Lakeland Bancorp (LBAI) 10-K 28 Apr 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 01, 2014	Jun. 30, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'LBAI	'	'
Entity Registrant Name	'LAKELAND BANCORP INC	'	'
Entity Central Index Key	'0000846901	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	36,100,437	'
Entity Public Float	'	'	$342,000,000

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS	'	'
Cash	$94,205	$100,926
Interest-bearing deposits due from banks	8,516	6,619
Total cash and cash equivalents	102,721	107,545
Investment securities, available for sale, at fair value	431,106	393,710
Investment securities, held to maturity, at amortized cost with fair value of $100,394 in 2013 and $99,784 in 2012	101,744	96,925
Federal Home Loan Bank and other membership stock, at cost	7,938	5,382
Loans held for sale	1,206	'
Loans, net of deferred costs (fees)	2,469,016	2,146,843
Less: allowance for loan and lease losses	29,821	28,931
Net loans	2,439,195	2,117,912
Premises and equipment-net	37,148	33,280
Accrued interest receivable	8,603	7,643
Goodwill	109,974	87,111
Other identifiable intangible assets	2,424	'
Bank owned life insurance	55,968	46,143
Other assets	19,764	23,052
TOTAL ASSETS	3,317,791	2,918,703
Deposits:	'	'
Noninterest bearing	600,652	498,066
Savings and interest-bearing transaction accounts	1,812,467	1,569,139
Time deposits under $100 thousand	180,859	188,278
Time deposits $100 thousand and over	115,227	115,514
Total deposits	2,709,205	2,370,997
Federal funds purchased and securities sold under agreements to repurchase	81,991	117,289
Other borrowings	119,000	85,000
Subordinated debentures	41,238	51,548
Other liabilities	14,933	13,002
TOTAL LIABILITIES	2,966,367	2,637,836
STOCKHOLDERS' EQUITY	'	'
Common stock, no par value; authorized 70,000,000 shares; issued shares, 36,070,286 at December 31,2013 and 29,941,967 at December 31, 2012; outstanding shares, 36,070,286 at December 31, 2013 and 29,725,890 at December 31, 2012	364,637	303,794
Accumulated Deficit	-8,538	-24,145
Treasury stock, at cost, 0 shares in 2013 and 216,077 shares in 2012	'	-2,718
Accumulated other comprehensive (loss) gain	-4,675	3,936
TOTAL STOCKHOLDERS' EQUITY	351,424	280,867
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$3,317,791	$2,918,703

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Investment securities held to maturity; fair value	$100,394	$99,784
Common stock, par value	'	'
Common stock, shares authorized	70,000,000	70,000,000
Common stock, shares issued	36,070,286	29,941,967
Common stock, shares outstanding	36,070,286	29,725,890
Treasury stock, shares	0	216,077

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
INTEREST INCOME	'	'	'
Loans, leases and fees	$104,329	$100,513	$104,585
Federal funds sold and interest-bearing deposits with banks	93	51	51
Taxable investment securities and other	7,985	8,574	10,882
Tax-exempt investment securities	1,792	1,821	2,006
TOTAL INTEREST INCOME	114,199	110,959	117,524
INTEREST EXPENSE	'	'	'
Deposits	6,089	8,344	10,878
Federal funds purchased and securities sold under agreements to repurchase	39	79	88
Other borrowings	3,529	7,023	9,145
TOTAL INTEREST EXPENSE	9,657	15,446	20,111
NET INTEREST INCOME	104,542	95,513	97,413
Provision for loan and lease losses	9,343	14,907	18,816
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE LOSSES	95,199	80,606	78,597
NONINTEREST INCOME	'	'	'
Service charges on deposit accounts	10,837	10,504	10,262
Commissions and fees	4,585	4,491	3,703
Gain on sales and calls of investment securities, net	839	1,049	1,229
Gain on debt extinguishment	1,197	'	'
Income on bank owned life insurance	1,410	1,344	1,423
Other income	2,093	1,517	1,500
TOTAL NONINTEREST INCOME	20,961	18,905	18,117
NONINTEREST EXPENSE	'	'	'
Salaries and employee benefits	41,871	38,586	36,500
Net occupancy expense	8,074	7,089	6,885
Furniture and equipment	6,181	4,751	4,726
Stationery, supplies and postage	1,482	1,415	1,396
Marketing expense	2,088	2,034	2,409
Core deposit intangible amortization	288	'	577
FDIC insurance expense	2,014	2,163	2,790
Legal expense	1,032	1,236	1,692
Other real estate and repossessed asset expense	24	99	780
Long-term debt prepayment fee	1,209	782	800
Merger related expenses	2,834	'	'
Other expenses	11,644	9,518	9,596
TOTAL NONINTEREST EXPENSE	78,741	67,673	68,151
Income before provision for income taxes	37,419	31,838	28,563
Provision for income taxes	12,450	10,096	8,712
NET INCOME	24,969	21,742	19,851
Dividends on Preferred Stock and Accretion	'	620	2,167
Net Income Available to Common Stockholders	$24,969	$21,122	$17,684
PER SHARE OF COMMON STOCK:	'	'	'
Basic earnings	$0.75	$0.76	$0.66
Diluted earnings	$0.75	$0.76	$0.66
Cash dividends	$0.29	$0.25	$0.23

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Income And Comprehensive Income [Abstract]	'	'	'
Net income	$24,969	$21,742	$19,851
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:	'	'	'
Unrealized securities gains (losses) during period	-8,690	1,728	5,445
Less: reclassification for gains included in net income	509	682	799
Change in pension liability, net	588	19	-102
Net current period other comprehensive income (loss)	-8,611	1,065	4,544
TOTAL COMPREHENSIVE INCOME	$16,358	$22,807	$24,395

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Stock [Member]	Series A Preferred Stock [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
In Thousands, except Share data
BALANCE at Dec. 31, 2010	$260,709	$271,595	$37,474	($38,004)	($8,683)	($1,673)
BALANCE, Shares at Dec. 31, 2010	'	25,977,592	'	'	'	'
Net income	19,851	'	'	19,851	'	'
Other comprehensive income, net of tax	4,544	'	'	'	'	4,544
Preferred dividends	-1,161	'	'	-1,161	'	'
Accretion of discount	'	'	1,006	-1,006	'	'
Stock based compensation	627	627	'	'	'	'
Redemption of preferred stock	-20,000	'	-20,000	'	'	'
Adjustment for stock dividend	'	-309	'	309	'	'
Adjustment for stock dividend, Shares	'	-944	'	'	'	'
Issuance of restricted stock awards	'	-1,262	'	'	1,262	'
Issuance of stock to dividend reinvestment and stock purchase plan	185	-520	'	-1,009	1,714	'
Exercise of stock options, net of excess tax benefits	69	-87	'	'	156	'
Cash dividends, common stock	-5,041	'	'	-5,041	'	'
BALANCE at Dec. 31, 2011	259,783	270,044	18,480	-26,061	-5,551	2,871
BALANCE, Shares at Dec. 31, 2011	'	25,976,648	'	'	'	'
Net income	21,742	'	'	21,742	'	'
Other comprehensive income, net of tax	1,065	'	'	'	'	1,065
Preferred dividends	-100	'	'	-100	'	'
Accretion of discount	'	'	520	-520	'	'
Stock based compensation	746	746	'	'	'	'
Redemption of preferred stock	-19,000	'	-19,000	'	'	'
Warrant repurchase	-2,800	-2,800	'	'	'	'
Stock dividend	'	12,345	'	-12,345	'	'
Stock dividend, Shares	'	1,298,066	'	'	'	'
Stock issuance, net of expenses	25,040	25,040	'	'	'	'
Stock issuance, net of expenses, Shares	'	2,667,253	'	'	'	'
Issuance of restricted stock awards	'	-1,153	'	'	1,153	'
Issuance of stock to dividend reinvestment and stock purchase plan	160	-432	'	-1,088	1,680	'
Exercise of stock options, net of excess tax benefits	4	4	'	'	'	'
Cash dividends, common stock	-5,773	'	'	-5,773	'	'
BALANCE at Dec. 31, 2012	280,867	303,794	'	-24,145	-2,718	3,936
BALANCE, Shares at Dec. 31, 2012	'	29,941,967	'	'	'	'
Net income	24,969	'	'	24,969	'	'
Other comprehensive income, net of tax	-8,611	'	'	'	'	-8,611
Stock based compensation	895	895	'	'	'	'
Issuance of restricted stock awards	'	-1,301	'	'	1,301	'
Issuance of stock for acquisition	57,419	57,419	'	'	'	'
Issuance of stock for acquisition, Shares	'	5,794,079	'	'	'	'
Issuance of stock options for acquisition	1,500	1,500	'	'	'	'
Issuance of stock to dividend reinvestment and stock purchase plan	186	458	'	-1,210	938	'
Issuance of stock to dividend reinvestment and stock purchase plan, Shares	'	57,109	'	'	'	'
Exercise of stock options, net of excess tax benefits	2,351	1,872	'	'	479	'
Exercise of stock options, net of excess tax benefits, Shares	346,869	277,131	'	'	'	'
Cash dividends, common stock	-8,152	'	'	-8,152	'	'
BALANCE at Dec. 31, 2013	$351,424	$364,637	'	($8,538)	'	($4,675)
BALANCE, Shares at Dec. 31, 2013	'	36,070,286	'	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'
Net income	$24,969	$21,742	$19,851
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Net amortization of premiums, discounts and deferred loan fees and costs	4,787	6,125	6,519
Depreciation and amortization	3,625	3,067	2,904
Amortization of intangible assets	288	'	577
Provision for loan and lease losses	9,343	14,907	18,816
Stock based compensation	895	746	627
Loans originated for sale	-34,718	'	'
Proceeds from sales of loans	36,804	'	'
Gains on securities	-839	-1,049	-1,229
Gains on sales of loans held for sale	-760	'	'
Gains on debt extinguishment	-1,197	'	'
Gains on leases	'	-471	-1,026
Writedown of other repossessed assets	'	'	230
(Gains) losses on other real estate and other repossessed assets	-934	-47	115
Gain on sale of premises and equipment	-60	-201	-167
Deferred tax provision	164	576	172
Decrease in other assets	7,366	2,107	2,162
Increase in other liabilities	995	1,089	379
NET CASH PROVIDED BY OPERATING ACTIVITIES	50,728	48,591	49,930
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Net cash acquired in acquisition	74,316	'	'
Proceeds from repayments on and maturity of securities:	'	'	'
Available for sale	70,779	117,130	161,241
Held to maturity	22,952	26,070	20,057
Proceeds from sales of securities:	'	'	'
Available for sale	64,020	97,824	92,409
Purchase of securities:	'	'	'
Available for sale	-187,452	-144,652	-234,230
Held to maturity	-19,603	-54,510	-26,834
Net (increase) decrease in Federal Home Loan Bank and other membership bank stock	-2,063	2,951	1,530
Proceeds from sales of leases	'	'	16,433
Net increase in loans and leases	-91,201	-120,870	-64,403
Proceeds from dispositions of premises and equipment	463	749	325
Capital expenditures	-2,786	-8,978	-3,425
Proceeds from sales of other real estate and other repossessed assets	4,509	1,768	2,548
NET CASH USED IN INVESTING ACTIVITIES	-66,066	-82,518	-34,349
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Net increase in deposits	26,540	121,344	53,764
Increase (decrease) in federal funds purchased and securities sold under agreements to repurchase	-35,298	45,158	20,008
Proceeds from other borrowings	50,000	280,000	140,000
Repayments of other borrowings	-16,000	-350,000	-180,000
Issuance of stock to Dividend Reinvestment and Stock Purchase Plan	186	160	185
Proceeds on issuance of stock, net	'	25,040	'
Redemption of subordinated debentures, net	-9,113	-25,000	'
Redemption of preferred stock and common stock warrant	'	-21,800	-20,000
Exercise of stock options	2,209	'	72
Excess tax benefits	142	4	-3
Dividends paid on preferred stock	'	-219	-1,286
Dividends paid on common stock	-8,152	-5,773	-5,041
NET CASH PROVIDED BY FINANCING ACTIVITIES	10,514	68,914	7,699
Net increase (decrease) in cash and cash equivalents	-4,824	34,987	23,280
Cash and cash equivalents, beginning of year	107,545	72,558	49,278
CASH AND CASH EQUIVALENTS, END OF YEAR	$102,721	$107,545	$72,558

