10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2015

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number 000-08467

WESBANCO, INC.

(Exact name of Registrant as specified in its charter)

WEST VIRGINIA	55-0571723
(State of incorporation)	(IRS Employer Identification No.)
1 Bank Plaza, Wheeling, WV	26003
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: 304-234-9000

NOT APPLICABLE

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  þ    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  þ    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	þ	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).    Yes  ¨    No  þ

As of April 30, 2015, there were 38,449,812 shares of WesBanco, Inc. common stock, $2.0833 par value, outstanding.

WESBANCO, INC.

TABLE OF CONTENTS

Item No.	ITEM	Page No.
	PART I - FINANCIAL INFORMATION
1	Financial Statements
	Consolidated Balance Sheets at March 31, 2015 (unaudited) and December 31, 2014		3
	Consolidated Statements of Comprehensive Income for the three months ended March 31, 2015 and 2014 (unaudited)		4
	Consolidated Statements of Changes in Shareholders’ Equity for the three months ended March 31, 2015 and 2014 (unaudited)		5
	Consolidated Statements of Cash Flows for the three months ended March 31, 2015 and 2014 (unaudited)		6
	Notes to Consolidated Financial Statements (unaudited)		7
2	Management’s Discussion and Analysis of Financial Condition and Results of Operations		28
3	Quantitative and Qualitative Disclosures About Market Risk		47
4	Controls and Procedures		49
	PART II - OTHER INFORMATION
1	Legal Proceedings		50
2	Unregistered Sales of Equity Securities and Use of Proceeds		51
6	Exhibits		52
	Signatures		53

2

PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

WESBANCO, INC. CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except shares)	March 31, 2015			December 31, 2014
ASSETS
Cash and due from banks, including interest bearing amounts of $17,871 and $8,405, respectively	$	92,974		$	94,002
Securities:
Available-for-sale, at fair value		1,654,264			917,424
Held-to-maturity (fair values of $772,843 and $619,617, respectively)		743,925			593,670
Total securities		2,398,189			1,511,094
Loans held for sale		6,064			5,865
Portfolio loans, net of unearned income		4,873,721			4,086,766
Allowance for loan losses		(44,173	)		(44,654	)
Net portfolio loans		4,829,548			4,042,112
Premises and equipment, net		110,900			93,135
Accrued interest receivable		25,232			18,481
Goodwill and other intangible assets, net		493,176			319,506
Bank-owned life insurance		153,991			123,298
Other assets		123,205			89,072
Total Assets	$	8,233,279		$	6,296,565
LIABILITIES
Deposits:
Non-interest bearing demand	$	1,249,521		$	1,061,075
Interest bearing demand		1,199,801			885,037
Money market		1,018,184			954,957
Savings deposits		1,064,808			842,818
Certificates of deposit		1,883,888			1,305,096
Total deposits		6,416,202			5,048,983
Federal Home Loan Bank borrowings		432,456			223,126
Other short-term borrowings		76,630			80,690
Junior subordinated debt owed to unconsolidated subsidiary trusts		142,269			106,176
Total borrowings		651,355			409,992
Accrued interest payable		2,297			1,620
Other liabilities		72,041			47,780
Total Liabilities		7,141,895			5,508,375
SHAREHOLDERS’ EQUITY
Preferred stock, no par value; 1,000,000 shares authorized; none outstanding		—			—
Common stock, $2.0833 par value; 50,000,000 shares authorized; 38,546,042 and 29,367,511 issued in 2015 and 2014, respectively; outstanding: 38,449,812 and 29,298,188 shares in 2015 and 2014, respectively		80,304			61,182
Capital surplus		520,596			244,661
Retained earnings		509,622			504,578
Treasury stock (96,230 and 69,323 shares in 2015 and 2014, respectively, at cost)		(3,061	)		(2,151	)
Accumulated other comprehensive loss		(13,624	)		(18,825	)
Deferred benefits for directors		(2,453	)		(1,255	)
Total Shareholders’ Equity		1,091,384			788,190
Total Liabilities and Shareholders’ Equity	$	8,233,279		$	6,296,565

See Notes to Consolidated Financial Statements.

3

WESBANCO, INC. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	For the Three Months Ended March 31,
(unaudited, in thousands, except shares and per share amounts)	2015		2014
INTEREST AND DIVIDEND INCOME
Loans, including fees	$	47,713	$	42,746
Interest and dividends on securities:
Taxable		8,498		7,225
Tax-exempt		3,533		3,385
Total interest and dividends on securities		12,031		10,610
Other interest income		635		101
Total interest and dividend income		60,379		53,457
INTEREST EXPENSE
Interest bearing demand deposits		422		374
Money market deposits		456		440
Savings deposits		148		130
Certificates of deposit		2,872		3,630
Total interest expense on deposits		3,898		4,574
Federal Home Loan Bank borrowings		557		211
Other short-term borrowings		75		557
Junior subordinated debt owed to unconsolidated subsidiary trusts		894		790
Total interest expense		5,424		6,132
NET INTEREST INCOME		54,955		47,325
Provision for credit losses		1,289		2,199
Net interest income after provision for credit losses		53,666		45,126
NON-INTEREST INCOME
Trust fees		6,053		5,648
Service charges on deposits		3,652		3,860
Electronic banking fees		3,325		3,013
Net securities brokerage revenue		2,059		1,829
Bank-owned life insurance		1,251		875
Net gains on sales of mortgage loans		272		154
Net securities gains		22		10
Net gain on other real estate owned and other assets		122		113
Other income		1,434		1,547
Total non-interest income		18,190		17,049
NON-INTEREST EXPENSE
Salaries and wages		18,357		16,467
Employee benefits		7,316		5,708
Net occupancy		3,490		3,491
Equipment		2,973		2,783
Marketing		965		1,003
FDIC insurance		910		877
Amortization of intangible assets		566		495
Restructuring and merger-related expense		9,733		—
Other operating expenses		9,131		9,271
Total non-interest expense		53,441		40,095
Income before provision for income taxes		18,415		22,080
Provision for income taxes		4,528		5,659
NET INCOME	$	13,887	$	16,421
EARNINGS PER COMMON SHARE
Basic	$	0.40	$	0.56
Diluted	$	0.40	$	0.56
AVERAGE COMMON SHARES OUTSTANDING
Basic		34,393,137		29,182,183
Diluted		34,478,335		29,262,680
DIVIDENDS DECLARED PER COMMON SHARE	$	0.23	$	0.22
COMPREHENSIVE INCOME	$	19,088	$	19,694

See Notes to Consolidated Financial Statements.

4

WESBANCO, INC. CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

For the Three Months Ended March 31, 2015 and 2014

	Common Stock														Accumulated Other			Deferred
(unaudited, in thousands, except shares and per share amounts)	Shares Outstanding			Amount		Capital Surplus			Retained Earnings			Treasury Stock			Comprehensive Income (Loss)			Benefits for Directors			Total
December 31, 2014		29,298,188		$	61,182	$	244,661		$	504,578		$	(2,151	)	$	(18,825	)	$	(1,255	)	$	788,190
Net income		—			—		—			13,887			—			—			—			13,887
Other comprehensive income		—			—		—			—			—			5,201			—			5,201
Comprehensive income		—			—		—			—			—			—			—			19,088
Common dividends declared ($0.23 per share)		—			—		—			(8,843	)		—			—			—			(8,843	)
Shares issued for acquisition		9,178,531			19,122		274,507			—			—			—			—			293,629
Treasury shares acquired		(38,237	)		—		—			—			(1,262	)		—			—			(1,262	)
Stock options exercised		11,330			—		(44	)		—			352			—			—			308
Restricted stock granted		—			—		—			—			—			—			—			—
Stock compensation expense		—			—		274			—			—			—			—			274
Deferred benefits for directors- net		—			—		1,198			—			—			—			(1,198	)		—
March 31, 2015		38,449,812		$	80,304	$	520,596		$	509,622		$	(3,061	)	$	(13,624	)	$	(2,453	)	$	1,091,384
December 31, 2013		29,175,236		$	61,182	$	244,974		$	460,351		$	(5,969	)	$	(12,734	)	$	(1,209	)	$	746,595
Net income		—			—		—			16,421			—			—			—			16,421
Other comprehensive income		—			—		—			—			—			3,273			—			3,273
Comprehensive income		—			—		—			—			—			—			—			19,694
Common dividends declared ($0.22 per share)		—			—		—			(6,420	)		—			—			—			(6,420	)
Treasury shares acquired		(2,258	)		—		49			—			(68	)		—			—			(19	)
Stock options exercised		37,092			—		(176	)		—			1,152			—			—			976
Restricted stock granted		2,040			—		(63	)		—			63			—			—			—
Stock compensation expense		—			—		291			—			—			—			—			291
Deferred benefits for directors- net		—			—		10			—			—			—			(10	)		—
March 31, 2014		29,212,110		$	61,182	$	245,085		$	470,352		$	(4,822	)	$	(9,461	)	$	(1,219	)	$	761,117

See Notes to Consolidated Financial Statements.

5

WESBANCO, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS

	For the Three Months Ended March 31,
(unaudited, in thousands)	2015			2014
NET CASH PROVIDED BY OPERATING ACTIVITIES	$	36,064		$	23,985
INVESTING ACTIVITIES
Net (increase) decrease in loans		(94,812	)		3,446
Securities available-for-sale:
Proceeds from sales		560,676			3,155
Proceeds from maturities, prepayments and calls		52,783			53,631
Purchases of securities		(405,998	)		(77,725	)
Securities held-to-maturity:
Proceeds from maturities, prepayments and calls		9,430			12,325
Purchases of securities		(51,246	)		(12,240	)
Proceeds from bank-owned life insurance		1,185			—
Cash paid to acquire a business, net of cash acquired		(28,551	)		—
Purchases of premises and equipment - net		(2,033	)		(1,485	)
Net cash provided by (used in) investing activities		41,434			(18,893	)
FINANCING ACTIVITIES
Increase in deposits		120,954			153,387
Proceeds from Federal Home Loan Bank borrowings		325,000			—
Repayment of Federal Home Loan Bank borrowings		(507,982	)		(16,181	)
Decrease in other short-term borrowings		(9,060	)		(37,682	)
Decrease in federal funds purchased		—			(20,000	)
Dividends paid to common shareholders		(6,446	)		(5,833	)
Treasury shares (purchased) sold - net		(992	)		862
Net cash (used in) provided by financing activities		(78,526	)		74,553
Net (decrease) increase in cash and cash equivalents		(1,028	)		79,645
Cash and cash equivalents at beginning of the period		94,002			95,551
Cash and cash equivalents at end of the period	$	92,974		$	175,196
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	$	5,522		$	6,589
Income taxes paid		100			—
Transfers of loans to other real estate owned		344			1,287
Non-cash transactions related to ESB acquisition		301,933			—

See Notes to Consolidated Financial Statements.

6

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of presentation — The accompanying unaudited interim financial statements of WesBanco, Inc. and its consolidated subsidiaries (“WesBanco”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2014.

WesBanco’s interim financial statements have been prepared following the significant accounting policies disclosed in Note 1 of the Notes to the Consolidated Financial Statements of its 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission. In the opinion of management, the accompanying interim financial information reflects all adjustments, including normal recurring adjustments, necessary to present fairly WesBanco’s financial position and results of operations for each of the interim periods presented. Results of operations for interim periods are not necessarily indicative of the results of operations that may be expected for a full year.

Recent accounting pronouncements — In April 2015, the Financial Accounting Standards Board (the “FASB”) issued an Accounting Standards Update (“ASU”) (ASU 2015-05) that provides guidance on when to account for a cloud computing arrangement as a software license. The guidance applies only to internal-use software that a customer obtains access to in a hosting arrangement if both of the following criteria are met: (1) The customer has the contractual right to take possession of the software at any time during the hosting period without significant penalty, (2) it is feasible for the customer to either run the software on its own hardware or contract with another party unrelated to the vendor to host the software. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on WesBanco’s Consolidated Financial Statements.

In February 2015, the FASB issued ASU 2015-02 that revised the consolidation model, requiring reporting entities to reevaluate whether they should consolidate certain legal entities under the revised model. The amendments in this Update modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities, and eliminate the presumption that a general partner should consolidate and affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships. The pronouncement also provides for a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on WesBanco’s Consolidated Financial Statements.

In August 2014, the FASB issued ASU 2014-14 related to the classification of certain government-guaranteed mortgage loans upon foreclosure. The amendments in this update require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) The loan has a government guarantee that is not separable from the loan before foreclosure, (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based upon the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014 and may be adopted under either a modified retrospective transition method or a prospective transition method. However, the same method of transition as elected under ASU 2014-04 must be applied. Early adoption is permitted. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In June 2014, the FASB issued ASU 2014-11 related to repurchase-to-maturity transactions, repurchase financing and disclosures. The pronouncement changes the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowing accounting, which is consistent with the accounting for other repurchase agreements. The pronouncement also requires two new disclosures. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The second disclosure provides increased transparency about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. Early adoption is not permitted. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

        In May 2014, the FASB issued ASU 2014-09 related to the recognition of revenue from contracts with customers. The new revenue pronouncement creates a single source of revenue guidance for all companies in all industries and is more principles-based than current revenue guidance. The pronouncement provides a five-step model for a company to recognize revenue when it transfers control of goods or services to customers at an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services. The five steps are (1) identify the contract with the customer, (2) identify the separate performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the separate performance obligations and (5) recognize revenue when each performance obligation is satisfied. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016 using either a full retrospective approach for all periods presented in the period of adoption or a modified retrospective approach. Early adoption is not permitted. In April 2015, the FASB issued an exposure draft of a proposed ASU that would delay by one year the effective date of ASU 2014-11. Under the proposal, the standard would be effective for annual reporting periods beginning after December 15, 2017 and interim periods therein. WesBanco is currently evaluating the impact of the adoption of this pronouncement on its Consolidated Financial Statements.

7

NOTE 2. MERGERS AND ACQUISITIONS

On February 10, 2015, WesBanco completed its acquisition of ESB Financial Corporation (“ESB”), and its wholly-owned banking subsidiary, ESB Bank (“ESB Bank”), a Pennsylvania-chartered stock savings bank headquartered in Ellwood City, Pennsylvania. The transaction expanded WesBanco’s franchise in the Pittsburgh region of western Pennsylvania from 16 to 38 offices.

On the acquisition date, ESB had $1.9 billion in assets, excluding goodwill, which included $700.8 million in loans, and $486.9 million in securities. The ESB acquisition was valued at $339.0 million, based on WesBanco’s closing stock price on February 10, 2015 of $32.00, and resulted in WesBanco issuing 9,178,531 shares of its common stock and $45.0 million in cash and other assets in exchange for ESB common stock. The assets and liabilities of ESB were recorded on WesBanco’s balance sheet at their preliminary estimated fair values as of February 10, 2015, the acquisition date, and ESB’s results of operations have been included in WesBanco’s Consolidated Statements of Income since that date. ESB was merged into WesBanco and ESB Bank was merged into WesBanco Bank, Inc. (the “Bank”) on February 10, 2015. Based on a preliminary purchase price allocation, WesBanco recorded $168.9 million in goodwill and $5.3 million in core deposit intangibles in its community banking segment. The fair values for the assets acquired and liabilities assumed are provisional amounts and are currently under review. Due to the timing of the ESB acquisition, WesBanco is still in the process of completing its fair market valuation, including the valuation of certain tangible and intangible assets as well as deferred income taxes. None of the goodwill is deductible for income tax purposes as the acquisition is accounted for as a tax-free exchange for tax purposes.

For the three months ended March 31, 2015, WesBanco recorded merger-related expenses of $9.7 million associated with the ESB acquisition. In 2014 WesBanco recognized $1.3 million in merger-related expenses in connection with the ESB acquisition.

The total of net interest income and non-interest income of the acquired operations of ESB was approximately $6.5 million and net income was approximately $2.7 million from February 11, 2015 through March 31, 2015. If the ESB acquisition had occurred on January 1, 2014, unaudited proforma net interest income and non-interest income of the combined entity for the three months ended March 31, 2014 would have totaled approximately $76.1 million and unaudited proforma net income would have been approximately $19.8 million as compared to proforma results of $78.2 million and $22.2 million, respectively, for the three months ended March 31, 2015. Merger-related expenses were excluded from the pro-forma results.

The purchase price of the ESB acquisition and resulting goodwill is summarized as follows:

(unaudited, in thousands)	February 10, 2015
Purchase Price:
Fair value of WesBanco shares issued, (net of equity issuance costs of $0.1 million)	$	293,933
Cash consideration for outstanding ESB shares, options and restricted stock		37,036
Settlement of pre-existing loan to ESB		8,000
Total purchase price	$	338,969
Fair value of:
Tangible assets acquired	$	1,859,865
Core deposit and other intangible assets acquired		5,346
Liabilities assumed		(1,703,616	)
Net cash received in the acquisition		8,485
Fair value of net assets acquired		170,080
Goodwill recognized	$	168,889

The following table presents the preliminary allocation of the purchase price of the assets acquired and the liabilities assumed at the date of acquisition, as WesBanco intends to finalize its accounting for the acquisition of ESB during 2015:

(unaudited, in thousands)	February 10, 2015
Assets
Cash and due from banks	$	8,485
Securities		486,891
Loans		700,849
Goodwill and other intangible assets		174,235
Accrued income and other assets (1)		672,125
Total Assets	$	2,042,585
Liabilities
Deposits	$	1,246,992
Borrowings		433,454
Accrued expenses and other liabilities		23,170
Total liabilities		1,703,616
Purchase price	$	338,969

⁽¹⁾  Includes receivables of $560.7 million from the sale of available-for-sale securities prior to the acquisition date.

At March 31, 2015 the carrying value of goodwill increased by $168.9 million from December 31, 2014 to $481.0 million.

8

NOTE 3. EARNINGS PER COMMON SHARE

Earnings per common share are calculated as follows:

	For the Three Months Ended March 31,
(unaudited, in thousands, except shares and per share amounts)	2015		2014
Numerator for both basic and diluted earnings per common share:
Net income	$	13,887	$	16,421
Denominator:
Total average basic common shares outstanding		34,393,137		29,182,183
Effect of dilutive stock options and warrant		85,198		80,497
Total diluted average common shares outstanding		34,478,335		29,262,680
Earnings per common share - basic	$	0.40	$	0.56
Earnings per common share - diluted	$	0.40	$	0.56

All stock options outstanding were included in the computation of diluted earnings per share for the three months ended March 31, 2015 as all were considered dilutive, while 33,000 were not included in March 31, 2014, because to do so would have been anti-dilutive.

On February 10, 2015, WesBanco issued 9,178,531 shares to complete its acquisition of ESB. These shares are included in average shares outstanding beginning on that date. For additional information relating to the ESB acquisition, refer to Note 2, “Mergers and Acquisitions.”

9

NOTE 4. SECURITIES

The following table presents the fair value and amortized cost of available-for-sale and held-to-maturity securities:

	March 31, 2015									December 31, 2014
(unaudited, in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale
Obligations of government agencies	$	79,315	$	1,486	$	(33	)	$	80,768	$	86,964	$	1,087	$	(315	)	$	87,736
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,279,350		8,091		(3,996	)		1,283,445		703,535		4,336		(6,758	)		701,113
Obligations of states and political subdivisions		89,977		5,693		(17	)		95,653		86,073		5,365		(5	)		91,433
Corporate debt securities		182,781		430		(121	)		183,090		25,974		141		(119	)		25,996
Total debt securities	$	1,631,423	$	15,700	$	(4,167	)	$	1,642,956	$	902,546	$	10,929	$	(7,197	)	$	906,278
Equity securities		10,702		606		—			11,308		10,304		842		—			11,146
Total available-for-sale securities	$	1,642,125	$	16,306	$	(4,167	)	$	1,654,264	$	912,850	$	11,771	$	(7,197	)	$	917,424
Held-to-maturity
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies	$	126,935	$	3,244	$	(208	)	$	129,971	$	79,004	$	3,262	$	(246	)	$	82,020
Obligations of states and political subdivisions		610,249		26,560		(878	)		635,931		507,927		23,917		(1,043	)		530,801
Corporate debt securities		6,741		200		—			6,941		6,739		106		(49	)		6,796
Total held-to-maturity securities	$	743,925	$	30,004	$	(1,086	)	$	772,843	$	593,670	$	27,285	$	(1,338	)	$	619,617
Total securities	$	2,386,050	$	46,310	$	(5,253	)	$	2,427,107	$	1,506,520	$	39,056	$	(8,535	)	$	1,537,041

At March 31, 2015, and December 31, 2014, there were no holdings of any one issuer, other than the U.S. government and its agencies, in an amount greater than 10% of WesBanco’s shareholders’ equity.

The following table presents the fair value of available-for-sale and held-to-maturity securities by contractual maturity at March 31, 2015. In some instances, the issuers may have the right to call or prepay obligations without penalty prior to the contractual maturity date.

	March 31, 2015
(unaudited, in thousands)	One Year or less		One to Five Years		Five to Ten Years		After Ten Years		Mortgage-backed and Equity		Total
Available-for-sale
Obligations of government agencies	$	—	$	23,276	$	40,297	$	17,195	$	—	$	80,768
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies (1)		—		—		—		—		1,283,445		1,283,445
Obligations of states and political subdivisions		5,254		33,049		21,417		35,933		—		95,653
Corporate debt securities		82,193		62,312		33,658		4,927		—		183,090
Equity securities (2)		—		—		—		—		11,308		11,308
Total available-for-sale securities	$	87,447	$	118,637	$	95,372	$	58,055	$	1,294,753	$	1,654,264
Held-to-maturity (3)
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies (1)	$	—	$	—	$	—	$	—	$	129,971	$	129,971
Obligations of states and political subdivisions		2,852		17,024		259,231		356,824		—		635,931
Corporate debt securities		—		—		6,941		—		—		6,941
Total held-to-maturity securities	$	2,852	$	17,024	$	266,172	$	356,824	$	129,971	$	772,843
Total securities	$	90,299	$	135,661	$	361,544	$	414,879	$	1,424,724	$	2,427,107

⁽¹⁾ Mortgage-backed and collateralized mortgage securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.

⁽²⁾ Equity securities, which have no stated maturity, are not assigned a maturity category.

⁽³⁾  The held-to-maturity portfolio is carried at an amortized cost of $743.9 million.

10

Securities with aggregate fair values of $1.1 billion and $706.5 million at March 31, 2015 and December 31, 2014, respectively, were pledged as security for public and trust funds, and securities sold under agreements to repurchase. Proceeds from the sale of available-for-sale securities were $560.7 million, entirely due to the ESB portfolio restructuring, and $3.2 million for the three months ended March 31, 2015 and 2014, respectively. Net unrealized gains on available-for-sale securities included in accumulated other comprehensive income net of tax, as of March 31, 2015 and December 31, 2014 were $7.7 million and $2.9 million, respectively.

The following table presents the gross realized gains and losses on sales and calls of securities for the three months ended March 31, 2015 and 2014, respectively.

	For the Three Months Ended March 31,
(unaudited, in thousands)	2015			2014
Gross realized gains	$	24		$	195
Gross realized losses		(2	)		(185	)
Net realized gains (losses)	$	22		$	10

The following tables provide information on unrealized losses on investment securities that have been in an unrealized loss position for less than twelve months and twelve months or more as of March 31, 2015 and December 31, 2014:

	March 31, 2015
	Less than 12 months							12 months or more							Total
(unaudited, dollars in thousands)	Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities
Obligations of government agencies		17,953		(33	)		3		—		—			0		17,953		(33	)		3
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		260,103		(681	)		55		168,693		(3,523	)		32		428,796		(4,204	)		87
Obligations of states and political subdivisions		68,439		(450	)		79		20,777		(445	)		31		89,216		(895	)		110
Corporate debt securities		53,122		(113	)		16		1,978		(8	)		1		55,100		(121	)		17
Total temporarily impaired securities		399,617		(1,277	)		153		191,448		(3,976	)		64		591,065		(5,253	)		217
	December 31, 2014
	Less than 12 months							12 months or more							Total
(unaudited, dollars in thousands)	Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities
Obligations of government agencies	$	19,362	$	(77	)		5	$	19,757	$	(238	)		4	$	39,119	$	(315	)		9
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		78,786		(386	)		19		240,055		(6,618	)		43		318,841		(7,004	)		62
Obligations of states and political subdivisions		12,615		(96	)		15		61,548		(952	)		93		74,163		(1,048	)		108
Corporate debt securities		2,969		(31	)		1		4,573		(137	)		2		7,542		(168	)		3
Total temporarily impaired securities	$	113,732	$	(590	)		40	$	325,933	$	(7,945	)		142	$	439,665	$	(8,535	)		182

Unrealized losses on debt securities in the tables represent temporary fluctuations resulting from changes in market rates in relation to fixed yields. Unrealized losses in the available-for-sale portfolio are accounted for as an adjustment, net of taxes, to other comprehensive income in shareholders’ equity.

WesBanco does not believe the securities presented above are impaired due to reasons of credit quality, as there are no debt securities rated below investment grade and all are paying principal and interest according to their contractual terms. WesBanco does not intend to sell, nor is it more likely than not that it will be required to sell, loss position securities prior to recovery of their cost, and therefore, management believes the unrealized losses detailed above are temporary and no impairment loss relating to these securities has been recognized.

Securities that do not have readily determinable fair values and for which WesBanco does not exercise significant influence are carried at cost. Cost method investments consist primarily of FHLB of Pittsburgh and FHLB of Cincinnati stock totaling $20.9 million and $11.6 million at March 31, 2015 and December 31, 2014, respectively, and are included in other assets in the Consolidated Balance Sheets. Cost method investments are evaluated for impairment whenever events or circumstances suggest that their carrying value may not be recoverable.

11

NOTE 5. LOANS AND THE ALLOWANCE FOR CREDIT LOSSES

The recorded investment in loans is presented in the Consolidated Balance Sheets net of deferred loan fees and costs of $2.2 million and $2.4 million at March 31, 2015 and December 31, 2014, respectively.

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Commercial real estate:
Land and construction	$	288,075	$	262,643
Improved property		1,908,869		1,682,817
Total commercial real estate		2,196,944		1,945,460
Commercial and industrial		709,621		638,410
Residential real estate		1,239,163		928,770
Home equity		362,163		330,031
Consumer		365,830		244,095
Total portfolio loans		4,873,721		4,086,766
Loans held for sale		6,064		5,865
Total loans	$	4,879,785	$	4,092,631

The following tables summarize changes in the allowance for credit losses applicable to each category of the loan portfolio:

	Allowance for Credit Losses By Category For the Three Months Ended March 31, 2015 and 2014
(unaudited, in thousands)	Commercial Real Estate- Land and Construction			Commercial Real Estate- Improved Property			Commercial & Industrial			Residential Real Estate			Home Equity			Consumer			Deposit Overdraft			Total
Balance at December 31, 2014:
Allowance for loan losses	$	5,654		$	17,573		$	9,063		$	5,382		$	2,329		$	4,078		$	575		$	44,654
Allowance for loan commitments		194			10			112			9			90			40			—			455
Total beginning allowance for credit losses		5,848			17,583			9,175			5,391			2,419			4,118			575			45,109
Provision for credit losses:
Provision for loan losses		(323	)		903			(44	)		(208	)		747			133			58			1,266
Provision for loan commitments		(16	)		8			8			4			17			2			—			23
Total provision for credit losses		(339	)		911			(36	)		(204	)		764			135			58			1,289
Charge-offs		—			(577	)		(122	)		(358	)		(589	)		(717	)		(154	)		(2,517	)
Recoveries		—			136			114			218			10			229			63			770
Net charge-offs		—			(441	)		(8	)		(140	)		(579	)		(488	)		(91	)		(1,747	)
Balance at March 31, 2015:
Allowance for loan losses		5,331			18,035			9,011			5,034			2,497			3,723			542			44,173
Allowance for loan commitments		178			18			120			13			107			42			—			478
Total ending allowance for credit losses	$	5,509		$	18,053		$	9,131		$	5,047		$	2,604		$	3,765		$	542		$	44,651
Balance at December 31, 2013:
Allowance for loan losses	$	6,056		$	18,157		$	9,925		$	5,673		$	2,017		$	5,020		$	520		$	47,368
Allowance for loan commitments		301			62			130			5			85			19			—			602
Total beginning allowance for credit losses		6,357			18,219			10,055			5,678			2,102			5,039			520			47,970
Provision for credit losses:
Provision for loan losses		(1,051	)		(509	)		2,128			869			153			305			361			2,256
Provision for loan commitments		(8	)		(53	)		3			—			1			—			—			(57	)
Total provision for credit losses		(1,059	)		(562	)		2,131			869			154			305			361			2,199
Charge-offs		—			(493	)		(2,276	)		(879	)		(155	)		(752	)		(180	)		(4,735	)
Recoveries		—			120			65			109			11			227			62			594
Net charge-offs		—			(373	)		(2,211	)		(770	)		(144	)		(525	)		(118	)		(4,141	)
Balance at March 31, 2014:
Allowance for loan losses		5,005			17,275			9,842			5,772			2,026			4,800			763			45,483
Allowance for loan commitments		293			9			133			5			86			19			—			545
Total ending allowance for credit losses	$	5,298		$	17,284		$	9,975		$	5,777		$	2,112		$	4,819		$	763		$	46,028

12

The following tables present the allowance for credit losses and recorded investments in loans by category:

	Allowance for Credit Losses and Recorded Investment in Loans
(unaudited, in thousands)	Commercial Real Estate- Land and Construction		Commercial Real Estate- Improved Property		Commercial and Industrial		Residential Real Estate		Home Equity		Consumer		Over-draft		Total
March 31, 2015
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	2,828	$	873	$	—	$	—	$	—	$	—	$	3,701
Allowance for loans collectively evaluated for impairment		5,331		15,207		8,138		5,034		2,497		3,723		542		40,472
Allowance for loan commitments		178		18		120		13		107		42		—		478
Total allowance for credit losses	$	5,509	$	18,053	$	9,131	$	5,047	$	2,604	$	3,765	$	542	$	44,651
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	9,822	$	2,722	$	—	$	—	$	—	$	—	$	12,544
Collectively evaluated for impairment		288,075		1,899,047		706,899		1,239,163		362,163		365,830		—		4,861,177
Total portfolio loans	$	288,075	$	1,908,869	$	709,621	$	1,239,163	$	362,163	$	365,830	$	—	$	4,873,721
December 31, 2014
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	2,765	$	1,033	$	—	$	—	$	—	$	—	$	3,798
Allowance for loans collectively evaluated for impairment		5,654		14,808		8,030		5,382		2,329		4,078		575		40,856
Allowance for loan commitments		194		10		112		9		90		40		—		455
Total allowance for credit losses	$	5,848	$	17,583	$	9,175	$	5,391	$	2,419	$	4,118	$	575	$	45,109
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	11,469	$	2,844	$	—	$	—	$	—	$	—	$	14,313
Collectively evaluated for impairment		262,643		1,671,348		635,566		928,770		330,031		244,095		—		4,072,453
Total portfolio loans	$	262,643	$	1,682,817	$	638,410	$	928,770	$	330,031	$	244,095	$	—	$	4,086,766

⁽¹⁾  Commercial loans greater than $1 million that are reported as non-accrual or as a troubled debt restructuring (“TDR”) are individually evaluated for impairment.

        WesBanco maintains an internal loan grading system to reflect the credit quality of commercial loans. Commercial loan risk grades are determined based on an evaluation of the relevant characteristics of each loan, assigned at the inception of each loan and adjusted thereafter at any time to reflect changes in the risk profile throughout the life of each loan. The primary factors used to determine the risk grade are the reliability and sustainability of the primary source of repayment and overall financial strength of the borrower. This includes an analysis of cash flow available to repay debt, profitability, liquidity, leverage, and overall financial trends. Other factors include management, industry or property type risks, an assessment of secondary sources of repayment such as collateral or guarantees, other terms and conditions of the loan that may increase or reduce its risk, and economic conditions and other external factors that may influence repayment capacity and financial condition.

Commercial real estate — land and construction consists of loans to finance investments in vacant land, land development, construction of residential housing, and construction of commercial buildings. Commercial real estate – improved property consists of loans for the purchase or refinance of all types of improved owner-occupied and investment properties. Factors that are considered in assigning the risk grade vary depending on the type of property financed. The risk grade assigned to construction and development loans is based on the overall viability of the project, the experience and financial capacity of the developer or builder to successfully complete the project, project specific and market absorption rates and comparable property values, and the amount of pre-sales for residential housing construction or pre-leases for commercial investment property. The risk grade assigned to commercial investment property loans is based primarily on the adequacy of net rental income generated by the property to service the debt, the type, quality, industry and mix of tenants, and the terms of leases, but also considers the overall financial capacity of the investors and their experience in owning and managing investment property. The risk grade assigned to owner-occupied commercial real estate and commercial and industrial loans is based primarily on historical and projected earnings, the adequacy of operating cash flow to service all of the business’ debt, and the capital resources, liquidity and leverage of the business, but also considers the industry in which the business operates, the business’ specific competitive advantages or disadvantages, the quality and experience of management, and external influences on the business such as economic conditions. Other factors that are considered for commercial and industrial loans include the type, quality and marketability of non-real estate collateral and whether the structure of the loan increases or reduces its risk. The type, age, condition, location and any environmental risks associated with a property are also considered for all types of commercial real estate. The overall financial condition and repayment capacity of any guarantors is also evaluated to determine the extent to which they mitigate other risks of the loan. The following descriptions of risk grades apply to commercial real estate and commercial and industrial loans:

Pass loans are those that exhibit a history of positive financial results that are at least comparable to the average for their industry or type of real estate. The primary source of repayment is acceptable and these loans are expected to perform satisfactorily during most economic cycles. Pass loans typically have no significant external factors that are expected to adversely affect these borrowers more than others in the same industry or property type. Any minor unfavorable characteristics of these loans are outweighed or mitigated by other positive factors including but not limited to adequate secondary or tertiary sources of repayment.

Criticized or compromised loans are currently protected but have weaknesses, which, if not corrected, may inadequately protect the Bank at some future date. These loans represent an unwarranted credit risk and would generally not be extended in the normal course of lending. Specific issues which may warrant this grade include declining financial results, increased reliance on secondary sources of repayment or guarantor support and adverse external influences that may negatively impact the business or property.

13

Substandard and doubtful loans are equivalent to the classifications used by banking regulators. Substandard loans are inadequately protected by the current repayment capacity and equity of the borrower or collateral pledged, if any. Substandard loans have one or more well-defined weaknesses that jeopardize their repayment or collection in full. These loans may or may not be reported as non-accrual. Doubtful loans have all the weaknesses inherent to a substandard loan with the added characteristic that full repayment is highly questionable or improbable on the basis of currently existing facts, conditions and collateral values. However, recognition of loss may be deferred if there are reasonably specific pending factors that will reduce the risk if they occur.

The following tables summarize commercial loans by their assigned risk grade:

	Commerical Loans by Internally Assigned Risk Grade
(unaudited, in thousands)	Commercial Real Estate- Land and Construction		Commercial Real Estate- Improved Property		Commercial & Industrial		Total Commercial Loans
As of March 31, 2015
Pass	$	281,730	$	1,848,655	$	683,226	$	2,813,611
Criticized - compromised		3,653		18,049		18,957		40,659
Classified - substandard		2,692		42,165		7,438		52,295
Classified - doubtful		—		—		—		—
Total	$	288,075	$	1,908,869	$	709,621	$	2,906,565
As of December 31, 2014
Pass	$	257,218	$	1,627,771	$	617,742	$	2,502,731
Criticized - compromised		3,645		17,873		12,770		34,288
Classified - substandard		1,780		37,173		7,898		46,851
Classified - doubtful		—		—		—		—
Total	$	262,643	$	1,682,817	$	638,410	$	2,583,870

Residential real estate, home equity and consumer loans are not assigned internal risk grades other than as required by regulatory guidelines that are based primarily on the age of past due loans. WesBanco primarily evaluates the credit quality of residential real estate, home equity and consumer loans based on repayment performance and historical loss rates. The aggregate amount of residential real estate, home equity and consumer loans classified as substandard in accordance with regulatory guidelines were $15.5 million at March 31, 2015 and $15.2 million at December 31, 2014, of which $1.5 and $2.2 million were accruing, for each period, respectively. The aggregate amount of residential real estate, home equity and consumer loans classified as substandard are not included in the tables above.

14

Acquired Loans — Loans acquired in connection with acquisitions are recorded at their acquisition-date fair value in accordance with ASC 805, Business Combinations, with no carryover of related allowance for credit losses. Determining the fair value of the acquired loans involves estimating the principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. Management considers a number of factors in evaluating the acquisition-date fair value including the remaining life of the acquired loans, delinquency status, estimated prepayments, payment options and other loan features, internal risk grade, estimated value of the underlying collateral and interest rate environment.

