Univest Financial (UVSP) 10-Q 4 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 01, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	UNIVEST CORP OF PENNSYLVANIA
Entity Central Index Key	102,212
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	UVSP
Amendment Flag	false
Entity Common Stock, Shares Outstanding		29,406,826

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 34,752	$ 46,721
Interest-earning deposits with other banks	13,879	28,688
Investment securities held-to-maturity (fair value $82,975 and $55,320 at March 31, 2018 and December 31, 2017, respectively)	84,393	55,564
Investment securities available-for-sale	376,787	397,442
Investments in equity securities	1,072	1,076
Federal Home Loan Bank, Federal Reserve Bank and other stock, at cost	32,801	27,204
Loans held for sale	687	1,642
Loans and leases held for investment	3,689,888	3,620,067
Less: Reserve for loan and lease losses	(23,410)	(21,555)
Net loans and leases held for investment	3,666,478	3,598,512
Premises and equipment, net	61,397	61,797
Goodwill	172,559	172,559
Other intangibles, net of accumulated amortization and fair value adjustments of $22,725 and $21,825 at March 31, 2018 and December 31, 2017, respectively	13,346	13,909
Bank owned life insurance	109,692	108,246
Accrued interest receivable and other assets	46,116	41,502
Total assets	4,613,959	4,554,862
LIABILITIES
Noninterest-bearing deposits	1,002,021	1,040,026
Interest-bearing deposits:
Demand deposits	1,159,737	1,109,438
Savings deposits	815,032	830,706
Time deposits	520,503	574,749
Total deposits	3,497,293	3,554,919
Short-term borrowings	216,426	105,431
Long-term debt	155,692	155,828
Subordinated notes	94,392	94,331
Accrued interest payable and other liabilities	43,437	40,979
Total liabilities	4,007,240	3,951,488
SHAREHOLDERS’ EQUITY
Common stock, $5 par value: 48,000,000 shares authorized at March 31, 2018 and December 31, 2017; 31,556,799 shares issued at March 31, 2018 and December 31, 2017; 29,391,934 and 29,334,859 shares outstanding at March 31, 2018 and December 31, 2017, respectively	157,784	157,784
Additional paid-in capital	290,095	290,133
Retained earnings	228,097	216,761
Accumulated other comprehensive loss, net of tax benefit	(26,791)	(17,771)
Treasury stock, at cost; 2,164,865 and 2,221,940 shares at March 31, 2018 and December 31, 2017, respectively	(42,466)	(43,533)
Total shareholders’ equity	606,719	603,374
Total liabilities and shareholders’ equity	$ 4,613,959	$ 4,554,862

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Securities Held-to-Maturity, Fair Value	$ 82,975	$ 55,320
Accumulated amortization and fair value adjustments on other intangibles	$ 22,725	$ 21,825
Common stock, par value	$ 5	$ 5
Common stock, shares authorized	48,000,000	48,000,000
Common stock, shares issued	31,556,799	31,556,799
Common stock, shares outstanding	29,391,934	29,334,859
Treasury stock, shares	2,164,865	2,221,940

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Interest and fees on loans and leases:
Taxable		$ 37,950	$ 33,700
Exempt from federal income taxes		2,347	2,035
Total interest and fees on loans and leases		40,297	35,735
Interest and dividends on investment securities:
Taxable		2,189	1,688
Exempt from federal income taxes		468	599
Interest on deposits with other banks		76	17
Interest and dividends on other earning assets		504	357
Total interest income		43,534	38,396
Interest expense
Interest on deposits		3,691	2,191
Interest on short-term borrowings		645	262
Interest on long-term debt and subordinated notes		1,926	1,660
Total interest expense		6,262	4,113
Net interest income	[1]	37,272	34,283
Provision for loan and lease losses		2,053	2,445
Net interest income after provision for loan and lease losses		35,219	31,838
Noninterest income
Trust fee income		1,996	1,907
Service charges on deposit accounts		1,327	1,243
Investment advisory commission and fee income		3,683	3,181
Insurance commission and fee income		4,888	4,410
Other service fee income	[2]	2,169	1,987
Bank owned life insurance income	[1]	669	783
Net gain on sales of investment securities	[1]	10	15
Net gain on mortgage banking activities	[1]	716	1,113
Other income	[2]	124	331
Total noninterest income		15,582	14,970
Noninterest expense
Salaries, benefits and commissions		20,647	18,737
Net occupancy		2,757	2,665
Equipment		1,023	993
Data processing		2,232	2,058
Professional fees		1,355	1,239
Marketing and advertising		381	379
Deposit insurance premiums		391	402
Intangible expenses		612	759
Restructuring charges		571	0
Other expense		5,156	4,798
Total noninterest expense		35,125	32,030
Income before income taxes		15,676	14,778
Income tax expense		2,826	3,922
Net income		$ 12,850	$ 10,856
Net income per share:
Basic (in dollars per share)		$ 0.44	$ 0.41
Diluted (in dollars per share)		0.44	0.41
Dividends declared (in dollars per share)		$ 0.20	$ 0.20
[1]	(1)Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of the standard. Noninterest income streams that are out-of-scope of the standard include bank owned life insurance income, sales of investment securities and mortgage banking activities.
[2]	(2)Other service fee income and other income include certain items that are in scope and certain items that are out of scope of the standard and are described further in the following paragraphs.

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Before Tax Amount
(Loss) income, Before Tax Amount		$ 15,676	$ 14,778
Net unrealized gains (losses) on available-for-sale investment securities, Before Tax Amount
Net unrealized holding (losses) gains arising during the period		(6,338)	420
Less: reclassification adjustment for net gains on sales realized in net income	[1]	(10)	(15)
Total net unrealized (losses) gains on available-for-sale investment securities		(6,348)	405
Cash flow hedge derivative, Before Tax Amount
Net unrealized holding gains arising during the period		212	7
Less: reclassification adjustment for net losses realized in net income	[2]	20	71
Total net unrealized gains on interest rate swaps used in cash flow hedges		232	78
Defined benefit pension plans, Before Tax Amount
Amortization of net actuarial loss included in net periodic pension costs	[3]	281	299
Accretion of prior service cost included in net periodic pension costs	[3]	(71)	(70)
Total defined benefit pension plans		210	229
Other comprehensive income, Before Tax Amount		(5,906)	712
Total comprehensive income (loss), Before Tax Amount		9,770	15,490
Tax Expense (Benefit)
Income tax expense		2,826	3,922
Net unrealized gains (losses) on available-for-sale investment securities, Tax Expense (Benefit)
Net unrealized holding (losses) gains arising during the period		(1,331)	147
Less: reclassification adjustment for net gains on sales realized in net income	[1]	(2)	(5)
Total net unrealized (losses) gains on available-for-sale investment securities		(1,333)	142
Net unrealized losses on interest rate swaps used in cash flow hedges, Tax Expense (Benefit)
Net unrealized holding losses arising during the period		45	2
Less: reclassification adjustment for net losses realized in net income	[2]	4	25
Total net unrealized gains (losses) on interest rate swaps used in cash flow hedges		49	27
Defined benefit pension plans, Tax Expense (Benefit)
Amortization of net actuarial loss included in net periodic pension costs	[3]	59	105
Accretion of prior service cost included in net periodic pension costs	[3]	(15)	(24)
Total defined benefit pension plans		44	81
Other comprehensive income, Tax Expense (Benefit)		(1,240)	250
Total comprehensive income (loss), Tax Expense (Benefit)		1,586	4,172
Net of Tax Amount
Net income		12,850	10,856
Net unrealized gains (losses) on available-for-sale investment securities, Net of Tax Amount
Net unrealized holding (losses) gains arising during the period		(5,007)	273
Less: reclassification adjustment for net gains on sales realized in net income	[1]	(8)	(10)
Total net unrealized (losses) gains on available-for-sale investment securities		(5,015)	263
Total net unrealized gains (losses) on interest rate swaps used in cash flow hedges, Net of Tax Amount
Net unrealized holding gains arising during the period		167	5
Less: reclassification adjustment for net losses realized in net income	[2]	16	46
Total net unrealized gains on interest rate swaps used in cash flow hedges		183	51
Defined benefit pension plans, Net of Tax Amount
Amortization of net actuarial loss included in net periodic pension costs	[3]	222	194
Accretion of prior service cost included in net periodic pension costs	[3]	(56)	(46)
Total defined benefit pension plans		166	148
Other comprehensive income, Net of Tax Amount		(4,666)	462
Total comprehensive income (loss), Net of Tax Amount		$ 8,184	$ 11,318
[1]	(1) Included in net gain on sales of investment securities on the consolidated statements of income (before tax amount).
[2]	(2) Included in interest expense on deposits on the consolidated statements of income (before tax amount).
[3]	(3) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost (before tax amount). See Note 8, "Retirement Plans and Other Postretirement Benefits" for additional details.

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]		Accumulated Other Comprehensive (Loss) Income [Member]		Treasury Stock [Member]
Beginning balance at Dec. 31, 2016	$ 505,209	$ 144,559	$ 230,494	$ 194,516		$ (19,454)		$ (44,906)
Beginning balance, shares at Dec. 31, 2016		26,589,353
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,856	$ 0	0	10,856		0		0
Other comprehensive loss, net of income tax benefit	462	0	0	0		462		0
Cash dividends declared ($0.20 per share)	(5,322)	0	0	(5,322)		0		0
Stock issued under dividend reinvestment and employee stock purchase plans	617	$ 0	16	0		0		601
Stock issued under dividend reinvestment and employee stock purchase plans, shares		20,944
Exercise of stock options	861	$ 0	(62)	0		0		923
Exercise of stock options, shares		47,704
Stock-based compensation	831	$ 0	831	0		0		0
Purchases of treasury stock	(1,634)	$ 0	0	0		0		(1,634)
Purchases of treasury stock, shares		(57,804)
Restricted stock awards granted, net of cancellations	0	$ 0	(888)	0		0		888
Restricted stock awards granted, net of cancellations, shares		45,323
Ending balance at Mar. 31, 2017	511,880	$ 144,559	230,391	200,050		(18,992)		(44,128)
Ending balance, shares at Mar. 31, 2017		26,645,520
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption | Accounting Standards Update 2016-01 [Member]	0	$ 0	0	433	[1]	(433)	[1],[2]	0
Cumulative Effect of New Accounting Pronouncement in Period of Adoption | Accounting Standards Update 2018-02 [Member]	0	0	0	3,921	[1]	(3,921)	[1],[2]	0
Beginning balance at Dec. 31, 2017	603,374	$ 157,784	290,133	216,761		(17,771)		(43,533)
Beginning balance, shares at Dec. 31, 2017		29,334,859
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,850	$ 0	0	12,850		0		0
Other comprehensive loss, net of income tax benefit	(4,666)	0	0	0		(4,666)		0
Cash dividends declared ($0.20 per share)	(5,868)	0	0	(5,868)		0		0
Stock issued under dividend reinvestment and employee stock purchase plans	569	$ 0	44	0		0		525
Stock issued under dividend reinvestment and employee stock purchase plans, shares		20,253
Exercise of stock options	$ 268	$ 0	(9)	0		0		277
Exercise of stock options, shares	14,158	14,158
Stock-based compensation	$ 847	$ 0	847	0		0		0
Purchases of treasury stock	(655)	$ 0	0	0		0		(655)
Purchases of treasury stock, shares		(23,539)
Restricted stock awards granted, net of cancellations	0	$ 0	(920)	0		0		920
Restricted stock awards granted, net of cancellations, shares		46,203
Ending balance at Mar. 31, 2018	$ 606,719	$ 157,784	$ 290,095	$ 228,097		$ (26,791)		$ (42,466)
Ending balance, shares at Mar. 31, 2018		29,391,934
[1]	(1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2018" for additional information.
[2]	(1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2018" for additional information.

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividends declared, per share	$ 0.20	$ 0.20

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income		$ 12,850	$ 10,856
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses		2,053	2,445
Depreciation of premises and equipment		1,408	1,192
Net amortization of investment securities premiums and discounts		402	515
Net gain on sales of investment securities	[1]	(10)	(15)
Net gain on mortgage banking activities	[1]	(716)	(1,113)
Bank owned life insurance income	[1]	(669)	(783)
Net accretion of acquisition accounting fair value adjustments		(146)	(764)
Stock-based compensation		847	831
Intangible expenses		612	759
Other adjustments to reconcile net income to cash (used in) provided by operating activities		(18)	957
Originations of loans held for sale		(28,468)	(24,828)
Proceeds from the sale of loans held for sale		30,320	30,568
Contributions to pension and other postretirement benefit plans		(67)	(69)
(Increase) decrease in accrued interest receivable and other assets		(3,307)	851
Increase (decrease) in accrued interest payable and other liabilities		2,805	(3,715)
Net cash provided by operating activities		17,896	17,687
Cash flows from investing activities:
Net capital expenditures		(1,009)	(2,299)
Proceeds from maturities, calls and principal repayments of securities held-to-maturity		1,721	10,026
Proceeds from maturities, calls and principal repayments of securities available-for-sale		20,439	18,782
Proceeds from sales of securities available-for-sale		1,010	1,762
Purchases of investment securities held-to-maturity		(30,641)	(18,209)
Purchases of investment securities available-for-sale		(7,692)	(9,009)
Net increase in other investments		(5,597)	(453)
Net increase in loans and leases		(69,830)	(56,550)
Net decrease (increase) in interest-earning deposits		14,809	(3,987)
Proceeds from sales of other real estate owned		0	2,039
Purchases of bank owned life insurance		777	0
Proceeds from bank owned life insurance		0	211
Net cash used in investing activities		(77,567)	(57,687)
Cash flows from financing activities:
Net (decrease) increase in deposits		(57,575)	108,543
Net increase (decrease) in short-term borrowings		110,995	(116,805)
Proceeds from issuance of long-term debt		0	55,000
Payment of contingent consideration on acquisitions		(34)	(5,284)
Purchases of treasury stock		(655)	(1,634)
Stock issued under dividend reinvestment and employee stock purchase plans		569	617
Proceeds from exercise of stock options		268	861
Cash dividends paid		(5,866)	(5,310)
Net cash provided by financing activities		47,702	35,988
Net decrease in cash and due from banks		(11,969)	(4,012)
Cash and due from banks at beginning of year		46,721	48,757
Cash and due from banks at end of period		34,752	44,745
Supplemental disclosures of cash flow information:
Cash paid for interest		6,361	4,729
Cash paid for income taxes, net of refunds		145	157
Non cash transactions:
Transfer of loans to other real estate owned		$ 0	$ 653
[1]	(1)Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of the standard. Noninterest income streams that are out-of-scope of the standard include bank owned life insurance income, sales of investment securities and mortgage banking activities.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Principles of Consolidation and Basis of Presentation The accompanying unaudited consolidated financial statements include the accounts of Univest Corporation of Pennsylvania (the Corporation or Univest) and its wholly owned subsidiaries. The Corporation’s direct subsidiary is Univest Bank and Trust Co. (the Bank). All significant intercompany balances and transactions have been eliminated in consolidation. The unaudited interim consolidated financial statements included herein have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the SEC). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) have been condensed or omitted pursuant to such rules and regulations for interim financial information. The accompanying unaudited consolidated financial statements reflect all adjustments which are of a normal recurring nature and are, in the opinion of management, necessary for a fair presentation of the financial statements for the interim periods presented. Certain prior period amounts have been reclassified to conform to the current-year presentation. Operating results for the three -month period ended March 31, 2018 are not necessarily indicative of the results that may be expected for the year ended December 31, 2018 or for any other period. It is suggested that these unaudited consolidated financial statements be read in conjunction with the audited financial statements and the notes thereto included in the registrant’s Annual Report on Form 10-K for the year ended December 31, 2017 , which was filed with the SEC on March 1, 2018 . Use of Estimates The preparation of the unaudited consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes include fair value measurement of investment securities available-for-sale, reserve for loan and lease losses and purchase accounting. Accounting Pronouncements Adopted in 2018 In February 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2018-02, " Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." This ASU clarifies the accounting treatment of the reclassification of certain income tax effects within accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act. The Corporation elected to early adopt this guidance effective January 1, 2018 for all stranded tax effects resulting from tax reform and reclassified stranded tax effects, totaling $3.9 million , from accumulated other comprehensive income to retained earnings. The Corporation's policy for releasing income tax effects from accumulated other comprehensive income is to release such effects on an individual basis as each item is liquidated, sold or extinguished. See Note 10, "Accumulated Other Comprehensive (Loss) Income" for additional detail. In March 2017, the FASB issued ASU No. 2017-07, "Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." The amendments in this ASU require that an employer that sponsors defined benefit pension plans and other postretirement plans present the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. Other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. The Corporation adopted this guidance effective January 1, 2018 with retrospective application for prior period presentation. Effective January 1, 2018, components of net benefit income other than the service cost component are presented in the Corporation's statement of income in other noninterest expense rather than in salaries, benefits and commission expense. Prior period components of net benefit income other than the service cost component were reclassed to other noninterest expense in the Corporation's statement of income. 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 ASU addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The ASU requires equity investments to be measured at fair value with changes in fair value recognized in net income. At December 31, 2017 , the Corporation's equity portfolio had a carrying value of $1.1 million which included an unrealized net gain of $666 thousand . At December 31, 2017 , $433 thousand was recorded in accumulated other comprehensive income which represented the unrealized net gain, net of income taxes, based on the Corporation’s statutory tax rate as of December 31, 2017. The Corporation adopted this guidance effective January 1, 2018 with a cumulative-effect adjustment to the balance sheet as of January 1, 2018. The balance in accumulated other comprehensive income of $433 thousand was reclassified to retained earnings effective January 1, 2018. The carrying value of the equity securities, at January 1, 2018, did not change; however, any future increases or decreases in fair value is recorded as an increase or decrease to the carrying value and recognized in other noninterest income. During the three months ended March 31, 2018, the Corporation recognized a $4 thousand net loss on equity securities in other noninterest income. In May 2014, the FASB issued ASU No. 2014-09, " Revenue from Contracts with Customers (Topic 606)” and subsequent related updates. The Corporation adopted the guidance effective January 1, 2018 using the modified retrospective method though no adjustments were made to retained earnings as a result of the adoption. The Corporation provided expanded disclosures related to recognition of revenue from contracts with customers. See Note 14, "Revenue from Contracts with Customers." Recent Accounting Pronouncements Yet to Be Adopted In August 2017, the FASB issued ASU No. 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. " The amendments in this update expand and refine hedge accounting for both non-financial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. Additional hedging strategies permitted for hedge accounting include: hedges of contractually-specified price components of commodity purchases or sales, hedges of the benchmark rate component of the contractual coupon cash flows of fixed-rate assets or liabilities, hedges of the portion of a closed portfolio of prepayable assets not expected to prepay, and partial-term hedges of fixed-rate assets or liabilities. The ASU amends the presentation and disclosure requirements and changes how entities assess effectiveness. The ASU eliminates the requirement to separately measure and report hedge ineffectiveness and requires all items that affect earnings be presented in the same income statement line as the hedged items. After initial qualification, the new guidance permits a qualitative effectiveness assessment for certain hedges instead of a quantitative test, such as a regression analysis, if the entity can reasonably support an expectation of high effectiveness throughout the term of the hedge. An initial quantitative test to establish that the hedge relationship is highly effective is still required. The ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years for public business entities, or January 1, 2019 for the Corporation. Early adoption is permitted, including an interim period. The amended presentation and disclosure guidance is required only prospectively. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In March 2017, the FASB issued ASU No. 2017-08, “Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities.” This ASU shortens the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, or January 1, 2019 for the Corporation. Early adoption is permitted, including an interim period. This ASU is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In January 2017, the FASB issued ASU No. 2017-04, "Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment." This ASU eliminates Step 2 of the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. Under the new guidance, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. Public business entities that are SEC filers should adopt the amendments in this ASU for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, or for the Corporation's goodwill impairment test in 2020. Early adoption is permitted for goodwill impairment tests with measurement dates after January 1, 2017. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In June 2016, the FASB issued ASU No. 2016-13, “ Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This ASU requires businesses and other organizations to measure the current expected credit losses (CECL) on financial assets, such as loans, net investments in leases, certain debt securities, bond insurance and other receivables. The amendments affect entities holding financial assets and net investments in leases that are not accounted for at fair value through net income. Current GAAP requires an incurred loss methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The amendments in this ASU replace the incurred loss impairment methodology with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonableness and supportable information to inform credit loss estimates. An entity should apply the amendments through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (modified-retrospective approach). Acquired credit impaired loans for which the guidance in Accounting Standards Codification (ASC) Topic 310-30 has been previously applied should prospectively apply the guidance in this ASU. A prospective transition approach is required for debt securities for which an other-than-temporary impairment has been recognized before the effective date. The ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those years for public business entities that are SEC filers, or January 1, 2020 for the Corporation. The Corporation is in the process of evaluating the impact of the adoption of this guidance on the Corporation's financial statements; however, it is anticipated that the allowance will increase upon adoption of CECL and that the increased allowance level will decrease shareholders' equity and regulatory capital and ratios. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)" to revise 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. Disclosures will be required by lessees and lessors to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. Lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. An entity that elects to apply the practical expedients will, in effect, continue to account for leases that commence before the effective date in accordance with previous GAAP unless the lease is modified, except that lessees are required to recognize a right-of-use asset and a lease liability for all operating leases at each reporting date based on the present value of the remaining minimum rental payments that were tracked and disclosed under previous GAAP. The ASU is effective for the first interim period within annual periods beginning after December 15, 2018, or January 1, 2019, with early adoption permitted. The Corporation is in the process of evaluating the impact of the adoption of this guidance on the Corporation's financial statements; however, the adoption of this ASU will impact the balance sheet for the recording of assets and liabilities for operating leases; any initial or continued impact of the recording of assets will have a negative impact on all Corporation and Bank capital ratios under current regulatory guidance and possibly equity ratios.

Earnings per Share

Earnings per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share, Basic and Diluted [Abstract]
Earnings per Share	Earnings per Share The Corporation uses the two-class method to calculate earnings per share as the unvested restricted stock issued under the Corporation's equity incentive plans are participating shares with nonforfeitable rights to dividends. Under the two-class method, earnings per common share are computed by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding for the period. In applying the two-class method, undistributed earnings are allocated to both common shares and participating securities based on the number of weighted average shares outstanding during the period. The table also notes anti-dilutive options which are those options with weighted average exercise prices in excess of the weighted average market value for the periods presented. The following table sets forth the computation of basic and diluted earnings per share: Three Months Ended (Dollars and shares in thousands, except per share data) 2018 2017 Numerator: Net income $ 12,850 $ 10,856 Net income allocated to unvested restricted stock (97 ) (113 ) Net income allocated to common shares $ 12,753 $ 10,743 Denominator: Weighted average shares outstanding 29,355 26,631 Average unvested restricted stock (215 ) (286 ) Denominator for basic earnings per share— weighted-average shares outstanding 29,140 26,345 Effect of dilutive securities—employee stock options 94 103 Denominator for diluted earnings per share— adjusted weighted-average shares outstanding 29,234 26,448 Basic earnings per share $ 0.44 $ 0.41 Diluted earnings per share $ 0.44 $ 0.41 Average anti-dilutive options excluded from computation of diluted earnings per share 217 126

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following table shows the amortized cost and the estimated fair value of the held-to-maturity securities and available-for-sale securities at March 31, 2018 and December 31, 2017 , by contractual maturity within each type: At March 31, 2018 At December 31, 2017 (Dollars in thousands) Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Securities Held-to-Maturity U.S. government corporations and agencies: After 1 year to 5 years $ 6,996 $ — $ (169 ) $ 6,827 $ 6,995 $ — $ (77 ) $ 6,918 6,996 — (169 ) 6,827 6,995 — (77 ) 6,918 Residential mortgage-backed securities: After 5 years to 10 years 13,495 — (157 ) 13,338 8,944 — (51 ) 8,893 Over 10 years 63,902 — (1,092 ) 62,810 39,625 44 (160 ) 39,509 77,397 — (1,249 ) 76,148 48,569 44 (211 ) 48,402 Total $ 84,393 $ — $ (1,418 ) $ 82,975 $ 55,564 $ 44 $ (288 ) $ 55,320 Securities Available-for-Sale U.S. government corporations and agencies: Within 1 year $ 6,527 $ — $ (40 ) $ 6,487 $ 1,499 $ — $ (3 ) $ 1,496 After 1 year to 5 years 10,519 — (124 ) 10,395 15,590 — (125 ) 15,465 17,046 — (164 ) 16,882 17,089 — (128 ) 16,961 State and political subdivisions: Within 1 year 5,824 — (9 ) 5,815 2,721 1 (6 ) 2,716 After 1 year to 5 years 13,997 28 (58 ) 13,967 16,787 33 (44 ) 16,776 After 5 years to 10 years 49,935 508 (453 ) 49,990 54,846 897 (73 ) 55,670 Over 10 years 3,120 — (84 ) 3,036 3,120 15 — 3,135 72,876 536 (604 ) 72,808 77,474 946 (123 ) 78,297 Residential mortgage-backed securities: After 1 year to 5 years 3,969 2 (57 ) 3,914 3,913 12 (26 ) 3,899 After 5 years to 10 years 54,753 — (1,691 ) 53,062 51,428 5 (852 ) 50,581 Over 10 years 121,722 50 (4,163 ) 117,609 133,237 87 (2,383 ) 130,941 180,444 52 (5,911 ) 174,585 188,578 104 (3,261 ) 185,421 Collateralized mortgage obligations: After 5 years to 10 years 1,999 — (100 ) 1,899 2,103 — (82 ) 2,021 Over 10 years 1,485 — (16 ) 1,469 1,567 14 — 1,581 3,484 — (116 ) 3,368 3,670 14 (82 ) 3,602 Corporate bonds: Within 1 year 5,016 — (19 ) 4,997 10,006 — (5 ) 10,001 After 1 year to 5 years 23,845 13 (436 ) 23,422 24,885 20 (147 ) 24,758 After 5 years to 10 years 16,164 — (458 ) 15,706 16,669 71 (296 ) 16,444 Over 10 years 60,000 — (6,155 ) 53,845 60,000 — (4,027 ) 55,973 105,025 13 (7,068 ) 97,970 111,560 91 (4,475 ) 107,176 Money market mutual funds: No stated maturity 11,174 — — 11,174 5,985 — — 5,985 11,174 — — 11,174 5,985 — — 5,985 Equity securities: No stated maturity N/A N/A N/A N/A 410 667 (1 ) 1,076 N/A N/A N/A N/A 410 667 (1 ) 1,076 Total $ 390,049 $ 601 $ (13,863 ) $ 376,787 $ 404,766 $ 1,822 $ (8,070 ) $ 398,518 N/A - Not applicable as a result of adoption of ASU 2016-01 Expected maturities may differ from contractual maturities because debt issuers may have the right to call or prepay obligations without call or prepayment penalties and mortgage-backed securities typically prepay at a rate faster than contractually due. Securities with a carrying value of $362.5 million and $345.1 million at March 31, 2018 and December 31, 2017 , respectively, were pledged to secure public deposits and other contractual obligations. In addition, securities of $296 thousand and $1.8 million were pledged to secure credit derivatives and interest rate swaps at March 31, 2018 and December 31, 2017 , respectively. See Note 11, "Derivative Instruments and Hedging Activities" for additional information. The following table presents information related to sales of securities available-for-sale during the three months ended March 31, 2018 and 2017 : Three Months Ended March 31, (Dollars in thousands) 2018 2017 Securities available-for-sale: Proceeds from sales $ 1,010 $ 1,762 Gross realized gains on sales 10 15 Tax expense related to net realized gains on sales 2 5 At March 31, 2018 and December 31, 2017 , there were no investments in any single non-federal issuer representing more than 10% of shareholders’ equity. The following table shows the fair value of securities that were in an unrealized loss position at March 31, 2018 and December 31, 2017 by the length of time those securities were in a continuous loss position. For the investment securities in an unrealized loss position, the Corporation has concluded, based on its analysis, that the unrealized losses are primarily caused by the movement of interest rates and current market conditions. The contractual terms of these investments do not permit the issuer to settle the securities at a price less than the par value of the investment. It is more likely than not that the Corporation will not be required to sell the investments before a recovery of carrying value. Less than Twelve Months Total (Dollars in thousands) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized At March 31, 2018 Securities Held-to-Maturity U.S. government corporations and agencies $ 6,826 $ (169 ) $ — $ — $ 6,826 $ (169 ) Residential mortgage-backed securities 76,149 (1,249 ) — — 76,149 (1,249 ) Total $ 82,975 $ (1,418 ) $ — $ — $ 82,975 $ (1,418 ) Securities Available-for-Sale U.S. government corporations and agencies $ 5,155 $ (59 ) $ 11,727 $ (105 ) $ 16,882 $ (164 ) State and political subdivisions 35,367 (553 ) 6,310 (51 ) 41,677 (604 ) Residential mortgage-backed securities 36,274 (819 ) 134,167 (5,092 ) 170,441 (5,911 ) Collateralized mortgage obligations 1,469 (16 ) 1,899 (100 ) 3,368 (116 ) Corporate bonds 23,242 (384 ) 71,714 (6,684 ) 94,956 (7,068 ) Total $ 101,507 $ (1,831 ) $ 225,817 $ (12,032 ) $ 327,324 $ (13,863 ) At December 31, 2017 Securities Held-to-Maturity U.S. government corporations and agencies $ 6,919 $ (77 ) $ — $ — $ 6,919 $ (77 ) Residential mortgage-backed securities 40,881 (211 ) — — 40,881 (211 ) Total $ 47,800 $ (288 ) $ — $ — $ 47,800 $ (288 ) Securities Available-for-Sale U.S. government corporations and agencies $ 5,213 $ (38 ) $ 11,749 $ (90 ) $ 16,962 $ (128 ) State and political subdivisions 18,457 (91 ) 6,332 (32 ) 24,789 (123 ) Residential mortgage-backed securities 32,217 (210 ) 141,371 (3,051 ) 173,588 (3,261 ) Collateralized mortgage obligations — — 2,021 (82 ) 2,021 (82 ) Corporate bonds 18,464 (1,016 ) 71,957 (3,459 ) 90,421 (4,475 ) Equity securities — (1 ) 4 — 4 (1 ) Total $ 74,351 $ (1,356 ) $ 233,434 $ (6,714 ) $ 307,785 $ (8,070 ) At March 31, 2018 , gross unrealized losses for securities in an unrealized loss position for twelve months or longer, totaled $12.0 million . Four federal agency bonds, thirteen investment grade corporate bonds, 105 federal agency residential mortgage securities, and seven investment grade municipal bonds had respective unrealized loss positions of $105 thousand , $6.7 million , $5.2 million and $51 thousand , respectively. The fair value of these 129 securities fluctuate with changes in market conditions which for these underlying securities is primarily due to changes in the interest rate environment. The Corporation does not intend to sell the securities in an unrealized loss position and is unlikely to be required to sell these securities before a recovery of fair value, which may be maturity. Upon review of the attributes of the individual securities, the Corporation concluded these securities were not other-than-temporarily impaired. The Corporation did not recognize any other-than-temporary impairment charges on debt securities for the three months ended March 31, 2018 and 2017 . In conjunction with the adoption of ASU 2016-01, the Corporation recognized a $4 thousand net loss on equity securities during the three months ended March 31, 2018 in other noninterest income and the net unrealized loss on equity securities held at March 31, 2018 was $4 thousand . See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2018" for additional information.

