WSFS Financial (WSFS) 10-Q 10 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 04, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	WSFS
Entity Registrant Name	WSFS FINANCIAL CORP
Entity Central Index Key	828,944
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		31,539,507

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest income:
Interest and fees on loans	$ 60,465	$ 54,681
Interest on mortgage-backed securities	5,399	4,395
Interest and dividends on investment securities:
Taxable	17	117
Tax-exempt	1,103	1,132
Other interest income	629	501
Total interest income	67,613	60,826
Interest expense:
Interest on deposits	5,240	3,075
Interest on senior debt	1,179	2,121
Interest on Federal Home Loan Bank advances	2,463	1,858
Interest on federal funds purchased and securities sold under agreements to repurchase	446	201
Interest on trust preferred borrowings	557	446
Interest on other borrowings	14	22
Total interest expense	9,899	7,723
Net interest income	57,714	53,103
Provision for loan losses	3,650	2,162
Net interest income after provision for loan losses	54,064	50,941
Noninterest income:
Credit/debit card and ATM income	9,805	8,131
Investment management and fiduciary income	9,189	8,039
Deposit service charges	4,630	4,397
Mortgage banking activities, net	1,737	1,185
Securities gains, net	21	320
Unrealized gains on equity investments	15,346	0
Loan fee income	599	549
Bank owned life insurance income	232	275
Other income	5,908	5,196
Total non interest income	47,467	28,092
Noninterest expense:
Salaries, benefits and other compensation	29,853	28,836
Occupancy expense	5,248	5,162
Equipment expense	3,089	3,124
Data processing and operations expenses	1,907	1,618
Professional fees	1,725	1,635
Marketing expense	758	624
FDIC expenses	599	529
Loan workout and OREO expenses	426	521
Corporate development expense	0	338
Recovery of fraud loss	(1,665)	0
Other operating expense	11,472	9,119
Total non interest expenses	53,412	51,506
Income before taxes	48,119	27,527
Income tax provision	10,769	8,590
Net income	$ 37,350	$ 18,937
Earnings per share:
Basic (in dollars per share)	$ 1.19	$ 0.60
Diluted (in dollars per share)	$ 1.16	$ 0.59

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net Income	$ 37,350	$ 18,937
Net change in unrealized (loss) gains on investment securities available for sale
Net unrealized (loss) gains arising during the period, net of tax expense of $3,714 and $779, respectively	(11,827)	1,272
Less: reclassification adjustment for net gains on sales realized in net income, net of tax expense of $5 and $114, respectively	(16)	(206)
Net change in unrealized gains (losses) on investment securities available-for-sale	(11,843)	1,066
Net change in securities held to maturity
Amortization of unrealized gain on securities reclassified to held-to-maturity, net of tax expense of $37 and $59, respectively	(119)	(101)
Net change in unfunded pension liability
Change in unfunded pension liability related to unrealized gain (loss), prior service cost and transition obligation, net of tax benefit of ($11) and ($12), respectively	59	(23)
Net change in cash flow hedge
Net unrealized loss arising during the period, net of tax benefit of ($240) and ($69), respectively	(765)	(112)
Total other comprehensive (loss) income	(12,668)	830
Total comprehensive income	$ 24,682	$ 19,767

CONSOLIDATED STATEMENTS OF COM4

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net change in Unrealized (losses) gains, tax (benefit) expense	$ 3,714	$ 779
Reclassification adjustment for gains, tax expense	5	114
Amortization of unrealized gain on securities reclassified to held-to-maturity, tax expense	37	59
Change in unfunded pension liability related to unrealized (loss) gain, prior service cost and transition obligation, tax (benefit) expense	(11)	(12)
Reclassification adjustment related to derivatives, tax benefit (expense)	$ (240)	$ (69)

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 128,799	$ 122,141
Cash in non-owned ATMs	577,561	598,117
Interest-bearing deposits in other banks including collateral of $4,500 and $3,380 at March 31, 2018 and December 31, 2017, respectively	4,729	3,608
Total cash and cash equivalents	711,089	723,866
Investment securities, available for sale (amortized cost of $933,678 at March 31, 2018 and $847,791 at December 31, 2017)	907,818	837,499
Investment securities, held to maturity-at cost (fair value of $159,164 at March 31, 2018 and $162,853 at December 31, 2017)	159,672	161,186
Other investments	33,363	17,971
Loans, held for sale at fair value	15,937	31,055
Loans, net of allowance for loan losses of $40,810 at March 31, 2018 and $40,599 at December 31, 2017	4,805,758	4,776,318
Bank owned life insurance	5,746	102,958
Stock in Federal Home Loan Bank of Pittsburgh at cost	28,854	31,284
Other real estate owned	2,567	2,503
Accrued interest receivable	19,969	19,405
Premises and equipment	48,168	47,983
Goodwill	166,007	166,007
Intangible assets	21,783	22,437
Other assets	61,200	59,068
Total assets	6,987,931	6,999,540
Deposits:
Noninterest-bearing	1,372,271	1,420,760
Interest-bearing	3,830,244	3,826,844
Total deposits	5,202,515	5,247,604
Federal funds purchased	125,000	28,000
Federal Home Loan Bank advances	587,162	710,001
Trust preferred borrowings	67,011	67,011
Senior debt	98,225	98,171
Other borrowed funds	54,799	34,623
Accrued interest payable	3,450	1,037
Other liabilities	103,490	88,748
Total liabilities	6,241,652	6,275,195
Stockholders’ Equity:
Common stock $0.01 par value, 65,000,000 shares authorized; issued 56,394,559 at March 31, 2018 and 56,279,527 at December 31, 2017	564	563
Capital in excess of par value	339,829	336,271
Accumulated other comprehensive loss	(20,820)	(8,152)
Retained earnings	704,081	669,557
Treasury stock at cost, 24,391,145 shares at March 31, 2018 and 24,861,145 shares at December 31, 2017	(277,375)	(273,894)
Total stockholders’ equity	746,279	724,345
Total liabilities and stockholders’ equity	$ 6,987,931	$ 6,999,540

CONSOLIDATED STATEMENTS OF FIN6

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Interest-bearing deposits in banks and other financial institutions, collateral	$ 4,500	$ 3,380
Available-for-sale securities, amortized cost basis	933,678	847,791
Held-to-maturity securities, fair value	159,164	162,853
Allowance for loan losses	$ 40,810	$ 40,599
Common stock, shares authorized (in shares)	65,000,000	65,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued (in shares)	56,394,559	56,279,527
Treasury stock, shares (in shares)	24,391,145	24,861,145

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock
Beginning Balance at Dec. 31, 2016	$ 687,336	$ 580	$ 329,457	$ (7,617)	$ 627,078	$ (262,162)
Beginning Balance (in shares) at Dec. 31, 2016		55,995,219
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	18,937				18,937
Other comprehensive income (loss)	830			830
Cash dividend	(2,199)				(2,199)
Issuance of common stock including proceeds from exercise of common stock options	1,094	$ 1	1,093
Issuance of common stock including proceeds from exercise of common stock options (in shares)		129,781
Stock-based compensation expense	821		821
Repurchase of common stock	$ (2,818)	$ 0				(2,818)
Repurchase of common stock (in shares)	62,000
Ending Balance at Mar. 31, 2017	$ 704,001	$ 581	331,371	(6,787)	643,816	(264,980)
Ending Balance (in shares) at Mar. 31, 2017		56,125,000
Beginning Balance at Dec. 31, 2017	724,345	$ 563	336,271	(8,152)	669,557	(273,894)
Beginning Balance (in shares) at Dec. 31, 2017		56,279,527
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	37,350				37,350
Other comprehensive income (loss)	(12,668)			(12,668)
Cash dividend	(2,826)				(2,826)
Issuance of common stock including proceeds from exercise of common stock options	2,613	$ 1	2,612
Issuance of common stock including proceeds from exercise of common stock options (in shares)		115,032
Stock-based compensation expense	946		946
Repurchase of common stock	$ (3,481)	$ 0				(3,481)
Repurchase of common stock (in shares)	70,000	0
Ending Balance at Mar. 31, 2018	$ 746,279	$ 564	$ 339,829	$ (20,820)	$ 704,081	$ (277,375)
Ending Balance (in shares) at Mar. 31, 2018		56,394,559

CONSOLIDATED STATEMENTS OF CHA8

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividend (in dollars per share)	$ 0.09	$ 0.06
Repurchase of common stock (in shares)	70,000	62,000

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net Income	$ 37,350	$ 18,937
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	3,650	2,162
Depreciation of premises and equipment, net	2,083	2,190
Amortization of fees and discounts, net	3,298	4,742
Amortization of intangible assets	633	857
Gain on mortgage banking activities, net	(1,737)	(1,185)
Gain on sale of securities, net	(21)	(320)
Loss on sale of other real estate owned and valuation adjustments, net	4	39
Deferred income tax expense	2,269	3,190
(Increase) decrease in accrued interest receivable	(564)	315
Decrease (increase) in other assets	530	(1,838)
Origination of loans held for sale	(76,962)	(85,833)
Proceeds from sales of loans held for sale	90,433	105,436
Stock-based compensation expense	946	821
Unrealized gain on equity securities	(15,346)	0
Increase in accrued interest payable	2,413	1,780
Increase (decrease) in other liabilities	13,799	(1,537)
Decrease (increase) in value of bank owned life insurance	783	(275)
Increase in capitalized interest, net	(1,087)	(1,316)
Net cash provided by operating activities	62,474	48,165
Investing activities:
Repayments, maturities and calls of investment securities held to maturity	1,035	250
Sale of investment securities available for sale	7,012	263,015
Purchases of investment securities available for sale	(113,451)	(375,687)
Repayments of investment securities available for sale	19,989	119,313
Proceeds from BOLI surrender	96,429	0
Net increase in loans	(34,046)	(106,933)
Purchases of stock of Federal Home Loan Bank of Pittsburgh	(49,391)	(54,990)
Redemptions of stock of Federal Home Loan Bank of Pittsburgh	51,821	73,236
Sales of other real estate owned	2,098	1,707
Investment in premises and equipment	(2,267)	(2,480)
Net cash used for investing activities	(20,771)	(82,569)
Financing activities:
Net (decrease) increase in demand and saving deposits	(62,086)	508,429
Increase (decrease) in time deposits	13,045	(22,998)
Increase in brokered deposits	24,094	137,797
Decrease in loan payable	0	(420)
Receipts from FHLB advances	41,376,732	42,415,835
Repayments of FHLB advances	(41,499,571)	(42,971,976)
Receipts from federal funds purchased and securities sold under agreement to repurchase	8,197,250	6,688,000
Repayments of federal funds purchased and securities sold under agreement to repurchase	(8,100,250)	(6,683,000)
Dividends paid	(2,826)	(2,199)
Issuance of common stock and exercise of common stock options	2,613	1,094
Purchase of treasury stock	(3,481)	(2,818)
Net cash (used for) provided by financing activities	(54,480)	67,744
(Decrease) increase in cash and cash equivalents	(12,777)	33,340
Cash and cash equivalents at beginning of period	723,866	821,923
Cash and cash equivalents at end of period	711,089	855,263
Supplemental Disclosure of Cash Flow Information:
Interest	7,486	5,943
Income taxes	2,267	(1,199)
Non-cash information:
Loans transferred to other real estate owned	2,166	1,737
Loans transferred to portfolio from held-for-sale at fair value	(1,750)	6,470
Net change in accumulated other comprehensive income	(12,668)	830
Goodwill adjustments, net	$ 0	$ (1,579)

BASIS OF PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION General Our unaudited Consolidated Financial Statements include the accounts of WSFS Financial Corporation (the Company or WSFS), Wilmington Savings Fund Society, FSB (WSFS Bank or the Bank), WSFS Wealth Management, LLC (Powdermill), WSFS Capital Management, LLC (West Capital), Cypress Capital Management, LLC (Cypress) and Christiana Trust Company of Delaware (Christiana Trust DE). We also have one unconsolidated subsidiary, WSFS Capital Trust III. WSFS Bank has three wholly-owned subsidiaries: WSFS Wealth Investments, 1832 Holdings, Inc. and Monarch Entity Services LLC. Overview Founded in 1832, the Bank is one of the ten oldest bank and trust companies continuously operating under the same name in the United States (U.S.). We provide residential and commercial real estate, commercial and consumer lending services, as well as retail deposit and cash management services. Lending activities are funded primarily with customer deposits and borrowings. In addition, we offer a variety of wealth management and trust services to personal and corporate customers. The Federal Deposit Insurance Corporation (FDIC) insures our customers’ deposits to their legal maximums. We serve our customers primarily from our 77 offices located in Delaware ( 46 ), Pennsylvania ( 29 ), Virginia ( 1 ) and Nevada ( 1 ) and through our website at www.wsfsbank.com . Information on our website is not incorporated by reference into this quarterly report. In preparing the unaudited Consolidated Financial Statements, we are required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. Amounts subject to significant estimates include the allowance for loan losses and reserves for lending related commitments, goodwill, intangible assets, post-retirement benefit obligations, the fair value of financial instruments, and other-than-temporary impairment (OTTI). Among other effects, changes to these estimates could result in future impairments of investment securities, goodwill and intangible assets and establishment of the allowance and lending related commitments as well as increased post-retirement benefits expense. Our accounting and reporting policies conform to Generally Accepted Accounting Principles (GAAP) in the U.S., prevailing practices within the banking industry for interim financial information and Rule 10-01 of SEC Regulation S-X (Rule 10-01). Rule 10-01 does not require us to include all information and notes that would be required in audited financial statements. Certain prior period amounts have been reclassified to conform with current period presentation. Operating results for the periods presented are not necessarily indicative of the results that may be expected for any future quarters or for the year ending December 31, 2018 . These unaudited, interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2017 (the 2017 Annual Report on Form 10-K) that was filed with the SEC on March 1, 2018 and is available at www.sec.gov or on our website at http://investors.wsfsbank.com/financials.cfm. All significant intercompany transactions were eliminated in consolidation. Significant Accounting Policies: The significant accounting policies used in preparation of our Consolidated Financial Statements are disclosed in our 2017 Annual Report on Form 10-K. Those significant accounting policies are unchanged at March 31, 2018 except as described below: Equity Securities We account for our investments in equity securities in accordance with ASC 321-10 " Investments - Equity Securities." Our equity securities are classified into two categories and accounted for as follows: • Equity securities with a readily determinable fair value are reported at fair value, with unrealized gains and losses included in earnings. Any dividends received are recorded in interest income. • Equity securities without a readily determinable fair value are reported at their cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Any dividends received are recorded in interest income. Equity investments include our investment in Visa Class B shares and certain other equity investments. The fair value of equity investments with readily determinable fair values is primarily obtained from third-party pricing services. For equity investments without readily determinable fair values, when an orderly transaction for the identical or similar investment of the same issuer is identified, we use the valuation techniques permitted under ASC 820 Fair Value to evaluate the observed transaction(s) and adjust the fair value of the equity investment. ASC 321-10 also provides guidance related to accounting for impairment of equity securities without readily determinable fair values. The qualitative assessment to determine whether impairment exists requires the use of our judgment in certain circumstances. If, after completing the qualitative assessment we conclude an equity investment without a readily determinable fair value is impaired, a loss for the difference between the equity investment’s carrying value and its fair value may be recognized as a reduction to noninterest income in the Consolidated Statements of Income. Senior Debt On September 1, 2017, we redeemed $55.0 million in aggregate principal amount of our 6.25% senior notes due 2019 which were issued in 2012 (the 2012 senior notes). The 2012 senior notes were repaid using a portion of the proceeds from our 2016 issuance of senior unsecured fixed-to-floating rate notes (the 2016 senior notes). We recorded noninterest expense of $0.7 million due to the write-off of unamortized debt issuance costs in connection with this redemption. RECENT ACCOUNTING PRONOUNCEMENTS Accounting Guidance Adopted in 2018 In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU supersedes the revenue recognition requirements in ASC 605, Revenue Recognition . ASU No. 2014-09 will require an entity to recognize revenue when it transfers promised goods or services to customers using a five-step model that requires entities to exercise judgment when considering the terms of the contracts. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date . This amendment defers the effective date of ASU 2014-09 by one year. In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations (Reporting Gross versus Net), which amends the principal versus agent guidance and clarifies that the analysis must focus on whether the entity has control of the goods or services before they are transferred to the customer. In addition, the FASB issued ASU Nos. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers and 2016-12, Narrow-Scope Improvements and Practical Expedients , both of which provide additional clarification of certain provisions in Topic 606. These ASC updates were effective for public business entities annual and interim reporting periods in fiscal years beginning after December 15, 2017. The standard permits the use of either the retrospective or retrospectively with the cumulative effect transition method. The Company adopted the standard on January 1, 2018. Consistent with the transition guidance in ASC 606, results for reporting periods beginning after January 1, 2018 are presented in accordance with ASC 606, while prior period amounts are reported in accordance with ASC 605. For revenue streams determined to be within the scope of the new standard, we concluded that the adoption of the standard did not have a material effect on our Consolidated Financial Statements at the time of adoption. See Note 2 for additional disclosures resulting from our adoption of this standard. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. This amendment requires that equity investments be measured at fair value with changes in fair value recognized in net income. When fair value is not readily determinable an entity may elect to measure the equity investment at cost, minus impairment, plus or minus any change in the investment’s observable price. For financial liabilities that are measured at fair value, the amendment requires an entity to present separately, in other comprehensive income, any change in fair value resulting from a change in instrument specific credit risk. This guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The standard requires retrospective application for equity investments with readily determinable fair values and prospective application for equity investments without readily determinable fair values. The Company adopted the standard on January 1, 2018 on a prospective basis for its equity investments without readily determinable fair values, and the adoption of the standard did not have an effect on our Consolidated Financial Statements at the time of adoption. Subsequent to the filing of our 2017 Annual Report on Form 10-K, we identified observable transactions related to an equity investment without a readily determinable fair value. These identified, observable transactions required the revaluation of this equity investment. The results of the revaluation was recorded in the Consolidated Statement of Income. See Note 11 for further information. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . ASU 2016-15 represents the Emerging Issues Task Force’s final consensus on eight issues related to the classification of cash payments and receipts in the statement of cash flows for a number of common transactions. The consensus also clarifies when identifiable cash flows should be separated versus classified based on their predominant source or use. This guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company adopted this standard on January 1, 2018 on a retrospective basis and the adoption did not have an effect on its Consolidated Financial Statements. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. ASU 2017-01 provides a new, two-step framework for determining whether a transaction is accounted for as an acquisition (or disposal) of assets or a business. The first step is evaluating whether substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets; if so, the transaction is not considered a business. Also, in order to be considered a business, the transaction would need to include an input and a substantive process that together significantly contribute to the ability to create outputs. The guidance is effective for public entities in annual and interim periods in fiscal years beginning after December 15, 2017. Early adoption is permitted for transactions that have not been reported in financial statements that have been issued or been made available for issuance. The Company adopted this standard on January 1, 2018 on a prospective basis with no impact to its Consolidated Financial Statements at the time of adoption. In February 2017, the FASB issued ASU No. 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets. ASU 2017-05 provides clarification of the scope of ASC 610-20. Specifically, the new guidance clarifies that ASC 610-20 applies to nonfinancial assets which do not meet the definition of a business or not-for-profit activity. Further, the new guidance clarifies that a financial asset is within the scope of ASC 610-20 if it meets the definition of an in-substance nonfinancial asset which is defined as a financial asset promised to a counterparty in a contract where substantially all of the assets promised are nonfinancial. Finally, the new guidance clarifies that each distinct nonfinancial asset and in-substance nonfinancial asset should be derecognized when the counterparty obtains control of it. The guidance is effective in annual and interim reporting periods in fiscal years beginning after December 15, 2017. Early application is permitted for all entities, but not before annual reporting periods beginning after December 15, 2016. The Company adopted this standard on January 1, 2018 on a modified retrospective basis and the adoption did not have an effect on its Consolidated Financial Statements at the time of adoption. In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The new guidance requires that the service cost component of net periodic pension cost be disclosed with other compensation costs in the income statement. For all other cost components, an entity must either separately disclose the other cost components in separate line item(s) outside a subtotal of income from operations in the income statement or disclose the line item(s) used to present the other cost components in the income statement. The guidance is effective in annual and interim periods in fiscal years beginning after December 15, 2017. Early adoption is permitted. The Company adopted this standard on January 1, 2018 on a retrospective basis with no impact to its Consolidated Financial Statements at the time of adoption. In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting . The new guidance clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. If the award’s fair value, vesting conditions and classification remain the same immediately before and after the change, modification accounting is not applied. Additionally, the guidance does not require valuation before or after the change if the change does not affect any of the inputs to the model used to value the award. The guidance is effective in annual and interim periods beginning after December 15, 2017. Early adoption is permitted. The new guidance will be applied on a prospective basis to awards modified on or after the adoption date. The Company adopted this standard on January 1, 2018 on a prospective basis with no impact to its Consolidated Financial Statements at the time of adoption. Accounting Guidance Pending Adoption at March 31, 2018 In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . This ASU revises the accounting related to lessee accounting. Under the new guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases. The new lease guidance also simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. ASU 2016-02 is effective for the first interim period within annual periods beginning after December 15, 2018, with early adoption permitted. Adoption using the modified retrospective transition approach is required for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company does not plan to early adopt this guidance. The Company is in the process of identifying our complete lease population as defined by this guidance and expects to complete this analysis in the second quarter. The Company continues to evaluate our internal systems, accounting policies, processes and related internal controls for potential impacts. To date, our preliminary review suggests that adoption will result in additional assets and liabilities on our Consolidated Statement of Financial Condition which may require modification of the Company's internal systems, accounting policies, processes and related internal controls to allow for the calculation of the lease liability and right-of-use asset as required by this guidance. The Company will adopt this guidance on January 1, 2019. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326). ASU 2016-13 replaces the incurred loss impairment methodology in current GAAP with an expected credit loss methodology and requires consideration of a broader range of information to determine credit loss estimates. Financial assets measured at amortized cost will be presented at the net amount expected to be collected by using an allowance for credit losses. Purchased credit impaired loans will receive an allowance account at the acquisition date that represents a component of the purchase price allocation. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses, with such allowance limited to the amount by which fair value is below amortized cost. This guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. The Company does not plan to early adopt this guidance. The Company's cross-functional team from Finance, Credit and IT are leading the implementation efforts to evaluate the impact of this guidance on its Consolidated Financial Statements, internal systems, accounting policies, processes and related internal controls. To date, our preliminary review of this guidance suggests that adoption may materially increase the allowance for loan losses and decrease capital levels; however, the extent of these impacts will depend on the asset quality of the portfolio and significant estimates and judgments made by management at the time of adoption. The team is currently completing due diligence on acceptable methodologies under the guidance and potential software solutions which could support the methodologies. The Company will adopt this guidance on January 1, 2020. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment . ASU 2017-04 simplifies the measurement of goodwill impairment by removing the hypothetical purchase price allocation. The new guidance requires an impairment of goodwill be measured as the amount by which a reporting unit’s carrying value exceeds its fair value, up to the amount of goodwill recorded. The guidance is effective in annual and interim periods in fiscal years beginning after December 15, 2019. Early adoption is permitted for goodwill impairment tests with measurement dates after January 1, 2017. The Company does not expect the application of this guidance to have a material impact on its Consolidated Financial Statements. In March 2017, the FASB issued ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities . The new guidance requires the amortization period for certain non-contingent callable debt securities held at a premium to end at the earliest call date of the debt security. If the call option is not exercised at the earliest call date, the guidance requires the debt security's effective yield to be reset based on the contractual payment terms of the debt security. The guidance is effective in annual and interim periods in fiscal years beginning after December 15, 2018. Early adoption is permitted. Use of the modified retrospective method, with a cumulative-effect adjustment to retained earnings, is required. In the period of adoption, a change in accounting principle disclosure is required. The Company does not expect the application of this guidance to have a material impact on its Consolidated Financial Statements. In August 2017, the FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities . The new guidance changes both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. Specifically, the guidance eliminates the requirement to separately measure and report hedge ineffectiveness and also aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. Additionally, the new guidance provides entities the ability to apply hedge accounting to additional hedging strategies. The guidance is effective in annual and interim periods beginning after December 15, 2018. Early adoption is permitted. The Company does not expect the application of this guidance to have a material impact on its Consolidated Financial Statements.

