Univest Financial (UVSP) 10-Q 8 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Trading Symbol	'UVSP	'
Entity Registrant Name	'UNIVEST CORP OF PENNSYLVANIA	'
Entity Central Index Key	'0000102212	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	16,218,515

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$48,887	$32,646
Interest-earning deposits with other banks	8,720	36,523
Investment securities held-to-maturity (fair value $57,499 and $66,853 at June 30, 2014 and December 31, 2013, respectively)	56,604	66,003
Investment securities available-for-sale	301,856	336,281
Loans held for sale	9,811	2,267
Loans and leases held for investment	1,586,994	1,541,484
Less: Reserve for loan and lease losses	-24,094	-24,494
Net loans and leases held for investment	1,562,900	1,516,990
Premises and equipment, net	34,048	34,129
Goodwill	64,326	57,517
Other intangibles, net of accumulated amortization and fair value adjustments of $11,674 and $10,300 at June 30, 2014 and December 31, 2013, respectively	11,494	8,178
Bank owned life insurance	61,458	60,637
Accrued interest receivable and other assets	37,148	40,388
Total assets	2,197,252	2,191,559
LIABILITIES	'	'
Noninterest-bearing deposits	432,399	411,714
Interest-bearing deposits:	'	'
Demand deposits	590,908	625,845
Savings deposits	540,697	536,150
Time deposits	268,230	270,789
Total deposits	1,832,234	1,844,498
Customer repurchase agreements	41,066	37,256
Other short-term borrowings	4,000	'
Accrued interest payable and other liabilities	33,165	29,299
Total liabilities	1,910,465	1,911,053
SHAREHOLDERS' EQUITY	'	'
Common stock, $5 par value: 48,000,000 shares authorized at June 30, 2014 and December 31, 2013; 18,266,404 shares issued at June 30, 2014 and December 31, 2013; 16,248,495 and 16,287,812 shares outstanding at June 30, 2014 and December 31, 2013, respectively	91,332	91,332
Additional paid-in capital	61,839	62,417
Retained earnings	176,911	172,602
Accumulated other comprehensive loss, net of tax benefit	-6,648	-9,955
Treasury stock, at cost; 2,017,909 and 1,978,592 shares at June 30, 2014 and December 31, 2013, respectively	-36,647	-35,890
Total shareholders' equity	286,787	280,506
Total liabilities and shareholders' equity	$2,197,252	$2,191,559

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Fair value of held-to-maturity investment securities	$57,499	$66,853
Accumulated amortization and fair value adjustments on other intangibles	$11,674	$10,300
Common stock, par value	$5	$5
Common stock, shares authorized	48,000,000	48,000,000
Common stock, shares issued	18,266,404	18,266,404
Common stock, shares outstanding	16,248,495	16,287,812
Treasury stock, shares	2,017,909	1,978,592

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest and fees on loans and leases:	'	'	'	'
Taxable	$15,435	$15,809	$30,995	$31,751
Exempt from federal income taxes	1,369	1,130	2,744	2,244
Total interest and fees on loans and leases	16,804	16,939	33,739	33,995
Interest and dividends on investment securities:	'	'	'	'
Taxable	1,011	1,432	2,062	2,804
Exempt from federal income taxes	893	1,044	1,839	2,070
Other interest income	17	46	31	81
Total interest income	18,725	19,461	37,671	38,950
Interest expense	'	'	'	'
Interest on deposits	969	1,155	1,961	2,395
Interest on short-term borrowings	12	15	18	32
Interest on long-term borrowings	'	183	'	472
Total interest expense	981	1,353	1,979	2,899
Net interest income	17,744	18,108	35,692	36,051
Provision for loan and lease losses	1,251	3,446	2,726	5,520
Net interest income after provision for loan and lease losses	16,493	14,662	32,966	30,531
Noninterest income	'	'	'	'
Trust fee income	1,931	1,779	3,830	3,513
Service charges on deposit accounts	1,047	1,098	2,061	2,184
Investment advisory commission and fee income	3,009	2,018	6,058	3,914
Insurance commission and fee income	2,434	2,391	5,766	4,914
Other service fee income	1,897	1,827	3,704	3,525
Bank owned life insurance income	443	413	821	917
Net gain on sales of investment securities	415	1,339	557	1,524
Net gain on mortgage banking activities	519	1,416	868	3,112
Net gain on sales of other real estate owned	'	252	'	252
Loss on termination of interest rate swap	'	-1,866	'	-1,866
Other	229	324	400	477
Total noninterest income	11,924	10,991	24,065	22,466
Noninterest expense	'	'	'	'
Salaries and benefits	10,242	9,359	20,913	19,219
Commissions	1,795	2,388	3,385	4,503
Net occupancy	1,687	1,408	3,441	2,807
Equipment	1,410	1,212	2,744	2,394
Professional fees	846	809	1,655	1,576
Marketing and advertising	581	497	942	862
Deposit insurance premiums	397	400	776	792
Intangible expenses (income)	650	-683	1,410	-474
Acquisition-related costs	516	27	559	27
Restructuring charges	'	'	'	539
Other	3,666	3,869	6,848	7,277
Total noninterest expense	21,790	19,286	42,673	39,522
Income before income taxes	6,627	6,367	14,358	13,475
Income taxes	1,547	1,537	3,552	3,247
Net income	$5,080	$4,830	$10,806	$10,228
Net income per share:	'	'	'	'
Basic	$0.31	$0.29	$0.67	$0.61
Diluted	$0.31	$0.29	$0.66	$0.61
Dividends declared	$0.20	$0.20	$0.40	$0.40

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Income, Before Tax Amount	$6,627	$6,367	$14,358	$13,475
Net unrealized gains (losses) on available-for-sale investment securities, Before Tax Amount	'	'	'	'
Net unrealized holding gains (losses) arising during the period, Before Tax Amount	2,708	-9,201	5,458	-10,605
Less: reclassification adjustment for net gains on sales realized in net income, Before Tax Amount	-415	-1,339	-557	-1,524
Total net unrealized gains (losses) on available-for-sale investment securities, Before Tax Amount	2,293	-10,540	4,901	-12,129
Cash flow hedge derivative, Before Tax Amount	'	'	'	'
Net change in fair value of interest rate swap, Before Tax Amount	'	-119	'	43
Less: reclassification adjustment for loss on termination of interest rate swap realized in net income, Before Tax Amount	'	1,866	'	1,866
Total cash flow hedge derivative, Before Tax Amount	'	1,747	'	1,909
Defined benefit pension plans, Before Tax Amount	'	'	'	'
Less: amortization of net actuarial loss included in net periodic pension costs, Before Tax Amount	167	349	331	641
Less: accretion of prior service cost included in net periodic pension costs, Before Tax Amount	-69	-63	-144	-127
Total defined benefit pension plans, Before Tax Amount	98	286	187	514
Other comprehensive income (loss), Before Tax Amount	2,391	-8,507	5,088	-9,706
Total comprehensive income (loss), Before Tax Amount	9,018	-2,140	19,446	3,769
Income, Tax Expense (Benefit)	1,547	1,537	3,552	3,247
Net unrealized gains (losses) on available-for-sale investment securities, Tax Expense (Benefit)	'	'	'	'
Net unrealized holding gains (losses) arising during the period, Tax Expense (Benefit)	948	-3,221	1,911	-3,712
Less: reclassification adjustment for net gains on sales realized in net income, Tax Expense (Benefit)	-145	-468	-195	-533
Total net unrealized gains (losses) on available-for-sale investment securities, Tax Expense (Benefit)	803	-3,689	1,716	-4,245
Cash flow hedge derivative, Tax Expense (Benefit)	'	'	'	'
Net change in fair value of interest rate swap, Tax Expense (Benefit)	'	-42	'	15
Less: reclassification adjustment for loss on termination of interest rate swap realized in net income, Tax Expense (Benefit)	'	653	'	653
Total cash flow hedge derivative, Tax Expense (Benefit)	'	611	'	668
Defined benefit pension plans, Tax Expense (Benefit)	'	'	'	'
Less: amortization of net actuarial loss included in net periodic pension costs, Tax Expense (Benefit)	59	122	116	224
Less: accretion of prior service cost included in net periodic pension costs, Tax Expense (Benefit)	-25	-21	-51	-44
Total defined benefit pension plans, Tax Expense (Benefit)	34	101	65	180
Other comprehensive income (loss), Tax Expense (Benefit)	837	-2,977	1,781	-3,397
Total comprehensive income (loss), Tax Expense (Benefit)	2,384	-1,440	5,333	-150
Income, Net of Tax Amount	5,080	4,830	10,806	10,228
Net unrealized gains (losses) on available-for-sale investment securities, Net of Tax Amount	'	'	'	'
Net unrealized holding gains (losses) arising during the period, Net of Tax Amount	1,760	-5,980	3,547	-6,893
Less: reclassification adjustment for net gains on sales realized in net income, Net of Tax Amount	-270	-871	-362	-991
Total net unrealized gains (losses) on available-for-sale investment securities, Net of Tax Amount	1,490	-6,851	3,185	-7,884
Cash flow hedge derivative, Net of Tax Amount	'	'	'	'
Net change in fair value of interest rate swap, Net of Tax Amount	'	-77	'	28
Less: reclassification adjustment for loss on termination of interest rate swap realized in net income, Net of Tax Amount	'	1,213	'	1,213
Total cash flow hedge derivative, Net of Tax Amount	'	1,136	'	1,241
Defined benefit pension plans, Net of Tax Amount	'	'	'	'
Less: amortization of net actuarial loss included in net periodic pension costs, Net of Tax Amount	108	227	215	417
Less: accretion of prior service cost included in net periodic pension costs, Net of Tax Amount	-44	-42	-93	-83
Total defined benefit pension plans, Net of Tax Amount	64	185	122	334
Other comprehensive income (loss), Net of Tax Amount	1,554	-5,530	3,307	-6,309
Total comprehensive income (loss), Net of Tax Amount	$6,634	($700)	$14,113	$3,919

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)	Total	Common Stock [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]
In Thousands, except Share data
Beginning balance at Dec. 31, 2012	$284,277	$91,332	($6,920)	$62,101	$164,823	($27,059)
Beginning balance, shares at Dec. 31, 2012	'	16,770,232	'	'	'	'
Net income	10,228	'	'	'	10,228	'
Other comprehensive income (loss), net of income tax benefit	-6,309	'	-6,309	'	'	'
Cash dividends declared ($0.40 per share)	-6,693	'	'	'	-6,693	'
Stock issued under dividend reinvestment and employee stock purchase plans and other employee benefit programs	1,363	'	'	5	-33	1,391
Stock issued under dividend reinvestment and employee stock purchase plans and other employee benefit programs, shares	'	79,139	'	'	'	'
Repurchase of cancelled restricted stock awards	'	'	'	519	'	-519
Repurchase of cancelled restricted stock awards, shares	'	-29,533	'	'	'	'
Stock-based compensation	262	'	'	262	'	'
Net tax deficiency on stock-based compensation	-11	'	'	-11	'	'
Purchases of treasury stock	-3,529	'	'	'	'	-3,529
Purchases of treasury stock, shares	'	-206,870	'	'	'	'
Restricted stock awards granted	'	'	'	-1,174	-92	1,266
Restricted stock awards granted, shares	'	70,041	'	'	'	'
Ending balance at Jun. 30, 2013	279,588	91,332	-13,229	61,702	168,233	-28,450
Ending balance, shares at Jun. 30, 2013	'	16,683,009	'	'	'	'
Beginning balance at Dec. 31, 2013	280,506	91,332	-9,955	62,417	172,602	-35,890
Beginning balance, shares at Dec. 31, 2013	'	16,287,812	'	'	'	'
Net income	10,806	'	'	'	10,806	'
Other comprehensive income (loss), net of income tax benefit	3,307	'	3,307	'	'	'
Cash dividends declared ($0.40 per share)	-6,497	'	'	'	-6,497	'
Stock issued under dividend reinvestment and employee stock purchase plans and other employee benefit programs	1,387	'	'	27	'	1,360
Stock issued under dividend reinvestment and employee stock purchase plans and other employee benefit programs, shares	'	69,628	'	'	'	'
Exercise of stock options	24	'	'	-3	'	27
Exercise of stock options, shares	'	1,500	'	'	'	'
Repurchase of cancelled restricted stock awards	'	'	'	235	'	-235
Repurchase of cancelled restricted stock awards, shares	'	-13,625	'	'	'	'
Stock-based compensation	514	'	'	514	'	'
Net tax deficiency on stock-based compensation	-2	'	'	-2	'	'
Purchases of treasury stock	-3,258	'	'	'	'	-3,258
Purchases of treasury stock, shares	'	-171,124	'	'	'	'
Restricted stock awards granted	'	'	'	-1,349	'	1,349
Restricted stock awards granted, shares	'	74,304	'	'	'	'
Ending balance at Jun. 30, 2014	$286,787	$91,332	($6,648)	$61,839	$176,911	($36,647)
Ending balance, shares at Jun. 30, 2014	'	16,248,495	'	'	'	'

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash dividends declared, per share	$0.40	$0.40
Retained Earnings [Member]	'	'
Cash dividends declared, per share	$0.40	$0.40

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net income	$10,806	$10,228
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Provision for loan and lease losses	2,726	5,520
Depreciation of premises and equipment	1,502	1,470
Net gain on sales of investment securities	-557	-1,524
Net gain on mortgage banking activities	-868	-3,112
Net (gain) loss on dispositions of fixed assets	-40	6
Net gain on sales of other real estate owned	'	-252
Loss on termination of interest rate swap	'	1,866
Bank owned life insurance income	-821	-917
Stock-based compensation	514	262
Intangible expenses (income)	1,410	-474
Other adjustments to reconcile net income to cash provided by operating activities	1,013	855
Originations of loans held for sale	-43,642	-176,114
Proceeds from the sale of loans held for sale	45,656	180,931
Contributions to pension and other postretirement benefit plans	-112	-60
Decrease (increase) in accrued interest receivable and other assets	2,081	-3,856
Decrease in accrued interest payable and other liabilities	-2,072	-1,594
Net cash provided by operating activities	17,596	13,235
Cash flows from investing activities:	'	'
Net cash paid due to acquisitions	-5,379	-2,170
Net capital expenditures	-1,365	-747
Proceeds from maturities and calls of securities held-to-maturity	9,000	'
Proceeds from maturities and calls of securities available-for-sale	45,258	23,467
Proceeds from sales of securities available-for-sale	30,286	35,415
Purchases of investment securities available-for-sale	-36,206	-56,860
Net increase in loans and leases	-57,562	-25,154
Net decrease in interest-earning deposits	27,920	6,519
Proceeds from sales of other real estate owned	'	2,330
Net cash provided by (used in) investing activities	11,952	-17,200
Cash flows from financing activities:	'	'
Net (decrease) increase in deposits	-12,264	7,718
Net increase (decrease) in short-term borrowings	7,309	-50,894
Repayment of subordinated debt	'	-375
Purchases of treasury stock	-3,258	-3,529
Stock issued under dividend reinvestment and employee stock purchase plans and other employee benefit programs	1,387	1,363
Proceeds from exercise of stock options	24	'
Cash dividends paid	-6,505	-3,357
Net cash used in financing activities	-13,307	-49,074
Net increase (decrease) in cash and due from banks	16,241	-53,039
Cash and due from banks at beginning of year	32,646	98,399
Cash and due from banks at end of period	48,887	45,360
Supplemental disclosures of cash flow information:	'	'
Cash paid for interest	2,195	3,489
Cash paid for income taxes, net of refunds received	3,019	3,713
Non cash transactions:	'	'
Transfer of loans to other real estate owned	'	1,729
Transfer of loans to loans held for sale	8,926	'
Contingent consideration recorded as goodwill	$5,470	$454

Summary_of_Significant_Account

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Note 1. 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) and its wholly owned subsidiaries; the Corporation’s primary 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 six-month period ended June 30, 2014 are not necessarily indicative of the results that may be expected for the year ended December 31, 2014. 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, 2013, which was filed with the SEC on March 4, 2014.
	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 and assessment for impairment of certain investment securities, reserve for loan and lease losses, valuation of goodwill and other intangible assets, mortgage servicing rights, deferred tax assets and liabilities, benefit plans and stock-based compensation expense.
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (FASB) issued an Accounting Standards Update (ASU) regarding revenue from contracts with customers which clarifies the principles for recognizing revenue and develops a common standard for U.S. GAAP and International Financial Reporting Standards. The ASU establishes a core principle that would require an entity to identify the contract(s) with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when (or as) the entity satisfies a performance obligation. The ASU provides for improved disclosure requirements that require entities to disclose sufficient information that enables users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2016, or January 1, 2017 for the Corporation. The Corporation is in the process of evaluating the impact of the adoption of this guidance on its financial statements; however, it is anticipated the impact will be only related to timing.
	In January 2014, the FASB issued an ASU regarding reclassification of residential real estate collateralized consumer mortgage loans upon foreclosure. The ASU clarifies that when an in-substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The ASU was issued to eliminate diversity in practice on this topic. The amendment is effective for fiscal years and interim periods within those years beginning after December 15, 2014, or January 1, 2015 for the Corporation. The Corporation does not anticipate the adoption of this guidance will have a material impact on its financial statements but will result in expanded disclosures effective March 31, 2015.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	Note 2. Acquisitions
	Valley Green Bank
	On June 17, 2014, the Corporation, the Bank and Valley Green Bank (Valley Green) entered into an Agreement and Plan of Merger (Merger Agreement) pursuant to which Valley Green will be merged with and into the Bank in an all-stock transaction with an aggregate value of approximately $76 million. Headquartered in the Mt. Airy neighborhood of Philadelphia, Pennsylvania, Valley Green had approximately $370 million in assets, $329 million in loans, and $335 million in deposits at March 31, 2014 and operates three full-service banking offices and two loan production offices in the greater Philadelphia marketplace.
	Under the terms of the Merger Agreement, Valley Green shareholders will receive shares of the Corporation’s common stock equal to $27.00 for each share of Valley Green stock outstanding, subject to certain adjustments depending upon the changes in the price of the Corporation’s common stock. The final exchange ratio will be based upon an average closing price of the Corporation’s common stock over the 20 consecutive trading day period ending on the day prior to the closing date.
	With the assumption of Valley Green’s three branches and two loan production offices in the Philadelphia marketplace, the Corporation enters a new small business and consumer market and expands its existing lending network within southeastern Pennsylvania. Upon the closing, Valley Green will operate as a separate division of the Bank, under the Valley Green brand. The transaction is anticipated to be accretive to the Corporation’s earnings per share in the first combined year of operations.
	The Merger Agreement has been approved by the Boards of Directors of the Corporation, the Bank and Valley Green and remains subject to approval by the shareholders of both companies, as well as their regulatory authorities. The transaction is expected to qualify as a tax-free reorganization for federal income tax purposes. The transaction is expected to close in the first quarter of 2015.
	Girard Partners
	On January 27, 2014, the Corporation completed the acquisition of Girard Partners, a registered investment advisory firm with more than $500 million in assets under management. The Corporation increased its assets under management to over $3.0 billion at the acquisition date and expanded its advisory capabilities.
	The Corporation paid $5.4 million in cash at closing with additional contingent consideration to be paid in annual installments over the five-year period ending December 31, 2018, based on the achievement of certain levels of EBITDA (earnings before interest, taxes, depreciation and amortization). As of the effective date of the acquisition, January 1, 2014, the Corporation recorded the estimated fair value of the contingent consideration of $5.5 million in other liabilities. The potential cash payments that could result from the contingent consideration arrangement range from $0 to a maximum of $14.5 million cumulative over the next five years. As a result of the Girard Partners acquisition, the Corporation recorded goodwill of $6.8 million (inclusive of the contingent consideration) and customer related intangibles of $4.3 million. The goodwill is expected to be deductible for tax purposes. The customer related intangibles are being amortized over nine years using the sum-of-the-years-digits amortization method.

