 38 8 $ 213 $ 6 1 $ 7,875 $ 44 Residential mortgage-backed securities 303,549 3,902 76 102,090 4,214 33 405,639 8,116 Commercial mortgage-backed securities 6,682 44 3 — — — 6,682 44 Bank-issued trust preferred securities 2,129 19 1 2,506 492 3 4,635 511 Equity securities 438 15 2 106 69 1 544 84 Total $ 320,460 $ 4,018 90 $ 104,915 $ 4,781 38 $ 425,375 $ 8,799 2014 Obligations of: States and political subdivisions $ 2,602 $ 12 4 $ 5,788 $ 47 8 $ 8,390 $ 59 Residential mortgage-backed securities 114,018 1,091 21 216,224 6,773 57 330,242 7,864 Commercial mortgage-backed securities — — — 19,404 286 4 19,404 286 Bank-issued trust preferred securities — — — 2,509 490 3 2,509 490 Equity securities 40 2 2 96 79 1 136 81 Total $ 116,660 $ 1,105 27 $ 244,021 $ 7,675 73 $ 360,681 $ 8,780
Summary of Held-to-maturity Investment Securities	The following table summarizes Peoples’ held-to-maturity investment securities at December 31: (Dollars in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2015 Obligations of: States and political subdivisions $ 3,831 $ 394 $ (4 ) $ 4,221 Residential mortgage-backed securities 35,367 363 (534 ) 35,196 Commercial mortgage-backed securities 6,530 — (94 ) 6,436 Total held-to-maturity securities $ 45,728 $ 757 $ (632 ) $ 45,853 2014 Obligations of: States and political subdivisions $ 3,841 $ 448 $ (7 ) $ 4,282 Residential mortgage-backed securities 36,945 189 (394 ) 36,740 Commercial mortgage-backed securities 7,682 9 (271 ) 7,420 Total held-to-maturity securities $ 48,468 $ 646 $ (672 ) $ 48,442
Available-for-sale securities
Investment Disclosures
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 December 31, 2015 . 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. Rates are calculated on a fully tax-equivalent basis using a 35% federal income tax rate. (Dollars in thousands) Within 1 Year 1 to 5 Years 5 to 10 Years Over 10 Years Total Amortized cost Obligations of: U.S. government sponsored agencies $ — $ 991 $ — $ 1,917 $ 2,908 States and political subdivisions 240 10,649 32,475 67,919 111,283 Residential mortgage-backed securities 1 13,480 50,013 572,010 635,504 Commercial mortgage-backed securities — — 19,994 3,776 23,770 Bank-issued trust preferred securities — — — 5,146 5,146 Equity securities 1,693 Total available-for-sale securities $ 241 $ 25,120 $ 102,482 $ 650,768 $ 780,304 Fair value Obligations of: U.S. government sponsored agencies $ — $ 1,000 $ — $ 1,966 $ 2,966 States and political subdivisions 247 10,972 33,438 70,069 114,726 Residential mortgage-backed securities 1 13,269 50,350 568,673 632,293 Commercial mortgage-backed securities — — 20,033 3,812 23,845 Bank-issued trust preferred securities — — — 4,635 4,635 Equity securities 6,236 Total available-for-sale securities $ 248 $ 25,241 $ 103,821 $ 649,155 $ 784,701 Total weighted-average yield 5.35 % 2.97 % 2.98 % 2.61 % 2.68 %
Held-to-maturity securities
Investment Disclosures
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 December 31, 2015 . 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. Rates are calculated on a fully tax-equivalent basis using a 35% federal income tax rate. (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 $ — $ 324 $ 976 $ 2,531 $ 3,831 Residential mortgage-backed securities — — 487 34,880 35,367 Commercial mortgage-backed securities — — — 6,530 6,530 Total held-to-maturity securities $ — $ 324 $ 1,463 $ 43,941 $ 45,728 Fair value Obligations of: States and political subdivisions $ — $ 319 $ 1,109 $ 2,793 $ 4,221 Residential mortgage-backed securities — — 483 34,713 35,196 Commercial mortgage-backed securities — — — 6,436 6,436 Total held-to-maturity securities $ — $ 319 $ 1,592 $ 43,942 $ 45,853 Total weighted-average yield — % 3.14 % 1.72 % 2.60 % 2.57 %
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 at December 31: 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 2015 Obligations of: States and political subdivisions $ — $ — — $ 319 $ 4 1 $ 319 $ 4 Residential mortgage-backed securities 3,706 89 2 10,040 445 2 13,746 534 Commercial mortgage-backed securities 540 4 1 5,895 90 1 6,435 94 Total $ 4,246 $ 93 3 $ 16,254 $ 539 4 $ 20,500 $ 632 2014 Obligations of: States and political subdivisions $ — $ — — $ 323 $ 7 1 $ 323 $ 7 Residential mortgage-backed securities — — — 18,242 394 5 18,242 394 Commercial mortgage-backed securities — — — 6,356 271 1 6,356 271 Total $ — $ — — $ 24,921 $ 672 7 $ 24,921 $ 672

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Loan Classification by Type	The major classifications of loan balances, excluding loans held for sale, were as follows at December 31: (Dollars in thousands) 2015 2014 Originated loans: Commercial real estate, construction $ 63,785 $ 37,901 Commercial real estate, other 471,184 434,660 Commercial real estate 534,969 472,561 Commercial and industrial 288,130 249,975 Residential real estate 288,783 254,169 Home equity lines of credit 74,176 62,463 Consumer 227,133 169,913 Deposit account overdrafts 1,448 2,933 Total originated loans $ 1,414,639 $ 1,212,014 Acquired loans: Commercial real estate, construction $ 12,114 $ 1,051 Commercial real estate, other 265,092 121,475 Commercial real estate 277,206 122,526 Commercial and industrial 63,589 30,056 Residential real estate 276,772 225,274 Home equity lines of credit 32,253 18,232 Consumer 7,981 12,796 Deposit account overdrafts — — Total acquired loans $ 657,801 $ 408,884 Total loans $ 2,072,440 $ 1,620,898
Purchased Credit Impaired Loans	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, commonly referred to as "purchased credit impaired" loans. The carrying amounts of these loans included in the loan balances above are summarized as follows at December 31: (Dollars in thousands) 2015 2014 Commercial real estate $ 16,893 $ 7,762 Commercial and industrial 3,040 1,041 Residential real estate 27,155 15,183 Consumer 193 306 Total outstanding balance $ 47,281 $ 24,292 Net carrying amount $ 35,064 $ 19,067
Accretable Yield Rollforward	Changes in the accretable yield for acquired purchased credit impaired loans the year ended December 31, 2015 were as follows: (Dollars in thousands) Accretable Yield Balance, December 31, 2014 $ 3,172 Additions: Reclassification from nonaccretable to accretable 2,093 NB&T Financial Group, Inc. 3,611 Accretion (1,834 ) Balance, December 31, 2015 $ 7,042
Related Party Loans	Activity in related party loans is presented in the table below. Other changes primarily consist of changes in related party status and new directors elected during the year. (Dollars in thousands) Balance, December 31, 2014 $ 15,192 New loans and disbursements 10,361 Repayments (6,915 ) Other changes (538 ) Balance, December 31, 2015 $ 18,100
Nonaccrual and Past Due Loans	The recorded investments in loans on nonaccrual status and accruing loans delinquent for 90 days or more were as follows at December 31: Accruing Loans 90+ Days Past Due Nonaccrual Loans (Dollars in thousands) 2015 2014 2015 2014 Originated loans: Commercial real estate, construction $ 921 $ — $ — $ — Commercial real estate, other 7,041 2,575 — — Commercial real estate 7,962 2,575 — — Commercial and industrial 480 1,286 680 — Residential real estate 3,057 3,049 169 818 Home equity lines of credit 321 341 — 20 Consumer 92 19 1 2 Total originated loans $ 11,912 $ 7,270 $ 850 $ 840 Acquired loans: Commercial real estate, construction $ — $ 96 $ — $ — Commercial real estate, other 469 9 2,425 567 Commercial real estate 469 105 2,425 567 Commercial and industrial 247 708 1,306 301 Residential real estate 798 304 1,353 1,083 Home equity lines of credit 98 19 35 — Consumer 7 — — 8 Total acquired loans $ 1,619 $ 1,136 $ 5,119 $ 1,959 Total loans $ 13,531 $ 8,406 $ 5,969 $ 2,799
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 and leases at December 31: Loans Past Due Current Loans Total Loans (Dollars in thousands) 30 - 59 days 60 - 89 days 90 + Days Total 2015 Originated loans: Commercial real estate, construction $ 913 $ — $ 8 $ 921 $ 62,864 $ 63,785 Commercial real estate, other 7,260 1,258 379 8,897 462,287 471,184 Commercial real estate 8,173 1,258 387 9,818 525,151 534,969 Commercial and industrial 1,437 215 767 2,419 285,711 288,130 Residential real estate 3,124 1,105 1,263 5,492 283,291 288,783 Home equity lines of credit 161 7 104 272 73,904 74,176 Consumer 1,387 250 32 1,669 225,464 227,133 Deposit account overdrafts — — — — 1,448 1,448 Total originated loans $ 14,282 $ 2,835 $ 2,553 $ 19,670 $ 1,394,969 $ 1,414,639 Acquired loans: Commercial real estate, construction $ — $ — $ 40 $ 40 $ 12,074 $ 12,114 Commercial real estate, other 1,592 352 2,730 4,674 260,418 265,092 Commercial real estate 1,592 352 2,770 4,714 272,492 277,206 Commercial and industrial 177 232 1,553 1,962 61,627 63,589 Residential real estate 4,910 2,480 1,745 9,135 267,637 276,772 Home equity lines of credit 318 20 95 433 31,820 32,253 Consumer 90 31 — 121 7,860 7,981 Deposit account overdrafts — — — — — — Total acquired loans $ 7,087 $ 3,115 $ 6,163 $ 16,365 $ 641,436 $ 657,801 Total loans $ 21,369 $ 5,950 $ 8,716 $ 36,035 $ 2,036,405 $ 2,072,440 2014 Originated loans: Commercial real estate, construction $ — $ — $ — $ — $ 37,901 $ 37,901 Commercial real estate, other 565 285 1,220 2,070 432,590 434,660 Commercial real estate 565 285 1,220 2,070 470,491 472,561 Commercial and industrial 17 18 1,245 1,280 248,695 249,975 Residential real estate 4,502 1,062 1,902 7,466 246,703 254,169 Home equity lines of credit 344 425 129 898 61,565 62,463 Consumer 1,136 157 2 1,295 168,618 169,913 Deposit account overdrafts 65 — — 65 2,868 2,933 Total originated loans $ 6,629 $ 1,947 $ 4,498 $ 13,074 $ 1,198,940 $ 1,212,014 Acquired loans: Commercial real estate, construction $ — $ — $ 96 $ 96 $ 955 $ 1,051 Commercial real estate, other 1,067 143 567 1,777 119,698 121,475 Commercial real estate 1,067 143 663 1,873 120,653 122,526 Commercial and industrial 46 6 815 867 29,189 30,056 Residential real estate 4,026 1,331 1,179 6,536 218,738 225,274 Home equity lines of credit 9 19 — 28 18,204 18,232 Consumer 245 27 8 280 12,516 12,796 Deposit account overdrafts — — — — — — Total acquired loans $ 5,393 $ 1,526 $ 2,665 $ 9,584 $ 399,300 $ 408,884 Total loans $ 12,022 $ 3,473 $ 7,163 $ 22,658 $ 1,598,240 $ 1,620,898
Loans By Risk Category	The following table summarizes the risk category of Peoples' loan portfolio based upon the most recent analysis performed at December 31: Pass Rated Watch Substandard Doubtful Not Rated Total Loans (Dollars in thousands) (Grades 1 - 4) (Grade 5) (Grade 6) (Grade 7) 2015 Originated loans: Commercial real estate, construction $ 62,225 $ — $ 913 $ — $ 647 $ 63,785 Commercial real estate, other 434,868 18,710 17,595 — 11 471,184 Commercial real estate 497,093 18,710 18,508 — 658 534,969 Commercial and industrial 259,183 23,601 5,344 — 2 288,130 Residential real estate 21,903 1,168 12,282 187 253,243 288,783 Home equity lines of credit 785 — 175 — 73,216 74,176 Consumer 208 — 3 — 226,922 227,133 Deposit account overdrafts — — — — 1,448 1,448 Total originated loans $ 779,172 $ 43,479 $ 36,312 $ 187 $ 555,489 $ 1,414,639 Acquired loans: Commercial real estate, construction $ 12,114 $ — $ — $ — $ — $ 12,114 Commercial real estate, other 233,630 13,866 17,521 75 — 265,092 Commercial real estate 245,744 13,866 17,521 75 — 277,206 Commercial and industrial 56,077 3,078 4,238 196 — 63,589 Residential real estate 18,027 1,409 1,786 — 255,550 276,772 Home equity lines of credit 316 — — — 31,937 32,253 Consumer 256 — — — 7,725 7,981 Deposit account overdrafts — — — — — — Total acquired loans $ 320,420 $ 18,353 $ 23,545 $ 271 $ 295,212 $ 657,801 Total loans $ 1,099,592 $ 61,832 $ 59,857 $ 458 $ 850,701 $ 2,072,440 2014 Originated loans: Commercial real estate, construction $ 37,637 $ — $ — $ — $ 264 $ 37,901 Commercial real estate, other 405,224 12,316 17,120 — — 434,660 Commercial real estate 442,861 12,316 17,120 — 264 472,561 Commercial and industrial 239,168 8,122 2,684 1 — 249,975 Residential real estate 21,296 1,195 11,601 56 220,021 254,169 Home equity lines of credit 767 — 965 — 60,731 62,463 Consumer 60 1 8 — 169,844 169,913 Deposit account overdrafts — — — — 2,933 2,933 Total originated loans $ 704,152 $ 21,634 $ 32,378 $ 57 $ 453,793 $ 1,212,014 Acquired loans: Commercial real estate, construction $ 955 $ — $ — $ — $ 96 $ 1,051 Commercial real estate, other 106,115 7,100 8,260 — — 121,475 Commercial real estate 107,070 7,100 8,260 — 96 122,526 Commercial and industrial 27,313 255 2,294 194 — 30,056 Residential real estate 13,458 833 1,540 — 209,443 225,274 Home equity lines of credit 98 — — — 18,134 18,232 Consumer 279 — — — 12,517 12,796 Deposit account overdrafts — — — — — — Total acquired loans $ 148,218 $ 8,188 $ 12,094 $ 194 $ 240,190 $ 408,884 Total loans $ 852,370 $ 29,822 $ 44,472 $ 251 $ 693,983 $ 1,620,898
Schedule Of Impaired Loans	The following tables summarize loans classified as impaired at December 31: Unpaid Principal Balance Recorded Investment Total Recorded Investment Average Recorded Investment Interest Income Recognized With Without Related Allowance (Dollars in thousands) Allowance Allowance 2015 Commercial real estate, construction $ 957 $ — $ 957 $ 957 $ — $ 227 $ 3 Commercial real estate, other 23,430 6,396 12,775 19,171 1,363 13,071 815 Commercial real estate $ 24,387 $ 6,396 $ 13,732 $ 20,128 $ 1,363 $ 13,298 $ 818 Commercial and industrial 5,670 1,224 4,130 5,354 351 4,049 246 Residential real estate 31,304 370 28,834 29,204 106 26,785 1,354 Home equity lines of credit 425 — 419 419 — 325 18 Consumer 383 — 298 298 — 295 28 Total $ 62,169 $ 7,990 $ 47,413 $ 55,403 $ 1,820 $ 44,752 $ 2,464 2014 Commercial real estate, construction $ 9,914 $ — $ 9,909 9,909 $ — $ 4,378 $ 540 Commercial real estate, other 8,668 653 7,742 8,395 189 4,056 248 Commercial real estate $ 18,582 $ 653 $ 17,651 $ 18,304 $ 189 $ 8,434 $ 788 Commercial and industrial 3,747 1,945 1,767 3,712 816 1,414 73 Residential real estate 6,889 53 6,372 6,425 9 3,582 272 Home equity lines of credit 500 — 498 498 — 298 18 Consumer 391 — 386 386 — 221 24 Total $ 30,109 $ 2,651 $ 26,674 $ 29,325 $ 1,014 $ 13,949 $ 1,175
Troubled Debt Restructurings on Financing Receivables	The following table summarizes the loans that were modified as a TDR during the years ended December 31, 2015 and 2014 . Recorded Investment (1) (Dollars in thousands) Number of Contracts Pre-Modification Post-Modification Remaining Recorded Investment December 31,2015 Originated loans: Commercial real estate, other 5 $ 900 $ 900 $ 881 Commercial and industrial 4 834 834 834 Residential real estate 4 207 207 115 Home equity lines of credit 11 402 402 389 Consumer 12 95 95 94 Total 36 $ 2,438 $ 2,438 $ 2,313 Acquired loans: Residential real estate 4 $ 246 $ 246 $ 246 Home equity lines of credit 1 8 8 7 Total 5 $ 254 $ 254 $ 253 December 31,2014 Originated loans: Residential real estate 22 $ 996 $ 997 $ 967 Home equity lines of credit 12 238 238 232 Consumer 10 108 108 102 Total 44 $ 1,342 $ 1,343 $ 1,301 Acquired loans: Commercial real estate, construction 1 $ 96 $ 96 $ 96 Commercial and industrial 3 605 605 594 Residential real estate 4 235 235 234 Consumer 5 9 9 6 Total 13 $ 945 $ 945 $ 930 (1) 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 loan losses in the periods ended December 31 , were as follows: (Dollars in thousands) Commercial Real Estate Commercial and Industrial Residential Real Estate Home Equity Lines of Credit Consumer Deposit Account Overdrafts Total Balance, January 1, 2015 $ 9,825 $ 4,036 $ 1,627 $ 694 $ 1,587 $ 112 $ 17,881 Charge-offs (242 ) (13,576 ) (628 ) (125 ) (1,353 ) (774 ) (16,698 ) Recoveries 104 98 315 119 755 171 1,562 Net (charge-offs) recoveries (138 ) (13,478 ) (313 ) (6 ) (598 ) (603 ) (15,136 ) (Recovery of) provision for loan losses (2,611 ) 14,824 (57 ) 44 982 612 13,794 Balance, December 31, 2015 $ 7,076 $ 5,382 $ 1,257 $ 732 $ 1,971 $ 121 $ 16,539 Period-end amount allocated to: Loans individually evaluated for impairment $ 1,363 $ 351 $ 106 $ — $ — $ — $ 1,820 Loans collectively evaluated for impairment 5,713 5,031 1,151 732 1,971 121 14,719 Balance, December 31, 2015 $ 7,076 $ 5,382 $ 1,257 $ 732 $ 1,971 $ 121 $ 16,539 Balance, January 1, 2014 $ 13,215 $ 2,174 $ 881 $ 343 $ 316 $ 136 $ 17,065 Charge-offs (203 ) (199 ) (478 ) (128 ) (1,191 ) (516 ) (2,715 ) Recoveries 2,060 77 169 36 697 153 3,192 Net recoveries (charge-offs) 1,857 (122 ) (309 ) (92 ) (494 ) (363 ) 477 (Recovery of) provision for loan losses (5,247 ) 1,984 1,055 443 1,765 339 339 Balance, December 31, 2014 $ 9,825 $ 4,036 $ 1,627 $ 694 $ 1,587 $ 112 $ 17,881 Period-end amount allocated to: Loans individually evaluated for impairment $ 189 $ 816 $ 9 $ — $ — $ — $ 1,014 Loans collectively evaluated for impairment 9,636 3,220 1,618 694 1,587 112 16,867 Balance, December 31, 2014 $ 9,825 $ 4,036 $ 1,627 $ 694 $ 1,587 $ 112 $ 17,881
Allowance for Loan Losses Acquired Loans [Table Text Block]	The following table presents activity in the allowance for loan losses for acquired loans as of December 31: (Dollars in thousands) 2015 2014 2013 Purchased credit impaired loans: Balance, January 1 $ — $ — $ — Charge-offs (63 ) — — Recoveries — — — Net recoveries (charge-offs) (63 ) — — Provision for loan losses 303 — — Balance, December 31 $ 240 $ — $ —