Summary_of_Accounting_Policies

Summary of Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Accounting Policies	'
	NOTE 1—SUMMARY OF ACCOUNTING POLICIES
	Lakeland Bancorp, Inc. (the Company) is a bank holding company whose principal activity is the ownership and management of its wholly owned subsidiary, Lakeland Bank (Lakeland). Lakeland operates under a state bank charter and provides full banking services and, as a state bank, is subject to regulation by the New Jersey Department of Banking and Insurance. Lakeland generates commercial, mortgage and consumer loans and receives deposits from customers located primarily in Northern and Central New Jersey. Lakeland also provides non-deposit products, such as securities brokerage services, including mutual funds and variable annuities.
	Lakeland operates as a commercial bank offering a wide variety of commercial loans and leases and, to a lesser degree, consumer credits. Its primary strategic aim is to establish a reputation and market presence as the “small and middle market business bank” in its principal markets. Lakeland funds its loans primarily by offering time, savings and money market, and demand deposit accounts to both commercial enterprises and individuals. Additionally, it originates residential mortgage loans, and services such loans which are owned by other investors. Lakeland also has an equipment finance division which provides equipment lease financing primarily to small and medium sized business clients and an asset based lending department which specializes in utilizing particular assets to fund the working capital needs of borrowers.
	The Company and Lakeland are subject to regulations of certain state and federal agencies and, accordingly, are periodically examined by those regulatory authorities. As a consequence of the extensive regulation of commercial banking activities, Lakeland’s business is particularly susceptible to being affected by state and federal legislation and regulations.
	Certain reclassifications have been made to prior period financial statements to conform to the 2013 presentation.
	Basis of Financial Statement Presentation
	The accounting and reporting policies of the Company and its subsidiaries conform with accounting principles generally accepted in the United States of America (U.S. GAAP) and predominant practices within the banking industry. The consolidated financial statements include the accounts of the Company, Lakeland, Lakeland NJ Investment Corp., Lakeland Investment Corp., Lakeland Equity, Inc., Lakeland Preferred Equity, Inc. and Sullivan Financial Services. All intercompany balances and transactions have been eliminated.
	The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also affect reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Significant estimates implicit in these financial statements are as follows.
	The principal estimates that are particularly susceptible to significant change in the near term relate to the allowance for loan and lease losses, the valuation of the Company’s investment securities portfolio, the realizability of the Company’s deferred tax asset and the analysis of goodwill and intangible impairment. The policies regarding these estimates are discussed below.
	The Company’s operating segments are components of its enterprise for which separate financial information is available and is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assess performance. The Company’s chief operating decision maker is its Chief Executive Officer. All of the Company’s financial services activities are interrelated, and each activity is dependent and assessed based on how each of the activities of the Company supports the others. For example, commercial lending is dependent upon the ability of Lakeland to fund itself with retail deposits and other borrowings and to manage interest rate and credit risk. The situation is also similar for consumer and residential mortgage lending. Moreover, the Company operates in one market area, Northern and Central New Jersey. Therefore, all significant operating decisions are based upon analysis of the Company as one operating segment or unit. Accordingly, the Company has determined that it has one operating segment and thus one reporting segment.
	Investment Securities
	Investment securities are classified in one of three categories: held to maturity, trading, or available for sale. Investments in debt securities, for which management has both the ability and intent to hold to maturity, are carried at cost, adjusted for the amortization of premiums and accretion of discounts computed by the effective interest method. Investments in debt and equity securities, which management believes may be sold prior to maturity due to changes in interest rates, prepayment risk, liquidity requirements, or other factors, are classified as available for sale. Net unrealized gains and losses for such securities, net of tax effect, are reported as other comprehensive income (loss) and excluded from the determination of net income. The Company does not engage in securities trading. Gains or losses on disposition of investment securities are based on the net proceeds and the adjusted carrying amount of the securities sold using the specific identification method. Losses are recorded through the statement of operations when the impairment is considered other-than-temporary, even if a decision to sell has not been made.
	The Company evaluates its portfolio for impairment each quarter. In estimating other-than-temporary losses, the Company considers the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, and whether the Company is more likely than not to sell the security before recovery of its cost basis. If a security has been impaired for more than twelve months, and the impairment is deemed other-than-temporary, a write down will occur in that quarter. If a loss is deemed to be other-than-temporary, it is recognized as a realized loss in the income statement with the security assigned a new cost basis.
	If the Company intends to sell an impaired security, the Company records an other-than-temporary loss in an amount equal to the entire difference between the fair value and amortized cost. If a security is determined to be other-than-temporarily impaired, but the Company does not intend to sell the security, only the credit portion of the estimated loss is recognized in earnings in gain (loss) on securities, with the other portion of the loss recognized in other comprehensive income. If a determination is made that an equity security is other-than-temporarily impaired, the unrealized loss will be recognized as an other-than-temporary impairment charge in non-interest income as a component of gain (loss) on investment securities.
	Loans and Leases and Allowance for Loan and Lease Losses
	Loans and leases that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at the amount of unpaid principal and are net of unearned discount, unearned loan fees and an allowance for loan and lease losses.
	Interest income is accrued as earned on a simple interest basis. All unamortized fees and costs related to the loan are amortized over the life of the loan using the interest method. Accrual of interest is discontinued on a loan or lease when management believes, after considering economic and business conditions and collection efforts that the borrower’s financial condition is such that full collection of interest and principal is doubtful. When a loan or lease is placed on such non-accrual status, all accumulated accrued interest receivable is reversed out of current period income.
	Commercial loans and leases are placed on a non-accrual status with all accrued interest and unpaid interest reversed if (a) because of the deterioration in the financial position of the borrower they are maintained on a cash basis (which means payments are applied when and as received rather than on a regularly scheduled basis), (b) payment in full of interest or principal is not expected, or (c) principal and interest have been in default for a period of 90 days or more unless the obligation is both well-secured and in process of collection. Residential mortgage loans are placed on non-accrual status at the time principal and interest have been in default for a period of 90 days or more, except where there exists sufficient collateral to cover the defaulted principal and interest payments, and management’s knowledge of the specific circumstances warrant continued accrual. Consumer loans are generally placed on non-accrual and reviewed for charge-off when principal and interest payments are four months in arrears unless the obligations are well-secured and in the process of collection. Interest thereafter on such charged-off consumer loans is taken into income when received only after full recovery of principal. As a general rule, a non-accrual asset may be restored to accrual status when none of its principal or interest is due and unpaid, satisfactory payments have been received for a sustained period (usually six months), or when it otherwise becomes well-secured and in the process of collection.
	Loans and leases are considered impaired when, based on current information and events, it is probable that Lakeland will be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. Impairment is measured based on the present value of expected cash flows discounted at the loan’s effective interest rate, or as a practical expedient, Lakeland may measure impairment based on a loan’s observable market price, or the fair value of the collateral if the loan is collateral-dependent. Regardless of the measurement method, Lakeland measures impairment based on the fair value of the collateral when it is determined that foreclosure is probable. Most of Lakeland’s impaired loans are collateral-dependent. Lakeland groups impaired commercial loans under $500,000 into a homogeneous pool and collectively evaluates them. Interest received on impaired loans and leases may be recorded as interest income. However, if management is not reasonably certain that an impaired loan and lease will be repaid in full, or if a specific time frame to resolve full collection cannot yet be reasonably determined, all payments received are recorded as reductions of principal.
	Loans are classified as troubled debt restructured loans in cases where borrowers experience financial difficulties and Lakeland makes certain concessionary modifications to contractual terms. Restructured loans typically involve a modification of terms such as a reduction of the stated interest rate, an extended moratorium of principal payments and/or an extension of the maturity date at a stated interest rate lower than the current market rate for a new loan with similar risk. Nonetheless, restructured loans are classified as impaired loans.
	Once an obligation has been restructured because of credit problems, it continues to be considered restructured until paid in full or if all of the following conditions are met: (1) the financial problems of the borrower have been cured; (2) the obligation is returned to a market rate and term; and (3) there has been performance for the longer of the next annual reporting period or six consecutive months. If an obligation has been restructured, it will continue to be classified as impaired until the obligation is fully repaid.
	The allowance for loan and lease losses is established through a provision for loan and lease losses charged to expense. Loan principal considered to be uncollectible by management is charged against the allowance for loan and lease losses. The allowance is an amount that management believes will be adequate to absorb losses on existing loans and leases that may become uncollectible based upon an evaluation of known and inherent risks in the loan and lease portfolio. The evaluation takes into consideration such factors as changes in the nature and size of the loan and lease portfolio, overall portfolio quality, specific problem loans and leases, and current economic conditions which may affect the borrowers’ ability to pay. The evaluation also analyzes historical losses by loan and lease category, and considers the resulting loss rates when determining the reserves on current loan and lease total amounts. Loss reserves for specified problem loans and leases are also detailed. All of the factors considered in the analysis of the adequacy of the allowance for loan and lease losses may be subject to change. To the extent actual outcomes differ from management estimates, additional provisions for loan and lease losses may be required that would adversely impact earnings in future periods.
	The determination of the adequacy of the allowance for loan and lease losses and the periodic provisioning for estimated losses included in the consolidated financial statements is the responsibility of management and the Board of Directors. The evaluation process is undertaken on a quarterly basis.
	Methodology employed for assessing the adequacy of the allowance consists of the following criteria:
		•		The establishment of reserve amounts for all specifically identified classified loans and leases that have been designated as requiring attention by Lakeland or Lakeland’s external loan review consultants.
		•		The establishment of reserves for pools of homogeneous types of loans and leases not subject to specific review, including impaired commercial loans under $500,000, leases, 1 – 4 family residential mortgages, and consumer loans.
		•		The establishment of reserve amounts for the non-classified loans and leases in each portfolio based upon the historical average loss experience for these portfolios and management’s evaluation of key factors.