Loans and Leases

Loans and Leases	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans and Leases	Loans and Leases Summary of Major Loan and Lease Categories At March 31, 2018 (Dollars in thousands) Originated Acquired Total Commercial, financial and agricultural $ 856,250 $ 51,688 $ 907,938 Real estate-commercial 1,293,496 291,324 1,584,820 Real estate-construction 180,681 4,452 185,133 Real estate-residential secured for business purpose 251,188 82,173 333,361 Real estate-residential secured for personal purpose 278,990 58,183 337,173 Real estate-home equity secured for personal purpose 172,121 11,347 183,468 Loans to individuals 28,112 143 28,255 Lease financings 129,740 — 129,740 Total loans and leases held for investment, net of deferred income $ 3,190,578 $ 499,310 $ 3,689,888 Unearned lease income, included in the above table $ (14,153 ) $ — $ (14,153 ) Net deferred costs, included in the above table 4,436 — 4,436 Overdraft deposits included in the above table 396 — 396 At December 31, 2017 (Dollars in thousands) Originated Acquired Total Commercial, financial and agricultural $ 833,100 $ 63,111 $ 896,211 Real estate-commercial 1,235,681 306,460 1,542,141 Real estate-construction 171,244 4,592 175,836 Real estate-residential secured for business purpose 250,800 91,167 341,967 Real estate-residential secured for personal purpose 260,654 60,920 321,574 Real estate-home equity secured for personal purpose 171,884 12,386 184,270 Loans to individuals 28,156 144 28,300 Lease financings 129,768 — 129,768 Total loans and leases held for investment, net of deferred income $ 3,081,287 $ 538,780 $ 3,620,067 Unearned lease income, included in the above table $ (14,243 ) $ — $ (14,243 ) Net deferred costs, included in the above table 4,669 — 4,669 Overdraft deposits included in the above table 222 — 222 Overdraft deposits are re-classified as loans and are included in the total loans and leases on the balance sheet. The carrying amount of acquired loans at March 31, 2018 totaled $499.3 million , including $400.1 million of loans from the Fox Chase acquisition and $99.2 million from the Valley Green Bank acquisition. At March 31, 2018 , loans acquired with deteriorated credit quality, or acquired credit impaired loans, totaled $1.5 million representing $733 thousand from the Fox Chase acquisition and $792 thousand from the Valley Green Bank acquisition. Acquired credit impaired loans are accounted for in accordance with Accounting Standards Codification (ASC) Topic 310-30. The outstanding principal balance and carrying amount for acquired credit impaired loans at March 31, 2018 and December 31, 2017 were as follows: (Dollars in thousands) At March 31, 2018 At December 31, 2017 Outstanding principal balance $ 2,197 $ 2,325 Carrying amount 1,525 1,583 Allowance for loan losses — — The following table presents the changes in accretable yield on acquired credit impaired loans: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Beginning of period $ 11 $ 50 Reclassification from nonaccretable discount 81 107 Accretable discount amortized to interest income (87 ) (116 ) Disposals — (4 ) End of period $ 5 $ 37 Age Analysis of Past Due Loans and Leases The following presents, by class of loans and leases, an aging of past due loans and leases, loans and leases which are current and the recorded investment in loans and leases 90 days or more past due which are accruing interest at March 31, 2018 and December 31, 2017 : (Dollars in thousands) 30-59 60-89 90 Days Total Current Acquired Credit Impaired Total Loans Recorded At March 31, 2018 Commercial, financial and agricultural $ 663 $ 187 $ 2,763 $ 3,613 $ 903,947 $ 378 $ 907,938 $ — Real estate—commercial real estate and construction: Commercial real estate 1,564 174 4,347 6,085 1,578,379 356 1,584,820 — Construction 1,168 — — 1,168 183,965 — 185,133 — Real estate—residential and home equity: Residential secured for business purpose 1,164 — 962 2,126 330,649 586 333,361 — Residential secured for personal purpose 3,575 — 826 4,401 332,567 205 337,173 569 Home equity secured for personal purpose 1,335 74 1,110 2,519 180,949 — 183,468 955 Loans to individuals 153 53 644 850 27,405 — 28,255 644 Lease financings 1,225 635 127 1,987 127,753 — 129,740 127 Total $ 10,847 $ 1,123 $ 10,779 $ 22,749 $ 3,665,614 $ 1,525 $ 3,689,888 $ 2,295 At December 31, 2017 Commercial, financial and agricultural $ 2,182 $ 1,440 $ 1,509 $ 5,131 $ 890,658 $ 422 $ 896,211 $ — Real estate—commercial real estate and construction: Commercial real estate 733 548 1,410 2,691 1,539,094 356 1,542,141 — Construction 1,970 — 365 2,335 173,501 — 175,836 — Real estate—residential and home equity: Residential secured for business purpose 1,651 315 1,355 3,321 338,061 585 341,967 162 Residential secured for personal purpose 4,368 1,118 23 5,509 315,845 220 321,574 — Home equity secured for personal purpose 1,414 333 464 2,211 182,059 — 184,270 148 Loans to individuals 221 139 195 555 27,745 — 28,300 195 Lease financings 1,143 392 1,855 3,390 126,378 — 129,768 256 Total $ 13,682 $ 4,285 $ 7,176 $ 25,143 $ 3,593,341 $ 1,583 $ 3,620,067 $ 761 Nonperforming Loans and Leases The following presents, by class of loans and leases, nonperforming loans and leases at March 31, 2018 and December 31, 2017 . Nonperforming loans exclude acquired credit impaired loans from Fox Chase and Valley Green. At March 31, 2018 At December 31, 2017 (Dollars in thousands) Nonaccrual Accruing Loans and Total Nonperforming Nonaccrual Accruing Loans and Total Nonperforming Commercial, financial and agricultural $ 4,192 $ 796 $ — $ 4,988 $ 4,448 $ 921 $ — $ 5,369 Real estate—commercial real estate and construction: Commercial real estate 19,014 — — 19,014 4,285 10,266 — 14,551 Construction — — — — 365 — — 365 Real estate—residential and home equity: Residential secured for business purpose 1,565 195 — 1,760 2,843 206 162 3,211 Residential secured for personal purpose 594 41 569 1,204 466 42 — 508 Home equity secured for personal purpose 649 — 955 1,604 511 — 148 659 Loans to individuals — — 644 644 — — 195 195 Lease financings 1,680 — 127 1,807 1,599 — 256 1,855 Total $ 27,694 $ 1,032 $ 2,295 $ 31,021 $ 14,517 $ 11,435 $ 761 $ 26,713 * Includes nonaccrual troubled debt restructured loans and lease modifications of $1.7 million and $2.5 million at March 31, 2018 and December 31, 2017 , respectively. Accruing troubled debt restructuring loans of $11.4 million at December 31, 2017 includes balances of $10.3 million related to one borrower which were classified as troubled debt restructurings as the related loans were granted amortization period extensions. These troubled debt restructured loans were returned to performing status during the first quarter of 2018 as the borrower was in compliance with the modified terms of the restructurings for the required time period. At March 31, 2018, commercial real estate nonaccrual loans and leases includes a $12.3 million loan that was placed on nonaccrual status during the current quarter. A specific reserve of $656 thousand was recorded for this loan as of March 31, 2018. Credit Quality Indicators The following tables present by class, the recorded investment in loans and leases held for investment by credit quality indicator at March 31, 2018 and December 31, 2017 . The Corporation employs a ten (10) grade risk rating system related to the credit quality of commercial loans and residential real estate loans secured for a business purpose of which the first six categories are pass categories (credits not adversely rated). The following is a description of the internal risk ratings and the likelihood of loss related to each risk rating. Loans with a relationship balance of less than $1 million are reviewed on a performance basis, with the primary monitored metrics being delinquency (60 days or more past due) and revolving stagnancy. Loans with relationships greater than $1 million are reviewed at least annually. Loan relationships exceeding $15 million or classified as special mention or substandard are reviewed at least quarterly, or more frequently based on management’s discretion. 1. Cash Secured—No credit risk 2. Fully Secured—Negligible credit risk 3. Strong—Minimal credit risk 4. Satisfactory—Nominal credit risk 5. Acceptable—Moderate credit risk 6. Pre-Watch—Marginal, but stable credit risk 7. Special Mention—Potential weakness 8. Substandard—Well-defined weakness 9. Doubtful—Collection in-full improbable 10. Loss—Considered uncollectible Commercial Credit Exposure Credit Risk by Internally Assigned Grades The following table presents classifications for originated loans: (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Total At March 31, 2018 Grade: 1. Cash secured/ 2. Fully secured $ 2,257 $ 399 $ 17,935 $ — $ 20,591 3. Strong 15,010 1,779 — — 16,789 4. Satisfactory 19,252 25,858 — 271 45,381 5. Acceptable 605,721 1,001,237 73,203 215,138 1,895,299 6. Pre-watch 196,721 239,815 87,030 30,898 554,464 7. Special Mention 6,939 13,117 2,513 1,024 23,593 8. Substandard 10,350 11,291 — 3,857 25,498 9. Doubtful — — — — — 10.Loss — — — — — Total $ 856,250 $ 1,293,496 $ 180,681 $ 251,188 $ 2,581,615 At December 31, 2017 Grade: 1. Cash secured/ 2. Fully secured $ 2,521 $ — $ 20,420 $ — $ 22,941 3. Strong 9,206 1,821 — — 11,027 4. Satisfactory 30,283 26,950 — 274 57,507 5. Acceptable 593,205 960,258 76,899 215,750 1,846,112 6. Pre-watch 179,990 209,844 72,168 29,738 491,740 7. Special Mention 4,027 12,974 1,392 296 18,689 8. Substandard 13,868 23,834 365 4,742 42,809 9. Doubtful — — — — — 10.Loss — — — — — Total $ 833,100 $ 1,235,681 $ 171,244 $ 250,800 $ 2,490,825 The following table presents classifications for acquired loans: (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Total At March 31, 2018 Grade: 1. Cash secured/ 2. Fully secured $ 1,125 $ — $ — $ — $ 1,125 3. Strong — — — — — 4. Satisfactory 118 463 — — 581 5. Acceptable 39,143 173,731 — 67,954 280,828 6. Pre-watch 8,496 97,057 4,452 12,738 122,743 7. Special Mention 891 4,504 — — 5,395 8. Substandard 1,915 15,569 — 1,481 18,965 9. Doubtful — — — — — 10.Loss — — — — — Total $ 51,688 $ 291,324 $ 4,452 $ 82,173 $ 429,637 December 31, 2017 Grade: 1. Cash secured/ 2. Fully secured $ 1,120 $ — $ — $ — $ 1,120 3. Strong — — — — — 4. Satisfactory 125 482 — — 607 5. Acceptable 49,949 183,490 — 73,402 306,841 6. Pre-watch 6,183 98,977 4,592 15,861 125,613 7. Special Mention 1,007 17,028 — — 18,035 8. Substandard 4,727 6,483 — 1,904 13,114 9. Doubtful — — — — — 10.Loss — — — — — Total $ 63,111 $ 306,460 $ 4,592 $ 91,167 $ 465,330 Credit Exposure—Real Estate—Residential Secured for Personal Purpose, Real Estate—Home Equity Secured for Personal Purpose, Loans to individuals, Lease Financing Credit Risk Profile by Payment Activity The Corporation monitors the credit risk profile by payment activity for the following classifications of loans and leases: residential real estate loans secured for a personal purpose, home equity loans secured for a personal purpose, loans to individuals and lease financings. Nonperforming loans and leases are loans and leases past due 90 days or more, loans and leases on nonaccrual of interest and troubled debt restructured loans and lease modifications. Performing loans and leases are reviewed only if the loan becomes 60 days or more past due. Nonperforming loans and leases are reviewed monthly. Performing loans and leases have a nominal to moderate risk of loss. The following table presents classifications for originated loans: (Dollars in thousands) Real Estate— Real Estate— Loans to Lease Total At March 31, 2018 Performing $ 278,357 $ 171,597 $ 27,468 $ 127,933 $ 605,355 Nonperforming 633 524 644 1,807 3,608 Total $ 278,990 $ 172,121 $ 28,112 $ 129,740 $ 608,963 At December 31, 2017 Performing $ 260,589 $ 171,527 $ 27,961 $ 127,913 $ 587,990 Nonperforming 65 357 195 1,855 2,472 Total $ 260,654 $ 171,884 $ 28,156 $ 129,768 $ 590,462 The following table presents classifications for acquired loans: (Dollars in thousands) Real Estate— Real Estate— Loans to Lease Total At March 31, 2018 Performing $ 57,612 $ 10,267 $ 143 $ — $ 68,022 Nonperforming 571 1,080 — — 1,651 Total $ 58,183 $ 11,347 $ 143 $ — $ 69,673 At December 31, 2017 Performing $ 60,477 $ 12,084 $ 144 $ — $ 72,705 Nonperforming 443 302 — — 745 Total $ 60,920 $ 12,386 $ 144 $ — $ 73,450 Reserve for Loan and Lease Losses and Recorded Investment in Loans and Leases The following presents, by portfolio segment, a summary of the activity in the reserve for loan and lease losses for the three months ended March 31, 2018 and 2017 : (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Loans to Lease Unallocated Total Three Months Ended March 31, 2018 Reserve for loan and lease losses: Beginning balance $ 6,742 $ 9,839 $ 1,661 $ 1,754 $ 373 $ 1,132 $ 54 $ 21,555 Charge-offs (601 ) (40 ) — — (92 ) (136 ) N/A (869 ) Recoveries 226 73 251 57 30 34 N/A 671 Provision (recovery of provision) 575 1,306 (41 ) 96 61 49 6 2,052 Provision for acquired credit impaired loans — — — 1 — — — 1 Ending balance $ 6,942 $ 11,178 $ 1,871 $ 1,908 $ 372 $ 1,079 $ 60 $ 23,410 Three Months Ended March 31, 2017 Reserve for loan and lease losses: Beginning balance $ 7,037 $ 7,505 $ 774 $ 993 $ 364 $ 788 $ 38 $ 17,499 Charge-offs (178 ) — (42 ) (94 ) (126 ) (257 ) N/A (697 ) Recoveries 187 3 10 17 35 29 N/A 281 Provision (recovery of provision) 844 116 603 82 62 769 (34 ) 2,442 Provision for acquired credit impaired loans — — — 3 — — — 3 Ending balance $ 7,890 $ 7,624 $ 1,345 $ 1,001 $ 335 $ 1,329 $ 4 $ 19,528 N/A – Not applicable The following presents, by portfolio segment, a summary of the balance in the reserve for loan and lease losses disaggregated on the basis of impairment method and the recorded investment in loans and leases disaggregated on the basis of impairment method at March 31, 2018 and 2017 : (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Loans to Lease Unallocated Total At March 31, 2018 Reserve for loan and lease losses: Ending balance: individually evaluated for impairment $ 34 $ 684 $ 14 $ — $ — $ — N/A $ 732 Ending balance: collectively evaluated for impairment 6,776 10,378 1,815 1,908 372 1,079 60 22,388 Ending balance: acquired credit impaired loans evaluated for impairment 132 116 42 — — — — 290 Total ending balance $ 6,942 $ 11,178 $ 1,871 $ 1,908 $ 372 $ 1,079 $ 60 $ 23,410 Loans and leases held for investment: Ending balance: individually evaluated for impairment $ 6,560 $ 30,573 $ 2,173 $ 1,284 $ — $ 1,250 $ 41,840 Ending balance: collectively evaluated for impairment 849,690 1,441,709 249,015 449,827 28,112 128,490 3,146,843 Loans measured at fair value — 1,895 — — — — 1,895 Acquired non-credit impaired loans 51,310 295,420 81,587 69,325 143 — 497,785 Acquired credit impaired loans 378 356 586 205 — — 1,525 Total ending balance $ 907,938 $ 1,769,953 $ 333,361 $ 520,641 $ 28,255 $ 129,740 $ 3,689,888 At March 31, 2017 Reserve for loan and lease losses: Ending balance: individually evaluated for impairment $ 8 $ 26 $ 364 $ 1 $ — $ 580 N/A $ 979 Ending balance: collectively evaluated for impairment 7,882 7,598 981 1,000 335 749 4 18,549 Total ending balance $ 7,890 $ 7,624 $ 1,345 $ 1,001 $ 335 $ 1,329 $ 4 $ 19,528 Loans and leases held for investment: Ending balance: individually evaluated for impairment $ 9,524 $ 21,658 $ 5,178 $ 1,054 $ — $ 5,021 $ 42,435 Ending balance: collectively evaluated for impairment 740,818 1,160,406 175,652 373,852 27,915 127,843 2,606,486 Loans measured at fair value — 2,092 — — — — 2,092 Acquired non-credit impaired loans 90,069 395,838 110,820 87,412 148 — 684,287 Acquired credit impaired loans 560 5,261 582 213 — — 6,616 Total ending balance $ 840,971 $ 1,585,255 $ 292,232 $ 462,531 $ 28,063 $ 132,864 $ 3,341,916 N/A – Not applicable The Corporation records a provision for loan loss for the acquired non-impaired loans only when additional deterioration of the portfolio is identified over the projections utilized in the initial fair value analysis. After the acquisition measurement period, the present value of any decreases in expected cash flows of acquired credit impaired loans will generally result in an impairment charge recorded as a provision for loan loss, resulting in an increase to the allowance. Impaired Loans (excludes Lease Financings) The following presents, by class of loans, the recorded investment and unpaid principal balance of impaired loans, the amounts of the impaired loans for which there is not a reserve for credit losses and the amounts for which there is a reserve for credit losses at March 31, 2018 and December 31, 2017 . The impaired loans exclude acquired credit impaired loans. At March 31, 2018 At December 31, 2017 (Dollars in thousands) Recorded Unpaid Related Recorded Unpaid Related Impaired loans with no related reserve recorded: Commercial, financial and agricultural $ 4,683 $ 5,518 $ 7,019 $ 8,301 Real estate—commercial real estate 17,738 18,564 15,621 16,507 Real estate—construction — — 365 365 Real estate—residential secured for business purpose 1,697 1,819 3,430 4,620 Real estate—residential secured for personal purpose 635 691 508 566 Real estate—home equity secured for personal purpose 649 674 511 523 Total impaired loans with no related reserve recorded $ 25,402 $ 27,266 $ 27,454 $ 30,882 Impaired loans with a reserve recorded: Commercial, financial and agricultural $ 1,877 $ 2,336 $ 34 $ 60 $ 60 $ 31 Real estate—commercial real estate 12,835 12,929 684 933 933 99 Real estate—residential secured for business purpose 476 549 14 35 37 1 Total impaired loans with a reserve recorded $ 15,188 $ 15,814 $ 732 $ 1,028 $ 1,030 $ 131 Total impaired loans: Commercial, financial and agricultural $ 6,560 $ 7,854 $ 34 $ 7,079 $ 8,361 $ 31 Real estate—commercial real estate 30,573 31,493 684 16,554 17,440 99 Real estate—construction — — — 365 365 — Real estate—residential secured for business purpose 2,173 2,368 14 3,465 4,657 1 Real estate—residential secured for personal purpose 635 691 — 508 566 — Real estate—home equity secured for personal purpose 649 674 — 511 523 — Total impaired loans $ 40,590 $ 43,080 $ 732 $ 28,482 $ 31,912 $ 131 Impaired loans include nonaccrual loans, accruing troubled debt restructured loans and other accruing impaired loans for which it is probable that not all principal and interest payments due will be collectible in accordance with the original contractual terms. These loans are individually measured to determine the amount of potential impairment. The loans are reviewed for impairment based on the fair value of the collateral for collateral dependent loans and for certain loans based on discounted cash flows using the loans’ initial effective interest rates. Impaired loans include other accruing impaired loans of $3.3 million and $4.1 million at March 31, 2018 and December 31, 2017 , respectively. Specific reserves on other accruing impaired loans were $28 thousand and $99 thousand at March 31, 2018 and December 31, 2017 , respectively. The following presents by class of loans, the average recorded investment in impaired loans and an analysis of interest on impaired loans. A loan may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. Therefore, interest income on accruing impaired loans is recognized using the accrual method. Three Months Ended March 31, 2018 Three Months Ended March 31, 2017 (Dollars in thousands) Average Interest Additional Average Interest Additional Commercial, financial and agricultural $ 7,703 $ 40 $ 77 $ 11,418 $ 43 $ 85 Real estate—commercial real estate 19,916 172 287 23,949 233 73 Real estate—construction 183 — 2 — — — Real estate—residential secured for business purpose 2,217 5 24 4,268 16 44 Real estate—residential secured for personal purpose 544 1 11 552 — 8 Real estate—home equity secured for personal purpose 549 — 8 525 — 5 Total $ 31,112 $ 218 $ 409 $ 40,712 $ 292 $ 215 * Includes interest income recognized on a cash basis for nonaccrual loans of $6 thousand and $1 thousand for the three months ended March 31, 2018 and 2017 , respectively, and interest income recognized on the accrual method for accruing impaired loans of $212 thousand and $291 thousand for the three months ended March 31, 2018 and 2017 , respectively. Impaired Leases The Corporation had impaired leases of $1.3 million at March 31, 2018 and December 31, 2017 with no related reserves. See discussion in Reserve for Loan and Lease Losses and Recorded Investment in Loans and Leases. Troubled Debt Restructured Loans There were no loans restructured during the three months ended March 31, 2018 and March 31, 2017 . The Corporation grants concessions to existing borrowers primarily related to extensions of interest-only payment periods and an occasional payment modification. These modifications typically are for up to one year . The goal when restructuring a credit is to establish a reasonable period of time to provide cash flow relief to customers experiencing cash flow difficulties. Accruing troubled debt restructured loans are primarily comprised of loans on which interest is being accrued under the restructured terms, and the loans are current or less than ninety days past due. The following presents, by class of loans, information regarding accruing and nonaccrual troubled debt restructured loans, for which there were payment defaults within twelve months of the restructuring date: Three Months Ended March 31, 2018 2017 (Dollars in thousands) Number Recorded Number Recorded Accruing Troubled Debt Restructured Loans: Total — $ — — $ — Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural 1 $ 953 — $ — Total 1 $ 953 — $ — The following presents, by class of loans, information regarding consumer mortgages collateralized by residential real estate property that are in the process of foreclosure at March 31, 2018 and December 31, 2017 : (Dollars in thousands) At March 31, 2018 At December 31, 2017 Real estate-residential secured for personal purpose $ 317 $ 31 Real estate-home equity secured for personal purpose 79 — Total $ 396 $ 31 The following presents foreclosed residential real estate property included in other real estate owned at March 31, 2018 and December 31, 2017 . (Dollars in thousands) At March 31, 2018 At December 31, 2017 Foreclosed residential real estate $ 80 $ 80

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The Corporation has covenants not to compete agreements with certain individuals, core deposit and customer-related intangibles and servicing rights, which are not deemed to have an indefinite life and therefore will continue to be amortized over their useful life using the present value of projected cash flows. The Corporation also has goodwill which is deemed to be an indefinite intangible asset and is not amortized. Changes in the carrying amount of the Corporation's goodwill by business segment for the three months ended March 31, 2018 were as follows: (Dollars in thousands) Banking Wealth Management Insurance Consolidated Balance at December 31, 2017 $ 138,476 $ 15,434 $ 18,649 $ 172,559 Addition to goodwill from acquisitions — — — — Balance at March 31, 2018 $ 138,476 $ 15,434 $ 18,649 $ 172,559 The following table reflects the components of intangible assets at the dates indicated: At March 31, 2018 At December 31, 2017 (Dollars in thousands) Gross Carrying Amount Accumulated Amortization and Fair Value Adjustments Net Carrying Amount Gross Carrying Amount Accumulated Amortization and Fair Value Adjustments Net Carrying Amount Amortized intangible assets: Covenants not to compete $ 710 $ 645 $ 65 $ 710 $ 580 $ 130 Core deposit intangibles 6,788 2,399 4,389 6,788 2,135 4,653 Customer related intangibles 12,381 10,094 2,287 12,381 9,828 2,553 Servicing rights 16,192 9,587 6,605 15,855 9,282 6,573 Total amortized intangible assets $ 36,071 $ 22,725 $ 13,346 $ 35,734 $ 21,825 $ 13,909 The estimated aggregate amortization expense for covenants not to compete and core deposit and customer related intangibles for the remainder of 2018 and the succeeding fiscal years is as follows: Year (Dollars in thousands) Amount Remainder of 2018 $ 1,519 2019 1,565 2020 1,200 2021 923 2022 666 Thereafter 868 The Corporation has originated mortgage servicing rights, which are included in other intangible assets on the consolidated balance sheets. Mortgage servicing rights are amortized in proportion to, and over the period of, estimated net servicing income on a basis similar to the interest method and an accelerated amortization method for loan payoffs. Mortgage servicing rights are subject to impairment testing on a quarterly basis. The aggregate fair value of these rights was $11.2 million at March 31, 2018 and $10.0 million at December 31, 2017 . The fair value of mortgage servicing rights was determined using a discount rate of 10.0% at March 31, 2018 and December 31, 2017 . The Corporation also records servicing rights on small business administration (SBA) loans. The value of these servicing rights was $20 thousand and $21 thousand at March 31, 2018 and December 31, 2017 , respectively. Changes in the servicing rights balance are summarized as follows: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Beginning of period $ 6,573 $ 6,485 Servicing rights capitalized 337 343 Amortization of servicing rights (305 ) (326 ) Changes in valuation allowance — — End of period $ 6,605 $ 6,502 Residential mortgage and SBA loans serviced for others $ 1,012,677 $ 972,617 The estimated amortization expense of servicing rights for the remainder of 2018 and the succeeding fiscal years is as follows: Year (Dollars in thousands) Amount Remainder of 2018 $ 874 2019 774 2020 684 2021 602 2022 529 Thereafter 3,142

Deposits

Deposits	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Deposits	Deposits Deposits and their respective weighted average interest rate at March 31, 2018 and December 31, 2017 consist of the following: At March 31, 2018 At December 31, 2017 Weighted Average Interest Rate Amount Weighted Average Interest Rate Amount (Dollars in thousands) Noninterest-bearing deposits — % $ 1,002,021 — % $ 1,040,026 Demand deposits 0.51 1,159,737 0.43 1,109,438 Savings deposits 0.30 815,032 0.26 830,706 Time deposits 1.18 520,503 1.12 574,749 Total 0.41 % $ 3,497,293 0.38 % $ 3,554,919 The aggregate amount of time deposits in denominations of $100 thousand or more was $181.0 million at March 31, 2018 and $250.0 million at December 31, 2017 . Deposits are insured up to applicable limits by the Deposit Insurance Fund of the FDIC. Deposit insurance per account owner is currently up to $250 thousand. The aggregate amount of time deposits in denominations over $250 thousand was $53.2 million at March 31, 2018 and $118.4 million at December 31, 2017 . At March 31, 2018 , the scheduled maturities of time deposits are as follows: Year (Dollars in thousands) Amount Remainder of 2018 $ 207,697 2019 183,979 2020 65,427 2021 19,000 2022 32,457 Thereafter 11,943 Total $ 520,503

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Borrowings	Borrowings The following is a summary of borrowings by type. Short-term borrowings consist of overnight borrowings and term borrowings with an original maturity of one year or less. The long-term debt balances and weighted average interest rates include purchase accounting fair value adjustments, net of related amortization, from the Fox Chase acquisition. At March 31, 2018 At December 31, 2017 (Dollars in thousands) Balance at End of Period Weighted Average Interest Rate at End of Period Balance at End of Period Weighted Average Interest Rate at End of Period Short-term borrowings: FHLB borrowings $ 148,285 1.87 % $ 30,225 1.54 % Federal funds purchased 50,000 1.80 55,000 1.56 Customer repurchase agreements 18,141 0.05 20,206 0.05 Long-term debt: FHLB advances $ 125,021 1.73 % $ 125,036 1.73 % Security repurchase agreements 30,671 1.77 30,792 1.52 Subordinated notes $ 94,392 5.34 % $ 94,331 5.35 % The Corporation, through the Bank, has a credit facility with the Federal Home Loan Bank (FHLB) with a maximum borrowing capacity of approximately $1.5 billion . Advances from the FHLB are collateralized by a blanket floating lien on all first mortgage loans of the Bank, FHLB capital stock owned by the Bank and any funds on deposit with the FHLB. At March 31, 2018 and December 31, 2017 , the Bank had outstanding short-term letters of credit with the FHLB totaling $198.0 million and $234.2 million , respectively, which were utilized to collateralize public funds deposits. The maximum borrowing capacity with the FHLB changes as a function of the Bank’s qualifying collateral assets as well as the FHLB’s internal credit rating of the Bank. The Corporation, through the Bank, maintains uncommitted federal fund credit lines with several correspondent banks totaling $367.0 million at March 31, 2018 and December 31, 2017 . Future availability under these lines is subject to the prerogatives of the granting banks and may be withdrawn at will. The Corporation, through the Bank, holds collateral at the Federal Reserve Bank of Philadelphia in order to access their Discount Window Lending program. The collateral consisting of investment securities was valued at $68.5 million and $52.0 million at March 31, 2018 and December 31, 2017 , respectively. At March 31, 2018 and December 31, 2017 , the Corporation had no outstanding borrowings under this program. The Corporation has a $10.0 million line of credit with a correspondent bank. At March 31, 2018 , the Corporation had no outstanding borrowings under this line. Long-term advances with the FHLB of Pittsburgh mature as follows: (Dollars in thousands) As of March 31, 2018 Weighted Average Rate Remainder of 2018 $ 10,021 0.70 % 2019 10,000 1.35 2020 40,000 1.70 2021 55,000 1.94 2022 10,000 2.09 Thereafter — — Total $ 125,021 1.73 % Long-term debt under security repurchase agreements with large commercial banks mature as follows: (Dollars in thousands) As of March 31, 2018 Weighted Average Rate Remainder of 2018 $ 10,138 1.29 % 2019 10,228 2.01 2020 10,305 2.01 2021 — — 2022 — — Thereafter — — Total $ 30,671 1.77 % Long-term debt under security repurchase agreements totaling $25.6 million are variable based on the one-month LIBOR rate plus a spread. One borrowing for $5.1 million has a fixed interest rate and may be called by the lender based on the underlying agreement.