Bank Premises and Equipment (Ta

Bank Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Bank Premises and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]	The major categories of bank premises and equipment and accumulated depreciation at December 31 are summarized as follows: (Dollars in thousands) 2015 2014 Land $ 11,976 $ 7,612 Building and premises 58,607 48,402 Furniture, fixtures and equipment 25,487 22,323 Total bank premises and equipment 96,070 78,337 Accumulated depreciation (42,583 ) (38,002 ) Net book value $ 53,487 $ 40,335
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	The future minimum payments under noncancellable operating leases with initial or remaining terms of one year or more consisted of the following at December 31, 2015 : (Dollars in thousands) Payments 2016 $ 916 2017 612 2018 486 2019 224 2020 58 Thereafter 272 Total future operating lease payments $ 2,568

Goodwill and Other Intangible32

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Other Intangible Assets [Abstract]
Schedule of Goodwill [Table Text Block]	The following table details changes in the recorded amount of goodwill for the years ended December 31 : (Dollars in thousands) 2015 2014 Goodwill, beginning of year $ 98,562 $ 70,520 Acquired goodwill 34,069 28,042 Goodwill, end of year $ 132,631 $ 98,562
Schedule of Other Intangible Assets	Other intangible assets were comprised of the following at December 31: (Dollars in thousands) Core Deposits Customer Relationships Total 2015 Gross intangibles $ 7,013 $ 8,858 $ 15,871 Acquired intangibles 8,623 1,695 10,318 Accumulated amortization (4,396 ) (7,194 ) (11,590 ) Total acquired intangibles $ 11,240 $ 3,359 $ 14,599 Servicing rights 2,387 Total other intangibles $ 16,986 2014 Gross intangibles $ 2,226 $ 8,646 $ 10,872 Acquired intangibles 4,787 212 4,999 Accumulated amortization (1,156 ) (6,357 ) (7,513 ) Total acquired intangibles $ 5,857 $ 2,501 $ 8,358 Servicing rights 2,238 Total other intangibles $ 10,596
Schedule of Future Amortization of Other Intangible Assets	The following table details estimated aggregate future amortization expense of core deposit and customer relationship intangible assets at December 31, 2015 : (Dollars in thousands) Core Deposits Customer Relationships Total 2016 $ 3,114 $ 833 $ 3,947 2017 2,608 722 3,330 2018 2,098 606 2,704 2019 1,586 482 2,068 2020 1,071 352 1,423 Thereafter 763 364 1,127 Total $ 11,240 $ 3,359 $ 14,599
Servicing Rights Activity	The following is an analysis of activity of servicing rights for the years ended December 31: (Dollars in thousands) 2015 2014 2013 Balance, beginning of year $ 2,238 $ 2,295 $ 2,073 Amortization (662 ) (597 ) (652 ) Servicing rights originated 566 497 675 Servicing rights acquired 245 43 199 Balance, end of year $ 2,387 $ 2,238 $ 2,295

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2015
Deposits [Abstract]
Deposit Balances	Peoples’ deposit balances were comprised of the following at December 31: (Dollars in thousands) 2015 2014 Retail certificates of deposit: $250,000 or more $ 62,541 $ 59,031 Less than $250,000 386,451 373,532 Retail certificates of deposit 448,992 432,563 Savings accounts 414,375 295,307 Money market deposit accounts 394,119 337,387 Governmental deposit accounts 276,639 161,305 Interest-bearing transaction accounts 250,023 173,659 Brokered certificates of deposits 33,857 39,691 Total interest-bearing deposits 1,818,005 1,439,912 Non-interest-bearing deposits 717,939 493,162 Total deposits $ 2,535,944 $ 1,933,074
Schedule of Maturities of Certificates of Deposit	The contractual maturities of certificates of deposits for each of the next five years and thereafter are as follows: (Dollars in thousands) Retail Brokered Total 2016 $ 261,907 $ 18,187 $ 280,094 2017 84,230 — 84,230 2018 46,106 1,147 47,253 2019 28,614 14,523 43,137 2020 26,773 — 26,773 Thereafter 1,362 — 1,362 Total deposits $ 448,992 $ 33,857 $ 482,849

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2015
Short-term Debt [Abstract]
Schedule of Short-term Borrowings	Peoples utilizes various short-term borrowings as sources of funds, which are summarized as follows at December 31: (Dollars in thousands) Retail Repurchase Agreements FHLB Advances Other Short-Term Borrowings 2015 Ending balance $ 84,386 $ 76,000 $ — Average balance 83,574 16,863 — Highest month-end balance 92,711 76,000 — Interest expense 140 42 — Weighted-average interest rate: End of year 0.17 % 0.35 % — % During the year 0.17 % 0.25 % — % 2014 Ending balance $ 73,277 $ 15,000 $ — Average balance 59,324 36,678 38 Highest month-end balance 76,459 108,000 — Interest expense 99 47 — Weighted-average interest rate: End of year 0.17 % 0.14 % — % During the year 0.17 % 0.13 % 0.75 % 2013 Ending balance $ 42,590 $ 71,000 $ — Average balance 37,077 44,127 90 Highest month-end balance 46,850 92,500 — Interest expense 58 55 1 Weighted-average interest rate: End of year 0.16 % 0.14 % — % During the year 0.16 % 0.12 % 0.74 %

Long-Term Borrowings (Tables)

Long-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Schedule of Long-Term Borrowings	Long-term borrowings consisted of the following at December 31 : 2015 2014 (Dollars in thousands) Balance Weighted- Average Rate Balance Weighted- Average Rate FHLB putable non-amortizing, fixed-rate advances $ 50,000 3.32 % $ 83,995 3.30 % FHLB amortizing, fixed-rate advances 16,934 2.69 % 40,719 2.13 % Callable national market repurchase agreements 40,000 3.63 % 40,000 3.63 % Junior subordinated debt securities 6,736 1.83 % — — % Term note payable (parent company) — — % 14,369 3.50 % Long-term borrowings $ 113,670 3.25 % $ 179,083 3.12 %
Schedule of Aggregate Minimum Annual Retirements of Long-Term Borrowings	At December 31, 2015 , the aggregate minimum annual retirements of long-term borrowings in future periods were as follows: (Dollars in thousands) Balance Weighted-Average Rate 2016 $ 2,945 2.38 % 2017 2,330 2.45 % 2018 82,390 3.47 % 2019 1,426 2.60 % 2020 3,901 3.36 % Thereafter 20,678 2.59 % Long-term borrowings $ 113,670 3.25 %

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity Attributable to Parent [Abstract]
Schedule of Preferred, Common and Treasury Stock	The following table details the activity in Peoples’ common stock and treasury stock during the years ended December 31 : Common Stock Treasury Stock Shares at December 31, 2012 11,252,244 607,688 Changes related to stock-based compensation awards: Grant of restricted common shares 83,206 — Release of restricted common shares — 6,862 Cancellation of restricted common shares (3,096 ) — Changes related to deferred compensation plan for Board of Directors: Purchase of treasury stock — 3,652 Reissuance of treasury stock — (9,147 ) Common shares issued under dividend reinvestment plan 19,682 — Common shares issued under compensation plan for Board of Directors — (8,261 ) Shares at December 31, 2013 11,352,036 600,794 Changes related to stock-based compensation awards: Grant of restricted common shares 101,926 — Release of restricted common shares — 18,031 Cancellation of restricted common shares (6,062 ) — Exercise of stock options for common shares — (2,792 ) Reissuance of treasury stock for common stock awards — (12,030 ) Grant of common shares 100 — Changes related to deferred compensation plan for Board of Directors: Purchase of treasury stock — 4,236 Reissuance of treasury stock — (9,390 ) Common shares issued under dividend reinvestment plan 17,230 — Common shares issued under compensation plan for Board of Directors — (8,603 ) Issuance of common shares related to acquisitions: Midwest Bancshares, Inc. 256,282 — Ohio Heritage Bancorp, Inc. 1,364,735 — North Akron Savings Bank 665,570 — Common shares issued to institutional investors in private placement 1,847,826 — Shares at December 31, 2014 15,599,643 590,246 Changes related to stock-based compensation awards: Grant of restricted common shares 131,011 — Release of restricted common shares — 25,205 Cancellation of restricted common shares (28,219 ) — Grant of common shares 2,810 (100 ) Changes related to deferred compensation plan for Board of Directors: Purchase of treasury stock — 7,654 Reissuance of treasury stock — (9,642 ) Common shares issued under dividend reinvestment plan 18,257 — Common shares issued under compensation plan for Board of Directors — (10,231 ) Common shares issued under employee stock purchase plan — (16,446 ) Issuance of common shares related to acquisition of NB&T Financial Group, Inc. 3,207,698 — Shares at December 31, 2015 18,931,200 586,686
Schedule of Accumulated Other Comprehensive (Loss) Income	The following details the change in the components of Peoples’ accumulated other comprehensive income (loss) for the years ended December 31 : (Dollars in thousands) Unrealized Gain (Loss) on Securities Unrecognized Net Pension and Postretirement Costs Accumulated Other Comprehensive Income (Loss) Balance, December 31, 2012 $ 6,892 $ (6,238 ) $ 654 Reclassification adjustments to net income: Realized gain on sale of securities, net of tax (318 ) — (318 ) Realized loss due to settlement and curtailment, net of tax — 175 175 Other comprehensive (loss), income net of reclassifications and tax (16,335 ) 2,580 (13,755 ) Balance, December 31, 2013 $ (9,761 ) $ (3,483 ) $ (13,244 ) Reclassification adjustments to net income: Realized gain on sale of securities, net of tax (259 ) — (259 ) Realized loss due to settlement and curtailment, net of tax — 910 910 Other comprehensive income (loss), net of reclassifications and tax 12,562 (1,270 ) 11,292 Balance, December 31, 2014 $ 2,542 $ (3,843 ) $ (1,301 ) Reclassification adjustments to net income: Realized gain on sale of securities, net of tax (474 ) — (474 ) Realized loss due to settlement and curtailment, net of tax — 298 298 Other comprehensive income, net of reclassifications and tax 801 317 1,118 Balance, December 31, 2015 $ 2,869 $ (3,228 ) $ (359 )

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Schedule of Changes in Projected Benefit Obligations and Fair Value of Assets	The following tables provide a reconciliation of the changes in the plans’ benefit obligations and fair value of assets over the two-year period ended December 31, 2015 , and a statement of the funded status as of December 31, 2015 and 2014 : Pension Benefits Postretirement Benefits (Dollars in thousands) 2015 2014 2015 2014 Change in benefit obligation: Obligation at January 1 $ 13,695 $ 14,723 $ 152 $ 143 Interest cost 447 509 4 6 Plan participants’ contributions — — 65 46 Actuarial (gain) loss (948 ) 2,060 (10 ) 26 Benefit payments (148 ) (163 ) (85 ) (69 ) Settlements (1,081 ) (3,434 ) — — Obligation at December 31 $ 11,965 $ 13,695 $ 126 $ 152 Accumulated benefit obligation at December 31 $ 11,965 $ 13,695 $ — $ — Change in plan assets: Fair value of plan assets at January 1 $ 8,259 $ 11,287 $ — $ — Actual return on plan assets (91 ) 569 — — Employer contributions 185 — 20 23 Plan participants’ contributions — — 65 46 Benefit payments (148 ) (163 ) (85 ) (69 ) Settlements (1,081 ) (3,434 ) — — Fair value of plan assets at December 31 $ 7,124 $ 8,259 $ — $ — Funded status at December 31 $ (4,841 ) $ (5,436 ) $ (126 ) $ (152 ) Amounts recognized in Consolidated Balance Sheets: Accrued benefit liability (4,841 ) (5,436 ) (126 ) (152 ) Net amount recognized $ (4,841 ) $ (5,436 ) $ (126 ) $ (152 ) Amounts recognized in Accumulated Other Comprehensive Loss: Unrecognized prior service cost $ — $ — $ (2 ) $ (2 ) Unrecognized net loss 3,275 3,886 (47 ) (43 ) Total $ 3,275 $ 3,886 $ (49 ) $ (45 ) Weighted-average assumptions at year-end: Discount rate 3.90 % 3.50 % 3.90 % 3.50 %
Schedule of Net Periodic Benefit Costs	The following tables detail the components of the net periodic benefit cost for the plans at December 31: Pension Benefits Postretirement Benefits (Dollars in thousands) 2015 2014 2013 2015 2014 2013 Interest cost $ 447 $ 509 $ 543 $ 4 $ 6 $ 5 Expected return on plan assets (493 ) (589 ) (659 ) — — — Amortization of net loss (gain) 117 137 189 (5 ) (8 ) (7 ) Settlement of benefit obligation 459 1,400 270 — — — Net periodic benefit cost $ 530 $ 1,457 $ 343 $ (1 ) $ (2 ) $ (2 ) Weighted-average assumptions: Discount rate 3.80 % 3.70 % 3.75 % 3.50 % 4.30 % 3.30 % Expected return on plan assets 7.50 % 7.50 % 7.50 % n/a n/a n/a Rate of compensation increase n/a n/a n/a n/a n/a n/a
Schedule of Allocation of Plan Assets	The following table provides the fair values of investments held in Peoples' pension plan at December 31, by major asset category: (Dollars in thousands) Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) 2015 Equity securities: Mutual funds - equity $ 4,908 $ 4,908 $ — Debt securities: Mutual funds - taxable income 1,863 1,863 — Total fair value of pension assets $ 6,771 $ 6,771 $ — 2014 Equity securities: Mutual funds - equity $ 5,756 $ 5,756 $ — Debt securities: Mutual funds - taxable income 2,128 2,128 — Total fair value of pension assets $ 7,884 $ 7,884 $ —
Schedule of Estimated Future Benefit Payments	Estimated future benefit payments, which reflect benefits attributable to estimated future service, for the years ending December 31 are as follows: (Dollars in thousands) Pension Benefits Postretirement Benefits 2016 $ 1,090 $ 21 2017 801 13 2018 853 12 2019 842 12 2020 959 12 2021 to 2025 3,720 48 Total $ 8,265 $ 118

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Taxes [Abstract]
Summary of Income Tax Contingencies [Table Text Block]	The following table provides a reconciliation of uncertain tax positions at December 31: (Dollars in thousands) 2015 2014 Uncertain tax positions, beginning of year $ 240 $ 30 Gross increase based on tax positions related to current year 182 178 Gross increase for tax position taken during prior years — 33 Gross decrease for tax positions taken during prior years (2 ) — Gross decrease due to the statute of limitations (3 ) (1 ) Uncertain tax positions, end of year $ 417 $ 240
Schedule of Effective Income Tax Rate Reconciliation	The reported income tax expense and effective tax rate in the Consolidated Statements of Income differs from the amounts computed by applying the statutory corporate tax rate as follows for the years ended December 31 : 2015 2014 2013 (Dollars in thousands) Amount Rate Amount Rate Amount Rate Income tax computed at statutory federal tax rate $ 5,051 34.1 % $ 8,462 35.0 % $ 10,179 35.0 % Differences in rate resulting from: Tax-exempt interest income (1,109 ) (7.5 )% (726 ) (3.0 )% (645 ) (2.2 )% Investments in tax credit funds (123 ) (0.8 )% (481 ) (2.0 )% (314 ) (1.1 )% Bank owned life insurance (204 ) (1.4 )% (37 ) — % 2,183 7.5 % Other, net 260 1.8 % 276 1.0 % 107 0.4 % Income tax expense $ 3,875 26.2 % $ 7,494 31.0 % $ 11,510 39.6 %
Schedule of Components of Income Tax Expense (Benefit)	Peoples' reported income tax expense consisted of the following for the years ended December 31 : (Dollars in thousands) 2015 2014 2013 Current income tax expense $ 5,457 $ 3,659 $ 6,883 Deferred income tax (benefit) expense (1,582 ) 3,835 4,627 Income tax expense $ 3,875 $ 7,494 $ 11,510
Schedule of Deferred Tax Assets and Liabilities	The significant components of Peoples' deferred tax assets and liabilities consisted of the following at December 31 : (Dollars in thousands) 2015 2014 Deferred tax assets: Allowance for loan losses $ 12,144 $ 10,493 Bank premises and equipment 1,060 — Available-for-sale securities — — Investments 1,842 1,956 Accrued employee benefits 2,748 2,662 Other 3,803 1,146 Gross deferred tax assets $ 21,597 $ 16,257 Valuation allowance 605 — Total deferred tax assets $ 20,992 $ 16,257 Deferred tax liabilities: Purchase accounting adjustments 11,342 6,316 Available-for-sale securities 1,544 1,368 Bank premises and equipment — 2,470 Deferred loan income 2,260 1,924 Other 664 684 Total deferred tax liabilities $ 15,810 $ 12,762 Net deferred tax asset $ 5,182 $ 3,495

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Calculations of Basic and Diluted Earnings per Common Share	The calculations of basic and diluted earnings per common share for the years ended December 31 were as follows: (Dollars in thousands, except per common share data) 2015 2014 2013 Distributed earnings allocated to common shareholders $ 10,426 $ 7,095 $ 5,749 Undistributed earnings allocated to common shareholders 404 9,472 11,685 Net earnings allocated to common shareholders $ 10,830 $ 16,567 $ 17,434 Weighted-average common shares outstanding 17,555,140 12,183,352 10,581,222 Effect of potentially dilutive common shares 132,655 122,872 98,195 Total weighted-average diluted common shares outstanding 17,687,795 12,306,224 10,679,417 Earnings per common share: Basic $ 0.62 $ 1.36 $ 1.65 Diluted $ 0.61 $ 1.35 $ 1.63 Anti-dilutive common shares excluded from calculation: Stock options and stock appreciation rights 46,109 55,184 91,902

Financial Instruments with Of40

Financial Instruments with Off-Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2015
Financial Instruments with Off-Balance Sheet Risk [Abstract]
Loan Commitments and Standby Letters of Credit [Table Text Block]	The total amounts of loan commitments and standby letters of credit at December 31 are summarized as follows: (Dollars in thousands) 2015 2014 Home equity lines of credit $ 84,148 $ 62,704 Unadvanced construction loans 77,479 46,781 Other loan commitments 233,689 173,746 Loan commitments 395,316 283,231 Standby letters of credit $ 22,970 $ 30,837

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2015
Regulatory Matters [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Peoples and Peoples Bank's actual capital amounts and ratios as of December 31 are also presented in the following table: 2015 2014 (Dollars in thousands) Amount Ratio Amount Ratio PEOPLES Common Equity Tier 1 (1) Actual 288,416 13.4 % N/A N/A For capital adequacy 97,083 4.5 % N/A N/A To be well capitalized 140,232 6.5 % N/A N/A Tier 1 (2) Actual $ 295,151 13.7 % $ 241,707 14.3 % For capital adequacy 129,445 6.0 % 67,519 4.0 % To be well capitalized 172,593 8.0 % 101,278 6.0 % Total Capital (3) Actual $ 313,974 14.6 % $ 261,371 15.5 % For capital adequacy 172,593 8.0 % 135,037 8.0 % To be well capitalized 215,741 10.0 % 168,797 10.0 % Tier 1 Leverage (4) Actual $ 295,151 9.5 % $ 241,707 9.9 % For capital adequacy 123,973 4.0 % 97,470 4.0 % To be well capitalized 154,967 5.0 % 121,837 5.0 % Net Risk-Weighted Assets $ 2,157,410 $ 1,687,968 PEOPLES BANK Common Equity Tier 1 (1) Actual 257,045 11.9 % N/A N/A For capital adequacy 96,916 4.5 % N/A N/A To be well capitalized 139,989 6.5 % N/A N/A Tier 1 (2) Actual $ 277,045 12.9 % $ 205,710 12.9 % For capital adequacy 129,221 6.0 % 67,464 4.0 % To be well capitalized 172,295 8.0 % 101,196 6.0 % Total Capital (3) Actual $ 293,823 13.6 % $ 223,591 13.3 % For capital adequacy 172,295 8.0 % 134,928 8.0 % To be well capitalized 215,368 10.0 % 168,660 10.0 % Tier 1 Leverage (4) Actual $ 277,045 9.0 % $ 205,710 8.5 % For capital adequacy 123,742 4.0 % 97,333 4.0 % To be well capitalized 154,677 5.0 % 121,666 5.0 % Net Risk-Weighted Assets $ 2,153,682 $ 1,686,603 (1) Ratio represents Common Equity Tier 1 capital to net risk-weighted assets (2) Ratio represents Tier 1 capital to net risk-weighted assets (3) Ratio represents total capital to net risk-weighted assets (4) Ratio represents Tier 1 capital to average assets

