10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2018

☐ 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  ☑    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).     Yes  ☑    No  ☐

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

Large accelerated filer	☑	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ☐

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

As of October 22, 2018, there were 54,598,186 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 September 30, 2018 (unaudited) and December 31, 2017		3
	Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2018 and 2017 (unaudited)		4
	Consolidated Statements of Changes in Shareholders’ Equity for the nine months ended September 30, 2018 and 2017 (unaudited)		5
	Consolidated Statements of Cash Flows for the nine months ended September 30, 2018 and 2017 (unaudited)		6
	Notes to Consolidated Financial Statements (unaudited)		7
2	Management’s Discussion and Analysis of Financial Condition and Results of Operations		35
3	Quantitative and Qualitative Disclosures About Market Risk		55
4	Controls and Procedures		58
	PART II – OTHER INFORMATION
1	Legal Proceedings		59
2	Unregistered Sales of Equity Securities and Use of Proceeds		59
6	Exhibits		60
	Signatures		61

2

PART I—FINANCIAL INFORMATION

ITEM  1. FINANCIAL STATEMENTS

WESBANCO, INC. CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except shares)	September 30, 2018			December 31, 2017
ASSETS
Cash and due from banks, including interest bearing amounts of $88,854 and $19,826, respectively	$	273,680		$	117,572
Securities:
Equity securities, at fair value		12,784			13,457
Available-for-sale debt securities, at fair value		2,008,232			1,261,865
Held-to-maturity debt securities (fair values of $1,014,361 and $1,023,784, respectively)		1,025,538			1,009,500
Total securities		3,046,554			2,284,822
Loans held for sale		55,913			20,320
Portfolio loans, net of unearned income		7,726,423			6,341,441
Allowance for loan losses		(48,902	)		(45,284	)
Net portfolio loans		7,677,521			6,296,157
Premises and equipment, net		159,284			130,722
Accrued interest receivable		39,465			29,728
Goodwill and other intangible assets, net		928,083			589,264
Bank-owned life insurance		223,995			192,589
Other assets		194,984			155,004
Total Assets	$	12,599,479		$	9,816,178
LIABILITIES
Deposits:
Non-interest bearing demand	$	2,411,862		$	1,846,748
Interest bearing demand		2,187,662			1,625,015
Money market		1,178,950			1,024,856
Savings deposits		1,649,684			1,269,912
Certificates of deposit		1,513,600			1,277,057
Total deposits		8,941,758			7,043,588
Federal Home Loan Bank borrowings		1,131,253			948,203
Other short-term borrowings		294,281			184,805
Subordinated debt and junior subordinated debt		189,745			164,327
Total borrowings		1,615,279			1,297,335
Accrued interest payable		6,623			3,178
Other liabilities		108,550			76,756
Total Liabilities		10,672,210			8,420,857
SHAREHOLDERS’ EQUITY
Preferred stock, no par value; 1,000,000 shares authorized; none outstanding		—			—
Common stock, $2.0833 par value; 100,000,000 shares authorized in 2018 and 2017, respectively; 54,604,294 and 44,043,244 shares issued, respectively; 54,603,967 and 44,043,244 shares outstanding, respectively		113,758			91,756
Capital surplus		1,165,006			684,730
Retained earnings		709,477			651,357
Treasury stock (327 and 0 shares—at cost, respectively)		(15	)		—
Accumulated other comprehensive loss		(59,873	)		(31,495	)
Deferred benefits for directors		(1,084	)		(1,027	)
Total Shareholders’ Equity		1,927,269			1,395,321
Total Liabilities and Shareholders’ Equity	$	12,599,479		$	9,816,178

See Notes to Consolidated Financial Statements.

3

WESBANCO, INC. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	For the Three Months Ended					For the Nine Months Ended
	September 30,					September 30,
(unaudited, in thousands, except shares and per share amounts)	2018		2017			2018		2017
INTEREST AND DIVIDEND INCOME
Loans, including fees	$	86,605	$	70,342		$	234,276	$	202,600
Interest and dividends on securities:
Taxable		14,964		9,711			40,702		28,682
Tax-exempt		5,326		4,862			15,216		14,617
Total interest and dividends on securities		20,290		14,573			55,918		43,299
Other interest income		1,498		574			3,402		1,674
Total interest and dividend income		108,393		85,489			293,596		247,573
INTEREST EXPENSE
Interest bearing demand deposits		3,501		1,814			9,174		4,413
Money market deposits		1,360		751			3,332		1,970
Savings deposits		352		189			768		555
Certificates of deposit		3,276		2,610			8,789		7,512
Total interest expense on deposits		8,489		5,364			22,063		14,450
Federal Home Loan Bank borrowings		6,691		3,628			17,142		9,608
Other short-term borrowings		965		394			2,497		954
Subordinated debt and junior subordinated debt		2,315		1,849			6,425		5,449
Total interest expense		18,460		11,235			48,127		30,461
NET INTEREST INCOME		89,933		74,254			245,469		217,112
Provision for credit losses		1,035		2,516			4,911		7,610
Net interest income after provision for credit losses		88,898		71,738			240,558		209,502
NON-INTEREST INCOME
Trust fees		6,265		5,358			18,520		17,073
Service charges on deposits		6,313		5,320			16,282		15,254
Electronic banking fees		6,139		4,883			16,697		14,395
Net securities brokerage revenue		1,836		1,721			5,315		5,164
Bank-owned life insurance		1,232		1,164			5,116		3,671
Mortgage banking income		1,521		1,103			4,297		3,511
Net securities gains		84		6			403		511
Net gain/(loss) on other real estate owned and other assets		150		(298	)		641		9
Other income		2,684		1,642			6,444		6,318
Total non-interest income		26,224		20,899			73,715		65,906
NON-INTEREST EXPENSE
Salaries and wages		30,335		24,957			82,213		71,575
Employee benefits		7,905		7,728			22,782		23,670
Net occupancy		4,957		4,132			13,715		12,969
Equipment		4,488		3,905			12,532		12,043
Marketing		1,446		1,599			3,967		4,482
FDIC insurance		789		945			2,315		2,677
Amortization of intangible assets		1,821		1,223			4,218		3,736
Restructuring and merger-related expense		10,811		—			16,468		491
Other operating expenses		13,568		11,265			36,024		34,380
Total non-interest expense		76,120		55,754			194,234		166,023
Income before provision for income taxes		39,002		36,883			120,039		109,385
Provision for income taxes		6,516		10,527			20,855		30,801
NET INCOME	$	32,486	$	26,356		$	99,184	$	78,584
EARNINGS PER COMMON SHARE
Basic	$	0.65	$	0.60		$	2.11	$	1.79
Diluted	$	0.64	$	0.60		$	2.11	$	1.78
AVERAGE COMMON SHARES OUTSTANDING
Basic		50,277,847		44,031,813			46,965,095		43,992,017
Diluted		50,432,112		44,086,881			47,107,829		44,059,469
DIVIDENDS DECLARED PER COMMON SHARE	$	0.29	$	0.26		$	0.87	$	0.78
COMPREHENSIVE INCOME	$	25,965	$	27,637		$	71,869	$	84,873

See Notes to Consolidated Financial Statements.

4

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

For the Nine Months Ended September 30, 2018 and 2017

															Accumulated
	Common Stock														Other			Deferred
(unaudited, in thousands, except shares and per share amounts)	Shares					Capital			Retained			Treasury			Comprehensive			Benefits for
	Outstanding			Amount		Surplus			Earnings			Stock			(Loss) Income			Directors			Total
December 31, 2017		44,043,244		$	91,756	$	684,730		$	651,357		$	—		$	(31,495	)	$	(1,027	)	$	1,395,321
Net income		—			—		—			99,184			—			—			—			99,184
Other comprehensive income		—			—		—			—			—			(27,315	)		—			(27,315	)
Comprehensive income		—			—		—			—			—			—			—			71,869
Common dividends declared ($0.87 per share)		—			—		—			(42,127	)		—			—			—			(42,127	)
Adoption of accounting standard ASU 2016-01		—			—		—			1,063			—			(1,063	)		—			—
Shares issued for FTSB acquisition		2,498,761			5,206		102,141			—			—			—			—			107,347
Shares issued for FFKT acquisition		7,920,387			16,487		374,464			—			316			—			—			391,267
Treasury shares acquired		(15,489	)		—		34			—			(730	)		—			—			(696	)
Stock options exercised		58,763			104		1,346			—			399			—			—			1,849
Restricted stock granted		98,301			205		(205	)		—			—			—			—			—
Stock compensation expense		—			—		2,933			—			—			—			—			2,933
Deferred benefits for directors- net		—			—		(437	)		—			—			—			(57	)		(494	)
September 30, 2018		54,603,967		$	113,758	$	1,165,006		$	709,477		$	(15	)	$	(59,873	)	$	(1,084	)	$	1,927,269
December 31, 2016		43,931,715		$	91,524	$	680,507		$	597,071		$	—		$	(27,126	)	$	(568)		$	1,341,408
Net income		—			—		—			78,584			—			—			—			78,584
Other comprehensive income		—			—		—			—			—			6,289			—			6,289
Comprehensive income		—			—		—			—			—			—			—			84,873
Common dividends declared ($0.78 per share)		—			—		—			(34,326	)		—			—			—			(34,326	)
Treasury shares acquired		(12,987	)		—		—			—			(488	)		—			—			(488	)
Stock options exercised		40,834			75		858			—			188			—			—			1,121
Restricted stock granted		74,023			154		(154	)		—			—			—			—			—
Stock compensation expense		—			—		1,970			—			—			—			—			1,970
Deferred benefits for directors- net		—			—		167			—			—			—			(167	)		—
September 30, 2017		44,033,585		$	91,753	$	683,348		$	641,329		$	(300	)	$	(20,837	)	$	(735)		$	1,394,558

See Notes to Consolidated Financial Statements.

5

WESBANCO, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS

	For the Nine Months Ended
	September 30,
(unaudited, in thousands)	2018			2017
NET CASH PROVIDED BY OPERATING ACTIVITIES	$	122,444		$	93,506
INVESTING ACTIVITIES
Net decrease (increase) in loans held for investment		52,411			(122,332	)
Debt securities available-for-sale:
Proceeds from sales		82,134			7,760
Proceeds from maturities, prepayments and calls		188,020			156,944
Purchases of securities		(688,020	)		(225,404	)
Debt securities held-to-maturity:
Proceeds from maturities, prepayments and calls		51,973			90,457
Purchases of securities		(66,058	)		(53,251	)
Equity securities:
Proceeds from sales		1,511			—
Purchases of securities		(431	)		—
Proceeds from bank-owned life insurance		4,772			349
Purchases of premises and equipment – net		(2,400	)		(6,223	)
Net cash received from acquisitions		278,654			—
Sale of portfolio loans—net		12,996			—
Net cash used in investing activities		(84,438	)		(151,700	)
FINANCING ACTIVITIES
(Decrease) increase in deposits		(20,443	)		61,389
Proceeds from Federal Home Loan Bank borrowings		575,000			560,000
Repayment of Federal Home Loan Bank borrowings		(447,381	)		(513,911	)
Increase in other short-term borrowings		90,043			20,200
Decrease in federal funds purchased		(25,000	)		(54,000	)
Repayment of junior subordinated debt		(17,519	)		—
Dividends paid to common shareholders		(37,751	)		(33,416	)
Issuance of common stock		1,578			991
Treasury shares purchased—net		(425	)		(358	)
Net cash provided by financing activities		118,102			40,895
Net increase (decrease) in cash and cash equivalents		156,108			(17,299	)
Cash and cash equivalents at beginning of the period		117,572			128,170
Cash and cash equivalents at end of the period	$	273,680		$	110,871
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	$	46,524		$	29,857
Income taxes paid		13,050			20,825
Transfers of loans to other real estate owned		393			506
Transfers of loans to held for sale		12,996			—
Non-cash transactions related to FTSB acquisition		107,347			—
Non-cash transactions related to FFKT acquisition		391,267			—

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, 2017.

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 2017 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. Certain prior period amounts have been reclassified to conform to the current period presentation. Such reclassifications had no impact on WesBanco’s net income and stockholders’ equity. 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 August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-15, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract.” This ASU specifically aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. The ASU does not affect the accounting for the service element of a hosting arrangement that is a service contract. The guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2018-15 on WesBanco’s Consolidated Financial Statements.

In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans.” This ASU modifies ASC 715-20 to improve disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance is effective for fiscal years ending after December 15, 2020. Early adoption is permitted. WesBanco is currently assessing the impact of ASU 2018-14 on WesBanco’s Consolidated Financial Statements.

In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement – Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement.” This ASU modifies the disclosure objective paragraphs of ASC 820 to eliminate (1) “at a minimum” from the phrase “an entity shall disclose at a minimum” and (2) other similar “open ended” disclosure requirements to promote the appropriate exercise of discretion of entities. The guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2018-13 on WesBanco’s Consolidated Financial Statements.

In August 2017, the FASB issued ASU 2017-12, “Targeted Improvements to Accounting for Hedging Activities.” The new guidance will make more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amends the presentation and disclosure requirements and changes how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2017-12 on WesBanco’s Consolidated Financial Statements.

In March 2017, the FASB issued ASU 2017-07 that changes how an employer presents the net periodic benefit cost in the income statement for an employer-sponsored defined benefit pension and/or other postretirement benefit plans. Employers will present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit cost separately from the line items that includes the service cost outside of any subtotal of operating income, if one is presented. These components will not be eligible for capitalization in assets. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual period (i.e., only in the first interim period). For WesBanco, this update was effective for the fiscal year beginning January 1, 2018. Upon adoption, WesBanco reclassified the service cost component from employee benefits to salaries and wages, which are both components of non-interest expense. The service cost component for the three and nine months ended September 30, 2018 was $0.7 and $2.1 million, respectively.

In January 2017, the FASB issued ASU 2017-01, which clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In October 2016, the FASB issued ASU 2016-16 that provides the recognition of income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Current guidance prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. This prohibition on recognition is an exception to the principle of comprehensive recognition of current and deferred income taxes in generally accepted accounting principles. The exception has led to diversity in practice and is a source of complexity in financial reporting. FASB decided that an entity should recognize the income tax consequences of an intra-entity transfer of an asset

7

other than inventory when the transfer occurs. Consequently, the amendments in this update eliminate the exception for an intra-entity transfer of an asset other than inventory. The amendments in this update do not include new disclosure requirements; however, existing disclosure requirements might be applicable when accounting for the current and deferred income taxes for an intra-entity transfer of an asset other than inventory. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The amendments in this update were to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15 that provides guidance for the classification of cash flows related to (1) debt prepayment or extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon rates that are insignificant in relation to the effective interest rate on the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions and (8) separately identifiable cash flows and application of the predominance principle. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In September 2016, the FASB issued ASU 2016-13 that will require entities to use a new forward-looking “expected loss” model on trade and other receivables, held-to-maturity debt securities, loans and other instruments that generally will result in the earlier recognition of allowances for credit losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. Entities will have to disclose significantly more information, including information they use to track credit quality by year of origination for most financing receivables. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, which for WesBanco will be effective for the fiscal year beginning January 1, 2020. Early adoption is permitted for fiscal years beginning after December 15, 2018. WesBanco has completed an initial data gap assessment, is currently finalizing the loan segmentation procedures and evaluating the various forecasting and modeling assumptions that will be used to estimate the initial current expected credit loss allowance.

In February 2016, the FASB issued ASU 2016-02 that will require entities to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. The principal difference from previous guidance is that the lease assets and lease liabilities arising from operating leases were not previously recognized in the balance sheet. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. In January 2018, the FASB issued ASU 2018-01, which allows entities the option to apply the provisions of the new lease guidance at the effective date without adjusting the comparative periods presented. In July 2018, the FASB issued ASU 2018-10, which provides narrow-scope improvements to the lease standard. While we are currently assessing the impact of the adoption of this pronouncement, we expect the primary impact to our consolidated financial position upon adoption will be the recognition, on a discounted basis, of our minimum commitments under non-cancellable operating leases on our Consolidated Balance Sheets resulting in the recording of right of use assets and lease obligations, which are expected to total approximately $15 million to $20 million. The estimate could change based on new leases entered into or amended before January 1, 2019.

In January 2016, the FASB issued ASU 2016-01 that will require entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income unless the investments qualify for the new practicability exception. The standard does not change the guidance for classifying and measuring investments in debt securities and loans. Entities will have to record changes in instrument-specific credit risk for financial liabilities measured under the fair value option in other comprehensive income. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. In February 2018, the FASB issued ASU 2018-03, which clarifies certain aspects of the guidance issued in ASU 2016-01. WesBanco adopted these pronouncements as of January 1, 2018 and recognized a $1.1 million adjustment to retained earnings upon adoption of this pronouncement. In addition, WesBanco reclassified investment securities on the Consolidated Financial Statements into the following – equity securities, available-for-sale debt securities and held-to-maturity debt securities.

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. On July 9, 2015, the FASB approved a one-year deferral of the effective date of the update. The update is effective for interim and annual reporting periods in fiscal years beginning after December 15, 2017. In March 2016, the FASB issued ASU 2016-08, which amends the principle versus agent guidance in the revenue standard. In April 2016, the FASB issued ASU 2016-10, which clarifies when promised goods or services are separately identifiable in the revenue standard. In May 2016, FASB issued ASU 2016-12, which provides narrow-scope improvements and practical expedients to the revenue standard. WesBanco adopted these pronouncements as of January 1, 2018 using the modified retrospective approach. WesBanco noted no material change to the timing of revenue recognition and there was no material impact on WesBanco’s Consolidated Financial Statements. See Note 9, “Revenue Recognition” for further discussion on revenue within the scope of ASC 606.

8

NOTE 2. MERGERS AND ACQUISITIONS

First Sentry Bancshares, Inc. (“FTSB”)

On April 5, 2018, WesBanco completed its acquisition of FTSB, a bank holding company headquartered in Huntington, WV. On the acquisition date, FTSB had approximately $705.6 million in assets, excluding goodwill, which included approximately $448.1 million in loans and $142.9 million in securities. The FTSB acquisition was valued at $108.3 million, based on WesBanco’s closing stock price on April 5, 2018, of $42.96, and resulted in WesBanco issuing 2,498,761 shares of its common stock and $1.0 million in cash in exchange for all of the outstanding shares of FTSB common stock including stock options. The assets and liabilities of FTSB were recorded on WesBanco’s Balance Sheet at their preliminary estimated fair values as of April 5, 2018, the acquisition date, and FTSB’s results of operations have been included in WesBanco’s Consolidated Statements of Income since that date. The fair values for certain assets and liabilities acquired from FTSB on April 5, 2018 represent preliminary estimates. Based on a preliminary purchase price allocation, WesBanco recorded $66.8 million in goodwill and $8.1 million in core deposit intangibles in its Community Banking segment. None of the goodwill is deductible for income tax purposes, as the acquisition is accounted for as a tax-free exchange for tax purposes. As a result of the full integration of the operations of FTSB, it is not practicable to determine revenue or net income included in WesBanco’s operating results relating to FTSB since the date of acquisition, as FTSB’s results cannot be separately identified.

For the nine months ended September 30, 2018, WesBanco recorded merger-related expenses of $5.5 million associated with the FTSB acquisition.

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

(unaudited, in thousands)	April 5, 2018
Purchase Price:
Fair value of WesBanco shares issued	$	107,347
Cash consideration for outstanding FTSB shares		975
Total purchase price	$	108,322
Fair value of:
Tangible assets acquired	$	610,443
Core deposit and other intangible assets acquired		8,078
Liabilities assumed		(664,172	)
Net cash received in the acquisition		87,124
Fair value of net assets acquired		41,473
Goodwill recognized	$	66,849

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 FTSB within one year from the date of acquisition:

(unaudited, in thousands)	April 5, 2018
Assets acquired
Cash and due from banks	$	87,124
Securities		142,903
Loans		448,075
Goodwill and other intangible assets		74,927
Accrued income and other assets		19,465
Total assets acquired	$	772,494
Liabilities assumed
Deposits	$	590,065
Borrowings		70,710
Accrued expenses and other liabilities		3,397
Total liabilities assumed	$	664,172
Net assets acquired	$	108,322

9

The following table presents the changes in the allocation of the purchase price of the assets acquired and the liabilities assumed at the date of the acquisition previously reported as of June 30, 2018:

(unaudited, in thousands)	April 5, 2018
Goodwill recognized as of June 30, 2018	$	66,219
Change in fair value of net assets acquired:
Assets
Loans		(264	)
Other intangible assets		(159	)
Accrued income and other assets		(6	)
Liabilities
Deposits		(47	)
Accrued expenses and other liabilities		(154	)
Fair value of net assets acquired	$	(630	)
Increase in goodwill recognized		630
Goodwill recognized as of September 30, 2018	$	66,849

The fair value estimates for loans, deferred taxes and other liabilities have continued to fluctuate as the final valuations and/or appraisals are completed. The Company expects to finalize the purchase price accounts of FTSB within one year of the date of acquisition.

Farmers Capital Bank Corporation (“FFKT”)

On August 20, 2018, WesBanco completed its acquisition of FFKT, a bank holding company headquartered in Frankfort, KY. On the acquisition date, FFKT had approximately $1.6 billion in assets, excluding goodwill, which included approximately $1.0 billion in loans and $239.3 million in securities. The FFKT acquisition was valued at $428.9 million, based on WesBanco’s closing stock price on August 20, 2018, of $49.40, and resulted in WesBanco issuing 7,920,387 shares of its common stock and $37.6 million in cash in exchange for all of the outstanding shares of FFKT common stock. The assets and liabilities of FFKT were recorded on WesBanco’s Balance Sheet at their preliminary estimated fair values as of August 20, 2018, the acquisition date, and FFKT’s results of operations have been included in WesBanco’s Consolidated Statements of Income since that date. Due to the timing of the acquisition relative to the end of the reporting period, the fair values for certain assets and liabilities acquired from FFKT on August 20, 2018 represent preliminary estimates. Based on a preliminary purchase price allocation, WesBanco recorded $225.1 million in goodwill and $39.7 million in core deposit intangibles in its community banking segment and $2.9 million in trust customer relationship intangibles in its trust and investment services segment. None of the goodwill is deductible for income tax purposes, as the acquisition is accounted for as a tax-free exchange for tax purposes. As a result of the full integration of the operations of FFKT, it is not practicable to determine revenue or net income included in WesBanco’s operating results relating to FFKT since the date of acquisition, as FFKT’s results cannot be separately identified.

For the nine months ended September 30, 2018, WesBanco recorded merger-related expenses of $11.0 million associated with the FFKT acquisition.

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

(unaudited, in thousands)	August 20, 2018
Purchase Price:
Fair value of WesBanco shares issued	$	391,267
Cash consideration for outstanding FFKT shares		37,634
Total purchase price	$	428,901
Fair value of:
Tangible assets acquired	$	1,360,951
Core deposit and other intangible assets acquired		42,593
Liabilities assumed		(1,429,874	)
Net cash received in the acquisition		230,139
Fair value of net assets acquired		203,809
Goodwill recognized	$	225,092

10

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 FFKT within one year from the date of acquisition:

(unaudited, in thousands)	August 20, 2018
Assets acquired
Cash and due from banks	$	230,139
Securities		239,321
Loans		1,028,120
Goodwill and other intangible assets		267,685
Accrued income and other assets		93,510
Total assets acquired	$	1,858,775
Liabilities assumed
Deposits	$	1,330,328
Borrowings		71,780
Accrued expenses and other liabilities		27,766
Total liabilities assumed	$	1,429,874
Net assets acquired	$	428,901

NOTE 3. EARNINGS PER COMMON SHARE

Earnings per common share are calculated as follows:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(unaudited, in thousands, except shares and per share amounts)	2018		2017		2018		2017
Numerator for both basic and diluted earnings per common share:
Net income	$	32,486	$	26,356	$	99,184	$	78,584
Denominator:
Total average basic common shares outstanding		50,277,847		44,031,813		46,965,095		43,992,017
Effect of dilutive stock options and other stock compensation		154,265		55,068		142,734		67,452
Total diluted average common shares outstanding		50,432,112		44,086,881		47,107,829		44,059,469
Earnings per common share—basic	$	0.65	$	0.60	$	2.11	$	1.79
Earnings per common share—diluted	$	0.64	$	0.60	$	2.11	$	1.78

All options to purchase shares were included in the computation of net income per diluted share for the three months ended September 30, 2018 while 117,550 shares were not included in the computation of net income per diluted share for the three months ended September 30, 2017 because the exercise price was greater than the average market price of the common shares and, therefore, the effect would be antidilutive. Options to purchase 117,600 shares at September 30, 2018 were not included in the computation of net income per diluted share for the nine months ended September 30, 2018 because the exercise price was greater than the average market price of the common shares, and therefore, the effect would be antidilutive. All stock options were included in the computation of net income per diluted share for the nine months ended September 30, 2017.

As of September 30, 2018, contingently issuable shares totaling 45,840, were estimated to be awarded under the 2018 and 2017 total shareholder return plans as stock performance targets have been met to date and are included in the diluted calculation. As of September 30, 2018, the shares related to the 2016 total shareholder return plan were not included in the calculation because the effect would be antidilutive. Performance-based restricted stock compensation totaling 17,081 shares were estimated to be awarded as of September 30, 2018 and are included in the diluted calculation for both the three months and nine months ended September 30, 2018. As of September 30, 2017, the shares related to the 2017 and 2016 total shareholder return plan were not included in the calculation because the effect would be antidilutive. Performance-based restricted stock compensation totaling 4,502 shares were estimated to be awarded as of September 30, 2017, and are included in the diluted calculation for both the three months and nine months ended September 30, 2017.

On April 5, 2018, WesBanco issued 2,498,761 shares of common stock to complete its acquisition of FTSB and granted 9,465 shares of restricted stock to certain FTSB employees. These shares are included in average shares outstanding beginning on that date. For additional information relating to the FTSB acquisition, refer to Note 2, “Mergers and Acquisitions.”

On August 20, 2018, WesBanco issued 7,920,387 shares of common stock, 6,690 of which were treasury stock, to complete its acquisition of FFKT and granted 18,685 shares of restricted stock to certain FFKT employees. These shares are included in average shares outstanding beginning on that date. For additional information relating to the FFKT acquisition, refer to Note 2, “Mergers and Acquisitions.”

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NOTE 4. SECURITIES

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

	September 30, 2018									December 31, 2017
(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 debt securities
U.S. Treasury	$	9,952	$	—	$	(15	)	$	9,937	$	—	$	—	$	—		$	—
U.S. Government sponsored entities and agencies		154,054		17		(4,122	)		149,949		72,425		24		(606	)		71,843
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		1,500,563		44		(50,853	)		1,449,754		954,115		214		(19,407	)		934,922
Commerical mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		174,331		15		(5,585	)		168,761		116,448		4		(1,585	)		114,867
Obligations of states and political subdivisions		187,501		1,445		(2,295	)		186,651		102,363		2,927		(460	)		104,830
Corporate debt securities		43,259		160		(239	)		43,180		35,234		228		(59	)		35,403
Total available-for-sale debt securities	$	2,069,660	$	1,681	$	(63,109	)	$	2,008,232	$	1,280,585	$	3,397	$	(22,117	)	$	1,261,865
Held-to-maturity debt securities
U.S. Government sponsored entities and agencies	$	11,699	$	—	$	(615	)	$	11,084	$	11,465	$	—	$	(325	)	$	11,140
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		154,018		103		(6,788	)		147,333		170,025		544		(2,609	)		167,960
Obligations of states and political subdivisions		826,514		6,434		(9,743	)		823,205		794,655		17,364		(1,609	)		810,410
Corporate debt securities		33,307		5		(573	)		32,739		33,355		919		—			34,274
Total held-to-maturity debt securities	$	1,025,538	$	6,542	$	(17,719	)	$	1,014,361	$	1,009,500	$	18,827	$	(4,543	)	$	1,023,784
Total debt securities	$	3,095,198	$	8,223	$	(80,828	)	$	3,022,593	$	2,290,085	$	22,224	$	(26,660	)	$	2,285,649

At September 30, 2018, and December 31, 2017, there were no holdings of any one issuer, other than U.S. government sponsored entities and its agencies, in an amount greater than 10% of WesBanco’s shareholders’ equity.

Equity securities, of which $8.5 million consist of investments in various mutual funds held in grantor trusts formed in connection with the Company’s deferred compensation plan, are recorded at fair value and totaled $12.8 million and $13.5 million at September 30, 2018 and December 31, 2017, respectively.

The following table presents the fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at September 30, 2018. In some instances, the issuers may have the right to call or prepay obligations without penalty prior to the contractual maturity date.

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	September 30, 2018
(unaudited, in thousands)	One Year or less		One to Five Years		Five to Ten Years		After Ten Years		Mortgage-backed securities		Total
Available-for-sale debt securities
U.S. Treasury	$	9,937	$	—	$	—	$	—	$	—	$	9,937
U.S. Government sponsored entities and agencies		10,479		6,260		17,881		15,298		100,031		149,949
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		1,449,754		1,449,754
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		168,761		168,761
Obligations of states and political subdivisions		9,288		48,959		76,972		51,432		—		186,651
Corporate debt securities		8,014		33,251		1,915		—		—		43,180
Total available-for-sale debt securities	$	37,718	$	88,470	$	96,768	$	66,730	$	1,718,546	$	2,008,232
Held-to-maturity debt securities (2)
U.S. Government sponsored entities and agencies	$	—	$	—	$	—	$	—	$	11,084	$	11,084
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		147,333		147,333
Obligations of states and political subdivisions		6,149		138,709		387,775		290,572		—		823,205
Corporate debt securities		—		7,449		25,290		—		—		32,739
Total held-to-maturity debt securities	$	6,149	$	146,158	$	413,065	$	290,572	$	158,417	$	1,014,361
Total debt securities	$	43,867	$	234,628	$	509,833	$	357,302	$	1,876,963	$	3,022,593

⁽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⁾  The held-to-maturity debt securities portfolio is carried at an amortized cost of $1.0 billion.

Securities with aggregate fair values of $1.9 billion and $1.4 billion at September 30, 2018 and December 31, 2017, 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 $82.1 million and $7.8 million for the nine months ended September 30, 2018 and 2017, respectively. Net unrealized losses on available-for-sale securities included in accumulated other comprehensive income net of tax, as of September 30, 2018 and December 31, 2017 were $47.3 million and $13.3 million, respectively.

The following table presents the gross realized gains and losses on sales and calls of available-for-sale and held-to-maturity debt securities, as well as gains and losses on equity securities for the three and nine months ended September 30, 2018 and 2017, respectively.

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	2018			2017			2018			2017
Debt securities:
Gross realized gains	$	88		$	29		$	100		$	603
Gross realized losses		(13	)		(23	)		(31	)		(92	)
Net gains on debt securities	$	75		$	6		$	69		$	511
Equity securities:
Unrealized gains recognized on securities still held	$	11		$	—		$	330		$	—
Net realized (losses) gains recognized on securities sold		(2	)		—			4			—
Net gains on equity securities	$	9		$	—		$	334		$	—
Net securities gains	$	84		$	6		$	403		$	511

13

The following tables provide information on unrealized losses on debt securities that have been in an unrealized loss position for less than twelve months and twelve months or more as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	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
U.S. Treasury	$	9,937	$	(15	)		1	$	—	$	—			—	$	9,937	$	(15	)		1
U.S. Government sponsored entities and agencies		93,881		(2,264	)		38		60,410		(2,473	)		11		154,291		(4,737	)		49
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		759,415		(13,670	)		188		822,774		(43,971	)		260		1,582,189		(57,641	)		448
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		79,056		(1,239	)		15		86,703		(4,346	)		11		165,759		(5,585	)		26
Obligations of states and political subdivisions		493,252		(7,866	)		855		120,843		(4,172	)		236		614,095		(12,038	)		1091
Corporate debt securities		42,816		(738	)		17		1,915		(74	)		1		44,731		(812	)		18
Total temporarily impaired securities	$	1,478,357	$	(25,792	)		1,114	$	1,092,645	$	(55,036	)		519	$	2,571,002	$	(80,828	)		1,633
	December 31, 2017
	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
U.S. Government sponsored entities and agencies	$	24,776	$	(160	)		4	$	42,248	$	(771	)		8	$	67,024	$	(931	)		12
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		423,794		(5,039	)		87		637,461		(16,977	)		193		1,061,255		(22,016	)		280
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		79,061		(1,089	)		10		27,852		(496	)		6		106,913		(1,585	)		16
Obligations of states and political subdivisions		132,831		(852	)		210		77,554		(1,217	)		160		210,385		(2,069	)		370
Corporate debt securities		4,015		(19	)		1		1,948		(40	)		1		5,963		(59	)		2
Total temporarily impaired securities	$	664,477	$	(7,159	)		312	$	787,063	$	(19,501	)		368	$	1,451,540	$	(26,660	)		680

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 substantially all debt securities are rated above 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, Cincinnati and Indianapolis stock totaling $53.8 million and $45.9 million at September 30, 2018 and December 31, 2017, 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.

14

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, and discounts on purchased loans. The net deferred loan costs were $2.8 million and $1.6 million at September 30, 2018 and December 31, 2017, respectively. The unamortized discount on purchased portfolio loans from acquisitions was $54.3 million, including $6.7 million related to FTSB and $25.9 million related to FFKT, and $21.9 million at September 30, 2018 and December 31, 2017, respectively.

(unaudited, in thousands)	September 30, 2018		December 31, 2017
Commercial real estate:
Land and construction	$	538,922	$	392,597
Improved property		3,367,299		2,601,851
Total commercial real estate		3,906,221		2,994,448
Commercial and industrial		1,292,073		1,125,327
Residential real estate		1,598,477		1,353,301
Home equity		604,106		529,196
Consumer		325,546		339,169
Total portfolio loans		7,726,423		6,341,441
Loans held for sale		55,913		20,320
Total loans	$	7,782,336	$	6,361,761

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 Nine Months Ended September 30, 2018 and 2017
(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, 2017:
Allowance for loan losses	$	3,117		$	21,166		$	9,414		$	3,206		$	4,497		$	3,063		$	821		$	45,284
Allowance for loan commitments		119			26			173			7			212			37			—			574
Total beginning allowance for credit losses		3,236			21,192			9,587			3,213			4,709			3,100			821			45,858
Provision for credit losses:
Provision for loan losses		789			(721	)		2,538			1,106			(292	)		541			840			4,801
Provision for loan commitments		67			(3	)		32			2			9			3			—			110
Total provision for credit losses		856			(724	)		2,570			1,108			(283	)		544			840			4,911
Charge-offs		(137	)		(719	)		(871	)		(873	)		(745	)		(2,465	)		(941	)		(6,751	)
Recoveries		400			1,098			970			336			830			1,657			277			5,568
Net charge-offs		263			379			99			(537	)		85			(808	)		(664	)		(1,183	)
Balance at September 30, 2018:
Allowance for loan losses		4,169			20,824			12,051			3,775			4,290			2,796			997			48,902
Allowance for loan commitments		186			23			205			9			221			40			—			684
Total ending allowance for credit losses	$	4,355		$	20,847		$	12,256		$	3,784		$	4,511		$	2,836		$	997		$	49,586
Balance at December 31, 2016:
Allowance for loan losses	$	4,348		$	18,628		$	8,412		$	4,106		$	3,422		$	3,998		$	760		$	43,674
Allowance for loan commitments		151			17			188			9			162			44			—			571
Total beginning allowance for credit losses		4,499			18,645			8,600			4,115			3,584			4,042			760			44,245
Provision for credit losses:
Provision for loan losses		415			1,619			2,842			(203	)		1,259			922			680			7,534
Provision for loan commitments		(18	)		4			45			—			49			(4	)		—			76
Total provision for credit losses		397			1,623			2,887			(203	)		1,308			918			680			7,610
Charge-offs		—			(1,752	)		(2,255	)		(797	)		(372	)		(2,877	)		(947	)		(9,000	)
Recoveries		89			492			649			266			180			1,336			267			3,279
Net charge-offs		89			(1,260	)		(1,606	)		(531	)		(192	)		(1,541	)		(680	)		(5,721	)
Balance at September 30, 2017:
Allowance for loan losses		4,852			18,987			9,648			3,372			4,489			3,379			760			45,487
Allowance for loan commitments		133			21			233			9			211			40			—			647
Total ending allowance for credit losses	$	4,985		$	19,008		$	9,881		$	3,381		$	4,700		$	3,419		$	760		$	46,134

15

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		Deposit Over- draft		Total
September 30, 2018
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Allowance for loans collectively evaluated for impairment		4,169		20,824		12,051		3,775		4,290		2,796		997		48,902
Allowance for loan commitments		186		23		205		9		221		40		—		684
Total allowance for credit losses	$	4,355	$	20,847	$	12,256	$	3,784	$	4,511	$	2,836	$	997	$	49,586
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Collectively evaluated for impairment		537,699		3,361,315		1,291,296		1,595,547		604,106		325,419		—		7,715,382
Acquired with deteriorated credit quality		1,223		5,984		777		2,930		—		127		—		11,041
Total portfolio loans	$	538,922	$	3,367,299	$	1,292,073	$	1,598,477	$	604,106	$	325,546	$	—	$	7,726,423
December 31, 2017
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	388	$	—	$	—	$	—	$	—	$	—	$	388
Allowance for loans collectively evaluated for impairment		3,117		20,778		9,414		3,206		4,497		3,063		821		44,896
Allowance for loan commitments		119		26		173		7		212		37		—		574
Total allowance for credit losses	$	3,236	$	21,192	$	9,587	$	3,213	$	4,709	$	3,100	$	821	$	45,858
Portfolio loans:
Individually evaluated for impairment (1)	$	—	$	3,344	$	—	$	—	$	—	$	—	$	—	$	3,344
Collectively evaluated for impairment		391,140		2,593,393		1,124,544		1,352,587		529,196		339,163		—		6,330,023
Acquired with deteriorated credit quality		1,457		5,114		783		714		—		6		—		8,074
Total portfolio loans	$	392,597	$	2,601,851	$	1,125,327	$	1,353,301	$	529,196	$	339,169	$	—	$	6,341,441

⁽¹⁾  Commercial loans greater than $1 million that are reported as non-accrual or as a 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.

Commercial and industrial loans consist of revolving lines of credit to finance accounts receivable, inventory and other general business purposes; term loans to finance fixed assets other than real estate, and letters of credit to support trade, insurance or governmental requirements for a variety of businesses. Most C&I borrowers are privately-held companies with annual sales up to $100 million. 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 paragraphs provide descriptions of risk grades that are applicable 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.

16

Criticized or compromised loans are currently protected but have weaknesses, which, if not corrected, may be inadequately protected 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:

	Commercial 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 September 30, 2018
Pass	$	533,982	$	3,314,324	$	1,272,181	$	5,120,487
Criticized—compromised		2,909		31,399		12,062		46,370
Classified—substandard		2,031		21,576		7,830		31,437
Classified—doubtful		—		—		—		—
Total	$	538,922	$	3,367,299	$	1,292,073	$	5,198,294
As of December 31, 2017
Pass	$	386,753	$	2,548,805	$	1,110,267	$	4,045,825
Criticized—compromised		2,984		25,673		7,435		36,092
Classified—substandard		2,860		27,373		7,625		37,858
Classified—doubtful		—		—		—		—
Total	$	392,597	$	2,601,851	$	1,125,327	$	4,119,775

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 was $20.6 million at September 30, 2018 and $22.8 million at December 31, 2017, of which $2.2 million and $2.5 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 FFKT Loans – In conjunction with the FFKT acquisition, WesBanco acquired loans with a book value of $1,064.8 million as of August 20, 2018. These loans were recorded at the preliminary fair value of $1,028.1 million, with $1,016.9 million categorized as ASC 310-20 loans. The fair market value adjustment on these loans of $26.4 million at the acquisition date is expected to be recognized into interest income on a level yield basis over the remaining expected life of the loans.

Loans acquired with deteriorated credit quality with a book value of $2.7 million were recorded at the preliminary fair value of $2.4 million, of which all were accounted for under the cost recovery method in accordance with ASC 310-30 as cash flows cannot be reasonably estimated, and categorized as non-accrual.

The carrying amount of loans acquired with deteriorated credit quality at September 30, 2018 was $2.1 million, while the outstanding customer balance was $2.4 million. At September 30, 2018 no allowance for loan losses has been recognized related to the acquired impaired loans.

Certain acquired underperforming loans with a book value of $45.2 million were transferred to loans held for sale prior to September 30, 2018 at the preliminary fair value of $35.2 million.