Investment_Securities

Investment Securities	6 Months Ended
	Jun. 30, 2014
Investments Debt And Equity Securities [Abstract]	'
Investment Securities	'
	Note 3. 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 June 30, 2014 and December 31, 2013, by contractual maturity within each type:
		At June 30, 2014											At December 31, 2013
	(Dollars in thousands)	Amortized		Gross			Gross			Fair Value			Amortized		Gross			Gross			Fair Value
		Cost		Unrealized			Unrealized						Cost		Unrealized			Unrealized
				Gains			Losses								Gains			Losses
	Securities Held-to-Maturity
	Corporate bonds:
	Within 1 year	$	13,160	$	240		$	—		$	13,400		$	11,148	$	122		$	—		$	11,270
	After 1 year to 5 years		43,444		680			(25	)		44,099			54,855		992			(264	)		55,583
			56,604		920			(25	)		57,499			66,003		1,114			(264	)		66,853
	Total	$	56,604	$	920		$	(25	)	$	57,499		$	66,003	$	1,114		$	(264	)	$	66,853
	Securities Available-for-Sale
	U.S. treasuries:
	After 5 years to 10 years	$	4,969	$	—		$	(161	)	$	4,808		$	4,966	$	—		$	(258	)	$	4,708
			4,969		—			(161	)		4,808			4,966		—			(258	)		4,708
	U.S. government corporations and agencies:
	Within 1 year		—		—			—			—			5,999		16			—			6,015
	After 1 year to 5 years		112,614		130			(413	)		112,331			112,989		114			(1,226	)		111,877
	After 5 years to 10 years		10,747		—			(196	)		10,551			10,816		—			(560	)		10,256
			123,361		130			(609	)		122,882			129,804		130			(1,786	)		128,148
	State and political subdivisions:
	Within 1 year		600		2			—			602			1,564		13			—			1,577
	After 1 year to 5 years		9,407		26			(20	)		9,413			5,305		14			(29	)		5,290
	After 5 years to 10 years		46,951		1,458			(150	)		48,259			41,974		710			(698	)		41,986
	Over 10 years		47,081		2,068			(59	)		49,090			57,899		1,227			(322	)		58,804
			104,039		3,554			(229	)		107,364			106,742		1,964			(1,049	)		107,657
	Residential mortgage-backed securities:
	After 5 years to 10 years		9,977		—			(143	)		9,834			10,008		5			(53	)		9,960
	Over 10 years		2,280		55			—			2,335			25,721		20			(221	)		25,520
			12,257		55			(143	)		12,169			35,729		25			(274	)		35,480
	Collateralized mortgage obligations:
	After 1 year to 5 years		8		—			—			8			73		—			—			73
	Over 10 years		6,851		41			(197	)		6,695			7,341		40			(253	)		7,128
			6,859		41			(197	)		6,703			7,414		40			(253	)		7,201
	Corporate bonds:
	After 1 year to 5 years		21,920		92			(137	)		21,875			18,838		52			(411	)		18,479
	After 5 years to 10 years		20,950		7			(220	)		20,737			16,474		4			(1,117	)		15,361
			42,870		99			(357	)		42,612			35,312		56			(1,528	)		33,840
	Money market mutual funds:
	No stated maturity		4,011		—			—			4,011			16,900		—			—			16,900
			4,011		—			—			4,011			16,900		—			—			16,900
	Equity securities:
	No stated maturity		854		453			—			1,307			1,679		668			—			2,347
			854		453			—			1,307			1,679		668			—			2,347
	Total	$	299,220	$	4,332		$	(1,696	)	$	301,856		$	338,546	$	2,883		$	(5,148	)	$	336,281
	Expected maturities may differ from contractual maturities because debt issuers may have the right to call or prepay obligations without call or prepayment penalties. Unrealized losses in investment securities at June 30, 2014 and December 31, 2013 do not represent other-than-temporary impairments.
	Securities with a carrying value of $232.5 million and $271.1 million at June 30, 2014 and December 31, 2013, respectively, were pledged to secure public deposits and for other purposes as required by law.
	The following table presents information related to sales of securities available-for-sale during the six months ended June 30, 2014 and 2013:
		Six Months Ended June 30,
	(Dollars in thousands)	2014		2013
	Securities available-for-sale:
	Proceeds from sales	$	30,286	$	35,415
	Gross realized gains on sales		557		1,524
	Gross realized losses on sales		—		—
	Tax expense related to net realized gains on sales		195		533
	Management evaluates debt securities, which are comprised of U.S. government, government sponsored agencies, municipalities, corporate bonds and other issuers, for other-than-temporary impairment and considers the current economic conditions, the length of time and the extent to which the fair value has been less than cost, interest rates and the bond rating of each security. All of the debt securities are rated as investment grade and management believes that it will not incur any losses. The unrealized losses on the Corporation’s investments in debt securities are temporary in nature since they are primarily related to market interest rates and are not related to the underlying credit quality of the issuers within our investment portfolio. The Corporation does not have the intent to sell the debt securities and believes it is more likely than not, that it will not have to sell the securities before recovery of their cost basis. The Corporation did not recognize any other-than-temporary impairment charges on debt securities for the six months ended June 30, 2014 and 2013.
	At June 30, 2014 and December 31, 2013, 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 June 30, 2014 and December 31, 2013 by the length of time those securities were in a continuous loss position:
		Less than					Twelve Months						Total
		Twelve Months					or Longer
	(Dollars in thousands)	Fair Value		Unrealized			Fair Value			Unrealized			Fair Value		Unrealized
				Losses						Losses					Losses
At June 30, 2014
U.S. treasuries	$	—	$	—		$	4,808		$	(161	)	$	4,808	$	(161	)
U.S. government corporations and agencies		—		—			77,693			(609	)		77,693		(609	)
State and political subdivisions		4,177		(8	)		13,274			(221	)		17,451		(229	)
Residential mortgage-backed securities		4,731		(133	)		5,103			(10	)		9,834		(143	)
Collateralized mortgage obligations		—		—			3,891			(197	)		3,891		(197	)
Corporate bonds		10,986		(39	)		26,087			(343	)		37,073		(382	)
Total	$	19,894	$	(180	)	$	130,856		$	(1,541	)	$	150,750	$	(1,721	)
At December 31, 2013
U.S. treasuries	$	4,708	$	(258	)	$	—		$	—		$	4,708	$	(258	)
U.S. government corporations and agencies		101,813		(1,786	)		—			—			101,813		(1,786	)
State and political subdivisions		30,233		(1,049	)		—			—			30,233		(1,049	)
Residential mortgage-backed securities		29,444		(274	)		—			—			29,444		(274	)
Collateralized mortgage obligations		4,091		(253	)		—			—			4,091		(253	)
Corporate bonds		46,499		(1,792	)		—			—			46,499		(1,792	)
Total	$	216,788	$	(5,412	)	$	—		$	—		$	216,788	$	(5,412	)

Loans_and_Leases

Loans and Leases	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
Loans and Leases	'
	Note 4. Loans and Leases
	Summary of Major Loan and Lease Categories
	(Dollars in thousands)		At June 30, 2014			At December 31, 2013
	Commercial, financial and agricultural		$	447,993		$	422,816
	Real estate-commercial			626,060			600,353
	Real estate-construction			76,735			90,493
	Real estate-residential secured for business purpose			35,284			37,319
	Real estate-residential secured for personal purpose			162,352			149,164
	Real estate-home equity secured for personal purpose			98,880			95,345
	Loans to individuals			31,564			40,000
	Lease financings			108,126			105,994
	Total loans and leases held for investment, net of deferred income		$	1,586,994		$	1,541,484
	Unearned lease income, included in the above table		$	(13,742	)	$	(14,439	)
	Net deferred costs, included in the above table			2,832			2,744
	Overdraft deposits included in the above table			68			62
	Overdraft deposits are re-classified as loans and are included in the total loans and leases on the balance sheet.
	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 June 30, 2014 and December 31, 2013:
	(Dollars in thousands)		30-59			60-89			90 Days			Total			Current			Total Loans			Recorded
			Days			Days			or more			Past Due						and Leases			Investment 90
			Past Due			Past Due			Past Due									Held for			Days or more
																		Investment			Past Due and
																					Accruing
																					Interest
	At June 30, 2014
	Commercial, financial and agricultural		$	377		$	391		$	787		$	1,555		$	446,438		$	447,993		$	—
	Real estate—commercial real estate and construction:
	Commercial real estate			1,363			—			923			2,286			623,774			626,060			—
	Construction			—			—			7,185			7,185			69,550			76,735			—
	Real estate—residential and home equity:
	Residential secured for business purpose			19			59			654			732			34,552			35,284			—
	Residential secured for personal purpose			492			44			256			792			161,560			162,352			—
	Home equity secured for personal purpose			101			10			104			215			98,665			98,880			—
	Loans to individuals			414			216			216			846			30,718			31,564			216
	Lease financings			1,275			487			624			2,386			105,740			108,126			308
	Total		$	4,041		$	1,207		$	10,749		$	15,997		$	1,570,997		$	1,586,994		$	524
	At December 31, 2013
	Commercial, financial and agricultural		$	386		$	922		$	2,904		$	4,212		$	418,604		$	422,816		$	12
	Real estate—commercial real estate and construction:
	Commercial real estate			148			262			4,932			5,342			595,011			600,353			—
	Construction			—			—			8,742			8,742			81,751			90,493			—
	Real estate—residential and home equity:
	Residential secured for business purpose			87			276			161			524			36,795			37,319			—
	Residential secured for personal purpose			1,370			—			617			1,987			147,177			149,164			—
	Home equity secured for personal purpose			278			97			100			475			94,870			95,345			23
	Loans to individuals			445			193			319			957			39,043			40,000			319
	Lease financings			2,182			455			389			3,026			102,968			105,994			59
	Total		$	4,896		$	2,205		$	18,164		$	25,265		$	1,516,219		$	1,541,484		$	413
	Non-Performing Loans and Leases
	The following presents, by class of loans and leases, non-performing loans and leases at June 30, 2014 and December 31, 2013:
			At June 30, 2014												At December 31, 2013
	(Dollars in thousands)		Nonaccrual			Accruing			Loans and			Total Non-			Nonaccrual			Accruing			Loans and			Total Non-
			Loans and			Troubled			Leases			Performing			Loans and			Troubled			Leases			Performing
			Leases*			Debt			90 Days			Loans and			Leases*			Debt			90 Days			Loans and
						Restructured			or more			Leases						Restructured			or more			Leases
						Loans and			Past Due									Loans and			Past Due
						Lease			and									Lease			and
						Modifications			Accruing									Modifications			Accruing
									Interest												Interest
	Loans held for sale **		$	532		$	—		$	—		$	532		$	—		$	—		$	—		$	—
	Loans and leases held for investment:
	Commercial, financial and agricultural			3,182			1,238			—			4,420			4,253			1,329			12			5,594
	Real estate—commercial real estate and construction:
Commercial real estate			3,901			2,623			—			6,524			8,091			4,271			—			12,362
Construction			7,996			2,479			—			10,475			9,159			2,307			—			11,466
Real estate—residential and home equity:
Residential secured for business purpose			927			—			—			927			224			—			—			224
Residential secured for personal purpose			783			—			—			783			1,101			—			—			1,101
Home equity secured for personal purpose			104			—			—			104			77			—			23			100
Loans to individuals			1			—			216			217			—			36			319			355
Lease financings			316			—			308			624			330			—			59			389
Total		$	17,742		$	6,340		$	524		$	24,606		$	23,235		$	7,943		$	413		$	31,591
*	Includes nonaccrual troubled debt restructured loans and lease modifications of $2.2 million and $1.6 million at June 30, 2014 and December 31, 2013, respectively.
**	Includes real estate construction loan of $532 thousand at June 30, 2014.
Credit Quality Indicators
The following tables present by class, the recorded investment in loans and leases held for investment by credit quality indicator at June 30, 2014 and December 31, 2013.
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 risk ratings of one through five are reviewed based on the relationship dollar amount with the borrower: loans with a relationship total of $2.5 million or greater are reviewed quarterly; loans with a relationship balance of less than $2.5 million but greater than $500 thousand are reviewed annually based on the borrower’s fiscal year; loans with a relationship balance of less than $500 thousand are reviewed only if the loan becomes 60 days or more past due. Loans with risk ratings of six are also reviewed based on the relationship dollar amount with the borrower: loans with a relationship balance of $2.0 million or greater are reviewed quarterly; loans with a relationship balance of less than $2.0 million but greater than $500 thousand are reviewed annually; loans with a relationship balance of less than $500 thousand are reviewed only if the loan becomes 60 days or more past due. Loans with risk ratings of seven are reviewed at least quarterly, and as often as monthly, at management’s discretion. Loans with risk ratings of eight through ten are reviewed monthly.
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
(Dollars in thousands)		Commercial,			Real Estate—			Real Estate—			Real Estate—			Total
		Financial and			Commercial			Construction			Residential Secured
		Agricultural									for Business Purpose
At June 30, 2014
Grade:
1. Cash secured/ 2. Fully secured		$	4,533		$	1,858		$	3,489		$	—		$	9,880
3. Strong			7,574			9,135			3,954			—			20,663
4. Satisfactory			28,620			16,610			8,689			247			54,166
5. Acceptable			276,339			417,051			44,643			24,955			762,988
6. Pre-watch			66,948			115,956			4,307			4,675			191,886
7. Special Mention			13,439			12,660			2,053			1,740			29,892
8. Substandard			50,540			52,790			9,600			3,667			116,597
9. Doubtful			—			—			—			—			—
10.Loss			—			—			—			—			—
Total		$	447,993		$	626,060		$	76,735		$	35,284		$	1,186,072
At December 31, 2013
Grade:
1. Cash secured/ 2. Fully secured		$	4,763		$	2,014		$	1,682		$	—		$	8,459
3. Strong			6,051			8,515			4,300			—			18,866
4. Satisfactory			34,650			17,758			1,500			261			54,169
5. Acceptable			251,203			384,061			54,464			26,694			716,422
6. Pre-watch			84,201			113,181			16,084			5,884			219,350
7. Special Mention			10,095			19,445			—			1,841			31,381
8. Substandard			31,508			55,331			12,463			2,639			101,941
9. Doubtful			345			48			—			—			393
10.Loss			—			—			—			—			—
Total		$	422,816		$	600,353		$	90,493		$	37,319		$	1,150,981
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 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. Nonperforming loans and leases are loans or leases with a well-defined weakness and where collection in-full is improbable.
(Dollars in thousands)		Real Estate—			Real Estate—			Loans to			Lease			Total
		Residential			Home Equity			Individuals			Financing
		Secured for			Secured for
		Personal Purpose			Personal Purpose
At June 30, 2014
Performing		$	161,569		$	98,776		$	31,347		$	107,502		$	399,194
Nonperforming			783			104			217			624			1,728
Total		$	162,352		$	98,880		$	31,564		$	108,126		$	400,922
At December 31, 2013
Performing		$	148,063		$	95,245		$	39,645		$	105,605		$	388,558
Nonperforming			1,101			100			355			389			1,945
Total		$	149,164		$	95,345		$	40,000		$	105,994		$	390,503
Risks associated with lending activities include, among other things, the impact of changes in interest rates and economic conditions, which may adversely impact the ability of borrowers to repay outstanding loans, and impact the value of the associated collateral.
Commercial, financial and agricultural loans, commercial real estate loans, construction loans and residential real estate loans with a business purpose are generally perceived as having more risk of default than residential real estate loans with a personal purpose and consumer loans. These types of loans involve larger loan balances to a single borrower or groups of related borrowers. Commercial real estate loans may be affected to a greater extent than residential loans by adverse conditions in real estate markets or the economy because commercial real estate borrowers’ ability to repay their loans depends on successful development of their properties and factors affecting residential real estate borrowers.
Commercial, financial and agricultural business loans are typically based on the borrowers’ ability to repay the loans from the cash flow of their businesses. These loans may involve greater risk because the availability of funds to repay each loan depends substantially on the success of the business itself. In addition, the collateral securing the loans often depreciates over time, is difficult to appraise and liquidate and fluctuates in value based on the success of the business.
Risk of loss on a construction loan depends largely upon whether our initial estimate of the property’s value at completion of construction equals or exceeds the cost of the property construction (including interest). During the construction phase, a number of factors can result in delays and cost overruns. If estimates of value are inaccurate or if actual construction costs exceed estimates, the value of the property securing the loan may be insufficient to ensure full repayment when completed through a permanent loan or by seizure of collateral. Included in real estate-construction is track development financing. Risk factors related to track development financing include the demand for residential housing and the real estate valuation market. When projects move slower than anticipated, the properties may have significantly lower values than when the original underwriting was completed, resulting in lower collateral values to support the loan. Extended time frames also cause the interest carrying cost for a project to be higher than the builder projected, negatively impacting the builder’s profit and cash flow and, therefore, their ability to make principal and interest payments.
Commercial real estate loans and residential real estate loans with a business purpose secured by owner-occupied properties are dependent upon the successful operation of the borrower’s business. If the operating company suffers difficulties in terms of sales volume and/or profitability, the borrower’s ability to repay the loan may be impaired. Loans secured by properties where repayment is dependent upon payment of rent by third party tenants or the sale of the property may be impacted by loss of tenants, lower lease rates needed to attract new tenants or the inability to sell a completed project in a timely fashion and at a profit.
Commercial, financial and agricultural loans, commercial real estate loans, construction loans and residential real estate loans secured for a business purpose are more susceptible to a risk of loss during a downturn in the business cycle. The Corporation has strict underwriting, review, and monitoring procedures in place, however, these procedures cannot eliminate all of the risks related to these loans.
The Corporation focuses on both assessing the borrower’s capacity and willingness to repay and on obtaining sufficient collateral. Commercial, financial and agricultural loans are generally secured by the borrower’s assets and by personal guarantees. Commercial real estate and residential real estate loans secured for a business purpose are originated primarily within the Southeastern Pennsylvania market area at conservative loan-to-value ratios and often with a guarantee of the borrowers. Management closely monitors the composition and quality of the total commercial loan portfolio to ensure that any credit concentrations by borrower or industry are closely monitored.
The Corporation originates fixed-rate and adjustable-rate real estate-residential mortgage loans that are secured by the underlying 1- to 4-family residential properties for personal purposes. Credit risk exposure in this area of lending is minimized by the evaluation of the credit worthiness of the borrower, including debt-to-equity ratios, credit scores and adherence to underwriting policies that emphasize conservative loan-to-value ratios of generally no more than 80%. Residential mortgage loans granted in excess of the 80% loan-to-value ratio criterion are generally insured by private mortgage insurance.
In the real estate-home equity loan portfolio secured for a personal purpose, credit exposure is minimized by the evaluation of the creditworthiness of the borrower, including debt-to-equity ratios, credit scores and adherence to the Corporation’s underwriting policies. Combined loan-to-value ratios are generally limited to 80%, but increased to 85% for the Corporation’s strongest profile borrower. Other credit considerations and compensating factors may warrant higher combined loan-to-value ratios.
Credit risk for direct consumer loans is controlled by strict adherence to conservative underwriting standards that consider debt-to-income levels and the creditworthiness of the borrower and, if secured, collateral values. These loans are included within the portfolio of loans to individuals.
The primary risks that are involved with lease financing receivables are credit underwriting and borrower industry concentrations. The Corporation has strict underwriting, review, and monitoring procedures in place to mitigate this risk. Risk also lies in the residual value of the underlying equipment. Residual values are subject to judgments as to the value of the underlying equipment that can be affected by changes in economic and market conditions and the financial viability of the residual guarantors and insurers. To the extent not guaranteed or assumed by a third party, or otherwise insured against, the Corporation bears the risk of ownership of the leased assets. This includes the risk that the actual value of the leased assets at the end of the lease term will be less than the residual value. The Corporation greatly reduces this risk primarily by using $1.00 buyout leases, in which the entire cost of the leased equipment is included in the contractual payments, leaving no residual payment at the end of the lease terms.
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, 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 for the three and six months ended June 30, 2014 and 2013:
(Dollars in thousands)		Commercial,			Real Estate—			Real Estate—			Real Estate—			Loans to			Lease			Unallocated			Total
		Financial			Commercial			Residential			Residential			Individuals			Financings
		and			and			Secured for			and Home
		Agricultural			Construction			Business			Equity
								Purpose			Secured for
											Personal
											Purpose
Three Months Ended June 30, 2014
Reserve for loan and lease losses:
Beginning balance		$	9,547		$	9,247		$	1,056		$	1,221		$	598		$	1,295		$	1,603		$	24,567
Charge-offs			(250	)		(1,251	)		(98	)		(10	)		(267	)		(143	)		N/A			(2,019	)
Recoveries			63			—			45			26			81			80			N/A			295
Provision (recovery of provision)			354			1,267			22			11			(7	)		(131	)		(265	)		1,251
Ending balance		$	9,714		$	9,263		$	1,025		$	1,248		$	405		$	1,101		$	1,338		$	24,094
Three Months Ended June 30, 2013
Reserve for loan and lease losses:
Beginning balance		$	11,883		$	8,032		$	570		$	792		$	628		$	1,358		$	1,959		$	25,222
Charge-offs			(90	)		(3,691	)		(24	)		(23	)		(224	)		(267	)		N/A			(4,319	)
Recoveries			39			42			—			1			78			209			N/A			369
(Recovery of provision) provision			(437	)		4,279			40			314			211			(88	)		(873	)		3,446
Ending balance		$	11,395		$	8,662		$	586		$	1,084		$	693		$	1,212		$	1,086		$	24,718
Six Months Ended June 30, 2014
Reserve for loan and lease losses:
Beginning balance		$	9,789		$	8,780		$	1,062		$	1,284		$	694		$	1,285		$	1,600		$	24,494
Charge-offs			(1,689	)		(1,308	)		(114	)		(90	)		(490	)		(290	)		N/A			(3,981	)
Recoveries			109			370			48			27			159			142			N/A			855
Provision (recovery of provision)			1,505			1,421			29			27			42			(36	)		(262	)		2,726
Ending balance		$	9,714		$	9,263		$	1,025		$	1,248		$	405		$	1,101		$	1,338		$	24,094
Six Months Ended June 30, 2013
Reserve for loan and lease losses:
Beginning balance		$	11,594		$	7,507		$	639		$	980		$	679		$	1,326		$	2,021		$	24,746
Charge-offs			(1,161	)		(4,073	)		(74	)		(27	)		(404	)		(426	)		N/A			(6,165	)
Recoveries			87			48			8			3			112			359			N/A			617
Provision (recovery of provision)			875			5,180			13			128			306			(47	)		(935	)		5,520
Ending balance		$	11,395		$	8,662		$	586		$	1,084		$	693		$	1,212		$	1,086		$	24,718
N/A – Not applicable
(Dollars in thousands)		Commercial,			Real Estate—			Real Estate—			Real Estate—			Loans to			Lease			Unallocated			Total
		Financial			Commercial			Residential			Residential			Individuals			Financings
		and			and			Secured for			and Home
		Agricultural			Construction			Business			Equity
								Purpose			Secured for
											Personal
											Purpose
At June 30, 2014
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment		$	680		$	8		$	456		$	—		$	—		$	—		$	N/A		$	1,144
Ending balance: collectively evaluated for impairment			9,034			9,255			569			1,248			405			1,101			1,338			22,950
Total ending balance		$	9,714		$	9,263		$	1,025		$	1,248		$	405		$	1,101		$	1,338		$	24,094
Loans and leases held for investment:
Ending balance: individually evaluated for impairment		$	14,800		$	34,259		$	2,477		$	887		$	1		$	—					$	52,424
Ending balance: collectively evaluated for impairment			433,193			668,536			32,807			260,345			31,563			108,126						1,534,570
Total ending balance		$	447,993		$	702,795		$	35,284		$	261,232		$	31,564		$	108,126					$	1,586,994
At June 30, 2013
Reserve for loan and lease losses:
Ending balance: individually evaluated for impairment		$	230		$	—		$	—		$	—		$	—		$	—		$	N/A		$	230
Ending balance: collectively evaluated for impairment			11,165			8,662			586			1,084			693			1,212			1,086			24,488
Total ending balance		$	11,395		$	8,662		$	586		$	1,084		$	693		$	1,212		$	1,086		$	24,718
Loans and leases held for investment:
Ending balance: individually evaluated for impairment		$	3,146		$	34,471		$	169		$	730		$	38		$	—					$	38,554
Ending balance: collectively evaluated for impairment			436,761			629,956			32,160			227,381			43,560			91,621						1,461,439
Total ending balance		$	439,907		$	664,427		$	32,329		$	228,111		$	43,598		$	91,621					$	1,499,993
N/A – Not applicable
Impaired Loans
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 an allowance for credit losses and the amounts for which there is an allowance for credit losses at June 30, 2014 and December 31, 2013:
		At June 30, 2014									At December 31, 2013
(Dollars in thousands)		Recorded			Unpaid			Related			Recorded			Unpaid			Related
		Investment			Principal			Allowance			Investment			Principal			Allowance
					Balance									Balance
Impaired loans with no related allowance recorded:
Loans held for sale		$	532		$	2,987					$	—		$	—
Loans held for investment:
Commercial, financial and agricultural			13,121			13,865						10,890			11,749
Real estate—commercial real estate			21,522			23,587						28,883			35,700
Real estate—construction			11,292			11,639						12,357			14,540
Real estate—residential secured for business purpose			901			914						224			235
Real estate—residential secured for personal purpose			783			803						131			131
Real estate—home equity secured for personal purpose			104			104						77			77
Loans to individuals			1			1						36			54
Total impaired loans with no allowance recorded		$	48,256		$	53,900					$	52,598		$	62,486
Impaired loans with an allowance recorded:
Commercial, financial and agricultural		$	1,679		$	1,679		$	680		$	3,215		$	3,272		$	2,398
Real estate—commercial real estate			1,445			1,445			8			—			—			—
Real estate—residential secured for business purpose			1,576			1,576			456			1,550			1,550			501
Real estate—residential secured for personal purpose			—			—			—			970			976			64
Total impaired loans with an allowance recorded		$	4,700		$	4,700		$	1,144		$	5,735		$	5,798		$	2,963
		At June 30, 2014									At December 31, 2013
(Dollars in thousands)		Recorded			Unpaid			Related			Recorded			Unpaid			Related
		Investment			Principal			Allowance			Investment			Principal			Allowance
					Balance									Balance
Total impaired loans:
Loans held for sale		$	532		$	2,987		$	—		$	—		$	—		$	—
Loans held for investment:
Commercial, financial and agricultural			14,800			15,544			680			14,105			15,021			2,398
Real estate—commercial real estate			22,967			25,032			8			28,883			35,700			—
Real estate—construction			11,292			11,639			—			12,357			14,540			—
Real estate—residential secured for business purpose			2,477			2,490			456			1,774			1,785			501
Real estate—residential secured for personal purpose			783			803			—			1,101			1,107			64
Real estate—home equity secured for personal purpose			104			104			—			77			77			—
Loans to individuals			1			1			—			36			54			—
Total impaired loans		$	52,956		$	58,600		$	1,144		$	58,333		$	68,284		$	2,963
Impaired loans includes nonaccrual loans and leases, accruing troubled debt restructured loans and lease modifications 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 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 included other accruing impaired loans of $29.2 million and $27.5 million at June 30, 2014 and December 31, 2013, respectively. Specific reserves on other accruing impaired loans were $674 thousand and $1.6 million at June 30, 2014 and December 31, 2013, 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 June 30, 2014									Three Months Ended June 30, 2013
(Dollars in thousands)		Average			Interest			Additional			Average			Interest			Additional
		Recorded			Income			Interest Income			Recorded			Income			Interest Income
		Investment			Recognized*			That Would			Investment			Recognized*			That Would
								Have Been									Have Been
								Recognized									Recognized
								Under Original									Under Original
								Terms									Terms
Loans held for investment:
Commercial, financial and agricultural		$	13,296		$	124		$	51		$	2,469		$	8		$	23
Real estate—commercial real estate			23,666			253			72			21,434			147			191
Real estate—construction			12,357			41			123			15,675			28			185
Real estate—residential secured for business purpose			2,574			17			15			169			—			2
Real estate—residential secured for personal purpose			762			—			18			751			—			12
Real estate—home equity secured for personal purpose			90			—			1			6			—			—
Loans to individuals			2			—			—			38			1			—
Total		$	52,747		$	435		$	280		$	40,542		$	184		$	413
*	There was no interest income recognized on a cash basis for nonaccrual loans for the three months ended June 30, 2014 and 2013; includes interest income recognized on the accrual method for accruing impaired loans of $435 thousand and $184 thousand for the three months ended June 30, 2014 and 2013, respectively.
		Six Months Ended June 30, 2014									Six Months Ended June 30, 2013
(Dollars in thousands)		Average			Interest			Additional			Average			Interest			Additional
		Recorded			Income			Interest Income			Recorded			Income			Interest Income
		Investment			Recognized*			That Would			Investment			Recognized*			That Would
								Have Been									Have Been
								Recognized									Recognized
								Under Original									Under Original
								Terms									Terms
Loans held for investment:
Commercial, financial and agricultural		$	13,794		$	251		$	116		$	2,731		$	16		$	62
Real estate—commercial real estate			24,884			535			166			22,732			302			416
Real estate—construction			12,412			83			247			15,758			56			369
Real estate—residential secured for business purpose			2,272			33			35			178			—			5
Real estate—residential secured for personal purpose			888			—			32			773			—			24
Real estate—home equity secured for personal purpose			84			—			2			3			—			—
Loans to individuals			6			—			—			42			2			—
Total		$	54,340		$	902		$	598		$	42,217		$	376		$	876
*	Includes interest income recognized on a cash basis for nonaccrual loans of $23 thousand and $6 thousand for the six months ended June 30, 2014 and 2013, respectively and interest income recognized on the accrual method for accruing impaired loans of $879 thousand and $370 thousand for the six months ended June 30, 2014 and 2013, respectively.
Troubled Debt Restructured Loans
The following presents, by class of loans, information regarding accruing and nonaccrual loans that were restructured:
		Three Months Ended June 30, 2014												Three Months Ended June 30, 2013
(Dollars in thousands)		Number			Pre-			Post-			Related			Number			Pre-			Post-			Related
		of			Restructuring			Restructuring			Allowance			of			Restructuring			Restructuring			Allowance
		Loans			Outstanding			Outstanding						Loans			Outstanding			Outstanding
					Recorded			Recorded									Recorded			Recorded
					Investment			Investment									Investment			Investment
Accruing Troubled Debt Restructured Loans:
Commercial, financial and agricultural			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
Total			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
Nonaccrual Troubled Debt Restructured Loans:
Total			—		$	—		$	—		$	—			—		$	—		$	—		$	—
		Six Months Ended June 30, 2014												Six Months Ended June 30, 2013
(Dollars in thousands)		Number			Pre-			Post-			Related			Number			Pre-			Post-			Related
		of			Restructuring			Restructuring			Allowance			of			Restructuring			Restructuring			Allowance
		Loans			Outstanding			Outstanding						Loans			Outstanding			Outstanding
					Recorded			Recorded									Recorded			Recorded
					Investment			Investment									Investment			Investment
Accruing Troubled Debt Restructured Loans:
Commercial, financial and agricultural			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
Total			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
Nonaccrual Troubled Debt Restructured Loans:
Real estate—commercial real estate			1		$	50		$	50		$	—			—		$	—		$	—		$	—
Real estate—residential secured for business purpose			2			688			688			—			—			—			—			—
Total			3		$	738		$	738		$	—			—		$	—		$	—		$	—
The Corporation grants concessions primarily related to extensions of interest-only payment periods and an occasional payment modification. These modifications typically are for a short-term basis up to one year. Our goal when restructuring a credit is to afford the customer 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 the types of concessions granted on accruing and nonaccrual loans that were restructured during the three and six months ended June 30, 2014 and 2013.
		Interest Only Term						Interest Rate						Maturity Date						Total Concessions
		Extension						Reduction						Extension						Granted
(Dollars in thousands)		No. of			Amount			No. of			Amount			No. of			Amount			No. of			Amount
		Loans						Loans						Loans						Loans
Three Months Ended June 30, 2014
Accruing Troubled Debt Restructured Loans:
Total			—		$	—			—		$	—			—		$	—			—		$	—
Nonaccrual Troubled Debt Restructured Loans:
Total			—		$	—			—		$	—			—		$	—			—		$	—
Three Months Ended June 30, 2013
Accruing Troubled Debt Restructured Loans:
Commercial, financial and agricultural			1		$	1,000			—		$	—			—		$	—			1		$	1,000
Total			1		$	1,000			—		$	—			—		$	—			1		$	1,000
Nonaccrual Troubled Debt Restructured Loans:
Total			—		$	—			—		$	—			—		$	—			—		$	—
Six Months Ended June 30, 2014
Accruing Troubled Debt Restructured Loans:			—		$	—			—		$	—			—		$	—			—		$	—
Total			—		$	—			—		$	—			—		$	—			—		$	—
Nonaccrual Troubled Debt Restructured Loans:
Real estate—commercial real estate			—		$	—			1		$	50			—		$	—			1		$	50
Real estate—residential secured for business purpose			—			—			1			55			1			633			2			688
Total			—		$	—			2		$	105			1		$	633			3		$	738
Six Months Ended June 30, 2013
Accruing Troubled Debt Restructured Loans:
Commercial, financial and agricultural			1		$	1,000			—		$	—			—		$	—			1		$	1,000
Total			1		$	1,000			—		$	—			—		$	—			1		$	1,000
Nonaccrual Troubled Debt Restructured Loans:
Total			—		$	—			—		$	—			—		$	—			—		$	—
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 June 30,												Six Months Ended June 30,
		2014						2013						2014						2013
(Dollars in thousands)		Number			Recorded			Number			Recorded			Number			Recorded			Number			Recorded
		of Loans			Investment			of Loans			Investment			of Loans			Investment			of Loans			Investment
Accruing Troubled Debt Restructured Loans:
Commercial, financial and agricultural			—		$	—			—		$	—			—		$	—			3		$	230
Total			—		$	—			—		$	—			—		$	—			3		$	230
Nonaccrual Troubled Debt Restructured Loans:
Total			—		$	—			—		$	—			—		$	—			—		$	—