		•		Lakeland also maintains an unallocated component in its allowance for loan and lease losses. Management believes that the unallocated amount is warranted for inherent factors that cannot be practically assigned to individual loss categories, such as the periodic updating of appraisals on impaired loans, as well as periodic updating of commercial loan credit risk ratings by loan officers and Lakeland’s internal credit review process.
	Consideration is given to the results of ongoing credit quality monitoring processes, the adequacy and expertise of Lakeland’s lending staff, underwriting policies, loss histories, delinquency trends, and the cyclical nature of economic and business conditions. Since many of Lakeland’s loans depend on the sufficiency of collateral as a secondary source of repayment, any adverse trend in the real estate markets could affect underlying values available to protect Lakeland from loss.
	A loan is reviewed for charge-off when it is placed on non-accrual status with a resulting charge-off if the loan is not secured by collateral having sufficient liquidation value to repay the loan and all outstanding interest owed, and the loan is not in the process of collection. Charge-offs are recommended by the Chief Credit Officer and approved by the Board on a monthly basis.
	Lakeland transfers leases to held for sale status when it identifies leases that it intends to sell. At that time, the specific leases are written down to the lower of cost or market value by recording a charge to the allowance for loan and lease losses. Market indications are derived from sale price indications from potential buyers and based on recent sale prices of prior lease pools adjusted for differences in types of collateral and other characteristics. Subsequent declines in fair market value are recorded as a loss on leasing related assets in the statement of operations. Lakeland has no leases designated as held for sale for the years ended December 31, 2013 or 2012.
	Bank Premises and Equipment
	Bank premises and equipment, including leasehold improvements, are stated at cost less accumulated depreciation. Depreciation expense is computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are depreciated over the shorter of the estimated useful lives of the improvements or the terms of the related leases.
	Other Real Estate Owned and Other Repossessed Assets
	Other real estate owned (OREO) and other repossessed assets, representing property acquired through foreclosure (or deed-in-lieu-of-foreclosure), are carried at fair value less estimated disposal costs of the acquired property. Costs relating to holding the assets are charged to expense. An allowance for OREO or other repossessed assets is established, through charges to expense, to maintain properties at fair value less estimated costs to sell. Operating results of OREO and other repossessed assets, including rental income and operating expenses, are included in other expenses.
	Mortgage Servicing
	Lakeland performs various servicing functions on loans owned by others. A fee, usually based on a percentage of the outstanding principal balance of the loan, is received for these services. At December 31, 2013 and 2012, Lakeland was servicing approximately $37.8 million and $27.9 million, respectively, of loans for others.
	Lakeland originates mortgages under a definitive plan to sell or securitize those loans and service the loans owned by the investor. Upon the transfer of the mortgage loans in a sale or a securitization, Lakeland records the servicing assets retained. Lakeland records mortgage servicing rights and the loans based on relative fair values at the date of origination and evaluates the mortgage servicing rights for impairment at each reporting period. Lakeland also originates loans that it sells to other banks and does not retain the servicing rights.
	Mortgage loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or estimated fair value. Gains and losses on sales of loans are specifically identified and accounted for in accordance with U.S. GAAP which requires that an entity engaged in mortgage banking activities classify the retained mortgage-backed security or other interest, which resulted from the securitization of a mortgage loan held for sale, based upon its ability and intent to sell or hold these investments. As of December 31, 2013, Lakeland had mortgages classified as held for sale totaling $1.2 million. No mortgage loans were identified as held for sale as of December 31, 2012.
	Mortgage Servicing Rights
	When mortgage loans are sold with servicing retained, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. As of December 31, 2013, Lakeland had originated mortgage servicing rights of $274,000.
	Under the amortization measurement method, Lakeland subsequently measures servicing rights at fair value at each reporting date and records any impairment in value of servicing assets in earnings in the period in which the impairment occurs. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the income statement as commissions and fees, is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan, and are recorded as income when earned.
	Transfers of Financial Assets
	Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company-put presumptively beyond the reach of the transferor and its creditors even in bankruptcy or other receivership, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
	Customer Derivatives
	Lakeland enters into interest rate swaps (“swaps”) with loan customers to provide a facility to mitigate the fluctuations in the variable rate on the respective loans. These swaps are matched in offsetting terms to swaps that Lakeland enters into with an outside third party. The swaps are reported at fair value in other assets or other liabilities. Lakeland’s swaps qualify as derivatives, but are not designated as hedging instruments, thus any net gain or loss resulting from changes in the fair value is recognized in other non-interest income. Further discussion of Lakeland’s financial derivatives is set forth in Note 18 to the Consolidated Financial Statements.
	The credit risk associated with derivatives executed with customers is similar as that involved in extending loans and is subject to normal credit policies. Collateral may be obtained based on management’s assessment of the customer. The positions of customer derivatives are recorded at fair value and changes in value are included in non-interest income on the consolidated statement of operations.
	Restrictions On Cash And Due From Banks
	A portion of Lakeland’s cash on hand and on deposit with the Federal Reserve Bank was required to meet regulatory reserve and clearing requirements.
	Earnings Per Share
	Earnings per share is calculated on the basis of the weighted average number of common shares outstanding during the year. Basic earnings per share excludes dilution and is computed by dividing income available to common shareholders by the weighted average common shares outstanding during the period. Diluted earnings per share takes into account the potential dilution that could occur if securities or other contracts to issue common stock were exercised and converted into common stock. Unless otherwise indicated, all weighted average, actual shares or per share information in the financial statements have been adjusted retroactively for the effect of stock dividends.
	Employee Benefit Plans
	The Company has certain employee benefit plans covering substantially all employees. The Company accrues such costs as incurred.
	We recognize the overfunded or underfunded status of pension and postretirement benefit plans in accordance with U.S. GAAP. Actuarial gains and losses, prior service costs or credits, and any remaining transition assets or obligations are recognized as a component of Accumulated Other Comprehensive Income, net of tax effects, until they are amortized as a component of net periodic benefit cost.
	Stock-Based Compensation
	The Company’s shareholders approved the 2009 Equity Compensation Program, which authorizes the granting of incentive stock options, supplemental stock options, restricted shares and restricted stock units to employees of the Company, including those employees serving as officers and directors of the Company. The plan authorizes the issuance of up to 2.2 million shares in connection with options and awards granted under the 2009 program. The Company’s stock option grants under this plan expire 10 years from the date of grant, ninety days after termination of service other than for cause, or one year after death or disability of the grantee. As of December 31, 2013, the Company has no option or restricted stock awards issued with market or performance conditions attached to them. The Company generally issues shares for option exercises from its treasury stock using the cost method or issues new shares if no treasury shares are available.
	The Company established the 2000 Equity Compensation Program which authorizes the granting of incentive stock options, supplemental stock options and restricted stock to employees of the Company, which includes those employees serving as officers and directors of the Company. The plan authorized 2,488,748 shares of common stock of the Company. All of the Company’s stock option grants expire 10 years from the date of grant, thirty days after termination of service other than for cause, or one year after death or disability of the grantee. The Company has no option or restricted stock awards with market or performance conditions attached to them. No further awards will be granted from the 2000 program.
	Statement Of Cash Flows
	Cash and cash equivalents are defined as cash on hand, cash items in the process of collection, amounts due from banks and federal funds sold with an original maturity of three months or less. The following shows supplemental non-cash investing and financing activities for the periods presented:
			2013		2012		2011
			(in thousands)
	Transfer of loans and leases receivable to other real estate owned and other repossessed assets		$	3,565	$	1,068	$	2,482
	Cash paid for income taxes			12,051		9,382		8,874
Cash paid for interest			10,804		16,334		20,366
Transfer of leases from held for sale to held for investment			—		—		1,517
Acquisition of Somerset Hills Bancorp:
Non-cash assets acquired:
Investment securities available for sale			1,777		—		—
Investment securities held for maturity			8,686		—		—
Loans, including loans held for sale			246,459		—		—
Goodwill and other intangible assets, net			25,574		—		—
Other assets			15,653		—		—
Total non-cash assets acquired			298,149
Liabilities assumed:
Deposits			311,801		—		—
Other liabilities			1,745		—		—
Total liabilities assumed			313,546		—		—
Common stock issued and fair value of stock options converted to Lakeland Bancorp stock options			58,919		—		—
Comprehensive Income
The Company reports comprehensive income in addition to net income (loss) from operations. Comprehensive income is a more inclusive financial reporting methodology that includes disclosure of certain financial information that historically has not been recognized in the calculation of net income.
Goodwill and Other Identifiable Intangible Assets
The Company has goodwill of $110.0 million at December 31, 2013 which includes $22.9 million from the Somerset Hills acquisition and $87.1 million from prior acquisitions. Total goodwill was $87.1 million at December 31, 2012. The Company recorded $2.7 million in Core Deposit Intangible from the Somerset Hills Acquisition in 2013 and recorded $288,000 in core deposit amortization in 2013. Core deposit intangible was $2.4 million on December 31, 2013 compared to no core deposit intangible on December 31, 2012. Core deposit intangibles were $578,000 at December 31, 2010 which was fully amortized in 2011.
The Company reviews goodwill for impairment annually as of November 30 or when circumstances indicate a potential for impairment at the reporting unit level. U.S. GAAP requires at least an annual review of the fair value of a Reporting Unit that has goodwill in order to determine if it is more likely than not (that is, a likelihood of more than 50%) that the fair value of a reporting unit is less than its carrying amount, including goodwill. If this qualitative test determines it is unlikely (less than 50% probability) the carrying value of the Reporting Unit is less than its fair value, then the company does not have to perform a Step One impairment test. If the probability is greater than 50%, a Step One goodwill impairment test is required. The Step One test compares the fair value of each reporting unit to the carrying value of its net assets, including goodwill. If the fair value is less than carrying value, the Step Two test is required. The Company has determined that it has one reporting unit, Community Banking.
The Company performed a qualitative analysis to determine whether “the weight of evidence, the significance of all identified events and circumstances” indicated a greater than 50% likelihood existed that the carrying value of the Reporting Unit exceeded its fair value and if a Step One Test would be required. The Company identified nine qualitative assessments that are relative to the banking industry and to the Company. These factors included macroeconomic factors, banking industry conditions, banking merger and acquisition trends, Lakeland’s historical performance, the Company’s stock price, the expected performance of Lakeland, the change of control premium of the Company versus its peers and other miscellaneous factors. After reviewing and weighting these factors, the Company, as well as a third party adviser, determined as of November 30, 2013 that there was a less than 50% probability that the fair value of the Company was less than its carrying amount. Therefore, no Step One test was required.
Bank Owned Life Insurance