NONINTEREST INCOME

NONINTEREST INCOME	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
NONINTEREST INCOME	NONINTEREST INCOME We adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606) and all subsequent ASUs that modified Topic 606. The standard applies to certain revenue streams included in noninterest income on our unaudited Consolidated Statements of Income, discussed in more detail below. See Note 1 for further information about our adoption of ASU 2014-09, and Note 13 for further information about the disaggregation of noninterest income by segment. Credit/debit card and ATM income The following table presents the components of credit/debit card and ATM income: Three Months Ended March 31, 2018 2017 Bailment fees $ 6,093 $ 4,703 Interchange fees 3,460 3,198 Other card and ATM fees 252 230 Total credit/debit card and ATM income $ 9,805 $ 8,131 Credit/debit card and ATM income is primarily composed of bailment fees which are earned from bailment arrangements with our customers. Bailment arrangements are legal relationships in which property is delivered to another party's temporary custody and control without a transfer of ownership. The party receiving the property (the bailee) has possession and control of the property and is obligated to take reasonable care of the property. The party who transferred the property (the bailor) retains ownership interest of the property. In the event that the bailee files for bankruptcy protection, the property is not included in the bailee's assets. The bailee pays an agreed-upon fee for the use of the bailor's property in exchange for the bailor allowing use of the assets at the bailee's site. Bailment fees are earned from cash that is owned by WSFS but available for customers' use at an offsite location, such as cash located in an ATM at a customer's place of business. This revenue stream generates fee income through monthly billing for bailment services. Credit/debit card and ATM income also includes interchange fees. Interchange fees are paid by a merchant's bank to a bank that issued the debit or credit card used in a transaction to compensate the issuing bank for the value and benefit the merchant receives from accepting electronic payments. These revenue streams generate fee income at the time a transaction occurs and are recorded as revenue at the time of the transaction. Investment management and fiduciary income The following table presents the components of investment management and fiduciary income: Three Months Ended March 31, 2018 2017 Trust fees $ 5,248 $ 4,296 Wealth management and advisory fees 3,941 3,743 Total investment management and fiduciary income $ 9,189 $ 8,039 Investment management and fiduciary income is primarily composed of trust fees and wealth management fees. Trust fees are based on revenue earned from investment and trustee services to families and individuals across the U.S.; custody, escrow and trustee services on structured finance transactions; indenture trustee, administrative agent and collateral agent services to institutions and corporations; and commercial domicile and independent director services. Most fees are flat fees, except for a portion of personal and corporate trustee fees where we earn a percentage of assets under management. This revenue stream primarily generates fee income through monthly, quarterly and annual billing for services provided. Wealth management fees consists of fees from Cypress Capital, West Capital, Powdermill, Wealth Client Management and WSFS Investment Group (WIG). Wealth management fees are based on revenue earned from services including asset management, financial planning, family office, and brokerage. The fees are based on the market value of assets, are assessed as a flat fee, or are brokerage commissions. This revenue stream primarily generates fee income through quarterly and annual billing for the services. Deposit service charges The following table presents the components of deposit service charges: Three Months Ended March 31, 2018 2017 Service fees $ 2,580 $ 2,396 Return and overdraft fees 1,884 1,845 Other deposit service fees 166 156 Total deposit service charges $ 4,630 $ 4,397 Deposit service charges includes revenue earned from our core deposit products, certificates of deposit, and brokered deposits. We generate revenues from deposit service charges primarily through service charges and overdraft fees. Service charges consist primarily of monthly account maintenance fees, cash management fees, foreign ATM fees and other maintenance fees. All of these revenue streams generate fee income through service charges for monthly account maintenance and similar items, transfer fees, late fees, overlimit fees, and stop payment fees. Revenue is recorded at the time of the transaction. Other income The following table presents the components of other income: Three Months Ended March 31, 2018 2017 Managed service fees 2,826 2,619 Currency preparation 725 683 ATM insurance 590 697 Miscellaneous products and services 1,767 1,197 Total other income $ 5,908 $ 5,196 Other income primarily consists of managed services, currency preparation, ATM insurance and other miscellaneous products and services offered by the Bank. These fees are primarily generated through monthly billings or at the time of the transaction. Arrangements with multiple performance obligations Our contracts with customers may include multiple performance obligations. For such arrangements, we allocate revenue to each performance obligation based on its relative standalone selling price. We generally determine standalone selling prices based on the prices charged to customers. Practical expedients and exemptions We do not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

EARNINGS PER SHARE

EARNINGS PER SHARE	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE The following table shows the computation of basic and diluted earnings per share: Three Months Ended March 31, (Dollars and shares in thousands, except per share data) 2018 2017 Numerator: Net income $ 37,350 $ 18,937 Denominator: Weighted average basic shares 31,426 31,407 Dilutive potential common shares 834 942 Weighted average fully diluted shares 32,260 32,349 Earnings per share: Basic $ 1.19 $ 0.60 Diluted $ 1.16 $ 0.59 Outstanding common stock equivalents having no dilutive effect 88 22

INVESTMENT SECURITIES

INVESTMENT SECURITIES	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES	INVESTMENT SECURITIES The following tables detail the amortized cost and the estimated fair value of our investments in available-for-sale and held-to-maturity debt securities as well as our equity investments. None of our investments in debt securities are classified as trading. March 31, 2018 (Dollars in thousands) Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value Available-for-Sale Debt Securities (1) CMO $ 277,079 $ 5 $ 7,848 $ 269,236 FNMA MBS 523,676 71 14,747 509,000 FHLMC MBS 99,860 3 2,564 97,299 GNMA MBS 33,063 149 929 32,283 $ 933,678 $ 228 $ 26,088 $ 907,818 Held-to-Maturity Debt Securities State and political subdivisions $ 159,672 $ 310 $ 818 $ 159,164 Equity Investments (2) Visa Class B shares $ 14,100 $ 15,346 $ — $ 29,446 Other equity investments 3,947 — 30 3,917 $ 18,047 $ 15,346 $ 30 $ 33,363 (1) Held-to–maturity securities transferred from available-for-sale are included in held-to-maturity at fair value at the time of transfer. The amortized cost of held-to-maturity securities included net unrealized gains of $1.5 million at March 31, 2018 related to securities transferred, which are offset in Accumulated other comprehensive loss, net of tax. (2) Equity investments are included in Other investments in the unaudited Consolidated Statements of Financial Condition. December 31, 2017 (Dollars in thousands) Amortized Cost Gross Gross Fair Available-for-Sale Debt Securities (1) CMO $ 250,592 $ 88 $ 4,141 $ 246,539 FNMA MBS 479,218 941 6,172 473,987 FHLMC MBS 88,681 118 924 87,875 GNMA MBS 29,300 209 411 29,098 $ 847,791 $ 1,356 $ 11,648 $ 837,499 Held-to-Maturity Debt Securities State and political subdivisions $ 161,186 $ 1,758 $ 91 $ 162,853 Equity Investments (2) Visa Class B shares $ 14,048 $ — $ — $ 14,048 Other equity investments 3,943 — 20 3,923 $ 17,991 $ — $ 20 $ 17,971 (1) Held-to–maturity securities transferred from available-for-sale are included in held-to-maturity at fair value at the time of transfer. The amortized cost of held-to-maturity securities included net unrealized gains of $1.6 million at December 31, 2017 related to securities transferred, which are offset in Accumulated other comprehensive loss, net of tax. (2) Equity investments are included in Other investments in the unaudited Consolidated Statements of Financial Condition. The scheduled maturities of our available-for-sale debt securities at March 31, 2018 and December 31, 2017 are presented in the table below: Available for Sale Amortized Fair (Dollars in thousands) Cost Value March 31, 2018 Within one year $ — $ — After one year but within five years 19,963 19,389 After five years but within ten years 180,927 173,171 After ten years 732,788 715,258 $ 933,678 $ 907,818 December 31, 2017 Within one year $ — $ — After one year but within five years 20,051 19,825 After five years but within ten years 179,812 175,583 After ten years 647,928 642,091 $ 847,791 $ 837,499 The scheduled maturities of our held-to-maturity debt securities at March 31, 2018 and December 31, 2017 are presented in the table below: Held to Maturity Amortized Fair (Dollars in thousands) Cost Value March 31, 2018 Within one year $ 160 $ 160 After one year but within five years 6,867 6,850 After five years but within ten years 20,042 19,930 After ten years 132,603 132,224 $ 159,672 $ 159,164 December 31, 2017 Within one year $ 322 $ 320 After one year but within five years 5,895 5,894 After five years but within ten years 18,751 18,873 After ten years 136,218 137,766 $ 161,186 $ 162,853 Mortgage-backed securities (MBS) may have expected maturities that differ from their contractual maturities. These differences arise because issuers may have the right to call securities and borrowers may have the right to prepay obligations with or without prepayment penalty. Investment securities with fair market values aggregating $619.0 million and $688.2 million were pledged as collateral for retail customer repurchase agreements, municipal deposits, and other obligations as of March 31, 2018 and December 31, 2017 , respectively. During the three months ended March 31, 2018 , we sold $7.0 million of debt securities categorized as available for sale, resulting in realized gains of less than $0.1 million and no realized losses. During the three months ended March 31, 2017 , we sold $263.0 million of debt securities categorized as available for sale, resulting in realized gains of $0.3 million and one security with an immaterial realized loss. The cost basis of all debt securities sales is based on the specific identification method. As of March 31, 2018 and December 31, 2017 , our debt securities portfolio had remaining unamortized premiums of $13.9 million and $14.1 million , respectively, and unaccreted discounts of $1.3 million as of both March 31, 2018 and December 31, 2017. For debt securities with unrealized losses, the table below shows our gross unrealized losses and fair value by investment category and length of time that individual debt securities were in a continuous unrealized loss position at March 31, 2018 . Duration of Unrealized Loss Position Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Loss Value Loss Value Loss Available-for-sale debt securities: CMO $ 186,243 $ 4,292 $ 77,903 $ 3,556 $ 264,146 $ 7,848 FNMA MBS 339,535 7,581 122,243 7,166 461,778 14,747 FHLMC MBS 76,822 1,463 20,401 1,101 97,223 2,564 GNMA MBS 10,537 265 14,127 664 24,664 929 Total temporarily impaired investments $ 613,137 $ 13,601 $ 234,674 $ 12,487 $ 847,811 $ 26,088 Held-to-maturity debt securities: State and political subdivisions $ 92,114 $ 708 $ 5,372 $ 110 $ 97,486 $ 818 Total temporarily impaired investments $ 92,114 $ 708 $ 5,372 $ 110 $ 97,486 $ 818 Other investments $ — $ — $ 617 $ 30 $ 617 $ 30 For investment securities with unrealized losses, the table below shows our gross unrealized losses and fair value by investment category and length of time that individual securities were in a continuous unrealized loss position at December 31, 2017 . Duration of Unrealized Loss Position Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Loss Value Loss Value Loss Available-for-sale debt securities: CMO $ 146,726 $ 1,820 $ 77,149 $ 2,321 $ 223,875 $ 4,141 FNMA MBS 204,921 1,479 126,342 4,693 331,263 6,172 FHLMC MBS 42,514 269 21,405 655 63,919 924 GNMA MBS 4,615 56 14,782 355 19,397 411 Total temporarily impaired investments $ 398,776 $ 3,624 $ 239,678 $ 8,024 $ 638,454 $ 11,648 Held-to-maturity debt securities: State and political subdivisions $ 23,404 $ 59 $ 5,625 $ 32 $ 29,029 $ 91 Total temporarily impaired investments $ 23,404 $ 59 $ 5,625 $ 32 $ 29,029 $ 91 Other investments $ — $ — $ 624 $ 20 $ 624 $ 20 At March 31, 2018 , we owned debt securities totaling $945.3 million for which the amortized cost basis exceeded fair value. Total unrealized losses on these securities were $26.9 million at March 31, 2018 . The temporary impairment is the result of changes in market interest rates subsequent to purchase. Our investment portfolio is reviewed each quarter for indications of OTTI. This review includes analyzing the length of time and the extent to which the fair value has been lower than the amortized cost, the financial condition and near-term prospects of the issuer, including any specific events which may influence the operations of the issuer and our intent and ability to hold the investment for a period of time sufficient to allow for full recovery of the unrealized loss. We evaluate our intent and ability to hold debt securities based upon our investment strategy for the particular type of security and our cash flow needs, liquidity position, capital adequacy and interest rate risk position. We do not have the intent to sell, nor is it more likely-than-not we will be required to sell these securities before we are able to recover the amortized cost basis. All debt securities, with the exception of one having a fair value of $0.8 million at March 31, 2018 , were AA-rated or better at the time of purchase and remained investment grade at March 31, 2018 . All securities were evaluated for OTTI at March 31, 2018 and December 31, 2017 . The result of this evaluation showed no OTTI as of March 31, 2018 or December 31, 2017 . The estimated weighted average duration of MBS was 5.42 years at March 31, 2018 .

LOANS

LOANS	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
LOANS	LOANS The following table shows our loan portfolio by category: (Dollars in thousands) March 31, 2018 December 31, 2017 Commercial and industrial $ 1,489,563 $ 1,464,554 Owner-occupied commercial 1,080,662 1,079,247 Commercial mortgages 1,164,424 1,187,705 Construction 289,943 281,608 Residential (1) 247,083 253,301 Consumer 582,722 558,493 4,854,397 4,824,908 Less: Deferred fees, net 7,829 7,991 Allowance for loan losses 40,810 40,599 Net loans $ 4,805,758 $ 4,776,318 (1) Includes reverse mortgages, at fair value of $20.0 million at March 31, 2018 and $19.8 million at December 31, 2017 . The following table shows the outstanding principal balance and carrying amounts for acquired credit impaired loans for which the Company applies ASC 310-30 as of the dates indicated: (Dollars in thousands) March 31, 2018 December 31, 2017 Outstanding principal balance $ 24,838 $ 27,034 Carrying amount 19,828 21,295 Allowance for loan losses 326 358 The following table presents the changes in accretable yield on the acquired credit impaired loans for the three months ended March 31, 2018 : (Dollars in thousands) Three months ended March 31, 2018 Balance at beginning of period $ 3,035 Accretion (417 ) Reclassification from nonaccretable difference 2 Additions/adjustments (180 ) Disposals — Balance at end of period $ 2,440