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Share-based Compensation [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	The following summarizes the changes to Peoples' outstanding stock options for the year ended December 31, 2015 : Number of Common Shares Subject to Options Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1 38,577 $ 28.09 Expired 18,267 27.27 Outstanding at December 31 20,310 $ 28.83 0.3 years $ — Exercisable at December 31 20,310 $ 28.83 0.3 years $ —
Schedule of Stock Options Outstanding & Exercisable by Exercise Price Range	The following table summarizes Peoples’ stock options outstanding at December 31, 2015 : Options Outstanding & Exercisable Range of Exercise Prices Common Shares Subject to Options Outstanding Weighted-Average Remaining Contractual Life Weighted-Average Exercise Price $28.25 10,310 0.1 years 28.25 $28.57 to $30.00 10,000 0.4 years 29.43 Total 20,310 0.3 years $ 28.83 The following table summarizes Peoples’ SARs outstanding at December 31, 2015 : Exercise Price Number of Common Shares Subject to SARs Outstanding & Exercisable Weighted- Average Remaining Contractual Life $23.26 2,000 1.6 years $23.77 8,782 1.9 years $29.25 6,966 1.0 year Total 17,748 1.5 years
Schedule of Stock Appreciation Rights Outstanding & Exercisable by Exercise Price	The following summarizes the changes to Peoples' outstanding SARs for the year ended December 31, 2015 : Number of Common Shares Subject to SARs Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life Aggregate Intrinsic Value Outstanding at January 1 21,292 $ 25.96 Forfeited 3,544 26.47 Outstanding at December 31 17,748 $ 25.86 1.5 years $ — Exercisable at December 31 17,748 $ 25.86 1.5 years $ —
Schedule of Restricted Shares Activity	The following summarizes the changes to Peoples’ outstanding restricted common shares for the year ended December 31, 2015 : Time Vesting Performance 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 47,591 $ 19.48 125,079 $ 21.73 Awarded 22,600 21.13 108,411 23.62 Released 36,907 18.21 49,058 21.74 Forfeited 2,550 24.94 25,669 22.70 Outstanding at December 31 30,734 $ 21.76 158,763 $ 22.86
Summary of Stock-Based Compensation and Related Tax Benefit	The following summarizes the amount of stock-based compensation expense and related tax benefit recognized at December 31: (Dollars in thousands) 2015 2014 2013 Total stock-based compensation $ 1,843 $ 2,111 $ 1,362 Recognized tax benefit (645 ) (739 ) (477 ) Net expense recognized $ 1,198 $ 1,372 $ 885

Acquisitions Acquisitions Purch

Acquisitions Acquisitions Purchase Price and Fair Value of Assets Acquired and Liabilities Assumed (Tables)	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table provides the purchase price calculation as of the date of acquisition for the NB&T acquisition, and the assets acquired and liabilities assumed at their estimated fair values. (Dollars in thousands, except per share data) NB&T Purchase Price Common shares outstanding at merger announcement 3,442,329 Cash purchase price per share $ 7.75 Cash consideration 26,678 Number of common shares of Peoples issued for each common share of acquired company 0.93 Price per Peoples common share, based on closing date $ 23.70 Common share consideration 76,027 Cash in lieu of fractional common shares of Peoples 4 Total purchase price $ 102,709 Net Assets at Fair Value Assets Cash and cash equivalents $ 124,825 Investment securities 156,392 Loans, including loans held for sale, net of deferred fees and costs 384,588 Bank premises and equipment, net 10,702 Other intangible assets 10,130 Other assets 24,458 Total assets 711,095 Liabilities Deposits 629,512 Borrowings 6,570 Accrued expenses and other liabilities 5,941 Total liabilities 642,023 Net assets $ 69,072 Goodwill $ 33,637

Acquisitions Acquisitions, Fair

Acquisitions Acquisitions, Fair Value of Loans Acquired (Tables)	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Acquired Loans at Fair Value [Table Text Block]	Acquired loans are reported net of the unamortized fair value adjustment. The following table details the fair value adjustment for acquired loans as of the acquisition date: (Dollars in thousands, except per share data) NB&T Nonimpaired Loans Contractual cash flows $ 497,451 Nonaccretable difference 45,828 Expected cash flows 451,623 Accretable yield 90,346 Fair value $ 361,277 Purchase Credit Impaired Loans Contractual cash flows $ 40,258 Nonaccretable difference 13,336 Expected cash flows 26,922 Accretable yield 3,611 Fair value $ 23,311

Acquisitions Pro Forma Informat

Acquisitions Pro Forma Information (Tables)	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Business Acquisition, Pro Forma Information [Table Text Block]	For the Twelve Months Ended December 31 (Dollars in thousands) 2015 2014 Total revenue (net interest income and non-interest income) $ 149,965 $ 141,221 Net income available to common shareholders 12,259 23,512

Parent Company Only Financial46

Parent Company Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2015
Parent Company Only Financial Information [Abstract]
Schedule of Condensed Balance Sheet	Condensed Balance Sheets December 31, (Dollars in thousands) 2015 2014 Assets: Cash and due from other banks $ 50 $ 50 Interest-bearing deposits in subsidiary bank 4,437 41,666 Due from subsidiary bank 3,875 1,015 Available-for-sale investment securities, at fair value (amortized cost of $1,255 at December 31, 2015 and December 31, 2014) 5,813 5,214 Investments in subsidiaries: Bank 385,258 281,360 Non-bank 29,155 30,693 Other assets 1,070 878 Total assets $ 429,658 $ 360,876 Liabilities: Accrued expenses and other liabilities $ 3,030 $ 6,365 Dividends payable 103 24 Long-term borrowings — 14,369 Mandatorily redeemable capital securities of subsidiary trust 6,736 — Total liabilities 9,869 20,758 Common stockholders' equity 419,789 340,118 Total stockholders' equity 419,789 340,118 Total liabilities and stockholders' equity $ 429,658 $ 360,876
Schedule of Condensed Income Statement	Condensed Statements of Income Year Ended December 31, (Dollars in thousands) 2015 2014 2013 Income: Dividends from subsidiary bank $ 17,500 $ 21,000 $ 15,000 Dividends from non-bank subsidiary 2,000 500 — Interest and other income 206 205 132 Total income 19,706 21,705 15,132 Expenses: Trust preferred securities expense 304 — — Intercompany management fees 3,171 1,546 1,257 Other expense 5,653 4,578 3,411 Total expenses 9,128 6,124 4,668 Income before federal income taxes and equity in (excess dividends from) undistributed earnings of subsidiaries 10,578 15,581 10,464 Applicable income tax benefit (3,139 ) (2,102 ) (1,510 ) (Excess dividends from) equity in undistributed earnings of subsidiaries (2,776 ) (999 ) 5,600 Net income $ 10,941 $ 16,684 $ 17,574
Schedule of Condensed Cash Flow Statement	Statements of Cash Flows Year Ended December 31, (Dollars in thousands) 2015 2014 2013 Operating activities Net income $ 10,941 $ 16,684 $ 17,574 Adjustment to reconcile net income to cash provided by operations: Depreciation, amortization and accretion, net 165 — — Excess dividends from (equity in) undistributed earnings of subsidiaries 2,776 999 (5,600 ) Other, net (1,903 ) 1,825 1,803 Net cash provided by operating activities 11,979 19,508 13,777 Investing activities Investment in subsidiaries (104,584 ) (65,822 ) — Change in receivable from subsidiary (2,860 ) (187 ) (619 ) Business combinations, net of cash received 83,391 54,386 — Net cash used in investing activities (24,053 ) (11,623 ) (619 ) Financing activities Payments on long-term borrowings (14,400 ) (4,800 ) (4,800 ) Purchase of treasury stock (741 ) (520 ) (228 ) Proceeds from issuance of common stock — 40,242 8 Cash dividends paid (10,065 ) (6,767 ) (5,419 ) Excess tax benefit for share-based payments 51 85 79 Net cash (used in) provided by financing activities (25,155 ) 28,240 (10,360 ) Net (decrease) increase in cash and cash equivalents (37,229 ) 36,125 2,798 Cash and cash equivalents at the beginning of year 41,716 5,591 2,793 Cash and cash equivalents at the end of year $ 4,487 $ 41,716 $ 5,591 Supplemental cash flow information: Interest paid $ 594 $ 672 $ 915

Summarized Quarterly Informat47

Summarized Quarterly Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Summarized Quarterly Information (Unaudited) [Abstract]
Schedule of Quarterly Financial Information	2015(a) (Dollars in thousands, except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter Total interest income $ 24,159 $ 27,566 $ 28,178 $ 28,430 Total interest expense 2,740 2,773 2,642 2,566 Net interest income 21,419 24,793 25,536 25,864 Provision for loan losses 350 672 5,837 7,238 Net loss on asset disposals and other transactions (1,103 ) (136 ) (51 ) (498 ) Net gain on investment securities 600 11 62 56 Other income 11,508 11,926 11,906 12,101 Amortization of other intangible assets 673 1,144 1,127 1,133 Acquisition-related expenses 9,043 732 109 838 Other expenses 23,198 26,902 24,876 25,306 Income tax (benefit) expense (151 ) 2,231 1,370 425 Net (loss) income $ (689 ) $ 4,913 $ 4,134 $ 2,583 Earnings (loss) per common share - Basic $ (0.04 ) $ 0.27 $ 0.23 $ 0.14 Earnings (loss) per common share - Diluted $ (0.04 ) $ 0.27 $ 0.22 $ 0.14 Weighted-average common shares outstanding - Basic 15,802,334 18,116,090 18,127,131 18,142,997 Weighted-average common shares outstanding - Diluted 15,930,235 18,253,918 18,271,979 18,278,272 2014 (b) (Dollars in thousands, except per share data) First Quarter Second Quarter (c) Third Quarter (c) Fourth Quarter Total interest income $ 18,152 $ 18,614 $ 20,566 $ 22,868 Total interest expense 2,672 2,571 2,707 2,744 Net interest income 15,480 16,043 17,859 20,124 Provision for (recovery of) loan losses 8 583 (380 ) 128 Net gain (loss) on asset disposals and other transactions 11 (187 ) (109 ) (146 ) Net (loss) gain on investment securities (30 ) 66 124 238 Other income 10,295 9,719 9,861 10,178 Amortization of other intangible assets 263 282 367 516 Acquisition-related expenses 150 1,271 1,462 1,869 Other expenses 18,404 18,451 20,378 21,596 Income tax expense 2,148 1,577 1,729 2,040 Net income $ 4,783 $ 3,477 $ 4,179 $ 4,245 Earnings per common share - Basic $ 0.45 $ 0.32 $ 0.33 $ 0.29 Earnings per common share - Diluted $ 0.44 $ 0.32 $ 0.32 $ 0.28 Weighted-average common shares outstanding - Basic 10,636,089 10,755,509 12,632,341 14,660,314 Weighted-average common shares outstanding - Diluted 10,740,884 10,880,090 12,765,880 14,809,289

Summary of Significant Accoun48

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Restricted Cash	$ 5,000,000	$ 3,500,000
Deferred Loan Costs	3,300,000	2,400,000
Individual review of impairment of unpaid principal balances in excess of	1,000,000
Annual review of loan relationships in excess of	1,000,000
Quarterly review of loan relationships in excess of	5,000,000
Unamortized Amount of Investments in Affordable Housing Limited Partnerships	3,000	45,000
Other Real Estate Owned	$ 700,000	$ 900,000
Statutory tax rate at which other comprehensive income and weighted-average rate of investment securities are calculated	35.00%
Federal income tax rate	34.10%	35.00%	35.00%
Minimum
Estimated lives	7 years
Maximum
Estimated lives	10 years

Fair Value of Financial Instr49

Fair Value of Financial Instruments Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015
Assets measured on nonrecurring basis
Losses on impaired loans charged through allowance for loan losses	$ 7,238	$ 5,837	$ 672	$ 350	$ 128	$ (380)	$ 583	$ 8
Nonrecurring Basis
Assets measured on nonrecurring basis
Losses on impaired loans charged through allowance for loan losses									$ 1,600
Nonrecurring Basis | Significant Other Observable Inputs (Level 2)
Assets measured on nonrecurring basis
Impaired loans, aggregate outstanding principal balance	51,800								51,800
Impaired loans, fair value	$ 43,700								$ 43,700

Fair Value of Financial Instr50

Fair Value of Financial Instruments Recurring basis (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investments
Total held-to-maturity securities	$ 45,853	$ 48,442
Total available-for-sale securities	784,701	636,880
Recurring Basis
Investments
Total available-for-sale securities	784,701	636,880
U.S. Treasury and government agencies
Investments
Total available-for-sale securities	0	1
U.S. Treasury and government agencies | Recurring Basis
Investments
Total available-for-sale securities	0	1
U.S. government sponsored agencies
Investments
Total available-for-sale securities	2,966	5,950
U.S. government sponsored agencies | Recurring Basis
Investments
Total available-for-sale securities	2,966	5,950
States and political subdivisions
Investments
Total held-to-maturity securities	4,221	4,282
Total available-for-sale securities	114,726	64,743
States and political subdivisions | Recurring Basis
Investments
Total available-for-sale securities	114,726	64,743
Residential mortgage-backed securities
Investments
Total held-to-maturity securities	35,196	36,740
Total available-for-sale securities	632,293	527,291
Residential mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	632,293	527,291
Commercial mortgage-backed securities
Investments
Total held-to-maturity securities	6,436	7,420
Total available-for-sale securities	23,845	27,847
Commercial mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	23,845	27,847
Bank-issued trust preferred securities
Investments
Total available-for-sale securities	4,635	5,645
Bank-issued trust preferred securities | Recurring Basis
Investments
Total available-for-sale securities	4,635	5,645
Equity securities
Investments
Total available-for-sale securities	6,236	5,403
Equity securities | Recurring Basis
Investments
Total available-for-sale securities	6,236	5,403
Quoted Prices in Active Markets for Identical Assets (Level 1)
Investments
Total held-to-maturity securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring Basis
Investments
Total available-for-sale securities	6,024	5,204
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury and government agencies | Recurring Basis
Investments
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government sponsored agencies | Recurring Basis
Investments
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | States and political subdivisions
Investments
Total held-to-maturity securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | States and political subdivisions | Recurring Basis
Investments
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential mortgage-backed securities
Investments
Total held-to-maturity securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial mortgage-backed securities
Investments
Total held-to-maturity securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Bank-issued trust preferred securities | Recurring Basis
Investments
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities | Recurring Basis
Investments
Total available-for-sale securities	6,024	5,204
Significant Other Observable Inputs (Level 2)
Investments
Total held-to-maturity securities	45,853	48,442
Significant Other Observable Inputs (Level 2) | Recurring Basis
Investments
Total available-for-sale securities	778,677	631,676
Significant Other Observable Inputs (Level 2) | U.S. Treasury and government agencies | Recurring Basis
Investments
Total available-for-sale securities	0	1
Significant Other Observable Inputs (Level 2) | U.S. government sponsored agencies | Recurring Basis
Investments
Total available-for-sale securities	2,966	5,950
Significant Other Observable Inputs (Level 2) | States and political subdivisions
Investments
Total held-to-maturity securities	4,221	4,282
Significant Other Observable Inputs (Level 2) | States and political subdivisions | Recurring Basis
Investments
Total available-for-sale securities	114,726	64,743
Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities
Investments
Total held-to-maturity securities	35,196	36,740
Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	632,293	527,291
Significant Other Observable Inputs (Level 2) | Commercial mortgage-backed securities
Investments
Total held-to-maturity securities	6,436	7,420
Significant Other Observable Inputs (Level 2) | Commercial mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	23,845	27,847
Significant Other Observable Inputs (Level 2) | Bank-issued trust preferred securities | Recurring Basis
Investments
Total available-for-sale securities	4,635	5,645
Significant Other Observable Inputs (Level 2) | Equity securities | Recurring Basis
Investments
Total available-for-sale securities	212	199
Significant Unobservable Inputs (Level 3)
Investments
Total held-to-maturity securities	0	0
Significant Unobservable Inputs (Level 3) | Recurring Basis
Investments
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | U.S. Treasury and government agencies | Recurring Basis
Investments
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | U.S. government sponsored agencies | Recurring Basis
Investments
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | States and political subdivisions
Investments
Total held-to-maturity securities	0	0
Significant Unobservable Inputs (Level 3) | States and political subdivisions | Recurring Basis
Investments
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Residential mortgage-backed securities
Investments
Total held-to-maturity securities	0	0
Significant Unobservable Inputs (Level 3) | Residential mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Commercial mortgage-backed securities
Investments
Total held-to-maturity securities	0	0
Significant Unobservable Inputs (Level 3) | Commercial mortgage-backed securities | Recurring Basis
Investments
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Bank-issued trust preferred securities | Recurring Basis
Investments
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Equity securities | Recurring Basis
Investments
Total available-for-sale securities	$ 0	$ 0

Fair Value of Financial Instr51

Fair Value of Financial Instruments (Fair Values of Financial Assets and Liabilities on Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Carrying Amount
Financial assets:
Cash and cash equivalents	$ 71,115	$ 61,454
Investment securities	868,830	713,659
Loans	2,057,614	1,607,391
Financial liabilities:
Deposits	2,535,944	1,933,074
Short-term borrowings	160,386	88,277
Long-term borrowings	113,670	179,083
Portion at Fair Value Measurement [Member]
Financial assets:
Cash and cash equivalents	71,115	61,454
Investment securities	868,955	713,633
Loans	2,018,482	1,581,813
Financial liabilities:
Deposits	2,540,131	1,938,021
Short-term borrowings	160,386	88,277
Long-term borrowings	$ 117,299	$ 183,878

Investment Securities Available

Investment Securities Available-for-sale Securities (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities
Amortized Cost	$ 780,304,000	$ 632,967,000
Gross Unrealized Gains	13,196,000	12,693,000
Gross Unrealized Losses	(8,799,000)	(8,780,000)
Fair Value	784,701,000	636,880,000
Securities of a single issuer, other than US Treasury, government agencies and US government sponsored agencies exceeding 10% of Stockholders' Equity	0
U.S. Treasury and government agencies
Schedule of Available-for-sale Securities
Amortized Cost	0	1,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	0	1,000
U.S. government sponsored agencies
Schedule of Available-for-sale Securities
Amortized Cost	2,908,000	5,836,000
Gross Unrealized Gains	58,000	114,000
Gross Unrealized Losses	0	0
Fair Value	2,966,000	5,950,000
States and political subdivisions
Schedule of Available-for-sale Securities
Amortized Cost	111,283,000	62,292,000
Gross Unrealized Gains	3,487,000	2,510,000
Gross Unrealized Losses	(44,000)	(59,000)
Fair Value	114,726,000	64,743,000
Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	635,504,000	529,245,000
Gross Unrealized Gains	4,905,000	5,910,000
Gross Unrealized Losses	(8,116,000)	(7,864,000)
Fair Value	632,293,000	527,291,000
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	23,770,000	28,021,000
Gross Unrealized Gains	119,000	112,000
Gross Unrealized Losses	(44,000)	(286,000)
Fair Value	23,845,000	27,847,000
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
Amortized Cost	5,146,000	6,132,000
Gross Unrealized Gains	0	3,000
Gross Unrealized Losses	(511,000)	(490,000)
Fair Value	4,635,000	5,645,000
Equity securities
Schedule of Available-for-sale Securities
Amortized Cost	1,693,000	1,440,000
Gross Unrealized Gains	4,627,000	4,044,000
Gross Unrealized Losses	(84,000)	(81,000)
Fair Value	$ 6,236,000	$ 5,403,000