Retirement Plans and Other Post

Retirement Plans and Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Retirement Plans and Other Postretirement Benefits	Retirement Plans and Other Postretirement Benefits Substantially all employees who were hired before December 8, 2009 are covered by a noncontributory retirement plan. Employees hired on or after December 8, 2009 are not eligible to participate in the noncontributory retirement plan. The Corporation also provides supplemental executive retirement benefits to certain former executives, a portion of which is in excess of limits imposed on qualified plans by federal tax law; these plans are non-qualified benefit plans. These non-qualified benefit plans are not offered to new participants; all current participants are now retired. Information on these plans are aggregated and reported under “Retirement Plans” within this footnote. The Corporation also provides certain postretirement healthcare and life insurance benefits for retired employees. Information on these benefits is reported under “Other Postretirement Benefits” within this footnote. The Corporation sponsors a Supplemental Non-Qualified Pension Plan, which was established in 1981 prior to the existence of a 401(k) deferred salary savings plan, employee stock purchase plan and long-term incentive plans and therefore is not offered to new participants; all current participants are now retired. Components of net periodic benefit cost (income) were as follows: Three Months Ended March 31, 2018 2017 2018 2017 (Dollars in thousands) Retirement Plans Other Post Retirement Service cost $ 140 $ 151 $ 22 $ 12 Interest cost 441 465 23 29 Expected return on plan assets (796 ) (753 ) — — Amortization of net actuarial loss 280 288 1 11 Accretion of prior service cost (71 ) (70 ) — — Net periodic benefit (income) cost $ (6 ) $ 81 $ 46 $ 52 The components of net periodic benefit cost other than the service cost component are included in other noninterest expense in the consolidated statements of income. The Corporation previously disclosed in its financial statements for the year ended December 31, 2017 that it expected to make contributions of $158 thousand to its non-qualified retirement plans and $80 thousand to its other postretirement benefit plans in 2018 . During the three months ended March 31, 2018 , the Corporation contributed $40 thousand to its non-qualified retirement plans and $27 thousand to its other postretirement plans. During the three months ended March 31, 2018 , $649 thousand was paid to participants from the retirement plans and $27 thousand was paid to participants from the other postretirement plans.

Stock-Based Incentive Plan

Stock-Based Incentive Plan	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Incentive Plan	Stock-Based Incentive Plan The Corporation has a shareholder approved 2013 Long-Term Incentive Plan, which replaced the expired 2003 Long-Term Incentive Plan. Under the 2013 Long-Term Incentive Plan, the Corporation may grant up to 3,698,974 options and restricted stock to employees and non-employee directors, which includes 330,625 shares as a result of the Corporation's common stock issuance in 2017, 857,191 shares as a result of the completion of the acquisition of Fox Chase in 2016 and 473,483 shares as a result of the completion of the acquisition of Valley Green Bank in 2015. The following is a summary of the Corporation's stock option activity and related information for the three months ended March 31, 2018 : (Dollars in thousands, except per share data) Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value at March 31, 2018 Outstanding at December 31, 2017 512,735 $ 21.90 Granted 193,778 28.50 Expired — — Forfeited — — Exercised (14,158 ) 18.93 Outstanding at March 31, 2018 692,355 23.81 8.0 $ 2,930 Exercisable at March 31, 2018 302,459 20.19 6.5 2,297 The following is a summary of nonvested stock options at March 31, 2018 including changes during the three months then ended: (Dollars in thousands, except per share data) Nonvested Stock Options Weighted Average Grant Date Fair Value Nonvested stock options at December 31, 2017 352,142 $ 6.47 Granted 193,778 6.46 Vested (156,024 ) 6.45 Forfeited — — Nonvested stock options at March 31, 2018 389,896 6.48 The following aggregated assumptions were used to estimate the fair value of options granted during the three months ended March 31, 2018 and 2017 : Three months ended March 31, 2018 2017 Actual Expected option life in years 6.6 6.9 Risk free interest rate 2.80 % 2.30 % Expected dividend yield 2.81 % 2.84 % Expected volatility 27.15 % 29.75 % Fair value of options $6.46 $6.72 The following is a summary of nonvested restricted stock awards at March 31, 2018 including changes during the three months then ended: (Dollars in thousands, except per share data) Nonvested Share Awards Weighted Average Grant Date Fair Value Nonvested share awards at December 31, 2017 229,026 $ 21.93 Granted 59,953 28.39 Vested (43,200 ) 18.59 Forfeited (13,750 ) 18.52 Nonvested share awards at March 31, 2018 232,029 24.43 The fair value of restricted stock is equivalent to the fair value on the date of grant and is amortized over the vesting period. Certain information regarding restricted stock is summarized below for the periods indicated: Three months ended March 31, (Dollars in thousands, except per share data) 2018 2017 Shares granted 59,953 58,448 Weighted average grant date fair value $ 28.39 $ 28.15 Intrinsic value of awards vested $ 1,193 $ 1,333 The total unrecognized compensation expense and the weighted average period over which unrecognized compensation expense is expected to be recognized related to nonvested stock options and nonvested restricted stock awards at March 31, 2018 is presented below: (Dollars in thousands) Unrecognized Compensation Cost Weighted-Average Period Remaining (Years) Stock options $ 2,293 2.3 Restricted stock awards 3,374 2.0 $ 5,667 2.1 The following table presents information related to the Corporation’s compensation expense related to stock incentive plans recognized for the periods indicated: Three months ended March 31, (Dollars in thousands) 2018 2017 Stock-based compensation expense: Stock options $ 228 $ 221 Restricted stock awards 619 610 Employee stock purchase plan 15 15 Total $ 862 $ 846 Tax benefit on nonqualified stock option expense, restricted stock awards and disqualifying dispositions of incentive stock options $ 243 $ 507

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income The following table shows the components of accumulated other comprehensive (loss) income, net of taxes, for the periods presented: (Dollars in thousands) Net Unrealized Net Change Net Change Accumulated Balance, December 31, 2017 $ (4,061 ) $ 9 $ (13,719 ) $ (17,771 ) Adjustment to initially apply ASU No. 2016-01 for equity securities measured at fair value (1) (433 ) — — (433 ) Adjustment to initially apply ASU No. 2018-02 for reclassification of stranded net tax charges (1) (968 ) 2 (2,955 ) (3,921 ) Other comprehensive (loss) income (5,015 ) 183 166 (4,666 ) Balance, March 31, 2018 $ (10,477 ) $ 194 $ (16,508 ) $ (26,791 ) Balance, December 31, 2016 $ (4,988 ) $ (141 ) $ (14,325 ) $ (19,454 ) Net Change 263 51 148 462 Balance, March 31, 2017 $ (4,725 ) $ (90 ) $ (14,177 ) $ (18,992 ) (1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2018" for additional information.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities Interest Rate Swaps The Corporation may use interest rate swap agreements to modify interest rate characteristics from variable to fixed or fixed to variable in order to reduce the impact of interest rate changes on future net interest income. Recorded amounts related to interest-rate swaps are included in other assets or liabilities. The Corporation’s credit exposure on interest rate swaps includes fair value and any collateral that is held by a third party. Changes in the fair value of derivative instruments designated as hedges of future cash flows are recognized in accumulated other comprehensive income until the underlying forecasted transactions occur, at which time the deferred gains and losses are recognized in earnings. For a qualifying fair value hedge, the gain or loss on the hedging instrument is recognized in earnings, and the change in fair value of the hedge item, to the extent attributable to the hedged risk, adjusts the carrying amount of the hedge item and is recognized in earnings. In 2014, the Corporation entered into an amortizing interest rate swap classified as a cash flow hedge with a notional amount of $20.0 million to hedge a portion of the debt financing of a pool of 10 -year maturity fixed rate loans with balances totaling $29.1 million , at time of the hedge, that were originated in 2013. A brokered money market demand account with a balance exceeding the amortizing interest rate swap balance is being used for the cash flow hedge. Under the terms of the swap agreement, the Corporation pays a fixed rate of 2.10% and receives a floating rate of one-month LIBOR . The swap matures in November 2022 . The Corporation performed an assessment of the hedge for effectiveness at the inception of the hedge and on a recurring basis to determine that the derivative has been and is expected to continue to be highly effective in offsetting changes in cash flows of the hedged item. The Corporation expects that there will be no ineffectiveness over the life of the interest rate swap. At March 31, 2018 , there is no gain or loss recorded in accumulated other comprehensive loss that is expected to be reclassified into earnings during the next twelve months. This amount could differ from amounts actually recognized due to changes in interest rates, hedge de-designations, and the addition of other hedges subsequent to March 31, 2018 . At March 31, 2018 , the notional amount of the interest rate swap was $17.6 million , with a positive fair value of $294 thousand . The Corporation has an interest rate swap classified as a fair value hedge with a current notional amount of $1.4 million to hedge a 10 -year fixed rate loan that is earning interest at 5.83% . The Corporation pays a fixed rate of 5.83% and receives a floating rate based on the one-month LIBOR plus 350 basis points. The swap matures in October 2021. The difference between changes in the fair values of the interest rate swap agreement and the hedged loan represents hedge ineffectiveness and is recorded in other noninterest income in the consolidated statements of operations. The Corporation has an interest rate swap with a current notional amount of $497 thousand , for a 15 -year fixed rate loan that is earning interest at 7.43% . The Corporation pays a fixed rate of 7.43% and receives a floating rate based on the one-month LIBOR plus 224 basis points. The swap matures in April 2022. The interest rate swap is carried at fair value in accordance with FASB ASC 815 "Derivatives and Hedging." The loan is carried at fair value under the fair value option as permitted by FASB ASC 825 "Financial Instruments." Credit Derivatives The Corporation has agreements with third-party financial institutions whereby the third-party financial institution enters into interest rate derivative contracts and foreign currency swap contracts with loan customers referred to them by the Corporation. By the terms of the agreements, the third-party financial institution has recourse to the Corporation for any exposure created under each swap contract in the event the customer defaults on the swap agreement and the agreement is in a paying position to the third-party financial institution. These transactions represent credit derivatives and are a customary arrangement that allows the Corporation to provide access to interest rate and foreign currency swap transactions for customers without creating the swap. The Corporation records the fair value of credit derivatives in other liabilities on the consolidated balance sheets. The Corporation recognizes changes in the fair value of credit derivatives, net of any fees received, in other noninterest income in the consolidated statements of income. At March 31, 2018 , the Corporation has fifteen variable-rate to fixed-rate interest rate swap transactions between the third-party financial institution and customers with a current notional amount of $75.0 million , and remaining maturities ranging from one to 10 years. At March 31, 2018 , the fair value of the swaps to the customers was a liability of $31 thousand and all swaps were in paying positions to the third-party financial institution. At March 31, 2018 , there were no material foreign currency swap transactions between the third-party institution and loan customers. The maximum potential payments by the Corporation to the third-party financial institution under these credit derivatives are not estimable as they are contingent on future interest rates and exchange rates, and the agreement does not provide for a limitation of the maximum potential payment amount. Mortgage Banking Derivatives Derivative loan commitments represent agreements for delayed delivery of financial instruments in which the buyer agrees to purchase and the seller agrees to deliver, at a specified future date, a specified instrument at a specified price or yield. The Corporation’s derivative loan commitments are commitments to sell loans secured by 1-to 4-family residential properties whose predominant risk characteristic is interest rate risk. The fair values of these derivative loan commitments are based upon the estimated amount the Corporation would receive or pay to terminate the contracts or agreements, taking into account current interest rates and, when appropriate, the current creditworthiness of the counterparties. Derivatives Tables The following table presents the notional amounts and fair values of derivatives designated as hedging instruments recorded on the consolidated balance sheets at March 31, 2018 and December 31, 2017 . The Corporation pledges cash or securities to cover the negative fair value of derivative instruments. Cash collateral associated with derivative instruments are not added to or netted against the fair value amounts. Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At March 31, 2018 Interest rate swap - cash flow hedge $ 17,648 Other assets $ 294 $ — Interest rate swap - fair value hedge 1,377 Other assets 6 — Total $ 19,025 $ 300 $ — At December 31, 2017 Interest rate swap - cash flow hedge $ 17,836 Other assets $ 13 $ — Interest rate swap - fair value hedge 1,388 — Other liabilities 12 Total $ 19,224 $ 13 $ 12 The following table presents the notional amounts and fair values of derivatives not designated as hedging instruments recorded on the consolidated balance sheets at March 31, 2018 and December 31, 2017 : Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At March 31, 2018 Interest rate swap $ 497 $ — Other liabilities $ 30 Credit derivatives 75,044 — Other liabilities 31 Interest rate locks with customers 26,090 Other assets 395 — Forward loan sale commitments 26,768 Other assets 12 — Total $ 128,399 $ 407 $ 61 At December 31, 2017 Interest rate swap $ 523 $ — Other liabilities $ 38 Credit derivatives 75,622 — Other liabilities 36 Interest rate locks with customers 27,411 Other assets 527 — Forward loan sale commitments 29,037 Other assets 61 — Total $ 132,593 $ 588 $ 74 The following table presents amounts included in the consolidated statements of income for derivatives designated as hedging instruments for the periods indicated: Statement of Income Three Months Ended (Dollars in thousands) 2018 2017 Interest rate swap—cash flow hedge—net interest payments Interest expense $ 20 $ 71 Interest rate swap—fair value hedge—ineffectiveness Other noninterest income — 3 Net loss $ (20 ) $ (68 ) The following table presents amounts included in the consolidated statements of income for derivatives not designated as hedging instruments for the periods indicated: Statement of Income Classification Three Months Ended (Dollars in thousands) 2018 2017 Credit derivatives Other noninterest income $ 4 $ 71 Interest rate locks with customers Net gain on mortgage banking activities (132 ) 407 Forward loan sale commitments Net loss on mortgage banking activities (49 ) (254 ) Total $ (177 ) $ 224 The following table presents amounts included in accumulated other comprehensive (loss) income for derivatives designated as hedging instruments at March 31, 2018 and December 31, 2017 : (Dollars in thousands) Accumulated Other At March 31, 2018 At December 31, 2017 Interest rate swap—cash flow hedge Fair value, net of taxes $ 193 $ 9 Total $ 193 $ 9

Fair Value Disclosures

Fair Value Disclosures	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures Fair value is the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. The Corporation determines the fair value of financial instruments based on the fair value hierarchy. The Corporation maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Corporation. Unobservable inputs are inputs that reflect the Corporation’s assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances, including assumptions about risk. Three levels of inputs are used to measure fair value. A financial instrument’s level within the fair value hierarchy is based on the lowest level of input significant to the fair value measurement. Transfers between levels are recognized at the end of the reporting period. Level 1: Valuations are based on quoted prices in active markets for identical assets or liabilities that the Corporation can access at the measurement date. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these products does not entail a significant degree of judgment. Level 2: Valuations are based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly. Level 3: Valuations are based on inputs that are unobservable and significant to the overall fair value measurement. Assets and liabilities utilizing Level 3 inputs include: financial instruments whose value is determined using pricing models, discounted cash-flow methodologies, or similar techniques, as well as instruments for which the fair value calculation requires significant management judgment or estimation. Following is a description of the valuation methodologies used for instruments measured at fair value on a recurring basis, as well as the general classification of such instruments pursuant to the valuation hierarchy. Investment Securities Where quoted prices are available in an active market for identical instruments, investment securities are classified within Level 1 of the valuation hierarchy. Level 1 investment securities include U.S. Treasury securities, most equity securities and money market mutual funds. Mutual funds are registered investment companies which are valued at net asset value of shares on a market exchange at the end of each trading day. Level 2 of the valuation hierarchy includes securities issued by U.S. Government sponsored enterprises, mortgage-backed securities, collateralized mortgage obligations, corporate and municipal bonds and certain equity securities. If quoted market prices are not available, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics or discounted cash flows. In cases where there is limited activity or less transparency around inputs to the valuation, investment securities are classified within Level 3 of the valuation hierarchy. Fair values for securities are determined using independent pricing services and market-participating brokers. The Corporation’s independent pricing service utilizes evaluated pricing models that vary by asset class and incorporate available trade, bid and other market information for structured securities, cash flow and, when available, loan performance data. Because many fixed income securities do not trade on a daily basis, the pricing service’s evaluated pricing applications apply information as applicable through processes, such as benchmarking of like securities, sector groupings, and matrix pricing, to prepare evaluations. If at any time, the pricing service determines that it does not have sufficient verifiable information to value a particular security, the Corporation will utilize valuations from another pricing service. Management has a sufficient understanding of the third party service’s valuation models, assumptions and inputs used in determining the fair value of securities to enable management to maintain an appropriate system of internal control. Certain corporate bonds owned by the Corporation are classified as Level 3 as they are not traded in active markets. The fair value of each bond is estimated by benchmarking similar transactions of structure, yield and credit which are owned by the Corporation and are actively traded in the market. On a quarterly basis, the Corporation reviews changes, as submitted by the pricing service, in the market value of its security portfolio. Individual changes in valuations are reviewed for consistency with general interest rate movements and any known credit concerns for specific securities. If, upon the Corporation’s review or in comparing with another service, a material difference between pricing evaluations were to exist, the Corporation may submit an inquiry to the current pricing service regarding the data used to determine the valuation of a particular security. If the Corporation determines there is market information that would support a different valuation than from the current pricing service’s evaluation, the Corporation may utilize and change the security's valuation. There were no material differences in valuations noted at March 31, 2018 . Derivative Financial Instruments The fair values of derivative financial instruments are based upon the estimated amount the Corporation would receive or pay to terminate the contracts or agreements, taking into account current interest rates and, when appropriate, the current creditworthiness of the counterparties. Interest rate swaps and mortgage banking derivative financial instruments are classified within Level 2 of the valuation hierarchy. Credit derivatives are valued based on credit worthiness of the underlying borrower which is a significant unobservable input and therefore classified in Level 3 of the valuation hierarchy. Two commercial loans associated with interest rate swaps are classified in Level 3 of the valuation hierarchy since lending credit risk is not an observable input for these loans. The unrealized gain on the two loans was $27 thousand at March 31, 2018 . Contingent Consideration Liability The Corporation estimates the fair value of the contingent consideration liability by using a discounted cash flow model of future contingent payments based on projected revenue related to the acquired business. The estimated fair value of the contingent consideration liability is reviewed on a quarterly basis and any valuation adjustments resulting from a change of estimated future contingent payments based on projected revenue of the acquired business affecting the contingent consideration liability will be recorded through noninterest expense. Due to the significant unobservable input related to the projected revenue, the contingent consideration liability is classified within Level 3 of the valuation hierarchy. An increase in the projected revenue may result in a higher fair value of the contingent consideration liability. Alternatively, a decrease in the projected revenue may result in a lower estimated fair value of the contingent consideration liability. The following table presents the assets and liabilities measured at fair value on a recurring basis at March 31, 2018 and December 31, 2017 , classified using the fair value hierarchy: At March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: U.S. government corporations and agencies $ — $ 16,882 $ — $ 16,882 State and political subdivisions — 72,808 — 72,808 Residential mortgage-backed securities — 174,585 — 174,585 Collateralized mortgage obligations — 3,368 — 3,368 Corporate bonds — 71,048 26,922 97,970 Money market mutual funds 11,174 — — 11,174 Total available-for-sale securities 11,174 338,691 26,922 376,787 Equity securities - financial services industry 1,072 — — 1,072 Loans* — — 1,895 1,895 Interest rate swaps* — 300 — 300 Interest rate locks with customers* — 395 — 395 Forward loan sale commitments* — 12 — 12 Total assets $ 12,246 $ 339,398 $ 28,817 $ 380,461 Liabilities: Contingent consideration liability $ — $ — $ 322 $ 322 Interest rate swaps* — 30 — 30 Credit derivatives* — — 31 31 Total liabilities $ — $ 30 $ 353 $ 383 At December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: U.S. government corporations and agencies $ — $ 16,961 $ — $ 16,961 State and political subdivisions — 78,297 — 78,297 Residential mortgage-backed securities — 185,421 — 185,421 Collateralized mortgage obligations — 3,602 — 3,602 Corporate bonds — 79,190 27,986 107,176 Money market mutual funds 5,985 — — 5,985 Equity securities 1,076 — — 1,076 Total available-for-sale securities 7,061 363,471 27,986 398,518 Loans* — — 1,958 1,958 Interest rate swap* — 13 — 13 Interest rate locks with customers* — 527 — 527 Forward loan sale commitments* — 61 — 61 Total assets $ 7,061 $ 364,072 $ 29,944 $ 401,077 Liabilities: Contingent consideration liability $ — $ — $ 339 $ 339 Interest rate swaps* — 50 — 50 Credit derivatives* — — 36 36 Total liabilities $ — $ 50 $ 375 $ 425 * Such financial instruments are recorded at fair value as further described in Note 11, "Derivative Instruments and Hedging Activities." The following table includes a rollforward of corporate bonds, loans and credit derivatives for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the three months ended March 31, 2018 and 2017 : Three Months Ended March 31, 2018 (Dollars in thousands) Balance at Purchases/additions Sales Payments received Premium amortization, net (Decrease) increase in value Balance at March 31, 2018 Corporate bonds $ 27,986 $ — $ — $ — $ (1,064 ) $ 26,922 Loans 1,958 — — (37 ) — (26 ) 1,895 Credit derivatives (36 ) — — — — 5 (31 ) Net total $ 29,908 $ — $ — $ (37 ) $ — $ (1,085 ) $ 28,786 Three Months Ended March 31, 2017 (Dollars in thousands) Balance at Purchases/additions Sales Payments received Premium amortization, net (Decrease) increase in value Balance at March 31, 2017 Corporate bonds $ 28,778 $ — $ — $ — $ — $ (584 ) $ 28,194 Loans $ 2,138 $ — $ — $ (33 ) $ — $ (13 ) $ 2,092 Credit derivatives (9 ) (120 ) — — — 72 (57 ) Net total $ 30,907 $ (120 ) $ — $ (33 ) $ — $ (525 ) $ 30,229 The following table presents the change in the balance of the contingent consideration liability related to acquisitions for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the three months ended March 31, 2018 and 2017 : Three Months Ended March 31, 2018 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at March 31, 2018 Girard Partners $ 339 $ — $ 34 $ 17 $ 322 Total contingent consideration liability $ 339 $ — $ 34 $ 17 $ 322 Three Months Ended March 31, 2017 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at March 31, 2017 Sterner Insurance Associates $ 331 $ — $ — $ — $ 331 Girard Partners 5,668 $ — 5,284 14 398 Total contingent consideration liability $ 5,999 $ — $ 5,284 $ 14 $ 729 The Corporation may be required to periodically measure certain assets and liabilities at fair value on a non-recurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower of cost or market accounting or impairment charges of individual assets. The following table represents assets measured at fair value on a non-recurring basis at March 31, 2018 and December 31, 2017 : At March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Impaired loans held for investment $ — $ — $ 39,858 $ 39,858 Impaired leases held for investment — — 1,250 1,250 Other real estate owned — — 1,843 1,843 Total $ — $ — $ 42,951 $ 42,951 At December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Impaired loans held for investment $ — $ — $ 28,351 $ 28,351 Impaired leases held for investment — — 1,250 1,250 Other real estate owned — — 1,843 1,843 Total $ — $ — $ 31,444 $ 31,444 The following table presents assets and liabilities and off-balance sheet items not measured at fair value on a recurring or non-recurring basis in the Corporation’s consolidated balance sheets but for which the fair value is required to be disclosed at March 31, 2018 and December 31, 2017 . The disclosed fair values are classified using the fair value hierarchy. At March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 48,631 $ — $ — $ 48,631 $ 48,631 Held-to-maturity securities — 82,975 — 82,975 84,393 Federal Home Loan Bank, Federal Reserve Bank and other stock NA NA NA NA 32,801 Loans held for sale — 705 — 705 687 Net loans and leases held for investment — — 3,611,759 3,611,759 3,623,475 Servicing rights — — 11,257 11,257 6,605 Total assets $ 48,631 $ 83,680 $ 3,623,016 $ 3,755,327 $ 3,796,592 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 2,976,790 $ — $ — $ 2,976,790 $ 2,976,790 Time deposits — 519,494 — 519,494 520,503 Total deposits 2,976,790 519,494 — 3,496,284 3,497,293 Short-term borrowings — 216,426 — 216,426 216,426 Long-term debt — 157,109 — 157,109 155,692 Subordinated notes — 97,600 — 97,600 94,392 Total liabilities $ 2,976,790 $ 990,629 $ — $ 3,967,419 $ 3,963,803 Off-Balance-Sheet: Commitments to extend credit $ — $ (2,437 ) $ — $ (2,437 ) $ — At December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 75,409 $ — $ — $ 75,409 $ 75,409 Held-to-maturity securities — 55,320 — 55,320 55,564 Federal Home Loan Bank, Federal Reserve Bank and other stock NA NA NA NA 27,204 Loans held for sale — 1,676 — 1,676 1,642 Net loans and leases held for investment — — 3,547,451 3,547,451 3,566,953 Servicing rights — — 10,046 10,046 6,573 Other real estate owned — — — — — Total assets $ 75,409 $ 56,996 $ 3,557,497 $ 3,689,902 $ 3,733,345 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 2,980,170 $ — $ — $ 2,980,170 $ 2,980,170 Time deposits — 574,737 — 574,737 574,749 Total deposits 2,980,170 574,737 — 3,554,907 3,554,919 Short-term borrowings — 105,431 — 105,431 105,431 Long-term debt — 156,834 — 156,834 155,828 Subordinated notes — 98,075 — 98,075 94,331 Total liabilities $ 2,980,170 $ 935,077 $ — $ 3,915,247 $ 3,910,509 Off-Balance-Sheet: Commitments to extend credit $ — $ (2,414 ) $ — $ (2,414 ) $ — The following valuation methods and assumptions were used by the Corporation in estimating the fair value for financial instruments measured at fair value on a non-recurring basis and financial instruments not measured at fair value on a recurring or non-recurring basis in the Corporation’s consolidated balance sheets but for which the fair value is required to be disclosed: Cash and short-term interest-earning assets: The carrying amounts reported in the balance sheet for cash and due from banks, interest-earning deposits with other banks, federal funds sold and other short-term investments is their stated value. Cash and short-term interest-earning assets are classified within Level 1 in the fair value hierarchy. Held-to-maturity securities: Fair values for the held-to-maturity investment securities are estimated by using pricing models or quoted prices of securities with similar characteristics and are classified in Level 2 in the fair value hierarchy. Federal Home Loan Bank, Federal Reserve Bank and other stock: It is not practical to determine the fair values of Federal Home Loan Bank, Federal Reserve Bank and other stock, due to restrictions placed on their transferability. Loans held for sale: The fair value of the Corporation’s mortgage loans held for sale are generally determined using a pricing model based on current market information obtained from external sources, including interest rates, bids or indications provided by market participants on specific loans that are actively marketed for sale. These loans are primarily residential mortgage loans and are generally classified in Level 2 due to the observable pricing data. Loans held for sale are carried at the lower of cost or estimated fair value. There were no valuation adjustments for loans held for sale at March 31, 2018 and December 31, 2017 . Loans and leases held for investment: As of March 31, 2018 , t he fair values for loans and leases held for investment are estimated using discounted cash flow analyses, using a discount rate based on current interest rates at which similar loans with similar terms would be made to borrowers, adjusted as appropriate to consider credit, liquidity and marketability factors to arrive at a fair value that represents the Corporation's exit price at which these instruments would be sold or transferred. As of December 31, 2017 , t he fair values for loans and leases held for investment were estimated using discounted cash flow analyses, using a discount rate based on current interest rates at which similar loans with similar terms would be made to borrowers and include components for credit risk, operating expense and embedded prepayment options. An overall valuation adjustment was made for specific credit risks in addition to general portfolio risk and is significant to the valuation. Loans and leases are classified within Level 3 in the fair value hierarchy. Impaired loans and leases held for investment: For impaired loans and leases, the Corporation uses a variety of techniques to measure fair value, such as using the current appraised value of the collateral, agreements of sale, discounting the contractual cash flows, and analyzing market data that the Corporation may adjust due to specific characteristics of the loan/lease or collateral. At March 31, 2018 , impaired loans held for investment had a carrying amount of $40.6 million with a valuation allowance of $732 thousand . At December 31, 2017 , impaired loans held for investment had a carrying amount of $28.5 million with a valuation allowance of $131 thousand . The Corporation had impaired leases of $1.3 million with no reserve at March 31, 2018 and December 31, 2017 . Servicing rights: The Corporation estimates the fair value of mortgage servicing rights using discounted cash flow models that calculate the present value of estimated future net servicing income. The model uses readily available prepayment speed assumptions for the interest rates of the portfolios serviced. Mortgage servicing rights are classified within Level 3 in the fair value hierarchy based upon management's assessment of the inputs. The Corporation reviews the mortgage servicing rights portfolio on a quarterly basis for impairment and the mortgage servicing rights are carried at the lower of amortized cost or estimated fair value. The Corporation also records servicing rights on SBA loans. At March 31, 2018 and December 31, 2017 , servicing rights had a carrying amount of $6.6 million with no valuation allowance. Goodwill and other identifiable assets: Certain non-financial assets subject to measurement at fair value on a non-recurring basis include goodwill and other identifiable intangible assets. During the three months ended March 31, 2018 , there were no triggering events that required valuation of goodwill and other identifiable intangible assets. Other real estate owned: The fair value of other real estate owned (OREO) is originally estimated based upon the appraised value less estimated costs to sell. The fair value less cost to sell becomes the "original cost" of the OREO asset. Subsequently, OREO is reported as the lower of the original cost and the current the fair value less cost to sell. Capital improvement expenses associated with the construction or repair of the property are capitalized as part of the cost of the OREO asset; however, the capitalized expenses may not increase the OREO asset's recorded value to an amount greater than the asset's fair value after improvements and less cost to sell. At March 31, 2018 and December 31, 2017 , OREO had a carrying amount of $1.8 million . New appraisals are generally obtained on an annual basis if an agreement of sale does not exist. Other real estate owned is classified within Level 3 of the valuation hierarchy due to the unique characteristics of the collateral for each loan. Deposit liabilities: The fair values for demand and savings accounts, with no stated maturities, is the amount payable on demand at the reporting date (carrying value) and are classified within Level 1 in the fair value hierarchy. The fair values for time deposits with fixed maturities are estimated by discounting the final maturity using interest rates currently offered for deposits with similar remaining maturities. Time deposits are classified within Level 2 in the fair value hierarchy. Short-term borrowings: The fair value of short-term borrowings are estimated using current market rates for similar borrowings and are classified within Level 2 in the fair value hierarchy. Long-term debt: The fair value of long-term debt is estimated by using discounted cash flow analysis, based on current market rates for debt with similar terms and remaining maturities. Long-term debt is classified within Level 2 in the fair value hierarchy. Subordinated notes: The fair value of the subordinated notes are estimated by discounting the principal balance using the treasury yield curve for the term to the call date as the Corporation has the option to call the subordinated notes. The subordinated notes are classified within Level 2 in the fair value hierarchy. Off-balance-sheet instruments: Fair values for the Corporation’s off-balance-sheet instruments are based on the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing and are classified within Level 2 in the fair value hierarchy.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting At March 31, 2018 , the Corporation has three reportable business segments: Banking, Wealth Management and Insurance. The Corporation determines the segments based primarily upon product and service offerings, through the types of income generated and the regulatory environment. This is strategically how the Corporation operates and has positioned itself in the marketplace. Accordingly, significant operating decisions are based upon analysis of each of these segments. The parent holding company and intercompany eliminations are included in the "Other" segment. The Corporation's Banking segment consists of commercial, consumer and mortgage banking as well as lease financing. The Wealth Management segment consists of investment advisory services, retirement plan services, trust, municipal pension services and broker/dealer services. The Insurance segment consists of commercial lines, personal lines, benefits and human resources consulting. Each segment generates revenue from a variety of products and services it provides. Examples of products and services provided for each reportable segment are indicated below. Ÿ The Banking segment provides financial services to consumer and commercial customers and governmental units. These services include a full range of banking services such as deposit taking, loan origination and servicing, mortgage banking, other general banking services and equipment lease financing. Ÿ The Wealth Management segment offers trust and investment advisory services, guardian and custodian of employee benefits and other trust and brokerage services, as well as a registered investment advisory managing private investment accounts for both individuals and institutions. Ÿ The Insurance segment includes a full-service insurance brokerage agency offering commercial property and casualty insurance, group life and health coverage, employee benefit solutions, personal insurance lines and human resources consulting. The following table provides total assets by reportable business segment as of the dates indicated. (Dollars in thousands) At March 31, 2018 At December 31, 2017 At March 31, 2017 Banking $ 4,519,423 $ 4,466,301 $ 4,187,607 Wealth Management 36,848 34,600 31,178 Insurance 28,651 27,846 24,412 Other 29,037 26,115 30,734 Consolidated assets $ 4,613,959 $ 4,554,862 $ 4,273,931 The following tables provide reportable segment-specific information and reconciliations to consolidated financial information for the three months ended March 31, 2018 and 2017 . Three Months Ended March 31, 2018 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Interest income $ 43,522 $ 5 $ — $ 7 $ 43,534 Interest expense 5,001 — — 1,261 6,262 Net interest income 38,521 5 — (1,254 ) 37,272 Provision for loan and lease losses 2,053 — — — 2,053 Noninterest income 4,789 5,740 5,086 (33 ) 15,582 Intangible expenses 329 142 141 — 612 Restructuring charges 571 — — — 571 Other noninterest expense 27,661 3,658 3,245 (622 ) 33,942 Intersegment (revenue) expense* (291 ) 153 138 — — Income (expense) before income taxes 12,987 1,792 1,562 (665 ) 15,676 Income tax expense (benefit) 1,998 545 456 (173 ) 2,826 Net income (loss) $ 10,989 $ 1,247 $ 1,106 $ (492 ) $ 12,850 Capital expenditures $ 970 $ 49 $ 7 $ 55 $ 1,081 Three Months Ended March 31, 2017 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Interest income $ 38,392 $ 1 $ — $ 3 $ 38,396 Interest expense 2,852 — — 1,261 4,113 Net interest income 35,540 1 — (1,258 ) 34,283 Provision for loan and lease losses 2,445 — — — 2,445 Noninterest income 5,162 5,138 4,547 123 14,970 Intangible expenses 396 170 193 — 759 Other noninterest expense 25,055 3,421 3,069 (274 ) 31,271 Intersegment (revenue) expense* (264 ) 146 118 — — Income (expense) before income taxes 13,070 1,402 1,167 (861 ) 14,778 Income tax expense (benefit) 3,527 526 492 (623 ) 3,922 Net income (loss) $ 9,543 $ 876 $ 675 $ (238 ) $ 10,856 Capital expenditures $ 4,320 $ 11 $ 7 $ 50 $ 4,388 * Includes an allocation of general and administrative expenses from both the parent holding company and the Bank. These expenses are generally allocated based upon number of employees and square footage utilized.