ALLOWANCE FOR LOAN LOSSES AND C

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION	ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION Allowance for Loan Losses We maintain an allowance for loan losses which represents our best estimate of probable losses in our loan portfolio. As losses are realized, they are charged to this allowance. We established our allowance in accordance with guidance provided in the SEC’s Staff Accounting Bulletin 102 (SAB 102), Selected Loan Loss Allowance Methodology and Documentation Issues, ASC 450, Contingencies and ASC 310, Receivables . When we have reason to believe it is probable that we will not be able to collect all contractually due amounts of principal and interest, loans are evaluated for impairment on an individual basis and a specific allocation of the allowance is assigned in accordance with ASC 310-10. We also maintain an allowance for loan losses on acquired loans when: (i) for loans accounted for under ASC 310-30, there is deterioration in credit quality subsequent to acquisition and (ii) for loans accounted for under ASC 310-20, the inherent losses in the loans exceed the remaining credit discount recorded at the time of acquisition. The determination of the allowance for loan losses requires significant judgment reflecting our best estimate of impairment related to specifically identified impaired loans as well as probable loan losses in the remaining loan portfolio. Our evaluation is based on a continuing review of these portfolios. The following are included in our allowance for loan losses: • Specific reserves for impaired loans • An allowance for each pool of homogenous loans based on historical loss experience • Adjustments for qualitative and environmental factors allocated to pools of homogenous loans When it is probable that the Bank will be unable to collect all amounts due (interest and principal) in accordance with the contractual terms of the loan agreement, it assigns a specific reserve to that loan, if necessary. Unless loans are well-secured and collection is imminent, loans greater than 90 days past due are deemed impaired and their respective reserves are generally charged-off once the loss has been confirmed. Estimated specific reserves are based on collateral values, estimates of future cash flows or market valuations. We charge loans off when they are deemed to be uncollectible. During the three months ended March 31, 2018 and 2017 , net charge-offs totaled $3.4 million , or 0.29% , of average loans annualized, and $2.1 million , or 0.19% , of average loans annualized, respectively. Allowances for pooled homogeneous loans, that are not deemed impaired, are based on historical net loss experience. Estimated losses for pooled portfolios are determined differently for commercial loan pools and retail loan pools. Commercial loans are pooled as follows: commercial, owner-occupied commercial, commercial mortgages and construction. Each pool is further segmented by internally assessed risk ratings. Loan losses for commercial loans are estimated by determining the probability of default and expected loss severity upon default. The probability of default is calculated based on the historical rate of migration to impaired status during the last 29 quarters. During the three months ended March 31, 2018 , we increased the look-back period to 29 quarters from the 28 quarters used at December 31, 2017 . This increase in the look-back period allows us to continue to anchor to the fourth quarter of 2010 to ensure that the core reserves calculated by the ALLL model are adequately considering the losses within a full credit cycle. Loss severity upon default is calculated as the actual loan losses (net of recoveries) on impaired loans in their respective pool during the same time frame. Retail loans are pooled into the following segments: residential mortgage, consumer secured and consumer unsecured loans. Pooled reserves for retail loans are calculated based solely on average net loss rates over the same 29 quarter look-back period. Qualitative adjustment factors consider various current internal and external conditions which are allocated among loan types and take into consideration: • Current underwriting policies, staff, and portfolio mix, • Internal trends of delinquency, nonaccrual and criticized loans by segment, • Risk rating accuracy, control and regulatory assessments/environment, • General economic conditions - locally and nationally, • Market trends impacting collateral values, and • The competitive environment, as it could impact loan structure and underwriting. The above factors are based on their relative standing compared to the period in which historic losses are used in core reserve estimates and current directional trends. Qualitative factors in our model can add to or subtract from core reserves. The allowance methodology uses a loss emergence period (LEP), which is the period of time between an event that triggers the probability of a loss and the confirmation of the loss. We estimate the commercial LEP to be approximately nine quarters as of March 31, 2018 . Our residential mortgage and consumer LEP remained at four quarters as of March 31, 2018 . We evaluate LEP quarterly for reasonableness and complete a detailed historical analysis of our LEP annually for our commercial portfolio and review the current four quarter LEP for the retail portfolio to determine the continued reasonableness of this assumption. Our loan officers and risk managers meet at least quarterly to discuss and review the conditions and risks associated with individual problem loans. In addition, various regulatory agencies periodically review our loan ratings and allowance for loan losses and the Bank’s internal loan review department performs loan reviews. The following tables provide the activity of our allowance for loan losses and loan balances for the three months ended March 31, 2018 : (Dollars in thousands) Commercial Owner-occupied Commercial Commercial Mortgages Construction Residential (1) Consumer Total Allowance for loan losses Beginning balance $ 16,732 $ 5,422 $ 5,891 $ 2,861 $ 1,798 $ 7,895 $ 40,599 Charge-offs (3,360 ) (10 ) (48 ) — — (462 ) (3,880 ) Recoveries 80 5 134 1 14 207 441 Provision (credit) 2,650 (58 ) 617 27 (129 ) 548 3,655 Provision for acquired loans — — 23 (25 ) (3 ) — (5 ) Ending balance $ 16,102 $ 5,359 $ 6,617 $ 2,864 $ 1,680 $ 8,188 $ 40,810 Loans individually evaluated for impairment $ 2,632 $ — $ — $ — $ 643 $ 186 $ 3,461 Loans collectively evaluated for impairment 13,296 5,347 6,528 2,857 1,001 7,994 37,023 Acquired loans evaluated for impairment 174 12 89 7 35 9 326 Ending balance $ 16,102 $ 5,359 $ 6,617 $ 2,864 $ 1,679 $ 8,189 $ 40,810 Loans individually evaluated for impairment (2) $ 16,993 $ 4,342 $ 5,946 $ 6,490 $ 12,861 $ 7,677 $ 54,309 Loans collectively evaluated for impairment 1,361,517 938,166 970,750 267,293 145,753 541,644 4,225,123 Acquired nonimpaired loans 107,183 133,007 178,518 15,259 67,722 33,152 534,841 Acquired impaired loans 3,870 5,147 9,210 901 777 249 20,154 Ending balance (3) $ 1,489,563 $ 1,080,662 $ 1,164,424 $ 289,943 $ 227,113 $ 582,722 $ 4,834,427 (1) Period-end loan balance excludes reverse mortgages, at fair value of $20.0 million . (2) The difference between this amount and nonaccruing loans represents accruing troubled debt restructured loans of $20.2 million for the period ending March 31, 2018 . Accruing troubled debt restructured loans are considered impaired loans. (3) Ending loan balances do not include net deferred fees. The following table provides the activity of the allowance for loan losses and loan balances for the three months ended March 31, 2017 : (Dollars in thousands) Commercial Owner - occupied Commercial Commercial Mortgages Construction Residential (1) Consumer Total Allowance for loan losses Beginning balance $ 13,339 $ 6,588 $ 8,915 $ 2,838 $ 2,059 $ 6,012 $ 39,751 Charge-offs (1,255 ) (192 ) (104 ) (14 ) (11 ) (1,143 ) (2,719 ) Recoveries 84 75 46 2 120 305 632 Provision (credit) 1,949 (441 ) (518 ) 158 (114 ) 1,080 2,114 Provision for acquired loans 88 — (4 ) (23 ) — (13 ) 48 Ending balance $ 14,205 $ 6,030 $ 8,335 $ 2,961 $ 2,054 $ 6,241 $ 39,826 Loans individually evaluated for impairment $ 1,860 $ — $ 1,395 $ 500 $ 887 $ 194 $ 4,836 Loans collectively evaluated for impairment 12,165 6,015 6,763 2,397 1,144 6,042 34,526 Acquired loans evaluated for impairment 180 15 177 64 23 5 464 Ending balance $ 14,205 $ 6,030 $ 8,335 $ 2,961 $ 2,054 $ 6,241 $ 39,826 Loans individually evaluated for impairment (2) $ 16,767 $ 4,020 $ 9,771 $ 3,130 $ 14,280 $ 9,029 $ 56,997 Loans collectively evaluated for impairment 1,175,911 919,508 928,925 225,718 158,430 405,285 3,813,777 Acquired nonimpaired loans 141,933 156,724 216,410 24,540 85,679 50,321 675,607 Acquired impaired loans 5,256 12,040 10,450 2,372 866 263 31,247 Ending balance (3) $ 1,339,867 $ 1,092,292 $ 1,165,556 $ 255,760 $ 259,255 $ 464,898 $ 4,577,628 (1) Period-end loan balance excludes reverse mortgages, at fair value of $22.5 million . (2) The difference between this amount and nonaccruing loans represents accruing troubled debt restructured loans of $17.3 million for the period ending March 31, 2017 . Accruing troubled debt restructured loans are considered impaired loans. (3) Ending loan balances do not include net deferred fees. Nonaccrual and Past Due Loans Nonaccruing loans are those on which the accrual of interest has ceased. Typically, we discontinue accrual of interest on originated loans after payments become more than 90 days past due or earlier if we do not expect the full collection of principal or interest in accordance with the terms of the loan agreement. Interest accrued but not collected at the date a loan is placed on nonaccrual status is reversed and charged against interest income. In addition, the accretion of net deferred loan fees and amortization of net deferred loan costs is suspended when a loan is placed on nonaccrual status. Subsequent cash receipts are applied either to the outstanding principal balance or recorded as interest income, depending on our assessment of the ultimate collectability of principal and interest. Loans greater than 90 days past due and still accruing are defined as loans contractually past due 90 days or more as to principal or interest payments, but which remain in accrual status because they are considered well secured and are in the process of collection. The following tables show our nonaccrual and past due loans at the dates indicated: March 31, 2018 (Dollars in thousands) 30–59 Days Past Due and Still Accruing 60–89 Days Past Due and Still Accruing Greater Than 90 Days Past Due and Still Accruing Total Past Due And Still Accruing Accruing Current Balances Acquired Impaired Loans Nonaccrual Loans Total Loans Commercial $ 403 $ 708 $ 31 $ 1,142 $ 1,467,695 $ 3,870 $ 16,856 $ 1,489,563 Owner-occupied commercial 1,529 — — 1,529 1,069,644 5,147 4,342 1,080,662 Commercial mortgages 616 34 46 696 1,149,408 9,210 5,110 1,164,424 Construction 2,024 — — 2,024 285,580 901 1,438 289,943 Residential (1) 2,446 211 155 2,812 219,366 777 4,158 227,113 Consumer 532 179 323 1,034 579,283 249 2,156 582,722 Total (2) $ 7,550 $ 1,132 $ 555 $ 9,237 $ 4,770,976 $ 20,154 $ 34,060 $ 4,834,427 % of Total Loans 0.16 % 0.02 % 0.01 % 0.19 % 98.69 % 0.42 % 0.70 % 100 % (1) Residential accruing current balances excludes reverse mortgages at fair value of $20.0 million . (2) The balances above include a total of $534.8 million of acquired non-impaired loans. December 31, 2017 (Dollars in thousands) 30–59 Days Past Due and Still Accruing 60–89 Days Past Due and Still Accruing Greater Than 90 Days Past Due and Still Accruing Total Past Due And Still Accruing Accruing Current Balances Acquired Impaired Loans Nonaccrual Loans Total Loans Commercial $ 1,050 $ — $ — $ 1,050 $ 1,440,291 $ 4,156 $ 19,057 $ 1,464,554 Owner-occupied commercial 2,069 233 — 2,302 1,067,488 5,803 3,654 1,079,247 Commercial mortgages 320 90 — 410 1,171,701 9,724 5,870 1,187,705 Construction — — — — 278,864 940 1,804 281,608 Residential (1) 2,058 731 356 3,145 225,434 784 4,124 233,487 Consumer 1,117 463 105 1,685 554,634 247 1,927 558,493 Total (2) $ 6,614 $ 1,517 $ 461 $ 8,592 $ 4,738,412 $ 21,654 $ 36,436 $ 4,805,094 % of Total Loans 0.14 % 0.03 % 0.01 % 0.18 % 98.61 % 0.45 % 0.76 % 100 % (1) Residential accruing current balances excludes reverse mortgages, at fair value of $19.8 million . (2) The balances above include a total of $565.5 million of acquired non-impaired loans. Impaired Loans Loans for which it is probable we will not collect all principal and interest due according to their contractual terms, which is assessed based on the credit characteristics of the loan and/or payment status, are measured for impairment in accordance with the provisions of SAB 102 and FASB ASC 310, Receivables (ASC 310). The amount of impairment is required to be measured using one of three methods: (1) the present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the fair value of collateral, if the loan is collateral dependent or (3) the loan’s observable market price. If the measure of the impaired loan is less than the recorded investment in the loan, a related allowance is allocated for the impairment. The following tables provide an analysis of our impaired loans at March 31, 2018 and December 31, 2017 : March 31, 2018 (Dollars in thousands) Ending Loan Balances Loans with No Related Reserve (1) Loans with Related Reserve Related Reserve Contractual Principal Balances Average Loan Balances Commercial $ 18,592 $ 3,038 $ 15,554 $ 2,806 $ 24,842 $ 17,941 Owner-occupied commercial 6,032 4,342 1,690 12 6,360 6,103 Commercial mortgages 7,427 5,946 1,481 89 16,370 11,103 Construction 6,718 6,490 228 7 7,239 5,134 Residential 13,261 8,195 5,066 679 15,992 14,334 Consumer 7,911 6,480 1,431 194 8,953 8,136 Total (2) $ 59,941 $ 34,491 $ 25,450 $ 3,787 $ 79,756 $ 62,751 (1) Reflects loan balances at or written down to their remaining book balance. (2) The above includes acquired impaired loans totaling $5.6 million in the ending loan balance and $6.6 million in the contractual principal balance. December 31, 2017 (Dollars in thousands) Ending Loan Balances Loans with No Related (1) Loans with Related Reserve Related Reserve Contractual Principal Balances Average Loan Balances Commercial $ 20,842 $ 3,422 $ 17,420 $ 3,861 $ 23,815 $ 15,072 Owner-occupied commercial 5,374 3,654 1,720 12 5,717 5,827 Commercial mortgages 7,598 4,487 3,111 112 16,658 12,630 Construction 6,292 6,023 269 33 6,800 4,523 Residential 14,181 8,282 5,899 796 17,015 14,533 Consumer 7,819 6,304 1,515 203 8,977 8,158 Total (2) $ 62,106 $ 32,172 $ 29,934 $ 5,017 $ 78,982 $ 60,743 (1) Reflects loan balances at or written down to their remaining book balance. (2) The above includes acquired impaired loans totaling $5.8 million in the ending loan balance and $6.8 million in the contractual principal balance. Interest income of $0.3 million was recognized on impaired loans during the three months ended March 31, 2018 . Interest income of $0.3 million was recognized on impaired loans during the three months ended March 31, 2017 . As of March 31, 2018 , there were 38 residential loans and 10 commercial loans in the process of foreclosure. The total outstanding balance on the loans was $3.3 million and $6.1 million , respectively. As of December 31, 2017 , there were 33 residential loans and 8 commercial loans in the process of foreclosure. The total outstanding balance on the loans was $2.9 million and $6.0 million , respectively. Reserves on Acquired Nonimpaired Loans In accordance with FASB ASC 310, loans acquired by the Bank through its mergers with First National Bank of Wyoming, Alliance Bancorp, Inc. (Alliance) and Penn Liberty are required to be reflected on the balance sheet at their fair values on the date of acquisition as opposed to their contractual values. Therefore, on the date of acquisition establishing an allowance for acquired loans is prohibited. After the acquisition date the Bank performs a separate allowance analysis on a quarterly basis to determine if an allowance for loan loss is necessary. Should the credit risk calculated exceed the purchased loan portfolio’s remaining credit mark, additional reserves will be added to the Bank’s allowance. When a purchased loan becomes impaired after its acquisition, it is evaluated as part of the Bank’s reserve analysis and a specific reserve is established to be included in the Bank’s allowance. Credit Quality Indicators Below is a description of each of our risk ratings for all commercial loans: • Pass . These borrowers currently show no indication of deterioration or potential problems and their loans are considered fully collectible • Special Mention. Borrowers have potential weaknesses that deserve management’s close attention. Borrowers in this category may be experiencing adverse operating trends, for example, declining revenues or margins, high leverage, tight liquidity, or increasing inventory without increasing sales. These adverse trends can have a potential negative effect on the borrower’s repayment capacity. These assets are not adversely classified and do not expose the Bank to significant risk that would warrant a more severe rating. Borrowers in this category may also be experiencing significant management problems, pending litigation, or other structural credit weaknesses. • Substandard . Borrowers have well-defined weaknesses that require extensive oversight by management. Borrowers in this category may exhibit one or more of the following: inadequate debt service coverage, unprofitable operations, insufficient liquidity, high leverage, and weak or inadequate capitalization. Relationships in this category are not adequately protected by the sound financial worth and paying capacity of the obligor or the collateral pledged on the loan, if any. A distinct possibility exists that the Bank will sustain some loss if the deficiencies are not corrected. • Doubtful . Borrowers have well-defined weaknesses inherent in the Substandard category with the added characteristic that the possibility of loss is extremely high. Current circumstances in the credit relationship make collection or liquidation in full highly questionable. A doubtful asset has some pending event that may strengthen the asset that defers the loss classification. Such impending events include: perfecting liens on additional collateral, obtaining collateral valuations, an acquisition or liquidation preceding, proposed merger, or refinancing plan. • Loss . Borrowers are uncollectible or of such negligible value that continuance as a bankable asset is not supportable. This classification does not mean that the asset has absolutely no recovery or salvage value, but rather that it is not practical to defer writing off this asset even though partial recovery may be recognized sometime in the future. Residential and Consumer Loans The residential and consumer loan portfolios are monitored on an ongoing basis using delinquency information and loan type as credit quality indicators. These credit quality indicators are assessed in the aggregate in these relatively homogeneous portfolios. Loans that are greater than 90 days past due are generally considered nonperforming and placed on nonaccrual status. The following tables provide an analysis of loans by portfolio segment based on the credit quality indicators used to determine the Allowance for Loan Loss. Commercial Credit Exposure March 31, 2018 (Dollars in thousands) Commercial Owner-occupied Commercial Commercial Mortgages Construction Total Commercial (1) Amount % Risk Rating: Special mention $ 24,871 $ 15,874 $ 4,346 $ — $ 45,091 Substandard: Accrual 33,960 18,055 2,399 5,796 60,210 Nonaccrual 14,224 4,342 5,110 1,438 25,114 Doubtful 2,632 — — — 2,632 Total Special Mention and Substandard 75,687 38,271 11,855 7,234 133,047 3 % Acquired impaired 3,870 5,147 9,210 901 19,128 1 % Pass 1,410,006 1,037,244 1,143,359 281,808 3,872,417 96 % Total $ 1,489,563 $ 1,080,662 $ 1,164,424 $ 289,943 $ 4,024,592 100 % (1) Table includes $434.0 million of acquired non-impaired loans as of March 31, 2018 . December 31, 2017 (Dollars in thousands) Commercial Owner-occupied Commercial Commercial Mortgages Construction Total Commercial (1) Amount % Risk Rating: Special mention $ 22,789 $ 16,783 $ — $ — $ 39,572 Substandard: Accrual 34,332 19,386 1,967 4,965 60,650 Nonaccrual 15,370 3,654 5,852 1,804 26,680 Doubtful 3,687 — 18 — 3,705 Total Special Mention and Substandard 76,178 39,823 7,837 6,769 130,607 3 % Acquired impaired 4,156 5,803 9,724 940 20,623 1 % Pass 1,384,220 1,033,621 1,170,144 273,899 3,861,884 96 % Total $ 1,464,554 $ 1,079,247 $ 1,187,705 $ 281,608 $ 4,013,114 100 % (1) Table includes $457.3 million of acquired non-impaired loans as of December 31, 2017 . Residential and Consumer Credit Exposure (Dollars in thousands) Residential (2) Consumer Total Residential and Consumer (3) March 31, December 31, March 31, December 31, March 31, 2018 December 31, 2017 2018 2017 2018 2017 Amount Percent Amount Percent Nonperforming (1) $ 12,861 $ 13,778 $ 7,677 $ 7,588 $ 20,538 3 % $ 21,366 3 % Acquired impaired loans 777 784 249 247 1,026 — % 1,031 — % Performing 213,475 218,925 574,796 550,658 788,271 97 % 769,583 97 % Total $ 227,113 $ 233,487 $ 582,722 $ 558,493 $ 809,835 100 % $ 791,980 100 % (1) Includes $14.2 million as of March 31, 2018 and $15.3 million as of December 31, 2017 of troubled debt restructured mortgages and home equity installment loans that are performing in accordance with the loans’ modified terms and are accruing interest. (2) Residential performing loans excludes $20.0 million and $19.8 million of reverse mortgages at fair value as of March 31, 2018 and December 31, 2017 , respectively. (3) Total includes $100.9 million and $108.2 million in acquired non-impaired loans as of March 31, 2018 and December 31, 2017 , respectively. Troubled Debt Restructurings (TDRs) TDRs are recorded in accordance with FASB ASC 310-40, Troubled Debt Restructuring by Creditors (ASC 310-40) . The following table presents the balance of TDRs as of the indicated dates: (Dollars in thousands) March 31, 2018 December 31, 2017 Performing TDRs $ 20,248 $ 20,061 Nonperforming TDRs 9,907 9,627 Total TDRs $ 30,155 $ 29,688 Approximately $0.8 million and $1.0 million in related reserves have been established for these loans at March 31, 2018 and December 31, 2017 , respectively. The following table presents information regarding the types of loan modifications made for the three months ended March 31, 2018 and 2017: March 31, 2018 March 31, 2017 Contractual payment reduction and term extension Maturity Date Extension Discharged in bankruptcy Other (1) Total Contractual payment reduction and term extension Maturity Date Extension Discharged in bankruptcy Other (1) Total Commercial — — — — — — 1 — — 1 Owner-occupied commercial — — — — — — 1 — — 1 Commercial Mortgages — 1 — — 1 — — — — — Construction — 1 — — 1 — 2 — — 2 Residential — — — — — — — 1 — 1 Consumer 1 1 — 2 4 — — 6 1 7 Total 1 3 — 2 6 — 4 7 1 12 (1) Other includes underwriting exceptions. Principal balances are generally not forgiven when a loan is modified as a TDR. Nonaccruing restructured loans remain in nonaccrual status until there has been a period of sustained repayment performance, which is typically six months , and payment is reasonably assured. The following table presents loans identified as TDRs during the three months ended March 31, 2018 and 2017 . Three Months Ended March 31, 2018 2017 (Dollars in thousands) Pre Modification Post Modification Pre Modification Post Modification Commercial $ — $ — $ 443 $ 443 Owner-occupied commercial — — 3,071 3,071 Commercial mortgages 458 458 — — Construction 920 920 1,712 1,712 Residential — — 242 242 Consumer 262 262 584 584 Total $ 1,640 $ 1,640 $ 6,052 $ 6,052 During the three months ended March 31, 2018 , the TDRs set forth in the table above resulted in no increase in our allowance for loan losses and no additional charge-offs. For the same period of 2017 , the TDRs set forth in the table above increased our allowance for loan losses by $0.3 million and resulted in no additional charge-offs. During the three months ended March 31, 2018 , two TDRs defaulted that had received troubled debt modification during the past twelve months with a total loan amount of $0.1 million . During the three months ended March 31, 2017 , three TDRs defaulted that had received troubled debt modification during the past twelve months with a total loan amount of $0.7 million .

DEPOSITS

DEPOSITS	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
DEPOSITS	DEPOSITS The following table shows our deposits by category: (Dollars in thousands) March 31, 2018 December 31, 2017 Noninterest-bearing: Noninterest demand (1) $ 1,372,271 $ 1,420,760 Total noninterest-bearing $ 1,372,271 $ 1,420,760 Interest-bearing: Interest-bearing demand $ 991,020 $ 1,071,512 Savings 561,432 549,744 Money market 1,382,178 1,347,146 Total core deposits (1) 2,934,630 2,968,402 Customer time deposits (1) 642,116 629,071 Brokered deposits 253,498 229,371 Total interest-bearing 3,830,244 3,826,844 Total deposits $ 5,202,515 $ 5,247,604 (1) Noninterest demand, total core deposits and customer time deposits represent the Company's total customer deposits.

ASSOCIATE BENEFIT PLANS

ASSOCIATE BENEFIT PLANS	3 Months Ended
	Mar. 31, 2018
Postemployment Benefits [Abstract]
ASSOCIATE BENEFIT PLANS	ASSOCIATE BENEFIT PLANS Postretirement Medical Benefits We share certain costs of providing health and life insurance benefits to eligible retired Associates (employees) and their eligible dependents. Previously, all Associates were eligible for these benefits if they reached normal retirement age while working for us. Effective March 31, 2014, we changed the eligibility of this plan to include only those Associates who have achieved ten years of service with us as of March 31, 2014. As of December 31, 2014, we began to use the mortality table issued by the Office of the Actuary of the U.S. Bureau of Census in October 2014 in our calculation. We account for our obligations under the provisions of FASB ASC 715, Compensation - Retirement Benefits (ASC 715). ASC 715 requires that we recognize the costs of these benefits over an Associate’s active working career. Amortization of unrecognized net gains or losses resulting from experience different from that assumed and from changes in assumptions is included as a component of net periodic benefit cost over the remaining service period of active employees to the extent that such gains and losses exceed 10% of the accumulated postretirement benefit obligation, as of the beginning of the year. We recognize our net periodic benefit cost in Salaries, benefits and other compensation in our Consolidated Statements of Income. The following are disclosures of the net periodic benefit cost components of postretirement medical benefits measured at January 1, 2018 and 2017. Three months ended March 31, (Dollars in thousands) 2018 2017 Service cost $ 15 $ 15 Interest cost 17 19 Prior service cost amortization (19 ) (19 ) Net gain recognition (11 ) (16 ) Net periodic benefit cost $ 2 $ (1 ) Alliance Associate Pension Plan During the fourth quarter of 2015, we completed the acquisition of Alliance and its wholly owned subsidiary, Alliance Bank, headquartered in Broomall, Pennsylvania. At the time of the acquisition we assumed the Alliance pension plan offered to its current associates. The following table shows the net periodic benefit cost components for the Alliance Associate Pension Plan benefits measured at January 1, 2018. (Dollars in thousands) Three months ended March 31, 2018 2017 Service cost $ 10 $ 10 Interest cost 73 75 Expected return on plan assets (135 ) (135 ) Prior service cost amortization — — Net gain recognition — — Net periodic benefit cost $ (52 ) $ (50 )

INCOME TAXES

INCOME TAXES	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES We account for income taxes in accordance with FASB ASC 740, Income Taxes (ASC 740). ASC 740 requires the recording of deferred income taxes that reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. We exercise significant judgment in the evaluation of the amount and timing of the recognition of the resulting tax assets and liabilities. The judgments and estimates required for the evaluation are updated based on changes in business factors and the tax laws. If actual results differ from the assumptions and other considerations used in estimating the amount and timing of tax recognized, there can be no assurance that additional expenses will not be required in future periods. ASC 740 prescribes a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. We recognize, when applicable, interest and penalties related to unrecognized tax benefits in the provision for income taxes in the financial statements. Assessment of uncertain tax positions under ASC 740 requires careful consideration of the technical merits of a position based on our analysis of tax regulations and interpretations. We accounted for the tax effects of the Tax Cuts and Jobs Act, enacted on December 22, 2017, on a provisional basis. At December 31, 2017, the accounting for certain income tax effects was incomplete, but we determined reasonable estimates for those effects which were included in the financial statements. We expect to complete the accounting during 2018 in accordance with the one year measurement period. There were no unrecognized tax benefits as of March 31, 2018 . We record interest and penalties on potential income tax deficiencies as income tax expense. Our federal and state tax returns for the 2014 through 2017 tax years are subject to examination as of March 31, 2018 . We do not expect to record or realize any material unrecognized tax benefits during 2018 . As a result of the adoption of ASU No. 2014-01, “ Investments-Equity Method and Joint Ventures: Accounting for Investments in Qualified Affordable Housing Projects ,” the amortization of our low-income housing credit investments has been reflected as income tax expense. Accordingly, $0.5 million of such amortization has been reflected as income tax expense for the three months ended March 31, 2018 compared to $0.4 million for the same period in 2017. The amount of affordable housing tax credits, amortization and tax benefits recorded as income tax expense for the three months ended March 31, 2018 were $0.4 million , $0.5 million and $0.1 million , respectively. The carrying value of the investment in affordable housing credits is $13.3 million at March 31, 2018 , compared to $13.8 million at December 31, 2017 .

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION During the three months ended March 31, 2018, we issued stock-based compensation awards to certain associates including stock options and Restricted Stock Units (RSUs). The number of shares reserved for issuance under our 2013 Incentive Plan (2013 Plan) is 2,096,535 . At March 31, 2018 , there were 276,508 shares available for future grants under the 2013 Plan. We record stock-based compensation expense related to awards granted to associates in Salaries, benefits and other compensation ; expense related to awards granted to directors is recorded in Other operating expense in our Consolidated Statements of Income. Total stock-based compensation expense recognized during the three months ended March 31, 2018 and 2017 was $1.0 million ( $0.8 million after tax) and $0.9 million ( $0.6 million after tax), respectively. Stock Options During the three months ended March 31, 2018 , we awarded 72,521 stock options to certain Associates with a weighted average exercise price of $48.33 . Stock options granted during 2018 vest in 25% per annum increments, start to become exercisable one year from the grant date and expire seven years from the grant date. We issue new shares upon the exercise of options. We determine the grant date fair value of stock options using the Black-Scholes option-pricing model. The model requires the use of numerous assumptions, many of which are subjective. The expected term was derived from historical exercise patterns and represents the amount of time that stock options granted are expected to be outstanding. Other significant assumptions used to determine the grant date fair value of options granted in 2018 include volatility measured using the fluctuation in month end closing stock prices over a period which corresponds with the average expected option life; a weighted-average risk-free rate of return (zero coupon treasury yield); and a dividend yield indicative of our current dividend rate. The following table summarizes the assumptions we used to value options awarded during the three months ended March 31, 2018 : March 31, 2018 Expected term (in years) 5.3 Volatility 23.0 % Weighted-average risk-free interest rate 2.69 % Dividend yield 0.74 % The total amount of unrecognized compensation cost related to nonvested stock options as of March 31, 2018 was $1.3 million . The weighted-average period over which the expense is expected to be recognized is 2.84 years. During the first quarter of 2018 , we recognized $0.3 million of compensation expense related to these awards. Restricted Stock and Restricted Stock Units During three months ended March 31, 2018 , we awarded 44,177 RSUs to certain Associates with a grant date fair value per unit of $48.40 . RSUs are granted at no cost to the recipient and generally vest over a four year period. All outstanding awards granted to senior executives vest over no less than a four year period. The 2013 Plan allows for awards with vesting periods less than four years subject to Board approval. The fair value of RSUs is equal to the fair value of our Common Stock on the date of grant. The total amount of compensation cost to be recognized relating to non-vested restricted stock as of March 31, 2018 was $3.8 million . The weighted average period over which the expense is expected to be recognized is 2.91 years. During the three months ended March 31, 2018 , we recognized $0.6 million of compensation cost related to these awards.