Mortgage_Servicing_Rights

Mortgage Servicing Rights	6 Months Ended
	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Mortgage Servicing Rights	'
	Note 5. Mortgage Servicing Rights
	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 $7.0 million and $7.2 million at June 30, 2014 and December 31, 2013, respectively. The fair value of mortgage servicing rights was determined using discount rates ranging from 5.0% to 10.0% at both June 30, 2014 and December 31, 2013.
	Changes in the mortgage servicing rights balance are summarized as follows:
		Three Months Ended							Six Months Ended
		June 30,							June 30,
	(Dollars in thousands)	2014				2013			2014			2013
	Beginning of period	$	5,406			$	4,723		$	5,519		$	4,152
	Servicing rights capitalized		236				871			359			1,639
	Amortization of servicing rights		(264	)			(381	)		(507	)		(812	)
	Changes in valuation allowance		—				14			7			248
	End of period	$	5,378			$	5,227		$	5,378		$	5,227
	Mortgage loans serviced for others	$	761,413			$	705,999		$	761,413		$	705,999
	Activity in the valuation allowance for mortgage servicing rights was as follows:
		Three Months Ended							Six Months Ended
		June 30,							June 30,
	(Dollars in thousands)	2014				2013			2014			2013
	Valuation allowance, beginning of period	$	(243	)		$	(263	)	$	(250	)	$	(497	)
	Additions		—				—			—			—
	Reductions		—				14			7			248
	Direct write-downs		—				—			—			—
	Valuation allowance, end of period	$	(243	)		$	(249	)	$	(243	)	$	(249	)
	The estimated amortization expense of mortgage servicing rights for the remainder of 2014 and the succeeding fiscal years is as follows:
	Year	(Dollars in thousands)		Amount
	Remainder of 2014			$	433
	2015				792
	2016				679
	2017				576
	2018				482
	Thereafter				2,416

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Note 6. Income Taxes
	At June 30, 2014 and December 31, 2013, the Corporation had no material unrecognized tax benefits, accrued interest or penalties. Penalties are recorded in noninterest expense in the year they are assessed and are treated as a non-deductible expense for tax purposes. Interest is recorded in noninterest expense in the year it is assessed and is treated as a deductible expense for tax purposes. At June 30, 2014, the Corporation’s tax years 2010 through 2013 remain subject to federal examination as well as examination by state taxing jurisdictions.

Retirement_Plans_and_Other_Pos

Retirement Plans and Other Postretirement Benefits	6 Months Ended
	Jun. 30, 2014
Compensation And Retirement Disclosure [Abstract]	'
Retirement Plans and Other Postretirement Benefits	'
	Note 7. 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, a portion of which is in excess of limits imposed on qualified plans by federal tax law. These plans are non-qualified benefit plans. 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.
	Information with respect to the Retirement Plans and Other Postretirement Benefits follows:
	Components of net periodic benefit cost (income) were as follows:
		Three Months Ended June 30,
		2014			2013			2014			2013
	(Dollars in thousands)	Retirement Plans						Other Post Retirement
								Benefits
	Service cost	$	137		$	155		$	18		$	25
	Interest cost		475			426			31			27
	Expected return on plan assets		(745	)		(709	)		—			—
	Amortization of net actuarial loss		165			343			2			6
	Accretion of prior service cost		(71	)		(59	)		2			(4	)
	Net periodic benefit (income) cost	$	(39	)	$	156		$	53		$	54
		Six Months Ended June 30,
		2014			2013			2014			2013
	(Dollars in thousands)	Retirement Plans						Other Post Retirement
								Benefits
	Service cost	$	273		$	311		$	37		$	46
	Interest cost		950			857			67			56
	Expected return on plan assets		(1,490	)		(1,264	)		—			—
	Amortization of net actuarial loss		326			629			5			12
	Accretion of prior service cost		(141	)		(118	)		(3	)		(9	)
	Net periodic benefit (income) cost	$	(82	)	$	415		$	106		$	105
	The Corporation previously disclosed in its financial statements for the year ended December 31, 2013, that it expected to make contributions of $162 thousand to its non-qualified retirement plans and $94 thousand to its other postretirement benefit plans in 2014. During the six months ended June 30, 2014, the Corporation contributed $66 thousand to its non-qualified retirement plans and $46 thousand to its other postretirement plans. During the six months ended June 30, 2014, $1.0 million has been paid to participants from the retirement plans and $46 thousand has been paid to participants from the other postretirement plans.

Earnings_per_Share

Earnings per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings per Share	'
	Note 8. Earnings per Share
	The following table sets forth the computation of basic and diluted earnings per share:
		Three Months Ended				Six Months Ended
		June 30,				June 30,
	(Dollars and shares in thousands, except per share data)	2014		2013		2014		2013
	Numerator for basic and diluted earnings per share—income available to common shareholders	$	5,080	$	4,830	$	10,806	$	10,228
	Denominator for basic earnings per share—weighted-average shares outstanding		16,243		16,696		16,250		16,742
	Effect of dilutive securities—employee stock options and awards		86		51		86		54
	Denominator for diluted earnings per share—adjusted weighted-average shares outstanding		16,329		16,747		16,336		16,796
	Basic earnings per share	$	0.31	$	0.29	$	0.67	$	0.61
	Diluted earnings per share	$	0.31	$	0.29	$	0.66	$	0.61
	Average anti-dilutive options and awards excluded from computation of diluted earnings per share		521		668		502		661

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive (Loss) Income	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Accumulated Other Comprehensive (Loss) Income	'
	Note 9. 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
			(Losses) Gains  on			Related to			Related to			Other
			Available-for-Sale			Derivative Used			Defined Benefit			Comprehensive
			Investment			for Cash Flow			Pension Plan			(Loss) Income
			Securities			Hedge
	Balance, December 31, 2013		$	(1,472	)	$	—		$	(8,483	)	$	(9,955	)
	Net Change			3,185			—			122			3,307
	Balance, June 30, 2014		$	1,713		$	—		$	(8,361	)	$	(6,648	)
	Balance, December 31, 2012		$	8,344		$	(1,241	)	$	(14,023	)	$	(6,920	)
	Net Change			(7,884	)		1,241			334			(6,309	)
	Balance, June 30, 2013		$	460		$	—		$	(13,689	)	$	(13,229	)
	The following table illustrates the amounts reclassified out of each component of accumulated comprehensive (loss) income for the three and six months ended June 30, 2014 and 2013:
	Details about Accumulated Other		Amount Reclassified from Accumulated												Affected Line Item in the
	Comprehensive (Loss) Income Components		Other Comprehensive (Loss) Income												Statement of Income
			Three Months Ended						Six Months Ended
			June 30,						June 30,
	(Dollars in thousands)		2014			2013			2014			2013
	Net unrealized holding gains (losses) on available-for-sale investment securities:
			$	415		$	1,339		$	557		$	1,524		Net gain on sales of investment securities
				415			1,339			557			1,524		Total before tax
				(145	)		(468	)		(195	)		(533	)	Tax expense
			$	270		$	871		$	362		$	991		Net of tax
	Cash flow hedge derivative:
			$	—		$	(1,866	)	$	—		$	(1,866	)	Net loss on interest rate swap
				—			(1,866	)		—			(1,866	)	Total before tax
				—			653			—			653		Tax benefit
			$	—		$	(1,213	)	$	—		$	(1,213	)	Net of tax
	Defined benefit pension plans:
	Amortization of net loss included in net periodic pension costs*		$	(167	)	$	(349	)	$	(331	)	$	(641	)
	Accretion of prior service cost included in net periodic pension costs*			69			63			144			127
				(98	)		(286	)		(187	)		(514	)	Total before tax
				34			101			65			180		Tax benefit
			$	(64	)	$	(185	)	$	(122	)	$	(334	)	Net of tax
	*	These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost. (See Note 7—Retirement Plans and Other Postretirement Benefits for additional details.)

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	6 Months Ended
	Jun. 30, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Derivative Instruments and Hedging Activities	'
	Note 10. Derivative Instruments and Hedging Activities
	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.
	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.
	The following table presents the notional amounts and fair values of derivatives not designated as hedging instruments recorded on the consolidated balance sheets at June 30, 2014 and December 31, 2013:
						Derivative Assets								Derivative Liabilities
	(Dollars in thousands)	Notional				Balance Sheet				Fair				Balance Sheet				Fair
		Amount				Classification				Value				Classification				Value
	At June 30, 2014
	Interest rate locks with customers	$	25,847				Other Assets			$	769				—			$	—
	Forward loan sale commitments		26,721				—				—				Other Liabilities				188
	Total	$	52,568							$	769							$	188
	At December 31, 2013
	Interest rate locks with customers	$	15,176				Other Assets			$	321				—			$	—
	Forward loan sale commitments		17,425				Other Assets				25				—				—
	Total	$	32,601							$	346							$	—
	There were no derivatives designated as hedging instruments recorded on the consolidated balance sheets at June 30, 2014 and December 31, 2013.
	For the three and six months ended June 30, 2014 and 2013, the amounts included in the consolidated statements of income for derivatives not designated as hedging instruments are shown in the table below:
		Statement of Income Classification		Three Months Ended								Six Months Ended
				June 30,								June 30,
	(Dollars in thousands)			2014				2013				2014				2013
	Interest rate locks with customers	Net gain (loss) on mortgage banking activities		$	350			$	(1,549	)		$	448			$	(1,611	)
	Forward loan sale commitments	Net (loss) gain on mortgage banking activities			(200	)			994				(213	)			826
	Total			$	150			$	(555	)		$	235			$	(785	)
	For the three and six months ended June 30, 2014 and 2013, the amounts included in the consolidated statements of income for derivatives designated as hedging instruments are shown in the table below:
		Statement of Income		Three Months Ended								Six Months Ended
		Classification		June 30,								June 30,
	(Dollars in thousands)			2014				2013				2014				2013
	Interest rate swap—cash flow hedge—loss on termination	Net loss on termination of interest rate swap		$	—			$	(1,866	)		$	—			$	(1,866	)
	Interest rate swap—cash flow hedge—interest payments	Interest expense			—				9				—				124
	Interest rate swap—cash flow hedge—ineffectiveness	Interest expense			—				—				—				—
	Net loss			$	—			$	(1,875	)		$	—			$	(1,990	)