Investment Securities Availab53

Investment Securities Available-for-sale gross gains and losses realized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Gross gains and gross losses realized from sales of available-for-sale securities:
Gross gains realized	$ 795	$ 1,136	$ 3,358
Gross losses realized	66	738	2,869
Net gain realized	$ 729	$ 398	$ 489

Investment Securities Availab54

Investment Securities Available-for-sale Securities with Unrealized Losses (Details)	12 Months Ended
	Dec. 31, 2015USD ($)securities	Dec. 31, 2014USD ($)securities
Available-for-sale securities that had an unrealized loss:
Fair value of securities in unrealized loss position less than 12 months	$ 320,460,000	$ 116,660,000
Unrealized loss less than 12 months	$ 4,018,000	$ 1,105,000
Number of securities at an unrealized loss position less than 12 months | securities	90	27
Fair value of securities in unrealized loss more than 12 months	$ 104,915,000	$ 244,021,000
Unrealized loss more than 12 months	$ 4,781,000	$ 7,675,000
Number of securities at an unrealized loss position more than 12 months | securities	38	73
Fair value of securities in unrealized loss	$ 425,375,000	$ 360,681,000
Unrealized loss	8,799,000	8,780,000
Other-than-temporary impairments	$ 0
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 less than 12 months	97.00%
Mortgage-backed securities privately issued
Available-for-sale securities that had an unrealized loss:
Number of securities at an unrealized loss position less than 12 months | securities	3
Securities in unrealized loss position with fair value less than 90% of book value | securities	2
Percentage of mortgage-backed securities in unrealized loss position for less than 12 months	3.00%
Fair value within book value	90.00%
States and political subdivisions
Available-for-sale securities that had an unrealized loss:
Fair value of securities in unrealized loss position less than 12 months	$ 7,662,000	2,602,000
Unrealized loss less than 12 months	$ 38,000	$ 12,000
Number of securities at an unrealized loss position less than 12 months | securities	8	4
Fair value of securities in unrealized loss more than 12 months	$ 213,000	$ 5,788,000
Unrealized loss more than 12 months	$ 6,000	$ 47,000
Number of securities at an unrealized loss position more than 12 months | securities	1	8
Fair value of securities in unrealized loss	$ 7,875,000	$ 8,390,000
Unrealized loss	44,000	59,000
Residential mortgage-backed securities
Available-for-sale securities that had an unrealized loss:
Fair value of securities in unrealized loss position less than 12 months	303,549,000	114,018,000
Unrealized loss less than 12 months	$ 3,902,000	$ 1,091,000
Number of securities at an unrealized loss position less than 12 months | securities	76	21
Fair value of securities in unrealized loss more than 12 months	$ 102,090,000	$ 216,224,000
Unrealized loss more than 12 months	$ 4,214,000	$ 6,773,000
Number of securities at an unrealized loss position more than 12 months | securities	33	57
Fair value of securities in unrealized loss	$ 405,639,000	$ 330,242,000
Unrealized loss	8,116,000	7,864,000
Commercial mortgage-backed securities
Available-for-sale securities that had an unrealized loss:
Fair value of securities in unrealized loss position less than 12 months	6,682,000	0
Unrealized loss less than 12 months	$ 44,000	$ 0
Number of securities at an unrealized loss position less than 12 months | securities	3	0
Fair value of securities in unrealized loss more than 12 months	$ 0	$ 19,404,000
Unrealized loss more than 12 months	$ 0	$ 286,000
Number of securities at an unrealized loss position more than 12 months | securities	0	4
Fair value of securities in unrealized loss	$ 6,682,000	$ 19,404,000
Unrealized loss	44,000	286,000
Bank-issued trust preferred securities
Available-for-sale securities that had an unrealized loss:
Fair value of securities in unrealized loss position less than 12 months	2,129,000	0
Unrealized loss less than 12 months	$ 19,000	$ 0
Number of securities at an unrealized loss position less than 12 months | securities	1	0
Fair value of securities in unrealized loss more than 12 months	$ 2,506,000	$ 2,509,000
Unrealized loss more than 12 months	$ 492,000	$ 490,000
Number of securities at an unrealized loss position more than 12 months | securities	3	3
Fair value of securities in unrealized loss	$ 4,635,000	$ 2,509,000
Unrealized loss	$ 511,000	490,000
Number of available-for-sale securities in unrealized loss position | securities	3
Equity securities
Available-for-sale securities that had an unrealized loss:
Fair value of securities in unrealized loss position less than 12 months	$ 438,000	40,000
Unrealized loss less than 12 months	$ 15,000	$ 2,000
Number of securities at an unrealized loss position less than 12 months | securities	2	2
Fair value of securities in unrealized loss more than 12 months	$ 106,000	$ 96,000
Unrealized loss more than 12 months	$ 69,000	$ 79,000
Number of securities at an unrealized loss position more than 12 months | securities	1	1
Fair value of securities in unrealized loss	$ 544,000	$ 136,000
Unrealized loss	84,000	$ 81,000
Fair Value Less Than 90 Percent of Book Value | Mortgage-backed securities privately issued
Available-for-sale securities that had an unrealized loss:
Fair value of securities in unrealized loss more than 12 months	500,000
Mortgage-backed securities in unrealized loss position for less than 12 months, aggregate book value	$ 700,000

Investment Securities Availab55

Investment Securities Available-for-sale Securities by Maturities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Investments [Abstract]
Statutory tax rate at which other comprehensive income and weighted-average rate of investment securities are calculated	35.00%
Schedule of Available-for-sale Securities
Amortized cost of securities maturing within 1 year	$ 241
Amortized cost of securities maturing in 1-5 years	25,120
Amortized cost of securities maturing in 5-10 years	102,482
Total amortized cost of securities maturing in over 10 years	650,768
Amortized Cost	780,304	$ 632,967
Fair value of securities maturing within 1 year	248
Fair value of securities maturing in 1-5 years	25,241
Fair value of securities maturing in 5-10 years	103,821
Total fair value of securities maturing in over 10 years	649,155
Fair Value	$ 784,701	636,880
Average yield of securities maturing within 1 year	5.35%
Average yield of securities maturing in 1-5 years	2.97%
Average yield of securities maturing in 5-10 years	2.98%
Average yield of securities maturing in over 10 years	2.61%
Total average yield	2.68%
U.S. Treasury and government agencies
Schedule of Available-for-sale Securities
Amortized Cost	$ 0	1
Fair Value	0	1
U.S. government sponsored agencies
Schedule of Available-for-sale Securities
Amortized cost of securities maturing within 1 year	0
Amortized cost of securities maturing in 1-5 years	991
Amortized cost of securities maturing in 5-10 years	0
Amortized cost of securities maturing in over 10 years	1,917
Total amortized cost	2,908
Amortized Cost	2,908	5,836
Fair value of securities maturing within 1 year	0
Fair value of securities maturing in 1-5 years	1,000
Fair value of securities maturing in 5-10 years	0
Fair value of securities maturing in over 10 years	1,966
Total fair value	2,966
Fair Value	2,966	5,950
States and political subdivisions
Schedule of Available-for-sale Securities
Amortized cost of securities maturing within 1 year	240
Amortized cost of securities maturing in 1-5 years	10,649
Amortized cost of securities maturing in 5-10 years	32,475
Amortized cost of securities maturing in over 10 years	67,919
Total amortized cost	111,283
Amortized Cost	111,283	62,292
Fair value of securities maturing within 1 year	247
Fair value of securities maturing in 1-5 years	10,972
Fair value of securities maturing in 5-10 years	33,438
Fair value of securities maturing in over 10 years	70,069
Total fair value	114,726
Fair Value	114,726	64,743
Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized cost of securities maturing within 1 year	1
Amortized cost of securities maturing in 1-5 years	13,480
Amortized cost of securities maturing in 5-10 years	50,013
Amortized cost of securities maturing in over 10 years	572,010
Total amortized cost	635,504
Amortized Cost	635,504	529,245
Fair value of securities maturing within 1 year	1
Fair value of securities maturing in 1-5 years	13,269
Fair value of securities maturing in 5-10 years	50,350
Fair value of securities maturing in over 10 years	568,673
Total fair value	632,293
Fair Value	632,293	527,291
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized cost of securities maturing within 1 year	0
Amortized cost of securities maturing in 1-5 years	0
Amortized cost of securities maturing in 5-10 years	19,994
Amortized cost of securities maturing in over 10 years	3,776
Total amortized cost	23,770
Amortized Cost	23,770	28,021
Fair value of securities maturing within 1 year	0
Fair value of securities maturing in 1-5 years	0
Fair value of securities maturing in 5-10 years	20,033
Fair value of securities maturing in over 10 years	3,812
Total fair value	23,845
Fair Value	23,845	27,847
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
Amortized cost of other securities maturing in over 10 years	5,146
Amortized cost of other securities	5,146
Amortized Cost	5,146	6,132
Fair value of other securities maturing in over 10 years	4,635
Fair value of other securities	4,635
Fair Value	4,635	5,645
Equity securities
Schedule of Available-for-sale Securities
Amortized cost of other securities	1,693
Amortized Cost	1,693	1,440
Fair value of other securities	6,236
Fair Value	$ 6,236	$ 5,403

Investment Securities Held-to-m

Investment Securities Held-to-maturity Securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities
Amortized Cost	$ 45,728,000	$ 48,468,000
Gross Unrealized Gains	757,000	646,000
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	632,000	672,000
Fair Value	45,853,000	48,442,000
Gross realized gains or losses	0	0	$ 0
States and political subdivisions
Schedule of Held-to-maturity Securities
Amortized Cost	3,831,000	3,841,000
Gross Unrealized Gains	394,000	448,000
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	4,000	7,000
Fair Value	4,221,000	4,282,000
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities
Amortized Cost	35,367,000	36,945,000
Gross Unrealized Gains	363,000	189,000
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	534,000	394,000
Fair Value	35,196,000	36,740,000
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities
Amortized Cost	6,530,000	7,682,000
Gross Unrealized Gains	0	9,000
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	94,000	271,000
Fair Value	$ 6,436,000	$ 7,420,000

Investment Securities Held-to57

Investment Securities Held-to-maturity Securities with Unrealized Loss (Details) $ in Thousands	Dec. 31, 2015USD ($)securities	Dec. 31, 2014USD ($)securities
Schedule of Held-to-maturity Securities
Fair value of securities in unrealized loss position less than 12 months	$ 4,246	$ 0
Unrealized loss less than 12 months	$ 93	$ 0
Number of securities at an unrealized loss position less than 12 months | securities	3	0
Fair value of securities in unrealized loss more than 12 months	$ 16,254	$ 24,921
Unrealized loss more than 12 months	$ 539	$ 672
Number of securities at an unrealized loss position more than 12 months | securities	4	7
Total fair value	$ 20,500	$ 24,921
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	632	672
States and political subdivisions
Schedule of Held-to-maturity Securities
Fair value of securities in unrealized loss position less than 12 months	0	0
Unrealized loss less than 12 months	$ 0	$ 0
Number of securities at an unrealized loss position less than 12 months | securities	0	0
Fair value of securities in unrealized loss more than 12 months	$ 319	$ 323
Unrealized loss more than 12 months	$ 4	$ 7
Number of securities at an unrealized loss position more than 12 months | securities	1	1
Total fair value	$ 319	$ 323
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	4	7
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities
Fair value of securities in unrealized loss position less than 12 months	3,706	0
Unrealized loss less than 12 months	$ 89	$ 0
Number of securities at an unrealized loss position less than 12 months | securities	2	0
Fair value of securities in unrealized loss more than 12 months	$ 10,040	$ 18,242
Unrealized loss more than 12 months	$ 445	$ 394
Number of securities at an unrealized loss position more than 12 months | securities	2	5
Total fair value	$ 13,746	$ 18,242
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	534	394
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities
Fair value of securities in unrealized loss position less than 12 months	540	0
Unrealized loss less than 12 months	$ 4	$ 0
Number of securities at an unrealized loss position less than 12 months | securities	1	0
Fair value of securities in unrealized loss more than 12 months	$ 5,895	$ 6,356
Unrealized loss more than 12 months	$ 90	$ 271
Number of securities at an unrealized loss position more than 12 months | securities	1	1
Total fair value	$ 6,435	$ 6,356
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	$ 94	$ 271

Investment Securities Held-to58

Investment Securities Held-to-maturity Securities by Maturities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investments [Abstract]
Federal income tax rate	34.10%	35.00%	35.00%
Schedule of Held-to-maturity Securities
Amortized cost of securities maturing within 1 year	$ 0
Amortized cost of securities maturing in 1-5 years	324
Amortized cost of securities maturing in 5-10 years	1,463
Amortized cost of securities maturing in over 10 years	43,941
Amortized Cost	45,728	$ 48,468
Fair value of securities maturing within 1 year	0
Fair value of securities maturing in 1-5 years	319
Fair value of securities maturing in 5-10 years	1,592
Fair value of securities maturing in over 10 years	43,942
Fair Value	$ 45,853	48,442
Average yield of securities maturing within 1 year	0.00%
Average yield of securities maturing in 1-5 years	3.14%
Average yield of securities maturing in 5-10 years	1.72%
Average yield of securities maturing in over 10 years	2.60%
Total average yield	2.57%
States and political subdivisions
Schedule of Held-to-maturity Securities
Amortized cost of securities maturing within 1 year	$ 0
Amortized cost of securities maturing in 1-5 years	324
Amortized cost of securities maturing in 5-10 years	976
Amortized cost of securities maturing in over 10 years	2,531
Amortized Cost	3,831	3,841
Fair value of securities maturing within 1 year	0
Fair value of securities maturing in 1-5 years	319
Fair value of securities maturing in 5-10 years	1,109
Fair value of securities maturing in over 10 years	2,793
Fair Value	4,221	4,282
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities
Amortized cost of securities maturing within 1 year	0
Amortized cost of securities maturing in 1-5 years	0
Amortized cost of securities maturing in 5-10 years	487
Amortized cost of securities maturing in over 10 years	34,880
Amortized Cost	35,367	36,945
Fair value of securities maturing within 1 year	0
Fair value of securities maturing in 1-5 years	0
Fair value of securities maturing in 5-10 years	483
Fair value of securities maturing in over 10 years	34,713
Fair Value	35,196	36,740
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities
Amortized cost of securities maturing within 1 year	0
Amortized cost of securities maturing in 1-5 years	0
Amortized cost of securities maturing in 5-10 years	0
Amortized cost of securities maturing in over 10 years	6,530
Amortized Cost	6,530	7,682
Fair value of securities maturing within 1 year	0
Fair value of securities maturing in 1-5 years	0
Fair value of securities maturing in 5-10 years	0
Fair value of securities maturing in over 10 years	6,436
Fair Value	$ 6,436	$ 7,420

Investment Securities Pledged S

Investment Securities Pledged Securities (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Investments [Abstract]
Carrying value of available-for-sale securities pledged to secure public and trust department deposits and repurchase agreements	$ 495.5	$ 352.8
Carrying value of held-to-maturity securities pledged to secure public and trust department deposits and repurchase agreements	21.4	22.9
Carrying value of available-for-sale securities pledged to secure additional borrowing capacity at FHLB and FRB	11.1	13.5
Carrying value of held-to-maturity securities pledged to secure additional borrowing capacity at FHLB and FRB	$ 23.3	$ 24.5

Loans (Narrative) (Details)

Loans (Narrative) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Loans
Additional commitments to lend funds to debtors whose terms have been modified in a TDR	$ 0
Residential real estate
Loans
Pledged commercial and residential loans to secure borrowings from FHLB and FRB	554,800,000	$ 457,100,000
Commerical Loans
Loans
Pledged commercial and residential loans to secure borrowings from FHLB and FRB	$ 195,500,000	$ 150,700,000

Loans Loan Balances By Classifi

Loans Loan Balances By Classification (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Loans
Balance	$ 2,072,440	$ 1,620,898
Loan Type
Loans
Balance	2,072,440	1,620,898
Originated Loan | Loan Type
Loans
Balance	1,414,639	1,212,014
Originated Loan | Commercial real estate, construction
Loans
Balance	63,785	37,901
Originated Loan | Commercial real estate
Loans
Balance	534,969	472,561
Originated Loan | Commercial and industrial
Loans
Balance	288,130	249,975
Originated Loan | Residential real estate
Loans
Balance	288,783	254,169
Originated Loan | Home equity lines of credit
Loans
Balance	74,176	62,463
Originated Loan | Consumer
Loans
Balance	227,133	169,913
Originated Loan | Deposit account overdrafts
Loans
Balance	1,448	2,933
Acquired Loans | Loan Type
Loans
Balance	657,801	408,884
Acquired Loans | Commercial real estate, construction
Loans
Balance	12,114	1,051
Acquired Loans | Commercial real estate
Loans
Balance	277,206	122,526
Acquired Loans | Commercial and industrial
Loans
Balance	63,589	30,056
Acquired Loans | Residential real estate
Loans
Balance	276,772	225,274
Acquired Loans | Home equity lines of credit
Loans
Balance	32,253	18,232
Acquired Loans | Consumer
Loans
Balance	7,981	12,796
Acquired Loans | Deposit account overdrafts
Loans
Balance	$ 0	$ 0

Loans Purchased credit impaired

Loans Purchased credit impaired loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Purchased credit impaired loans
Carrying Amount	$ 35,064	$ 19,067
Loan Type
Purchased credit impaired loans
Outstanding Balance	47,281	24,292
Commercial real estate, other
Purchased credit impaired loans
Outstanding Balance	16,893	7,762
Commercial and industrial
Purchased credit impaired loans
Outstanding Balance	3,040	1,041
Residential real estate
Purchased credit impaired loans
Outstanding Balance	27,155	15,183
Consumer
Purchased credit impaired loans
Outstanding Balance	$ 193	$ 306

Loans Accretable Yield Rollforw

Loans Accretable Yield Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Loans
Accretable Yield	$ 7,042	$ 3,172
Reclassification from nonaccretable to accretable	2,093
Accretion	(1,834)
NB&T Financial Group, Inc. [Member]
Loans
Accretable Yield	$ 3,611

Loans Related Party Loans (Deta

Loans Related Party Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Loans
Loans and Leases Receivable, Related Parties	$ 15,192
Loans and Leases Receivable, Related Parties, Additions	10,361
Proceeds from (Repayments of) Related Party Debt	(6,915)
Other related party changes	(538)
Loans and Leases Receivable, Related Parties	$ 18,100