FAIR VALUE DISCLOSURES OF FINAN

FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES	FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES ASC 820-10 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820-10 establishes a fair value hierarchy that prioritizes the use of inputs used in valuation methodologies into the following three levels: • Level 1: Inputs to the valuation methodology are quoted prices, unadjusted, for identical assets or liabilities in active markets. A quoted price in an active market provides the most reliable evidence of fair value and shall be used to measure fair value whenever available. • Level 2: Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; inputs to the valuation methodology include quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs to the valuation methodology that are derived principally from or can be corroborated by observable market data by correlation or other means. • Level 3: Inputs to the valuation methodology are unobservable and significant to the fair value measurement. Level 3 assets and liabilities include financial instruments whose value is determined using discounted cash flow methodologies, as well as instruments for which the determination of fair value requires significant management judgment or estimation. The following tables present financial instruments carried at fair value as of March 31, 2018 and December 31, 2017 by level in the valuation hierarchy (as described above): March 31, 2018 (Dollars in thousands) Quoted Prices in Active Markets for Identical Asset (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Fair Value Assets measured at fair value on a recurring basis: Available-for-sale securities: CMO $ — $ 269,236 $ — $ 269,236 FNMA MBS — 509,000 — 509,000 FHLMC MBS — 97,299 — 97,299 GNMA MBS — 32,283 — 32,283 Other investments 617 — — 617 Other assets — 1,168 — 1,168 Total assets measured at fair value on a recurring basis $ 617 $ 908,986 $ — $ 909,603 Liabilities measured at fair value on a recurring basis: Other liabilities $ — $ 4,335 $ — $ 4,335 Assets measured at fair value on a nonrecurring basis: Other investments $ — $ — $ 32,746 $ 32,746 Other real estate owned — — 2,567 2,567 Loans held for sale — 15,937 — 15,937 Impaired loans, net — — 56,154 56,154 Total assets measured at fair value on a nonrecurring basis $ — $ 15,937 $ 91,467 $ 107,404 December 31, 2017 (Dollars in thousands) Quoted Prices in Active Markets for Identical Asset (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Fair Value Assets measured at fair value on a recurring basis: Available-for-sale securities: CMO $ — $ 246,539 $ — $ 246,539 FNMA MBS — 473,987 — 473,987 FHLMC MBS — 87,875 — 87,875 GNMA MBS — 29,098 — 29,098 GSE — — — — Other investments 623 — — 623 Other assets — 747 — 747 Total assets measured at fair value on a recurring basis $ 623 $ 838,246 $ — $ 838,869 Liabilities measured at fair value on a recurring basis: Other liabilities $ — $ 3,225 $ — $ 3,225 Assets measured at fair value on a nonrecurring basis Other investments $ — $ — $ 17,348 $ 17,348 Other real estate owned — — 2,503 2,503 Loans held for sale — 31,055 — 31,055 Impaired loans, net — — 57,089 57,089 Total assets measured at fair value on a nonrecurring basis $ — $ 31,055 $ 76,940 $ 107,995 There were no transfers between Level 1 and Level 2 of the fair value hierarchy during the three months ended March 31, 2018 . Fair value is based on quoted market prices, where available. If such quoted market prices are not available, fair value is based on internally developed models or obtained from third parties that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include unobservable parameters. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While we believe our valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Available-for-sale securities As of March 31, 2018 , securities classified as available-for-sale are reported at fair value using Level 2 inputs. Included in the Level 2 total are $907.8 million in Federal Agency MBS. We believe that this Level 2 designation is appropriate for these securities under ASC 820-10 as, with almost all fixed income securities, none are exchange traded, and all are priced by correlation to observed market data. For these securities we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, U.S. government and agency yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the security’s terms and conditions, among other factors. Other investments Other investments includes our investments in equity securities with and without readily determinable fair values. Equity investments with readily determinable fair values are categorized as Level 1. Equity investments without readily determinable fair values, which includes our Visa Class B shares, are categorized as Level 3. Our Visa Class B ownership includes shares acquired at no cost from our prior participation in Visa’s network while Visa operated as a cooperative as well as shares subsequently acquired through private transactions and auctions. Our equity investments without readily determinable fair values are held at cost, and are adjusted for any observable transactions during the reporting period. As a result of our adoption of ASU 2016-01 and observable market transactions, we recorded an unrealized gain on these shares of $15.3 million as of March 31, 2018 . See Note 4 for further information. Other real estate owned Other real estate owned consists of loan collateral which has been repossessed through foreclosure or other measures. Initially, foreclosed assets are recorded at the lower of the loan balance or fair value of the collateral less estimated selling costs. Subsequent to foreclosure, valuations are updated periodically and the assets may be marked down further, reflecting a new cost basis. The fair value of our real estate owned was estimated using Level 3 inputs based on appraisals obtained from third parties. Loans held for sale The fair value of our loans held for sale is based on estimates using Level 2 inputs. These inputs are based on pricing information obtained from wholesale mortgage banks and brokers and applied to loans with similar interest rates and maturities. Impaired loans We evaluate and value impaired loans at the time the loan is identified as impaired, and the fair values of such loans are estimated using Level 3 inputs in the fair value hierarchy. Each loan’s collateral has a unique appraisal and management’s discount of the value is based on the factors unique to each impaired loan. The significant unobservable input in determining the fair value is management’s subjective discount on appraisals of the collateral securing the loan, which typically ranges from 10% - 20% . Collateral may consist of real estate and/or business assets including equipment, inventory and/or accounts receivable and the value of these assets is determined based on the appraisals by qualified licensed appraisers hired by us. Appraised and reported values may be discounted based on management’s historical knowledge, changes in market conditions from the time of valuation, estimated costs to sell, and/or management’s expertise and knowledge of the client and the client’s business. The gross amount of impaired loans, which are measured for impairment by either calculating the expected future cash flows discounted at the loan’s effective interest rate or determining the fair value of the collateral for collateral dependent loans was $59.9 million and $62.1 million at March 31, 2018 and December 31, 2017 , respectively. The valuation allowance on impaired loans was $3.8 million as of March 31, 2018 and $5.0 million as of December 31, 2017 . FAIR VALUE OF FINANCIAL INSTRUMENTS The reported fair values of financial instruments are based on a variety of factors. In certain cases, fair values represent quoted market prices for identical or comparable instruments. In other cases, fair values have been estimated based on assumptions regarding the amount and timing of estimated future cash flows that are discounted to reflect current market rates and varying degrees of risk. Accordingly, the fair values may not represent actual values of the financial instruments that could have been realized as of period-end or that will be realized in the future. The following methods and assumptions were used to estimate the fair value of each class of financial instruments for which it is practicable to estimate that value: Cash and cash equivalents For cash and short-term investment securities, including due from banks, federal funds sold or purchased under agreements to resell and interest-bearing deposits with other banks, the carrying amount is a reasonable estimate of fair value. Investment securities Fair value is estimated using quoted prices for similar securities, which we obtain from a third party vendor. We utilize one of the largest providers of securities pricing to the industry and management periodically assesses the inputs used by this vendor to price the various types of securities owned by us to validate the vendor’s methodology as described above in available-for-sale securities. Other investments Other investments includes our investments in equity securities with and without readily determinable fair values (see discussion in “Fair Value of Financial Assets and Liabilities” section above). Loans held for sale Loans held for sale are carried at their fair value (see discussion in “Fair Value of Financial Assets and Liabilities” section above). Loans Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type: commercial, commercial mortgages, owner-occupied commercial, construction, residential mortgages and consumer. For loans that reprice frequently, the book value approximates fair value. The fair values of other types of loans, with the exception of reverse mortgages, are estimated by discounting expected cash flows using the current rates at which similar loans would be made to borrowers with comparable credit ratings and for similar remaining maturities. The fair values of reverse mortgages are based on the net present value of the expected cash flows using a discount rate specific to the reverse mortgages portfolio. The fair value of nonperforming loans is based on recent external appraisals of the underlying collateral. Estimated cash flows, discounted using a rate commensurate with current rates and the risk associated with the estimated cash flows, are utilized if appraisals are not available. This technique does not contemplate an exit price. Stock in the Federal Home Loan Bank (FHLB) of Pittsburgh The fair value of FHLB stock is assumed to be equal to its cost basis, since the stock is non-marketable but redeemable at its par value. Other assets Other assets includes, among other things, investments in subsidiaries, prepaid expenses, interest and fee income receivable, derivative financial instruments and deferred tax assets (see discussion in “Fair Value of Financial Assets and Liabilities” section above). Deposits The fair value of deposits with no stated maturity, such as noninterest-bearing demand deposits, money market and interest-bearing demand deposits, is assumed to be equal to the amount payable on demand. The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is estimated using rates currently offered for deposits with comparable remaining maturities. Borrowed funds Rates currently available to us for debt with similar terms and remaining maturities are used to estimate fair value of existing debt. Other Liabilities Other liabilities includes, among others, cash flow derivatives and derivative on the residential mortgage held for sale pipeline. Valuation of our cash flow derivative is obtained from an independent pricing service and also from the derivative counterparty. Valuation for the residential mortgage held for sale pipeline is based on valuation of the loans held for sale portfolio as described above in Loans held for sale. Off-balance sheet instruments The fair value of off-balance sheet instruments, including commitments to extend credit and standby letters of credit, approximates the recorded net deferred fee amounts, which are not significant. Because commitments to extend credit and letters of credit are generally not assignable by either us or the borrower, they only have value to us and the borrower. The book value and estimated fair value of our financial instruments are as follows: (Dollars in thousands) March 31, 2018 December 31, 2017 Fair Value Measurement Book Value Fair Value Book Value Fair Value Financial assets: Cash and cash equivalents Level 1 $ 711,089 $ 711,089 $ 723,866 $ 723,866 Investment securities available for sale See previous table 907,818 907,818 837,499 837,499 Investment securities held to maturity Level 2 159,672 159,164 161,186 162,853 Other investments Level 1,3 33,363 33,363 17,971 48,050 Loans, held for sale Level 2 15,937 15,937 31,055 31,055 Loans, net (1)(2) Level 2,3 4,749,604 4,732,340 4,719,229 4,699,458 Impaired loans, net Level 3 56,154 56,154 57,089 57,089 Stock in FHLB of Pittsburgh Level 2 28,854 28,854 31,284 31,284 Accrued interest receivable Level 2 19,969 19,969 19,405 19,405 Other assets Level 3 1,606 1,606 790 790 Financial liabilities: Deposits Level 2 5,202,515 4,768,066 5,247,604 4,848,588 Borrowed funds Level 2 932,197 925,902 937,806 937,605 Standby letters of credit Level 3 562 562 603 603 Accrued interest payable Level 2 3,450 3,450 1,037 1,037 Other liabilities Level 2 4,335 4,335 3,188 3,188 (1) Excludes impaired loans, net. (2) Includes reverse mortgage loans, which are categorized as Level 3. At March 31, 2018 and December 31, 2017 we had no commitments to extend credit measured at fair value.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	DERIVATIVE FINANCIAL INSTRUMENTS Risk Management Objective of Using Derivatives We are exposed to certain risks arising from both economic conditions and our business operations. We principally manage our exposures to a wide variety of business and operational risks through management of our core business activities. We manage economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of our assets and liabilities. We manage a matched book with respect to our derivative instruments in order to minimize our net risk exposure resulting from such transactions. Our cash flow hedging program began in the third quarter of 2016. Fair Values of Derivative Instruments The table below presents the fair value of our derivative financial instruments as well as their location on the Consolidated Statements of Financial Condition as of March 31, 2018 . Fair Values of Derivative Instruments (Dollars in thousands) Count Notional Balance Sheet Location Liability Derivatives (Fair Value) Derivatives designated as hedging instruments: Interest rate products 3 $ 75,000 Other Liabilities $ (4,198 ) Total $ 75,000 $ (4,198 ) Derivatives not designated as hedging instruments: Interest rate lock commitment with customers 62,920 Other Assets $ 929 Interest rate lock commitment with customers 9,558 Other Liabilities (42 ) Forward sale commitments 32,895 Other Assets 238 Forward sale commitments 36,014 Other Liabilities (108 ) Total $ 141,387 $ 1,017 Total derivatives $ 216,387 $ (3,181 ) Cash Flow Hedges of Interest Rate Risk Our objectives in using interest rate derivatives are to add stability to interest income and to manage our exposure to interest rate movements. To accomplish this objective, we primarily use interest rate swaps as part of our interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of fixed amounts from a counterparty in exchange for us making variable-rate payments over the life of the agreements without exchange of the underlying notional amount. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecast transaction affects earnings. During the three months ended March 31, 2018 , such derivatives were used to hedge the variable cash flows associated with a variable rate loan pool. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three months ended March 31, 2018 , we did not record any hedge ineffectiveness. Amounts reported in accumulated other comprehensive income related to derivatives are reclassified to interest income as interest payments are received on our variable-rate pooled loans. During the next twelve months, we estimate that $0.8 million will be reclassified as an increase to interest income. During the three months ended March 31, 2018 , $0.1 million was reclassified into interest income. We are hedging our exposure to the variability in future cash flows for forecasted transactions over a maximum period of 1 month (excluding forecasted transactions related to the payment of variable interest on existing financial instruments). As of March 31, 2018 , we had three outstanding interest rate derivatives with a notional of $75 million that were designated as cash flow hedges of interest rate risk. Effect of Derivative Instruments on the Income Statement The table below presents the effect of the derivative financial instruments on the Consolidated Statements of Income for the three months ended March 31, 2018 and March 31, 2017 . (Dollars in thousands) Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion) Location of Gain or (Loss)Reclassified from Accumulated OCI into Income (Effective Portion) Three months ended March 31, Derivatives in Cash Flow Hedging Relationships 2018 2017 Interest Rate Products $ (764 ) $ (3,039 ) Interest income Total $ (764 ) $ (3,039 ) Amount of Gain or (Loss) Recognized in Income Location of Gain or (Loss) Recognized in Income (Dollars in thousands) Three months ended March 31, Derivatives Not Designated as a Hedging Instrument 2018 2017 Interest Rate Lock Commitments $ 1,100 $ — Mortgage banking activity, net Forward Sale Commitments (83 ) $ — Mortgage banking activity, net Total $ 1,017 $ — Credit risk-related Contingent Features We have agreements with certain of our derivative counterparties that contain a provision where if we default on any of our indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then we could also be declared in default on our derivative obligations. We also have agreements with certain of our derivative counterparties that contain a provision where if we fail to maintain our status as a well/adequately capitalized institution, then the counterparty could terminate the derivative positions and we would be required to settle our obligations under the agreements. As of March 31, 2018 , the termination value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $(4.2) million . We have minimum collateral posting thresholds with certain of our derivative counterparties, and have posted collateral of $4.5 million against our obligations under these agreements. If we had breached any of these provisions at March 31, 2018 , we could have been required to settle our obligations under the agreements at the termination value.

SEGMENT INFORMATION

SEGMENT INFORMATION	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION As defined in FASB ASC 280, Segment Reporting (ASC 280), an operating segment is a component of an enterprise that engages in business activities from which it may earn revenues and incur expenses, whose operating results are regularly reviewed by the enterprise’s chief operating decision makers to make decisions about resources to be allocated to the segment and assess its performance, and for which discrete financial information is available. We evaluate performance based on pretax net income relative to resources used, and allocate resources based on these results. The accounting policies applicable to our segments are those that apply to our preparation of the accompanying unaudited Consolidated Financial Statements. Based on these criteria, we have identified three segments: WSFS Bank, Cash Connect ® , and Wealth Management. The WSFS Bank segment provides financial products to commercial and retail customers. Retail and Commercial Banking, Commercial Real Estate Lending and other banking business units are operating departments of WSFS Bank. These departments share the same regulator, the same market, many of the same customers and provide similar products and services through the general infrastructure of the Bank. Accordingly, these departments are not considered discrete segments and are appropriately aggregated within the WSFS Bank segment in accordance with ASC 280. Cash Connect ® provides ATM vault cash and smart safe and cash logistics services through strategic partnerships with several of the largest networks, manufacturers and service providers in the ATM industry. Cash Connect ® services non-bank and WSFS-branded ATMs and retail safes nationwide. The balance sheet category “Cash in non-owned ATMs” includes cash from which fee income is earned through bailment arrangements with customers of Cash Connect ® . The Wealth Management segment provides a broad array of fiduciary, investment management, credit and deposit products to clients through six business lines. WSFS Wealth Investments provides insurance and brokerage products primarily to our retail banking clients. Cypress, a registered investment adviser whose primary market segment is high-net-worth individuals, offers a "balanced" investment style focused on preservation of capital and providing current income. West Capital, a registered investment adviser, is a fee-only wealth management firm which operates under a multi-family office philosophy and provides fully-customized solutions tailored to the unique needs of institutions and high-net-worth individuals. Christiana Trust provides fiduciary and investment services to personal trust clients, and trustee, agency, bankruptcy administration, custodial and commercial domicile services to corporate and institutional clients. Powdermill is a multi-family office that specializes in providing unique, independent solutions to high-net-worth individuals, families and corporate executives through a coordinated, centralized approach. WSFS Wealth Client Management serves high-net-worth clients by delivering credit and deposit products and partnering with other business units to deliver investment management and fiduciary products and services. The following table shows segment results for the three months ended March 31, 2018 and 2017 : Three months ended March 31, 2018 Three months ended March 31, 2017 (Dollars in thousands) WSFS Bank Cash ® Wealth Management Total WSFS Bank Cash ® Wealth Total Statements of Income External customer revenues: Interest income $ 65,290 $ — $ 2,323 $ 67,613 $ 58,688 $ — $ 2,138 $ 60,826 Noninterest income 26,606 11,353 9,508 47,467 10,167 9,677 8,248 28,092 Total external customer revenues 91,896 11,353 11,831 115,080 68,855 9,677 10,386 88,918 Inter-segment revenues: Interest income 2,968 — 2,363 5,331 1,996 — 2,065 4,061 Noninterest income 2,108 181 34 2,323 2,164 191 36 2,391 Total inter-segment revenues 5,076 181 2,397 7,654 4,160 191 2,101 6,452 Total revenue 96,972 11,534 14,228 122,734 73,015 9,868 12,487 95,370 External customer expenses: Interest expense 9,503 — 396 9,899 7,463 — 260 7,723 Noninterest expenses 39,435 7,319 6,658 53,412 38,960 6,135 6,411 51,506 Provision for loan losses 3,661 — (11 ) 3,650 1,716 — 446 2,162 Total external customer expenses 52,599 7,319 7,043 66,961 48,139 6,135 7,117 61,391 Inter-segment expenses: Interest expense 2,363 2,059 909 5,331 2,065 1,405 591 4,061 Noninterest expenses 215 672 1,436 2,323 227 715 1,449 2,391 Total inter-segment expenses 2,578 2,731 2,345 7,654 2,292 2,120 2,040 6,452 Total expenses 55,177 10,050 9,388 74,615 50,431 8,255 9,157 67,843 Income before taxes $ 41,795 $ 1,484 $ 4,840 $ 48,119 $ 22,584 $ 1,613 $ 3,330 $ 27,527 Income tax provision 10,769 8,590 Consolidated net income $ 37,350 $ 18,937 The following table shows significant components of segment net assets as of March 31, 2018 and December 31, 2017 : March 31, 2018 December 31, 2017 (Dollars in thousands) WSFS Bank Cash ® Wealth Total WSFS Bank Cash ® Wealth Management Total Statements of Financial Condition Cash and cash equivalents $ 112,124 $ 588,862 $ 10,103 $ 711,089 $ 104,530 $ 611,385 $ 7,951 $ 723,866 Goodwill 145,808 — 20,199 166,007 145,808 — 20,199 166,007 Other segment assets 5,880,317 6,717 223,801 6,110,835 5,882,910 6,078 220,679 6,109,667 Total segment assets $ 6,138,249 $ 595,579 $ 254,103 $ 6,987,931 $ 6,133,248 $ 617,463 $ 248,829 $ 6,999,540 Capital expenditures $ 2,070 $ 32 $ 122 $ 2,224 $ 8,197 $ 184 $ 613 $ 8,994

INDEMNIFICATIONS AND GUARANTEES

INDEMNIFICATIONS AND GUARANTEES	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
INDEMNIFICATIONS AND GUARANTEES	INDEMNIFICATIONS AND GUARANTEES Secondary Market Loan Sales Given the current interest rate environment and our overall asset and liability management approach, we typically sell newly originated residential mortgage loans in the secondary market to mortgage loan aggregators and on a more limited basis, to government sponsored entities (GSEs) such as FHLMC, FNMA, and the FHLB. Loans held for sale are reflected on our unaudited Consolidated Statements of Financial Condition at fair value with changes in the value reflected in our unaudited Consolidated Statements of Income. Gains and losses are recognized at the time of sale. We periodically retain the servicing rights on residential mortgage loans sold which results in monthly service fee income. The mortgage servicing rights are included in our intangible assets in our unaudited Consolidated Statements of Financial Condition. Otherwise, we sell loans with servicing released on a nonrecourse basis. Rate-locked loan commitments that we intend to sell in the secondary market are accounted for as derivatives under ASC Topic 815, Derivatives and Hedging (ASC 815) . We do not sell loans with recourse, except for standard loan sale contract provisions covering violations of representations and warranties and, under certain circumstances, early payment default by the borrower. These are customary repurchase provisions in the secondary market for residential mortgage loan sales. These provisions may include either an indemnification from loss or the repurchase of the loans. Repurchases and losses have been rare and no provision is made for losses at the time of sale. There were no such repurchases for the three months ended March 31, 2018 . Swap Guarantees We entered into agreements with four unrelated financial institutions whereby those financial institutions entered into interest rate derivative contracts (interest rate swap transactions) with customers referred to them by us. Under the terms of the agreements, those financial institutions have recourse to us for any exposure created under each swap transaction in the event that the customer defaults on the swap agreement and the agreement is in a paying position to the third-party financial institution. This is a customary arrangement that allows us to provide access to interest rate swap transactions for our customers without creating the swap ourselves. These swap guarantees are accounted for as credit derivatives . At March 31, 2018 and December 31, 2017 , there were 129 and 134 variable-rate to fixed-rate swap transactions between the third party financial institutions and our customers. The initial notional aggregate amount was approximately $558.3 million at March 31, 2018 compared to $561.8 million at December 31, 2017 . At March 31, 2018 maturities ranged from under one year to ten years. The aggregate market value of these swaps to the customers was a liability of $4.7 million at March 31, 2018 and $3.3 million at December 31, 2017 . We had no reserves for the swap guarantees as of March 31, 2018 .

CHANGE IN ACCUMULATED OTHER COM

CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS	CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS Accumulated other comprehensive loss includes unrealized gains and losses on available-for-sale investments, unrealized gains and losses on cash flow hedges, as well as unrecognized prior service costs, transition costs, and actuarial gains and losses on defined benefit pension plans. Changes to accumulated other comprehensive loss are presented net of tax as a component of stockholders' equity. Amounts that are reclassified out of accumulated other comprehensive loss are recorded on the Consolidated Statement of Income either as a gain or loss. Changes to accumulated other comprehensive loss by component are shown net of taxes in the following tables for the period indicated: (Dollars in thousands) Net change in investment securities available for sale Net change in securities held to maturity Net change in defined benefit plan Net change in fair value of derivative used for cash flow hedge Total Balance, December 31, 2017 $ (7,842 ) $ 1,223 $ 865 $ (2,398 ) $ (8,152 ) Other comprehensive (loss) income before reclassifications (11,827 ) — — (765 ) (12,592 ) Less: Amounts reclassified from accumulated other comprehensive (loss) income (16 ) (119 ) 59 — (76 ) Net current-period other comprehensive (loss) income (11,843 ) (119 ) 59 (765 ) (12,668 ) Balance, March 31, 2018 $ (19,685 ) $ 1,104 $ 924 $ (3,163 ) $ (20,820 ) Balance, December 31, 2016 $ (8,194 ) $ 1,392 $ 957 $ (1,772 ) $ (7,617 ) Other comprehensive income (loss) before reclassifications 1,272 — — (112 ) 1,160 Less: Amounts reclassified from accumulated other comprehensive (loss) income (206 ) (101 ) (23 ) — (330 ) Net current-period other comprehensive income (loss) 1,066 (101 ) (23 ) (112 ) 830 Balance, March 31, 2017 $ (7,128 ) $ 1,291 $ 934 $ (1,884 ) $ (6,787 ) The Consolidated Statements of Income were impacted by components of other comprehensive income (loss) as shown in the table below: (Dollars in thousands) Three Months Ended March 31, Affected line item in Consolidated Statements of Income 2018 2017 Securities available for sale: Realized gains on securities transactions $ (21 ) $ (320 ) Security gains, net Income taxes 5 114 Income tax provision Net of tax $ (16 ) $ (206 ) Net unrealized holding gains on securities transferred between available-for-sale and held-to-maturity: Amortization of net unrealized gains to income during the period $ (156 ) $ (160 ) Interest income on investment securities Income taxes 37 59 Income tax provision Net of tax $ (119 ) $ (101 ) Amortization of Defined Benefit Pension items: Prior service costs (credits) (1) $ 59 $ (19 ) Transition obligation — — Actuarial gains (11 ) (16 ) Total before tax $ 48 $ (35 ) Salaries, benefits and other compensation Income taxes 11 12 Income tax provision Net of tax 59 (23 ) Total reclassifications $ (76 ) $ (330 ) (1) The March 31, 2018 prior service costs balance includes a tax true-up adjustment of $0.1 million . Note that the tax true-up was made to the deferred tax asset with an offset to AOCI and does not affect the actual net periodic benefit costs of the pension plan.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	3 Months Ended
	Mar. 31, 2018
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS In the ordinary course of business, from time to time we enter into transactions with related parties, including, but not limited to, our officers and directors. These transactions are made on substantially the same terms and conditions, including interest rates and collateral requirements, as those prevailing at the same time for comparable transactions with other customers. They do not, in the opinion of management, involve greater than normal credit risk or include other unfavorable features. The outstanding balances of loans to related parties at March 31, 2018 and December 31, 2017 were $2.0 million and $1.2 million , respectively. Total deposits from related parties at March 31, 2018 and December 31, 2017 were $6.9 million and $5.4 million , respectively. During the first quarter of 2018, new loans and credit line advances to related parties were $0.8 million and repayments were less than $0.1 million .

LEGAL AND OTHER PROCEEDINGS

LEGAL AND OTHER PROCEEDINGS	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
LEGAL AND OTHER PROCEEDINGS	LEGAL AND OTHER PROCEEDINGS In accordance with the current accounting standards for loss contingencies, we establish reserves for litigation-related matters that arise in the ordinary course of our business activities when it is probable that a loss associated with a claim or proceeding has been incurred and the amount of the loss can be reasonably estimated. Litigation claims and proceedings of all types are subject to many uncertain factors that generally cannot be predicted with assurance. In addition, our defense of litigation claims may result in legal fees, which we expense as incurred. As previously disclosed, on February 27, 2018 , we entered into a settlement agreement with Universitas Education, LLC (Universitas) to resolve claims related to services provided by Christiana Bank and Trust Company (Christiana Trust) prior to its acquisition by WSFS in December 2010. In accordance with the settlement agreement, we paid Universitas $12.0 million to fully settle the claims. WSFS will pursue all of its rights and remedies to recover this settlement payment and related costs, including by enforcing the indemnity right in the 2010 purchase agreement by which we acquired Christiana Trust. Additionally, we have taken steps to recover expenses from various insurance carriers. We intend to pursue all claims that we have for full restitution of this settlement. There were no material changes or additions to other significant pending legal or other proceedings involving us other than those arising out of routine operations.