Fair_Value_Disclosures

Fair Value Disclosures	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures	'
	Note 11. 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 its 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 the 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 close of business at period end. 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. Examples of instruments, which would generally be classified within Level 2 of the valuation hierarchy, include securities issued by U.S. Government sponsored enterprises, mortgage-backed securities, collateralized mortgage obligations, corporate and municipal bonds and certain equity securities. 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 have not 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.
	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. Additionally, on an annual basis, the Corporation has its security portfolio priced by a second pricing service to determine consistency with another market evaluator, except for municipal bonds which are priced by another service provider on a sample basis. If, upon the Corporation’s review or in comparing with another servicer, a material difference between pricing evaluations were to exist, the Corporation may submit an inquiry to its current pricing service regarding the data used to make the valuation of a particular security. If the Corporation determines it has market information that would support a different valuation than its current pricing service’s evaluation it can submit a challenge for a change to that security’s valuation. There were no material differences in valuations noted at June 30, 2014.
	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. Derivative financial instruments are classified within Level 2 of the valuation hierarchy.
	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 in the discount rate or 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.
	For the Girard Partners acquisition, the potential cash payments that could result from the contingent consideration arrangement range from $0 to a maximum of $14.5 million cumulative over the five-year period ending December 31, 2018.
	For the John T. Fretz Insurance Agency acquisition, the remaining potential future cash payments that could result from the contingent consideration arrangement range from $0 to a maximum of $620 thousand cumulative over the two-year period ending April 30, 2016.
	For the Javers Group acquisition, the Corporation recorded a reduction to the contingent liability during the second quarter of 2013 which resulted in a reduction of other noninterest expense of $959 thousand. The adjustment reflects that revenue levels necessary for an earn-out payment in the first year post-acquisition were not met and that revenue growth levels necessary to qualify for subsequent years’ earn-out payments to be made are remote. Therefore, as of June 30, 2014, the fair value of this contingent consideration liability is $0. The Javers’ original contingent consideration arrangement ranged from $0 to a maximum of $1.7 million cumulative over the three-year period ending June 30, 2015.
	The following table presents the assets and liabilities measured at fair value on a recurring basis at June 30, 2014 and December 31, 2013, classified using the fair value hierarchy:
		At June 30, 2014
	(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/
									Liabilities at
									Fair Value
	Assets:
	Available-for-sale securities:
	U.S. treasuries	$	4,808	$	—		$	—	$	4,808
	U.S. government corporations and agencies		—		122,882			—		122,882
	State and political subdivisions		—		107,364			—		107,364
	Residential mortgage-backed securities		—		12,169			—		12,169
	Collateralized mortgage obligations		—		6,703			—		6,703
	Corporate bonds		—		42,612			—		42,612
	Money market mutual funds		4,011		—			—		4,011
	Equity securities		1,307		—			—		1,307
	Total available-for-sale securities		10,126		291,730			—		301,856
	Interest rate locks with customers		—		769			—		769
	Total assets	$	10,126	$	292,499		$	—	$	302,625
	Liabilities:
	Contingent consideration liability	$	—	$	—		$	6,187	$	6,187
	Forward loan sale commitments		—		188			—		188
	Total liabilities	$	—	$	188		$	6,187	$	6,375
		At December 31, 2013
	(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/
									Liabilities at
									Fair Value
	Assets:
	Available-for-sale securities:
	U.S. treasuries	$	4,708	$	—		$	—	$	4,708
	U.S. government corporations and agencies		—		128,148			—		128,148
	State and political subdivisions		—		107,657			—		107,657
	Residential mortgage-backed securities		—		35,480			—		35,480
	Collateralized mortgage obligations		—		7,201			—		7,201
	Corporate bonds		—		33,840			—		33,840
	Money market mutual funds		16,900		—			—		16,900
	Equity securities		2,347		—			—		2,347
	Total available-for-sale securities		23,955		312,326			—		336,281
	Interest rate locks with customers		—		321			—		321
	Forward loan sale commitments		—		25			—		25
	Total assets	$	23,955	$	312,672		$	—	$	336,627
	Liabilities:
	Contingent consideration liability	$	—	$	—		$	501	$	501
	Total liabilities	$	—	$	—		$	501	$	501
	At June 30, 2014 and December 31, 2013, the Corporation had no assets measured at fair value on a recurring basis utilizing Level 3 inputs.
	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 six months ended June 30, 2014 and 2013:
		Six Months Ended June 30, 2014
(Dollars in thousands)	Balance at		Contingent			Payment of		Adjustment			Balance at
	December 31,		Consideration			Contingent		of Contingent			June 30,
	2013		from New			Consideration		Consideration			2014
			Acquisition
Girard Partners	$	—	$	5,470		$	—	$	384		$	5,854
John T. Fretz Insurance Agency		501		—			310		142			333
Total contingent consideration liability	$	501	$	5,470		$	310	$	526		$	6,187
	Six Months Ended June 30, 2013
(Dollars in thousands)	Balance at		Contingent			Payment of		Adjustment			Balance at
	December 31,		Consideration			Contingent		of Contingent			June 30,
	2012		from New			Consideration		Consideration			2013
			Acquisition
Javers Group	$	903	$	—		$	—	$	(903	)	$	—
John T. Fretz Insurance Agency		—		454			—		11			465
Total contingent consideration liability	$	903	$	454		$	—	$	(892	)	$	465
The Corporation may be required periodically to 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 June 30, 2014 and December 31, 2013:
	At June 30, 2014
(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/Liabilities at
								Fair Value
Impaired loans held for investment	$	—	$	—		$	51,280	$	51,280
Total	$	—	$	—		$	51,280	$	51,280
	At December 31, 2013
(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/Liabilities at
								Fair Value
Impaired loans held for investment	$	—	$	—		$	55,370	$	55,370
Total	$	—	$	—		$	55,370	$	55,370
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 June 30, 2014 and December 31, 2013. The disclosed fair values are classified using the fair value hierarchy.
	At June 30, 2014
(Dollars in thousands)	Level 1		Level 2			Level 3		Fair			Carrying
								Value			Amount
Assets:
Cash and short-term interest-earning assets	$	57,607	$	—		$	—	$	57,607		$	57,607
Held-to-maturity securities		—		57,499			—		57,499			56,604
Loans held for sale		—		9,816			532		10,348			9,811
Net loans and leases held for investment		—		—			1,524,160		1,524,160			1,511,620
Mortgage servicing rights		—		—			6,989		6,989			5,378
Other real estate owned		—		1,650			—		1,650			1,650
Total assets	$	57,607	$	68,965		$	1,531,681	$	1,658,253		$	1,642,670
Liabilities:
Deposits:
Demand and savings deposits, non-maturity	$	1,564,004	$	—		$	—	$	1,564,004		$	1,564,004
Time deposits		—		270,978			—		270,978			268,230
Total deposits		1,564,004		270,978			—		1,834,982			1,832,234
Short-term borrowings		—		45,066			—		45,066			45,066
Total liabilities	$	1,564,004	$	316,044		$	—	$	1,880,048		$	1,877,300
Off-Balance-Sheet:
Commitments to extend credit	$	—	$	(1,381	)	$	—	$	(1,381	)	$	—
	At December 31, 2013
(Dollars in thousands)	Level 1		Level 2			Level 3		Fair			Carrying
								Value			Amount
Assets:
Cash and short-term interest-earning assets	$	69,169	$	—		$	—	$	69,169		$	69,169
Held-to-maturity securities		—		66,853			—		66,853			66,003
Loans held for sale		—		2,267			—		2,267			2,267
Net loans and leases held for investment		—		—			1,477,945		1,477,945			1,461,620
Mortgage servicing rights		—		7,188			—		7,188			5,519
Other real estate owned		—		1,650			—		1,650			1,650
Total assets	$	69,169	$	77,958		$	1,477,945	$	1,625,072		$	1,606,228
Liabilities:
Deposits:
Demand and savings deposits, non-maturity	$	1,573,709	$	—		$	—	$	1,573,709		$	1,573,709
Time deposits		—		268,909			—		268,909			270,789
Total deposits		1,573,709		268,909			—		1,842,618			1,844,498
Short-term borrowings		—		35,687			—		35,687			37,256
Total liabilities	$	1,573,709	$	304,596		$	—	$	1,878,305		$	1,881,754
Off-Balance-Sheet:
Commitments to extend credit	$	—	$	(1,357	)	$	—	$	(1,357	)	$	—
The following valuation methods and assumptions were used by the Corporation in estimating its 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, and other short-term investments approximates those assets’ fair values. 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.
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. At June 30, 2014, credit card loans totaling $8.4 million and a nonaccrual real estate construction loan for $532 thousand were transferred to loans held for sale. The credit card loans were valued at the principal amount and a premium based on the agreement of sale. The fair value of the non-accrual construction loan was measured based on the value of the collateral securing the loan less costs to sell and is classified within Level 3 in the fair value hierarchy. 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 June 30, 2014 and December 31, 2013.
Loans and leases held for investment: The fair values for loans 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 and include components for credit risk, operating expense and embedded prepayment options. An overall valuation adjustment is made for specific credit risks in addition to general portfolio risk and is significant to the valuation. As permitted, the fair value of the loans and leases are not based on the exit price concept as discussed in the first paragraph of this note. Loans and leases are classified within Level 3 in the fair value hierarchy.
Impaired loans held for investment: Impaired loans held for investment include those collateral-dependent loans for which the practical expedient was applied, resulting in a fair-value adjustment to the loan. Impaired loans are evaluated and valued at the time the loan is identified as impaired, at the lower of cost or fair value. Fair value is measured based on the value of the collateral securing these loans less costs to sell and is classified at a Level 3 in the fair value hierarchy. The fair value of collateral is based on appraisals performed by qualified licensed appraisers hired by the Corporation. At June 30, 2014, impaired loans held for investment had a carrying amount of $52.4 million with a valuation allowance of $1.1 million. At December 31, 2013, impaired loans held for investment had a carrying amount of $58.3 million with a valuation allowance of $3.0 million.
Mortgage 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 were classified within Level 2 of the valuation hierarchy at December 31, 2013. The Corporation’s valuation model has not changed from December 31, 2013; however, management’s assessment of the inputs has resulted in mortgage servicing rights being classified within Level 3 of the valuation hierarchy at June 30, 2014. 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. At June 30, 2014, mortgage servicing rights had a carrying amount of $5.6 million with a valuation allowance of $243 thousand. At December 31, 2013, mortgage servicing rights had a carrying amount of $5.8 million with a valuation allowance of $250 thousand.
Goodwill and other identifiable intangible 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 six months ended June 30, 2014, 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 is estimated based upon its appraised value less costs to sell. The real estate is stated at an amount equal to the loan balance prior to foreclosure, plus costs incurred for improvements to the property but no more than the fair value of the property, less estimated costs to sell. New appraisals are generally obtained on an annual basis. Other real estate owned is classified within Level 2 of the valuation hierarchy.
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 customer repurchase agreements and federal funds purchased are estimated using current market rates for similar borrowings and 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.

Subsequent_Event

Subsequent Event	6 Months Ended
	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Event	'
	Note 12. Subsequent Event
	On July 1, 2014, the Corporation and its insurance subsidiary, Univest Insurance, Inc., completed the acquisition of Sterner Insurance Associates, Inc., a full service firm providing insurance and consultative risk management solutions to individuals and businesses throughout the Lehigh Valley, Berks, Bucks and Montgomery counties.
	The Corporation paid $3.9 million in cash and assumed liabilities of $940 thousand at closing with additional contingent consideration to be paid in annual installments over the three-year period ending June 30, 2017, based on the achievement of certain levels of revenue growth and EBITDA (earnings before interest, taxes, depreciation and amortization). At the acquisition date, the Corporation recorded the estimated fair value of the contingent consideration of $635 thousand in other liabilities. The potential cash payments that could result from the contingent consideration arrangement range from $0 to a maximum of $5.7 million cumulative over the next three years. As a result of the Sterner Insurance acquisition, the Corporation recorded goodwill of $3.4 million (inclusive of the contingent consideration) and customer related intangibles of $1.6 million. The goodwill is expected to be deductible for tax purposes. The customer related intangibles are being amortized over nine years using the sum-of-the-years-digits amortization method.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2014
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) and its wholly owned subsidiaries; the Corporation’s primary 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 six-month period ended June 30, 2014 are not necessarily indicative of the results that may be expected for the year ended December 31, 2014. 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, 2013, which was filed with the SEC on March 4, 2014.
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 and assessment for impairment of certain investment securities, reserve for loan and lease losses, valuation of goodwill and other intangible assets, mortgage servicing rights, deferred tax assets and liabilities, benefit plans and stock-based compensation expense.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board (FASB) issued an Accounting Standards Update (ASU) regarding revenue from contracts with customers which clarifies the principles for recognizing revenue and develops a common standard for U.S. GAAP and International Financial Reporting Standards. The ASU establishes a core principle that would require an entity to identify the contract(s) with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when (or as) the entity satisfies a performance obligation. The ASU provides for improved disclosure requirements that require entities to disclose sufficient information that enables users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2016, or January 1, 2017 for the Corporation. The Corporation is in the process of evaluating the impact of the adoption of this guidance on its financial statements; however, it is anticipated the impact will be only related to timing.
	In January 2014, the FASB issued an ASU regarding reclassification of residential real estate collateralized consumer mortgage loans upon foreclosure. The ASU clarifies that when an in-substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The ASU was issued to eliminate diversity in practice on this topic. The amendment is effective for fiscal years and interim periods within those years beginning after December 15, 2014, or January 1, 2015 for the Corporation. The Corporation does not anticipate the adoption of this guidance will have a material impact on its financial statements but will result in expanded disclosures effective March 31, 2015.

Investment_Securities_Tables

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2014
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 June 30, 2014 and December 31, 2013, by contractual maturity within each type:
		At June 30, 2014											At December 31, 2013
	(Dollars in thousands)	Amortized		Gross			Gross			Fair Value			Amortized		Gross			Gross			Fair Value
		Cost		Unrealized			Unrealized						Cost		Unrealized			Unrealized
				Gains			Losses								Gains			Losses
	Securities Held-to-Maturity
	Corporate bonds:
	Within 1 year	$	13,160	$	240		$	—		$	13,400		$	11,148	$	122		$	—		$	11,270
	After 1 year to 5 years		43,444		680			(25	)		44,099			54,855		992			(264	)		55,583
			56,604		920			(25	)		57,499			66,003		1,114			(264	)		66,853
	Total	$	56,604	$	920		$	(25	)	$	57,499		$	66,003	$	1,114		$	(264	)	$	66,853
	Securities Available-for-Sale
	U.S. treasuries:
	After 5 years to 10 years	$	4,969	$	—		$	(161	)	$	4,808		$	4,966	$	—		$	(258	)	$	4,708
			4,969		—			(161	)		4,808			4,966		—			(258	)		4,708
	U.S. government corporations and agencies:
	Within 1 year		—		—			—			—			5,999		16			—			6,015
	After 1 year to 5 years		112,614		130			(413	)		112,331			112,989		114			(1,226	)		111,877
	After 5 years to 10 years		10,747		—			(196	)		10,551			10,816		—			(560	)		10,256
			123,361		130			(609	)		122,882			129,804		130			(1,786	)		128,148
	State and political subdivisions:
	Within 1 year		600		2			—			602			1,564		13			—			1,577
	After 1 year to 5 years		9,407		26			(20	)		9,413			5,305		14			(29	)		5,290
	After 5 years to 10 years		46,951		1,458			(150	)		48,259			41,974		710			(698	)		41,986
	Over 10 years		47,081		2,068			(59	)		49,090			57,899		1,227			(322	)		58,804
			104,039		3,554			(229	)		107,364			106,742		1,964			(1,049	)		107,657
	Residential mortgage-backed securities:
	After 5 years to 10 years		9,977		—			(143	)		9,834			10,008		5			(53	)		9,960
	Over 10 years		2,280		55			—			2,335			25,721		20			(221	)		25,520
			12,257		55			(143	)		12,169			35,729		25			(274	)		35,480
	Collateralized mortgage obligations:
	After 1 year to 5 years		8		—			—			8			73		—			—			73
	Over 10 years		6,851		41			(197	)		6,695			7,341		40			(253	)		7,128
			6,859		41			(197	)		6,703			7,414		40			(253	)		7,201
	Corporate bonds:
	After 1 year to 5 years		21,920		92			(137	)		21,875			18,838		52			(411	)		18,479
	After 5 years to 10 years		20,950		7			(220	)		20,737			16,474		4			(1,117	)		15,361
			42,870		99			(357	)		42,612			35,312		56			(1,528	)		33,840
	Money market mutual funds:
	No stated maturity		4,011		—			—			4,011			16,900		—			—			16,900
			4,011		—			—			4,011			16,900		—			—			16,900
	Equity securities:
	No stated maturity		854		453			—			1,307			1,679		668			—			2,347
			854		453			—			1,307			1,679		668			—			2,347
	Total	$	299,220	$	4,332		$	(1,696	)	$	301,856		$	338,546	$	2,883		$	(5,148	)	$	336,281
Information Related to Sales of Securities Available-for-Sale	'
	The following table presents information related to sales of securities available-for-sale during the six months ended June 30, 2014 and 2013:
		Six Months Ended June 30,
	(Dollars in thousands)	2014		2013
	Securities available-for-sale:
	Proceeds from sales	$	30,286	$	35,415
	Gross realized gains on sales		557		1,524
	Gross realized losses on sales		—		—
	Tax expense related to net realized gains on sales		195		533
Amount of Securities in Unrealized Loss Position	'
	The following table shows the fair value of securities that were in an unrealized loss position at June 30, 2014 and December 31, 2013 by the length of time those securities were in a continuous loss position:
		Less than					Twelve Months						Total
		Twelve Months					or Longer
	(Dollars in thousands)	Fair Value		Unrealized			Fair Value			Unrealized			Fair Value		Unrealized
				Losses						Losses					Losses
	At June 30, 2014
	U.S. treasuries	$	—	$	—		$	4,808		$	(161	)	$	4,808	$	(161	)
	U.S. government corporations and agencies		—		—			77,693			(609	)		77,693		(609	)
	State and political subdivisions		4,177		(8	)		13,274			(221	)		17,451		(229	)
	Residential mortgage-backed securities		4,731		(133	)		5,103			(10	)		9,834		(143	)
	Collateralized mortgage obligations		—		—			3,891			(197	)		3,891		(197	)
	Corporate bonds		10,986		(39	)		26,087			(343	)		37,073		(382	)
	Total	$	19,894	$	(180	)	$	130,856		$	(1,541	)	$	150,750	$	(1,721	)
	At December 31, 2013
	U.S. treasuries	$	4,708	$	(258	)	$	—		$	—		$	4,708	$	(258	)
	U.S. government corporations and agencies		101,813		(1,786	)		—			—			101,813		(1,786	)
	State and political subdivisions		30,233		(1,049	)		—			—			30,233		(1,049	)
	Residential mortgage-backed securities		29,444		(274	)		—			—			29,444		(274	)
	Collateralized mortgage obligations		4,091		(253	)		—			—			4,091		(253	)
	Corporate bonds		46,499		(1,792	)		—			—			46,499		(1,792	)
	Total	$	216,788	$	(5,412	)	$	—		$	—		$	216,788	$	(5,412	)