Acquired FTSB Loans – In conjunction with the FTSB acquisition, WesBanco acquired loans with a book value of $465.9 million as of April 5, 2018. These loans were recorded at the preliminary fair value of $448.1 million, with $440.1 million categorized as ASC 310-20 loans. The fair market value adjustment on these loans of $9.7 million at acquisition date is expected to be recognized into interest income on a level yield basis over the remaining expected life of the loans.

17

Loans acquired with deteriorated credit quality with a book value of $4.1 million were recorded at the preliminary fair value of $2.0 million, of which $0.7 million were accounted for under the cost recovery method in accordance with ASC 310-30 as cash flows cannot be reasonably estimated, and categorized as non-accrual.

The carrying amount of loans acquired with deteriorated credit quality at September 30, 2018 was $1.7 million, while the outstanding customer balance was $3.8 million. At September 30, 2018, no allowance for loan losses has been recognized related to the acquired impaired loans.

Certain acquired underperforming loans with a book value of $4.0 million were transferred to loans held for sale prior to September 30, 2018 at the preliminary fair value of $2.8 million.

Certain acquired underperforming loans with a book value of $17.7 million were sold in the second quarter of 2018 for $12.9 million. The acquisition date fair value of the acquired loans was adjusted to the sale price resulting in no gain or loss.

The following table provides changes in accretable yield for loans acquired with deteriorated credit quality:

	For the Nine Months Ended
(unaudited, in thousands)	September 30, 2018			September 30, 2017
Balance at beginning of period	$	1,724		$	1,717
Acquisitions		695			—
Reduction due to change in projected cash flows		(86	)		—
Reclass from non-accretable difference		6,287			1,490
Transfers out		—			(216	)
Accretion		(902	)		(1,384	)
Balance at end of period	$	7,718		$	1,607

18

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 September 30, 2018
Commercial real estate:
Land and construction	$	538,181	$	643	$	98	$	—	$	741	$	538,922	$	—
Improved property		3,357,883		1,657		352		7,407		9,416		3,367,299		88
Total commercial real estate		3,896,064		2,300		450		7,407		10,157		3,906,221		88
Commercial and industrial		1,287,693		776		462		3,142		4,380		1,292,073		114
Residential real estate		1,579,164		8,100		2,708		8,505		19,313		1,598,477		1,225
Home equity		596,477		2,871		1,002		3,756		7,629		604,106		646
Consumer		322,093		2,291		605		557		3,453		325,546		378
Total portfolio loans		7,681,491		16,338		5,227		23,367		44,932		7,726,423		2,451
Loans held for sale		55,913		—		—		—		—		55,913		—
Total loans	$	7,737,404	$	16,338	$	5,227	$	23,367	$	44,932	$	7,782,336	$	2,451
Impaired loans included above are as follows:
Non-accrual loans	$	7,480	$	1,653	$	1,225	$	20,916	$	23,794	$	31,274
TDRs accruing interest (1)		5,667		314		357		—		671		6,338
Total impaired	$	13,147	$	1,967	$	1,582	$	20,916	$	24,465	$	37,612
As of December 31, 2017
Commercial real estate:
Land and construction	$	392,189	$	—	$	172	$	236	$	408	$	392,597	$	—
Improved property		2,589,704		374		1,200		10,573		12,147		2,601,851		243
Total commercial real estate		2,981,893		374		1,372		10,809		12,555		2,994,448		243
Commercial and industrial		1,121,957		572		196		2,602		3,370		1,125,327		20
Residential real estate		1,338,240		4,487		2,376		8,198		15,061		1,353,301		1,113
Home equity		522,584		2,135		683		3,794		6,612		529,196		742
Consumer		334,723		2,466		842		1,138		4,446		339,169		608
Total portfolio loans		6,299,397		10,034		5,469		26,541		42,044		6,341,441		2,726
Loans held for sale		20,320		—		—		—		—		20,320		—
Total loans	$	6,319,717	$	10,034	$	5,469	$	26,541	$	42,044	$	6,361,761	$	2,726
Impaired loans included above are as follows:
Non-accrual loans	$	9,195	$	1,782	$	2,033	$	23,815	$	27,630	$	36,825
TDRs accruing interest (1)		6,055		348		168		—		516		6,571
Total impaired	$	15,250	$	2,130	$	2,201	$	23,815	$	28,146	$	43,396

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

19

The following tables summarize impaired loans:

	Impaired Loans
	September 30, 2018						December 31, 2017
(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	$	—	$	—	$	—	$	412	$	239	$	—
Improved property		14,639		9,928		—		18,229		12,863		—
Commercial and industrial		3,886		3,327		—		3,745		3,086		—
Residential real estate		21,226		18,944		—		20,821		18,982		—
Home equity		5,550		4,728		—		5,833		5,169		—
Consumer		857		685		—		1,084		952		—
Total impaired loans without a specific allowance		46,158		37,612		—		50,124		41,291		—
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—
Improved property		—		—		—		2,105		2,105		388
Commercial and industrial		—		—		—		—		—		—
Total impaired loans with a specific allowance		—		—		—		2,105		2,105		388
Total impaired loans	$	46,158	$	37,612	$	—	$	52,229	$	43,396	$	388

⁽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								For the Nine Months Ended
	September 30, 2018				September 30, 2017				September 30, 2018				September 30, 2017
(unaudited, in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	—	$	—	$	444	$	—	$	260	$	—	$	516	$	—
Improved Property		10,409		15		10,923		31		11,000		383		10,271		400
Commercial and industrial		3,181		5		3,588		2		2,985		9		3,700		6
Residential real estate		18,336		68		17,039		57		18,207		195		17,743		192
Home equity		4,924		8		4,727		4		4,997		19		4,456		14
Consumer		692		3		731		2		776		8		746		5
Total impaired loans without a specific allowance		37,542		99		37,452		96		38,225		614		37,432		617
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—		—		—
Improved Property		—		—		5,137		—		1,052		—		5,032		—
Commercial and industrial		—		—		—		—		—		—		318		—
Total impaired loans with a specific allowance		—		—		5,137		—		1,052		—		5,350		—
Total impaired loans	$	37,542	$	99	$	42,589	$	96	$	39,277	$	614	$	42,782	$	617

20

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

	Non-accrual Loans (1)
(unaudited, in thousands)	September 30, 2018		December 31, 2017
Commercial real estate:
Land and construction	$	—	$	239
Improved property		8,757		13,318
Total commercial real estate		8,757		13,557
Commercial and industrial		3,165		2,958
Residential real estate		14,475		14,661
Home equity		4,283		4,762
Consumer		594		887
Total	$	31,274	$	36,825

⁽¹⁾  At September 30, 2018, there was one borrower with a loan greater than $1.0 million totaling $3.4 million, as compared to three borrowers with loans greater than $1.0 million totaling $6.8 million at December 31, 2017. 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
	September 30, 2018						December 31, 2017
(unaudited, in thousands)	Accruing		Non-Accrual		Total		Accruing		Non-Accrual		Total
Commercial real estate:
Land and construction	$	—	$	—	$	—	$	—	$	3	$	3
Improved property		1,171		640		1,811		1,650		428		2,078
Total commercial real estate		1,171		640		1,811		1,650		431		2,081
Commercial and industrial		162		—		162		128		97		225
Residential real estate		4,469		1,182		5,651		4,321		1,880		6,201
Home equity		445		167		612		407		337		744
Consumer		91		47		138		65		120		185
Total	$	6,338	$	2,036	$	8,374	$	6,571	$	2,865	$	9,436

As of September 30, 2018 and December 31, 2017, there were no 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. WesBanco had unfunded commitments to debtors whose loans were classified as impaired of $0.2 million and $0.1 million as of September 30, 2018 and December 31, 2017, respectively.

The following tables present details related to loans identified as TDRs during the three and nine months ended September 30, 2018 and 2017, respectively:

	New TDRs (1)
	For the Three Months Ended
	September 30, 2018						September 30, 2017
(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		—	$	—	$	—		—	$	—	$	—
Improved Property		—		—		—		1		190		185
Total commercial real estate		—		—		—		1		190		185
Commercial and industrial		—		—		—		—		—		—
Residential real estate		—		—		—		—		—		—
Home equity		—		—		—		2		94		88
Consumer		1		19		18		1		7		6
Total		1	$	19	$	18		4	$	291	$	279

⁽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.

21

	New TDRs (1)
	For the Nine Months Ended
	September 30, 2018						September 30, 2017
(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		—	$	—	$	—		—	$	—	$	—
Improved Property		—		—		—		1		190		185
Total commercial real estate		—		—		—		1		190		185
Commercial and industrial		1		10		8		1		64		59
Residential real estate		5		203		176		2		22		17
Home equity		1		20		19		3		141		132
Consumer		4		65		52		4		42		33
Total		11	$	298	$	255		11	$	459	$	426

⁽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 nine months ended September 30, 2018 and 2017, respectively, that were restructured within the last twelve months prior to September, 2018 and 2017, respectively:

	Defaulted TDRs (1)
	For the Nine Months Ended
	September 30, 2018				September 30, 2017
(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		2		172		1		7
Home equity		1		6		—		—
Consumer		—		—		1		7
Total		3	$	178		2	$	14

⁽¹⁾ Excludes loans that were either charged-off or cured by period end. The recorded investment is as of September 30, 2018 and 2017, respectively.

TDRs that default are placed on non-accrual status unless they are both well-secured and in the process of collection. The loans in the table above were not accruing interest.

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

	September 30, 2018		December 31, 2017
(unaudited, in thousands)
Other real estate owned	$	6,836	$	5,195
Repossessed assets		41		102
Total other real estate owned and repossessed assets	$	6,877	$	5,297

Residential real estate included in other real estate owned at September 30, 2018 and December 31, 2017 was $0.7 million and $1.5 million, respectively. At September 30, 2018 and December 31, 2017, formal foreclosure proceedings were in process on residential real estate loans totaling $6.0 million and $3.5 million, respectively.

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NOTE 6. DERIVATIVES AND HEDGING ACTIVITIES

Risk Management Objective of Using Derivatives

WesBanco is exposed to certain risks arising from both its business operations and economic conditions. WesBanco principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. WesBanco manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities. WesBanco’s existing interest rate derivatives result from a service provided to certain qualifying customers and, therefore, are not used to manage interest rate risk in WesBanco’s assets or liabilities. WesBanco manages a matched book with respect to its derivative instruments in order to minimize its net risk exposure resulting from such transactions. A matched book is when the Bank’s assets and liabilities are equally distributed but also have similar maturities.

Loan Swaps

WesBanco executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously economically hedged by offsetting interest rate swaps that WesBanco executes with a third party, such that WesBanco minimizes its net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements of ASC 815, changes in the fair value of both the customer swaps and the offsetting third-party swaps are recognized directly in earnings. As of September 30, 2018 and December 31, 2017, WesBanco had 42 and 39, respectively, interest rate swaps with an aggregate notional amount of $234.4 million and $298.2 million, respectively, related to this program. During the nine months ended September 30, 2018 and 2017, WesBanco recognized net losses of $0.1 million and $0.3 million, respectively, related to the changes in fair value of these swaps. Additionally, WesBanco recognized $1.4 million and $1.2 million of income for the related swap fees for the nine months ended September 30, 2018 and 2017, respectively.

Mortgage Loans Held for Sale and Loan Commitments

Certain residential mortgage loans are originated for sale in the secondary mortgage loan market. These loans are classified as held for sale and carried at fair value as WesBanco has elected the fair value option. Fair value is determined based on rates obtained from the secondary market for loans with similar characteristics. WesBanco sells loans to the secondary market on a mandatory or best efforts basis. The loans sold on a mandatory basis are not committed to an investor until the loan is closed with the borrower. WesBanco enters into forward TBA contracts to manage the interest rate risk between the loan commitment and the closing of the loan. The loans sold on a best efforts basis are committed to an investor simultaneous to the interest rate commitment with the borrower.

Fair Values of Derivative Instruments on the Balance Sheet

All derivatives are carried on the consolidated balance sheet at fair value. Derivative assets are classified in the consolidated balance sheet under other assets, and derivative liabilities are classified in the consolidated balance sheet under other liabilities. Changes in fair value are recognized in earnings. None of WesBanco’s derivatives are designated in qualifying hedging relationships under ASC 815.

The table below presents the fair value of WesBanco’s derivative financial instruments as well as their classification on the Balance Sheet as of September 30, 2018 and December 31, 2017:

	September 30, 2018						December 31, 2017
(unaudited, in thousands)	Notional or Contractual Amount		Asset Derivatives		Liability Derivatives		Notional or Contractual Amount		Asset Derivatives		Liability Derivatives
Derivatives
Loan Swaps:
Interest rate swaps	$	234,363	$	6,451	$	6,527	$	298,223	$	7,351	$	7,345
Other contracts:
Interest rate loan commitments		27,795		32		—		20,319		49		—
Forward TBA contracts		32,000		148		—		31,750		—		23
Total derivatives			$	6,631	$	6,527			$	7,400	$	7,368

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Effect of Derivative Instruments on the Income Statement

The table below presents the change in the fair value of the Company’s derivative financial instruments reflected within the other non-interest income line item of the consolidated income statement for the three and nine months ended September 30, 2018 and 2017, respectively.

		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	Location of Gain/(Loss)	2018			2017			2018			2017
Interest rate swaps	Other income	$	(293	)	$	(32	)	$	(82	)	$	(335	)
Interest rate loan commitments	Mortgage banking income		(111	)		—			32			123
Forward TBA contracts	Mortgage banking income		131			—			530			—
Total		$	(273	)	$	(32	)	$	480		$	(212	)

Credit-risk-related Contingent Features

WesBanco has agreements with its derivative counterparties that contain a provision where if WesBanco defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then WesBanco could also be declared in default on its derivative obligations.

WesBanco also has agreements with certain of its derivative counterparties that contain a provision where if WesBanco fails to maintain its status as either a well or adequately capitalized institution, then the counterparty could terminate the derivative positions and WesBanco would be required to settle its obligations under the agreements.

WesBanco has minimum collateral posting thresholds with certain of its derivative counterparties and has posted collateral with a market value of $3.7 million as of September 30, 2018. If WesBanco had breached any of these provisions at September 30, 2018, it could have been required to settle its obligations under the agreements at the termination value and would have been required to pay any additional amounts due in excess of amounts previously posted as collateral with the respective counterparty.

NOTE 7. 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 September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	2018			2017			2018			2017
Service cost – benefits earned during year	$	715		$	650		$	2,121		$	1,929
Interest cost on projected benefit obligation		1,242			1,107			3,684			3,287
Expected return on plan assets		(2,416	)		(1,928	)		(7,169	)		(5,721	)
Amortization of prior service cost		6			7			19			19
Amortization of net loss		766			812			2,274			2,409
Net periodic pension cost	$	313		$	648		$	929		$	1,923

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 $5.1 million is due for 2018, which could be all or partially offset by the Plan’s $56.9 million available credit balance. WesBanco made a voluntary contribution of $2.5 million to the Plan in June 2018.

WesBanco assumed YCB’s obligation for a predecessor bank’s participation in a defined benefit plan. The net periodic pension income for this plan for the three and nine months ended September 30, 2018 was $0.1 million and $0.2 million, respectively, which was comprised of a $0.2 million and a $0.5 million expected return on plan assets and net actuarial gain, partially offset by a $0.1 million and a $0.3 million interest cost on projected benefit obligation for the three and nine months ended September 30, 2018, respectively.

No minimum contribution is due for this plan for fiscal year 2018; however, WesBanco made a voluntary contribution of $0.2 million to this plan in June 2018.

WesBanco assumed FFKT’s postretirement medical benefit plan, which had a liability totaling $15.0 million at the acquisition date. The plan covers FFKT employees who were hired before January 1, 2016 and meet certain age and length of full-time service requirements. The plan was modified in August 2018, which reduced the number of eligible employees. The modification resulted in a $5.5 million unrealized gain, which was recorded in Accumulated Other Comprehensive Income net of tax and will be recognized over the life of the plan participants estimated to be approximately 17 years. The modification reduced the plan liability to $9.5 million as of September 30, 2018.

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NOTE 8. 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:

Investment securities: The fair value of investment securities 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. 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.

Derivatives: WesBanco enters into interest rate swap agreements with qualifying commercial customers to meet their financing, interest rate and other risk management needs. These agreements provide the customer the ability to convert from variable to fixed interest rates. The credit risk associated with derivatives executed with customers is essentially the same as that involved in extending loans and is subject to normal credit policies and monitoring. Those interest rate swaps are economically hedged by offsetting interest rate swaps that WesBanco executes with derivative counterparties in order to offset its exposure on the fixed components of the customer interest rate swap agreements. The interest rate swap agreement with the loan customer and with the counterparty is reported at fair value in other assets and other liabilities on the consolidated balance sheet with any resulting gain or loss recorded in current period earnings as other income and other expense.

WesBanco enters into forward TBA contracts to manage the interest rate risk between the loan commitments to the customer and the closing of the loan for loans that will be sold on a mandatory basis to secondary market investors. The forward TBA contract is reported at fair value in other assets and other liabilities on the consolidated balance sheet with any resulting gain or loss recorded in current period’s earnings as mortgage banking income.

WesBanco determines the fair value for derivatives using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects contractual terms of the derivative, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. WesBanco incorporates credit valuation adjustments to appropriately reflect both its own non-performance risk and the respective counterparty’s non-performance risk in the fair value measurements.

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

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 fair value as WesBanco has elected the fair value option as of October 1, 2017. 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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Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in the table below are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. 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 September 30, 2018 and December 31, 2017:

			September 30, 2018
			Fair Value Measurements Using:
(unaudited, in thousands)	September 30, 2018		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)		Investments Measured at Net Asset Value
Recurring fair value measurements
Equity securities	$	12,784	$	12,784	$	—	$	—	$	—
Debt securities—available-for-sale
U.S. Treasury		9,937		—		9,937		—		—
U.S. Government sponsored entities and agencies		149,949		—		149,949		—		—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,449,754		—		1,449,754		—		—
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		168,761		—		168,761		—		—
Obligations of state and political subdivisions		186,651		—		185,125		1,526		—
Corporate debt securities		43,180		—		43,180		—		—
Total debt securities—available-for-sale	$	2,008,232	$	—	$	2,006,706	$	1,526	$	—
Loans held for sale		55,913		—		55,913		—		—
Other assets—interest rate derivatives agreements		6,451		—		6,451		—		—
Total assets recurring fair value measurements	$	2,083,380	$	12,784	$	2,069,070	$	1,526	$	—
Other liabilities—interest rate derivatives agreements	$	6,527	$	—	$	6,527	$	—	$	—
Total liabilities recurring fair value measurements	$	6,527	$	—	$	6,527	$	—	$	—
Nonrecurring fair value measurements
Impaired loans	$	—	$	—	$	—	$	—	$	—
Other real estate owned and repossessed assets		6,877		—		—		6,877		—
Total nonrecurring fair value measurements	$	6,877	$	—	$	—	$	6,877	$	—

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			December 31, 2017
			Fair Value Measurements Using:
(unaudited, in thousands)	December 31, 2017		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)		Investments Measured at Net Asset Value
Recurring fair value measurements
Equity securities	$	13,457	$	11,391	$	—	$	—	$	2,066
Debt securities—available-for-sale
U.S. Government sponsored entities and agencies		71,843		—		71,843		—		—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		934,922		—		934,922		—		—
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		114,867		—		114,867		—		—
Obligations of state and political subdivisions		104,830		—		104,830		—		—
Corporate debt securities		35,403		—		35,403		—		—
Total debt securities—available-for-sale	$	1,261,865	$	—	$	1,261,865	$	—	$	—
Loans held for sale		20,320		—		20,320		—		—
Other assets—interest rate derivatives agreements		7,351		—		7,351		—		—
Total assets recurring fair value measurements	$	1,302,993	$	11,391	$	1,289,536	$	—	$	2,066
Other liabilities—interest rate derivatives agreements	$	7,345	$	—	$	7,345	$	—	$	—
Total liabilities recurring fair value measurements	$	7,345	$	—	$	7,345	$	—	$	—
Nonrecurring fair value measurements
Impaired loans	$	1,717	$	—	$	—	$	1,717	$	—
Other real estate owned and repossessed assets		5,297		—		—		5,297		—
Total nonrecurring fair value measurements	$	7,014	$	—	$	—	$	7,014	$	—

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 significant transfers between level 1, 2 or 3 for the three and nine months ended September 30, 2018 or for the year ended December 31, 2017.

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)
September 30, 2018
Impaired loans	$	—		Appraisal of collateral	(1)		Appraisal adjustments	(2)		—
							Liquidation expenses	(2)		—
Other real estate owned and repossessed assets		6,877		Appraisal of collateral	(1), (3)
December 31, 2017:
Impaired loans	$	1,717		Appraisal of collateral	(1)		Appraisal adjustments	(2)		(4.8%) / (4.8	%)
							Liquidation expenses	(2)		(7.6%) / (7.6	%)
Other real estate owned and repossessed assets		5,297		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
					September 30, 2018
(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)		Investments Measured at Net Asset Value
Financial Assets
Cash and due from banks	$	273,680	$	273,680	$	273,680	$	—	$	—	$	—
Equity securities		12,784		12,784		12,784		—		—		—
Debt securities available-for-sale		2,008,232		2,008,232		—		2,006,706		1,526		—
Debt securities held-to-maturity		1,025,538		1,014,361		—		1,013,788		573		—
Net loans		7,677,521		7,517,958		—		—		7,517,958		—
Loans held for sale		55,913		55,913		—		55,913		—		—
Other assets—interest rate derivatives		6,451		6,451		—		6,451		—		—
Accrued interest receivable		39,465		39,465		39,465		—		—		—
Financial Liabilities
Deposits		8,941,758		8,960,221		7,428,158		1,532,063		—		—
Federal Home Loan Bank borrowings		1,131,253		1,123,441		—		1,123,441		—		—
Other borrowings		294,281		294,285		292,290		1,995		—		—
Subordinated debt and junior subordinated debt		189,745		179,497		—		179,497		—		—
Other liabilities—interest rate derivatives		6,527		6,527		—		6,527		—		—
Accrued interest payable		6,623		6,623		6,623		—		—		—
					Fair Value Measurements at
					December 31, 2017
(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)		Investments Measured at Net Asset Value
Financial Assets
Cash and due from banks	$	117,572	$	117,572	$	117,572	$	—	$	—	$	—
Equity securities		13,457		13,457		11,391		—		—		2,066
Debt securities available-for-sale		1,261,865		1,261,865		—		1,261,865		—		—
Debt securities held-to-maturity		1,009,500		1,023,784		—		1,023,191		593		—
Net loans		6,296,157		6,212,823		—		—		6,212,823		—
Loans held for sale		20,320		20,320		—		20,320		—		—
Other assets—interest rate derivatives		7,351		7,351		—		7,351		—		—
Accrued interest receivable		29,728		29,728		29,728		—		—		—
Financial Liabilities
Deposits		7,043,588		7,053,536		5,766,531		1,287,005		—		—
Federal Home Loan Bank borrowings		948,203		944,706		—		944,706		—		—
Other borrowings		184,805		184,814		182,785		2,029		—		—
Subordinated debt and junior subordinated debt		164,327		146,484		—		146,484		—		—
Other liabilities—interest rate derivatives		7,345		7,345		—		7,345		—		—
Accrued interest payable		3,178		3,178		3,178		—		—		—

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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.

Debt securities held-to-maturity: Fair values for debt securities held-to-maturity are determined in the same manner as the investment securities, which are 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. WesBanco believes the discount rates are consistent with transactions occurring in the marketplace for both performing and distressed loan types. The carrying value 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.

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.

Subordinated debt and junior subordinated debt: The fair value of subordinated debt is estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements. Due to the pooled nature of junior subordinated debt owed to unconsolidated subsidiary trusts, 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 9. REVENUE RECOGNITION

WesBanco adopted ASU 2014-09 as of January 1, 2018 under the modified retrospective approach and there was no material impact on WesBanco’s Consolidated Financial statements. Interest income, net securities (losses) gains and bank-owned life insurance are not in scope of ASC 606. For the revenue streams in scope of ASC 606, including trust fees, service charges on deposits, electronic banking fees, allotment fees, net securities brokerage revenue, mortgage banking income and net gain or loss on sale of other real estate owned, there are no significant judgements related to the amount and timing of revenue recognition.

Trust fees: Fees are earned over a period of time between monthly and annually, per the related fee schedule. The fees are earned ratably over the period for investment, safekeeping and other services performed by WesBanco. The fees are accrued when earned based on the daily asset value on the last day of the quarter. In most cases, the fees are directly debited from the customer account.

Service charges on deposits: There are monthly service charges for both commercial and personal banking customers, which are earned over the month per the related fee schedule based on the customers’ deposits. There are also transaction-based fees, which are earned based on specific transactions or customer activity within the customers’ deposit accounts. These are earned at the time the transaction or customer activity occurs. The fees are debited from the customer account.

Allotment fees: Allotment fees are processing fees earned from the bill payment and electronic funds transfer (“EFT”) services provided under the name FirstNet. The fees are derived from both the individual consumer banking transactions and from businesses or service providers through monthly billing for total transactions occurring. These fees are earned at the time the transaction or customer activity occurs. The fees are debited from the customers’ and the business’s deposit accounts.

Electronic banking fees: Interchange and ATM fees are earned based on customer and ATM transactions. Revenue is recognized when the transaction is settled.

Net securities brokerage revenue: Commission income is earned based on customer transactions and management of investments. The commission income from customers’ transactions is recognized when the transaction is complete. The commission income from the management of investments is earned continuously over a quarterly period.

Mortgage banking income: Income is earned when WesBanco-originated loans are sold to an investor on the secondary market. The investor bids on the loans. If the price is accepted, WesBanco delivers the loan documents to the investor. Once received and approved by the investor, revenue is recognized and the loans are derecognized from the Consolidated Balance Sheet. Prior to the loans being sold, they are classified as loans held for sale. Additionally, the changes in the fair value of the loans held for sale, loan commitments and related derivatives are included in mortgage banking income.

Net gain or loss on sale of other real estate owned: Net gain or loss is recorded when other real estate is sold to a third party and the Bank collects substantially all of the consideration to which WesBanco is entitled in exchange for the transfer of the property.

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The following table summarizes the point of revenue recognition and the income recognized for each of the revenue streams for the three and nine months ended September 30, 2018:

(unaudited, in thousands)	Point of Revenue Recognition	For the Three Months Ended September 30, 2018		For the Nine Months Ended September 30, 2018
Revenue Streams
Trust fees
Trust account fees	Over time	$	4,006	$	11,856
WesMark fees	Over time		2,259		6,664
Total trust fees			6,265		18,520
Service charges on deposits
Commercial banking fees	Over time		563		1,406
Personal service charges	At a point in time & over time		5,750		14,876
Total service charges on deposits			6,313		16,282
Net securities brokerage revenue
Annuity commissions	At a point in time		1,326		3,836
Equity and debt security trades	At a point in time		116		304
Managed money	Over time		173		477
Trail commissions	Over time		221		698
Total net securities brokerage revenue			1,836		5,315
Allotment fees (1)	At a point in time & over time		311		311
Electronic banking fees	At a point in time		6,139		16,697
Mortgage banking income	At a point in time		1,521		4,297
Net gain or loss on sale of other real estate owned	At a point in time		150		641

(1) Allotment fees are included in other non-interest income.

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NOTE 10. COMPREHENSIVE INCOME/(LOSS)

The activity in accumulated other comprehensive income for the nine months ended September 30, 2018 and 2017 is as follows:

	Accumulated Other Comprehensive Income/(Loss) (1)
(unaudited, in thousands)	Defined Benefit Plans			Unrealized Gains (Losses) on Debt  Securities Available-for-Sale			Unrealized Gains on Debt Securities Transferred from Available-for-Sale to Held-to-Maturity			Total
Balance at December 31, 2017	$	(18,626	)	$	(13,250	)	$	381		$	(31,495	)
Other comprehensive income before reclassifications		—			(33,013	)		—			(33,013	)
Acquired FFKT Medical benefit plan		4,235			—			—			4,235
Amounts reclassified from accumulated other comprehensive income		1,621			(9	)		(149	)		1,463
Period change		5,856			(33,022	)		(149	)		(27,315	)
Adoption of Accounting Standard ASU 2016-01 (2)		—			(1,063	)		—			(1,063	)
Balance at September 30, 2018	$	(12,770	)	$	(47,335	)	$	232		$	(59,873	)
Balance at December 31, 2016	$	(17,758	)	$	(9,890	)	$	522		$	(27,126	)
Other comprehensive income before reclassifications		—			4,740			—			4,740
Amounts reclassified from accumulated other comprehensive income		1,679			35			(165	)		1,549
Period change		1,679			4,775			(165	)		6,289
Balance at September 30, 2017	$	(16,079	)	$	(5,115	)	$	357		$	(20,837	)

⁽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 23% in 2018 and 37% in all prior periods.

⁽²⁾  See Note 1, Summary of Significant Accounting Policies for additional information about WesBanco’s adoption of ASU 2016-01.

The following table provides details about amounts reclassified from accumulated other comprehensive income for the three and nine months ended September 30, 2018 and 2017, respectively:

Details about Accumulated Other Comprehensive Income Components (unaudited, in thousands)	For the Three Months Ended September 30,						For the Nine Months Ended September 30,						Affected Line Item in the Statement of Net Income
	2018			2017			2018			2017
Securities available-for-sale (1):
Net securities gains/losses reclassified into earnings	$	(11	)	$	—		$	(11	)	$	55		Net securities gains (Non-interest income)
Related income tax benefit		2			—			2			(20	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(9	)		—			(9	)		35
Securities held-to-maturity (1):
Amortization of unrealized gain transferred from available-for-sale		(64	)		(66	)		(195	)		(256	)	Interest and dividends on securities (Interest and dividend income)
Related income tax expense		15			24			46			91		Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(49	)		(42	)		(149	)		(165	)
Defined benefit plans (2):
Amortization of net loss and prior service costs		772			816			2,293			2,429		Employee benefits (Non-interest expense)
Related income tax benefit		(177	)		(303	)		(672	)		(750	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		595			513			1,621			1,679
Total reclassifications for the period	$	537		$	471		$	1,463		$	1,549

⁽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 7, “Pension and Other Post Retirement Benefits” for additional detail.

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NOTE 11. 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 $0.7 million and $0.6 million as of September 30, 2018 and December 31, 2017, 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 both September 30, 2018 and December 31, 2017.

Contingent obligations and other guarantees include affordable housing plan guarantees, credit card guarantees and obligations under the FHLB’s loan purchasing program. 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 mortgages sold to FHLB obligate WesBanco to reimburse the FHLB for a portion of any loan balances that default.

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

(unaudited, in thousands)	September 30, 2018		December 31, 2017
Lines of credit	$	1,855,388	$	1,452,697
Loans approved but not closed		349,173		245,644
Overdraft limits		154,221		126,671
Letters of credit		41,515		31,951
Contingent obligations and other guarantees		5,725		6,700

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 12. 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 $4.7 billion and $3.9 billion at September 30, 2018 and 2017, 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 September 30, 2018:
Interest income	$	108,393	$	—	$	108,393
Interest expense		18,460		—		18,460
Net interest income		89,933		—		89,933
Provision for credit losses		1,035		—		1,035
Net interest income after provision for credit losses		88,898		—		88,898
Non-interest income		19,959		6,265		26,224
Non-interest expense		72,378		3,742		76,120
Income before provision for income taxes		36,479		2,523		39,002
Provision for income taxes		5,986		530		6,516
Net income	$	30,493	$	1,993	$	32,486
For the Three Months ended September 30, 2017:
Interest income	$	85,489	$	—	$	85,489
Interest expense		11,235		—		11,235
Net interest income		74,254		—		74,254
Provision for credit losses		2,516		—		2,516
Net interest income after provision for credit losses		71,738		—		71,738
Non-interest income		15,541		5,358		20,899
Non-interest expense		52,355		3,399		55,754
Income before provision for income taxes		34,924		1,959		36,883
Provision for income taxes		9,744		783		10,527
Net income	$	25,180	$	1,176	$	26,356
For the Nine Months ended September 30, 2018:
Interest income	$	293,596	$	—	$	293,596
Interest expense		48,127		—		48,127
Net interest income		245,469		—		245,469
Provision for credit losses		4,911		—		4,911
Net interest income after provision for credit losses		240,558		—		240,558
Non-interest income		55,195		18,520		73,715
Non-interest expense		183,298		10,936		194,234
Income before provision for income taxes		112,455		7,584		120,039
Provision for income taxes		19,262		1,593		20,855
Net income	$	93,193	$	5,991	$	99,184
For the Nine Months ended September 30, 2017:
Interest income	$	247,573	$	—	$	247,573
Interest expense		30,461		—		30,461
Net interest income		217,112		—		217,112
Provision for credit losses		7,610		—		7,610
Net interest income after provision for credit losses		209,502		—		209,502
Non-interest income		48,833		17,073		65,906
Non-interest expense		156,102		9,921		166,023
Income before provision for income taxes		102,233		7,152		109,385
Provision for income taxes		27,940		2,861		30,801
Net income	$	74,293	$	4,291	$	78,584

Total non-fiduciary assets of the trust and investment services segment were $5.1 million and $1.7 million at September 30, 2018 and 2017, 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 and nine months ended September 30, 2018. 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, 2017 and documents subsequently filed by WesBanco with the Securities and Exchange Commission (“SEC”), including WesBanco’s Form 10-Q for the quarters ended March 31 and June 30, 2018, 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 FFKT 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 FFKT may not be fully realized within the expected timeframes; disruption from the merger of WesBanco and FFKT 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 FDIC, the SEC, FINRA, 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 209 branches and 202 ATM machines in West Virginia, Ohio, western Pennsylvania, Kentucky, and southern Indiana, 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 April 5, 2018, WesBanco completed its acquisition of FTSB, a bank holding company headquartered in Huntington, WV with approximately $705.6 million in assets, excluding goodwill, $590.1 million in deposits and $448.1 million in loans. FTSB’s results were included in WesBanco’s results from the date of the merger consummation.

On August 20, 2018, WesBanco completed its acquisition of FFKT, a bank holding company headquartered in Frankfort, KY with approximately $1,633.7 million in assets, excluding goodwill, $1,330.3 million in deposits and $1,028.1 million in loans. FFKT’s results were included in WesBanco’s results from the date of the merger consummation.

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 September 30, 2018 have remained unchanged from the disclosures presented in WesBanco’s Annual Report on Form 10-K for the year ended December 31, 2017 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 September 30, 2018 was $32.4 million, with diluted earnings per share of $0.64, compared to $26.4 million and $0.60 per diluted share, respectively, for the third quarter of 2017. For the nine months ended September 30, 2018, net income was $99.2 million, or $2.11 per diluted share, compared to $78.6 million, or $1.78 per diluted share, for the 2017 period. Net Income excluding after-tax merger-related expenses for the three months ended September 30, 2018, increased 55.6% to $41.0 million, or $0.81 per diluted share as compared to $0.60 per diluted share for the three months ended September 30, 2017 (non-GAAP measures). On the same basis, net income for the nine months ended September 30, 2018 increased 42.2% to $112.2 million, or $2.38 per diluted share versus $1.79 per diluted share for the nine months ended September 30, 2017 (non-GAAP measures).

	For the Three Months Ended September 30,										For the Nine Months Ended September 30,
	2018						2017				2018						2017
(unaudited, dollars in thousands, except per share amounts)	Net Income			Diluted Earnings Per Share			Net Income		Diluted Earnings Per Share		Net Income			Diluted Earnings Per Share			Net Income			Diluted Earnings Per Share
Net income (Non-GAAP)(1)	$	41,027		$	0.81		$	26,356	$	0.60	$	112,194		$	2.38		$	78,903		$	1.79
Less: After tax merger-related expenses		(8,541	)		(0.17	)		—		—		(13,010	)		(0.27	)		(319	)		(0.01	)
Net income (GAAP)	$	32,486		$	0.64		$	26,356	$	0.60	$	99,184		$	2.11		$	78,584		$	1.78

⁽¹⁾ Non-GAAP net income excludes after-tax merger-related expenses. 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 $15.7 million or 21.1% during the third quarter of 2018 as compared to the same quarter of 2017 due to an 18.1% increase in average total earning assets, primarily driven by the acquisitions of FTSB and FFKT as well as the related accretion from purchase accounting. For the nine months ended September 30, 2018, net interest income increased $28.4 million or 13.1% due to higher average total earning assets from a larger investment portfolio and the earning assets acquired from FTSB and FFKT. Accretion from acquisitions benefited the third quarter of 2018 net interest margin by approximately 11 basis points, as compared to 12 basis points for the same quarter of 2017.

The provision for credit losses decreased to $1.0 million in the third quarter of 2018, compared to $2.5 million in the third quarter of 2017, due to continued strength in the credit quality of the loan portfolio. Annualized net loan charge-offs (recoveries), as a percentage of average portfolio loans, decreased from 0.12% as of September 30, 2017 to net recoveries of (0.02)% as of September 30, 2018.

For the third quarter of 2018, non-interest income increased $5.3 million or 25.5% compared to the third quarter of 2017 due to the acquisitions of FTSB on April 5, 2018 and FFKT on August 20, 2018. The increase is driven by a $1.3 million increase in electronic banking fees, a $1.0 million increase in services charges on deposits, a $0.9 million increase in trust fees and a $1.0 million increase in other income compared to the third quarter of 2017. For the nine months ended September 30, 2018, non-interest income increased $7.8 million or 11.8% compared to the nine months ended September 30, 2017, again driven by the acquisitions of FTSB and FFKT.

Non-interest expense in the third quarter of 2018 increased by $20.4 million or 36.5% compared to the same quarter in 2017 primarily due to the FTSB and FFKT acquisitions. For the third quarter, restructuring and merger-related expenses increased $10.8 million and salaries and wages increased $5.4 million, coupled with increases in various other expense categories. For the nine months ended September 30, 2018, restructuring and merger-related expenses increased $16.0 million and salaries and wages increased $10.6 million, which were partially offset by a $0.9 million decrease in employee benefits. Excluding merger-related expenses, non-interest expense increased $9.6 million or 17.1% for the three months ended September 30, 2018 as compared to the same period in 2017 and increased $12.2 million or 7.4% for the nine months ended September 30, 2018 as compared to the same period in 2017.

The effective income tax rate and associated provision for income taxes for the third quarter of 2018 are reflective of the recently enacted “Tax Cuts and Jobs Act”, which lowered the statutory Federal income tax rate for corporations to 21%. During the third quarter, the effective tax rate was 16.71% as compared to 28.54% last year, while the provision for income taxes decreased $4.0 million to $6.5 million, despite higher year-over-year pre-tax income.

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NET INTEREST INCOME

TABLE 1. NET INTEREST INCOME

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(unaudited, dollars in thousands)	2018			2017			2018			2017
Net interest income	$	89,933		$	74,254		$	245,469		$	217,112
Taxable equivalent adjustments to net interest income		1,415			2,618			4,045			7,871
Net interest income, fully taxable equivalent	$	91,348		$	76,872		$	249,514		$	224,983
Net interest spread, non-taxable equivalent		3.21	%		3.20	%		3.16	%		3.18	%
Benefit of net non-interest bearing liabilities		0.24	%		0.16	%		0.22	%		0.15	%
Net interest margin		3.45	%		3.36	%		3.38	%		3.33	%
Taxable equivalent adjustment		0.05	%		0.12	%		0.06	%		0.12	%
Net interest margin, fully taxable equivalent		3.50	%		3.48	%		3.44	%		3.45	%

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 of, 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 $15.7 million or 21.1% in the third quarter of 2018 compared to 2017, due to an 18.1% increase in average earning asset balances, primarily driven by the acquisitions of FTSB and FFKT and related accretion from purchase accounting. For the first nine months of 2018, net interest income increased $28.4 million or 13.1% over the same 2017 period for the same reasons along with higher securities balances. Average loan balances increased by 13.0% in the third quarter of 2018 from the acquisitions of FTSB and FFKT compared to the third quarter of 2017, as organic loan growth was slightly down from continued targeted reductions in the consumer portfolio to reduce its risk profile, elevated levels of commercial real estate loans moving to an aggressive secondary financing market and continued deleveraging by commercial customers reflective of the current operating environment. Total average deposits increased in the third quarter of 2018 by $1.2 billion or 16.7% compared to the third quarter of 2017, while certificates of deposit, which have the highest overall interest cost among deposits, increased by only $72.1 million or 5.3% over the same time period. The effect of multiple increases in the Federal Reserve’s target federal funds rate over the past year and higher margins on the acquired FFKT and FTSB assets on the net interest margin were mitigated by lower tax equivalent yields on tax-exempt securities resulting from the decrease in the corporate tax rate to 21% for 2018. Due to this adjustment in tax-equivalency, the net interest margin increased by only 2 basis points to 3.50% for the third quarter of 2018 compared to 3.48% in the third quarter of 2017. Yields increased for all earning asset categories in 2018 except for tax-exempt securities. The cost of interest bearing liabilities increased by 28 basis points from the third quarter of 2017 to the third quarter of 2018. The increase in the cost is primarily due to rate increases for larger balance customers in interest bearing demand deposits, which include public funds, and higher rates for certain medium-term Federal Home Loan Bank borrowings. Approximately 11 basis points of accretion from the FFKT, FTSB and other prior acquisitions was included in the 2018 third quarter net interest margin compared to 12 basis points in the 2017 third quarter net interest margin.