Revenue From Contracts with Cus

Revenue From Contracts with Customers Revenue From Contracts with Customers	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	Revenue from Contracts with Customers In May 2014, the FASB issued ASU No. 2014-09, " Revenue from Contracts with Customers (Topic 606)” and subsequent related updates. The Corporation adopted the guidance effective January 1, 2018 using the modified retrospective method though no adjustments were made to retained earnings as a result of the adoption. The Corporation’s revenue is the sum of net interest income and noninterest income. Revenues are recognized when obligations under the terms of contracts with customers are satisfied, including the transfer of control of the promised goods or services to customers, in an amount that reflects the consideration the Corporation expects to be entitled to in exchange for those goods or services. The Corporation provides services to customers which have related performance obligations that are completed to recognize revenue. The Corporation's revenues are generally recognized either immediately upon the completion of the services or over time as the services are performed. Any services performed over time generally require services to be rendered each period and therefore progress in completing these services is measured based upon the passage of time. The following tables disaggregate the Corporation's revenue by major source for the three months ended March 31, 2018 and 2017 . Three Months Ended March 31, 2018 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Net interest income (1) $ 38,521 $ 5 $ — $ (1,254 ) $ 37,272 Noninterest income: Trust fee income — 1,996 — — 1,996 Service charges on deposit accounts 1,327 — — — 1,327 Investment advisory commission and fee income — 3,683 — — 3,683 Insurance commission and fee income — — 4,888 — 4,888 Other service fee income (2) 1,909 60 200 — 2,169 Bank owned life insurance income (1) 698 — — (29 ) 669 Net gain on sales of investment securities (1) 10 — — — 10 Net gain on mortgage banking activities (1) 716 — — — 716 Other income (2) 129 1 (2 ) (4 ) 124 Total noninterest income $ 4,789 $ 5,740 $ 5,086 $ (33 ) $ 15,582 Three Months Ended March 31, 2017 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Net interest income (1) $ 35,540 $ 1 $ — $ (1,258 ) $ 34,283 Noninterest income: Trust fee income — 1,907 — — 1,907 Service charges on deposit accounts 1,243 — — — 1,243 Investment advisory commission and fee income — 3,181 — — 3,181 Insurance commission and fee income — — 4,410 — 4,410 Other service fee income (2) 1,801 50 136 — 1,987 Bank owned life insurance income (1) 662 — — 121 783 Net gain on sales of investment securities (1) 13 — — 2 15 Net gain on mortgage banking activities (1) 1,113 — — — 1,113 Other income (2) 330 — 1 — 331 Total noninterest income $ 5,162 $ 5,138 $ 4,547 $ 123 $ 14,970 (1) Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of the standard. Noninterest income streams that are out-of-scope of the standard include bank owned life insurance income, sales of investment securities and mortgage banking activities. (2) Other service fee income and other income include certain items that are in scope and certain items that are out of scope of the standard and are described further in the following paragraphs. Banking Segment The Banking segment provides financial services to consumer and commercial customers and governmental units. These services include a full range of banking services such as deposit taking, loan origination and servicing, mortgage banking, other general banking services and equipment lease financing. Service charges on deposit accounts are generally earned on depository accounts for commercial and consumer customers and primarily includes fees for account services, overdraft services, and cash management services for commercial customers. Account services include fees for event-driven services such as ATM transactions and fees for periodic account maintenance activities. Cash management services for commercial customers include fees for event-driven services such as lockbox processing and line sweep services and fees for periodic account maintenance activities. The Corporation's obligation for event-driven services is satisfied at the time of the event when the service is delivered, while the obligation for periodic services is satisfied over the course of each month. Obligations for overdraft services is satisfied at the time of the overdraft. Other service fee income is earned from commercial and consumer customers and primarily includes credit and debit card interchange and merchant revenues, mortgage servicing income, which is out of scope of the standard, and other deposit related service fee income such as wire transfers, check services and safe deposit boxes. Interchange and merchant revenues are recognized concurrently with the delivery of services on a monthly basis. Other deposit related service fee income include fees for event-driven services, such as wire transfers and check services, and fees for periodic services such as safe deposit box services. The obligation for event-driven services is satisfied at the time of the event when the service is delivered, while the obligation for periodic services is satisfied over the course of each month. Other income primarily includes net gains or losses from the sales of loans and leases, net gains or losses from the sales or disposition of fixed assets and net gains or losses on interest rate swaps, all of which are out of scope of the standard, and net gains or losses on sales and write-downs of other real estate owned. Net gains or losses on sales of other real estate owned are recognized at the point in time in which control of the other real estate owned is transferred. Wealth Management Segment The wealth management segment offers trust and investment advisory services, guardian and custodian of employee benefits and other trust and brokerage services, as well as a registered investment advisory managing private investment accounts for both individuals and institutions. Trust fee income is earned for providing trust, investment management and other related services. Obligations for trust and other related services are generally satisfied over time but may be satisfied at points in time for certain activities that are transactional in nature and obligations for investment management services are generally performed over time. Fees for trust fee income are typically based on a tiered scale relative to the market value of assets under management and are recognized in conjunction with the delivery of services. Investment advisory commission and fee income include fees for financial planning, guardian and custodian of employee benefits, investment advisory, and brokerage services. Obligations for financial planning, guardian and custodian of employee benefits, and investment advisory services are generally satisfied over time and fees, typically based on a tiered scale relative to the market value of assets under management are recognized in conjunction with the delivery of services. Brokerage services are typically event driven and are based on the size and number of transactions executed at the client’s direction and recognized on the trade date. Insurance Segment The insurance segment includes a full-service insurance brokerage agency offering commercial property and casualty insurance, group life and health coverage, employee benefit solutions, personal insurance lines and human resources consulting. Insurance commission and fee income is derived primarily from commissions from the sale of insurance policies, which are generally calculated as a percentage of the policy premium, and contingent income, which is calculated based on the performance of the policies held by each carrier. Obligations for the sale of insurance policies are generally satisfied at the point in time which the policy is executed and are recognized at the point in time in which the amounts are known and collection is reasonably assured. Obligations for contingent income are generally satisfied over time and are recognized at the point in time in which the amounts are known and collection is reasonably assured. Other service fee income is earned from human resources consulting services. These obligations are generally satisfied over time and are recognized on a periodic basis.

Restructuring Charges

Restructuring Charges	3 Months Ended
	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring Charges	Restructuring Charges During January 2018, the Corporation announced the closure of two owned financial centers and one leased financial center and reduced staff associated with these financial centers, resulting in accruing a loss of $571 thousand related to the Banking business segment. These financial centers were closed in April 2018. The remaining accrued restructuring expense at January 1, 2018 of $23 thousand relates to 2016 restructuring charges. A roll-forward of the remaining accrued restructuring expense for the three months ended March 31, 2018 is as follows: (Dollars in thousands) Severance expenses Write-downs and retirements of fixed assets Lease cancellations Total Accrued at January 1, 2018 $ — $ — $ 23 $ 23 Restructuring charges 366 48 157 571 Payments (70 ) — (8 ) (78 ) Accrued at March 31, 2018 $ 296 $ 48 $ 172 $ 516

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies Disclosure	Contingencies The Corporation is periodically subject to various pending and threatened legal actions, which involve claims for monetary relief. Based upon information presently available to the Corporation, it is the Corporation's opinion that any legal and financial responsibility arising from such claims will not have a material adverse effect on the Corporation's results of operations, financial position or cash flows.

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation The accompanying unaudited consolidated financial statements include the accounts of Univest Corporation of Pennsylvania (the Corporation or Univest) and its wholly owned subsidiaries. The Corporation’s direct subsidiary is Univest Bank and Trust Co. (the Bank). All significant intercompany balances and transactions have been eliminated in consolidation. The unaudited interim consolidated financial statements included herein have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the SEC). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) have been condensed or omitted pursuant to such rules and regulations for interim financial information. The accompanying unaudited consolidated financial statements reflect all adjustments which are of a normal recurring nature and are, in the opinion of management, necessary for a fair presentation of the financial statements for the interim periods presented. Certain prior period amounts have been reclassified to conform to the current-year presentation. Operating results for the three -month period ended March 31, 2018 are not necessarily indicative of the results that may be expected for the year ended December 31, 2018 or for any other period. It is suggested that these unaudited consolidated financial statements be read in conjunction with the audited financial statements and the notes thereto included in the registrant’s Annual Report on Form 10-K for the year ended December 31, 2017 , which was filed with the SEC on March 1, 2018 .
Use of Estimates	Use of Estimates The preparation of the unaudited consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes include fair value measurement of investment securities available-for-sale, reserve for loan and lease losses and purchase accounting.
Recent Accounting Pronouncements	In February 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2018-02, " Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." This ASU clarifies the accounting treatment of the reclassification of certain income tax effects within accumulated other comprehensive income as a result of the Tax Cuts and Jobs Act. The Corporation elected to early adopt this guidance effective January 1, 2018 for all stranded tax effects resulting from tax reform and reclassified stranded tax effects, totaling $3.9 million , from accumulated other comprehensive income to retained earnings. The Corporation's policy for releasing income tax effects from accumulated other comprehensive income is to release such effects on an individual basis as each item is liquidated, sold or extinguished. See Note 10, "Accumulated Other Comprehensive (Loss) Income" for additional detail. In March 2017, the FASB issued ASU No. 2017-07, "Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." The amendments in this ASU require that an employer that sponsors defined benefit pension plans and other postretirement plans present the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. Other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. The Corporation adopted this guidance effective January 1, 2018 with retrospective application for prior period presentation. Effective January 1, 2018, components of net benefit income other than the service cost component are presented in the Corporation's statement of income in other noninterest expense rather than in salaries, benefits and commission expense. Prior period components of net benefit income other than the service cost component were reclassed to other noninterest expense in the Corporation's statement of income. 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 ASU addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The ASU requires equity investments to be measured at fair value with changes in fair value recognized in net income. At December 31, 2017 , the Corporation's equity portfolio had a carrying value of $1.1 million which included an unrealized net gain of $666 thousand . At December 31, 2017 , $433 thousand was recorded in accumulated other comprehensive income which represented the unrealized net gain, net of income taxes, based on the Corporation’s statutory tax rate as of December 31, 2017. The Corporation adopted this guidance effective January 1, 2018 with a cumulative-effect adjustment to the balance sheet as of January 1, 2018. The balance in accumulated other comprehensive income of $433 thousand was reclassified to retained earnings effective January 1, 2018. The carrying value of the equity securities, at January 1, 2018, did not change; however, any future increases or decreases in fair value is recorded as an increase or decrease to the carrying value and recognized in other noninterest income. During the three months ended March 31, 2018, the Corporation recognized a $4 thousand net loss on equity securities in other noninterest income. In May 2014, the FASB issued ASU No. 2014-09, " Revenue from Contracts with Customers (Topic 606)” and subsequent related updates. The Corporation adopted the guidance effective January 1, 2018 using the modified retrospective method though no adjustments were made to retained earnings as a result of the adoption. The Corporation provided expanded disclosures related to recognition of revenue from contracts with customers. See Note 14, "Revenue from Contracts with Customers." Recent Accounting Pronouncements Yet to Be Adopted In August 2017, the FASB issued ASU No. 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. " The amendments in this update expand and refine hedge accounting for both non-financial and financial risk components and aligns the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. Additional hedging strategies permitted for hedge accounting include: hedges of contractually-specified price components of commodity purchases or sales, hedges of the benchmark rate component of the contractual coupon cash flows of fixed-rate assets or liabilities, hedges of the portion of a closed portfolio of prepayable assets not expected to prepay, and partial-term hedges of fixed-rate assets or liabilities. The ASU amends the presentation and disclosure requirements and changes how entities assess effectiveness. The ASU eliminates the requirement to separately measure and report hedge ineffectiveness and requires all items that affect earnings be presented in the same income statement line as the hedged items. After initial qualification, the new guidance permits a qualitative effectiveness assessment for certain hedges instead of a quantitative test, such as a regression analysis, if the entity can reasonably support an expectation of high effectiveness throughout the term of the hedge. An initial quantitative test to establish that the hedge relationship is highly effective is still required. The ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years for public business entities, or January 1, 2019 for the Corporation. Early adoption is permitted, including an interim period. The amended presentation and disclosure guidance is required only prospectively. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In March 2017, the FASB issued ASU No. 2017-08, “Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities.” This ASU shortens the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, or January 1, 2019 for the Corporation. Early adoption is permitted, including an interim period. This ASU is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In January 2017, the FASB issued ASU No. 2017-04, "Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment." This ASU eliminates Step 2 of the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. Under the new guidance, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. Public business entities that are SEC filers should adopt the amendments in this ASU for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, or for the Corporation's goodwill impairment test in 2020. Early adoption is permitted for goodwill impairment tests with measurement dates after January 1, 2017. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In June 2016, the FASB issued ASU No. 2016-13, “ Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This ASU requires businesses and other organizations to measure the current expected credit losses (CECL) on financial assets, such as loans, net investments in leases, certain debt securities, bond insurance and other receivables. The amendments affect entities holding financial assets and net investments in leases that are not accounted for at fair value through net income. Current GAAP requires an incurred loss methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The amendments in this ASU replace the incurred loss impairment methodology with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonableness and supportable information to inform credit loss estimates. An entity should apply the amendments through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (modified-retrospective approach). Acquired credit impaired loans for which the guidance in Accounting Standards Codification (ASC) Topic 310-30 has been previously applied should prospectively apply the guidance in this ASU. A prospective transition approach is required for debt securities for which an other-than-temporary impairment has been recognized before the effective date. The ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those years for public business entities that are SEC filers, or January 1, 2020 for the Corporation. The Corporation is in the process of evaluating the impact of the adoption of this guidance on the Corporation's financial statements; however, it is anticipated that the allowance will increase upon adoption of CECL and that the increased allowance level will decrease shareholders' equity and regulatory capital and ratios. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)" to revise 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. Disclosures will be required by lessees and lessors to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. Lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. An entity that elects to apply the practical expedients will, in effect, continue to account for leases that commence before the effective date in accordance with previous GAAP unless the lease is modified, except that lessees are required to recognize a right-of-use asset and a lease liability for all operating leases at each reporting date based on the present value of the remaining minimum rental payments that were tracked and disclosed under previous GAAP. The ASU is effective for the first interim period within annual periods beginning after December 15, 2018, or January 1, 2019, with early adoption permitted. The Corporation is in the process of evaluating the impact of the adoption of this guidance on the Corporation's financial statements; however, the adoption of this ASU will impact the balance sheet for the recording of assets and liabilities for operating leases; any initial or continued impact of the recording of assets will have a negative impact on all Corporation and Bank capital ratios under current regulatory guidance and possibly equity ratios.

Earnings per Share (Tables)

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share, Basic and Diluted [Abstract]
Summary of Computation for Basic and Diluted Earnings per Share	The Corporation uses the two-class method to calculate earnings per share as the unvested restricted stock issued under the Corporation's equity incentive plans are participating shares with nonforfeitable rights to dividends. Under the two-class method, earnings per common share are computed by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding for the period. In applying the two-class method, undistributed earnings are allocated to both common shares and participating securities based on the number of weighted average shares outstanding during the period. The table also notes anti-dilutive options which are those options with weighted average exercise prices in excess of the weighted average market value for the periods presented. The following table sets forth the computation of basic and diluted earnings per share: Three Months Ended (Dollars and shares in thousands, except per share data) 2018 2017 Numerator: Net income $ 12,850 $ 10,856 Net income allocated to unvested restricted stock (97 ) (113 ) Net income allocated to common shares $ 12,753 $ 10,743 Denominator: Weighted average shares outstanding 29,355 26,631 Average unvested restricted stock (215 ) (286 ) Denominator for basic earnings per share— weighted-average shares outstanding 29,140 26,345 Effect of dilutive securities—employee stock options 94 103 Denominator for diluted earnings per share— adjusted weighted-average shares outstanding 29,234 26,448 Basic earnings per share $ 0.44 $ 0.41 Diluted earnings per share $ 0.44 $ 0.41 Average anti-dilutive options excluded from computation of diluted earnings per share 217 126

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Amortized cost and estimated fair value of held to maturity securities and available for sale securities by contractual maturity	The following table shows the amortized cost and the estimated fair value of the held-to-maturity securities and available-for-sale securities at March 31, 2018 and December 31, 2017 , by contractual maturity within each type: At March 31, 2018 At December 31, 2017 (Dollars in thousands) Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Securities Held-to-Maturity U.S. government corporations and agencies: After 1 year to 5 years $ 6,996 $ — $ (169 ) $ 6,827 $ 6,995 $ — $ (77 ) $ 6,918 6,996 — (169 ) 6,827 6,995 — (77 ) 6,918 Residential mortgage-backed securities: After 5 years to 10 years 13,495 — (157 ) 13,338 8,944 — (51 ) 8,893 Over 10 years 63,902 — (1,092 ) 62,810 39,625 44 (160 ) 39,509 77,397 — (1,249 ) 76,148 48,569 44 (211 ) 48,402 Total $ 84,393 $ — $ (1,418 ) $ 82,975 $ 55,564 $ 44 $ (288 ) $ 55,320 Securities Available-for-Sale U.S. government corporations and agencies: Within 1 year $ 6,527 $ — $ (40 ) $ 6,487 $ 1,499 $ — $ (3 ) $ 1,496 After 1 year to 5 years 10,519 — (124 ) 10,395 15,590 — (125 ) 15,465 17,046 — (164 ) 16,882 17,089 — (128 ) 16,961 State and political subdivisions: Within 1 year 5,824 — (9 ) 5,815 2,721 1 (6 ) 2,716 After 1 year to 5 years 13,997 28 (58 ) 13,967 16,787 33 (44 ) 16,776 After 5 years to 10 years 49,935 508 (453 ) 49,990 54,846 897 (73 ) 55,670 Over 10 years 3,120 — (84 ) 3,036 3,120 15 — 3,135 72,876 536 (604 ) 72,808 77,474 946 (123 ) 78,297 Residential mortgage-backed securities: After 1 year to 5 years 3,969 2 (57 ) 3,914 3,913 12 (26 ) 3,899 After 5 years to 10 years 54,753 — (1,691 ) 53,062 51,428 5 (852 ) 50,581 Over 10 years 121,722 50 (4,163 ) 117,609 133,237 87 (2,383 ) 130,941 180,444 52 (5,911 ) 174,585 188,578 104 (3,261 ) 185,421 Collateralized mortgage obligations: After 5 years to 10 years 1,999 — (100 ) 1,899 2,103 — (82 ) 2,021 Over 10 years 1,485 — (16 ) 1,469 1,567 14 — 1,581 3,484 — (116 ) 3,368 3,670 14 (82 ) 3,602 Corporate bonds: Within 1 year 5,016 — (19 ) 4,997 10,006 — (5 ) 10,001 After 1 year to 5 years 23,845 13 (436 ) 23,422 24,885 20 (147 ) 24,758 After 5 years to 10 years 16,164 — (458 ) 15,706 16,669 71 (296 ) 16,444 Over 10 years 60,000 — (6,155 ) 53,845 60,000 — (4,027 ) 55,973 105,025 13 (7,068 ) 97,970 111,560 91 (4,475 ) 107,176 Money market mutual funds: No stated maturity 11,174 — — 11,174 5,985 — — 5,985 11,174 — — 11,174 5,985 — — 5,985 Equity securities: No stated maturity N/A N/A N/A N/A 410 667 (1 ) 1,076 N/A N/A N/A N/A 410 667 (1 ) 1,076 Total $ 390,049 $ 601 $ (13,863 ) $ 376,787 $ 404,766 $ 1,822 $ (8,070 ) $ 398,518
Information Related to Sales of Securities Available-for-Sale	The following table presents information related to sales of securities available-for-sale during the three months ended March 31, 2018 and 2017 : Three Months Ended March 31, (Dollars in thousands) 2018 2017 Securities available-for-sale: Proceeds from sales $ 1,010 $ 1,762 Gross realized gains on sales 10 15 Tax expense related to net realized gains on sales 2 5
Amount of Securities in Unrealized Loss Position	The following table shows the fair value of securities that were in an unrealized loss position at March 31, 2018 and December 31, 2017 by the length of time those securities were in a continuous loss position. For the investment securities in an unrealized loss position, the Corporation has concluded, based on its analysis, that the unrealized losses are primarily caused by the movement of interest rates and current market conditions. The contractual terms of these investments do not permit the issuer to settle the securities at a price less than the par value of the investment. It is more likely than not that the Corporation will not be required to sell the investments before a recovery of carrying value. Less than Twelve Months Total (Dollars in thousands) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized At March 31, 2018 Securities Held-to-Maturity U.S. government corporations and agencies $ 6,826 $ (169 ) $ — $ — $ 6,826 $ (169 ) Residential mortgage-backed securities 76,149 (1,249 ) — — 76,149 (1,249 ) Total $ 82,975 $ (1,418 ) $ — $ — $ 82,975 $ (1,418 ) Securities Available-for-Sale U.S. government corporations and agencies $ 5,155 $ (59 ) $ 11,727 $ (105 ) $ 16,882 $ (164 ) State and political subdivisions 35,367 (553 ) 6,310 (51 ) 41,677 (604 ) Residential mortgage-backed securities 36,274 (819 ) 134,167 (5,092 ) 170,441 (5,911 ) Collateralized mortgage obligations 1,469 (16 ) 1,899 (100 ) 3,368 (116 ) Corporate bonds 23,242 (384 ) 71,714 (6,684 ) 94,956 (7,068 ) Total $ 101,507 $ (1,831 ) $ 225,817 $ (12,032 ) $ 327,324 $ (13,863 ) At December 31, 2017 Securities Held-to-Maturity U.S. government corporations and agencies $ 6,919 $ (77 ) $ — $ — $ 6,919 $ (77 ) Residential mortgage-backed securities 40,881 (211 ) — — 40,881 (211 ) Total $ 47,800 $ (288 ) $ — $ — $ 47,800 $ (288 ) Securities Available-for-Sale U.S. government corporations and agencies $ 5,213 $ (38 ) $ 11,749 $ (90 ) $ 16,962 $ (128 ) State and political subdivisions 18,457 (91 ) 6,332 (32 ) 24,789 (123 ) Residential mortgage-backed securities 32,217 (210 ) 141,371 (3,051 ) 173,588 (3,261 ) Collateralized mortgage obligations — — 2,021 (82 ) 2,021 (82 ) Corporate bonds 18,464 (1,016 ) 71,957 (3,459 ) 90,421 (4,475 ) Equity securities — (1 ) 4 — 4 (1 ) Total $ 74,351 $ (1,356 ) $ 233,434 $ (6,714 ) $ 307,785 $ (8,070 ) At March 31, 2018 , gross unrealized losses for securities in an unrealized loss position for twelve months or longer, totaled $12.0 million . Four federal agency bonds, thirteen investment grade corporate bonds, 105 federal agency residential mortgage securities, and seven investment grade municipal bonds had respective unrealized loss positions of $105 thousand , $6.7 million , $5.2 million and $51 thousand , respectively. The fair value of these 129 securities fluctuate with changes in market conditions which for these underlying securities is primarily due to changes in the interest rate environment. The Corporation does not intend to sell the securities in an unrealized loss position and is unlikely to be required to sell these securities before a recovery of fair value, which may be maturity. Upon review of the attributes of the individual securities, the Corporation concluded these securities were not other-than-temporarily impaired. The Corporation did not recognize any other-than-temporary impairment charges on debt securities for the three months ended March 31, 2018 and 2017 . In conjunction with the adoption of ASU 2016-01, the Corporation recognized a $4 thousand net loss on equity securities during the three months ended March 31, 2018 in other noninterest income and the net unrealized loss on equity securities held at March 31, 2018 was $4 thousand . See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2018" for additional information.