Loans_and_Leases_Tables

Loans and Leases (Tables)	6 Months Ended
	Jun. 30, 2014
Text Block [Abstract]	'
Summary of Major Loan and Lease Categories	'
	Summary of Major Loan and Lease Categories
	(Dollars in thousands)		At June 30, 2014			At December 31, 2013
	Commercial, financial and agricultural		$	447,993		$	422,816
	Real estate-commercial			626,060			600,353
	Real estate-construction			76,735			90,493
	Real estate-residential secured for business purpose			35,284			37,319
	Real estate-residential secured for personal purpose			162,352			149,164
	Real estate-home equity secured for personal purpose			98,880			95,345
	Loans to individuals			31,564			40,000
	Lease financings			108,126			105,994
	Total loans and leases held for investment, net of deferred income		$	1,586,994		$	1,541,484
	Unearned lease income, included in the above table		$	(13,742	)	$	(14,439	)
	Net deferred costs, included in the above table			2,832			2,744
	Overdraft deposits included in the above table			68			62
Age Analysis of Past Due Loans and Leases	'
	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 June 30, 2014 and December 31, 2013:
	(Dollars in thousands)		30-59			60-89			90 Days			Total			Current			Total Loans			Recorded
			Days			Days			or more			Past Due						and Leases			Investment 90
			Past Due			Past Due			Past Due									Held for			Days or more
																		Investment			Past Due and
																					Accruing
																					Interest
	At June 30, 2014
	Commercial, financial and agricultural		$	377		$	391		$	787		$	1,555		$	446,438		$	447,993		$	—
	Real estate—commercial real estate and construction:
	Commercial real estate			1,363			—			923			2,286			623,774			626,060			—
	Construction			—			—			7,185			7,185			69,550			76,735			—
	Real estate—residential and home equity:
	Residential secured for business purpose			19			59			654			732			34,552			35,284			—
	Residential secured for personal purpose			492			44			256			792			161,560			162,352			—
	Home equity secured for personal purpose			101			10			104			215			98,665			98,880			—
	Loans to individuals			414			216			216			846			30,718			31,564			216
	Lease financings			1,275			487			624			2,386			105,740			108,126			308
	Total		$	4,041		$	1,207		$	10,749		$	15,997		$	1,570,997		$	1,586,994		$	524
	At December 31, 2013
	Commercial, financial and agricultural		$	386		$	922		$	2,904		$	4,212		$	418,604		$	422,816		$	12
	Real estate—commercial real estate and construction:
	Commercial real estate			148			262			4,932			5,342			595,011			600,353			—
	Construction			—			—			8,742			8,742			81,751			90,493			—
	Real estate—residential and home equity:
	Residential secured for business purpose			87			276			161			524			36,795			37,319			—
	Residential secured for personal purpose			1,370			—			617			1,987			147,177			149,164			—
	Home equity secured for personal purpose			278			97			100			475			94,870			95,345			23
	Loans to individuals			445			193			319			957			39,043			40,000			319
	Lease financings			2,182			455			389			3,026			102,968			105,994			59
	Total		$	4,896		$	2,205		$	18,164		$	25,265		$	1,516,219		$	1,541,484		$	413
Non-Performing Loans and Leases	'
	Non-Performing Loans and Leases
	The following presents, by class of loans and leases, non-performing loans and leases at June 30, 2014 and December 31, 2013:
			At June 30, 2014												At December 31, 2013
	(Dollars in thousands)		Nonaccrual			Accruing			Loans and			Total Non-			Nonaccrual			Accruing			Loans and			Total Non-
			Loans and			Troubled			Leases			Performing			Loans and			Troubled			Leases			Performing
			Leases*			Debt			90 Days			Loans and			Leases*			Debt			90 Days			Loans and
						Restructured			or more			Leases						Restructured			or more			Leases
						Loans and			Past Due									Loans and			Past Due
						Lease			and									Lease			and
						Modifications			Accruing									Modifications			Accruing
									Interest												Interest
	Loans held for sale **		$	532		$	—		$	—		$	532		$	—		$	—		$	—		$	—
	Loans and leases held for investment:
	Commercial, financial and agricultural			3,182			1,238			—			4,420			4,253			1,329			12			5,594
	Real estate—commercial real estate and construction:
	Commercial real estate			3,901			2,623			—			6,524			8,091			4,271			—			12,362
	Construction			7,996			2,479			—			10,475			9,159			2,307			—			11,466
	Real estate—residential and home equity:
	Residential secured for business purpose			927			—			—			927			224			—			—			224
	Residential secured for personal purpose			783			—			—			783			1,101			—			—			1,101
	Home equity secured for personal purpose			104			—			—			104			77			—			23			100
	Loans to individuals			1			—			216			217			—			36			319			355
	Lease financings			316			—			308			624			330			—			59			389
	Total		$	17,742		$	6,340		$	524		$	24,606		$	23,235		$	7,943		$	413		$	31,591
	*	Includes nonaccrual troubled debt restructured loans and lease modifications of $2.2 million and $1.6 million at June 30, 2014 and December 31, 2013, respectively.
	**	Includes real estate construction loan of $532 thousand at June 30, 2014.
Credit Quality Indicators	'
	Commercial Credit Exposure Credit Risk by Internally Assigned Grades
	(Dollars in thousands)		Commercial,			Real Estate—			Real Estate—			Real Estate—			Total
			Financial and			Commercial			Construction			Residential Secured
			Agricultural									for Business Purpose
	At June 30, 2014
	Grade:
	1. Cash secured/ 2. Fully secured		$	4,533		$	1,858		$	3,489		$	—		$	9,880
	3. Strong			7,574			9,135			3,954			—			20,663
	4. Satisfactory			28,620			16,610			8,689			247			54,166
	5. Acceptable			276,339			417,051			44,643			24,955			762,988
	6. Pre-watch			66,948			115,956			4,307			4,675			191,886
	7. Special Mention			13,439			12,660			2,053			1,740			29,892
	8. Substandard			50,540			52,790			9,600			3,667			116,597
	9. Doubtful			—			—			—			—			—
	10.Loss			—			—			—			—			—
	Total		$	447,993		$	626,060		$	76,735		$	35,284		$	1,186,072
	At December 31, 2013
	Grade:
	1. Cash secured/ 2. Fully secured		$	4,763		$	2,014		$	1,682		$	—		$	8,459
	3. Strong			6,051			8,515			4,300			—			18,866
	4. Satisfactory			34,650			17,758			1,500			261			54,169
	5. Acceptable			251,203			384,061			54,464			26,694			716,422
	6. Pre-watch			84,201			113,181			16,084			5,884			219,350
	7. Special Mention			10,095			19,445			—			1,841			31,381
	8. Substandard			31,508			55,331			12,463			2,639			101,941
	9. Doubtful			345			48			—			—			393
	10.Loss			—			—			—			—			—
	Total		$	422,816		$	600,353		$	90,493		$	37,319		$	1,150,981
	(Dollars in thousands)		Real Estate—			Real Estate—			Loans to			Lease			Total
			Residential			Home Equity			Individuals			Financing
			Secured for			Secured for
			Personal Purpose			Personal Purpose
	At June 30, 2014
	Performing		$	161,569		$	98,776		$	31,347		$	107,502		$	399,194
	Nonperforming			783			104			217			624			1,728
	Total		$	162,352		$	98,880		$	31,564		$	108,126		$	400,922
	At December 31, 2013
	Performing		$	148,063		$	95,245		$	39,645		$	105,605		$	388,558
	Nonperforming			1,101			100			355			389			1,945
	Total		$	149,164		$	95,345		$	40,000		$	105,994		$	390,503
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, 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 for the three and six months ended June 30, 2014 and 2013:
	(Dollars in thousands)		Commercial,			Real Estate—			Real Estate—			Real Estate—			Loans to			Lease			Unallocated			Total
			Financial			Commercial			Residential			Residential			Individuals			Financings
			and			and			Secured for			and Home
			Agricultural			Construction			Business			Equity
									Purpose			Secured for
												Personal
												Purpose
	Three Months Ended June 30, 2014
	Reserve for loan and lease losses:
	Beginning balance		$	9,547		$	9,247		$	1,056		$	1,221		$	598		$	1,295		$	1,603		$	24,567
	Charge-offs			(250	)		(1,251	)		(98	)		(10	)		(267	)		(143	)		N/A			(2,019	)
	Recoveries			63			—			45			26			81			80			N/A			295
	Provision (recovery of provision)			354			1,267			22			11			(7	)		(131	)		(265	)		1,251
	Ending balance		$	9,714		$	9,263		$	1,025		$	1,248		$	405		$	1,101		$	1,338		$	24,094
	Three Months Ended June 30, 2013
	Reserve for loan and lease losses:
	Beginning balance		$	11,883		$	8,032		$	570		$	792		$	628		$	1,358		$	1,959		$	25,222
	Charge-offs			(90	)		(3,691	)		(24	)		(23	)		(224	)		(267	)		N/A			(4,319	)
	Recoveries			39			42			—			1			78			209			N/A			369
	(Recovery of provision) provision			(437	)		4,279			40			314			211			(88	)		(873	)		3,446
	Ending balance		$	11,395		$	8,662		$	586		$	1,084		$	693		$	1,212		$	1,086		$	24,718
	Six Months Ended June 30, 2014
	Reserve for loan and lease losses:
	Beginning balance		$	9,789		$	8,780		$	1,062		$	1,284		$	694		$	1,285		$	1,600		$	24,494
	Charge-offs			(1,689	)		(1,308	)		(114	)		(90	)		(490	)		(290	)		N/A			(3,981	)
	Recoveries			109			370			48			27			159			142			N/A			855
	Provision (recovery of provision)			1,505			1,421			29			27			42			(36	)		(262	)		2,726
	Ending balance		$	9,714		$	9,263		$	1,025		$	1,248		$	405		$	1,101		$	1,338		$	24,094
	Six Months Ended June 30, 2013
	Reserve for loan and lease losses:
	Beginning balance		$	11,594		$	7,507		$	639		$	980		$	679		$	1,326		$	2,021		$	24,746
	Charge-offs			(1,161	)		(4,073	)		(74	)		(27	)		(404	)		(426	)		N/A			(6,165	)
	Recoveries			87			48			8			3			112			359			N/A			617
	Provision (recovery of provision)			875			5,180			13			128			306			(47	)		(935	)		5,520
	Ending balance		$	11,395		$	8,662		$	586		$	1,084		$	693		$	1,212		$	1,086		$	24,718
	N/A – Not applicable
	(Dollars in thousands)		Commercial,			Real Estate—			Real Estate—			Real Estate—			Loans to			Lease			Unallocated			Total
			Financial			Commercial			Residential			Residential			Individuals			Financings
			and			and			Secured for			and Home
			Agricultural			Construction			Business			Equity
									Purpose			Secured for
												Personal
												Purpose
	At June 30, 2014
	Reserve for loan and lease losses:
	Ending balance: individually evaluated for impairment		$	680		$	8		$	456		$	—		$	—		$	—		$	N/A		$	1,144
	Ending balance: collectively evaluated for impairment			9,034			9,255			569			1,248			405			1,101			1,338			22,950
	Total ending balance		$	9,714		$	9,263		$	1,025		$	1,248		$	405		$	1,101		$	1,338		$	24,094
	Loans and leases held for investment:
	Ending balance: individually evaluated for impairment		$	14,800		$	34,259		$	2,477		$	887		$	1		$	—					$	52,424
	Ending balance: collectively evaluated for impairment			433,193			668,536			32,807			260,345			31,563			108,126						1,534,570
	Total ending balance		$	447,993		$	702,795		$	35,284		$	261,232		$	31,564		$	108,126					$	1,586,994
	At June 30, 2013
	Reserve for loan and lease losses:
	Ending balance: individually evaluated for impairment		$	230		$	—		$	—		$	—		$	—		$	—		$	N/A		$	230
	Ending balance: collectively evaluated for impairment			11,165			8,662			586			1,084			693			1,212			1,086			24,488
	Total ending balance		$	11,395		$	8,662		$	586		$	1,084		$	693		$	1,212		$	1,086		$	24,718
	Loans and leases held for investment:
	Ending balance: individually evaluated for impairment		$	3,146		$	34,471		$	169		$	730		$	38		$	—					$	38,554
	Ending balance: collectively evaluated for impairment			436,761			629,956			32,160			227,381			43,560			91,621						1,461,439
	Total ending balance		$	439,907		$	664,427		$	32,329		$	228,111		$	43,598		$	91,621					$	1,499,993
	N/A – Not applicable
Impaired Loans	'
	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 an allowance for credit losses and the amounts for which there is an allowance for credit losses at June 30, 2014 and December 31, 2013:
			At June 30, 2014									At December 31, 2013
	(Dollars in thousands)		Recorded			Unpaid			Related			Recorded			Unpaid			Related
			Investment			Principal			Allowance			Investment			Principal			Allowance
						Balance									Balance
	Impaired loans with no related allowance recorded:
	Loans held for sale		$	532		$	2,987					$	—		$	—
	Loans held for investment:
	Commercial, financial and agricultural			13,121			13,865						10,890			11,749
	Real estate—commercial real estate			21,522			23,587						28,883			35,700
	Real estate—construction			11,292			11,639						12,357			14,540
	Real estate—residential secured for business purpose			901			914						224			235
	Real estate—residential secured for personal purpose			783			803						131			131
	Real estate—home equity secured for personal purpose			104			104						77			77
	Loans to individuals			1			1						36			54
	Total impaired loans with no allowance recorded		$	48,256		$	53,900					$	52,598		$	62,486
	Impaired loans with an allowance recorded:
	Commercial, financial and agricultural		$	1,679		$	1,679		$	680		$	3,215		$	3,272		$	2,398
	Real estate—commercial real estate			1,445			1,445			8			—			—			—
	Real estate—residential secured for business purpose			1,576			1,576			456			1,550			1,550			501
	Real estate—residential secured for personal purpose			—			—			—			970			976			64
	Total impaired loans with an allowance recorded		$	4,700		$	4,700		$	1,144		$	5,735		$	5,798		$	2,963
			At June 30, 2014									At December 31, 2013
	(Dollars in thousands)		Recorded			Unpaid			Related			Recorded			Unpaid			Related
			Investment			Principal			Allowance			Investment			Principal			Allowance
						Balance									Balance
	Total impaired loans:
	Loans held for sale		$	532		$	2,987		$	—		$	—		$	—		$	—
	Loans held for investment:
	Commercial, financial and agricultural			14,800			15,544			680			14,105			15,021			2,398
	Real estate—commercial real estate			22,967			25,032			8			28,883			35,700			—
	Real estate—construction			11,292			11,639			—			12,357			14,540			—
	Real estate—residential secured for business purpose			2,477			2,490			456			1,774			1,785			501
	Real estate—residential secured for personal purpose			783			803			—			1,101			1,107			64
	Real estate—home equity secured for personal purpose			104			104			—			77			77			—
	Loans to individuals			1			1			—			36			54			—
	Total impaired loans		$	52,956		$	58,600		$	1,144		$	58,333		$	68,284		$	2,963
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 June 30, 2014									Three Months Ended June 30, 2013
	(Dollars in thousands)		Average			Interest			Additional			Average			Interest			Additional
			Recorded			Income			Interest Income			Recorded			Income			Interest Income
			Investment			Recognized*			That Would			Investment			Recognized*			That Would
									Have Been									Have Been
									Recognized									Recognized
									Under Original									Under Original
									Terms									Terms
	Loans held for investment:
	Commercial, financial and agricultural		$	13,296		$	124		$	51		$	2,469		$	8		$	23
	Real estate—commercial real estate			23,666			253			72			21,434			147			191
	Real estate—construction			12,357			41			123			15,675			28			185
	Real estate—residential secured for business purpose			2,574			17			15			169			—			2
	Real estate—residential secured for personal purpose			762			—			18			751			—			12
	Real estate—home equity secured for personal purpose			90			—			1			6			—			—
	Loans to individuals			2			—			—			38			1			—
	Total		$	52,747		$	435		$	280		$	40,542		$	184		$	413
	*	There was no interest income recognized on a cash basis for nonaccrual loans for the three months ended June 30, 2014 and 2013; includes interest income recognized on the accrual method for accruing impaired loans of $435 thousand and $184 thousand for the three months ended June 30, 2014 and 2013, respectively.
			Six Months Ended June 30, 2014									Six Months Ended June 30, 2013
	(Dollars in thousands)		Average			Interest			Additional			Average			Interest			Additional
			Recorded			Income			Interest Income			Recorded			Income			Interest Income
			Investment			Recognized*			That Would			Investment			Recognized*			That Would
									Have Been									Have Been
									Recognized									Recognized
									Under Original									Under Original
									Terms									Terms
	Loans held for investment:
	Commercial, financial and agricultural		$	13,794		$	251		$	116		$	2,731		$	16		$	62
	Real estate—commercial real estate			24,884			535			166			22,732			302			416
	Real estate—construction			12,412			83			247			15,758			56			369
	Real estate—residential secured for business purpose			2,272			33			35			178			—			5
	Real estate—residential secured for personal purpose			888			—			32			773			—			24
	Real estate—home equity secured for personal purpose			84			—			2			3			—			—
	Loans to individuals			6			—			—			42			2			—
	Total		$	54,340		$	902		$	598		$	42,217		$	376		$	876
	*	Includes interest income recognized on a cash basis for nonaccrual loans of $23 thousand and $6 thousand for the six months ended June 30, 2014 and 2013, respectively and interest income recognized on the accrual method for accruing impaired loans of $879 thousand and $370 thousand for the six months ended June 30, 2014 and 2013, respectively.
Troubled Debt Restructured Loans	'
	The following presents, by class of loans, information regarding accruing and nonaccrual loans that were restructured:
			Three Months Ended June 30, 2014												Three Months Ended June 30, 2013
	(Dollars in thousands)		Number			Pre-			Post-			Related			Number			Pre-			Post-			Related
			of			Restructuring			Restructuring			Allowance			of			Restructuring			Restructuring			Allowance
			Loans			Outstanding			Outstanding						Loans			Outstanding			Outstanding
						Recorded			Recorded									Recorded			Recorded
						Investment			Investment									Investment			Investment
	Accruing Troubled Debt Restructured Loans:
	Commercial, financial and agricultural			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
	Total			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
	Nonaccrual Troubled Debt Restructured Loans:
	Total			—		$	—		$	—		$	—			—		$	—		$	—		$	—
			Six Months Ended June 30, 2014												Six Months Ended June 30, 2013
	(Dollars in thousands)		Number			Pre-			Post-			Related			Number			Pre-			Post-			Related
			of			Restructuring			Restructuring			Allowance			of			Restructuring			Restructuring			Allowance
			Loans			Outstanding			Outstanding						Loans			Outstanding			Outstanding
						Recorded			Recorded									Recorded			Recorded
						Investment			Investment									Investment			Investment
	Accruing Troubled Debt Restructured Loans:
	Commercial, financial and agricultural			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
	Total			—		$	—		$	—		$	—			1		$	1,000		$	1,000		$	—
	Nonaccrual Troubled Debt Restructured Loans:
	Real estate—commercial real estate			1		$	50		$	50		$	—			—		$	—		$	—		$	—
	Real estate—residential secured for business purpose			2			688			688			—			—			—			—			—
	Total			3		$	738		$	738		$	—			—		$	—		$	—		$	—
Concessions Granted on Accruing and Nonaccrual Loans Restructured	'
	The following presents, by class of loans, information regarding the types of concessions granted on accruing and nonaccrual loans that were restructured during the three and six months ended June 30, 2014 and 2013.
			Interest Only Term						Interest Rate						Maturity Date						Total Concessions
			Extension						Reduction						Extension						Granted
	(Dollars in thousands)		No. of			Amount			No. of			Amount			No. of			Amount			No. of			Amount
			Loans						Loans						Loans						Loans
	Three Months Ended June 30, 2014
	Accruing Troubled Debt Restructured Loans:
	Total			—		$	—			—		$	—			—		$	—			—		$	—
	Nonaccrual Troubled Debt Restructured Loans:
	Total			—		$	—			—		$	—			—		$	—			—		$	—
	Three Months Ended June 30, 2013
	Accruing Troubled Debt Restructured Loans:
	Commercial, financial and agricultural			1		$	1,000			—		$	—			—		$	—			1		$	1,000
	Total			1		$	1,000			—		$	—			—		$	—			1		$	1,000
	Nonaccrual Troubled Debt Restructured Loans:
	Total			—		$	—			—		$	—			—		$	—			—		$	—
	Six Months Ended June 30, 2014
	Accruing Troubled Debt Restructured Loans:			—		$	—			—		$	—			—		$	—			—		$	—
	Total			—		$	—			—		$	—			—		$	—			—		$	—
	Nonaccrual Troubled Debt Restructured Loans:
	Real estate—commercial real estate			—		$	—			1		$	50			—		$	—			1		$	50
	Real estate—residential secured for business purpose			—			—			1			55			1			633			2			688
	Total			—		$	—			2		$	105			1		$	633			3		$	738
	Six Months Ended June 30, 2013
	Accruing Troubled Debt Restructured Loans:
	Commercial, financial and agricultural			1		$	1,000			—		$	—			—		$	—			1		$	1,000
	Total			1		$	1,000			—		$	—			—		$	—			1		$	1,000
	Nonaccrual Troubled Debt Restructured Loans:
	Total			—		$	—			—		$	—			—		$	—			—		$	—
Accruing and Nonaccrual Troubled Debt Restructured Loans with Payment Defaults	'
	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 June 30,												Six Months Ended June 30,
			2014						2013						2014						2013
	(Dollars in thousands)		Number			Recorded			Number			Recorded			Number			Recorded			Number			Recorded
			of Loans			Investment			of Loans			Investment			of Loans			Investment			of Loans			Investment
	Accruing Troubled Debt Restructured Loans:
	Commercial, financial and agricultural			—		$	—			—		$	—			—		$	—			3		$	230
	Total			—		$	—			—		$	—			—		$	—			3		$	230
	Nonaccrual Troubled Debt Restructured Loans:
	Total			—		$	—			—		$	—			—		$	—			—		$	—

Mortgage_Servicing_Rights_Tabl

Mortgage Servicing Rights (Tables) (Mortgage Servicing Rights [Member])	6 Months Ended
	Jun. 30, 2014
Mortgage Servicing Rights [Member]	'
Changes in Mortgage Servicing Rights	'
	Changes in the mortgage servicing rights balance are summarized as follows:
		Three Months Ended							Six Months Ended
		June 30,							June 30,
	(Dollars in thousands)	2014				2013			2014			2013
	Beginning of period	$	5,406			$	4,723		$	5,519		$	4,152
	Servicing rights capitalized		236				871			359			1,639
	Amortization of servicing rights		(264	)			(381	)		(507	)		(812	)
	Changes in valuation allowance		—				14			7			248
	End of period	$	5,378			$	5,227		$	5,378		$	5,227
	Mortgage loans serviced for others	$	761,413			$	705,999		$	761,413		$	705,999
Activity in Valuation Allowance for Mortgage Servicing Rights	'
	Activity in the valuation allowance for mortgage servicing rights was as follows:
		Three Months Ended							Six Months Ended
		June 30,							June 30,
	(Dollars in thousands)	2014				2013			2014			2013
	Valuation allowance, beginning of period	$	(243	)		$	(263	)	$	(250	)	$	(497	)
	Additions		—				—			—			—
	Reductions		—				14			7			248
	Direct write-downs		—				—			—			—
	Valuation allowance, end of period	$	(243	)		$	(249	)	$	(243	)	$	(249	)
Estimated Amortization Expense of Mortgage Servicing Rights	'
	The estimated amortization expense of mortgage servicing rights for the remainder of 2014 and the succeeding fiscal years is as follows:
	Year	(Dollars in thousands)		Amount
	Remainder of 2014			$	433
	2015				792
	2016				679
	2017				576
	2018				482
	Thereafter				2,416

Retirement_Plans_and_Other_Pos1

Retirement Plans and Other Postretirement Benefits (Tables)	6 Months Ended
	Jun. 30, 2014
Compensation And Retirement Disclosure [Abstract]	'
Components of Net Periodic Benefit Cost (Income)	'
	Components of net periodic benefit cost (income) were as follows:
		Three Months Ended June 30,
		2014			2013			2014			2013
	(Dollars in thousands)	Retirement Plans						Other Post Retirement
								Benefits
	Service cost	$	137		$	155		$	18		$	25
	Interest cost		475			426			31			27
	Expected return on plan assets		(745	)		(709	)		—			—
	Amortization of net actuarial loss		165			343			2			6
	Accretion of prior service cost		(71	)		(59	)		2			(4	)
	Net periodic benefit (income) cost	$	(39	)	$	156		$	53		$	54
		Six Months Ended June 30,
		2014			2013			2014			2013
	(Dollars in thousands)	Retirement Plans						Other Post Retirement
								Benefits
	Service cost	$	273		$	311		$	37		$	46
	Interest cost		950			857			67			56
	Expected return on plan assets		(1,490	)		(1,264	)		—			—
	Amortization of net actuarial loss		326			629			5			12
	Accretion of prior service cost		(141	)		(118	)		(3	)		(9	)
	Net periodic benefit (income) cost	$	(82	)	$	415		$	106		$	105

Earnings_per_Share_Tables

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Basic and Diluted Earnings Per Share	'
	The following table sets forth the computation of basic and diluted earnings per share:
		Three Months Ended				Six Months Ended
		June 30,				June 30,
	(Dollars and shares in thousands, except per share data)	2014		2013		2014		2013
	Numerator for basic and diluted earnings per share—income available to common shareholders	$	5,080	$	4,830	$	10,806	$	10,228
	Denominator for basic earnings per share—weighted-average shares outstanding		16,243		16,696		16,250		16,742
	Effect of dilutive securities—employee stock options and awards		86		51		86		54
	Denominator for diluted earnings per share—adjusted weighted-average shares outstanding		16,329		16,747		16,336		16,796
	Basic earnings per share	$	0.31	$	0.29	$	0.67	$	0.61
	Diluted earnings per share	$	0.31	$	0.29	$	0.66	$	0.61
	Average anti-dilutive options and awards excluded from computation of diluted earnings per share		521		668		502		661

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive (Loss) Income (Tables)	6 Months Ended
	Jun. 30, 2014
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
			(Losses) Gains  on			Related to			Related to			Other
			Available-for-Sale			Derivative Used			Defined Benefit			Comprehensive
			Investment			for Cash Flow			Pension Plan			(Loss) Income
			Securities			Hedge
	Balance, December 31, 2013		$	(1,472	)	$	—		$	(8,483	)	$	(9,955	)
	Net Change			3,185			—			122			3,307
	Balance, June 30, 2014		$	1,713		$	—		$	(8,361	)	$	(6,648	)
	Balance, December 31, 2012		$	8,344		$	(1,241	)	$	(14,023	)	$	(6,920	)
	Net Change			(7,884	)		1,241			334			(6,309	)
	Balance, June 30, 2013		$	460		$	—		$	(13,689	)	$	(13,229	)
Amounts Reclassified Out of Each Component of Accumulated Comprehensive (Loss) Income	'
	The following table illustrates the amounts reclassified out of each component of accumulated comprehensive (loss) income for the three and six months ended June 30, 2014 and 2013:
	Details about Accumulated Other		Amount Reclassified from Accumulated												Affected Line Item in the
	Comprehensive (Loss) Income Components		Other Comprehensive (Loss) Income												Statement of Income
			Three Months Ended						Six Months Ended
			June 30,						June 30,
	(Dollars in thousands)		2014			2013			2014			2013
	Net unrealized holding gains (losses) on available-for-sale investment securities:
			$	415		$	1,339		$	557		$	1,524		Net gain on sales of investment securities
				415			1,339			557			1,524		Total before tax
				(145	)		(468	)		(195	)		(533	)	Tax expense
			$	270		$	871		$	362		$	991		Net of tax
	Cash flow hedge derivative:
			$	—		$	(1,866	)	$	—		$	(1,866	)	Net loss on interest rate swap
				—			(1,866	)		—			(1,866	)	Total before tax
				—			653			—			653		Tax benefit
			$	—		$	(1,213	)	$	—		$	(1,213	)	Net of tax
	Defined benefit pension plans:
	Amortization of net loss included in net periodic pension costs*		$	(167	)	$	(349	)	$	(331	)	$	(641	)
	Accretion of prior service cost included in net periodic pension costs*			69			63			144			127
				(98	)		(286	)		(187	)		(514	)	Total before tax
				34			101			65			180		Tax benefit
			$	(64	)	$	(185	)	$	(122	)	$	(334	)	Net of tax
	*	These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost. (See Note 7—Retirement Plans and Other Postretirement Benefits for additional details.)