Interest income increased $22.9 million or 26.8% in the third quarter of 2018 and $46.0 million or 18.6% in the first nine months of 2018 compared to the same periods of 2017 due to higher overall earning assets, particularly from the FFKT and FTSB acquisitions, and higher yields in almost every earning asset category. Earning asset yields were influenced positively in the third quarter of 2018 compared to the third quarter of 2017 due to four federal funds rate increases occurring during the past twelve months. Average loan balances increased by $831.0 million or 13.0% in the third quarter of 2018 compared to the same period of 2017, due to the acquisitions of FFKT and FTSB. Loan yields increased by 39 basis points during this same period to 4.75% from the previously mentioned federal funds rate increases. Loans provide the greatest impact on interest income and the yield on earning assets as they have the largest balance and the highest yield within major earning asset categories. In the third quarter of 2018, average loans represented 69.7% of average earning assets, a decrease from 72.9% in the third quarter of 2017, primarily due to purchases of taxable securities in 2018 exceeding average loan growth. Average taxable securities balances increased by $599.4 million or 37.6% from the third quarter of 2017, consistent with management’s strategy of growing total assets above $10 billion, which occurred during the first quarter of 2018 to improve profitability. Total securities yields decreased by 6 basis points in the third quarter of 2018 from the third quarter of 2017 due to the lower tax-equivalency benefit on tax-exempt securities, resulting from the “Tax Cuts and Jobs Act”, which decreased the corporate tax rate from 35% to 21%. This lower benefit was offset somewhat by higher market rates on all securities acquired and purchased in 2018. Tax-exempt securities yields decreased 72 basis points in the third quarter of 2018 from the third quarter of 2017 from the lower tax-equivalency benefit; however, this yield decrease only affected the net interest margin and not net interest income, as the tax effect is included in the provision for income taxes. The average balance of tax-exempt securities, which have the highest yields within securities, also decreased to 26.4% of total average securities in 2018 compared to 31.1% in the third quarter of 2017. Taxable securities yields increased by 30 basis points in the third quarter of 2018 as compared to the third quarter of 2017 due to the previously mentioned purchases at higher current rates.

Total portfolio loans increased $1.4 billion or 21.2% over the last twelve months, while total commercial loans increased $1.1 billion or 25.6%. Loan growth was achieved through $2.1 billion in total loan originations, led by $1.3 billion in business loan originations for the past twelve months. Loan growth was driven by the acquisitions of FTSB and FFKT, expanded market areas and additional commercial personnel in our core markets, partially offset by significant loan paydowns or payoffs as some loans moved into the secondary lending market by customers who refinanced their mortgages, and targeted reductions of the consumer portfolio to reduce the risk profile of the loan portfolio.

Interest expense increased $7.2 million or 64.3% in the third quarter of 2018 and $17.7 million or 58.0% year-to-date compared to the same periods of 2017, due primarily to increases in the balances of interest bearing liabilities from the acquisitions of FFKT and FTSB and increases in the rates paid on all interest bearing liability categories. The cost of interest bearing liabilities increased by 28 basis points from the third quarter of 2017 to 0.95% in the third quarter of 2018. Average interest bearing deposits increased by $789.3 million or 15.0% from the third quarter of 2017, due primarily to

37

the acquisitions of FFKT and FTSB as well as organic deposit growth, which offset a $272.6 million or 19.9% decrease in certificates of deposit, excluding those acquired from FFKT and FTSB. The rate on interest bearing deposits increased by 16 basis points from the third quarter of 2017, primarily from increases in rates on interest bearing public funds. Average non-interest bearing demand deposits increased from the third quarter of 2017 to the third quarter of 2018 by $391.5 million or 21.5% and are were 26.8% of total average deposits at September 30, 2018, compared to 25.7% at September 30, 2017, reflecting the acquisitions’ non-interest bearing demand deposits and marketing strategies. Organic average non-interest bearing demand deposits increased $109.5 million or 6.0% during this same time period. The increase in non-interest bearing deposits reflect positively in the net interest margin, as the benefit of non-interest bearing liabilities increased by 8 basis points from the third quarter of 2017 to the third quarter of 2018. Average other borrowings and subordinated debt balances increased by $100.1 million or 28.7% from the third quarter of 2017, due to the acquisitions of FFKT and FTSB, and their average rates paid increased by 57 and 63 basis points, respectively, over this same time period due to increases in LIBOR, the index upon which most of this variable-rate type of borrowing is priced. The average balance of FHLB borrowings increased by $189.8 million from the third quarter of 2017, and their average rate paid increased by 79 basis points to 2.22% over this same time period due to higher interest rates and the replacement of some maturing shorter-term borrowings with those of a medium-term length throughout 2017 and the first nine months of 2018 to improve asset sensitivity and liquidity measures.

TABLE 2. AVERAGE BALANCE SHEETS AND NET INTEREST MARGIN ANALYSIS

	For the Three Months Ended September 30,										For the Nine Months Ended September 30,
	2018					2017					2018					2017
	Average		Average			Average		Average			Average		Average			Average		Average
(unaudited, dollars in thousands)	Balance		Rate			Balance		Rate			Balance		Rate			Balance		Rate
ASSETS
Due from banks—interest bearing	$	94,337		2.29	%	$	9,841		1.26	%	$	50,686		2.28	%	$	12,199		0.80	%
Loans, net of unearned income (1)		7,227,835		4.75	%		6,396,897		4.36	%		6,787,565		4.61	%		6,347,626		4.27	%
Securities: (2)
Taxable		2,194,708		2.73	%		1,595,263		2.43	%		2,038,978		2.66	%		1,582,875		2.42	%
Tax-exempt (3)		785,699		3.43	%		721,343		4.15	%		751,403		3.42	%		722,834		4.15	%
Total securities		2,980,407		2.91	%		2,316,606		2.97	%		2,790,381		2.87	%		2,305,709		2.96	%
Other earning assets		60,783		6.26	%		48,961		4.44	%		56,182		6.02	%		47,511		4.49	%
Total earning assets (3)		10,363,362		4.21	%		8,772,305		3.99	%		9,684,814		4.11	%		8,713,045		3.92	%
Other assets		1,375,434					1,125,182					1,238,728					1,123,193
Total Assets	$	11,738,796				$	9,897,487				$	10,923,542				$	9,836,238
LIABILITIES AND SHAREHOLDERS’ EQUITY
Interest bearing demand deposits	$	1,983,340		0.70	%	$	1,635,956		0.44	%	$	1,844,423		0.67	%	$	1,602,546		0.37	%
Money market accounts		1,111,341		0.49	%		994,772		0.30	%		1,051,104		0.42	%		1,015,852		0.26	%
Savings deposits		1,511,075		0.09	%		1,257,785		0.06	%		1,389,613		0.07	%		1,246,252		0.06	%
Certificates of deposit		1,439,658		0.90	%		1,367,581		0.76	%		1,366,109		0.86	%		1,408,231		0.71	%
Total interest bearing deposits		6,045,414		0.56	%		5,256,094		0.40	%		5,651,249		0.52	%		5,272,881		0.37	%
Federal Home Loan Bank borrowings		1,194,940		2.22	%		1,005,106		1.43	%		1,138,350		2.01	%		967,356		1.33	%
Other borrowings		269,342		1.42	%		185,051		0.85	%		249,030		1.34	%		178,613		0.71	%
Subordinated debt and junior subordinated debt		180,074		5.10	%		164,236		4.47	%		172,518		4.98	%		164,112		4.44	%
Total interest bearing liabilities (1)		7,689,770		0.95	%		6,610,487		0.67	%		7,211,147		0.89	%		6,582,962		0.62	%
Non-interest bearing demand deposits		2,209,235					1,817,781					2,040,292					1,801,945
Other liabilities		120,302					75,254					127,699					74,920
Shareholders’ equity		1,719,489					1,393,965					1,544,404					1,376,411
Total Liabilities and
Shareholders’ Equity	$	11,738,796				$	9,897,487				$	10,923,542				$	9,836,238
Taxable equivalent net interest spread				3.26	%				3.32	%				3.22	%				3.30	%
Taxable equivalent net interest margin				3.50	%				3.48	%				3.44	%				3.45	%

(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 $0.9 million and $0.8 million for the three months ended September 30, 2018 and 2017, respectively, and $2.3 million and $2.4 million for the nine months ended September 30, 2018 and 2017, respectively. Additionally, loan accretion included in net interest income on loans acquired from prior acquisitions was $2.4 million for both the three months ended September 30, 2018 and 2017, and $5.9 million and $4.9 million for the nine months ended September 30, 2018 and 2017, respectively. Accretion on interest bearing liabilities from prior acquisitions was $0.6 million and $0.3 million for the three months ended September 30, 2018 and 2017, respectively, and $1.5 million and $1.1 million for the nine months ended September 30, 2018 and 2017, respectively.

(2) Average yields on available-for-sale debt securities are calculated based on amortized cost.

(3) Taxable equivalent basis is calculated on tax-exempt securities using a rate of 21% for 2018 and 35% for 2017.

38

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

	Three Months Ended September 30, 2018 Compared to September 30, 2017								Nine Months Ended September 30, 2018 Compared to September 30, 2017
(unaudited, in thousands)	Volume		Rate			Net Increase (Decrease)			Volume			Rate			Net Increase (Decrease)
Increase (decrease) in interest income:
Due from banks—interest bearing	$	449	$	42		$	491		$	489		$	286		$	775
Loans, net of unearned income		9,622		6,641			16,263			14,567			17,109			31,676
Taxable securities		3,981		1,272			5,253			8,886			3,134			12,020
Tax-exempt securities (1)		628		(1,367	)		(739	)		860			(4,087	)		(3,227	)
Other earning assets		161		272			433			333			620			953
Total interest income change (1)		14,841		6,860			21,701			25,135			17,062			42,197
Increase (decrease) in interest expense:
Interest bearing demand deposits		447		1,240			1,687			751			4,010			4,761
Money market accounts		97		512			609			71			1,291			1,362
Savings deposits		43		120			163			69			144			213
Certificates of deposit		144		522			666			(230	)		1,507			1,277
Federal Home Loan Bank borrowings		781		2,282			3,063			1,922			5,612			7,534
Other borrowings		229		342			571			478			1,065			1,543
Subordinated debt and junior
subordinated debt		189		277			466			289			687			976
Total interest expense change		1,930		5,295			7,225			3,350			14,316			17,666
Net interest income increase (decrease) (1)	$	12,911	$	1,565		$	14,476		$	21,785		$	2,746		$	24,531

(1) Taxable equivalent basis is calculated on tax-exempt securities using a tax rate of 21% for 2018 and 35% for 2017.

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. The provision for credit losses decreased to $1.0 million in the third quarter of 2018 compared to $2.5 million in the third quarter of 2017 due primarily to the current high quality of the loan portfolio and lower net charge-offs. Overall, most credit ratios continued to improve on a percentage basis, year-over-year. Non-performing loans (including TDRs), and criticized and classified loans improved as a percentage of total portfolio loans from September 30, 2017. Total non-performing loans were 0.49% of total loans at September 30, 2018, decreasing from 0.66% of total loans at the end of the third quarter of 2017. Criticized and classified loans were 1.01% of total loans, improving from 1.24% at September 30, 2017. Past due loans at September 30, 2018 were 0.26% of total loans, compared to 0.35% at September 30, 2017. Annualized net loan charge-offs also decreased from 0.12% at September 30, 2017 to net recoveries of (0.02)% at September 30, 2018. (Please see the Allowance for Credit Losses section of this MD&A for additional discussion).

39

NON-INTEREST INCOME

TABLE 4. NON-INTEREST INCOME

	For the Three Months Ended September 30,										For the Nine Months Ended September 30,
(unaudited, dollars in thousands)	2018		2017			$ Change		% Change			2018		2017		$ Change			% Change
Trust fees	$	6,265	$	5,358		$	907		16.9	%	$	18,520	$	17,073	$	1,447			8.5	%
Service charges on deposits		6,313		5,320			993		18.7	%		16,282		15,254		1,028			6.7	%
Electronic banking fees		6,139		4,883			1,256		25.7	%		16,697		14,395		2,302			16.0	%
Net securities brokerage revenue		1,836		1,721			115		6.7	%		5,315		5,164		151			2.9	%
Bank-owned life insurance		1,232		1,164			68		5.8	%		5,116		3,671		1,445			39.4	%
Mortgage banking income		1,521		1,103			418		37.9	%		4,297		3,511		786			22.4	%
Net securities gains		84		6			78		1300.0	%		403		511		(108	)		(21.1	%)
Net gain/(loss) on other real estate owned and other assets		150		(298	)		448		150.3	%		641		9		632			7022.2	%
Net insurance services revenue		806		661			145		21.9	%		2,409		2,313		96			4.2	%
Swap fee and valuation income		627		60			567		945.0	%		1,322		882		440			49.9	%
Allotment fees		311		—			311		100.0	%		311		—		311			100.0	%
Other		940		921			19		2.1	%		2,402		3,123		(721	)		(23.1	%)
Total non-interest income	$	26,224	$	20,899		$	5,325		25.5	%	$	73,715	$	65,906	$	7,809			11.8	%

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 third quarter of 2018, non-interest income increased $5.3 million or 25.5% compared to the third quarter of 2017 due to the acquisitions of FTSB on April 5, 2018 and FFKT on August 20, 2018. The increase is driven by a $1.3 million increase in electronic banking fees, a $1.0 million increase on services charges on deposits, a $0.9 million increase in trust fees and $0.6 million in swap fee and valuation income compared to the third quarter of 2017. For the nine months ended September 30, 2018, non-interest income increased $7.8 million or 11.8% compared to the nine months ended September 30, 2017.

Trust fees increased $0.9 million or 16.9% compared to the third quarter of 2017 due to the acquisition of FFKT and organic growth of non-acquired trust assets, along with higher market valuations. Total trust assets have increased $0.8 billion to $4.7 billion as of September 30, 2018 compared to $3.9 billion as of September 30, 2017. WesBanco acquired trust assets of $0.6 billion from FFKT as of August 20, 2018. For the nine months ended September 30, 2018, trust fees increased $1.4 million or 8.5% as compared to September 30, 2017. At September 30, 2018, trust assets include managed assets of $3.7 billion and non-managed (custodial) assets of $1.0 billion. Assets managed for the WesMark Funds, a proprietary group of mutual funds that is advised by WesBanco Trust and Investment Services, were $963.7 million as of September 30, 2018 and $948.3 million at September 30, 2017 and are included in trust-managed assets.

Service charges on deposits increased $1.0 million or 18.7% compared to the third quarter of 2017 due primarily to the increased customer base from the FTSB and FFKT acquisition. For the nine months ended September 30, 2018, service charges on deposits increased $1.0 million or 6.7%. Deposits increased $1.8 billion to $8.9 billion as of September 30, 2018 compared to $7.1 billion as of September 30, 2017.

Electronic banking fees, which include debit card interchange fees, increased $1.3 million or 25.7% compared to the third quarter of 2017 due to an increased customer base from the FTSB and FFKT acquisitions, a higher volume of debit card transactions from WesBanco’s legacy customers and an ATM fee increase for non-WesBanco customers. The volume increase is due to a higher percentage of customers using these products as well as marketing initiatives. Beginning July 1, 2019, WesBanco will experience a reduction of approximately 50% of debit card interchange revenue due to the applicability of the Durbin Amendment of the Dodd-Frank Act. This reduction is currently estimated to be $2.5 million per quarter.

Bank-owned life insurance income increased $0.1 million or 5.8% compared to the third quarter of 2017. For the nine months ended September 30, 2018, bank-owned life insurance increased $1.4 million or 39.4% compared to the nine months ended September 30, 2017 due to death benefits received in first quarter of 2018. The total cash surrender value of bank-owned life insurance increased $32.5 million to $224.0 million as of September 30, 2018 compared to September 30, 2017 due to the acquisitions of FTSB and FFKT.

Mortgage banking income increased $0.4 million or 37.9% compared to the third quarter of 2017 partially due to increased mortgage production in Kentucky as a result of recent acquisitions, as well as higher organic production from a higher number of employed mortgage originators. Mortgage banking income has also increased due to higher gains on sales of mortgages in the secondary market, as WesBanco is selling these loans primarily on a mandatory basis as compared to previously selling these loans on a best efforts basis. For the nine months ended September 30, 2018, mortgage banking income increased $0.8 million or 22.4% compared to the nine months ended September 30, 2017. Mortgage production was $133.4 million, which increased 26.4% from the comparable 2017 quarter. Mortgages sold into the secondary market represented $56.5 million or 42.3% of overall mortgage loan production in the third quarter of 2018 compared to $60.3 million or 57.1% in the third quarter of 2017.

Swap fee and valuation income increased $0.6 million or 945.0% compared to the third quarter of 2017. For the nine months ended September 30, 2018, swap fee and valuation income increased $0.4 million or 49.9% compared to the nine months ended September 30, 2017. The increase is due to fees earned when commercial loan customers enter into swap agreements related to the commercial loans.

40

NON-INTEREST EXPENSE

TABLE 5. NON-INTEREST EXPENSE

	Ended September 30,										Ended September 30,
(unaudited, dollars in thousands)	2018		2017		$ Change			% Change			2018		2017		$ Change			% Change
Salaries and wages	$	30,335	$	24,957	$	5,378			21.5	%	$	82,213	$	71,575	$	10,638			14.9	%
Employee benefits		7,905		7,728		177			2.3	%		22,782		23,670		(888	)		(3.8	%)
Net occupancy		4,957		4,132		825			20.0	%		13,715		12,969		746			5.8	%
Equipment		4,488		3,905		583			14.9	%		12,532		12,043		489			4.1	%
Marketing		1,446		1,599		(153	)		(9.6	%)		3,967		4,482		(515	)		(11.5	%)
FDIC insurance		789		945		(156	)		(16.5	%)		2,315		2,677		(362	)		(13.5	%)
Amortization of intangible assets		1,821		1,223		598			48.9	%		4,218		3,736		482			12.9	%
Restructuring and merger-related expenses		10,811		—		10,811			100.0	%		16,468		491		15,977			3254.0	%
Franchise and other miscellaneous taxes		2,928		2,095		833			39.8	%		7,246		6,223		1,023			16.4	%
Postage and courier expenses		1,138		935		203			21.7	%		3,083		2,925		158			5.4	%
Consulting, regulatory, accounting and advisory fees		1,664		1,755		(91	)		(5.2	%)		4,942		5,082		(140	)		(2.8	%)
Other real estate owned and foreclosure expenses		151		251		(100	)		(39.8	%)		600		906		(306	)		(33.8	%)
Legal fees		696		675		21			3.1	%		2,053		2,086		(33	)		(1.6	%)
Communications		679		602		77			12.8	%		1,733		1,982		(249	)		(12.6	%)
ATM and electronic banking interchange expenses		1,544		1,202		342			28.5	%		4,060		3,493		567			16.2	%
Supplies		828		631		197			31.2	%		2,293		2,360		(67	)		(2.8	%)
Other		3,940		3,119		821			26.3	%		10,014		9,323		691			7.4	%
Total non-interest expense	$	76,120	$	55,754	$	20,366			36.5	%	$	194,234	$	166,023	$	28,211			17.0	%

Non-interest expense in the third quarter of 2018 increased by $20.4 million or 36.5% compared to the same quarter in 2017 primarily due to the FTSB and FFKT acquisition, which closed on April 5, 2018 and August 20, 2018, respectively. Excluding merger-related expenses, non-interest expense increased $9.6 million or 17.1%. For the third quarter, restructuring and merger-related expenses increased $10.8 million and salaries and wages increased $5.4 million, coupled with increases in various other expense categories. For the nine months ended September 30, 2018, salaries and wages increased $10.6 million and restructuring and merger-related expenses increased $16.0 million, which were partially offset by a $0.9 million decrease in employee benefits, due to a reduction in pension expense, as well as decreases in various other non-interest expense categories due to cost savings initiatives from the YCB and FTSB acquisitions as well as WesBanco’s initiative to control discretionary costs.

Salaries and wages increased $5.4 million or 21.5% from the third quarter of 2017 due to increased compensation related to a 23.7% increase in full-time equivalent employees primarily related to the FTSB and FFKT acquisitions. In addition, due to the adoption of a new accounting standard (ASU 2017-07), salaries and wages included $0.7 million related to pension service expense for the third quarter of 2018, which was classified within employee benefits for the third quarter of 2017. The remaining increase is due to routine annual compensation adjustments and stock-based compensation increases. Employee benefits expense increased $0.2 million or 2.3% compared to the third quarter of 2017 due to a $0.6 million increase in health care costs and a $0.3 million increase in payroll tax expense, offset by a $0.7 million reclassification of pension service cost to salaries and wages as well as $0.3 million decrease in other pension costs compared to the third quarter of 2017. For the nine months ended September 30, 2018, salaries and wages increased 14.9% due to similar reasons in the third quarter analysis, while employee benefits decreased 3.8% as the reclassification of pension service costs exceeded increased healthcare costs and employer payroll taxes.

Net occupancy costs increased $0.8 million or 20.0% compared to the third quarter of 2017, primarily due to the five acquired FTSB branches and the 34 acquired FFKT branches. For the nine months ended September 30, 2018, net occupancy costs increased $0.7 million or 5.8% compared to the nine months ended September 30, 2017.

Amortization of intangible assets increased $0.6 million or 48.9% compared to the third quarter of 2017. The FTSB acquisition added approximately $8.1 in core deposit intangibles. The FFKT acquisition added approximately $39.7 million in core deposit intangibles and $2.9 million in trust customer relationship intangibles. For the nine months ended September 30, 2018, amortization of intangible assets increased $0.5 million or 12.9% compared to the nine months ended September 30, 2017.

Restructuring and merger-related expenses in 2018 relate to the FTSB acquisition that closed on April 5, 2018 and the FFKT acquisition that closed on August 20, 2018. The restructuring and merger-related expenses in 2017 relate to the YCB acquisition that closed on September 9, 2016. Of the $16.5 million in restructuring costs for the nine months ended September 30, 2018, $5.5 million relate to FTSB and $11.0 million relate to FFKT. The FTSB costs included $2.2 million in contract termination and conversion costs, $0.8 million for investment banking services, $0.7 million for change-in-control payments and $0.5 million in employee severance costs. The FFKT costs included $7.4 million for contract termination and conversion costs, $2.3 million for investment banking services and $0.5 million in legal costs.

Franchise and real property taxes increased $0.8 million or 39.8% compared to the third quarter of 2017. The increase is primarily driven by a $0.4 million increase in Kentucky corporate franchise tax due to the FFKT acquisition, which was headquartered in Kentucky. For the nine months ended September 30, 2018, franchise and real property taxes increased $1.0 million or 16.4% compared to the nine months ended September 30, 2017.

ATM and electronic banking interchange expenses increased $0.3 million or 28.5% from the third quarter of 2017 due to the increased customer base from the FTSB and FFKT acquisitions and a higher volume of debit card transactions from WesBanco’s legacy customers. For the nine months ended September 30, 2018, ATM and electronic banking interchange expenses increased $0.6 million or 16.2% compared to the nine months ended September 30, 2017.

41

INCOME TAXES

The provision for income taxes decreased $4.0 million or 38.1% in the third quarter of 2018 compared to the third quarter of 2017, due to the enacted Federal tax reform legislation that reduced the corporate federal income tax rate from 35% to 21% effective January 1, 2018. Partially offsetting this decrease in income tax expense, third quarter 2018 pre-tax income was 5.7% higher. As a result of these changes, the effective tax rate decreased to 16.7% compared to 28.5% in the third quarter of 2017. For the nine months ended September 30, 2018, the provision for income taxes decreased $9.9 million or 32.3%, compared to the first nine months of 2017, due in part to the decrease in the federal income tax rate, partially offset by a 9.7% increase in pre-tax income. The effective tax rate was 17.4% for the nine months ended September 30, 2018. WesBanco Bank Community Development Corporation (“WesBanco CDC”) was awarded multi-state New Markets Tax Credits (“NMTC”) from the U.S. Department of the Treasury’s Community Development Financial Institutions Fund (“CDFI Fund”) totaling $40 million of investments, which would provide a federal tax credit of $15.6 million over seven years, after the Bank makes certain Qualified Equity Investments in the WesBanco CDC.

FINANCIAL CONDITION

Total assets increased 28.4%, while deposits and shareholders’ equity increased 26.9% and 38.1%, respectively, compared to December 31, 2017, primarily due to the acquisitions of FTSB and FFKT. Total securities increased by $761.7 million or 33.3% from December 31, 2017 to September 30, 2018, and was driven by management’s strategy to exceed the $10 billion threshold in total assets during the first quarter of 2018 by purchasing taxable securities in anticipation of the scheduled closing of FTSB. These purchases had an average yield of approximately 3.06%. In addition, the FTSB and FFKT acquisitions provided $142.9 million and $239.3 million of additional securities, respectively. Total portfolio loans increased $1.4 billion or 21.8% with $448.1 million and $1.0 billion from the FTSB and FFKT acquisitions, respectively. Total organic loans decreased 0.7% resulting from continued targeted reductions in the consumer loan portfolio and pay downs of commercial loans outpacing growth. Deposits increased $1.9 billion from year-end, primarily due to the acquisitions of FTSB and FFKT. Organic deposits decreased 0.3% as increases of 6.1% and 3.1% in demand deposits and savings, respectively, were more than offset by decreases of 5.3% and 16.9% in money market deposits and certificates of deposit, respectively. The decrease in certificates of deposit is a result of periodically offering lower than median competitive rates for maturing certificates of deposit, primarily for single service customers, and customer preferences for other deposit types, coupled with a $40.4 million decrease in CDARS^® balances. The increase in demand deposits and savings 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 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 24.5% during the first nine months of 2018 as short-term borrowings increased $109.5 million, new FHLB borrowings exceeded maturities by $127.6 million, with the FTSB and FFKT acquisitions providing an additional $52.3 million and $3.0 million in FHLB borrowings, respectively, and junior subordinated debt increased $25.4 million. The FTSB and FFKT acquisitions provided $9.3 million and $33.5 million in junior subordinated debentures, respectively, which was partially offset by the redemption of $17.5 million in junior subordinated debentures during the first nine months of 2018. Proceeds from borrowings were utilized to purchase investment securities during the nine months ended September 30, 2018. Total shareholders’ equity increased by approximately $531.9 million or 38.1%, compared to December 31, 2017, primarily due to $107.3 million and $391.3 million of common stock issued in the FTSB and FFKT acquisitions, respectively, and net income exceeding dividends for the period by $57.1 million, which was partially offset by $28.4 million in additional other comprehensive loss. The other comprehensive loss resulted from a $34.2 million unrealized loss in the securities portfolio, which was partially offset by a $5.9 million unrealized gain in the defined benefit pension plan and other postretirement benefits during the period. The tangible equity to tangible assets ratio (non-GAAP measure) decreased from 8.79% at December 31, 2017 to 8.66% at September 30, 2018 as tangible assets increased at a faster pace than shareholders’ equity, primarily as a result of the FTSB and FFKT acquisitions.

42

TABLE 6. COMPOSITION OF SECURITIES (1)

(unaudited, dollars in thousands)	September 30, 2018			December 31, 2017			$ Change			% Change
Equity securities (at fair value)	$	12,784		$	13,457		$	(673	)		(5.0	)
Available-for-sale debt securities (at fair value)
U.S. Treasury		9,937			—			9,937			100.0
U.S. Government sponsored entities and agencies		149,949			71,843			78,106			108.7
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		1,449,754			934,922			514,832			55.1
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		168,761			114,867			53,894			46.9
Obligations of states and political subdivisions		186,651			104,830			81,821			78.1
Corporate debt securities		43,180			35,403			7,777			22.0
Total available-for-sale debt securities	$	2,008,232		$	1,261,865		$	746,367			59.1
Held-to-maturity debt securities (at amortized cost)
U.S. Government sponsored entities and agencies	$	11,699		$	11,465		$	234			2.0
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		154,018			170,025			(16,007	)		(9.4	)
Obligations of states and political subdivisions		826,514			794,655			31,859			4.0
Corporate debt securities		33,307			33,355			(48	)		(0.1	)
Total held-to-maturity debt securities		1,025,538			1,009,500			16,038			1.6
Total securities	$	3,046,554		$	2,284,822		$	761,732			33.3
Available-for-sale and equity securities:
Weighted average yield at the respective period end (2)		2.70	%		2.35	%
As a % of total securities		66.3	%		55.8	%
Weighted average life (in years)		4.8			4.2
Held-to-maturity securities:
Weighted average yield at the respective period end (2)		3.46	%		3.85	%
As a % of total securities		33.7	%		44.2	%
Weighted average life (in years)		5.2			4.2
Total securities:
Weighted average yield at the respective period end (2)		2.95	%		3.01	%
As a % of total securities		100.0	%		100.0	%
Weighted average life (in years)		5.1			4.2

(1) At September 30, 2018 and December 31, 2017, there were no holdings of any one issuer, other than U.S. government sponsored entities and its 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 21% in 2018 and 35% in 2017.

Total investment securities, which are a source of liquidity for WesBanco as well as a contributor to interest income, increased by $761.7 million or 33.3% from December 31, 2017 to September 30, 2018. Through the first nine months of 2018, the available-for-sale portfolio increased by $746.4 million or 59.1%, while the held-to-maturity portfolio increased by $16.0 million or 1.6%. The increase in the overall portfolio from December 31, 2017 was driven partially by the acquisitions of FTSB and FFKT, and more significantly by management’s strategy to exceed the $10 billion threshold in total assets during the first quarter of 2018 by purchasing mortgage-backed securities and collateralized mortgage obligations, with an average yield of approximately 3.06%. The weighted average yield of the portfolio decreased by 6 basis points from 3.01% at December 31, 2017 to 2.95% at September 30, 2018. Though market rates increased in the first nine months of 2018 on all securities purchased, the decrease in the corporate federal tax rate from 35% to 21% reduced the tax-equivalent yield by approximately 67 basis points on the tax-exempt municipal bond portfolio, as the tax benefit was reduced. This decrease in the tax-equivalent yield on tax-exempt municipals more than offset the general market rate increases, as tax-exempt municipals comprise approximately 33% of WesBanco’s investment portfolio. The higher-yielding 2018 purchases helped to mitigate the impact of the tax-equivalent yield reduction on the municipal bonds.

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Net unrealized losses on available-for-sale securities included in accumulated other comprehensive income, net of tax, as of September 30, 2018 and December 31, 2017 were $47.3 million and $13.3 million, respectively. With approximately 34% of the investment portfolio in the held-to- maturity category, the recent increase 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.

Equity securities, of which a portion consist of investments in various mutual funds held in grantor trusts formed in connection with a key officer and director deferred compensation plan, are recorded at fair value. Gains and losses due to fair value fluctuations on equity securities are included in net securities gains or losses. For those equity securities relating to the key officer and director deferred compensation plan, the corresponding change in the obligation to the employee is recognized in employee benefits expense.

WesBanco’s municipal portfolio comprises 33.3% of the overall securities portfolio as of September 30, 2018, which is down from 39.4% as of December 31, 2017 due to the first quarter mortgage-backed and CMO purchases. Municipal bonds carry 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

	September 30, 2018				December 31, 2017
(unaudited, dollars in thousands)	Amount		% of Total		Amount		% of Total
Municipal bonds (at fair value) (1):
Moody’s: Aaa / S&P: AAA	$	120,898		12.0	$	96,253		10.5
Moody’s: Aa1 ; Aa2 ; Aa3 / S&P: AA+ ; AA ; AA-		725,572		71.8		685,446		74.9
Moody’s: A1 ; A2 ; A3 / S&P: A+ ; A ; A-		141,221		14.0		125,032		13.7
Moody’s: Baa1 ; Baa2 ; Baa3 / S&P: BBB+ ; BBB ; BBB- (2)		5,458		0.5		745		0.1
Not rated by either agency (3)		16,707		1.7		7,764		0.8
Total municipal bond portfolio	$	1,009,856		100.0	$	915,240		100.0

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

(2) As of September 30, 2018 and December 31, 2017, there are no securities in the municipal portfolio rated below investment grade.

(3) Non-rated municipal balances increased from December 31, 2017 due to non-rated West Virginia municipal bonds in the acquired FTSB investment portfolio.

WesBanco’s municipal bond portfolio at September 30, 2018, consists of $201.2 million of taxable (primarily Build America) and $808.7 million of 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

	September 30, 2018				December 31, 2017
(unaudited, dollars in thousands)	Amount		% of Total		Amount		% of Total
Municipal bond type:
General Obligation	$	680,961		67.4	$	630,824		68.9
Revenue		328,895		32.6		284,416		31.1
Total municipal bond portfolio	$	1,009,856		100.0	$	915,240		100.0
Municipal bond issuer:
State Issued	$	97,765		9.7	$	95,160		10.4
Local Issued		912,091		90.3		820,080		89.6
Total municipal bond portfolio	$	1,009,856		100.0	$	915,240		100.0

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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 September 30, 2018:

TABLE 9. CONCENTRATION OF MUNICIPAL SECURITIES

	September 30, 2018
(unaudited, dollars in thousands)	Fair Value		% of Total
Pennsylvania	$	194,010		19.2
Texas		111,871		11.1
Ohio		106,006		10.5
Kentucky		60,025		5.9
Illinois		52,533		5.2
All other states (1)		485,141		48.1
Total municipal bond portfolio	$	1,009,586		100.0

(1) WesBanco’s municipal bond portfolio contains obligations in the state of West Virginia totaling $40.4 million or 4.0% 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 thinly traded securities or with limited observable data points. The 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 8, “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, including indirect and direct auto and truck 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 currently 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 adjusts 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 inherent loss in the event of default to understand their impact on the Bank’s earnings and capital.

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TABLE 10. COMPOSITION OF LOANS (1)

	September 30, 2018				December 31, 2017
(unaudited, dollars in thousands)	Amount		% of Loans		Amount		% of Loans
Commercial real estate:
Land and construction	$	538,922		6.9	$	392,597		6.2
Improved property		3,367,299		43.3		2,601,851		40.9
Total commercial real estate		3,906,221		50.2		2,994,448		47.1
Commercial and industrial		1,292,073		16.6		1,125,327		17.7
Residential real estate		1,598,477		20.5		1,353,301		21.3
Home equity		604,106		7.8		529,196		8.3
Consumer		325,546		4.2		339,169		5.3
Total portfolio loans		7,726,423		99.3		6,341,441		99.7
Loans held for sale		55,913		0.7		20,320		0.3
Total loans	$	7,782,336		100.0	$	6,361,761		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 $1.42 billion from December 31, 2017 with $1.03 billion from the FFKT acquisition and $448.1 million from the FTSB acquisition while organic portfolio loans decreased $43.1 million or 0.68%. Approximately $12.9 million in underperforming commercial loans from FTSB were sold during the second quarter. During the third quarter of 2018, approximately $107 million of acquired loans were reclassified from the commercial and industrial category to the commercial real estate category due to the classification of the underlying collateral. CRE land and construction provided the most significant organic growth, increasing 3.7% for the year-to-date period. Total organic loan growth over the last twelve months was driven by 10.2% growth in CRE improved property and 2.03% growth in residential real estate. Secondary market loan sales of residential mortgages decreased; however, higher premiums resulted in an increase in the gain on sale of mortgages. In addition, the consumer portfolio declined due to targeted reductions to reduce its overall credit risk, which included certain pricing adjustments for indirect installment loans.

Total loan commitments of $2.4 billion, including loans approved but not closed, increased $542.4 million or 29.1% from December 31, 2017 due primarily to unused lines of credit from the two acquisitions as well as organic commitments. The line utilization percentage for the commercial portfolio was slightly lower at 46.1% as of September 30, 2018 and it was 48.0% as of December 31, 2017.

The commercial portfolio is monitored for potential concentrations of credit risk by market, type of lending, CRE property type, C&I and owner-occupied CRE by industry, investment CRE dependence on common tenants and industries or property types that are similarly impacted by external factors.

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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)	September 30, 2018			December 31, 2017
Non-accrual loans:
Commercial real estate—land and construction	$	—		$	239
Commercial real estate—improved property		8,757			13,318
Commercial and industrial		3,165			2,958
Residential real estate		14,475			14,661
Home equity		4,283			4,762
Consumer		594			887
Total non-accrual loans (1)		31,274			36,825
TDRs accruing interest:
Commercial real estate—land and construction		—			—
Commercial real estate—improved property		1,171			1,650
Commercial and industrial		162			128
Residential real estate		4,469			4,321
Home equity		445			407
Consumer		91			65
Total TDRs accruing interest (1)		6,338			6,571
Total non-performing loans	$	37,612		$	43,396
Other real estate owned and repossessed assets		6,877			5,297
Total non-performing assets	$	44,489		$	48,693
Non-performing loans/total portfolio loans		0.49	%		0.68	%
Non-performing assets/total assets		0.35	%		0.50	%
Non-performing assets/total portfolio loans, other real estate and repossessed assets		0.58	%		0.77	%

(1) TDRs on nonaccrual of $2.0 million and $2.9 million at September 30, 2018 and December 31, 2017, respectively, are included in total nonaccrual loans.

Non-performing loans, which consist of non-accrual loans and TDRs, decreased $5.8 million or 13.3%, from December 31, 2017, despite a $0.4 million and $2.1 million increase from FTSB and FFKT, respectively, as cash flows could not be reasonably estimated for a small population of FTSB and FFKT loans acquired with deteriorated credit quality and therefore were accounted for under the cost recovery method. Certain other such loans from FTSB identified in due diligence as underperforming were sold after the acquisition was completed in the second quarter. Non-accrual loans decreased primarily due to the paydown of one large CRE loan in the first quarter. TDRs decreased slightly by $0.2 million due to normal repayments being slightly higher than additions to the category. (Please see the Note 5, “Loans and the Allowance for Credit Losses”.)

Other real estate owned and repossessed assets increased $1.6 million from December 31, 2017 primarily due to FTSB and FFKT acquisitions adding $0.5 million and $2.7 million, respectively, to the September 30, 2018 other real estate and repossessed asset totals.

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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

(unaudited, dollars in thousands)	September 30, 2018			December 31, 2017
Loans past due 90 days or more:
Commercial real estate—land and construction	$	—		$	—
Commercial real estate—improved property		88			243
Commercial and industrial		114			20
Residential real estate		1,225			1,113
Home equity		646			742
Consumer		378			608
Total loans past due 90 days or more		2,451			2,726
Loans past due 30 to 89 days:
Commercial real estate—land and construction		741			172
Commercial real estate—improved property		1,714			316
Commercial and industrial		1,166			721
Residential real estate		8,058			4,392
Home equity		3,446			2,281
Consumer		2,891			3,290
Total loans past due 30 to 89 days		18,016			11,172
Total 30 days or more	$	20,467		$	13,898
Loans past due 90 days or more and accruing to total portfolio loans		0.03	%		0.04	%
Loans past due 30-89 days and accruing to total portfolio loans		0.23	%		0.18	%

Loans past due 30 days or more and accruing interest, excluding non-accruals and TDRs, increased $6.6 million or 47.3% from December 31, 2017, primarily due to the FTSB and FFKT acquisitions which added $4.8 million and $2.0 million, respectively. These loans continue to accrue interest because they are both well-secured and in the process of collection. The increase in the 30 to 89 days past due status was primarily due to a $3.7 million increase in the residential real estate category and represented 0.23% of total portfolio loans at September 30, 2018 and 0.18% at December 31, 2017. Loans past due 90 days or more decreased $0.3 million compared to December 31, 2017 and represented 0.03% of total loans at September 30, 2018, compared to 0.04% at December 31, 2017. These continued low levels of delinquency are the result of management’s continued focus on sound initial underwriting, timely collection of loans at their earliest stage of delinquency, stable unemployment and generally improved economic conditions.

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ALLOWANCE FOR CREDIT LOSSES

The allowance for loan losses of $48.9 million represented 0.63% of total portfolio loans at September 30, 2018 compared to 0.71% as of December 31, 2017 and September 30, 2017. Included in the ratio are acquired FTSB and FFKT loans (recorded at fair value at the date of acquisition of $448.1 million and $1,028.1 million, respectively). No allowance has been recorded on FTSB and FFKT acquired loans as of September 30, 2018.