Loans Nonaccrual and Past Due L

Loans Nonaccrual and Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Loans
Nonaccrual Loans	$ 13,531	$ 8,406
Accruing Loans 90 Days Past Due	5,969	2,799
Originated Loan
Loans
Nonaccrual Loans	11,912	7,270
Accruing Loans 90 Days Past Due	850	840
Originated Loan | Commercial real estate, construction
Loans
Nonaccrual Loans	921	0
Accruing Loans 90 Days Past Due	0	0
Originated Loan | Commercial real estate, other
Loans
Nonaccrual Loans	7,041	2,575
Accruing Loans 90 Days Past Due	0	0
Originated Loan | Commercial real estate
Loans
Nonaccrual Loans	7,962	2,575
Accruing Loans 90 Days Past Due	0	0
Originated Loan | Commercial and industrial
Loans
Nonaccrual Loans	480	1,286
Accruing Loans 90 Days Past Due	680	0
Originated Loan | Residential real estate
Loans
Nonaccrual Loans	3,057	3,049
Accruing Loans 90 Days Past Due	169	818
Originated Loan | Home equity lines of credit
Loans
Nonaccrual Loans	321	341
Accruing Loans 90 Days Past Due	0	20
Originated Loan | Consumer
Loans
Nonaccrual Loans	92	19
Accruing Loans 90 Days Past Due	1	2
Acquired Loans
Loans
Nonaccrual Loans	1,619	1,136
Accruing Loans 90 Days Past Due	5,119	1,959
Acquired Loans | Commercial real estate, construction
Loans
Nonaccrual Loans	0	96
Accruing Loans 90 Days Past Due	0	0
Acquired Loans | Commercial real estate, other
Loans
Nonaccrual Loans	469	9
Accruing Loans 90 Days Past Due	2,425	567
Acquired Loans | Commercial real estate
Loans
Nonaccrual Loans	469	105
Accruing Loans 90 Days Past Due	2,425	567
Acquired Loans | Commercial and industrial
Loans
Nonaccrual Loans	247	708
Accruing Loans 90 Days Past Due	1,306	301
Acquired Loans | Residential real estate
Loans
Nonaccrual Loans	798	304
Accruing Loans 90 Days Past Due	1,353	1,083
Acquired Loans | Home equity lines of credit
Loans
Nonaccrual Loans	98	19
Accruing Loans 90 Days Past Due	35	0
Acquired Loans | Consumer
Loans
Nonaccrual Loans	7	0
Accruing Loans 90 Days Past Due	$ 0	$ 8

Loans Aging Of The Recorded Inv

Loans Aging Of The Recorded Investment In Past Due Loans And Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Loans
Loans, net of deferred fees and costs	$ 2,072,440	$ 1,620,898
Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	36,035	22,658
Current Loans	2,036,405	1,598,240
Loans, net of deferred fees and costs	2,072,440	1,620,898
Originated Loan | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	19,670	13,074
Current Loans	1,394,969	1,198,940
Loans, net of deferred fees and costs	1,414,639	1,212,014
Originated Loan | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	921	0
Current Loans	62,864	37,901
Loans, net of deferred fees and costs	63,785	37,901
Originated Loan | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	8,897	2,070
Current Loans	462,287	432,590
Loans, net of deferred fees and costs	471,184	434,660
Originated Loan | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	9,818	2,070
Current Loans	525,151	470,491
Loans, net of deferred fees and costs	534,969	472,561
Originated Loan | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	2,419	1,280
Current Loans	285,711	248,695
Loans, net of deferred fees and costs	288,130	249,975
Originated Loan | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	5,492	7,466
Current Loans	283,291	246,703
Loans, net of deferred fees and costs	288,783	254,169
Originated Loan | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	272	898
Current Loans	73,904	61,565
Loans, net of deferred fees and costs	74,176	62,463
Originated Loan | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	1,669	1,295
Current Loans	225,464	168,618
Loans, net of deferred fees and costs	227,133	169,913
Originated Loan | Deposit account overdrafts
Loans
Financing Receivable, Recorded Investment, Past Due	0	65
Current Loans	1,448	2,868
Loans, net of deferred fees and costs	1,448	2,933
Acquired Loans | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	16,365	9,584
Current Loans	641,436	399,300
Loans, net of deferred fees and costs	657,801	408,884
Acquired Loans | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	40	96
Current Loans	12,074	955
Loans, net of deferred fees and costs	12,114	1,051
Acquired Loans | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	4,674	1,777
Current Loans	260,418	119,698
Loans, net of deferred fees and costs	265,092	121,475
Acquired Loans | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	4,714	1,873
Current Loans	272,492	120,653
Loans, net of deferred fees and costs	277,206	122,526
Acquired Loans | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	1,962	867
Current Loans	61,627	29,189
Loans, net of deferred fees and costs	63,589	30,056
Acquired Loans | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	9,135	6,536
Current Loans	267,637	218,738
Loans, net of deferred fees and costs	276,772	225,274
Acquired Loans | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	433	28
Current Loans	31,820	18,204
Loans, net of deferred fees and costs	32,253	18,232
Acquired Loans | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	121	280
Current Loans	7,860	12,516
Loans, net of deferred fees and costs	7,981	12,796
Acquired Loans | Deposit account overdrafts
Loans
Financing Receivable, Recorded Investment, Past Due	0	0
Current Loans	0	0
Loans, net of deferred fees and costs	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	21,369	12,022
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	14,282	6,629
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	913	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	7,260	565
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	8,173	565
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	1,437	17
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	3,124	4,502
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	161	344
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	1,387	1,136
Financing Receivables, 30 to 59 Days Past Due [Member] | Originated Loan | Deposit account overdrafts
Loans
Financing Receivable, Recorded Investment, Past Due	0	65
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	7,087	5,393
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	1,592	1,067
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	1,592	1,067
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	177	46
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	4,910	4,026
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	318	9
Financing Receivables, 30 to 59 Days Past Due [Member] | Acquired Loans | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	90	245
Financing Receivables, 60 to 89 Days Past Due [Member] | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	5,950	3,473
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	2,835	1,947
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	1,258	285
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	1,258	285
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	215	18
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	1,105	1,062
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	7	425
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	250	157
Financing Receivables, 60 to 89 Days Past Due [Member] | Originated Loan | Deposit account overdrafts
Loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	3,115	1,526
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	352	143
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	352	143
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	232	6
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	2,480	1,331
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	20	19
Financing Receivables, 60 to 89 Days Past Due [Member] | Acquired Loans | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	31	27
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	8,716	7,163
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	2,553	4,498
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	8	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	379	1,220
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	387	1,220
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	767	1,245
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	1,263	1,902
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	104	129
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	32	2
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Originated Loan | Deposit account overdrafts
Loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Loan Type
Loans
Financing Receivable, Recorded Investment, Past Due	6,163	2,665
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Commercial real estate, construction
Loans
Financing Receivable, Recorded Investment, Past Due	40	96
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Commercial real estate, other
Loans
Financing Receivable, Recorded Investment, Past Due	2,730	567
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Commercial real estate
Loans
Financing Receivable, Recorded Investment, Past Due	2,770	663
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Commercial and industrial
Loans
Financing Receivable, Recorded Investment, Past Due	1,553	815
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Residential real estate
Loans
Financing Receivable, Recorded Investment, Past Due	1,745	1,179
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Home equity lines of credit
Loans
Financing Receivable, Recorded Investment, Past Due	95	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Acquired Loans | Consumer
Loans
Financing Receivable, Recorded Investment, Past Due	$ 0	$ 8

Loans Loans By Risk Category (D

Loans Loans By Risk Category (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Loans
Total Loans	$ 2,055,661	$ 1,603,017
Balance	2,072,440	1,620,898
Loan Type
Loans
Balance	2,072,440	1,620,898
Pass Rated | Loan Type
Loans
Balance	1,099,592	852,370
Watch | Loan Type
Loans
Balance	61,832	29,822
Substandard | Loan Type
Loans
Balance	59,857	44,472
Doubtful | Loan Type
Loans
Balance	458	251
Not Rated | Loan Type
Loans
Balance	850,701	693,983
Originated Loan | Loan Type
Loans
Balance	1,414,639	1,212,014
Originated Loan | Commercial real estate, construction
Loans
Balance	63,785	37,901
Originated Loan | Commercial real estate, other
Loans
Balance	471,184	434,660
Originated Loan | Commercial real estate
Loans
Balance	534,969	472,561
Originated Loan | Commercial and industrial
Loans
Balance	288,130	249,975
Originated Loan | Residential real estate
Loans
Balance	288,783	254,169
Originated Loan | Home equity lines of credit
Loans
Balance	74,176	62,463
Originated Loan | Consumer
Loans
Balance	227,133	169,913
Originated Loan | Deposit account overdrafts
Loans
Balance	1,448	2,933
Originated Loan | Pass Rated | Loan Type
Loans
Balance	779,172	704,152
Originated Loan | Pass Rated | Commercial real estate, construction
Loans
Balance	62,225	37,637
Originated Loan | Pass Rated | Commercial real estate, other
Loans
Balance	434,868	405,224
Originated Loan | Pass Rated | Commercial real estate
Loans
Balance	497,093	442,861
Originated Loan | Pass Rated | Commercial and industrial
Loans
Balance	259,183	239,168
Originated Loan | Pass Rated | Residential real estate
Loans
Balance	21,903	21,296
Originated Loan | Pass Rated | Home equity lines of credit
Loans
Balance	785	767
Originated Loan | Pass Rated | Consumer
Loans
Balance	208	60
Originated Loan | Pass Rated | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Watch | Loan Type
Loans
Balance	43,479	21,634
Originated Loan | Watch | Commercial real estate, construction
Loans
Balance	0	0
Originated Loan | Watch | Commercial real estate, other
Loans
Balance	18,710	12,316
Originated Loan | Watch | Commercial real estate
Loans
Balance	18,710	12,316
Originated Loan | Watch | Commercial and industrial
Loans
Balance	23,601	8,122
Originated Loan | Watch | Residential real estate
Loans
Balance	1,168	1,195
Originated Loan | Watch | Home equity lines of credit
Loans
Balance	0	0
Originated Loan | Watch | Consumer
Loans
Balance	0	1
Originated Loan | Watch | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Substandard | Loan Type
Loans
Balance	36,312	32,378
Originated Loan | Substandard | Commercial real estate, construction
Loans
Balance	913	0
Originated Loan | Substandard | Commercial real estate, other
Loans
Balance	17,595	17,120
Originated Loan | Substandard | Commercial real estate
Loans
Balance	18,508	17,120
Originated Loan | Substandard | Commercial and industrial
Loans
Balance	5,344	2,684
Originated Loan | Substandard | Residential real estate
Loans
Balance	12,282	11,601
Originated Loan | Substandard | Home equity lines of credit
Loans
Balance	175	965
Originated Loan | Substandard | Consumer
Loans
Balance	3	8
Originated Loan | Substandard | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Doubtful | Loan Type
Loans
Balance	187	57
Originated Loan | Doubtful | Commercial real estate, construction
Loans
Balance	0	0
Originated Loan | Doubtful | Commercial real estate, other
Loans
Balance	0	0
Originated Loan | Doubtful | Commercial real estate
Loans
Balance	0	0
Originated Loan | Doubtful | Commercial and industrial
Loans
Balance	0	1
Originated Loan | Doubtful | Residential real estate
Loans
Balance	187	56
Originated Loan | Doubtful | Home equity lines of credit
Loans
Balance	0	0
Originated Loan | Doubtful | Consumer
Loans
Balance	0	0
Originated Loan | Doubtful | Deposit account overdrafts
Loans
Balance	0	0
Originated Loan | Not Rated | Loan Type
Loans
Balance	555,489	453,793
Originated Loan | Not Rated | Commercial real estate, construction
Loans
Balance	647	264
Originated Loan | Not Rated | Commercial real estate, other
Loans
Balance	11	0
Originated Loan | Not Rated | Commercial real estate
Loans
Balance	658	264
Originated Loan | Not Rated | Commercial and industrial
Loans
Balance	2	0
Originated Loan | Not Rated | Residential real estate
Loans
Balance	253,243	220,021
Originated Loan | Not Rated | Home equity lines of credit
Loans
Balance	73,216	60,731
Originated Loan | Not Rated | Consumer
Loans
Balance	226,922	169,844
Originated Loan | Not Rated | Deposit account overdrafts
Loans
Balance	1,448	2,933
Acquired Loans | Loan Type
Loans
Balance	657,801	408,884
Acquired Loans | Commercial real estate, construction
Loans
Balance	12,114	1,051
Acquired Loans | Commercial real estate, other
Loans
Balance	265,092	121,475
Acquired Loans | Commercial real estate
Loans
Balance	277,206	122,526
Acquired Loans | Commercial and industrial
Loans
Balance	63,589	30,056
Acquired Loans | Residential real estate
Loans
Balance	276,772	225,274
Acquired Loans | Home equity lines of credit
Loans
Balance	32,253	18,232
Acquired Loans | Consumer
Loans
Balance	7,981	12,796
Acquired Loans | Deposit account overdrafts
Loans
Balance	0	0
Acquired Loans | Pass Rated | Loan Type
Loans
Balance	320,420	148,218
Acquired Loans | Pass Rated | Commercial real estate, construction
Loans
Balance	12,114	955
Acquired Loans | Pass Rated | Commercial real estate, other
Loans
Balance	233,630	106,115
Acquired Loans | Pass Rated | Commercial real estate
Loans
Balance	245,744	107,070
Acquired Loans | Pass Rated | Commercial and industrial
Loans
Balance	56,077	27,313
Acquired Loans | Pass Rated | Residential real estate
Loans
Balance	18,027	13,458
Acquired Loans | Pass Rated | Home equity lines of credit
Loans
Balance	316	98
Acquired Loans | Pass Rated | Consumer
Loans
Balance	256	279
Acquired Loans | Pass Rated | Deposit account overdrafts
Loans
Balance	0	0
Acquired Loans | Watch | Loan Type
Loans
Balance	18,353	8,188
Acquired Loans | Watch | Commercial real estate, construction
Loans
Balance	0	0
Acquired Loans | Watch | Commercial real estate, other
Loans
Balance	13,866	7,100
Acquired Loans | Watch | Commercial real estate
Loans
Balance	13,866	7,100
Acquired Loans | Watch | Commercial and industrial
Loans
Balance	3,078	255
Acquired Loans | Watch | Residential real estate
Loans
Balance	1,409	833
Acquired Loans | Watch | Home equity lines of credit
Loans
Balance	0	0
Acquired Loans | Watch | Consumer
Loans
Balance	0	0
Acquired Loans | Watch | Deposit account overdrafts
Loans
Balance	0	0
Acquired Loans | Substandard | Loan Type
Loans
Balance	23,545	12,094
Acquired Loans | Substandard | Commercial real estate, construction
Loans
Balance	0	0
Acquired Loans | Substandard | Commercial real estate, other
Loans
Balance	17,521	8,260
Acquired Loans | Substandard | Commercial real estate
Loans
Balance	17,521	8,260
Acquired Loans | Substandard | Commercial and industrial
Loans
Balance	4,238	2,294
Acquired Loans | Substandard | Residential real estate
Loans
Balance	1,786	1,540
Acquired Loans | Substandard | Home equity lines of credit
Loans
Balance	0	0
Acquired Loans | Substandard | Consumer
Loans
Balance	0	0
Acquired Loans | Substandard | Deposit account overdrafts
Loans
Balance	0	0
Acquired Loans | Doubtful | Loan Type
Loans
Balance	271	194
Acquired Loans | Doubtful | Commercial real estate, construction
Loans
Balance	0	0
Acquired Loans | Doubtful | Commercial real estate, other
Loans
Balance	75	0
Acquired Loans | Doubtful | Commercial real estate
Loans
Balance	75	0
Acquired Loans | Doubtful | Commercial and industrial
Loans
Balance	196	194
Acquired Loans | Doubtful | Residential real estate
Loans
Balance	0	0
Acquired Loans | Doubtful | Home equity lines of credit
Loans
Balance	0	0
Acquired Loans | Doubtful | Consumer
Loans
Balance	0	0
Acquired Loans | Doubtful | Deposit account overdrafts
Loans
Balance	0	0
Acquired Loans | Not Rated | Loan Type
Loans
Balance	295,212	240,190
Acquired Loans | Not Rated | Commercial real estate, construction
Loans
Balance	0	96
Acquired Loans | Not Rated | Commercial real estate, other
Loans
Balance	0	0
Acquired Loans | Not Rated | Commercial real estate
Loans
Balance	0	96
Acquired Loans | Not Rated | Commercial and industrial
Loans
Balance	0	0
Acquired Loans | Not Rated | Residential real estate
Loans
Balance	255,550	209,443
Acquired Loans | Not Rated | Home equity lines of credit
Loans
Balance	31,937	18,134
Acquired Loans | Not Rated | Consumer
Loans
Balance	7,725	12,517
Acquired Loans | Not Rated | Deposit account overdrafts
Loans
Balance	$ 0	$ 0

Loans Schedule Of Impaired Loan

Loans Schedule Of Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Loan Type
Impaired Loans
Unpaid Principal Balance	$ 62,169	$ 30,109
Recorded Investment With Allowance	7,990	2,651
Recorded Investment Without Allowance	47,413	26,674
Total Recorded Investment	55,403	29,325
Related Allowance	1,820	1,014
Average Recorded Investment	44,752	13,949
Interest Income Recognized	2,464	1,175
Commercial real estate, other
Impaired Loans
Unpaid Principal Balance	23,430	8,668
Recorded Investment With Allowance	6,396	653
Recorded Investment Without Allowance	12,775	7,742
Total Recorded Investment	19,171	8,395
Related Allowance	1,363	189
Average Recorded Investment	13,071	4,056
Interest Income Recognized	815	248
Commercial real estate, construction
Impaired Loans
Unpaid Principal Balance	957	9,914
Recorded Investment With Allowance	0	0
Recorded Investment Without Allowance	957	9,909
Total Recorded Investment	957	9,909
Related Allowance	0	0
Average Recorded Investment	227	4,378
Interest Income Recognized	3	540
Commercial real estate
Impaired Loans
Unpaid Principal Balance	24,387	18,582
Recorded Investment With Allowance	6,396	653
Recorded Investment Without Allowance	13,732	17,651
Total Recorded Investment	20,128	18,304
Related Allowance	1,363	189
Average Recorded Investment	13,298	8,434
Interest Income Recognized	818	788
Commercial and industrial
Impaired Loans
Unpaid Principal Balance	5,670	3,747
Recorded Investment With Allowance	1,224	1,945
Recorded Investment Without Allowance	4,130	1,767
Total Recorded Investment	5,354	3,712
Related Allowance	351	816
Average Recorded Investment	4,049	1,414
Interest Income Recognized	246	73
Residential real estate
Impaired Loans
Unpaid Principal Balance	31,304	6,889
Recorded Investment With Allowance	370	53
Recorded Investment Without Allowance	28,834	6,372
Total Recorded Investment	29,204	6,425
Related Allowance	106	9
Average Recorded Investment	26,785	3,582
Interest Income Recognized	1,354	272
Home equity lines of credit
Impaired Loans
Unpaid Principal Balance	425	500
Recorded Investment With Allowance	0	0
Recorded Investment Without Allowance	419	498
Total Recorded Investment	419	498
Related Allowance	0	0
Average Recorded Investment	325	298
Interest Income Recognized	18	18
Consumer
Impaired Loans
Unpaid Principal Balance	383	391
Recorded Investment With Allowance	0	0
Recorded Investment Without Allowance	298	386
Total Recorded Investment	298	386
Related Allowance	0	0
Average Recorded Investment	295	221
Interest Income Recognized	$ 28	$ 24