Loans and Leases (Tables)

Loans and Leases (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Summary of Major Loan and Lease Categories	At March 31, 2018 (Dollars in thousands) Originated Acquired Total Commercial, financial and agricultural $ 856,250 $ 51,688 $ 907,938 Real estate-commercial 1,293,496 291,324 1,584,820 Real estate-construction 180,681 4,452 185,133 Real estate-residential secured for business purpose 251,188 82,173 333,361 Real estate-residential secured for personal purpose 278,990 58,183 337,173 Real estate-home equity secured for personal purpose 172,121 11,347 183,468 Loans to individuals 28,112 143 28,255 Lease financings 129,740 — 129,740 Total loans and leases held for investment, net of deferred income $ 3,190,578 $ 499,310 $ 3,689,888 Unearned lease income, included in the above table $ (14,153 ) $ — $ (14,153 ) Net deferred costs, included in the above table 4,436 — 4,436 Overdraft deposits included in the above table 396 — 396 At December 31, 2017 (Dollars in thousands) Originated Acquired Total Commercial, financial and agricultural $ 833,100 $ 63,111 $ 896,211 Real estate-commercial 1,235,681 306,460 1,542,141 Real estate-construction 171,244 4,592 175,836 Real estate-residential secured for business purpose 250,800 91,167 341,967 Real estate-residential secured for personal purpose 260,654 60,920 321,574 Real estate-home equity secured for personal purpose 171,884 12,386 184,270 Loans to individuals 28,156 144 28,300 Lease financings 129,768 — 129,768 Total loans and leases held for investment, net of deferred income $ 3,081,287 $ 538,780 $ 3,620,067 Unearned lease income, included in the above table $ (14,243 ) $ — $ (14,243 ) Net deferred costs, included in the above table 4,669 — 4,669 Overdraft deposits included in the above table 222 — 222
Schedule of Impaired Loans	The outstanding principal balance and carrying amount for acquired credit impaired loans at March 31, 2018 and December 31, 2017 were as follows: (Dollars in thousands) At March 31, 2018 At December 31, 2017 Outstanding principal balance $ 2,197 $ 2,325 Carrying amount 1,525 1,583 Allowance for loan losses — — The following table presents the changes in accretable yield on acquired credit impaired loans: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Beginning of period $ 11 $ 50 Reclassification from nonaccretable discount 81 107 Accretable discount amortized to interest income (87 ) (116 ) Disposals — (4 ) End of period $ 5 $ 37 The following presents, by class of loans, the recorded investment and unpaid principal balance of impaired loans, the amounts of the impaired loans for which there is not a reserve for credit losses and the amounts for which there is a reserve for credit losses at March 31, 2018 and December 31, 2017 . The impaired loans exclude acquired credit impaired loans. At March 31, 2018 At December 31, 2017 (Dollars in thousands) Recorded Unpaid Related Recorded Unpaid Related Impaired loans with no related reserve recorded: Commercial, financial and agricultural $ 4,683 $ 5,518 $ 7,019 $ 8,301 Real estate—commercial real estate 17,738 18,564 15,621 16,507 Real estate—construction — — 365 365 Real estate—residential secured for business purpose 1,697 1,819 3,430 4,620 Real estate—residential secured for personal purpose 635 691 508 566 Real estate—home equity secured for personal purpose 649 674 511 523 Total impaired loans with no related reserve recorded $ 25,402 $ 27,266 $ 27,454 $ 30,882 Impaired loans with a reserve recorded: Commercial, financial and agricultural $ 1,877 $ 2,336 $ 34 $ 60 $ 60 $ 31 Real estate—commercial real estate 12,835 12,929 684 933 933 99 Real estate—residential secured for business purpose 476 549 14 35 37 1 Total impaired loans with a reserve recorded $ 15,188 $ 15,814 $ 732 $ 1,028 $ 1,030 $ 131 Total impaired loans: Commercial, financial and agricultural $ 6,560 $ 7,854 $ 34 $ 7,079 $ 8,361 $ 31 Real estate—commercial real estate 30,573 31,493 684 16,554 17,440 99 Real estate—construction — — — 365 365 — Real estate—residential secured for business purpose 2,173 2,368 14 3,465 4,657 1 Real estate—residential secured for personal purpose 635 691 — 508 566 — Real estate—home equity secured for personal purpose 649 674 — 511 523 — Total impaired loans $ 40,590 $ 43,080 $ 732 $ 28,482 $ 31,912 $ 131
Schedule of Age Analysis of Past Due Loans and Leases	The following presents, by class of loans and leases, an aging of past due loans and leases, loans and leases which are current and the recorded investment in loans and leases 90 days or more past due which are accruing interest at March 31, 2018 and December 31, 2017 : (Dollars in thousands) 30-59 60-89 90 Days Total Current Acquired Credit Impaired Total Loans Recorded At March 31, 2018 Commercial, financial and agricultural $ 663 $ 187 $ 2,763 $ 3,613 $ 903,947 $ 378 $ 907,938 $ — Real estate—commercial real estate and construction: Commercial real estate 1,564 174 4,347 6,085 1,578,379 356 1,584,820 — Construction 1,168 — — 1,168 183,965 — 185,133 — Real estate—residential and home equity: Residential secured for business purpose 1,164 — 962 2,126 330,649 586 333,361 — Residential secured for personal purpose 3,575 — 826 4,401 332,567 205 337,173 569 Home equity secured for personal purpose 1,335 74 1,110 2,519 180,949 — 183,468 955 Loans to individuals 153 53 644 850 27,405 — 28,255 644 Lease financings 1,225 635 127 1,987 127,753 — 129,740 127 Total $ 10,847 $ 1,123 $ 10,779 $ 22,749 $ 3,665,614 $ 1,525 $ 3,689,888 $ 2,295 At December 31, 2017 Commercial, financial and agricultural $ 2,182 $ 1,440 $ 1,509 $ 5,131 $ 890,658 $ 422 $ 896,211 $ — Real estate—commercial real estate and construction: Commercial real estate 733 548 1,410 2,691 1,539,094 356 1,542,141 — Construction 1,970 — 365 2,335 173,501 — 175,836 — Real estate—residential and home equity: Residential secured for business purpose 1,651 315 1,355 3,321 338,061 585 341,967 162 Residential secured for personal purpose 4,368 1,118 23 5,509 315,845 220 321,574 — Home equity secured for personal purpose 1,414 333 464 2,211 182,059 — 184,270 148 Loans to individuals 221 139 195 555 27,745 — 28,300 195 Lease financings 1,143 392 1,855 3,390 126,378 — 129,768 256 Total $ 13,682 $ 4,285 $ 7,176 $ 25,143 $ 3,593,341 $ 1,583 $ 3,620,067 $ 761
Schedule of Nonperforming Loans and Leases	The following presents, by class of loans and leases, nonperforming loans and leases at March 31, 2018 and December 31, 2017 . Nonperforming loans exclude acquired credit impaired loans from Fox Chase and Valley Green. At March 31, 2018 At December 31, 2017 (Dollars in thousands) Nonaccrual Accruing Loans and Total Nonperforming Nonaccrual Accruing Loans and Total Nonperforming Commercial, financial and agricultural $ 4,192 $ 796 $ — $ 4,988 $ 4,448 $ 921 $ — $ 5,369 Real estate—commercial real estate and construction: Commercial real estate 19,014 — — 19,014 4,285 10,266 — 14,551 Construction — — — — 365 — — 365 Real estate—residential and home equity: Residential secured for business purpose 1,565 195 — 1,760 2,843 206 162 3,211 Residential secured for personal purpose 594 41 569 1,204 466 42 — 508 Home equity secured for personal purpose 649 — 955 1,604 511 — 148 659 Loans to individuals — — 644 644 — — 195 195 Lease financings 1,680 — 127 1,807 1,599 — 256 1,855 Total $ 27,694 $ 1,032 $ 2,295 $ 31,021 $ 14,517 $ 11,435 $ 761 $ 26,713 * Includes nonaccrual troubled debt restructured loans and lease modifications of $1.7 million and $2.5 million at March 31, 2018 and December 31, 2017 , respectively.
Summary of Credit Quality Indicators	The following tables present by class, the recorded investment in loans and leases held for investment by credit quality indicator at March 31, 2018 and December 31, 2017 . The Corporation employs a ten (10) grade risk rating system related to the credit quality of commercial loans and residential real estate loans secured for a business purpose of which the first six categories are pass categories (credits not adversely rated). The following is a description of the internal risk ratings and the likelihood of loss related to each risk rating. Loans with a relationship balance of less than $1 million are reviewed on a performance basis, with the primary monitored metrics being delinquency (60 days or more past due) and revolving stagnancy. Loans with relationships greater than $1 million are reviewed at least annually. Loan relationships exceeding $15 million or classified as special mention or substandard are reviewed at least quarterly, or more frequently based on management’s discretion. 1. Cash Secured—No credit risk 2. Fully Secured—Negligible credit risk 3. Strong—Minimal credit risk 4. Satisfactory—Nominal credit risk 5. Acceptable—Moderate credit risk 6. Pre-Watch—Marginal, but stable credit risk 7. Special Mention—Potential weakness 8. Substandard—Well-defined weakness 9. Doubtful—Collection in-full improbable 10. Loss—Considered uncollectible Commercial Credit Exposure Credit Risk by Internally Assigned Grades The following table presents classifications for originated loans: (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Total At March 31, 2018 Grade: 1. Cash secured/ 2. Fully secured $ 2,257 $ 399 $ 17,935 $ — $ 20,591 3. Strong 15,010 1,779 — — 16,789 4. Satisfactory 19,252 25,858 — 271 45,381 5. Acceptable 605,721 1,001,237 73,203 215,138 1,895,299 6. Pre-watch 196,721 239,815 87,030 30,898 554,464 7. Special Mention 6,939 13,117 2,513 1,024 23,593 8. Substandard 10,350 11,291 — 3,857 25,498 9. Doubtful — — — — — 10.Loss — — — — — Total $ 856,250 $ 1,293,496 $ 180,681 $ 251,188 $ 2,581,615 At December 31, 2017 Grade: 1. Cash secured/ 2. Fully secured $ 2,521 $ — $ 20,420 $ — $ 22,941 3. Strong 9,206 1,821 — — 11,027 4. Satisfactory 30,283 26,950 — 274 57,507 5. Acceptable 593,205 960,258 76,899 215,750 1,846,112 6. Pre-watch 179,990 209,844 72,168 29,738 491,740 7. Special Mention 4,027 12,974 1,392 296 18,689 8. Substandard 13,868 23,834 365 4,742 42,809 9. Doubtful — — — — — 10.Loss — — — — — Total $ 833,100 $ 1,235,681 $ 171,244 $ 250,800 $ 2,490,825 The following table presents classifications for acquired loans: (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Total At March 31, 2018 Grade: 1. Cash secured/ 2. Fully secured $ 1,125 $ — $ — $ — $ 1,125 3. Strong — — — — — 4. Satisfactory 118 463 — — 581 5. Acceptable 39,143 173,731 — 67,954 280,828 6. Pre-watch 8,496 97,057 4,452 12,738 122,743 7. Special Mention 891 4,504 — — 5,395 8. Substandard 1,915 15,569 — 1,481 18,965 9. Doubtful — — — — — 10.Loss — — — — — Total $ 51,688 $ 291,324 $ 4,452 $ 82,173 $ 429,637 December 31, 2017 Grade: 1. Cash secured/ 2. Fully secured $ 1,120 $ — $ — $ — $ 1,120 3. Strong — — — — — 4. Satisfactory 125 482 — — 607 5. Acceptable 49,949 183,490 — 73,402 306,841 6. Pre-watch 6,183 98,977 4,592 15,861 125,613 7. Special Mention 1,007 17,028 — — 18,035 8. Substandard 4,727 6,483 — 1,904 13,114 9. Doubtful — — — — — 10.Loss — — — — — Total $ 63,111 $ 306,460 $ 4,592 $ 91,167 $ 465,330 The following table presents classifications for originated loans: (Dollars in thousands) Real Estate— Real Estate— Loans to Lease Total At March 31, 2018 Performing $ 278,357 $ 171,597 $ 27,468 $ 127,933 $ 605,355 Nonperforming 633 524 644 1,807 3,608 Total $ 278,990 $ 172,121 $ 28,112 $ 129,740 $ 608,963 At December 31, 2017 Performing $ 260,589 $ 171,527 $ 27,961 $ 127,913 $ 587,990 Nonperforming 65 357 195 1,855 2,472 Total $ 260,654 $ 171,884 $ 28,156 $ 129,768 $ 590,462 The following table presents classifications for acquired loans: (Dollars in thousands) Real Estate— Real Estate— Loans to Lease Total At March 31, 2018 Performing $ 57,612 $ 10,267 $ 143 $ — $ 68,022 Nonperforming 571 1,080 — — 1,651 Total $ 58,183 $ 11,347 $ 143 $ — $ 69,673 At December 31, 2017 Performing $ 60,477 $ 12,084 $ 144 $ — $ 72,705 Nonperforming 443 302 — — 745 Total $ 60,920 $ 12,386 $ 144 $ — $ 73,450
Summary of Activity in the Reserve for Loan and Lease Losses	eserve for Loan and Lease Losses and Recorded Investment in Loans and Leases The following presents, by portfolio segment, a summary of the activity in the reserve for loan and lease losses for the three months ended March 31, 2018 and 2017 : (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Loans to Lease Unallocated Total Three Months Ended March 31, 2018 Reserve for loan and lease losses: Beginning balance $ 6,742 $ 9,839 $ 1,661 $ 1,754 $ 373 $ 1,132 $ 54 $ 21,555 Charge-offs (601 ) (40 ) — — (92 ) (136 ) N/A (869 ) Recoveries 226 73 251 57 30 34 N/A 671 Provision (recovery of provision) 575 1,306 (41 ) 96 61 49 6 2,052 Provision for acquired credit impaired loans — — — 1 — — — 1 Ending balance $ 6,942 $ 11,178 $ 1,871 $ 1,908 $ 372 $ 1,079 $ 60 $ 23,410 Three Months Ended March 31, 2017 Reserve for loan and lease losses: Beginning balance $ 7,037 $ 7,505 $ 774 $ 993 $ 364 $ 788 $ 38 $ 17,499 Charge-offs (178 ) — (42 ) (94 ) (126 ) (257 ) N/A (697 ) Recoveries 187 3 10 17 35 29 N/A 281 Provision (recovery of provision) 844 116 603 82 62 769 (34 ) 2,442 Provision for acquired credit impaired loans — — — 3 — — — 3 Ending balance $ 7,890 $ 7,624 $ 1,345 $ 1,001 $ 335 $ 1,329 $ 4 $ 19,528 N/A – Not applicable
Summary of Average Recorded Investment in Impaired Loans and Leases and Analysis of Interest on Impaired Loans	The following presents by class of loans, the average recorded investment in impaired loans and an analysis of interest on impaired loans. A loan may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. Therefore, interest income on accruing impaired loans is recognized using the accrual method. Three Months Ended March 31, 2018 Three Months Ended March 31, 2017 (Dollars in thousands) Average Interest Additional Average Interest Additional Commercial, financial and agricultural $ 7,703 $ 40 $ 77 $ 11,418 $ 43 $ 85 Real estate—commercial real estate 19,916 172 287 23,949 233 73 Real estate—construction 183 — 2 — — — Real estate—residential secured for business purpose 2,217 5 24 4,268 16 44 Real estate—residential secured for personal purpose 544 1 11 552 — 8 Real estate—home equity secured for personal purpose 549 — 8 525 — 5 Total $ 31,112 $ 218 $ 409 $ 40,712 $ 292 $ 215 * Includes interest income recognized on a cash basis for nonaccrual loans of $6 thousand and $1 thousand for the three months ended March 31, 2018 and 2017 , respectively, and interest income recognized on the accrual method for accruing impaired loans of $212 thousand and $291 thousand for the three months ended March 31, 2018 and 2017 , respectively.
Schedule of Troubled Debt Restructured Loans	The following presents foreclosed residential real estate property included in other real estate owned at March 31, 2018 and December 31, 2017 . (Dollars in thousands) At March 31, 2018 At December 31, 2017 Foreclosed residential real estate $ 80 $ 80 The following presents, by class of loans, information regarding consumer mortgages collateralized by residential real estate property that are in the process of foreclosure at March 31, 2018 and December 31, 2017 : (Dollars in thousands) At March 31, 2018 At December 31, 2017 Real estate-residential secured for personal purpose $ 317 $ 31 Real estate-home equity secured for personal purpose 79 — Total $ 396 $ 31 There were no loans restructured during the three months ended March 31, 2018 and March 31, 2017 . The Corporation grants concessions to existing borrowers primarily related to extensions of interest-only payment periods and an occasional payment modification. These modifications typically are for up to one year . The goal when restructuring a credit is to establish a reasonable period of time to provide cash flow relief to customers experiencing cash flow difficulties. Accruing troubled debt restructured loans are primarily comprised of loans on which interest is being accrued under the restructured terms, and the loans are current or less than ninety days past due.
Schedule of Accruing and Nonaccruing Troubled Debt Restructured Loans	The following presents, by class of loans, information regarding accruing and nonaccrual troubled debt restructured loans, for which there were payment defaults within twelve months of the restructuring date: Three Months Ended March 31, 2018 2017 (Dollars in thousands) Number Recorded Number Recorded Accruing Troubled Debt Restructured Loans: Total — $ — — $ — Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural 1 $ 953 — $ — Total 1 $ 953 — $ —

Goodwill and Other Intangible29

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Changes in Carrying Amount of Goodwill	Changes in the carrying amount of the Corporation's goodwill by business segment for the three months ended March 31, 2018 were as follows: (Dollars in thousands) Banking Wealth Management Insurance Consolidated Balance at December 31, 2017 $ 138,476 $ 15,434 $ 18,649 $ 172,559 Addition to goodwill from acquisitions — — — — Balance at March 31, 2018 $ 138,476 $ 15,434 $ 18,649 $ 172,559
Components of Intangible Assets	The following table reflects the components of intangible assets at the dates indicated: At March 31, 2018 At December 31, 2017 (Dollars in thousands) Gross Carrying Amount Accumulated Amortization and Fair Value Adjustments Net Carrying Amount Gross Carrying Amount Accumulated Amortization and Fair Value Adjustments Net Carrying Amount Amortized intangible assets: Covenants not to compete $ 710 $ 645 $ 65 $ 710 $ 580 $ 130 Core deposit intangibles 6,788 2,399 4,389 6,788 2,135 4,653 Customer related intangibles 12,381 10,094 2,287 12,381 9,828 2,553 Servicing rights 16,192 9,587 6,605 15,855 9,282 6,573 Total amortized intangible assets $ 36,071 $ 22,725 $ 13,346 $ 35,734 $ 21,825 $ 13,909
Estimated Aggregate Amortization Expense	The estimated aggregate amortization expense for covenants not to compete and core deposit and customer related intangibles for the remainder of 2018 and the succeeding fiscal years is as follows: Year (Dollars in thousands) Amount Remainder of 2018 $ 1,519 2019 1,565 2020 1,200 2021 923 2022 666 Thereafter 868 The estimated amortization expense of servicing rights for the remainder of 2018 and the succeeding fiscal years is as follows: Year (Dollars in thousands) Amount Remainder of 2018 $ 874 2019 774 2020 684 2021 602 2022 529 Thereafter 3,142
Changes in Mortgage Servicing Rights	Changes in the servicing rights balance are summarized as follows: Three Months Ended March 31, (Dollars in thousands) 2018 2017 Beginning of period $ 6,573 $ 6,485 Servicing rights capitalized 337 343 Amortization of servicing rights (305 ) (326 ) Changes in valuation allowance — — End of period $ 6,605 $ 6,502 Residential mortgage and SBA loans serviced for others $ 1,012,677 $ 972,617

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Schedule Of Maturities Of Time Deposits [Table Text Block]	Deposits and their respective weighted average interest rate at March 31, 2018 and December 31, 2017 consist of the following: At March 31, 2018 At December 31, 2017 Weighted Average Interest Rate Amount Weighted Average Interest Rate Amount (Dollars in thousands) Noninterest-bearing deposits — % $ 1,002,021 — % $ 1,040,026 Demand deposits 0.51 1,159,737 0.43 1,109,438 Savings deposits 0.30 815,032 0.26 830,706 Time deposits 1.18 520,503 1.12 574,749 Total 0.41 % $ 3,497,293 0.38 % $ 3,554,919
Schedule of Components of Weighted Average Interest Rate and Balance of Deposits [Table Text Block]	At March 31, 2018 , the scheduled maturities of time deposits are as follows: Year (Dollars in thousands) Amount Remainder of 2018 $ 207,697 2019 183,979 2020 65,427 2021 19,000 2022 32,457 Thereafter 11,943 Total $ 520,503

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Summary of Borrowings by Type	The following is a summary of borrowings by type. Short-term borrowings consist of overnight borrowings and term borrowings with an original maturity of one year or less. The long-term debt balances and weighted average interest rates include purchase accounting fair value adjustments, net of related amortization, from the Fox Chase acquisition. At March 31, 2018 At December 31, 2017 (Dollars in thousands) Balance at End of Period Weighted Average Interest Rate at End of Period Balance at End of Period Weighted Average Interest Rate at End of Period Short-term borrowings: FHLB borrowings $ 148,285 1.87 % $ 30,225 1.54 % Federal funds purchased 50,000 1.80 55,000 1.56 Customer repurchase agreements 18,141 0.05 20,206 0.05 Long-term debt: FHLB advances $ 125,021 1.73 % $ 125,036 1.73 % Security repurchase agreements 30,671 1.77 30,792 1.52 Subordinated notes $ 94,392 5.34 % $ 94,331 5.35 %
Schedule of Maturities of Long-term FHLB Advances	Long-term advances with the FHLB of Pittsburgh mature as follows: (Dollars in thousands) As of March 31, 2018 Weighted Average Rate Remainder of 2018 $ 10,021 0.70 % 2019 10,000 1.35 2020 40,000 1.70 2021 55,000 1.94 2022 10,000 2.09 Thereafter — — Total $ 125,021 1.73 %
Schedule of Maturities of Other Long-term Borrowings	Long-term debt under security repurchase agreements with large commercial banks mature as follows: (Dollars in thousands) As of March 31, 2018 Weighted Average Rate Remainder of 2018 $ 10,138 1.29 % 2019 10,228 2.01 2020 10,305 2.01 2021 — — 2022 — — Thereafter — — Total $ 30,671 1.77 %

Retirement Plans and Other Po32

Retirement Plans and Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2018
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Cost (Income)	Components of net periodic benefit cost (income) were as follows: Three Months Ended March 31, 2018 2017 2018 2017 (Dollars in thousands) Retirement Plans Other Post Retirement Service cost $ 140 $ 151 $ 22 $ 12 Interest cost 441 465 23 29 Expected return on plan assets (796 ) (753 ) — — Amortization of net actuarial loss 280 288 1 11 Accretion of prior service cost (71 ) (70 ) — — Net periodic benefit (income) cost $ (6 ) $ 81 $ 46 $ 52

Stock-Based Incentive Plan (Tab

Stock-Based Incentive Plan (Tables)	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Status of Options Granted Under Long-Term Incentive Plan	The following is a summary of the Corporation's stock option activity and related information for the three months ended March 31, 2018 : (Dollars in thousands, except per share data) Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value at March 31, 2018 Outstanding at December 31, 2017 512,735 $ 21.90 Granted 193,778 28.50 Expired — — Forfeited — — Exercised (14,158 ) 18.93 Outstanding at March 31, 2018 692,355 23.81 8.0 $ 2,930 Exercisable at March 31, 2018 302,459 20.19 6.5 2,297
Summary of Nonvested Stock Options	The following is a summary of nonvested stock options at March 31, 2018 including changes during the three months then ended: (Dollars in thousands, except per share data) Nonvested Stock Options Weighted Average Grant Date Fair Value Nonvested stock options at December 31, 2017 352,142 $ 6.47 Granted 193,778 6.46 Vested (156,024 ) 6.45 Forfeited — — Nonvested stock options at March 31, 2018 389,896 6.48
Aggregated Assumptions Used to Estimate Fair Value of Options Granted	The following aggregated assumptions were used to estimate the fair value of options granted during the three months ended March 31, 2018 and 2017 : Three months ended March 31, 2018 2017 Actual Expected option life in years 6.6 6.9 Risk free interest rate 2.80 % 2.30 % Expected dividend yield 2.81 % 2.84 % Expected volatility 27.15 % 29.75 % Fair value of options $6.46 $6.72
Summary of Nonvested Restricted Stock Awards	The following is a summary of nonvested restricted stock awards at March 31, 2018 including changes during the three months then ended: (Dollars in thousands, except per share data) Nonvested Share Awards Weighted Average Grant Date Fair Value Nonvested share awards at December 31, 2017 229,026 $ 21.93 Granted 59,953 28.39 Vested (43,200 ) 18.59 Forfeited (13,750 ) 18.52 Nonvested share awards at March 31, 2018 232,029 24.43
Certain Information Regarding Restricted Stock	The fair value of restricted stock is equivalent to the fair value on the date of grant and is amortized over the vesting period. Certain information regarding restricted stock is summarized below for the periods indicated: Three months ended March 31, (Dollars in thousands, except per share data) 2018 2017 Shares granted 59,953 58,448 Weighted average grant date fair value $ 28.39 $ 28.15 Intrinsic value of awards vested $ 1,193 $ 1,333
Schedule of Unrecognized Compensation Cost, Nonvested Awards	The total unrecognized compensation expense and the weighted average period over which unrecognized compensation expense is expected to be recognized related to nonvested stock options and nonvested restricted stock awards at March 31, 2018 is presented below: (Dollars in thousands) Unrecognized Compensation Cost Weighted-Average Period Remaining (Years) Stock options $ 2,293 2.3 Restricted stock awards 3,374 2.0 $ 5,667 2.1
Compensation Expense Related to Stock Incentive Plans Recognized	The following table presents information related to the Corporation’s compensation expense related to stock incentive plans recognized for the periods indicated: Three months ended March 31, (Dollars in thousands) 2018 2017 Stock-based compensation expense: Stock options $ 228 $ 221 Restricted stock awards 619 610 Employee stock purchase plan 15 15 Total $ 862 $ 846 Tax benefit on nonqualified stock option expense, restricted stock awards and disqualifying dispositions of incentive stock options $ 243 $ 507

Accumulated Other Comprehensi34

Accumulated Other Comprehensive (Loss) Income (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes	The following table shows the components of accumulated other comprehensive (loss) income, net of taxes, for the periods presented: (Dollars in thousands) Net Unrealized Net Change Net Change Accumulated Balance, December 31, 2017 $ (4,061 ) $ 9 $ (13,719 ) $ (17,771 ) Adjustment to initially apply ASU No. 2016-01 for equity securities measured at fair value (1) (433 ) — — (433 ) Adjustment to initially apply ASU No. 2018-02 for reclassification of stranded net tax charges (1) (968 ) 2 (2,955 ) (3,921 ) Other comprehensive (loss) income (5,015 ) 183 166 (4,666 ) Balance, March 31, 2018 $ (10,477 ) $ 194 $ (16,508 ) $ (26,791 ) Balance, December 31, 2016 $ (4,988 ) $ (141 ) $ (14,325 ) $ (19,454 ) Net Change 263 51 148 462 Balance, March 31, 2017 $ (4,725 ) $ (90 ) $ (14,177 ) $ (18,992 )

Derivative Instruments and He35

Derivative Instruments and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amounts and Fair Value of Derivatives Designated as Hedging Instruments	The following table presents the notional amounts and fair values of derivatives designated as hedging instruments recorded on the consolidated balance sheets at March 31, 2018 and December 31, 2017 . The Corporation pledges cash or securities to cover the negative fair value of derivative instruments. Cash collateral associated with derivative instruments are not added to or netted against the fair value amounts. Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At March 31, 2018 Interest rate swap - cash flow hedge $ 17,648 Other assets $ 294 $ — Interest rate swap - fair value hedge 1,377 Other assets 6 — Total $ 19,025 $ 300 $ — At December 31, 2017 Interest rate swap - cash flow hedge $ 17,836 Other assets $ 13 $ — Interest rate swap - fair value hedge 1,388 — Other liabilities 12 Total $ 19,224 $ 13 $ 12
Notional Amounts and Fair Values of Derivatives Not Designated as Hedging Instruments	The following table presents the notional amounts and fair values of derivatives not designated as hedging instruments recorded on the consolidated balance sheets at March 31, 2018 and December 31, 2017 : Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At March 31, 2018 Interest rate swap $ 497 $ — Other liabilities $ 30 Credit derivatives 75,044 — Other liabilities 31 Interest rate locks with customers 26,090 Other assets 395 — Forward loan sale commitments 26,768 Other assets 12 — Total $ 128,399 $ 407 $ 61 At December 31, 2017 Interest rate swap $ 523 $ — Other liabilities $ 38 Credit derivatives 75,622 — Other liabilities 36 Interest rate locks with customers 27,411 Other assets 527 — Forward loan sale commitments 29,037 Other assets 61 — Total $ 132,593 $ 588 $ 74
Income for Derivatives Designated as Hedging Instruments	The following table presents amounts included in the consolidated statements of income for derivatives designated as hedging instruments for the periods indicated: Statement of Income Three Months Ended (Dollars in thousands) 2018 2017 Interest rate swap—cash flow hedge—net interest payments Interest expense $ 20 $ 71 Interest rate swap—fair value hedge—ineffectiveness Other noninterest income — 3 Net loss $ (20 ) $ (68 )
Income for Derivatives Not Designated as Hedging Instruments	Statement of Income Classification Three Months Ended (Dollars in thousands) 2018 2017 Credit derivatives Other noninterest income $ 4 $ 71 Interest rate locks with customers Net gain on mortgage banking activities (132 ) 407 Forward loan sale commitments Net loss on mortgage banking activities (49 ) (254 ) Total $ (177 ) $ 224
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table presents amounts included in accumulated other comprehensive (loss) income for derivatives designated as hedging instruments at March 31, 2018 and December 31, 2017 : (Dollars in thousands) Accumulated Other At March 31, 2018 At December 31, 2017 Interest rate swap—cash flow hedge Fair value, net of taxes $ 193 $ 9 Total $ 193 $ 9