The allowance for loans individually-evaluated decreased from December 31, 2017 to September 30, 2018 primarily due to a partial charge-off on one individually-evaluated commercial credit of $0.4 million. The allowance for loans collectively-evaluated increased from December 31, 2017 to September 30, 2018 by $4.0 million.

The allowance for loan commitments of $0.7 million at September 30, 2018 as compared to $0.6 million at December 31, 2017, and is included in other liabilities on the Consolidated Balance Sheets.

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 and delinquencies. 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 loan categories, 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 at September 30, 2018 were 1.01% of total portfolio loans, improving from 1.24% at September 30, 2017. Criticized and classified loans as a percent of total loans decreased, as overall credit quality continued to improve, enabling certain loans to be upgraded while others have paid down or paid off. Criticized and classified loans increased $3.9 million from December 31, 2017 to $77.8 million at September 30, 2018 due to $7.5 million in acquired FFKT criticized and classified loans offset somewhat by the paydown and/or upgrade of several large CRE loans.

Table 13 summarizes the allocation of the allowance for credit losses to each category of the loan portfolio. The increase in the allowance for commercial loans from December 31, 2017 is primarily due to certain judgmental factors leading to a longer look-back period and interest rate variables, while the overall allowance for retail loan categories was relatively unchanged.

TABLE 13. ALLOCATION OF THE ALLOWANCE FOR CREDIT LOSSES

(unaudited, dollars in thousands)	September 30, 2018		Percent of Total		December 31, 2017		Percent of Total
Allowance for loan losses:
Commercial real estate—land and construction	$	4,169		8.4	$	3,117		6.8
Commercial real estate—improved property		20,824		42.0		21,166		46.2
Commercial and industrial		12,051		24.3		9,414		20.5
Residential real estate		3,775		7.6		3,206		7.0
Home equity		4,290		8.7		4,497		9.8
Consumer		2,796		5.6		3,063		6.7
Deposit account overdrafts		997		2.0		821		1.6
Total allowance for loan losses	$	48,902		98.6	$	45,284		98.6
Allowance for loan commitments:
Commercial real estate—land and construction	$	186		0.4	$	119		0.3
Commercial real estate—improved property		23		0.0		26		0.1
Commercial and industrial		205		0.4		173		0.4
Residential real estate		9		0.0		7		0.0
Home equity		221		0.5		212		0.5
Consumer		40		0.1		37		0.1
Total allowance for loan commitments		684		1.4		574		1.4
Total allowance for credit losses	$	49,586		100.0	$	45,858		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 September 30, 2018.

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DEPOSITS

TABLE 14. DEPOSITS

(unaudited, dollars in thousands)	September 30, 2018		December 31, 2017		$ Change		% Change
Deposits
Non-interest bearing demand	$	2,411,862	$	1,846,748	$	565,114		30.6
Interest bearing demand		2,187,662		1,625,015		562,647		34.6
Money market		1,178,950		1,024,856		154,094		15.0
Savings deposits		1,649,684		1,269,912		379,772		29.9
Certificates of deposit		1,513,600		1,277,057		236,543		18.5
Total deposits	$	8,941,758	$	7,043,588	$	1,898,170		26.9

Deposits, which represent WesBanco’s primary source of funds, are offered in various account forms at various rates through WesBanco’s 209 financial centers. The FDIC insures deposits up to $250,000 per account.

Total deposits increased by $1.9 billion or 26.9% during the first nine months of 2018 primarily due to the FTSB and FFKT acquisitions, which provided $1.9 billion of additional deposits, while organic deposits decreased $21.9 million or 0.3% from December 31, 2017. Interest bearing demand and non-interest bearing demand deposits increased 34.6% and 30.6%, respectively, while savings and money market deposits increased 29.9% and 15.0%, respectively, due to the FTSB and FFKT acquisitions. Organic growth of $197.4 million for categories of deposits excluding certificates of deposit were the result of marketing, customer and employee incentives, focused retail and business strategies to obtain more account relationships and customer preferences for shorter-term maturities, coupled with 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. Money market deposits were influenced through WesBanco’s participation in the Insured Cash Sweep (ICS^®) money market deposit program. ICS^® reciprocal balances totaled $60.0 million at September 30, 2018 compared to $65.9 million at December 31, 2017.

Certificates of deposit increased $236.5 million primarily due to the FTSB and FFKT acquisitions, which provided $455.8 million in additional certificates of deposit, while organic deposits decreased by 17.2%. The organic deposits decrease was affected by an overall corporate strategy designed to increase and remix retail deposit relationships and reducing single service customers with a focus on overall products that can be offered at a lower cost to WesBanco. The decline was also impacted by lower than competitor offered rates on certain maturing certificates of deposit in a rising rate environment 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. CDARS^® balances totaled $64.6 million in outstanding balances at September 30, 2018, of which $33.7 million represented one-way buys, compared to $105.0 million in total outstanding balances at December 31, 2017, of which $72.7 million represented one-way buys. Certificates of deposit greater than $250,000 were approximately $343.5 million at September 30, 2018 compared to $216.4 million at December 31, 2017. Certificates of deposit of $100,000 or more were approximately $726.6 million at September 30, 2018 compared to $581.6 million at December 31, 2017. Both categories were influenced by jumbo certificates of deposit inherited from the two acquisitions. Certificates of deposit totaling approximately $885.1 million at September 30, 2018 with a cost of 0.94% are scheduled to mature within the next 12 months. WesBanco intends to 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 or match competitor rates on certain certificates of deposit maturities and savings products based on competition, sales strategies, liquidity needs and wholesale borrowing costs.

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BORROWINGS

TABLE 15. BORROWINGS

(unaudited, dollars in thousands)	September 30, 2018		December 31, 2017		$ Change		% Change
Federal Home Loan Bank Borrowings	$	1,131,253	$	948,203	$	183,050		19.3
Other short-term borrowings		294,281		184,805		109,476		59.2
Subordinated debt and junior subordinated debt		189,745		164,327		25,418		15.5
Total	$	1,615,279	$	1,297,335	$	317,944		24.5

While borrowings are a significant source of funding for WesBanco, they are less significant as compared to total deposits. During the first nine months of 2018, FHLB borrowings increased $183.1 million, as $575.0 million in advances, coupled with $52.3 million and $3.0 million in advances from the FTSB and FFKT acquisitions, respectively, offset $447.4 million in maturities and other principal pay downs. In addition, WesBanco extended the maturities of approximately $320.0 million of maturing FHLB borrowings in the first nine months of 2018 with an average maturing cost of 1.35%, at a current average rate of 2.62% and an average term of 2.2 years. Rates have generally increased over the past year on all borrowing types due to four federal funds rate increases of 25 basis points each and associated LIBOR rate increases.

Other short-term borrowings, which consist of securities sold under agreements to repurchase at September 30, 2018, but may also include federal funds purchased and notes payable, were $294.3 million at September 30, 2018 compared to $184.8 million at December 31, 2017. The increase is primarily due to a $134.5 million increase in securities sold under agreements to repurchase, including $9.2 million and $35.3 million acquired from FTSB and FFKT, respectively, which was partially offset by the repayments of $25.0 million in federal funds purchased outstanding at December 31, 2017.

Subordinated debt and junior subordinated debt were $189.7 million at September 30, 2018 compared to $164.3 million at December 31, 2017. The increase is primarily due to $9.3 million and $33.5 million in junior subordinated debt acquired from the FTSB and FFKT acquisitions, respectively, which was partially offset by the redemption of $17.5 million in junior subordinated debt during the first nine months of 2018 from the YCB and FTSB acquisitions.

WesBanco renewed a revolving line of credit in September 2018, 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 was no outstanding balance at September 30, 2018 or December 31, 2017.

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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 11, “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 increased $531.9 million or 38.1% from $1.4 billion at December 31, 2017. The increase was due primarily to $107.3 million and $391.3 million of common stock issued in the FTSB and FFKT acquisitions, respectively, coupled with net income during the current nine-month period of $99.2 million, which was partially offset by the declaration of common shareholder dividends totaling $42.1 million and $28.4 million in additional other comprehensive loss for the nine months ended September 30, 2018. The other comprehensive loss was due primarily to an unrealized loss in the securities portfolio, which was partially offset by an unrealized gain in the defined benefit pension plan and other postretirement benefits. WesBanco also increased its quarterly dividend rate to $0.29 per share in February, representing an 11.5% increase over the prior quarterly rate and a cumulative 107% increase since 2010.

WesBanco purchased 14,741 shares during the nine-month period ended September 30, 2018 under the current share repurchase plans. The shares were repurchased from employees for the payment of withholding taxes to facilitate stock compensation transactions. At September 30, 2018, the remaining shares authorized to be purchased under the current repurchase plans totaled 1,092,556 shares.

On February 22, 2018, WesBanco granted 12,000 Total Shareholder Return Plan (“TSR”) shares for the performance period beginning January 1, 2018 and ending December 31, 2020 to certain executives. The award is determined at the end of the three-year period if the TSR of WesBanco common stock is equal to or greater than the 50^th percentile of the TSR of the peer group. The number of shares to be earned by the participant shall be 200% of the grant-date award if the TSR of WesBanco common stock is equal to or greater than the 75^th percentile of the TSR of the peer group. Upon achieving the market-based metric, shares determined to be earned by the participant become time-based and vest in three equal annual installments.

On May 16, 2018, WesBanco granted 117,600 stock options to selected officers at an exercise price of $45.65. These options are service-based and vest 50% at December 31, 2018 and 50% at December 31, 2019. On the same date, WesBanco also issued 70,151 shares of time-based restricted stock to selected officers and 8,081 shares of performance-based restricted stock to selected officers. In addition on April 5, 2018, WesBanco issued 9,465 shares of time-based restricted stock to certain former officers of FTSB who became officers of WesBanco upon the FTSB acquisition closing. The time-based restricted shares are service-based and cliff-vest 36 months from the date of grant. On August 20, 2018, WesBanco issued 18,685 shares of time-based restricted stock to certain former officers of FFKT who became officers of WesBanco upon the FFKT acquisition closing. The time-based restricted shares are service-based and cliff-vest 24 months from the date of grant. The performance-based restricted shares have a three-year performance period, beginning January 1, 2019, based on WesBanco’s return on average assets and return on average tangible common equity measured for each year, compared to a national peer group of peer financial institutions with total assets between approximately $9 billion and $15 billion. Earned performance-based restricted shares are also subject to additional service-based vesting with 50% vesting on May 16, 2022 after the completion of the three-year performance period and the final 50% vesting on May 16, 2023.

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 September 30, 2018, 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 September 30, 2018, under FDIC regulations, WesBanco could receive, without prior regulatory approval, a dividend of approximately $82.5 million from the Bank. WesBanco intends to continue to improve its consolidated and Bank capital ratios as necessary over time, 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:

							September 30, 2018							December 31, 2017
(unaudited, dollars in thousands)	Minimum Value (1)			Well Capitalized (2)			Amount		Ratio			Minimum Amount (1)		Amount		Ratio			Minimum Amount (1)
WesBanco, Inc.
Tier 1 leverage		4.00	%		5.00	%	$	1,219,143		11.22	%	$	434,706	$	970,425		10.39	%	$	373,566
Common equity Tier 1		4.50	%		6.50	%		1,056,643		12.41	%		382,980		834,554		12.14	%		309,298
Tier 1 capital to risk-weighted assets		6.00	%		8.00	%		1,219,143		14.32	%		510,639		970,425		14.12	%		412,397
Total capital to risk-weighted assets		8.00	%		10.00	%		1,293,940		15.20	%		680,852		1,042,124		15.16	%		549,863
WesBanco Bank, Inc.
Tier 1 leverage		4.00	%		5.00	%	$	1,075,825		10.09	%	$	426,372	$	869,227		9.32	%	$	372,900
Common equity Tier 1		4.50	%		6.50	%		1,075,825		12.65	%		382,682		869,227		12.66	%		308,900
Tier 1 capital to risk-weighted assets		6.00	%		8.00	%		1,075,825		12.65	%		510,242		869,227		12.66	%		411,866
Total capital to risk-weighted assets		8.00	%		10.00	%		1,150,622		13.53	%		680,323		940,303		13.70	%		549,155

(1) Minimum requirements to remain adequately capitalized.

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

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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 60.9% at September 30, 2018 and deposit balances funded 71.0% of assets.

The following table lists the sources of liquidity from assets at September 30, 2018 expected within the next year:

(unaudited, in thousands)
Cash and cash equivalents	$	273,680
Securities with a maturity date within the next year and callable securities		279,399
Projected payments and prepayments on mortgage-backed securities and collateralized mortgage obligations (1)		254,631
Loans held for sale		55,913
Accruing loans scheduled to mature		993,203
Normal loan repayments		1,529,933
Total sources of liquidity expected within the next year	$	3,386,759

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

Deposit flows are another principal factor affecting overall WesBanco liquidity. Deposits totaled $8.9 billion at September 30, 2018. 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 $885.1 million at September 30, 2018, which includes jumbo regular certificates of deposit totaling $408.7 million with a weighted-average cost of 1.38%, and jumbo CDARS^® deposits of $39.2 million with a weighted-average cost of 1.32%.

WesBanco maintains a line of credit with the FHLB as an additional funding source. Available credit with the FHLB at September 30, 2018 and December 31, 2017 approximated $2.3 billion and $1.8 billion, respectively. 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. At September 30, 2018, the Bank had unpledged available-for-sale securities with an amortized cost of $413.9 million, representing 20.5% of that portfolio. These securities could be sold for additional liquidity, or could be pledged to secure additional FHLB borrowings. Available liquidity through the sale of investment securities is limited to those that are designated as available-for-sale and are unpledged, due to the pledging agreements that WesBanco has with their public deposit customers. Public deposit balances have increased significantly through the ESB and YCB acquisitions in the past three years. WesBanco’s held-to-maturity portfolio currently contains $683.0 million of unpledged securities. However, most of the balance represents municipal bonds, which can only be pledged in limited circumstances. Unless in compliance with certain criteria, these securities cannot be sold without tainting the remainder of the held-to-maturity portfolio. If tainting occurs, all remaining securities with the held-to-maturity designation would be required to move to available-for-sale, and the held-to-maturity designation would not be available to WesBanco for some time.

WesBanco participates in the Federal Reserve Bank’s Borrower-in-Custody Program (“BIC”) whereby WesBanco pledges certain consumer loans as collateral for borrowings. At September 30, 2018, WesBanco had a BIC line of credit totaling $164.5 million, none of which was outstanding. Alternative funding sources may include the utilization of existing overnight lines of credit with third party banks totaling $275.0 million, none of which was outstanding at September 30, 2018, 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 $294.3 million at September 30, 2018 consisted of callable repurchase agreements and overnight sweep checking accounts for large commercial customers. There has been an increase of $65.9 million in the average deposit balances of the overnight sweep checking accounts during 2018 from commercial customers seeking higher rates upon cash management balances along with balances from the two acquisitions. The overnight sweep checking accounts require U.S. Government 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, $115.9 million in cash and investments on hand, and a $25.0 million revolving line of credit with another bank, which did not have an outstanding balance at September 30, 2018. 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 September 30, 2018, under FDIC and State of West Virginia regulations, WesBanco could receive, without prior regulatory approval, dividends of approximately $82.5 million from the Bank. Management believes these are appropriate levels of cash for WesBanco given current needs for parent company liquidity. 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.

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WesBanco had outstanding commitments to extend credit in the ordinary course of business approximating $2.4 billion and $1.8 billion at September 30, 2018 and December 31, 2017, respectively. On a historical basis, only a small portion of these commitments will result in an outflow of funds. Please refer to Note 11, “Commitments and Contingent Liabilities,” of the Consolidated Financial Statements and the “Loans and Loan Commitments” section of this MD&A for additional information.

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 September 30, 2018 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 is a Board-level committee with Board and executive management representation, including the Chief Executive Officer, Chief Financial Officer, Chief Risk Management Officer and Senior Treasury Officer. It is responsible for monitoring and managing interest rate risk within Board-approved policy limits. Interest rate risk is monitored through the use of an earnings sensitivity simulation model and an economic value-at-risk model, measuring the fair value of net equity. These models are 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 and reviewed quarterly by the ALCO, while appropriate documentation is maintained.

The earnings sensitivity 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, security call dates, changes to deposit product betas, and non-maturity deposit decay rates, which may not necessarily reflect the manner in which actual cash flows, yields, and costs respond to changes in market interest rates. Assumptions are based on historical experience, current market rates and economic forecasts, and are periodically back-tested and reviewed by a third-party consultant. The net interest income sensitivity results presented in Table 1, “Net Interest Income Sensitivity,” assumes that the balance sheet 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, this analysis does not consider actions that management might employ in response to changes in interest rates as well as 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 immediate and sustained market interest rate increases and decreases of 100 - 400 basis points across the entire yield curve, compared to a stable rate environment or base model. WesBanco’s current policy limits this exposure for the noted interest rate changes to a reduction of between 10% - 20% or less of net interest income from the stable rate base model over a twelve-month period. The table below shows WesBanco’s interest rate sensitivity at September 30, 2018 and December 31, 2017, assuming the above-noted interest rate increases as compared to a base model. In the current lower interest rate environment, particularly for short-term rates, the 300 - 400 basis point decreasing changes are not shown due to the unrealistic nature of results associated with short-term negative rates.

TABLE 1. NET INTEREST INCOME SENSITIVITY

Immediate Change in Interest Rates (basis points)	Percentage Change in Net Interest Income from Base over One Year		ALCO Guidelines
	September 30, 2018	December 31, 2017
+400	5.1%	8.3%	(20.0%)
+300	4.0%	6.2%	(15.0%)
+200	2.9%	4.0%	(12.5%)
+100	1.7%	2.4%	(10.0%)
-100	(2.0%)	(3.0%)	(10.0%)
-200	(5.6%)	(8.3%)	(12.5%)

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As per the table above, the earnings sensitivity simulation model at September 30, 2018 currently projects that net interest income for the next twelve-month period would decrease by 2.0% - 5.6% if interest rates were to fall immediately by 100 - 200 basis points, compared to decreases of 3.0% - 8.3% for the same scenarios as of December 31, 2017.

For rising rate scenarios, net interest income would increase by between 1.7% - 5.1% if rates were to increase by between 100 - 400 basis points as of September 30, 2018, compared to increases of between 2.4% - 8.3% in a 100 - 400 basis point increasing rate environment as of December 31, 2017.

In addition the aforementioned parallel rate shock scenarios, management also utilizes a “Most Likely” forecast scenario to project net interest income over a rolling two-year time period. This forecast is updated and reviewed at least quarterly, incorporating revisions and updated assumptions into the model for estimated loan and deposit growth, balance sheet re-mixing strategies, changes in forecasted rates for various maturities, competitive market spreads for various products, and other assumptions. Such modeling helps to predict changes in forecasted outcomes and necessary adjustments to the plan to achieve management’s earnings goals.

The balance sheet shows somewhat lower asset sensitivity as of September 30, 2018, as compared to December 31, 2017, with differences resulting from changes in the mix of, and growth in various earning assets and costing liabilities, as well as adjustments for various modeling assumptions such as deposit beta rates, decay rates for non-maturity deposits and loan prepayment speeds. Generally, deposit betas utilized in the model are currently higher than the Bank’s experience to date thru eight federal funds rate increases since December, 2015, as management seeks to control the overall rate of increase in deposit costs to improve the net interest margin over time. Deposit decay rates and loan prepayment speeds have also been adjusted to reflect more recent experience with the various loan and non-maturity deposit products. Management believes that overall asset sensitivity in non-parallel rising rate scenarios may be somewhat neutralized due to slower prepayment speeds, rate floors, lower than forecasted increases to loan yields, spread compression between new asset yields and funding costs, extension risk associated with residential mortgages and mortgage-related securities, and other earning asset and costing liability differences. Commercial loans with floors currently average 4.27% on approximately $1.5 billion, or 29% of total commercial loans at September 30, 2018, as compared to $1.2 billion or 30% of commercial loans at December 31, 2017. Approximately 41% or $627.5 million of these loans are currently priced at their floor, as compared to 45% or $552.6 million at December 31, 2017. In a less than 100 basis point rising rate environment, these loans may not adjust as rapidly from their current floor level as compared to loans without floors.

The net interest margin increased seven basis points from the second quarter, and two basis points from the third quarter of last year, while it is down one basis point for the nine month period as compared to the same period last year. The tax-exempt securities portfolio tax-equivalent rate adjustment from 35% to 21% caused a reduction in the overall net interest margin by six basis points, but with increased short term rates, higher non-interest bearing deposits and low deposit betas, the margin has increased almost back to the same level as last year for the nine month period, and has rebounded for the quarterly comparisons for the same reasons along with the contribution from the higher margin assets from FFKT. Net interest margin expansion in the short run may occur due to a full quarter of the higher margin assets received from FFKT plus higher accretion, particularly for acquired loans, and in the medium term from potential additional federal funds increases, a widening of the shape of the yield curve and controlled deposit betas, in addition to continued execution of our business strategy to grow certain loan categories and remixing higher cost liabilities into lower cost transaction accounts. Net purchase accounting accretion, which was 11 b.p. in the third quarter and 10 b.p. year-to-date, was influenced positively by the two acquisitions in April and August of FTSB and FFKT, and should increase somewhat for the fourth quarter due to the full quarter’s impact of the FFKT accretion, which should positively impact the margin next year as well. Management currently anticipates that one more federal funds rate increase may occur by the end of 2018, consistent with Federal Reserve and consensus economist expectations, with two to three increases of 25 b.p. each expected for 2019. Delays in implementing further rate increases, increases to deposit betas beyond our current modeling assumptions or adjustments to the mix of earning assets and costing liabilities may have a negative impact on management’s estimates of the future direction and level of the net interest margin.

While many Bank customers over the past few years have moved their maturing certificates of deposit balances to lower-costing transaction accounts as well as into non-deposit products, as rates continue to rise, a portion of these lower-cost transaction account balances may migrate to higher-costing certificates of deposit, short-term repos or higher-priced tiers of money market accounts. The continuing runoff of certificate of deposit balances, both organically and from prior acquisitions, including reducing single-service deposit customers through an emphasis on relationship pricing, has been replaced with FHLB and other short-term borrowings. Certificates of deposit totaling approximately $885.1 million mature within the next year at an average cost of 0.94%; replacement borrowings are currently more expensive than the average runoff rate of these CDs. Also, maturing borrowings’ replacement rates are generally higher than the cost of the maturing borrowings’ average rate, and management may elect to lengthen the maturing borrowings’ terms at a higher cost for liquidity and asset liability purposes.

The Bank has significant additional borrowing capacity with the FHLB of Pittsburgh, the Federal Reserve Bank of Cleveland, and correspondent banks, and may utilize these funding sources or interest rate swap strategies as necessary to lengthen liabilities, offset mismatches in various asset maturities, and manage liquidity. CDARS^® and ICS^® deposits also may be used for similar purposes for certain customers seeking higher-yielding instruments or maintaining deposit levels below FDIC insurance limits. Significant balance sheet strategies to assist in managing the net interest margin in the current environment include:

• increasing total loans, particularly commercial and home equity loans that have variable or adjustable features;

• selling a majority of residential mortgage loan production into the secondary market;

• growing demand deposit account types to increase the relative portion of these account types to total deposits;

• employing back-to-back loan swaps for certain commercial loan customers desiring a term fixed rate loan equivalent with the Bank receiving a variable rate;

• extending FHLB short-term maturing borrowings to balance asset/liability mismatches;

• using the CDARS^® and ICS^® deposit programs to manage overall liability mix, and

• managing the size of the investment portfolio as part of liquidity and balance sheet management strategies.

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WesBanco also periodically measures the economic value of equity, which is defined as the market value of tangible equity in various rate scenarios. At September 30, 2018, the market value of tangible equity as a percent of base in a 200 basis point rising rate environment indicates a decrease of 8.4%, compared to a decrease of 1.8% at December 31, 2017. In a 200 basis point falling rate environment at September 30, 2018, the model indicates an increase of 3.7%, compared to a decrease of 9.9% as of December 31, 2017. WesBanco’s policy is to limit such change to minus 10% increments for each 100 basis point change in interest rates. Generally, changes in the economic value of equity relate to changes in various assets and liabilities, as well as changes in loan prepayment speeds and deposit decay rates.

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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 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 September 30, 2018 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

WesBanco is involved in various 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.

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

As of September 30, 2018, WesBanco had two active one million share stock repurchase plans. The first plan was originally approved by the Board of Directors on March 21, 2007 and the second, which is incremental to the first, was approved October 22, 2015. Each 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.

The following table presents the monthly share purchase activity during the quarter ended September 30, 2018:

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 June 30, 2018								1,092,883
July 1, 2018 to July 31, 2018
Open market repurchases		—	$	—		—		1,092,883
Other transactions (1)		16,288		46.32		N/A		N/A
August 1, 2018 to August 31, 2018
Open market repurchases		—	$	—		—		1,092,883
Other transactions (1)		1,749		49.38		N/A		N/A
September 1, 2018 to September 30, 2018
Open market repurchases		—	$	—		—		1,092,883
Other repurchases (2)		327		46.13		327		1,092,556
Other transactions (1)		1,521		46.16		N/A		N/A
Third Quarter 2018
Open market repurchases		—	$	—		—		1,092,883
Other repurchases (2)		327		46.13		327		1,092,556
Other transactions (1)		19,558		46.58		N/A		N/A
Total		19,885	$	46.57		327		1,092,556

(1) Consists of open market purchases transacted for employee benefit and dividend reinvestment plans.

(2) Consists of shares purchased from employees for the payment of withholding taxes to facilitate a stock compensation transaction.

N/A – Not applicable

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ITEM 6. EXHIBITS

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 September 30, 2018, formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Balance Sheets at September 30, 2018 and December 31, 2017, (ii) the Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2018 and 2017, (iii) the Consolidated Statements of Changes in Stockholders’ Equity for the nine months ended September 30, 2018 and 2017, (iv) the Consolidated Statements of Cash Flows for the nine months ended September 30, 2018 and 2017, and (v) the Notes to Consolidated Financial Statements.

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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: November 2, 2018		/s/ Todd F. Clossin
		Todd F. Clossin
		President and Chief Executive Officer
		(Principal Executive Officer)
Date: November 2, 2018		/s/ Robert H. Young
		Robert H. Young
		Executive Vice President and Chief Financial Officer
		(Principal Financial and Accounting Officer)

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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: November 2, 2018	/s/ Todd F. Clossin
	Todd F. Clossin
	President and Chief Executive 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: November 2, 2018	/s/ Todd F. Clossin
	Todd F. Clossin
	President and Chief Executive Officer
Date: November 2, 2018	/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.

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: November 2, 2018	/s/ Robert H. Young
	Robert H. Young
	Executive Vice President and Chief Financial Officer

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 22, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
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 Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		54,598,186

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks, including interest bearing amounts of $88,854 and $19,826, respectively	$ 273,680	$ 117,572
Securities:
Equity securities, at fair value	12,784	13,457
Available-for-sale debt securities, at fair value	2,008,232	1,261,865
Held-to-maturity debt securities (fair values of $1,014,361 and $1,023,784, respectively)	1,025,538	1,009,500
Total securities	3,046,554	2,284,822
Loans held for sale	55,913	20,320
Portfolio loans, net of unearned income	7,726,423	6,341,441
Allowance for loan losses	(48,902)	(45,284)
Net portfolio loans	7,677,521	6,296,157
Premises and equipment, net	159,284	130,722
Accrued interest receivable	39,465	29,728
Goodwill and other intangible assets, net	928,083	589,264
Bank-owned life insurance	223,995	192,589
Other assets	194,984	155,004
Total Assets	12,599,479	9,816,178
Deposits:
Non-interest bearing demand	2,411,862	1,846,748
Interest bearing demand	2,187,662	1,625,015
Money market	1,178,950	1,024,856
Savings deposits	1,649,684	1,269,912
Certificates of deposit	1,513,600	1,277,057
Total deposits	8,941,758	7,043,588
Federal Home Loan Bank borrowings	1,131,253	948,203
Other short-term borrowings	294,281	184,805
Subordinated debt and junior subordinated debt	189,745	164,327
Total borrowings	1,615,279	1,297,335
Accrued interest payable	6,623	3,178
Other liabilities	108,550	76,756
Total Liabilities	10,672,210	8,420,857
SHAREHOLDERS' EQUITY
Preferred stock, no par value; 1,000,000 shares authorized; none outstanding
Common stock, $2.0833 par value; 100,000,000 shares authorized in 2018 and 2017, respectively; 54,604,294 and 44,043,244 shares issued, respectively; 54,603,967 and 44,043,244 shares outstanding, respectively	113,758	91,756
Capital surplus	1,165,006	684,730
Retained earnings	709,477	651,357
Treasury stock (327 and 0 shares-at cost, respectively)	(15)
Accumulated other comprehensive loss	(59,873)	(31,495)
Deferred benefits for directors	(1,084)	(1,027)
Total Shareholders' Equity	1,927,269	1,395,321
Total Liabilities and Shareholders' Equity	$ 12,599,479	$ 9,816,178

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Interest bearing deposits, banks	$ 88,854	$ 19,826
Held-to-maturity securities, fair values	$ 1,014,361	$ 1,023,784
Preferred stock, no par value
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	100,000,000	100,000,000
Common stock, shares issued	54,604,294	44,043,244
Common stock, shares outstanding	54,603,967	44,043,244
Treasury stock, shares	327	0

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
INTEREST AND DIVIDEND INCOME
Loans, including fees	$ 86,605	$ 70,342	$ 234,276	$ 202,600
Interest and dividends on securities:
Taxable	14,964	9,711	40,702	28,682
Tax-exempt	5,326	4,862	15,216	14,617
Total interest and dividends on securities	20,290	14,573	55,918	43,299
Other interest income	1,498	574	3,402	1,674
Total interest and dividend income	108,393	85,489	293,596	247,573
INTEREST EXPENSE
Interest bearing demand deposits	3,501	1,814	9,174	4,413
Money market deposits	1,360	751	3,332	1,970
Savings deposits	352	189	768	555
Certificates of deposit	3,276	2,610	8,789	7,512
Total interest expense on deposits	8,489	5,364	22,063	14,450
Federal Home Loan Bank borrowings	6,691	3,628	17,142	9,608
Other short-term borrowings	965	394	2,497	954
Subordinated debt and junior subordinated debt	2,315	1,849	6,425	5,449
Total interest expense	18,460	11,235	48,127	30,461
NET INTEREST INCOME	89,933	74,254	245,469	217,112
Provision for credit losses	1,035	2,516	4,911	7,610
Net interest income after provision for credit losses	88,898	71,738	240,558	209,502
NON-INTEREST INCOME
Electronic banking fees	6,139	4,883	16,697	14,395
Net securities brokerage revenue	1,836	1,721	5,315	5,164
Bank-owned life insurance	1,232	1,164	5,116	3,671
Mortgage banking income	1,521	1,103	4,297	3,511
Net securities gains	84	6	403	511
Net gain/(loss) on other real estate owned and other assets	150	(298)	641	9
Other income	2,684	1,642	6,444	6,318
Total non-interest income	26,224	20,899	73,715	65,906
NON-INTEREST EXPENSE
Salaries and wages	30,335	24,957	82,213	71,575
Employee benefits	7,905	7,728	22,782	23,670
Net occupancy	4,957	4,132	13,715	12,969
Equipment	4,488	3,905	12,532	12,043
Marketing	1,446	1,599	3,967	4,482
FDIC insurance	789	945	2,315	2,677
Amortization of intangible assets	1,821	1,223	4,218	3,736
Restructuring and merger-related expense	10,811		16,468	491
Other operating expenses	13,568	11,265	36,024	34,380
Total non-interest expense	76,120	55,754	194,234	166,023
Income before provision for income taxes	39,002	36,883	120,039	109,385
Provision for income taxes	6,516	10,527	20,855	30,801
NET INCOME	$ 32,486	$ 26,356	$ 99,184	$ 78,584
EARNINGS PER COMMON SHARE
Basic	$ 0.65	$ 0.60	$ 2.11	$ 1.79
Diluted	$ 0.64	$ 0.60	$ 2.11	$ 1.78
AVERAGE COMMON SHARES OUTSTANDING
Basic	50,277,847	44,031,813	46,965,095	43,992,017
Diluted	50,432,112	44,086,881	47,107,829	44,059,469
DIVIDENDS DECLARED PER COMMON SHARE	$ 0.29	$ 0.26	$ 0.87	$ 0.78
COMPREHENSIVE INCOME	$ 25,965	$ 27,637	$ 71,869	$ 84,873
Total Trust Fees [Member]
NON-INTEREST INCOME
NON-INTEREST INCOME	6,265	5,358	18,520	17,073
Service Charges on Deposits [Member]
NON-INTEREST INCOME
NON-INTEREST INCOME	$ 6,313	$ 5,320	$ 16,282	$ 15,254

XML

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	First Sentry Bancshares, Inc. [Member]	Farmers Capital Bank Corporation [Member]	Common Stock [Member]	Common Stock [Member] First Sentry Bancshares, Inc. [Member]	Common Stock [Member] Farmers Capital Bank Corporation [Member]	Capital Surplus [Member]	Capital Surplus [Member] First Sentry Bancshares, Inc. [Member]	Capital Surplus [Member] Farmers Capital Bank Corporation [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Treasury Stock [Member] Farmers Capital Bank Corporation [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Deferred Benefits for Directors [Member]
Beginning Balance at Dec. 31, 2016	$ 1,341,408			$ 91,524			$ 680,507			$ 597,071			$ (27,126)	$ (568)
Beginning Balance, shares at Dec. 31, 2016				43,931,715
Net income	78,584									78,584
Other comprehensive income	6,289												6,289
Comprehensive income	84,873
Common dividends declared	(34,326)									(34,326)
Treasury shares acquired	(488)										$ (488)
Treasury shares acquired, shares				(12,987)
Stock options exercised	1,121			$ 75			858				188
Stock options exercised, shares				40,834
Restricted stock granted				$ 154			(154)
Restricted stock granted, shares				74,023
Stock compensation expense	1,970						1,970
Deferred benefits for directors- net							167							(167)
Ending Balance at Sep. 30, 2017	1,394,558			$ 91,753			683,348			641,329	(300)		(20,837)	(735)
Ending Balance, shares at Sep. 30, 2017				44,033,585
Beginning Balance at Dec. 31, 2017	1,395,321			$ 91,756			684,730			651,357			(31,495)	(1,027)
Beginning Balance, shares at Dec. 31, 2017				44,043,244
Net income	99,184									99,184
Other comprehensive income	(27,315)												(27,315)
Comprehensive income	71,869
Common dividends declared	(42,127)									(42,127)
Adoption of accounting standard ASU 2016-01										1,063			(1,063)
Shares issued for acquisition		$ 107,347	$ 391,267		$ 5,206	$ 16,487		$ 102,141	$ 374,464			$ 316
Shares issued for acquisition, shares					2,498,761	7,920,387
Treasury shares acquired	(696)						34				(730)
Treasury shares acquired, shares				(15,489)
Stock options exercised	1,849			$ 104			1,346				399
Stock options exercised, shares				58,763
Restricted stock granted				$ 205			(205)
Restricted stock granted, shares				98,301
Stock compensation expense	2,933						2,933
Deferred benefits for directors- net	(494)						(437)							(57)
Ending Balance at Sep. 30, 2018	$ 1,927,269			$ 113,758			$ 1,165,006			$ 709,477	$ (15)		$ (59,873)	$ (1,084)
Ending Balance, shares at Sep. 30, 2018				54,603,967

XML

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Stockholders' Equity [Abstract]
Common dividends declared, per share	$ 0.29	$ 0.26	$ 0.87	$ 0.78

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 122,444	$ 93,506
INVESTING ACTIVITIES
Net decrease (increase) in loans held for investment	52,411	(122,332)
Debt securities available-for-sale:
Proceeds from sales	82,134	7,760
Proceeds from maturities, prepayments and calls	188,020	156,944
Purchases of securities	(688,020)	(225,404)
Debt securities held-to-maturity:
Proceeds from maturities, prepayments and calls	51,973	90,457
Purchases of securities	(66,058)	(53,251)
Equity securities:
Proceeds from sales	1,511
Purchases of securities	(431)
Proceeds from bank-owned life insurance	4,772	349
Purchases of premises and equipment - net	(2,400)	(6,223)
Net cash received from acquisitions	278,654
Sale of portfolio loans-net	12,996
Net cash used in investing activities	(84,438)	(151,700)
FINANCING ACTIVITIES
(Decrease) increase in deposits	(20,443)	61,389
Proceeds from Federal Home Loan Bank borrowings	575,000	560,000
Repayment of Federal Home Loan Bank borrowings	(447,381)	(513,911)
Increase in other short-term borrowings	90,043	20,200
Decrease in federal funds purchased	(25,000)	(54,000)
Repayment of junior subordinated debt	(17,519)
Dividends paid to common shareholders	(37,751)	(33,416)
Issuance of common stock	1,578	991
Treasury shares purchased-net	(425)	(358)
Net cash provided by financing activities	118,102	40,895
Net increase (decrease) in cash and cash equivalents	156,108	(17,299)
Cash and cash equivalents at beginning of the period	117,572	128,170
Cash and cash equivalents at end of the period	273,680	110,871
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	46,524	29,857
Income taxes paid	13,050	20,825
Transfers of loans to other real estate owned	393	$ 506
Transfers of loans to held for sale	12,996
First Sentry Bancshares, Inc. [Member]
SUPPLEMENTAL DISCLOSURES
Non-cash transactions related to acquisition	107,347
Farmers Capital Bank Corporation [Member]
SUPPLEMENTAL DISCLOSURES
Non-cash transactions related to acquisition	$ 391,267

XML

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2018

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, 2017.

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 2017 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. Certain prior period amounts have been reclassified to conform to the current period presentation. Such reclassifications had no impact on WesBanco’s net income and stockholders’ equity. 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 August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-15, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract.” This ASU specifically aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. The ASU does not affect the accounting for the service element of a hosting arrangement that is a service contract. The guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2018-15 on WesBanco’s Consolidated Financial Statements.

In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans.” This ASU modifies ASC 715-20 to improve disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance is effective for fiscal years ending after December 15, 2020. Early adoption is permitted. WesBanco is currently assessing the impact of ASU 2018-14 on WesBanco’s Consolidated Financial Statements.

In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement – Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement.” This ASU modifies the disclosure objective paragraphs of ASC 820 to eliminate (1) “at a minimum” from the phrase “an entity shall disclose at a minimum” and (2) other similar “open ended” disclosure requirements to promote the appropriate exercise of discretion of entities. The guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2018-13 on WesBanco’s Consolidated Financial Statements.

In August 2017, the FASB issued ASU 2017-12, “Targeted Improvements to Accounting for Hedging Activities.” The new guidance will make more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amends the presentation and disclosure requirements and changes how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2017-12 on WesBanco’s Consolidated Financial Statements.

In March 2017, the FASB issued ASU 2017-07 that changes how an employer presents the net periodic benefit cost in the income statement for an employer-sponsored defined benefit pension and/or other postretirement benefit plans. Employers will present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit cost separately from the line items that includes the service cost outside of any subtotal of operating income, if one is presented. These components will not be eligible for capitalization in assets. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual period (i.e., only in the first interim period). For WesBanco, this update was effective for the fiscal year beginning January 1, 2018. Upon adoption, WesBanco reclassified the service cost component from employee benefits to salaries and wages, which are both components of non-interest expense. The service cost component for the three and nine months ended September 30, 2018 was $0.7 and $2.1 million, respectively.

In January 2017, the FASB issued ASU 2017-01, which clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In October 2016, the FASB issued ASU 2016-16 that provides the recognition of income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Current guidance prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. This prohibition on recognition is an exception to the principle of comprehensive recognition of current and deferred income taxes in generally accepted accounting principles. The exception has led to diversity in practice and is a source of complexity in financial reporting. FASB decided that an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Consequently, the amendments in this update eliminate the exception for an intra-entity transfer of an asset other than inventory. The amendments in this update do not include new disclosure requirements; however, existing disclosure requirements might be applicable when accounting for the current and deferred income taxes for an intra-entity transfer of an asset other than inventory. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The amendments in this update were to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15 that provides guidance for the classification of cash flows related to (1) debt prepayment or extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon rates that are insignificant in relation to the effective interest rate on the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions and (8) separately identifiable cash flows and application of the predominance principle. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In September 2016, the FASB issued ASU 2016-13 that will require entities to use a new forward-looking “expected loss” model on trade and other receivables, held-to-maturity debt securities, loans and other instruments that generally will result in the earlier recognition of allowances for credit losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. Entities will have to disclose significantly more information, including information they use to track credit quality by year of origination for most financing receivables. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, which for WesBanco will be effective for the fiscal year beginning January 1, 2020. Early adoption is permitted for fiscal years beginning after December 15, 2018. WesBanco has completed an initial data gap assessment, is currently finalizing the loan segmentation procedures and evaluating the various forecasting and modeling assumptions that will be used to estimate the initial current expected credit loss allowance.