Loans acquired with deteriorated credit quality are accounted for in accordance with ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality (ASC 310-30), and therefore impaired if, at acquisition, the loans have evidence of credit quality deterioration since origination and it is probable that all contractually required payments will not be collected. At acquisition, WesBanco considers several factors as indicators that an acquired loan has evidence of deterioration in credit quality. These factors include loans 90 days or more past due, loans with an internal risk grade of substandard or below, loans classified as non-accrual by the acquired institution, and loans that have been previously modified as a TDR.

Acquired loans that were not individually determined to be impaired are considered performing and are accounted for in accordance with ASC 310-20, Nonrefundable Fees and Other Costs (ASC 310-20), whereby the premium or discount derived from the fair market value adjustment, on a loan-by-loan or pooled basis, is recognized into interest income on a level yield over the remaining expected life of the loan or pool.

Under the ASC 310-30 model, the excess of cash flows expected to be collected at acquisition over recorded fair value is referred to as the accretable yield and is the interest component of expected cash flow. The accretable yield is recognized into income over the remaining life of the loan if the timing and/or amount of cash flows expected to be collected can be reasonably estimated. If the timing or amount of cash flows expected to be collected cannot be reasonably estimated, the cost recovery method of income recognition is used. The difference between the loan’s total scheduled principal and interest payments over all cash flows expected to be collected at acquisition, considering the impact of prepayments, is referred to as the non-accretable difference. The non-accretable difference represents contractually required principal and interest payments which WesBanco does not expect to collect.

Over the life of the loan, management continues to estimate cash flows expected to be collected. Decreases in expected cash flows are recognized as impairments through a charge to the provision for loan losses resulting in an increase in the allowance for loan losses. Subsequent improvements in cash flows result in first, reversal of existing valuation allowances recognized subsequent to acquisition, if any, and next, an increase in the amount of accretable yield to be subsequently recognized in interest income on a prospective basis over the loan’s remaining life.

In conjunction with the ESB acquisition, WesBanco acquired loans with a book value of $716.1 million. These loans were recorded at their fair value of $700.8 million, with $691.1 million categorized as performing. The fair market value adjustment on performing loans of $9.0 million at acquisition date is expected to be recognized into interest income on a level yield over the remaining expected life of the performing loans. Loans acquired with deteriorated credit quality with a book value of $16.0 million were recorded at their estimated fair value of $9.7 million. The accretable yield on the acquired impaired loans is estimated at $2.4 million, while the non-accretable difference is estimated at $3.9 million. The balance of these loans acquired with deteriorated credit quality at March 31, 2015, was $9.3 million, of which $3.6 million were categorized as non-accrual and $5.7 million were categorized as accruing TDRs.

15

The following tables summarize the age analysis of all categories of loans:

	Age Analysis of Loans
(unaudited, in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Total Loans		90 Days or More Past Due and Accruing (1)
As of March 31, 2015
Commercial real estate:
Land and construction	$	286,883	$	—	$	—	$	1,192	$	1,192	$	288,075	$	—
Improved property		1,889,451		1,093		1,435		16,890		19,418		1,908,869		—
Total commercial real estate		2,176,334		1,093		1,435		18,082		20,610		2,196,944		—
Commercial and industrial		705,380		916		1,518		1,807		4,241		709,621		3
Residential real estate		1,226,131		4,981		1,673		6,378		13,032		1,239,163		74
Home equity		357,545		1,982		508		2,128		4,618		362,163		684
Consumer		362,338		2,117		868		507		3,492		365,830		270
Total portfolio loans		4,827,728		11,089		6,002		28,902		45,993		4,873,721		1,031
Loans held for sale		6,064		—		—		—		—		6,064		—
Total loans	$	4,833,792	$	11,089	$	6,002	$	28,902	$	45,993	$	4,879,785	$	1,031
Impaired loans included above are as follows:
Non-accrual loans	$	9,209	$	2,008	$	2,319	$	27,838	$	32,165	$	41,374
TDRs accruing interest (1)		16,536		582		179		33		794		17,330
Total impaired	$	25,745	$	2,590	$	2,498	$	27,871	$	32,959	$	58,704
As of December 31, 2014
Commercial real estate:
Land and construction	$	261,356	$	20	$	—	$	1,267	$	1,287	$	262,643	$	71
Improved property		1,665,363		961		4,772		11,721		17,454		1,682,817		—
Total commercial real estate		1,926,719		981		4,772		12,988		18,741		1,945,460		71
Commercial and industrial		634,482		1,834		240		1,854		3,928		638,410		22
Residential real estate		915,968		1,237		3,384		8,181		12,802		928,770		1,306
Home equity		325,291		1,877		895		1,968		4,740		330,031		570
Consumer		240,365		2,571		685		474		3,730		244,095		319
Total portfolio loans		4,042,825		8,500		9,976		25,465		43,941		4,086,766		2,288
Loans held for sale		5,865		—		—		—		—		5,865		—
Total loans	$	4,048,690	$	8,500	$	9,976	$	25,465	$	43,941	$	4,092,631	$	2,288
Impaired loans included above are as follows:
Non-accrual loans	$	7,562	$	2,884	$	5,552	$	22,820	$	31,256	$	38,818
TDRs accruing interest (1)		11,016		151		542		357		1,050		12,066
Total impaired	$	18,578	$	3,035	$	6,094	$	23,177	$	32,306	$	50,884

⁽¹⁾ Loans 90 days or more past due and accruing interest exclude TDRs 90 days or more past due and accruing interest.

Impaired Loans — A loan is considered impaired, based on current information and events, if it is probable that WesBanco will be unable to collect the payments of principal and interest when due according to the contractual terms of the loan agreement. Impaired loans generally included all non-accrual loans and TDRs.

Loans are generally placed on non-accrual when they are 90 days past due unless the loan is well-secured and in the process of collection. Loans may also be placed on non-accrual when full collection of principal is in doubt even if payments on such loans remain current, or may remain on non-accrual if they were past due but subsequently brought current.

Loans are categorized as TDRs when the Bank, for economic or legal reasons related to a borrower’s financial difficulties, grants a concession to the borrower that it would not otherwise consider.

Acquired loans that have experienced a deterioration of credit quality from origination to acquisition for which it is probable that WesBanco will be unable to collect all contractually required payments receivable, including both principal and interest, are considered impaired.

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The following tables summarize impaired loans:

	Impaired Loans
	March 31, 2015						December 31, 2014
(unaudited, in thousands)	Unpaid Principal Balance (1)		Recorded Investment		Related Allowance		Unpaid Principal Balance (1)		Recorded Investment		Related Allowance
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	3,101	$	2,476	$	—	$	1,588	$	1,488	$	—
Improved property		30,138		22,481		—		16,480		14,684		—
Commercial and industrial		3,094		2,432		—		3,152		2,597		—
Residential real estate		20,943		19,132		—		20,077		18,544		—
Home equity		2,824		2,617		—		2,890		2,663		—
Consumer		1,659		1,332		—		1,287		1,086		—
Total impaired loans without a specific allowance		61,759		50,470		—		45,474		41,062		—
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—
Improved property		6,466		6,466		2,828		7,980		7,980		2,765
Commercial and industrial		1,768		1,768		873		1,842		1,842		1,033
Total impaired loans with a specific allowance		8,234		8,234		3,701		9,822		9,822		3,798
Total impaired loans	$	69,993	$	58,704	$	3,701	$	55,296	$	50,884	$	3,798

⁽¹⁾ The difference between the unpaid principal balance and the recorded investment generally reflects amounts that have been previously charged-off and fair market value adjustments on acquired impaired loans.

	Impaired Loans
	For the Three Months Ended March 31, 2015				For the Three Months Ended March 31, 2014
(unaudited, in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	2,128	$	16	$	2,450	$	2
Improved property		18,932		223		19,158		20
Commercial and industrial		2,513		13		3,532		32
Residential real estate		18,715		230		19,463		182
Home equity		2,641		20		2,367		19
Consumer		1,194		20		1,174		28
Total impaired loans without a specific allowance		46,123		522		48,144		283
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—
Improved property		7,223		—		729		1
Commercial and industrial		1,805		19		2,329		12
Total impaired loans with a specific allowance		9,028		19		3,058		13
Total impaired loans	$	55,151	$	541	$	51,202	$	296

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The following tables present the recorded investment in non-accrual loans and TDRs:

	Non-accrual Loans (1)
(unaudited, in thousands)	March 31, 2015		December 31, 2014
Commercial real estate:
Land and construction	$	1,463	$	1,488
Improved property		22,143		20,227
Total commercial real estate		23,606		21,715
Commercial and industrial		3,849		4,110
Residential real estate		11,249		10,329
Home equity		1,899		1,923
Consumer		771		741
Total	$	41,374	$	38,818

⁽¹⁾  Total non-accrual loans include loans that are also restructured. Such loans are also set forth in the following table as non-accrual TDRs.

	TDRs
	March 31, 2015						December 31, 2014
(unaudited, in thousands)	Accruing		Non-Accrual		Total		Accruing		Non-Accrual		Total
Commercial real estate:
Land and construction	$	1,013	$	504	$	1,517	$	—	$	464	$	464
Improved property		6,804		5,399		12,203		2,437		1,850		4,287
Total commercial real estate		7,817		5,903		13,720		2,437		2,314		4,751
Commercial and industrial		351		376		727		329		478		807
Residential real estate		7,883		2,386		10,269		8,215		2,074		10,289
Home equity		718		285		1,003		740		245		985
Consumer		561		274		835		345		309		654
Total	$	17,330	$	9,224	$	26,554	$	12,066	$	5,420	$	17,486

As of March 31, 2015, there were three TDRs greater than $1.0 million. The concessions granted in the majority of loans reported as accruing and non-accrual TDRs are extensions of the maturity date or the amortization period, reductions in the interest rate below the prevailing market rate for loans with comparable characteristics, and/or permitting interest-only payments for longer than three months.

The following table presents details related to loans identified as TDRs during the three months ended March 31, 2015 and 2014, respectively:

	New TDRs (1) For the Three Months Ended
	March 31, 2015						March 31, 2014
(unaudited, dollars in thousands)	Number of Modifications		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment		Number of Modifications		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Land and construction		11	$	1,414	$	1,056		—	$	—	$	—
Improved Property		7		8,568		8,289		1		91		90
Total commercial real estate		18		9,982		9,345		1		91		90
Commercial and industrial		2		42		57		—		—		—
Residential real estate		7		424		421		4		121		118
Home equity		1		7		6		—		—		—
Consumer		21		269		303		2		33		31
Total		49	$	10,724	$	10,132		7	$	245	$	239

⁽¹⁾  Excludes loans that were either paid off or charged-off by period end. The pre-modification balance represents the balance outstanding at the beginning of the period. The post-modification balance represents the outstanding balance at period end.

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The following table summarizes TDRs which defaulted (defined as past due 90 days) during the three months ended March 31, 2015 and 2014, respectively, that were restructured within the last twelve months prior to March 31, 2015 and 2014, respectively:

	Defaulted TDRs (1) For the Three Months Ended				Defaulted TDRs (1) For the Three Months Ended
	March 31, 2015				March 31, 2014
(unaudited, dollars in thousands)	Number of Defaults		Recorded Investment		Number of Defaults		Recorded Investment
Commercial real estate:
Land and construction		—	$	—		—	$	—
Improved property		—		—		—		—
Total commercial real estate		—		—		—		—
Commercial and industrial		—		—		—		—
Residential real estate		—		—		8		481
Home equity		1		42		1		3
Consumer		1		27		—		—
Total		2	$	69		9	$	484

⁽¹⁾  Excludes loans that were either charged-off or cured by period end. The recorded investment is as of March 31, 2014 and 2013, respectively.

TDRs that defaulted during the three month period that were restructured within the last twelve months represented 0.3% of the total TDR balance at March 31, 2015. These loans are placed on non-accrual status unless they are both well-secured and in the process of collection. At March 31, 2015, none of the loans in the table above were accruing interest.

The following table summarizes other real estate owned and repossessed assets included in other assets:

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Other real estate owned	$	5,886	$	4,920
Repossessed assets		340		162
Total other real estate owned and repossessed assets	$	6,226	$	5,082

Residential real estate included in other real estate owned at March 31, 2015 and December 31, 2014 was $0.8 million and $0.6 million, respectively. At March 31, 2015, formal foreclosure proceedings were in process on residential real estate loans totaling $4.3 million.

NOTE 6. PENSION PLAN

The following table presents the net periodic pension cost for WesBanco’s Defined Benefit Pension Plan (the “Plan”) and the related components:

	For the Three Months Ended March 31,
(unaudited, in thousands)	2015			2014
Service cost - benefits earned during year	$	827		$	717
Interest cost on projected benefit obligation		1,201			1,170
Expected return on plan assets		(1,907	)		(1,783	)
Amortization of prior service cost		6			11
Amortization of net loss		784			363
Net periodic pension cost	$	911		$	478

The Plan covers all employees of WesBanco and its subsidiaries who were hired on or before August 1, 2007 who satisfy minimum age and length of service requirements, and is not available to employees hired after such date.

A minimum required contribution of $3.1 million is due for 2015 which could be all or partially offset by the Plan’s $34.9 million available credit balance. WesBanco expects to make a voluntary contribution of $7.5 million to the Plan in 2015.

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NOTE 7. FAIR VALUE MEASUREMENT

Fair value estimates are based on quoted market prices, if available, quoted market prices of similar assets or liabilities, or the present value of expected future cash flows and other valuation techniques. These valuations are significantly affected by discount rates, cash flow assumptions, and risk assumptions used. Therefore, fair value estimates may not be substantiated by comparison to independent markets and are not intended to reflect the proceeds that may be realizable in an immediate settlement of the instruments.

Fair value is determined at one point in time and is not representative of future value. These amounts do not reflect the total value of a going concern organization. Management does not have the intention to dispose of a significant portion of its assets and liabilities and therefore, the unrealized gains or losses should not be interpreted as a forecast of future earnings and cash flows.

The following is a discussion of assets and liabilities measured at fair value on a recurring basis and valuation techniques applied:

Securities available-for-sale: The fair value of securities available-for-sale which are measured on a recurring basis are determined primarily by obtaining quoted prices on nationally recognized securities exchanges or matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other similar securities. These securities are classified within level 1 or 2 in the fair value hierarchy. Certain equity securities that are lightly traded in over-the-counter markets are classified as level 2 in the fair value hierarchy, as quoted market prices may not be available on the fair value measurement date. Positions that are not traded in active markets for which valuations are generated using assumptions not observable in the market or management’s best estimate are classified within level 3 of the fair value hierarchy. This includes certain specific municipal debt issues for which the credit quality and discount rate must be estimated.

We may be required from time to time to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower of cost or market accounting or write-downs of individual assets.

Impaired loans: Impaired loans are carried at the lower of cost or the fair value of the collateral for collateral-dependent loans. Collateral may be in the form of real estate or business assets including equipment, inventory and accounts receivable. The use of independent appraisals, discounted cash flow models and management’s best judgment are significant inputs in arriving at the fair value measure of the underlying collateral and impaired loans are therefore classified within level 3 of the fair value hierarchy.

Other real estate owned and repossessed assets: Other real estate owned and repossessed assets are carried at the lower of the investment in the assets or the fair value of the assets less estimated selling costs. The use of independent appraisals and management’s best judgment are significant inputs in arriving at the fair value measure of the underlying collateral, and therefore other real estate owned and repossessed assets are classified within level 3 of the fair value hierarchy.

Loans held for sale: Loans held for sale are carried, in aggregate, at the lower of cost or fair value. The use of a valuation model using quoted prices of similar instruments are significant inputs in arriving at the fair value and therefore loans held for sale are classified within level 2 of the fair value hierarchy.

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The following tables set forth WesBanco’s financial assets and liabilities that were accounted for at fair value on a recurring and nonrecurring basis by level within the fair value hierarchy as of March 31, 2015 and December 31, 2014:

			March 31, 2015
			Fair Value Measurements Using:
(unaudited, in thousands)	March 31, 2015		Quoted Prices in Active Markets for Identical Assets (level  1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Recurring fair value measurements
Securities - available-for-sale
Obligations of government agencies	$	80,768	$	—	$	80,768	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,283,445		—		1,283,445		—
Obligations of state and political subdivisions		95,653		—		95,653		—
Corporate debt securities		183,090		—		183,090		—
Equity securities		11,308		8,538		2,770		—
Total securities - available-for-sale	$	1,654,264	$	8,538	$	1,645,726	$	—
Total recurring fair value measurements	$	1,654,264	$	8,538	$	1,645,726	$	—
Nonrecurring fair value measurements
Impaired loans	$	4,533	$	—	$	—	$	4,533
Other real estate owned and repossessed assets		6,226		—		—		6,226
Loans held for sale		6,064		—		6,064		—
Total nonrecurring fair value measurements	$	16,823	$	—	$	6,064	$	10,759
			December 31, 2014
			Fair Value Measurements Using:
(unaudited, in thousands)	December 31, 2014		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Recurring fair value measurements
Securities - available-for-sale
Obligations of government agencies	$	87,736	$	—	$	87,736	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		701,113		—		701,113		—
Obligations of state and political subdivisions		91,433		—		91,433		—
Corporate debt securities		25,996		—		25,996		—
Equity securities		11,146		8,440		2,706		—
Total securities - available-for-sale	$	917,424	$	8,440	$	908,984	$	—
Total recurring fair value measurements	$	917,424	$	8,440	$	908,984	$	—
Nonrecurring fair value measurements
Impaired loans	$	6,024	$	—	$	—	$	6,024
Other real estate owned and repossessed assets		5,082		—		—		5,082
Loans held for sale		5,865		—		5,865		—
Total nonrecurring fair value measurements	$	16,971	$	—	$	5,865	$	11,106

WesBanco’s policy is to recognize transfers between levels as of the actual date of the event or change in circumstances that caused the transfer. There were no transfers between level 1, 2 or 3 for the three months ended March 31, 2015 or 2014.

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The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which WesBanco has utilized level 3 inputs to determine fair value:

	Quantitative Information about Level 3 Fair Value Measurements
(unaudited, in thousands)	Fair Value Estimate		Valuation Techniques	Unobservable Input	Range (Weighted Average)
March 31, 2015:
Impaired loans	$	4,533	Appraisal of collateral (1)	Appraisal adjustments (2)	0% to (38.5%) / (6.9%)
				Liquidation expenses (2)	(3.1%) to (8.0%) / (7.4%)
Other real estate owned and repossessed assets		6,226	Appraisal of collateral (1), (3)
December 31, 2014:
Impaired loans	$	6,024	Appraisal of collateral (1)	Appraisal adjustments (2)	0% to (39.7%) / (6.7%)
				Liquidation expenses (2)	(1.2%) to (8.0%) / (6.7%)
Other real estate owned and repossessed assets		5,082	Appraisal of collateral (1), (3)

⁽¹⁾ Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.

⁽²⁾  Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of appraisal adjustments and liquidation expenses are presented as a percent of the appraisal.

⁽³⁾  Includes estimated liquidation expenses and numerous dissimilar qualitative adjustments by management which are not identifiable.

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The estimated fair values of WesBanco’s financial instruments are summarized below:

					Fair Value Measurements at March 31, 2015
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Financial Assets
Cash and due from banks	$	92,974	$	92,974	$	92,974	$	—	$	—
Securities available-for-sale		1,654,264		1,654,264		8,538		1,645,726		—
Securities held-to-maturity		743,925		772,843		—		772,088		755
Net loans		4,829,548		4,820,779		—		—		4,820,779
Loans held for sale		6,064		6,064		—		6,064		—
Accrued interest receivable		25,232		25,232		25,232		—		—
Bank-owned life insurance		153,991		153,991		153,991		—		—
Financial Liabilities
Deposits		6,416,202		6,423,499		4,532,314		1,891,185		—
Federal Home Loan Bank borrowings		432,456		435,089		—		435,089		—
Other borrowings		76,630		76,621		73,589		3,032		—
Junior subordinated debt		142,269		116,070		—		116,070		—
Accrued interest payable		2,297		2,297		2,297		—		—
					Fair Value Measurements at December 31, 2014
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Financial Assets
Cash and due from banks	$	94,002	$	94,002	$	94,002	$	—	$	—
Securities available-for-sale		917,424		917,424		8,440		908,984		—
Securities held-to-maturity		593,670		619,617		—		618,895		722
Net loans		4,042,112		4,047,648		—		—		4,047,648
Loans held for sale		5,865		5,865		—		5,865		—
Accrued interest receivable		18,481		18,481		18,481		—		—
Bank-owned life insurance		123,298		123,298		123,298		—		—
Financial Liabilities
Deposits		5,048,983		5,056,828		3,743,887		1,312,941		—
Federal Home Loan Bank borrowings		223,126		225,456		—		225,456		—
Other borrowings		80,690		80,696		77,534		3,162		—
Junior subordinated debt		106,176		79,212		—		79,212		—
Accrued interest payable		1,620		1,620		1,620		—		—

The following methods and assumptions were used to measure the fair value of financial instruments recorded at cost on WesBanco’s consolidated balance sheets:

Cash and due from banks: The carrying amount for cash and due from banks is a reasonable estimate of fair value.

Securities held-to-maturity: Fair values for securities held-to-maturity are determined in the same manner as securities available-for-sale which is described above.

Net loans: Fair values for loans are estimated using a discounted cash flow methodology. The discount rates take into account interest rates currently being offered to customers for loans with similar terms, the credit risk associated with the loan and other market factors, including liquidity. The valuation of the loan portfolio reflects discounts that WesBanco believes are consistent with transactions occurring in the marketplace for both performing and distressed loan types. The carrying value that fair value is compared to is net of the allowance for loan losses and other associated premiums and discounts. Due to the significant judgment involved in evaluating credit quality, loans are classified within level 3 of the fair value hierarchy.

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Accrued interest receivable: The carrying amount of accrued interest receivable approximates its fair value.

Bank-owned life insurance: The carrying value of bank-owned life insurance represents the net cash surrender value of the underlying insurance policies, should these policies be terminated. Management believes that the carrying value approximates its fair value.

Deposits: The carrying amount is considered a reasonable estimate of fair value for demand, savings and other variable rate deposit accounts. The fair value of fixed maturity certificates of deposit is estimated by a discounted cash flow method using rates currently offered for deposits of similar remaining maturities.

Federal Home Loan Bank borrowings: The fair value of FHLB borrowings is based on rates currently available to WesBanco for borrowings with similar terms and remaining maturities.

Other borrowings: The carrying amount of federal funds purchased and overnight sweep accounts generally approximate fair value. Other repurchase agreements are based on quoted market prices if available. If market prices are not available, for certain fixed and adjustable rate repurchase agreements, then quoted market prices of similar instruments are used.

Junior subordinated debt owed to unconsolidated subsidiary trusts: Due to the pooled nature of these instruments, which are not actively traded, estimated fair value is based on recent similar transactions of single-issuer trust preferred securities.

Accrued interest payable: The carrying amount of accrued interest payable approximates its fair value.

Off-balance sheet financial instruments: Off-balance sheet financial instruments consist of commitments to extend credit, including letters of credit. Fair values for commitments to extend credit are estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present credit standing of the counterparties. The estimated fair value of the commitments to extend credit and letters of credit are insignificant and therefore are not presented in the above tables.

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NOTE 8. COMPREHENSIVE INCOME

The activity in accumulated other comprehensive income for the three months ended March 31, 2015 and 2014 is as follows:

	Accumulated Other Comprehensive Income (1)
(unaudited, in thousands)	Defined Benefit Pension Plan			Unrealized Gains (Losses) on Securities Available-for-Sale			Unrealized Gains on Securities Transferred from Available-for- Sale to Held-to-Maturity			Total
Balance at December 31, 2014	$	(22,776	)	$	2,892		$	1,059		$	(18,825	)
Other comprehensive income before reclassifications		—			4,804			—			4,804
Amounts reclassified from accumulated other comprehensive income		475			(11	)		(67	)		397
Period change		475			4,793			(67	)		5,201
Balance at March 31, 2015	$	(22,301	)	$	7,685		$	992		$	(13,624	)
Balance at December 31, 2013	$	(7,966	)	$	(6,126	)	$	1,358		$	(12,734	)
Other comprehensive income before reclassifications		—			3,075			—			3,075
Amounts reclassified from accumulated other comprehensive income		236			49			(87	)		198
Period change		236			3,124			(87	)		3,273
Balance at March 31, 2014	$	(7,730	)	$	(3,002	)	$	1,271		$	(9,461	)

⁽¹⁾  All amounts are net of tax. Related income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 37%.

The following table provides details about amounts reclassified from accumulated other comprehensive income for the three months ended March 31, 2015 and 2014:

Details about Accumulated Other Comprehensive Income/(Loss) Components	Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) For the Three Months Ended March 31,						Affected Line Item in the Statement of Net Income
(unaudited, in thousands)	2015			2014
Securities available-for-sale (1):
Net securities (gains) losses reclassified into earnings		(18	)	$	78		Net securities gains (Non-interest income)
Related income tax expense (benefit)		7			(29	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(11	)		49
Securities held-to-maturity (1):
Amortization of unrealized gain transferred from available-for-sale		(107	)		(138	)	Interest and dividends on securities (Interest and dividend income)
Related income tax expense		40			51		Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(67	)		(87	)
Defined benefit pension plan (2):
Amortization of net loss and prior service costs		790			374		Employee benefits (Non-interest expense)
Related income tax benefit		(315	)		(138	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		475			236
Total reclassifications for the period		397		$	198

⁽¹⁾ For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income see Note 4, “Securities.”

⁽²⁾ Included in the computation of net periodic pension cost. See Note 6, “Pension Plan” for additional detail.

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NOTE 9. COMMITMENTS AND CONTINGENT LIABILITIES

Commitments — In the normal course of business, WesBanco offers off-balance sheet credit arrangements to enable its customers to meet their financing objectives. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements. WesBanco’s exposure to credit losses in the event of non-performance by the other parties to the financial instruments for commitments to extend credit and standby letters of credit is limited to the contractual amount of those instruments. WesBanco uses the same credit policies in making commitments and conditional obligations as for all other lending. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The allowance for credit losses associated with commitments was $0.5 million as of March 31, 2015 and December 31, 2014, respectively, and is included in other liabilities on the Consolidated Balance Sheets.

Letters of credit are conditional commitments issued by banks to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements, including normal business activities, bond financing and similar transactions. Letters of credit are considered guarantees. The liability associated with letters of credit was $0.2 million as of March 31, 2015 and December 31, 2014, respectively.

Contingent obligations to purchase loans funded by other entities include affordable housing plan guarantees and credit card guarantees. Affordable housing plan guarantees are performance guarantees for various building project loans. The guarantee amortizes as the loan balances decrease. Credit card guarantees are credit card balances not owned by WesBanco, whereby the Bank guarantees the performance of the cardholder.

The following table presents total commitments to extend credit, guarantees and various letters of credit outstanding:

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Lines of credit	$	1,032,235	$	984,352
Loans approved but not closed		295,702		116,757
Overdraft limits		110,389		95,965
Letters of credit		26,910		23,362
Contingent obligations to purchase loans funded by other entities		8,457		8,312

Contingent Liabilities — WesBanco is a party to various legal and administrative proceedings and claims. While any litigation contains an element of uncertainty, management does not believe that a material loss related to such proceedings or claims pending or known to be threatened is reasonably possible.

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NOTE 10. BUSINESS SEGMENTS

WesBanco operates two reportable segments: community banking and trust and investment services. WesBanco’s community banking segment offers services traditionally offered by full-service commercial banks, including commercial demand, individual demand and time deposit accounts, as well as commercial, mortgage and individual installment loans, and certain non-traditional offerings, such as insurance and securities brokerage services. The trust and investment services segment offers trust services as well as various alternative investment products including mutual funds. The market value of assets managed or held in custody by the trust and investment services segment was approximately $3.9 billion and $3.8 billion at March 31, 2015 and 2014, respectively. These assets are held by WesBanco in fiduciary or agency capacities for their customers and therefore are not included as assets on WesBanco’s Consolidated Balance Sheets.

Condensed financial information by business segment is presented below:

(unaudited, in thousands)	Community Banking		Trust and Investment Services		Consolidated
For the Three Months ended March 31, 2015:
Interest income	$	60,379	$	—	$	60,379
Interest expense		5,424		—		5,424
Net interest income		54,955		—		54,955
Provision for credit losses		1,289		—		1,289
Net interest income after provision for credit losses		53,666		—		53,666
Non-interest income		12,137		6,053		18,190
Non-interest expense		50,278		3,163		53,441
Income before provision for income taxes		15,525		2,890		18,415
Provision for income taxes		3,372		1,156		4,528
Net income	$	12,153	$	1,734	$	13,887
For the Three Months ended March 31, 2014:
Interest income	$	53,457	$	—	$	53,457
Interest expense		6,132		—		6,132
Net interest income		47,325		—		47,325
Provision for credit losses		2,199		—		2,199
Net interest income after provision for credit losses		45,126		—		45,126
Non-interest income		11,401		5,648		17,049
Non-interest expense		36,827		3,268		40,095
Income before provision for income taxes		19,700		2,380		22,080
Provision for income taxes		4,707		952		5,659
Net income	$	14,993	$	1,428	$	16,421

Total non-fiduciary assets of the trust and investment services segment were $3.7 million and $4.0 million at March 31, 2015 and 2014, respectively. All other assets, including goodwill and other intangible assets, were allocated to the community banking segment.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Management’s Discussion and Analysis (“MD&A”) represents an overview of the results of operations and financial condition of WesBanco for the three months ended March 31, 2015. This discussion and analysis should be read in conjunction with the Consolidated Financial Statements and Notes thereto.

FORWARD-LOOKING STATEMENTS

Forward-looking statements in this report relating to WesBanco’s plans, strategies, objectives, expectations, intentions and adequacy of resources, are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The information contained in this report should be read in conjunction with WesBanco’s Form 10-K for the year ended December 31, 2014 and documents subsequently filed by WesBanco with the Securities and Exchange Commission (“SEC”), which are available at the SEC’s website, www.sec.gov or at WesBanco’s website, www.wesbanco.com. Investors are cautioned that forward-looking statements, which are not historical fact, involve risks and uncertainties, including those detailed in WesBanco’s most recent Annual Report on Form 10-K filed with the SEC under “Risk Factors” in Part I, Item 1A. Such statements are subject to important factors that could cause actual results to differ materially from those contemplated by such statements, including, without limitation, that the businesses of WesBanco and ESB may not be integrated successfully or such integration may take longer to accomplish than expected; the expected cost savings and any revenue synergies from the merger of WesBanco and ESB may not be fully realized within the expected timeframes; disruption from the merger of WesBanco and ESB may make it more difficult to maintain relationships with clients, associates, or suppliers; the effects of changing regional and national economic conditions; changes in interest rates, spreads on earning assets and interest-bearing liabilities, and associated interest rate sensitivity; sources of liquidity available to WesBanco and its related subsidiary operations; potential future credit losses and the credit risk of commercial, real estate, and consumer loan customers and their borrowing activities; actions of the Federal Reserve Board, the Federal Deposit Insurance Corporation, the SEC, the Financial Institution Regulatory Authority, the Municipal Securities Rulemaking Board, the Securities Investors Protection Corporation, and other regulatory bodies; potential legislative and federal and state regulatory actions and reform, including, without limitation, the impact of the implementation of the Dodd-Frank Act; adverse decisions of federal and state courts; fraud, scams and schemes of third parties; internet hacking; competitive conditions in the financial services industry; rapidly changing technology affecting financial services; marketability of debt instruments and corresponding impact on fair value adjustments; and/or other external developments materially impacting WesBanco’s operational and financial performance. WesBanco does not assume any duty to update forward-looking statements.

OVERVIEW

WesBanco is a multi-state bank holding company operating through 142 branches, one loan production office and 130 ATM machines in West Virginia, Ohio and western Pennsylvania, offering retail banking, corporate banking, personal and corporate trust services, brokerage services, mortgage banking and insurance. WesBanco’s businesses are significantly impacted by economic factors such as market interest rates, federal monetary and regulatory policies, local and regional economic conditions and the competitive environment’s effect upon WesBanco’s business volumes. WesBanco’s deposit levels are affected by numerous factors including personal savings rates, personal income, and competitive rates on alternative investments, as well as competition from other financial institutions within the markets we serve and liquidity needs of WesBanco. Loan levels are also subject to various factors including construction demand, business financing needs, consumer spending and interest rates, as well as loan terms offered by competing lenders.

On February 10, 2015, WesBanco completed the acquisition of ESB a Pennsylvania savings bank holding company, headquartered in Ellwood City, Lawrence County, northwest of Pittsburgh, PA, with approximately $1.9 billion in assets and 23 offices in four southwestern PA counties, three of which are in the Pittsburgh Metropolitan Statistical Area (“MSA”). WesBanco now has $8.2 billion in total assets; the transaction expanded WesBanco’s franchise in western Pennsylvania from 16 to 38 offices with approximately $1.7 billion in total deposits. ESB’s results were included in WesBanco’s results from the date of the consummation of the merger.

APPLICATION OF CRITICAL ACCOUNTING POLICIES AND ESTIMATES

WesBanco’s critical accounting policies involving the significant judgments and assumptions used in the preparation of the Consolidated Financial Statements as of March 31, 2015 have remained unchanged from the disclosures presented in WesBanco’s Annual Report on Form 10-K for the year ended December 31, 2014 within the section “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

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RESULTS OF OPERATIONS

EARNINGS SUMMARY

Net income for the three months ended March 31, 2015 was $13.9 million, while diluted earnings per share were $0.40, compared to $16.4 million or $0.56 per share for the first quarter of 2014. After tax merger-related expenses of $6.3 million, and temporary extra operating costs of approximately $0.5 million associated with ESB were the reasons for the decrease in net income in the first quarter. Net income for the three months ended March 31, 2015, excluding after-tax merger-related expenses, was $20.2 million (non-GAAP measure) compared to $16.4 million for the first quarter of 2014, representing an increase of 23.1%. Diluted earnings per share, excluding after-tax merger-related expenses, were $0.59 (non-GAAP measure), compared to $0.56 per share for the first quarter of 2014.

	For the Three Months Ended March 31,
	2015						2014
(unaudited, dollars in thousands, except per share amounts)	Net Income			Diluted Earnings Per Share			Net Income		Diluted Earnings Per Share
Net income, excluding after-tax merger-related expenses (Non-GAAP) (1)	$	20,213		$	0.59		$	16,421	$	0.56
Less: After tax merger-related expenses		(6,326	)		(0.19	)		—		—
Net income (GAAP)	$	13,887		$	0.40		$	16,421	$	0.56

(1) The above non-GAAP financial measures used by WesBanco provide information useful to investors in understanding WesBanco’s operating performance and trends, and facilitate comparisons with the performance of WesBanco’s peers.

Net interest income increased $7.6 million or 16.1% in the first quarter of 2015 compared to the first quarter of 2014 due to a 16.9% increase in average earning assets, primarily through the ESB acquisition, and through a 6.4% increase in average loan balances, exclusive of ESB, slightly offset by a 4 basis point decrease in the net interest margin. Growth in net interest income has been consistent. The first quarter of 2015 is the seventh consecutive quarter that net interest income has increased. The net interest margin decreased to 3.59% in the first quarter compared to 3.63% in the same quarter of 2014. The net interest margin has ranged from 3.64% to 3.58% over the last five quarters as reduced funding costs have generally exceeded the effect of lower rates on newly acquired securities and loans. In addition, the aforementioned loan growth improves asset yields as the average rate on loans is higher than the average rate on securities. Funding costs continued to decrease in 2015 as a result of a 14.2% increase in average lower-cost demand, money market and savings account deposits, while higher-cost CDs increased by only 8.6%, entirely due to the ESB acquisition. The average rate on CDs declined by 27 basis points as higher-rate CDs matured. Overall, average deposits increased by 12.6% in the first quarter of 2015 compared to the same quarter of 2014. In addition, a 20.0% reduction in higher-rate average other borrowings improved funding costs through the prepayment of a higher-rate $22.0 million repurchase agreement with another bank in the third quarter of 2014, and through maturities. Increased average FHLB borrowings in the first quarter were generally short to medium-term with an average rate lower than the average CD rate. The increase in other interest income was due to FHLB special dividends totaling $0.6 million received in the first quarter. Excluding accretion of various purchase accounting adjustments relating to recent acquisitions, the net interest margin would have been 3.49% in the first quarter of 2015 compared to 3.58% for the same quarter of 2014. The reduction is primarily due to asset and liability mix shifts post-ESB, with a greater percentage of lower-yielding investment securities and a greater percentage of CDs versus lower-cost deposits. Loan accretion included in interest income on acquired ESB loans is estimated to approximate $1.9 million in 2015, while accretion of $2.9 million is estimated on acquired ESB interest bearing liabilities in 2015, primarily CDs.