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
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 June 30, 2014 and December 31, 2013:
						Derivative Assets								Derivative Liabilities
	(Dollars in thousands)	Notional				Balance Sheet				Fair				Balance Sheet				Fair
		Amount				Classification				Value				Classification				Value
	At June 30, 2014
	Interest rate locks with customers	$	25,847				Other Assets			$	769				—			$	—
	Forward loan sale commitments		26,721				—				—				Other Liabilities				188
	Total	$	52,568							$	769							$	188
	At December 31, 2013
	Interest rate locks with customers	$	15,176				Other Assets			$	321				—			$	—
	Forward loan sale commitments		17,425				Other Assets				25				—				—
	Total	$	32,601							$	346							$	—
Income for Derivatives Not Designated as Hedging Instruments	'
	For the three and six months ended June 30, 2014 and 2013, the amounts included in the consolidated statements of income for derivatives not designated as hedging instruments are shown in the table below:
		Statement of Income Classification		Three Months Ended								Six Months Ended
				June 30,								June 30,
	(Dollars in thousands)			2014				2013				2014				2013
	Interest rate locks with customers	Net gain (loss) on mortgage banking activities		$	350			$	(1,549	)		$	448			$	(1,611	)
	Forward loan sale commitments	Net (loss) gain on mortgage banking activities			(200	)			994				(213	)			826
	Total			$	150			$	(555	)		$	235			$	(785	)
Income for Derivatives Designated as Hedging Instruments	'
	For the three and six months ended June 30, 2014 and 2013, the amounts included in the consolidated statements of income for derivatives designated as hedging instruments are shown in the table below:
		Statement of Income		Three Months Ended								Six Months Ended
		Classification		June 30,								June 30,
	(Dollars in thousands)			2014				2013				2014				2013
	Interest rate swap—cash flow hedge—loss on termination	Net loss on termination of interest rate swap		$	—			$	(1,866	)		$	—			$	(1,866	)
	Interest rate swap—cash flow hedge—interest payments	Interest expense			—				9				—				124
	Interest rate swap—cash flow hedge—ineffectiveness	Interest expense			—				—				—				—
	Net loss			$	—			$	(1,875	)		$	—			$	(1,990	)

Fair_Value_Disclosures_Tables

Fair Value Disclosures (Tables)	6 Months Ended
	Jun. 30, 2014
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 June 30, 2014 and December 31, 2013, classified using the fair value hierarchy:
		At June 30, 2014
	(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/
									Liabilities at
									Fair Value
	Assets:
	Available-for-sale securities:
	U.S. treasuries	$	4,808	$	—		$	—	$	4,808
	U.S. government corporations and agencies		—		122,882			—		122,882
	State and political subdivisions		—		107,364			—		107,364
	Residential mortgage-backed securities		—		12,169			—		12,169
	Collateralized mortgage obligations		—		6,703			—		6,703
	Corporate bonds		—		42,612			—		42,612
	Money market mutual funds		4,011		—			—		4,011
	Equity securities		1,307		—			—		1,307
	Total available-for-sale securities		10,126		291,730			—		301,856
	Interest rate locks with customers		—		769			—		769
	Total assets	$	10,126	$	292,499		$	—	$	302,625
	Liabilities:
	Contingent consideration liability	$	—	$	—		$	6,187	$	6,187
	Forward loan sale commitments		—		188			—		188
	Total liabilities	$	—	$	188		$	6,187	$	6,375
		At December 31, 2013
	(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/
									Liabilities at
									Fair Value
	Assets:
	Available-for-sale securities:
	U.S. treasuries	$	4,708	$	—		$	—	$	4,708
	U.S. government corporations and agencies		—		128,148			—		128,148
	State and political subdivisions		—		107,657			—		107,657
	Residential mortgage-backed securities		—		35,480			—		35,480
	Collateralized mortgage obligations		—		7,201			—		7,201
	Corporate bonds		—		33,840			—		33,840
	Money market mutual funds		16,900		—			—		16,900
	Equity securities		2,347		—			—		2,347
	Total available-for-sale securities		23,955		312,326			—		336,281
	Interest rate locks with customers		—		321			—		321
	Forward loan sale commitments		—		25			—		25
	Total assets	$	23,955	$	312,672		$	—	$	336,627
	Liabilities:
	Contingent consideration liability	$	—	$	—		$	501	$	501
	Total liabilities	$	—	$	—		$	501	$	501
Contingent Consideration Liability Change in Amount	'
	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 six months ended June 30, 2014 and 2013:
		Six Months Ended June 30, 2014
	(Dollars in thousands)	Balance at		Contingent			Payment of		Adjustment			Balance at
		December 31,		Consideration			Contingent		of Contingent			June 30,
		2013		from New			Consideration		Consideration			2014
				Acquisition
	Girard Partners	$	—	$	5,470		$	—	$	384		$	5,854
	John T. Fretz Insurance Agency		501		—			310		142			333
	Total contingent consideration liability	$	501	$	5,470		$	310	$	526		$	6,187
		Six Months Ended June 30, 2013
	(Dollars in thousands)	Balance at		Contingent			Payment of		Adjustment			Balance at
		December 31,		Consideration			Contingent		of Contingent			June 30,
		2012		from New			Consideration		Consideration			2013
				Acquisition
	Javers Group	$	903	$	—		$	—	$	(903	)	$	—
	John T. Fretz Insurance Agency		—		454			—		11			465
	Total contingent consideration liability	$	903	$	454		$	—	$	(892	)	$	465
Assets Measured at Fair Value on Non-Recurring Basis	'
	The following table represents assets measured at fair value on a non-recurring basis at June 30, 2014 and December 31, 2013:
		At June 30, 2014
	(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/Liabilities at
									Fair Value
	Impaired loans held for investment	$	—	$	—		$	51,280	$	51,280
	Total	$	—	$	—		$	51,280	$	51,280
		At December 31, 2013
	(Dollars in thousands)	Level 1		Level 2			Level 3		Assets/Liabilities at
									Fair Value
	Impaired loans held for investment	$	—	$	—		$	55,370	$	55,370
	Total	$	—	$	—		$	55,370	$	55,370
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 June 30, 2014 and December 31, 2013. The disclosed fair values are classified using the fair value hierarchy.
		At June 30, 2014
	(Dollars in thousands)	Level 1		Level 2			Level 3		Fair			Carrying
									Value			Amount
	Assets:
	Cash and short-term interest-earning assets	$	57,607	$	—		$	—	$	57,607		$	57,607
	Held-to-maturity securities		—		57,499			—		57,499			56,604
	Loans held for sale		—		9,816			532		10,348			9,811
	Net loans and leases held for investment		—		—			1,524,160		1,524,160			1,511,620
	Mortgage servicing rights		—		—			6,989		6,989			5,378
	Other real estate owned		—		1,650			—		1,650			1,650
	Total assets	$	57,607	$	68,965		$	1,531,681	$	1,658,253		$	1,642,670
	Liabilities:
	Deposits:
	Demand and savings deposits, non-maturity	$	1,564,004	$	—		$	—	$	1,564,004		$	1,564,004
	Time deposits		—		270,978			—		270,978			268,230
	Total deposits		1,564,004		270,978			—		1,834,982			1,832,234
	Short-term borrowings		—		45,066			—		45,066			45,066
	Total liabilities	$	1,564,004	$	316,044		$	—	$	1,880,048		$	1,877,300
	Off-Balance-Sheet:
	Commitments to extend credit	$	—	$	(1,381	)	$	—	$	(1,381	)	$	—
		At December 31, 2013
	(Dollars in thousands)	Level 1		Level 2			Level 3		Fair			Carrying
									Value			Amount
	Assets:
	Cash and short-term interest-earning assets	$	69,169	$	—		$	—	$	69,169		$	69,169
	Held-to-maturity securities		—		66,853			—		66,853			66,003
	Loans held for sale		—		2,267			—		2,267			2,267
	Net loans and leases held for investment		—		—			1,477,945		1,477,945			1,461,620
	Mortgage servicing rights		—		7,188			—		7,188			5,519
	Other real estate owned		—		1,650			—		1,650			1,650
	Total assets	$	69,169	$	77,958		$	1,477,945	$	1,625,072		$	1,606,228
	Liabilities:
	Deposits:
	Demand and savings deposits, non-maturity	$	1,573,709	$	—		$	—	$	1,573,709		$	1,573,709
	Time deposits		—		268,909			—		268,909			270,789
	Total deposits		1,573,709		268,909			—		1,842,618			1,844,498
	Short-term borrowings		—		35,687			—		35,687			37,256
	Total liabilities	$	1,573,709	$	304,596		$	—	$	1,878,305		$	1,881,754
	Off-Balance-Sheet:
	Commitments to extend credit	$	—	$	(1,357	)	$	—	$	(1,357	)	$	—

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 17, 2014	Mar. 31, 2014	Jun. 30, 2014	Jan. 27, 2014
			Valley Green Bank [Member]	Valley Green Bank [Member]	Valley Green Bank [Member]	Girard Partners [Member]	Girard Partners [Member]
			Office
Business Acquisition [Line Items]	'	'	'	'	'	'	'
Business merger, Date of merger agreement	'	'	17-Jun-14	'	'	'	'
Merger agreement aggregate value	'	'	'	$76,000,000	'	'	'
Assets	2,197,252,000	2,191,559,000	'	'	370,000,000	'	'
Loan	'	'	'	'	329,000,000	'	'
Deposits	1,832,234,000	1,844,498,000	'	'	335,000,000	'	'
Number of banking office operates in greater Philadelphia marketplace	'	'	3	'	'	'	'
Number of loan production offices in Philadelphia marketplace	'	'	2	'	'	'	'
Common stock per share received under Merger Agreement	'	'	$27	'	'	'	'
Number of consecutive trading days taken for final exchange ratio	'	'	'20 days	'	'	'	'
Assets under management, Carrying amount	3,000,000,000	'	'	'	'	'	500,000,000
Acquisition completion date	'	'	'	'	'	27-Jan-14	'
Cash paid for acquisition	'	'	'	'	'	5,400,000	'
Effective date of acquisition	'	'	'	'	'	1-Jan-14	'
Fair value of contingent consideration liability	'	'	'	'	'	'	5,500,000
Original potential cash payments from contingent consideration, minimum	'	'	'	'	'	0	'
Original potential cash payments from contingent consideration, maximum	'	'	'	'	'	14,500,000	'
Potential cash payments from contingent consideration, period of measurement (in years)	'	'	'	'	'	'5 years	'
Potential cash payments from contingent consideration, end date	'	'	'	'	'	31-Dec-18	'
Goodwill related to acquisition, tax deductible	'	'	'	'	'	6,800,000	'
Customer related intangibles	'	'	'	'	'	$4,300,000	'
Customer related intangibles amortized period	'	'	'	'	'	'9 years	'

Investment_Securities_Amortize

Investment Securities - Amortized Cost and Estimated Fair Value of Held-to-Maturity Securities and Available-for-Sale Securities by Contractual Maturity (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Held-to-Maturity, Amortized Cost	$56,604	$66,003
Securities Held-to-Maturity, Fair Value	57,499	66,853
Amortized Cost, Total	299,220	338,546
Gross Unrealized Gains, Total	4,332	2,883
Gross Unrealized Losses, Total	-1,696	-5,148
Fair Value, Total	301,856	336,281
Equity Securities [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Available-for-Sale, Amortized Cost, Total	854	1,679
Securities Available-for-Sale, Amortized Cost, No stated maturity	854	1,679
Securities Available-for-Sale, Gross Unrealized Gains, No stated maturity	453	668
Securities Available-for-Sale, Gross Unrealized Losses, No stated maturity	'	'
Securities Available-for-Sale, Fair Value, No stated maturity	1,307	2,347
Gross Unrealized Gains, Total	453	668
Securities Available-for-Sale, Fair Value, Total	1,307	2,347
U.S. Treasuries [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Available-for-Sale, Amortized Cost After 5 years to 10 years	4,969	4,966
Securities Available-for-Sale, Gross Unrealized Losses After 5 years to 10 years	-161	-258
Securities Available-for-Sale, Fair Value After 5 years to 10 years	4,808	4,708
Amortized Cost, Total	4,969	4,966
Gross Unrealized Losses, Total	-161	-258
Securities Available-for-Sale, Fair Value, Total	4,808	4,708
U.S. Government Corporations and Agencies [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Available-for-Sale, Amortized Cost Within 1 year	'	5,999
Securities Available-for-Sale, Gross Unrealized Gains Within 1 year	'	16
Securities Available-for-Sale, Gross Unrealized Losses Within 1 year	'	'
Securities Available-for-Sale, Fair Value Within 1 year	'	6,015
Securities Available-for-Sale, Amortized Cost After 1 year to 5 years	112,614	112,989
Securities Available-for-Sale, Gross Unrealized Gains After 1 year to 5 years	130	114
Securities Available-for-Sale, Gross Unrealized Losses After 1 year to 5 years	-413	-1,226
Securities Available-for-Sale, Fair Value After 1 year to 5 years	112,331	111,877
Securities Available-for-Sale, Amortized Cost After 5 years to 10 years	10,747	10,816
Securities Available-for-Sale, Gross Unrealized Losses After 5 years to 10 years	-196	-560
Securities Available-for-Sale, Fair Value After 5 years to 10 years	10,551	10,256
Amortized Cost, Total	123,361	129,804
Gross Unrealized Gains, Total	130	130
Gross Unrealized Losses, Total	-609	-1,786
Securities Available-for-Sale, Fair Value, Total	122,882	128,148
State and Political Subdivisions [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Available-for-Sale, Amortized Cost Within 1 year	600	1,564
Securities Available-for-Sale, Gross Unrealized Gains Within 1 year	2	13
Securities Available-for-Sale, Gross Unrealized Losses Within 1 year	'	'
Securities Available-for-Sale, Fair Value Within 1 year	602	1,577
Securities Available-for-Sale, Amortized Cost After 1 year to 5 years	9,407	5,305
Securities Available-for-Sale, Gross Unrealized Gains After 1 year to 5 years	26	14
Securities Available-for-Sale, Gross Unrealized Losses After 1 year to 5 years	-20	-29
Securities Available-for-Sale, Fair Value After 1 year to 5 years	9,413	5,290
Securities Available-for-Sale, Amortized Cost After 5 years to 10 years	46,951	41,974
Securities Available-for-Sale, Gross Unrealized Gains After 5 years to 10 years	1,458	710
Securities Available-for-Sale, Gross Unrealized Losses After 5 years to 10 years	-150	-698
Securities Available-for-Sale, Fair Value After 5 years to 10 years	48,259	41,986
Securities Available-for-Sale, Amortized Cost Over 10 years	47,081	57,899
Securities Available-for-Sale, Gross Unrealized Gains Over 10 years	2,068	1,227
Securities Available-for-Sale, Gross Unrealized Losses Over 10 years	-59	-322
Securities Available-for-Sale, Fair Value Over 10 years	49,090	58,804
Amortized Cost, Total	104,039	106,742
Gross Unrealized Gains, Total	3,554	1,964
Gross Unrealized Losses, Total	-229	-1,049
Securities Available-for-Sale, Fair Value, Total	107,364	107,657
Residential Mortgage-Backed Securities [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Available-for-Sale, Amortized Cost After 5 years to 10 years	9,977	10,008
Securities Available-for-Sale, Gross Unrealized Gains After 5 years to 10 years	'	5
Securities Available-for-Sale, Gross Unrealized Losses After 5 years to 10 years	-143	-53
Securities Available-for-Sale, Fair Value After 5 years to 10 years	9,834	9,960
Securities Available-for-Sale, Amortized Cost Over 10 years	2,280	25,721
Securities Available-for-Sale, Gross Unrealized Gains Over 10 years	55	20
Securities Available-for-Sale, Gross Unrealized Losses Over 10 years	'	-221
Securities Available-for-Sale, Fair Value Over 10 years	2,335	25,520
Amortized Cost, Total	12,257	35,729
Gross Unrealized Gains, Total	55	25
Gross Unrealized Losses, Total	-143	-274
Securities Available-for-Sale, Fair Value, Total	12,169	35,480
Collateralized Mortgage Obligations [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Available-for-Sale, Amortized Cost After 1 year to 5 years	8	73
Securities Available-for-Sale, Fair Value After 1 year to 5 years	8	73
Securities Available-for-Sale, Amortized Cost Over 10 years	6,851	7,341
Securities Available-for-Sale, Gross Unrealized Gains Over 10 years	41	40
Securities Available-for-Sale, Gross Unrealized Losses Over 10 years	-197	-253
Securities Available-for-Sale, Fair Value Over 10 years	6,695	7,128
Amortized Cost, Total	6,859	7,414
Gross Unrealized Gains, Total	41	40
Gross Unrealized Losses, Total	-197	-253
Securities Available-for-Sale, Fair Value, Total	6,703	7,201
Corporate Bonds [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Held-to-Maturity, Amortized Cost Within 1 year	13,160	11,148
Securities Held-to-Maturity, Gross Unrealized Gains Within 1 year	240	122
Securities Held-to-Maturity, Fair Value Within 1 year	13,400	11,270
Securities Held-to-Maturity, Amortized Cost After 1 year to 5 years	43,444	54,855
Securities Held-to-Maturity, Gross Unrealized Gains After 1 year to 5 years	680	992
Securities Held-to-Maturity, Gross Unrealized Losses After 1 year to 5 years	-25	-264
Securities Held-to-Maturity, Fair Value After 1 year to 5 years	44,099	55,583
Securities Held-to-Maturity, Amortized Cost	56,604	66,003
Securities Held-to-Maturity, Gross Unrealized Gains	920	1,114
Securities Held-to-Maturity, Gross Unrealized Losses	-25	-264
Securities Held-to-Maturity, Fair Value	57,499	66,853
Securities Available-for-Sale, Amortized Cost After 1 year to 5 years	21,920	18,838
Securities Available-for-Sale, Gross Unrealized Gains After 1 year to 5 years	92	52
Securities Available-for-Sale, Gross Unrealized Losses After 1 year to 5 years	-137	-411
Securities Available-for-Sale, Fair Value After 1 year to 5 years	21,875	18,479
Securities Available-for-Sale, Amortized Cost After 5 years to 10 years	20,950	16,474
Securities Available-for-Sale, Gross Unrealized Gains After 5 years to 10 years	7	4
Securities Available-for-Sale, Gross Unrealized Losses After 5 years to 10 years	-220	-1,117
Securities Available-for-Sale, Fair Value After 5 years to 10 years	20,737	15,361
Amortized Cost, Total	42,870	35,312
Gross Unrealized Gains, Total	99	56
Gross Unrealized Losses, Total	-357	-1,528
Securities Available-for-Sale, Fair Value, Total	42,612	33,840
Money Market Mutual Funds [Member]	'	'
Schedule of Available for Sale and Held To Maturity Securities [Line Items]	'	'
Securities Available-for-Sale, Amortized Cost, No stated maturity	4,011	16,900
Securities Available-for-Sale, Gross Unrealized Losses, No stated maturity	'	'
Securities Available-for-Sale, Fair Value, No stated maturity	4,011	16,900
Amortized Cost, Total	4,011	16,900
Securities Available-for-Sale, Fair Value, Total	$4,011	$16,900

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified	Investment	Investment
Investments Debt And Equity Securities [Abstract]	'	'
Carrying value of securities pledged to secure public deposits and for other purposes as required by law	$232.50	$271.10
Number of investments in non-federal issuer representing more than 10% of shareholders' equity	0	0
Maximum investment in any single non-federal issuer representing shareholders' equity	10.00%	10.00%

Investment_Securities_Informat

Investment Securities - Information Related to Sales of Securities Available-for-Sale (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Securities available-for-sale:	'	'
Proceeds from sales	$30,286	$35,415
Gross realized gains on sales	557	1,524
Gross realized losses on sales	'	'
Tax expense related to net realized gains on sales	$195	$533

Investment_Securities_Amount_o

Investment Securities - Amount of Securities in Unrealized Loss Position (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than Twelve Months, Fair Value	$19,894	$216,788
Less than Twelve Months, Unrealized Losses	-180	-5,412
Twelve Months or Longer, Fair Value	130,856	'
Twelve Months or Longer, Unrealized Losses	-1,541	'
Total, Fair Value	150,750	216,788
Total Unrealized Losses	-1,721	-5,412
U.S. Treasuries [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than Twelve Months, Fair Value	'	4,708
Less than Twelve Months, Unrealized Losses	'	-258
Twelve Months or Longer, Fair Value	4,808	'
Twelve Months or Longer, Unrealized Losses	-161	'
Total, Fair Value	4,808	4,708
Total Unrealized Losses	-161	-258
U.S. Government Corporations and Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than Twelve Months, Fair Value	'	101,813
Less than Twelve Months, Unrealized Losses	'	-1,786
Twelve Months or Longer, Fair Value	77,693	'
Twelve Months or Longer, Unrealized Losses	-609	'
Total, Fair Value	77,693	101,813
Total Unrealized Losses	-609	-1,786
State and Political Subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than Twelve Months, Fair Value	4,177	30,233
Less than Twelve Months, Unrealized Losses	-8	-1,049
Twelve Months or Longer, Fair Value	13,274	'
Twelve Months or Longer, Unrealized Losses	-221	'
Total, Fair Value	17,451	30,233
Total Unrealized Losses	-229	-1,049
Residential Mortgage-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than Twelve Months, Fair Value	4,731	29,444
Less than Twelve Months, Unrealized Losses	-133	-274
Twelve Months or Longer, Fair Value	5,103	'
Twelve Months or Longer, Unrealized Losses	-10	'
Total, Fair Value	9,834	29,444
Total Unrealized Losses	-143	-274
Collateralized Mortgage Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than Twelve Months, Fair Value	'	4,091
Less than Twelve Months, Unrealized Losses	'	-253
Twelve Months or Longer, Fair Value	3,891	'
Twelve Months or Longer, Unrealized Losses	-197	'
Total, Fair Value	3,891	4,091
Total Unrealized Losses	-197	-253
Corporate Bonds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than Twelve Months, Fair Value	10,986	46,499
Less than Twelve Months, Unrealized Losses	-39	-1,792
Twelve Months or Longer, Fair Value	26,087	'
Twelve Months or Longer, Unrealized Losses	-343	'
Total, Fair Value	37,073	46,499
Total Unrealized Losses	($382)	($1,792)

Loans_and_Leases_Summary_of_Ma

Loans and Leases - Summary of Major Loan and Lease Categories (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	$1,586,994	$1,541,484	$1,499,993
Unearned lease income, included in the above table	-13,742	-14,439	'
Net deferred costs, included in the above table	2,832	2,744	'
Overdraft deposits, included in the above table	68	62	'
Commercial, Financial and Agricultural [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	447,993	422,816	'
Real Estate-Commercial [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	626,060	600,353	'
Real Estate-Construction [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	76,735	90,493	'
Real Estate-Residential Secured for Business Purpose [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	35,284	37,319	32,329
Real Estate-Residential Secured for Personal Purpose [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	162,352	149,164	'
Real Estate-Home Equity Secured for Personal Purpose [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	98,880	95,345	'
Loans to Individuals [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	31,564	40,000	43,598
Lease Financings [Member]	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'
Total loans and leases held for investment, net of deferred income	$108,126	$105,994	$91,621