In February 2016, the FASB issued ASU 2016-02 that will require entities to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. The principal difference from previous guidance is that the lease assets and lease liabilities arising from operating leases were not previously recognized in the balance sheet. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. In January 2018, the FASB issued ASU 2018-01, which allows entities the option to apply the provisions of the new lease guidance at the effective date without adjusting the comparative periods presented. In July 2018, the FASB issued ASU 2018-10, which provides narrow-scope improvements to the lease standard. While we are currently assessing the impact of the adoption of this pronouncement, we expect the primary impact to our consolidated financial position upon adoption will be the recognition, on a discounted basis, of our minimum commitments under non-cancellable operating leases on our Consolidated Balance Sheets resulting in the recording of right of use assets and lease obligations, which are expected to total approximately $15 million to $20 million. The estimate could change based on new leases entered into or amended before January 1, 2019.

In January 2016, the FASB issued ASU 2016-01 that will require entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income unless the investments qualify for the new practicability exception. The standard does not change the guidance for classifying and measuring investments in debt securities and loans. Entities will have to record changes in instrument-specific credit risk for financial liabilities measured under the fair value option in other comprehensive income. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. In February 2018, the FASB issued ASU 2018-03, which clarifies certain aspects of the guidance issued in ASU 2016-01. WesBanco adopted these pronouncements as of January 1, 2018 and recognized a $1.1 million adjustment to retained earnings upon adoption of this pronouncement. In addition, WesBanco reclassified investment securities on the Consolidated Financial Statements into the following – equity securities, available-for-sale debt securities and held-to-maturity debt securities.

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. On July 9, 2015, the FASB approved a one-year deferral of the effective date of the update. The update is effective for interim and annual reporting periods in fiscal years beginning after December 15, 2017. In March 2016, the FASB issued ASU 2016-08, which amends the principle versus agent guidance in the revenue standard. In April 2016, the FASB issued ASU 2016-10, which clarifies when promised goods or services are separately identifiable in the revenue standard. In May 2016, FASB issued ASU 2016-12, which provides narrow-scope improvements and practical expedients to the revenue standard. WesBanco adopted these pronouncements as of January 1, 2018 using the modified retrospective approach. WesBanco noted no material change to the timing of revenue recognition and there was no material impact on WesBanco’s Consolidated Financial Statements. See Note 9, “Revenue Recognition” for further discussion on revenue within the scope of ASC 606.

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Mergers and Acquisitions

9 Months Ended

Sep. 30, 2018

Business Combinations [Abstract]

Mergers and Acquisitions

NOTE 2. MERGERS AND ACQUISITIONS

First Sentry Bancshares, Inc. (“FTSB”)

On April 5, 2018, WesBanco completed its acquisition of FTSB, a bank holding company headquartered in Huntington, WV. On the acquisition date, FTSB had approximately $705.6 million in assets, excluding goodwill, which included approximately $448.1 million in loans and $142.9 million in securities. The FTSB acquisition was valued at $108.3 million, based on WesBanco’s closing stock price on April 5, 2018, of $42.96, and resulted in WesBanco issuing 2,498,761 shares of its common stock and $1.0 million in cash in exchange for all of the outstanding shares of FTSB common stock including stock options. The assets and liabilities of FTSB were recorded on WesBanco’s Balance Sheet at their preliminary estimated fair values as of April 5, 2018, the acquisition date, and FTSB’s results of operations have been included in WesBanco’s Consolidated Statements of Income since that date. The fair values for certain assets and liabilities acquired from FTSB on April 5, 2018 represent preliminary estimates. Based on a preliminary purchase price allocation, WesBanco recorded $66.8 million in goodwill and $8.1 million in core deposit intangibles in its Community Banking segment. None of the goodwill is deductible for income tax purposes, as the acquisition is accounted for as a tax-free exchange for tax purposes. As a result of the full integration of the operations of FTSB, it is not practicable to determine revenue or net income included in WesBanco’s operating results relating to FTSB since the date of acquisition, as FTSB’s results cannot be separately identified.

For the nine months ended September 30, 2018, WesBanco recorded merger-related expenses of $5.5 million associated with the FTSB acquisition.

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

(unaudited, in thousands)	April 5, 2018
Purchase Price:
Fair value of WesBanco shares issued	$	107,347
Cash consideration for outstanding FTSB shares		975
Total purchase price	$	108,322
Fair value of:
Tangible assets acquired	$	610,443
Core deposit and other intangible assets acquired		8,078
Liabilities assumed		(664,172	)
Net cash received in the acquisition		87,124
Fair value of net assets acquired		41,473
Goodwill recognized	$	66,849

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 FTSB within one year from the date of acquisition:

(unaudited, in thousands)	April 5, 2018
Assets acquired
Cash and due from banks	$	87,124
Securities		142,903
Loans		448,075
Goodwill and other intangible assets		74,927
Accrued income and other assets		19,465
Total assets acquired	$	772,494
Liabilities assumed
Deposits	$	590,065
Borrowings		70,710
Accrued expenses and other liabilities		3,397
Total liabilities assumed	$	664,172
Net assets acquired	$	108,322

The following table presents the changes in the allocation of the purchase price of the assets acquired and the liabilities assumed at the date of the acquisition previously reported as of June 30, 2018:

(unaudited, in thousands)	April 5, 2018
Goodwill recognized as of June 30, 2018	$	66,219
Change in fair value of net assets acquired:
Assets
Loans		(264	)
Other intangible assets		(159	)
Accrued income and other assets		(6	)
Liabilities
Deposits		(47	)
Accrued expenses and other liabilities		(154	)
Fair value of net assets acquired	$	(630	)
Increase in goodwill recognized		630
Goodwill recognized as of September 30, 2018	$	66,849

The fair value estimates for loans, deferred taxes and other liabilities have continued to fluctuate as the final valuations and/or appraisals are completed. The Company expects to finalize the purchase price accounts of FTSB within one year of the date of acquisition.

Farmers Capital Bank Corporation (“FFKT”)

On August 20, 2018, WesBanco completed its acquisition of FFKT, a bank holding company headquartered in Frankfort, KY. On the acquisition date, FFKT had approximately $1.6 billion in assets, excluding goodwill, which included approximately $1.0 billion in loans and $239.3 million in securities. The FFKT acquisition was valued at $428.9 million, based on WesBanco’s closing stock price on August 20, 2018, of $49.40, and resulted in WesBanco issuing 7,920,387 shares of its common stock and $37.6 million in cash in exchange for all of the outstanding shares of FFKT common stock. The assets and liabilities of FFKT were recorded on WesBanco’s Balance Sheet at their preliminary estimated fair values as of August 20, 2018, the acquisition date, and FFKT’s results of operations have been included in WesBanco’s Consolidated Statements of Income since that date. Due to the timing of the acquisition relative to the end of the reporting period, the fair values for certain assets and liabilities acquired from FFKT on August 20, 2018 represent preliminary estimates. Based on a preliminary purchase price allocation, WesBanco recorded $225.1 million in goodwill and $39.7 million in core deposit intangibles in its community banking segment and $2.9 million in trust customer relationship intangibles in its trust and investment services segment. None of the goodwill is deductible for income tax purposes, as the acquisition is accounted for as a tax-free exchange for tax purposes. As a result of the full integration of the operations of FFKT, it is not practicable to determine revenue or net income included in WesBanco’s operating results relating to FFKT since the date of acquisition, as FFKT’s results cannot be separately identified.

For the nine months ended September 30, 2018, WesBanco recorded merger-related expenses of $11.0 million associated with the FFKT acquisition.

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

(unaudited, in thousands)	August 20, 2018
Purchase Price:
Fair value of WesBanco shares issued	$	391,267
Cash consideration for outstanding FFKT shares		37,634
Total purchase price	$	428,901
Fair value of:
Tangible assets acquired	$	1,360,951
Core deposit and other intangible assets acquired		42,593
Liabilities assumed		(1,429,874	)
Net cash received in the acquisition		230,139
Fair value of net assets acquired		203,809
Goodwill recognized	$	225,092

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 FFKT within one year from the date of acquisition:

(unaudited, in thousands)	August 20, 2018
Assets acquired
Cash and due from banks	$	230,139
Securities		239,321
Loans		1,028,120
Goodwill and other intangible assets		267,685
Accrued income and other assets		93,510
Total assets acquired	$	1,858,775
Liabilities assumed
Deposits	$	1,330,328
Borrowings		71,780
Accrued expenses and other liabilities		27,766
Total liabilities assumed	$	1,429,874
Net assets acquired	$	428,901

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Earnings Per Common Share

9 Months Ended

Sep. 30, 2018

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 September 30,				For the Nine Months Ended September 30,
(unaudited, in thousands, except shares and per share amounts)	2018		2017		2018		2017
Numerator for both basic and diluted earnings per common share:
Net income	$	32,486	$	26,356	$	99,184	$	78,584
Denominator:
Total average basic common shares outstanding		50,277,847		44,031,813		46,965,095		43,992,017
Effect of dilutive stock options and other stock compensation		154,265		55,068		142,734		67,452
Total diluted average common shares outstanding		50,432,112		44,086,881		47,107,829		44,059,469
Earnings per common share—basic	$	0.65	$	0.60	$	2.11	$	1.79
Earnings per common share—diluted	$	0.64	$	0.60	$	2.11	$	1.78

All options to purchase shares were included in the computation of net income per diluted share for the three months ended September 30, 2018 while 117,550 shares were not included in the computation of net income per diluted share for the three months ended September 30, 2017 because the exercise price was greater than the average market price of the common shares and, therefore, the effect would be antidilutive. Options to purchase 117,600 shares at September 30, 2018 were not included in the computation of net income per diluted share for the nine months ended September 30, 2018 because the exercise price was greater than the average market price of the common shares, and therefore, the effect would be antidilutive. All stock options were included in the computation of net income per diluted share for the nine months ended September 30, 2017.

As of September 30, 2018, contingently issuable shares totaling 45,840, were estimated to be awarded under the 2018 and 2017 total shareholder return plans as stock performance targets have been met to date and are included in the diluted calculation. As of September 30, 2018, the shares related to the 2016 total shareholder return plan were not included in the calculation because the effect would be antidilutive. Performance-based restricted stock compensation totaling 17,081 shares were estimated to be awarded as of September 30, 2018 and are included in the diluted calculation for both the three months and nine months ended September 30, 2018. As of September 30, 2017, the shares related to the 2017 and 2016 total shareholder return plan were not included in the calculation because the effect would be antidilutive. Performance-based restricted stock compensation totaling 4,502 shares were estimated to be awarded as of September 30, 2017, and are included in the diluted calculation for both the three months and nine months ended September 30, 2017.

On April 5, 2018, WesBanco issued 2,498,761 shares of common stock to complete its acquisition of FTSB and granted 9,465 shares of restricted stock to certain FTSB employees. These shares are included in average shares outstanding beginning on that date. For additional information relating to the FTSB acquisition, refer to Note 2, “Mergers and Acquisitions.”

On August 20, 2018, WesBanco issued 7,920,387 shares of common stock, 6,690 of which were treasury stock, to complete its acquisition of FFKT and granted 18,685 shares of restricted stock to certain FFKT employees. These shares are included in average shares outstanding beginning on that date. For additional information relating to the FFKT acquisition, refer to Note 2, “Mergers and Acquisitions.”

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Securities

9 Months Ended

Sep. 30, 2018

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 debt securities:

	September 30, 2018									December 31, 2017
(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 debt securities
U.S. Treasury	$	9,952	$	—	$	(15	)	$	9,937	$	—	$	—	$	—		$	—
U.S. Government sponsored entities and agencies		154,054		17		(4,122	)		149,949		72,425		24		(606	)		71,843
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		1,500,563		44		(50,853	)		1,449,754		954,115		214		(19,407	)		934,922
Commerical mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		174,331		15		(5,585	)		168,761		116,448		4		(1,585	)		114,867
Obligations of states and political subdivisions		187,501		1,445		(2,295	)		186,651		102,363		2,927		(460	)		104,830
Corporate debt securities		43,259		160		(239	)		43,180		35,234		228		(59	)		35,403
Total available-for-sale debt securities	$	2,069,660	$	1,681	$	(63,109	)	$	2,008,232	$	1,280,585	$	3,397	$	(22,117	)	$	1,261,865
Held-to-maturity debt securities
U.S. Government sponsored entities and agencies	$	11,699	$	—	$	(615	)	$	11,084	$	11,465	$	—	$	(325	)	$	11,140
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		154,018		103		(6,788	)		147,333		170,025		544		(2,609	)		167,960
Obligations of states and political subdivisions		826,514		6,434		(9,743	)		823,205		794,655		17,364		(1,609	)		810,410
Corporate debt securities		33,307		5		(573	)		32,739		33,355		919		—			34,274
Total held-to-maturity debt securities	$	1,025,538	$	6,542	$	(17,719	)	$	1,014,361	$	1,009,500	$	18,827	$	(4,543	)	$	1,023,784
Total debt securities	$	3,095,198	$	8,223	$	(80,828	)	$	3,022,593	$	2,290,085	$	22,224	$	(26,660	)	$	2,285,649

At September 30, 2018, and December 31, 2017, there were no holdings of any one issuer, other than U.S. government sponsored entities and its agencies, in an amount greater than 10% of WesBanco’s shareholders’ equity.

Equity securities, of which $8.5 million consist of investments in various mutual funds held in grantor trusts formed in connection with the Company’s deferred compensation plan, are recorded at fair value and totaled $12.8 million and $13.5 million at September 30, 2018 and December 31, 2017, respectively.

The following table presents the fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at September 30, 2018. In some instances, the issuers may have the right to call or prepay obligations without penalty prior to the contractual maturity date.

	September 30, 2018
(unaudited, in thousands)	One Year or less		One to Five Years		Five to Ten Years		After Ten Years		Mortgage-backed securities		Total
Available-for-sale debt securities
U.S. Treasury	$	9,937	$	—	$	—	$	—	$	—	$	9,937
U.S. Government sponsored entities and agencies		10,479		6,260		17,881		15,298		100,031		149,949
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		1,449,754		1,449,754
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		168,761		168,761
Obligations of states and political subdivisions		9,288		48,959		76,972		51,432		—		186,651
Corporate debt securities		8,014		33,251		1,915		—		—		43,180
Total available-for-sale debt securities	$	37,718	$	88,470	$	96,768	$	66,730	$	1,718,546	$	2,008,232
Held-to-maturity debt securities (2)
U.S. Government sponsored entities and agencies	$	—	$	—	$	—	$	—	$	11,084	$	11,084
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		147,333		147,333
Obligations of states and political subdivisions		6,149		138,709		387,775		290,572		—		823,205
Corporate debt securities		—		7,449		25,290		—		—		32,739
Total held-to-maturity debt securities	$	6,149	$	146,158	$	413,065	$	290,572	$	158,417	$	1,014,361
Total debt securities	$	43,867	$	234,628	$	509,833	$	357,302	$	1,876,963	$	3,022,593

⁽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⁾  The held-to-maturity debt securities portfolio is carried at an amortized cost of $1.0 billion.

Securities with aggregate fair values of $1.9 billion and $1.4 billion at September 30, 2018 and December 31, 2017, 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 $82.1 million and $7.8 million for the nine months ended September 30, 2018 and 2017, respectively. Net unrealized losses on available-for-sale securities included in accumulated other comprehensive income net of tax, as of September 30, 2018 and December 31, 2017 were $47.3 million and $13.3 million, respectively.

The following table presents the gross realized gains and losses on sales and calls of available-for-sale and held-to-maturity debt securities, as well as gains and losses on equity securities for the three and nine months ended September 30, 2018 and 2017, respectively.

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	2018			2017			2018			2017
Debt securities:
Gross realized gains	$	88		$	29		$	100		$	603
Gross realized losses		(13	)		(23	)		(31	)		(92	)
Net gains on debt securities	$	75		$	6		$	69		$	511
Equity securities:
Unrealized gains recognized on securities still held	$	11		$	—		$	330		$	—
Net realized (losses) gains recognized on securities sold		(2	)		—			4			—
Net gains on equity securities	$	9		$	—		$	334		$	—
Net securities gains	$	84		$	6		$	403		$	511

The following tables provide information on unrealized losses on debt securities that have been in an unrealized loss position for less than twelve months and twelve months or more as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	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
U.S. Treasury	$	9,937	$	(15	)		1	$	—	$	—			—	$	9,937	$	(15	)		1
U.S. Government sponsored entities and agencies		93,881		(2,264	)		38		60,410		(2,473	)		11		154,291		(4,737	)		49
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		759,415		(13,670	)		188		822,774		(43,971	)		260		1,582,189		(57,641	)		448
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		79,056		(1,239	)		15		86,703		(4,346	)		11		165,759		(5,585	)		26
Obligations of states and political subdivisions		493,252		(7,866	)		855		120,843		(4,172	)		236		614,095		(12,038	)		1091
Corporate debt securities		42,816		(738	)		17		1,915		(74	)		1		44,731		(812	)		18
Total temporarily impaired securities	$	1,478,357	$	(25,792	)		1,114	$	1,092,645	$	(55,036	)		519	$	2,571,002	$	(80,828	)		1,633
	December 31, 2017
	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
U.S. Government sponsored entities and agencies	$	24,776	$	(160	)		4	$	42,248	$	(771	)		8	$	67,024	$	(931	)		12
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		423,794		(5,039	)		87		637,461		(16,977	)		193		1,061,255		(22,016	)		280
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		79,061		(1,089	)		10		27,852		(496	)		6		106,913		(1,585	)		16
Obligations of states and political subdivisions		132,831		(852	)		210		77,554		(1,217	)		160		210,385		(2,069	)		370
Corporate debt securities		4,015		(19	)		1		1,948		(40	)		1		5,963		(59	)		2
Total temporarily impaired securities	$	664,477	$	(7,159	)		312	$	787,063	$	(19,501	)		368	$	1,451,540	$	(26,660	)		680

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 substantially all debt securities are rated above 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, Cincinnati and Indianapolis stock totaling $53.8 million and $45.9 million at September 30, 2018 and December 31, 2017, 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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Loans and the Allowance for Credit Losses

9 Months Ended

Sep. 30, 2018

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, and discounts on purchased loans. The net deferred loan costs were $2.8 million and $1.6 million at September 30, 2018 and December 31, 2017, respectively. The unamortized discount on purchased portfolio loans from acquisitions was $54.3 million, including $6.7 million related to FTSB and $25.9 million related to FFKT, and $21.9 million at September 30, 2018 and December 31, 2017, respectively.

(unaudited, in thousands)	September 30, 2018		December 31, 2017
Commercial real estate:
Land and construction	$	538,922	$	392,597
Improved property		3,367,299		2,601,851
Total commercial real estate		3,906,221		2,994,448
Commercial and industrial		1,292,073		1,125,327
Residential real estate		1,598,477		1,353,301
Home equity		604,106		529,196
Consumer		325,546		339,169
Total portfolio loans		7,726,423		6,341,441
Loans held for sale		55,913		20,320
Total loans	$	7,782,336	$	6,361,761

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 Nine Months Ended September 30, 2018 and 2017
(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, 2017:
Allowance for loan losses	$	3,117		$	21,166		$	9,414		$	3,206		$	4,497		$	3,063		$	821		$	45,284
Allowance for loan commitments		119			26			173			7			212			37			—			574
Total beginning allowance for credit losses		3,236			21,192			9,587			3,213			4,709			3,100			821			45,858
Provision for credit losses:
Provision for loan losses		789			(721	)		2,538			1,106			(292	)		541			840			4,801
Provision for loan commitments		67			(3	)		32			2			9			3			—			110
Total provision for credit losses		856			(724	)		2,570			1,108			(283	)		544			840			4,911
Charge-offs		(137	)		(719	)		(871	)		(873	)		(745	)		(2,465	)		(941	)		(6,751	)
Recoveries		400			1,098			970			336			830			1,657			277			5,568
Net charge-offs		263			379			99			(537	)		85			(808	)		(664	)		(1,183	)
Balance at September 30, 2018:
Allowance for loan losses		4,169			20,824			12,051			3,775			4,290			2,796			997			48,902
Allowance for loan commitments		186			23			205			9			221			40			—			684
Total ending allowance for credit losses	$	4,355		$	20,847		$	12,256		$	3,784		$	4,511		$	2,836		$	997		$	49,586
Balance at December 31, 2016:
Allowance for loan losses	$	4,348		$	18,628		$	8,412		$	4,106		$	3,422		$	3,998		$	760		$	43,674
Allowance for loan commitments		151			17			188			9			162			44			—			571
Total beginning allowance for credit losses		4,499			18,645			8,600			4,115			3,584			4,042			760			44,245
Provision for credit losses:
Provision for loan losses		415			1,619			2,842			(203	)		1,259			922			680			7,534
Provision for loan commitments		(18	)		4			45			—			49			(4	)		—			76
Total provision for credit losses		397			1,623			2,887			(203	)		1,308			918			680			7,610
Charge-offs		—			(1,752	)		(2,255	)		(797	)		(372	)		(2,877	)		(947	)		(9,000	)
Recoveries		89			492			649			266			180			1,336			267			3,279
Net charge-offs		89			(1,260	)		(1,606	)		(531	)		(192	)		(1,541	)		(680	)		(5,721	)
Balance at September 30, 2017:
Allowance for loan losses		4,852			18,987			9,648			3,372			4,489			3,379			760			45,487
Allowance for loan commitments		133			21			233			9			211			40			—			647
Total ending allowance for credit losses	$	4,985		$	19,008		$	9,881		$	3,381		$	4,700		$	3,419		$	760		$	46,134

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		Deposit Over- draft		Total
September 30, 2018
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Allowance for loans collectively evaluated for impairment		4,169		20,824		12,051		3,775		4,290		2,796		997		48,902
Allowance for loan commitments		186		23		205		9		221		40		—		684
Total allowance for credit losses	$	4,355	$	20,847	$	12,256	$	3,784	$	4,511	$	2,836	$	997	$	49,586
Portfolio loans:
Individually evaluated for impairment(1)	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Collectively evaluated for impairment		537,699		3,361,315		1,291,296		1,595,547		604,106		325,419		—		7,715,382
Acquired with deteriorated credit quality		1,223		5,984		777		2,930		—		127		—		11,041
Total portfolio loans	$	538,922	$	3,367,299	$	1,292,073	$	1,598,477	$	604,106	$	325,546	$	—	$	7,726,423
December 31, 2017
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	388	$	—	$	—	$	—	$	—	$	—	$	388
Allowance for loans collectively evaluated for impairment		3,117		20,778		9,414		3,206		4,497		3,063		821		44,896
Allowance for loan commitments		119		26		173		7		212		37		—		574
Total allowance for credit losses	$	3,236	$	21,192	$	9,587	$	3,213	$	4,709	$	3,100	$	821	$	45,858
Portfolio loans:
Individually evaluated for impairment(1)	$	—	$	3,344	$	—	$	—	$	—	$	—	$	—	$	3,344
Collectively evaluated for impairment		391,140		2,593,393		1,124,544		1,352,587		529,196		339,163		—		6,330,023
Acquired with deteriorated credit quality		1,457		5,114		783		714		—		6		—		8,074
Total portfolio loans	$	392,597	$	2,601,851	$	1,125,327	$	1,353,301	$	529,196	$	339,169	$	—	$	6,341,441

⁽¹⁾  Commercial loans greater than $1 million that are reported as non-accrual or as a 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.

Commercial and industrial loans consist of revolving lines of credit to finance accounts receivable, inventory and other general business purposes; term loans to finance fixed assets other than real estate, and letters of credit to support trade, insurance or governmental requirements for a variety of businesses. Most C&I borrowers are privately-held companies with annual sales up to $100 million. 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 paragraphs provide descriptions of risk grades that are applicable 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 be inadequately protected 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:

	Commercial 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 September 30, 2018
Pass	$	533,982	$	3,314,324	$	1,272,181	$	5,120,487
Criticized—compromised		2,909		31,399		12,062		46,370
Classified—substandard		2,031		21,576		7,830		31,437
Classified—doubtful		—		—		—		—
Total	$	538,922	$	3,367,299	$	1,292,073	$	5,198,294
As of December 31, 2017
Pass	$	386,753	$	2,548,805	$	1,110,267	$	4,045,825
Criticized—compromised		2,984		25,673		7,435		36,092
Classified—substandard		2,860		27,373		7,625		37,858
Classified—doubtful		—		—		—		—
Total	$	392,597	$	2,601,851	$	1,125,327	$	4,119,775

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 was $20.6 million at September 30, 2018 and $22.8 million at December 31, 2017, of which $2.2 million and $2.5 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 FFKT Loans – In conjunction with the FFKT acquisition, WesBanco acquired loans with a book value of $1,064.8 million as of August 20, 2018. These loans were recorded at the preliminary fair value of $1,028.1 million, with $1,016.9 million categorized as ASC 310-20 loans. The fair market value adjustment on these loans of $26.4 million at the acquisition date is expected to be recognized into interest income on a level yield basis over the remaining expected life of the loans.

Loans acquired with deteriorated credit quality with a book value of $2.7 million were recorded at the preliminary fair value of $2.4 million, of which all were accounted for under the cost recovery method in accordance with ASC 310-30 as cash flows cannot be reasonably estimated, and categorized as non-accrual.

The carrying amount of loans acquired with deteriorated credit quality at September 30, 2018 was $2.1 million, while the outstanding customer balance was $2.4 million. At September 30, 2018 no allowance for loan losses has been recognized related to the acquired impaired loans.

Certain acquired underperforming loans with a book value of $45.2 million were transferred to loans held for sale prior to September 30, 2018 at the preliminary fair value of $35.2 million.

Acquired FTSB Loans – In conjunction with the FTSB acquisition, WesBanco acquired loans with a book value of $465.9 million as of April 5, 2018. These loans were recorded at the preliminary fair value of $448.1 million, with $440.1 million categorized as ASC 310-20 loans. The fair market value adjustment on these loans of $9.7 million at acquisition date is expected to be recognized into interest income on a level yield basis over the remaining expected life of the loans.

Loans acquired with deteriorated credit quality with a book value of $4.1 million were recorded at the preliminary fair value of $2.0 million, of which $0.7 million were accounted for under the cost recovery method in accordance with ASC 310-30 as cash flows cannot be reasonably estimated, and categorized as non-accrual.

The carrying amount of loans acquired with deteriorated credit quality at September 30, 2018 was $1.7 million, while the outstanding customer balance was $3.8 million. At September 30, 2018, no allowance for loan losses has been recognized related to the acquired impaired loans.

Certain acquired underperforming loans with a book value of $4.0 million were transferred to loans held for sale prior to September 30, 2018 at the preliminary fair value of $2.8 million.

Certain acquired underperforming loans with a book value of $17.7 million were sold in the second quarter of 2018 for $12.9 million. The acquisition date fair value of the acquired loans was adjusted to the sale price resulting in no gain or loss.

The following table provides changes in accretable yield for loans acquired with deteriorated credit quality:

	For the Nine Months Ended
(unaudited, in thousands)	September 30, 2018			September 30, 2017
Balance at beginning of period	$	1,724		$	1,717
Acquisitions		695			—
Reduction due to change in projected cash flows		(86	)		—
Reclass from non-accretable difference		6,287			1,490
Transfers out		—			(216	)
Accretion		(902	)		(1,384	)
Balance at end of period	$	7,718		$	1,607

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 September 30, 2018
Commercial real estate:
Land and construction	$	538,181	$	643	$	98	$	—	$	741	$	538,922	$	—
Improved property		3,357,883		1,657		352		7,407		9,416		3,367,299		88
Total commercial real estate		3,896,064		2,300		450		7,407		10,157		3,906,221		88
Commercial and industrial		1,287,693		776		462		3,142		4,380		1,292,073		114
Residential real estate		1,579,164		8,100		2,708		8,505		19,313		1,598,477		1,225
Home equity		596,477		2,871		1,002		3,756		7,629		604,106		646
Consumer		322,093		2,291		605		557		3,453		325,546		378
Total portfolio loans		7,681,491		16,338		5,227		23,367		44,932		7,726,423		2,451
Loans held for sale		55,913		—		—		—		—		55,913		—
Total loans	$	7,737,404	$	16,338	$	5,227	$	23,367	$	44,932	$	7,782,336	$	2,451
Impaired loans included above are as follows:
Non-accrual loans	$	7,480	$	1,653	$	1,225	$	20,916	$	23,794	$	31,274
TDRs accruing interest (1)		5,667		314		357		—		671		6,338
Total impaired	$	13,147	$	1,967	$	1,582	$	20,916	$	24,465	$	37,612
As of December 31, 2017
Commercial real estate:
Land and construction	$	392,189	$	—	$	172	$	236	$	408	$	392,597	$	—
Improved property		2,589,704		374		1,200		10,573		12,147		2,601,851		243
Total commercial real estate		2,981,893		374		1,372		10,809		12,555		2,994,448		243
Commercial and industrial		1,121,957		572		196		2,602		3,370		1,125,327		20
Residential real estate		1,338,240		4,487		2,376		8,198		15,061		1,353,301		1,113
Home equity		522,584		2,135		683		3,794		6,612		529,196		742
Consumer		334,723		2,466		842		1,138		4,446		339,169		608
Total portfolio loans		6,299,397		10,034		5,469		26,541		42,044		6,341,441		2,726
Loans held for sale		20,320		—		—		—		—		20,320		—
Total loans	$	6,319,717	$	10,034	$	5,469	$	26,541	$	42,044	$	6,361,761	$	2,726
Impaired loans included above are as follows:
Non-accrual loans	$	9,195	$	1,782	$	2,033	$	23,815	$	27,630	$	36,825
TDRs accruing interest (1)		6,055		348		168		—		516		6,571
Total impaired	$	15,250	$	2,130	$	2,201	$	23,815	$	28,146	$	43,396

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

The following tables summarize impaired loans:

	Impaired Loans
	September 30, 2018						December 31, 2017
(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	$	—	$		$	—	$	412	$	239	$	—
Improved property		14,639		9,928		—		18,229		12,863		—
Commercial and industrial		3,886		3,327		—		3,745		3,086		—
Residential real estate		21,226		18,944		—		20,821		18,982		—
Home equity		5,550		4,728		—		5,833		5,169		—
Consumer		857		685		—		1,084		952		—
Total impaired loans without a specific allowance		46,158		37,612		—		50,124		41,291		—
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—
Improved property		—		—		—		2,105		2,105		388
Commercial and industrial		—		—		—		—		—		—
Total impaired loans with a specific allowance		—		—		—		2,105		2,105		388
Total impaired loans	$	46,158	$	37,612	$	—	$	52,229	$	43,396	$	388

⁽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								For the Nine Months Ended
	September 30, 2018				September 30, 2017				September 30, 2018				September 30, 2017
(unaudited, in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	—	$	—	$	444	$	—	$	260	$	—	$	516	$	—
Improved Property		10,409		15		10,923		31		11,000		383		10,271		400
Commercial and industrial		3,181		5		3,588		2		2,985		9		3,700		6
Residential real estate		18,336		68		17,039		57		18,207		195		17,743		192
Home equity		4,924		8		4,727		4		4,997		19		4,456		14
Consumer		692		3		731		2		776		8		746		5
Total impaired loans without a specific allowance		37,542		99		37,452		96		38,225		614		37,432		617
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—		—		—
Improved Property		—		—		5,137		—		1,052		—		5,032		—
Commercial and industrial		—		—		—		—		—		—		318		—
Total impaired loans with a specific allowance		—		—		5,137		—		1,052		—		5,350		—
Total impaired loans	$	37,542	$	99	$	42,589	$	96	$	39,277	$	614	$	42,782	$	617

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

	Non-accrual Loans (1)
(unaudited, in thousands)	September 30, 2018		December 31, 2017
Commercial real estate:
Land and construction	$	—	$	239
Improved property		8,757		13,318
Total commercial real estate		8,757		13,557
Commercial and industrial		3,165		2,958
Residential real estate		14,475		14,661
Home equity		4,283		4,762
Consumer		594		887
Total	$	31,274	$	36,825

⁽¹⁾  At September 30, 2018, there was one borrower with a loan greater than $1.0 million totaling $3.4 million, as compared to three borrowers with loans greater than $1.0 million totaling $6.8 million at December 31, 2017. 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
	September 30, 2018						December 31, 2017
(unaudited, in thousands)	Accruing		Non-Accrual		Total		Accruing		Non-Accrual		Total
Commercial real estate:
Land and construction	$	—	$	—	$	—	$	—	$	3	$	3
Improved property		1,171		640		1,811		1,650		428		2,078
Total commercial real estate		1,171		640		1,811		1,650		431		2,081
Commercial and industrial		162		—		162		128		97		225
Residential real estate		4,469		1,182		5,651		4,321		1,880		6,201
Home equity		445		167		612		407		337		744
Consumer		91		47		138		65		120		185
Total	$	6,338	$	2,036	$	8,374	$	6,571	$	2,865	$	9,436

As of September 30, 2018 and December 31, 2017, there were no 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. WesBanco had unfunded commitments to debtors whose loans were classified as impaired of $0.2 million and $0.1 million as of September 30, 2018 and December 31, 2017, respectively.

The following tables present details related to loans identified as TDRs during the three and nine months ended September 30, 2018 and 2017, respectively:

	New TDRs (1)
	For the Three Months Ended
	September 30, 2018						September 30, 2017
(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		—	$	—	$	—		—	$	—	$	—
Improved Property		—		—		—		1		190		185
Total commercial real estate		—		—		—		1		190		185
Commercial and industrial		—		—		—		—		—		—
Residential real estate		—		—		—		—		—		—
Home equity		—		—		—		2		94		88
Consumer		1		19		18		1		7		6
Total		1	$	19	$	18		4	$	291	$	279

⁽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.

	New TDRs (1)
	For the Nine Months Ended
	September 30, 2018						September 30, 2017
(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		—	$	—	$	—		—	$	—	$	—
Improved Property		—		—		—		1		190		185
Total commercial real estate		—		—		—		1		190		185
Commercial and industrial		1		10		8		1		64		59
Residential real estate		5		203		176		2		22		17
Home equity		1		20		19		3		141		132
Consumer		4		65		52		4		42		33
Total		11	$	298	$	255		11	$	459	$	426

(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 nine months ended September 30, 2018 and 2017, respectively, that were restructured within the last twelve months prior to September, 2018 and 2017, respectively:

	Defaulted TDRs (1)
	For the Nine Months Ended
	September 30, 2018				September 30, 2017
(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		2		172		1		7
Home equity		1		6		—		—
Consumer		—		—		1		7
Total		3	$	178		2	$	14

⁽¹⁾ Excludes loans that were either charged-off or cured by period end. The recorded investment is as of September 30, 2018 and 2017, respectively.

TDRs that default are placed on non-accrual status unless they are both well-secured and in the process of collection. The loans in the table above were not accruing interest.

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

	September 30, 2018		December 31, 2017
(unaudited, in thousands)
Other real estate owned	$	6,836	$	5,195
Repossessed assets		41		102
Total other real estate owned and repossessed assets	$	6,877	$	5,297

Residential real estate included in other real estate owned at September 30, 2018 and December 31, 2017 was $0.7 million and $1.5 million, respectively. At September 30, 2018 and December 31, 2017, formal foreclosure proceedings were in process on residential real estate loans totaling $6.0 million and $3.5 million, respectively.

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Derivatives and Hedging Activities

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities

NOTE 6. DERIVATIVES AND HEDGING ACTIVITIES

Risk Management Objective of Using Derivatives

WesBanco is exposed to certain risks arising from both its business operations and economic conditions. WesBanco principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. WesBanco manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities. WesBanco’s existing interest rate derivatives result from a service provided to certain qualifying customers and, therefore, are not used to manage interest rate risk in WesBanco’s assets or liabilities. WesBanco manages a matched book with respect to its derivative instruments in order to minimize its net risk exposure resulting from such transactions. A matched book is when the Bank’s assets and liabilities are equally distributed but also have similar maturities.

Loan Swaps

WesBanco executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously economically hedged by offsetting interest rate swaps that WesBanco executes with a third party, such that WesBanco minimizes its net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements of ASC 815, changes in the fair value of both the customer swaps and the offsetting third-party swaps are recognized directly in earnings. As of September 30, 2018 and December 31, 2017, WesBanco had 42 and 39, respectively, interest rate swaps with an aggregate notional amount of $234.4 million and $298.2 million, respectively, related to this program. During the nine months ended September 30, 2018 and 2017, WesBanco recognized net losses of $0.1 million and $0.3 million, respectively, related to the changes in fair value of these swaps. Additionally, WesBanco recognized $1.4 million and $1.2 million of income for the related swap fees for the nine months ended September 30, 2018 and 2017, respectively.

Mortgage Loans Held for Sale and Loan Commitments

Certain residential mortgage loans are originated for sale in the secondary mortgage loan market. These loans are classified as held for sale and carried at fair value as WesBanco has elected the fair value option. Fair value is determined based on rates obtained from the secondary market for loans with similar characteristics. WesBanco sells loans to the secondary market on a mandatory or best efforts basis. The loans sold on a mandatory basis are not committed to an investor until the loan is closed with the borrower. WesBanco enters into forward TBA contracts to manage the interest rate risk between the loan commitment and the closing of the loan. The loans sold on a best efforts basis are committed to an investor simultaneous to the interest rate commitment with the borrower.

Fair Values of Derivative Instruments on the Balance Sheet

All derivatives are carried on the consolidated balance sheet at fair value. Derivative assets are classified in the consolidated balance sheet under other assets, and derivative liabilities are classified in the consolidated balance sheet under other liabilities. Changes in fair value are recognized in earnings. None of WesBanco’s derivatives are designated in qualifying hedging relationships under ASC 815.

The table below presents the fair value of WesBanco’s derivative financial instruments as well as their classification on the Balance Sheet as of September 30, 2018 and December 31, 2017:

	September 30, 2018						December 31, 2017
(unaudited, in thousands)	Notional or Contractual Amount		Asset Derivatives		Liability Derivatives		Notional or Contractual Amount		Asset Derivatives		Liability Derivatives
Derivatives
Loan Swaps:
Interest rate swaps	$	234,363	$	6,451	$	6,527	$	298,223	$	7,351	$	7,345
Other contracts:
Interest rate loan commitments		27,795		32		—		20,319		49		—
Forward TBA contracts		32,000		148		—		31,750		—		23
Total derivatives			$	6,631	$	6,527			$	7,400	$	7,368

Effect of Derivative Instruments on the Income Statement

The table below presents the change in the fair value of the Company’s derivative financial instruments reflected within the other non-interest income line item of the consolidated income statement for the three and nine months ended September 30, 2018 and 2017, respectively.

		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	Location of Gain/(Loss)	2018			2017			2018			2017
Interest rate swaps	Other income	$	(293	)	$	(32	)	$	(82	)	$	(335	)
Interest rate loan commitments	Mortgage banking income		(111	)		—			32			123
Forward TBA contracts	Mortgage banking income		131			—			530			—
Total		$	(273	)	$	(32	)	$	480		$	(212	)

Credit-risk-related Contingent Features

WesBanco has agreements with its derivative counterparties that contain a provision where if WesBanco defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then WesBanco could also be declared in default on its derivative obligations.

WesBanco also has agreements with certain of its derivative counterparties that contain a provision where if WesBanco fails to maintain its status as either a well or adequately capitalized institution, then the counterparty could terminate the derivative positions and WesBanco would be required to settle its obligations under the agreements.

WesBanco has minimum collateral posting thresholds with certain of its derivative counterparties and has posted collateral with a market value of $3.7 million as of September 30, 2018. If WesBanco had breached any of these provisions at September 30, 2018, it could have been required to settle its obligations under the agreements at the termination value and would have been required to pay any additional amounts due in excess of amounts previously posted as collateral with the respective counterparty.

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Pension Plan

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

Pension Plan

NOTE 7. 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 September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	2018			2017			2018			2017
Service cost – benefits earned during year	$	715		$	650		$	2,121		$	1,929
Interest cost on projected benefit obligation		1,242			1,107			3,684			3,287
Expected return on plan assets		(2,416	)		(1,928	)		(7,169	)		(5,721	)
Amortization of prior service cost		6			7			19			19
Amortization of net loss		766			812			2,274			2,409
Net periodic pension cost	$	313		$	648		$	929		$	1,923

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 $5.1 million is due for 2018, which could be all or partially offset by the Plan’s $56.9 million available credit balance. WesBanco made a voluntary contribution of $2.5 million to the Plan in June 2018.