Lakeland invests in bank owned life insurance (“BOLI”). BOLI involves the purchasing of life insurance by Lakeland on a chosen group of employees. Lakeland is owner and beneficiary of the policies. At December 31, 2013 and 2012, Lakeland had $56.0 million and $46.1 million, respectively, in BOLI. Income earned on BOLI was $1.4 million, $1.3 million and $1.4 million for the years ended December 31, 2013, 2012 and 2011, respectively. The increase in income earned on BOLI in 2013 compared to 2012 was due to an increase in policies resulting from the Somerset Hills acquisition.
Income Taxes
The Company accounts for income taxes under the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities as measured by the enacted tax rates that will be in effect when these differences reverse. Deferred tax expense is the result of changes in deferred tax assets and liabilities. The principal types of differences between assets and liabilities for financial statement and tax return purposes are allowance for loan and lease losses, core deposit intangibles, deferred loan fees and deferred compensation.
The Company evaluates tax positions that may be uncertain using a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken or expected to be taken on a tax return, in order for those tax positions to be recognized in the financial statements. Additional information regarding the Company’s uncertain tax positions is set forth in Note 9 below.
Variable Interest Entities
Management has determined that Lakeland Bancorp Capital Trust II and Lakeland Bancorp Capital Trust IV (collectively, “the Trusts”) qualify as variable interest entities. The Trusts issued mandatorily redeemable preferred stock to investors and loaned the proceeds to the Company. The Trusts hold, as their sole asset, subordinated debentures issued by the Company. The Company is not considered the primary beneficiary of the Trusts, therefore the Trusts are not consolidated in the Company’s financial statements.
The Company’s maximum exposure to the Trusts is $40 million at December 31, 2013 which is the Company’s liability to the Trusts and includes the Company’s investment in the Trusts.
The Federal Reserve has issued guidance on the regulatory capital treatment for the trust preferred securities issued by the Trusts. The rule retains the current maximum percentage of total capital permitted for trust preferred securities at 25%, but enacts other changes to the rules governing trust preferred securities that affect their use as part of the collection of entities known as “restricted core capital elements.” The rule allows bank holding companies to continue to count trust preferred securities as Tier 1 Capital. The Company’s capital ratios continue to be categorized as “well-capitalized” under the regulatory framework for prompt corrective action. Under the Collins Amendment to the Dodd-Frank Wall Street Reform and Consumer Protection Act, any new issuance of trust preferred securities by the Company would not be eligible as regulatory capital.
New Accounting Pronouncements
In January 2014, the Financial Accounting Standards Board (the “FASB”) issued an accounting standards update to clarify when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan should be derecognized and the real estate recognized. These amendments clarify that 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: (a) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure; or (b) 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. This update is effective for annual periods and interim periods within those annual periods beginning after December 15, 2014. The adoption of this update is not expected to have a material impact on the Company’s financial statements.
In July 2013, the Financial Accounting Standards Board (the “FASB”) issued an accounting pronouncement to improve the reporting for unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The pronouncement is expected to reduce diversity in practice by providing guidance on the presentation of unrecognized tax benefits and will better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. The pronouncement is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this pronouncement is not expected to have a material impact on the Company’s financial statements.
In July 2013, the FASB issued guidance permitting the Fed Funds Effective Swap Rate to be used as a U.S. benchmark interest rate for hedge accounting purposes, in addition to interest rates on direct Treasury obligations of the U.S. government and the London Interbank Offered Rate (“LIBOR”). This guidance is effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013 and is not expected to have a significant impact on the Company’s financial statements.
In February 2013, the FASB issued guidance relating to the reporting of amounts reclassified out of accumulated other comprehensive income. This guidance further updates guidance issued in 2011 increasing the prominence of items reported in other comprehensive income and facilitating the convergence of U.S. GAAP and International Financial Reporting Standards (“IFRS”). The guidance issued in 2013 requires an entity to provide information about the items reclassified out of other comprehensive income by component. This guidance is effective during interim and annual periods beginning after December 15, 2012, and is to be applied retrospectively. The Company adopted this guidance in the first quarter of 2013. Adoption of this guidance did not have a significant impact on the Company’s consolidated financial statements.
In December 2011, the FASB issued accounting guidance regarding disclosures about offsetting assets and liabilities. The scope of this accounting guidance was further clarified by the FASB on January 1, 2013. This guidance affects all entities that have financial instruments and derivative instruments that are either (1) offset in accordance with U.S. GAAP or (2) subject to an enforceable master netting arrangement or similar agreement. This information will enable users of an entity’s financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position, including the effect or potential effect of rights of setoff associated with certain financial instruments and derivative instruments in the scope of this guidance. The Company adopted this guidance in the first quarter of 2013 and provided the disclosures required by those amendments retrospectively for all comparative periods presented. Adoption of this guidance did not have a significant impact on the Company’s consolidated financial statements.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Acquisitions	'
	NOTE 2—ACQUISITIONS
	On May 31, 2013, the Company completed its acquisition of Somerset Hills Bancorp (“Somerset Hills”), a bank holding company headquartered in Bernardsville, New Jersey. Somerset Hills was the parent of Somerset Hills Bank, Sullivan Financial Services, Inc., and Somerset Hills Investment Holdings, Inc. This acquisition enables the Company to expand into Somerset and Union counties, and broaden its presence in Morris County. Effective as of the close of business on May 31, 2013, Somerset Hills Bancorp merged into the Company, and Somerset Hills Bank merged into Lakeland Bank. The Merger Agreement provided that the shareholders of Somerset Hills Bancorp would receive, at their election, for each outstanding share of Somerset Hills Bancorp common stock that they own at the effective time of the merger, either 1.1962 shares of Lakeland Bancorp common stock or $12.00 in cash, subject to proration as described in the Merger Agreement, so that 90% of the aggregate merger consideration was shares of Lakeland Bancorp common stock and 10% was cash. Lakeland Bancorp issued an aggregate of 5,794,079 shares of its common stock in the merger, and also assumed outstanding Somerset Hills Bancorp stock options (which were converted into options to purchase Lakeland Bancorp common stock). Lakeland Bancorp paid $6.5 million in cash in the transaction.
	The acquisition was accounted for under the acquisition method of accounting and accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at their estimated fair values as of the acquisition date. Somerset Hills’ assets were recorded at their preliminary estimated fair values as of May 31, 2013 and Somerset Hills’ results of operations have been included in the Company’s Consolidated Statements of Income since that date.
	The assets acquired and liabilities assumed in the acquisition were recorded at their estimated fair values based on management’s best estimates using information available at the date of the acquisition, including the use of a third party valuation specialist. The fair values are preliminary estimates and subject to adjustment for up to one year after the closing date of the acquisition. The following table summarizes the estimated fair value of the acquired assets and liabilities (in thousands).
	Consideration Paid
	Lakeland Bancorp stock issued	$	57,419
	Cash Payment		6,460
	Fair value of Somerset Hills stock options converted to Lakeland Bancorp stock options		1,500
	Total Consideration Paid	$	65,379
	Recognized amounts of identifiable assets and liabilities assumed at fair value
	Cash and cash equivalents	$	80,776
	Securities available for sale		1,777
	Securities held to maturity		8,686
	Federal Home Loan Bank stock		493
	Loans and leases		243,927
	Loans held for sale		2,532
	Premises and equipment		5,214
	Identifiable intangible assets		2,712
	Accrued interest receivable and other assets		9,946
	Deposits		(311,801	)
	Other liabilities		(1,745	)
	Total identifiable assets	$	42,517
	Goodwill	$	22,862
	Loans acquired in the Somerset Hills acquisition were recorded at fair value and subsequently accounted for in accordance with ASC Topic 310, and there was no carryover related allowance for loan and lease losses. The fair values of loans acquired from Somerset Hills were estimated using cash flow projections based on the remaining maturity and repricing terms. Cash flows were adjusted for estimated future credit losses and the rate of prepayments. Projected cash flows were then discounted to present value using a risk-adjusted market rate for similar loans.
	The following is a summary of the loans acquired in the Somerset Hills acquisition as of the closing date.
	(in thousands)	Acquired			Acquired		Total
		Credit			Non-		Acquired
		Impaired			Credit		Loans
		Loans			Impaired
					Loans
	Contractually required principal and interest at acquisition	$	4,507		$	352,148	$	356,655
	Contractual cash flows not expected to be collected (non-accretable difference)		2,541			—		2,541
	Expected cash flows at acquisition	$	1,966		$	352,148	$	354,114
	Interest component of expected cash flows (accretable difference)		322			107,333		107,655
	Fair value of acquired loans, including mortgages held for sale	$	1,644		$	244,815	$	246,459
	The core deposit intangible totaled $2.7 million and is being estimated over its estimated useful life of approximately 10 years using an accelerated method. The goodwill will be evaluated annually for impairment. The goodwill is not deductible for tax purposes.
	The fair values of deposit liabilities with no stated maturities such as checking, money market and savings accounts, were assumed to equal the carrying amounts since these deposits are payable on demand. The fair values of certificates of deposits and IRAs represent the present value of contractual cash flows discounted at market rates for similar certificates of deposit.
	Direct costs related to the acquisition were expensed as incurred. During 2013, the Company incurred $2.8 million, of merger and acquisition integration-related expenses, which have been separately reflected in the Company’s Consolidated Statements of Operations.
	Supplemental Pro Forma Financial Information
	The following table presents financial information regarding the former Somerset Hills operations included in our Consolidated Statements of Income from the date of the acquisition (May 31, 2013) through December 31, 2013 under the column “Actual from acquisition date through December 31, 2013.” In addition, the table provides unaudited condensed pro forma financial information assuming that the Somerset Hills acquisition had been completed as of January 1, 2013, for the year ended December 31, 2013 and as of January 1, 2012 for the year ended December 31, 2012. The table below has been prepared for comparative purposes only and is not necessarily indicative of the actual results that would have been attained had the acquisition occurred as of the beginning of the periods presented, nor is it indicative of future results. Furthermore, the unaudited proforma information does not reflect management’s estimate of any revenue-enhancing opportunities nor anticipated cost savings or the impact of conforming certain accounting policies of the acquired company to the Company’s policies that may have occurred as a result of the integration and consolidation of Somerset Hills’ operations. The pro forma information shown reflects adjustments related to certain purchase accounting fair value adjustments; amortization of core deposit and other intangibles; and related income tax effects.
	(in thousands)	Actual from			(unaudited)		(unaudited)
		acquisition to			Pro-forma		Pro-forma
		December 31, 2013			December  31, 2013		December  31, 2012
	Net interest income	$	6,077		$	109,313	$	107,402
	Noninterest income		889			22,096		21,753
	Noninterest expense		3,796			80,731		77,340
	Net income		2,116			27,828		24,277
	Earnings per share:
	Fully diluted				$	0.78	$	0.73
	Core Deposit Intangible
	As stated above, the Company recorded $2.7 million in core deposit intangible for the Somerset Hills acquisition. Year-to-date, it has amortized $288,000 in core deposit intangible. The estimated future amortization expense for each of the succeeding five years ended December 31 is as follows (dollars in thousands):
	For the year ended:
	2014	$	464
	2015		415
	2016		366
	2017		316
	2018		267