Loans Troubled Debt Restructuri

Loans Troubled Debt Restructurings (Details)	12 Months Ended
	Dec. 31, 2015USD ($)contract	Dec. 31, 2014USD ($)contract
Financing Receivable, Modifications [Line Items]
Additional commitments to lend funds to debtors whose terms have been modified in a TDR	$ 0
Originated Loan
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	36	44
Pre-modification recorded investment in loans modified as TDR	$ 2,438,000	$ 1,342,000
Post-modification recorded investment in loans modified as TDR	2,438,000	1,343,000
Total Recorded Investment	$ 2,313,000	$ 1,301,000
Number of contracts modified as a TDR that subsequently defaulted | contract	1	3
Recorded investment in loans modified as a TDR that subsequently defaulted	$ 151,000	$ 61,000
Impact on allowance for loan losses for loans modified as a TDR that subsequently defaulted	0	0
Originated Loan | Commercial real estate, other
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	5
Pre-modification recorded investment in loans modified as TDR	$ 900,000
Post-modification recorded investment in loans modified as TDR	900,000
Total Recorded Investment	$ 881,000
Originated Loan | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	4
Pre-modification recorded investment in loans modified as TDR	$ 834,000
Post-modification recorded investment in loans modified as TDR	834,000
Total Recorded Investment	$ 834,000
Originated Loan | Residential real estate
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	4	22
Pre-modification recorded investment in loans modified as TDR	$ 207,000	$ 996,000
Post-modification recorded investment in loans modified as TDR	207,000	997,000
Total Recorded Investment	$ 115,000	$ 967,000
Number of contracts modified as a TDR that subsequently defaulted | contract	1	1
Recorded investment in loans modified as a TDR that subsequently defaulted	$ 151,000	$ 33,000
Impact on allowance for loan losses for loans modified as a TDR that subsequently defaulted	0	0
Originated Loan | Home equity lines of credit
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	11	12
Pre-modification recorded investment in loans modified as TDR	$ 402,000	$ 238,000
Post-modification recorded investment in loans modified as TDR	402,000	238,000
Total Recorded Investment	$ 389,000	$ 232,000
Number of contracts modified as a TDR that subsequently defaulted | contract	0	2
Recorded investment in loans modified as a TDR that subsequently defaulted	$ 0	$ 28,000
Impact on allowance for loan losses for loans modified as a TDR that subsequently defaulted	0	0
Originated Loan | Consumer
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	12	10
Pre-modification recorded investment in loans modified as TDR	$ 95,000	$ 108,000
Post-modification recorded investment in loans modified as TDR	95,000	108,000
Total Recorded Investment	$ 94,000	$ 102,000
Acquired Loans
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	5	13
Pre-modification recorded investment in loans modified as TDR	$ 254,000	$ 945,000
Post-modification recorded investment in loans modified as TDR	254,000	945,000
Total Recorded Investment	$ 253,000	$ 930,000
Number of contracts modified as a TDR that subsequently defaulted | contract	0	1
Recorded investment in loans modified as a TDR that subsequently defaulted	$ 0	$ 56,000
Impact on allowance for loan losses for loans modified as a TDR that subsequently defaulted	0	0
Acquired Loans | Commercial real estate, construction
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract		1
Pre-modification recorded investment in loans modified as TDR		$ 96,000
Post-modification recorded investment in loans modified as TDR		96,000
Total Recorded Investment		$ 96,000
Acquired Loans | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract		3
Pre-modification recorded investment in loans modified as TDR		$ 605,000
Post-modification recorded investment in loans modified as TDR		605,000
Total Recorded Investment		$ 594,000
Acquired Loans | Residential real estate
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	4	4
Pre-modification recorded investment in loans modified as TDR	$ 246,000	$ 235,000
Post-modification recorded investment in loans modified as TDR	246,000	235,000
Total Recorded Investment	$ 246,000	$ 234,000
Number of contracts modified as a TDR that subsequently defaulted | contract	0	1
Recorded investment in loans modified as a TDR that subsequently defaulted	$ 0	$ 56,000
Impact on allowance for loan losses for loans modified as a TDR that subsequently defaulted	0	0
Acquired Loans | Home equity lines of credit
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract	1
Pre-modification recorded investment in loans modified as TDR	$ 8,000
Post-modification recorded investment in loans modified as TDR	8,000
Total Recorded Investment	$ 7,000
Acquired Loans | Consumer
Financing Receivable, Modifications [Line Items]
Number of contracts modified as a TDR | contract		5
Pre-modification recorded investment in loans modified as TDR		$ 9,000
Post-modification recorded investment in loans modified as TDR		9,000
Total Recorded Investment		$ 6,000

Loans Allowance For Loan Losses

Loans Allowance For Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Provision for (recovery of) loan losses	$ 14,097	$ 339	$ (4,410)
Loan Type
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	17,881	17,065
Charge-offs	(16,698)	(2,715)
Recoveries	1,562	3,192
Net (charge-offs) recoveries	(15,136)	477
Provision for (recovery of) loan losses	13,794	339
Ending balance	17,881	17,065		$ 16,539	$ 17,881
Period-end amount allocated to:
Loans individually evaluated for impairment				1,820	1,014
Loans collectively evaluated for impairment				14,719	16,867
Ending balance	17,881	17,065		16,539	17,881
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	4,036	2,174
Charge-offs	(13,576)	(199)
Recoveries	98	77
Net (charge-offs) recoveries	(13,478)	(122)
Provision for (recovery of) loan losses	14,824	1,984
Ending balance	4,036	2,174		5,382	4,036
Period-end amount allocated to:
Loans individually evaluated for impairment				351	816
Loans collectively evaluated for impairment				5,031	3,220
Ending balance	4,036	2,174		5,382	4,036
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	1,627	881
Charge-offs	(628)	(478)
Recoveries	315	169
Net (charge-offs) recoveries	(313)	(309)
Provision for (recovery of) loan losses	(57)	1,055
Ending balance	1,627	881		1,257	1,627
Period-end amount allocated to:
Loans individually evaluated for impairment				106	9
Loans collectively evaluated for impairment				1,151	1,618
Ending balance	1,627	881		1,257	1,627
Home equity lines of credit
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	694	343
Charge-offs	(125)	(128)
Recoveries	119	36
Net (charge-offs) recoveries	(6)	(92)
Provision for (recovery of) loan losses	44	443
Ending balance	694	343		732	694
Period-end amount allocated to:
Loans individually evaluated for impairment				0	0
Loans collectively evaluated for impairment				732	694
Ending balance	694	343		732	694
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	1,587	316
Charge-offs	(1,353)	(1,191)
Recoveries	755	697
Net (charge-offs) recoveries	(598)	(494)
Provision for (recovery of) loan losses	982	1,765
Ending balance	1,587	316		1,971	1,587
Period-end amount allocated to:
Loans individually evaluated for impairment				0	0
Loans collectively evaluated for impairment				1,971	1,587
Ending balance	1,587	316		1,971	1,587
Deposit account overdrafts
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	112	136
Charge-offs	(774)	(516)
Recoveries	171	153
Net (charge-offs) recoveries	(603)	(363)
Provision for (recovery of) loan losses	612	339
Ending balance	112	136		121	112
Period-end amount allocated to:
Loans individually evaluated for impairment				0	0
Loans collectively evaluated for impairment				121	112
Ending balance	112	136		121	112
Commercial real estate, other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	9,825	13,215
Charge-offs	(242)	(203)
Recoveries	104	2,060
Net (charge-offs) recoveries	(138)	1,857
Provision for (recovery of) loan losses	(2,611)	(5,247)
Ending balance	9,825	13,215		7,076	9,825
Period-end amount allocated to:
Loans individually evaluated for impairment				1,363	189
Loans collectively evaluated for impairment				5,713	9,636
Ending balance	9,825	13,215		7,076	9,825
Acquired Purchased Credit Impaired Loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, January 1, 2013	0	0	0
Charge-offs	(63)	0	0
Recoveries	0	0	0
Net (charge-offs) recoveries	(63)	0	0
Ending balance	0	0	0	240	0
Period-end amount allocated to:
Ending balance	0	0	0	$ 240	$ 0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	$ 303	$ 0	$ 0

Bank Premises and Equipment Dep

Bank Premises and Equipment Depreciation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Bank Premises and Equipment
Depreciation expense	$ 4.6	$ 3	$ 2.6
Building and premises | Minimum
Bank Premises and Equipment
Building and premises and furniture, fixtures and equipment	5
Building and premises | Maximum
Bank Premises and Equipment
Building and premises and furniture, fixtures and equipment	40
Furniture, fixtures and equipment | Minimum
Bank Premises and Equipment
Building and premises and furniture, fixtures and equipment	2
Furniture, fixtures and equipment | Maximum
Bank Premises and Equipment
Building and premises and furniture, fixtures and equipment	10

Bank Premises and Equipment Lea

Bank Premises and Equipment Leases (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Future Lease Payments
Rent Expense	$ 988,000	$ 951,000	$ 950,000
Related Party Lease Payments
Future Lease Payments
Rent Expense		$ 64,000	$ 151,000

Bank Premises and Equipment Net

Bank Premises and Equipment Net Book Value (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Bank Premises and Equipment
Total bank premises and equipment	$ 96,070	$ 78,337
Accumulated depreciation	(42,583)	(38,002)
Bank premises and equipment, net	53,487	40,335
Land
Bank Premises and Equipment
Total bank premises and equipment	11,976	7,612
Building and premises
Bank Premises and Equipment
Total bank premises and equipment	58,607	48,402
Furniture, fixtures and equipment
Bank Premises and Equipment
Total bank premises and equipment	$ 25,487	$ 22,323

Bank Premises and Equipment Fut

Bank Premises and Equipment Future Lease Payments (Details) $ in Thousands	Dec. 31, 2015USD ($)
Property, Plant and Equipment [Abstract]
2,015	$ 916
2,016	612
2,017	486
2,018	224
2,019	58
Thereafter	272
Total future operating lease payments	$ 2,568

Goodwill and Other Intangible75

Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets [Abstract]
Goodwill, Impairment Loss	$ 0
Goodwill
Goodwill, beginning of year	98,562,000	$ 70,520,000
Acquired goodwill	34,069,000	28,042,000
Goodwill, end of year	$ 132,631,000	$ 98,562,000

Goodwill and Other Intangible76

Goodwill and Other Intangible Assets (Other Intangibles) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2010
Other Intangible Assets
Gross intangibles	$ 15,871	$ 10,872
Acquired intangibles	10,318	4,999
Accumulated amortization	(11,590)	(7,513)
Total acquired intangibles	14,599	8,358
Other intangible assets	16,986	10,596
Core Deposits
Other Intangible Assets
Gross intangibles	7,013	2,226
Acquired intangibles	8,623	4,787
Accumulated amortization	(4,396)	(1,156)
Total acquired intangibles	11,240	5,857
Customer Relationships
Other Intangible Assets
Gross intangibles	8,858	8,646
Acquired intangibles	1,695	212
Accumulated amortization	(7,194)	(6,357)
Total acquired intangibles	3,359	2,501
Servicing rights
Other Intangible Assets
Total acquired intangibles	2,387	2,238	$ 2,295	$ 2,073
Other intangible assets	$ 2,387	$ 2,238

Goodwill and Other Intangible77

Goodwill and Other Intangible Assets (Estimated Aggregated Future Amortization Expense) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2010
Other Intangible Assets
2,015	$ 3,947
2,016	3,330
2,017	2,704
2,018	2,068
2,019	1,423
Thereafter	1,127
Total acquired intangibles	14,599	$ 8,358
Core Deposits
Other Intangible Assets
2,015	3,114
2,016	2,608
2,017	2,098
2,018	1,586
2,019	1,071
Thereafter	763
Total acquired intangibles	11,240	5,857
Customer Relationships
Other Intangible Assets
2,015	833
2,016	722
2,017	606
2,018	482
2,019	352
Thereafter	364
Total acquired intangibles	3,359	2,501
Servicing rights
Other Intangible Assets
Total acquired intangibles	$ 2,387	$ 2,238	$ 2,295	$ 2,073

Goodwill and Other Intangible78

Goodwill and Other Intangible Assets (Mortgage Servicing Rights Activity) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Intangible Assets
Balance, beginning of year	$ 8,358,000
Balance, beginning of year	14,599,000	$ 8,358,000
Valuation allowance for servicing rights	0
Servicing rights
Other Intangible Assets
Balance, beginning of year	2,238,000	2,295,000
Amortization	662,000	597,000	$ 652,000
Servicing rights originated	566,000	497,000	675,000
Servicing rights acquired	245,000	43,000	199,000
Balance, beginning of year	$ 2,387,000	$ 2,238,000	$ 2,295,000

Deposits (Deposits) (Details)

Deposits (Deposits) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deposit Type
Total	$ 482,849
Interest-bearing transaction accounts	414,375	$ 295,307
Money market deposit accounts	394,119	337,387
Governmental deposit accounts	276,639	161,305
Interest-bearing transaction accounts	250,023	173,659
Total interest-bearing deposits	1,818,005	1,439,912
Non-interest-bearing	717,939	493,162
Total deposits	2,535,944	1,933,074
Related Party Deposits	43,000	34,000
Brokered CD's
Deposit Type
Total	33,857	39,691
Retail CD's
Deposit Type
Retail CD's $250,000 or More	62,541	59,031
Retail CD's Less than $250,000	386,451	373,532
Total	$ 448,992	$ 432,563

Deposits (Schedule of Maturitie

Deposits (Schedule of Maturities of Certificates of Deposit) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deposit Type
2,015	$ 280,094
2,016	84,230
2,017	47,253
2,018	43,137
2,019	26,773
Thereafter	1,362
Total	482,849
Brokered CD's
Deposit Type
2,015	18,187
2,016	0
2,017	1,147
2,018	14,523
2,019	0
Thereafter	0
Total	33,857	$ 39,691
Retail CD's
Deposit Type
2,015	261,907
2,016	84,230
2,017	46,106
2,018	28,614
2,019	26,773
Thereafter	1,362
Total	$ 448,992	$ 432,563

Short-Term Borrowings (Narrativ

Short-Term Borrowings (Narrative) (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Aug. 04, 2014	Dec. 18, 2012
Short-term Borrowings
Revolving Line of Credit	$ 395,316,000	$ 283,231,000
Federal Funds Available from Correspondent Banks	$ 25,000,000
Unused line of credit, fixed rate	0.00%	3.50%	3.50%	3.80%
Short-term borrowings	$ 160,386,000	$ 88,277,000
Holding Company
Short-term Borrowings
Revolving Line of Credit	$ 15,000,000	$ 5,000,000	$ 10,000,000
Unused line of credit, fixed rate	3.00%
Line of Credit [Member] | Holding Company
Short-term Borrowings
Short-term borrowings	$ 0
Expiring in early 2016 [Member]
Short-term Borrowings
Federal Funds Available from Correspondent Banks	$ 20,000,000

Short-Term Borrowings (Short Te

Short-Term Borrowings (Short Term Borrowing) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Short-term Borrowings
Short-term borrowings	$ 160,386	$ 88,277
Interest on short-term borrowings	182	146	$ 114
Retail Repurchase Agreements
Short-term Borrowings
Short-term borrowings	84,386	73,277	42,590
Average balance	83,574	59,324	37,077
Highest month-end balance	92,711	76,459	46,850
Interest on short-term borrowings	$ 140	$ 99	$ 58
Weighted Average Interest Rate, End of Year	0.17%	0.17%	0.16%
Weighted Average Interest Rate, During the Year	0.17%	0.17%	0.16%
FHLB Advances
Short-term Borrowings
Short-term borrowings	$ 76,000	$ 15,000	$ 71,000
Average balance	16,863	36,678	44,127
Highest month-end balance	76,000	108,000	92,500
Interest on short-term borrowings	$ 42	$ 47	$ 55
Weighted Average Interest Rate, End of Year	0.35%	0.14%	0.14%
Weighted Average Interest Rate, During the Year	0.25%	0.13%	0.12%
Other Short-Term Borrowings
Short-term Borrowings
Short-term borrowings	$ 0	$ 0	$ 0
Average balance	0	38	90
Highest month-end balance	0	0	0
Interest on short-term borrowings	$ 0	$ 0	$ 1
Weighted Average Interest Rate, End of Year	0.00%	0.00%	0.00%
Weighted Average Interest Rate, During the Year	0.00%	0.75%	0.74%

Long-Term Borrowings (Narrative

Long-Term Borrowings (Narrative) (Details)	Mar. 06, 2015USD ($)semi_annual_period	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Aug. 04, 2014USD ($)	Dec. 18, 2012
Long-term borrowings
Proceeds from Issuance of Unsecured Debt		$ 24,000,000
Maturity Period of Long-Term Borrowing		5 years
Debt Instrument, Interest Rate, Stated Percentage		0.00%	3.50%		3.50%	3.80%
Total Risk-Based Capital Ratio Minimum Under Debt Covenant					12.50%
Nonperforming Assets to Tangible Capital plus Allowance for Loan Losses Maximum Under Debt Covenant					20.00%
Allowance for Loan Losses to Nonperforming Loans Minimum Under Debt Covenant					70.00%
Fixed charge coverage ratio minimum required by debt covenant					125.00%
Other Restricted Assets					$ 2,000,000
Callable national market repurchase agreements, Weighted-Average Rate		3.63%	3.63%
Net loss on other transactions		$ (520,000)	$ 67,000	$ 0
Junior subordinated debt securities		$ 6,736,000	0
Interest rate on capital securities	1.50%
Minimum
Long-term borrowings
Repurchase agreements, maturities period		5 years
Repurchase agreements, call option features at buyer discretion, initial call period		3 months
Maximum
Long-term borrowings
Repurchase agreements, maturities period		10 years
Repurchase agreements, call option features at buyer discretion, initial call period		5 years
Distributions on Capital Securities, Deferred, Number of Consecutive Semiannual Periods | semi_annual_period	20
FHLB putable non-amortizing, fixed-rate advances
Long-term borrowings
Long-term Federal Home Loan Bank Advances		$ 50,000,000	$ 83,995,000
FHLB advances, Weighted-Average Rate		3.32%	3.30%
FHLB putable non-amortizing, fixed-rate advances | Minimum
Long-term borrowings
FHLB advances, maturities period		10 years
FHLB putable non-amortizing, fixed-rate advances | Maximum
Long-term borrowings
FHLB advances, maturities period		20 years
FHLB amortizing, fixed-rate advances | Minimum
Long-term borrowings
FHLB advances,fixed rate intial period		3 months
FHLB amortizing, fixed-rate advances | Maximum
Long-term borrowings
FHLB advances,fixed rate intial period		5 years
Junior subordinated debt securities
Long-term borrowings
Long-term Federal Home Loan Bank Advances		$ 16,934,000	$ 40,719,000
FHLB advances, Weighted-Average Rate		2.69%	2.13%
Junior subordinated debt securities | Minimum
Long-term borrowings
FHLB advances, maturities period		10 years
Junior subordinated debt securities | Maximum
Long-term borrowings
FHLB advances, maturities period		20 years
Repayments of debt [Member] | FHLB putable non-amortizing, fixed-rate advances
Long-term borrowings
Extinguishment of Debt, Amount		$ 52,100,000
FHLB advances, Weighted-Average Rate		1.49%
NB&T Financial Group, Inc. [Member]
Long-term borrowings
Junior subordinated debt securities	$ 6,600,000

Long-Term Borrowings (Long Term

Long-Term Borrowings (Long Term Borrowing) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Aug. 04, 2014	Dec. 18, 2012
Long-term borrowings:
Callable national market repurchase agreements	$ 40,000	$ 40,000
Junior subordinated debt securities	6,736	0
Term note payable (parent company)	0	14,369
Long-term borrowings	$ 113,670	$ 179,083
Callable national market repurchase agreements, Weighted-Average Rate	3.63%	3.63%
Debt Instrument, Interest Rate, Stated Percentage	0.00%	3.50%	3.50%	3.80%
Total long-term borrowings, Weighted-Average Rate	3.25%	3.12%
FHLB putable non-amortizing, fixed rate advances
Long-term borrowings:
Long-term Federal Home Loan Bank Advances	$ 50,000	$ 83,995
FHLB advances, Weighted-Average Rate	3.32%	3.30%
Junior subordinated debt securities
Long-term borrowings:
Long-term Federal Home Loan Bank Advances	$ 16,934	$ 40,719
FHLB advances, Weighted-Average Rate	2.69%	2.13%
Junior Subordinated Debt [Member]
Long-term borrowings:
Debt, Weighted Average Interest Rate	1.83%	0.00%