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	3 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	General Our unaudited Consolidated Financial Statements include the accounts of WSFS Financial Corporation (the Company or WSFS), Wilmington Savings Fund Society, FSB (WSFS Bank or the Bank), WSFS Wealth Management, LLC (Powdermill), WSFS Capital Management, LLC (West Capital), Cypress Capital Management, LLC (Cypress) and Christiana Trust Company of Delaware (Christiana Trust DE). We also have one unconsolidated subsidiary, WSFS Capital Trust III. WSFS Bank has three wholly-owned subsidiaries: WSFS Wealth Investments, 1832 Holdings, Inc. and Monarch Entity Services LLC. Overview Founded in 1832, the Bank is one of the ten oldest bank and trust companies continuously operating under the same name in the United States (U.S.). We provide residential and commercial real estate, commercial and consumer lending services, as well as retail deposit and cash management services. Lending activities are funded primarily with customer deposits and borrowings. In addition, we offer a variety of wealth management and trust services to personal and corporate customers. The Federal Deposit Insurance Corporation (FDIC) insures our customers’ deposits to their legal maximums. We serve our customers primarily from our 77 offices located in Delaware ( 46 ), Pennsylvania ( 29 ), Virginia ( 1 ) and Nevada ( 1 ) and through our website at www.wsfsbank.com . Information on our website is not incorporated by reference into this quarterly report. In preparing the unaudited Consolidated Financial Statements, we are required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. Amounts subject to significant estimates include the allowance for loan losses and reserves for lending related commitments, goodwill, intangible assets, post-retirement benefit obligations, the fair value of financial instruments, and other-than-temporary impairment (OTTI). Among other effects, changes to these estimates could result in future impairments of investment securities, goodwill and intangible assets and establishment of the allowance and lending related commitments as well as increased post-retirement benefits expense. Our accounting and reporting policies conform to Generally Accepted Accounting Principles (GAAP) in the U.S., prevailing practices within the banking industry for interim financial information and Rule 10-01 of SEC Regulation S-X (Rule 10-01). Rule 10-01 does not require us to include all information and notes that would be required in audited financial statements. Certain prior period amounts have been reclassified to conform with current period presentation. Operating results for the periods presented are not necessarily indicative of the results that may be expected for any future quarters or for the year ending December 31, 2018 . These unaudited, interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2017 (the 2017 Annual Report on Form 10-K) that was filed with the SEC on March 1, 2018 and is available at www.sec.gov or on our website at http://investors.wsfsbank.com/financials.cfm. All significant intercompany transactions were eliminated in consolidation. Significant Accounting Policies: The significant accounting policies used in preparation of our Consolidated Financial Statements are disclosed in our 2017 Annual Report on Form 10-K. Those significant accounting policies are unchanged at March 31, 2018 except as described below:
Equity Securities	Equity Securities We account for our investments in equity securities in accordance with ASC 321-10 " Investments - Equity Securities." Our equity securities are classified into two categories and accounted for as follows: • Equity securities with a readily determinable fair value are reported at fair value, with unrealized gains and losses included in earnings. Any dividends received are recorded in interest income. • Equity securities without a readily determinable fair value are reported at their cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Any dividends received are recorded in interest income. Equity investments include our investment in Visa Class B shares and certain other equity investments. The fair value of equity investments with readily determinable fair values is primarily obtained from third-party pricing services. For equity investments without readily determinable fair values, when an orderly transaction for the identical or similar investment of the same issuer is identified, we use the valuation techniques permitted under ASC 820 Fair Value to evaluate the observed transaction(s) and adjust the fair value of the equity investment. ASC 321-10 also provides guidance related to accounting for impairment of equity securities without readily determinable fair values. The qualitative assessment to determine whether impairment exists requires the use of our judgment in certain circumstances. If, after completing the qualitative assessment we conclude an equity investment without a readily determinable fair value is impaired, a loss for the difference between the equity investment’s carrying value and its fair value may be recognized as a reduction to noninterest income in the Consolidated Statements of Income.
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Accounting Guidance Adopted in 2018 In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU supersedes the revenue recognition requirements in ASC 605, Revenue Recognition . ASU No. 2014-09 will require an entity to recognize revenue when it transfers promised goods or services to customers using a five-step model that requires entities to exercise judgment when considering the terms of the contracts. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date . This amendment defers the effective date of ASU 2014-09 by one year. In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations (Reporting Gross versus Net), which amends the principal versus agent guidance and clarifies that the analysis must focus on whether the entity has control of the goods or services before they are transferred to the customer. In addition, the FASB issued ASU Nos. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers and 2016-12, Narrow-Scope Improvements and Practical Expedients , both of which provide additional clarification of certain provisions in Topic 606. These ASC updates were effective for public business entities annual and interim reporting periods in fiscal years beginning after December 15, 2017. The standard permits the use of either the retrospective or retrospectively with the cumulative effect transition method. The Company adopted the standard on January 1, 2018. Consistent with the transition guidance in ASC 606, results for reporting periods beginning after January 1, 2018 are presented in accordance with ASC 606, while prior period amounts are reported in accordance with ASC 605. For revenue streams determined to be within the scope of the new standard, we concluded that the adoption of the standard did not have a material effect on our Consolidated Financial Statements at the time of adoption. See Note 2 for additional disclosures resulting from our adoption of this standard. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. This amendment requires that equity investments be measured at fair value with changes in fair value recognized in net income. When fair value is not readily determinable an entity may elect to measure the equity investment at cost, minus impairment, plus or minus any change in the investment’s observable price. For financial liabilities that are measured at fair value, the amendment requires an entity to present separately, in other comprehensive income, any change in fair value resulting from a change in instrument specific credit risk. This guidance is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted. The standard requires retrospective application for equity investments with readily determinable fair values and prospective application for equity investments without readily determinable fair values. The Company adopted the standard on January 1, 2018 on a prospective basis for its equity investments without readily determinable fair values, and the adoption of the standard did not have an effect on our Consolidated Financial Statements at the time of adoption. Subsequent to the filing of our 2017 Annual Report on Form 10-K, we identified observable transactions related to an equity investment without a readily determinable fair value. These identified, observable transactions required the revaluation of this equity investment. The results of the revaluation was recorded in the Consolidated Statement of Income. See Note 11 for further information. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . ASU 2016-15 represents the Emerging Issues Task Force’s final consensus on eight issues related to the classification of cash payments and receipts in the statement of cash flows for a number of common transactions. The consensus also clarifies when identifiable cash flows should be separated versus classified based on their predominant source or use. This guidance is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The Company adopted this standard on January 1, 2018 on a retrospective basis and the adoption did not have an effect on its Consolidated Financial Statements. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. ASU 2017-01 provides a new, two-step framework for determining whether a transaction is accounted for as an acquisition (or disposal) of assets or a business. The first step is evaluating whether substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets; if so, the transaction is not considered a business. Also, in order to be considered a business, the transaction would need to include an input and a substantive process that together significantly contribute to the ability to create outputs. The guidance is effective for public entities in annual and interim periods in fiscal years beginning after December 15, 2017. Early adoption is permitted for transactions that have not been reported in financial statements that have been issued or been made available for issuance. The Company adopted this standard on January 1, 2018 on a prospective basis with no impact to its Consolidated Financial Statements at the time of adoption. In February 2017, the FASB issued ASU No. 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets. ASU 2017-05 provides clarification of the scope of ASC 610-20. Specifically, the new guidance clarifies that ASC 610-20 applies to nonfinancial assets which do not meet the definition of a business or not-for-profit activity. Further, the new guidance clarifies that a financial asset is within the scope of ASC 610-20 if it meets the definition of an in-substance nonfinancial asset which is defined as a financial asset promised to a counterparty in a contract where substantially all of the assets promised are nonfinancial. Finally, the new guidance clarifies that each distinct nonfinancial asset and in-substance nonfinancial asset should be derecognized when the counterparty obtains control of it. The guidance is effective in annual and interim reporting periods in fiscal years beginning after December 15, 2017. Early application is permitted for all entities, but not before annual reporting periods beginning after December 15, 2016. The Company adopted this standard on January 1, 2018 on a modified retrospective basis and the adoption did not have an effect on its Consolidated Financial Statements at the time of adoption. In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The new guidance requires that the service cost component of net periodic pension cost be disclosed with other compensation costs in the income statement. For all other cost components, an entity must either separately disclose the other cost components in separate line item(s) outside a subtotal of income from operations in the income statement or disclose the line item(s) used to present the other cost components in the income statement. The guidance is effective in annual and interim periods in fiscal years beginning after December 15, 2017. Early adoption is permitted. The Company adopted this standard on January 1, 2018 on a retrospective basis with no impact to its Consolidated Financial Statements at the time of adoption. In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting . The new guidance clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. If the award’s fair value, vesting conditions and classification remain the same immediately before and after the change, modification accounting is not applied. Additionally, the guidance does not require valuation before or after the change if the change does not affect any of the inputs to the model used to value the award. The guidance is effective in annual and interim periods beginning after December 15, 2017. Early adoption is permitted. The new guidance will be applied on a prospective basis to awards modified on or after the adoption date. The Company adopted this standard on January 1, 2018 on a prospective basis with no impact to its Consolidated Financial Statements at the time of adoption. Accounting Guidance Pending Adoption at March 31, 2018 In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . This ASU revises the accounting related to lessee accounting. Under the new guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases. The new lease guidance also simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. ASU 2016-02 is effective for the first interim period within annual periods beginning after December 15, 2018, with early adoption permitted. Adoption using the modified retrospective transition approach is required for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company does not plan to early adopt this guidance. The Company is in the process of identifying our complete lease population as defined by this guidance and expects to complete this analysis in the second quarter. The Company continues to evaluate our internal systems, accounting policies, processes and related internal controls for potential impacts. To date, our preliminary review suggests that adoption will result in additional assets and liabilities on our Consolidated Statement of Financial Condition which may require modification of the Company's internal systems, accounting policies, processes and related internal controls to allow for the calculation of the lease liability and right-of-use asset as required by this guidance. The Company will adopt this guidance on January 1, 2019. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326). ASU 2016-13 replaces the incurred loss impairment methodology in current GAAP with an expected credit loss methodology and requires consideration of a broader range of information to determine credit loss estimates. Financial assets measured at amortized cost will be presented at the net amount expected to be collected by using an allowance for credit losses. Purchased credit impaired loans will receive an allowance account at the acquisition date that represents a component of the purchase price allocation. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses, with such allowance limited to the amount by which fair value is below amortized cost. This guidance is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. The Company does not plan to early adopt this guidance. The Company's cross-functional team from Finance, Credit and IT are leading the implementation efforts to evaluate the impact of this guidance on its Consolidated Financial Statements, internal systems, accounting policies, processes and related internal controls. To date, our preliminary review of this guidance suggests that adoption may materially increase the allowance for loan losses and decrease capital levels; however, the extent of these impacts will depend on the asset quality of the portfolio and significant estimates and judgments made by management at the time of adoption. The team is currently completing due diligence on acceptable methodologies under the guidance and potential software solutions which could support the methodologies. The Company will adopt this guidance on January 1, 2020. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment . ASU 2017-04 simplifies the measurement of goodwill impairment by removing the hypothetical purchase price allocation. The new guidance requires an impairment of goodwill be measured as the amount by which a reporting unit’s carrying value exceeds its fair value, up to the amount of goodwill recorded. The guidance is effective in annual and interim periods in fiscal years beginning after December 15, 2019. Early adoption is permitted for goodwill impairment tests with measurement dates after January 1, 2017. The Company does not expect the application of this guidance to have a material impact on its Consolidated Financial Statements. In March 2017, the FASB issued ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities . The new guidance requires the amortization period for certain non-contingent callable debt securities held at a premium to end at the earliest call date of the debt security. If the call option is not exercised at the earliest call date, the guidance requires the debt security's effective yield to be reset based on the contractual payment terms of the debt security. The guidance is effective in annual and interim periods in fiscal years beginning after December 15, 2018. Early adoption is permitted. Use of the modified retrospective method, with a cumulative-effect adjustment to retained earnings, is required. In the period of adoption, a change in accounting principle disclosure is required. The Company does not expect the application of this guidance to have a material impact on its Consolidated Financial Statements. In August 2017, the FASB issued ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities . The new guidance changes both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. Specifically, the guidance eliminates the requirement to separately measure and report hedge ineffectiveness and also aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. Additionally, the new guidance provides entities the ability to apply hedge accounting to additional hedging strategies. The guidance is effective in annual and interim periods beginning after December 15, 2018. Early adoption is permitted. The Company does not expect the application of this guidance to have a material impact on its Consolidated Financial Statements.

NONINTEREST INCOME (Tables)

NONINTEREST INCOME (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Credit/debit Card and ATM Income	The following table presents the components of credit/debit card and ATM income: Three Months Ended March 31, 2018 2017 Bailment fees $ 6,093 $ 4,703 Interchange fees 3,460 3,198 Other card and ATM fees 252 230 Total credit/debit card and ATM income $ 9,805 $ 8,131
Schedule of Investment Management and Fiduciary Income	The following table presents the components of investment management and fiduciary income: Three Months Ended March 31, 2018 2017 Trust fees $ 5,248 $ 4,296 Wealth management and advisory fees 3,941 3,743 Total investment management and fiduciary income $ 9,189 $ 8,039
Schedule of Deposit Service Charges	The following table presents the components of deposit service charges: Three Months Ended March 31, 2018 2017 Service fees $ 2,580 $ 2,396 Return and overdraft fees 1,884 1,845 Other deposit service fees 166 156 Total deposit service charges $ 4,630 $ 4,397
Schedule of Other Income	The following table presents the components of other income: Three Months Ended March 31, 2018 2017 Managed service fees 2,826 2,619 Currency preparation 725 683 ATM insurance 590 697 Miscellaneous products and services 1,767 1,197 Total other income $ 5,908 $ 5,196

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table shows the computation of basic and diluted earnings per share: Three Months Ended March 31, (Dollars and shares in thousands, except per share data) 2018 2017 Numerator: Net income $ 37,350 $ 18,937 Denominator: Weighted average basic shares 31,426 31,407 Dilutive potential common shares 834 942 Weighted average fully diluted shares 32,260 32,349 Earnings per share: Basic $ 1.19 $ 0.60 Diluted $ 1.16 $ 0.59 Outstanding common stock equivalents having no dilutive effect 88 22

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Estimated Fair Value of Available-for-Sale and Held-to-Maturity Investment Securities	The following tables detail the amortized cost and the estimated fair value of our investments in available-for-sale and held-to-maturity debt securities as well as our equity investments. None of our investments in debt securities are classified as trading. March 31, 2018 (Dollars in thousands) Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value Available-for-Sale Debt Securities (1) CMO $ 277,079 $ 5 $ 7,848 $ 269,236 FNMA MBS 523,676 71 14,747 509,000 FHLMC MBS 99,860 3 2,564 97,299 GNMA MBS 33,063 149 929 32,283 $ 933,678 $ 228 $ 26,088 $ 907,818 Held-to-Maturity Debt Securities State and political subdivisions $ 159,672 $ 310 $ 818 $ 159,164 Equity Investments (2) Visa Class B shares $ 14,100 $ 15,346 $ — $ 29,446 Other equity investments 3,947 — 30 3,917 $ 18,047 $ 15,346 $ 30 $ 33,363 (1) Held-to–maturity securities transferred from available-for-sale are included in held-to-maturity at fair value at the time of transfer. The amortized cost of held-to-maturity securities included net unrealized gains of $1.5 million at March 31, 2018 related to securities transferred, which are offset in Accumulated other comprehensive loss, net of tax. (2) Equity investments are included in Other investments in the unaudited Consolidated Statements of Financial Condition. December 31, 2017 (Dollars in thousands) Amortized Cost Gross Gross Fair Available-for-Sale Debt Securities (1) CMO $ 250,592 $ 88 $ 4,141 $ 246,539 FNMA MBS 479,218 941 6,172 473,987 FHLMC MBS 88,681 118 924 87,875 GNMA MBS 29,300 209 411 29,098 $ 847,791 $ 1,356 $ 11,648 $ 837,499 Held-to-Maturity Debt Securities State and political subdivisions $ 161,186 $ 1,758 $ 91 $ 162,853 Equity Investments (2) Visa Class B shares $ 14,048 $ — $ — $ 14,048 Other equity investments 3,943 — 20 3,923 $ 17,991 $ — $ 20 $ 17,971 (1) Held-to–maturity securities transferred from available-for-sale are included in held-to-maturity at fair value at the time of transfer. The amortized cost of held-to-maturity securities included net unrealized gains of $1.6 million at December 31, 2017 related to securities transferred, which are offset in Accumulated other comprehensive loss, net of tax. (2) Equity investments are included in Other investments in the unaudited Consolidated Statements of Financial Condition.
Schedule of Maturities of Investment Securities Available-for-Sale and Held-to-Maturity	The scheduled maturities of our available-for-sale debt securities at March 31, 2018 and December 31, 2017 are presented in the table below: Available for Sale Amortized Fair (Dollars in thousands) Cost Value March 31, 2018 Within one year $ — $ — After one year but within five years 19,963 19,389 After five years but within ten years 180,927 173,171 After ten years 732,788 715,258 $ 933,678 $ 907,818 December 31, 2017 Within one year $ — $ — After one year but within five years 20,051 19,825 After five years but within ten years 179,812 175,583 After ten years 647,928 642,091 $ 847,791 $ 837,499 The scheduled maturities of our held-to-maturity debt securities at March 31, 2018 and December 31, 2017 are presented in the table below: Held to Maturity Amortized Fair (Dollars in thousands) Cost Value March 31, 2018 Within one year $ 160 $ 160 After one year but within five years 6,867 6,850 After five years but within ten years 20,042 19,930 After ten years 132,603 132,224 $ 159,672 $ 159,164 December 31, 2017 Within one year $ 322 $ 320 After one year but within five years 5,895 5,894 After five years but within ten years 18,751 18,873 After ten years 136,218 137,766 $ 161,186 $ 162,853
Schedule of Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category	For debt securities with unrealized losses, the table below shows our gross unrealized losses and fair value by investment category and length of time that individual debt securities were in a continuous unrealized loss position at March 31, 2018 . Duration of Unrealized Loss Position Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Loss Value Loss Value Loss Available-for-sale debt securities: CMO $ 186,243 $ 4,292 $ 77,903 $ 3,556 $ 264,146 $ 7,848 FNMA MBS 339,535 7,581 122,243 7,166 461,778 14,747 FHLMC MBS 76,822 1,463 20,401 1,101 97,223 2,564 GNMA MBS 10,537 265 14,127 664 24,664 929 Total temporarily impaired investments $ 613,137 $ 13,601 $ 234,674 $ 12,487 $ 847,811 $ 26,088 Held-to-maturity debt securities: State and political subdivisions $ 92,114 $ 708 $ 5,372 $ 110 $ 97,486 $ 818 Total temporarily impaired investments $ 92,114 $ 708 $ 5,372 $ 110 $ 97,486 $ 818 Other investments $ — $ — $ 617 $ 30 $ 617 $ 30 For investment securities with unrealized losses, the table below shows our gross unrealized losses and fair value by investment category and length of time that individual securities were in a continuous unrealized loss position at December 31, 2017 . Duration of Unrealized Loss Position Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Loss Value Loss Value Loss Available-for-sale debt securities: CMO $ 146,726 $ 1,820 $ 77,149 $ 2,321 $ 223,875 $ 4,141 FNMA MBS 204,921 1,479 126,342 4,693 331,263 6,172 FHLMC MBS 42,514 269 21,405 655 63,919 924 GNMA MBS 4,615 56 14,782 355 19,397 411 Total temporarily impaired investments $ 398,776 $ 3,624 $ 239,678 $ 8,024 $ 638,454 $ 11,648 Held-to-maturity debt securities: State and political subdivisions $ 23,404 $ 59 $ 5,625 $ 32 $ 29,029 $ 91 Total temporarily impaired investments $ 23,404 $ 59 $ 5,625 $ 32 $ 29,029 $ 91 Other investments $ — $ — $ 624 $ 20 $ 624 $ 20

LOANS (Tables)

LOANS (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Summary of Loan Portfolio by Category	The following table shows our loan portfolio by category: (Dollars in thousands) March 31, 2018 December 31, 2017 Commercial and industrial $ 1,489,563 $ 1,464,554 Owner-occupied commercial 1,080,662 1,079,247 Commercial mortgages 1,164,424 1,187,705 Construction 289,943 281,608 Residential (1) 247,083 253,301 Consumer 582,722 558,493 4,854,397 4,824,908 Less: Deferred fees, net 7,829 7,991 Allowance for loan losses 40,810 40,599 Net loans $ 4,805,758 $ 4,776,318 (1) Includes reverse mortgages, at fair value of $20.0 million at March 31, 2018 and $19.8 million at December 31, 2017 .
Schedule of Outstanding Principal Balance and Carrying Amounts for Acquired Credit-Impaired Loans	The following table shows the outstanding principal balance and carrying amounts for acquired credit impaired loans for which the Company applies ASC 310-30 as of the dates indicated: (Dollars in thousands) March 31, 2018 December 31, 2017 Outstanding principal balance $ 24,838 $ 27,034 Carrying amount 19,828 21,295 Allowance for loan losses 326 358
Summary of Changes in Accretable Yield on Acquired Credit Impaired Loans	The following table presents the changes in accretable yield on the acquired credit impaired loans for the three months ended March 31, 2018 : (Dollars in thousands) Three months ended March 31, 2018 Balance at beginning of period $ 3,035 Accretion (417 ) Reclassification from nonaccretable difference 2 Additions/adjustments (180 ) Disposals — Balance at end of period $ 2,440