Investment_Securities

Investment Securities	12 Months Ended
	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]	'
Investment Securities	'
	NOTE 3—INVESTMENT SECURITIES
	The amortized cost, gross unrealized gains and losses, and the fair value of the Company’s available for sale and held to maturity securities are as follows:
	AVAILABLE FOR SALE		December 31, 2013											December 31, 2012
			Amortized			Gross			Gross			Fair		Amortized		Gross		Gross			Fair
			Cost			Unrealized			Unrealized			Value		Cost		Unrealized		Unrealized			Value
						Gains			Losses							Gains		Losses
			(in thousands)											(in thousands)
	U.S. treasury and U.S. government agencies		$	72,828		$	—		$	(2,663	)	$	70,165	$	86,002	$	577	$	(8	)	$	86,571
	Mortgage-backed securities, residential			310,088			1,752			(7,338	)		304,502		235,052		5,086		(579	)		239,559
	Obligations of states and political subdivisions			36,482			914			(523	)		36,873		36,848		1,832		(60	)		38,620
	Other debt securities			3,541			37			(158	)		3,420		13,576		189		(321	)		13,444
	Equity securities			15,433			1,097			(384	)		16,146		14,984		608		(76	)		15,516
			$	438,372		$	3,800		$	(11,066	)	$	431,106	$	386,462	$	8,292	$	(1,044	)	$	393,710
	HELD TO MATURITY		December 31, 2013											December 31, 2012
			Amortized			Gross			Gross			Fair		Amortized		Gross		Gross			Fair
			Cost			Unrealized			Unrealized			Value		Cost		Unrealized		Unrealized			Value
						Gains			Losses							Gains		Losses
			(in thousands)											(in thousands)
	U.S. government agencies		$	19,732		$	3		$	(576	)	$	19,159	$	16,089	$	385	$	—		$	16,474
	Mortgage-backed securities, residential			34,596			524			(1,025	)		34,095		39,065		1,313		(27	)		40,351
	Mortgage-backed securities, multifamily			2,355			—			(166	)		2,189		1,421		—		(13	)		1,408
	Obligations of states and political subdivisions			43,521			495			(770	)		43,246		38,801		1,068		(68	)		39,801
	Other debt securities			1,540			165			—			1,705		1,549		201		—			1,750
			$	101,744		$	1,187		$	(2,537	)	$	100,394	$	96,925	$	2,967	$	(108	)	$	99,784
	The following table lists contractual maturities of investment securities classified as available for sale and held to maturity. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			December 31, 2013
			Available for Sale						Held to Maturity
			Amortized			Fair			Amortized			Fair
			Cost			Value			Cost			Value
			(in thousands)
	Due in one year or less		$	3,946		$	3,984		$	7,246		$	7,288
	Due after one year through five years			37,961			37,969			18,022			18,519
	Due after five years through ten years			68,141			66,023			32,521			31,635
	Due after ten years			2,803			2,482			7,004			6,668
				112,851			110,458			64,793			64,110
	Mortgage-backed securities			310,088			304,502			36,951			36,284
	Equity securities			15,433			16,146			—			—
	Total securities		$	438,372		$	431,106		$	101,744		$	100,394
	The following table shows proceeds from sales of securities, gross gains and gross losses on sales and calls of securities for the periods indicated:
			Years ended December 31,
			2013			2012			2011
			(in thousands)
	Sale proceeds		$	64,020		$	97,824		$	92,409
	Gross gains			893			1,364			1,285
	Gross losses			(54	)		(315	)		(56	)
	Gains or losses on sales of securities are based on the net proceeds and the adjusted carrying amount of the securities sold using the specific identification method.
	Securities with a carrying value of approximately $324.8 million and $328.4 million at December 31, 2013 and 2012, respectively, were pledged to secure public deposits and for other purposes required by applicable laws and regulations.
	The following table indicates the length of time individual securities have been in a continuous unrealized loss position at December 31, 2013 and 2012:
	December 31, 2013		Less than 12 months						12 months or longer					Total
	AVAILABLE FOR SALE		Fair			Unrealized			Fair			Unrealized		Number of		Fair		Unrealized
			value			Losses			value			Losses		securities		value		Losses
									(dollars in thousands)
	U.S. treasury and U.S. government agencies		$	70,165		$	2,663		$	—		$	—		16	$	70,165	$	2,663
	Mortgage-backed securities, residential			177,262			6,730			10,724			608		51		187,986		7,338
	Obligations of states and political subdivisions			8,500			328			2,087			195		21		10,587		523
	Other debt securities			—			—			805			158		1		805		158
	Equity securities			—			—			10,215			384		3		10,215		384
			$	255,927		$	9,721		$	23,831		$	1,345		92	$	279,758	$	11,066
	HELD TO MATURITY
	U.S. government agencies		$	14,153		$	576		$	—		$	—		5	$	14,153	$	576
	Mortgage-backed securities, residential		$	22,939		$	889		$	1,097		$	136		11	$	24,036	$	1,025
	Mortgage-backed securities, multifamily			895			99			1,294			67		2		2,189		166
	Obligations of states and political subdivisions			17,826			607			1,456			163		51		19,282		770
		$	55,813		$	2,171		$	3,847		$	366		69	$	59,660	$	2,537
December 31, 2012		Less than 12 months						12 months or longer					Total
AVAILABLE FOR SALE		Fair			Unrealized			Fair			Unrealized		Number of		Fair		Unrealized
		value			Losses			value			Losses		securities		value		Losses
		(dollars in thousands)
U.S. government agencies		$	3,992		$	8		$	—		$	—		1	$	3,992	$	8
Mortgage-backed securities, residential			30,359			572			3,239			7		10		33,598		579
Obligations of states and political subdivisions			2,825			60			—			—		7		2,825		60
Other debt securities			—			—			5,661			321		2		5,661		321
Equity securities			4,621			76			—			—		2		4,621		76
		$	41,797		$	716		$	8,900		$	328		22	$	50,697	$	1,044
HELD TO MATURITY
Mortgage-backed securities, residential		$	1,239		$	27		$	—		$	—		1	$	1,239	$	27
Mortgage-backed securities, multifamily			1,408			13			—			—		1	$	1,408		13
Obligations of states and political subdivisions			3,705			63			371			5		10		4,076		68
		$	6,352		$	103		$	371		$	5		12	$	6,723	$	108
Management has evaluated the securities in the above table and has concluded that none of the securities with unrealized losses has impairments that are other-than-temporary. Fair value below cost is solely due to interest rate movements and is deemed temporary.
Investment securities, including the mortgage backed securities and corporate securities, are evaluated on a periodic basis to determine if factors are identified that would require further analysis. In evaluating the Company’s securities, management considers the following items:
	•		The Company’s ability and intent to hold the securities, including an evaluation of the need to sell the security to meet certain liquidity measures, or whether the Company has sufficient levels of cash to hold the identified security in order to recover the entire amortized cost of the security;
	•		The financial condition of the underlying issuer;
	•		The credit ratings of the underlying issuer and if any changes in the credit rating have occurred;
	•		The length of time the security’s fair value has been less than amortized cost; and
	•		Adverse conditions related to the security or its issuer if the issuer has failed to make scheduled payments or other factors.
If the above factors indicate the additional analysis is required, management will consider the results of discounted cash flow analysis.
As of December 31, 2013, the equity securities include investments in other financial institutions for market appreciation purposes. These equities had a net amortized cost of $2.2 million and market value of $3.2 million as of December 31, 2013.
As of December 31, 2013, equity securities also included $12.9 million in investment funds that do not have a quoted market price but use net asset value per share or its equivalent to measure fair value.
The funds include $2.9 million in funds that are primarily invested in community development loans that are guaranteed by the Small Business Administration (SBA). Because the funds are primarily guaranteed by the federal government there are minimal changes in market value between accounting periods. These funds can be redeemed within 60 days notice at the net asset value less unpaid management fees with the approval of the fund manager. As of December 31, 2013, the net amortized cost equaled the market value of the investment. There are no unfunded commitments related to this investment.
The funds also include $10.3 million in funds that are invested in government guaranteed loans, mortgage-backed securities, small business loans and other instruments supporting affordable housing and economic development. The Company may redeem these funds at the net asset value calculated at the end of the current business day less any unpaid management fees. As of December 31, 2013, the amortized cost of these securities was $10.3 million and the fair value was $10.0 million. There are no restrictions on redemptions for the holdings in these investments other than the notice required by the fund manager. There are no unfunded commitments related to this investment.