WesBanco assumed YCB’s obligation for a predecessor bank’s participation in a defined benefit plan. The net periodic pension income for this plan for the three and nine months ended September 30, 2018 was $0.1 million and $0.2 million, respectively, which was comprised of a $0.2 million and a $0.5 million expected return on plan assets and net actuarial gain, partially offset by a $0.1 million and a $0.3 million interest cost on projected benefit obligation for the three and nine months ended September 30, 2018, respectively.

No minimum contribution is due for this plan for fiscal year 2018; however, WesBanco made a voluntary contribution of $0.2 million to this plan in June 2018.

WesBanco assumed FFKT’s postretirement medical benefit plan, which had a liability totaling $15.0 million at the acquisition date. The plan covers FFKT employees who were hired before January 1, 2016 and meet certain age and length of full-time service requirements. The plan was modified in August 2018, which reduced the number of eligible employees. The modification resulted in a $5.5 million unrealized gain, which was recorded in Accumulated Other Comprehensive Income net of tax and will be recognized over the life of the plan participants estimated to be approximately 17 years. The modification reduced the plan liability to $9.5 million as of September 30, 2018.

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Fair Value Measurement

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurement

NOTE 8. 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:

Investment securities: The fair value of investment securities 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. 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.

Derivatives: WesBanco enters into interest rate swap agreements with qualifying commercial customers to meet their financing, interest rate and other risk management needs. These agreements provide the customer the ability to convert from variable to fixed interest rates. The credit risk associated with derivatives executed with customers is essentially the same as that involved in extending loans and is subject to normal credit policies and monitoring. Those interest rate swaps are economically hedged by offsetting interest rate swaps that WesBanco executes with derivative counterparties in order to offset its exposure on the fixed components of the customer interest rate swap agreements. The interest rate swap agreement with the loan customer and with the counterparty is reported at fair value in other assets and other liabilities on the consolidated balance sheet with any resulting gain or loss recorded in current period earnings as other income and other expense.

WesBanco enters into forward TBA contracts to manage the interest rate risk between the loan commitments to the customer and the closing of the loan for loans that will be sold on a mandatory basis to secondary market investors. The forward TBA contract is reported at fair value in other assets and other liabilities on the consolidated balance sheet with any resulting gain or loss recorded in current period’s earnings as mortgage banking income.

WesBanco determines the fair value for derivatives using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects contractual terms of the derivative, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. WesBanco incorporates credit valuation adjustments to appropriately reflect both its own non-performance risk and the respective counterparty’s non-performance risk in the fair value measurements.

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

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 fair value as WesBanco has elected the fair value option as of October 1, 2017. 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.

Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in the table below are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. 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 September 30, 2018 and December 31, 2017:

			September 30, 2018
			Fair Value Measurements Using:
(unaudited, in thousands)	September 30, 2018		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)		Investments Measured at Net Asset Value
Recurring fair value measurements
Equity securities	$	12,784	$	12,784	$	—	$	—	$	—
Debt securities—available-for-sale
U.S. Treasury		9,937		—		9,937		—		—
U.S. Government sponsored entities and agencies		149,949		—		149,949		—		—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,449,754		—		1,449,754		—		—
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		168,761		—		168,761		—		—
Obligations of state and political subdivisions		186,651		—		185,125		1,526		—
Corporate debt securities		43,180		—		43,180		—		—
Total debt securities—available-for-sale	$	2,008,232	$	—	$	2,006,706	$	1,526	$	—
Loans held for sale		55,913		—		55,913		—		—
Other assets—interest rate derivatives agreements		6,451		—		6,451		—		—
Total assets recurring fair value measurements	$	2,083,380	$	12,784	$	2,069,070	$	1,526	$	—
Other liabilities—interest rate derivatives agreements	$	6,527	$	—	$	6,527	$	—	$	—
Total liabilities recurring fair value measurements	$	6,527	$	—	$	6,527	$	—	$	—
Nonrecurring fair value measurements
Impaired loans	$	—	$	—	$	—	$	—	$	—
Other real estate owned and repossessed assets		6,877		—		—		6,877		—
Total nonrecurring fair value measurements	$	6,877	$	—	$	—	$	6,877	$	—

			December 31, 2017
			Fair Value Measurements Using:
(unaudited, in thousands)	December 31, 2017		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)		Investments Measured at Net Asset Value
Recurring fair value measurements
Equity securities	$	13,457	$	11,391	$	—	$	—	$	2,066
Debt securities—available-for-sale
U.S. Government sponsored entities and agencies		71,843		—		71,843		—		—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		934,922		—		934,922		—		—
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		114,867		—		114,867		—		—
Obligations of state and political subdivisions		104,830		—		104,830		—		—
Corporate debt securities		35,403		—		35,403		—		—
Total debt securities—available-for-sale	$	1,261,865	$	—	$	1,261,865	$	—	$	—
Loans held for sale		20,320		—		20,320		—		—
Other assets—interest rate derivatives agreements		7,351		—		7,351		—		—
Total assets recurring fair value measurements	$	1,302,993	$	11,391	$	1,289,536	$	—	$	2,066
Other liabilities—interest rate derivatives agreements	$	7,345	$	—	$	7,345	$	—	$	—
Total liabilities recurring fair value measurements	$	7,345	$	—	$	7,345	$	—	$	—
Nonrecurring fair value measurements
Impaired loans	$	1,717	$	—	$	—	$	1,717	$	—
Other real estate owned and repossessed assets		5,297		—		—		5,297		—
Total nonrecurring fair value measurements	$	7,014	$	—	$	—	$	7,014	$	—

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 significant transfers between level 1, 2 or 3 for the three and nine months ended September 30, 2018 or for the year ended December 31, 2017.

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)
September 30, 2018
Impaired loans	$	—		Appraisal of collateral	(1)		Appraisal adjustments	(2)		—
							Liquidation expenses	(2)		—
Other real estate owned and repossessed assets		6,877		Appraisal of collateral	(1), (3)
December 31, 2017:
Impaired loans	$	1,717		Appraisal of collateral	(1)		Appraisal adjustments	(2)		(4.8%) / (4.8	%)
							Liquidation expenses	(2)		(7.6%) / (7.6	%)
Other real estate owned and repossessed assets		5,297		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
					September 30, 2018
(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)		Investments Measured at Net Asset Value
Financial Assets
Cash and due from banks	$	273,680	$	273,680	$	273,680	$	—	$	—	$	—
Equity securities		12,784		12,784		12,784		—		—		—
Debt securities available-for-sale		2,008,232		2,008,232		—		2,006,706		1,526		—
Debt securities held-to-maturity		1,025,538		1,014,361		—		1,013,788		573		—
Net loans		7,677,521		7,517,958		—		—		7,517,958		—
Loans held for sale		55,913		55,913		—		55,913		—		—
Other assets—interest rate derivatives		6,451		6,451		—		6,451		—		—
Accrued interest receivable		39,465		39,465		39,465		—		—		—
Financial Liabilities
Deposits		8,941,758		8,960,221		7,428,158		1,532,063		—		—
Federal Home Loan Bank borrowings		1,131,253		1,123,441		—		1,123,441		—		—
Other borrowings		294,281		294,285		292,290		1,995		—		—
Subordinated debt and junior subordinated debt		189,745		179,497		—		179,497		—		—
Other liabilities—interest rate derivatives		6,527		6,527		—		6,527		—		—
Accrued interest payable		6,623		6,623		6,623		—		—		—
					Fair Value Measurements at
					December 31, 2017
(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)		Investments Measured at Net Asset Value
Financial Assets
Cash and due from banks	$	117,572	$	117,572	$	117,572	$	—	$	—	$	—
Equity securities		13,457		13,457		11,391		—		—		2,066
Debt securities available-for-sale		1,261,865		1,261,865		—		1,261,865		—		—
Debt securities held-to-maturity		1,009,500		1,023,784		—		1,023,191		593		—
Net loans		6,296,157		6,212,823		—		—		6,212,823		—
Loans held for sale		20,320		20,320		—		20,320		—		—
Other assets—interest rate derivatives		7,351		7,351		—		7,351		—		—
Accrued interest receivable		29,728		29,728		29,728		—		—		—
Financial Liabilities
Deposits		7,043,588		7,053,536		5,766,531		1,287,005		—		—
Federal Home Loan Bank borrowings		948,203		944,706		—		944,706		—		—
Other borrowings		184,805		184,814		182,785		2,029		—		—
Subordinated debt and junior subordinated debt		164,327		146,484		—		146,484		—		—
Other liabilities—interest rate derivatives		7,345		7,345		—		7,345		—		—
Accrued interest payable		3,178		3,178		3,178		—		—		—

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.

Debt securities held-to-maturity: Fair values for debt securities held-to-maturity are determined in the same manner as the investment securities, which are 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. WesBanco believes the discount rates are consistent with transactions occurring in the marketplace for both performing and distressed loan types. The carrying value 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.

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.

Subordinated debt and junior subordinated debt: The fair value of subordinated debt is estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements. Due to the pooled nature of junior subordinated debt owed to unconsolidated subsidiary trusts, 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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Revenue Recognition

9 Months Ended

Sep. 30, 2018

Text Block [Abstract]

Revenue Recognition

NOTE 9. REVENUE RECOGNITION

WesBanco adopted ASU 2014-09 as of January 1, 2018 under the modified retrospective approach and there was no material impact on WesBanco’s Consolidated Financial statements. Interest income, net securities (losses) gains and bank-owned life insurance are not in scope of ASC 606. For the revenue streams in scope of ASC 606, including trust fees, service charges on deposits, electronic banking fees, allotment fees, net securities brokerage revenue, mortgage banking income and net gain or loss on sale of other real estate owned, there are no significant judgements related to the amount and timing of revenue recognition.

Trust fees: Fees are earned over a period of time between monthly and annually, per the related fee schedule. The fees are earned ratably over the period for investment, safekeeping and other services performed by WesBanco. The fees are accrued when earned based on the daily asset value on the last day of the quarter. In most cases, the fees are directly debited from the customer account.

Service charges on deposits: There are monthly service charges for both commercial and personal banking customers, which are earned over the month per the related fee schedule based on the customers’ deposits. There are also transaction-based fees, which are earned based on specific transactions or customer activity within the customers’ deposit accounts. These are earned at the time the transaction or customer activity occurs. The fees are debited from the customer account.

Allotment fees: Allotment fees are processing fees earned from the bill payment and electronic funds transfer (“EFT”) services provided under the name FirstNet. The fees are derived from both the individual consumer banking transactions and from businesses or service providers through monthly billing for total transactions occurring. These fees are earned at the time the transaction or customer activity occurs. The fees are debited from the customers’ and the business’s deposit accounts.

Electronic banking fees: Interchange and ATM fees are earned based on customer and ATM transactions. Revenue is recognized when the transaction is settled.

Net securities brokerage revenue: Commission income is earned based on customer transactions and management of investments. The commission income from customers’ transactions is recognized when the transaction is complete. The commission income from the management of investments is earned continuously over a quarterly period.

Mortgage banking income: Income is earned when WesBanco-originated loans are sold to an investor on the secondary market. The investor bids on the loans. If the price is accepted, WesBanco delivers the loan documents to the investor. Once received and approved by the investor, revenue is recognized and the loans are derecognized from the Consolidated Balance Sheet. Prior to the loans being sold, they are classified as loans held for sale. Additionally, the changes in the fair value of the loans held for sale, loan commitments and related derivatives are included in mortgage banking income.

Net gain or loss on sale of other real estate owned: Net gain or loss is recorded when other real estate is sold to a third party and the Bank collects substantially all of the consideration to which WesBanco is entitled in exchange for the transfer of the property.

The following table summarizes the point of revenue recognition and the income recognized for each of the revenue streams for the three and nine months ended September 30, 2018:

(unaudited, in thousands)	Point of Revenue Recognition	For the Three Months Ended September 30, 2018		For the Nine Months Ended September 30, 2018
Revenue Streams
Trust fees
Trust account fees	Over time	$	4,006	$	11,856
WesMark fees	Over time		2,259		6,664
Total trust fees			6,265		18,520
Service charges on deposits
Commercial banking fees	Over time		563		1,406
Personal service charges	At a point in time & over time		5,750		14,876
Total service charges on deposits			6,313		16,282
Net securities brokerage revenue
Annuity commissions	At a point in time		1,326		3,836
Equity and debt security trades	At a point in time		116		304
Managed money	Over time		173		477
Trail commissions	Over time		221		698
Total net securities brokerage revenue			1,836		5,315
Allotment fees (1)	At a point in time & over time		311		311
Electronic banking fees	At a point in time		6,139		16,697
Mortgage banking income	At a point in time		1,521		4,297
Net gain or loss on sale of other real estate owned	At a point in time		150		641

(1) Allotment fees are included in other non-interest income.

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Comprehensive Income/(Loss)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Comprehensive Income/(Loss)

NOTE 10. COMPREHENSIVE INCOME/(LOSS)

The activity in accumulated other comprehensive income for the nine months ended September 30, 2018 and 2017 is as follows:

	Accumulated Other Comprehensive Income/(Loss) (1)
(unaudited, in thousands)	Defined Benefit Plans			Unrealized Gains (Losses) on Debt  Securities Available-for-Sale			Unrealized Gains on Debt Securities Transferred from Available-for-Sale to Held-to-Maturity			Total
Balance at December 31, 2017	$	(18,626	)	$	(13,250	)	$	381		$	(31,495	)
Other comprehensive income before reclassifications		—			(33,013	)		—			(33,013	)
Acquired FFKT Medical benefit plan		4,235			—			—			4,235
Amounts reclassified from accumulated other comprehensive income		1,621			(9	)		(149	)		1,463
Period change		5,856			(33,022	)		(149	)		(27,315	)
Adoption of Accounting Standard ASU 2016-01 (2)		—			(1,063	)		—			(1,063	)
Balance at September 30, 2018	$	(12,770	)	$	(47,335	)	$	232		$	(59,873	)
Balance at December 31, 2016	$	(17,758	)	$	(9,890	)	$	522		$	(27,126	)
Other comprehensive income before reclassifications		—			4,740			—			4,740
Amounts reclassified from accumulated other comprehensive income		1,679			35			(165	)		1,549
Period change		1,679			4,775			(165	)		6,289
Balance at September 30, 2017	$	(16,079	)	$	(5,115	)	$	357		$	(20,837	)

⁽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 23% in 2018 and 37% in all prior periods.

⁽²⁾  See Note 1, Summary of Significant Accounting Policies for additional information about WesBanco’s adoption of ASU 2016-01.

The following table provides details about amounts reclassified from accumulated other comprehensive income for the three and nine months ended September 30, 2018 and 2017, respectively:

Details about Accumulated Other Comprehensive Income Components (unaudited, in thousands)	For the Three Months Ended September 30,						For the Nine Months Ended September 30,						Affected Line Item in the Statement of Net Income
	2018			2017			2018			2017
Securities available-for-sale (1):
Net securities gains/losses reclassified into earnings	$	(11	)	$	—		$	(11	)	$	55		Net securities gains (Non-interest income)
Related income tax benefit		2			—			2			(20	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(9	)		—			(9	)		35
Securities held-to-maturity (1):
Amortization of unrealized gain transferred from available-for-sale		(64	)		(66	)		(195	)		(256	)	Interest and dividends on securities (Interest and dividend income)
Related income tax expense		15			24			46			91		Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(49	)		(42	)		(149	)		(165	)
Defined benefit plans (2):
Amortization of net loss and prior service costs		772			816			2,293			2,429		Employee benefits (Non-interest expense)
Related income tax benefit		(177	)		(303	)		(672	)		(750	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		595			513			1,621			1,679
Total reclassifications for the period	$	537		$	471		$	1,463		$	1,549

⁽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 7, “Pension and Other Post Retirement Benefits” for additional detail.

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Commitments and Contingent Liabilities

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingent Liabilities

NOTE 11. 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 $0.7 million and $0.6 million as of September 30, 2018 and December 31, 2017, 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 both September 30, 2018 and December 31, 2017.

Contingent obligations and other guarantees include affordable housing plan guarantees, credit card guarantees and obligations under the FHLB’s loan purchasing program. 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 mortgages sold to FHLB obligate WesBanco to reimburse the FHLB for a portion of any loan balances that default.

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

(unaudited, in thousands)	September 30, 2018		December 31, 2017
Lines of credit	$	1,855,388	$	1,452,697
Loans approved but not closed		349,173		245,644
Overdraft limits		154,221		126,671
Letters of credit		41,515		31,951
Contingent obligations and other guarantees		5,725		6,700

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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Business Segments

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Business Segments

NOTE 12. 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 $4.7 billion and $3.9 billion at September 30, 2018 and 2017, 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 September 30, 2018:
Interest income	$	108,393	$	—	$	108,393
Interest expense		18,460		—		18,460
Net interest income		89,933		—		89,933
Provision for credit losses		1,035		—		1,035
Net interest income after provision for credit losses		88,898		—		88,898
Non-interest income		19,959		6,265		26,224
Non-interest expense		72,378		3,742		76,120
Income before provision for income taxes		36,479		2,523		39,002
Provision for income taxes		5,986		530		6,516
Net income	$	30,493	$	1,993	$	32,486
For the Three Months ended September 30, 2017:
Interest income	$	85,489	$	—	$	85,489
Interest expense		11,235		—		11,235
Net interest income		74,254		—		74,254
Provision for credit losses		2,516		—		2,516
Net interest income after provision for credit losses		71,738		—		71,738
Non-interest income		15,541		5,358		20,899
Non-interest expense		52,355		3,399		55,754
Income before provision for income taxes		34,924		1,959		36,883
Provision for income taxes		9,744		783		10,527
Net income	$	25,180	$	1,176	$	26,356
For the Nine Months ended September 30, 2018:
Interest income	$	293,596	$	—	$	293,596
Interest expense		48,127		—		48,127
Net interest income		245,469		—		245,469
Provision for credit losses		4,911		—		4,911
Net interest income after provision for credit losses		240,558		—		240,558
Non-interest income		55,195		18,520		73,715
Non-interest expense		183,298		10,936		194,234
Income before provision for income taxes		112,455		7,584		120,039
Provision for income taxes		19,262		1,593		20,855
Net income	$	93,193	$	5,991	$	99,184
For the Nine Months ended September 30, 2017:
Interest income	$	247,573	$	—	$	247,573
Interest expense		30,461		—		30,461
Net interest income		217,112		—		217,112
Provision for credit losses		7,610		—		7,610
Net interest income after provision for credit losses		209,502		—		209,502
Non-interest income		48,833		17,073		65,906
Non-interest expense		156,102		9,921		166,023
Income before provision for income taxes		102,233		7,152		109,385
Provision for income taxes		27,940		2,861		30,801
Net income	$	74,293	$	4,291	$	78,584

Total non-fiduciary assets of the trust and investment services segment were $5.1 million and $1.7 million at September 30, 2018 and 2017, respectively. All other assets, including goodwill and other intangible assets, were allocated to the community banking segment.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2018

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, 2017.

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 2017 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. Certain prior period amounts have been reclassified to conform to the current period presentation. Such reclassifications had no impact on WesBanco’s net income and stockholders’ equity. 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 August 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-15, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract.” This ASU specifically aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. The ASU does not affect the accounting for the service element of a hosting arrangement that is a service contract. The guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2018-15 on WesBanco’s Consolidated Financial Statements.

In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans.” This ASU modifies ASC 715-20 to improve disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The guidance is effective for fiscal years ending after December 15, 2020. Early adoption is permitted. WesBanco is currently assessing the impact of ASU 2018-14 on WesBanco’s Consolidated Financial Statements.

In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement – Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement.” This ASU modifies the disclosure objective paragraphs of ASC 820 to eliminate (1) “at a minimum” from the phrase “an entity shall disclose at a minimum” and (2) other similar “open ended” disclosure requirements to promote the appropriate exercise of discretion of entities. The guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2018-13 on WesBanco’s Consolidated Financial Statements.

In August 2017, the FASB issued ASU 2017-12, “Targeted Improvements to Accounting for Hedging Activities.” The new guidance will make more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amends the presentation and disclosure requirements and changes how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. WesBanco is currently assessing the impact of ASU 2017-12 on WesBanco’s Consolidated Financial Statements.

In March 2017, the FASB issued ASU 2017-07 that changes how an employer presents the net periodic benefit cost in the income statement for an employer-sponsored defined benefit pension and/or other postretirement benefit plans. Employers will present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit cost separately from the line items that includes the service cost outside of any subtotal of operating income, if one is presented. These components will not be eligible for capitalization in assets. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual period (i.e., only in the first interim period). For WesBanco, this update was effective for the fiscal year beginning January 1, 2018. Upon adoption, WesBanco reclassified the service cost component from employee benefits to salaries and wages, which are both components of non-interest expense. The service cost component for the three and nine months ended September 30, 2018 was $0.7 and $2.1 million, respectively.

In January 2017, the FASB issued ASU 2017-01, which clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In October 2016, the FASB issued ASU 2016-16 that provides the recognition of income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Current guidance prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party. This prohibition on recognition is an exception to the principle of comprehensive recognition of current and deferred income taxes in generally accepted accounting principles. The exception has led to diversity in practice and is a source of complexity in financial reporting. FASB decided that an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Consequently, the amendments in this update eliminate the exception for an intra-entity transfer of an asset other than inventory. The amendments in this update do not include new disclosure requirements; however, existing disclosure requirements might be applicable when accounting for the current and deferred income taxes for an intra-entity transfer of an asset other than inventory. For public business entities, the amendments in this update are effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The amendments in this update were to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15 that provides guidance for the classification of cash flows related to (1) debt prepayment or extinguishment costs, (2) settlement of zero-coupon debt instruments or other debt instruments with coupon rates that are insignificant in relation to the effective interest rate on the borrowing, (3) contingent consideration payments made after a business combination, (4) proceeds from the settlement of insurance claims, (5) proceeds from the settlement of corporate-owned life insurance policies, (6) distributions received from equity method investees, (7) beneficial interests in securitization transactions and (8) separately identifiable cash flows and application of the predominance principle. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years, which for WesBanco was effective for the fiscal year beginning January 1, 2018. The adoption of this pronouncement did not have a material impact on WesBanco’s Consolidated Financial Statements.

In September 2016, the FASB issued ASU 2016-13 that will require entities to use a new forward-looking “expected loss” model on trade and other receivables, held-to-maturity debt securities, loans and other instruments that generally will result in the earlier recognition of allowances for credit losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. Entities will have to disclose significantly more information, including information they use to track credit quality by year of origination for most financing receivables. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, which for WesBanco will be effective for the fiscal year beginning January 1, 2020. Early adoption is permitted for fiscal years beginning after December 15, 2018. WesBanco has completed an initial data gap assessment, is currently finalizing the loan segmentation procedures and evaluating the various forecasting and modeling assumptions that will be used to estimate the initial current expected credit loss allowance.

In February 2016, the FASB issued ASU 2016-02 that will require entities to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. The principal difference from previous guidance is that the lease assets and lease liabilities arising from operating leases were not previously recognized in the balance sheet. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. In January 2018, the FASB issued ASU 2018-01, which allows entities the option to apply the provisions of the new lease guidance at the effective date without adjusting the comparative periods presented. In July 2018, the FASB issued ASU 2018-10, which provides narrow-scope improvements to the lease standard. While we are currently assessing the impact of the adoption of this pronouncement, we expect the primary impact to our consolidated financial position upon adoption will be the recognition, on a discounted basis, of our minimum commitments under non-cancellable operating leases on our Consolidated Balance Sheets resulting in the recording of right of use assets and lease obligations, which are expected to total approximately $15 million to $20 million. The estimate could change based on new leases entered into or amended before January 1, 2019.

In January 2016, the FASB issued ASU 2016-01 that will require entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income unless the investments qualify for the new practicability exception. The standard does not change the guidance for classifying and measuring investments in debt securities and loans. Entities will have to record changes in instrument-specific credit risk for financial liabilities measured under the fair value option in other comprehensive income. Public business entities must apply the new requirements for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. In February 2018, the FASB issued ASU 2018-03, which clarifies certain aspects of the guidance issued in ASU 2016-01. WesBanco adopted these pronouncements as of January 1, 2018 and recognized a $1.1 million adjustment to retained earnings upon adoption of this pronouncement. In addition, WesBanco reclassified investment securities on the Consolidated Financial Statements into the following – equity securities, available-for-sale debt securities and held-to-maturity debt securities.

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. On July 9, 2015, the FASB approved a one-year deferral of the effective date of the update. The update is effective for interim and annual reporting periods in fiscal years beginning after December 15, 2017. In March 2016, the FASB issued ASU 2016-08, which amends the principle versus agent guidance in the revenue standard. In April 2016, the FASB issued ASU 2016-10, which clarifies when promised goods or services are separately identifiable in the revenue standard. In May 2016, FASB issued ASU 2016-12, which provides narrow-scope improvements and practical expedients to the revenue standard. WesBanco adopted these pronouncements as of January 1, 2018 using the modified retrospective approach. WesBanco noted no material change to the timing of revenue recognition and there was no material impact on WesBanco’s Consolidated Financial Statements. See Note 9, “Revenue Recognition” for further discussion on revenue within the scope of ASC 606.

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Mergers and Acquisitions (Tables)

9 Months Ended

Sep. 30, 2018

First Sentry Bancshares, Inc. [Member]

Summary of Preliminary Purchase Price of Acquisition and Resulting Goodwill

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

(unaudited, in thousands)	April 5, 2018
Purchase Price:
Fair value of WesBanco shares issued	$	107,347
Cash consideration for outstanding FTSB shares		975
Total purchase price	$	108,322
Fair value of:
Tangible assets acquired	$	610,443
Core deposit and other intangible assets acquired		8,078
Liabilities assumed		(664,172	)
Net cash received in the acquisition		87,124
Fair value of net assets acquired		41,473
Goodwill recognized	$	66,849

Allocation of Purchase Price of Assets Acquired and Liabilities Assumed

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 FTSB within one year from the date of acquisition:

(unaudited, in thousands)	April 5, 2018
Assets acquired
Cash and due from banks	$	87,124
Securities		142,903
Loans		448,075
Goodwill and other intangible assets		74,927
Accrued income and other assets		19,465
Total assets acquired	$	772,494
Liabilities assumed
Deposits	$	590,065
Borrowings		70,710
Accrued expenses and other liabilities		3,397
Total liabilities assumed	$	664,172
Net assets acquired	$	108,322

Purchase Price Allocation Adjustment [Member]

Allocation of Purchase Price of Assets Acquired and Liabilities Assumed

The following table presents the changes in the allocation of the purchase price of the assets acquired and the liabilities assumed at the date of the acquisition previously reported as of June 30, 2018:

(unaudited, in thousands)	April 5, 2018
Goodwill recognized as of June 30, 2018	$	66,219
Change in fair value of net assets acquired:
Assets
Loans		(264	)
Other intangible assets		(159	)
Accrued income and other assets		(6	)
Liabilities
Deposits		(47	)
Accrued expenses and other liabilities		(154	)
Fair value of net assets acquired	$	(630	)
Increase in goodwill recognized		630
Goodwill recognized as of September 30, 2018	$	66,849

Farmers Capital Bank Corporation [Member]

Summary of Preliminary Purchase Price of Acquisition and Resulting Goodwill

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

(unaudited, in thousands)	August 20, 2018
Purchase Price:
Fair value of WesBanco shares issued	$	391,267
Cash consideration for outstanding FFKT shares		37,634
Total purchase price	$	428,901
Fair value of:
Tangible assets acquired	$	1,360,951
Core deposit and other intangible assets acquired		42,593
Liabilities assumed		(1,429,874	)
Net cash received in the acquisition		230,139
Fair value of net assets acquired		203,809
Goodwill recognized	$	225,092

Allocation of Purchase Price of Assets Acquired and Liabilities Assumed

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 FFKT within one year from the date of acquisition:

(unaudited, in thousands)	August 20, 2018
Assets acquired
Cash and due from banks	$	230,139
Securities		239,321
Loans		1,028,120
Goodwill and other intangible assets		267,685
Accrued income and other assets		93,510
Total assets acquired	$	1,858,775
Liabilities assumed
Deposits	$	1,330,328
Borrowings		71,780
Accrued expenses and other liabilities		27,766
Total liabilities assumed	$	1,429,874
Net assets acquired	$	428,901

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Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Summary of Earnings Per Common Share

Earnings per common share are calculated as follows:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(unaudited, in thousands, except shares and per share amounts)	2018		2017		2018		2017
Numerator for both basic and diluted earnings per common share:
Net income	$	32,486	$	26,356	$	99,184	$	78,584
Denominator:
Total average basic common shares outstanding		50,277,847		44,031,813		46,965,095		43,992,017
Effect of dilutive stock options and other stock compensation		154,265		55,068		142,734		67,452
Total diluted average common shares outstanding		50,432,112		44,086,881		47,107,829		44,059,469
Earnings per common share—basic	$	0.65	$	0.60	$	2.11	$	1.79
Earnings per common share—diluted	$	0.64	$	0.60	$	2.11	$	1.78

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Securities (Tables)

9 Months Ended

Sep. 30, 2018

Investments, Debt and Equity Securities [Abstract]

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

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

	September 30, 2018									December 31, 2017
(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 debt securities
U.S. Treasury	$	9,952	$	—	$	(15	)	$	9,937	$	—	$	—	$	—		$	—
U.S. Government sponsored entities and agencies		154,054		17		(4,122	)		149,949		72,425		24		(606	)		71,843
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		1,500,563		44		(50,853	)		1,449,754		954,115		214		(19,407	)		934,922
Commerical mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		174,331		15		(5,585	)		168,761		116,448		4		(1,585	)		114,867
Obligations of states and political subdivisions		187,501		1,445		(2,295	)		186,651		102,363		2,927		(460	)		104,830
Corporate debt securities		43,259		160		(239	)		43,180		35,234		228		(59	)		35,403
Total available-for-sale debt securities	$	2,069,660	$	1,681	$	(63,109	)	$	2,008,232	$	1,280,585	$	3,397	$	(22,117	)	$	1,261,865
Held-to-maturity debt securities
U.S. Government sponsored entities and agencies	$	11,699	$	—	$	(615	)	$	11,084	$	11,465	$	—	$	(325	)	$	11,140
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		154,018		103		(6,788	)		147,333		170,025		544		(2,609	)		167,960
Obligations of states and political subdivisions		826,514		6,434		(9,743	)		823,205		794,655		17,364		(1,609	)		810,410
Corporate debt securities		33,307		5		(573	)		32,739		33,355		919		—			34,274
Total held-to-maturity debt securities	$	1,025,538	$	6,542	$	(17,719	)	$	1,014,361	$	1,009,500	$	18,827	$	(4,543	)	$	1,023,784
Total debt securities	$	3,095,198	$	8,223	$	(80,828	)	$	3,022,593	$	2,290,085	$	22,224	$	(26,660	)	$	2,285,649

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

The following table presents the fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at September 30, 2018. In some instances, the issuers may have the right to call or prepay obligations without penalty prior to the contractual maturity date.

	September 30, 2018
(unaudited, in thousands)	One Year or less		One to Five Years		Five to Ten Years		After Ten Years		Mortgage-backed securities		Total
Available-for-sale debt securities
U.S. Treasury	$	9,937	$	—	$	—	$	—	$	—	$	9,937
U.S. Government sponsored entities and agencies		10,479		6,260		17,881		15,298		100,031		149,949
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		1,449,754		1,449,754
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		168,761		168,761
Obligations of states and political subdivisions		9,288		48,959		76,972		51,432		—		186,651
Corporate debt securities		8,014		33,251		1,915		—		—		43,180
Total available-for-sale debt securities	$	37,718	$	88,470	$	96,768	$	66,730	$	1,718,546	$	2,008,232
Held-to-maturity debt securities (2)
U.S. Government sponsored entities and agencies	$	—	$	—	$	—	$	—	$	11,084	$	11,084
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies (1)		—		—		—		—		147,333		147,333
Obligations of states and political subdivisions		6,149		138,709		387,775		290,572		—		823,205
Corporate debt securities		—		7,449		25,290		—		—		32,739
Total held-to-maturity debt securities	$	6,149	$	146,158	$	413,065	$	290,572	$	158,417	$	1,014,361
Total debt securities	$	43,867	$	234,628	$	509,833	$	357,302	$	1,876,963	$	3,022,593

⁽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⁾  The held-to-maturity debt securities portfolio is carried at an amortized cost of $1.0 billion.

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

The following table presents the gross realized gains and losses on sales and calls of available-for-sale and held-to-maturity debt securities, as well as gains and losses on equity securities for the three and nine months ended September 30, 2018 and 2017, respectively.

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	2018			2017			2018			2017
Debt securities:
Gross realized gains	$	88		$	29		$	100		$	603
Gross realized losses		(13	)		(23	)		(31	)		(92	)
Net gains on debt securities	$	75		$	6		$	69		$	511
Equity securities:
Unrealized gains recognized on securities still held	$	11		$	—		$	330		$	—
Net realized (losses) gains recognized on securities sold		(2	)		—			4			—
Net gains on equity securities	$	9		$	—		$	334		$	—
Net securities gains	$	84		$	6		$	403		$	511

Schedule of Unrealized Losses on Debt Securities

The following tables provide information on unrealized losses on debt securities that have been in an unrealized loss position for less than twelve months and twelve months or more as of September 30, 2018 and December 31, 2017:

	September 30, 2018
	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
U.S. Treasury	$	9,937	$	(15	)		1	$	—	$	—			—	$	9,937	$	(15	)		1
U.S. Government sponsored entities and agencies		93,881		(2,264	)		38		60,410		(2,473	)		11		154,291		(4,737	)		49
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		759,415		(13,670	)		188		822,774		(43,971	)		260		1,582,189		(57,641	)		448
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		79,056		(1,239	)		15		86,703		(4,346	)		11		165,759		(5,585	)		26
Obligations of states and political subdivisions		493,252		(7,866	)		855		120,843		(4,172	)		236		614,095		(12,038	)		1091
Corporate debt securities		42,816		(738	)		17		1,915		(74	)		1		44,731		(812	)		18
Total temporarily impaired securities	$	1,478,357	$	(25,792	)		1,114	$	1,092,645	$	(55,036	)		519	$	2,571,002	$	(80,828	)		1,633
	December 31, 2017
	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
U.S. Government sponsored entities and agencies	$	24,776	$	(160	)		4	$	42,248	$	(771	)		8	$	67,024	$	(931	)		12
Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		423,794		(5,039	)		87		637,461		(16,977	)		193		1,061,255		(22,016	)		280
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		79,061		(1,089	)		10		27,852		(496	)		6		106,913		(1,585	)		16
Obligations of states and political subdivisions		132,831		(852	)		210		77,554		(1,217	)		160		210,385		(2,069	)		370
Corporate debt securities		4,015		(19	)		1		1,948		(40	)		1		5,963		(59	)		2
Total temporarily impaired securities	$	664,477	$	(7,159	)		312	$	787,063	$	(19,501	)		368	$	1,451,540	$	(26,660	)		680

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Loans and the Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2018

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, and discounts on purchased loans. The net deferred loan costs were $2.8 million and $1.6 million at September 30, 2018 and December 31, 2017, respectively. The unamortized discount on purchased portfolio loans from acquisitions was $54.3 million, including $6.7 million related to FTSB and $25.9 million related to FFKT, and $21.9 million at September 30, 2018 and December 31, 2017, respectively.