ALLOWANCE FOR LOAN LOSSES AND32

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Schedule of Allowance for Loan Losses and Loan Balances	The following tables provide the activity of our allowance for loan losses and loan balances for the three months ended March 31, 2018 : (Dollars in thousands) Commercial Owner-occupied Commercial Commercial Mortgages Construction Residential (1) Consumer Total Allowance for loan losses Beginning balance $ 16,732 $ 5,422 $ 5,891 $ 2,861 $ 1,798 $ 7,895 $ 40,599 Charge-offs (3,360 ) (10 ) (48 ) — — (462 ) (3,880 ) Recoveries 80 5 134 1 14 207 441 Provision (credit) 2,650 (58 ) 617 27 (129 ) 548 3,655 Provision for acquired loans — — 23 (25 ) (3 ) — (5 ) Ending balance $ 16,102 $ 5,359 $ 6,617 $ 2,864 $ 1,680 $ 8,188 $ 40,810 Loans individually evaluated for impairment $ 2,632 $ — $ — $ — $ 643 $ 186 $ 3,461 Loans collectively evaluated for impairment 13,296 5,347 6,528 2,857 1,001 7,994 37,023 Acquired loans evaluated for impairment 174 12 89 7 35 9 326 Ending balance $ 16,102 $ 5,359 $ 6,617 $ 2,864 $ 1,679 $ 8,189 $ 40,810 Loans individually evaluated for impairment (2) $ 16,993 $ 4,342 $ 5,946 $ 6,490 $ 12,861 $ 7,677 $ 54,309 Loans collectively evaluated for impairment 1,361,517 938,166 970,750 267,293 145,753 541,644 4,225,123 Acquired nonimpaired loans 107,183 133,007 178,518 15,259 67,722 33,152 534,841 Acquired impaired loans 3,870 5,147 9,210 901 777 249 20,154 Ending balance (3) $ 1,489,563 $ 1,080,662 $ 1,164,424 $ 289,943 $ 227,113 $ 582,722 $ 4,834,427 (1) Period-end loan balance excludes reverse mortgages, at fair value of $20.0 million . (2) The difference between this amount and nonaccruing loans represents accruing troubled debt restructured loans of $20.2 million for the period ending March 31, 2018 . Accruing troubled debt restructured loans are considered impaired loans. (3) Ending loan balances do not include net deferred fees. The following table provides the activity of the allowance for loan losses and loan balances for the three months ended March 31, 2017 : (Dollars in thousands) Commercial Owner - occupied Commercial Commercial Mortgages Construction Residential (1) Consumer Total Allowance for loan losses Beginning balance $ 13,339 $ 6,588 $ 8,915 $ 2,838 $ 2,059 $ 6,012 $ 39,751 Charge-offs (1,255 ) (192 ) (104 ) (14 ) (11 ) (1,143 ) (2,719 ) Recoveries 84 75 46 2 120 305 632 Provision (credit) 1,949 (441 ) (518 ) 158 (114 ) 1,080 2,114 Provision for acquired loans 88 — (4 ) (23 ) — (13 ) 48 Ending balance $ 14,205 $ 6,030 $ 8,335 $ 2,961 $ 2,054 $ 6,241 $ 39,826 Loans individually evaluated for impairment $ 1,860 $ — $ 1,395 $ 500 $ 887 $ 194 $ 4,836 Loans collectively evaluated for impairment 12,165 6,015 6,763 2,397 1,144 6,042 34,526 Acquired loans evaluated for impairment 180 15 177 64 23 5 464 Ending balance $ 14,205 $ 6,030 $ 8,335 $ 2,961 $ 2,054 $ 6,241 $ 39,826 Loans individually evaluated for impairment (2) $ 16,767 $ 4,020 $ 9,771 $ 3,130 $ 14,280 $ 9,029 $ 56,997 Loans collectively evaluated for impairment 1,175,911 919,508 928,925 225,718 158,430 405,285 3,813,777 Acquired nonimpaired loans 141,933 156,724 216,410 24,540 85,679 50,321 675,607 Acquired impaired loans 5,256 12,040 10,450 2,372 866 263 31,247 Ending balance (3) $ 1,339,867 $ 1,092,292 $ 1,165,556 $ 255,760 $ 259,255 $ 464,898 $ 4,577,628 (1) Period-end loan balance excludes reverse mortgages, at fair value of $22.5 million . (2) The difference between this amount and nonaccruing loans represents accruing troubled debt restructured loans of $17.3 million for the period ending March 31, 2017 . Accruing troubled debt restructured loans are considered impaired loans. (3) Ending loan balances do not include net deferred fees.
Summary of Nonaccrual and Past Due Loans	The following tables show our nonaccrual and past due loans at the dates indicated: March 31, 2018 (Dollars in thousands) 30–59 Days Past Due and Still Accruing 60–89 Days Past Due and Still Accruing Greater Than 90 Days Past Due and Still Accruing Total Past Due And Still Accruing Accruing Current Balances Acquired Impaired Loans Nonaccrual Loans Total Loans Commercial $ 403 $ 708 $ 31 $ 1,142 $ 1,467,695 $ 3,870 $ 16,856 $ 1,489,563 Owner-occupied commercial 1,529 — — 1,529 1,069,644 5,147 4,342 1,080,662 Commercial mortgages 616 34 46 696 1,149,408 9,210 5,110 1,164,424 Construction 2,024 — — 2,024 285,580 901 1,438 289,943 Residential (1) 2,446 211 155 2,812 219,366 777 4,158 227,113 Consumer 532 179 323 1,034 579,283 249 2,156 582,722 Total (2) $ 7,550 $ 1,132 $ 555 $ 9,237 $ 4,770,976 $ 20,154 $ 34,060 $ 4,834,427 % of Total Loans 0.16 % 0.02 % 0.01 % 0.19 % 98.69 % 0.42 % 0.70 % 100 % (1) Residential accruing current balances excludes reverse mortgages at fair value of $20.0 million . (2) The balances above include a total of $534.8 million of acquired non-impaired loans. December 31, 2017 (Dollars in thousands) 30–59 Days Past Due and Still Accruing 60–89 Days Past Due and Still Accruing Greater Than 90 Days Past Due and Still Accruing Total Past Due And Still Accruing Accruing Current Balances Acquired Impaired Loans Nonaccrual Loans Total Loans Commercial $ 1,050 $ — $ — $ 1,050 $ 1,440,291 $ 4,156 $ 19,057 $ 1,464,554 Owner-occupied commercial 2,069 233 — 2,302 1,067,488 5,803 3,654 1,079,247 Commercial mortgages 320 90 — 410 1,171,701 9,724 5,870 1,187,705 Construction — — — — 278,864 940 1,804 281,608 Residential (1) 2,058 731 356 3,145 225,434 784 4,124 233,487 Consumer 1,117 463 105 1,685 554,634 247 1,927 558,493 Total (2) $ 6,614 $ 1,517 $ 461 $ 8,592 $ 4,738,412 $ 21,654 $ 36,436 $ 4,805,094 % of Total Loans 0.14 % 0.03 % 0.01 % 0.18 % 98.61 % 0.45 % 0.76 % 100 % (1) Residential accruing current balances excludes reverse mortgages, at fair value of $19.8 million . (2) The balances above include a total of $565.5 million of acquired non-impaired loans
Analysis of Impaired Loans	The following tables provide an analysis of our impaired loans at March 31, 2018 and December 31, 2017 : March 31, 2018 (Dollars in thousands) Ending Loan Balances Loans with No Related Reserve (1) Loans with Related Reserve Related Reserve Contractual Principal Balances Average Loan Balances Commercial $ 18,592 $ 3,038 $ 15,554 $ 2,806 $ 24,842 $ 17,941 Owner-occupied commercial 6,032 4,342 1,690 12 6,360 6,103 Commercial mortgages 7,427 5,946 1,481 89 16,370 11,103 Construction 6,718 6,490 228 7 7,239 5,134 Residential 13,261 8,195 5,066 679 15,992 14,334 Consumer 7,911 6,480 1,431 194 8,953 8,136 Total (2) $ 59,941 $ 34,491 $ 25,450 $ 3,787 $ 79,756 $ 62,751 (1) Reflects loan balances at or written down to their remaining book balance. (2) The above includes acquired impaired loans totaling $5.6 million in the ending loan balance and $6.6 million in the contractual principal balance. December 31, 2017 (Dollars in thousands) Ending Loan Balances Loans with No Related (1) Loans with Related Reserve Related Reserve Contractual Principal Balances Average Loan Balances Commercial $ 20,842 $ 3,422 $ 17,420 $ 3,861 $ 23,815 $ 15,072 Owner-occupied commercial 5,374 3,654 1,720 12 5,717 5,827 Commercial mortgages 7,598 4,487 3,111 112 16,658 12,630 Construction 6,292 6,023 269 33 6,800 4,523 Residential 14,181 8,282 5,899 796 17,015 14,533 Consumer 7,819 6,304 1,515 203 8,977 8,158 Total (2) $ 62,106 $ 32,172 $ 29,934 $ 5,017 $ 78,982 $ 60,743 (1) Reflects loan balances at or written down to their remaining book balance. (2) The above includes acquired impaired loans totaling $5.8 million in the ending loan balance and $6.8 million in the contractual principal balance.
Schedule of Commercial Credit Exposure	The following tables provide an analysis of loans by portfolio segment based on the credit quality indicators used to determine the Allowance for Loan Loss. Commercial Credit Exposure March 31, 2018 (Dollars in thousands) Commercial Owner-occupied Commercial Commercial Mortgages Construction Total Commercial (1) Amount % Risk Rating: Special mention $ 24,871 $ 15,874 $ 4,346 $ — $ 45,091 Substandard: Accrual 33,960 18,055 2,399 5,796 60,210 Nonaccrual 14,224 4,342 5,110 1,438 25,114 Doubtful 2,632 — — — 2,632 Total Special Mention and Substandard 75,687 38,271 11,855 7,234 133,047 3 % Acquired impaired 3,870 5,147 9,210 901 19,128 1 % Pass 1,410,006 1,037,244 1,143,359 281,808 3,872,417 96 % Total $ 1,489,563 $ 1,080,662 $ 1,164,424 $ 289,943 $ 4,024,592 100 % (1) Table includes $434.0 million of acquired non-impaired loans as of March 31, 2018 . December 31, 2017 (Dollars in thousands) Commercial Owner-occupied Commercial Commercial Mortgages Construction Total Commercial (1) Amount % Risk Rating: Special mention $ 22,789 $ 16,783 $ — $ — $ 39,572 Substandard: Accrual 34,332 19,386 1,967 4,965 60,650 Nonaccrual 15,370 3,654 5,852 1,804 26,680 Doubtful 3,687 — 18 — 3,705 Total Special Mention and Substandard 76,178 39,823 7,837 6,769 130,607 3 % Acquired impaired 4,156 5,803 9,724 940 20,623 1 % Pass 1,384,220 1,033,621 1,170,144 273,899 3,861,884 96 % Total $ 1,464,554 $ 1,079,247 $ 1,187,705 $ 281,608 $ 4,013,114 100 % (1) Table includes $457.3 million of acquired non-impaired loans as of December 31, 2017 .
Schedule of Consumer Credit Exposure	Residential and Consumer Credit Exposure (Dollars in thousands) Residential (2) Consumer Total Residential and Consumer (3) March 31, December 31, March 31, December 31, March 31, 2018 December 31, 2017 2018 2017 2018 2017 Amount Percent Amount Percent Nonperforming (1) $ 12,861 $ 13,778 $ 7,677 $ 7,588 $ 20,538 3 % $ 21,366 3 % Acquired impaired loans 777 784 249 247 1,026 — % 1,031 — % Performing 213,475 218,925 574,796 550,658 788,271 97 % 769,583 97 % Total $ 227,113 $ 233,487 $ 582,722 $ 558,493 $ 809,835 100 % $ 791,980 100 % (1) Includes $14.2 million as of March 31, 2018 and $15.3 million as of December 31, 2017 of troubled debt restructured mortgages and home equity installment loans that are performing in accordance with the loans’ modified terms and are accruing interest. (2) Residential performing loans excludes $20.0 million and $19.8 million of reverse mortgages at fair value as of March 31, 2018 and December 31, 2017 , respectively. (3) Total includes $100.9 million and $108.2 million in acquired non-impaired loans as of March 31, 2018 and December 31, 2017 , respectively.
Schedule of Loans Identified as Troubled Debt Restructurings During Periods Indicated	The following table presents the balance of TDRs as of the indicated dates: (Dollars in thousands) March 31, 2018 December 31, 2017 Performing TDRs $ 20,248 $ 20,061 Nonperforming TDRs 9,907 9,627 Total TDRs $ 30,155 $ 29,688 The following table presents information regarding the types of loan modifications made for the three months ended March 31, 2018 and 2017: March 31, 2018 March 31, 2017 Contractual payment reduction and term extension Maturity Date Extension Discharged in bankruptcy Other (1) Total Contractual payment reduction and term extension Maturity Date Extension Discharged in bankruptcy Other (1) Total Commercial — — — — — — 1 — — 1 Owner-occupied commercial — — — — — — 1 — — 1 Commercial Mortgages — 1 — — 1 — — — — — Construction — 1 — — 1 — 2 — — 2 Residential — — — — — — — 1 — 1 Consumer 1 1 — 2 4 — — 6 1 7 Total 1 3 — 2 6 — 4 7 1 12 (1) Other includes underwriting exceptions. The following table presents loans identified as TDRs during the three months ended March 31, 2018 and 2017 . Three Months Ended March 31, 2018 2017 (Dollars in thousands) Pre Modification Post Modification Pre Modification Post Modification Commercial $ — $ — $ 443 $ 443 Owner-occupied commercial — — 3,071 3,071 Commercial mortgages 458 458 — — Construction 920 920 1,712 1,712 Residential — — 242 242 Consumer 262 262 584 584 Total $ 1,640 $ 1,640 $ 6,052 $ 6,052

DEPOSITS (Tables)

DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Deposits By Category	The following table shows our deposits by category: (Dollars in thousands) March 31, 2018 December 31, 2017 Noninterest-bearing: Noninterest demand (1) $ 1,372,271 $ 1,420,760 Total noninterest-bearing $ 1,372,271 $ 1,420,760 Interest-bearing: Interest-bearing demand $ 991,020 $ 1,071,512 Savings 561,432 549,744 Money market 1,382,178 1,347,146 Total core deposits (1) 2,934,630 2,968,402 Customer time deposits (1) 642,116 629,071 Brokered deposits 253,498 229,371 Total interest-bearing 3,830,244 3,826,844 Total deposits $ 5,202,515 $ 5,247,604 (1) Noninterest demand, total core deposits and customer time deposits represent the Company's total customer deposits.

ASSOCIATE BENEFIT PLANS (Tables

ASSOCIATE BENEFIT PLANS (Tables)	3 Months Ended
	Mar. 31, 2018
Postemployment Benefits [Abstract]
Schedule of Net Periodic Benefit Cost Components of Postretirement Benefits	The following are disclosures of the net periodic benefit cost components of postretirement medical benefits measured at January 1, 2018 and 2017. Three months ended March 31, (Dollars in thousands) 2018 2017 Service cost $ 15 $ 15 Interest cost 17 19 Prior service cost amortization (19 ) (19 ) Net gain recognition (11 ) (16 ) Net periodic benefit cost $ 2 $ (1 ) The following table shows the net periodic benefit cost components for the Alliance Associate Pension Plan benefits measured at January 1, 2018. (Dollars in thousands) Three months ended March 31, 2018 2017 Service cost $ 10 $ 10 Interest cost 73 75 Expected return on plan assets (135 ) (135 ) Prior service cost amortization — — Net gain recognition — — Net periodic benefit cost $ (52 ) $ (50 )

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Assumptions for Options Issued	The following table summarizes the assumptions we used to value options awarded during the three months ended March 31, 2018 : March 31, 2018 Expected term (in years) 5.3 Volatility 23.0 % Weighted-average risk-free interest rate 2.69 % Dividend yield 0.74 %

FAIR VALUE DISCLOSURES OF FIN36

FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Financial Instruments Carried at Fair Value	The following tables present financial instruments carried at fair value as of March 31, 2018 and December 31, 2017 by level in the valuation hierarchy (as described above): March 31, 2018 (Dollars in thousands) Quoted Prices in Active Markets for Identical Asset (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Fair Value Assets measured at fair value on a recurring basis: Available-for-sale securities: CMO $ — $ 269,236 $ — $ 269,236 FNMA MBS — 509,000 — 509,000 FHLMC MBS — 97,299 — 97,299 GNMA MBS — 32,283 — 32,283 Other investments 617 — — 617 Other assets — 1,168 — 1,168 Total assets measured at fair value on a recurring basis $ 617 $ 908,986 $ — $ 909,603 Liabilities measured at fair value on a recurring basis: Other liabilities $ — $ 4,335 $ — $ 4,335 Assets measured at fair value on a nonrecurring basis: Other investments $ — $ — $ 32,746 $ 32,746 Other real estate owned — — 2,567 2,567 Loans held for sale — 15,937 — 15,937 Impaired loans, net — — 56,154 56,154 Total assets measured at fair value on a nonrecurring basis $ — $ 15,937 $ 91,467 $ 107,404 December 31, 2017 (Dollars in thousands) Quoted Prices in Active Markets for Identical Asset (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Fair Value Assets measured at fair value on a recurring basis: Available-for-sale securities: CMO $ — $ 246,539 $ — $ 246,539 FNMA MBS — 473,987 — 473,987 FHLMC MBS — 87,875 — 87,875 GNMA MBS — 29,098 — 29,098 GSE — — — — Other investments 623 — — 623 Other assets — 747 — 747 Total assets measured at fair value on a recurring basis $ 623 $ 838,246 $ — $ 838,869 Liabilities measured at fair value on a recurring basis: Other liabilities $ — $ 3,225 $ — $ 3,225 Assets measured at fair value on a nonrecurring basis Other investments $ — $ — $ 17,348 $ 17,348 Other real estate owned — — 2,503 2,503 Loans held for sale — 31,055 — 31,055 Impaired loans, net — — 57,089 57,089 Total assets measured at fair value on a nonrecurring basis $ — $ 31,055 $ 76,940 $ 107,995
Book Value and Estimated Fair Value of Financial Instruments	The book value and estimated fair value of our financial instruments are as follows: (Dollars in thousands) March 31, 2018 December 31, 2017 Fair Value Measurement Book Value Fair Value Book Value Fair Value Financial assets: Cash and cash equivalents Level 1 $ 711,089 $ 711,089 $ 723,866 $ 723,866 Investment securities available for sale See previous table 907,818 907,818 837,499 837,499 Investment securities held to maturity Level 2 159,672 159,164 161,186 162,853 Other investments Level 1,3 33,363 33,363 17,971 48,050 Loans, held for sale Level 2 15,937 15,937 31,055 31,055 Loans, net (1)(2) Level 2,3 4,749,604 4,732,340 4,719,229 4,699,458 Impaired loans, net Level 3 56,154 56,154 57,089 57,089 Stock in FHLB of Pittsburgh Level 2 28,854 28,854 31,284 31,284 Accrued interest receivable Level 2 19,969 19,969 19,405 19,405 Other assets Level 3 1,606 1,606 790 790 Financial liabilities: Deposits Level 2 5,202,515 4,768,066 5,247,604 4,848,588 Borrowed funds Level 2 932,197 925,902 937,806 937,605 Standby letters of credit Level 3 562 562 603 603 Accrued interest payable Level 2 3,450 3,450 1,037 1,037 Other liabilities Level 2 4,335 4,335 3,188 3,188 (1) Excludes impaired loans, net. (2) Includes reverse mortgage loans, which are categorized as Level 3.

DERIVATIVE FINANCIAL INSTRUME37

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Values of Derivative Instruments	The table below presents the fair value of our derivative financial instruments as well as their location on the Consolidated Statements of Financial Condition as of March 31, 2018 . Fair Values of Derivative Instruments (Dollars in thousands) Count Notional Balance Sheet Location Liability Derivatives (Fair Value) Derivatives designated as hedging instruments: Interest rate products 3 $ 75,000 Other Liabilities $ (4,198 ) Total $ 75,000 $ (4,198 ) Derivatives not designated as hedging instruments: Interest rate lock commitment with customers 62,920 Other Assets $ 929 Interest rate lock commitment with customers 9,558 Other Liabilities (42 ) Forward sale commitments 32,895 Other Assets 238 Forward sale commitments 36,014 Other Liabilities (108 ) Total $ 141,387 $ 1,017 Total derivatives $ 216,387 $ (3,181 )
Summary of Company's Derivative Financial Instruments	The table below presents the effect of the derivative financial instruments on the Consolidated Statements of Income for the three months ended March 31, 2018 and March 31, 2017 . (Dollars in thousands) Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion) Location of Gain or (Loss)Reclassified from Accumulated OCI into Income (Effective Portion) Three months ended March 31, Derivatives in Cash Flow Hedging Relationships 2018 2017 Interest Rate Products $ (764 ) $ (3,039 ) Interest income Total $ (764 ) $ (3,039 ) Amount of Gain or (Loss) Recognized in Income Location of Gain or (Loss) Recognized in Income (Dollars in thousands) Three months ended March 31, Derivatives Not Designated as a Hedging Instrument 2018 2017 Interest Rate Lock Commitments $ 1,100 $ — Mortgage banking activity, net Forward Sale Commitments (83 ) $ — Mortgage banking activity, net Total $ 1,017 $ —

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Details of Segment Information	The following table shows segment results for the three months ended March 31, 2018 and 2017 : Three months ended March 31, 2018 Three months ended March 31, 2017 (Dollars in thousands) WSFS Bank Cash ® Wealth Management Total WSFS Bank Cash ® Wealth Total Statements of Income External customer revenues: Interest income $ 65,290 $ — $ 2,323 $ 67,613 $ 58,688 $ — $ 2,138 $ 60,826 Noninterest income 26,606 11,353 9,508 47,467 10,167 9,677 8,248 28,092 Total external customer revenues 91,896 11,353 11,831 115,080 68,855 9,677 10,386 88,918 Inter-segment revenues: Interest income 2,968 — 2,363 5,331 1,996 — 2,065 4,061 Noninterest income 2,108 181 34 2,323 2,164 191 36 2,391 Total inter-segment revenues 5,076 181 2,397 7,654 4,160 191 2,101 6,452 Total revenue 96,972 11,534 14,228 122,734 73,015 9,868 12,487 95,370 External customer expenses: Interest expense 9,503 — 396 9,899 7,463 — 260 7,723 Noninterest expenses 39,435 7,319 6,658 53,412 38,960 6,135 6,411 51,506 Provision for loan losses 3,661 — (11 ) 3,650 1,716 — 446 2,162 Total external customer expenses 52,599 7,319 7,043 66,961 48,139 6,135 7,117 61,391 Inter-segment expenses: Interest expense 2,363 2,059 909 5,331 2,065 1,405 591 4,061 Noninterest expenses 215 672 1,436 2,323 227 715 1,449 2,391 Total inter-segment expenses 2,578 2,731 2,345 7,654 2,292 2,120 2,040 6,452 Total expenses 55,177 10,050 9,388 74,615 50,431 8,255 9,157 67,843 Income before taxes $ 41,795 $ 1,484 $ 4,840 $ 48,119 $ 22,584 $ 1,613 $ 3,330 $ 27,527 Income tax provision 10,769 8,590 Consolidated net income $ 37,350 $ 18,937 The following table shows significant components of segment net assets as of March 31, 2018 and December 31, 2017 : March 31, 2018 December 31, 2017 (Dollars in thousands) WSFS Bank Cash ® Wealth Total WSFS Bank Cash ® Wealth Management Total Statements of Financial Condition Cash and cash equivalents $ 112,124 $ 588,862 $ 10,103 $ 711,089 $ 104,530 $ 611,385 $ 7,951 $ 723,866 Goodwill 145,808 — 20,199 166,007 145,808 — 20,199 166,007 Other segment assets 5,880,317 6,717 223,801 6,110,835 5,882,910 6,078 220,679 6,109,667 Total segment assets $ 6,138,249 $ 595,579 $ 254,103 $ 6,987,931 $ 6,133,248 $ 617,463 $ 248,829 $ 6,999,540 Capital expenditures $ 2,070 $ 32 $ 122 $ 2,224 $ 8,197 $ 184 $ 613 $ 8,994

CHANGE IN ACCUMULATED OTHER C39

CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Components of Accumulated Other Comprehensive (Loss) Income	Changes to accumulated other comprehensive loss by component are shown net of taxes in the following tables for the period indicated: (Dollars in thousands) Net change in investment securities available for sale Net change in securities held to maturity Net change in defined benefit plan Net change in fair value of derivative used for cash flow hedge Total Balance, December 31, 2017 $ (7,842 ) $ 1,223 $ 865 $ (2,398 ) $ (8,152 ) Other comprehensive (loss) income before reclassifications (11,827 ) — — (765 ) (12,592 ) Less: Amounts reclassified from accumulated other comprehensive (loss) income (16 ) (119 ) 59 — (76 ) Net current-period other comprehensive (loss) income (11,843 ) (119 ) 59 (765 ) (12,668 ) Balance, March 31, 2018 $ (19,685 ) $ 1,104 $ 924 $ (3,163 ) $ (20,820 ) Balance, December 31, 2016 $ (8,194 ) $ 1,392 $ 957 $ (1,772 ) $ (7,617 ) Other comprehensive income (loss) before reclassifications 1,272 — — (112 ) 1,160 Less: Amounts reclassified from accumulated other comprehensive (loss) income (206 ) (101 ) (23 ) — (330 ) Net current-period other comprehensive income (loss) 1,066 (101 ) (23 ) (112 ) 830 Balance, March 31, 2017 $ (7,128 ) $ 1,291 $ 934 $ (1,884 ) $ (6,787 )
Components of Other Comprehensive Income (Loss)	The Consolidated Statements of Income were impacted by components of other comprehensive income (loss) as shown in the table below: (Dollars in thousands) Three Months Ended March 31, Affected line item in Consolidated Statements of Income 2018 2017 Securities available for sale: Realized gains on securities transactions $ (21 ) $ (320 ) Security gains, net Income taxes 5 114 Income tax provision Net of tax $ (16 ) $ (206 ) Net unrealized holding gains on securities transferred between available-for-sale and held-to-maturity: Amortization of net unrealized gains to income during the period $ (156 ) $ (160 ) Interest income on investment securities Income taxes 37 59 Income tax provision Net of tax $ (119 ) $ (101 ) Amortization of Defined Benefit Pension items: Prior service costs (credits) (1) $ 59 $ (19 ) Transition obligation — — Actuarial gains (11 ) (16 ) Total before tax $ 48 $ (35 ) Salaries, benefits and other compensation Income taxes 11 12 Income tax provision Net of tax 59 (23 ) Total reclassifications $ (76 ) $ (330 ) (1) The March 31, 2018 prior service costs balance includes a tax true-up adjustment of $0.1 million . Note that the tax true-up was made to the deferred tax asset with an offset to AOCI and does not affect the actual net periodic benefit costs of the pension plan.