Loans_and_Leases_and_Other_Rea

Loans and Leases and Other Real Estate	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Loans and Leases and Other Real Estate	'
	NOTE 4—LOANS AND LEASES AND OTHER REAL ESTATE
	The following sets forth the composition of Lakeland’s loan and lease portfolio for the years ended December 31, 2013 and 2012:
			December 31,
			2013			2012
			(in thousands)
	Commercial, secured by real estate		$	1,389,861		$	1,125,137
	Commerical, industrial and other			213,808			216,129
	Leases			41,332			26,781
	Real estate-residential mortgage			432,831			423,262
	Real estate-construction			53,119			46,272
	Home equity and consumer			339,338			309,626
	Total loans and leases			2,470,289			2,147,207
	Less deferred fees			(1,273	)		(364	)
	Loans and leases, net of deferred fees		$	2,469,016		$	2,146,843
	As of December 31, 2013 and 2012, Home Equity and Consumer loans included overdraft deposit balances of $590,000 and $532,000, respectively. At December 31, 2013 and December 31, 2012, Lakeland had $263.1 million and $203.1 million in residential loans pledged for potential borrowings at the Federal Home Loan Bank of New York (FHLB).
	The carrying value of loans acquired and accounted for in accordance with ASC Subtopic 310-30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality,” was $1.7 million at December 31, 2013, which was substantially the same as the balance at the acquisition date of May 31, 2013. Under ASC Subtopic 310-30, loans may be aggregated and accounted for as pools of loans if the loans being aggregated have common risk characteristics. Lakeland elected to account for the loans with evidence of credit deterioration individually rather than aggregate them into pools. The difference between the undiscounted cash flows expected at acquisition and the investment in the acquired loans, or the “accretable yield,” is recognized as interest income utilizing the level-yield method over the life of each loan. Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition, or the “non-accretable difference,” are not recognized as a yield adjustment, as a loss accrual or as a valuation allowance.
	Increases in expected cash flows subsequent to the acquisition are recognized prospectively through an adjustment of the yield on the loans over the remaining life, while decreases in expected cash flows are recognized as impairment through a loss provision and an increase in the allowance for loan losses. Valuation allowances (recognized in the allowance for loan losses) on these impaired loans reflect only losses incurred after the acquisition (representing all cash flows that were expected at acquisition but currently are not expected to be received).
	There was credit deterioration related to one loan between May 31, 2013 (the “acquisition date”) and December 31, 2013. As of December 31, 2013, Lakeland has evaluated this loan for impairment, recognizing a valuation allowance in the allowance for loan and lease losses. Lakeland recognized $46,000 of interest income on the loans acquired.
	Portfolio Segments
	Lakeland currently manages its credit products and the respective exposure to credit losses (credit risk) by the following specific portfolio segments which are levels at which Lakeland develops and documents its systematic methodology to determine the allowance for loan and lease losses attributable to each respective portfolio segment. These segments are:
		•		Commercial, secured by real estate—consists of commercial mortgage loans secured by owner occupied properties and non-owner occupied properties. The loans secured by owner occupied properties involve a variety of property types to conduct the borrower’s operations. The primary source of repayment for this type of loan is the cash flow from the business and is based upon the borrower’s financial health and the ability of the borrower and the business to repay. The loans secured by non-owner occupied properties involve investment properties for warehouse, retail, office space, etc., with a history of occupancy and cash flow. This commercial real estate category contains mortgage loans to the developers and owners of commercial real estate where the borrower intends to operate or sell the property at a profit and use the income stream or proceeds from the sale(s) to repay the loan.
		•		Commercial, industrial and other—are loans made to provide funds for equipment and general corporate needs. Repayment of a loan primarily uses the funds obtained from the operation of the borrower’s business. Commercial loans also include lines of credit that are utilized to finance a borrower’s short-term credit needs and/or to finance a percentage of eligible receivables and inventory.
		•		Leases—includes a small portfolio of equipment leases, which consists of leases primarily for essential equipment used by small to medium sized businesses.
		•		Real estate—residential mortgage –contains permanent mortgage loans principally to consumers secured by residential real estate. Residential real estate loans are evaluated for the adequacy of repayment sources at the time of approval, based upon measures including credit scores, debt-to-income ratios, and collateral values. Loans may be either conforming or non-conforming.
		•		Real estate—construction—construction loans, as defined, are intended to finance the construction of commercial properties and include loans for the acquisition and development of land. Construction loans represent a higher degree of risk than permanent real estate loans and may be affected by a variety of factors such as the borrower’s ability to control costs and adhere to time schedules and the risk that constructed units may not be absorbed by the market within the anticipated time frame or at the anticipated price. The loan commitment on these loans often includes an interest reserve that allows the lender to periodically advance loan funds to pay interest charges on the outstanding balance of the loan.
		•		Home Equity and consumer—includes primarily home equity loans and lines, installment loans, personal lines of credit and automobile loans. The home equity category consists mainly of loans and revolving lines of credit to consumers which are secured by residential real estate. These loans are typically secured with second mortgages on the homes, although many are secured with first mortgages. Other consumer loans include installment loans used by customers to purchase automobiles, boats and recreational vehicles.
	Non-accrual and Past Due Loans
	The following schedule sets forth certain information regarding Lakeland’s non-accrual loans and leases, its other real estate owned and other repossessed assets, and accruing troubled debt restructurings:
			At December 31,
	(in thousands)		2013			2012
	Commercial, secured by real estate		$	7,697		$	10,511
	Commercial, industrial and other			88			1,476
	Leases			—			32
	Real estate—residential mortgage			6,141			8,733
	Real estate—construction			831			4,031
	Home equity and consumer			2,175			3,197
	Total non-accrual loans and leases			16,932			27,980
	Other real estate and other repossessed assets			520			529
	TOTAL NON-PERFORMING ASSETS		$	17,452		$	28,509
	Troubled debt restructurings, still accruing		$	10,289		$	7,336
	Non-accrual loans included $2.3 million and $3.4 million of troubled debt restructurings for the years ended December 31, 2013 and 2012, respectively.
	An age analysis of past due loans, segregated by class of loans as of December 31, 2013 and 2012 is as follows:
	December 31, 2013		30-59 Days			60-89 Days			Greater			Total			Current			Total			Recorded
			Past Due			Past Due			Than			Past Due						Loans			Investment  greater
									89 Days									and Leases			than 89 Days and
																					still accruing
			(in thousands)
	Commercial, secured by real estate		$	7,355		$	5,438		$	6,059		$	18,852		$	1,371,009		$	1,389,861		$	697
	Commercial, industrial and other			482			159			20			661			213,147			213,808			—
	Leases			77			179			—			256			41,076			41,332			—
	Real estate—residential mortgage			5,792			1,306			5,365			12,463			420,368			432,831			414
	Real estate—construction			—			—			831			831			52,288			53,119			—
	Home equity and consumer			1,776			533			2,884			5,193			334,145			339,338			886
			$	15,482		$	7,615		$	15,159		$	38,256		$	2,432,033		$	2,470,289		$	1,997
	December 31, 2012		30-59 Days			60-89 Days			Greater			Total			Current			Total			Recorded
			Past Due			Past Due			Than			Past Due						Loans			Investment  greater
									89 Days									and Leases			than 89 Days and
																					still accruing
			(in thousands)
	Commercial, secured by real estate		$	3,831		$	2,308		$	10,511		$	16,650		$	1,108,487		$	1,125,137		$	—
	Commercial, industrial and other			400			171			1,476			2,047			214,082			216,129			—
	Leases			367			36			32			435			26,346			26,781			—
	Real estate—residential mortgage			2,370			821			10,012			13,203			410,059			423,262			1,279
Real estate—construction			1,100			—			4,031			5,131			41,141			46,272			—
Home equity and consumer			2,479			363			3,355			6,197			303,429			309,626			158
		$	10,547		$	3,699		$	29,417		$	43,663		$	2,103,544		$	2,147,207		$	1,437
Impaired Loans
Lakeland’s policy regarding impaired loans is discussed in Note 1—Summary of Accounting Policies—Loans and Leases and Allowance for Loan and Lease Losses. In 2013, Lakeland increased its threshold for groups of impaired loans to group in homogenous pools from $250,000 to $500,000. As a result, $2.0 million in loans were included in loans that had a specific allowance as of December 31, 2013, and the specific allowance on these loans was $205,000. Impaired loans for the year ended December 31, 2013, 2012 and 2011 are as follows:
December 31, 2013		Recorded			Contractual			Specific			Interest			Average
		Investment in			Unpaid			Allowance			Income			Investment in
		Impaired loans			Principal						Recognized			Impaired loans
					Balance
		(in thousands)
Loans without specific allowance:
Commercial, secured by real estate		$	8,223		$	9,656		$	—		$	198		$	8,853
Commercial, industrial and other			4,020			4,118			—			189			4,333
Leases			—			—			—			—			—
Real estate-residential mortgage			617			672			—			—			622
Real estate-construction			501			2,411			—			—			2,111
Home equity and consumer			17			17			—			1			17
Loans with specific allowance:
Commercial, secured by real estate			10,152			10,217			739			442			9,727
Commercial, industrial and other			155			155			31			5			396
Leases			—			—			—			—			—
Real estate-residential mortgage			—			—			—			—			—
Real estate-construction			—			—			—			—			—
Home equity and consumer			934			936			140			42			907
Total:
Commercial, secured by real estate		$	18,375		$	19,873		$	739		$	640		$	18,580
Commercial, industrial and other			4,175			4,273			31			194			4,729
Leases			—			—			—			—			—
Real estate—residential mortgage			617			672			—			—			622
Real estate-construction			501			2,411			—			—			2,111
Home equity and consumer			951			953			140			43			924
		$	24,619		$	28,182		$	910		$	877		$	26,966
December 31, 2012		Recorded			Contractual			Specific			Interest			Average
		Investment in			Unpaid			Allowance			Income			Investment in
		Impaired loans			Principal						Recognized			Impaired loans
					Balance
		(in thousands)
Loans without specific allowance:
Commercial, secured by real estate		$	16,458		$	21,665		$	—		$	495		$	18,301
Commercial, industrial and other			4,896			4,932			—			116			3,838
Leases			—			—			—			—			—
Real estate-residential mortgage			360			360			—			6			385
Real estate-construction			3,332			4,433			—			—			5,533
Home equity and consumer			369			369			—			1			360
Loans with specific allowance:
Commercial, secured by real estate			3,346			4,088			368			46			3,825
Commercial, industrial and other			808			871			219			1			769
Leases			—			—			—			—			—
Real estate-residential mortgage			288			288			43			4			374
Real estate-construction			698			1,085			97			—			1,445
Home equity and consumer			976			976			146			55			934
Total:
Commercial, secured by real estate		$	19,804		$	25,753		$	368		$	541		$	22,126
Commercial, industrial and other			5,704			5,803			219			117			4,607
Leases			—			—			—			—			—
Real estate—residential mortgage			648			648			43			10			759
Real estate-construction			4,030			5,518			97			—			6,978
Home equity and consumer			1,345			1,345			146			56			1,294
		$	31,531		$	39,067		$	873		$	724		$	35,764
December 31, 2011		Recorded			Contractual			Specific			Interest			Average
		Investment in			Unpaid			Allowance			Income			Investment in
		Impaired loans			Principal						Recognized			Impaired loans
					Balance
		(in thousands)
Loans without specific allowance:
Commercial, secured by real estate		$	19,648		$	24,922		$	—		$	332		$	14,792
Commercial, industrial and other			4,074			8,155			—			—			3,445
Leases, including leases held for sale			—			—			—			—			—
Real estate-residential mortgage			415			415			—			29			542
Real estate-construction			12,400			16,353			—			14			11,231
Home equity and consumer			400			485			—			1			14
Loans with specific allowance:
Commercial, secured by real estate			3,920			6,421			392			18			6,209
Commercial, industrial and other			534			647			172			—			768
Leases, including leases held for sale			—			—			—			—			—
Real estate-residential mortgage			561			570			75			19			332
Real estate-construction			244			518			24			—			333
Home equity and consumer			949			963			142			34			800
Total:
Commercial, secured by real estate		$	23,568		$	31,343		$	392		$	350		$	21,001
Commercial, industrial and other			4,608			8,802			172			—			4,213
Leases, including leases held for sale			—			—			—			—			—
Real estate—residential mortgage			976			985			75			48			874
Real estate-construction			12,644			16,871			24			14			11,564
Home equity and consumer			1,349			1,448			142			35			814
		$	43,145		$	59,449		$	805		$	447		$	38,466
Interest which would have been accrued on impaired loans and leases during 2013, 2012 and 2011 was $2.2
million, $2.8 million and $2.9 million, respectively.
Credit Quality Indicators
The class of loans are determined by internal risk rating. Management closely and continually monitors the quality of its loans and leases and assesses the quantitative and qualitative risks arising from the credit quality of its loans and leases. It is the policy of Lakeland to require that a Credit Risk Rating be assigned to all commercial loans and loan commitments. The Credit Risk Rating System has been developed by management to provide a methodology to be used by Loan Officers, department heads and Senior Management in identifying various levels of credit risk that exist within Lakeland’s loan portfolios. The risk rating system assists Senior Management in evaluating Lakeland’s loan portfolio, analyzing trends, and determining the proper level of required reserves to be recommended to the Board. In assigning risk ratings, management considers, among other things, a borrower’s debt service coverage, earnings strength, loan to value ratios, industry conditions and economic conditions. Management categorizes loans and commitments into a one (1) to nine (9) numerical structure with rating 1 being the strongest rating and rating 9 being the weakest. Ratings 1 through 5W are considered ‘Pass’ ratings.
The following table shows Lakeland’s commercial loan portfolio as of December 31, 2013 and 2012, by the risk ratings discussed above (in thousands):
December 31, 2013		Commercial,			Commercial,
		secured by			Industrial			Real estate-
Risk Rating		real estate			and other			construction
1		$	—		$	952		$	—
2			—			12,964			—
3			70,811			9,263			—
4			442,933			60,002			1,178
5			754,275			85,939			48,243
5W—Watch			38,893			12,278			—
6—Other Assets Especially Mentioned			27,640			9,596			1,245
7—Substandard			55,309			22,814			2,453
8—Doubtful			—			—			—
9—Loss			—			—			—
Total		$	1,389,861		$	213,808		$	53,119
31-Dec-12		Commercial,			Commercial,
		secured by			Industrial			Real estate-
Risk Rating		real estate			and other			construction
1		$	—		$	996		$	—
2			—			12,899			—
3			44,448			15,676			—
4			350,145			62,676			795
5			623,912			88,033			34,682
5W—Watch			43,515			13,261			—
6—Other Assets Especially Mentioned			21,132			2,845			6,535
7—Substandard			41,817			19,743			4,260
8—Doubtful			168			—			—
9—Loss			—			—			—
Total		$	1,125,137		$	216,129		$	46,272
This table does not include consumer or residential loans or leases because they are evaluated on their payment status.
Allowance for Loan and Lease Losses
The following table details activity in the allowance for loan and lease losses by portfolio segment and the related recorded investment in loans and leases for the years ended December 31, 2013, 2012 and 2011:
12/31/13		Commercial,			Commercial,			Leases			Real estate-			Real estate-			Home			Unallocated			Total
		secured by			industrial						residential			Construction			equity and
		real estate			and other						mortgage						consumer
		(in thousands)
Allowance for Loan and Lease Losses:
Beginning Balance		$	16,258		$	5,103		$	578		$	3,568		$	587		$	2,837		$	—		$	28,931
Charge-offs			(2,026	)		(1,324	)		(206	)		(1,257	)		(3,854	)		(1,624	)		—			(10,291	)
Recoveries			1,061			260			121			99			14			283			—			1,838
Provision			(830	)		1,292			11			804			3,795			1,241			3,030			9,343
Ending Balance		$	14,463		$	5,331		$	504		$	3,214		$	542		$	2,737		$	3,030		$	29,821
Ending Balance: Individually evaluated for impairment		$	739		$	31			—		$	—		$	—		$	140		$	—		$	910
Ending Balance: Collectively evaluated for impairment			13,724			5,300			504			3,214			542			2,597			3,030		$	28,911
Ending Balance: Loans acquired with deteriorated credit quality			—			—			—			—			—			—			—			—
Ending Balance		$	14,463		$	5,331		$	504		$	3,214		$	542		$	2,737		$	3,030		$	29,821
Loans and Leases:
Ending Balance: Individually evaluated for impairment		$	18,375		$	4,175			—		$	617		$	501		$	951		$	—		$	24,619
Ending Balance: Collectively evaluated for impairment			1,371,486			209,633			41,332			432,214			52,618			337,976			—		$	2,445,259
Ending Balance: Loans acquired with deteriorated credit quality			—			—			—			—			—			411			—		$	411
Ending Balance(1)		$	1,389,861		$	213,808		$	41,332		$	432,831		$	53,119		$	339,338		$	—		$	2,470,289
-1	Excludes deferred fees
12/31/12		Commercial,			Commercial,			Leases			Real estate-			Real estate-			Home			Total
		secured by			industrial						residential			Construction			equity and
		real estate			and other						mortgage						consumer
		(in thousands)
Allowance for Loan and Lease Losses:
Beginning Balance		$	16,618		$	3,477		$	688		$	3,077		$	1,424		$	3,132		$	28,416
Charge-offs			(7,287	)		(949	)		(999	)		(1,822	)		(2,888	)		(2,074	)		(16,019	)
Recoveries			280			428			504			66			43			306			1,627
Provision			6,647			2,147			385			2,247			2,008			1,473			14,907
Ending Balance		$	16,258		$	5,103		$	578		$	3,568		$	587		$	2,837		$	28,931
Ending Balance: Individually evaluated for impairment		$	368		$	219		$	—		$	43		$	97		$	146		$	873
Ending Balance: Collectively evaluated for impairment			15,890			4,884			578			3,525			490			2,691		$	28,058
Ending Balance		$	16,258		$	5,103		$	578		$	3,568		$	587		$	2,837		$	28,931
Loans and Leases:
Ending Balance: Individually evaluated for impairment		$	19,804		$	5,704		$	—		$	648		$	4,030		$	1,345		$	31,531
Ending Balance: Collectively evaluated for impairment			1,105,333			210,425			26,781			422,614			42,242			308,281		$	2,115,676
Ending Balance(1)		$	1,125,137		$	216,129		$	26,781		$	423,262		$	46,272		$	309,626		$	2,147,207
-1	Excludes deferred costs
12/31/11		Commercial,			Commercial,			Leases			Real estate-			Real estate-			Home			Total
		secured by			industrial						residential			Construction			equity and
		real estate			and other						mortgage						consumer
		(in thousands)
Allowance for Loan and Lease Losses:
Beginning Balance		$	11,366		$	5,113		$	3,477		$	2,628		$	2,176		$	2,571		$	27,331
Charge-offs			(5,352	)		(5,249	)		(2,858	)		(1,772	)		(3,636	)		(3,010	)		(21,877	)
Recoveries			2,084			439			1,206			32			67			318			4,146
Provision			8,520			3,174			(1,137	)		2,189			2,817			3,253			18,816
Ending Balance		$	16,618		$	3,477		$	688		$	3,077		$	1,424		$	3,132		$	28,416
Ending Balance: Individually evaluated for impairment		$	392		$	172		$	—		$	75		$	24		$	142		$	805
Ending Balance: Collectively evaluated for impairment			16,226			3,305			688			3,002			1,400			2,990		$	27,611
Ending Balance		$	16,618		$	3,477		$	688		$	3,077		$	1,424		$	3,132		$	28,416
Loans and Leases:
Ending Balance: Individually evaluated for impairment		$	23,568		$	4,608		$	—		$	976		$	12,644		$	1,349		$	43,145
Ending Balance: Collectively evaluated for impairment			989,414			205,307			28,879			405,246			66,494			302,841		$	1,998,181
Ending Balance(1)		$	1,012,982		$	209,915		$	28,879		$	406,222		$	79,138		$	304,190		$	2,041,326
-1	Excludes deferred costs
Lakeland also maintains a reserve for unfunded lending commitments which are included in other liabilities. This reserve was $1.2 million and $1.1 million at December 31, 2013 and December 31, 2012, respectively. Lakeland analyzes the adequacy of the reserve for unfunded lending commitments in conjunction with its analysis of the adequacy of the allowance for loan and lease losses. For more information on this analysis, see “Risk Elements” in Management’s Discussion and Analysis.
Troubled Debt Restructurings
Troubled debt restructurings are those loans where significant concessions have been made due to borrowers’ financial difficulties. Restructured loans typically involve a modification of terms such as a reduction of the stated interest rate, an extended moratorium of principal payments and/or an extension of the maturity date at a stated interest rate lower than the current market rate of a new loan with similar risk. Lakeland considers the potential losses on these loans as well as the remainder of its impaired loans when considering the adequacy of the allowance for loan losses.
The following table summarizes loans that have been restructured during the periods presented:
		For the year ended									For the year ended
		December 31, 2013									December 31, 2012
		Number of			Pre-			Post-			Number of			Pre-			Post-
		Contracts			Modification			Modification			Contracts			Modification			Modification
					Outstanding			Outstanding						Outstanding			Outstanding
					Recorded			Recorded						Recorded			Recorded
					Investment			Investment						Investment			Investment
		(Dollars in thousands)									(Dollars in thousands)
Troubled Debt Restructurings:
Commercial, secured by real estate			8		$	3,637		$	2,988			10		$	2,231		$	2,231
Commercial, industrial and other			1			127			121			6			4,421			4,421
Leases			—			—			—			—			—			—
Real estate—residential mortgage			1			179			179			—			—			—
Real estate—construction			—			—			—			—			—			—
Home equity and consumer			2			158			157			1			55			55
			12		$	4,101		$	3,445			17		$	6,707		$	6,707
The following table summarizes as of December 31, 2013 and 2012, loans that were restructured within the last 12 months that have subsequently defaulted:
		For the year ended						For the year ended
		December 31, 2013						December 31, 2012
		Number  of			Recorded			Number  of			Recorded
		Contracts			Investment			Contracts			Investment
		(Dollars in thousands)						(Dollars in thousands)
Defaulted Troubled Debt Restructurings:
Commercial, secured by real estate			—		$	—			2		$	272
Commercial, industrial and other			—			—			1			142
Leases			—			—			—			—
Real estate—residential mortgage			—			—			—			—
Real estate—construction			—			—			—			—
Home equity and consumer			1			147			—			—
			1		$	147			3		$	414
Related Party Loans
Lakeland has entered into lending transactions in the ordinary course of business with directors, executive officers, principal stockholders and affiliates of such persons on similar terms, including interest rates and collateral, as those prevailing for comparable transactions with other borrowers not related to Lakeland. At December 31, 2013, loans to these related parties amounted to $25.0 million. There were new loans of $9.6 million to related parties and repayments of $12.7 million from related parties in 2013.
Mortgages Held for Sale
Residential mortgages originated by the bank and held for sale in the secondary market are carried at the lower of cost or fair market value. Fair value is generally determined by the value of purchase commitments on individual loans. Losses are recorded as a valuation allowance and charged to earnings. As of December 31, 2013, Lakeland had $1.2 million in mortgages held for sale compared to no mortgages held for sale as of December 31, 2012.
Leases
Lakeland had no leases held for sale on December 31, 2013, 2012 and 2011. During the first quarter of 2011, management reclassified $1.5 million of leases held for sale to held for investment because management’s intent regarding these leases had changed. The following table shows the components of gains on leasing related assets for the periods presented:
		For the years ended
		December 31,
(in thousands)		2013			2012			2011
Gains on sales of leases		$	—		$	—		$	143
Realized gains on paid off leases			51			471			883
Gains (losses) on sales of other repossessed assets			12			4			(52	)
Total gains on leasing related assets		$	63		$	475		$	974
Gains (losses) on held for sale leasing assets are included in other income along with other miscellaneous leasing income typically recorded in Lakeland’s leasing business.
Future minimum lease payments of lease receivables are as follows (in thousands):
2014		$	14,387
2015			11,634
2016			8,255
2017			5,155
2018			1,716
thereafter			185
		$	41,332
Other Real Estate and Other Repossessed Assets
At December 31, 2013, Lakeland had other repossessed assets and other real estate owned of $54,000 and $466,000, respectively. At December 31, 2012, Lakeland had other repossessed assets and other real estate owned of $77,000 and $452,000, respectively. For the years ended December 31, 2013, 2012 and 2011, Lakeland had writedowns of $0, $0 and $230,000, respectively, on other real estate and other repossessed assets which are included in other real estate and repossessed asset expense in the Statement of Operations.