Long-Term Borrowings (Minimum A

Long-Term Borrowings (Minimum Annual Retirements of Long-Term Borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Aggregate minimum annual retirements of long-term borrowings in future periods:
2,015	$ 2,945
2,016	2,330
2,017	82,390
2,018	1,426
2,019	3,901
Thereafter	20,678
Long-term borrowings	$ 113,670	$ 179,083
Weighted average interest rate, 2015 retirements	2.38%
Weighted average interest rate, 2016 retirements	2.45%
Weighted average interest rate, 2017 retirements	3.47%
Weighted average interest rate, 2018 retirements	2.60%
Weighted average interest rate, 2019 retirements	3.36%
Weighted average interest rate, thereafter	2.59%
Total long-term borrowings, Weighted-Average Rate	3.25%	3.12%

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 12, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Stock
Stock Repurchase Program, Authorized Amount		$ 20,000
Purchase of treasury stock		0
Purchase of treasury stock		$ 741	$ 520	$ 228
Proceeds from Issuance of Private Placement			$ 40,162
Preferred stock, shares authorized		50,000	50,000
Preferred stock, shares issued		0	0
Common Stock
Class of Stock
Proceeds from Issuance of Private Placement			$ 40,162
Private Placement [Member] | Common Stock
Class of Stock
Issuance of Private Placement		1,847,826
Proceeds from Issuance of Private Placement		$ 40,200
Sale of Stock, Price Per Share		$ 23
NB&T Financial Group, Inc. [Member] | Common Stock
Class of Stock
Stock Issued During Period, Shares, Acquisitions		3,207,698
Stock Issued During Period, Value, Acquisitions		$ 76,027
Subsequent Event [Member]
Class of Stock
Purchase of treasury stock	253,870
Purchase of treasury stock	$ 4,500

Stockholders' Equity (Stock Rol

Stockholders' Equity (Stock Rollforward) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Increase (Decrease) in Stock by Class
Common stock, shares issued, beginning of period	15,426,973
Treasury stock, shares, beginning of period	590,246
Changes related to deferred compensation plan:
Purchase of treasury stock	0
Changes related to private placement:
Common stock, shares issued, end of period	18,931,200	15,426,973
Treasury stock, shares, end of period	586,688	590,246
Common Stock
Class of Stock
Stock Issued During Period, Shares, Restricted Stock Award, Gross	131,011	101,926	83,206
Increase (Decrease) in Stock by Class
Common stock, shares issued, beginning of period	15,599,643	11,352,036	11,252,244
Changes related to stock-based compensation awards:
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited	(28,219)	(6,062)	(3,096)
Stock Issued During Period, Shares, Share-based Compensation, Gross	(2,810)	(100)
Changes related to dividend reinvestment plan:
Common shares issued under dividend reinvestment plan	18,257	17,230	19,682
Changes related to private placement:
Common stock, shares issued, end of period	18,931,200	15,599,643	11,352,036
Treasury Stock
Increase (Decrease) in Stock by Class
Treasury stock, shares, beginning of period	590,246	600,794	607,688
Changes related to stock-based compensation awards:
Release of restricted common shares	25,205	18,031	6,862
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		(2,792)
Stock Issued During Period, Shares, Share-based Compensation, Gross	(100)
Reissuance of treasury stock for common stock awards		(12,030)
Changes related to deferred compensation plan:
Purchase of treasury stock	7,654	4,236	3,652
Reissuance of treasury stock	(9,642)	(9,390)	(9,147)
Changes related to Board Compensation:
Common shares issued under compensation plan for Board of Directors	(10,231)	(8,603)	(8,261)
Stock Issued During Period, Shares, Employee Stock Purchase Plans	(16,446)
Changes related to private placement:
Treasury stock, shares, end of period	586,686	590,246	600,794
NB&T Financial Group, Inc. [Member] | Common Stock
Changes related to stock issued in acquisitions:
Stock Issued During Period, Shares, Acquisitions	3,207,698
NB&T Financial Group, Inc. [Member] | Common Stock
Changes related to stock issued in acquisitions:
Stock Issued During Period, Shares, Acquisitions	3,207,698
Midwest Bancshares, Inc. | Common Stock
Changes related to stock issued in acquisitions:
Stock Issued During Period, Shares, Acquisitions		256,282
Ohio Heritage Bancorp, Inc. | Common Stock
Changes related to stock issued in acquisitions:
Stock Issued During Period, Shares, Acquisitions		1,364,735
North Akron Savings Bank | Common Stock
Changes related to stock issued in acquisitions:
Stock Issued During Period, Shares, Acquisitions		665,570
Private Placement [Member] | Common Stock
Changes related to private placement:
Issuance of Private Placement		1,847,826
Private Placement [Member] | Common Stock
Changes related to private placement:
Issuance of Private Placement	1,847,826

Stockholders' Equity (Accumulat

Stockholders' Equity (Accumulated Other Comprehensive (Loss) Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss)
Unrealized Gain (Loss) on Securities	$ 2,542	$ (9,761)	$ 6,892
Unrealized Gain (Loss) on Securities	327	12,303	(16,653)
Unrealized Gain (Loss) on Securities	2,869	2,542	(9,761)
Unrecognized Net Pension and Postretirement Costs	(3,843)	(3,483)	(6,238)
Unrecognized Net Pension and Postretirement Costs	615	(360)	2,755
Unrecognized Net Pension and Postretirement Costs	(3,228)	(3,843)	(3,483)
Accumulated Other Comprehensive Income (Loss)	(1,301)	(13,244)	654
Accumulated Other Comprehensive Income (Loss)	942	11,943	(13,898)
Accumulated Other Comprehensive Income (Loss)	(359)	(1,301)	(13,244)
Realized gain on sale of securities, net of tax	(474)	(259)	(318)
Other Comprehensive Income (Loss), Reclassification Adjustment in Net Income, Net of Tax		(259)	(318)
Realized loss due to settlement and curtailment, net of tax	298	910	175
Realized loss due to settlement and curtailment, net of tax	298	910	175
Other comprehensive income, net of reclassifications and tax	801	12,562	(16,335)
Other comprehensive income, net of reclassifications and tax	317	(1,270)	2,580
Other comprehensive income, net of reclassifications and tax	$ 1,118	$ 11,292	$ (13,755)

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2010
Defined Benefit Plan Disclosure
Defined Benefit Plan, Description of Direction and Pattern of Change for Assumed Health Care Cost Trend Rate	0.065
Pension benefits to be amortized from accumulated other comprehensive income (loss) into net periodic cost over the next fiscal year	$ 99,000
Ultimate Health Care Cost Trend Rate	4.00%
Time Period of Lower Returns on Equity Securites	10 years
Cash and Cash Equivalents	$ 71,115,000	$ 61,454,000	$ 53,820,000	$ 62,542,000
Defined Contribution Plan, Employer Discretionary Contribution Amount	1,454,000	1,048,000	924,000
Pension benefits
Defined Benefit Plan Disclosure
Cash and Cash Equivalents	352,000	373,000
Accrued Investment Income Receivable	1,000	2,000
Components of net periodic benefit costs:
Interest cost	447,000	509,000	543,000
Expected return on plan assets	(493,000)	(589,000)	(659,000)
Amortization of net loss (gain)	117,000	137,000	189,000
Settlement of benefit obligation	459,000	1,400,000	270,000
Net periodic benefit cost	$ 530,000	$ 1,457,000	$ 343,000
Discount rate	3.80%	3.70%	3.75%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.50%	7.50%	7.50%
Postretirement benefits
Components of net periodic benefit costs:
Interest cost	$ 4,000	$ 6,000	$ 5,000
Expected return on plan assets	0	0	0
Amortization of net loss (gain)	(5,000)	(8,000)	(7,000)
Settlement of benefit obligation	0	0	0
Net periodic benefit cost	$ (1,000)	$ (2,000)	$ (2,000)
Discount rate	3.50%	4.30%	3.30%
Postretirement benefits | Employees hired before January 1, 2003
Defined Benefit Plan Disclosure
Contribution per eligible employee, coverage basis, consecutive period of highest average monthly compensation	5 years
Contribution per eligible employee, coverage basis, lastest service period	10 years
Postretirement benefits | Employees hired on or after January 1, 2003
Defined Benefit Plan Disclosure
Percentage of annual contribution per eligible employee	2.00%
Postretirement health benefits | Employees retired before January 1, 1993
Defined Benefit Plan Disclosure
Maximum coverage per eligible retiree	100.00%
Minimum
Defined Benefit Plan Disclosure
Defined Contribution Plan, Employer Matching Contribution, Percent	0.00%
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent	3.00%
Minimum | Equity securities
Defined Benefit Plan Disclosure
Actual Plan Asset Allocations	60.00%
Minimum | Investment securities
Defined Benefit Plan Disclosure
Actual Plan Asset Allocations	2000.00%
Maximum
Defined Benefit Plan Disclosure
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent	5.00%
Maximum | Equity securities
Defined Benefit Plan Disclosure
Actual Plan Asset Allocations	75.00%
Maximum | Investment securities
Defined Benefit Plan Disclosure
Actual Plan Asset Allocations	43.00%

Employee Benefit Plans (Changes

Employee Benefit Plans (Changes in Benefit Obligation, Fair Value of Assets and Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in plan assets:
Beginning balance	$ 7,884
Ending balance	6,771	$ 7,884
Amounts recognized in Accumulated Other Comprehensive Loss:
Total	3,228	3,843	$ 3,483	$ 6,238
Pension benefits
Change in benefit obligation:
Beginning balance	13,695	14,723
Interest cost	447	509	543
Plan participants’ contributions	0	0
Actuarial (gain) loss	(948)	2,060
Benefit payments	(148)	(163)
Settlements	(1,081)	(3,434)
Ending balance	11,965	13,695	14,723
Accumulated benefit obligation at December 31	11,965	13,695
Change in plan assets:
Beginning balance	8,259	11,287
Actual return on plan assets	(91)	569
Employer contributions	185	0
Plan participants’ contributions	0	0
Benefit payments	(148)	(163)
Settlements	(1,081)	(3,434)
Ending balance	7,124	8,259	11,287
Funded status at December 31	(4,841)	(5,436)
Amounts recognized in Consolidated Balance Sheets:
Accrued benefit liability	(4,841)	(5,436)
Net amount recognized	(4,841)	(5,436)
Amounts recognized in Accumulated Other Comprehensive Loss:
Unrecognized prior service cost	0	0
Unrecognized net loss	3,275	3,886
Total	$ 3,275	$ 3,886
Discount Rate	3.90%	3.50%
Other Postretirement Benefit Plans, Defined Benefit [Member]
Change in benefit obligation:
Beginning balance	$ 152	$ 143
Interest cost	4	6	5
Plan participants’ contributions	65	46
Actuarial (gain) loss	(10)	26
Benefit payments	(85)	(69)
Settlements	0	0
Ending balance	126	152	143
Accumulated benefit obligation at December 31	0	0
Change in plan assets:
Beginning balance	0	0
Actual return on plan assets	0	0
Employer contributions	20	23
Plan participants’ contributions	65	46
Benefit payments	(85)	(69)
Settlements	0	0
Ending balance	0	0	$ 0
Funded status at December 31	(126)	(152)
Amounts recognized in Consolidated Balance Sheets:
Accrued benefit liability	(126)	(152)
Net amount recognized	(126)	(152)
Amounts recognized in Accumulated Other Comprehensive Loss:
Unrecognized prior service cost	(2)	(2)
Unrecognized net loss	(47)	(43)
Total	$ (49)	$ (45)
Discount Rate	3.90%	3.50%
Mutual funds - equity
Change in plan assets:
Beginning balance	$ 5,756
Ending balance	4,908	$ 5,756
Mutual funds - taxable income
Change in plan assets:
Beginning balance	2,128
Ending balance	1,863	2,128
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring Basis
Change in plan assets:
Beginning balance	7,884
Ending balance	6,771	7,884
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring Basis | Mutual funds - equity
Change in plan assets:
Beginning balance	5,756
Ending balance	4,908	5,756
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring Basis | Mutual funds - taxable income
Change in plan assets:
Beginning balance	2,128
Ending balance	1,863	2,128
Significant Other Observable Inputs (Level 2) | Recurring Basis
Change in plan assets:
Beginning balance	0
Ending balance	0	0
Significant Other Observable Inputs (Level 2) | Recurring Basis | Mutual funds - equity
Change in plan assets:
Beginning balance	0
Ending balance	0	0
Significant Other Observable Inputs (Level 2) | Recurring Basis | Mutual funds - taxable income
Change in plan assets:
Beginning balance	0
Ending balance	$ 0	$ 0

Employee Benefit Plans (Cash Fl

Employee Benefit Plans (Cash Flows) (Details)	12 Months Ended
	Dec. 31, 2015USD ($)
Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2,015	$ 1,090,000
2,016	801,000
2,017	853,000
2,018	842,000
2,019	959,000
2020-2024	3,720,000
Total	8,265,000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2,015	21,000
2,016	13,000
2,017	12,000
2,018	12,000
2,019	12,000
2020-2024	48,000
Total	118,000
Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	475,000
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 500,000

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Valuation Allowance [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 5,800,000
Deferred Tax Assets, Gross	21,597,000	$ 16,257,000
Valuation allowance	605,000	0
Federal Income Tax Expense on Securities Transactions	255,000	$ 139,000	$ 171,000
Partnership investment
Valuation Allowance [Line Items]
Tax Credit Carryforward, Valuation Allowance	600,000
Deferred Tax Assets, Gross	$ 1,700,000

Income Taxes (Effective Tax Rat

Income Taxes (Effective Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Amount
Income tax computed at statutory federal tax rate									$ 5,051	$ 8,462	$ 10,179
Tax-exempt interest income									(1,109)	(726)	(645)
Investments in tax credit funds									(123)	(481)	(314)
Bank owned life insurance									(204)	(37)	2,183
Other, net									260	276	107
Income tax expense	$ 425	$ 1,370	$ 2,231	$ (151)	$ 2,040	$ 1,729	$ 1,577	$ 2,148	$ 3,875	$ 7,494	$ 11,510
Rate
Income tax computed at statutory federal tax rate									(34.10%)	(35.00%)	(35.00%)
Tax-exempt interest income									(7.50%)	(3.00%)	(2.20%)
Investments in tax credit funds									(0.80%)	(2.00%)	(1.10%)
Bank owned life insurance									(1.40%)	0.00%	7.50%
Other, net									1.80%	1.00%	0.40%
Income tax expense									26.20%	31.00%	39.60%

Income Taxes (Income Tax Expens

Income Taxes (Income Tax Expense) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Current income tax expense									$ 5,457	$ 3,659	$ 6,883
Deferred income tax (benefit) expense									(1,582)	3,835	4,627
Income tax expense	$ 425	$ 1,370	$ 2,231	$ (151)	$ 2,040	$ 1,729	$ 1,577	$ 2,148	$ 3,875	$ 7,494	$ 11,510

Income Taxes (Deferred Tax Asse

Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets
Allowance for loan losses	$ 12,144	$ 10,493
Bank premises and equipment	1,060	0
Available-for-sale securities	0	0
Investments	1,842	1,956
Accrued employee benefits	2,748	2,662
Other	3,803	1,146
Gross deferred tax assets	21,597	16,257
Valuation allowance	605	0
Total deferred tax assets	20,992	16,257
Deferred Tax Liabilities
Purchase accounting adjustments	11,342	6,316
Available-for-sale securities	1,544	1,368
Bank premises and equipment	0	2,470
Deferred loan income	2,260	1,924
Other	664	684
Total deferred tax liabilities	15,810	12,762
Net deferred tax asset	5,182	$ 3,495
Partnership investment
Valuation Allowance [Line Items]
Tax Credit Carryforward, Valuation Allowance	600
Deferred Tax Assets
Gross deferred tax assets	$ 1,700

Income Taxes (Uncertain Tax Pos

Income Taxes (Uncertain Tax Positions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Uncertain tax positions, beginning of year	$ 240	$ 30
Gross increase based on tax positions related to current year	182	178
Gross increase for tax position taken during prior years	0	33
Gross decrease for tax positions taken during prior years	(2)	0
Gross decrease due to the statute of limitations	(3)	(1)
Uncertain tax positions, end of year	$ 417	$ 240

Income Taxes (Valuation Allowan

Income Taxes (Valuation Allowance) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets, Gross	$ 21,597	$ 16,257
Partnership investment
Tax Credit Carryforward, Valuation Allowance	600
Deferred Tax Assets, Gross	$ 1,700

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								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Distributed earnings allocated to common shareholders									$ 10,426	$ 7,095	$ 5,749
Undistributed earnings allocated to common shareholders									404	9,472	11,685
Net earnings allocated to common shareholders									$ 10,830	$ 16,567	$ 17,434
Weighted-average number of common shares outstanding - basic	18,142,997	18,127,131	18,116,090	15,802,334	14,660,314	12,632,341	10,755,509	10,636,089	17,555,140	12,183,352	10,581,222
Effect of potentially dilutive common shares									132,655	122,872	98,195
Total weighted-average diluted common shares outstanding	18,278,272	18,271,979	18,253,918	15,930,235	14,809,289	12,765,880	10,880,090	10,740,884	17,687,795	12,306,224	10,679,417
Earnings per common share - basic	$ 0.14	$ 0.23	$ 0.27	$ (0.04)	$ 0.29	$ 0.33	$ 0.32	$ 0.45	$ 0.62	$ 1.36	$ 1.65
Earnings per common share - diluted	$ 0.14	$ 0.22	$ 0.27	$ (0.04)	$ 0.28	$ 0.32	$ 0.32	$ 0.44	$ 0.61	$ 1.35	$ 1.63
Antidilutive Securities Excluded from Computation of Earnings Per Share
Stock options and stock appreciation rights									46,109	55,184	91,902

Financial Instruments with Of99

Financial Instruments with Off-Balance Sheet Risk (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Fair Value of Interest Rate Swaps	$ 3.1	$ 2.1
Interest Rate Swap
Derivative [Line Items]
Notional Amount of Interest Rate Derivatives	$ 72.2	$ 44

Financial Instruments with O100

Financial Instruments with Off-Balance Sheet Risk (Loan Commitments and Standby Letters of Credit) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Loan Commitments and Standby Letters of Credit [Line Items]
Contractual Loan Commitments	$ 395,316	$ 283,231
Standby letters of credit	22,970	30,837
Home equity lines of credit
Loan Commitments and Standby Letters of Credit [Line Items]
Contractual Loan Commitments	84,148	62,704
Construction Loans [Member]
Loan Commitments and Standby Letters of Credit [Line Items]
Contractual Loan Commitments	77,479	46,781
Other loan commitments
Loan Commitments and Standby Letters of Credit [Line Items]
Contractual Loan Commitments	$ 233,689	$ 173,746

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Regulatory Matters [Abstract]
Required Reserve Balances with Federal Reserve Bank	$ 16,300	$ 12,200
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments	2,600
Holding Company
Regulatory Capital Requirements
Common Equity Tier 1 Capital	$ 288,416
Common Equity Tier 1 Risk Based Capital to Risk Weighted Assets	13.40%
Common Equity Tier 1 Risk Based Capital Required for Capital Adequacy	$ 97,083
Common Equity Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.50%
Common Equity Tier 1 Risk Based Capital Required to be Well Capitalized	$ 140,232
Common Equity Tier 1 Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%
Capital	$ 313,974	$ 261,371
Capital to Risk Weighted Assets	14.60%	15.50%
Capital Required for Capital Adequacy	$ 172,593	$ 135,037
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Capital Required to be Well Capitalized	$ 215,741	$ 168,797
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Tier One Risk Based Capital	$ 295,151	$ 241,707
Tier One Risk Based Capital to Risk Weighted Assets	13.70%	14.30%
Tier One Risk Based Capital Required for Capital Adequacy	$ 129,445	$ 67,519
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	4.00%
Tier One Risk Based Capital Required to be Well Capitalized	$ 172,593	$ 101,278
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	6.00%
Tier One Leverage Capital	$ 295,151	$ 241,707
Tier One Leverage Capital to Average Assets	9.50%	9.90%
Tier One Leverage Capital Required for Capital Adequacy	$ 123,973	$ 97,470
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 154,967	$ 121,837
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%
Risk Weighted Assets	$ 2,157,410	$ 1,687,968