BASIS OF PRESENTATION (Detail)

BASIS OF PRESENTATION (Detail)	Sep. 01, 2017USD ($)	Mar. 31, 2018SubsidiaryOffice	Dec. 31, 2012USD ($)
Basis Of Presentation [Line Items]
Number of unconsolidated affiliate		1
Number of banking offices		77
Write-off of unamortized debt issuance costs | $	$ 700,000
Delaware
Basis Of Presentation [Line Items]
Number of banking offices		46
Pennsylvania
Basis Of Presentation [Line Items]
Number of banking offices		29
Virginia
Basis Of Presentation [Line Items]
Number of banking offices		1
Nevada
Basis Of Presentation [Line Items]
Number of banking offices		1
WSFS Financial Corporation
Basis Of Presentation [Line Items]
Number of wholly-owned subsidiaries | Subsidiary		3
Senior notes due 2019
Basis Of Presentation [Line Items]
Senior unsecured fixed-to-floating rate notes, issued amount | $			$ 55,000,000
Interest rate on unsecured debt			6.25%

NONINTEREST INCOME - Credit_deb

NONINTEREST INCOME - Credit/debit card and ATM Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue from Contract with Customer [Abstract]
Bailment fees	$ 6,093	$ 4,703
Interchange fees	3,460	3,198
Other card and ATM fees	252	230
Total credit/debit card and ATM income	$ 9,805	$ 8,131

NONINTEREST INCOME - Investment

NONINTEREST INCOME - Investment Management and Fiduciary Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue from Contract with Customer [Abstract]
Trust Fees	$ 5,248	$ 4,296
Wealth Management and Advisory Fees	3,941	3,743
Total Investment Management and Fiduciary Income	$ 9,189	$ 8,039

NONINTEREST INCOME - Deposit se

NONINTEREST INCOME - Deposit service charges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue from Contract with Customer [Abstract]
Service fees	$ 2,580	$ 2,396
Return and overdraft fees	1,884	1,845
Other deposit service fees	166	156
Total deposit service charges	$ 4,630	$ 4,397

NONINTEREST INCOME - Other inco

NONINTEREST INCOME - Other income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue from External Customer [Line Items]
Other income	$ 5,908	$ 5,196
Managed service fees
Revenue from External Customer [Line Items]
Other income	2,826	2,619
Currency preparation
Revenue from External Customer [Line Items]
Other income	725	683
ATM insurance
Revenue from External Customer [Line Items]
Other income	590	697
Miscellaneous products and services
Revenue from External Customer [Line Items]
Other income	$ 1,767	$ 1,197

EARNINGS PER SHARE (Detail)

EARNINGS PER SHARE (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net Income	$ 37,350	$ 18,937
Denominator:
Weighted average basic shares (in shares)	31,426	31,407
Dilutive potential common shares (in shares)	834	942
Weighted average fully diluted shares (in shares)	32,260	32,349
Earnings per share:
Basic (in dollars per share)	$ 1.19	$ 0.60
Diluted (in dollars per share)	$ 1.16	$ 0.59
Outstanding common stock equivalents having no dilutive effect (in shares)	88	22

INVESTMENT SECURITIES - Additio

INVESTMENT SECURITIES - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2018USD ($)secuirty	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Schedule of Available-for-sale Securities [Line Items]
Trading securities	$ 0
Available-for-sale securities, amortized cost basis	933,678,000		$ 847,791,000
Securities pledged as collateral	619,000,000		688,200,000
Proceeds from sale of investment securities	7,000,000	$ 263,000,000
Gains from sale of Available-for-sale securities	100,000	$ 300,000
Losses from sale of Available-for-sale securities (less than during the current quarter end)	0
Unamortized premiums	13,900,000		14,100,000
Unaccreted discounts	1,300,000		1,300,000
Owned investment securities	945,300,000
Total unrealized losses on securities	$ 26,900,000
Number of securities, below investment grade | secuirty	1
Available-for-sale securities, below investment grade, fair value	$ 800,000
Weighted average duration of MBS portfolio	5 years 5 months
Mortgage-Backed Securities (MBS)
Schedule of Available-for-sale Securities [Line Items]
OTTI on evaluation of securities	$ 0		$ 0

INVESTMENT SECURITIES - Schedul

INVESTMENT SECURITIES - Schedule of Amortized Cost and Estimated Fair Value of Available-for-Sale and Held-to-Maturity Investment Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available-for-Sale Debt Securities
Amortized Cost	$ 933,678	$ 847,791
Gross Unrealized Gain	228	1,356
Gross Unrealized Loss	26,088	11,648
Investment securities available for sale	907,818	837,499
Held-to-Maturity Securities
Amortized Cost	159,672	161,186
Fair Value	159,164	162,853
Equity Investments
Amortized Cost	18,047	17,991
Gross Unrealized Gain	15,346	0
Gross Unrealized Loss	30	20
Fair Value	33,363	17,971
CMO
Available-for-Sale Debt Securities
Amortized Cost	277,079	250,592
Gross Unrealized Gain	5	88
Gross Unrealized Loss	7,848	4,141
Investment securities available for sale	269,236	246,539
FNMA MBS
Available-for-Sale Debt Securities
Amortized Cost	523,676	479,218
Gross Unrealized Gain	71	941
Gross Unrealized Loss	14,747	6,172
Investment securities available for sale	509,000	473,987
FHLMC MBS
Available-for-Sale Debt Securities
Amortized Cost	99,860	88,681
Gross Unrealized Gain	3	118
Gross Unrealized Loss	2,564	924
Investment securities available for sale	97,299	87,875
GNMA MBS
Available-for-Sale Debt Securities
Amortized Cost	33,063	29,300
Gross Unrealized Gain	149	209
Gross Unrealized Loss	929	411
Investment securities available for sale	32,283	29,098
Other investments
Equity Investments
Amortized Cost	3,947	3,943
Gross Unrealized Gain	0	0
Gross Unrealized Loss	30	20
Fair Value	3,917	3,923
State and political subdivisions
Held-to-Maturity Securities
Amortized Cost	159,672	161,186
Gross Unrealized Gain	310	1,758
Gross Unrealized Loss	818	91
Fair Value	159,164	162,853
Equity Investments
Available for sale securities transfers to held to maturity unrealized gains	1,500	1,600
Common Class B | Visa Class B shares | Common Stock
Equity Investments
Amortized Cost	14,100	14,048
Gross Unrealized Gain	15,346	0
Gross Unrealized Loss	0	0
Fair Value	$ 29,446	$ 14,048

INVESTMENT SECURITIES - Sched48

INVESTMENT SECURITIES - Schedule of Maturities of Investment Securities Available-for-Sale and Held-to-Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Available-for-sale securities, amortized cost within one year	$ 0	$ 0
Available-for-sale securities, amortized cost after one year but within five years	19,963	20,051
Available-for-sale securities, amortized cost after five years but within ten years	180,927	179,812
Available-for-sale securities, amortized cost after ten years	732,788	647,928
Available-for-sale securities, amortized cost total	933,678	847,791
Available-for-sale securities, fair value within one year	0	0
Available-for-sale securities, fair value after one year but within five years	19,389	19,825
Available-for-sale securities, fair value after five years but within ten years	173,171	175,583
Available-for-sale securities, fair value after ten years	715,258	642,091
Available-for-sale securities, fair value total	907,818	837,499
Held-to-maturity securities, amortized cost within one year	160	322
Held-to-maturity securities, amortized cost after one year but within five years	6,867	5,895
Held-to-maturity securities, amortized cost after five years but within ten years	20,042	18,751
Held-to-maturity securities, amortized cost after ten years	132,603	136,218
Amortized Cost	159,672	161,186
Held-to-maturity securities, fair value within one year	160	320
Held-to-maturity securities, fair value after one year but within five years	6,850	5,894
Held-to-maturity securities, after five years but within ten years	19,930	18,873
Held-to-maturity securities, after ten years	132,224	137,766
Held-to-maturity securities, fair value total	$ 159,164	$ 162,853

INVESTMENT SECURITIES - Sched49

INVESTMENT SECURITIES - Schedule of Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Less than 12 months, Fair Value	$ 613,137	$ 398,776
Available-for-sale securities, Less than 12 months, Unrealized Loss	13,601	3,624
Available-for-sale securities, 12 months or longer, Fair Value	234,674	239,678
Available-for-sale securities, 12 months or longer, Unrealized Loss	12,487	8,024
Available-for-sale securities, Total, Fair Value	847,811	638,454
Available-for-sale securities, Total, Unrealized Loss	26,088	11,648
Held-to-maturity, Less than 12 months, Fair Value	92,114	23,404
Held-to-maturity, Less than 12 months, Unrealized Loss	708	59
Held-to-maturity, 12 months or longer, Fair Value	5,372	5,625
Held-to-maturity, 12 months or longer, Unrealized Loss	110	32
Held-to-maturity, Total, Fair Value	97,486	29,029
Held-to-maturity, Total, Unrealized Loss	818	91
CMO
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Less than 12 months, Fair Value	186,243	146,726
Available-for-sale securities, Less than 12 months, Unrealized Loss	4,292	1,820
Available-for-sale securities, 12 months or longer, Fair Value	77,903	77,149
Available-for-sale securities, 12 months or longer, Unrealized Loss	3,556	2,321
Available-for-sale securities, Total, Fair Value	264,146	223,875
Available-for-sale securities, Total, Unrealized Loss	7,848	4,141
FNMA MBS
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Less than 12 months, Fair Value	339,535	204,921
Available-for-sale securities, Less than 12 months, Unrealized Loss	7,581	1,479
Available-for-sale securities, 12 months or longer, Fair Value	122,243	126,342
Available-for-sale securities, 12 months or longer, Unrealized Loss	7,166	4,693
Available-for-sale securities, Total, Fair Value	461,778	331,263
Available-for-sale securities, Total, Unrealized Loss	14,747	6,172
FHLMC MBS
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Less than 12 months, Fair Value	76,822	42,514
Available-for-sale securities, Less than 12 months, Unrealized Loss	1,463	269
Available-for-sale securities, 12 months or longer, Fair Value	20,401	21,405
Available-for-sale securities, 12 months or longer, Unrealized Loss	1,101	655
Available-for-sale securities, Total, Fair Value	97,223	63,919
Available-for-sale securities, Total, Unrealized Loss	2,564	924
GNMA MBS
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Less than 12 months, Fair Value	10,537	4,615
Available-for-sale securities, Less than 12 months, Unrealized Loss	265	56
Available-for-sale securities, 12 months or longer, Fair Value	14,127	14,782
Available-for-sale securities, 12 months or longer, Unrealized Loss	664	355
Available-for-sale securities, Total, Fair Value	24,664	19,397
Available-for-sale securities, Total, Unrealized Loss	929	411
Other investments
Schedule of Available-for-sale Securities [Line Items]
Other investments, Less than 12 months, Fair Value	0	0
Other investments, Less than 12 months, Unrealized Loss	0	0
Other investments, 12 months or longer, Fair Value	617	624
Other investments, 12 months or longer, Unrealized Loss	30	20
Other investments, Total, Fair Value	617	624
Other investments, Total, Unrealized Loss	30	20
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity, Less than 12 months, Fair Value	92,114	23,404
Held-to-maturity, Less than 12 months, Unrealized Loss	708	59
Held-to-maturity, 12 months or longer, Fair Value	5,372	5,625
Held-to-maturity, 12 months or longer, Unrealized Loss	110	32
Held-to-maturity, Total, Fair Value	97,486	29,029
Held-to-maturity, Total, Unrealized Loss	$ 818	$ 91

LOANS - Summary of Loan Portfol

LOANS - Summary of Loan Portfolio by Category (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 4,834,427	$ 4,805,094	$ 4,577,628
Deferred fees, net	7,829	7,991
Allowance for loan losses	40,810	40,599	39,826	$ 39,751
Net loans	4,805,758	4,776,318
Reverse mortgage, fair value	20,000	19,800	22,500
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	582,722	558,493	464,898
Allowance for loan losses	8,188	7,895	6,241	6,012
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,489,563	1,464,554
Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,080,662	1,079,247	1,092,292
Allowance for loan losses	5,359	5,422	6,030	6,588
Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,164,424	1,187,705	1,165,556
Allowance for loan losses	6,617	5,891	8,335	8,915
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	289,943	281,608	255,760
Allowance for loan losses	2,864	2,861	$ 2,961	$ 2,838
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	247,083	253,301
Financing Receivable Portfolio Segment, Including Reverse Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 4,854,397	$ 4,824,908

LOANS - Schedule of Outstanding

LOANS - Schedule of Outstanding Principal Balance and Carrying Amounts for Acquired Credit-Impaired Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Outstanding principal balance	$ 24,838	$ 27,034
Carrying amount	19,828	21,295
Allowance for loan losses	$ 326	$ 358

LOANS - Summary of Changes in A

LOANS - Summary of Changes in Accretable Yield on Acquired Credit Impaired Loans (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 3,035
Accretion	(417)
Reclassification from nonaccretable difference	2
Additions/adjustments	(180)
Disposals	0
Balance at the end of the period	$ 2,440

ALLOWANCE FOR LOAN LOSSES AND53

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2018USD ($)SecurityLoanloan	Mar. 31, 2017USD ($)loan	Dec. 31, 2017USD ($)SecurityLoan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net charge-offs	$ 3,400,000	$ 2,100,000
Percentage of average loans annualized, charged-offs	0.29%	0.19%
Reverse mortgage, fair value	$ 20,000,000	$ 22,500,000	$ 19,800,000
Performing TDRs	20,248,000	17,300,000	20,061,000
Acquired nonimpaired loans	534,841,000	675,607,000	565,500,000
Acquired impaired loans	5,600,000		5,800,000
Contractual principal balance	6,600,000		6,800,000
Acquired impaired loans	20,154,000	31,247,000	21,654,000
Interest income on impaired loans		$ 300,000
Accrued troubled debt restructured loans	14,200,000		15,300,000
Troubled debt restructuring related reserves	$ 800,000		1,000,000
Usual sustained repayment performance period	6 months
TRD defaulted | loan	2	3
Subsequent default, loan amount	$ 100,000	$ 700,000
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired nonimpaired loans	67,722,000	85,679,000
Acquired impaired loans	$ 777,000	866,000	$ 784,000
Number of residential loans in the process of foreclosure | SecurityLoan	38		33
Total loans outstanding, residential loans	$ 3,300,000		$ 2,900,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired nonimpaired loans	107,183,000	141,933,000
Acquired impaired loans	$ 3,870,000	5,256,000	$ 4,156,000
Number of residential loans in the process of foreclosure | SecurityLoan	10		8
Total loans outstanding, residential loans	$ 6,100,000		$ 6,000,000
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period for impairment loans	90 days
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in allowance for loan losses (less than)	$ 0	300,000
Troubled debt restructurings charged off (less than)	0	$ 0
Total Residential and Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired nonimpaired loans	$ 100,900,000		108,200,000
Impairment loans, charge off period	90 days
Total Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired nonimpaired loans	$ 434,000,000		$ 457,300,000

ALLOWANCE FOR LOAN LOSSES AND54

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Allowance for Loan Losses and Loan Balances (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Allowance for loan losses
Beginning balance	$ 40,599	$ 39,751	$ 39,751
Charge-offs	(3,880)	(2,719)
Recoveries	441	632
Provision (credit)	3,655	2,114
Provision for acquired loans	(5)	48
Ending balance	40,810	39,826	40,599
Loans individually evaluated for impairment	3,461	4,836
Loans collectively evaluated for impairment	37,023	34,526
Acquired loans evaluated for impairment	326	464
Ending balance	40,810	39,826
Loans individually evaluated for impairment	54,309	56,997
Loans collectively evaluated for impairment	4,225,123	3,813,777
Acquired nonimpaired loans	534,841	675,607	565,500
Acquired impaired loans	20,154	31,247	21,654
Ending balance	4,834,427	4,577,628	4,805,094
Owner-occupied commercial
Allowance for loan losses
Beginning balance	5,422	6,588	6,588
Charge-offs	(10)	(192)
Recoveries	5	75
Provision (credit)	(58)	(441)
Provision for acquired loans	0	0
Ending balance	5,359	6,030	5,422
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	5,347	6,015
Acquired loans evaluated for impairment	12	15
Ending balance	5,359	6,030
Loans individually evaluated for impairment	4,342	4,020
Loans collectively evaluated for impairment	938,166	919,508
Acquired nonimpaired loans	133,007	156,724
Acquired impaired loans	5,147	12,040	5,803
Ending balance	1,080,662	1,092,292	1,079,247
Commercial mortgages
Allowance for loan losses
Beginning balance	5,891	8,915	8,915
Charge-offs	(48)	(104)
Recoveries	134	46
Provision (credit)	617	(518)
Provision for acquired loans	23	(4)
Ending balance	6,617	8,335	5,891
Loans individually evaluated for impairment	0	1,395
Loans collectively evaluated for impairment	6,528	6,763
Acquired loans evaluated for impairment	89	177
Ending balance	6,617	8,335
Loans individually evaluated for impairment	5,946	9,771
Loans collectively evaluated for impairment	970,750	928,925
Acquired nonimpaired loans	178,518	216,410
Acquired impaired loans	9,210	10,450	9,724
Ending balance	1,164,424	1,165,556	1,187,705
Construction
Allowance for loan losses
Beginning balance	2,861	2,838	2,838
Charge-offs	0	(14)
Recoveries	1	2
Provision (credit)	27	158
Provision for acquired loans	(25)	(23)
Ending balance	2,864	2,961	2,861
Loans individually evaluated for impairment	0	500
Loans collectively evaluated for impairment	2,857	2,397
Acquired loans evaluated for impairment	7	64
Ending balance	2,864	2,961
Loans individually evaluated for impairment	6,490	3,130
Loans collectively evaluated for impairment	267,293	225,718
Acquired nonimpaired loans	15,259	24,540
Acquired impaired loans	901	2,372	940
Ending balance	289,943	255,760	281,608
Commercial
Allowance for loan losses
Beginning balance	16,732	13,339	13,339
Charge-offs	(3,360)	(1,255)
Recoveries	80	84
Provision (credit)	2,650	1,949
Provision for acquired loans	0	88
Ending balance	16,102	14,205	16,732
Loans individually evaluated for impairment	2,632	1,860
Loans collectively evaluated for impairment	13,296	12,165
Acquired loans evaluated for impairment	174	180
Ending balance	16,102	14,205
Loans individually evaluated for impairment	16,993	16,767
Loans collectively evaluated for impairment	1,361,517	1,175,911
Acquired nonimpaired loans	107,183	141,933
Acquired impaired loans	3,870	5,256	4,156
Ending balance	1,489,563	1,339,867	1,464,554
Residential
Allowance for loan losses
Beginning balance	1,798	2,059	2,059
Charge-offs	0	(11)
Recoveries	14	120
Provision (credit)	(129)	(114)
Provision for acquired loans	(3)	0
Ending balance	1,680	2,054	1,798
Loans individually evaluated for impairment	643	887
Loans collectively evaluated for impairment	1,001	1,144
Acquired loans evaluated for impairment	35	23
Ending balance	1,679	2,054
Loans individually evaluated for impairment	12,861	14,280
Loans collectively evaluated for impairment	145,753	158,430
Acquired nonimpaired loans	67,722	85,679
Acquired impaired loans	777	866	784
Ending balance	227,113	259,255	233,487
Consumer
Allowance for loan losses
Beginning balance	7,895	6,012	6,012
Charge-offs	(462)	(1,143)
Recoveries	207	305
Provision (credit)	548	1,080
Provision for acquired loans	0	(13)
Ending balance	8,188	6,241	7,895
Loans individually evaluated for impairment	186	194
Loans collectively evaluated for impairment	7,994	6,042
Acquired loans evaluated for impairment	9	5
Ending balance	8,189	6,241
Loans individually evaluated for impairment	7,677	9,029
Loans collectively evaluated for impairment	541,644	405,285
Acquired nonimpaired loans	33,152	50,321
Acquired impaired loans	249	263	247
Ending balance	$ 582,722	$ 464,898	$ 558,493

ALLOWANCE FOR LOAN LOSSES AND55

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Summary of Nonaccrual and Past Due Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	$ 9,237		$ 8,592
Accruing Current Balances	4,770,976		4,738,412
Acquired Impaired Loans	20,154	$ 31,247	21,654
Nonaccrual Loans	34,060		36,436
Total Loans	$ 4,834,427	4,577,628	$ 4,805,094
30-59 Days Past Due and Still Accruing, % of Total Loans	0.16%		0.14%
60-89 Days Past Due and Still Accruing, % of Total Loans	0.02%		0.03%
Greater Than 90 Days Past Due and Still Accruing, % of Total Loans	0.01%		0.01%
Total Past Due And Still Accruing, % of Total Loans	0.19%		0.18%
Accruing Current Balances, % of Total Loans	98.69%		98.61%
Acquired Impaired Loans, % of Total Loans	0.42%		0.45%
Nonaccrual Loans, % of Total Loans	0.70%		0.76%
% of Total Loans	99.98%		100.00%
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	$ 1,142		$ 1,050
Accruing Current Balances	1,467,695		1,440,291
Acquired Impaired Loans	3,870	5,256	4,156
Nonaccrual Loans	16,856		19,057
Total Loans	1,489,563	1,339,867	1,464,554
Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	2,812		3,145
Accruing Current Balances	219,366		225,434
Acquired Impaired Loans	777	866	784
Nonaccrual Loans	4,158		4,124
Total Loans	227,113	259,255	233,487
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	1,034		1,685
Accruing Current Balances	579,283		554,634
Acquired Impaired Loans	249	263	247
Nonaccrual Loans	2,156		1,927
Total Loans	582,722	464,898	558,493
30–59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	7,550		6,614
30–59 Days Past Due and Still Accruing | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	403		1,050
30–59 Days Past Due and Still Accruing | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	2,446		2,058
30–59 Days Past Due and Still Accruing | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	532		1,117
60–89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	1,132		1,517
60–89 Days Past Due and Still Accruing | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	708		0
60–89 Days Past Due and Still Accruing | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	211		731
60–89 Days Past Due and Still Accruing | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	179		463
Greater Than 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	555		461
Greater Than 90 Days Past Due and Still Accruing | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	31		0
Greater Than 90 Days Past Due and Still Accruing | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	155		356
Greater Than 90 Days Past Due and Still Accruing | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	323		105
Owner-occupied commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	1,529		2,302
Accruing Current Balances	1,069,644		1,067,488
Acquired Impaired Loans	5,147	12,040	5,803
Nonaccrual Loans	4,342		3,654
Total Loans	1,080,662	1,092,292	1,079,247
Owner-occupied commercial | 30–59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	1,529		2,069
Owner-occupied commercial | 60–89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	0		233
Owner-occupied commercial | Greater Than 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	0		0
Commercial mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	696		410
Accruing Current Balances	1,149,408		1,171,701
Acquired Impaired Loans	9,210	10,450	9,724
Nonaccrual Loans	5,110		5,870
Total Loans	1,164,424	1,165,556	1,187,705
Commercial mortgages | 30–59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	616		320
Commercial mortgages | 60–89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	34		90
Commercial mortgages | Greater Than 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	46		0
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	2,024		0
Accruing Current Balances	285,580		278,864
Acquired Impaired Loans	901	2,372	940
Nonaccrual Loans	1,438		1,804
Total Loans	289,943	$ 255,760	281,608
Construction | 30–59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	2,024		0
Construction | 60–89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	0		0
Construction | Greater Than 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due And Still Accruing	$ 0		$ 0

ALLOWANCE FOR LOAN LOSSES AND56

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Analysis of Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending Loan Balances	$ 59,941	$ 62,106
Loans with No Related Reserve	34,491	32,172
Loans with Related Reserve	25,450	29,934
Related Reserve	3,787	5,017
Contractual Principal Balances	79,756	78,982
Average Loan Balances	62,751	60,743
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending Loan Balances	18,592	20,842
Loans with No Related Reserve	3,038	3,422
Loans with Related Reserve	15,554	17,420
Related Reserve	2,806	3,861
Contractual Principal Balances	24,842	23,815
Average Loan Balances	17,941	15,072
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending Loan Balances	13,261	14,181
Loans with No Related Reserve	8,195	8,282
Loans with Related Reserve	5,066	5,899
Related Reserve	679	796
Contractual Principal Balances	15,992	17,015
Average Loan Balances	14,334	14,533
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending Loan Balances	7,911	7,819
Loans with No Related Reserve	6,480	6,304
Loans with Related Reserve	1,431	1,515
Related Reserve	194	203
Contractual Principal Balances	8,953	8,977
Average Loan Balances	8,136	8,158
Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending Loan Balances	6,032	5,374
Loans with No Related Reserve	4,342	3,654
Loans with Related Reserve	1,690	1,720
Related Reserve	12	12
Contractual Principal Balances	6,360	5,717
Average Loan Balances	6,103	5,827
Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending Loan Balances	7,427	7,598
Loans with No Related Reserve	5,946	4,487
Loans with Related Reserve	1,481	3,111
Related Reserve	89	112
Contractual Principal Balances	16,370	16,658
Average Loan Balances	11,103	12,630
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending Loan Balances	6,718	6,292
Loans with No Related Reserve	6,490	6,023
Loans with Related Reserve	228	269
Related Reserve	7	33
Contractual Principal Balances	7,239	6,800
Average Loan Balances	$ 5,134	$ 4,523

ALLOWANCE FOR LOAN LOSSES AND57

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Commercial Credit Exposure (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Loans	99.98%	100.00%
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	$ 1,489,563	$ 1,464,554
Special mention | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	24,871	22,789
Accrual | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	33,960	34,332
Nonaccrual | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	14,224	15,370
Doubtful | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	$ 2,632	$ 3,687
Total Special Mention and Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Loans	3.00%	3.00%
Total Special Mention and Substandard | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	$ 75,687	$ 76,178
Acquired impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Loans	1.00%	1.00%
Acquired impaired | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	$ 3,870	$ 4,156
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Loans	96.00%	96.00%
Pass | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	$ 1,410,006	$ 1,384,220
Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	1,080,662	1,079,247
Owner-occupied commercial | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	15,874	16,783
Owner-occupied commercial | Accrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	18,055	19,386
Owner-occupied commercial | Nonaccrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	4,342	3,654
Owner-occupied commercial | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	0	0
Owner-occupied commercial | Total Special Mention and Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	38,271	39,823
Owner-occupied commercial | Acquired impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	5,147	5,803
Owner-occupied commercial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	1,037,244	1,033,621
Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	1,164,424	1,187,705
Commercial mortgages | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	4,346	0
Commercial mortgages | Accrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	2,399	1,967
Commercial mortgages | Nonaccrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	5,110	5,852
Commercial mortgages | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	0	18
Commercial mortgages | Total Special Mention and Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	11,855	7,837
Commercial mortgages | Acquired impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	9,210	9,724
Commercial mortgages | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	1,143,359	1,170,144
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	289,943	281,608
Construction | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	0	0
Construction | Accrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	5,796	4,965
Construction | Nonaccrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	1,438	1,804
Construction | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	0	0
Construction | Total Special Mention and Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	7,234	6,769
Construction | Acquired impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	901	940
Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	281,808	273,899
Total Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	4,024,592	4,013,114
Total Commercial | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	45,091	39,572
Total Commercial | Accrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	60,210	60,650
Total Commercial | Nonaccrual
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	25,114	26,680
Total Commercial | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	2,632	3,705
Total Commercial | Total Special Mention and Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	133,047	130,607
Total Commercial | Acquired impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	19,128	20,623
Total Commercial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Commercial Loans	$ 3,872,417	$ 3,861,884