Continued improvement in the credit quality of the pre-acquisition legacy portfolio resulted in a provision for credit losses of $1.3 million in the first quarter of 2015 compared to $2.2 million in the same quarter of 2014. Net charge-offs for the first three months of 2015 were $1.7 million or 0.16% of average portfolio loans compared to $4.1 million or 0.43% in the first quarter of 2014.

For the first quarter of 2015, non-interest income increased $1.1 million or 6.7% compared to the first quarter of 2014. Trust fees increased $0.4 million or 7.2% for the quarter as assets under management continued to increase from customer development initiatives and overall market improvements. Total trust assets were $3.9 billion at March 31, 2015, representing an increase of 2.7% from March 31, 2014. Net securities brokerage revenues increased $0.2 million or 12.6%, due to significant production increases from the addition of support and sales staff in several regions, as well as an increase in referrals and production from a licensed retail banker program. Bank-owned life insurance increased $0.4 million or 43.0%, primarily due to a death claim in the first quarter, and electronic banking fees increased $0.3 million or 10.4%. Mortgage loan sale gains increased slightly, as production increased from last year’s first quarter. Service charges on deposits decreased $0.2 million or 5.4% compared to the 2014 first quarter due to lower overdraft fees that are affected by customer usage patterns and consistent increases in deposit levels and higher average deposits per account.

In the first quarter of 2015, non-interest expense increased $13.3 million compared to the first quarter of 2014 due to normal operating expenses from the ESB acquisition and $9.7 million of merger-related expenses. Excluding merger-related expenses, non-interest expense increased just $3.6 million or 9.0%, primarily due to the ESB acquisition, with approximately $0.7 million of such increase related to post-merger personnel and IT costs that will be immediately saved as a result of the April 24 weekend systems and branch conversions. Salaries and wages increased $1.9 million or 11.5%, due to an 8.6% increase in average full-time equivalent employees, routine annual adjustments to compensation, and increased commissions on higher brokerage sales, partially offset by increased deferred loan costs. Employee benefits expense increased $1.6 million or 28.2%, primarily from increased pension, health insurance and other benefit plan costs. Even with the ESB acquisition, net occupancy, marketing and other expenses were down from last year due to efficiencies applied in several of our vendor contracts, lower real estate owned (“REO”) costs, marketing campaign timing and other seasonal factors. The merger of ESB’s information systems into WesBanco’s will result in additional cost savings beyond those noted above over the course of the next 12 – 18 months.

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The provision for income taxes in the first quarter of 2015 included a credit of $0.5 million relating to the completion of an IRS audit which closed the 2011 and 2012 tax years. As a result, the effective tax rate decreased to 24.59% compared to 25.63% for the first quarter of 2014.

NET INTEREST INCOME

TABLE 1. NET INTEREST INCOME

	For the Three Months Ended March 31,
(unaudited, dollars in thousands)	2015			2014
Net interest income	$	54,955		$	47,325
Taxable equivalent adjustments to net interest income		1,902			1,823
Net interest income, fully taxable equivalent	$	56,857		$	49,148
Net interest spread, non-taxable equivalent		3.38	%		3.39	%
Benefit of net non-interest bearing liabilities		0.09	%		0.11	%
Net interest margin		3.47	%		3.50	%
Taxable equivalent adjustment		0.12	%		0.13	%
Net interest margin, fully taxable equivalent		3.59	%		3.63	%

Net interest income, which is WesBanco’s largest source of revenue, is the difference between interest income on earning assets, primarily loans and securities, and interest expense on liabilities (deposits and short and long-term borrowings). Net interest income is affected by the general level and changes in interest rates, the steepness and shape of the yield curve, changes in the amount and composition of interest earning assets and interest bearing liabilities, as well as the frequency of repricing of existing assets and liabilities. Net interest income increased $7.6 million or 16.1% in the first quarter of 2015 compared to the first quarter of 2014 due to a 16.9% increase in average earning assets, primarily through the ESB acquisition, and through a 6.4% increase in average portfolio loan balances, exclusive of ESB. The increase was slightly offset by a 4 basis point decrease in the net interest margin. Average loan balances increased by $629.1 million or 16.2% from the first quarter of 2014, of which $243.6 million of the increase was from organic loan growth. Total average deposits increased by $645.4 million or 12.6% as all major categories within deposits increased. Excluding the ESB acquisition, average certificates of deposit, which have the highest interest cost among interest bearing deposits, decreased by $214.4 million or 14.2%, while all other deposit types increased by $184.9 million or 5.1%. These lower-cost and non-interest bearing deposit increases were the result of marketing campaigns, customer incentives, wealth management and business initiatives as well as deposits from Marcellus and Utica shale gas bonus and royalty payments. The net interest margin decreased to 3.59% in the first quarter of 2015 from 3.63% in the same period of 2014. The reduction is primarily due to asset and liability mix shifts post-ESB. The cost of funds continued to improve, declining 13 basis points from the first quarter of 2014 due to lower offered rates, increases in the percentage of lower-cost and non-interest bearing deposit balances to total deposits and lower rates on FHLB and other borrowings.

Interest income increased in the first quarter of 2015 by $6.9 million or 13.0% compared to the same period in 2014 due to higher average balances of earning assets acquired both in the ESB acquisition and organically, offset by lower yields on loans and the investment portfolio. Rates decreased 18 basis points in the first quarter on average loan balances from reduced rates on acquired, organic and repriced assets due to the necessity of offering lower rates on quality credits in an increasingly competitive and low interest rate environment. However, the increase in average loans helped to mitigate the effect of the lower rates, as rates earned on loans are higher than those on securities. In the first quarter of 2015, average loans represented 70.3% of average earning assets, a slight decrease compared to 70.7% in the same quarter of 2014 due to the acquired loan portfolio being smaller than the acquired investment portfolio. Total securities yields decreased by 22 basis points in the first quarter of 2015 from the same period in 2014 due to the ESB acquisition, net of sales, and the reinvestment of funds from pre-acquisition portfolio restructuring at current lower available interest rates. Within the investment portfolio, the average rate declined on taxable and tax-exempt securities by 12 and 29 basis points, respectively, from the first quarter of 2014, offset somewhat by the aforementioned higher average balances in each category. The average balance of tax-exempt securities, which provide the highest yield within securities, increased 10.5% or $42.1 million over the last year, but were only 23.9% of total average securities in the first quarter of 2015 compared to 26.0% in the first quarter of 2014, contributing to the overall lower yield on total securities. Taxable securities balances increased by $269.2 million or 23.6% from the first quarter of 2014 as a significant portion of the acquired securities consisted of 10-15 year residential mortgage pools. Shorter-term mortgage pools reduce the average life of the portfolio, particularly for the portion accounted for as available-for-sale, positioning the Bank for possible future increases in interest rates, while maintaining required levels of pledgeable securities.

Portfolio loans increased $986.6 million in the twelve months ended March 31, 2015 with $699.0 million from the ESB acquisition and $287.6 million or 7.4% from loan growth exclusive of ESB as originations continued to outpace paydowns. Organic loan growth from December 31, 2014, annualized was 8.7%, primarily due to $357 million in loan originations for the first quarter compared to $273 million last year. Loan growth was driven by increased business activity, additional commercial and lending personnel in our urban markets, focused marketing efforts, and continued improvement in loan origination processes, while paydowns decreased.

Interest expense decreased $0.7 million or 11.5% in the first quarter of 2015 compared to the same period in 2014 due to decreases in average rates paid, and a continued shift in the liability mix towards less expensive sources of funding; offset slightly by an increase in average balances of interest bearing deposits and FHLB borrowings. Total average interest bearing liabilities increased $763.6 million or 17.3% in the first quarter due to deposits from the ESB acquisition, increased organic deposits and increased short to medium-term FHLB borrowings. The average rate paid on

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interest bearing liabilities decreased 13 basis points in the first quarter of 2015 compared to the same period in 2014. Rates paid on interest bearing deposits declined by 11 basis points to 0.34% in the first quarter due to a significant decline in rates on certificates of deposit, as a result of management reducing offered rates and the repricing, through purchase accounting, of acquired CDs on the acquisition date at lower market rates. The average rate paid on certificates of deposit declined by 27 basis points from the first quarter of 2014, while the rates paid on other deposit types remained nearly unchanged. Improvements in the deposit funding mix also lowered the cost of funds, with average certificates of deposit decreasing to 28.3% of total average deposits from 29.3% in the first quarter of last year, even after the acquisition of ESB. Average CDs increased by only 8.6%, entirely due to the ESB acquisition, as average demand, money market and savings deposits increased by 14.2%. WesBanco continues to focus on reducing rate offerings and growing customers with multiple banking relationships, as opposed to single service certificates of deposit customers. In addition, non-interest bearing demand deposits increased to 20.1% of total average deposits in the first quarter of 2015 compared to 19.2% in the same period of 2014. Average total other borrowings decreased by $23.0 million or 20.0% in the first quarter which further improved funding costs due to the prepayment of a higher-rate $22.0 million repurchase agreement with another bank in the third quarter of 2014. Average FHLB borrowings increased in the first quarter of 2015 to manage normal liquidity needs and were generally short to medium-term with an average rate of 0.68%, which is lower than the average CD rate.

TABLE 2. AVERAGE BALANCE SHEETS AND NET INTEREST MARGIN ANALYSIS

	For the Three Months Ended March 31,
	2015					2014
(unaudited, dollars in thousands)	Average Balance		Average Rate			Average Balance		Average Rate
ASSETS
Due from banks - interest bearing	$	29,585		0.14	%	$	51,149		0.17	%
Loans, net of unearned income (1)		4,502,920		4.30	%		3,873,789		4.48	%
Securities: (2)
Taxable		1,410,138		2.41	%		1,140,982		2.53	%
Tax-exempt (3)		441,923		4.92	%		399,794		5.21	%
Total securities		1,852,061		3.01	%		1,540,776		3.23	%
Other earning assets (4)		17,817		14.03	%		11,568		2.73	%
Total earning assets (3)		6,402,383		3.93	%		5,477,282		4.08	%
Other assets		1,128,712					709,216
Total Assets	$	7,531,095				$	6,186,498
LIABILITIES AND SHAREHOLDERS’ EQUITY
Interest bearing demand deposits	$	1,041,608		0.16	%	$	887,518		0.17	%
Money market accounts		978,086		0.19	%		945,412		0.19	%
Savings deposits		962,987		0.06	%		808,710		0.07	%
Certificates of deposit		1,633,854		0.71	%		1,504,605		0.98	%
Total interest bearing deposits		4,616,535		0.34	%		4,146,245		0.45	%
Federal Home Loan Bank borrowings		331,703		0.68	%		35,028		2.44	%
Other borrowings		92,307		0.33	%		115,326		1.96	%
Junior subordinated debt		125,826		2.88	%		106,141		3.02	%
Total interest bearing liabilities (1)		5,166,371		0.43	%		4,402,740		0.56	%
Non-interest bearing demand deposits		1,158,228					983,096
Other liabilities		249,660					41,821
Shareholders’ equity		956,836					758,841
Total Liabilities and Shareholders’ Equity	$	7,531,095				$	6,186,498
Taxable equivalent net interest spread				3.50	%				3.52	%
Taxable equivalent net interest margin				3.59	%				3.63	%

(1) Gross of allowance for loan losses and net of unearned income. Includes non-accrual and loans held for sale. Loan fees included in interest income on loans totaled $1.1 million and $0.9 million for the three months ended March 31, 2015 and 2014, respectively. Additionally, loan accretion included in net interest income on loans acquired from prior acquisitions was $0.8 million and $0.4 million for the three months ended March 31, 2015 and 2014, respectively, while accretion on interest bearing liabilities from prior acquisitions was $0.8 million and $0.2 million for the three months ended March 31, 2015 and 2014, respectively.

(2) Average yields on available-for-sale securities are calculated based on amortized cost and include premium amortization and discount accretion from prior acquisitions.

(3) Taxable equivalent basis is calculated on tax-exempt securities using a tax rate of 35% for each year presented.

(4) Interest income on other earning assets includes $0.6 million from a special dividend from FHLB Pittsburgh for the three months ended March 31, 2015.

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TABLE 3. RATE/VOLUME ANALYSIS OF CHANGES IN INTEREST INCOME AND INTEREST EXPENSE

	Three Months Ended March 31, 2015 Compared to March 31, 2014
(unaudited, in thousands)	Volume			Rate			Net Increase (Decrease)
Increase (decrease) in interest income:
Due from banks - interest bearing	$	(7	)	$	(5	)	$	(12	)
Loans, net of unearned income		6,720			(1,753	)		4,967
Taxable securities		1,636			(363	)		1,273
Tax-exempt securities (1)		528			(300	)		228
Other earning assets		67			479			546
Total interest income change (1)		8,944			(1,942	)		7,002
Increase (decrease) in interest expense:
Interest bearing demand deposits		63			(15	)		48
Money market accounts		16			—			16
Savings deposits		24			(6	)		18
Certificates of deposit		291			(1,049	)		(758	)
Federal Home Loan Bank borrowings		599			(253	)		346
Other borrowings		(93	)		(389	)		(482	)
Junior subordinated debt		141			(37	)		104
Total interest expense change		1,041			(1,749	)		(708	)
Net interest income increase (decrease) (1)	$	7,903		$	(193	)	$	7,710

(1) Taxable equivalent basis is calculated on tax-exempt securities using a tax rate of 35% for each year presented.

PROVISION FOR CREDIT LOSSES

The provision for credit losses is the amount to be added to the allowance for credit losses after net charge-offs have been deducted to bring the allowance to a level considered appropriate to absorb probable losses in the loan portfolio. The provision for credit losses also includes the amount to be added to the reserve for loan commitments to bring that reserve to a level considered appropriate to absorb probable losses on unfunded commitments. Continued improvement in the credit quality of the pre-acquisition legacy portfolio resulted in a provision for credit losses of $1.3 million in the first quarter of 2015 compared to $2.2 million in the same quarter of 2014. Net charge-offs for the first three months of 2015 were $1.7 million or 0.16% of average portfolio loans compared to $4.1 million or 0.43% in the first quarter of 2014. Legacy non-performing loans, including TDRs, as well as criticized and classified loans, also improved as a percentage of total portfolio loans from their pre-acquisition levels in the fourth quarter of 2014. (Please see the Allowance for Credit Losses section of this MD&A for additional discussion).

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NON-INTEREST INCOME

TABLE 4. NON-INTEREST INCOME

	For the Three Months Ended March 31,
(unaudited, dollars in thousands)	2015		2014		$ Change			% Change
Trust fees	$	6,053	$	5,648	$	405			7.2
Service charges on deposits		3,652		3,860		(208	)		(5.4	)
Electronic banking fees		3,325		3,013		312			10.4
Net securities brokerage revenue		2,059		1,829		230			12.6
Bank-owned life insurance		1,251		875		376			43.0
Net gains on sales of mortgage loans		272		154		118			76.6
Net securities gains		22		10		12			120.0
Net gain on other real estate owned and other assets		122		113		9			8.0
Net insurance services revenue		862		741		121			16.3
Other		572		806		(234	)		(29.0	)
Total non-interest income	$	18,190	$	17,049	$	1,141			6.7

Non-interest income is a significant source of revenue and an important part of WesBanco’s results of operations. WesBanco offers its customers a wide range of retail, commercial, investment and electronic banking services, which are viewed as a vital component of WesBanco’s ability to attract and maintain customers, as well as providing additional fee income beyond normal spread-related income to WesBanco. For the first quarter of 2015, non-interest income increased $1.1 million or 6.7% compared to the first quarter of 2014. The increase was primarily due to improved trust fee income and securities brokerage revenue, a $0.4 million bank-owned life insurance death benefit and a 10.4% increase in electronic banking fees, while service charges on deposits decreased due to lower overdraft fees affected by customer usage and increases in customer deposits.

Trust fees increased $0.4 million or 7.2% as assets under management continued to increase from customer development initiatives and overall market improvements. Total trust assets were up 2.7% from $3.8 billion at March 31, 2014 to $3.9 billion at March 31, 2015. At March 31, 2015, trust assets include managed assets of $3.2 billion and non-managed (custodial) assets of $0.7 billion. Assets managed for the WesMark Funds, a proprietary group of mutual funds that is advised by WesBanco’s trust and investment services group, were $961.0 million as of March 31, 2015 and $915.1 million at March 31, 2014 and are included in trust managed assets.

Service charges on deposits decreased 5.4% for the quarter compared to the first quarter of 2014 due to lower overdraft fees that were affected by lower customer usage patterns, implementation of certain FDIC guidelines for overdraft products, consistent increases in deposit levels and higher average deposits per account. The acquisition somewhat mitigated these factors.

Electronic banking fees, which include debit card interchange fees, continued to grow, increasing 10.4% compared to the first quarter of 2014, due to a higher volume of debit card transactions from the acquisition and WesBanco’s legacy customers. The volume increase is due to marketing and process initiatives and as customers move more towards electronic transactions and a higher percentage of customers using these products.

Net securities brokerage revenue increased $0.2 million or 12.6% from the first quarter of 2014 due to significant production increases from existing markets, additional market coverage in the expanded western Pennsylvania market, the addition of support and producing staff in several regions, as well as an increase in referrals and production from a licensed retail banker program.

Net gains on sales of mortgage loans increased 76.6% compared to the three months ended March 31, 2014 due to increased production and a greater volume of loans sold into the secondary market, despite the recently-adopted Qualified Mortgage and Ability-to-Repay rules, which have somewhat limited our product offerings and overall loan approvals. Total mortgage production was $80.5 million in the first quarter of 2015, up 74.3% from the comparable 2014 quarter. Mortgages sold into the secondary market represented $22.9 million or 28.4% of overall mortgage loan production in the first quarter of 2015 compared to $17.1 million or 37.0% in the first quarter of 2014.

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NON-INTEREST EXPENSE

TABLE 5. NON-INTEREST EXPENSE

	For the Three Months Ended March 31,
(unaudited, dollars in thousands)	2015		2014		$ Change			% Change
Salaries and wages	$	18,357	$	16,467	$	1,890			11.5
Employee benefits		7,316		5,708		1,608			28.2
Net occupancy		3,490		3,491		(1	)		(0.0	)
Equipment		2,973		2,783		190			6.8
Marketing		965		1,003		(38	)		(3.8	)
FDIC insurance		910		877		33			3.8
Amortization of intangible assets		566		495		71			14.3
Restructuring and merger-related expenses		9,733		—		9,733			100.0
Miscellaneous, franchise, and other taxes		1,561		1,626		(65	)		(4.0	)
Postage		788		841		(53	)		(6.3	)
Consulting, regulatory, accounting and advisory fees		1,330		1,144		186			16.3
Other real estate owned and foreclosure expenses		170		259		(89	)		(34.4	)
Legal fees		541		658		(117	)		(17.8	)
Communications		346		521		(175	)		(33.6	)
ATM and interchange expenses		1,021		1,102		(81	)		(7.4	)
Supplies		637		626		11			1.8
Other		2,737		2,494		243			9.7
Total non-interest expense	$	53,441	$	40,095	$	13,346			33.3

Non-interest expense increased $13.3 million in the first quarter compared to the first quarter of 2014 due to normal operating expenses from the ESB acquisition and $9.7 million of merger-related expenses. Total non-interest expense would have increased $3.6 million or 9.0% for the quarter without merger-related expenses, to a large extent due to the normal operating expenses from the 23 ESB offices acquired in the Pittsburgh area and increased revenue generation activity throughout the organization. Even with the ESB acquisition, other expenses including marketing, communications, and legal were down from last year due to efficiencies applied in several of our vendor contracts, lower REO costs and marketing campaign timing. The merger of ESB’s information systems into WesBanco’s will result in additional cost savings beyond those noted above over the course of the next 12 – 18 months as per our earlier announced plans.

Salaries and wages increased $1.9 million or 11.5% from the first quarter of 2014 due to an 8.6% increase in average full-time equivalent employees, with approximately $0.5 million of such increase related to post-merger personnel costs that will be immediately saved as a result of the April 24 weekend systems and branch conversions. In addition, routine annual adjustments to compensation and increased brokerage revenue commissions increased over the prior comparable period. Employee benefit expenses increased 28.2%, primarily from increased pension, health insurance and other benefit plan costs as well as the addition of ESB’s personnel.

Net occupancy and equipment expense increased $0.2 million or 3.0% due to increased depreciation and other maintenance costs resulting primarily from the 23 ESB offices. In addition, new teller cash recycling machines continue to be introduced into our branches, which have improved the speed of customer service, improved cash controls and reduced full-time equivalent employees.

Amortization of intangible assets increased due to the ESB acquisition, which added approximately $5.3 million in core deposit intangibles.

Restructuring and merger-related expenses of $9.7 million in 2015 related to the ESB acquisition include $7.5 million in executive change-in-control and employee severance expenses, $1.7 million in investment banking services, $0.2 million in legal expenses, and $0.3 million of various other merger-related expenses.

Other real estate owned and foreclosure expenses decreased $0.1 million in 2015 compared to 2014 due to lower foreclosure and liquidation activity. Other real estate owned and repossessed assets increased $0.8 million from the first quarter of 2014 to $6.2 million due to the ESB acquisition, which added approximately $1.4 million.

Communications expense decreased 33.6% from the first quarter of 2014 due to the implementation of a company-wide modernization of the communication infrastructure during 2014.

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INCOME TAXES

The provision for federal and state income taxes was $4.5 million in 2015 compared to $5.7 million in the first quarter of 2014. The decrease in income tax expense was due to a decrease in pre-tax income, from merger-related expenses of $9.7 million, and a $0.5 million benefit relating to the completion of an IRS audit which closed the 2011 and 2012 tax years, which resulted in an effective tax rate of 24.6% for 2015 compared to 25.6% for 2014. The effective tax rate is anticipated to range between 26.5% and 27.5% for the remainder of 2015.

FINANCIAL CONDITION

Total assets increased 30.8% during the quarter, while deposits and shareholders’ equity increased 27.1% and 38.5%, respectively, compared to December 31, 2014 primarily due to the acquisition of ESB. Total loans increased $787.2 million or 19.2% with $699.0 million from the ESB acquisition and the remaining $88.2 million from WesBanco’s originations outpacing pay downs, which were a result of increased business activity, additional lending personnel, focused marketing efforts, an expanded presence in larger urban markets, and continued improvement in the loan origination process. Deposits increased $1.4 billion, with $1.2 billion from the ESB acquisition and $134.9 million from organic growth. The organic growth in deposits resulted from a 5.8% increase in demand deposits, a 3.8% increase in savings deposits and a 2.6% increase in money market deposits, which more than offset the 2.6% decrease in certificates of deposit due to lower rate offerings on maturities. The increase in demand deposits, savings deposits and money market deposits were attributable to marketing, incentives paid to customers, focused retail and business strategies to obtain more account relationships, and customers’ preference for short-term maturities, coupled with initial deposits from bonus and royalty payments for Marcellus and Utica shale gas payments from energy companies in WesBanco’s southwestern Pennsylvania, eastern Ohio and northern West Virginia markets. Total borrowings increased 58.9% during the quarter. FHLB borrowings increased $209.3 million from December 31, 2014, due primarily to $173.9 million in new borrowings, coupled with $35.4 million in FHLB borrowings provided from the ESB acquisition. New borrowings were utilized to manage WesBanco’s normal liquidity needs, including loan and investment funding, as well as certificates of deposit runoff. Total shareholders’ equity increased by approximately $303.2 million or 38.5%, compared to December 31, 2014, primarily due to $293.6 million of common stock issued in the ESB acquisition and net income exceeding dividends for the period by $5.0 million, coupled with $5.2 million of additional unrealized gains in accumulated other comprehensive income.

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TABLE 6. COMPOSITION OF SECURITIES (1)

(unaudited, dollars in thousands)	March 31, 2015			December 31, 2014			$ Change			% Change
Available-for-sale (at fair value)
Obligations of government agencies	$	80,768		$	87,736		$	(6,968	)		(7.9	)
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,283,445			701,113			582,332			83.1
Obligations of states and political subdivisions		95,653			91,433			4,220			4.6
Corporate debt securities		183,090			25,996			157,094			604.3
Total debt securities		1,642,956			906,278			736,678			81.3
Equity securities		11,308			11,146			162			1.5
Total available-for-sale securities	$	1,654,264		$	917,424		$	736,840			80.3
Held-to-maturity (at amortized cost)
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies	$	126,935		$	79,004		$	47,931			60.7
Obligations of states and political subdivisions		610,249			507,927			102,322			20.1
Corporate debt securities		6,741			6,739			2			0.0
Total held-to-maturity securities		743,925			593,670			150,255			25.3
Total securities	$	2,398,189		$	1,511,094		$	887,095			58.7
Available-for-sale securities:
Weighted average yield at the respective period end (2)		2.06	%		2.34	%
As a % of total securities		69.0	%		60.7	%
Weighted average life (in years)		4.1			4.0
Held-to-maturity securities:
Weighted average yield at the respective period end (2)		4.29	%		4.67	%
As a % of total securities		31.0	%		39.3	%
Weighted average life (in years)		5.0			5.1
Total securities:
Weighted average yield at the respective period end (2)		2.76	%		3.27	%
As a % of total securities		100.0	%		100.0	%
Weighted average life (in years)		4.4			4.4

(1) At March 31, 2015 and December 31, 2014, there were no holdings of any one issuer, other than the U.S. government and certain federal or federally-related agencies, in an amount greater than 10% of WesBanco’s shareholders’ equity.

(2) Weighted average yields have been calculated on a taxable-equivalent basis using the federal statutory tax rate of 35%.

Total investment securities, which are a source of liquidity for WesBanco as well as a contributor to interest income, increased by $887.1 million or 58.7% from December 31, 2014 to March 31, 2015. This increase is attributable to the ESB acquisition. On the date of merger, the investment portfolio increased by $486.9 million. Portfolio restructuring on the acquired portfolio began prior to merger, and continued after the merger which resulted in purchases of $457.2 million in the first quarter. Offsetting the acquired securities and purchases in the first quarter were maturities, paydowns, and calls that totaled $62.2 million. Through the first quarter, the available-for-sale portfolio increased by $736.8 million or 80.3%, while the held-to-maturity portfolio increased by $150.3 million or 25.3%. The weighted average yield of the portfolio declined from 3.27% at December 31, 2014 to 2.76% at March 31, 2015 due to the ESB acquisition and purchases of securities in the first quarter at lower current market rates.

Net unrealized gains on available-for-sale securities included in accumulated other comprehensive income, net of tax, as of March 31, 2015 and December 31, 2014 were $12.1 million and $4.6 million, respectively. Unrealized gains increased on available-for-sale securities due to a decrease in market rates from December 31, 2014. With approximately 31% of the investment portfolio in the held-to-maturity category, the recent volatility in interest rates does not have as much impact on other comprehensive income as if the entire portfolio were included in the category available-for-sale.

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WesBanco’s municipal portfolio comprises 29.4% of the overall securities portfolio as of March 31, 2015 as compared to 39.7% as of December 31, 2014, and it carries different risks that are not as prevalent in other security types contained in the portfolio. The following table presents the allocation of the municipal bond portfolio based on the combined S&P and Moody’s ratings of the individual bonds (at fair value):

TABLE 7. MUNICIPAL BOND RATINGS

	March 31, 2015				December 31, 2014
(unaudited, dollars in thousands)	Amount		% of Total		Amount		% of Total
Municipal bonds (at fair value) (1):
Moody’s: Aaa / S&P: AAA	$	66,260		9.1	$	50,205		8.1
Moody’s: Aa1 ; Aa2 ; Aa3 / S&P: AA+ ; AA ; AA-		530,741		72.5		449,219		72.1
Moody’s: A1 ; A2 ; A3 / S&P: A+ ; A ; A-		128,608		17.6		117,398		18.9
Moody’s: Baa1 ; Baa2 ; Baa3 / S&P: BBB+ ; BBB ; BBB- (2)		3,035		0.4		1,958		0.3
Not rated by either agency		2,940		0.4		3,454		0.6
Total municipal bond portfolio	$	731,584		100.0	$	622,234		100.0

(1) The highest available rating was used when placing the bond into a category in the table.

(2) As of March 31, 2015 and December 31, 2014, there are no securities in the municipal portfolio rated below investment grade.

WesBanco’s municipal bond portfolio consists of both taxable (primarily Build America Bonds) and tax-exempt general obligation and revenue bonds. The following table presents additional information regarding the municipal bond type and issuer (at fair value):

TABLE 8. COMPOSITION OF MUNICIPAL SECURITIES

	March 31, 2015				December 31, 2014
(unaudited, dollars in thousands)	Amount		% of Total		Amount		% of Total
Municipal bond type:
General Obligation	$	506,111		69.2	$	432,967		69.6
Revenue		225,473		30.8		189,267		30.4
Total municipal bond portfolio	$	731,584		100.0	$	622,234		100.0
Municipal bond issuer:
State Issued	$	69,888		9.6	$	53,931		8.7
Local Issued		661,696		90.4		568,303		91.3
Total municipal bond portfolio	$	731,584		100.0	$	622,234		100.0

The amortized cost of the municipal bond portfolio at March 31, 2015 and December 31, 2014 was $700.2 million and $594.0 million, respectively.

WesBanco’s municipal bond portfolio is broadly spread across the United States. The following table presents the top five states of municipal bond concentration based on total fair value at March 31, 2015:

TABLE 9. CONCENTRATION OF MUNICIPAL SECURITIES

	March 31, 2015
(unaudited, dollars in thousands)	Fair Value		% of Total
Pennsylvania	$	180,130		24.6
Texas		102,953		14.1
Ohio		85,508		11.7
Illinois		40,595		5.5
Michigan		27,451		3.8
All other states (1)		294,947		40.3
Total municipal bond portfolio	$	731,584		100.0

(1) WesBanco’s municipal bond portfolio contains obligations in the state of West Virginia totaling $14.8 million or 2.0% of the total municipal portfolio.

WesBanco uses prices from independent pricing services and, to a lesser extent, indicative (non-binding) quotes from independent brokers, to measure the fair value of its securities. WesBanco validates prices received from pricing services or brokers using a variety of methods, including, but not limited to, comparison to secondary pricing services, corroboration of pricing by reference to other independent market data such as secondary broker quotes and relevant benchmark indices, review of pricing by personnel familiar with market liquidity and other market-related conditions, review of pricing service methodologies, review of independent auditor reports received from the pricing service regarding its internal controls, and through review of inputs and assumptions used in pricing certain securities thinly traded or with limited observable data points. The

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procedures in place provide management with a sufficient understanding of the valuation models, assumptions, inputs and pricing to reasonably measure the fair value of WesBanco’s securities. For additional disclosure relating to fair value measurements, refer to Note 7, “Fair Value Measurement” in the Consolidated Financial Statements.

LOANS AND CREDIT RISK

Loans represent WesBanco’s single largest balance sheet asset classification and the largest source of interest income. Business purpose loans consist of commercial real estate (“CRE”) loans and other commercial and industrial (“C&I”) loans that are not secured by real estate. CRE loans are further segmented into land and construction loans, and loans for improved property. Consumer purpose loans consist of residential real estate loans, home equity lines of credit and other consumer loans. Loans held for sale generally consist of residential real estate loans originated for sale in the secondary market, but at times may also include other types of loans. The outstanding balance of each major category of the loan portfolio is summarized in Table 10.

The risk that borrowers will be unable or unwilling to repay their obligations and default on loans is inherent in all lending activities. Credit risk arises from many sources including general economic conditions, external events that impact businesses or industries, isolated events that impact a major employer, individual loss of employment or other personal hardships as well as changes in interest rates or the value of collateral. Credit risk is also impacted by a concentration of exposure within a geographic market or to one or more borrowers, industries or collateral types. The primary goal in managing credit risk is to minimize the impact of default by an individual borrower or group of borrowers. Credit risk is managed through the initial underwriting process as well as through ongoing monitoring and administration of the portfolio that varies by the type of loan. The Bank’s credit policies establish standard underwriting guidelines for each type of loan and require an appropriate evaluation of the credit characteristics of each borrower. This evaluation includes the borrower’s primary source of repayment capacity; the adequacy of collateral, if any, to secure the loan; the potential value of personal guarantees as secondary sources of repayment; and other factors unique to each loan that may increase or mitigate its risk. Credit bureau scores are also considered when evaluating consumer purpose loans as well as guarantors of business purpose loans. However, the Bank does not periodically update credit bureau scores subsequent to when loans are made to determine changes in credit history.

Credit risk is mitigated for all types of loans by continuously monitoring delinquency levels and pursuing collection efforts at the earliest stage of delinquency. The Bank also monitors general economic conditions, including employment, housing activity and real estate values in its market. The Bank also periodically evaluates and changes its underwriting standards when warranted based on market conditions, the historical performance of a category of the portfolio, or other external factors. Credit risk is also regularly evaluated for the impact of adverse economic and other events that increase the risk of default and the potential loss in the event of default to understand their impact on the Bank’s earnings and capital.

TABLE 10. COMPOSITION OF LOANS (1)

	March 31, 2015				December 31, 2014
(unaudited, dollars in thousands)	Amount		% of Loans		Amount		% of Loans
Commercial real estate:
Land and construction	$	288,075		5.9	$	262,643		6.4
Improved property		1,908,869		39.1		1,682,817		41.1
Total commercial real estate		2,196,944		45.0		1,945,460		47.5
Commercial and industrial		709,621		14.6		638,410		15.6
Residential real estate:
Land and construction		37,038		0.8		19,681		0.5
Other		1,202,125		24.6		909,089		22.2
Home equity		362,163		7.4		330,031		8.1
Consumer		365,830		7.5		244,095		6.0
Total portfolio loans		4,873,721		99.9		4,086,766		99.9
Loans held for sale		6,064		0.1		5,865		0.1
Total loans	$	4,879,785		100.0	$	4,092,631		100.0

(1) Loans are presented gross of the allowance for loan losses and net of unearned income, credit valuation adjustments, and unamortized net deferred loan fee income and loan origination costs.

Total loans increased $787.2 million compared to December 31, 2014 with $699.0 million from the ESB acquisition. Excluding the acquisition, the legacy portfolio increased $88.2 million, or 2.2% for the quarter and 8.7% annualized. Organic loan growth was achieved through $357.0 million in loan originations during the quarter, which represents a 30.6% increase over the first quarter in 2014. Loan growth was driven by increased business activity, additional lending personnel, focused marketing efforts, an expanded presence in our larger urban markets, a reduction in unscheduled payoffs and a less severe winter that did not stifle certain types of business activity as much as it did the prior year. Excluding the ESB acquisition, CRE improved property and C&I loans provided the most significant organic growth, respectively increasing 2.2% and 2.0% for the quarter. A portion of the increase in CRE improved property came from CRE land and construction loans upon completion of the project. Organic loan growth was achieved without sacrificing profitability, loan structure and credit quality of the loan portfolio despite a highly competitive lending market for high quality borrowers.

Total loan commitments, including loans approved but not closed, increased $244.8 million from December 2014 with $85.3 million from the ESB acquisition and the remainder due primarily to increases in CRE land and construction and home equity lines of credit originations.

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NON-PERFORMING ASSETS, IMPAIRED LOANS AND LOANS PAST DUE 90 DAYS OR MORE

Non-performing assets consist of non-accrual loans and TDRs, other real estate acquired through or in lieu of foreclosure, bank premises held for sale, and repossessed automobiles acquired to satisfy defaulted consumer loans.

TABLE 11. NON-PERFORMING ASSETS

(unaudited, dollars in thousands)	March 31, 2015			December 31, 2014
Non-accrual loans:
Commercial real estate - land and construction	$	1,463		$	1,488
Commercial real estate - improved property		22,143			20,227
Commercial and industrial		3,849			4,110
Residential real estate		11,249			10,329
Home equity		1,899			1,923
Consumer		771			741
Total non-accrual loans (1)		41,374			38,818
TDRs accruing interest:
Commercial real estate - land and construction		1,013			—
Commercial real estate - improved property		6,804			2,437
Commercial and industrial		351			329
Residential real estate		7,883			8,215
Home equity		718			740
Consumer		561			345
Total TDRs accruing interest (1)		17,330			12,066
Total non-performing loans	$	58,704		$	50,884
Other real estate owned and repossessed assets		6,226			5,082
Total non-performing assets	$	64,930		$	55,966
Non-performing loans/total loans		1.20	%		1.25	%
Non-performing assets/total assets		0.79	%		0.89	%
Non-performing assets/total loans, other real estate and repossessed assets		1.33	%		1.37	%

(1) TDRs on nonaccrual of $9.2 million and $5.4 million at March 31, 2015 and December 31, 2014, respectively, are included in total nonaccrual loans.