Loans_and_Leases_Age_Analysis_

Loans and Leases - Age Analysis of Past Due Loans and Leases (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	$4,041	$4,896	'
60-89 Days Past Due	1,207	2,205	'
90 Days or more Past Due	10,749	18,164	'
Total Past Due	15,997	25,265	'
Current	1,570,997	1,516,219	'
Total ending balance	1,586,994	1,541,484	1,499,993
Recorded Investment 90 Days or more Past Due and Accruing Interest	524	413	'
Commercial, Financial and Agricultural [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	377	386	'
60-89 Days Past Due	391	922	'
90 Days or more Past Due	787	2,904	'
Total Past Due	1,555	4,212	'
Current	446,438	418,604	'
Total ending balance	447,993	422,816	439,907
Recorded Investment 90 Days or more Past Due and Accruing Interest	'	12	'
Real Estate-Commercial [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	1,363	148	'
60-89 Days Past Due	'	262	'
90 Days or more Past Due	923	4,932	'
Total Past Due	2,286	5,342	'
Current	623,774	595,011	'
Total ending balance	626,060	600,353	'
Real Estate-Construction [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
90 Days or more Past Due	7,185	8,742	'
Total Past Due	7,185	8,742	'
Current	69,550	81,751	'
Total ending balance	76,735	90,493	'
Real Estate-Residential Secured for Business Purpose [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	19	87	'
60-89 Days Past Due	59	276	'
90 Days or more Past Due	654	161	'
Total Past Due	732	524	'
Current	34,552	36,795	'
Total ending balance	35,284	37,319	32,329
Real Estate-Residential Secured for Personal Purpose [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	492	1,370	'
60-89 Days Past Due	44	'	'
90 Days or more Past Due	256	617	'
Total Past Due	792	1,987	'
Current	161,560	147,177	'
Total ending balance	162,352	149,164	'
Real Estate-Home Equity Secured for Personal Purpose [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	101	278	'
60-89 Days Past Due	10	97	'
90 Days or more Past Due	104	100	'
Total Past Due	215	475	'
Current	98,665	94,870	'
Total ending balance	98,880	95,345	'
Recorded Investment 90 Days or more Past Due and Accruing Interest	'	23	'
Loans to Individuals [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	414	445	'
60-89 Days Past Due	216	193	'
90 Days or more Past Due	216	319	'
Total Past Due	846	957	'
Current	30,718	39,043	'
Total ending balance	31,564	40,000	43,598
Recorded Investment 90 Days or more Past Due and Accruing Interest	216	319	'
Lease Financings [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
30-59 Days Past Due	1,275	2,182	'
60-89 Days Past Due	487	455	'
90 Days or more Past Due	624	389	'
Total Past Due	2,386	3,026	'
Current	105,740	102,968	'
Total ending balance	108,126	105,994	91,621
Recorded Investment 90 Days or more Past Due and Accruing Interest	$308	$59	'

Loans_and_Leases_NonPerforming

Loans and Leases - Non-Performing Loans and Leases (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	$17,742	$23,235
Accruing Troubled Debt Restructured Loans and Lease Modifications	6,340	7,943
Loans and Leases 90 Days or more Past Due and Accruing Interest	524	413
Total Non-Performing Loans and Leases	24,606	31,591
Loans Held For Sale [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	532	'
Total Non-Performing Loans and Leases	532	'
Commercial, Financial and Agricultural [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	3,182	4,253
Accruing Troubled Debt Restructured Loans and Lease Modifications	1,238	1,329
Loans and Leases 90 Days or more Past Due and Accruing Interest	'	12
Total Non-Performing Loans and Leases	4,420	5,594
Real Estate-Commercial [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	3,901	8,091
Accruing Troubled Debt Restructured Loans and Lease Modifications	2,623	4,271
Total Non-Performing Loans and Leases	6,524	12,362
Real Estate-Construction [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	7,996	9,159
Accruing Troubled Debt Restructured Loans and Lease Modifications	2,479	2,307
Total Non-Performing Loans and Leases	10,475	11,466
Real Estate-Residential Secured for Business Purpose [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	927	224
Total Non-Performing Loans and Leases	927	224
Real Estate-Residential Secured for Personal Purpose [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	783	1,101
Total Non-Performing Loans and Leases	783	1,101
Real Estate-Home Equity Secured for Personal Purpose [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	104	77
Loans and Leases 90 Days or more Past Due and Accruing Interest	'	23
Total Non-Performing Loans and Leases	104	100
Loans to Individuals [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	1	'
Accruing Troubled Debt Restructured Loans and Lease Modifications	'	36
Loans and Leases 90 Days or more Past Due and Accruing Interest	216	319
Total Non-Performing Loans and Leases	217	355
Lease Financings [Member]	'	'
Non-Performing Loans and Leases [Line Items]	'	'
Nonaccrual Loans and Leases	316	330
Loans and Leases 90 Days or more Past Due and Accruing Interest	308	59
Total Non-Performing Loans and Leases	$624	$389

Loans_and_Leases_NonPerforming1

Loans and Leases - Non-Performing Loans and Leases (Parenthetical) (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Receivables [Abstract]	'	'
Nonaccrual troubled debt restructured loans and lease modifications	$2,200,000	$1,600,000
Real estate construction loan	$532,000	'

Loans_and_Leases_Additional_In

Loans and Leases - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]	'	'
Measure taken to reduce the risk of difference in actual value and residual value of the leased assets at maturity	'The Corporation greatly reduces this risk primarily by using $1.00 buyout leases, in which the entire cost of the leased equipment is included in the contractual payments, leaving no residual payment at the end of the lease terms.	'
Other accruing impaired loans	$29,200,000	$27,500,000
Specific reserves for other accruing impaired loans	674,000	1,600,000
Maximum modification period on short-term basis	'Up to one year	'
Restructured loan past due period	'Less than ninety days past due	'
Minimum [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Amount of loan relationship with risk ratings of grade 1-5 reviewed annually	500,000	'
Amount of loan relationship with risk ratings of grade 1-5 reviewed quarterly	2,500,000	'
Amount of loan relationship with risk ratings of grade six reviewed annually	500,000	'
Amount of loan relationship with risk ratings of grade six reviewed quarterly	2,000,000	'
Aging period due of reviewing loans rated 1 through 6	'60 days	'
Loan-to-value ratio for residential mortgage loans with private mortgage insurance	80.00%	'
Maximum [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Amount of loan relationship with risk ratings of grade 1-5 reviewed annually	2,500,000	'
Amount of loan relationship due for review after 60 or more past due days	500,000	'
Amount of loan relationship with risk ratings of grade six reviewed annually	$2,000,000	'
Loan-to-value ratio for residential mortgage loans without private mortgage insurance	80.00%	'
Combined loan-to-value ratio for home equity loans without private mortgage insurance	80.00%	'
Combined loan-to-value ratio for home equity loans without private mortgage insurance for corporations strongest profile borrower	85.00%	'

Loans_and_Leases_Credit_Qualit

Loans and Leases - Credit Quality Indicators (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	$1,586,994	$1,541,484	$1,499,993
Grade: 1. Cash secured/ 2. Fully secured [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	9,880	8,459	'
Grade: 3. Strong [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	20,663	18,866	'
Grade: 4. Satisfactory [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	54,166	54,169	'
Grade: 5. Acceptable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	762,988	716,422	'
Grade: 6. Pre-watch [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	191,886	219,350	'
Grade: 7. Special Mention [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	29,892	31,381	'
Grade: 8. Substandard [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	116,597	101,941	'
Grade: 9. Doubtful [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	'	393	'
Internally Assigned Grades [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	1,186,072	1,150,981	'
Performing Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	399,194	388,558	'
Nonperforming Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	1,728	1,945	'
Performing and Nonperforming [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	400,922	390,503	'
Commercial, Financial and Agricultural [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	447,993	422,816	439,907
Commercial, Financial and Agricultural [Member] | Grade: 1. Cash secured/ 2. Fully secured [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	4,533	4,763	'
Commercial, Financial and Agricultural [Member] | Grade: 3. Strong [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	7,574	6,051	'
Commercial, Financial and Agricultural [Member] | Grade: 4. Satisfactory [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	28,620	34,650	'
Commercial, Financial and Agricultural [Member] | Grade: 5. Acceptable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	276,339	251,203	'
Commercial, Financial and Agricultural [Member] | Grade: 6. Pre-watch [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	66,948	84,201	'
Commercial, Financial and Agricultural [Member] | Grade: 7. Special Mention [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	13,439	10,095	'
Commercial, Financial and Agricultural [Member] | Grade: 8. Substandard [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	50,540	31,508	'
Commercial, Financial and Agricultural [Member] | Grade: 9. Doubtful [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	'	345	'
Commercial, Financial and Agricultural [Member] | Internally Assigned Grades [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	447,993	422,816	'
Real Estate-Commercial [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	626,060	600,353	'
Real Estate-Commercial [Member] | Grade: 1. Cash secured/ 2. Fully secured [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	1,858	2,014	'
Real Estate-Commercial [Member] | Grade: 3. Strong [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	9,135	8,515	'
Real Estate-Commercial [Member] | Grade: 4. Satisfactory [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	16,610	17,758	'
Real Estate-Commercial [Member] | Grade: 5. Acceptable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	417,051	384,061	'
Real Estate-Commercial [Member] | Grade: 6. Pre-watch [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	115,956	113,181	'
Real Estate-Commercial [Member] | Grade: 7. Special Mention [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	12,660	19,445	'
Real Estate-Commercial [Member] | Grade: 8. Substandard [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	52,790	55,331	'
Real Estate-Commercial [Member] | Grade: 9. Doubtful [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	'	48	'
Real Estate-Commercial [Member] | Internally Assigned Grades [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	626,060	600,353	'
Real Estate-Construction [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	76,735	90,493	'
Real Estate-Construction [Member] | Grade: 1. Cash secured/ 2. Fully secured [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	3,489	1,682	'
Real Estate-Construction [Member] | Grade: 3. Strong [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	3,954	4,300	'
Real Estate-Construction [Member] | Grade: 4. Satisfactory [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	8,689	1,500	'
Real Estate-Construction [Member] | Grade: 5. Acceptable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	44,643	54,464	'
Real Estate-Construction [Member] | Grade: 6. Pre-watch [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	4,307	16,084	'
Real Estate-Construction [Member] | Grade: 7. Special Mention [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	2,053	'	'
Real Estate-Construction [Member] | Grade: 8. Substandard [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	9,600	12,463	'
Real Estate-Construction [Member] | Internally Assigned Grades [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	76,735	90,493	'
Real Estate-Residential Secured for Business Purpose [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	35,284	37,319	32,329
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 4. Satisfactory [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	247	261	'
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 5. Acceptable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	24,955	26,694	'
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 6. Pre-watch [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	4,675	5,884	'
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 7. Special Mention [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	1,740	1,841	'
Real Estate-Residential Secured for Business Purpose [Member] | Grade: 8. Substandard [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	3,667	2,639	'
Real Estate-Residential Secured for Business Purpose [Member] | Internally Assigned Grades [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	35,284	37,319	'
Real Estate-Residential Secured for Personal Purpose [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	162,352	149,164	'
Real Estate-Residential Secured for Personal Purpose [Member] | Performing Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	161,569	148,063	'
Real Estate-Residential Secured for Personal Purpose [Member] | Nonperforming Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	783	1,101	'
Real Estate-Residential Secured for Personal Purpose [Member] | Performing and Nonperforming [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	162,352	149,164	'
Real Estate-Home Equity Secured for Personal Purpose [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	98,880	95,345	'
Real Estate-Home Equity Secured for Personal Purpose [Member] | Performing Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	98,776	95,245	'
Real Estate-Home Equity Secured for Personal Purpose [Member] | Nonperforming Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	104	100	'
Real Estate-Home Equity Secured for Personal Purpose [Member] | Performing and Nonperforming [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	98,880	95,345	'
Loans to Individuals [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	31,564	40,000	43,598
Loans to Individuals [Member] | Performing Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	31,347	39,645	'
Loans to Individuals [Member] | Nonperforming Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	217	355	'
Loans to Individuals [Member] | Performing and Nonperforming [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	31,564	40,000	'
Lease Financings [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	108,126	105,994	91,621
Lease Financings [Member] | Performing Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	107,502	105,605	'
Lease Financings [Member] | Nonperforming Financing Receivable [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	624	389	'
Lease Financings [Member] | Performing and Nonperforming [Member]	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'
Loans and leases held for investment	$108,126	$105,994	'

Loans_and_Leases_Reserve_for_L

Loans and Leases - Reserve for Loan and Lease Losses Roll Forward (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	$24,567	$25,222	$24,494	$24,746
Charge-offs	-2,019	-4,319	-3,981	-6,165
Recoveries	295	369	855	617
Provision (recovery of provision)	1,251	3,446	2,726	5,520
Ending balance	24,094	24,718	24,094	24,718
Commercial, Financial and Agricultural [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	9,547	11,883	9,789	11,594
Charge-offs	-250	-90	-1,689	-1,161
Recoveries	63	39	109	87
Provision (recovery of provision)	354	-437	1,505	875
Ending balance	9,714	11,395	9,714	11,395
Real Estate-Commercial and Construction [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	9,247	8,032	8,780	7,507
Charge-offs	-1,251	-3,691	-1,308	-4,073
Recoveries	'	42	370	48
Provision (recovery of provision)	1,267	4,279	1,421	5,180
Ending balance	9,263	8,662	9,263	8,662
Real Estate-Residential Secured for Business Purpose [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	1,056	570	1,062	639
Charge-offs	-98	-24	-114	-74
Recoveries	45	'	48	8
Provision (recovery of provision)	22	40	29	13
Ending balance	1,025	586	1,025	586
Real Estate-Residential and Home Equity Secured for Personal Purpose [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	1,221	792	1,284	980
Charge-offs	-10	-23	-90	-27
Recoveries	26	1	27	3
Provision (recovery of provision)	11	314	27	128
Ending balance	1,248	1,084	1,248	1,084
Loans to Individuals [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	598	628	694	679
Charge-offs	-267	-224	-490	-404
Recoveries	81	78	159	112
Provision (recovery of provision)	-7	211	42	306
Ending balance	405	693	405	693
Lease Financings [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	1,295	1,358	1,285	1,326
Charge-offs	-143	-267	-290	-426
Recoveries	80	209	142	359
Provision (recovery of provision)	-131	-88	-36	-47
Ending balance	1,101	1,212	1,101	1,212
Unallocated [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Beginning balance	1,603	1,959	1,600	2,021
Charge-offs	'	'	'	'
Recoveries	'	'	'	'
Provision (recovery of provision)	-265	-873	-262	-935
Ending balance	$1,338	$1,086	$1,338	$1,086

Loans_and_Leases_Reserve_for_L1

Loans and Leases - Reserve for Loan and Lease Losses and Recorded Investment in Loans and Leases (Detail) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	$1,144	'	'	$230	'	'
Ending balance: collectively evaluated for impairment	22,950	'	'	24,488	'	'
Total ending balance	24,094	24,567	24,494	24,718	25,222	24,746
Loans and leases held for investment:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	52,424	'	'	38,554	'	'
Ending balance: collectively evaluated for impairment	1,534,570	'	'	1,461,439	'	'
Total ending balance	1,586,994	'	1,541,484	1,499,993	'	'
Commercial, Financial and Agricultural [Member]	'	'	'	'	'	'
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	680	'	'	230	'	'
Ending balance: collectively evaluated for impairment	9,034	'	'	11,165	'	'
Total ending balance	9,714	9,547	9,789	11,395	11,883	11,594
Loans and leases held for investment:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	14,800	'	'	3,146	'	'
Ending balance: collectively evaluated for impairment	433,193	'	'	436,761	'	'
Total ending balance	447,993	'	422,816	439,907	'	'
Real Estate-Commercial and Construction [Member]	'	'	'	'	'	'
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	8	'	'	'	'	'
Ending balance: collectively evaluated for impairment	9,255	'	'	8,662	'	'
Total ending balance	9,263	9,247	8,780	8,662	8,032	7,507
Loans and leases held for investment:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	34,259	'	'	34,471	'	'
Ending balance: collectively evaluated for impairment	668,536	'	'	629,956	'	'
Total ending balance	702,795	'	'	664,427	'	'
Real Estate-Residential Secured for Business Purpose [Member]	'	'	'	'	'	'
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	456	'	'	'	'	'
Ending balance: collectively evaluated for impairment	569	'	'	586	'	'
Total ending balance	1,025	1,056	1,062	586	570	639
Loans and leases held for investment:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	2,477	'	'	169	'	'
Ending balance: collectively evaluated for impairment	32,807	'	'	32,160	'	'
Total ending balance	35,284	'	37,319	32,329	'	'
Real Estate-Residential and Home Equity Secured for Personal Purpose [Member]	'	'	'	'	'	'
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: collectively evaluated for impairment	1,248	'	'	1,084	'	'
Total ending balance	1,248	1,221	1,284	1,084	792	980
Loans and leases held for investment:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	887	'	'	730	'	'
Ending balance: collectively evaluated for impairment	260,345	'	'	227,381	'	'
Total ending balance	261,232	'	'	228,111	'	'
Loans to Individuals [Member]	'	'	'	'	'	'
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: collectively evaluated for impairment	405	'	'	693	'	'
Total ending balance	405	598	694	693	628	679
Loans and leases held for investment:	'	'	'	'	'	'
Ending balance: individually evaluated for impairment	1	'	'	38	'	'
Ending balance: collectively evaluated for impairment	31,563	'	'	43,560	'	'
Total ending balance	31,564	'	40,000	43,598	'	'
Lease Financings [Member]	'	'	'	'	'	'
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: collectively evaluated for impairment	1,101	'	'	1,212	'	'
Total ending balance	1,101	1,295	1,285	1,212	1,358	1,326
Loans and leases held for investment:	'	'	'	'	'	'
Ending balance: collectively evaluated for impairment	108,126	'	'	91,621	'	'
Total ending balance	108,126	'	105,994	91,621	'	'
Unallocated [Member]	'	'	'	'	'	'
Reserve for loan and lease losses:	'	'	'	'	'	'
Ending balance: collectively evaluated for impairment	1,338	'	'	1,086	'	'
Total ending balance	$1,338	$1,603	$1,600	$1,086	$1,959	$2,021

Loans_and_Leases_Impaired_Loan

Loans and Leases - Impaired Loans (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	$48,256	$52,598
Impaired loans with an allowance recorded, Recorded Investment	4,700	5,735
Impaired loans with no related allowance, Unpaid Principal Balance	53,900	62,486
Impaired loans with an allowance recorded, Unpaid Principal Balance	4,700	5,798
Total impaired loans, Recorded Investment	52,956	58,333
Total impaired loans, Unpaid Principal Balance	58,600	68,284
Total impaired loans, Related Allowance	1,144	2,963
Loans Held For Sale [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	532	'
Impaired loans with no related allowance, Unpaid Principal Balance	2,987	'
Total impaired loans, Recorded Investment	532	'
Total impaired loans, Unpaid Principal Balance	2,987	'
Commercial, Financial and Agricultural [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	13,121	10,890
Impaired loans with an allowance recorded, Recorded Investment	1,679	3,215
Impaired loans with no related allowance, Unpaid Principal Balance	13,865	11,749
Impaired loans with an allowance recorded, Unpaid Principal Balance	1,679	3,272
Total impaired loans, Recorded Investment	14,800	14,105
Total impaired loans, Unpaid Principal Balance	15,544	15,021
Total impaired loans, Related Allowance	680	2,398
Real Estate-Commercial [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	21,522	28,883
Impaired loans with an allowance recorded, Recorded Investment	1,445	'
Impaired loans with no related allowance, Unpaid Principal Balance	23,587	35,700
Impaired loans with an allowance recorded, Unpaid Principal Balance	1,445	'
Total impaired loans, Recorded Investment	22,967	28,883
Total impaired loans, Unpaid Principal Balance	25,032	35,700
Total impaired loans, Related Allowance	8	'
Real Estate-Construction [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	11,292	12,357
Impaired loans with no related allowance, Unpaid Principal Balance	11,639	14,540
Total impaired loans, Recorded Investment	11,292	12,357
Total impaired loans, Unpaid Principal Balance	11,639	14,540
Real Estate-Residential Secured for Business Purpose [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	901	224
Impaired loans with an allowance recorded, Recorded Investment	1,576	1,550
Impaired loans with no related allowance, Unpaid Principal Balance	914	235
Impaired loans with an allowance recorded, Unpaid Principal Balance	1,576	1,550
Total impaired loans, Recorded Investment	2,477	1,774
Total impaired loans, Unpaid Principal Balance	2,490	1,785
Total impaired loans, Related Allowance	456	501
Real Estate-Residential Secured for Personal Purpose [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	783	131
Impaired loans with an allowance recorded, Recorded Investment	'	970
Impaired loans with no related allowance, Unpaid Principal Balance	803	131
Impaired loans with an allowance recorded, Unpaid Principal Balance	'	976
Total impaired loans, Recorded Investment	783	1,101
Total impaired loans, Unpaid Principal Balance	803	1,107
Total impaired loans, Related Allowance	'	64
Real Estate-Home Equity Secured for Personal Purpose [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	104	77
Impaired loans with no related allowance, Unpaid Principal Balance	104	77
Total impaired loans, Recorded Investment	104	77
Total impaired loans, Unpaid Principal Balance	104	77
Loans to Individuals [Member]	'	'
Financing Receivable, Impaired [Line Items]	'	'
Impaired loans with no related allowance, Recorded Investment	1	36
Impaired loans with no related allowance, Unpaid Principal Balance	1	54
Total impaired loans, Recorded Investment	1	36
Total impaired loans, Unpaid Principal Balance	$1	$54

Loans_and_Leases_Average_Recor

Loans and Leases - Average Recorded Investment in Impaired Loans and Leases and Analysis of Interest on Impaired Loans (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	$52,747	$40,542	$54,340	$42,217
Interest Income Recognized	435	184	902	376
Additional Interest Income That Would Have Been Recognized Under Original Terms	280	413	598	876
Commercial, Financial and Agricultural [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	13,296	2,469	13,794	2,731
Interest Income Recognized	124	8	251	16
Additional Interest Income That Would Have Been Recognized Under Original Terms	51	23	116	62
Real Estate-Commercial [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	23,666	21,434	24,884	22,732
Interest Income Recognized	253	147	535	302
Additional Interest Income That Would Have Been Recognized Under Original Terms	72	191	166	416
Real Estate-Construction [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	12,357	15,675	12,412	15,758
Interest Income Recognized	41	28	83	56
Additional Interest Income That Would Have Been Recognized Under Original Terms	123	185	247	369
Real Estate-Residential Secured for Business Purpose [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	2,574	169	2,272	178
Interest Income Recognized	17	'	33	'
Additional Interest Income That Would Have Been Recognized Under Original Terms	15	2	35	5
Real Estate-Residential Secured for Personal Purpose [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	762	751	888	773
Additional Interest Income That Would Have Been Recognized Under Original Terms	18	12	32	24
Real Estate-Home Equity Secured for Personal Purpose [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	90	6	84	3
Additional Interest Income That Would Have Been Recognized Under Original Terms	1	'	2	'
Loans to Individuals [Member]	'	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'	'
Average Recorded Investment	2	38	6	42
Interest Income Recognized	'	$1	'	$2

Loans_and_Leases_Average_Recor1

Loans and Leases - Average Recorded Investment in Impaired Loans and Leases and Analysis of Interest on Impaired Loans (Parenthetical) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Receivables [Abstract]	'	'	'	'
Interest income recognized on a cash basis for nonaccrual loans	$0	$0	$23	$6
Interest income recognized on accrual method for accruing impaired loans	$435	$184	$879	$370