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table presents the assets and liabilities measured at fair value on a recurring basis at March 31, 2018 and December 31, 2017 , classified using the fair value hierarchy: At March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: U.S. government corporations and agencies $ — $ 16,882 $ — $ 16,882 State and political subdivisions — 72,808 — 72,808 Residential mortgage-backed securities — 174,585 — 174,585 Collateralized mortgage obligations — 3,368 — 3,368 Corporate bonds — 71,048 26,922 97,970 Money market mutual funds 11,174 — — 11,174 Total available-for-sale securities 11,174 338,691 26,922 376,787 Equity securities - financial services industry 1,072 — — 1,072 Loans* — — 1,895 1,895 Interest rate swaps* — 300 — 300 Interest rate locks with customers* — 395 — 395 Forward loan sale commitments* — 12 — 12 Total assets $ 12,246 $ 339,398 $ 28,817 $ 380,461 Liabilities: Contingent consideration liability $ — $ — $ 322 $ 322 Interest rate swaps* — 30 — 30 Credit derivatives* — — 31 31 Total liabilities $ — $ 30 $ 353 $ 383 At December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: U.S. government corporations and agencies $ — $ 16,961 $ — $ 16,961 State and political subdivisions — 78,297 — 78,297 Residential mortgage-backed securities — 185,421 — 185,421 Collateralized mortgage obligations — 3,602 — 3,602 Corporate bonds — 79,190 27,986 107,176 Money market mutual funds 5,985 — — 5,985 Equity securities 1,076 — — 1,076 Total available-for-sale securities 7,061 363,471 27,986 398,518 Loans* — — 1,958 1,958 Interest rate swap* — 13 — 13 Interest rate locks with customers* — 527 — 527 Forward loan sale commitments* — 61 — 61 Total assets $ 7,061 $ 364,072 $ 29,944 $ 401,077 Liabilities: Contingent consideration liability $ — $ — $ 339 $ 339 Interest rate swaps* — 50 — 50 Credit derivatives* — — 36 36 Total liabilities $ — $ 50 $ 375 $ 425 * Such financial instruments are recorded at fair value as further described in Note 11, "Derivative Instruments and Hedging Activities.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The following table includes a rollforward of corporate bonds, loans and credit derivatives for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the three months ended March 31, 2018 and 2017 : Three Months Ended March 31, 2018 (Dollars in thousands) Balance at Purchases/additions Sales Payments received Premium amortization, net (Decrease) increase in value Balance at March 31, 2018 Corporate bonds $ 27,986 $ — $ — $ — $ (1,064 ) $ 26,922 Loans 1,958 — — (37 ) — (26 ) 1,895 Credit derivatives (36 ) — — — — 5 (31 ) Net total $ 29,908 $ — $ — $ (37 ) $ — $ (1,085 ) $ 28,786
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table includes a rollforward of corporate bonds, loans and credit derivatives for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the three months ended March 31, 2018 and 2017 : Three Months Ended March 31, 2018 (Dollars in thousands) Balance at Purchases/additions Sales Payments received Premium amortization, net (Decrease) increase in value Balance at March 31, 2018 Corporate bonds $ 27,986 $ — $ — $ — $ (1,064 ) $ 26,922 Loans 1,958 — — (37 ) — (26 ) 1,895 Credit derivatives (36 ) — — — — 5 (31 ) Net total $ 29,908 $ — $ — $ (37 ) $ — $ (1,085 ) $ 28,786
Contingent Consideration Liability Change in Amount	he following table presents the change in the balance of the contingent consideration liability related to acquisitions for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the three months ended March 31, 2018 and 2017 : Three Months Ended March 31, 2018 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at March 31, 2018 Girard Partners $ 339 $ — $ 34 $ 17 $ 322 Total contingent consideration liability $ 339 $ — $ 34 $ 17 $ 322 Three Months Ended March 31, 2017 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at March 31, 2017 Sterner Insurance Associates $ 331 $ — $ — $ — $ 331 Girard Partners 5,668 $ — 5,284 14 398 Total contingent consideration liability $ 5,999 $ — $ 5,284 $ 14 $ 729
Assets Measured at Fair Value on Non-Recurring Basis	The following table represents assets measured at fair value on a non-recurring basis at March 31, 2018 and December 31, 2017 : At March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Impaired loans held for investment $ — $ — $ 39,858 $ 39,858 Impaired leases held for investment — — 1,250 1,250 Other real estate owned — — 1,843 1,843 Total $ — $ — $ 42,951 $ 42,951 At December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Impaired loans held for investment $ — $ — $ 28,351 $ 28,351 Impaired leases held for investment — — 1,250 1,250 Other real estate owned — — 1,843 1,843 Total $ — $ — $ 31,444 $ 31,444
Assets, Liabilities and Off-Balance Sheet Items Not Measured at Fair Value	The following table presents assets and liabilities and off-balance sheet items not measured at fair value on a recurring or non-recurring basis in the Corporation’s consolidated balance sheets but for which the fair value is required to be disclosed at March 31, 2018 and December 31, 2017 . The disclosed fair values are classified using the fair value hierarchy. At March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 48,631 $ — $ — $ 48,631 $ 48,631 Held-to-maturity securities — 82,975 — 82,975 84,393 Federal Home Loan Bank, Federal Reserve Bank and other stock NA NA NA NA 32,801 Loans held for sale — 705 — 705 687 Net loans and leases held for investment — — 3,611,759 3,611,759 3,623,475 Servicing rights — — 11,257 11,257 6,605 Total assets $ 48,631 $ 83,680 $ 3,623,016 $ 3,755,327 $ 3,796,592 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 2,976,790 $ — $ — $ 2,976,790 $ 2,976,790 Time deposits — 519,494 — 519,494 520,503 Total deposits 2,976,790 519,494 — 3,496,284 3,497,293 Short-term borrowings — 216,426 — 216,426 216,426 Long-term debt — 157,109 — 157,109 155,692 Subordinated notes — 97,600 — 97,600 94,392 Total liabilities $ 2,976,790 $ 990,629 $ — $ 3,967,419 $ 3,963,803 Off-Balance-Sheet: Commitments to extend credit $ — $ (2,437 ) $ — $ (2,437 ) $ — At December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 75,409 $ — $ — $ 75,409 $ 75,409 Held-to-maturity securities — 55,320 — 55,320 55,564 Federal Home Loan Bank, Federal Reserve Bank and other stock NA NA NA NA 27,204 Loans held for sale — 1,676 — 1,676 1,642 Net loans and leases held for investment — — 3,547,451 3,547,451 3,566,953 Servicing rights — — 10,046 10,046 6,573 Other real estate owned — — — — — Total assets $ 75,409 $ 56,996 $ 3,557,497 $ 3,689,902 $ 3,733,345 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 2,980,170 $ — $ — $ 2,980,170 $ 2,980,170 Time deposits — 574,737 — 574,737 574,749 Total deposits 2,980,170 574,737 — 3,554,907 3,554,919 Short-term borrowings — 105,431 — 105,431 105,431 Long-term debt — 156,834 — 156,834 155,828 Subordinated notes — 98,075 — 98,075 94,331 Total liabilities $ 2,980,170 $ 935,077 $ — $ 3,915,247 $ 3,910,509 Off-Balance-Sheet: Commitments to extend credit $ — $ (2,414 ) $ — $ (2,414 ) $ —

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting	The following table provides total assets by reportable business segment as of the dates indicated. (Dollars in thousands) At March 31, 2018 At December 31, 2017 At March 31, 2017 Banking $ 4,519,423 $ 4,466,301 $ 4,187,607 Wealth Management 36,848 34,600 31,178 Insurance 28,651 27,846 24,412 Other 29,037 26,115 30,734 Consolidated assets $ 4,613,959 $ 4,554,862 $ 4,273,931 The following tables provide reportable segment-specific information and reconciliations to consolidated financial information for the three months ended March 31, 2018 and 2017 . Three Months Ended March 31, 2018 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Interest income $ 43,522 $ 5 $ — $ 7 $ 43,534 Interest expense 5,001 — — 1,261 6,262 Net interest income 38,521 5 — (1,254 ) 37,272 Provision for loan and lease losses 2,053 — — — 2,053 Noninterest income 4,789 5,740 5,086 (33 ) 15,582 Intangible expenses 329 142 141 — 612 Restructuring charges 571 — — — 571 Other noninterest expense 27,661 3,658 3,245 (622 ) 33,942 Intersegment (revenue) expense* (291 ) 153 138 — — Income (expense) before income taxes 12,987 1,792 1,562 (665 ) 15,676 Income tax expense (benefit) 1,998 545 456 (173 ) 2,826 Net income (loss) $ 10,989 $ 1,247 $ 1,106 $ (492 ) $ 12,850 Capital expenditures $ 970 $ 49 $ 7 $ 55 $ 1,081 Three Months Ended March 31, 2017 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Interest income $ 38,392 $ 1 $ — $ 3 $ 38,396 Interest expense 2,852 — — 1,261 4,113 Net interest income 35,540 1 — (1,258 ) 34,283 Provision for loan and lease losses 2,445 — — — 2,445 Noninterest income 5,162 5,138 4,547 123 14,970 Intangible expenses 396 170 193 — 759 Other noninterest expense 25,055 3,421 3,069 (274 ) 31,271 Intersegment (revenue) expense* (264 ) 146 118 — — Income (expense) before income taxes 13,070 1,402 1,167 (861 ) 14,778 Income tax expense (benefit) 3,527 526 492 (623 ) 3,922 Net income (loss) $ 9,543 $ 876 $ 675 $ (238 ) $ 10,856 Capital expenditures $ 4,320 $ 11 $ 7 $ 50 $ 4,388 * Includes an allocation of general and administrative expenses from both the parent holding company and the Bank. These expenses are generally allocated based upon number of employees and square footage utilized.

Revenue From Contracts with C38

Revenue From Contracts with Customers Revenue From Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following tables disaggregate the Corporation's revenue by major source for the three months ended March 31, 2018 and 2017 . Three Months Ended March 31, 2018 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Net interest income (1) $ 38,521 $ 5 $ — $ (1,254 ) $ 37,272 Noninterest income: Trust fee income — 1,996 — — 1,996 Service charges on deposit accounts 1,327 — — — 1,327 Investment advisory commission and fee income — 3,683 — — 3,683 Insurance commission and fee income — — 4,888 — 4,888 Other service fee income (2) 1,909 60 200 — 2,169 Bank owned life insurance income (1) 698 — — (29 ) 669 Net gain on sales of investment securities (1) 10 — — — 10 Net gain on mortgage banking activities (1) 716 — — — 716 Other income (2) 129 1 (2 ) (4 ) 124 Total noninterest income $ 4,789 $ 5,740 $ 5,086 $ (33 ) $ 15,582 Three Months Ended March 31, 2017 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated Net interest income (1) $ 35,540 $ 1 $ — $ (1,258 ) $ 34,283 Noninterest income: Trust fee income — 1,907 — — 1,907 Service charges on deposit accounts 1,243 — — — 1,243 Investment advisory commission and fee income — 3,181 — — 3,181 Insurance commission and fee income — — 4,410 — 4,410 Other service fee income (2) 1,801 50 136 — 1,987 Bank owned life insurance income (1) 662 — — 121 783 Net gain on sales of investment securities (1) 13 — — 2 15 Net gain on mortgage banking activities (1) 1,113 — — — 1,113 Other income (2) 330 — 1 — 331 Total noninterest income $ 5,162 $ 5,138 $ 4,547 $ 123 $ 14,970 (1) Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of the standard. Noninterest income streams that are out-of-scope of the standard include bank owned life insurance income, sales of investment securities and mortgage banking activities. (2) Other service fee income and other income include certain items that are in scope and certain items that are out of scope of the standard and are described further in the following paragraphs.

Restructuring Charges Restructu

Restructuring Charges Restructuring Charges (Tables)	3 Months Ended
	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Roll-Forward of Accrued Restructuring Expense	A roll-forward of the remaining accrued restructuring expense for the three months ended March 31, 2018 is as follows: (Dollars in thousands) Severance expenses Write-downs and retirements of fixed assets Lease cancellations Total Accrued at January 1, 2018 $ — $ — $ 23 $ 23 Restructuring charges 366 48 157 571 Payments (70 ) — (8 ) (78 ) Accrued at March 31, 2018 $ 296 $ 48 $ 172 $ 516

Summary of Significant Accoun40

Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]
Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect	$ 3,900
Equity Securities [Member]
Summary Of Significant Accounting Policies [Line Items]
Equity Securities Available-for-Sale, Fair Value		$ 1,076
Equity Securities Available-for-Sale, Unrealized net gain		666
Available-for-sale Securities, Accumulated Net Gain Net of Income Taxes		$ 433
Other Noninterest Income [Member] | Equity Securities [Member]
Summary Of Significant Accounting Policies [Line Items]
Net realized loss on investment securities	$ (4)

Earnings per Share - Basic and

Earnings per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share, Basic and Diluted [Abstract]
Net income	$ 12,850	$ 10,856
Net income allocated to unvested restricted stock	(97)	(113)
Net income allocated to common shares	$ 12,753	$ 10,743
Weighted average shares outstanding	29,355	26,631
Average unvested restricted stock	(215)	(286)
Denominator for basic earnings per share—weighted-average shares outstanding	29,140	26,345
Effect of dilutive securities—employee stock options	94	103
Denominator for diluted earnings per share—adjusted weighted-average shares outstanding	29,234	26,448
Basic earnings per share	$ 0.44	$ 0.41
Diluted earnings per share	$ 0.44	$ 0.41
Average anti-dilutive options excluded from computation of diluted earnings per share	217	126

Investment Securities - Narrati

Investment Securities - Narrative (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Investment	Dec. 31, 2017USD ($)Investment
Schedule of Available-for-sale Securities [Line Items]
Carrying value of securities pledged to secure public deposits and other contractual obligations	$ 362,500	$ 345,100
Pledging requirements for credit derivatives and SWAP agreements - securities	$ 300	$ 1,800
Number of investments in non-federal issuer representing more than 10% of shareholders' equity | Investment	0	0
Maximum investment in any single non-federal issuer representing shareholders' equity	10.00%	10.00%
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 12,032	$ 6,714
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	129
U.S. Government Corporations and Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 105	90
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	4
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 6,684	3,459
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	13
Mortgage-Backed Securities [Domain]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 5,200
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	105
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 51	32
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	7
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ 0
Unrealized Loss on Securities	$ (4)
Other Noninterest Income [Member] | Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Net realized loss on investment securities	$ (4)

Investment Securities - Held-to

Investment Securities - Held-to-Maturity and Available-for-Sale, Scheduled Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Held-to-maturity Securities [Abstract]
Securities Held-to-Maturity, Amortized Cost	$ 84,393	$ 55,564
Securities Held-to-Maturity, Gross Unrealized Gains	0	44
Securities Held-to-Maturity, Gross Unrealized Losses	(1,418)	(288)
Securities Held-to-Maturity, Fair Value	82,975	55,320
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost	390,049	404,766
Securities Available-for-Sale, Gross Unrealized Gain	601	1,822
Securities Available-for-Sale, Gross Unrealized Loss	(13,863)	(8,070)
Securities Available-for-Sale, Fair Value	376,787	398,518
U.S. Government Corporations and Agencies [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	6,527	1,499
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	0	0
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	(40)	(3)
Securities Available-for-Sale, Fair Value, Within 1 year	6,487	1,496
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	10,519	15,590
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(124)	(125)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	10,395	15,465
Securities Available-for-Sale, Amortized Cost	17,046	17,089
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	0	0
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(164)	(128)
Securities Available-for-Sale, Debt Securities, Fair Value	16,882	16,961
State and Political Subdivisions [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	5,824	2,721
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	0	1
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	(9)	(6)
Securities Available-for-Sale, Fair Value, Within 1 year	5,815	2,716
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	13,997	16,787
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	28	33
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(58)	(44)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	13,967	16,776
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	49,935	54,846
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	508	897
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(453)	(73)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	49,990	55,670
Securities Available-for-Sale, Amortized Cost, Over 10 years	3,120	3,120
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	0	15
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(84)	0
Securities Available-for-Sale, Fair Value, Over 10 years	3,036	3,135
Securities Available-for-Sale, Amortized Cost	72,876	77,474
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	536	946
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(604)	(123)
Securities Available-for-Sale, Debt Securities, Fair Value	72,808	78,297
Residential Mortgage Backed Securities [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	3,969	3,913
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	2	12
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(57)	(26)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	3,914	3,899
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	54,753	51,428
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	5
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(1,691)	(852)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	53,062	50,581
Securities Available-for-Sale, Amortized Cost, Over 10 years	121,722	133,237
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	50	87
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(4,163)	(2,383)
Securities Available-for-Sale, Fair Value, Over 10 years	117,609	130,941
Securities Available-for-Sale, Amortized Cost	180,444	188,578
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	52	104
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(5,911)	(3,261)
Securities Available-for-Sale, Debt Securities, Fair Value	174,585	185,421
Collateralized Mortgage Obligations [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	1,999	2,103
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(100)	(82)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	1,899	2,021
Securities Available-for-Sale, Amortized Cost, Over 10 years	1,485	1,567
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	0	14
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(16)	0
Securities Available-for-Sale, Fair Value, Over 10 years	1,469	1,581
Securities Available-for-Sale, Amortized Cost	3,484	3,670
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	0	14
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(116)	(82)
Securities Available-for-Sale, Debt Securities, Fair Value	3,368	3,602
Corporate Bonds [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	5,016	10,006
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	0	0
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	(19)	(5)
Securities Available-for-Sale, Fair Value, Within 1 year	4,997	10,001
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	23,845	24,885
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	13	20
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(436)	(147)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	23,422	24,758
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	16,164	16,669
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	71
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(458)	(296)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	15,706	16,444
Securities Available-for-Sale, Amortized Cost, Over 10 years	60,000	60,000
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(6,155)	(4,027)
Securities Available-for-Sale, Fair Value, Over 10 years	53,845	55,973
Securities Available-for-Sale, Amortized Cost	105,025	111,560
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	13	91
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	(7,068)	(4,475)
Securities Available-for-Sale, Debt Securities, Fair Value	97,970	107,176
Money Market Mutual Funds [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost	11,174	5,985
Securities Available-for-Sale, Debt Securities, Gross Unrealized Gain	0	0
Securities Available-for-Sale, Debt Securities, Gross Unrealized Losses	0	0
Securities Available-for-Sale, Debt Securities, Fair Value	11,174	5,985
Equity Securities [Member]
Available-for-sale Securities [Abstract]
Equity Securities Available-for-Sale, Amortized Cost		410
Equity Securities Available-for-Sale, Gross Unrealized Gains		667
Equity Securities Available-for-Sale, Gross Unrealized Loss		(1)
Equity Securities Available-for-Sale, Fair Value		1,076
U.S. Government Corporations and Agencies [Member]
Held-to-maturity Securities [Abstract]
Securities Held-to-Maturity, Amortized Cost, After 1 year to 5 years	6,996	6,995
Securities Held-to-Maturity, Gross Unrealized Gains, After 1 year to 5 years	0	0
Securities Held-to-Maturity, Gross Unrealized Losses, After 1 year to 5 years	(169)	(77)
Securities Held-to-Maturity, Fair Value, After 1 year to 5 years	6,827	6,918
Securities Held-to-Maturity, Amortized Cost	6,996	6,995
Securities Held-to-Maturity, Gross Unrealized Gains	0	0
Securities Held-to-Maturity, Gross Unrealized Losses	(169)	(77)
Securities Held-to-Maturity, Fair Value	6,827	6,918
Residential Mortgage Backed Securities [Member]
Held-to-maturity Securities [Abstract]
Securities Held-to-Maturity, Amortized Cost, After 5 years to 10 years	13,495	8,944
Securities Held-to-Maturity, Gross Unrealized Gains, After 5 years to 10 years	0	0
Securities Held-to-Maturity, Gross Unrecognized Losses, After 5 years to 10 years	(157)	(51)
Securities Held-to-Maturity, Fair Value, After 5 years to 10 years	13,338	8,893
Securities Held-to-Maturity, Amortized Cost, Over 10 years	63,902	39,625
Securities Held-to-Maturity, Gross Unrealized Gain, Over 10 years	0	44
Securities Held-to-Maturity, Gross Unrealized Losses, Over 10 years	(1,092)	(160)
Securities Held-to-Maturity, Fair Value, After 10 Years	62,810	39,509
Securities Held-to-Maturity, Amortized Cost	77,397	48,569
Securities Held-to-Maturity, Gross Unrealized Gains	0	44
Securities Held-to-Maturity, Gross Unrealized Losses	(1,249)	(211)
Securities Held-to-Maturity, Fair Value	$ 76,148	$ 48,402

Investment Securities - Informa

Investment Securities - Information Related to Sales of Securities Available-for-Sale (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Securities available-for-sale:
Proceeds from sales	$ 1,010	$ 1,762
Gross realized gains on sales	10	15
Tax expense related to net realized gains on sales	$ 2	$ 5

Investment Securities - Amount

Investment Securities - Amount of Securities in Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	$ 82,975	$ 47,800
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,418)	(288)
Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total, Fair Value	82,975	47,800
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,418)	(288)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	101,507	74,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,831)	(1,356)
Twelve Months or Longer, Fair Value	225,817	233,434
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(12,032)	(6,714)
Total, Fair Value	327,324	307,785
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(13,863)	(8,070)
U.S. Government Corporations and Agencies [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	6,826	6,919
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(169)	(77)
Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total, Fair Value	6,826	6,919
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(169)	(77)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	5,155	5,213
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(59)	(38)
Twelve Months or Longer, Fair Value	11,727	11,749
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(105)	(90)
Total, Fair Value	16,882	16,962
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(164)	(128)
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	35,367	18,457
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(553)	(91)
Twelve Months or Longer, Fair Value	6,310	6,332
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(51)	(32)
Total, Fair Value	41,677	24,789
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(604)	(123)
Residential Mortgage-Backed Securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	76,149	40,881
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,249)	(211)
Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total, Fair Value	76,149	40,881
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,249)	(211)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	36,274	32,217
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(819)	(210)
Twelve Months or Longer, Fair Value	134,167	141,371
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5,092)	(3,051)
Total, Fair Value	170,441	173,588
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(5,911)	(3,261)
Collateralized Mortgage Obligations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	1,469	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(16)	0
Twelve Months or Longer, Fair Value	1,899	2,021
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(100)	(82)
Total, Fair Value	3,368	2,021
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(116)	(82)
Corporate Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value	23,242	18,464
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(384)	(1,016)
Twelve Months or Longer, Fair Value	71,714	71,957
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(6,684)	(3,459)
Total, Fair Value	94,956	90,421
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (7,068)	(4,475)
Equity Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than Twelve Months, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(1)
Twelve Months or Longer, Fair Value		4
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Total, Fair Value		4
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (1)

Loans and Leases - Narrative (D

Loans and Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	$ 499,310	$ 538,780
Carrying amount	1,525	1,583
Nonaccrual Loans and Leases	27,694	14,517
Other accruing impaired loans	3,300	4,100
Specific reserves for other accruing impaired loans	28	99
Impaired loans with no related reserve, Recorded Investment	25,402	27,454
Impaired Financing Receivable, Related Reserve	$ 732	131
Maximum modification period on short-term basis	1 year
Restructured loan past due period	90 days
Lease Financings [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	$ 0	0
Nonaccrual Loans and Leases	1,680	1,599
Impaired loans with no related reserve, Recorded Investment	1,300	1,300
Impaired Financing Receivable, Related Reserve	0	$ 0
Fox Chase Bank [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	400,100
Carrying amount	733
Valley Green Bank [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable Net of Deferred Income, Acquired	99,200
Carrying amount	792
Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Amount of Loan Relationship Balance, Loans Reviewed Annually	1,000
Amount of Loan Relationship Balance, Reviewed Quarterly	15,000
Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Amount of Loan Relationship Balance, Loans Reviewed on a Performance Basis	$ 1,000

Loans and Leases - Summary of M

Loans and Leases - Summary of Major Loan and Lease Categories (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	$ 3,190,578	$ 3,081,287
Total Loans and Leases Held for Investment, Acquired	499,310	538,780
Total Loans and Leases Held for Investment	3,689,888	3,620,067	$ 3,341,916
Unearned Lease Income, Originated	(14,153)	(14,243)
Unearned Lease Income, Acquired	0	0
Unearned lease income, included in the above table	(14,153)	(14,243)
Net deferred costs, Originated	4,436	4,669
Net deferred costs, Acquired	0	0
Net deferred costs, included in the above table	4,436	4,669
Overdraft Deposits, Originated	396	222
Overdraft Deposits, Acquired	0	0
Overdraft deposits included in the above table	396	222
Commercial, Financial and Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	856,250	833,100
Total Loans and Leases Held for Investment, Acquired	51,688	63,111
Total Loans and Leases Held for Investment	907,938	896,211	840,971
Real Estate-Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	1,293,496	1,235,681
Total Loans and Leases Held for Investment, Acquired	291,324	306,460
Total Loans and Leases Held for Investment	1,584,820	1,542,141
Real Estate-Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	180,681	171,244
Total Loans and Leases Held for Investment, Acquired	4,452	4,592
Total Loans and Leases Held for Investment	185,133	175,836
Real Estate-Residential Secured for Business Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	251,188	250,800
Total Loans and Leases Held for Investment, Acquired	82,173	91,167
Total Loans and Leases Held for Investment	333,361	341,967	292,232
Real Estate Residential Secured For Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	278,990	260,654
Total Loans and Leases Held for Investment, Acquired	58,183	60,920
Total Loans and Leases Held for Investment	337,173	321,574
Real Estate-Home Equity Secured for Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	172,121	171,884
Total Loans and Leases Held for Investment, Acquired	11,347	12,386
Total Loans and Leases Held for Investment	183,468	184,270
Loans to Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	28,112	28,156
Total Loans and Leases Held for Investment, Acquired	143	144
Total Loans and Leases Held for Investment	28,255	28,300	28,063
Lease Financings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans and Leases Held for Investment, Originated	129,740	129,768
Total Loans and Leases Held for Investment, Acquired	0	0
Total Loans and Leases Held for Investment	$ 129,740	$ 129,768	$ 132,864

Loans and Leases - Acquired Cre

Loans and Leases - Acquired Credit Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Receivables [Abstract]
Outstanding principal balance	$ 2,197		$ 2,325
Carrying amount	1,525		1,583
Allowance for loan losses	0		$ 0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning of period	11	$ 50
Reclassification from nonaccretable discount	81	107
Accretable discount amortized to interest income	(87)	(116)
Disposals	0	(4)
End of period	$ 5	$ 37

Loans and Leases - Age Analysis

Loans and Leases - Age Analysis of Past Due Loans and Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	$ 22,749	$ 25,143
Current	3,665,614	3,593,341
Acquired Credit Impaired	1,525	1,583
Loans and leases held for investment	3,689,888	3,620,067	$ 3,341,916
Recorded Investment 90 Days or more Past Due and Accruing Interest	2,295	761
Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	1,525	1,583
Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	10,847	13,682
Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,123	4,285
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	10,779	7,176
Commercial, Financial and Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	3,613	5,131
Current	903,947	890,658
Loans and leases held for investment	907,938	896,211	840,971
Recorded Investment 90 Days or more Past Due and Accruing Interest	0	0
Commercial, Financial and Agricultural [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	378	422
Commercial, Financial and Agricultural [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	663	2,182
Commercial, Financial and Agricultural [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	187	1,440
Commercial, Financial and Agricultural [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	2,763	1,509
Real Estate-Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	6,085	2,691
Current	1,578,379	1,539,094
Loans and leases held for investment	1,584,820	1,542,141
Recorded Investment 90 Days or more Past Due and Accruing Interest	0	0
Real Estate-Commercial [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	356	356
Real Estate-Commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,564	733
Real Estate-Commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	174	548
Real Estate-Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	4,347	1,410
Real Estate-Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,168	2,335
Current	183,965	173,501
Loans and leases held for investment	185,133	175,836
Recorded Investment 90 Days or more Past Due and Accruing Interest	0	0
Real Estate-Construction [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	0	0
Real Estate-Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,168	1,970
Real Estate-Construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	0	0
Real Estate-Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	0	365
Real Estate-Residential Secured for Business Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	2,126	3,321
Current	330,649	338,061
Loans and leases held for investment	333,361	341,967	292,232
Recorded Investment 90 Days or more Past Due and Accruing Interest	0	162
Real Estate-Residential Secured for Business Purpose [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	586	585
Real Estate-Residential Secured for Business Purpose [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,164	1,651
Real Estate-Residential Secured for Business Purpose [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	0	315
Real Estate-Residential Secured for Business Purpose [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	962	1,355
Real Estate Residential Secured For Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	4,401	5,509
Current	332,567	315,845
Loans and leases held for investment	337,173	321,574
Recorded Investment 90 Days or more Past Due and Accruing Interest	569	0
Real Estate Residential Secured For Personal Purpose [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	205	220
Real Estate Residential Secured For Personal Purpose [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	3,575	4,368
Real Estate Residential Secured For Personal Purpose [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	0	1,118
Real Estate Residential Secured For Personal Purpose [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	826	23
Real Estate-Home Equity Secured for Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	2,519	2,211
Current	180,949	182,059
Loans and leases held for investment	183,468	184,270
Recorded Investment 90 Days or more Past Due and Accruing Interest	955	148
Real Estate-Home Equity Secured for Personal Purpose [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	0	0
Real Estate-Home Equity Secured for Personal Purpose [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,335	1,414
Real Estate-Home Equity Secured for Personal Purpose [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	74	333
Real Estate-Home Equity Secured for Personal Purpose [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,110	464
Loans to Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	850	555
Current	27,405	27,745
Loans and leases held for investment	28,255	28,300	28,063
Recorded Investment 90 Days or more Past Due and Accruing Interest	644	195
Loans to Individuals [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	0	0
Loans to Individuals [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	153	221
Loans to Individuals [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	53	139
Loans to Individuals [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	644	195
Lease Financings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,987	3,390
Current	127,753	126,378
Loans and leases held for investment	129,740	129,768	$ 132,864
Recorded Investment 90 Days or more Past Due and Accruing Interest	127	256
Lease Financings [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired Credit Impaired	0	0
Lease Financings [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,225	1,143
Lease Financings [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	635	392
Lease Financings [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	$ 127	$ 1,855