Non-performing loans, which consist of non-accrual loans and TDRs, increased $7.8 million, or 15.4% from December 31, 2014 to March 31, 2015 with $9.3 million from the ESB acquisition, while legacy non-performing loans decreased $1.5 million or 3.0%. Non-performing loans acquired, recognized at their acquisition date fair value of $9.7 million with an unpaid principal balance of $16.0 million primarily consist of three commercial relationships with an acquisition date aggregate fair value of $8.9 million. Organic non-performing loans decreased primarily from an unscheduled principal payment on one loan as well as other successful exit strategies and overall improvement in economic conditions in our markets. (Please see the Notes to the Consolidated Financial Statements for additional discussion.)

Other real estate owned and repossessed assets increased $1.1 million from December 31, 2014 to March 31, 2015, entirely due to the ESB acquisition.

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The following table presents past due and accruing loans excluding non-accrual and TDRs:

TABLE 12. PAST DUE AND ACCRUING LOANS EXCLUDING NON-ACCRUAL AND TDRs

	March 31,			December 31,
(unaudited, dollars in thousands)	2015			2014
Loans past due 90 days or more:
Commercial real estate - land and construction	$	—		$	71
Commercial real estate - improved property		—			—
Commercial and industrial		3			22
Residential real estate		74			1,306
Home equity		684			570
Consumer		270			319
Total loans past due 90 days or more		1,031			2,288
Loans past due 30 to 89 days:
Commercial real estate - land and construction		—			—
Commercial real estate - improved property		1,144			480
Commercial and industrial		848			216
Residential real estate		4,661			3,105
Home equity		2,433			2,524
Consumer		2,917			3,022
Total loans past due 30 to 89 days		12,003			9,347
Total 30 days or more	$	13,034		$	11,635
Loans past due 90 days or more and accruing to total portfolio loans		0.02	%		0.06	%
Loans past due 30-89 days and accruing to total portfolio loans		0.25	%		0.23	%

Loans past due 90 days or more and accruing interest excluding TDRs decreased $1.3 million or 54.9% from December 31, 2014 due to loans being placed on nonaccrual or migrated back to 30-89 days past due or current status. These loans continue to accrue interest because they are both well-secured and in the process of collection. Loans past due 30-89 days increased $2.7 million or 28.4% between December 31, 2014 and March 31, 2015 with $1.3 million from the ESB acquisition and $1.4 million from the legacy portfolio as certain legacy loans migrated from the 90 days past due category. Loans past due 30-89 days to total portfolio loans improved to 0.25% from 0.38% one year ago, representing a 34.2% decrease. This improvement in delinquency is the result of management’s focus on controlling early stage delinquency as well as improving economic conditions.

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ALLOWANCE FOR CREDIT LOSSES

Continued improvement in the credit quality of the pre-acquisition legacy portfolio resulted in a decrease in the allowance as supported by reductions in nearly all categories of legacy loans with adverse characteristics and continued improvement in economic conditions. The allowance was not affected by the acquired ESB loan portfolio, as these loans were recorded at fair value at the date of acquisition and credit quality adjustments of $21.3 million were reflected in the acquired loan portfolio at March 31, 2015.

The allowance for credit losses decreased $0.5 million from December 31, 2014 to March 31, 2015 as a result of a lower provision expense than net charge-offs, representing 0.91% of total loans at March 31, 2015 compared to 1.09% of total loans at December 31, 2014. However, if the credit component of the unaccreted loan mark on acquired loans of $24.2 million, including prior acquisitions, were added to the allowance, the resulting ratio provides greater coverage over total loans and is considered by management to be a better comparison of the adequacy of the allowance and the unaccreted credit mark to absorb potential losses.

The allowance for loans individually evaluated was relatively unchanged from December 31, 2014 to March 31, 2015, while the allowance for loans collectively evaluated decreased $0.4 million to $40.5 million due to lower charge-offs and continued improvement in delinquent, non-performing and classified and criticized loans.

The allowance for loan commitments of $0.5 million at March 31, 2015 was unchanged from December 31, 2014.

The allowance for credit losses by loan category, presented in Note 5 “Loans and the Allowance for Credit Losses” to the Consolidated Financial Statements, summarizes the impact of changes in various factors that affect the allowance for loan losses in each segment of the portfolio. The allowance for all segments is impacted by changes in loan balances, as well as changes in historical loss rates adjusted for qualitative factors such as economic conditions. The CRE and C&I segments of the portfolio are also impacted by changes in the risk grading distribution of the portfolio as well as the migration of CRE loans from land and construction to improved property upon the completion of construction.

The loss migration rate by internal risk grade is the primary factor for establishing the allowance for all commercial loans, and the portfolio segment loss history is the primary factor for establishing the allowance for residential real estate, home equity and consumer loans. The categorization of loans as non-performing is not as significant a factor as the loss migration rate by risk grade or the segment loss history, although certain non-performing loans that carry specific reserves are also typically considered classified under the internal risk grading system. Criticized and classified loans were $93.0 million, or 1.91% of total loans at March 31, 2015, which represents a decrease of 28.1% from $129.3 million or 3.33% of total loans at March 31, 2014, as credit quality continued to improve, enabling certain loans to be upgraded that were criticized but not classified throughout the economic downturn. The ESB acquisition increased criticized and classified loans by $9.6 million.

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Table 13 summarizes the allocation of the allowance for credit losses to each category of the loan portfolio. The decrease in the allowance for CRE land and construction loans is due primarily to that category of loans consisting of more multi-family apartment and other commercial building construction loans than land and residential development loans, which had higher loss rates during the recession but now represent a much smaller percentage of the category. The increase in the allowance for CRE improved property and home equity loans is primarily attributable to growth in those categories, while the decrease in the allowance for residential real estate and consumer loans reflects lower historical loss rates in each category.

TABLE 13. ALLOCATION OF THE ALLOWANCE FOR CREDIT LOSSES

(unaudited, dollars in thousands)	March 31, 2015		Percent of Total		December 31, 2014		Percent of Total
Allowance for loan losses:
Commercial real estate - land and construction	$	5,331		11.9	$	5,654		12.5
Commercial real estate - improved property		18,035		40.4		17,573		39.0
Commercial and industrial		9,011		20.2		9,063		20.1
Residential real estate		5,034		11.3		5,382		11.9
Home equity		2,497		5.6		2,329		5.2
Consumer		3,723		8.3		4,078		9.0
Deposit account overdrafts		542		1.2		575		1.3
Total allowance for loan losses	$	44,173		98.9	$	44,654		99.0
Allowance for loan commitments:
Commercial real estate - land and construction	$	178		0.4	$	194		0.4
Commercial real estate - improved property		18		0.0		10		0.0
Commercial and industrial		120		0.4		112		0.3
Residential real estate		13		0.0		9		0.0
Home equity		107		0.2		90		0.2
Consumer		42		0.1		40		0.1
Total allowance for loan commitments		478		1.1		455		1.0
Total allowance for credit losses	$	44,651		100.0	$	45,109		100.0

Although the allowance for credit losses is allocated as described in Table 13, the total allowance is available to absorb actual losses in any category of the loan portfolio. However, differences between management’s estimation of probable losses and actual incurred losses in subsequent periods for any category may necessitate future adjustments to the provision for loan losses applicable to the category. Management believes the allowance for credit losses is appropriate to absorb probable losses at March 31, 2015.

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DEPOSITS

TABLE 14. DEPOSITS

(unaudited, dollars in thousands)	March 31, 2015		December 31, 2014		$ Change		% Change
Deposits
Non-interest bearing demand	$	1,249,521	$	1,061,075	$	188,446		17.8
Interest bearing demand		1,199,801		885,037		314,764		35.6
Money market		1,018,184		954,957		63,227		6.6
Savings deposits		1,064,808		842,818		221,990		26.3
Certificates of deposit		1,883,888		1,305,096		578,792		44.3
Total deposits	$	6,416,202	$	5,048,983	$	1,367,219		27.1

Deposits, which represent WesBanco’s primary source of funds, are offered in various account forms at various rates through WesBanco’s 142 branches. The FDIC insures deposits up to $250,000 per account.

Total deposits increased by $1.4 billion or 27.1% during the first three months of 2015 primarily due to the ESB acquisition which provided $1.2 billion of additional deposits, while organic deposit growth was an annualized 10.8%. Interest bearing demand and non-interest bearing deposits increased 35.6% and 17.8%, respectively, while savings and money market deposits increased 26.3% and 6.6%, respectively, due to the ESB acquisition and corresponding marketing, incentive compensation paid to customers and employees, focused retail and business strategies to obtain more account relationships and customers’ preferences for shorter-term maturities coupled with initial deposits from bonus and royalty payments for Marcellus and Utica shale gas payments from energy companies in WesBanco’s southwestern Pennsylvania, eastern Ohio and northern West Virginia markets. Demand deposits, savings deposits and money market deposits acquired through the ESB acquisition were $391.1 million, $189.7 million and $38.3 million, respectively.

Certificates of deposit increased $578.8 million due primarily to the ESB acquisition. Certificates of deposit acquired from the ESB acquisition totaled $613.1 million, while organic balances declined 2.6% due to the effects of an overall corporate strategy designed to increase and remix retail deposit relationships with a focus on overall products that can be offered at a lower cost to the Bank. The decline is also impacted by lowered offered rates on maturing certificates of deposit and customer preferences for other non-maturity deposit types. WesBanco does not generally solicit brokered or other deposits out-of-market or over the internet, but does participate in the Certificate of Deposit Account Registry Services (CDARS^®) program and the Insured Cash Sweep (ICS^®) money market deposit program. CDARS^® balances totaled $304.7 million in total outstanding balances at March 31, 2015, of which $205.0 million represented one-way buys, compared to $283.0 million in total outstanding balances at December 31, 2014, of which $172.3 million represented one-way buys. ICS^® reciprocal balances totaled $143.3 million at March 31, 2015 compared to $117.1 million at December 31, 2014. Certificates of deposit greater than $250,000 were approximately $306.4 million at March 31, 2015 compared to $174.7 million at December 31, 2014. Certificates of deposit of $100,000 or more were approximately $974.9 million at March 31, 2015 compared to $706.1 million at December 31, 2014. The increase in jumbo certificates of deposit was primarily due to the acquisition. Certificates of deposit totaling approximately $1.2 billion at March 31, 2015 with a cost of 0.75% are scheduled to mature within the next 12 months. WesBanco will continue to focus on its core deposit strategies and improving its overall mix of transaction accounts to total deposits. From time to time the Bank may offer special promotions on certain certificates of deposit maturities and savings products based on competition, sales strategies, liquidity needs and wholesale borrowing costs, although in the current interest rate environment, CD rate offerings are generally equal or lower for all maturities and types compared to rates paid on existing CDs.

BORROWINGS

TABLE 15. BORROWINGS

(unaudited, dollars in thousands)	March 31, 2015		December 31, 2014		$ Change			% Change
Federal Home Loan Bank Borrowings	$	432,456	$	223,126	$	209,330			93.8
Other short-term borrowings		76,630		80,690		(4,060	)		(5.0	)
Junior subordinated debt owed to unconsolidated subsidiary trusts		142,269		106,176		36,093			34.0
Total	$	651,355	$	409,992	$	241,363			58.9

Borrowings are currently a less significant source of funding for WesBanco compared to total deposits. During the first quarter of 2015, FHLB borrowings increased $209.3 million due to the acquisition of ESB which provided $35.4 million in borrowings coupled with $173.9 million in new borrowings which were utilized to manage WesBanco’s normal liquidity needs, including loan and investment funding, as well as CD runoff.

Other short-term borrowings, which consist of securities sold under agreements to repurchase at March 31, 2015, but may also include federal funds purchased and other borrowings, were $76.6 million at March 31, 2015 compared to $80.7 million at December 31, 2014. The ESB acquisition also provided $36.1 million in junior subordinated debentures which the Federal Reserve Bank has approved for redemption, which will occur on the next payment due date of May 11, 2015. WesBanco has a revolving line of credit, which is a senior obligation of the parent company, with another financial institution. This line of credit, which accrues interest at an adjusted LIBOR rate, provides for aggregate unsecured borrowings of up to $25.0 million. There were no outstanding balances as of March 31, 2015 or December 31, 2014.

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OFF-BALANCE SHEET ARRANGEMENTS

WesBanco enters into financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, letters of credit, loans approved but not closed, overdraft limits and contingent obligations to purchase loans funded by other entities. Since many of these commitments expire unused or partially used, these commitments may not reflect future cash requirements. Please refer to Note 9, “Commitments and Contingent Liabilities,” of the Consolidated Financial Statements and the “Loans and Credit Risk” section of this MD&A for additional information.

CAPITAL RESOURCES

Shareholders’ equity was $1.1 billion at March 31, 2015 compared to $788.2 million at December 31, 2014. The increase was due primarily to $293.6 million of common stock issued in the ESB acquisition coupled with net income during the current three month period of $13.9 million and a $5.2 million increase in other comprehensive income, which were partially offset by the declaration of common shareholder dividends totaling $8.8 million for the three months ended March 31, 2015. WesBanco also increased its quarterly dividend rate to $0.23 per share in February, representing a 4.5% increase over the prior quarterly rate and a cumulative 64% increase over the last seventeen quarters.

Regulatory guidelines require bank holding companies and commercial banks to maintain certain minimum capital ratios and define companies as “well capitalized” that sufficiently exceed the minimum ratios. At March 31, 2015, regulatory capital levels for both the Bank and WesBanco were substantially greater than the minimum amounts needed to be considered “well capitalized” under the regulations. There are various legal limitations under federal and state laws that limit the payment of dividends from the Bank to WesBanco. As of March 31, 2015, under FDIC regulations, WesBanco could receive, without prior regulatory approval, a dividend of approximately $29.2 million from the Bank. WesBanco intends to continue to improve its consolidated and Bank capital ratios primarily from retaining a majority of its increasing earnings.

The following table summarizes risk-based capital amounts and ratios for WesBanco and the Bank for the periods indicated:

							March 31, 2015							December 31, 2014
(unaudited, dollars in thousands)	Minimum Value (1)			Well Capitalized  (2)			Amount		Ratio			Minimum Amount (1)		Amount		Ratio			Minimum Amount (1)
WesBanco, Inc. (3)
Tier 1 leverage		4.00	%		5.00	%	$	747,248		10.59	%	$	282,363	$	593,031		9.88	%	$	240,068
Common equity tier 1 (4)		4.50	%		6.50	%		609,248		11.49	%		238,684		N/A		N/A			N/A
Tier 1 capital to risk-weighted assets		6.00	%		8.00	%		747,248		14.09	%		318,245		593,031		13.76	%		172,357
Total capital to risk-weighted assets		8.00	%		10.00	%		791,455		14.92	%		424,327		638,064		14.81	%		344,714
WesBanco Bank, Inc.
Tier 1 leverage		4.00	%		5.00	%	$	676,262		9.66	%	$	279,973	$	516,689		8.63	%	$	239,533
Common equity tier 1 (4)		4.50	%		6.50	%		676,262		12.79	%		237,842		N/A		N/A			N/A
Tier 1 capital to risk-weighted assets		6.00	%		8.00	%		676,262		12.79	%		317,122		516,689		12.04	%		171,612
Total capital to risk-weighted assets		8.00	%		10.00	%		720,469		13.63	%		422,829		561,369		13.08	%		343,225

(1) Minimum to remain adequately capitalized. Minimums prior to January 1, 2015 were 4.00% for Tier 1 leverage and Tier 1 capital and 8.00% for total capital.

(2) Well-capitalized under prompt corrective action regulations.

(3) March 31, 2015 regulatory ratios for Tier 1 leverage, Tier 1 capital and total capital will be reduced by approximately 50, 66 and 66 basis points, respectively, after payoff of ESB’s trust preferred securities totaling $36.1 million on May 11, 2015.

(4) The Common Equity Tier 1 ratio (known as “CET 1”) is a new regulatory ratio as of March 31, 2015, as the regulatory agencies adopted new guidelines for such ratio as a result of international adoption of the BASEL III regulatory capital accords in 2013.

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LIQUIDITY RISK

Liquidity is defined as a financial institution’s capacity to meet its cash and collateral obligations at a reasonable cost. Liquidity risk is the risk that an institution’s financial condition or overall safety and soundness is adversely affected by an inability, or perceived inability, to meet its obligations. An institution’s obligations, and the funding sources to meet them, depend significantly on its business mix, balance sheet structure, and the cash flows of its on- and off-balance sheet obligations. Institutions confront various internal and external situations that can give rise to increased liquidity risk including funding mismatches, market constraints on funding sources, contingent liquidity events, changes in economic conditions, and exposure to credit, market, operation, legal and reputation risk. WesBanco actively manages liquidity risk through its ability to provide adequate funds to meet changes in loan demand, unexpected outflows in deposits and other borrowings as well as to take advantage of market opportunities and meet operating cash needs. This is accomplished by maintaining liquid assets in the form of securities, sufficient borrowing capacity and a stable core deposit base. Liquidity is centrally monitored by WesBanco’s Asset/Liability Committee (“ALCO”).

WesBanco determines the degree of required liquidity by the relationship of total holdings of liquid assets to the possible need for funds to meet unexpected deposit losses and/or loan demands. The ability to quickly convert assets to cash at a minimal loss is a primary function of WesBanco’s investment portfolio management. WesBanco believes its cash flow from the loan portfolio, the investment portfolio, and other sources, adequately meet its liquidity requirements. WesBanco’s net loans to assets ratio was 58.7% at March 31, 2015 and deposit balances funded 77.9% of assets.

The following table lists the sources of liquidity from assets at March 31, 2015 expected within the next year:

(in thousands)
Cash and cash equivalents	$	92,974
Securities with a maturity date within the next year		89,523
Projected payments and prepayments on mortgage-backed securities and collateralized mortgage obligations (1)		222,707
Callable securities		114,834
Loans held for sale		6,064
Accruing loans scheduled to mature		626,743
Normal loan repayments		529,717
Total sources of liquidity expected within the next year	$	1,682,562

(1) Projected prepayments are based on current prepayment speeds.

Deposit flows are another principal factor affecting overall WesBanco liquidity. Deposits totaled $6.4 billion at March 31, 2015. Deposit flows are impacted by current interest rates, products and rates offered by WesBanco versus various forms of competition, as well as customer behavior. Certificates of deposit scheduled to mature within one year totaled $1.2 billion at March 31, 2015, which includes jumbo regular certificates of deposit totaling $453.6 million with a weighted-average cost of 0.85%, and jumbo CDARS^® deposits of $195.5 million with a cost of 0.55%.

WesBanco maintains a line of credit with the FHLB as an additional funding source. Available credit with the FHLB was approximately $1.7 billion and $1.5 billion at March 31, 2015 and December 31, 2014, respectively. At March 31, 2015, the Bank had unpledged available-for-sale securities with an amortized cost of $647.8 million, a portion of which is an available liquidity source, or such securities could be pledged to secure additional FHLB borrowings. The FHLB requires securities to be specifically pledged to the FHLB and maintained in a FHLB-approved custodial arrangement if the member wishes to include such securities in the maximum borrowing capacity calculation. WesBanco has elected not to specifically pledge to the FHLB otherwise unpledged securities.

WesBanco participates in the Federal Reserve Bank’s Borrower-in-Custody Program (“BIC”) whereby WesBanco pledges certain consumer loans as collateral for borrowings. At March 31, 2015, WesBanco had a BIC line of credit totaling $146.9 million, none of which was outstanding. Alternative funding sources may include the utilization of existing overnight lines of credit with third party banks totaling $205.0 million, none of which was outstanding at March 31, 2015, along with seeking other lines of credit, borrowings under repurchase agreement lines, increasing deposit rates to attract additional funds, accessing brokered deposits, or selling securities available-for-sale or certain types of loans.

Other short-term borrowings of $76.6 million at March 31, 2015 consisted of overnight sweep checking accounts for large commercial customers. There has not been a significant fluctuation in the average deposit balance of the overnight sweep checking accounts during the first three months of 2015. The overnight sweep checking accounts require securities to be pledged equal to or greater than the average deposit balance in the related customer accounts.

The principal sources of parent company liquidity are dividends from the Bank, $31.8 million in cash and investments on hand, and a $25.0 million revolving line of credit with another financial institution, which did not have an outstanding balance at March 31, 2015. WesBanco is in compliance with all loan covenants. There are various legal limitations under federal and state laws that limit the payment of dividends from the Bank to the parent company. As of March 31, 2015, under FDIC and State of West Virginia regulations, WesBanco could receive, without prior regulatory approval, dividends of approximately $29.2 million from the Bank. Management believes these are appropriate levels of cash for the parent company given the current environment. Management continuously monitors the adequacy of parent company cash levels and sources of liquidity through the use of metrics that relate current cash levels to historical and forecasted cash inflows and outflows.

WesBanco had outstanding commitments to extend credit in the ordinary course of business approximating $1.5 billion and $1.2 billion at March 31, 2015 and December 31, 2014, respectively. On a historical basis, only a small portion of these commitments will result in an outflow of funds. Please refer to Note 9, “Commitments and Contingent Liabilities,” of the Consolidated Financial Statements and the “Loans and Credit Risk” section of this MD&A for additional information.

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Federal financial regulatory agencies previously have issued guidance to provide for sound practices for managing funding and liquidity risk and strengthening liquidity risk management practices. WesBanco maintains a comprehensive management process for identifying, measuring, monitoring, and controlling liquidity risk which is fully integrated into its risk management process. Management believes WesBanco has sufficient current liquidity to meet current obligations to borrowers, depositors and others as of March 31, 2015 and that WesBanco’s current liquidity risk management policies and procedures adequately address this guidance.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The disclosures set forth in this item are qualified by the section captioned “Forward-Looking Statements” included in Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations of this report.

MARKET RISK

The primary objective of WesBanco’s ALCO is to maximize net interest income within established policy parameters. This objective is accomplished through the management of balance sheet composition, market risk exposures arising from changing economic conditions and liquidity risk.

Market risk is defined as the risk of loss due to adverse changes in the fair value of financial instruments resulting from fluctuations in interest rates and equity prices. Management considers interest rate risk to be WesBanco’s most significant market risk. Interest rate risk is the exposure to adverse changes in net interest income due to changes in interest rates. The relative consistency of WesBanco’s net interest income is largely dependent on effective management of interest rate risk. As interest rates change in the market, rates earned on interest rate sensitive assets and rates paid on interest rate sensitive liabilities do not necessarily move concurrently. Differing rate sensitivities may arise because fixed rate assets and liabilities may not have the same maturities, or because variable rate assets and liabilities differ in the timing and/or the percentage of rate changes.

WesBanco’s ALCO, comprised of senior management from various functional areas, monitors and manages interest rate risk within Board approved policy limits. Interest rate risk is monitored primarily through the use of an earnings simulation model. The model is highly dependent on various assumptions, which change regularly as the balance sheet and market interest rates change. The key assumptions and strategies employed are analyzed bi-monthly and reviewed and documented by the ALCO.

The earnings simulation model projects changes in net interest income resulting from the effect of changes in interest rates. Forecasting changes in net interest income requires management to make certain assumptions regarding loan and security prepayment rates, bond call dates, and adjustments to non-maturing deposit rates, which may not necessarily reflect the manner in which actual yields and costs respond to changes in market interest rates. Assumptions used are based primarily on historical experience and current market rates. Security portfolio maturities and prepayments are assumed to be reinvested in similar instruments and callable bond forecasts are adjusted at varying levels of interest rates. While management believes such assumptions to be reasonable, there can be no assurance that assumed prepayment rates, callable bond forecasts and non-maturing deposit rates will approximate actual future results. Moreover, the net interest income sensitivity chart presented in Table 1, “Net Interest Income Sensitivity,” assumes the composition of interest sensitive assets and liabilities existing at the end of the period remains constant over the period being measured and also assumes that a particular change in interest rates is reflected uniformly across the yield curve, regardless of the duration of the maturity or re-pricing of specific assets and liabilities. Since the assumptions used in the model relative to changes in interest rates are uncertain, the simulation analysis may not be indicative of actual results. In addition, the analysis may not consider all actions that management could employ in response to changes in interest rates and various earning asset and costing liability balances.

Management is aware of the significant effect inflation or deflation has upon interest rates and ultimately upon financial performance. WesBanco’s ability to cope with inflation or deflation is best determined by analyzing its capability to respond to changing market interest rates, as well as its ability to manage the various elements of non-interest income and expense during periods of increasing or decreasing inflation or deflation. WesBanco monitors the level and mix of interest-rate sensitive assets and liabilities through ALCO in order to reduce the impact of inflation or deflation on net interest income. Management also controls the effects of inflation or deflation by conducting periodic reviews of the prices and terms of its various products and services, both in terms of the costs to offer the services as well as outside market influences upon such pricing, by introducing new products and services or reducing the availability of existing products and services, and by controlling overhead expenses.

Interest rate risk policy limits are determined by measuring the anticipated change in net interest income over a twelve month period assuming an immediate and sustained 100, 200 and 300 basis point increase or decrease in market interest rates compared to a stable rate environment or base model. WesBanco’s current policy limits this exposure to a reduction of 5.0%, 12.5% and 25% or less, respectively, of net interest income from the base model over a twelve month period. The table below shows WesBanco’s interest rate sensitivity at March 31, 2015 and December 31, 2014 assuming a 100, 200 and 300 basis point interest rate increase, compared to a base model. Due to the current low interest rate environment, particularly for short-term rates, the 200 and 300 basis point decreasing change is not calculated.

TABLE 1. NET INTEREST INCOME SENSITIVITY

Immediate Change in Interest Rates	Percentage Change in Net Interest Income from Base over One Year		ALCO
(basis points)	March 31, 2015	December 31, 2014	Guidelines
+300	0.9%	0.9%	(25.0%)
+200	1.9%	2.1%	(12.5%)
+100	1.8%	1.9%	(5.0%)
-100	(2.4%)	(1.8%)	(5.0%)

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As per the table above, the earnings simulation model at March 31, 2015 currently projects that net interest income for the next twelve month period would decrease by 2.4% if interest rates were to fall immediately by 100 basis points, compared to a decrease of 1.8% for the same scenario as of December 31, 2014.

For rising rate scenarios, net interest income would increase by 1.8%, 1.9%, and 0.9% if rates increased by 100, 200 and 300 basis points, respectively, as of March 31, 2015 compared to increases of 1.9%, 2.1% and 0.9% in a 100, 200 and 300 basis point increasing rate environment as of December 31, 2014.

The balance sheet is asset sensitive as of March 31, 2015, slightly less than at December 31, 2014, based upon changes in the mix of various earning assets and costing liabilities, 2015 loan and transaction deposit account growth, an increase in borrowings, the ESB transaction and certain changes in modeling assumptions. Should rates rise more rapidly and by a higher amount than currently anticipated in the short to intermediate term, overall asset sensitivity may be somewhat neutralized due to slower anticipated prepayment speeds and extension risk associated with residential mortgages and mortgage-backed securities. In addition, variable rate commercial loans with rate floors averaging 4.23% approximated $1.1 billion at March 31, 2015, which represented approximately 37% of commercial loans. In a 100 basis point rising rate environment, these loans would not as significantly re-price from their current floor level as compared to non-floor loans. However, not all such loans are currently priced at their floor. In the current lower spread and recently downward trending yield curve environment, WesBanco expects that the net interest margin may contract somewhat due to the acquisition and the continued low interest rate environment, until after rates begin to rise. A short-term rate increase is anticipated by late third quarter by a majority of economists and the Federal Reserve Board which should help the margin eventually improve assuming no earning asset or costing liability changes. Maturities of higher-costing certificates of deposit scheduled over the next year should help to mitigate potential compression from lower loan spreads and general loan re-pricing in an increasingly more competitive loan environment, along with anticipated loan growth in most loan categories. Of note, certificates of deposit totaling approximately $1.2 billion mature within the next year at an average cost of 0.75%.

The Bank has significant additional borrowing capacity with the FHLB of Pittsburgh, the Federal Reserve Bank of Cleveland, and various correspondent banks, and may utilize these funding sources as necessary to lengthen liabilities, help offset mismatches in various asset maturities, and manage short-term cash needs. CDARS^® and ICS^® deposits also continue to be used to lengthen maturities in certificates of deposit, and for customers seeking higher yielding instruments and to maintain deposit balances below insured limits.

Current balance sheet strategies to reduce the potential for margin compression in the current rate environment include:

• increasing total loans; primarily commercial and residential with fixed rate periods of between 3-15 years, or variable to a published index;

• investing available short-term liquidity;

• continuing marketing programs to increase consumer loans and transaction deposits versus certificates of deposit;

• reinvestment of securities cash flows into new loans as demand warrants, or into other investments such as short and intermediate-term CMO pay structures, lower coupon MBS, and mid-term tax-exempt municipal securities;

• paying down borrowings as they mature with available cash from deposit growth, or extending term borrowings at current lower rates to balance asset/liability mismatches; and

• extending a portion of CD maturities through the CDARS^® program and continuing to decrease offered rates on CDs and other costing deposit types.

As an alternative to the immediate rate shock analysis, the ALCO monitors interest rate risk by ramping or increasing interest rates 200 basis points gradually over a twelve month period. WesBanco’s current policy limits this exposure to 5.0% of net interest income from the base model for a twelve month period. Management believes that the ramping analysis reflects a more realistic movement of interest rates, whereas the immediate rate shock reflects a less likely scenario. The simulation model at March 31, 2015, using the 200 basis point increasing rate ramp analysis, projects that net interest income would increase 2.0% over the next twelve months, compared to a 1.9% increase at December 31, 2014.

WesBanco also periodically measures the economic value of equity, which is defined as the market value of tangible equity in various increasing and decreasing rate scenarios. At March 31, 2015, the market value of tangible equity as a percent of base in a 200 basis point rising rate environment indicates an increase of 2.6%, compared to a increase of 6.0% at December 31, 2014. In a 100 basis point falling rate environment, the model indicates a decrease of 3.6%, compared to a decrease of 11.0% as of December 31, 2014. WesBanco’s policy is to limit such change to minus 20% for a 200 basis point change in interest rates, as long as the Tier 1 leverage capital ratio is not forecasted to decrease below 5.0% as a result of the change. Balance sheet changes in loan and securities portfolios, new borrowings, transaction deposits and certificates of deposit, as well as certain other modeling assumptions, resulted in the change in equity market value from 2014.

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ITEM 4. CONTROLS AND PROCEDURES

EVALUATION OF DISCLOSURE CONTROLS AND PROCEDURES— WesBanco’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”) have concluded that WesBanco’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended), based on their evaluation of these controls and procedures as of the end of the period covered by this Form 10-Q, are effective at the reasonable assurance level as discussed below to ensure that information required to be disclosed by WesBanco in the reports it files under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC and that such information is accumulated and communicated to WesBanco’s management, including its principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

LIMITATIONS ON THE EFFECTIVENESS OF CONTROLS— WesBanco’s management, including the CEO and CFO, does not expect that WesBanco’s disclosure controls and internal controls will prevent all errors and all fraud. While WesBanco’s disclosure controls and procedures are designed to provide reasonable assurance of achieving their objective, no control system, no matter how well conceived and operated, can provide absolute assurance that the objectives of the control system are met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls.

CHANGES IN INTERNAL CONTROLS—There were no changes in WesBanco’s internal control over financial reporting that occurred during our fiscal quarter ended March 31, 2015 as required to be reported by paragraph (d) of Rules 13a-15 and 15d-15 under the Securities Exchange Act of 1934, that materially affected, or are reasonably likely to materially affect, WesBanco’s internal control over financial reporting.

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PART II – OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Litigation Related to the ESB Merger

On October 29, 2014, ESB and WesBanco entered into an Agreement and Plan of Merger (the “Merger Agreement”), providing for the merger of ESB with and into WesBanco, with WesBanco as the surviving corporation (the “Merger”). Each of ESB and WesBanco filed a definitive joint proxy statement/prospectus, dated as of December 11, 2014 (the “Joint Proxy Statement/Prospectus”), with the Securities and Exchange Commission in connection with the Merger. The Merger was consummated on February 10, 2015.

As previously reported by each of ESB and WesBanco on Current Reports on Form 8-K, each dated December 15, 2014 and filed on December 19, 2014, two putative class action complaints were filed by purported shareholders of ESB with respect to the Merger. One complaint was filed in the United States District Court for the Western District of Pennsylvania (the “Federal District Court”), and is captioned and numbered James Elliott vs. ESB Financial, Inc., et al., Case No. 2:14-cv-01689-MRH (the “Federal Lawsuit”). The other complaint was filed in the Court of Common Pleas of Lawrence County, Pennsylvania, and is captioned and numbered Randall Kress v. ESB Bank, Case No. 11185/14 CA (the “Lawrence County Lawsuit”). Both complaints alleged generally, among other things, that each member of ESB’s board of directors (the “Director Defendants”) breached their fiduciary duties in approving the Merger Agreement, that ESB and WesBanco aided and abetted such breaches of fiduciary duty and that the disclosure regarding the Merger contained in the Joint Proxy Statement/Prospectus was materially deficient.

On January 15, 2015, solely to avoid the costs, risks and uncertainties inherent in litigation, ESB, ESB Bank, WesBanco and the Director Defendants (ESB, ESB Bank, WesBanco and the Director Defendants, collectively the “Defendants”) entered into a Memorandum of Settlement (the “MOS”) with the respective plaintiffs (collectively, the “Plaintiffs”) regarding the settlement of both the Federal Lawsuit and the Lawrence County Lawsuit. Pursuant to the MOS, ESB and WesBanco agreed to file with the SEC and make publicly available to shareholders of ESB and WesBanco supplemental disclosures provided on Form 8-K and the Plaintiffs agreed to release ESB, ESB Bank, WesBanco and the Director Defendants from all claims related to the Merger Agreement and the Merger, subject to approval of the Federal District Court. If the court approves the settlement contemplated in the MOS, both the Federal Lawsuit and the Lawrence County Lawsuit will be dismissed with prejudice, and all claims that were or could have been brought challenging any aspect of the Merger, the Merger Agreement, and any disclosure made in connection therewith will be released and barred. Under the terms of the MOS, counsel for the Plaintiffs reserved the right to seek an award of attorneys’ fees and expenses. The Defendants have reserved the right to contest the fee and expense petition. The amount of any fees and expense awarded will ultimately be determined and approved by the court, and will not affect the amount of merger consideration paid by WesBanco. ESB or its successor or insurer will pay any fees and expenses awarded by the court. In the MOS, the parties have agreed to negotiate in good faith to prepare a stipulation of settlement to be filed with the court and other documentation as may be required to effectuate the settlement. There can be no assurance that the parties ultimately will enter into a stipulation of settlement or that the court will approve the settlement even if the parties were to enter into such stipulation. The proposed settlement contemplated by the MOS will become void in the event that the parties do not enter into such stipulation or the court does not approve the settlement.

The settlement did not affect the timing of the special meeting of shareholders of ESB held January 22, 2015 in Ellwood City, Pennsylvania to vote upon a proposal to adopt the Merger Agreement. Similarly, the settlement did not affect the timing of the special meeting of shareholders of WesBanco held January 22, 2015 in Wheeling, West Virginia to vote on a proposal to approve the issuance of shares of WesBanco common stock in connection with the Merger. The shareholders of both corporations approved the Merger. ESB and the other Defendants deny all of the allegations in the lawsuits and believe the disclosures previously included in the Joint Proxy Statement/Prospectus were appropriate under the law. Nevertheless, ESB and the other Defendants have agreed to settle the putative class action lawsuits in order to avoid the costs, disruptions and distraction of further litigation.

ESB and the other Defendants have vigorously denied, and continue to vigorously deny, that they have committed or aided and abetted in the commission of any violation of law or engaged in any of the wrongful acts that were alleged in the lawsuits, and expressly maintain that, to the extent applicable, they diligently and scrupulously complied with their fiduciary and other legal burdens and entered into the MOS solely to eliminate the burden and expense of further litigation and to put the claims that were or could have been asserted to rest. Nothing in the MOS or any stipulation of settlement shall be deemed an admission of the legal necessity or materiality under applicable laws of any of the disclosures set forth therein. WesBanco does not believe that a material loss related to these claims is reasonably possible.

Other Litigation

WesBanco is also involved in lawsuits, claims, investigations and proceedings which arise in the ordinary course of business. While any litigation contains an element of uncertainty, WesBanco does not believe that a material loss related to such proceedings or claims pending or known to be threatened is reasonably possible.

50

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

As of March 31, 2015, WesBanco had a current stock repurchase plan in which up to one million shares can be acquired. The plan was originally approved by the Board of Directors on March 21, 2007 and provides for shares to be repurchased for general corporate purposes, which may include a subsequent resource for potential acquisitions, shareholder dividend reinvestment and employee benefit plans. The timing, price and quantity of purchases are at the discretion of WesBanco, and the plan may be discontinued or suspended at any time. There were no repurchases during the first quarter of 2015, other than those for the KSOP and dividend reinvestment plans and a repurchase to facilitate the payoff of ESB’s ESOP loan.