(unaudited, in thousands)	September 30, 2018		December 31, 2017
Commercial real estate:
Land and construction	$	538,922	$	392,597
Improved property		3,367,299		2,601,851
Total commercial real estate		3,906,221		2,994,448
Commercial and industrial		1,292,073		1,125,327
Residential real estate		1,598,477		1,353,301
Home equity		604,106		529,196
Consumer		325,546		339,169
Total portfolio loans		7,726,423		6,341,441
Loans held for sale		55,913		20,320
Total loans	$	7,782,336	$	6,361,761

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 Nine Months Ended September 30, 2018 and 2017
(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, 2017:
Allowance for loan losses	$	3,117		$	21,166		$	9,414		$	3,206		$	4,497		$	3,063		$	821		$	45,284
Allowance for loan commitments		119			26			173			7			212			37			—			574
Total beginning allowance for credit losses		3,236			21,192			9,587			3,213			4,709			3,100			821			45,858
Provision for credit losses:
Provision for loan losses		789			(721	)		2,538			1,106			(292	)		541			840			4,801
Provision for loan commitments		67			(3	)		32			2			9			3			—			110
Total provision for credit losses		856			(724	)		2,570			1,108			(283	)		544			840			4,911
Charge-offs		(137	)		(719	)		(871	)		(873	)		(745	)		(2,465	)		(941	)		(6,751	)
Recoveries		400			1,098			970			336			830			1,657			277			5,568
Net charge-offs		263			379			99			(537	)		85			(808	)		(664	)		(1,183	)
Balance at September 30, 2018:
Allowance for loan losses		4,169			20,824			12,051			3,775			4,290			2,796			997			48,902
Allowance for loan commitments		186			23			205			9			221			40			—			684
Total ending allowance for credit losses	$	4,355		$	20,847		$	12,256		$	3,784		$	4,511		$	2,836		$	997		$	49,586
Balance at December 31, 2016:
Allowance for loan losses	$	4,348		$	18,628		$	8,412		$	4,106		$	3,422		$	3,998		$	760		$	43,674
Allowance for loan commitments		151			17			188			9			162			44			—			571
Total beginning allowance for credit losses		4,499			18,645			8,600			4,115			3,584			4,042			760			44,245
Provision for credit losses:
Provision for loan losses		415			1,619			2,842			(203	)		1,259			922			680			7,534
Provision for loan commitments		(18	)		4			45			—			49			(4	)		—			76
Total provision for credit losses		397			1,623			2,887			(203	)		1,308			918			680			7,610
Charge-offs		—			(1,752	)		(2,255	)		(797	)		(372	)		(2,877	)		(947	)		(9,000	)
Recoveries		89			492			649			266			180			1,336			267			3,279
Net charge-offs		89			(1,260	)		(1,606	)		(531	)		(192	)		(1,541	)		(680	)		(5,721	)
Balance at September 30, 2017:
Allowance for loan losses		4,852			18,987			9,648			3,372			4,489			3,379			760			45,487
Allowance for loan commitments		133			21			233			9			211			40			—			647
Total ending allowance for credit losses	$	4,985		$	19,008		$	9,881		$	3,381		$	4,700		$	3,419		$	760		$	46,134

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		Deposit Over- draft		Total
September 30, 2018
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Allowance for loans collectively evaluated for impairment		4,169		20,824		12,051		3,775		4,290		2,796		997		48,902
Allowance for loan commitments		186		23		205		9		221		40		—		684
Total allowance for credit losses	$	4,355	$	20,847	$	12,256	$	3,784	$	4,511	$	2,836	$	997	$	49,586
Portfolio loans:
Individually evaluated for impairment(1)	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Collectively evaluated for impairment		537,699		3,361,315		1,291,296		1,595,547		604,106		325,419		—		7,715,382
Acquired with deteriorated credit quality		1,223		5,984		777		2,930		—		127		—		11,041
Total portfolio loans	$	538,922	$	3,367,299	$	1,292,073	$	1,598,477	$	604,106	$	325,546	$	—	$	7,726,423
December 31, 2017
Allowance for credit losses:
Allowance for loans individually evaluated for impairment	$	—	$	388	$	—	$	—	$	—	$	—	$	—	$	388
Allowance for loans collectively evaluated for impairment		3,117		20,778		9,414		3,206		4,497		3,063		821		44,896
Allowance for loan commitments		119		26		173		7		212		37		—		574
Total allowance for credit losses	$	3,236	$	21,192	$	9,587	$	3,213	$	4,709	$	3,100	$	821	$	45,858
Portfolio loans:
Individually evaluated for impairment(1)	$	—	$	3,344	$	—	$	—	$	—	$	—	$	—	$	3,344
Collectively evaluated for impairment		391,140		2,593,393		1,124,544		1,352,587		529,196		339,163		—		6,330,023
Acquired with deteriorated credit quality		1,457		5,114		783		714		—		6		—		8,074
Total portfolio loans	$	392,597	$	2,601,851	$	1,125,327	$	1,353,301	$	529,196	$	339,169	$	—	$	6,341,441

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

Summary of Commercial Loans by Risk Grade

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

	Commercial 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 September 30, 2018
Pass	$	533,982	$	3,314,324	$	1,272,181	$	5,120,487
Criticized—compromised		2,909		31,399		12,062		46,370
Classified—substandard		2,031		21,576		7,830		31,437
Classified—doubtful		—		—		—		—
Total	$	538,922	$	3,367,299	$	1,292,073	$	5,198,294
As of December 31, 2017
Pass	$	386,753	$	2,548,805	$	1,110,267	$	4,045,825
Criticized—compromised		2,984		25,673		7,435		36,092
Classified—substandard		2,860		27,373		7,625		37,858
Classified—doubtful		—		—		—		—
Total	$	392,597	$	2,601,851	$	1,125,327	$	4,119,775

Summary of Changes in Accretable Yield for Loans Acquired with Deteriorated Credit Quality

The following table provides changes in accretable yield for loans acquired with deteriorated credit quality:

	For the Nine Months Ended
(unaudited, in thousands)	September 30, 2018			September 30, 2017
Balance at beginning of period	$	1,724		$	1,717
Acquisitions		695			—
Reduction due to change in projected cash flows		(86	)		—
Reclass from non-accretable difference		6,287			1,490
Transfers out		—			(216	)
Accretion		(902	)		(1,384	)
Balance at end of period	$	7,718		$	1,607

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 September 30, 2018
Commercial real estate:
Land and construction	$	538,181	$	643	$	98	$	—	$	741	$	538,922	$	—
Improved property		3,357,883		1,657		352		7,407		9,416		3,367,299		88
Total commercial real estate		3,896,064		2,300		450		7,407		10,157		3,906,221		88
Commercial and industrial		1,287,693		776		462		3,142		4,380		1,292,073		114
Residential real estate		1,579,164		8,100		2,708		8,505		19,313		1,598,477		1,225
Home equity		596,477		2,871		1,002		3,756		7,629		604,106		646
Consumer		322,093		2,291		605		557		3,453		325,546		378
Total portfolio loans		7,681,491		16,338		5,227		23,367		44,932		7,726,423		2,451
Loans held for sale		55,913		—		—		—		—		55,913		—
Total loans	$	7,737,404	$	16,338	$	5,227	$	23,367	$	44,932	$	7,782,336	$	2,451
Impaired loans included above are as follows:
Non-accrual loans	$	7,480	$	1,653	$	1,225	$	20,916	$	23,794	$	31,274
TDRs accruing interest (1)		5,667		314		357		—		671		6,338
Total impaired	$	13,147	$	1,967	$	1,582	$	20,916	$	24,465	$	37,612
As of December 31, 2017
Commercial real estate:
Land and construction	$	392,189	$	—	$	172	$	236	$	408	$	392,597	$	—
Improved property		2,589,704		374		1,200		10,573		12,147		2,601,851		243
Total commercial real estate		2,981,893		374		1,372		10,809		12,555		2,994,448		243
Commercial and industrial		1,121,957		572		196		2,602		3,370		1,125,327		20
Residential real estate		1,338,240		4,487		2,376		8,198		15,061		1,353,301		1,113
Home equity		522,584		2,135		683		3,794		6,612		529,196		742
Consumer		334,723		2,466		842		1,138		4,446		339,169		608
Total portfolio loans		6,299,397		10,034		5,469		26,541		42,044		6,341,441		2,726
Loans held for sale		20,320		—		—		—		—		20,320		—
Total loans	$	6,319,717	$	10,034	$	5,469	$	26,541	$	42,044	$	6,361,761	$	2,726
Impaired loans included above are as follows:
Non-accrual loans	$	9,195	$	1,782	$	2,033	$	23,815	$	27,630	$	36,825
TDRs accruing interest (1)		6,055		348		168		—		516		6,571
Total impaired	$	15,250	$	2,130	$	2,201	$	23,815	$	28,146	$	43,396

⁽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
	September 30, 2018						December 31, 2017
(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	$	—	$		$	—	$	412	$	239	$	—
Improved property		14,639		9,928		—		18,229		12,863		—
Commercial and industrial		3,886		3,327		—		3,745		3,086		—
Residential real estate		21,226		18,944		—		20,821		18,982		—
Home equity		5,550		4,728		—		5,833		5,169		—
Consumer		857		685		—		1,084		952		—
Total impaired loans without a specific allowance		46,158		37,612		—		50,124		41,291		—
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—
Improved property		—		—		—		2,105		2,105		388
Commercial and industrial		—		—		—		—		—		—
Total impaired loans with a specific allowance		—		—		—		2,105		2,105		388
Total impaired loans	$	46,158	$	37,612	$	—	$	52,229	$	43,396	$	388

⁽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								For the Nine Months Ended
	September 30, 2018				September 30, 2017				September 30, 2018				September 30, 2017
(unaudited, in thousands)	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related specific allowance recorded:
Commercial real estate:
Land and construction	$	—	$	—	$	444	$	—	$	260	$	—	$	516	$	—
Improved Property		10,409		15		10,923		31		11,000		383		10,271		400
Commercial and industrial		3,181		5		3,588		2		2,985		9		3,700		6
Residential real estate		18,336		68		17,039		57		18,207		195		17,743		192
Home equity		4,924		8		4,727		4		4,997		19		4,456		14
Consumer		692		3		731		2		776		8		746		5
Total impaired loans without a specific allowance		37,542		99		37,452		96		38,225		614		37,432		617
With a specific allowance recorded:
Commercial real estate:
Land and construction		—		—		—		—		—		—		—		—
Improved Property		—		—		5,137		—		1,052		—		5,032		—
Commercial and industrial		—		—		—		—		—		—		318		—
Total impaired loans with a specific allowance		—		—		5,137		—		1,052		—		5,350		—
Total impaired loans	$	37,542	$	99	$	42,589	$	96	$	39,277	$	614	$	42,782	$	617

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)	September 30, 2018		December 31, 2017
Commercial real estate:
Land and construction	$	—	$	239
Improved property		8,757		13,318
Total commercial real estate		8,757		13,557
Commercial and industrial		3,165		2,958
Residential real estate		14,475		14,661
Home equity		4,283		4,762
Consumer		594		887
Total	$	31,274	$	36,825

⁽¹⁾  At September 30, 2018, there was one borrower with a loan greater than $1.0 million totaling $3.4 million, as compared to three borrowers with loans greater than $1.0 million totaling $6.8 million at December 31, 2017. 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
	September 30, 2018						December 31, 2017
(unaudited, in thousands)	Accruing		Non-Accrual		Total		Accruing		Non-Accrual		Total
Commercial real estate:
Land and construction	$	—	$	—	$	—	$	—	$	3	$	3
Improved property		1,171		640		1,811		1,650		428		2,078
Total commercial real estate		1,171		640		1,811		1,650		431		2,081
Commercial and industrial		162		—		162		128		97		225
Residential real estate		4,469		1,182		5,651		4,321		1,880		6,201
Home equity		445		167		612		407		337		744
Consumer		91		47		138		65		120		185
Total	$	6,338	$	2,036	$	8,374	$	6,571	$	2,865	$	9,436

As of September 30, 2018 and December 31, 2017, there were no 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. WesBanco had unfunded commitments to debtors whose loans were classified as impaired of $0.2 million and $0.1 million as of September 30, 2018 and December 31, 2017, respectively.

Loans Identified as TDRs

The following tables present details related to loans identified as TDRs during the three and nine months ended September 30, 2018 and 2017, respectively:

	New TDRs (1)
	For the Three Months Ended
	September 30, 2018						September 30, 2017
(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		—	$	—	$	—		—	$	—	$	—
Improved Property		—		—		—		1		190		185
Total commercial real estate		—		—		—		1		190		185
Commercial and industrial		—		—		—		—		—		—
Residential real estate		—		—		—		—		—		—
Home equity		—		—		—		2		94		88
Consumer		1		19		18		1		7		6
Total		1	$	19	$	18		4	$	291	$	279

⁽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.

	New TDRs (1)
	For the Nine Months Ended
	September 30, 2018						September 30, 2017
(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		—	$	—	$	—		—	$	—	$	—
Improved Property		—		—		—		1		190		185
Total commercial real estate		—		—		—		1		190		185
Commercial and industrial		1		10		8		1		64		59
Residential real estate		5		203		176		2		22		17
Home equity		1		20		19		3		141		132
Consumer		4		65		52		4		42		33
Total		11	$	298	$	255		11	$	459	$	426

(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 nine months ended September 30, 2018 and 2017, respectively, that were restructured within the last twelve months prior to September, 2018 and 2017, respectively:

	Defaulted TDRs (1)
	For the Nine Months Ended
	September 30, 2018				September 30, 2017
(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		2		172		1		7
Home equity		1		6		—		—
Consumer		—		—		1		7
Total		3	$	178		2	$	14

⁽¹⁾ Excludes loans that were either charged-off or cured by period end. The recorded investment is as of September 30, 2018 and 2017, 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:

	September 30, 2018		December 31, 2017
(unaudited, in thousands)
Other real estate owned	$	6,836	$	5,195
Repossessed assets		41		102
Total other real estate owned and repossessed assets	$	6,877	$	5,297

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Derivatives and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Fair Values of Derivative Instruments on Balance Sheets

The table below presents the fair value of WesBanco’s derivative financial instruments as well as their classification on the Balance Sheet as of September 30, 2018 and December 31, 2017:

	September 30, 2018						December 31, 2017
(unaudited, in thousands)	Notional or Contractual Amount		Asset Derivatives		Liability Derivatives		Notional or Contractual Amount		Asset Derivatives		Liability Derivatives
Derivatives
Loan Swaps:
Interest rate swaps	$	234,363	$	6,451	$	6,527	$	298,223	$	7,351	$	7,345
Other contracts:
Interest rate loan commitments		27,795		32		—		20,319		49		—
Forward TBA contracts		32,000		148		—		31,750		—		23
Total derivatives			$	6,631	$	6,527			$	7,400	$	7,368

Summary of Effect of Derivative Instruments on Income Statement

The table below presents the change in the fair value of the Company’s derivative financial instruments reflected within the other non-interest income line item of the consolidated income statement for the three and nine months ended September 30, 2018 and 2017, respectively.

		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	Location of Gain/(Loss)	2018			2017			2018			2017
Interest rate swaps	Other income	$	(293	)	$	(32	)	$	(82	)	$	(335	)
Interest rate loan commitments	Mortgage banking income		(111	)		—			32			123
Forward TBA contracts	Mortgage banking income		131			—			530			—
Total		$	(273	)	$	(32	)	$	480		$	(212	)

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Pension Plan (Tables)

9 Months Ended

Sep. 30, 2018

Retirement Benefits [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 September 30,						For the Nine Months Ended September 30,
(unaudited, in thousands)	2018			2017			2018			2017
Service cost – benefits earned during year	$	715		$	650		$	2,121		$	1,929
Interest cost on projected benefit obligation		1,242			1,107			3,684			3,287
Expected return on plan assets		(2,416	)		(1,928	)		(7,169	)		(5,721	)
Amortization of prior service cost		6			7			19			19
Amortization of net loss		766			812			2,274			2,409
Net periodic pension cost	$	313		$	648		$	929		$	1,923

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Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2018

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 September 30, 2018 and December 31, 2017:

			September 30, 2018
			Fair Value Measurements Using:
(unaudited, in thousands)	September 30, 2018		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)		Investments Measured at Net Asset Value
Recurring fair value measurements
Equity securities	$	12,784	$	12,784	$	—	$	—	$	—
Debt securities—available-for-sale
U.S. Treasury		9,937		—		9,937		—		—
U.S. Government sponsored entities and agencies		149,949		—		149,949		—		—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		1,449,754		—		1,449,754		—		—
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		168,761		—		168,761		—		—
Obligations of state and political subdivisions		186,651		—		185,125		1,526		—
Corporate debt securities		43,180		—		43,180		—		—
Total debt securities—available-for-sale	$	2,008,232	$	—	$	2,006,706	$	1,526	$	—
Loans held for sale		55,913		—		55,913		—		—
Other assets—interest rate derivatives agreements		6,451		—		6,451		—		—
Total assets recurring fair value measurements	$	2,083,380	$	12,784	$	2,069,070	$	1,526	$	—
Other liabilities—interest rate derivatives agreements	$	6,527	$	—	$	6,527	$	—	$	—
Total liabilities recurring fair value measurements	$	6,527	$	—	$	6,527	$	—	$	—
Nonrecurring fair value measurements
Impaired loans	$	—	$	—	$	—	$	—	$	—
Other real estate owned and repossessed assets		6,877		—		—		6,877		—
Total nonrecurring fair value measurements	$	6,877	$	—	$	—	$	6,877	$	—

			December 31, 2017
			Fair Value Measurements Using:
(unaudited, in thousands)	December 31, 2017		Quoted Prices in Active Markets for Identical Assets (level 1)		Significant Other Observable Inputs (level 2)		Significant Unobservable Inputs (level 3)		Investments Measured at Net Asset Value
Recurring fair value measurements
Equity securities	$	13,457	$	11,391	$	—	$	—	$	2,066
Debt securities—available-for-sale
U.S. Government sponsored entities and agencies		71,843		—		71,843		—		—
Residential mortgage-backed securities and collateralized mortgage obligations of government agencies		934,922		—		934,922		—		—
Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies		114,867		—		114,867		—		—
Obligations of state and political subdivisions		104,830		—		104,830		—		—
Corporate debt securities		35,403		—		35,403		—		—
Total debt securities—available-for-sale	$	1,261,865	$	—	$	1,261,865	$	—	$	—
Loans held for sale		20,320		—		20,320		—		—
Other assets—interest rate derivatives agreements		7,351		—		7,351		—		—
Total assets recurring fair value measurements	$	1,302,993	$	11,391	$	1,289,536	$	—	$	2,066
Other liabilities—interest rate derivatives agreements	$	7,345	$	—	$	7,345	$	—	$	—
Total liabilities recurring fair value measurements	$	7,345	$	—	$	7,345	$	—	$	—
Nonrecurring fair value measurements
Impaired loans	$	1,717	$	—	$	—	$	1,717	$	—
Other real estate owned and repossessed assets		5,297		—		—		5,297		—
Total nonrecurring fair value measurements	$	7,014	$	—	$	—	$	7,014	$	—

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)
September 30, 2018
Impaired loans	$	—		Appraisal of collateral	(1)		Appraisal adjustments	(2)		—
							Liquidation expenses	(2)		—
Other real estate owned and repossessed assets		6,877		Appraisal of collateral	(1), (3)
December 31, 2017:
Impaired loans	$	1,717		Appraisal of collateral	(1)		Appraisal adjustments	(2)		(4.8%) / (4.8	%)
							Liquidation expenses	(2)		(7.6%) / (7.6	%)
Other real estate owned and repossessed assets		5,297		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
					September 30, 2018
(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)		Investments Measured at Net Asset Value
Financial Assets
Cash and due from banks	$	273,680	$	273,680	$	273,680	$	—	$	—	$	—
Equity securities		12,784		12,784		12,784		—		—		—
Debt securities available-for-sale		2,008,232		2,008,232		—		2,006,706		1,526		—
Debt securities held-to-maturity		1,025,538		1,014,361		—		1,013,788		573		—
Net loans		7,677,521		7,517,958		—		—		7,517,958		—
Loans held for sale		55,913		55,913		—		55,913		—		—
Other assets—interest rate derivatives		6,451		6,451		—		6,451		—		—
Accrued interest receivable		39,465		39,465		39,465		—		—		—
Financial Liabilities
Deposits		8,941,758		8,960,221		7,428,158		1,532,063		—		—
Federal Home Loan Bank borrowings		1,131,253		1,123,441		—		1,123,441		—		—
Other borrowings		294,281		294,285		292,290		1,995		—		—
Subordinated debt and junior subordinated debt		189,745		179,497		—		179,497		—		—
Other liabilities—interest rate derivatives		6,527		6,527		—		6,527		—		—
Accrued interest payable		6,623		6,623		6,623		—		—		—
					Fair Value Measurements at
					December 31, 2017
(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)		Investments Measured at Net Asset Value
Financial Assets
Cash and due from banks	$	117,572	$	117,572	$	117,572	$	—	$	—	$	—
Equity securities		13,457		13,457		11,391		—		—		2,066
Debt securities available-for-sale		1,261,865		1,261,865		—		1,261,865		—		—
Debt securities held-to-maturity		1,009,500		1,023,784		—		1,023,191		593		—
Net loans		6,296,157		6,212,823		—		—		6,212,823		—
Loans held for sale		20,320		20,320		—		20,320		—		—
Other assets—interest rate derivatives		7,351		7,351		—		7,351		—		—
Accrued interest receivable		29,728		29,728		29,728		—		—		—
Financial Liabilities
Deposits		7,043,588		7,053,536		5,766,531		1,287,005		—		—
Federal Home Loan Bank borrowings		948,203		944,706		—		944,706		—		—
Other borrowings		184,805		184,814		182,785		2,029		—		—
Subordinated debt and junior subordinated debt		164,327		146,484		—		146,484		—		—
Other liabilities—interest rate derivatives		7,345		7,345		—		7,345		—		—
Accrued interest payable		3,178		3,178		3,178		—		—		—

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Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2018

Text Block [Abstract]

Summary of Revenue Recognition

The following table summarizes the point of revenue recognition and the income recognized for each of the revenue streams for the three and nine months ended September 30, 2018:

(unaudited, in thousands)	Point of Revenue Recognition	For the Three Months Ended September 30, 2018		For the Nine Months Ended September 30, 2018
Revenue Streams
Trust fees
Trust account fees	Over time	$	4,006	$	11,856
WesMark fees	Over time		2,259		6,664
Total trust fees			6,265		18,520
Service charges on deposits
Commercial banking fees	Over time		563		1,406
Personal service charges	At a point in time & over time		5,750		14,876
Total service charges on deposits			6,313		16,282
Net securities brokerage revenue
Annuity commissions	At a point in time		1,326		3,836
Equity and debt security trades	At a point in time		116		304
Managed money	Over time		173		477
Trail commissions	Over time		221		698
Total net securities brokerage revenue			1,836		5,315
Allotment fees (1)	At a point in time & over time		311		311
Electronic banking fees	At a point in time		6,139		16,697
Mortgage banking income	At a point in time		1,521		4,297
Net gain or loss on sale of other real estate owned	At a point in time		150		641

(1) Allotment fees are included in other non-interest income.

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Comprehensive Income/(Loss) (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Components of Accumulated Other Comprehensive Income

The activity in accumulated other comprehensive income for the nine months ended September 30, 2018 and 2017 is as follows:

	Accumulated Other Comprehensive Income/(Loss) (1)
(unaudited, in thousands)	Defined Benefit Plans			Unrealized Gains (Losses) on Debt  Securities Available-for-Sale			Unrealized Gains on Debt Securities Transferred from Available-for-Sale to Held-to-Maturity			Total
Balance at December 31, 2017	$	(18,626	)	$	(13,250	)	$	381		$	(31,495	)
Other comprehensive income before reclassifications		—			(33,013	)		—			(33,013	)
Acquired FFKT Medical benefit plan		4,235			—			—			4,235
Amounts reclassified from accumulated other comprehensive income		1,621			(9	)		(149	)		1,463
Period change		5,856			(33,022	)		(149	)		(27,315	)
Adoption of Accounting Standard ASU 2016-01 (2)		—			(1,063	)		—			(1,063	)
Balance at September 30, 2018	$	(12,770	)	$	(47,335	)	$	232		$	(59,873	)
Balance at December 31, 2016	$	(17,758	)	$	(9,890	)	$	522		$	(27,126	)
Other comprehensive income before reclassifications		—			4,740			—			4,740
Amounts reclassified from accumulated other comprehensive income		1,679			35			(165	)		1,549
Period change		1,679			4,775			(165	)		6,289
Balance at September 30, 2017	$	(16,079	)	$	(5,115	)	$	357		$	(20,837	)

⁽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 23% in 2018 and 37% in all prior periods.

⁽²⁾  See Note 1, Summary of Significant Accounting Policies for additional information about WesBanco’s adoption of ASU 2016-01.

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 and nine months ended September 30, 2018 and 2017, respectively:

Details about Accumulated Other Comprehensive Income Components (unaudited, in thousands)	For the Three Months Ended September 30,						For the Nine Months Ended September 30,						Affected Line Item in the Statement of Net Income
	2018			2017			2018			2017
Securities available-for-sale (1):
Net securities gains/losses reclassified into earnings	$	(11	)	$	—		$	(11	)	$	55		Net securities gains (Non-interest income)
Related income tax benefit		2			—			2			(20	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(9	)		—			(9	)		35
Securities held-to-maturity (1):
Amortization of unrealized gain transferred from available-for-sale		(64	)		(66	)		(195	)		(256	)	Interest and dividends on securities (Interest and dividend income)
Related income tax expense		15			24			46			91		Provision for income taxes
Net effect on accumulated other comprehensive income for the period		(49	)		(42	)		(149	)		(165	)
Defined benefit plans (2):
Amortization of net loss and prior service costs		772			816			2,293			2,429		Employee benefits (Non-interest expense)
Related income tax benefit		(177	)		(303	)		(672	)		(750	)	Provision for income taxes
Net effect on accumulated other comprehensive income for the period		595			513			1,621			1,679
Total reclassifications for the period	$	537		$	471		$	1,463		$	1,549

⁽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 7, “Pension and Other Post Retirement Benefits” for additional detail.

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Commitments and Contingent Liabilities (Tables)

9 Months Ended

Sep. 30, 2018

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)	September 30, 2018		December 31, 2017
Lines of credit	$	1,855,388	$	1,452,697
Loans approved but not closed		349,173		245,644
Overdraft limits		154,221		126,671
Letters of credit		41,515		31,951
Contingent obligations and other guarantees		5,725		6,700

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Business Segments (Tables)

9 Months Ended

Sep. 30, 2018

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 September 30, 2018:
Interest income	$	108,393	$	—	$	108,393
Interest expense		18,460		—		18,460
Net interest income		89,933		—		89,933
Provision for credit losses		1,035		—		1,035
Net interest income after provision for credit losses		88,898		—		88,898
Non-interest income		19,959		6,265		26,224
Non-interest expense		72,378		3,742		76,120
Income before provision for income taxes		36,479		2,523		39,002
Provision for income taxes		5,986		530		6,516
Net income	$	30,493	$	1,993	$	32,486
For the Three Months ended September 30, 2017:
Interest income	$	85,489	$	—	$	85,489
Interest expense		11,235		—		11,235
Net interest income		74,254		—		74,254
Provision for credit losses		2,516		—		2,516
Net interest income after provision for credit losses		71,738		—		71,738
Non-interest income		15,541		5,358		20,899
Non-interest expense		52,355		3,399		55,754
Income before provision for income taxes		34,924		1,959		36,883
Provision for income taxes		9,744		783		10,527
Net income	$	25,180	$	1,176	$	26,356
For the Nine Months ended September 30, 2018:
Interest income	$	293,596	$	—	$	293,596
Interest expense		48,127		—		48,127
Net interest income		245,469		—		245,469
Provision for credit losses		4,911		—		4,911
Net interest income after provision for credit losses		240,558		—		240,558
Non-interest income		55,195		18,520		73,715
Non-interest expense		183,298		10,936		194,234
Income before provision for income taxes		112,455		7,584		120,039
Provision for income taxes		19,262		1,593		20,855
Net income	$	93,193	$	5,991	$	99,184
For the Nine Months ended September 30, 2017:
Interest income	$	247,573	$	—	$	247,573
Interest expense		30,461		—		30,461
Net interest income		217,112		—		217,112
Provision for credit losses		7,610		—		7,610
Net interest income after provision for credit losses		209,502		—		209,502
Non-interest income		48,833		17,073		65,906
Non-interest expense		156,102		9,921		166,023
Income before provision for income taxes		102,233		7,152		109,385
Provision for income taxes		27,940		2,861		30,801
Net income	$	74,293	$	4,291	$	78,584

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Feb. 28, 2016
Summary Of Significant Accounting Policies [Line Items]
Service cost component of defined benefit plan		$ 715	$ 650	$ 2,121	$ 1,929
Accounting Standards Update 2016-01 [Member]
Summary Of Significant Accounting Policies [Line Items]
Adjustment to retained earnings	$ 1,100
Accounting Standards Update 2016-02 [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Non-cancellable operating leases						$ 15,000
Accounting Standards Update 2016-02 [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Non-cancellable operating leases						$ 20,000

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Mergers and Acquisitions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			9 Months Ended
	Aug. 20, 2018	Apr. 05, 2018	Sep. 30, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Total Assets			$ 12,599,479	$ 9,816,178
Portfolio loans, net of unearned income			7,726,423	$ 6,341,441
First Sentry Bancshares, Inc. [Member]
Business Acquisition [Line Items]
Total Assets		$ 705,600
Portfolio loans, net of unearned income		448,100
Securities		142,903
Value of acquisition		$ 108,322
Closing stock price		$ 42.96
Number of shares issued for acquisition		2,498,761
Cash paid for acquisition		$ 975
Goodwill acquired		66,849
Purchase price allocation in core deposit intangible		$ 8,078
Merger related expense			5,500
Farmers Capital Bank Corporation [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,600,000
Portfolio loans, net of unearned income	1,000,000
Securities	239,321
Value of acquisition	$ 428,901
Closing stock price	$ 49.40
Number of shares issued for acquisition	7,920,387
Cash paid for acquisition	$ 37,634
Goodwill acquired	225,092
Purchase price allocation in core deposit intangible	42,593
Merger related expense			$ 11,000
Farmers Capital Bank Corporation [Member] | Community Banking Segment [Member]
Business Acquisition [Line Items]
Goodwill acquired	225,100
Purchase price allocation in core deposit intangible	39,700
Farmers Capital Bank Corporation [Member] | Trust and Investment Services [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Purchase price allocation in core deposit intangible	$ 2,900

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Mergers and Acquisitions - Summary of Purchase Price of Acquisition and Resulting Goodwill (Detail) - USD ($) $ in Thousands	Aug. 20, 2018	Apr. 05, 2018
First Sentry Bancshares, Inc. [Member]
Purchase Price:
Fair value of WesBanco shares issued		$ 107,347
Cash consideration for outstanding shares		975
Total purchase price		108,322
Fair value of:
Tangible assets acquired		610,443
Core deposit and other intangible assets acquired		8,078
Liabilities assumed		(664,172)
Net cash received in the acquisition		87,124
Fair value of net assets acquired		41,473
Goodwill recognized		$ 66,849
Farmers Capital Bank Corporation [Member]
Purchase Price:
Fair value of WesBanco shares issued	$ 391,267
Cash consideration for outstanding shares	37,634
Total purchase price	428,901
Fair value of:
Tangible assets acquired	1,360,951
Core deposit and other intangible assets acquired	42,593
Liabilities assumed	(1,429,874)
Net cash received in the acquisition	230,139
Fair value of net assets acquired	203,809
Goodwill recognized	$ 225,092

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Mergers and Acquisitions - Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Aug. 20, 2018	Jun. 30, 2018	Apr. 05, 2018
First Sentry Bancshares, Inc. [Member]
Business Acquisition [Line Items]
Cash and due from banks				$ 87,124
Securities				142,903
Loans				448,075
Goodwill and other intangible assets				74,927
Accrued income and other assets				19,465
Total assets acquired				772,494
Liabilities assumed
Deposits				590,065
Borrowings				70,710
Accrued expenses and other liabilities				3,397
Total liabilities assumed				664,172
Fair value of net assets acquired				41,473
Net assets acquired				$ 108,322
Purchase Price Allocation Adjustment [Member]
Business Acquisition [Line Items]
Loans	$ (264)
Goodwill and other intangible assets	(159)
Accrued income and other assets	(6)
Liabilities assumed
Deposits	47
Accrued expenses and other liabilities	(154)
Fair value of net assets acquired	(630)
Increase in goodwill recognized	630
Goodwill recognized	$ 66,849		$ 66,219
Farmers Capital Bank Corporation [Member]
Business Acquisition [Line Items]
Cash and due from banks		$ 230,139
Securities		239,321
Loans		1,028,120
Goodwill and other intangible assets		267,685
Accrued income and other assets		93,510
Total assets acquired		1,858,775
Liabilities assumed
Deposits		1,330,328
Borrowings		71,780
Accrued expenses and other liabilities		27,766
Total liabilities assumed		1,429,874
Fair value of net assets acquired		203,809
Net assets acquired		$ 428,901

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Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator for both basic and diluted earnings per common share:
Net income	$ 32,486	$ 26,356	$ 99,184	$ 78,584
Denominator:
Total average basic common shares outstanding	50,277,847	44,031,813	46,965,095	43,992,017
Effect of dilutive stock options and other stock compensation	154,265	55,068	142,734	67,452
Total diluted average common shares outstanding	50,432,112	44,086,881	47,107,829	44,059,469
Earnings per common share-basic	$ 0.65	$ 0.60	$ 2.11	$ 1.79
Earnings per common share-diluted	$ 0.64	$ 0.60	$ 2.11	$ 1.78

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Earnings Per Common Share - Additional Information (Detail) - shares			3 Months Ended		9 Months Ended
	Aug. 20, 2018	Apr. 05, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule Of Antidilutive Securities Included In Computation of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan					45,840
First Sentry Bancshares, Inc. [Member]
Schedule Of Antidilutive Securities Included In Computation of Earnings Per Share [Line Items]
Number of shares issued for acquisition		2,498,761
Number of shares granted to employees		9,465
Farmers Capital Bank Corporation [Member]
Schedule Of Antidilutive Securities Included In Computation of Earnings Per Share [Line Items]
Number of shares issued for acquisition	7,920,387
Number of shares granted to employees	18,685
Farmers Capital Bank Corporation [Member] | Treasury Stock [Member]
Schedule Of Antidilutive Securities Included In Computation of Earnings Per Share [Line Items]
Number of shares granted to employees	6,690
Restricted Stock [Member]
Schedule Of Antidilutive Securities Included In Computation of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan			17,081	4,502	17,081	4,502
Stock Option [Member]
Schedule Of Antidilutive Securities Included In Computation of Earnings Per Share [Line Items]
Securities excluded from computation of net income per diluted shares				117,550	117,600

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Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Debt Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale, Amortized Cost	$ 2,069,660	$ 1,280,585
Available-for-sale, Gross Unrealized Gains	1,681	3,397
Available-for-sale, Gross Unrealized Losses	(63,109)	(22,117)
Available-for-sale, Estimated Fair Value	2,008,232	1,261,865
Held-to-maturity, Amortized Cost	1,025,538	1,009,500
Held-to-maturity, Gross Unrealized Gains	6,542	18,827
Held-to-maturity, Gross Unrealized Losses	(17,719)	(4,543)
Held-to-maturity securities, Fair value	1,014,361	1,023,784
Total securities, Amortized Cost	3,095,198	2,290,085
Total securities, Gross Unrealized Gains	8,223	22,224
Total securities, Gross Unrealized Losses	(80,828)	(26,660)
Total securities, Estimated Fair Value	3,022,593	2,285,649
U.S. Government Sponsored Entities and Agencies [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale, Amortized Cost	154,054	72,425
Available-for-sale, Gross Unrealized Gains	17	24
Available-for-sale, Gross Unrealized Losses	(4,122)	(606)
Available-for-sale, Estimated Fair Value	149,949	71,843
Held-to-maturity, Amortized Cost	11,699	11,465
Held-to-maturity, Gross Unrealized Losses	(615)	(325)
Held-to-maturity securities, Fair value	11,084	11,140
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale, Amortized Cost	1,500,563	954,115
Available-for-sale, Gross Unrealized Gains	44	214
Available-for-sale, Gross Unrealized Losses	(50,853)	(19,407)
Available-for-sale, Estimated Fair Value	1,449,754	934,922
Held-to-maturity, Amortized Cost	154,018	170,025
Held-to-maturity, Gross Unrealized Gains	103	544
Held-to-maturity, Gross Unrealized Losses	(6,788)	(2,609)
Held-to-maturity securities, Fair value	147,333	167,960
Obligations of State and Political Subdivisions [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale, Amortized Cost	187,501	102,363
Available-for-sale, Gross Unrealized Gains	1,445	2,927
Available-for-sale, Gross Unrealized Losses	(2,295)	(460)
Available-for-sale, Estimated Fair Value	186,651	104,830
Held-to-maturity, Amortized Cost	826,514	794,655
Held-to-maturity, Gross Unrealized Gains	6,434	17,364
Held-to-maturity, Gross Unrealized Losses	(9,743)	(1,609)
Held-to-maturity securities, Fair value	823,205	810,410
Corporate Debt Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale, Amortized Cost	43,259	35,234
Available-for-sale, Gross Unrealized Gains	160	228
Available-for-sale, Gross Unrealized Losses	(239)	(59)
Available-for-sale, Estimated Fair Value	43,180	35,403
Held-to-maturity, Amortized Cost	33,307	33,355
Held-to-maturity, Gross Unrealized Gains	5	919
Held-to-maturity, Gross Unrealized Losses	(573)
Held-to-maturity securities, Fair value	32,739	34,274
US Treasury Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale, Amortized Cost	9,952
Available-for-sale, Gross Unrealized Losses	(15)
Available-for-sale, Estimated Fair Value	9,937
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale, Amortized Cost	174,331	116,448
Available-for-sale, Gross Unrealized Gains	15	4
Available-for-sale, Gross Unrealized Losses	(5,585)	(1,585)
Available-for-sale, Estimated Fair Value	$ 168,761	$ 114,867

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Securities - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018 USD ($) Holdings	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) Holdings
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Maximum percentage of equity of one issuer	10.00%
Number of holdings greater than specified percentage of equity | Holdings	0		0
Equities securities	$ 12,784,000		$ 13,457,000
Securities with aggregate fair values	1,900,000,000		1,400,000,000
Net unrealized losses on available-for-sale debt securities included in AOCI	47,300,000		13,300,000
Sales of available-for-sale debt securities	82,100,000	$ 7,800,000
Impairment loss relating to securities	0
Federal home loan bank stock, Total	53,800,000		$ 45,900,000
Grantor Trusts [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Equities securities	$ 8,500,000

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Securities - Schedule of Fair Value of Available-for-Sale and Held-to-Maturity Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, One Year or less	$ 37,718
Total available-for-sale securities, One to Five Years	88,470
Total available-for-sale securities, Five to Ten Years	96,768
Total available-for-sale securities, After Ten Years	66,730
Total available-for-sale securities, Mortgage-backed	1,718,546
Available-for-sale, Estimated Fair Value	2,008,232	$ 1,261,865
Total held-to-maturity securities, One Year or less	6,149
Total held-to-maturity securities, One to Five Years	146,158
Total held-to-maturity securities, Five to Ten Years	413,065
Total held-to-maturity securities, After Ten Years	290,572
Total held-to-maturity securities, Mortgage-backed	158,417
Held-to-maturity securities, Fair value	1,014,361	1,023,784
Total, One Year or less	43,867
Total, One to Five Years	234,628
Total, Five to Ten Years	509,833
Total, After Ten Years, Fair value	357,302
Total, Mortgage-backed	1,876,963
Total, Fair value	3,022,593	2,285,649
US Treasury Securities [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, One Year or less	9,937
Available-for-sale, Estimated Fair Value	9,937
U.S. Government Sponsored Entities and Agencies [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, One Year or less	10,479
Total available-for-sale securities, One to Five Years	6,260
Total available-for-sale securities, Five to Ten Years	17,881
Total available-for-sale securities, After Ten Years	15,298
Total available-for-sale securities, Mortgage-backed	100,031
Available-for-sale, Estimated Fair Value	149,949	71,843
Total held-to-maturity securities, Mortgage-backed	11,084
Held-to-maturity securities, Fair value	11,084	11,140
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, Mortgage-backed	1,449,754
Available-for-sale, Estimated Fair Value	1,449,754	934,922
Total held-to-maturity securities, Mortgage-backed	147,333
Held-to-maturity securities, Fair value	147,333	167,960
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Total available-for-sale securities, Mortgage-backed	168,761
Available-for-sale, Estimated Fair Value	168,761	114,867
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	9,288
Total available-for-sale securities, One to Five Years	48,959
Total available-for-sale securities, Five to Ten Years	76,972
Total available-for-sale securities, After Ten Years	51,432
Available-for-sale, Estimated Fair Value	186,651	104,830
Total held-to-maturity securities, One Year or less	6,149
Total held-to-maturity securities, One to Five Years	138,709
Total held-to-maturity securities, Five to Ten Years	387,775
Total held-to-maturity securities, After Ten Years	290,572
Held-to-maturity securities, Fair value	823,205	810,410
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	8,014
Total available-for-sale securities, One to Five Years	33,251
Total available-for-sale securities, Five to Ten Years	1,915
Available-for-sale, Estimated Fair Value	43,180	35,403
Total held-to-maturity securities, One to Five Years	7,449
Total held-to-maturity securities, Five to Ten Years	25,290
Held-to-maturity securities, Fair value	$ 32,739	$ 34,274

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Securities - Schedule of Fair Value of Available-for-Sale and Held-to-Maturity Debt Securities by Contractual Maturity (Parenthetical) (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Amortized Cost and Fair Value Debt Securities [Abstract]
Held-to-maturity, Amortized Cost	$ 1,025,538	$ 1,009,500

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Securities - Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities as well as Gains and Losses on Equity Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Available-for-Sale Securities, Gross Unrealized Gain (Loss) [Line Items]
Net securities gains	$ 84	$ 6	$ 403	$ 511
Debt Securities [Member]
Available-for-Sale Securities, Gross Unrealized Gain (Loss) [Line Items]
Gross realized gains	88	29	100	603
Gross realized losses	(13)	(23)	(31)	(92)
Net gains on debt securities	75	$ 6	69	$ 511
Equity Securities [Member]
Available-for-Sale Securities, Gross Unrealized Gain (Loss) [Line Items]
Unrealized gains recognized on securities still held	11		330
Net realized (losses) gains recognized on securities sold	(2)		4
Net gains on equity securities	$ 9		$ 334

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Securities - Schedule of Unrealized Losses on Debt Securities (Detail) $ in Thousands	Sep. 30, 2018 USD ($) Security	Dec. 31, 2017 USD ($) Security
US Treasury Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 9,937
Less than 12 months, Unrealized Losses	$ (15)
Less than 12 months, Number of Securities | Security	1
Fair Value, Total	$ 9,937
Unrealized Losses, Total	$ (15)
Number of Securities Total | Security	1
U.S. Government Sponsored Entities and Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 93,881	$ 24,776
Less than 12 months, Unrealized Losses	$ (2,264)	$ (160)
Less than 12 months, Number of Securities | Security	38	4
12 months or more, Fair Value	$ 60,410	$ 42,248
12 months or more, Unrealized Losses	$ (2,473)	$ (771)
12 months or more, Number of Securities | Security	11	8
Fair Value, Total	$ 154,291	$ 67,024
Unrealized Losses, Total	$ (4,737)	$ (931)
Number of Securities Total | Security	49	12
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 759,415	$ 423,794
Less than 12 months, Unrealized Losses	$ (13,670)	$ (5,039)
Less than 12 months, Number of Securities | Security	188	87
12 months or more, Fair Value	$ 822,774	$ 637,461
12 months or more, Unrealized Losses	$ (43,971)	$ (16,977)
12 months or more, Number of Securities | Security	260	193
Fair Value, Total	$ 1,582,189	$ 1,061,255
Unrealized Losses, Total	$ (57,641)	$ (22,016)
Number of Securities Total | Security	448	280
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 79,056	$ 79,061
Less than 12 months, Unrealized Losses	$ (1,239)	$ (1,089)
Less than 12 months, Number of Securities | Security	15	10
12 months or more, Fair Value	$ 86,703	$ 27,852
12 months or more, Unrealized Losses	$ (4,346)	$ (496)
12 months or more, Number of Securities | Security	11	6
Fair Value, Total	$ 165,759	$ 106,913
Unrealized Losses, Total	$ (5,585)	$ (1,585)
Number of Securities Total | Security	26	16
Obligations of State and Political Subdivisions [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 493,252	$ 132,831
Less than 12 months, Unrealized Losses	$ (7,866)	$ (852)
Less than 12 months, Number of Securities | Security	855	210
12 months or more, Fair Value	$ 120,843	$ 77,554
12 months or more, Unrealized Losses	$ (4,172)	$ (1,217)
12 months or more, Number of Securities | Security	236	160
Fair Value, Total	$ 614,095	$ 210,385
Unrealized Losses, Total	$ (12,038)	$ (2,069)
Number of Securities Total | Security	1,091	370
Corporate Debt Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 42,816	$ 4,015
Less than 12 months, Unrealized Losses	$ (738)	$ (19)
Less than 12 months, Number of Securities | Security	17	1
12 months or more, Fair Value	$ 1,915	$ 1,948
12 months or more, Unrealized Losses	$ (74)	$ (40)
12 months or more, Number of Securities | Security	1	1
Fair Value, Total	$ 44,731	$ 5,963
Unrealized Losses, Total	$ (812)	$ (59)
Number of Securities Total | Security	18	2
Total Temporarily Impaired Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 1,478,357	$ 664,477
Less than 12 months, Unrealized Losses	$ (25,792)	$ (7,159)
Less than 12 months, Number of Securities | Security	1,114	312
12 months or more, Fair Value	$ 1,092,645	$ 787,063
12 months or more, Unrealized Losses	$ (55,036)	$ (19,501)
12 months or more, Number of Securities | Security	519	368
Fair Value, Total	$ 2,571,002	$ 1,451,540
Unrealized Losses, Total	$ (80,828)	$ (26,660)
Number of Securities Total | Security	1,633	680