Loans and Leases - Nonperformin

Loans and Leases - Nonperforming Loans and Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)borrowers	Mar. 31, 2018USD ($)
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	$ 27,454	$ 25,402
Nonaccrual Loans and Leases	14,517	27,694
Accruing Troubled Debt Restructured Loans And Lease Modifications	11,435	1,032
Loans and Leases 90 Days or more Past Due and Accruing Interest	761	2,295
Total Nonperforming Loans and Leases	26,713	31,021
Nonaccrual Troubled Debt Restructured Loans And Lease Modifications	$ 2,500	1,700
Number of Borrowers | borrowers	1
Impaired Financing Receivable, Related Reserve	$ 131	732
Commercial, Financial and Agricultural [Member]
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	7,019	4,683
Nonaccrual Loans and Leases	4,448	4,192
Accruing Troubled Debt Restructured Loans And Lease Modifications	921	796
Loans and Leases 90 Days or more Past Due and Accruing Interest	0	0
Total Nonperforming Loans and Leases	5,369	4,988
Impaired Financing Receivable, Related Reserve	31	34
Real Estate-Commercial [Member]
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	15,621	17,738
Nonaccrual Loans and Leases	4,285	19,014
Accruing Troubled Debt Restructured Loans And Lease Modifications	10,266	0
Loans and Leases 90 Days or more Past Due and Accruing Interest	0	0
Total Nonperforming Loans and Leases	14,551	19,014
Impaired Financing Receivable, Related Reserve	99	684
Real Estate-Construction [Member]
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	365	0
Nonaccrual Loans and Leases	365	0
Accruing Troubled Debt Restructured Loans And Lease Modifications	0	0
Loans and Leases 90 Days or more Past Due and Accruing Interest	0	0
Total Nonperforming Loans and Leases	365	0
Impaired Financing Receivable, Related Reserve	0	0
Real Estate-Residential Secured for Business Purpose [Member]
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	3,430	1,697
Nonaccrual Loans and Leases	2,843	1,565
Accruing Troubled Debt Restructured Loans And Lease Modifications	206	195
Loans and Leases 90 Days or more Past Due and Accruing Interest	162	0
Total Nonperforming Loans and Leases	3,211	1,760
Impaired Financing Receivable, Related Reserve	1	14
Real Estate-Residential Secured for Personal Purpose [Member]
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	508	635
Nonaccrual Loans and Leases	466	594
Accruing Troubled Debt Restructured Loans And Lease Modifications	42	41
Loans and Leases 90 Days or more Past Due and Accruing Interest	0	569
Total Nonperforming Loans and Leases	508	1,204
Impaired Financing Receivable, Related Reserve	0	0
Real Estate-Home Equity Secured for Personal Purpose [Member]
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	511	649
Nonaccrual Loans and Leases	511	649
Accruing Troubled Debt Restructured Loans And Lease Modifications	0	0
Loans and Leases 90 Days or more Past Due and Accruing Interest	148	955
Total Nonperforming Loans and Leases	659	1,604
Impaired Financing Receivable, Related Reserve	0	0
Loans to Individuals [Member]
Nonperforming Loans and Leases [Line Items]
Nonaccrual Loans and Leases	0	0
Accruing Troubled Debt Restructured Loans And Lease Modifications	0	0
Loans and Leases 90 Days or more Past Due and Accruing Interest	195	644
Total Nonperforming Loans and Leases	195	644
Lease Financings [Member]
Nonperforming Loans and Leases [Line Items]
Impaired loans with no related reserve, Recorded Investment	1,300	1,300
Nonaccrual Loans and Leases	1,599	1,680
Accruing Troubled Debt Restructured Loans And Lease Modifications	0	0
Loans and Leases 90 Days or more Past Due and Accruing Interest	256	127
Total Nonperforming Loans and Leases	1,855	1,807
Impaired Financing Receivable, Related Reserve	0	0
Non-Accrual [Member] | Real Estate-Commercial [Member]
Nonperforming Loans and Leases [Line Items]
Nonaccrual Loans and Leases		12,300
Impaired Financing Receivable, Related Reserve		$ 656
Amortization Period Extension [Member] | Accrual Troubled Debt Restructuring Loans [Member]
Nonperforming Loans and Leases [Line Items]
Pre- Restructuring Outstanding Recorded Investment	$ 10,300

Loans and Leases - Credit Quali

Loans and Leases - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	$ 3,190,578	$ 3,081,287
Total Loans and Leases Held for Investment, Acquired	499,310	538,780
Grade: 1. Cash secured/ 2. Fully secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	20,591	22,941
Total Loans and Leases Held for Investment, Acquired	1,125	1,120
Grade: 3. Strong [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	16,789	11,027
Total Loans and Leases Held for Investment, Acquired	0	0
Grade: 4. Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	45,381	57,507
Total Loans and Leases Held for Investment, Acquired	581	607
Grade: 5. Acceptable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	1,895,299	1,846,112
Total Loans and Leases Held for Investment, Acquired	280,828	306,841
Grade: 6. Pre-watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	554,464	491,740
Total Loans and Leases Held for Investment, Acquired	122,743	125,613
Grade: 7. Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	23,593	18,689
Total Loans and Leases Held for Investment, Acquired	5,395	18,035
Grade: 8. Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	25,498	42,809
Total Loans and Leases Held for Investment, Acquired	18,965	13,114
Grade: 9. Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Grade: 10. Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Internally Assigned Grades [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	2,581,615	2,490,825
Total Loans and Leases Held for Investment, Acquired	429,637	465,330
Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	605,355	587,990
Total Loans and Leases Held for Investment, Acquired	68,022	72,705
Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	3,608	2,472
Total Loans and Leases Held for Investment, Acquired	1,651	745
Performing and Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	608,963	590,462
Total Loans and Leases Held for Investment, Acquired	69,673	73,450
Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	856,250	833,100
Total Loans and Leases Held for Investment, Acquired	51,688	63,111
Commercial, Financial and Agricultural [Member] | Grade: 1. Cash secured/ 2. Fully secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	2,257	2,521
Total Loans and Leases Held for Investment, Acquired	1,125	1,120
Commercial, Financial and Agricultural [Member] | Grade: 3. Strong [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	15,010	9,206
Total Loans and Leases Held for Investment, Acquired	0	0
Commercial, Financial and Agricultural [Member] | Grade: 4. Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	19,252	30,283
Total Loans and Leases Held for Investment, Acquired	118	125
Commercial, Financial and Agricultural [Member] | Grade: 5. Acceptable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	605,721	593,205
Total Loans and Leases Held for Investment, Acquired	39,143	49,949
Commercial, Financial and Agricultural [Member] | Grade: 6. Pre-watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	196,721	179,990
Total Loans and Leases Held for Investment, Acquired	8,496	6,183
Commercial, Financial and Agricultural [Member] | Grade: 7. Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	6,939	4,027
Total Loans and Leases Held for Investment, Acquired	891	1,007
Commercial, Financial and Agricultural [Member] | Grade: 8. Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	10,350	13,868
Total Loans and Leases Held for Investment, Acquired	1,915	4,727
Commercial, Financial and Agricultural [Member] | Grade: 9. Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Commercial, Financial and Agricultural [Member] | Grade: 10. Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Commercial, Financial and Agricultural [Member] | Internally Assigned Grades [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	856,250	833,100
Total Loans and Leases Held for Investment, Acquired	51,688	63,111
Real Estate-Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	1,293,496	1,235,681
Total Loans and Leases Held for Investment, Acquired	291,324	306,460
Real Estate-Commercial [Member] | Grade: 1. Cash secured/ 2. Fully secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	399	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Commercial [Member] | Grade: 3. Strong [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	1,779	1,821
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Commercial [Member] | Grade: 4. Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	25,858	26,950
Total Loans and Leases Held for Investment, Acquired	463	482
Real Estate-Commercial [Member] | Grade: 5. Acceptable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	1,001,237	960,258
Total Loans and Leases Held for Investment, Acquired	173,731	183,490
Real Estate-Commercial [Member] | Grade: 6. Pre-watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	239,815	209,844
Total Loans and Leases Held for Investment, Acquired	97,057	98,977
Real Estate-Commercial [Member] | Grade: 7. Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	13,117	12,974
Total Loans and Leases Held for Investment, Acquired	4,504	17,028
Real Estate-Commercial [Member] | Grade: 8. Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	11,291	23,834
Total Loans and Leases Held for Investment, Acquired	15,569	6,483
Real Estate-Commercial [Member] | Grade: 9. Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Commercial [Member] | Grade: 10. Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Commercial [Member] | Internally Assigned Grades [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	1,293,496	1,235,681
Total Loans and Leases Held for Investment, Acquired	291,324	306,460
Real Estate-Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	180,681	171,244
Total Loans and Leases Held for Investment, Acquired	4,452	4,592
Real Estate-Construction [Member] | Grade: 1. Cash secured/ 2. Fully secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	17,935	20,420
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Grade: 3. Strong [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Grade: 4. Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Grade: 5. Acceptable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	73,203	76,899
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Grade: 6. Pre-watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	87,030	72,168
Total Loans and Leases Held for Investment, Acquired	4,452	4,592
Real Estate-Construction [Member] | Grade: 7. Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	2,513	1,392
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Grade: 8. Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	365
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Grade: 9. Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Grade: 10. Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Construction [Member] | Internally Assigned Grades [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	180,681	171,244
Total Loans and Leases Held for Investment, Acquired	4,452	4,592
Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	251,188	250,800
Total Loans and Leases Held for Investment, Acquired	82,173	91,167
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 1. Cash secured/ 2. Fully secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 3. Strong [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 4. Satisfactory [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	271	274
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 5. Acceptable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	215,138	215,750
Total Loans and Leases Held for Investment, Acquired	67,954	73,402
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 6. Pre-watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	30,898	29,738
Total Loans and Leases Held for Investment, Acquired	12,738	15,861
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 7. Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	1,024	296
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 8. Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	3,857	4,742
Total Loans and Leases Held for Investment, Acquired	1,481	1,904
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 9. Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 10. Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	0	0
Total Loans and Leases Held for Investment, Acquired	0	0
Real Estate-Residential Secured for Business Purpose [Member] | Internally Assigned Grades [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	251,188	250,800
Total Loans and Leases Held for Investment, Acquired	82,173	91,167
Real Estate Residential Secured For Personal Purpose [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	278,990	260,654
Total Loans and Leases Held for Investment, Acquired	58,183	60,920
Real Estate Residential Secured For Personal Purpose [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	278,357	260,589
Total Loans and Leases Held for Investment, Acquired	57,612	60,477
Real Estate Residential Secured For Personal Purpose [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	633	65
Total Loans and Leases Held for Investment, Acquired	571	443
Real Estate Residential Secured For Personal Purpose [Member] | Performing and Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	278,990	260,654
Total Loans and Leases Held for Investment, Acquired	58,183	60,920
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	172,121	171,884
Total Loans and Leases Held for Investment, Acquired	11,347	12,386
Real Estate-Home Equity Secured for Personal Purpose [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	171,597	171,527
Total Loans and Leases Held for Investment, Acquired	10,267	12,084
Real Estate-Home Equity Secured for Personal Purpose [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	524	357
Total Loans and Leases Held for Investment, Acquired	1,080	302
Real Estate-Home Equity Secured for Personal Purpose [Member] | Performing and Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	172,121	171,884
Total Loans and Leases Held for Investment, Acquired	11,347	12,386
Loans to Individuals [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	28,112	28,156
Total Loans and Leases Held for Investment, Acquired	143	144
Loans to Individuals [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	27,468	27,961
Total Loans and Leases Held for Investment, Acquired	143	144
Loans to Individuals [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	644	195
Total Loans and Leases Held for Investment, Acquired	0	0
Loans to Individuals [Member] | Performing and Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	28,112	28,156
Total Loans and Leases Held for Investment, Acquired	143	144
Lease Financings [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	129,740	129,768
Total Loans and Leases Held for Investment, Acquired	0	0
Lease Financings [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	127,933	127,913
Total Loans and Leases Held for Investment, Acquired	0	0
Lease Financings [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	1,807	1,855
Total Loans and Leases Held for Investment, Acquired	0	0
Lease Financings [Member] | Performing and Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans and Leases Held for Investment, Originated	129,740	129,768
Total Loans and Leases Held for Investment, Acquired	$ 0	$ 0

Loans and Leases - Reserve for

Loans and Leases - Reserve for Loan and Lease Losses Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 21,555	$ 17,499
Charge-offs	(869)	(697)
Recoveries	671	281
Provision (recovery of provision)	2,052	2,442
Provision for acquired credit impaired loans	1	3
Ending balance	23,410	19,528
Commercial, Financial and Agricultural [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,742	7,037
Charge-offs	(601)	(178)
Recoveries	226	187
Provision (recovery of provision)	575	844
Provision for acquired credit impaired loans	0	0
Ending balance	6,942	7,890
Real Estate-Commercial and Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,839	7,505
Charge-offs	(40)	0
Recoveries	73	3
Provision (recovery of provision)	1,306	116
Provision for acquired credit impaired loans	0	0
Ending balance	11,178	7,624
Real Estate-Residential Secured for Business Purpose [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,661	774
Charge-offs	0	(42)
Recoveries	251	10
Provision (recovery of provision)	(41)	603
Provision for acquired credit impaired loans	0	0
Ending balance	1,871	1,345
Real Estate-Residential and Home Equity Secured for Personal Purpose [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,754	993
Charge-offs	0	(94)
Recoveries	57	17
Provision (recovery of provision)	96	82
Provision for acquired credit impaired loans	1	3
Ending balance	1,908	1,001
Loans to Individuals [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	373	364
Charge-offs	(92)	(126)
Recoveries	30	35
Provision (recovery of provision)	61	62
Provision for acquired credit impaired loans	0	0
Ending balance	372	335
Lease Financings [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,132	788
Charge-offs	(136)	(257)
Recoveries	34	29
Provision (recovery of provision)	49	769
Provision for acquired credit impaired loans	0	0
Ending balance	1,079	1,329
Unallocated Financing Receivables [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	54	38
Provision (recovery of provision)	6	(34)
Provision for acquired credit impaired loans	0	0
Ending balance	$ 60	$ 4

Loans and Leases - Reserve fo53

Loans and Leases - Reserve for Loan and Lease Losses and Recorded Investment in Loans and Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment	$ 732		$ 979
Ending balance: collectively evaluated for impairment	22,388		18,549
Ending balance: acquired credit impaired loans evaluated for impairment	290
Total ending balance	23,410	$ 21,555	19,528	$ 17,499
Loans and leases held for investment:
Ending balance: individually evaluated for impairment	41,840		42,435
Ending balance: collectively evaluated for impairment	3,146,843		2,606,486
Loans measured at fair value	1,895		2,092
Acquired non-credit impaired loans	497,785		684,287
Acquired credit impaired loans	1,525		6,616
Total Loans and Leases Held for Investment	3,689,888	3,620,067	3,341,916
Commercial, Financial and Agricultural [Member]
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment	34		8
Ending balance: collectively evaluated for impairment	6,776		7,882
Ending balance: acquired credit impaired loans evaluated for impairment	132
Total ending balance	6,942	6,742	7,890	7,037
Loans and leases held for investment:
Ending balance: individually evaluated for impairment	6,560		9,524
Ending balance: collectively evaluated for impairment	849,690		740,818
Loans measured at fair value	0		0
Acquired non-credit impaired loans	51,310		90,069
Acquired credit impaired loans	378		560
Total Loans and Leases Held for Investment	907,938	896,211	840,971
Real Estate-Commercial and Construction [Member]
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment	684		26
Ending balance: collectively evaluated for impairment	10,378		7,598
Ending balance: acquired credit impaired loans evaluated for impairment	116
Total ending balance	11,178	9,839	7,624	7,505
Loans and leases held for investment:
Ending balance: individually evaluated for impairment	30,573		21,658
Ending balance: collectively evaluated for impairment	1,441,709		1,160,406
Loans measured at fair value	1,895		2,092
Acquired non-credit impaired loans	295,420		395,838
Acquired credit impaired loans	356		5,261
Total Loans and Leases Held for Investment	1,769,953		1,585,255
Real Estate-Residential Secured for Business Purpose [Member]
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment	14		364
Ending balance: collectively evaluated for impairment	1,815		981
Ending balance: acquired credit impaired loans evaluated for impairment	42
Total ending balance	1,871	1,661	1,345	774
Loans and leases held for investment:
Ending balance: individually evaluated for impairment	2,173		5,178
Ending balance: collectively evaluated for impairment	249,015		175,652
Loans measured at fair value	0		0
Acquired non-credit impaired loans	81,587		110,820
Acquired credit impaired loans	586		582
Total Loans and Leases Held for Investment	333,361	341,967	292,232
Real Estate-Residential and Home Equity Secured for Personal Purpose [Member]
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment	0		1
Ending balance: collectively evaluated for impairment	1,908		1,000
Ending balance: acquired credit impaired loans evaluated for impairment	0
Total ending balance	1,908	1,754	1,001	993
Loans and leases held for investment:
Ending balance: individually evaluated for impairment	1,284		1,054
Ending balance: collectively evaluated for impairment	449,827		373,852
Loans measured at fair value	0		0
Acquired non-credit impaired loans	69,325		87,412
Acquired credit impaired loans	205		213
Total Loans and Leases Held for Investment	520,641		462,531
Loans to Individuals [Member]
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	372		335
Ending balance: acquired credit impaired loans evaluated for impairment	0
Total ending balance	372	373	335	364
Loans and leases held for investment:
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	28,112		27,915
Loans measured at fair value	0		0
Acquired non-credit impaired loans	143		148
Acquired credit impaired loans	0		0
Total Loans and Leases Held for Investment	28,255	28,300	28,063
Lease Financings [Member]
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment	0		580
Ending balance: collectively evaluated for impairment	1,079		749
Ending balance: acquired credit impaired loans evaluated for impairment	0
Total ending balance	1,079	1,132	1,329	788
Loans and leases held for investment:
Ending balance: individually evaluated for impairment	1,250		5,021
Ending balance: collectively evaluated for impairment	128,490		127,843
Loans measured at fair value	0		0
Acquired non-credit impaired loans	0		0
Acquired credit impaired loans	0		0
Total Loans and Leases Held for Investment	129,740	129,768	132,864
Unallocated Financing Receivables [Member]
Reserve for loan and lease losses:
Ending balance: collectively evaluated for impairment	60		4
Ending balance: acquired credit impaired loans evaluated for impairment	0
Total ending balance	$ 60	$ 54	$ 4	$ 38

Loans and Leases - Impaired Loa

Loans and Leases - Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	$ 25,402	$ 27,454
Impaired loans with a reserve recorded, Recorded Investment	15,188	1,028
Impaired loans with no related reserve, Unpaid Principal Balance	27,266	30,882
Impaired loans with a reserve recorded, Unpaid Principal Balance	15,814	1,030
Total impaired loans, Recorded Investment	40,590	28,482
Total impaired loans, Unpaid Principal Balance	43,080	31,912
Impaired Financing Receivable, Related Reserve	732	131
Lease Financings [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	1,300	1,300
Impaired Financing Receivable, Related Reserve	0	0
Commercial, Financial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	4,683	7,019
Impaired loans with a reserve recorded, Recorded Investment	1,877	60
Impaired loans with no related reserve, Unpaid Principal Balance	5,518	8,301
Impaired loans with a reserve recorded, Unpaid Principal Balance	2,336	60
Total impaired loans, Recorded Investment	6,560	7,079
Total impaired loans, Unpaid Principal Balance	7,854	8,361
Impaired Financing Receivable, Related Reserve	34	31
Real Estate-Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	17,738	15,621
Impaired loans with a reserve recorded, Recorded Investment	12,835	933
Impaired loans with no related reserve, Unpaid Principal Balance	18,564	16,507
Impaired loans with a reserve recorded, Unpaid Principal Balance	12,929	933
Total impaired loans, Recorded Investment	30,573	16,554
Total impaired loans, Unpaid Principal Balance	31,493	17,440
Impaired Financing Receivable, Related Reserve	684	99
Real Estate-Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	0	365
Impaired loans with no related reserve, Unpaid Principal Balance	0	365
Total impaired loans, Recorded Investment	0	365
Total impaired loans, Unpaid Principal Balance	0	365
Impaired Financing Receivable, Related Reserve	0	0
Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	1,697	3,430
Impaired loans with a reserve recorded, Recorded Investment	476	35
Impaired loans with no related reserve, Unpaid Principal Balance	1,819	4,620
Impaired loans with a reserve recorded, Unpaid Principal Balance	549	37
Total impaired loans, Recorded Investment	2,173	3,465
Total impaired loans, Unpaid Principal Balance	2,368	4,657
Impaired Financing Receivable, Related Reserve	14	1
Real Estate Residential Secured For Personal Purpose [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	635	508
Impaired loans with no related reserve, Unpaid Principal Balance	691	566
Total impaired loans, Recorded Investment	635	508
Total impaired loans, Unpaid Principal Balance	691	566
Impaired Financing Receivable, Related Reserve	0	0
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related reserve, Recorded Investment	649	511
Impaired loans with no related reserve, Unpaid Principal Balance	674	523
Total impaired loans, Recorded Investment	649	511
Total impaired loans, Unpaid Principal Balance	674	523
Impaired Financing Receivable, Related Reserve	$ 0	$ 0

Loans and Leases - Average Reco

Loans and Leases - Average Recorded Investment in Impaired Loans and Leases and Analysis of Interest on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 31,112	$ 40,712
Interest Income Recognized	218	292
Additional Interest Income That Would Have Been Recognized Under Original Terms	409	215
Interest income, cash basis for nonaccrual loans	6	1
Interest income, accrual method	212	291
Commercial, Financial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	7,703	11,418
Interest Income Recognized	40	43
Additional Interest Income That Would Have Been Recognized Under Original Terms	77	85
Real Estate-Commercial [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	19,916	23,949
Interest Income Recognized	172	233
Additional Interest Income That Would Have Been Recognized Under Original Terms	287	73
Real Estate-Construction [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	183	0
Interest Income Recognized	0	0
Additional Interest Income That Would Have Been Recognized Under Original Terms	2	0
Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	2,217	4,268
Interest Income Recognized	5	16
Additional Interest Income That Would Have Been Recognized Under Original Terms	24	44
Real Estate Residential Secured For Personal Purpose [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	544	552
Interest Income Recognized	1	0
Additional Interest Income That Would Have Been Recognized Under Original Terms	11	8
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	549	525
Interest Income Recognized	0	0
Additional Interest Income That Would Have Been Recognized Under Original Terms	$ 8	$ 5

Loans and Leases - Troubled Deb

Loans and Leases - Troubled Debt Restructured Loans (Details) - loan	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0

Loans and Leases - Accruing and

Loans and Leases - Accruing and Nonaccruing Troubled Debt Restructured Loans with Payment Defaults (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)loan	Mar. 31, 2017USD ($)loan
Accrual Troubled Debt Restructuring Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans | loan	0	0
Recorded Investment | $	$ 0	$ 0
Nonaccrual Troubled Debt Restructuring Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans | loan	1	0
Recorded Investment | $	$ 953	$ 0
Nonaccrual Troubled Debt Restructuring Loans [Member] | Commercial, Financial and Agricultural [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of Loans | loan	1	0
Recorded Investment | $	$ 953	$ 0

Loans and Leases - Mortgages in

Loans and Leases - Mortgages in Process of Foreclosure (Details) - Residential Real Estate [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	$ 396	$ 31
Real Estate Residential Secured For Personal Purpose [Member]
Financing Receivable, Modifications [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	317	31
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Modifications [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	$ 79	$ 0

Loans and Leases - Foreclosed R

Loans and Leases - Foreclosed Residential Real Estate (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Foreclosed residential real estate	$ 80	$ 80

Goodwill and Other Intangible60

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Mortgage Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Aggregate fair value of servicing rights	$ 11,200	$ 10,000
Range of discount rates used for valuation of mortgage servicing rights	10.00%	10.00%
SBA Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Aggregate fair value of servicing rights	$ 20	$ 21

Goodwill and Other Intangible61

Goodwill and Other Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 172,559
Goodwill, Acquired During Period	0
Goodwill, Ending Balance	172,559
Banking [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	138,476
Goodwill, Acquired During Period	0
Goodwill, Ending Balance	138,476
Wealth Management [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	15,434
Goodwill, Acquired During Period	0
Goodwill, Ending Balance	15,434
Insurance [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	18,649
Goodwill, Acquired During Period	0
Goodwill, Ending Balance	$ 18,649

Goodwill and Other Intangible62

Goodwill and Other Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 36,071	$ 35,734
Accumulated Amortization and Fair Value Adjustments	22,725	21,825
Net Carrying Amount	13,346	13,909
Covenants Not To Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	710	710
Accumulated Amortization and Fair Value Adjustments	645	580
Net Carrying Amount	65	130
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,788	6,788
Accumulated Amortization and Fair Value Adjustments	2,399	2,135
Net Carrying Amount	4,389	4,653
Customer Related Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,381	12,381
Accumulated Amortization and Fair Value Adjustments	10,094	9,828
Net Carrying Amount	2,287	2,553
Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,192	15,855
Accumulated Amortization and Fair Value Adjustments	9,587	9,282
Net Carrying Amount	$ 6,605	$ 6,573

Goodwill and Other Intangible63

Goodwill and Other Intangible Assets - Estimated Amortization Expense for Covenants Not To Compete and Core Deposit and Customer Related Intangibles (Details) $ in Thousands	Mar. 31, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2018	$ 1,519
2,019	1,565
2,020	1,200
2,021	923
2,022	666
Thereafter	$ 868

Goodwill and Other Intangible64

Goodwill and Other Intangible Assets - Changes in Servicing Rights (Details) - Servicing Rights [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning of period	$ 6,573	$ 6,485
Servicing rights capitalized	337	343
Amortization of servicing rights	(305)	(326)
Changes in valuation allowance	0	0
End of period	6,605	6,502
Residential mortgage and SBA loans serviced for others	$ 1,012,677	$ 972,617

Goodwill and Other Intangible65

Goodwill and Other Intangible Assets - Estimated Amortization Expense of Servicing Rights (Details) $ in Thousands	Mar. 31, 2018USD ($)
Finite-Lived Intangible Assets [Line Items]
Remainder of 2018	$ 1,519
2,019	1,565
2,020	1,200
2,021	923
2,022	666
Thereafter	868
Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Remainder of 2018	874
2,019	774
2,020	684
2,021	602
2,022	529
Thereafter	$ 3,142

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Aggregate amount of time deposits in denominations of $100 thousand or more	$ 181	$ 250
Aggregate amount of time deposits in denominations over $250 thousand	$ 53.2	$ 118.4

Deposits - Schedule of Componen

Deposits - Schedule of Components of Weighted Average Interest Rate and Balance of Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Weighted Average Rate Domestic Deposit Liabilities [Abstract]
Noninterest-bearing deposits	0.00%	0.00%
Demand deposits	0.51%	0.43%
Savings deposits	0.30%	0.26%
Time Deposits	1.18%	1.12%
Deposits	0.41%	0.38%
Deposits
Noninterest-bearing deposits	$ 1,002,021	$ 1,040,026
Demand deposits	1,159,737	1,109,438
Savings deposits	815,032	830,706
Time deposits	520,503	574,749
Total deposits	$ 3,497,293	$ 3,554,919

Deposits - Schedule of Maturiti

Deposits - Schedule of Maturities of Time Deposits (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Remainder of 2018	$ 207,697
2,019	183,979
2,020	65,427
2,021	19,000
2,022	32,457
Thereafter	11,943
Time deposits	$ 520,503	$ 574,749

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,500,000,000
Outstanding short term letters of credit	198,000,000	$ 234,200,000
Amount of maintained federal fund lines of credit with correspondent banks	367,000,000	367,000,000
Investment securities collateral for Federal Reserve Bank Discount Window Lending program	68,500,000	52,000,000
Outstanding amount of federal fund line of credit with Federal Reserve Bank of Philadelphia	0	$ 0
Amount of maintained line of credit with correspondent bank - parent company	10,000,000
Outstanding amount of line of credit with correspondent bank - parent company	0
Securities Sold under Agreements to Repurchase [Member]
Debt Instrument [Line Items]
Long-term debt with fixed interest rate	5,100,000
Securities Sold under Agreements to Repurchase [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Long-term debt with variable interest rate	$ 25,600,000

Borrowings - Summary of Borrowi

Borrowings - Summary of Borrowings By Type (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 216,426	$ 105,431
Balance at End of Period	155,692	155,828
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 125,021	$ 125,036
Weighted Average Interest Rate	1.73%	1.73%
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 30,671	$ 30,792
Weighted Average Interest Rate	1.77%	1.52%
Subordinated Debt [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 94,392	$ 94,331
Weighted Average Interest Rate	5.34%	5.35%
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 148,285	$ 30,225
Weighted Average Interest Rate	1.87%	1.54%
Federal Funds Purchased [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 50,000	$ 55,000
Weighted Average Interest Rate	1.80%	1.56%
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Balance at End of Period	$ 18,141	$ 20,206
Weighted Average Interest Rate	0.05%	0.05%

Borrowings - Schedule of Maturi

Borrowings - Schedule of Maturities of Long-term FHLB Advances (Details) $ in Thousands	Mar. 31, 2018USD ($)
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]
Remainder of 2018	$ 10,021
2,019	10,000
2,020	40,000
2,021	55,000
2,022	10,000
Thereafter	0
Total Advances	$ 125,021
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]
Remainder of 2018 Weighted average interest rate	0.70%
2019 Weighted average interest rate	1.35%
2020 Weighted average interest rate	1.70%
2021 Weighted average interest rate	1.94%
2022 Weighted average interest rate	2.09%
Thereafter Weighted average interest rate	0.00%
Weighted average interest rate	1.73%