The following table presents the monthly share purchase activity during the quarter ended March 31, 2015:

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans		Maximum Number of Shares that May Yet Be Purchased Under the Plans
Balance at December 31, 2014								378,286
January 1, 2015 to January 31, 2015
Open market repurchases		—		—		—		378,286
Other transactions (1)		13,627	$	33.78		N/A		N/A
February 1, 2015 to February 28, 2015
Open market repurchases		—		—		—		378,286
Other transactions (1)		1,601	$	32.61		N/A		N/A
March 1, 2015 to March 31, 2015
Open market repurchases		—		—		—		378,286
Other repurchases (2)		38,237	$	33.01		38,237		340,049
Other transactions (1)		1,707		32.94		N/A		N/A
First Quarter 2015
Open market repurchases		—		—		—		378,286
Other repurchases (2)		38,237	$	33.01		38,237		340,049
Other transactions (1)		16,935		33.59		N/A		N/A
Total		55,172	$	33.19		38,237		340,049

(1) Consists of open market purchases transacted in the KSOP and dividend reinvestment plans.

(2) Consists of repurchases to facilitate the payoff of ESB’s ESOP loan.

51

ITEM 6. EXHIBITS

10.1	Separation Agreement and Release and Waiver of Claims, dated October 29, 2014, by and among ESB Financial Corporation, ESB Bank, Charlotte A. Zuschlag, WesBanco, Inc. and WesBanco Bank, Inc. (incorporated by reference to Exhibit 10.1 of the Form 8-K filed by the Registrant with the Securities and Exchange Commission on February 10, 2015).*
10.2	Employment Agreement, dated October 29, 2014, by and between WesBanco Bank, Inc., Charlotte A. Zuschlag, and WesBanco, Inc. (incorporated by reference to Exhibit 10.2 of the Form 8-K filed by the Registrant with the Securities and Exchange Commission on February 10, 2015).*
10.3	Non-competition Agreement, dated October 29, 2014, by and between WesBanco, Inc., WesBanco Bank, Inc. and Charlotte A. Zuschlag. (incorporated by reference to Exhibit 10.3 of the Form 8-K filed by the Registrant with the Securities and Exchange Commission on February 10, 2015).*
10.4	Amended and Restated Employment Agreement, dated February 25, 2015, by and between WesBanco Bank, Inc., Bernard P. Twigg and WesBanco, Inc. (incorporated by reference to Form 10-K filed by the Registrant with the Securities and Exchange Commission on February 27, 2015).*
31.1	Certification of Chief Executive Officer of Periodic Report Pursuant to Rule 13a-15(e) or Rule 15d-15(e).
31.2	Certification of Chief Financial Officer of Periodic Report Pursuant to Rule 13a-15(e) or Rule 15d-15(e).
32.1	Certification Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	The following materials from WesBanco’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2015, formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Balance Sheets at March 31, 2015 and December 31, 2014, (ii) the Consolidated Statements of Comprehensive Income for the three months ended March 31, 2015 and 2014, (iii) the Consolidated Statements of Changes in Stockholders’ Equity for the three months ended March 31, 2015 and 2014, (iv) the Consolidated Statements of Cash Flows for the three months ended March 31, 2015 and 2014, and (v) the Notes to Consolidated Financial Statements.

* Indicates management compensatory plan, contract or arrangement.

52

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	WESBANCO, INC.
Date: May 7, 2015	/s/ Todd F. Clossin
	Todd F. Clossin
	President and Chief Executive Officer (Principal Executive Officer)
Date: May 7, 2015	/s/ Robert H. Young
	Robert H. Young
	Executive Vice President and Chief Financial Officer
	(Principal Financial and Accounting Officer)

53

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

OF PERIODIC REPORT PURSUANT TO RULE 13a-15(e) or RULE 15d-15(e)

I, Todd F. Clossin, certify that:

1. I have reviewed this Report on Form 10-Q of WesBanco, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing similar functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 7, 2015	/s/ Todd F. Clossin
	Todd F. Clossin
	President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

OF PERIODIC REPORT PURSUANT TO RULE 13a-15(e) or RULE 15d-15(e)

I, Robert H. Young, certify that:

1. I have reviewed this Report on Form 10-Q of WesBanco, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing similar functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 7, 2015	/s/ Robert H. Young
	Robert H. Young
	Executive Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of WesBanco, Inc. on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned, in the capacity and on the date indicated below, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to his knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of WesBanco, Inc.

Date: May 7, 2015	/s/ Todd F. Clossin
	Todd F. Clossin
	President and Chief Executive Officer
Date: May 7, 2015	/s/ Robert H. Young
	Robert H. Young
	Executive Vice President and Chief Financial Officer

The forgoing certifications are being furnished solely pursuant to Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code in accordance with Section 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section, and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934.

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Securities - Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Securities Gross Realized Gain Loss [Abstract]
Gross realized gains	$ 24	$ 195
Gross realized losses	(2)	(185)
Net realized gains (losses)	$ 22	$ 10

XML

Pension Plan - Components of Net Periodic Cost (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost - benefits earned during year	$ 827	$ 717
Interest cost on projected benefit obligation	1,201	1,170
Expected return on plan assets	(1,907)	(1,783)
Amortization of prior service cost	6	11
Amortization of net loss	784	363
Net periodic pension cost	$ 911	$ 478

XML

Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Past due loans excluded TDRs past due and accruing	90 days

XML

Pension Plan - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Minimum required pension plan contribution	$ 3.1
Partial credit balance utilized for minimum required contribution	34.9
Employer contribution	$ 7.5

XML

Loans and the Allowance for Credit Losses - Summary of Commercial Loans by Risk Grade (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Summary of commercial loans by risk grade
Commercial loans	$ 2,906,565	$ 2,583,870
Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	2,813,611	2,502,731
Criticized - Compromised [Member]
Summary of commercial loans by risk grade
Commercial loans	40,659	34,288
Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	52,295	46,851
Commercial Real Estate - Land and Construction [Member]
Summary of commercial loans by risk grade
Commercial loans	288,075	262,643
Commercial Real Estate - Land and Construction [Member] | Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	281,730	257,218
Commercial Real Estate - Land and Construction [Member] | Criticized - Compromised [Member]
Summary of commercial loans by risk grade
Commercial loans	3,653	3,645
Commercial Real Estate - Land and Construction [Member] | Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	2,692	1,780
Commercial Real Estate - Improved Property [Member]
Summary of commercial loans by risk grade
Commercial loans	1,908,869	1,682,817
Commercial Real Estate - Improved Property [Member] | Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	1,848,655	1,627,771
Commercial Real Estate - Improved Property [Member] | Criticized - Compromised [Member]
Summary of commercial loans by risk grade
Commercial loans	18,049	17,873
Commercial Real Estate - Improved Property [Member] | Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	42,165	37,173
Commercial and Industrial [Member]
Summary of commercial loans by risk grade
Commercial loans	709,621	638,410
Commercial and Industrial [Member] | Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	683,226	617,742
Commercial and Industrial [Member] | Criticized - Compromised [Member]
Summary of commercial loans by risk grade
Commercial loans	18,957	12,770
Commercial and Industrial [Member] | Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	$ 7,438	$ 7,898

XML

Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Numerator for both basic and diluted earnings per common share:
Net income	$ 13,887	$ 16,421	$ 16,421
Denominator:
Total average basic common shares outstanding	34,393,137	29,182,183
Effect of dilutive stock options and warrant	85,198	80,497
Total diluted average common shares outstanding	34,478,335	29,262,680
Earnings per common share - basic	$ 0.40	$ 0.56
Earnings per common share - diluted	$ 0.40	$ 0.56

XML

Fair Value Measurement - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Fair Value Disclosures [Abstract]
Fair value transfer amount	$ 0	$ 0

XML

Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Components of Accumulated Other Comprehensive Income

The activity in accumulated other comprehensive income for the three months ended March 31, 2015 and 2014 is as follows:

	Accumulated Other Comprehensive Income(1)
(unaudited, in thousands)	Defined Benefit Pension Plan			Unrealized Gains (Losses) on Securities Available-for-Sale			Unrealized Gains on Securities Transferred from Available-for- Sale to Held-to-Maturity			Total
Balance at December 31, 2014	$	(22,776	)	$	2,892		$	1,059		$	(18,825	)
Other comprehensive income before reclassifications		—			4,804			—			4,804
Amounts reclassified from accumulated other comprehensive income		475			(11	)		(67	)		397
Period change		475			4,793			(67	)		5,201
Balance at March 31, 2015	$	(22,301	)	$	7,685		$	992		$	(13,624	)
Balance at December 31, 2013	$	(7,966	)	$	(6,126	)	$	1,358		$	(12,734	)
Other comprehensive income before reclassifications		—			3,075			—			3,075
Amounts reclassified from accumulated other comprehensive income		236			49			(87	)		198
Period change		236			3,124			(87	)		3,273
Balance at March 31, 2014	$	(7,730	)	$	(3,002	)	$	1,271		$	(9,461	)

⁽¹⁾  All amounts are net of tax. Related income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 37%.

Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income

The following table provides details about amounts reclassified from accumulated other comprehensive income for the three months ended March 31, 2015 and 2014:

Details about Accumulated Other Comprehensive Income/(Loss) Components	Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) For the Three Months Ended March 31,						Affected Line Item in the Statement of Net Income
(unaudited, in thousands)	2015			2014
Securities available-for-sale (1):
Net securities (gains) losses reclassified into earnings		(18	)	$	78		Net securities gains (Non-interest income)
Related income tax expense (benefit)		7			(29	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(11	)		49
Securities held-to-maturity (1):
Amortization of unrealized gain transferred from available-for-sale		(107	)		(138	)	Interest and dividends on securities (Interest and dividend income)
Related income tax expense		40			51		Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(67	)		(87	)
Defined benefit pension plan (2):
Amortization of net loss and prior service costs		790			374		Employee benefits (Non-interest expense)
Related income tax benefit		(315	)		(138	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		475			236
Total reclassifications for the period		397		$	198

⁽¹⁾ For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income see Note 4, “Securities.”

⁽²⁾ Included in the computation of net periodic pension cost. See Note 6, “Pension Plan” for additional detail.

XML

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans and TDRs (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 41,374	$ 38,818
TDRs	26,554	17,486
Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	17,330	12,066
Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	9,224	5,420
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	1,463	1,488
TDRs	1,517	464
Commercial Real Estate - Land and Construction [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	1,013
Commercial Real Estate - Land and Construction [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	504	464
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	22,143	20,227
TDRs	12,203	4,287
Commercial Real Estate - Improved Property [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	6,804	2,437
Commercial Real Estate - Improved Property [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	5,399	1,850
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	23,606	21,715
TDRs	13,720	4,751
Commercial Real Estate [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	7,817	2,437
Commercial Real Estate [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	5,903	2,314
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	3,849	4,110
TDRs	727	807
Commercial and Industrial [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	351	329
Commercial and Industrial [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	376	478
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	11,249	10,329
TDRs	10,269	10,289
Residential Real Estate [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	7,883	8,215
Residential Real Estate [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	2,386	2,074
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	1,899	1,923
TDRs	1,003	985
Home Equity [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	718	740
Home Equity [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	285	245
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	771	741
TDRs	835	654
Consumer [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	561	345
Consumer [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	$ 274	$ 309

XML

Loans and the Allowance for Credit Losses - Schedule of Recorded Investment in Loans by Category (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 4,873,721	$ 4,086,766
Loans held for sale	6,064	5,865
Total loans	4,879,785	4,092,631
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	288,075	262,643
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,908,869	1,682,817
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	2,196,944	1,945,460
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	709,621	638,410
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,239,163	928,770
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	362,163	330,031
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 365,830	$ 244,095

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Securities - Schedule of Fair Value of Available-for-Sale and Held-to-Maturity Securities by Contractual Maturity (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, One Year or less	$ 87,447
Total available-for-sale securities, One to Five Years	118,637
Total available-for-sale securities, Five to Ten Years	95,372
Total available-for-sale securities, After Ten Years	58,055
Total available-for-sale securities, Mortgage-backed and Equity	1,294,753
Available-for-sale, Estimated Fair Value	1,654,264	917,424
Total held-to-maturity securities, One Year or less	2,852
Total held-to-maturity securities, One to Five Years	17,024
Total held-to-maturity securities, Five to Ten Years	266,172
Total held-to-maturity securities, After Ten Years	356,824
Total held-to-maturity securities, Mortgage-backed and Equity	129,971
Held-to-maturity securities, Fair value	772,843	619,617
Total securities, One Year or less	90,299
Total securities, One to Five Years	135,661
Total securities, Five to Ten Years	361,544
Total securities, After Ten Years, Fair value	414,879
Total securities, Mortgage- backed and Equity	1,424,724
Total securities, Fair value	2,427,107
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Agencies [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, Mortgage-backed and Equity	1,283,445
Available-for-sale, Estimated Fair Value	1,283,445	701,113
Total held-to-maturity securities, Mortgage-backed and Equity	129,971
Held-to-maturity securities, Fair value	129,971	82,020
Obligations of State and Political Subdivisions [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, One Year or less	5,254
Total available-for-sale securities, One to Five Years	33,049
Total available-for-sale securities, Five to Ten Years	21,417
Total available-for-sale securities, After Ten Years	35,933
Available-for-sale, Estimated Fair Value	95,653	91,433
Total held-to-maturity securities, One Year or less	2,852
Total held-to-maturity securities, One to Five Years	17,024
Total held-to-maturity securities, Five to Ten Years	259,231
Total held-to-maturity securities, After Ten Years	356,824
Held-to-maturity securities, Fair value	635,931	530,801
Corporate Debt Securities [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, One Year or less	82,193
Total available-for-sale securities, One to Five Years	62,312
Total available-for-sale securities, Five to Ten Years	33,658
Total available-for-sale securities, After Ten Years	4,927
Available-for-sale, Estimated Fair Value	183,090	25,996
Total held-to-maturity securities, Five to Ten Years	6,941
Held-to-maturity securities, Fair value	6,941	6,796
Obligations of Government Agencies [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, One to Five Years	23,276
Total available-for-sale securities, Five to Ten Years	40,297
Total available-for-sale securities, After Ten Years	17,195
Available-for-sale, Estimated Fair Value	80,768	87,736
Equity Securities [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, Mortgage-backed and Equity	11,308
Available-for-sale, Estimated Fair Value	$ 11,308	$ 11,146

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Loans and the Allowance for Credit Losses - TDRs Defaulted Later Restructured (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Defaults	Mar. 31, 2014 Defaults
Financing Receivable, Modifications [Line Items]
Number of Defaults	2	9
Recorded Investment	$ 69	$ 484
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Defaults		8
Recorded Investment		481
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Defaults	1	1
Recorded Investment	42	3
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Defaults	1
Recorded Investment	$ 27

XML

Comprehensive Income - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Percentage of Federal and State income tax rate	37.00%	37.00%	37.00%

XML

Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Current	$ 4,827,728	$ 4,042,825
30-59 Days Past Due	11,089	8,500
60-89 Days Past Due	6,002	9,976
90 Days or More Past Due	28,902	25,465
Total Past Due	45,993	43,941
Total Loans	4,873,721	4,086,766
90 Days or More Past Due and Accruing	1,031	2,288
Loans held for sale, current	6,064	5,865
Loans held for sale	6,064	5,865
Total loans, current	4,833,792	4,048,690
Total loans	4,879,785	4,092,631
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	286,883	261,356
30-59 Days Past Due		20
90 Days or More Past Due	1,192	1,267
Total Past Due	1,192	1,287
Total Loans	288,075	262,643
90 Days or More Past Due and Accruing		71
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	1,889,451	1,665,363
30-59 Days Past Due	1,093	961
60-89 Days Past Due	1,435	4,772
90 Days or More Past Due	16,890	11,721
Total Past Due	19,418	17,454
Total Loans	1,908,869	1,682,817
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	2,176,334	1,926,719
30-59 Days Past Due	1,093	981
60-89 Days Past Due	1,435	4,772
90 Days or More Past Due	18,082	12,988
Total Past Due	20,610	18,741
Total Loans	2,196,944	1,945,460
90 Days or More Past Due and Accruing		71
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	705,380	634,482
30-59 Days Past Due	916	1,834
60-89 Days Past Due	1,518	240
90 Days or More Past Due	1,807	1,854
Total Past Due	4,241	3,928
Total Loans	709,621	638,410
90 Days or More Past Due and Accruing	3	22
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	1,226,131	915,968
30-59 Days Past Due	4,981	1,237
60-89 Days Past Due	1,673	3,384
90 Days or More Past Due	6,378	8,181
Total Past Due	13,032	12,802
Total Loans	1,239,163	928,770
90 Days or More Past Due and Accruing	74	1,306
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	357,545	325,291
30-59 Days Past Due	1,982	1,877
60-89 Days Past Due	508	895
90 Days or More Past Due	2,128	1,968
Total Past Due	4,618	4,740
Total Loans	362,163	330,031
90 Days or More Past Due and Accruing	684	570
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	362,338	240,365
30-59 Days Past Due	2,117	2,571
60-89 Days Past Due	868	685
90 Days or More Past Due	507	474
Total Past Due	3,492	3,730
Total Loans	365,830	244,095
90 Days or More Past Due and Accruing	270	319
Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	9,209	7,562
30-59 Days Past Due	2,008	2,884
60-89 Days Past Due	2,319	5,552
90 Days or More Past Due	27,838	22,820
Total Past Due	32,165	31,256
Total Loans	41,374	38,818
TDRs Accruing Interest [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	16,536	11,016
30-59 Days Past Due	582	151
60-89 Days Past Due	179	542
90 Days or More Past Due	33	357
Total Past Due	794	1,050
Total Loans	17,330	12,066
Total Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	25,745	18,578
30-59 Days Past Due	2,590	3,035
60-89 Days Past Due	2,498	6,094
90 Days or More Past Due	27,871	23,177
Total Past Due	32,959	32,306
Total Loans	$ 58,704	$ 50,884

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Mergers and Acquisitions

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Mergers and Acquisitions

NOTE 2. MERGERS AND ACQUISITIONS

On February 10, 2015, WesBanco completed its acquisition of ESB Financial Corporation (“ESB”), and its wholly-owned banking subsidiary, ESB Bank (“ESB Bank”), a Pennsylvania-chartered stock savings bank headquartered in Ellwood City, Pennsylvania. The transaction expanded WesBanco’s franchise in the Pittsburgh region of western Pennsylvania from 16 to 38 offices.

On the acquisition date, ESB had $1.9 billion in assets, excluding goodwill, which included $700.8 million in loans, and $486.9 million in securities. The ESB acquisition was valued at $339.0 million, based on WesBanco’s closing stock price on February 10, 2015 of $32.00, and resulted in WesBanco issuing 9,178,531 shares of its common stock and $45.0 million in cash and other assets in exchange for ESB common stock. The assets and liabilities of ESB were recorded on WesBanco’s balance sheet at their preliminary estimated fair values as of February 10, 2015, the acquisition date, and ESB’s results of operations have been included in WesBanco’s Consolidated Statements of Income since that date. ESB was merged into WesBanco and ESB Bank was merged into WesBanco Bank, Inc. (the “Bank”) on February 10, 2015. Based on a preliminary purchase price allocation, WesBanco recorded $168.9 million in goodwill and $5.3 million in core deposit intangibles in its community banking segment. The fair values for the assets acquired and liabilities assumed are provisional amounts and are currently under review. Due to the timing of the ESB acquisition, WesBanco is still in the process of completing its fair market valuation, including the valuation of certain tangible and intangible assets as well as deferred income taxes. None of the goodwill is deductible for income tax purposes as the acquisition is accounted for as a tax-free exchange for tax purposes.

For the three months ended March 31, 2015, WesBanco recorded merger-related expenses of $9.7 million associated with the ESB acquisition. In 2014 WesBanco recognized $1.3 million in merger-related expenses in connection with the ESB acquisition.

The total of net interest income and non-interest income of the acquired operations of ESB was approximately $6.5 million and net income was approximately $2.7 million from February 11, 2015 through March 31, 2015. If the ESB acquisition had occurred on January 1, 2014, unaudited proforma net interest income and non-interest income of the combined entity for the three months ended March 31, 2014 would have totaled approximately $76.1 million and unaudited proforma net income would have been approximately $19.8 million as compared to proforma results of $78.2 million and $22.2 million, respectively, for the three months ended March 31, 2015. Merger-related expenses were excluded from the pro-forma results.

The purchase price of the ESB acquisition and resulting goodwill is summarized as follows:

(unaudited, in thousands)	February 10, 2015
Purchase Price:
Fair value of WesBanco shares issued, (net of equity issuance costs of $0.1 million)	$	293,933
Cash consideration for outstanding ESB shares, options and restricted stock		37,036
Settlement of pre-existing loan to ESB		8,000
Total purchase price	$	338,969
Fair value of:
Tangible assets acquired	$	1,859,865
Core deposit and other intangible assets acquired		5,346
Liabilities assumed		(1,703,616	)
Net cash received in the acquisition		8,485
Fair value of net assets acquired		170,080
Goodwill recognized	$	168,889

The following table presents the preliminary allocation of the purchase price of the assets acquired and the liabilities assumed at the date of acquisition, as WesBanco intends to finalize its accounting for the acquisition of ESB during 2015:

(unaudited, in thousands)	February 10, 2015
Assets
Cash and due from banks	$	8,485
Securities		486,891
Loans		700,849
Goodwill and other intangible assets		174,235
Accrued income and other assets (1)		672,125
Total Assets	$	2,042,585
Liabilities
Deposits	$	1,246,992
Borrowings		433,454
Accrued expenses and other liabilities		23,170
Total liabilities		1,703,616
Purchase price	$	338,969

⁽¹⁾  Includes receivables of $560.7 million from the sale of available-for-sale securities prior to the acquisition date.

At March 31, 2015 the carrying value of goodwill increased by $168.9 million from December 31, 2014 to $481.0 million.

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Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net effect on accumulated other comprehensive income for the period	$ 4,793	$ 3,124
Defined benefit pension plan (2):
Total reclassifications for the period	(397)	(198)
Amounts Reclassified From Accumulated Other Comprehensive Income/(Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net securities (gains) losses reclassified into earnings	(18)	78
Related income tax expense (benefit)	7	(29)
Net effect on accumulated other comprehensive income for the period	(11)	49
Amortization of unrealized gain transferred from available-for-sale	(107)	(138)
Related income tax expense	40	51
Net effect on accumulated other comprehensive income for the period	(67)	(87)
Defined benefit pension plan (2):
Amortization of net loss and prior service costs	790	374
Related income tax benefit	(315)	(138)
Net effect on accumulated other comprehensive income for the period	475	236
Total reclassifications for the period	$ 397	$ 198

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Loans and the Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	$ 44,654	$ 47,368	$ 47,368
Allowance for loan commitments, beginning balance	455	602	602
Total beginning allowance for credit losses	45,109	47,970	47,970
Provision for loan losses	1,266	2,256
Provision for loan commitments	23	(57)
Total provision for credit losses	1,289	2,199	2,199
Charge-offs	(2,517)	(4,735)
Recoveries	770	594
Net charge-offs	(1,747)	(4,141)
Allowance for loan losses, ending balance	44,173	45,483	44,654
Allowance for loan commitments, ending balance	478	545	455
Total ending allowance for credit losses	44,651	46,028	45,109
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	5,654	6,056	6,056
Allowance for loan commitments, beginning balance	194	301	301
Total beginning allowance for credit losses	5,848	6,357	6,357
Provision for loan losses	(323)	(1,051)
Provision for loan commitments	(16)	(8)
Total provision for credit losses	(339)	(1,059)
Allowance for loan losses, ending balance	5,331	5,005
Allowance for loan commitments, ending balance	178	293
Total ending allowance for credit losses	5,509	5,298
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	17,573	18,157	18,157
Allowance for loan commitments, beginning balance	10	62	62
Total beginning allowance for credit losses	17,583	18,219	18,219
Provision for loan losses	903	(509)
Provision for loan commitments	8	(53)
Total provision for credit losses	911	(562)
Charge-offs	(577)	(493)
Recoveries	136	120
Net charge-offs	(441)	(373)
Allowance for loan losses, ending balance	18,035	17,275
Allowance for loan commitments, ending balance	18	9
Total ending allowance for credit losses	18,053	17,284
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	9,063	9,925	9,925
Allowance for loan commitments, beginning balance	112	130	130
Total beginning allowance for credit losses	9,175	10,055	10,055
Provision for loan losses	(44)	2,128
Provision for loan commitments	8	3
Total provision for credit losses	(36)	2,131
Charge-offs	(122)	(2,276)
Recoveries	114	65
Net charge-offs	(8)	(2,211)
Allowance for loan losses, ending balance	9,011	9,842
Allowance for loan commitments, ending balance	120	133
Total ending allowance for credit losses	9,131	9,975
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	5,382	5,673	5,673
Allowance for loan commitments, beginning balance	9	5	5
Total beginning allowance for credit losses	5,391	5,678	5,678
Provision for loan losses	(208)	869
Provision for loan commitments	4
Total provision for credit losses	(204)	869
Charge-offs	(358)	(879)
Recoveries	218	109
Net charge-offs	(140)	(770)
Allowance for loan losses, ending balance	5,034	5,772
Allowance for loan commitments, ending balance	13	5
Total ending allowance for credit losses	5,047	5,777
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	2,329	2,017	2,017
Allowance for loan commitments, beginning balance	90	85	85
Total beginning allowance for credit losses	2,419	2,102	2,102
Provision for loan losses	747	153
Provision for loan commitments	17	1
Total provision for credit losses	764	154
Charge-offs	(589)	(155)
Recoveries	10	11
Net charge-offs	(579)	(144)
Allowance for loan losses, ending balance	2,497	2,026
Allowance for loan commitments, ending balance	107	86
Total ending allowance for credit losses	2,604	2,112
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	4,078	5,020	5,020
Allowance for loan commitments, beginning balance	40	19	19
Total beginning allowance for credit losses	4,118	5,039	5,039
Provision for loan losses	133	305
Provision for loan commitments	2
Total provision for credit losses	135	305
Charge-offs	(717)	(752)
Recoveries	229	227
Net charge-offs	(488)	(525)
Allowance for loan losses, ending balance	3,723	4,800
Allowance for loan commitments, ending balance	42	19
Total ending allowance for credit losses	3,765	4,819
Deposit Overdraft [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	575	520	520
Total beginning allowance for credit losses	575	520	520
Provision for loan losses	58	361
Total provision for credit losses	58	361
Charge-offs	(154)	(180)
Recoveries	63	62
Net charge-offs	(91)	(118)
Allowance for loan losses, ending balance	542	763
Total ending allowance for credit losses	$ 542	$ 763

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Mergers and Acquisitions - Calculation of Purchase Price and Resulting Goodwill Relating to ESB Acquisition (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Feb. 10, 2015
Fair value of:
Goodwill recognized	$ 168,900
ESB Financial Corporation [Member]
Purchase Price:
Fair value of WesBanco shares issued, (net of equity issuance costs of $0.1 million)		293,933
Cash consideration for outstanding ESB shares, options and restricted stock		37,036
Settlement of pre-existing loan to ESB		8,000
Total purchase price		338,969
Fair value of:
Tangible assets acquired		1,859,865
Core deposit and other intangible assets acquired		5,346
Liabilities assumed		(1,703,616)
Net cash received in the acquisition		8,485
Fair value of net assets acquired		170,080
Goodwill recognized		$ 168,889

XML

Mergers and Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended	0 Months Ended	2 Months Ended	3 Months Ended	1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Feb. 10, 2015	Mar. 31, 2015	Dec. 31, 2014	Feb. 10, 2015 Office
Business Acquisition [Line Items]
Loans	$ 700,800,000				$ 700,800,000
Goodwill increase	168,900,000
Net income	13,887,000	16,421,000	16,421,000
Unaudited proforma net interest income and non - interest income	78,200,000	76,100,000
Approximate unaudited proforma net income	22,200,000	19,800,000
Carrying value of goodwill	481,000,000				481,000,000
ESB Financial Corporation [Member]
Business Acquisition [Line Items]
Total Assets				1,900,000,000			1,900,000,000
Loans				700,849,000			700,849,000
Securities				486,891,000			486,891,000
Value of acquisition				338,969,000
Common shares issued				9,178,531
Cash consideration for outstanding shares				45,000,000
Goodwill increase				168,889,000
Purchase price allocation in core deposit intangible				5,346,000			5,346,000
Closing stock price				$ 32.00			32.00
Merger related expense	9,700,000					1,300,000
Total of net interest income and non-interest income					6,500,000
Net income					$ 2,700,000
Pennsylvania
Business Acquisition [Line Items]
Number of offices					38		16
Common Stock [Member]
Business Acquisition [Line Items]
Common shares issued	9,178,531
Common Stock [Member] | ESB Financial Corporation [Member]
Business Acquisition [Line Items]
Common shares issued				9,178,531

XML

Fair Value Measurement - Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	$ 1,654,264	$ 917,424
Other real estate owned and repossessed assets	6,226	5,082
Loans held for sale	6,064	5,865
Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	1,654,264	917,424
Total recurring fair value measurements	1,654,264	917,424
Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	4,533	6,024
Other real estate owned and repossessed assets	6,226	5,082
Loans held for sale	6,064	5,865
Total nonrecurring fair value measurements	16,823	16,971
Obligations of Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	80,768	87,736
Obligations of Government Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	80,768	87,736
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	1,283,445	701,113
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	1,283,445	701,113
Obligations of State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	95,653	91,433
Obligations of State and Political Subdivisions [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	95,653	91,433
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	183,090	25,996
Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	183,090	25,996
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	11,308	11,146
Equity Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	11,308	11,146
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	8,538	8,440
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	8,538	8,440
Total recurring fair value measurements	8,538	8,440
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	8,538	8,440
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	1,645,726	908,984
Loans held for sale	6,064	5,865
Significant Other Observable Inputs (Level 2) [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	1,645,726	908,984
Total recurring fair value measurements	1,645,726	908,984
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	6,064	5,865
Total nonrecurring fair value measurements	6,064	5,865
Significant Other Observable Inputs (Level 2) [Member] | Obligations of Government Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	80,768	87,736
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	1,283,445	701,113
Significant Other Observable Inputs (Level 2) [Member] | Obligations of State and Political Subdivisions [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	95,653	91,433
Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	183,090	25,996
Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total securities - available-for-sale	2,770	2,706
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	4,533	6,024
Other real estate owned and repossessed assets	6,226	5,082
Total nonrecurring fair value measurements	$ 10,759	$ 11,106

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Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	$ 3,701	$ 3,798
Allowance for loans collectively evaluated for impairment	40,472	40,856
Allowance for loan commitments	478	455	545	602
Total allowance for credit losses	44,651	45,109	46,028	47,970
Individually evaluated for impairment	12,544	14,313
Collectively evaluated for impairment	4,861,177	4,072,453
Total Loans	4,873,721	4,086,766
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	5,331	5,654
Allowance for loan commitments	178	194	293	301
Total allowance for credit losses	5,509	5,848	5,298	6,357
Collectively evaluated for impairment	288,075	262,643
Total Loans	288,075	262,643
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	2,828	2,765
Allowance for loans collectively evaluated for impairment	15,207	14,808
Allowance for loan commitments	18	10	9	62
Total allowance for credit losses	18,053	17,583	17,284	18,219
Individually evaluated for impairment	9,822	11,469
Collectively evaluated for impairment	1,899,047	1,671,348
Total Loans	1,908,869	1,682,817
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	873	1,033
Allowance for loans collectively evaluated for impairment	8,138	8,030
Allowance for loan commitments	120	112	133	130
Total allowance for credit losses	9,131	9,175	9,975	10,055
Individually evaluated for impairment	2,722	2,844
Collectively evaluated for impairment	706,899	635,566
Total Loans	709,621	638,410
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	5,034	5,382
Allowance for loan commitments	13	9	5	5
Total allowance for credit losses	5,047	5,391	5,777	5,678
Collectively evaluated for impairment	1,239,163	928,770
Total Loans	1,239,163	928,770
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	2,497	2,329
Allowance for loan commitments	107	90	86	85
Total allowance for credit losses	2,604	2,419	2,112	2,102
Collectively evaluated for impairment	362,163	330,031
Total Loans	362,163	330,031
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	3,723	4,078
Allowance for loan commitments	42	40	19	19
Total allowance for credit losses	3,765	4,118	4,819	5,039
Collectively evaluated for impairment	365,830	244,095
Total Loans	365,830	244,095
Deposit Overdraft [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	542	575
Total allowance for credit losses	$ 542	$ 575	$ 763	$ 520

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Mergers and Acquisitions - Calculation of Purchase Price and Resulting Goodwill Relating to ESB Acquisition (Parenthetical) (Detail) (ESB Financial Corporation [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	Feb. 10, 2015
ESB Financial Corporation [Member]
Business Acquisition [Line Items]
Equity issuance costs	$ 0.1

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Mergers and Acquisitions - Summary of Fair Value of Net Assets that Wesbanco Acquired from ESB (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Feb. 10, 2015
Assets
Loans	$ 700,800
ESB Financial Corporation [Member]
Assets
Cash and due from banks		8,485
Securities		486,891
Loans		700,849
Goodwill and other intangible assets		174,235
Accrued income and other assets		672,125
Total Assets		2,042,585
Liabilities
Deposits		1,246,992
Borrowings		433,454
Accrued expenses and other liabilities		23,170
Total liabilities		1,703,616
Purchase price		$ 338,969

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of presentation — The accompanying unaudited interim financial statements of WesBanco, Inc. and its consolidated subsidiaries (“WesBanco”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2014.

WesBanco’s interim financial statements have been prepared following the significant accounting policies disclosed in Note 1 of the Notes to the Consolidated Financial Statements of its 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission. In the opinion of management, the accompanying interim financial information reflects all adjustments, including normal recurring adjustments, necessary to present fairly WesBanco’s financial position and results of operations for each of the interim periods presented. Results of operations for interim periods are not necessarily indicative of the results of operations that may be expected for a full year.

Recent accounting pronouncements — In April 2015, the Financial Accounting Standards Board (the “FASB”) issued an Accounting Standards Update (“ASU”) (ASU 2015-05) that provides guidance on when to account for a cloud computing arrangement as a software license. The guidance applies only to internal-use software that a customer obtains access to in a hosting arrangement if both of the following criteria are met: (1) The customer has the contractual right to take possession of the software at any time during the hosting period without significant penalty, (2) it is feasible for the customer to either run the software on its own hardware or contract with another party unrelated to the vendor to host the software. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on WesBanco’s Consolidated Financial Statements.

In February 2015, the FASB issued ASU 2015-02 that revised the consolidation model, requiring reporting entities to reevaluate whether they should consolidate certain legal entities under the revised model. The amendments in this Update modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities, and eliminate the presumption that a general partner should consolidate and affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships. The pronouncement also provides for a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on WesBanco’s Consolidated Financial Statements.

In August 2014, the FASB issued ASU 2014-14 related to the classification of certain government-guaranteed mortgage loans upon foreclosure. The amendments in this update require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) The loan has a government guarantee that is not separable from the loan before foreclosure, (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based upon the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014 and may be adopted under either a modified retrospective transition method or a prospective transition method. However, the same method of transition as elected under ASU 2014-04 must be applied. Early adoption is permitted. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In June 2014, the FASB issued ASU 2014-11 related to repurchase-to-maturity transactions, repurchase financing and disclosures. The pronouncement changes the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowing accounting, which is consistent with the accounting for other repurchase agreements. The pronouncement also requires two new disclosures. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The second disclosure provides increased transparency about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. Early adoption is not permitted. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

        In May 2014, the FASB issued ASU 2014-09 related to the recognition of revenue from contracts with customers. The new revenue pronouncement creates a single source of revenue guidance for all companies in all industries and is more principles-based than current revenue guidance. The pronouncement provides a five-step model for a company to recognize revenue when it transfers control of goods or services to customers at an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services. The five steps are (1) identify the contract with the customer, (2) identify the separate performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the separate performance obligations and (5) recognize revenue when each performance obligation is satisfied. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016 using either a full retrospective approach for all periods presented in the period of adoption or a modified retrospective approach. Early adoption is not permitted. In April 2015, the FASB issued an exposure draft of a proposed ASU that would delay by one year the effective date of ASU 2014-11. Under the proposal, the standard would be effective for annual reporting periods beginning after December 15, 2017 and interim periods therein. WesBanco is currently evaluating the impact of the adoption of this pronouncement on its Consolidated Financial Statements.