Loans_and_Leases_Troubled_Debt

Loans and Leases - Troubled Debt Restructured Loans (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
		Loans		Loans
Accruing Troubled Debt Restructured Loans [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	'	1	'	1
Pre-Restructuring Outstanding Recorded Investment	'	$1,000	'	$1,000
Post-Restructuring Outstanding Recorded Investment	'	1,000	'	1,000
Related Allowance	'	'	'	'
Nonaccrual Troubled Debt Restructured Loans [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	'	'	3	'
Pre-Restructuring Outstanding Recorded Investment	'	'	738	'
Post-Restructuring Outstanding Recorded Investment	'	'	738	'
Related Allowance	'	'	'	'
Commercial, Financial and Agricultural [Member] | Accruing Troubled Debt Restructured Loans [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	'	1	'	1
Pre-Restructuring Outstanding Recorded Investment	'	1,000	'	1,000
Post-Restructuring Outstanding Recorded Investment	'	1,000	'	1,000
Related Allowance	'	'	'	'
Real Estate-Commercial [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	'	'	1	'
Pre-Restructuring Outstanding Recorded Investment	'	'	50	'
Post-Restructuring Outstanding Recorded Investment	'	'	50	'
Related Allowance	'	'	'	'
Real Estate-Residential Secured for Business Purpose [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	'	'	2	'
Pre-Restructuring Outstanding Recorded Investment	'	'	688	'
Post-Restructuring Outstanding Recorded Investment	'	'	688	'
Related Allowance	'	'	'	'

Loans_and_Leases_Concessions_G

Loans and Leases - Concessions Granted on Accruing and Nonaccrual Loans Restructured (Detail) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Accruing Troubled Debt Restructured Loans [Member]

Accruing Troubled Debt Restructured Loans [Member]

Accruing Troubled Debt Restructured Loans [Member]

Accruing Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Commercial, Financial and Agricultural [Member]

Commercial, Financial and Agricultural [Member]

Commercial, Financial and Agricultural [Member]

Commercial, Financial and Agricultural [Member]

Real Estate-Commercial [Member]

Real Estate-Commercial [Member]

Real Estate-Residential Secured for Business Purpose [Member]

Real Estate-Residential Secured for Business Purpose [Member]

Real Estate-Residential Secured for Business Purpose [Member]

Loans

Loans

Interest Only Term Extension [Member]

Interest Only Term Extension [Member]

Loans

Interest Rate Reduction [Member]

Maturity Date Extension [Member]

Accruing Troubled Debt Restructured Loans [Member]

Accruing Troubled Debt Restructured Loans [Member]

Accruing Troubled Debt Restructured Loans [Member]

Accruing Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Nonaccrual Troubled Debt Restructured Loans [Member]

Loans

Loans

Loans

Loans

Loans

Loans

Interest Only Term Extension [Member]

Interest Only Term Extension [Member]

Loans

Interest Rate Reduction [Member]

Loans

Interest Rate Reduction [Member]

Maturity Date Extension [Member]

Loans

Loans

Loans

Loans

Loans

Concessions granted on accruing and non-accrual loans restructured

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

No. of Loans

1

1

1

1

3

2

1

1

1

1

1

1

1

2

1

1

Amount

$1,000

$1,000

$1,000

$1,000

$738

$105

$633

$1,000

$1,000

$1,000

$1,000

$50

$50

$688

$55

$633

Loans_and_Leases_Accruing_and_

Loans and Leases - Accruing and Nonaccrual Troubled Debt Restructured Loans with Payment Defaults (Detail) (Accruing Troubled Debt Restructured Loans [Member], USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013
	Loans
Accruing and nonaccrual troubled debt restructured loans with payment default	'
Number of Loans	3
Recorded Investment	$230
Commercial, Financial and Agricultural [Member]	'
Accruing and nonaccrual troubled debt restructured loans with payment default	'
Number of Loans	3
Recorded Investment	$230

Mortgage_Servicing_Rights_Addi

Mortgage Servicing Rights - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Servicing Assets at Fair Value [Line Items]	'	'
Aggregate fair value of mortgage servicing rights	7	7.2
Minimum [Member]	'	'
Servicing Assets at Fair Value [Line Items]	'	'
Range of discount rates used for valuation of mortgage servicing rights	5.00%	5.00%
Maximum [Member]	'	'
Servicing Assets at Fair Value [Line Items]	'	'
Range of discount rates used for valuation of mortgage servicing rights	10.00%	10.00%

Mortgage_Servicing_Rights_Chan

Mortgage Servicing Rights - Changes in Mortgage Servicing Rights (Detail) (Mortgage Servicing Rights [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Mortgage Servicing Rights [Member]	'	'	'	'
Servicing Asset at Amortized Cost [Line Items]	'	'	'	'
Beginning of period	$5,406	$4,723	$5,519	$4,152
Servicing rights capitalized	236	871	359	1,639
Amortization of servicing rights	-264	-381	-507	-812
Changes in valuation allowance	'	14	7	248
End of period	5,378	5,227	5,378	5,227
Mortgage loans serviced for others	$761,413	$705,999	$761,413	$705,999

Mortgage_Servicing_Rights_Acti

Mortgage Servicing Rights - Activity in Valuation Allowance for Mortgage Servicing Rights (Detail) (Mortgage Servicing Rights [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Mortgage Servicing Rights [Member]	'	'	'	'
Servicing Asset at Amortized Cost [Line Items]	'	'	'	'
Valuation allowance, beginning of period	($243)	($263)	($250)	($497)
Additions	'	'	'	'
Reductions	'	14	7	248
Direct write-downs	'	'	'	'
Valuation allowance, end of period	($243)	($249)	($243)	($249)

Mortgage_Servicing_Rights_Esti

Mortgage Servicing Rights - Estimated Amortization Expense of Mortgage Servicing Rights (Detail) (Mortgage Servicing Rights [Member], USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Mortgage Servicing Rights [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Remainder of 2014	$433
2015	792
2016	679
2017	576
2018	482
Thereafter	$2,416

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2014
			Minimum [Member]	Maximum [Member]
Income Tax Contingency [Line Items]	'	'	'	'
Open tax years	'	'	'2010	'2013
Unrecognized tax benefits	'	'	'	'
Accrued interest or penalties	'	'	'	'

Retirement_Plans_and_Other_Pos2

Retirement Plans and Other Postretirement Benefits - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]	'	'
Employee hire date no longer eligible for noncontributory retirement plan	8-Dec-09	'
Other Post Retirement Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Expected employer contributions for next fiscal year	'	$94
Defined benefit plan, contributions by employer	46	'
Defined benefit plan, benefits paid	46	'
Retirement Plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Defined Benefit Plan, non-qualified plans, estimated employer contributions for next fiscal year	'	162
Defined benefit plan, contributions by employer	66	'
Defined benefit plan, benefits paid	$1,000	'

Retirement_Plans_and_Other_Pos3

Retirement Plans and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Income) (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Other Post Retirement Benefits [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost	$18	$25	$37	$46
Interest cost	31	27	67	56
Expected return on plan assets	'	'	'	'
Amortization of net actuarial loss	2	6	5	12
Accretion of prior service cost	2	-4	-3	-9
Net periodic benefit (income) cost	53	54	106	105
Retirement Plans [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service cost	137	155	273	311
Interest cost	475	426	950	857
Expected return on plan assets	-745	-709	-1,490	-1,264
Amortization of net actuarial loss	165	343	326	629
Accretion of prior service cost	-71	-59	-141	-118
Net periodic benefit (income) cost	($39)	$156	($82)	$415

Earnings_per_Share_Basic_and_D

Earnings per Share - Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share Basic And Diluted [Abstract]	'	'	'	'
Numerator for basic and diluted earnings per share-income available to common shareholders	$5,080	$4,830	$10,806	$10,228
Denominator for basic earnings per share-weighted-average shares outstanding	16,243	16,696	16,250	16,742
Effect of dilutive securities-employee stock options and awards	86	51	86	54
Denominator for diluted earnings per share-adjusted weighted-average shares outstanding	16,329	16,747	16,336	16,796
Basic earnings per share	$0.31	$0.29	$0.67	$0.61
Diluted earnings per share	$0.31	$0.29	$0.66	$0.61
Average anti-dilutive options and awards excluded from computation of diluted earnings per share	521	668	502	661

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning balance	'	'	($9,955)	($6,920)
Net Change	1,554	-5,530	3,307	-6,309
Ending balance	-6,648	-13,229	-6,648	-13,229
Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning balance	'	'	-1,472	8,344
Net Change	'	'	3,185	-7,884
Ending balance	1,713	460	1,713	460
Net Change Related to Derivative Used for Cash Flow Hedge [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning balance	'	'	'	-1,241
Net Change	'	'	'	1,241
Ending balance	'	0	'	0
Net Change Related to Defined Benefit Pension Plan [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning balance	'	'	-8,483	-14,023
Net Change	'	'	122	334
Ending balance	($8,361)	($13,689)	($8,361)	($13,689)

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive (Loss) Income - Amounts Reclassified Out of Each Component of Accumulated Comprehensive (Loss) Income (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Amortization of net loss included in net periodic pension costs	$167	$349	$331	$641
Net unrealized holding gains (losses) on available-for-sale investment securities:	415	1,339	557	1,524
Accretion of prior service cost included in net periodic pension costs	-69	-63	-144	-127
Income before income taxes	6,627	6,367	14,358	13,475
Tax (expense) benefit	-1,547	-1,537	-3,552	-3,247
Net of tax	5,080	4,830	10,806	10,228
Amount Reclassified from Accumulated Other Comprehensive (Loss) Income [Member] | Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Net unrealized holding gains (losses) on available-for-sale investment securities:	415	1,339	557	1,524
Income before income taxes	415	1,339	557	1,524
Tax (expense) benefit	-145	-468	-195	-533
Net of tax	270	871	362	991
Amount Reclassified from Accumulated Other Comprehensive (Loss) Income [Member] | Net Change Related to Derivative Used for Cash Flow Hedge [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Net loss on interest rate swap	'	-1,866	'	-1,866
Income before income taxes	'	-1,866	'	-1,866
Tax (expense) benefit	'	653	'	653
Net of tax	'	-1,213	'	-1,213
Amount Reclassified from Accumulated Other Comprehensive (Loss) Income [Member] | Net Change Related to Defined Benefit Pension Plan [Member]	'	'	'	'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Amortization of net loss included in net periodic pension costs	-167	-349	-331	-641
Accretion of prior service cost included in net periodic pension costs	69	63	144	127
Income before income taxes	-98	-286	-187	-514
Tax (expense) benefit	34	101	65	180
Net of tax	($64)	($185)	($122)	($334)

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities - Notional Amounts and Fair Values of Derivatives Not Designated as Hedging Instruments (Detail) (Not Designated as Hedging Instrument [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]	'	'
Notional Amount	$52,568	$32,601
Derivative Assets, Fair Value	769	346
Derivative Liabilities, Fair Value	188	'
Interest Rate Locks with Customers [Member]	'	'
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]	'	'
Notional Amount	25,847	15,176
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, Fair Value	769	321
Forward Loan Sale Commitments [Member]	'	'
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]	'	'
Notional Amount	26,721	17,425
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, Fair Value	188	'
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, Fair Value	'	$25

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities - Additional Information (Detail) (Designated as Hedging Instruments [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Designated as Hedging Instruments [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivatives designated as hedging instruments	$0	$0

Derivative_Instruments_and_Hed4

Derivative Instruments and Hedging Activities - Income for Derivatives Not Designated as Hedging Instruments (Detail) (Not Designated as Hedging Instrument [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Income for derivatives not designated as hedging instruments	$150	($555)	$235	($785)
Net Gain (Loss) on Mortgage Banking Activities [Member] | Interest Rate Locks with Customers [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Income for derivatives not designated as hedging instruments	350	-1,549	448	-1,611
Net Gain (Loss) on Mortgage Banking Activities [Member] | Forward Loan Sale Commitments [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Income for derivatives not designated as hedging instruments	($200)	$994	($213)	$826

Derivative_Instruments_and_Hed5

Derivative Instruments and Hedging Activities - Income for Derivatives Designated as Hedging Instruments (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Net loss	'	($1,875)	'	($1,990)
Net Loss on Termination of Interest Rate Swap [Member] | Interest Rate Swap [Member] | Cash Flow Hedge [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Interest rate swap-cash flow hedge-loss on termination	'	-1,866	'	-1,866
Interest Expense [Member] | Interest Rate Swap [Member] | Cash Flow Hedge [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Interest rate swap-cash flow hedge-interest payments	'	9	'	124
Interest rate swap-cash flow hedge-ineffectiveness	'	'	'	'

Fair_Value_Disclosures_Additio

Fair Value Disclosures - Additional Information (Detail) (USD $)

6 Months Ended

12 Months Ended

6 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jan. 27, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Fair Value Measured on Recurring Basis [Member]

Fair Value Measured on Recurring Basis [Member]

Loans Held For Sale [Member]

Level 3 [Member]

Level 3 [Member]

Girard Partners [Member]

Girard Partners [Member]

Javers Group [Member]

Javers Group [Member]

John T. Fretz Insurance Agency [Member]

Fair Value Measured on Recurring Basis [Member]

Fair Value Measured on Recurring Basis [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Potential cash payments from contingent consideration, minimum

'

'

'

'

'

'

'

$0

'

'

'

$0

Potential cash payments from contingent consideration, maximum

'

'

'

'

'

'

'

14,500,000

'

'

'

620,000

Potential cash payments from contingent consideration, period of measurement (in years)

'

'

'

'

'

'

'

'5 years

'

'3 years

'

'

Potential cash payments from contingent consideration, end date

'

'

'

'

'

'

'

31-Dec-18

'

30-Jun-15

'

30-Apr-16

Remaining potential cash payments from contingent consideration, period of measurement (in years)

'

'

'

'

'

'

'

'

'

'

'

'2 years

Reduction of other noninterest expense

'

'

'

'

'

'

'

'

'

'

959,000

'

Fair value of contingent consideration liability

'

'

'

'

'

'

'

'

5,500,000

0

'

'

Original potential cash payments from contingent consideration, minimum

'

'

'

'

'

'

'

0

'

0

'

'

Original potential cash payments from contingent consideration, maximum

'

'

'

'

'

'

'

14,500,000

'

1,700,000

'

'

Assets measured at fair value on a recurring basis

'

'

302,625,000

336,627,000

'

0

0

'

'

'

'

'

Credit card loans

'

'

'

'

8,400,000

'

'

'

'

'

'

'

Nonaccrual Loans and Leases

17,742,000

23,235,000

'

'

532,000

'

'

'

'

'

'

'

Valuation adjustments for loans held for sale

0

0

'

'

'

'

'

'

'

'

'

'

Carrying amount of impaired loans

52,400,000

58,300,000

'

'

'

'

'

'

'

'

'

'

Valuation allowance of impaired loans

1,144,000

2,963,000

'

'

'

'

'

'

'

'

'

'

Mortgage servicing rights valuation allowance

243,000

250,000

'

'

'

'

'

'

'

'

'

'

Mortgage servicing rights carrying amount

5,600,000

5,800,000

'

'

'

'

'

'

'

'

'

'

Goodwill impairment

0

'

'

'

'

'

'

'

'

'

'

'

Impairment of intangible assets

$0

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_Disclosures_Assets_

Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	$301,856	$336,281
Fair Value Measured on Recurring Basis [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	301,856	336,281
Total assets	302,625	336,627
Total liabilities	6,375	501
Fair Value Measured on Recurring Basis [Member] | U.S. Treasuries [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	4,808	4,708
Fair Value Measured on Recurring Basis [Member] | U.S. Government Corporations and Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	122,882	128,148
Fair Value Measured on Recurring Basis [Member] | State and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	107,364	107,657
Fair Value Measured on Recurring Basis [Member] | Residential Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	12,169	35,480
Fair Value Measured on Recurring Basis [Member] | Collateralized Mortgage Obligations [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	6,703	7,201
Fair Value Measured on Recurring Basis [Member] | Corporate Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	42,612	33,840
Fair Value Measured on Recurring Basis [Member] | Money Market Mutual Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	4,011	16,900
Fair Value Measured on Recurring Basis [Member] | Equity Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	1,307	2,347
Fair Value Measured on Recurring Basis [Member] | Interest Rate Locks with Customers [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative assets	769	321
Fair Value Measured on Recurring Basis [Member] | Contingent Consideration Liability [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative liabilities	6,187	501
Fair Value Measured on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative assets	'	25
Derivative liabilities	188	'
Level 1 [Member] | Fair Value Measured on Recurring Basis [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	10,126	23,955
Total assets	10,126	23,955
Level 1 [Member] | Fair Value Measured on Recurring Basis [Member] | U.S. Treasuries [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	4,808	4,708
Level 1 [Member] | Fair Value Measured on Recurring Basis [Member] | Money Market Mutual Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	4,011	16,900
Level 1 [Member] | Fair Value Measured on Recurring Basis [Member] | Equity Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	1,307	2,347
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	291,730	312,326
Total assets	292,499	312,672
Total liabilities	188	'
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member] | U.S. Government Corporations and Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	122,882	128,148
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member] | State and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	107,364	107,657
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member] | Residential Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	12,169	35,480
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member] | Collateralized Mortgage Obligations [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	6,703	7,201
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member] | Corporate Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	42,612	33,840
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member] | Interest Rate Locks with Customers [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative assets	769	321
Level 2 [Member] | Fair Value Measured on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative assets	'	25
Derivative liabilities	188	'
Level 3 [Member] | Fair Value Measured on Recurring Basis [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total assets	0	0
Total liabilities	6,187	501
Level 3 [Member] | Fair Value Measured on Recurring Basis [Member] | Contingent Consideration Liability [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative liabilities	$6,187	$501

Fair_Value_Disclosures_Conting

Fair Value Disclosures - Contingent Consideration Liability Change in Amount (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Business Acquisition, Contingent Consideration [Line Items]	'	'
Beginning Balance	$501	$903
Contingent Consideration from New Acquisition	5,470	454
Payment of Contingent Consideration	310	'
Adjustment of Contingent Consideration liability	526	-892
Ending Balance	6,187	465
Girard Partners [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Contingent Consideration from New Acquisition	5,470	'
Adjustment of Contingent Consideration liability	384	'
Ending Balance	5,854	'
John T. Fretz Insurance Agency [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Beginning Balance	501	'
Contingent Consideration from New Acquisition	'	454
Payment of Contingent Consideration	310	'
Adjustment of Contingent Consideration liability	142	11
Ending Balance	333	465
Javers Group [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Beginning Balance	'	903
Adjustment of Contingent Consideration liability	'	($903)

Fair_Value_Disclosures_Assets_1

Fair Value Disclosures - Assets Measured at Fair Value on Non-recurring Basis (Detail) (Fair Value, Measurements, Nonrecurring [Member], USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans held for investment	$51,280	$55,370
Total assets	51,280	55,370
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Impaired loans held for investment	51,280	55,370
Total assets	$51,280	$55,370

Fair_Value_Disclosures_Assets_2

Fair Value Disclosures - Assets, Liabilities and Off-balance Sheet Items Not Measured at Fair Value (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets:	'	'
Held-to-maturity securities	$57,499	$66,853
Deposits:	'	'
Time deposits	268,230	270,789
Fair Value [Member]	'	'
Assets:	'	'
Cash and short-term interest-earning assets	57,607	69,169
Held-to-maturity securities	57,499	66,853
Loans held for sale	10,348	2,267
Net loans and leases held for investment	1,524,160	1,477,945
Mortgage servicing rights	6,989	7,188
Other real estate owned	1,650	1,650
Total assets	1,658,253	1,625,072
Deposits:	'	'
Demand and savings deposits, non-maturity	1,564,004	1,573,709
Time deposits	270,978	268,909
Total deposits	1,834,982	1,842,618
Short-term borrowings	45,066	35,687
Total liabilities	1,880,048	1,878,305
Off-Balance-Sheet:	'	'
Commitments to extend credit	-1,381	-1,357
Fair Value [Member] | Level 1 [Member]	'	'
Assets:	'	'
Cash and short-term interest-earning assets	57,607	69,169
Total assets	57,607	69,169
Deposits:	'	'
Demand and savings deposits, non-maturity	1,564,004	1,573,709
Total deposits	1,564,004	1,573,709
Total liabilities	1,564,004	1,573,709
Fair Value [Member] | Level 2 [Member]	'	'
Assets:	'	'
Held-to-maturity securities	57,499	66,853
Loans held for sale	9,816	2,267
Mortgage servicing rights	'	7,188
Other real estate owned	1,650	1,650
Total assets	68,965	77,958
Deposits:	'	'
Time deposits	270,978	268,909
Total deposits	270,978	268,909
Short-term borrowings	45,066	35,687
Total liabilities	316,044	304,596
Off-Balance-Sheet:	'	'
Commitments to extend credit	-1,381	-1,357
Fair Value [Member] | Level 3 [Member]	'	'
Assets:	'	'
Loans held for sale	532	'
Net loans and leases held for investment	1,524,160	1,477,945
Mortgage servicing rights	6,989	'
Total assets	1,531,681	1,477,945
Carrying Amount [Member]	'	'
Assets:	'	'
Cash and short-term interest-earning assets	57,607	69,169
Held-to-maturity securities	56,604	66,003
Loans held for sale	9,811	2,267
Net loans and leases held for investment	1,511,620	1,461,620
Mortgage servicing rights	5,378	5,519
Other real estate owned	1,650	1,650
Total assets	1,642,670	1,606,228
Deposits:	'	'
Demand and savings deposits, non-maturity	1,564,004	1,573,709
Time deposits	268,230	270,789
Total deposits	1,832,234	1,844,498
Short-term borrowings	45,066	37,256
Total liabilities	$1,877,300	$1,881,754

Subsequent_Event_Additional_In

Subsequent Event - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jul. 01, 2014	Jul. 01, 2014	Jul. 01, 2014
			Sterner Insurance Associates Inc [Member]	Sterner Insurance Associates Inc [Member]	Sterner Insurance Associates Inc [Member]	Sterner Insurance Associates Inc [Member]
				Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
						Customer Related Intangible Assets [Member]
Subsequent Event [Line Items]	'	'	'	'	'	'
Acquisition completion date	'	'	1-Jul-14	'	'	'
Cash paid for acquisition	'	'	'	$3,900,000	'	'
Fair value of contingent consideration liability	'	'	'	'	940,000	'
Potential cash payments from contingent consideration, period of measurement (in years)	'	'	'	'3 years	'	'
Potential cash payments from contingent consideration, end date	'	'	30-Jun-17	'	'	'
Original potential cash payments from contingent consideration, minimum	'	'	'	'	0	'
Original potential cash payments from contingent consideration, maximum	'	'	'	'	5,700,000	'
Fair value of contingent consideration liabilities	'	'	'	'	635,000	'
Goodwill	64,326,000	57,517,000	'	'	3,400,000	'
Intangibles	'	'	'	'	'	$1,600,000
Amortization period	'	'	'	'	'	'9 years