Borrowings - Schedule of Matu72

Borrowings - Schedule of Maturities of Other Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Long-term Debt, Fiscal Year Maturity [Abstract]
Balance at End of Period	$ 155,692	$ 155,828
Securities Sold under Agreements to Repurchase [Member]
Long-term Debt, Fiscal Year Maturity [Abstract]
Remainder of 2018	10,138
2,019	10,228
2,020	10,305
2,021	0
2,022	0
Thereafter	0
Balance at End of Period	$ 30,671	$ 30,792
Long-term Debt, Other Disclosures [Abstract]
Remainder of 2018 Weighted average interest rate	1.29%
2019 Weighted average interest rate	2.01%
2020 Weighted average interest rate	2.01%
2021 Weighted average interest rate	0.00%
2022 Weighted average interest rate	0.00%
Thereafter Weighted average interest rate	0.00%
Weighted average interest rate	1.77%	1.52%

Retirement Plans and Other Po73

Retirement Plans and Other Postretirement Benefits - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Employee hire date no longer eligible for noncontributory retirement plan	Dec. 8, 2009
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions for next fiscal year		$ 80
Defined benefit plan, contributions by employer	$ 27
Defined benefit plan, benefits paid	27
Nonqualified Plan [Member] | Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions for next fiscal year		$ 158
Defined benefit plan, contributions by employer	40
Defined benefit plan, benefits paid	$ 600

Retirement Plans and Other Po74

Retirement Plans and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 140	$ 151
Interest cost	441	465
Expected return on plan assets	(796)	(753)
Amortization of net actuarial loss	280	288
Accretion of prior service cost	(71)	(70)
Net periodic benefit (income) cost	(6)	81
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	22	12
Interest cost	23	29
Expected return on plan assets	0	0
Amortization of net actuarial loss	1	11
Accretion of prior service cost	0	0
Net periodic benefit (income) cost	$ 46	$ 52

Stock-Based Incentive Plan - A

Stock-Based Incentive Plan - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share awards authorized for issuance				3,698,974
Fox Chase Bank [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized		857,191
Valley Green Bank [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized			473,483
Common Stock Issuance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	330,625

Stock-Based Incentive Plan - S

Stock-Based Incentive Plan - Status of Options Granted Under Long-Term Incentive Plan (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)$ / sharesshares
Shares Under Option
Shares Under Option, Outstanding, Beginning balance | shares	512,735
Shares Under Option, Granted | shares	193,778
Shares Under Option, Expired | shares	0
Shares Under Option, Forfeited | shares	0
Shares Under Option, Exercised | shares	(14,158)
Share Under Option, Outstanding, Ending balance | shares	692,355
Shares Under Options, Exercisable at March 31, 2018 | shares	302,459
Weighted Average Exercise Price Per Share [Abstract]
Weighted Average Exercise Price Per Share, Outstanding, Beginning balance | $ / shares	$ 21.90
Weighted Average Exercise Price Per Share, Granted | $ / shares	28.50
Weighted Average Exercise Price Per Share, Expired | $ / shares	0
Weighted Average Exercise Price Per Share, Forfeited | $ / shares	0
Weighted Average Exercise Price Per Share, Exercised | $ / shares	18.93
Weighted Average Exercise Price Per Share, Outstanding, Ending balance | $ / shares	23.81
Weighted Average Exercise Price Per Share, Exercisable at March 31, 2018 | $ / shares	$ 20.19
Weighted Average Remaining Contractual Life, Outstanding at March 31, 2018	8 years
Weighted Average Remaining Contractual Life, Exercisable at March 31, 2018	6 years 6 months
Aggregate Intrinsic Value, Outstanding at March 31, 2018 | $	$ 2,930
Aggregate Intrinsic Value, Exercisable at March 31, 2018 | $	$ 2,297

Stock-Based Incentive Plan -77

Stock-Based Incentive Plan - Summary of Nonvested Stock Options (Details) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested Stock Options, Beginning balance	352,142
Nonvested Stock Options, Granted	193,778
Nonvested Stock Options, Vested	(156,024)
Nonvested Stock Options, Forfeited	0
Nonvested Stock Options, Ending balance	389,896
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Beginning balance	$ 6.47
Weighted Average Grant Date Fair Value, Granted	6.46	$ 6.72
Weighted Average Grant Date Fair Value, Vested	6.45
Weighted Average Grant Date Fair Value, Forfeited	0
Weighted Average Grant Date Fair Value, Ending balance	$ 6.48

Stock-Based Incentive Plan -78

Stock-Based Incentive Plan - Aggregated Assumptions Used to Estimate Fair Value of Options Granted (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected option life in years	6 years 7 months 6 days	6 years 10 months 24 days
Risk free interest rate	2.80%	2.30%
Expected dividend yield	2.81%	2.84%
Expected volatility	27.15%	29.75%
Fair value of options	$ 6.46	$ 6.72

Stock-Based Incentive Plan -79

Stock-Based Incentive Plan - Summary of Nonvested Restricted Stock Awards (Detail)	3 Months Ended
	Mar. 31, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested Share Awards, Beginning balance | shares	229,026
Nonvested Share Awards, Granted | shares	59,953
Nonvested Share Awards, Vested | shares	(43,200)
Nonvested Share Awards, Forfeited | shares	(13,750)
Nonvested Share awards, Ending balance | shares	232,029
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Beginning balance | $ / shares	$ 21.93
Weighted Average Grant Date Fair Value, Granted | $ / shares	28.39
Weighted Average Grant Date Fair Value, Vested | $ / shares	18.59
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	18.52
Weighted Average Grant Date Fair Value, Ending balance | $ / shares	$ 24.43

Stock-Based Incentive Plan - C

Stock-Based Incentive Plan - Certain Information Regarding Restricted Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	59,953
Weighted average grant date fair value	$ 28.39
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	59,953	58,448
Weighted average grant date fair value	$ 28.39	$ 28.15
Intrinsic value of awards vested	$ 1,193	$ 1,333

Stock-Based Incentive Plan -81

Stock-Based Incentive Plan - Schedule of Unrecognized Compensation Cost, Nonvested Awards (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 5,667
Weighted-Average Period Remaining (Years)	2 years 1 month 6 days
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 2,293
Weighted-Average Period Remaining (Years)	2 years 3 months 18 days
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Compensation Cost	$ 3,374
Weighted-Average Period Remaining (Years)	2 years

Stock-Based Incentive Plan -82

Stock-Based Incentive Plan - Compensation Expense Related to Stock Incentive Plans Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Stock-based compensation expense:
Total Expense	$ 862	$ 846
Tax benefit on nonqualified stock option expense, restricted stock awards and disqualifying dispositions of incentive stock options	243	507
Stock Options [Member]
Stock-based compensation expense:
Total Expense	228	221
Restricted Stock Awards [Member]
Stock-based compensation expense:
Total Expense	619	610
Employee Stock Purchase Plan [Member]
Stock-based compensation expense:
Total Expense	$ 15	$ 15

Accumulated Other Comprehensi83

Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance		$ (17,771)	$ (19,454)
Net Change		(4,666)	462
Ending balance		(26,791)	(18,992)
Accounting Standards Update 2016-01 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption				$ 0
Accounting Standards Update 2018-02 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption				0
Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance		(4,061)	(4,988)
Net Change		(5,015)	263
Ending balance		(10,477)	(4,725)
Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member] | Accounting Standards Update 2016-01 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1]			(433)
Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member] | Accounting Standards Update 2018-02 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1]			(968)
Net Change Related to Derivative Used for Cash Flow Hedge [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance		9	(141)
Net Change		183	51
Ending balance		194	(90)
Net Change Related to Derivative Used for Cash Flow Hedge [Member] | Accounting Standards Update 2016-01 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1]			0
Net Change Related to Derivative Used for Cash Flow Hedge [Member] | Accounting Standards Update 2018-02 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1]			2
Net Change Related to Defined Benefit Pension Plan [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Beginning balance		(13,719)	(14,325)
Net Change		166	148
Ending balance		(16,508)	(14,177)
Net Change Related to Defined Benefit Pension Plan [Member] | Accounting Standards Update 2016-01 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1]			0
Net Change Related to Defined Benefit Pension Plan [Member] | Accounting Standards Update 2018-02 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1]			(2,955)
Accumulated Other Comprehensive (Loss) Income [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Net Change		$ (4,666)	$ 462
Accumulated Other Comprehensive (Loss) Income [Member] | Accounting Standards Update 2016-01 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1],[2]			(433)
Accumulated Other Comprehensive (Loss) Income [Member] | Accounting Standards Update 2018-02 [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Cumulative Effect of New Accounting Pronouncement in Period of Adoption	[1],[2]			$ (3,921)
[1]	(1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2018" for additional information.
[2]	(1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2018" for additional information.

Derivative Instruments and He84

Derivative Instruments and Hedging Activities - Narrative (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2018USD ($)instrument	Dec. 31, 2014USD ($)	Dec. 31, 2017USD ($)
Derivative [Line Items]
Loans receivable with fixed rates of interest maturity period		10 years
Loans receivable with fixed rates		$ 29,100,000
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	$ 19,025,000		$ 19,224,000
Derivative Liabilities	0		12,000
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	128,399,000		132,593,000
Derivative Liabilities	$ 61,000		74,000
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Loans receivable with fixed rates of interest maturity period	15 years
Derivative fixed interest rate	7.43%
Notional Amount	$ 497,000		523,000
Loans receivable fixed interest rate (percentage)	7.43%
Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	$ 75,044,000		75,622,000
Derivative number of instruments held | instrument	15
Underlying derivative at fair value	$ 31,000
Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative asset notional amount		$ 20,000,000
Derivative fixed interest rate		2.10%
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months	0
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional Amount	17,648,000		17,836,000
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivative [Line Items]
Derivative Liabilities	$ 294,000
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Loans receivable with fixed rates of interest maturity period	10 years
Derivative fixed interest rate	5.83%
Notional Amount	$ 1,377,000		$ 1,388,000
Loans receivable fixed interest rate (percentage)	5.83%
Minimum [Member] | Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative remaining maturity	1 year
Maximum [Member] | Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative remaining maturity	10 years
One-Month LIBOR [Member] | Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative basis spread on variable rate	2.24%
One-Month LIBOR [Member] | Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative basis spread on variable rate	3.50%

Derivative Instruments and He85

Derivative Instruments and Hedging Activities - Derivatives Designated as Hedging Instruments (Detail) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$ 19,025			$ 19,224
Derivative Assets	300			13
Derivative Liabilities	0			12
Net loss	(20)	$ (68)
Gain (loss) recognized in other comprehensive income (loss)	193		$ 9
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	17,648			17,836
Gain (loss) recognized in other comprehensive income (loss)	193		$ 9
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net loss	20	71
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Other Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	294			13
Derivative Liabilities	294
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	0			0
Interest Rate Swap [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	1,377			1,388
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Other Noninterest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net loss	0	$ 3
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Other Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	6			0
Interest Rate Swap [Member] | Fair Value Hedging [Member] | Other Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	$ 0			$ 12

Derivative Instruments and He86

Derivative Instruments and Hedging Activities - Derivatives Not Designated as Hedging Instruments (Detail) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional Amount	$ 128,399		$ 132,593
Derivative Assets	407		588
Derivative Liabilities	61		74
Derivative instruments not designated as hedging instruments gain (loss), net	(177)	$ 224
Interest Rate Swap [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional Amount	497		523
Interest Rate Swap [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Assets	0		0
Interest Rate Swap [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Liabilities	30		38
Credit Risk Contract [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional Amount	75,044		75,622
Credit Risk Contract [Member] | Other Noninterest Income [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative instruments not designated as hedging instruments gain (loss), net	4	71
Credit Risk Contract [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Assets	0		0
Credit Risk Contract [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Liabilities	31		36
Interest Rate Locks with Customers [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional Amount	26,090		27,411
Interest Rate Locks with Customers [Member] | Mortgage Banking Activities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative instruments not designated as hedging instruments gain (loss), net	(132)	407
Interest Rate Locks with Customers [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Assets	395		527
Interest Rate Locks with Customers [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Liabilities	0		0
Forward Loan Sale Commitments [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional Amount	26,768		29,037
Forward Loan Sale Commitments [Member] | Mortgage Banking Activities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative instruments not designated as hedging instruments gain (loss), net	(49)	$ (254)
Forward Loan Sale Commitments [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Assets	12		61
Forward Loan Sale Commitments [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative Liabilities	$ 0		$ 0

Fair Value Disclosures - Narrat

Fair Value Disclosures - Narrative (Details)	3 Months Ended
	Mar. 31, 2018USD ($)loan	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration	$ 17,000	$ 14,000
Valuation adjustments for loans held for sale	0	0
Carrying value of impaired loans and leases held for investment	40,590,000		$ 28,482,000
Valuation allowance of impaired loans held for investment	732,000		131,000
Servicing rights carrying amount before valuation allowance	6,600,000		6,573,000
Servicing rights valuation allowance	0		0
Impaired loans with no related reserve, Recorded Investment	25,402,000		27,454,000
Other real estate owned	1,843,000		1,843,000
Sterner Insurance Associates Inc [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration		0
Girard Partners [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Adjustment of Contingent Consideration	17,000	$ 14,000
Held for Investment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans and leases held for investment	40,600,000
Valuation allowance of impaired loans held for investment	732,000		131,000
Lease Financings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Valuation allowance of impaired loans held for investment	0		0
Impaired loans with no related reserve, Recorded Investment	$ 1,300,000		$ 1,300,000
Interest Rate Swap [Member] | Derivative Financial Instruments, Liabilities [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of loans with unrealized gain | loan	2
Unrealized gain on loans	$ 27,000

Fair Value Disclosures - Assets

Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Assets:
Total available-for-sale securities	$ 376,787	$ 398,518
Investments in equity securities	1,072	1,076
Total assets	1,895		$ 2,092
Fair Value Measured on Recurring Basis [Member]
Assets:
Total available-for-sale securities	376,787	398,518
Investments in equity securities	1,072
Loans	1,895	1,958
Total assets	380,461	401,077
Liabilities:
Total liabilities	383	425
Fair Value Measured on Recurring Basis [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	322	339
Fair Value Measured on Recurring Basis [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	30	50
Fair Value Measured on Recurring Basis [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	31	36
Fair Value Measured on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0
Fair Value Measured on Recurring Basis [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities	16,882	16,961
Fair Value Measured on Recurring Basis [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	72,808	78,297
Fair Value Measured on Recurring Basis [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	174,585	185,421
Fair Value Measured on Recurring Basis [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	3,368	3,602
Fair Value Measured on Recurring Basis [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	97,970	107,176
Fair Value Measured on Recurring Basis [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	11,174	5,985
Fair Value Measured on Recurring Basis [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities		1,076
Fair Value Measured on Recurring Basis [Member] | Interest Rate Swap [Member]
Assets:
Derivative assets	300
Liabilities:
Derivative liabilities		13
Fair Value Measured on Recurring Basis [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	395	527
Fair Value Measured on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets	12	61
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member]
Assets:
Total available-for-sale securities	11,174	7,061
Investments in equity securities	1,072
Loans	0	0
Total assets	12,246	7,061
Liabilities:
Total liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	11,174	5,985
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities		1,076
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Swap [Member]
Assets:
Derivative assets	0
Liabilities:
Derivative liabilities		0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member]
Assets:
Total available-for-sale securities	338,691	363,471
Investments in equity securities	0
Loans	0	0
Total assets	339,398	364,072
Liabilities:
Total liabilities	30	50
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	30	50
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities	16,882	16,961
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	72,808	78,297
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	174,585	185,421
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	3,368	3,602
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	71,048	79,190
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities		0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Swap [Member]
Assets:
Derivative assets	300
Liabilities:
Derivative liabilities		13
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	395	527
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets	12	61
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member]
Assets:
Total available-for-sale securities	26,922	27,986
Investments in equity securities	0
Loans	1,895	1,958
Total assets	28,817	29,944
Liabilities:
Total liabilities	353	375
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	322	339
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	31	36
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	26,922	27,986
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities		0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Swap [Member]
Assets:
Derivative assets	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets	$ 0	$ 0

Fair Value Disclosures - Level

Fair Value Disclosures - Level 3 Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Net Asset (Liability) Value [Roll Forward]
Beginning balance	$ 29,908	$ 30,907
Purchases/additions	0	(120)
Sales	0	0
Payments received	(37)	(33)
Premium amortization, net	0	0
(Decrease) increase in value	(1,085)	(525)
Ending balance	28,786	30,229
Derivative Financial Instruments, Liabilities [Member] | Credit Risk Contract [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(36)	(9)
Purchases/additions	0	(120)
Sales	0	0
Payments received	0	0
Premium amortization, net	0	0
(Decrease) increase in value	5	72
Ending balance	(31)	(57)
Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	27,986	28,778
Purchases/additions	0	0
Sales	0	0
Payments received		0
Premium amortization, net	0	0
(Decrease) increase in value	(1,064)	(584)
Ending balance	26,922	28,194
Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,958	2,138
Purchases/additions	0	0
Sales	0	0
Payments received	(37)	(33)
Premium amortization, net	0	0
(Decrease) increase in value	(26)	(13)
Ending balance	$ 1,895	$ 2,092

Fair Value Disclosures - Change

Fair Value Disclosures - Change in Contingent Consideration Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	$ 339	$ 5,999
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	34	5,284
Adjustment of Contingent Consideration	17	14
Ending Balance	322	729
Sterner Insurance Associates Inc [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance		331
Contingent Consideration from New Acquisition		0
Payment of Contingent Consideration		0
Adjustment of Contingent Consideration		0
Ending Balance		331
Girard Partners [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning Balance	339	5,668
Contingent Consideration from New Acquisition	0	0
Payment of Contingent Consideration	34	5,284
Adjustment of Contingent Consideration	17	14
Ending Balance	$ 322	$ 398

Fair Value Disclosures - Asse91

Fair Value Disclosures - Assets Measured at Fair Value on Non-recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 1,843	$ 1,843
Total assets	1,895		$ 2,092
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	39,858	28,351
Impaired leases held for investment	1,250	1,250
Other real estate owned	1,843	1,843
Total assets	42,951	31,444
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	0	0
Impaired leases held for investment	0	0
Other real estate owned	0	0
Total assets	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	0	0
Impaired leases held for investment	0	0
Other real estate owned	0	0
Total assets	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	39,858	28,351
Impaired leases held for investment	1,250	1,250
Other real estate owned	1,843	1,843
Total assets	$ 42,951	$ 31,444

Fair Value Disclosures - Asse92

Fair Value Disclosures - Assets, Liabilities and Off-balance Sheet Items Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Assets:
Held-to-maturity securities	$ 82,975	$ 55,320
Other real estate owned	1,843	1,843
Total assets	1,895		$ 2,092
Deposits:
Time deposits	520,503	574,749
Subordinated notes	94,392	94,331
Fair Value [Member]
Assets:
Cash and short-term interest-earning assets	48,631	75,409
Held-to-maturity securities	82,975	55,320
Loans held for sale	705	1,676
Net loans and leases held for investment	3,611,759	3,547,451
Servicing rights	11,257	10,046
Other real estate owned		0
Total assets	3,755,327	3,689,902
Deposits:
Demand and savings deposits, non-maturity	2,976,790	2,980,170
Time deposits	519,494	574,737
Total deposits	3,496,284	3,554,907
Short-term borrowings	216,426	105,431
Long-term debt	157,109	156,834
Subordinated notes	97,600	98,075
Total liabilities	3,967,419	3,915,247
Off-Balance-Sheet:
Commitments to extend credit	(2,437)	(2,414)
Fair Value [Member] | Level 1 [Member]
Assets:
Cash and short-term interest-earning assets	48,631	75,409
Held-to-maturity securities	0	0
Loans held for sale	0	0
Net loans and leases held for investment	0	0
Servicing rights	0	0
Other real estate owned		0
Total assets	48,631	75,409
Deposits:
Demand and savings deposits, non-maturity	2,976,790	2,980,170
Time deposits	0	0
Total deposits	2,976,790	2,980,170
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Total liabilities	2,976,790	2,980,170
Off-Balance-Sheet:
Commitments to extend credit	0	0
Fair Value [Member] | Level 2 [Member]
Assets:
Cash and short-term interest-earning assets	0	0
Held-to-maturity securities	82,975	55,320
Loans held for sale	705	1,676
Net loans and leases held for investment	0	0
Servicing rights	0	0
Other real estate owned		0
Total assets	83,680	56,996
Deposits:
Demand and savings deposits, non-maturity	0	0
Time deposits	519,494	574,737
Total deposits	519,494	574,737
Short-term borrowings	216,426	105,431
Long-term debt	157,109	156,834
Subordinated notes	97,600	98,075
Total liabilities	990,629	935,077
Off-Balance-Sheet:
Commitments to extend credit	(2,437)	(2,414)
Fair Value [Member] | Level 3 [Member]
Assets:
Cash and short-term interest-earning assets	0	0
Held-to-maturity securities	0	0
Loans held for sale	0	0
Net loans and leases held for investment	3,611,759	3,547,451
Servicing rights	11,257	10,046
Other real estate owned		0
Total assets	3,623,016	3,557,497
Deposits:
Demand and savings deposits, non-maturity	0	0
Time deposits	0	0
Total deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Total liabilities	0	0
Off-Balance-Sheet:
Commitments to extend credit	0	0
Carrying Amount [Member]
Assets:
Cash and short-term interest-earning assets	48,631	75,409
Held-to-maturity securities	84,393	55,564
Federal Home Loan Bank, Federal Reserve Bank and other stock	32,801	27,204
Loans held for sale	687	1,642
Net loans and leases held for investment	3,623,475	3,566,953
Servicing rights	6,605	6,573
Other real estate owned		0
Total assets	3,796,592	3,733,345
Deposits:
Demand and savings deposits, non-maturity	2,976,790	2,980,170
Time deposits	520,503	574,749
Total deposits	3,497,293	3,554,919
Short-term borrowings	216,426	105,431
Long-term debt	155,692	155,828
Subordinated notes	94,392	94,331
Total liabilities	3,963,803	3,910,509
Off-Balance-Sheet:
Commitments to extend credit	0	0
Fair Value Measured on Recurring Basis [Member]
Assets:
Net loans and leases held for investment	1,895	1,958
Total assets	380,461	401,077
Deposits:
Total liabilities	383	425
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member]
Assets:
Net loans and leases held for investment	0	0
Total assets	12,246	7,061
Deposits:
Total liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member]
Assets:
Net loans and leases held for investment	0	0
Total assets	339,398	364,072
Deposits:
Total liabilities	30	50
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member]
Assets:
Net loans and leases held for investment	1,895	1,958
Total assets	28,817	29,944
Deposits:
Total liabilities	$ 353	$ 375

Segment Reporting (Details)

Segment Reporting (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2018USD ($)segment	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Segment Reporting [Abstract]
Reportable business segments | segment		3
Segment Reporting Information [Line Items]
Total assets		$ 4,613,959	$ 4,273,931	$ 4,554,862
Interest income		43,534	38,396
Interest expense		6,262	4,113
Net interest income	[1]	37,272	34,283
Provision for loan and lease losses		2,053	2,445
Noninterest income		15,582	14,970
Intangible expenses		612	759
Restructuring charges		571
Other noninterest expense		33,942	31,271
Intersegment (revenue) expense		0	0
Income before income taxes		15,676	14,778
Income tax expense		2,826	3,922
Net income		12,850	10,856
Capital expenditures		1,081	4,388
Banking [Member]
Segment Reporting Information [Line Items]
Total assets		4,519,423	4,187,607	4,466,301
Interest income		43,522	38,392
Interest expense		5,001	2,852
Net interest income	[1]	38,521	35,540
Provision for loan and lease losses		2,053	2,445
Noninterest income		4,789	5,162
Intangible expenses		329	396
Restructuring charges		571
Other noninterest expense		27,661	25,055
Intersegment (revenue) expense		(291)	(264)
Income before income taxes		12,987	13,070
Income tax expense		1,998	3,527
Net income		10,989	9,543
Capital expenditures		970	4,320
Wealth Management [Member]
Segment Reporting Information [Line Items]
Total assets		36,848	31,178	34,600
Interest income		5	1
Interest expense		0	0
Net interest income	[1]	5	1
Provision for loan and lease losses		0	0
Noninterest income		5,740	5,138
Intangible expenses		142	170
Restructuring charges		0
Other noninterest expense		3,658	3,421
Intersegment (revenue) expense		153	146
Income before income taxes		1,792	1,402
Income tax expense		545	526
Net income		1,247	876
Capital expenditures		49	11
Insurance [Member]
Segment Reporting Information [Line Items]
Total assets		28,651	24,412	27,846
Interest income		0	0
Interest expense		0	0
Net interest income	[1]	0	0
Provision for loan and lease losses		0	0
Noninterest income		5,086	4,547
Intangible expenses		141	193
Restructuring charges		0
Other noninterest expense		3,245	3,069
Intersegment (revenue) expense		138	118
Income before income taxes		1,562	1,167
Income tax expense		456	492
Net income		1,106	675
Capital expenditures		7	7
Other Segments [Member]
Segment Reporting Information [Line Items]
Total assets		29,037	30,734	$ 26,115
Interest income		7	3
Interest expense		1,261	1,261
Net interest income	[1]	(1,254)	(1,258)
Provision for loan and lease losses		0	0
Noninterest income		(33)	123
Intangible expenses		0	0
Restructuring charges		0
Other noninterest expense		(622)	(274)
Intersegment (revenue) expense		0	0
Income before income taxes		(665)	(861)
Income tax expense		(173)	(623)
Net income		(492)	(238)
Capital expenditures		$ 55	$ 50
[1]	(1)Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of the standard. Noninterest income streams that are out-of-scope of the standard include bank owned life insurance income, sales of investment securities and mortgage banking activities.

Revenue From Contracts with C94

Revenue From Contracts with Customers Revenue From Contracts with Customers (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Segment Reporting, Revenue Reconciling Item [Line Items]
Interest Income (Expense), Net	[1]	$ 37,272	$ 34,283
Trust fee income		1,996	1,907
Service charges on deposit accounts		1,327	1,243
Investment advisory commission and fee income		3,683	3,181
Insurance commission and fee income		4,888	4,410
Other service fee income	[2]	2,169	1,987
Bank owned life insurance income	[1]	669	783
Net gain on sales of investment securities	[1]	10	15
Net gain on mortgage banking activities	[1]	716	1,113
Other income	[2]	124	331
Noninterest income		15,582	14,970
Banking [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Interest Income (Expense), Net	[1]	38,521	35,540
Trust fee income		0	0
Service charges on deposit accounts		1,327	1,243
Investment advisory commission and fee income		0	0
Insurance commission and fee income		0	0
Other service fee income	[2]	1,909	1,801
Bank owned life insurance income	[1]	698	662
Net gain on sales of investment securities	[1]	10	13
Net gain on mortgage banking activities	[1]	716	1,113
Other income	[2]	129	330
Noninterest income		4,789	5,162
Wealth Management [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Interest Income (Expense), Net	[1]	5	1
Trust fee income		1,996	1,907
Service charges on deposit accounts		0	0
Investment advisory commission and fee income		3,683	3,181
Insurance commission and fee income		0	0
Other service fee income	[2]	60	50
Bank owned life insurance income	[1]	0	0
Net gain on sales of investment securities	[1]	0	0
Net gain on mortgage banking activities	[1]	0	0
Other income	[2]	1	0
Noninterest income		5,740	5,138
Insurance [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Interest Income (Expense), Net	[1]	0	0
Trust fee income		0	0
Service charges on deposit accounts		0	0
Investment advisory commission and fee income		0	0
Insurance commission and fee income		4,888	4,410
Other service fee income	[2]	200	136
Bank owned life insurance income	[1]	0	0
Net gain on sales of investment securities	[1]	0	0
Net gain on mortgage banking activities	[1]	0	0
Other income	[2]	(2)	1
Noninterest income		5,086	4,547
Other Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Interest Income (Expense), Net	[1]	(1,254)	(1,258)
Trust fee income		0	0
Service charges on deposit accounts		0	0
Investment advisory commission and fee income		0	0
Insurance commission and fee income		0	0
Other service fee income	[2]	0	0
Bank owned life insurance income	[1]	(29)	121
Net gain on sales of investment securities	[1]	0	2
Net gain on mortgage banking activities	[1]	0	0
Other income	[2]	(4)	0
Noninterest income		$ (33)	$ 123
[1]	(1)Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of the standard. Noninterest income streams that are out-of-scope of the standard include bank owned life insurance income, sales of investment securities and mortgage banking activities.
[2]	(2)Other service fee income and other income include certain items that are in scope and certain items that are out of scope of the standard and are described further in the following paragraphs.

Restructuring Charges - Narrati

Restructuring Charges - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)center	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 571	$ 0
Restructuring Reserve	$ 516		$ 23
Facility closing [Member] | Owned Financial Center [Member]
Restructuring Cost and Reserve [Line Items]
Number of financial centers closed | center	2
Facility closing [Member] | Leased Financial Center [Member]
Restructuring Cost and Reserve [Line Items]
Number of financial centers closed | center	1
Banking [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 571

Restructuring Charges - Roll-Fo

Restructuring Charges - Roll-Forward of Accrued Restructuring Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Reserve [Roll Forward]
Accrued at January 1, 2018	$ 23
Restructuring charges	571	$ 0
Payments	(78)
Accrued at March 31, 2018	516
Severance expenses [Member]
Restructuring Reserve [Roll Forward]
Accrued at January 1, 2018	0
Restructuring charges	366
Payments	(70)
Accrued at March 31, 2018	296
Write-downs and retirements of fixed assets [Member]
Restructuring Reserve [Roll Forward]
Accrued at January 1, 2018	0
Restructuring charges	48
Payments	0
Accrued at March 31, 2018	48
Lease cancellations [Member]
Restructuring Reserve [Roll Forward]
Accrued at January 1, 2018	23
Restructuring charges	157
Payments	(8)
Accrued at March 31, 2018	$ 172