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Mergers and Acquisitions - Summary of Fair Value of Net Assets that Wesbanco Acquired from ESB (Parenthetical) (Detail) (ESB Financial Corporation [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2015
ESB Financial Corporation [Member]
Business Acquisition [Line Items]
Recievables from sale of available-for-sale securities	$ 560.7

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Securities - Schedule of Unrealized Losses on Investment Securities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015 Security	Dec. 31, 2014 Security
Obligations of Government Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 17,953	$ 19,362
Less than 12 months, Unrealized Losses	(33)	(77)
Less than 12 months, Number of Securities	3	5
12 months or more, Fair Value		19,757
12 months or more, Unrealized Losses		(238)
12 months or more, Number of Securities	0	4
Fair Value, Total	17,953	39,119
Unrealized Losses, Total	(33)	(315)
Number of Securities Total	3	9
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	260,103	78,786
Less than 12 months, Unrealized Losses	(681)	(386)
Less than 12 months, Number of Securities	55	19
12 months or more, Fair Value	168,693	240,055
12 months or more, Unrealized Losses	(3,523)	(6,618)
12 months or more, Number of Securities	32	43
Fair Value, Total	428,796	318,841
Unrealized Losses, Total	(4,204)	(7,004)
Number of Securities Total	87	62
Obligations of State and Political Subdivisions [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	68,439	12,615
Less than 12 months, Unrealized Losses	(450)	(96)
Less than 12 months, Number of Securities	79	15
12 months or more, Fair Value	20,777	61,548
12 months or more, Unrealized Losses	(445)	(952)
12 months or more, Number of Securities	31	93
Fair Value, Total	89,216	74,163
Unrealized Losses, Total	(895)	(1,048)
Number of Securities Total	110	108
Corporate Debt Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	53,122	2,969
Less than 12 months, Unrealized Losses	(113)	(31)
Less than 12 months, Number of Securities	16	1
12 months or more, Fair Value	1,978	4,573
12 months or more, Unrealized Losses	(8)	(137)
12 months or more, Number of Securities	1	2
Fair Value, Total	55,100	7,542
Unrealized Losses, Total	(121)	(168)
Number of Securities Total	17	3
Total Temporarily Impaired Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	399,617	113,732
Less than 12 months, Unrealized Losses	(1,277)	(590)
Less than 12 months, Number of Securities	153	40
12 months or more, Fair Value	191,448	325,933
12 months or more, Unrealized Losses	(3,976)	(7,945)
12 months or more, Number of Securities	64	142
Fair Value, Total	591,065	439,665
Unrealized Losses, Total	$ (5,253)	$ (8,535)
Number of Securities Total	217	182

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Loans and the Allowance for Credit Losses - Summary of Other Real Estate Owned and Repossessed Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Other real estate owned	$ 5,886	$ 4,920
Repossessed assets	340	162
Total other real estate owned and repossessed assets	$ 6,226	$ 5,082

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks, including interest bearing amounts of $17,871 and $8,405, respectively	$ 92,974	$ 94,002
Securities:
Available-for-sale, at fair value	1,654,264	917,424
Held-to-maturity (fair values of $772,843 and $619,617, respectively)	743,925	593,670
Total securities	2,398,189	1,511,094
Loans held for sale	6,064	5,865
Portfolio loans, net of unearned income	4,873,721	4,086,766
Allowance for loan losses	(44,173)	(44,654)
Net portfolio loans	4,829,548	4,042,112
Premises and equipment, net	110,900	93,135
Accrued interest receivable	25,232	18,481
Goodwill and other intangible assets, net	493,176	319,506
Bank-owned life insurance	153,991	123,298
Other assets	123,205	89,072
Total Assets	8,233,279	6,296,565
Deposits:
Non-interest bearing demand	1,249,521	1,061,075
Interest bearing demand	1,199,801	885,037
Money market	1,018,184	954,957
Savings deposits	1,064,808	842,818
Certificates of deposit	1,883,888	1,305,096
Total deposits	6,416,202	5,048,983
Federal Home Loan Bank borrowings	432,456	223,126
Other short-term borrowings	76,630	80,690
Junior subordinated debt owed to unconsolidated subsidiary trusts	142,269	106,176
Total borrowings	651,355	409,992
Accrued interest payable	2,297	1,620
Other liabilities	72,041	47,780
Total Liabilities	7,141,895	5,508,375
SHAREHOLDERS' EQUITY
Preferred stock, no par value; 1,000,000 shares authorized; none outstanding
Common stock, $2.0833 par value; 50,000,000 shares authorized; 38,546,042 and 29,367,511 issued in 2015 and 2014, respectively; outstanding: 38,449,812 and 29,298,188 shares in 2015 and 2014, respectively	80,304	61,182
Capital surplus	520,596	244,661
Retained earnings	509,622	504,578
Treasury stock (96,230 and 69,323 shares in 2015 and 2014, respectively, at cost)	(3,061)	(2,151)
Accumulated other comprehensive loss	(13,624)	(18,825)
Deferred benefits for directors	(2,453)	(1,255)
Total Shareholders' Equity	1,091,384	788,190
Total Liabilities and Shareholders' Equity	$ 8,233,279	$ 6,296,565

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Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Troubled debt restructuring threshold	$ 1

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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Common dividends declared, per share	$ 0.23	$ 0.22
Retained Earnings [Member]
Common dividends declared, per share	$ 0.23	$ 0.22

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Fair Value Measurement - Estimates Fair Value of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Financial Assets
Cash and due from banks	$ 92,974	$ 94,002	$ 175,196	$ 95,551
Securities available-for-sale	1,654,264	917,424
Securities held-to-maturity	743,925	593,670
Net loans	4,829,548	4,042,112
Loans held for sale	6,064	5,865
Accrued interest receivable	25,232	18,481
Bank-owned life insurance	153,991	123,298
Financial Liabilities
Deposits	6,416,202	5,048,983
Federal Home Loan Bank borrowings	432,456	223,126
Other borrowings	76,630	80,690
Junior subordinated debt	142,269	106,176
Accrued interest payable	2,297	1,620
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets
Cash and due from banks	92,974	94,002
Securities available-for-sale	8,538	8,440
Accrued interest receivable	25,232	18,481
Bank-owned life insurance	153,991	123,298
Financial Liabilities
Deposits	4,532,314	3,743,887
Other borrowings	73,589	77,534
Accrued interest payable	2,297	1,620
Significant Other Observable Inputs (Level 2) [Member]
Financial Assets
Securities available-for-sale	1,645,726	908,984
Securities held-to-maturity	772,088	618,895
Loans held for sale	6,064	5,865
Financial Liabilities
Deposits	1,891,185	1,312,941
Federal Home Loan Bank borrowings	435,089	225,456
Other borrowings	3,032	3,162
Junior subordinated debt	116,070	79,212
Significant Unobservable Inputs (Level 3) [Member]
Financial Assets
Securities held-to-maturity	755	722
Net loans	4,820,779	4,047,648
Carrying Amount [Member]
Financial Assets
Cash and due from banks	92,974	94,002
Securities available-for-sale	1,654,264	917,424
Securities held-to-maturity	743,925	593,670
Net loans	4,829,548	4,042,112
Loans held for sale	6,064	5,865
Accrued interest receivable	25,232	18,481
Bank-owned life insurance	153,991	123,298
Financial Liabilities
Deposits	6,416,202	5,048,983
Federal Home Loan Bank borrowings	432,456	223,126
Other borrowings	76,630	80,690
Junior subordinated debt	142,269	106,176
Accrued interest payable	2,297	1,620
Fair Value Estimate [Member]
Financial Assets
Cash and due from banks	92,974	94,002
Securities available-for-sale	1,654,264	917,424
Securities held-to-maturity	772,843	619,617
Net loans	4,820,779	4,047,648
Loans held for sale	6,064	5,865
Accrued interest receivable	25,232	18,481
Bank-owned life insurance	153,991	123,298
Financial Liabilities
Deposits	6,423,499	5,056,828
Federal Home Loan Bank borrowings	435,089	225,456
Other borrowings	76,621	80,696
Junior subordinated debt	116,070	79,212
Accrued interest payable	$ 2,297	$ 1,620

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Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	$ 1,642,125	$ 912,850
Available-for-sale, Gross Unrealized Gains	16,306	11,771
Available-for-sale, Gross Unrealized Losses	(4,167)	(7,197)
Available-for-sale, Estimated Fair Value	1,654,264	917,424
Held-to-maturity, Amortized Cost	743,925	593,670
Held-to-maturity, Gross Unrealized Gains	30,004	27,285
Held-to-maturity, Gross Unrealized Losses	(1,086)	(1,338)
Held-to-maturity securities, Fair value	772,843	619,617
Total securities, Amortized Cost	2,386,050	1,506,520
Total securities, Gross Unrealized Gains	46,310	39,056
Total securities, Gross Unrealized Losses	(5,253)	(8,535)
Total securities, Estimated Fair Value	2,427,107	1,537,041
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	1,279,350	703,535
Available-for-sale, Gross Unrealized Gains	8,091	4,336
Available-for-sale, Gross Unrealized Losses	(3,996)	(6,758)
Available-for-sale, Estimated Fair Value	1,283,445	701,113
Held-to-maturity, Amortized Cost	126,935	79,004
Held-to-maturity, Gross Unrealized Gains	3,244	3,262
Held-to-maturity, Gross Unrealized Losses	(208)	(246)
Held-to-maturity securities, Fair value	129,971	82,020
Obligations of State and Political Subdivisions [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	89,977	86,073
Available-for-sale, Gross Unrealized Gains	5,693	5,365
Available-for-sale, Gross Unrealized Losses	(17)	(5)
Available-for-sale, Estimated Fair Value	95,653	91,433
Held-to-maturity, Amortized Cost	610,249	507,927
Held-to-maturity, Gross Unrealized Gains	26,560	23,917
Held-to-maturity, Gross Unrealized Losses	(878)	(1,043)
Held-to-maturity securities, Fair value	635,931	530,801
Corporate Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	182,781	25,974
Available-for-sale, Gross Unrealized Gains	430	141
Available-for-sale, Gross Unrealized Losses	(121)	(119)
Available-for-sale, Estimated Fair Value	183,090	25,996
Held-to-maturity, Amortized Cost	6,741	6,739
Held-to-maturity, Gross Unrealized Gains	200	106
Held-to-maturity, Gross Unrealized Losses		(49)
Held-to-maturity securities, Fair value	6,941	6,796
Obligations of Government Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	79,315	86,964
Available-for-sale, Gross Unrealized Gains	1,486	1,087
Available-for-sale, Gross Unrealized Losses	(33)	(315)
Available-for-sale, Estimated Fair Value	80,768	87,736
Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	1,631,423	902,546
Available-for-sale, Gross Unrealized Gains	15,700	10,929
Available-for-sale, Gross Unrealized Losses	(4,167)	(7,197)
Available-for-sale, Estimated Fair Value	1,642,956	906,278
Equity Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	10,702	10,304
Available-for-sale, Gross Unrealized Gains	606	842
Available-for-sale, Estimated Fair Value	$ 11,308	$ 11,146

XML

Business Segments - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015 Segment	Mar. 31, 2014
Segment Reporting Information [Line Items]
Operating segments	2
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Market value of assets held by trust and investment services segment	3,900,000,000	$ 3,800,000,000
Total non-fiduciary assets of the trust and investment services segment	3,700,000	$ 4,000,000

XML

Loans and the Allowance for Credit Losses (Tables)

3 Months Ended

Mar. 31, 2015

Receivables [Abstract]

Schedule of Recorded Investment in Loans by Category

The recorded investment in loans is presented in the Consolidated Balance Sheets net of deferred loan fees and costs of $2.2 million and $2.4 million at March 31, 2015 and December 31, 2014, respectively.

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Commercial real estate:
Land and construction	$	288,075	$	262,643
Improved property		1,908,869		1,682,817
Total commercial real estate		2,196,944		1,945,460
Commercial and industrial		709,621		638,410
Residential real estate		1,239,163		928,770
Home equity		362,163		330,031
Consumer		365,830		244,095
Total portfolio loans		4,873,721		4,086,766
Loans held for sale		6,064		5,865
Total loans	$	4,879,785	$	4,092,631

Summary of Changes in Allowance for Credit Losses

The following tables summarize changes in the allowance for credit losses applicable to each category of the loan portfolio:

	Allowance for Credit Losses By Category For the Three Months Ended March 31, 2015 and 2014
(unaudited, in thousands)	Commercial Real Estate- Land and Construction			Commercial Real Estate- Improved Property			Commercial & Industrial			Residential Real Estate			Home Equity			Consumer			Deposit Overdraft			Total
Balance at December 31, 2014:
Allowance for loan losses	$	5,654		$	17,573		$	9,063		$	5,382		$	2,329		$	4,078		$	575		$	44,654
Allowance for loan commitments		194			10			112			9			90			40			—			455
Total beginning allowance for credit losses		5,848			17,583			9,175			5,391			2,419			4,118			575			45,109
Provision for credit losses:
Provision for loan losses		(323	)		903			(44	)		(208	)		747			133			58			1,266
Provision for loan commitments		(16	)		8			8			4			17			2			—			23
Total provision for credit losses		(339	)		911			(36	)		(204	)		764			135			58			1,289
Charge-offs		—			(577	)		(122	)		(358	)		(589	)		(717	)		(154	)		(2,517	)
Recoveries		—			136			114			218			10			229			63			770
Net charge-offs		—			(441	)		(8	)		(140	)		(579	)		(488	)		(91	)		(1,747	)
Balance at March 31, 2015:
Allowance for loan losses		5,331			18,035			9,011			5,034			2,497			3,723			542			44,173
Allowance for loan commitments		178			18			120			13			107			42			—			478
Total ending allowance for credit losses	$	5,509		$	18,053		$	9,131		$	5,047		$	2,604		$	3,765		$	542		$	44,651
Balance at December 31, 2013:
Allowance for loan losses	$	6,056		$	18,157		$	9,925		$	5,673		$	2,017		$	5,020		$	520		$	47,368
Allowance for loan commitments		301			62			130			5			85			19			—			602
Total beginning allowance for credit losses		6,357			18,219			10,055			5,678			2,102			5,039			520			47,970
Provision for credit losses:
Provision for loan losses		(1,051	)		(509	)		2,128			869			153			305			361			2,256
Provision for loan commitments		(8	)		(53	)		3			—			1			—			—			(57	)
Total provision for credit losses		(1,059	)		(562	)		2,131			869			154			305			361			2,199
Charge-offs		—			(493	)		(2,276	)		(879	)		(155	)		(752	)		(180	)		(4,735	)
Recoveries		—			120			65			109			11			227			62			594
Net charge-offs		—			(373	)		(2,211	)		(770	)		(144	)		(525	)		(118	)		(4,141	)
Balance at March 31, 2014:
Allowance for loan losses		5,005			17,275			9,842			5,772			2,026			4,800			763			45,483
Allowance for loan commitments		293			9			133			5			86			19			—			545
Total ending allowance for credit losses	$	5,298		$	17,284		$	9,975		$	5,777		$	2,112		$	4,819		$	763		$	46,028

Allowance for Credit Losses and Recorded Investments in Loans

The following tables present the allowance for credit losses and recorded investments in loans by category:

	Allowance for Credit Losses and Recorded Investment in Loans
(unaudited, in thousands)	Commercial Real Estate- Land and Construction		Commercial Real Estate- Improved Property		Commercial and Industrial		Residential Real Estate		Home Equity		Consumer		Over-draft		Total
March 31, 2015
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	2,828	$	873	$	—	$	—	$	—	$	—	$	3,701
Allowance for loans collectively evaluated for impairment		5,331		15,207		8,138		5,034		2,497		3,723		542		40,472
Allowance for loan commitments		178		18		120		13		107		42		—		478
Total allowance for credit losses	$	5,509	$	18,053	$	9,131	$	5,047	$	2,604	$	3,765	$	542	$	44,651
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	9,822	$	2,722	$	—	$	—	$	—	$	—	$	12,544
Collectively evaluated for impairment		288,075		1,899,047		706,899		1,239,163		362,163		365,830		—		4,861,177
Total portfolio loans	$	288,075	$	1,908,869	$	709,621	$	1,239,163	$	362,163	$	365,830	$	—	$	4,873,721
December 31, 2014
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	2,765	$	1,033	$	—	$	—	$	—	$	—	$	3,798
Allowance for loans collectively evaluated for impairment		5,654		14,808		8,030		5,382		2,329		4,078		575		40,856
Allowance for loan commitments		194		10		112		9		90		40		—		455
Total allowance for credit losses	$	5,848	$	17,583	$	9,175	$	5,391	$	2,419	$	4,118	$	575	$	45,109
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	11,469	$	2,844	$	—	$	—	$	—	$	—	$	14,313
Collectively evaluated for impairment		262,643		1,671,348		635,566		928,770		330,031		244,095		—		4,072,453
Total portfolio loans	$	262,643	$	1,682,817	$	638,410	$	928,770	$	330,031	$	244,095	$	—	$	4,086,766

⁽¹⁾  Commercial loans greater than $1 million that are reported as non-accrual or as a troubled debt restructuring (“TDR”) are individually evaluated for impairment.

Summary of Commercial Loans by Risk Grade

The following tables summarize commercial loans by their assigned risk grade:

	Commerical Loans by Internally Assigned Risk Grade
(unaudited, in thousands)	Commercial Real Estate- Land and Construction		Commercial Real Estate- Improved Property		Commercial & Industrial		Total Commercial Loans
As of March 31, 2015
Pass	$	281,730	$	1,848,655	$	683,226	$	2,813,611
Criticized - compromised		3,653		18,049		18,957		40,659
Classified - substandard		2,692		42,165		7,438		52,295
Classified - doubtful		—		—		—		—
Total	$	288,075	$	1,908,869	$	709,621	$	2,906,565
As of December 31, 2014
Pass	$	257,218	$	1,627,771	$	617,742	$	2,502,731
Criticized - compromised		3,645		17,873		12,770		34,288
Classified - substandard		1,780		37,173		7,898		46,851
Classified - doubtful		—		—		—		—
Total	$	262,643	$	1,682,817	$	638,410	$	2,583,870

Summary of Age Analysis of Loan Categories

The following tables summarize the age analysis of all categories of loans:

	Age Analysis of Loans
(unaudited, in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Total Loans		90 Days or More Past Due and Accruing (1)
As of March 31, 2015
Commercial real estate:
Land and construction	$	286,883	$	—	$	—	$	1,192	$	1,192	$	288,075	$	—
Improved property		1,889,451		1,093		1,435		16,890		19,418		1,908,869		—
Total commercial real estate		2,176,334		1,093		1,435		18,082		20,610		2,196,944		—
Commercial and industrial		705,380		916		1,518		1,807		4,241		709,621		3
Residential real estate		1,226,131		4,981		1,673		6,378		13,032		1,239,163		74
Home equity		357,545		1,982		508		2,128		4,618		362,163		684
Consumer		362,338		2,117		868		507		3,492		365,830		270
Total portfolio loans		4,827,728		11,089		6,002		28,902		45,993		4,873,721		1,031
Loans held for sale		6,064		—		—		—		—		6,064		—
Total loans	$	4,833,792	$	11,089	$	6,002	$	28,902	$	45,993	$	4,879,785	$	1,031
Impaired loans included above are as follows:
Non-accrual loans	$	9,209	$	2,008	$	2,319	$	27,838	$	32,165	$	41,374
TDRs accruing interest (1)		16,536		582		179		33		794		17,330
Total impaired	$	25,745	$	2,590	$	2,498	$	27,871	$	32,959	$	58,704
As of December 31, 2014
Commercial real estate:
Land and construction	$	261,356	$	20	$	—	$	1,267	$	1,287	$	262,643	$	71
Improved property		1,665,363		961		4,772		11,721		17,454		1,682,817		—
Total commercial real estate		1,926,719		981		4,772		12,988		18,741		1,945,460		71
Commercial and industrial		634,482		1,834		240		1,854		3,928		638,410		22
Residential real estate		915,968		1,237		3,384		8,181		12,802		928,770		1,306
Home equity		325,291		1,877		895		1,968		4,740		330,031		570
Consumer		240,365		2,571		685		474		3,730		244,095		319
Total portfolio loans		4,042,825		8,500		9,976		25,465		43,941		4,086,766		2,288
Loans held for sale		5,865		—		—		—		—		5,865		—
Total loans	$	4,048,690	$	8,500	$	9,976	$	25,465	$	43,941	$	4,092,631	$	2,288
Impaired loans included above are as follows:
Non-accrual loans	$	7,562	$	2,884	$	5,552	$	22,820	$	31,256	$	38,818
TDRs accruing interest (1)		11,016		151		542		357		1,050		12,066
Total impaired	$	18,578	$	3,035	$	6,094	$	23,177	$	32,306	$	50,884

⁽¹⁾ Loans 90 days or more past due and accruing interest exclude TDRs 90 days or more past due and accruing interest.

Summary of Impaired Loans

The following tables summarize impaired loans:

	Impaired Loans
	March 31, 2015						December 31, 2014
(unaudited, in thousands)	Unpaid Principal Balance (1)		Recorded Investment		Related Allowance		Unpaid Principal Balance (1)		Recorded Investment		Related Allowance
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	3,101	$	2,476	$	—	$	1,588	$	1,488	$	—
Improved property		30,138		22,481		—		16,480		14,684		—
Commercial and industrial		3,094		2,432		—		3,152		2,597		—
Residential real estate		20,943		19,132		—		20,077		18,544		—
Home equity		2,824		2,617		—		2,890		2,663		—
Consumer		1,659		1,332		—		1,287		1,086		—
Total impaired loans without a specific allowance		61,759		50,470		—		45,474		41,062		—
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—
Improved property		6,466		6,466		2,828		7,980		7,980		2,765
Commercial and industrial		1,768		1,768		873		1,842		1,842		1,033
Total impaired loans with a specific allowance		8,234		8,234		3,701		9,822		9,822		3,798
Total impaired loans	$	69,993	$	58,704	$	3,701	$	55,296	$	50,884	$	3,798

⁽¹⁾ The difference between the unpaid principal balance and the recorded investment generally reflects amounts that have been previously charged-off and fair market value adjustments on acquired impaired loans.

	Impaired Loans
	For the Three Months Ended March 31, 2015				For the Three Months Ended March 31, 2014
(unaudited, in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	2,128	$	16	$	2,450	$	2
Improved property		18,932		223		19,158		20
Commercial and industrial		2,513		13		3,532		32
Residential real estate		18,715		230		19,463		182
Home equity		2,641		20		2,367		19
Consumer		1,194		20		1,174		28
Total impaired loans without a specific allowance		46,123		522		48,144		283
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—
Improved property		7,223		—		729		1
Commercial and industrial		1,805		19		2,329		12
Total impaired loans with a specific allowance		9,028		19		3,058		13
Total impaired loans	$	55,151	$	541	$	51,202	$	296

Recorded Investment in Non-Accrual Loans and TDRs

The following tables present the recorded investment in non-accrual loans and TDRs:

	Non-accrual Loans (1)
(unaudited, in thousands)	March 31, 2015		December 31, 2014
Commercial real estate:
Land and construction	$	1,463	$	1,488
Improved property		22,143		20,227
Total commercial real estate		23,606		21,715
Commercial and industrial		3,849		4,110
Residential real estate		11,249		10,329
Home equity		1,899		1,923
Consumer		771		741
Total	$	41,374	$	38,818

⁽¹⁾  Total non-accrual loans include loans that are also restructured. Such loans are also set forth in the following table as non-accrual TDRs.

	TDRs
	March 31, 2015						December 31, 2014
(unaudited, in thousands)	Accruing		Non-Accrual		Total		Accruing		Non-Accrual		Total
Commercial real estate:
Land and construction	$	1,013	$	504	$	1,517	$	—	$	464	$	464
Improved property		6,804		5,399		12,203		2,437		1,850		4,287
Total commercial real estate		7,817		5,903		13,720		2,437		2,314		4,751
Commercial and industrial		351		376		727		329		478		807
Residential real estate		7,883		2,386		10,269		8,215		2,074		10,289
Home equity		718		285		1,003		740		245		985
Consumer		561		274		835		345		309		654
Total	$	17,330	$	9,224	$	26,554	$	12,066	$	5,420	$	17,486

Loans Identified as TDRs

The following table presents details related to loans identified as TDRs during the three months ended March 31, 2015 and 2014, respectively:

	New TDRs (1) For the Three Months Ended
	March 31, 2015						March 31, 2014
(unaudited, dollars in thousands)	Number of Modifications		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment		Number of Modifications		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Land and construction		11	$	1,414	$	1,056		—	$	—	$	—
Improved Property		7		8,568		8,289		1		91		90
Total commercial real estate		18		9,982		9,345		1		91		90
Commercial and industrial		2		42		57		—		—		—
Residential real estate		7		424		421		4		121		118
Home equity		1		7		6		—		—		—
Consumer		21		269		303		2		33		31
Total		49	$	10,724	$	10,132		7	$	245	$	239

⁽¹⁾  Excludes loans that were either paid off or charged-off by period end. The pre-modification balance represents the balance outstanding at the beginning of the period. The post-modification balance represents the outstanding balance at period end.

TDRs Defaulted Later Restructured

The following table summarizes TDRs which defaulted (defined as past due 90 days) during the three months ended March 31, 2015 and 2014, respectively, that were restructured within the last twelve months prior to March 31, 2015 and 2014, respectively:

	Defaulted TDRs (1) For the Three Months Ended				Defaulted TDRs (1) For the Three Months Ended
	March 31, 2015				March 31, 2014
(unaudited, dollars in thousands)	Number of Defaults		Recorded Investment		Number of Defaults		Recorded Investment
Commercial real estate:
Land and construction		—	$	—		—	$	—
Improved property		—		—		—		—
Total commercial real estate		—		—		—		—
Commercial and industrial		—		—		—		—
Residential real estate		—		—		8		481
Home equity		1		42		1		3
Consumer		1		27		—		—
Total		2	$	69		9	$	484

⁽¹⁾  Excludes loans that were either charged-off or cured by period end. The recorded investment is as of March 31, 2014 and 2013, respectively.

Summary of Other Real Estate Owned and Repossessed Assets

The following table summarizes other real estate owned and repossessed assets included in other assets:

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Other real estate owned	$	5,886	$	4,920
Repossessed assets		340		162
Total other real estate owned and repossessed assets	$	6,226	$	5,082

XML

Securities - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015 Holdings	Mar. 31, 2014	Dec. 31, 2014 Holdings	Dec. 31, 2013
Amortized Cost and Fair Value Debt Securities [Abstract]
Maximum percentage of equity of one issuer	10.00%
Number of holdings greater than specified percentage of equity	0		0
Securities with aggregate fair values	$ 1,100,000,000		$ 706,500,000
Proceeds from sale of available-for-sale securities	560,676,000	3,155,000	3,200,000
Net unrealized gains (losses) on available-for-sale securities included in AOCI	7,685,000	(3,002,000)	2,892,000	(6,126,000)
Impaired loss relating to securities	0
Federal home loan bank stock, Total	$ 20,900,000		$ 11,600,000

XML

Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis

The following tables set forth WesBanco’s financial assets and liabilities that were accounted for at fair value on a recurring and nonrecurring basis by level within the fair value hierarchy as of March 31, 2015 and December 31, 2014:

			March 31, 2015
			Fair Value Measurements Using:
(unaudited, in thousands)	March 31, 2015		Quoted Prices in Active Markets for Identical Assets (level  1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Recurring fair value measurements
Securities - available-for-sale
Obligations of government agencies	$	80,768	$	—	$	80,768	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,283,445		—		1,283,445		—
Obligations of state and political subdivisions		95,653		—		95,653		—
Corporate debt securities		183,090		—		183,090		—
Equity securities		11,308		8,538		2,770		—
Total securities - available-for-sale	$	1,654,264	$	8,538	$	1,645,726	$	—
Total recurring fair value measurements	$	1,654,264	$	8,538	$	1,645,726	$	—
Nonrecurring fair value measurements
Impaired loans	$	4,533	$	—	$	—	$	4,533
Other real estate owned and repossessed assets		6,226		—		—		6,226
Loans held for sale		6,064		—		6,064		—
Total nonrecurring fair value measurements	$	16,823	$	—	$	6,064	$	10,759
			December 31, 2014
			Fair Value Measurements Using:
(unaudited, in thousands)	December 31, 2014		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Recurring fair value measurements
Securities - available-for-sale
Obligations of government agencies	$	87,736	$	—	$	87,736	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		701,113		—		701,113		—
Obligations of state and political subdivisions		91,433		—		91,433		—
Corporate debt securities		25,996		—		25,996		—
Equity securities		11,146		8,440		2,706		—
Total securities - available-for-sale	$	917,424	$	8,440	$	908,984	$	—
Total recurring fair value measurements	$	917,424	$	8,440	$	908,984	$	—
Nonrecurring fair value measurements
Impaired loans	$	6,024	$	—	$	—	$	6,024
Other real estate owned and repossessed assets		5,082		—		—		5,082
Loans held for sale		5,865		—		5,865		—
Total nonrecurring fair value measurements	$	16,971	$	—	$	5,865	$	11,106

Schedule of Assets Measured at Fair Value on Nonrecurring Basis

The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which WesBanco has utilized level 3 inputs to determine fair value:

	Quantitative Information about Level 3 Fair Value Measurements
(unaudited, in thousands)	Fair Value Estimate		Valuation Techniques	Unobservable Input	Range (Weighted Average)
March 31, 2015:
Impaired loans	$	4,533	Appraisal of collateral (1)	Appraisal adjustments (2)	0% to (38.5%) / (6.9%)
				Liquidation expenses (2)	(3.1%) to (8.0%) / (7.4%)
Other real estate owned and repossessed assets		6,226	Appraisal of collateral (1), (3)
December 31, 2014:
Impaired loans	$	6,024	Appraisal of collateral (1)	Appraisal adjustments (2)	0% to (39.7%) / (6.7%)
				Liquidation expenses (2)	(1.2%) to (8.0%) / (6.7%)
Other real estate owned and repossessed assets		5,082	Appraisal of collateral (1), (3)

⁽¹⁾ Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.

⁽²⁾  Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of appraisal adjustments and liquidation expenses are presented as a percent of the appraisal.

⁽³⁾  Includes estimated liquidation expenses and numerous dissimilar qualitative adjustments by management which are not identifiable.

Estimates Fair Values of Financial Instruments

The estimated fair values of WesBanco’s financial instruments are summarized below:

					Fair Value Measurements at March 31, 2015
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Financial Assets
Cash and due from banks	$	92,974	$	92,974	$	92,974	$	—	$	—
Securities available-for-sale		1,654,264		1,654,264		8,538		1,645,726		—
Securities held-to-maturity		743,925		772,843		—		772,088		755
Net loans		4,829,548		4,820,779		—		—		4,820,779
Loans held for sale		6,064		6,064		—		6,064		—
Accrued interest receivable		25,232		25,232		25,232		—		—
Bank-owned life insurance		153,991		153,991		153,991		—		—
Financial Liabilities
Deposits		6,416,202		6,423,499		4,532,314		1,891,185		—
Federal Home Loan Bank borrowings		432,456		435,089		—		435,089		—
Other borrowings		76,630		76,621		73,589		3,032		—
Junior subordinated debt		142,269		116,070		—		116,070		—
Accrued interest payable		2,297		2,297		2,297		—		—
					Fair Value Measurements at December 31, 2014
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Financial Assets
Cash and due from banks	$	94,002	$	94,002	$	94,002	$	—	$	—
Securities available-for-sale		917,424		917,424		8,440		908,984		—
Securities held-to-maturity		593,670		619,617		—		618,895		722
Net loans		4,042,112		4,047,648		—		—		4,047,648
Loans held for sale		5,865		5,865		—		5,865		—
Accrued interest receivable		18,481		18,481		18,481		—		—
Bank-owned life insurance		123,298		123,298		123,298		—		—
Financial Liabilities
Deposits		5,048,983		5,056,828		3,743,887		1,312,941		—
Federal Home Loan Bank borrowings		223,126		225,456		—		225,456		—
Other borrowings		80,690		80,696		77,534		3,162		—
Junior subordinated debt		106,176		79,212		—		79,212		—
Accrued interest payable		1,620		1,620		1,620		—		—

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Cash Flows [Abstract]
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 36,064	$ 23,985
INVESTING ACTIVITIES
Net (increase) decrease in loans	(94,812)	3,446
Securities available-for-sale:
Proceeds from sales	560,676	3,155
Proceeds from maturities, prepayments and calls	52,783	53,631
Purchases of securities	(405,998)	(77,725)
Securities held-to-maturity:
Proceeds from maturities, prepayments and calls	9,430	12,325
Purchases of securities	(51,246)	(12,240)
Proceeds from bank-owned life insurance	1,185
Cash paid to acquire a business, net of cash acquired	(28,551)
Purchases of premises and equipment - net	(2,033)	(1,485)
Net cash provided by (used in) investing activities	41,434	(18,893)
FINANCING ACTIVITIES
Increase in deposits	120,954	153,387
Proceeds from Federal Home Loan Bank borrowings	325,000
Repayment of Federal Home Loan Bank borrowings	(507,982)	(16,181)
Decrease in other short-term borrowings	(9,060)	(37,682)
Decrease in federal funds purchased		(20,000)
Dividends paid to common shareholders	(6,446)	(5,833)
Treasury shares (purchased) sold - net	(992)	862
Net cash (used in) provided by financing activities	(78,526)	74,553
Net (decrease) increase in cash and cash equivalents	(1,028)	79,645
Cash and cash equivalents at beginning of the period	94,002	95,551
Cash and cash equivalents at end of the period	92,974	175,196
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	5,522	6,589
Income taxes paid	100
Transfers of loans to other real estate owned	344	1,287
Non-cash transactions related to ESB acquisition	$ 301,933

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Interest bearing deposits, banks	$ 17,871	$ 8,405
Held-to-maturity securities, fair values	$ 772,843	$ 619,617
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 2.0833	$ 2.0833
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	38,546,042	29,367,511
Common stock, shares outstanding	38,449,812	29,298,188
Treasury stock, shares	96,230	69,323

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Business Segments

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Business Segments

NOTE 10. BUSINESS SEGMENTS

WesBanco operates two reportable segments: community banking and trust and investment services. WesBanco’s community banking segment offers services traditionally offered by full-service commercial banks, including commercial demand, individual demand and time deposit accounts, as well as commercial, mortgage and individual installment loans, and certain non-traditional offerings, such as insurance and securities brokerage services. The trust and investment services segment offers trust services as well as various alternative investment products including mutual funds. The market value of assets managed or held in custody by the trust and investment services segment was approximately $3.9 billion and $3.8 billion at March 31, 2015 and 2014, respectively. These assets are held by WesBanco in fiduciary or agency capacities for their customers and therefore are not included as assets on WesBanco’s Consolidated Balance Sheets.

Condensed financial information by business segment is presented below:

(unaudited, in thousands)	Community Banking		Trust and Investment Services		Consolidated
For the Three Months ended March 31, 2015:
Interest income	$	60,379	$	—	$	60,379
Interest expense		5,424		—		5,424
Net interest income		54,955		—		54,955
Provision for credit losses		1,289		—		1,289
Net interest income after provision for credit losses		53,666		—		53,666
Non-interest income		12,137		6,053		18,190
Non-interest expense		50,278		3,163		53,441
Income before provision for income taxes		15,525		2,890		18,415
Provision for income taxes		3,372		1,156		4,528
Net income	$	12,153	$	1,734	$	13,887
For the Three Months ended March 31, 2014:
Interest income	$	53,457	$	—	$	53,457
Interest expense		6,132		—		6,132
Net interest income		47,325		—		47,325
Provision for credit losses		2,199		—		2,199
Net interest income after provision for credit losses		45,126		—		45,126
Non-interest income		11,401		5,648		17,049
Non-interest expense		36,827		3,268		40,095
Income before provision for income taxes		19,700		2,380		22,080
Provision for income taxes		4,707		952		5,659
Net income	$	14,993	$	1,428	$	16,421

Total non-fiduciary assets of the trust and investment services segment were $3.7 million and $4.0 million at March 31, 2015 and 2014, respectively. All other assets, including goodwill and other intangible assets, were allocated to the community banking segment.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	WSBC
Entity Registrant Name	WESBANCO INC
Entity Central Index Key	0000203596
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		38,449,812

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Basis of Presentation

Basis of presentation — The accompanying unaudited interim financial statements of WesBanco, Inc. and its consolidated subsidiaries (“WesBanco”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2014.

WesBanco’s interim financial statements have been prepared following the significant accounting policies disclosed in Note 1 of the Notes to the Consolidated Financial Statements of its 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission. In the opinion of management, the accompanying interim financial information reflects all adjustments, including normal recurring adjustments, necessary to present fairly WesBanco’s financial position and results of operations for each of the interim periods presented. Results of operations for interim periods are not necessarily indicative of the results of operations that may be expected for a full year.