XML

Loans and the Allowance for Credit Losses - Additional Information (Detail)			3 Months Ended	9 Months Ended	12 Months Ended
	Aug. 20, 2018 USD ($)	Apr. 05, 2018 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) Contract	Dec. 31, 2017 USD ($) Contract
Financing Receivable, Recorded Investment [Line Items]
Deferred loan (costs) and fees				$ 2,800,000	$ 1,600,000
Unamortized discount on purchased loans from acquisitions				54,300,000	21,900,000
Aggregate amount of residential real estate, home equity and consumer loans classified as substandard				20,600,000	22,800,000
Internally assigned loan grades to residential real estate, home equity and consumer loans				2,200,000	2,500,000
Loans acquired with deteriorated credit quality				$ 11,041,000	$ 8,074,000
Number of restructured contracts greater than $0 million | Contract				0	0
Threshold for TDR				$ 1,000,000	$ 1,000,000
Accruing and non accrual TDR permitted interest-only payment period				3 months
Unfunded commitments to debtors for impaired loans				$ 200,000	100,000
Other real estate owned				6,836,000	5,195,000
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans acquired with deteriorated credit quality				777,000	783,000
Maximum [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Annual sales of borrowers				100,000,000
First Sentry Bancshares, Inc. [Member]
Financing Receivable, Recorded Investment [Line Items]
Unamortized discount on purchased loans from acquisitions				6,700,000
Portfolio loans, net of unearned income		$ 465,900,000
Fair value of acquired loans		448,075,000
Fair market value adjustment of acquired loans		440,100,000
Fair market value adjustment of acquired loans		9,700,000
Loans acquired with deteriorated credit quality		4,100,000		1,700,000
Loans acquired with deteriorated credit quality, fair value		2,000,000
Loans acquired with deteriorated credit quality outstanding customer balance				3,800,000
Acquired impaired loans allowances for loan losses				0
Acquired loans, sold book value			$ 17,700,000	4,000,000
Acquired loans, transferred to loans held for sale fair value				2,800,000
Acquired loans, sold			$ 12,900,000
First Sentry Bancshares, Inc. [Member] | Cost Recovery Method [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans acquired with deteriorated credit quality, fair value		$ 700,000
Farmers Capital Bank Corporation [Member]
Financing Receivable, Recorded Investment [Line Items]
Unamortized discount on purchased loans from acquisitions				25,900,000
Portfolio loans, net of unearned income	$ 1,064,800,000
Fair value of acquired loans	1,028,120,000
Fair market value adjustment of acquired loans	1,016,900,000
Fair market value adjustment of acquired loans	26,400,000
Loans acquired with deteriorated credit quality	2,700,000			2,100,000
Loans acquired with deteriorated credit quality, fair value	$ 2,400,000
Loans acquired with deteriorated credit quality outstanding customer balance				2,400,000
Acquired impaired loans allowances for loan losses				0
Acquired loans, sold book value				45,200,000
Acquired loans, transferred to loans held for sale fair value				35,200,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans acquired with deteriorated credit quality				2,930,000	714,000
Other real estate owned				700,000	1,500,000
Foreclosure proceedings in process on residential real estate loans				$ 6,000,000	$ 3,500,000

XML

Loans and the Allowance for Credit Losses - Schedule of Recorded Investment in Loans by Category (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 7,726,423	$ 6,341,441
Loans held for sale	55,913	20,320
Total loans	7,782,336	6,361,761
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	538,922	392,597
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	3,367,299	2,601,851
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,292,073	1,125,327
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	3,906,221	2,994,448
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,598,477	1,353,301
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	325,546	339,169
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 604,106	$ 529,196

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Loans and the Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			$ 45,284	$ 43,674
Allowance for loan commitments, beginning balance			574	571
Total beginning allowance for credit losses			45,858	44,245
Provision for loan losses			4,801	7,534
Provision for loan commitments			110	76
Total provision for credit losses	$ 1,035	$ 2,516	4,911	7,610
Charge-offs			(6,751)	(9,000)
Recoveries			5,568	3,279
Net charge-offs			(1,183)	(5,721)
Allowance for loan losses, ending balance	48,902	45,487	48,902	45,487
Allowance for loan commitments, ending balance	684	647	684	647
Total ending allowance for credit losses	49,586	46,134	49,586	46,134
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			3,117	4,348
Allowance for loan commitments, beginning balance			119	151
Total beginning allowance for credit losses			3,236	4,499
Provision for loan losses			789	415
Provision for loan commitments			67	(18)
Total provision for credit losses			856	397
Charge-offs			(137)
Recoveries			400	89
Net charge-offs			263	89
Allowance for loan losses, ending balance	4,169	4,852	4,169	4,852
Allowance for loan commitments, ending balance	186	133	186	133
Total ending allowance for credit losses	4,355	4,985	4,355	4,985
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			21,166	18,628
Allowance for loan commitments, beginning balance			26	17
Total beginning allowance for credit losses			21,192	18,645
Provision for loan losses			(721)	1,619
Provision for loan commitments			(3)	4
Total provision for credit losses			(724)	1,623
Charge-offs			(719)	(1,752)
Recoveries			1,098	492
Net charge-offs			379	(1,260)
Allowance for loan losses, ending balance	20,824	18,987	20,824	18,987
Allowance for loan commitments, ending balance	23	21	23	21
Total ending allowance for credit losses	20,847	19,008	20,847	19,008
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			9,414	8,412
Allowance for loan commitments, beginning balance			173	188
Total beginning allowance for credit losses			9,587	8,600
Provision for loan losses			2,538	2,842
Provision for loan commitments			32	45
Total provision for credit losses			2,570	2,887
Charge-offs			(871)	(2,255)
Recoveries			970	649
Net charge-offs			99	(1,606)
Allowance for loan losses, ending balance	12,051	9,648	12,051	9,648
Allowance for loan commitments, ending balance	205	233	205	233
Total ending allowance for credit losses	12,256	9,881	12,256	9,881
Deposit Overdraft [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			821	760
Total beginning allowance for credit losses			821	760
Provision for loan losses			840	680
Total provision for credit losses			840	680
Charge-offs			(941)	(947)
Recoveries			277	267
Net charge-offs			(664)	(680)
Allowance for loan losses, ending balance	997	760	997	760
Total ending allowance for credit losses	997	760	997	760
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			3,206	4,106
Allowance for loan commitments, beginning balance			7	9
Total beginning allowance for credit losses			3,213	4,115
Provision for loan losses			1,106	(203)
Provision for loan commitments			2
Total provision for credit losses			1,108	(203)
Charge-offs			(873)	(797)
Recoveries			336	266
Net charge-offs			(537)	(531)
Allowance for loan losses, ending balance	3,775	3,372	3,775	3,372
Allowance for loan commitments, ending balance	9	9	9	9
Total ending allowance for credit losses	3,784	3,381	3,784	3,381
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			3,063	3,998
Allowance for loan commitments, beginning balance			37	44
Total beginning allowance for credit losses			3,100	4,042
Provision for loan losses			541	922
Provision for loan commitments			3	(4)
Total provision for credit losses			544	918
Charge-offs			(2,465)	(2,877)
Recoveries			1,657	1,336
Net charge-offs			(808)	(1,541)
Allowance for loan losses, ending balance	2,796	3,379	2,796	3,379
Allowance for loan commitments, ending balance	40	40	40	40
Total ending allowance for credit losses	2,836	3,419	2,836	3,419
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance			4,497	3,422
Allowance for loan commitments, beginning balance			212	162
Total beginning allowance for credit losses			4,709	3,584
Provision for loan losses			(292)	1,259
Provision for loan commitments			9	49
Total provision for credit losses			(283)	1,308
Charge-offs			(745)	(372)
Recoveries			830	180
Net charge-offs			85	(192)
Allowance for loan losses, ending balance	4,290	4,489	4,290	4,489
Allowance for loan commitments, ending balance	221	211	221	211
Total ending allowance for credit losses	$ 4,511	$ 4,700	$ 4,511	$ 4,700

XML

Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment		$ 388
Allowance for loans collectively evaluated for impairment	$ 48,902	44,896
Allowance for loan commitments	684	574	$ 647	$ 571
Total allowance for credit losses	49,586	45,858	46,134	44,245
Individually evaluated for impairment		3,344
Collectively evaluated for impairment	7,715,382	6,330,023
Acquired with deteriorated credit quality	11,041	8,074
Total loans	7,726,423	6,341,441
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	4,169	3,117
Allowance for loan commitments	186	119	133	151
Total allowance for credit losses	4,355	3,236	4,985	4,499
Collectively evaluated for impairment	537,699	391,140
Acquired with deteriorated credit quality	1,223	1,457
Total loans	538,922	392,597
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment		388
Allowance for loans collectively evaluated for impairment	20,824	20,778
Allowance for loan commitments	23	26	21	17
Total allowance for credit losses	20,847	21,192	19,008	18,645
Individually evaluated for impairment		3,344
Collectively evaluated for impairment	3,361,315	2,593,393
Acquired with deteriorated credit quality	5,984	5,114
Total loans	3,367,299	2,601,851
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	12,051	9,414
Allowance for loan commitments	205	173	233	188
Total allowance for credit losses	12,256	9,587	9,881	8,600
Collectively evaluated for impairment	1,291,296	1,124,544
Acquired with deteriorated credit quality	777	783
Total loans	1,292,073	1,125,327
Deposit Overdraft [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	997	821
Total allowance for credit losses	997	821	760	760
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	3,775	3,206
Allowance for loan commitments	9	7	9	9
Total allowance for credit losses	3,784	3,213	3,381	4,115
Collectively evaluated for impairment	1,595,547	1,352,587
Acquired with deteriorated credit quality	2,930	714
Total loans	1,598,477	1,353,301
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	2,796	3,063
Allowance for loan commitments	40	37	40	44
Total allowance for credit losses	2,836	3,100	3,419	4,042
Collectively evaluated for impairment	325,419	339,163
Acquired with deteriorated credit quality	127	6
Total loans	325,546	339,169
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	4,290	4,497
Allowance for loan commitments	221	212	211	162
Total allowance for credit losses	4,511	4,709	$ 4,700	$ 3,584
Collectively evaluated for impairment	604,106	529,196
Total loans	$ 604,106	$ 529,196

XML

Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Parenthetical) (Detail) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Troubled debt restructuring threshold	$ 1	$ 1

XML

Loans and the Allowance for Credit Losses - Summary of Commercial Loans by Risk Grade (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Summary of commercial loans by risk grade
Commercial loans	$ 7,677,521	$ 6,296,157
Commercial Portfolio Segment [Member]
Summary of commercial loans by risk grade
Commercial loans	5,198,294	4,119,775
Commercial Portfolio Segment [Member] | Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	5,120,487	4,045,825
Commercial Portfolio Segment [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Commercial loans	46,370	36,092
Commercial Portfolio Segment [Member] | Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	31,437	37,858
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member]
Summary of commercial loans by risk grade
Commercial loans	538,922	392,597
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member] | Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	533,982	386,753
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Commercial loans	2,909	2,984
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member] | Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	2,031	2,860
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member]
Summary of commercial loans by risk grade
Commercial loans	3,367,299	2,601,851
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member] | Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	3,314,324	2,548,805
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Commercial loans	31,399	25,673
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member] | Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	21,576	27,373
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Summary of commercial loans by risk grade
Commercial loans	1,292,073	1,125,327
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Pass [Member]
Summary of commercial loans by risk grade
Commercial loans	1,272,181	1,110,267
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Commercial loans	12,062	7,435
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Classified - Substandard [Member]
Summary of commercial loans by risk grade
Commercial loans	$ 7,830	$ 7,625

XML

Loans and the Allowance for Credit Losses - Summary of Changes in Accretable Yield for Loans Acquired with Deteriorated Credit Quality (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period [Abstract]
Balance at beginning of period	$ 1,724	$ 1,717
Acquisitions	695
Reduction due to change in projected cash flows	(86)
Reclass from non-accretable difference	6,287	1,490
Transfers out		(216)
Accretion	(902)	(1,384)
Balance at end of period	$ 7,718	$ 1,607

XML

Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Current	$ 7,681,491	$ 6,299,397
Total Past Due	44,932	42,044
Total loans	7,726,423	6,341,441
90 Days or More Past Due and Accruing	2,451	2,726
Loans held for sale, current	55,913	20,320
Loans held for sale	55,913	20,320
Total loans, current	7,737,404	6,319,717
Total loans	7,782,336	6,361,761
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	596,477	522,584
Total Past Due	7,629	6,612
Total loans	604,106	529,196
90 Days or More Past Due and Accruing	646	742
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	3,896,064	2,981,893
Total Past Due	10,157	12,555
Total loans	3,906,221	2,994,448
90 Days or More Past Due and Accruing	88	243
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	1,579,164	1,338,240
Total Past Due	19,313	15,061
Total loans	1,598,477	1,353,301
90 Days or More Past Due and Accruing	1,225	1,113
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	322,093	334,723
Total Past Due	3,453	4,446
Total loans	325,546	339,169
90 Days or More Past Due and Accruing	378	608
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	538,181	392,189
Total Past Due	741	408
Total loans	538,922	392,597
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	3,357,883	2,589,704
Total Past Due	9,416	12,147
Total loans	3,367,299	2,601,851
90 Days or More Past Due and Accruing	88	243
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	1,287,693	1,121,957
Total Past Due	4,380	3,370
Total loans	1,292,073	1,125,327
90 Days or More Past Due and Accruing	114	20
Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	7,480	9,195
Total Past Due	23,794	27,630
Total loans	31,274	36,825
TDRs Accruing Interest [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	5,667	6,055
Total Past Due	671	516
Total loans	6,338	6,571
Total Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Current	13,147	15,250
Total Past Due	24,465	28,146
Total loans	37,612	43,396
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	16,338	10,034
30-59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	2,871	2,135
30-59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	2,300	374
30-59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	8,100	4,487
30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	2,291	2,466
30-59 Days Past Due [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	643
30-59 Days Past Due [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,657	374
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	776	572
30-59 Days Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,653	1,782
30-59 Days Past Due [Member] | TDRs Accruing Interest [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	314	348
30-59 Days Past Due [Member] | Total Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,967	2,130
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	5,227	5,469
60-89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,002	683
60-89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	450	1,372
60-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	2,708	2,376
60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	605	842
60-89 Days Past Due [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	98	172
60-89 Days Past Due [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	352	1,200
60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	462	196
60-89 Days Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,225	2,033
60-89 Days Past Due [Member] | TDRs Accruing Interest [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	357	168
60-89 Days Past Due [Member] | Total Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,582	2,201
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	23,367	26,541
90 Days or More Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	3,756	3,794
90 Days or More Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	7,407	10,809
90 Days or More Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	8,505	8,198
90 Days or More Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	557	1,138
90 Days or More Past Due [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due		236
90 Days or More Past Due [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	7,407	10,573
90 Days or More Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	3,142	2,602
90 Days or More Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	20,916	23,815
90 Days or More Past Due [Member] | Total Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	$ 20,916	$ 23,815

XML

Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Past due loans excluded TDRs past due and accruing	90 days

XML

Loans and the Allowance for Credit Losses - Summary of Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	$ 46,158		$ 46,158		$ 50,124
Total impaired loans, Unpaid principal balance	46,158		46,158		52,229
Recorded Investment, With no specific allowance recorded	37,612		37,612		41,291
Total impaired loans, Recorded investment	37,612		37,612		43,396
Unpaid Principal Balance, With a specific allowance recorded					2,105
Recorded Investment, With a specific allowance recorded					2,105
Related Allowance, With a specific allowance recorded					388
Average recorded investment, with no related specific allowance	37,542	$ 37,452	38,225	$ 37,432
Interest income recognized, With no related specific allowance	99	96	614	617
Average recorded investment, With a specific allowance recorded		5,137	1,052	5,350
Interest income recognized, With a specific allowance recorded	0	0	0	0
Total impaired loans, Average recorded investment	37,542	42,589	39,277	42,782
Total impaired loans, Interest income recognized	99	96	614	617
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	21,226		21,226		20,821
Recorded Investment, With no specific allowance recorded	18,944		18,944		18,982
Average recorded investment, with no related specific allowance	18,336	17,039	18,207	17,743
Interest income recognized, With no related specific allowance	68	57	195	192
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	857		857		1,084
Recorded Investment, With no specific allowance recorded	685		685		952
Average recorded investment, with no related specific allowance	692	731	776	746
Interest income recognized, With no related specific allowance	3	2	8	5
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	5,550		5,550		5,833
Recorded Investment, With no specific allowance recorded	4,728		4,728		5,169
Average recorded investment, with no related specific allowance	4,924	4,727	4,997	4,456
Interest income recognized, With no related specific allowance	8	4	19	14
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded					412
Recorded Investment, With no specific allowance recorded					239
Average recorded investment, with no related specific allowance		444	260	516
Interest income recognized, With a specific allowance recorded	0	0	0	0
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	14,639		14,639		18,229
Recorded Investment, With no specific allowance recorded	9,928		9,928		12,863
Unpaid Principal Balance, With a specific allowance recorded					2,105
Recorded Investment, With a specific allowance recorded					2,105
Related Allowance, With a specific allowance recorded					388
Average recorded investment, with no related specific allowance	10,409	10,923	11,000	10,271
Interest income recognized, With no related specific allowance	15	31	383	400
Average recorded investment, With a specific allowance recorded		5,137	1,052	5,032
Interest income recognized, With a specific allowance recorded	0	0	0	0
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	3,886		3,886		3,745
Recorded Investment, With no specific allowance recorded	3,327		3,327		$ 3,086
Average recorded investment, with no related specific allowance	3,181	3,588	2,985	3,700
Interest income recognized, With no related specific allowance	5	2	9	6
Average recorded investment, With a specific allowance recorded				318
Interest income recognized, With a specific allowance recorded	$ 0	$ 0	$ 0	$ 0

XML

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans and TDRs (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 31,274	$ 36,825
TDRs	8,374	9,436
Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	6,338	6,571
Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	2,036	2,865
Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans		239
TDRs		3
Commercial Real Estate - Land and Construction [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs		3
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	8,757	13,318
TDRs	1,811	2,078
Commercial Real Estate - Improved Property [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	1,171	1,650
Commercial Real Estate - Improved Property [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	640	428
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	3,165	2,958
TDRs	162	225
Commercial and Industrial [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	162	128
Commercial and Industrial [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs		97
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	4,283	4,762
TDRs	612	744
Home Equity [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	445	407
Home Equity [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	167	337
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	8,757	13,557
TDRs	1,811	2,081
Commercial Real Estate [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	1,171	1,650
Commercial Real Estate [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	640	431
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	14,475	14,661
TDRs	5,651	6,201
Residential Real Estate [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	4,469	4,321
Residential Real Estate [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	1,182	1,880
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	594	887
TDRs	138	185
Consumer [Member] | Accruing TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	91	65
Consumer [Member] | Non-Accrual TDRs [Member]
Financing Receivable, Impaired [Line Items]
TDRs	$ 47	$ 120

XML

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans and TDRs (Parenthetical) (Detail)	Sep. 30, 2018 USD ($) Borrowers	Dec. 31, 2017 USD ($) Borrowers
Receivables [Abstract]
Number of borrowers with loans greater than one million | Borrowers	1	3
Borrowers with large amount of loans outstanding, minimum amount of loans per borrower	$ 1,000,000	$ 1,000,000
Borrowers with large amount of loans outstanding, net	$ 3,400,000	$ 6,800,000

XML

Loans and the Allowance for Credit Losses - Loans Identified as TDRs (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) Contract	Sep. 30, 2017 USD ($) Contract	Sep. 30, 2018 USD ($) Contract	Sep. 30, 2017 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract	1	4	11	11
Pre-Modification Outstanding Recorded Investment	$ 19	$ 291	$ 298	$ 459
Post-Modification Outstanding Recorded Investment	$ 18	$ 279	$ 255	$ 426
Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract		1		1
Pre-Modification Outstanding Recorded Investment		$ 190		$ 190
Post-Modification Outstanding Recorded Investment		$ 185		$ 185
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			1	1
Pre-Modification Outstanding Recorded Investment			$ 10	$ 64
Post-Modification Outstanding Recorded Investment			$ 8	$ 59
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract		1		1
Pre-Modification Outstanding Recorded Investment		$ 190		$ 190
Post-Modification Outstanding Recorded Investment		$ 185		$ 185
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			5	2
Pre-Modification Outstanding Recorded Investment			$ 203	$ 22
Post-Modification Outstanding Recorded Investment			$ 176	$ 17
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract	1	1	4	4
Pre-Modification Outstanding Recorded Investment	$ 19	$ 7	$ 65	$ 42
Post-Modification Outstanding Recorded Investment	$ 18	$ 6	$ 52	$ 33
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract		2	1	3
Pre-Modification Outstanding Recorded Investment		$ 94	$ 20	$ 141
Post-Modification Outstanding Recorded Investment		$ 88	$ 19	$ 132

XML

Loans and the Allowance for Credit Losses - TDRs Defaulted Later Restructured (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($) Defaults	Sep. 30, 2017 USD ($) Defaults
Financing Receivable, Modifications [Line Items]
Number of Defaults | Defaults	3	2
Recorded Investment | $	$ 178	$ 14
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Defaults | Defaults	2	1
Recorded Investment | $	$ 172	$ 7
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Defaults | Defaults		1
Recorded Investment | $		$ 7
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Defaults | Defaults	1
Recorded Investment | $	$ 6

XML

Loans and the Allowance for Credit Losses - Summary of Other Real Estate Owned and Repossessed Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Other real estate owned	$ 6,836	$ 5,195
Repossessed assets	41	102
Total other real estate owned and repossessed assets	$ 6,877	$ 5,297

XML

Derivatives and Hedging Activities - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) Derivative	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Derivative	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional amount	$ 234,400,000		$ 234,400,000		$ 298,200,000
Net gain (loss) on change in fair value	(273,000)	$ (32,000)	480,000	$ (212,000)
Collateral posted with market value on liability positions with credit risk-related contingent features	$ 3,700,000		$ 3,700,000
Interest Rate Swaps [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps | Derivative	42		42		39
Net gain (loss) on change in fair value			$ (100,000)	(300,000)
Income (loss) on derivative instrument not designated hedges			$ 1,400,000	$ 1,200,000

XML

Derivatives and Hedging Activities - Summary of Fair Values of Derivative Instruments on Balance Sheets (Detail) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	$ 234,400,000	$ 298,200,000
Asset Derivatives	6,631,000	7,400,000
Liability Derivatives	6,527,000	7,368,000
Interest Rate Swaps [Member] | Loan Swaps [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	234,363,000	298,223,000
Asset Derivatives	6,451,000	7,351,000
Liability Derivatives	6,527,000	7,345,000
Interest Rate Loan Commitments [Member] | Other Contract [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	27,795,000	20,319,000
Asset Derivatives	32,000	49,000
Forward TBA Contracts [Member] | Other Contract [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	32,000,000	31,750,000
Asset Derivatives	$ 148,000
Liability Derivatives		$ 23,000

XML

Derivatives and Hedging Activities - Summary of Effect of Derivative Instruments on Income Statement (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ (273)	$ (32)	$ 480	$ (212)
Interest Rate Swaps [Member] | Other Income [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	(293)	$ (32)	(82)	(335)
Interest Rate Loan Commitments [Member] | Mortgage Banking Income [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	(111)		32	$ 123
Forward TBA Contracts [Member] | Mortgage Banking Income [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ 131		$ 530

XML

Pension Plan - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost - benefits earned during year	$ 715	$ 650	$ 2,121	$ 1,929
Interest cost on projected benefit obligation	1,242	1,107	3,684	3,287
Expected return on plan assets	(2,416)	(1,928)	(7,169)	(5,721)
Amortization of prior service cost	6	7	19	19
Amortization of net loss	766	812	2,274	2,409
Net periodic pension cost	$ 313	$ 648	$ 929	$ 1,923

XML

Pension Plan - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Aug. 20, 2018	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum required pension plan contribution	$ 5,100,000		$ 5,100,000
Voluntary contribution			56,900,000
Available credit balance						$ 2,500,000
Net periodic pension income	313,000	$ 648,000	929,000	$ 1,923,000
Expected return on plan assets	2,416,000	1,928,000	7,169,000	5,721,000
Interest cost on projected benefit obligation	1,242,000	$ 1,107,000	3,684,000	$ 3,287,000
Farmers Capital Bank Corporation [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Postretirement medical benefit plan	9,500,000		$ 9,500,000		$ 15,000,000
Life of the plan			17 years
Defined benefit plan, Unrealized gain			$ 5,500,000
Pentegra Defined Benefit Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum required pension plan contribution	0		0
Voluntary contribution			200,000
Net periodic pension income	100,000		200,000
Expected return on plan assets	200,000		500,000
Interest cost on projected benefit obligation	$ 100,000		$ 300,000

XML

Fair Value Measurement - Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 12,784	$ 13,457
Total debt securities - available-for-sale	2,008,232	1,261,865
Loans held for sale	55,913	20,320
Other real estate owned and repossessed assets	6,877	5,297
Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	12,784	13,457
Total debt securities - available-for-sale	2,008,232	1,261,865
Loans held for sale	55,913	20,320
Other assets - interest rate derivatives agreements	6,451	7,351
Total assets recurring fair value measurements	2,083,380	1,302,993
Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities - interest rate derivatives agreements	6,527	7,345
Total liabilities recurring fair value measurements	6,527	7,345
Impaired loans		1,717
Other real estate owned and repossessed assets	6,877	5,297
Total assets recurring fair value measurements	6,877	7,014
US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	9,937
US Treasury Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	9,937
U.S. Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	149,949	71,843
U.S. Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	149,949	71,843
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	1,449,754	934,922
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	1,449,754	934,922
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	168,761	114,867
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	168,761	114,867
Obligations of State and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	186,651	104,830
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 debt securities - available-for-sale	186,651	104,830
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	43,180	35,403
Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	43,180	35,403
Investments Measured at Net Asset Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		2,066
Investments Measured at Net Asset Value [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	2,066
Total debt securities - available-for-sale	0	0
Loans held for sale	0	0
Other assets - interest rate derivatives agreements	0	0
Total assets recurring fair value measurements	0	2,066
Investments Measured at Net Asset Value [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities - interest rate derivatives agreements	0	0
Total liabilities recurring fair value measurements	0	0
Impaired loans	0	0
Other real estate owned and repossessed assets	0	0
Total assets recurring fair value measurements	0	0
Investments Measured at Net Asset Value [Member] | US Treasury Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0
Investments Measured at Net Asset Value [Member] | U.S. Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Investments Measured at Net Asset Value [Member] | Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Investments Measured at Net Asset Value [Member] | Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Investments Measured at Net Asset Value [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 debt securities - available-for-sale	0	0
Investments Measured at Net Asset Value [Member] | Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	12,784	11,391
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]
Equity securities	12,784	11,391
Total debt securities - available-for-sale	0	0
Loans held for sale	0	0
Other assets - interest rate derivatives agreements	0	0
Total assets recurring fair value measurements	12,784	11,391
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities - interest rate derivatives agreements	0	0
Total liabilities recurring fair value measurements	0	0
Impaired loans	0	0
Other real estate owned and repossessed assets	0	0
Total assets recurring fair value measurements	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | US Treasury Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [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 debt securities - available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities - interest rate derivatives agreements	6,527	7,345
Total debt securities - available-for-sale	2,006,706	1,261,865
Loans held for sale	55,913	20,320
Other assets - interest rate derivatives agreements	6,451	7,351
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]
Equity securities	0	0
Total debt securities - available-for-sale	2,006,706	1,261,865
Loans held for sale	55,913	20,320
Other assets - interest rate derivatives agreements	6,451	7,351
Total assets recurring fair value measurements	2,069,070	1,289,536
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]
Other liabilities - interest rate derivatives agreements	6,527	7,345
Total liabilities recurring fair value measurements	6,527	7,345
Impaired loans	0	0
Other real estate owned and repossessed assets	0	0
Total assets recurring fair value measurements	0	0
Significant Other Observable Inputs (Level 2) [Member] | US Treasury Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	9,937
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	149,949	71,843
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	1,449,754	934,922
Significant Other Observable Inputs (Level 2) [Member] | Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	168,761	114,867
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 debt securities - available-for-sale	185,125	104,830
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 debt securities - available-for-sale	43,180	35,403
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	1,526
Significant Unobservable Inputs (Level 3) [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Total debt securities - available-for-sale	1,526	0
Loans held for sale	0	0
Other assets - interest rate derivatives agreements	0	0
Total assets recurring fair value measurements	1,526	0
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other liabilities - interest rate derivatives agreements	0	0
Total liabilities recurring fair value measurements	0	0
Impaired loans	0	1,717
Other real estate owned and repossessed assets	6,877	5,297
Total assets recurring fair value measurements	6,877	7,014
Significant Unobservable Inputs (Level 3) [Member] | US Treasury Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [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 debt securities - available-for-sale	1,526	0
Significant Unobservable Inputs (Level 3) [Member] | Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities - available-for-sale	$ 0	$ 0

XML

Fair Value Measurement - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair value transfer amount	$ 0	$ 0	$ 0

XML

Fair Value Measurement - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Fair Value Inputs Asset Quantitative Information [Line Items]
Other real estate owned and repossessed assets	$ 6,877	$ 5,297
Impaired loans, Appraisal adjustments	0.00%	(4.80%)
Impaired loans, Liquidation expenses	0.00%	(7.60%)
Nonrecurring Fair Value Measurements [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Impaired loans		$ 1,717
Other real estate owned and repossessed assets	$ 6,877	5,297
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Impaired loans	0	1,717
Other real estate owned and repossessed assets	$ 6,877	$ 5,297
Weighted Average [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Impaired loans, Appraisal adjustments	0.00%	(4.80%)
Impaired loans, Liquidation expenses	0.00%	(7.60%)

XML

Fair Value Measurement - Estimates Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financial Assets
Cash and due from banks	$ 273,680	$ 117,572
Equity securities	12,784	13,457
Debt securities available-for-sale	2,008,232	1,261,865
Debt securities held-to-maturity	1,025,538	1,009,500
Net loans	7,677,521	6,296,157
Loans held for sale	55,913	20,320
Accrued interest receivable	39,465	29,728
Financial Liabilities
Deposits	8,941,758	7,043,588
Federal Home Loan Bank borrowings	1,131,253	948,203
Other borrowings	294,281	184,805
Subordinated debt and junior subordinated debt	189,745	164,327
Accrued interest payable	6,623	3,178
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets
Cash and due from banks	273,680	117,572
Equity securities	12,784	11,391
Accrued interest receivable	39,465	29,728
Financial Liabilities
Deposits	7,428,158	5,766,531
Other borrowings	292,290	182,785
Accrued interest payable	6,623	3,178
Significant Other Observable Inputs (Level 2) [Member]
Financial Assets
Debt securities available-for-sale	2,006,706	1,261,865
Debt securities held-to-maturity	1,013,788	1,023,191
Loans held for sale	55,913	20,320
Other assets - interest rate derivatives	6,451	7,351
Financial Liabilities
Deposits	1,532,063	1,287,005
Federal Home Loan Bank borrowings	1,123,441	944,706
Other borrowings	1,995	2,029
Subordinated debt and junior subordinated debt	179,497	146,484
Other liabilities - interest rate derivatives	6,527	7,345
Significant Unobservable Inputs (Level 3) [Member]
Financial Assets
Debt securities available-for-sale	1,526
Debt securities held-to-maturity	573	593
Net loans	7,517,958	6,212,823
Carrying Amount [Member]
Financial Assets
Cash and due from banks	273,680	117,572
Equity securities	12,784	13,457
Debt securities available-for-sale	2,008,232	1,261,865
Debt securities held-to-maturity	1,025,538	1,009,500
Net loans	7,677,521	6,296,157
Loans held for sale	55,913	20,320
Other assets - interest rate derivatives	6,451	7,351
Accrued interest receivable	39,465	29,728
Financial Liabilities
Deposits	8,941,758	7,043,588
Federal Home Loan Bank borrowings	1,131,253	948,203
Other borrowings	294,281	184,805
Subordinated debt and junior subordinated debt	189,745	164,327
Other liabilities - interest rate derivatives	6,527	7,345
Accrued interest payable	6,623	3,178
Fair Value Estimate [Member]
Financial Assets
Cash and due from banks	273,680	117,572
Equity securities	12,784	13,457
Debt securities available-for-sale	2,008,232	1,261,865
Debt securities held-to-maturity	1,014,361	1,023,784
Net loans	7,517,958	6,212,823
Loans held for sale	55,913	20,320
Other assets - interest rate derivatives	6,451	7,351
Accrued interest receivable	39,465	29,728
Financial Liabilities
Deposits	8,960,221	7,053,536
Federal Home Loan Bank borrowings	1,123,441	944,706
Other borrowings	294,285	184,814
Subordinated debt and junior subordinated debt	179,497	146,484
Other liabilities - interest rate derivatives	6,527	7,345
Accrued interest payable	$ 6,623	3,178
Investments Measured at Net Asset Value [Member]
Financial Assets
Equity securities		$ 2,066

XML

Revenue Recognition - Summary of Revenue Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	$ 1,836	$ 1,721	$ 5,315	$ 5,164
Allotment fees	311		311
Electronic banking fees	6,139	4,883	16,697	14,395
Mortgage banking income	1,521	1,103	4,297	3,511
Net gain or loss on sale of other real estate owned	150	(298)	641	9
Total Service Charges on Deposits [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	6,313		$ 16,282
Trust Account Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			Over time
Total trust fees/Total service charges on deposits	4,006		$ 11,856
WesMark Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			Over time
Total trust fees/Total service charges on deposits	2,259		$ 6,664
Total Trust Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	6,265	$ 5,358	$ 18,520	$ 17,073
Commercial Banking Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			Over time
Total trust fees/Total service charges on deposits	563		$ 1,406
Personal Service Charges [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			At a point in time & over time
Total trust fees/Total service charges on deposits	5,750		$ 14,876
Annuity Commissions [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			At a point in time
Total net securities brokerage revenue	1,326		$ 3,836
Equity and Debt Security Trades [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			At a point in time
Total net securities brokerage revenue	116		$ 304
Managed Money [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			Over time
Total net securities brokerage revenue	173		$ 477
Trail Commissions [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			Over time
Total net securities brokerage revenue	$ 221		$ 698
Allotment Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			At a point in time & over time
Electronic Banking Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			At a point in time
Mortgage [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			At a point in time
OREO/other assets [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition			At a point in time

XML

Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 1,395,321	$ 1,341,408
Amounts reclassified from accumulated other comprehensive income	$ 537	$ 471	1,463	1,549
Total other comprehensive income			(27,315)	6,289
Ending Balance	1,927,269	1,394,558	1,927,269	1,394,558
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(18,626)	(17,758)
Acquired FFKT Medical benefit plan			4,235
Amounts reclassified from accumulated other comprehensive income	595	513	1,621	1,679
Total other comprehensive income			5,856	1,679
Ending Balance	(12,770)	(16,079)	(12,770)	(16,079)
Accumulated Unrealized Gains (Losses) on Debt Securities Available for Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(13,250)	(9,890)
Other comprehensive income before reclassifications			(33,013)	4,740
Amounts reclassified from accumulated other comprehensive income	(9)		(9)	35
Total other comprehensive income			(33,022)	4,775
Adoption of Accounting Standard ASU 2016-01	(1,063)		(1,063)
Ending Balance	(47,335)	(5,115)	(47,335)	(5,115)
Accumulated Unrealized Gains on Debt Securities Transferred from Available For Sale to Held to Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			381	522
Amounts reclassified from accumulated other comprehensive income	(49)	(42)	(149)	(165)
Total other comprehensive income			(149)	(165)
Ending Balance	232	357	232	357
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(31,495)	(27,126)
Other comprehensive income before reclassifications			(33,013)	4,740
Acquired FFKT Medical benefit plan			4,235
Amounts reclassified from accumulated other comprehensive income			1,463	1,549
Total other comprehensive income			(27,315)	6,289
Adoption of Accounting Standard ASU 2016-01	(1,063)		(1,063)
Ending Balance	$ (59,873)	$ (20,837)	$ (59,873)	$ (20,837)

XML

Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Percentage of Federal and State income tax rate	23.00%	37.00%

XML

Comprehensive Income/(Loss) - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains (Non-interest income)	$ (84)	$ (6)	$ (403)	$ (511)
Interest and dividends on securities (Interest and dividend income)	(20,290)	(14,573)	(55,918)	(43,299)
Employee benefits (Non-interest expense)	7,905	7,728	22,782	23,670
Provision for income taxes	6,516	10,527	20,855	30,801
Net effect on accumulated other comprehensive income for the period	537	471	1,463	1,549
Accumulated Unrealized Gains (Losses) on Debt Securities Available for Sale [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net effect on accumulated other comprehensive income for the period	(9)		(9)	35
Accumulated Unrealized Gains on Debt Securities Transferred from Available For Sale to Held to Maturity [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net effect on accumulated other comprehensive income for the period	(49)	(42)	(149)	(165)
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net effect on accumulated other comprehensive income for the period	595	513	1,621	1,679
Amounts Reclassified From Accumulated Other Comprehensive Income/(Loss) [Member] | Accumulated Unrealized Gains (Losses) on Debt Securities Available for Sale [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains (Non-interest income)	(11)		(11)	55
Provision for income taxes	2		2	(20)
Amounts Reclassified From Accumulated Other Comprehensive Income/(Loss) [Member] | Accumulated Unrealized Gains on Debt Securities Transferred from Available For Sale to Held to Maturity [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and dividends on securities (Interest and dividend income)	(64)	(66)	(195)	(256)
Provision for income taxes	15	24	46	91
Amounts Reclassified From Accumulated Other Comprehensive Income/(Loss) [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Employee benefits (Non-interest expense)	772	816	2,293	2,429
Provision for income taxes	$ (177)	$ (303)	$ (672)	$ (750)

XML

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Allowance for credit losses associated with loan commitments	$ 684	$ 574	$ 647	$ 571
Liability associated with letters of credit	$ 200	$ 200

XML

Commitments and Contingent Liabilities - Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Lines of credit	$ 1,855,388	$ 1,452,697
Loans approved but not closed	349,173	245,644
Overdraft limits	154,221	126,671
Letters of credit	41,515	31,951
Contingent obligations and other guarantees	$ 5,725	$ 6,700

XML

Business Segments - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2018 USD ($) Segment	Sep. 30, 2017 USD ($)
Segment Reporting Information [Line Items]
Operating segments | Segment	2
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Market value of assets managed or held in custody by trust and investment services segment	$ 4,700.0	$ 3,900.0
Total non-fiduciary assets of the trust and investment services segment	$ 5.1	$ 1.7

XML

Business Segments - Financial Information by Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Interest income	$ 108,393	$ 85,489	$ 293,596	$ 247,573
Interest expense	18,460	11,235	48,127	30,461
Net interest income	89,933	74,254	245,469	217,112
Provision for credit losses	1,035	2,516	4,911	7,610
Net interest income after provision for credit losses	88,898	71,738	240,558	209,502
Non-interest income	26,224	20,899	73,715	65,906
Non-interest expense	76,120	55,754	194,234	166,023
Income before provision for income taxes	39,002	36,883	120,039	109,385
Provision for income taxes	6,516	10,527	20,855	30,801
Net income	32,486	26,356	99,184	78,584
Community Banking [Member]
Segment Reporting Information [Line Items]
Interest income	108,393	85,489	293,596	247,573
Interest expense	18,460	11,235	48,127	30,461
Net interest income	89,933	74,254	245,469	217,112
Provision for credit losses	1,035	2,516	4,911	7,610
Net interest income after provision for credit losses	88,898	71,738	240,558	209,502
Non-interest income	19,959	15,541	55,195	48,833
Non-interest expense	72,378	52,355	183,298	156,102
Income before provision for income taxes	36,479	34,924	112,455	102,233
Provision for income taxes	5,986	9,744	19,262	27,940
Net income	30,493	25,180	93,193	74,293
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Non-interest income	6,265	5,358	18,520	17,073
Non-interest expense	3,742	3,399	10,936	9,921
Income before provision for income taxes	2,523	1,959	7,584	7,152
Provision for income taxes	530	783	1,593	2,861
Net income	$ 1,993	$ 1,176	$ 5,991	$ 4,291