ALLOWANCE FOR LOAN LOSSES AND58

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Residential and Consumer Credit Exposure (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 4,834,427	$ 4,805,094	$ 4,577,628
Total	99.98%	100.00%
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 227,113	$ 233,487	259,255
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	582,722	558,493	$ 464,898
Nonperforming | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	12,861	13,778
Nonperforming | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	7,677	7,588
Performing | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	213,475	218,925
Performing | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 574,796	$ 550,658
Acquired impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1.00%	1.00%
Acquired impaired | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 777	$ 784
Acquired impaired | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	249	247
Total Residential and Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 809,835	$ 791,980
Total	100.00%	100.00%
Total Residential and Consumer | Nonperforming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 20,538	$ 21,366
Total	3.00%	3.00%
Total Residential and Consumer | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 788,271	$ 769,583
Total	97.00%	97.00%
Total Residential and Consumer | Acquired impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,026	$ 1,031
Total	0.00%	0.00%

ALLOWANCE FOR LOAN LOSSES AND59

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Receivables [Abstract]
Performing TDRs	$ 20,248	$ 17,300	$ 20,061
Nonperforming TDRs	9,907		9,627
Total TDRs	$ 30,155		$ 29,688

ALLOWANCE FOR LOAN LOSSES AND60

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Types of TDR (Detail) - loan	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	6	12
Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	1
Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	1	0
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	1
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	1	2
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	1
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	4	7
Contractual payment reduction and term extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	1	0
Contractual payment reduction and term extension | Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Contractual payment reduction and term extension | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Contractual payment reduction and term extension | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Contractual payment reduction and term extension | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Contractual payment reduction and term extension | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Contractual payment reduction and term extension | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	1	0
Maturity Date Extension
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	3	4
Maturity Date Extension | Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	1
Maturity Date Extension | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	1	0
Maturity Date Extension | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	1
Maturity Date Extension | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	1	2
Maturity Date Extension | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Maturity Date Extension | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	1	0
Discharged in bankruptcy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	7
Discharged in bankruptcy | Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Discharged in bankruptcy | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Discharged in bankruptcy | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Discharged in bankruptcy | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Discharged in bankruptcy | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	1
Discharged in bankruptcy | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	6
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	2	1
Other | Owner-occupied commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Other | Commercial mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Other | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Other | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Other | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	0	0
Other | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Modification Total	2	1

ALLOWANCE FOR LOAN LOSSES AND61

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Loans Identified as Troubled Debt Restructurings During Periods Indicated (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	$ 1,640	$ 6,052
Commercial
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	0	443
Commercial mortgages
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	458	0
Construction
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	920	1,712
Residential
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	0	242
Consumer
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	262	584
Owner-occupied commercial
Financing Receivable, Modifications [Line Items]
Total loans identified during the period	$ 0	$ 3,071

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Noninterest-bearing:
Noninterest demand	$ 1,372,271	$ 1,420,760
Total noninterest-bearing	1,372,271	1,420,760
Interest-bearing:
Interest-bearing demand	991,020	1,071,512
Savings	561,432	549,744
Money market	1,382,178	1,347,146
Total core deposits	2,934,630	2,968,402
Customer time deposits	642,116	629,071
Brokered deposits	253,498	229,371
Total interest-bearing	3,830,244	3,826,844
Total deposits	$ 5,202,515	$ 5,247,604

ASSOCIATE BENEFIT PLANS - Addit

ASSOCIATE BENEFIT PLANS - Additional Information (Detail)	Mar. 31, 2014	Mar. 31, 2018
Postemployment Benefits [Abstract]
Requisite service period	10 years
Amortization of unrecognized gains losses exceed percentage		10.00%

ASSOCIATE BENEFIT PLANS - Sched

ASSOCIATE BENEFIT PLANS - Schedule of Net Periodic Benefit Cost Components of Postretirement Benefits (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition [Line Items]
Service cost	$ 15	$ 15
Interest cost	17	19
Prior service cost amortization	(19)	(19)
Net gain recognition	(11)	(16)
Net periodic benefit cost	2	(1)
Alliance
Business Acquisition [Line Items]
Service cost	10	10
Interest cost	73	75
Expected return on plan assets	(135)	(135)
Prior service cost amortization	0	0
Net gain recognition	0	0
Net periodic benefit cost	$ (52)	$ (50)

INCOME TAXES (Detail)

INCOME TAXES (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Examination [Line Items]
Unrecognized tax benefits	$ 0
Amortization method qualified affordable housing project investments, amortization	500,000	$ 400,000
Tax benefits recorded as income tax expense	100,000
Carrying value of investment in affordable housing credits	13,300,000		$ 13,800,000
Tax Credit
Income Tax Examination [Line Items]
Affordable housing tax credits	$ 400,000

STOCK-BASED COMPENSATION - Addi

STOCK-BASED COMPENSATION - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 1	$ 0.9
Share-based compensation expense, net of tax	$ 0.8	$ 0.6
Options granted (in shares)	72,521
Options granted (in dollars per share)	$ 48.33
Award vesting period	1 year
Expiration period	7 years
Compensation not yet recognized	$ 1.3
Compensation cost not yet recognized, period for recognition	2 years 10 months 2 days
Stock Incentive Plan 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, outstanding (in shares)	2,096,535
Number of shares available for grant (in shares)	276,508
Award vesting rights	25.00%
Restricted Stock And Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.6
Award vesting period	4 years
Granted (in shares)	44,177
RSU granted (in dollars per share)	$ 48.40
Compensation not yet recognized, Share-based awards other than options	$ 3.8
Weighted average remaining contractual terms	2 years 10 months 28 days
Non-vested Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.3

STOCK-BASED COMPENSATION - Summ

STOCK-BASED COMPENSATION - Summary of Assumptions for Options Issued (Detail) - Stock Incentive Plan 2013 - Employee Stock Option	3 Months Ended
	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	5 years 3 months
Volatility	23.00%
Weighted-average risk-free interest rate	2.69%
Dividend yield	0.74%

FAIR VALUE DISCLOSURES OF FIN68

FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES - Schedule of Financial Instruments Carried at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	$ 907,818	$ 837,499
Total assets measured at fair value on a recurring basis	909,603	838,869
Other real estate owned	2,567	2,503
Loans held for sale	15,937	31,055
Total assets measured at fair value on a nonrecurring basis	107,404	107,995
Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other liabilities	4,335	3,225
Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned	2,567	2,503
Loans held for sale	15,937	31,055
Impaired loans, net	56,154	57,089
GSE | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale		0
CMO
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	269,236	246,539
CMO | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	269,236	246,539
FNMA MBS
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	509,000	473,987
FNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	509,000	473,987
FHLMC MBS
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	97,299	87,875
FHLMC MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	97,299	87,875
GNMA MBS
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	32,283	29,098
GNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	32,283	29,098
Other investments | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	617	623
Other investments | Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets measured at fair value on a nonrecurring basis	32,746	17,348
Other Assets | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	1,168	747
Quoted Prices in Active Markets for Identical Asset (Level 1)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets measured at fair value on a recurring basis	617	623
Total assets measured at fair value on a nonrecurring basis	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other liabilities	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned	0	0
Loans held for sale	0	0
Impaired loans, net	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | GSE | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale		0
Quoted Prices in Active Markets for Identical Asset (Level 1) | CMO | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | FNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | FHLMC MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | GNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Other investments | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	617	623
Quoted Prices in Active Markets for Identical Asset (Level 1) | Other investments | Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets measured at fair value on a nonrecurring basis	0	0
Quoted Prices in Active Markets for Identical Asset (Level 1) | Other Assets | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets measured at fair value on a recurring basis	908,986	838,246
Total assets measured at fair value on a nonrecurring basis	15,937	31,055
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other liabilities	4,335	3,225
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned	0	0
Loans held for sale	15,937	31,055
Impaired loans, net	0	0
Significant Other Observable Inputs (Level 2) | GSE | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale		0
Significant Other Observable Inputs (Level 2) | CMO | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	269,236	246,539
Significant Other Observable Inputs (Level 2) | FNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	509,000	473,987
Significant Other Observable Inputs (Level 2) | FHLMC MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	97,299	87,875
Significant Other Observable Inputs (Level 2) | GNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	32,283	29,098
Significant Other Observable Inputs (Level 2) | Other investments | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Significant Other Observable Inputs (Level 2) | Other investments | Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets measured at fair value on a nonrecurring basis	0	0
Significant Other Observable Inputs (Level 2) | Other Assets | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	1,168	747
Significant Unobservable Inputs (Level 3)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets measured at fair value on a recurring basis	0	0
Total assets measured at fair value on a nonrecurring basis	91,467	76,940
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other liabilities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned	2,567	2,503
Loans held for sale	0	0
Impaired loans, net	56,154	57,089
Significant Unobservable Inputs (Level 3) | GSE | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale		0
Significant Unobservable Inputs (Level 3) | CMO | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | FNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | FHLMC MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | GNMA MBS | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Other investments | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Other investments | Fair Value, Measurements, Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total assets measured at fair value on a nonrecurring basis	32,746	17,348
Significant Unobservable Inputs (Level 3) | Other Assets | Fair Value, Measurements, Recurring
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investment securities available for sale	$ 0	$ 0

FAIR VALUE DISCLOSURES OF FIN69

FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES - Additional Information (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	$ 907,818,000	$ 837,499,000	$ 907,818,000
Minimum discount rate on appraisals of collateral securing loan			10.00%
Maximum discount rate on appraisals of collateral securing loan			20.00%
Loan balances	59,941,000	62,106,000	$ 59,941,000
Related reserve	3,787,000	5,017,000	3,787,000
Commitments of lending operations	0	$ 0
Significant Other Observable Inputs (Level 2) | Federal Agency MBS
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	$ 907,800,000		907,800,000
Accounting Standards Update 2016-01
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities unrealized gain			$ 15,300,000

FAIR VALUE DISCLOSURES OF FIN70

FAIR VALUE DISCLOSURES OF FINANCIAL ASSETS AND LIABILITIES - Book Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets:
Investment securities available for sale	$ 907,818	$ 837,499
Investment securities held to maturity	159,672	161,186
Other investments	33,363	17,971
Loans, held for sale	15,937	31,055
Loans, net	4,805,758	4,776,318
Stock in FHLB of Pittsburgh	28,854	31,284
Accrued interest receivable	19,969	19,405
Other assets	61,200	59,068
Financial liabilities:
Deposits	5,202,515	5,247,604
Accrued interest payable	3,450	1,037
Book Value | Quoted Prices in Active Markets for Identical Asset (Level 1)
Financial assets:
Cash and cash equivalents	711,089	723,866
Book Value | Fair Value Inputs Level 1 And Level 2
Financial assets:
Investment securities available for sale	907,818	837,499
Book Value | Significant Other Observable Inputs (Level 2)
Financial assets:
Investment securities held to maturity	159,672	161,186
Loans, held for sale	15,937	31,055
Stock in FHLB of Pittsburgh	28,854	31,284
Accrued interest receivable	19,969	19,405
Financial liabilities:
Deposits	5,202,515	5,247,604
Borrowed funds	932,197	937,806
Accrued interest payable	3,450	1,037
Other liabilities	4,335	3,188
Book Value | Fair Value Inputs Level 1 And Level 3
Financial assets:
Other investments	33,363	17,971
Book Value | Fair Value Inputs Level 2 And Level 3
Financial assets:
Loans, net	4,749,604	4,719,229
Book Value | Significant Unobservable Inputs (Level 3)
Financial assets:
Impaired loans, net	56,154	57,089
Other assets	1,606	790
Financial liabilities:
Standby letters of credit	562	603
Fair Value | Quoted Prices in Active Markets for Identical Asset (Level 1)
Financial assets:
Cash and cash equivalents	711,089	723,866
Fair Value | Fair Value Inputs Level 1 And Level 2
Financial assets:
Investment securities available for sale	907,818	837,499
Fair Value | Significant Other Observable Inputs (Level 2)
Financial assets:
Investment securities held to maturity	159,164	162,853
Loans, held for sale	15,937	31,055
Stock in FHLB of Pittsburgh	28,854	31,284
Accrued interest receivable	19,969	19,405
Financial liabilities:
Deposits	4,768,066	4,848,588
Borrowed funds	925,902	937,605
Accrued interest payable	3,450	1,037
Other liabilities	4,335	3,188
Fair Value | Fair Value Inputs Level 1 And Level 3
Financial assets:
Other investments	33,363	48,050
Fair Value | Fair Value Inputs Level 2 And Level 3
Financial assets:
Loans, net	4,732,340	4,699,458
Fair Value | Significant Unobservable Inputs (Level 3)
Financial assets:
Impaired loans, net	56,154	57,089
Other assets	1,606	790
Financial liabilities:
Standby letters of credit	$ 562	$ 603

DERIVATIVE FINANCIAL INSTRUME71

DERIVATIVE FINANCIAL INSTRUMENTS - Fair Value of Derivative Instruments (Detail)	Mar. 31, 2018USD ($)instrument
Derivative [Line Items]
Notional	$ 216,387,000
Total derivatives	(3,181,000)
Designated as Hedging Instrument
Derivative [Line Items]
Notional	75,000,000
Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional	141,387,000
Total derivatives	1,017,000
Other Liabilities | Designated as Hedging Instrument
Derivative [Line Items]
Derivative Liability	$ (4,198,000)
Interest Rate Products | Other Liabilities | Designated as Hedging Instrument
Derivative [Line Items]
Count | instrument	3
Notional	$ 75,000,000
Derivative Liability	(4,198,000)
Interest rate lock commitment with customers | Other Assets | Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional	62,920,000
Derivative Asset	929,000
Interest rate lock commitment with customers | Other Liabilities | Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional	9,558,000
Derivative Liability	42,000
Forward sale commitments | Other Assets | Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional	32,895,000
Derivative Asset	238,000
Forward sale commitments | Other Liabilities | Derivatives not designated as hedging instruments
Derivative [Line Items]
Notional	36,014,000
Derivative Liability	$ 108,000

DERIVATIVE FINANCIAL INSTRUME72

DERIVATIVE FINANCIAL INSTRUMENTS - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018USD ($)
Derivative [Line Items]
Derivative hedge Ineffectiveness gain (loss)	$ 0
Interest rate cash flow hedge increase decrease interest expense to be reclassified during next 12 months net	800,000
Interest rate cash flow hedge gain (loss) reclassified to earnings, net	100,000
Notional	216,387,000
Collateral value against obligations	4,500,000
Designated as Hedging Instrument
Derivative [Line Items]
Notional	75,000,000
Accrued Liabilities
Derivative [Line Items]
Termination value of derivatives	$ (4,200,000)

DERIVATIVE FINANCIAL INSTRUME73

DERIVATIVE FINANCIAL INSTRUMENTS - Effect of Derivative Instruments on the Income Statement (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	$ (764)	$ (3,039)
Interest Rate Products
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)	(764)	(3,039)
Derivatives not designated as hedging instruments
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Income	1,017	0
Derivatives not designated as hedging instruments | Mortgage banking activity, net | Interest rate lock commitment with customers
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Income	1,100	0
Derivatives not designated as hedging instruments | Mortgage banking activity, net | Forward sale commitments
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Income	$ (83)	$ 0

SEGMENT INFORMATION - Additiona

SEGMENT INFORMATION - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018Business_LineSegment
Segment Reporting [Abstract]
Number of businesses | Segment	3
Number of business lines | Business_Line	6

SEGMENT INFORMATION - Details o

SEGMENT INFORMATION - Details of Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Interest income	$ 67,613	$ 60,826
Noninterest income	47,467	28,092
Total revenue	115,080	88,918
Interest expense	9,899	7,723
Noninterest expenses	53,412	51,506
Provision for loan losses	3,650	2,162
Total expenses	66,961	61,391
Income before taxes	48,119	27,527
Income tax provision	10,769	8,590
Net income	37,350	18,937
Inter-Segment Eliminations
Segment Reporting Information [Line Items]
Interest income	5,331	4,061
Noninterest income	2,323	2,391
Total revenue	7,654	6,452
Interest expense	5,331	4,061
Noninterest expenses	2,323	2,391
Total expenses	7,654	6,452
Operating Segments
Segment Reporting Information [Line Items]
Total revenue	122,734	95,370
Total expenses	74,615	67,843
WSFS Bank
Segment Reporting Information [Line Items]
Interest income	65,290	58,688
Noninterest income	26,606	10,167
Total revenue	91,896	68,855
Interest expense	9,503	7,463
Noninterest expenses	39,435	38,960
Provision for loan losses	3,661	1,716
Total expenses	52,599	48,139
Income before taxes	41,795	22,584
WSFS Bank | Inter-Segment Eliminations
Segment Reporting Information [Line Items]
Interest income	2,968	1,996
Noninterest income	2,108	2,164
Total revenue	5,076	4,160
Interest expense	2,363	2,065
Noninterest expenses	215	227
Total expenses	2,578	2,292
WSFS Bank | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	96,972	73,015
Total expenses	55,177	50,431
Cash Connect
Segment Reporting Information [Line Items]
Interest income	0	0
Noninterest income	11,353	9,677
Total revenue	11,353	9,677
Interest expense	0	0
Noninterest expenses	7,319	6,135
Provision for loan losses	0	0
Total expenses	7,319	6,135
Income before taxes	1,484	1,613
Cash Connect | Inter-Segment Eliminations
Segment Reporting Information [Line Items]
Interest income	0	0
Noninterest income	181	191
Total revenue	181	191
Interest expense	2,059	1,405
Noninterest expenses	672	715
Total expenses	2,731	2,120
Cash Connect | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	11,534	9,868
Total expenses	10,050	8,255
Wealth Management
Segment Reporting Information [Line Items]
Interest income	2,323	2,138
Noninterest income	9,508	8,248
Total revenue	11,831	10,386
Interest expense	396	260
Noninterest expenses	6,658	6,411
Provision for loan losses	(11)	446
Total expenses	7,043	7,117
Income before taxes	4,840	3,330
Wealth Management | Inter-Segment Eliminations
Segment Reporting Information [Line Items]
Interest income	2,363	2,065
Noninterest income	34	36
Total revenue	2,397	2,101
Interest expense	909	591
Noninterest expenses	1,436	1,449
Total expenses	2,345	2,040
Wealth Management | Operating Segments
Segment Reporting Information [Line Items]
Total revenue	14,228	12,487
Total expenses	$ 9,388	$ 9,157

SEGMENT INFORMATION - Details76

SEGMENT INFORMATION - Details of Segment Information - Statement of Financial Condition (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Cash and cash equivalents	$ 711,089	$ 723,866	$ 855,263	$ 821,923
Goodwill	166,007	166,007
Other segment assets	6,110,835	6,109,667
Total assets	6,987,931	6,999,540
Capital expenditures	2,224	8,994
WSFS Bank
Segment Reporting Information [Line Items]
Cash and cash equivalents	112,124	104,530
Goodwill	145,808	145,808
Other segment assets	5,880,317	5,882,910
Total assets	6,138,249	6,133,248
Capital expenditures	2,070	8,197
Cash Connect
Segment Reporting Information [Line Items]
Cash and cash equivalents	588,862	611,385
Goodwill	0	0
Other segment assets	6,717	6,078
Total assets	595,579	617,463
Capital expenditures	32	184
Wealth Management
Segment Reporting Information [Line Items]
Cash and cash equivalents	10,103	7,951
Goodwill	20,199	20,199
Other segment assets	223,801	220,679
Total assets	254,103	248,829
Capital expenditures	$ 122	$ 613

INDEMNIFICATIONS AND GUARANTE77

INDEMNIFICATIONS AND GUARANTEES (Detail)	3 Months Ended
	Mar. 31, 2018USD ($)loanTransactionFinancial_Institution	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)loan
Guarantor Obligations [Line Items]
Provision for losses at the time of sale	$ 3,650,000	$ 2,162,000
Number of unrelated financial institutions | Financial_Institution	4
Derivative transaction held for guarantee | loan	129		134
Notional	$ 216,387,000
Aggregate fair value of swaps to customers	4,700,000		$ 3,300,000
Reserves for swap guarantees	$ 0
Minimum
Guarantor Obligations [Line Items]
Notional amount maturity period	1 year
Maximum
Guarantor Obligations [Line Items]
Notional amount maturity period	10 years
Secondary Market Loan Sales
Guarantor Obligations [Line Items]
Provision for losses at the time of sale	$ 0
Number of loans repurchased | Transaction	0
Interest Rate Swap [Member]
Guarantor Obligations [Line Items]
Notional	$ 558,300,000		$ 561,800,000

CHANGE IN ACCUMULATED OTHER C78

CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS - Components of Accumulated Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 724,345	$ 687,336
Other comprehensive (loss) income before reclassifications	(12,592)	1,160
Less: Amounts reclassified from accumulated other comprehensive (loss) income	(76)	(330)
Net current-period other comprehensive income (loss)	(12,668)	830
Ending Balance	746,279	704,001
Net change in investment securities available for sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(7,842)	(8,194)
Other comprehensive (loss) income before reclassifications	(11,827)	1,272
Less: Amounts reclassified from accumulated other comprehensive (loss) income	(16)	(206)
Net current-period other comprehensive income (loss)	(11,843)	1,066
Ending Balance	(19,685)	(7,128)
Net change in securities held to maturity
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	1,223	1,392
Other comprehensive (loss) income before reclassifications	0	0
Less: Amounts reclassified from accumulated other comprehensive (loss) income	(119)	(101)
Net current-period other comprehensive income (loss)	(119)	(101)
Ending Balance	1,104	1,291
Net change in defined benefit plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	865	957
Other comprehensive (loss) income before reclassifications	0	0
Less: Amounts reclassified from accumulated other comprehensive (loss) income	59	(23)
Net current-period other comprehensive income (loss)	59	(23)
Ending Balance	924	934
Net change in fair value of derivative used for cash flow hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(2,398)	(1,772)
Other comprehensive (loss) income before reclassifications	(765)	(112)
Less: Amounts reclassified from accumulated other comprehensive (loss) income	0	0
Net current-period other comprehensive income (loss)	(765)	(112)
Ending Balance	(3,163)	(1,884)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(8,152)	(7,617)
Ending Balance	$ (20,820)	$ (6,787)

CHANGE IN ACCUMULATED OTHER C79

CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS - Components of Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains on securities transactions	$ 21	$ 320
Income taxes	(10,769)	(8,590)
Income before taxes	48,119	27,527
Net income	37,350	18,937
Prior service cost (credit), tax adjustment	100
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(76)	(330)
Reclassification out of Accumulated Other Comprehensive Income | Net change in defined benefit plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service costs (credits) (1)	59	(19)
Transition obligation	0	0
Actuarial gains	(11)	(16)
Income taxes	11	12
Income before taxes	48	(35)
Net income	59	(23)
Reclassification out of Accumulated Other Comprehensive Income | Realized Gains on Securities Transactions | Net change in investment securities available for sale
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains on securities transactions	(21)	(320)
Income taxes	5	114
Net income	(16)	(206)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Net Unrealized Gains to Income During Period | Net change in investment securities available for sale
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net unrealized gains to income during the period	(156)	(160)
Income taxes	37	59
Net income	$ (119)	$ (101)

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Total deposits from related parties	$ 6.9	$ 5.4
Loans
Related Party Transaction [Line Items]
Related party loan repayment	2	$ 1.2
New Loans And Credit Line Advance To Related Parties
Related Party Transaction [Line Items]
New loans and credit line advance to related parties	0.8
Repayments from related party debt (less than in current quarter)	$ 0.1

LEGAL AND OTHER PROCEEDINGS (De

LEGAL AND OTHER PROCEEDINGS (Detail) - USD ($)	Feb. 27, 2018	Mar. 31, 2018
Loss Contingencies [Line Items]
Additions to other significant pending legal or other proceedings		$ 0
Universitas Education, LLC | Settled Litigation
Loss Contingencies [Line Items]
Loss related to litigation settlement	$ 12,000,000