Recent Accounting Pronouncements

Recent accounting pronouncements — In April 2015, the Financial Accounting Standards Board (the “FASB”) issued an Accounting Standards Update (“ASU”) (ASU 2015-05) that provides guidance on when to account for a cloud computing arrangement as a software license. The guidance applies only to internal-use software that a customer obtains access to in a hosting arrangement if both of the following criteria are met: (1) The customer has the contractual right to take possession of the software at any time during the hosting period without significant penalty, (2) it is feasible for the customer to either run the software on its own hardware or contract with another party unrelated to the vendor to host the software. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on WesBanco’s Consolidated Financial Statements.

In February 2015, the FASB issued ASU 2015-02 that revised the consolidation model, requiring reporting entities to reevaluate whether they should consolidate certain legal entities under the revised model. The amendments in this Update modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities, and eliminate the presumption that a general partner should consolidate and affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships. The pronouncement also provides for a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on WesBanco’s Consolidated Financial Statements.

In August 2014, the FASB issued ASU 2014-14 related to the classification of certain government-guaranteed mortgage loans upon foreclosure. The amendments in this update require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met: (1) The loan has a government guarantee that is not separable from the loan before foreclosure, (2) at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim, (3) at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based upon the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014 and may be adopted under either a modified retrospective transition method or a prospective transition method. However, the same method of transition as elected under ASU 2014-04 must be applied. Early adoption is permitted. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In June 2014, the FASB issued ASU 2014-11 related to repurchase-to-maturity transactions, repurchase financing and disclosures. The pronouncement changes the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowing accounting, which is consistent with the accounting for other repurchase agreements. The pronouncement also requires two new disclosures. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The second disclosure provides increased transparency about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. Early adoption is not permitted. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

        In May 2014, the FASB issued ASU 2014-09 related to the recognition of revenue from contracts with customers. The new revenue pronouncement creates a single source of revenue guidance for all companies in all industries and is more principles-based than current revenue guidance. The pronouncement provides a five-step model for a company to recognize revenue when it transfers control of goods or services to customers at an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services. The five steps are (1) identify the contract with the customer, (2) identify the separate performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the separate performance obligations and (5) recognize revenue when each performance obligation is satisfied. The pronouncement is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016 using either a full retrospective approach for all periods presented in the period of adoption or a modified retrospective approach. Early adoption is not permitted. In April 2015, the FASB issued an exposure draft of a proposed ASU that would delay by one year the effective date of ASU 2014-11. Under the proposal, the standard would be effective for annual reporting periods beginning after December 15, 2017 and interim periods therein. WesBanco is currently evaluating the impact of the adoption of this pronouncement on its Consolidated Financial Statements.

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
INTEREST AND DIVIDEND INCOME
Loans, including fees	$ 47,713	$ 42,746
Interest and dividends on securities:
Taxable	8,498	7,225
Tax-exempt	3,533	3,385
Total interest and dividends on securities	12,031	10,610
Other interest income	635	101
Total interest and dividend income	60,379	53,457
INTEREST EXPENSE
Interest bearing demand deposits	422	374
Money market deposits	456	440
Savings deposits	148	130
Certificates of deposit	2,872	3,630
Total interest expense on deposits	3,898	4,574
Federal Home Loan Bank borrowings	557	211
Other short-term borrowings	75	557
Junior subordinated debt owed to unconsolidated subsidiary trusts	894	790
Total interest expense	5,424	6,132
NET INTEREST INCOME	54,955	47,325
Provision for credit losses	1,289	2,199
Net interest income after provision for credit losses	53,666	45,126
NON-INTEREST INCOME
Trust fees	6,053	5,648
Service charges on deposits	3,652	3,860
Electronic banking fees	3,325	3,013
Net securities brokerage revenue	2,059	1,829
Bank-owned life insurance	1,251	875
Net gains on sales of mortgage loans	272	154
Net securities gains	22	10
Net gain on other real estate owned and other assets	122	113
Other income	1,434	1,547
Total non-interest income	18,190	17,049
NON-INTEREST EXPENSE
Salaries and wages	18,357	16,467
Employee benefits	7,316	5,708
Net occupancy	3,490	3,491
Equipment	2,973	2,783
Marketing	965	1,003
FDIC insurance	910	877
Amortization of intangible assets	566	495
Restructuring and merger-related expense	9,733
Other operating expenses	9,131	9,271
Total non-interest expense	53,441	40,095
Income before provision for income taxes	18,415	22,080
Provision for income taxes	4,528	5,659
NET INCOME	13,887	16,421
EARNINGS PER COMMON SHARE
Basic	$ 0.40	$ 0.56
Diluted	$ 0.40	$ 0.56
AVERAGE COMMON SHARES OUTSTANDING
Basic	34,393,137	29,182,183
Diluted	34,478,335	29,262,680
DIVIDENDS DECLARED PER COMMON SHARE	$ 0.23	$ 0.22
COMPREHENSIVE INCOME	$ 19,088	$ 19,694

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Loans and the Allowance for Credit Losses

3 Months Ended

Mar. 31, 2015

Receivables [Abstract]

Loans and the Allowance for Credit Losses

NOTE 5. LOANS AND THE ALLOWANCE FOR CREDIT LOSSES

The recorded investment in loans is presented in the Consolidated Balance Sheets net of deferred loan fees and costs of $2.2 million and $2.4 million at March 31, 2015 and December 31, 2014, respectively.

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Commercial real estate:
Land and construction	$	288,075	$	262,643
Improved property		1,908,869		1,682,817
Total commercial real estate		2,196,944		1,945,460
Commercial and industrial		709,621		638,410
Residential real estate		1,239,163		928,770
Home equity		362,163		330,031
Consumer		365,830		244,095
Total portfolio loans		4,873,721		4,086,766
Loans held for sale		6,064		5,865
Total loans	$	4,879,785	$	4,092,631

The following tables summarize changes in the allowance for credit losses applicable to each category of the loan portfolio:

	Allowance for Credit Losses By Category For the Three Months Ended March 31, 2015 and 2014
(unaudited, in thousands)	Commercial Real Estate- Land and Construction			Commercial Real Estate- Improved Property			Commercial & Industrial			Residential Real Estate			Home Equity			Consumer			Deposit Overdraft			Total
Balance at December 31, 2014:
Allowance for loan losses	$	5,654		$	17,573		$	9,063		$	5,382		$	2,329		$	4,078		$	575		$	44,654
Allowance for loan commitments		194			10			112			9			90			40			—			455
Total beginning allowance for credit losses		5,848			17,583			9,175			5,391			2,419			4,118			575			45,109
Provision for credit losses:
Provision for loan losses		(323	)		903			(44	)		(208	)		747			133			58			1,266
Provision for loan commitments		(16	)		8			8			4			17			2			—			23
Total provision for credit losses		(339	)		911			(36	)		(204	)		764			135			58			1,289
Charge-offs		—			(577	)		(122	)		(358	)		(589	)		(717	)		(154	)		(2,517	)
Recoveries		—			136			114			218			10			229			63			770
Net charge-offs		—			(441	)		(8	)		(140	)		(579	)		(488	)		(91	)		(1,747	)
Balance at March 31, 2015:
Allowance for loan losses		5,331			18,035			9,011			5,034			2,497			3,723			542			44,173
Allowance for loan commitments		178			18			120			13			107			42			—			478
Total ending allowance for credit losses	$	5,509		$	18,053		$	9,131		$	5,047		$	2,604		$	3,765		$	542		$	44,651
Balance at December 31, 2013:
Allowance for loan losses	$	6,056		$	18,157		$	9,925		$	5,673		$	2,017		$	5,020		$	520		$	47,368
Allowance for loan commitments		301			62			130			5			85			19			—			602
Total beginning allowance for credit losses		6,357			18,219			10,055			5,678			2,102			5,039			520			47,970
Provision for credit losses:
Provision for loan losses		(1,051	)		(509	)		2,128			869			153			305			361			2,256
Provision for loan commitments		(8	)		(53	)		3			—			1			—			—			(57	)
Total provision for credit losses		(1,059	)		(562	)		2,131			869			154			305			361			2,199
Charge-offs		—			(493	)		(2,276	)		(879	)		(155	)		(752	)		(180	)		(4,735	)
Recoveries		—			120			65			109			11			227			62			594
Net charge-offs		—			(373	)		(2,211	)		(770	)		(144	)		(525	)		(118	)		(4,141	)
Balance at March 31, 2014:
Allowance for loan losses		5,005			17,275			9,842			5,772			2,026			4,800			763			45,483
Allowance for loan commitments		293			9			133			5			86			19			—			545
Total ending allowance for credit losses	$	5,298		$	17,284		$	9,975		$	5,777		$	2,112		$	4,819		$	763		$	46,028

The following tables present the allowance for credit losses and recorded investments in loans by category:

	Allowance for Credit Losses and Recorded Investment in Loans
(unaudited, in thousands)	Commercial Real Estate- Land and Construction		Commercial Real Estate- Improved Property		Commercial and Industrial		Residential Real Estate		Home Equity		Consumer		Over-draft		Total
March 31, 2015
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	2,828	$	873	$	—	$	—	$	—	$	—	$	3,701
Allowance for loans collectively evaluated for impairment		5,331		15,207		8,138		5,034		2,497		3,723		542		40,472
Allowance for loan commitments		178		18		120		13		107		42		—		478
Total allowance for credit losses	$	5,509	$	18,053	$	9,131	$	5,047	$	2,604	$	3,765	$	542	$	44,651
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	9,822	$	2,722	$	—	$	—	$	—	$	—	$	12,544
Collectively evaluated for impairment		288,075		1,899,047		706,899		1,239,163		362,163		365,830		—		4,861,177
Total portfolio loans	$	288,075	$	1,908,869	$	709,621	$	1,239,163	$	362,163	$	365,830	$	—	$	4,873,721
December 31, 2014
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	2,765	$	1,033	$	—	$	—	$	—	$	—	$	3,798
Allowance for loans collectively evaluated for impairment		5,654		14,808		8,030		5,382		2,329		4,078		575		40,856
Allowance for loan commitments		194		10		112		9		90		40		—		455
Total allowance for credit losses	$	5,848	$	17,583	$	9,175	$	5,391	$	2,419	$	4,118	$	575	$	45,109
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	11,469	$	2,844	$	—	$	—	$	—	$	—	$	14,313
Collectively evaluated for impairment		262,643		1,671,348		635,566		928,770		330,031		244,095		—		4,072,453
Total portfolio loans	$	262,643	$	1,682,817	$	638,410	$	928,770	$	330,031	$	244,095	$	—	$	4,086,766

⁽¹⁾  Commercial loans greater than $1 million that are reported as non-accrual or as a troubled debt restructuring (“TDR”) are individually evaluated for impairment.

        WesBanco maintains an internal loan grading system to reflect the credit quality of commercial loans. Commercial loan risk grades are determined based on an evaluation of the relevant characteristics of each loan, assigned at the inception of each loan and adjusted thereafter at any time to reflect changes in the risk profile throughout the life of each loan. The primary factors used to determine the risk grade are the reliability and sustainability of the primary source of repayment and overall financial strength of the borrower. This includes an analysis of cash flow available to repay debt, profitability, liquidity, leverage, and overall financial trends. Other factors include management, industry or property type risks, an assessment of secondary sources of repayment such as collateral or guarantees, other terms and conditions of the loan that may increase or reduce its risk, and economic conditions and other external factors that may influence repayment capacity and financial condition.

Commercial real estate — land and construction consists of loans to finance investments in vacant land, land development, construction of residential housing, and construction of commercial buildings. Commercial real estate – improved property consists of loans for the purchase or refinance of all types of improved owner-occupied and investment properties. Factors that are considered in assigning the risk grade vary depending on the type of property financed. The risk grade assigned to construction and development loans is based on the overall viability of the project, the experience and financial capacity of the developer or builder to successfully complete the project, project specific and market absorption rates and comparable property values, and the amount of pre-sales for residential housing construction or pre-leases for commercial investment property. The risk grade assigned to commercial investment property loans is based primarily on the adequacy of net rental income generated by the property to service the debt, the type, quality, industry and mix of tenants, and the terms of leases, but also considers the overall financial capacity of the investors and their experience in owning and managing investment property. The risk grade assigned to owner-occupied commercial real estate and commercial and industrial loans is based primarily on historical and projected earnings, the adequacy of operating cash flow to service all of the business’ debt, and the capital resources, liquidity and leverage of the business, but also considers the industry in which the business operates, the business’ specific competitive advantages or disadvantages, the quality and experience of management, and external influences on the business such as economic conditions. Other factors that are considered for commercial and industrial loans include the type, quality and marketability of non-real estate collateral and whether the structure of the loan increases or reduces its risk. The type, age, condition, location and any environmental risks associated with a property are also considered for all types of commercial real estate. The overall financial condition and repayment capacity of any guarantors is also evaluated to determine the extent to which they mitigate other risks of the loan. The following descriptions of risk grades apply to commercial real estate and commercial and industrial loans:

Pass loans are those that exhibit a history of positive financial results that are at least comparable to the average for their industry or type of real estate. The primary source of repayment is acceptable and these loans are expected to perform satisfactorily during most economic cycles. Pass loans typically have no significant external factors that are expected to adversely affect these borrowers more than others in the same industry or property type. Any minor unfavorable characteristics of these loans are outweighed or mitigated by other positive factors including but not limited to adequate secondary or tertiary sources of repayment.

Criticized or compromised loans are currently protected but have weaknesses, which, if not corrected, may inadequately protect the Bank at some future date. These loans represent an unwarranted credit risk and would generally not be extended in the normal course of lending. Specific issues which may warrant this grade include declining financial results, increased reliance on secondary sources of repayment or guarantor support and adverse external influences that may negatively impact the business or property.

Substandard and doubtful loans are equivalent to the classifications used by banking regulators. Substandard loans are inadequately protected by the current repayment capacity and equity of the borrower or collateral pledged, if any. Substandard loans have one or more well-defined weaknesses that jeopardize their repayment or collection in full. These loans may or may not be reported as non-accrual. Doubtful loans have all the weaknesses inherent to a substandard loan with the added characteristic that full repayment is highly questionable or improbable on the basis of currently existing facts, conditions and collateral values. However, recognition of loss may be deferred if there are reasonably specific pending factors that will reduce the risk if they occur.

The following tables summarize commercial loans by their assigned risk grade:

	Commerical Loans by Internally Assigned Risk Grade
(unaudited, in thousands)	Commercial Real Estate- Land and Construction		Commercial Real Estate- Improved Property		Commercial & Industrial		Total Commercial Loans
As of March 31, 2015
Pass	$	281,730	$	1,848,655	$	683,226	$	2,813,611
Criticized - compromised		3,653		18,049		18,957		40,659
Classified - substandard		2,692		42,165		7,438		52,295
Classified - doubtful		—		—		—		—
Total	$	288,075	$	1,908,869	$	709,621	$	2,906,565
As of December 31, 2014
Pass	$	257,218	$	1,627,771	$	617,742	$	2,502,731
Criticized - compromised		3,645		17,873		12,770		34,288
Classified - substandard		1,780		37,173		7,898		46,851
Classified - doubtful		—		—		—		—
Total	$	262,643	$	1,682,817	$	638,410	$	2,583,870

Residential real estate, home equity and consumer loans are not assigned internal risk grades other than as required by regulatory guidelines that are based primarily on the age of past due loans. WesBanco primarily evaluates the credit quality of residential real estate, home equity and consumer loans based on repayment performance and historical loss rates. The aggregate amount of residential real estate, home equity and consumer loans classified as substandard in accordance with regulatory guidelines were $15.5 million at March 31, 2015 and $15.2 million at December 31, 2014, of which $1.5 and $2.2 million were accruing, for each period, respectively. The aggregate amount of residential real estate, home equity and consumer loans classified as substandard are not included in the tables above.

Acquired Loans — Loans acquired in connection with acquisitions are recorded at their acquisition-date fair value in accordance with ASC 805, Business Combinations, with no carryover of related allowance for credit losses. Determining the fair value of the acquired loans involves estimating the principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. Management considers a number of factors in evaluating the acquisition-date fair value including the remaining life of the acquired loans, delinquency status, estimated prepayments, payment options and other loan features, internal risk grade, estimated value of the underlying collateral and interest rate environment.

Loans acquired with deteriorated credit quality are accounted for in accordance with ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality (ASC 310-30), and therefore impaired if, at acquisition, the loans have evidence of credit quality deterioration since origination and it is probable that all contractually required payments will not be collected. At acquisition, WesBanco considers several factors as indicators that an acquired loan has evidence of deterioration in credit quality. These factors include loans 90 days or more past due, loans with an internal risk grade of substandard or below, loans classified as non-accrual by the acquired institution, and loans that have been previously modified as a TDR.

Acquired loans that were not individually determined to be impaired are considered performing and are accounted for in accordance with ASC 310-20, Nonrefundable Fees and Other Costs (ASC 310-20), whereby the premium or discount derived from the fair market value adjustment, on a loan-by-loan or pooled basis, is recognized into interest income on a level yield over the remaining expected life of the loan or pool.

Under the ASC 310-30 model, the excess of cash flows expected to be collected at acquisition over recorded fair value is referred to as the accretable yield and is the interest component of expected cash flow. The accretable yield is recognized into income over the remaining life of the loan if the timing and/or amount of cash flows expected to be collected can be reasonably estimated. If the timing or amount of cash flows expected to be collected cannot be reasonably estimated, the cost recovery method of income recognition is used. The difference between the loan’s total scheduled principal and interest payments over all cash flows expected to be collected at acquisition, considering the impact of prepayments, is referred to as the non-accretable difference. The non-accretable difference represents contractually required principal and interest payments which WesBanco does not expect to collect.

Over the life of the loan, management continues to estimate cash flows expected to be collected. Decreases in expected cash flows are recognized as impairments through a charge to the provision for loan losses resulting in an increase in the allowance for loan losses. Subsequent improvements in cash flows result in first, reversal of existing valuation allowances recognized subsequent to acquisition, if any, and next, an increase in the amount of accretable yield to be subsequently recognized in interest income on a prospective basis over the loan’s remaining life.

In conjunction with the ESB acquisition, WesBanco acquired loans with a book value of $716.1 million. These loans were recorded at their fair value of $700.8 million, with $691.1 million categorized as performing. The fair market value adjustment on performing loans of $9.0 million at acquisition date is expected to be recognized into interest income on a level yield over the remaining expected life of the performing loans. Loans acquired with deteriorated credit quality with a book value of $16.0 million were recorded at their estimated fair value of $9.7 million. The accretable yield on the acquired impaired loans is estimated at $2.4 million, while the non-accretable difference is estimated at $3.9 million. The balance of these loans acquired with deteriorated credit quality at March 31, 2015, was $9.3 million, of which $3.6 million were categorized as non-accrual and $5.7 million were categorized as accruing TDRs.

The following tables summarize the age analysis of all categories of loans:

	Age Analysis of Loans
(unaudited, in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Total Loans		90 Days or More Past Due and Accruing (1)
As of March 31, 2015
Commercial real estate:
Land and construction	$	286,883	$	—	$	—	$	1,192	$	1,192	$	288,075	$	—
Improved property		1,889,451		1,093		1,435		16,890		19,418		1,908,869		—
Total commercial real estate		2,176,334		1,093		1,435		18,082		20,610		2,196,944		—
Commercial and industrial		705,380		916		1,518		1,807		4,241		709,621		3
Residential real estate		1,226,131		4,981		1,673		6,378		13,032		1,239,163		74
Home equity		357,545		1,982		508		2,128		4,618		362,163		684
Consumer		362,338		2,117		868		507		3,492		365,830		270
Total portfolio loans		4,827,728		11,089		6,002		28,902		45,993		4,873,721		1,031
Loans held for sale		6,064		—		—		—		—		6,064		—
Total loans	$	4,833,792	$	11,089	$	6,002	$	28,902	$	45,993	$	4,879,785	$	1,031
Impaired loans included above are as follows:
Non-accrual loans	$	9,209	$	2,008	$	2,319	$	27,838	$	32,165	$	41,374
TDRs accruing interest (1)		16,536		582		179		33		794		17,330
Total impaired	$	25,745	$	2,590	$	2,498	$	27,871	$	32,959	$	58,704
As of December 31, 2014
Commercial real estate:
Land and construction	$	261,356	$	20	$	—	$	1,267	$	1,287	$	262,643	$	71
Improved property		1,665,363		961		4,772		11,721		17,454		1,682,817		—
Total commercial real estate		1,926,719		981		4,772		12,988		18,741		1,945,460		71
Commercial and industrial		634,482		1,834		240		1,854		3,928		638,410		22
Residential real estate		915,968		1,237		3,384		8,181		12,802		928,770		1,306
Home equity		325,291		1,877		895		1,968		4,740		330,031		570
Consumer		240,365		2,571		685		474		3,730		244,095		319
Total portfolio loans		4,042,825		8,500		9,976		25,465		43,941		4,086,766		2,288
Loans held for sale		5,865		—		—		—		—		5,865		—
Total loans	$	4,048,690	$	8,500	$	9,976	$	25,465	$	43,941	$	4,092,631	$	2,288
Impaired loans included above are as follows:
Non-accrual loans	$	7,562	$	2,884	$	5,552	$	22,820	$	31,256	$	38,818
TDRs accruing interest (1)		11,016		151		542		357		1,050		12,066
Total impaired	$	18,578	$	3,035	$	6,094	$	23,177	$	32,306	$	50,884

⁽¹⁾ Loans 90 days or more past due and accruing interest exclude TDRs 90 days or more past due and accruing interest.

Impaired Loans — A loan is considered impaired, based on current information and events, if it is probable that WesBanco will be unable to collect the payments of principal and interest when due according to the contractual terms of the loan agreement. Impaired loans generally included all non-accrual loans and TDRs.

Loans are generally placed on non-accrual when they are 90 days past due unless the loan is well-secured and in the process of collection. Loans may also be placed on non-accrual when full collection of principal is in doubt even if payments on such loans remain current, or may remain on non-accrual if they were past due but subsequently brought current.

Loans are categorized as TDRs when the Bank, for economic or legal reasons related to a borrower’s financial difficulties, grants a concession to the borrower that it would not otherwise consider.

Acquired loans that have experienced a deterioration of credit quality from origination to acquisition for which it is probable that WesBanco will be unable to collect all contractually required payments receivable, including both principal and interest, are considered impaired.

The following tables summarize impaired loans:

	Impaired Loans
	March 31, 2015						December 31, 2014
(unaudited, in thousands)	Unpaid Principal Balance (1)		Recorded Investment		Related Allowance		Unpaid Principal Balance (1)		Recorded Investment		Related Allowance
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	3,101	$	2,476	$	—	$	1,588	$	1,488	$	—
Improved property		30,138		22,481		—		16,480		14,684		—
Commercial and industrial		3,094		2,432		—		3,152		2,597		—
Residential real estate		20,943		19,132		—		20,077		18,544		—
Home equity		2,824		2,617		—		2,890		2,663		—
Consumer		1,659		1,332		—		1,287		1,086		—
Total impaired loans without a specific allowance		61,759		50,470		—		45,474		41,062		—
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—
Improved property		6,466		6,466		2,828		7,980		7,980		2,765
Commercial and industrial		1,768		1,768		873		1,842		1,842		1,033
Total impaired loans with a specific allowance		8,234		8,234		3,701		9,822		9,822		3,798
Total impaired loans	$	69,993	$	58,704	$	3,701	$	55,296	$	50,884	$	3,798

⁽¹⁾ The difference between the unpaid principal balance and the recorded investment generally reflects amounts that have been previously charged-off and fair market value adjustments on acquired impaired loans.

	Impaired Loans
	For the Three Months Ended March 31, 2015				For the Three Months Ended March 31, 2014
(unaudited, in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	2,128	$	16	$	2,450	$	2
Improved property		18,932		223		19,158		20
Commercial and industrial		2,513		13		3,532		32
Residential real estate		18,715		230		19,463		182
Home equity		2,641		20		2,367		19
Consumer		1,194		20		1,174		28
Total impaired loans without a specific allowance		46,123		522		48,144		283
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—
Improved property		7,223		—		729		1
Commercial and industrial		1,805		19		2,329		12
Total impaired loans with a specific allowance		9,028		19		3,058		13
Total impaired loans	$	55,151	$	541	$	51,202	$	296

The following tables present the recorded investment in non-accrual loans and TDRs:

	Non-accrual Loans (1)
(unaudited, in thousands)	March 31, 2015		December 31, 2014
Commercial real estate:
Land and construction	$	1,463	$	1,488
Improved property		22,143		20,227
Total commercial real estate		23,606		21,715
Commercial and industrial		3,849		4,110
Residential real estate		11,249		10,329
Home equity		1,899		1,923
Consumer		771		741
Total	$	41,374	$	38,818

⁽¹⁾  Total non-accrual loans include loans that are also restructured. Such loans are also set forth in the following table as non-accrual TDRs.

	TDRs
	March 31, 2015						December 31, 2014
(unaudited, in thousands)	Accruing		Non-Accrual		Total		Accruing		Non-Accrual		Total
Commercial real estate:
Land and construction	$	1,013	$	504	$	1,517	$	—	$	464	$	464
Improved property		6,804		5,399		12,203		2,437		1,850		4,287
Total commercial real estate		7,817		5,903		13,720		2,437		2,314		4,751
Commercial and industrial		351		376		727		329		478		807
Residential real estate		7,883		2,386		10,269		8,215		2,074		10,289
Home equity		718		285		1,003		740		245		985
Consumer		561		274		835		345		309		654
Total	$	17,330	$	9,224	$	26,554	$	12,066	$	5,420	$	17,486

As of March 31, 2015, there were three TDRs greater than $1.0 million. The concessions granted in the majority of loans reported as accruing and non-accrual TDRs are extensions of the maturity date or the amortization period, reductions in the interest rate below the prevailing market rate for loans with comparable characteristics, and/or permitting interest-only payments for longer than three months.

The following table presents details related to loans identified as TDRs during the three months ended March 31, 2015 and 2014, respectively:

	New TDRs (1) For the Three Months Ended
	March 31, 2015						March 31, 2014
(unaudited, dollars in thousands)	Number of Modifications		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment		Number of Modifications		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Land and construction		11	$	1,414	$	1,056		—	$	—	$	—
Improved Property		7		8,568		8,289		1		91		90
Total commercial real estate		18		9,982		9,345		1		91		90
Commercial and industrial		2		42		57		—		—		—
Residential real estate		7		424		421		4		121		118
Home equity		1		7		6		—		—		—
Consumer		21		269		303		2		33		31
Total		49	$	10,724	$	10,132		7	$	245	$	239

⁽¹⁾  Excludes loans that were either paid off or charged-off by period end. The pre-modification balance represents the balance outstanding at the beginning of the period. The post-modification balance represents the outstanding balance at period end.

The following table summarizes TDRs which defaulted (defined as past due 90 days) during the three months ended March 31, 2015 and 2014, respectively, that were restructured within the last twelve months prior to March 31, 2015 and 2014, respectively:

	Defaulted TDRs (1) For the Three Months Ended				Defaulted TDRs (1) For the Three Months Ended
	March 31, 2015				March 31, 2014
(unaudited, dollars in thousands)	Number of Defaults		Recorded Investment		Number of Defaults		Recorded Investment
Commercial real estate:
Land and construction		—	$	—		—	$	—
Improved property		—		—		—		—
Total commercial real estate		—		—		—		—
Commercial and industrial		—		—		—		—
Residential real estate		—		—		8		481
Home equity		1		42		1		3
Consumer		1		27		—		—
Total		2	$	69		9	$	484

⁽¹⁾  Excludes loans that were either charged-off or cured by period end. The recorded investment is as of March 31, 2014 and 2013, respectively.

TDRs that defaulted during the three month period that were restructured within the last twelve months represented 0.3% of the total TDR balance at March 31, 2015. These loans are placed on non-accrual status unless they are both well-secured and in the process of collection. At March 31, 2015, none of the loans in the table above were accruing interest.

The following table summarizes other real estate owned and repossessed assets included in other assets:

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Other real estate owned	$	5,886	$	4,920
Repossessed assets		340		162
Total other real estate owned and repossessed assets	$	6,226	$	5,082

Residential real estate included in other real estate owned at March 31, 2015 and December 31, 2014 was $0.8 million and $0.6 million, respectively. At March 31, 2015, formal foreclosure proceedings were in process on residential real estate loans totaling $4.3 million.

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Securities

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Securities

NOTE 4. SECURITIES

The following table presents the fair value and amortized cost of available-for-sale and held-to-maturity securities:

	March 31, 2015									December 31, 2014
(unaudited, in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale
Obligations of government agencies	$	79,315	$	1,486	$	(33	)	$	80,768	$	86,964	$	1,087	$	(315	)	$	87,736
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,279,350		8,091		(3,996	)		1,283,445		703,535		4,336		(6,758	)		701,113
Obligations of states and political subdivisions		89,977		5,693		(17	)		95,653		86,073		5,365		(5	)		91,433
Corporate debt securities		182,781		430		(121	)		183,090		25,974		141		(119	)		25,996
Total debt securities	$	1,631,423	$	15,700	$	(4,167	)	$	1,642,956	$	902,546	$	10,929	$	(7,197	)	$	906,278
Equity securities		10,702		606		—			11,308		10,304		842		—			11,146
Total available-for-sale securities	$	1,642,125	$	16,306	$	(4,167	)	$	1,654,264	$	912,850	$	11,771	$	(7,197	)	$	917,424
Held-to-maturity
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies	$	126,935	$	3,244	$	(208	)	$	129,971	$	79,004	$	3,262	$	(246	)	$	82,020
Obligations of states and political subdivisions		610,249		26,560		(878	)		635,931		507,927		23,917		(1,043	)		530,801
Corporate debt securities		6,741		200		—			6,941		6,739		106		(49	)		6,796
Total held-to-maturity securities	$	743,925	$	30,004	$	(1,086	)	$	772,843	$	593,670	$	27,285	$	(1,338	)	$	619,617
Total securities	$	2,386,050	$	46,310	$	(5,253	)	$	2,427,107	$	1,506,520	$	39,056	$	(8,535	)	$	1,537,041

At March 31, 2015, and December 31, 2014, there were no holdings of any one issuer, other than the U.S. government and its agencies, in an amount greater than 10% of WesBanco’s shareholders’ equity.

The following table presents the fair value of available-for-sale and held-to-maturity securities by contractual maturity at March 31, 2015. In some instances, the issuers may have the right to call or prepay obligations without penalty prior to the contractual maturity date.

	March 31, 2015
(unaudited, in thousands)	One Year or less		One to Five Years		Five to Ten Years		After Ten Years		Mortgage-backed and Equity		Total
Available-for-sale
Obligations of government agencies	$	—	$	23,276	$	40,297	$	17,195	$	—	$	80,768
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies (1)		—		—		—		—		1,283,445		1,283,445
Obligations of states and political subdivisions		5,254		33,049		21,417		35,933		—		95,653
Corporate debt securities		82,193		62,312		33,658		4,927		—		183,090
Equity securities (2)		—		—		—		—		11,308		11,308
Total available-for-sale securities	$	87,447	$	118,637	$	95,372	$	58,055	$	1,294,753	$	1,654,264
Held-to-maturity (3)
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies (1)	$	—	$	—	$	—	$	—	$	129,971	$	129,971
Obligations of states and political subdivisions		2,852		17,024		259,231		356,824		—		635,931
Corporate debt securities		—		—		6,941		—		—		6,941
Total held-to-maturity securities	$	2,852	$	17,024	$	266,172	$	356,824	$	129,971	$	772,843
Total securities	$	90,299	$	135,661	$	361,544	$	414,879	$	1,424,724	$	2,427,107

⁽¹⁾ Mortgage-backed and collateralized mortgage securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.

⁽²⁾ Equity securities, which have no stated maturity, are not assigned a maturity category.

⁽³⁾  The held-to-maturity portfolio is carried at an amortized cost of $743.9 million.

Securities with aggregate fair values of $1.1 billion and $706.5 million at March 31, 2015 and December 31, 2014, respectively, were pledged as security for public and trust funds, and securities sold under agreements to repurchase. Proceeds from the sale of available-for-sale securities were $560.7 million, entirely due to the ESB portfolio restructuring, and $3.2 million for the three months ended March 31, 2015 and 2014, respectively. Net unrealized gains on available-for-sale securities included in accumulated other comprehensive income net of tax, as of March 31, 2015 and December 31, 2014 were $7.7 million and $2.9 million, respectively.

The following table presents the gross realized gains and losses on sales and calls of securities for the three months ended March 31, 2015 and 2014, respectively.

	For the Three Months Ended March 31,
(unaudited, in thousands)	2015			2014
Gross realized gains	$	24		$	195
Gross realized losses		(2	)		(185	)
Net realized gains (losses)	$	22		$	10

The following tables provide information on unrealized losses on investment securities that have been in an unrealized loss position for less than twelve months and twelve months or more as of March 31, 2015 and December 31, 2014:

	March 31, 2015
	Less than 12 months							12 months or more							Total
(unaudited, dollars in thousands)	Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities
Obligations of government agencies		17,953		(33	)		3		—		—			0		17,953		(33	)		3
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		260,103		(681	)		55		168,693		(3,523	)		32		428,796		(4,204	)		87
Obligations of states and political subdivisions		68,439		(450	)		79		20,777		(445	)		31		89,216		(895	)		110
Corporate debt securities		53,122		(113	)		16		1,978		(8	)		1		55,100		(121	)		17
Total temporarily impaired securities		399,617		(1,277	)		153		191,448		(3,976	)		64		591,065		(5,253	)		217
	December 31, 2014
	Less than 12 months							12 months or more							Total
(unaudited, dollars in thousands)	Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities
Obligations of government agencies	$	19,362	$	(77	)		5	$	19,757	$	(238	)		4	$	39,119	$	(315	)		9
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		78,786		(386	)		19		240,055		(6,618	)		43		318,841		(7,004	)		62
Obligations of states and political subdivisions		12,615		(96	)		15		61,548		(952	)		93		74,163		(1,048	)		108
Corporate debt securities		2,969		(31	)		1		4,573		(137	)		2		7,542		(168	)		3
Total temporarily impaired securities	$	113,732	$	(590	)		40	$	325,933	$	(7,945	)		142	$	439,665	$	(8,535	)		182

Unrealized losses on debt securities in the tables represent temporary fluctuations resulting from changes in market rates in relation to fixed yields. Unrealized losses in the available-for-sale portfolio are accounted for as an adjustment, net of taxes, to other comprehensive income in shareholders’ equity.

WesBanco does not believe the securities presented above are impaired due to reasons of credit quality, as there are no debt securities rated below investment grade and all are paying principal and interest according to their contractual terms. WesBanco does not intend to sell, nor is it more likely than not that it will be required to sell, loss position securities prior to recovery of their cost, and therefore, management believes the unrealized losses detailed above are temporary and no impairment loss relating to these securities has been recognized.

Securities that do not have readily determinable fair values and for which WesBanco does not exercise significant influence are carried at cost. Cost method investments consist primarily of FHLB of Pittsburgh and FHLB of Cincinnati stock totaling $20.9 million and $11.6 million at March 31, 2015 and December 31, 2014, respectively, and are included in other assets in the Consolidated Balance Sheets. Cost method investments are evaluated for impairment whenever events or circumstances suggest that their carrying value may not be recoverable.

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Pension Plan (Tables)

3 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Pension Cost

The following table presents the net periodic pension cost for WesBanco’s Defined Benefit Pension Plan (the “Plan”) and the related components:

	For the Three Months Ended March 31,
(unaudited, in thousands)	2015			2014
Service cost - benefits earned during year	$	827		$	717
Interest cost on projected benefit obligation		1,201			1,170
Expected return on plan assets		(1,907	)		(1,783	)
Amortization of prior service cost		6			11
Amortization of net loss		784			363
Net periodic pension cost	$	911		$	478

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Mergers and Acquisitions (Tables)

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Calculation of Purchase Price and Resulting Goodwill Relating to ESB Acquisition

The purchase price of the ESB acquisition and resulting goodwill is summarized as follows:

(unaudited, in thousands)	February 10, 2015
Purchase Price:
Fair value of WesBanco shares issued, (net of equity issuance costs of $0.1 million)	$	293,933
Cash consideration for outstanding ESB shares, options and restricted stock		37,036
Settlement of pre-existing loan to ESB		8,000
Total purchase price	$	338,969
Fair value of:
Tangible assets acquired	$	1,859,865
Core deposit and other intangible assets acquired		5,346
Liabilities assumed		(1,703,616	)
Net cash received in the acquisition		8,485
Fair value of net assets acquired		170,080
Goodwill recognized	$	168,889

Summary of Fair Value of Net Assets that Wesbanco Acquired from ESB

The following table presents the preliminary allocation of the purchase price of the assets acquired and the liabilities assumed at the date of acquisition, as WesBanco intends to finalize its accounting for the acquisition of ESB during 2015:

(unaudited, in thousands)	February 10, 2015
Assets
Cash and due from banks	$	8,485
Securities		486,891
Loans		700,849
Goodwill and other intangible assets		174,235
Accrued income and other assets (1)		672,125
Total Assets	$	2,042,585
Liabilities
Deposits	$	1,246,992
Borrowings		433,454
Accrued expenses and other liabilities		23,170
Total liabilities		1,703,616
Purchase price	$	338,969

⁽¹⁾  Includes receivables of $560.7 million from the sale of available-for-sale securities prior to the acquisition date.