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under 2006 Equity Plan	1,081,260
Common shares authorized under the 2006 Equity Plan	800,000
Unrecognized stock-based compensation expense related to unvested awards, amount	$ 2,000,000
Unrecognized stock-based compensation expense related to unvested awards, weighted-average period of recognition	1 year 11 months
Common shares issued under Board of Directors' compensation plan	$ (134,000)	$ (207,000)	$ 179,000
Allocated Share-based Compensation Expense	1,843,000	$ 2,111,000	1,362,000
Unrestricted Stock Granted to Employees		12,030
Stock-based compensation expense	1,843,000	$ 2,111,000	1,362,000
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares issued under Board of Directors' compensation plan	$ (177,000)	(221,000)	$ 213,000
Stock-based compensation expense		$ 298,000

Stock-Based Compensation (Optio

Stock-Based Compensation (Options Outstanding & Exercisable) (Details)	12 Months Ended
	Dec. 31, 2015USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding Shares, Beginning Balance | shares	38,577
Expired | shares	18,267
Outstanding Shares, Ending Balance | shares	20,310
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options Outstanding, Weighted Average Exercise Price	$ 28.09
Options Expired, Weighted Average Exercise Price	27.27
Options Outstanding, Weighted Average Exercise Price	$ 28.83
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options Outstanding, Weighted Average Remaining Contractual Term	4 months
Options Outstanding, Intrinsic Value | $	$ 0
Options Exercisable | shares	20,310
Options Exercisable, Weighted Average Exercise Price	$ 28.83
Options Exercisable, Weighted Average Remaining Contractual Term	4 months
Options Exercisable, Intrinsic Value | $	$ 0
Options Outstanding & Exercisable, Common Shares Subject to Options Outstanding | shares	20,310
Options Outstanding & Exercisable, Weighted-Average Remaining Contractual Life	4 months
Options Outstanding & Exercisable, Weighted-Average Exercise Price (usd per share)	$ 28.83
Exercise Price Range Five [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options Outstanding & Exercisable, Range of Exercise Prices, Lower Range Limit	$ 28.25
Options Outstanding & Exercisable, Common Shares Subject to Options Outstanding | shares	10,310
Options Outstanding & Exercisable, Weighted-Average Remaining Contractual Life	1 month
Options Outstanding & Exercisable, Weighted-Average Exercise Price (usd per share)	$ 28.25
Exercise Price Range Six [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options Outstanding & Exercisable, Range of Exercise Prices, Lower Range Limit	28.57
Options Outstanding & Exercisable, Range of Exercise Prices, Upper Range Limit	$ 30
Options Outstanding & Exercisable, Common Shares Subject to Options Outstanding | shares	10,000
Options Outstanding & Exercisable, Weighted-Average Remaining Contractual Life	5 months
Options Outstanding & Exercisable, Weighted-Average Exercise Price (usd per share)	$ 29.43

Stock-Based Compensation (Stock

Stock-Based Compensation (Stock Appreciation Rights) (Details) - SARs	12 Months Ended
	Dec. 31, 2015USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Subject to SARs Outstanding & Exercisable	17,748
Weighted-Average Remaining Contractual Life	1 year 6 months
Number of Common Shares Subject to SARs
Outstanding at January 1 (in shares)	21,292
Forfeited (in shares)	3,544
Outstanding at December 31 (in shares)	17,748
Weighted- Average Exercise Price
Outstanding at January 1 (in dollars per share) | $ / shares	$ 25.96
Forfeited (in dollars per share) | $ / shares	26.47
Outstanding at December 31 (in dollars per share) | $ / shares	$ 25.86
Weighted - Average Grant Date Fair Value
Exercisable at December 31 (in shares)	17,748
Exercisable at December 31 (in dollars per share) | $ / shares	$ 25.86
Outstanding at December 31, Weighted-Average Remaining Contractual Life	1 year 6 months
Exercisable at December 31, Weighted-Average Remaining Contractual Life	1 year 6 months
Outstanding at December 31 | $	$ 0
Exercisable at December 31 | $	$ 0
Exercise Price $23.26
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price | $ / shares	$ 23.26
Number of Shares Subject to SARs Outstanding & Exercisable	2,000
Weighted-Average Remaining Contractual Life	1 year 7 months
Exercise Price $23.77
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price | $ / shares	$ 23.77
Number of Shares Subject to SARs Outstanding & Exercisable	8,782
Weighted-Average Remaining Contractual Life	1 year 11 months
Exercise Price $29.25
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Price | $ / shares	$ 29.25
Number of Shares Subject to SARs Outstanding & Exercisable	6,966
Weighted-Average Remaining Contractual Life	1 year

Stock-Based Compensation (St105

Stock-Based Compensation (Stock-Based Compensation and Related Tax Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation [Abstract]
Total stock-based compensation	$ 1,843	$ 2,111	$ 1,362
Recognized tax benefit	(645)	(739)	(477)
Net expense recognized	$ 1,198	$ 1,372	$ 885

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 06, 2016	Jul. 17, 2015	Mar. 06, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition
Acquired intangibles												$ 10,318	$ 4,999
Acquired goodwill												34,069	28,042
Non-interest expense related to acquisitions				$ 10,700								10,700
Net loss on asset disposals and other transactions				(498)	$ (51)	$ (136)	$ (1,103)	$ (146)	$ (109)	$ (187)	$ 11	(1,788)	(431)	$ (155)
Goodwill				132,631				$ 98,562				132,631	98,562	$ 70,520
NB&T Financial Group, Inc. [Member]
Business Acquisition
Business Acquisition, Pro Forma Revenue												149,965	141,221
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments, Other Assets				(600)
Total purchase price			$ 102,700									102,709
Net loss on asset disposals and other transactions												(600)
Shares, Outstanding			3,442,329
Cash purchase price per share			$ 23.70
Number of common shares of Peoples issued for each common share of acquired company			0.9319
Goodwill, Purchase Accounting Adjustments				600
Goodwill				33,637								33,637
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual													26,200
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual													7,800
Business Acquisition, Pro Forma Net Income (Loss)												12,259	$ 23,512
NB&T Financial Group, Inc. [Member] | Cash Portion of Purchase Price
Business Acquisition
Cash purchase price per share			$ 7.75
Lebanon, Ohio Insurance Agency [Member]
Business Acquisition
Total purchase price		$ 900
Acquired intangibles		500
Acquired goodwill		$ 400
Salaries and Employee Benefit Costs [Member]
Business Acquisition
Non-interest expense related to acquisitions				4,400								4,400
Professional Service Fees [Member]
Business Acquisition
Non-interest expense related to acquisitions				1,700								1,700
Other Non-Interest Expenses [Member]
Business Acquisition
Non-interest expense related to acquisitions				4,300								4,300
Data processing and software expense [Member]
Business Acquisition
Non-interest expense related to acquisitions				$ 300								$ 300
Subsequent Event [Member] | Marietta, Ohio financial advisory book of business [Member]
Business Acquisition
Total purchase price	$ 500

Acquisitions Acquisitions Pu107

Acquisitions Acquisitions Purchase Price and Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ / shares in Units, $ in Thousands	Mar. 06, 2015	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net Assets at Fair Value
Goodwill		$ 132,631	$ 132,631	$ 98,562	$ 70,520
NB&T Financial Group, Inc. [Member]
Business Acquisition
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments, Other Assets		(600)
Goodwill, Purchase Accounting Adjustments		600
Purchase Price
Common shares outstanding at merger announcement	3,442,329
Cash purchase price per share	$ 23.70
Cash in lieu of fractional shares issued		4	4
Number of common shares of Peoples issued for each common share of acquired company	0.9319
Total purchase price	$ 102,700		102,709
Net Assets at Fair Value
Cash and cash equivalents	124,825
Bank premises and equipment, net	10,702
Other intangible assets	10,130
Other assets	24,458
Total assets	711,095
Deposits	629,512
Borrowings	6,570
Accrued expenses and other liabilities	5,941
Total liabilities	642,023
Net assets	69,072
Goodwill		$ 33,637	$ 33,637
NB&T Financial Group, Inc. [Member] | Investment securities
Net Assets at Fair Value
Debt securities and loans	156,392
NB&T Financial Group, Inc. [Member] | Loans, including loans held for sale, net of deferred fees and costs
Net Assets at Fair Value
Debt securities and loans	$ 384,588
Cash Portion of Purchase Price | NB&T Financial Group, Inc. [Member]
Purchase Price
Cash purchase price per share	$ 7.75
Cash consideration	$ 26,678
Stock Portion of Purchase Price | NB&T Financial Group, Inc. [Member]
Purchase Price
Cash consideration	$ 76,027

Acquisitions Acquired Loans at

Acquisitions Acquired Loans at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	May. 30, 2014
Business Acquisition
Accretable yield	$ (7,042)	$ (3,172)
Midwest Bancshares, Inc. | Acquired Nonimpaired Loans
Business Acquisition
Contractual cash flows			$ 497,451
Nonaccretable difference			45,828
Expected cash flows			451,623
Accretable yield			90,346
Fair value			361,277
Midwest Bancshares, Inc. | Acquired Purchased Credit Impaired Loans
Business Acquisition
Nonaccretable difference			13,336
Contractual cash flows			40,258
Expected cash flows			26,922
Accretable yield			3,611
Fair value			$ 23,311

Acquisitions Pro Forma Infor109

Acquisitions Pro Forma Information (Details) - NB&T Financial Group, Inc. [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition
Business Acquisition, Pro Forma Revenue	$ 149,965	$ 141,221
Business Acquisition, Pro Forma Net Income (Loss)	$ 12,259	$ 23,512

Parent Company Only Financia110

Parent Company Only Financial Information (Condensed Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 53,663	$ 42,230
Due from subsidiary bank	3,875	1,015
Total available-for-sale securities	784,701	636,880
Other assets	58,307	35,772
Total assets	3,258,970	2,567,769
Liabilities
Accrued expenses and other liabilities	29,181	27,217
Dividends payable	103	24
Long-term borrowings	113,670	179,083
Junior subordinated debt securities	6,736	0
Total liabilities	2,839,181	2,227,651
Common stockholders' equity	419,789	340,118	$ 221,553	$ 221,728
Total liabilities and stockholders' equity	3,258,970	2,567,769
Bank
Assets
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	385,258	281,360
Non-Bank
Assets
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	29,155	30,693
Holding Company
Assets
Cash and due from banks	50	50
Interest-bearing deposits in subsidiary bank	4,437	41,666
Total available-for-sale securities	5,813	5,214
Other assets	1,070	878
Total assets	429,658	360,876
Liabilities
Accrued expenses and other liabilities	3,030	6,365
Long-term borrowings	0	14,369
Junior subordinated debt securities	6,736	0
Total liabilities	9,869	20,758
Common stockholders' equity	419,789	340,118
Total liabilities and stockholders' equity	$ 429,658	$ 360,876

Parent Company Only Financia111

Parent Company Only Financial Information (Condensed Statements of Income) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements
Net gain on securities transactions	$ 56,000	$ 62,000	$ 11,000	$ 600,000	$ 238,000	$ 124,000	$ 66,000	$ (30,000)	$ 729,000	$ 398,000	$ 489,000
Net loss on other transactions									(520,000)	67,000	0
Total interest income									108,333,000	80,200,000	67,071,000
Other expense	25,306,000	24,876,000	26,902,000	23,198,000	21,596,000	20,378,000	18,451,000	18,404,000
Applicable income tax benefit	425,000	1,370,000	2,231,000	(151,000)	2,040,000	1,729,000	1,577,000	2,148,000	3,875,000	7,494,000	11,510,000
Net income	$ 2,583,000	$ 4,134,000	$ 4,913,000	$ (689,000)	$ 4,245,000	$ 4,179,000	$ 3,477,000	$ 4,783,000	10,941,000	16,684,000	17,574,000
Bank
Condensed Financial Statements
Dividends from subsidiary bank									17,500,000	21,000,000	15,000,000
Non-Bank
Condensed Financial Statements
Dividends from subsidiary bank									2,000,000	500,000	0
Holding Company
Condensed Financial Statements
Interest and other income									206,000	205,000	132,000
Total interest income									19,706,000	21,705,000	15,132,000
Interest on junior subordinated debentures held by subsidiary trust									304,000	0	0
Intercompany management fees									3,171,000	1,546,000	1,257,000
Other expense									5,653,000	4,578,000	3,411,000
Total expenses									9,128,000	6,124,000	4,668,000
Income before federal income taxes and equity in (excess dividends from) undistributed earnings of subsidiaries									10,578,000	15,581,000	10,464,000
Applicable income tax benefit									(3,139,000)	(2,102,000)	(1,510,000)
(Excess dividends from) equity in undistributed earnings of subsidiaries									(2,776,000)	(999,000)	5,600,000
Net income									$ 10,941,000	$ 16,684,000	$ 17,574,000

Parent Company Only Financia112

Parent Company Only Financial Information (Statement of Cash Flow) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2010
Operating activities:
Net income	$ 2,583,000	$ 4,134,000	$ 4,913,000	$ (689,000)	$ 4,245,000	$ 4,179,000	$ 3,477,000	$ 4,783,000	$ 10,941,000	$ 16,684,000	$ 17,574,000
Depreciation, amortization and accretion, net									18,503,000	13,174,000	16,110,000
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on investment securities	(56,000)	$ (62,000)	$ (11,000)	(600,000)	(238,000)	$ (124,000)	$ (66,000)	30,000	(729,000)	(398,000)	(489,000)
Loss (gain) on debt extinguishment									520,000	(67,000)	0
Net cash provided by operating activities									47,882,000	31,495,000	40,464,000
Investing activities:
Business combinations, net of cash received									97,277,000	17,081,000	(4,536,000)
Net cash used in investing activities									(1,110,000)	(14,163,000)	(80,013,000)
Financing activities:
Proceeds from long-term borrowings									0	5,269,000	0
Payments on long-term borrowings									(72,446,000)	(10,288,000)	(7,025,000)
Purchase of treasury stock									741,000	520,000	228,000
Proceeds from issuance of common shares									0	40,242,000	8,000
Cash dividends paid									(10,065,000)	(6,767,000)	(5,419,000)
Excess tax benefit from share-based payments									51,000	85,000	79,000
Net cash (used in) provided by financing activities									(37,111,000)	(9,698,000)	30,827,000
Net increase (decrease) in cash and cash equivalents									9,661,000	7,634,000	(8,722,000)
Cash and cash equivalents at beginning of period				61,454,000				53,820,000	61,454,000	53,820,000
Cash and cash equivalents at end of period	71,115,000				61,454,000				71,115,000	61,454,000	53,820,000
Supplemental cash flow information:
Interest paid									11,541,000	10,766,000	11,839,000
Holding Company
Operating activities:
Net income									10,941,000	16,684,000	17,574,000
Depreciation, amortization and accretion, net									165,000	0	0
Adjustments to reconcile net income to net cash provided by operating activities:
Excess dividends from (equity in) undistributed earnings of subsidiaries									2,776,000	999,000	(5,600,000)
Other, net									(1,903,000)	1,825,000	1,803,000
Net cash provided by operating activities									11,979,000	19,508,000	13,777,000
Investing activities:
Investment in subsidiaries									(104,584,000)	(65,822,000)	0
Change in receivable from subsidiary									(2,860,000)	(187,000)	(619,000)
Business combinations, net of cash received									83,391,000	54,386,000	0
Net cash used in investing activities									(24,053,000)	(11,623,000)	(619,000)
Financing activities:
Payments on long-term borrowings									(14,400,000)	(4,800,000)	(4,800,000)
Purchase of treasury stock									(741,000)	(520,000)	(228,000)
Proceeds from issuance of common shares									0	40,242,000	8,000
Cash dividends paid									(10,065,000)	(6,767,000)	(5,419,000)
Excess tax benefit from share-based payments									51,000	85,000	79,000
Net cash (used in) provided by financing activities									(25,155,000)	28,240,000	(10,360,000)
Net increase (decrease) in cash and cash equivalents									(37,229,000)	36,125,000	2,798,000
Cash and cash equivalents at the beginning of year					41,716,000					41,716,000	5,591,000	$ 2,793,000
Cash and cash equivalents at beginning of period				$ 41,716,000				$ 5,591,000	41,716,000	5,591,000
Cash and cash equivalents at end of period	$ 4,487,000				$ 41,716,000				4,487,000	41,716,000	5,591,000
Supplemental cash flow information:
Interest paid									$ 594,000	$ 672,000	$ 915,000

Summarized Quarterly Informa113

Summarized Quarterly Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summarized Quarterly Information (Unaudited) [Abstract]
Total interest income	$ 28,430	$ 28,178	$ 27,566	$ 24,159	$ 22,868	$ 20,566	$ 18,614	$ 18,152
Total interest expense	2,566	2,642	2,773	2,740	2,744	2,707	2,571	2,672	$ 10,721	$ 10,694	$ 11,686
Net interest income	25,864	25,536	24,793	21,419	20,124	17,859	16,043	15,480	97,612	69,506	55,385
Provision for loan losses	7,238	5,837	672	350	128	(380)	583	8
Net loss on asset disposals and other transactions	(498)	(51)	(136)	(1,103)	(146)	(109)	(187)	11	(1,788)	(431)	(155)
Net gain on securities transactions	56	62	11	600	238	124	66	(30)	729	398	489
Other income	12,101	11,906	11,926	11,508	10,178	9,861	9,719	10,295
Amortization of other intangible assets	1,133	1,127	1,144	673	516	367	282	263	4,077	1,428	807
Acquisition-related expenses	838	109	732	9,043	1,869	1,462	1,271	150
Other expense	25,306	24,876	26,902	23,198	21,596	20,378	18,451	18,404
Applicable income tax benefit	425	1,370	2,231	(151)	2,040	1,729	1,577	2,148	3,875	7,494	11,510
Net income	$ 2,583	$ 4,134	$ 4,913	$ (689)	$ 4,245	$ 4,179	$ 3,477	$ 4,783	$ 10,941	$ 16,684	$ 17,574
Earnings per common share - basic	$ 0.14	$ 0.23	$ 0.27	$ (0.04)	$ 0.29	$ 0.33	$ 0.32	$ 0.45	$ 0.62	$ 1.36	$ 1.65
Earnings per common share - diluted	$ 0.14	$ 0.22	$ 0.27	$ (0.04)	$ 0.28	$ 0.32	$ 0.32	$ 0.44	$ 0.61	$ 1.35	$ 1.63
Weighted-average number of common shares outstanding - basic	18,142,997	18,127,131	18,116,090	15,802,334	14,660,314	12,632,341	10,755,509	10,636,089	17,555,140	12,183,352	10,581,222
Weighted-average number of common shares outstanding - diluted	18,278,272	18,271,979	18,253,918	15,930,235	14,809,289	12,765,880	10,880,090	10,740,884	17,687,795	12,306,224	10,679,417

Uncategorized Items - pebo-2015

Label	Element	Value
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	10 years
Employee Stock Option [Member] | Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	3 years
Employee Stock Option [Member] | Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	6 months
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Intrinsic Value	pebo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue	$ 654,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Intrinsic Value	pebo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue	1,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Intrinsic Value	pebo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue	$ 2,000,000
Restricted Stock [Member] | Performance-based Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	25,669
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	108,411
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	$ 21.74
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	125,079
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	158,763
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	$ 23.62
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	21.73
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	$ 22.86
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	49,058
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	$ 22.70
Restricted Stock [Member] | Time-based Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	2,550
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	22,600
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	$ 18.21
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	47,591
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	30,734
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	$ 21.13
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	19.48
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	$ 21.76
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	36,907
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	$ 24.94
Restricted Stock [Member] | Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	6 months
Restricted Stock [Member] | Non-employee Directors [Member] | Time-based Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	5,600
Restricted Stock [Member] | Maximum [Member] | Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	3 years
Restricted Stock [Member] | Minimum [Member] | Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	1 year
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	3 years