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Comprehensive Income

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Comprehensive Income

NOTE 8. COMPREHENSIVE INCOME

The activity in accumulated other comprehensive income for the three months ended March 31, 2015 and 2014 is as follows:

	Accumulated Other Comprehensive Income(1)
(unaudited, in thousands)	Defined Benefit Pension Plan			Unrealized Gains (Losses) on Securities Available-for-Sale			Unrealized Gains on Securities Transferred from Available-for- Sale to Held-to-Maturity			Total
Balance at December 31, 2014	$	(22,776	)	$	2,892		$	1,059		$	(18,825	)
Other comprehensive income before reclassifications		—			4,804			—			4,804
Amounts reclassified from accumulated other comprehensive income		475			(11	)		(67	)		397
Period change		475			4,793			(67	)		5,201
Balance at March 31, 2015	$	(22,301	)	$	7,685		$	992		$	(13,624	)
Balance at December 31, 2013	$	(7,966	)	$	(6,126	)	$	1,358		$	(12,734	)
Other comprehensive income before reclassifications		—			3,075			—			3,075
Amounts reclassified from accumulated other comprehensive income		236			49			(87	)		198
Period change		236			3,124			(87	)		3,273
Balance at March 31, 2014	$	(7,730	)	$	(3,002	)	$	1,271		$	(9,461	)

⁽¹⁾  All amounts are net of tax. Related income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 37%.

The following table provides details about amounts reclassified from accumulated other comprehensive income for the three months ended March 31, 2015 and 2014:

Details about Accumulated Other Comprehensive Income/(Loss) Components	Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) For the Three Months Ended March 31,						Affected Line Item in the Statement of Net Income
(unaudited, in thousands)	2015			2014
Securities available-for-sale (1):
Net securities (gains) losses reclassified into earnings		(18	)	$	78		Net securities gains (Non-interest income)
Related income tax expense (benefit)		7			(29	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(11	)		49
Securities held-to-maturity (1):
Amortization of unrealized gain transferred from available-for-sale		(107	)		(138	)	Interest and dividends on securities (Interest and dividend income)
Related income tax expense		40			51		Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(67	)		(87	)
Defined benefit pension plan (2):
Amortization of net loss and prior service costs		790			374		Employee benefits (Non-interest expense)
Related income tax benefit		(315	)		(138	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		475			236
Total reclassifications for the period		397		$	198

⁽¹⁾ For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income see Note 4, “Securities.”

⁽²⁾ Included in the computation of net periodic pension cost. See Note 6, “Pension Plan” for additional detail.

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Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Beginning Balance, Defined Benefit Pension Plan	$ (22,776)	$ (7,966)
Defined Benefit Pension Plan, Other comprehensive income before reclassifications	0	0
Defined Benefit Pension Plan, Amounts reclassified from accumulated other comprehensive income	475	236
Defined Benefit Pension Plan, Period change	475	236
Ending Balance, Defined Benefit Pension Plan	(22,301)	(7,730)
Beginning Balance, Unrealized Gains (Losses) on Securities Available-for-Sale	2,892	(6,126)
Unrealized Gains (Losses) on Securities Available-for-Sale, Other comprehensive income before reclassifications	4,804	3,075
Unrealized Gains (Losses) on Securities Available-for-Sale, Amounts reclassified from accumulated other comprehensive income	(11)	49
Net effect on accumulated other comprehensive income for the period	4,793	3,124
Ending Balance, Unrealized Gains (Losses) on Securities Available-for-Sale	7,685	(3,002)
Beginning Balance, Unrealized Gains on Securities Transferred from Available-for-Sale to Held-to-Maturity	1,059	1,358
Unrealized Gains on Securities Transferred from Available-for-Sale to Held-to-Maturity, Other comprehensive income before reclassifications	0	0
Unrealized Gains on Securities Transferred from Available-for-Sale to Held-to-Maturity, Amounts reclassified from accumulated other comprehensive income	(67)	(87)
Unrealized Gains on Securities Transferred from Available-for-Sale to Held-to-Maturity, Period change	(67)	(87)
Ending Balance, Unrealized Gains on Securities Transferred from Available-for-Sale to Held-to-Maturity	992	1,271
Beginning Balance, Accumulated Other Comprehensive Income	(18,825)	(12,734)
Other comprehensive income before reclassifications	4,804	3,075
Amounts reclassified from accumulated other comprehensive income	397	198
Total other comprehensive income	5,201	3,273
Ending Balance, Accumulated Other Comprehensive Income	$ (13,624)	$ (9,461)

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Pension Plan

3 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Pension Plan

NOTE 6. PENSION PLAN

The following table presents the net periodic pension cost for WesBanco’s Defined Benefit Pension Plan (the “Plan”) and the related components:

	For the Three Months Ended March 31,
(unaudited, in thousands)	2015			2014
Service cost - benefits earned during year	$	827		$	717
Interest cost on projected benefit obligation		1,201			1,170
Expected return on plan assets		(1,907	)		(1,783	)
Amortization of prior service cost		6			11
Amortization of net loss		784			363
Net periodic pension cost	$	911		$	478

The Plan covers all employees of WesBanco and its subsidiaries who were hired on or before August 1, 2007 who satisfy minimum age and length of service requirements, and is not available to employees hired after such date.

A minimum required contribution of $3.1 million is due for 2015 which could be all or partially offset by the Plan’s $34.9 million available credit balance. WesBanco expects to make a voluntary contribution of $7.5 million to the Plan in 2015.

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Fair Value Measurement

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurement

NOTE 7. FAIR VALUE MEASUREMENT

Fair value estimates are based on quoted market prices, if available, quoted market prices of similar assets or liabilities, or the present value of expected future cash flows and other valuation techniques. These valuations are significantly affected by discount rates, cash flow assumptions, and risk assumptions used. Therefore, fair value estimates may not be substantiated by comparison to independent markets and are not intended to reflect the proceeds that may be realizable in an immediate settlement of the instruments.

Fair value is determined at one point in time and is not representative of future value. These amounts do not reflect the total value of a going concern organization. Management does not have the intention to dispose of a significant portion of its assets and liabilities and therefore, the unrealized gains or losses should not be interpreted as a forecast of future earnings and cash flows.

The following is a discussion of assets and liabilities measured at fair value on a recurring basis and valuation techniques applied:

Securities available-for-sale: The fair value of securities available-for-sale which are measured on a recurring basis are determined primarily by obtaining quoted prices on nationally recognized securities exchanges or matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other similar securities. These securities are classified within level 1 or 2 in the fair value hierarchy. Certain equity securities that are lightly traded in over-the-counter markets are classified as level 2 in the fair value hierarchy, as quoted market prices may not be available on the fair value measurement date. Positions that are not traded in active markets for which valuations are generated using assumptions not observable in the market or management’s best estimate are classified within level 3 of the fair value hierarchy. This includes certain specific municipal debt issues for which the credit quality and discount rate must be estimated.

We may be required from time to time to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower of cost or market accounting or write-downs of individual assets.

Impaired loans: Impaired loans are carried at the lower of cost or the fair value of the collateral for collateral-dependent loans. Collateral may be in the form of real estate or business assets including equipment, inventory and accounts receivable. The use of independent appraisals, discounted cash flow models and management’s best judgment are significant inputs in arriving at the fair value measure of the underlying collateral and impaired loans are therefore classified within level 3 of the fair value hierarchy.

Other real estate owned and repossessed assets: Other real estate owned and repossessed assets are carried at the lower of the investment in the assets or the fair value of the assets less estimated selling costs. The use of independent appraisals and management’s best judgment are significant inputs in arriving at the fair value measure of the underlying collateral, and therefore other real estate owned and repossessed assets are classified within level 3 of the fair value hierarchy.

Loans held for sale: Loans held for sale are carried, in aggregate, at the lower of cost or fair value. The use of a valuation model using quoted prices of similar instruments are significant inputs in arriving at the fair value and therefore loans held for sale are classified within level 2 of the fair value hierarchy.

The following tables set forth WesBanco’s financial assets and liabilities that were accounted for at fair value on a recurring and nonrecurring basis by level within the fair value hierarchy as of March 31, 2015 and December 31, 2014:

			March 31, 2015
			Fair Value Measurements Using:
(unaudited, in thousands)	March 31, 2015		Quoted Prices in Active Markets for Identical Assets (level  1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Recurring fair value measurements
Securities - available-for-sale
Obligations of government agencies	$	80,768	$	—	$	80,768	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,283,445		—		1,283,445		—
Obligations of state and political subdivisions		95,653		—		95,653		—
Corporate debt securities		183,090		—		183,090		—
Equity securities		11,308		8,538		2,770		—
Total securities - available-for-sale	$	1,654,264	$	8,538	$	1,645,726	$	—
Total recurring fair value measurements	$	1,654,264	$	8,538	$	1,645,726	$	—
Nonrecurring fair value measurements
Impaired loans	$	4,533	$	—	$	—	$	4,533
Other real estate owned and repossessed assets		6,226		—		—		6,226
Loans held for sale		6,064		—		6,064		—
Total nonrecurring fair value measurements	$	16,823	$	—	$	6,064	$	10,759
			December 31, 2014
			Fair Value Measurements Using:
(unaudited, in thousands)	December 31, 2014		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Recurring fair value measurements
Securities - available-for-sale
Obligations of government agencies	$	87,736	$	—	$	87,736	$	—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		701,113		—		701,113		—
Obligations of state and political subdivisions		91,433		—		91,433		—
Corporate debt securities		25,996		—		25,996		—
Equity securities		11,146		8,440		2,706		—
Total securities - available-for-sale	$	917,424	$	8,440	$	908,984	$	—
Total recurring fair value measurements	$	917,424	$	8,440	$	908,984	$	—
Nonrecurring fair value measurements
Impaired loans	$	6,024	$	—	$	—	$	6,024
Other real estate owned and repossessed assets		5,082		—		—		5,082
Loans held for sale		5,865		—		5,865		—
Total nonrecurring fair value measurements	$	16,971	$	—	$	5,865	$	11,106

WesBanco’s policy is to recognize transfers between levels as of the actual date of the event or change in circumstances that caused the transfer. There were no transfers between level 1, 2 or 3 for the three months ended March 31, 2015 or 2014.

The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which WesBanco has utilized level 3 inputs to determine fair value:

	Quantitative Information about Level 3 Fair Value Measurements
(unaudited, in thousands)	Fair Value Estimate		Valuation Techniques	Unobservable Input	Range (Weighted Average)
March 31, 2015:
Impaired loans	$	4,533	Appraisal of collateral (1)	Appraisal adjustments (2)	0% to (38.5%) / (6.9%)
				Liquidation expenses (2)	(3.1%) to (8.0%) / (7.4%)
Other real estate owned and repossessed assets		6,226	Appraisal of collateral (1), (3)
December 31, 2014:
Impaired loans	$	6,024	Appraisal of collateral (1)	Appraisal adjustments (2)	0% to (39.7%) / (6.7%)
				Liquidation expenses (2)	(1.2%) to (8.0%) / (6.7%)
Other real estate owned and repossessed assets		5,082	Appraisal of collateral (1), (3)

⁽¹⁾ Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.

⁽²⁾  Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of appraisal adjustments and liquidation expenses are presented as a percent of the appraisal.

⁽³⁾  Includes estimated liquidation expenses and numerous dissimilar qualitative adjustments by management which are not identifiable.

The estimated fair values of WesBanco’s financial instruments are summarized below:

					Fair Value Measurements at March 31, 2015
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Financial Assets
Cash and due from banks	$	92,974	$	92,974	$	92,974	$	—	$	—
Securities available-for-sale		1,654,264		1,654,264		8,538		1,645,726		—
Securities held-to-maturity		743,925		772,843		—		772,088		755
Net loans		4,829,548		4,820,779		—		—		4,820,779
Loans held for sale		6,064		6,064		—		6,064		—
Accrued interest receivable		25,232		25,232		25,232		—		—
Bank-owned life insurance		153,991		153,991		153,991		—		—
Financial Liabilities
Deposits		6,416,202		6,423,499		4,532,314		1,891,185		—
Federal Home Loan Bank borrowings		432,456		435,089		—		435,089		—
Other borrowings		76,630		76,621		73,589		3,032		—
Junior subordinated debt		142,269		116,070		—		116,070		—
Accrued interest payable		2,297		2,297		2,297		—		—
					Fair Value Measurements at December 31, 2014
(unaudited, in thousands)	Carrying Amount		Fair Value Estimate		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)
Financial Assets
Cash and due from banks	$	94,002	$	94,002	$	94,002	$	—	$	—
Securities available-for-sale		917,424		917,424		8,440		908,984		—
Securities held-to-maturity		593,670		619,617		—		618,895		722
Net loans		4,042,112		4,047,648		—		—		4,047,648
Loans held for sale		5,865		5,865		—		5,865		—
Accrued interest receivable		18,481		18,481		18,481		—		—
Bank-owned life insurance		123,298		123,298		123,298		—		—
Financial Liabilities
Deposits		5,048,983		5,056,828		3,743,887		1,312,941		—
Federal Home Loan Bank borrowings		223,126		225,456		—		225,456		—
Other borrowings		80,690		80,696		77,534		3,162		—
Junior subordinated debt		106,176		79,212		—		79,212		—
Accrued interest payable		1,620		1,620		1,620		—		—

The following methods and assumptions were used to measure the fair value of financial instruments recorded at cost on WesBanco’s consolidated balance sheets:

Cash and due from banks: The carrying amount for cash and due from banks is a reasonable estimate of fair value.

Securities held-to-maturity: Fair values for securities held-to-maturity are determined in the same manner as securities available-for-sale which is described above.

Net loans: Fair values for loans are estimated using a discounted cash flow methodology. The discount rates take into account interest rates currently being offered to customers for loans with similar terms, the credit risk associated with the loan and other market factors, including liquidity. The valuation of the loan portfolio reflects discounts that WesBanco believes are consistent with transactions occurring in the marketplace for both performing and distressed loan types. The carrying value that fair value is compared to is net of the allowance for loan losses and other associated premiums and discounts. Due to the significant judgment involved in evaluating credit quality, loans are classified within level 3 of the fair value hierarchy.

Accrued interest receivable: The carrying amount of accrued interest receivable approximates its fair value.

Bank-owned life insurance: The carrying value of bank-owned life insurance represents the net cash surrender value of the underlying insurance policies, should these policies be terminated. Management believes that the carrying value approximates its fair value.

Deposits: The carrying amount is considered a reasonable estimate of fair value for demand, savings and other variable rate deposit accounts. The fair value of fixed maturity certificates of deposit is estimated by a discounted cash flow method using rates currently offered for deposits of similar remaining maturities.

Federal Home Loan Bank borrowings: The fair value of FHLB borrowings is based on rates currently available to WesBanco for borrowings with similar terms and remaining maturities.

Other borrowings: The carrying amount of federal funds purchased and overnight sweep accounts generally approximate fair value. Other repurchase agreements are based on quoted market prices if available. If market prices are not available, for certain fixed and adjustable rate repurchase agreements, then quoted market prices of similar instruments are used.

Junior subordinated debt owed to unconsolidated subsidiary trusts: Due to the pooled nature of these instruments, which are not actively traded, estimated fair value is based on recent similar transactions of single-issuer trust preferred securities.

Accrued interest payable: The carrying amount of accrued interest payable approximates its fair value.

Off-balance sheet financial instruments: Off-balance sheet financial instruments consist of commitments to extend credit, including letters of credit. Fair values for commitments to extend credit are estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present credit standing of the counterparties. The estimated fair value of the commitments to extend credit and letters of credit are insignificant and therefore are not presented in the above tables.

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Commitments and Contingent Liabilities

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingent Liabilities

NOTE 9. COMMITMENTS AND CONTINGENT LIABILITIES

Commitments — In the normal course of business, WesBanco offers off-balance sheet credit arrangements to enable its customers to meet their financing objectives. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements. WesBanco’s exposure to credit losses in the event of non-performance by the other parties to the financial instruments for commitments to extend credit and standby letters of credit is limited to the contractual amount of those instruments. WesBanco uses the same credit policies in making commitments and conditional obligations as for all other lending. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The allowance for credit losses associated with commitments was $0.5 million as of March 31, 2015 and December 31, 2014, respectively, and is included in other liabilities on the Consolidated Balance Sheets.

Letters of credit are conditional commitments issued by banks to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements, including normal business activities, bond financing and similar transactions. Letters of credit are considered guarantees. The liability associated with letters of credit was $0.2 million as of March 31, 2015 and December 31, 2014, respectively.

Contingent obligations to purchase loans funded by other entities include affordable housing plan guarantees and credit card guarantees. Affordable housing plan guarantees are performance guarantees for various building project loans. The guarantee amortizes as the loan balances decrease. Credit card guarantees are credit card balances not owned by WesBanco, whereby the Bank guarantees the performance of the cardholder.

The following table presents total commitments to extend credit, guarantees and various letters of credit outstanding:

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Lines of credit	$	1,032,235	$	984,352
Loans approved but not closed		295,702		116,757
Overdraft limits		110,389		95,965
Letters of credit		26,910		23,362
Contingent obligations to purchase loans funded by other entities		8,457		8,312

Contingent Liabilities — WesBanco is a party to various legal and administrative proceedings and claims. While any litigation contains an element of uncertainty, management does not believe that a material loss related to such proceedings or claims pending or known to be threatened is reasonably possible.

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Commitments and Contingent Liabilities - Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Lines of credit	$ 1,032,235	$ 984,352
Loans approved but not closed	295,702	116,757
Overdraft limits	110,389	95,965
Letters of credit	26,910	23,362
Contingent obligations to purchase loans funded by other entities	$ 8,457	$ 8,312

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Business Segments - Financial Information by Business Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Interest income	$ 60,379	$ 53,457	$ 53,457
Interest expense	5,424	6,132	6,132
Net interest income	54,955	47,325	47,325
Provision for credit losses	1,289	2,199	2,199
Net interest income after provision for credit losses	53,666	45,126	45,126
Non-interest income	18,190	17,049	17,049
Non-interest expense	53,441	40,095	40,095
Income before provision for income taxes	18,415	22,080	22,080
Provision for income taxes	4,528	5,659	5,659
Net income	13,887	16,421	16,421
Community Banking [Member]
Segment Reporting Information [Line Items]
Interest income	60,379		53,457
Interest expense	5,424		6,132
Net interest income	54,955		47,325
Provision for credit losses	1,289		2,199
Net interest income after provision for credit losses	53,666		45,126
Non-interest income	12,137		11,401
Non-interest expense	50,278		36,827
Income before provision for income taxes	15,525		19,700
Provision for income taxes	3,372		4,707
Net income	12,153		14,993
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Non-interest income	6,053		5,648
Non-interest expense	3,163		3,268
Income before provision for income taxes	2,890		2,380
Provision for income taxes	1,156		952
Net income	$ 1,734		$ 1,428

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Commitments and Contingent Liabilities - Additional Information (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Allowance for credit losses associated with loan commitments	$ 478,000	$ 455,000	$ 545,000	$ 602,000
Liability associated with letters of credit	$ 200,000	$ 200,000

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Earnings Per Common Share - Additional Information (Detail)	3 Months Ended	0 Months Ended
	Mar. 31, 2014	Feb. 10, 2015
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options excluded from computation of diluted earnings per share	33,000
ESB Financial Corporation [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares issued		9,178,531

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Loans and the Allowance for Credit Losses - Loans Identified as TDRs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Contract	Mar. 31, 2014 Contract
Financing Receivable, Modifications [Line Items]
Number of Modifications	49	7
Pre-Modification Outstanding Recorded Investment	$ 10,724	$ 245
Post-Modification Outstanding Recorded Investment	10,132	239
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	11
Pre-Modification Outstanding Recorded Investment	1,414
Post-Modification Outstanding Recorded Investment	1,056
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	7	1
Pre-Modification Outstanding Recorded Investment	8,568	91
Post-Modification Outstanding Recorded Investment	8,289	90
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	18	1
Pre-Modification Outstanding Recorded Investment	9,982	91
Post-Modification Outstanding Recorded Investment	9,345	90
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	2
Pre-Modification Outstanding Recorded Investment	42
Post-Modification Outstanding Recorded Investment	57
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	7	4
Pre-Modification Outstanding Recorded Investment	424	121
Post-Modification Outstanding Recorded Investment	421	118
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	1
Pre-Modification Outstanding Recorded Investment	7
Post-Modification Outstanding Recorded Investment	6
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	21	2
Pre-Modification Outstanding Recorded Investment	269	33
Post-Modification Outstanding Recorded Investment	$ 303	$ 31

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Securities (Tables)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities

The following table presents the fair value and amortized cost of available-for-sale and held-to-maturity securities:

	March 31, 2015									December 31, 2014
(unaudited, in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Available-for-sale
Obligations of government agencies	$	79,315	$	1,486	$	(33	)	$	80,768	$	86,964	$	1,087	$	(315	)	$	87,736
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,279,350		8,091		(3,996	)		1,283,445		703,535		4,336		(6,758	)		701,113
Obligations of states and political subdivisions		89,977		5,693		(17	)		95,653		86,073		5,365		(5	)		91,433
Corporate debt securities		182,781		430		(121	)		183,090		25,974		141		(119	)		25,996
Total debt securities	$	1,631,423	$	15,700	$	(4,167	)	$	1,642,956	$	902,546	$	10,929	$	(7,197	)	$	906,278
Equity securities		10,702		606		—			11,308		10,304		842		—			11,146
Total available-for-sale securities	$	1,642,125	$	16,306	$	(4,167	)	$	1,654,264	$	912,850	$	11,771	$	(7,197	)	$	917,424
Held-to-maturity
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies	$	126,935	$	3,244	$	(208	)	$	129,971	$	79,004	$	3,262	$	(246	)	$	82,020
Obligations of states and political subdivisions		610,249		26,560		(878	)		635,931		507,927		23,917		(1,043	)		530,801
Corporate debt securities		6,741		200		—			6,941		6,739		106		(49	)		6,796
Total held-to-maturity securities	$	743,925	$	30,004	$	(1,086	)	$	772,843	$	593,670	$	27,285	$	(1,338	)	$	619,617
Total securities	$	2,386,050	$	46,310	$	(5,253	)	$	2,427,107	$	1,506,520	$	39,056	$	(8,535	)	$	1,537,041

Schedule of Fair Value of Available-for-sale and Held-to-maturity Securities by Contractual Maturity

The following table presents the fair value of available-for-sale and held-to-maturity securities by contractual maturity at March 31, 2015. In some instances, the issuers may have the right to call or prepay obligations without penalty prior to the contractual maturity date.

	March 31, 2015
(unaudited, in thousands)	One Year or less		One to Five Years		Five to Ten Years		After Ten Years		Mortgage-backed and Equity		Total
Available-for-sale
Obligations of government agencies	$	—	$	23,276	$	40,297	$	17,195	$	—	$	80,768
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies (1)		—		—		—		—		1,283,445		1,283,445
Obligations of states and political subdivisions		5,254		33,049		21,417		35,933		—		95,653
Corporate debt securities		82,193		62,312		33,658		4,927		—		183,090
Equity securities (2)		—		—		—		—		11,308		11,308
Total available-for-sale securities	$	87,447	$	118,637	$	95,372	$	58,055	$	1,294,753	$	1,654,264
Held-to-maturity (3)
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies (1)	$	—	$	—	$	—	$	—	$	129,971	$	129,971
Obligations of states and political subdivisions		2,852		17,024		259,231		356,824		—		635,931
Corporate debt securities		—		—		6,941		—		—		6,941
Total held-to-maturity securities	$	2,852	$	17,024	$	266,172	$	356,824	$	129,971	$	772,843
Total securities	$	90,299	$	135,661	$	361,544	$	414,879	$	1,424,724	$	2,427,107

⁽¹⁾ Mortgage-backed and collateralized mortgage securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.

⁽²⁾ Equity securities, which have no stated maturity, are not assigned a maturity category.

⁽³⁾  The held-to-maturity portfolio is carried at an amortized cost of $743.9 million.

Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities

The following table presents the gross realized gains and losses on sales and calls of securities for the three months ended March 31, 2015 and 2014, respectively.

	For the Three Months Ended March 31,
(unaudited, in thousands)	2015			2014
Gross realized gains	$	24		$	195
Gross realized losses		(2	)		(185	)
Net realized gains (losses)	$	22		$	10

Schedule of Unrealized Losses on Investment Securities

The following tables provide information on unrealized losses on investment securities that have been in an unrealized loss position for less than twelve months and twelve months or more as of March 31, 2015 and December 31, 2014:

	March 31, 2015
	Less than 12 months							12 months or more							Total
(unaudited, dollars in thousands)	Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities
Obligations of government agencies		17,953		(33	)		3		—		—			0		17,953		(33	)		3
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		260,103		(681	)		55		168,693		(3,523	)		32		428,796		(4,204	)		87
Obligations of states and political subdivisions		68,439		(450	)		79		20,777		(445	)		31		89,216		(895	)		110
Corporate debt securities		53,122		(113	)		16		1,978		(8	)		1		55,100		(121	)		17
Total temporarily impaired securities		399,617		(1,277	)		153		191,448		(3,976	)		64		591,065		(5,253	)		217
	December 31, 2014
	Less than 12 months							12 months or more							Total
(unaudited, dollars in thousands)	Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities		Fair Value		Unrealized Losses			# of Securities
Obligations of government agencies	$	19,362	$	(77	)		5	$	19,757	$	(238	)		4	$	39,119	$	(315	)		9
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		78,786		(386	)		19		240,055		(6,618	)		43		318,841		(7,004	)		62
Obligations of states and political subdivisions		12,615		(96	)		15		61,548		(952	)		93		74,163		(1,048	)		108
Corporate debt securities		2,969		(31	)		1		4,573		(137	)		2		7,542		(168	)		3
Total temporarily impaired securities	$	113,732	$	(590	)		40	$	325,933	$	(7,945	)		142	$	439,665	$	(8,535	)		182

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Commitments and Contingent Liabilities (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding

The following table presents total commitments to extend credit, guarantees and various letters of credit outstanding:

(unaudited, in thousands)	March 31, 2015		December 31, 2014
Lines of credit	$	1,032,235	$	984,352
Loans approved but not closed		295,702		116,757
Overdraft limits		110,389		95,965
Letters of credit		26,910		23,362
Contingent obligations to purchase loans funded by other entities		8,457		8,312

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Loans and the Allowance for Credit Losses - Summary of Impaired Loans (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	$ 61,759	$ 45,474
Total impaired loans, Unpaid principal balance	69,993	55,296
Recorded Investment, With no specific allowance recorded	50,470	41,062
Total impaired loans, Recorded investment	58,704	50,884
Unpaid Principal Balance, With a specific allowance recorded	8,234	9,822
Recorded Investment, With a specific allowance recorded	8,234	9,822
Related Allowance, With a specific allowance recorded	3,701	3,798
Average recorded investment, with no related specific allowance	46,123	48,144
Interest income recognized, With no related specific allowance	522	283
Average recorded investment, With a specific allowance recorded	9,028	3,058
Interest income recognized, With a specific allowance recorded	19	13
Total impaired loans, Average recorded investment	55,151	51,202
Total impaired loans, Interest income recognized	541	296
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	3,101	1,588
Recorded Investment, With no specific allowance recorded	2,476	1,488
Average recorded investment, with no related specific allowance	2,128	2,450
Interest income recognized, With no related specific allowance	16	2
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	30,138	16,480
Recorded Investment, With no specific allowance recorded	22,481	14,684
Unpaid Principal Balance, With a specific allowance recorded	6,466	7,980
Recorded Investment, With a specific allowance recorded	6,466	7,980
Related Allowance, With a specific allowance recorded	2,828	2,765
Average recorded investment, with no related specific allowance	18,932	19,158
Interest income recognized, With no related specific allowance	223	20
Average recorded investment, With a specific allowance recorded	7,223	729
Interest income recognized, With a specific allowance recorded		1
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	3,094	3,152
Recorded Investment, With no specific allowance recorded	2,432	2,597
Unpaid Principal Balance, With a specific allowance recorded	1,768	1,842
Recorded Investment, With a specific allowance recorded	1,768	1,842
Related Allowance, With a specific allowance recorded	873	1,033
Average recorded investment, with no related specific allowance	2,513	3,532
Interest income recognized, With no related specific allowance	13	32
Average recorded investment, With a specific allowance recorded	1,805	2,329
Interest income recognized, With a specific allowance recorded	19	12
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	20,943	20,077
Recorded Investment, With no specific allowance recorded	19,132	18,544
Average recorded investment, with no related specific allowance	18,715	19,463
Interest income recognized, With no related specific allowance	230	182
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	2,824	2,890
Recorded Investment, With no specific allowance recorded	2,617	2,663
Average recorded investment, with no related specific allowance	2,641	2,367
Interest income recognized, With no related specific allowance	20	19
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	1,659	1,287
Recorded Investment, With no specific allowance recorded	1,332	1,086
Average recorded investment, with no related specific allowance	1,194	1,174
Interest income recognized, With no related specific allowance	$ 20	$ 28

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Loans and the Allowance for Credit Losses - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015 Contract	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Deferred loan fees and costs	$ 2,200,000	$ 2,400,000
Aggregate amount of residential real estate, home equity and consumer loans classified as substandard	15,500,000	15,200,000
Internally assigned loan grades to residential real estate, home equity and consumer loans	1,500,000	2,200,000
Book value of acquired loans	716,100,000
Fair value of acquired loans	700,800,000
Loans acquired accretable	2,400,000
Book value, acquired loans with deteriorated credit quality	16,000,000
Fair value of acquired loans with deteriorated credit quality	9,700,000
Deteriorated credit quality loans acquired non-accretable difference	3,900,000
Balance loans acquired with deteriorated credit quality	9,300,000
Certain loans acquired in transfer not accounted for as debt securities acquired during period at acquisition non accrual	3,600,000
Certain loans acquired in transfer not accounted for as debt securities acquired during period at acquisition accrual amount	5,700,000
Non-accrual status period	90 days
Number of restructured contracts greater than $1 million	3
Accruing and non accrual TDR permitted interest-only payment period	3 months
Percentage of TDRs defaulted during the period that were restructured within the last twelve months	0.30%
Other real estate owned	5,886,000	4,920,000
Performing Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Fair value of acquired loans	691,100,000
Loans acquired accretable	9,000,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Other real estate owned	800,000	600,000
Foreclosure proceedings in process on residential real estate loans	$ 4,300,000

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Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Deferred Benefits for Directors [Member]
Beginning Balance at Dec. 31, 2013	$ 746,595	$ 61,182	$ 244,974	$ 460,351	$ (5,969)	$ (12,734)	$ (1,209)
Beginning Balance, shares at Dec. 31, 2013		29,175,236
Net income	16,421			16,421
Other comprehensive income	3,273					3,273
Comprehensive income	19,694
Common dividends declared ($0.22 per share in Mar 31, 2015 and 2014 respectively	(6,420)			(6,420)
Treasury shares acquired	(19)		49		(68)
Treasury shares acquired, shares		(2,258)
Stock options exercised	976		(176)		1,152
Stock options exercised, shares		37,092
Restricted stock granted			(63)		63
Restricted stock granted, shares		2,040
Stock compensation expense	291		291
Deferred benefits for directors- net			10				(10)
Ending Balance at Mar. 31, 2014	761,117	61,182	245,085	470,352	(4,822)	(9,461)	(1,219)
Ending Balance, shares at Mar. 31, 2014		29,212,110
Beginning Balance at Dec. 31, 2014	788,190	61,182	244,661	504,578	(2,151)	(18,825)	(1,255)
Beginning Balance, shares at Dec. 31, 2014		29,298,188
Net income	13,887			13,887
Other comprehensive income	5,201					5,201
Comprehensive income	19,088
Common dividends declared ($0.22 per share in Mar 31, 2015 and 2014 respectively	(8,843)			(8,843)
Shares issued for acquisition	293,629	19,122	274,507
Shares issued for acquisition, shares		9,178,531
Treasury shares acquired	(1,262)				(1,262)
Treasury shares acquired, shares		(38,237)
Stock options exercised	308		(44)		352
Stock options exercised, shares		11,330
Stock compensation expense	274		274
Deferred benefits for directors- net			1,198				(1,198)
Ending Balance at Mar. 31, 2015	$ 1,091,384	$ 80,304	$ 520,596	$ 509,622	$ (3,061)	$ (13,624)	$ (2,453)
Ending Balance, shares at Mar. 31, 2015		38,449,812

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EARNINGS PER COMMON SHARE

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

EARNINGS PER COMMON SHARE

NOTE 3. EARNINGS PER COMMON SHARE

Earnings per common share are calculated as follows:

	For the Three Months Ended March 31,
(unaudited, in thousands, except shares and per share amounts)	2015		2014
Numerator for both basic and diluted earnings per common share:
Net income	$	13,887	$	16,421
Denominator:
Total average basic common shares outstanding		34,393,137		29,182,183
Effect of dilutive stock options and warrant		85,198		80,497
Total diluted average common shares outstanding		34,478,335		29,262,680
Earnings per common share - basic	$	0.40	$	0.56
Earnings per common share - diluted	$	0.40	$	0.56

All stock options outstanding were included in the computation of diluted earnings per share for the three months ended March 31, 2015 as all were considered dilutive, while 33,000 were not included in March 31, 2014, because to do so would have been anti-dilutive.

On February 10, 2015, WesBanco issued 9,178,531 shares to complete its acquisition of ESB. These shares are included in average shares outstanding beginning on that date. For additional information relating to the ESB acquisition, refer to Note 2, “Mergers and Acquisitions.”

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Fair Value Measurement - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Other real estate owned and repossessed assets	6,226	5,082
Nonrecurring Fair Value Measurements [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	4,533	6,024
Other real estate owned and repossessed assets	6,226	5,082
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	4,533	6,024
Other real estate owned and repossessed assets	6,226	5,082
Minimum [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans, Appraisal adjustments	0.00%	0.00%
Impaired loans, Liquidation expenses	(3.10%)	(1.20%)
Maximum [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans, Appraisal adjustments	(38.50%)	(39.70%)
Impaired loans, Liquidation expenses	(8.00%)	(8.00%)
Weighted Average [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans, Appraisal adjustments	(6.90%)	(6.70%)
Impaired loans, Liquidation expenses	(7.40%)	(6.70%)

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Business Segments (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Financial Information by Business Segment

Condensed financial information by business segment is presented below:

(unaudited, in thousands)	Community Banking		Trust and Investment Services		Consolidated
For the Three Months ended March 31, 2015:
Interest income	$	60,379	$	—	$	60,379
Interest expense		5,424		—		5,424
Net interest income		54,955		—		54,955
Provision for credit losses		1,289		—		1,289
Net interest income after provision for credit losses		53,666		—		53,666
Non-interest income		12,137		6,053		18,190
Non-interest expense		50,278		3,163		53,441
Income before provision for income taxes		15,525		2,890		18,415
Provision for income taxes		3,372		1,156		4,528
Net income	$	12,153	$	1,734	$	13,887
For the Three Months ended March 31, 2014:
Interest income	$	53,457	$	—	$	53,457
Interest expense		6,132		—		6,132
Net interest income		47,325		—		47,325
Provision for credit losses		2,199		—		2,199
Net interest income after provision for credit losses		45,126		—		45,126
Non-interest income		11,401		5,648		17,049
Non-interest expense		36,827		3,268		40,095
Income before provision for income taxes		19,700		2,380		22,080
Provision for income taxes		4,707		952		5,659
Net income	$	14,993	$	1,428	$	16,421

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Securities - Schedule of Fair Value of Available-for-Sale and Held-to-Maturity Securities by Contractual Maturity (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Amortized Cost and Fair Value Debt Securities [Abstract]
Held-to-maturity, Amortized Cost	$ 743,925	$ 593,670

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EARNINGS PER COMMON SHARE (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Summary of Earnings Per Common Share

Earnings per common share are calculated as follows:

	For the Three Months Ended March 31,
(unaudited, in thousands, except shares and per share amounts)	2015		2014
Numerator for both basic and diluted earnings per common share:
Net income	$	13,887	$	16,421
Denominator:
Total average basic common shares outstanding		34,393,137		29,182,183
Effect of dilutive stock options and warrant		85,198		80,497
Total diluted average common shares outstanding		34,478,335		29,262,680
Earnings per common share - basic	$	0.40	$	0.56
Earnings per common share - diluted	$	0.40	$	0.56