Premises_and_Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Premises and Equipment	'
	NOTE 5—PREMISES AND EQUIPMENT
		Estimated	December 31,
		useful lives	2013		2012
			(in thousands)
	Land	Indefinite	$	6,259	$	5,245
	Buildings and building improvements	10 to 50 years		34,607		30,818
	Leasehold improvements	10 to 25 years		9,997		8,405
	Furniture, fixtures and equipment	2 to 30 years		37,054		31,443
				87,917		75,911
	Less accumulated depreciation and amortization			50,769		42,631
			$	37,148	$	33,280
	Depreciation expense was $3.7 million, $3.1 million and $2.9 million for the years ended December 31, 2013, 2012 and 2011, respectively.

Time_Deposits

Time Deposits	12 Months Ended
	Dec. 31, 2013
Banking And Thrift [Abstract]	'
Time Deposits	'
	NOTE 6—TIME DEPOSITS
	At December 31, 2013, the schedule of maturities of certificates of deposit is as follows (in thousands):
	Year
	2014	$	214,479
	2015		46,981
	2016		14,823
	2017		17,974
	2018		1,136
	Thereafter		693
		$	296,086

Debt

Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt	'
	NOTE 7—DEBT
	Lines of Credit
	As a member of the Federal Home Loan Bank of New York (FHLB), Lakeland has the ability to borrow overnight based on the market value of collateral pledged. As of December 31, 2013 and 2012, there were no overnight borrowings from the FHLB. As of December 31, 2013, Lakeland also had overnight federal funds lines available for it to borrow up to $162.0 million. Lakeland had borrowed $50.0 million and $72.0 million against these lines as of December 31, 2013 and 2012, respectively. Lakeland may also borrow from the discount window of the Federal Reserve Bank of New York based on the market value of collateral pledged. Lakeland had no borrowings with the Federal Reserve Bank of New York as of December 31, 2013 or 2012.
	Federal Funds Purchased and Securities Sold Under Agreements to Repurchase
	Short-term borrowings at December 31, 2013 and 2012 consisted of short-term securities sold under agreements to repurchase and federal funds purchased. Securities underlying the agreements were under Lakeland’s control. The following tables summarize information relating to securities sold under agreements to repurchase and federal funds purchased for the years presented. For purposes of the tables, the average amount outstanding was calculated based on a daily average.
	Federal funds purchased:
		2013			2012			2011
		(dollars in thousands)
	Balance at December 31	$	50,000		$	72,000		$	28,000
	Interest rate at December 31		0.37	%		0.37	%		0.32	%
	Maximum amount outstanding at any month-end during the year	$	81,000		$	72,000		$	35,750
	Average amount outstanding during the year	$	8,424		$	15,147		$	6,674
	Weighted average interest rate during the year		0.34	%		0.35	%		0.41	%
	Securities sold under agreements to repurchase:
		2013			2012			2011
		(dollars in thousands)
	Balance at December 31	$	31,991		$	45,289		$	44,131
	Interest rate at December 31		0.02	%		0.05	%		0.09	%
	Maximum amount outstanding at any month-end during the year	$	48,315		$	49,863		$	60,818
	Average amount outstanding during the year	$	37,277		$	44,434		$	52,566
	Weighted average interest rate during the year		0.03	%		0.06	%		0.12	%
	Other Borrowings
	FHLB Debt
	At December 31, 2013, advances from the FHLB totaling $69.0 million will mature within one to five years and are reported as other borrowings. These advances are collateralized by certain securities and first mortgage loans. The advances had a weighted average interest rate of 1.47%. In the fourth quarter of 2013, Lakeland prepaid $6.0 million of its FHLB debt that had a weighted rate of 3.99% and incurred a prepayment penalty of $683,000.
	At December 31, 2012, Lakeland had advances from the FHLB totaling $25.0 million maturing within five to six years and reported as other borrowings. These advances were collateralized by certain securities and first mortgage loans. The advances had a weighted average interest rate of 3.73%. In the fourth quarter of 2012, Lakeland prepaid $10.0 million of its FHLB debt that had a weighted rate of 3.93% and incurred a prepayment penalty of $782,000.
	FHLB debt matures as follows (in thousands):
	2014	$	30,000
	2015		10,000
	2016		10,000
	2017		4,000
	2018		15,000
	Thereafter		—
		$	69,000
	Long-term Securities Sold Under Agreements to Repurchase
	At December 31, 2013, Lakeland had $50.0 million in long-term securities sold under agreements to repurchase compared to $60.0 million at December 31, 2012. These securities were able to be called at various dates starting in 2009. These advances are collateralized by certain securities. The advances had a weighted average interest rate of 2.51% and 2.59% on December 31, 2013 and December 31, 2012, respectively. During the first quarter of 2013, Lakeland prepaid $10.0 million of its long-term securities sold under agreements to repurchase that had a rate of 2.90% and incurred a prepayment penalty of $526,000. These long-term securities sold under agreements to repurchase mature as follows (in thousands):
	2014	$	—
	2015		—
	2016		10,000
	2017		10,000
	2018		10,000
	Thereafter		20,000
		$	50,000
	The above FHLB debt and long-term securities sold under agreements to repurchase are collateralized by certain securities. At times the market value of securities collateralizing our borrowings may decline due to changes in interest rates and may necessitate our lenders to issue a “margin call” which requires Lakeland to pledge additional securities to meet that margin call.
	Subordinated Debentures
	In May 2007, the Company issued $20.6 million of junior subordinated debentures due August 31, 2037 to Lakeland Bancorp Capital Trust IV, a Delaware business trust. The distribution rate on these securities was 6.61% for 5 years and floats at LIBOR plus 152 basis points thereafter. The debentures are the sole asset of the Trust. The Trust issued 20,000 shares of trust preferred securities, $1,000 face value, for total proceeds of $20.0 million. The Company’s obligations under the debentures and related documents, taken together, constitute a full, irrevocable and unconditional guarantee on a subordinated basis by the Company of the Trust’s obligations under the preferred securities. The preferred securities are callable by the Company on or after August 1, 2012, or earlier if the deduction of related interest for federal income taxes is prohibited, treatment as Tier I capital is no longer permitted, or certain other contingencies arise. The preferred securities must be redeemed upon maturity of the debentures in 2037.
	In December 2003, the Company issued $25.8 million of junior subordinated debentures due January 7, 2034 to Lakeland Bancorp Capital Trust III, a Delaware business trust. The distribution rate on these securities was 7.535% for 10 years and floats at LIBOR plus 285 basis points thereafter. The debentures are the sole asset of the Trust. The Trust issued 25,000 shares of trust preferred securities, $1,000 face value, for total proceeds of $25.0 million. The Company’s obligations under the debentures and related documents, taken together, constitute a full, irrevocable and unconditional guarantee on a subordinated basis by the Company of the Trust’s obligations under the preferred securities. The preferred securities are callable by the Company on or after January 7, 2009, or earlier if the deduction of related interest for federal income taxes is prohibited, treatment as Tier I capital is no longer permitted, or certain other contingencies arise. On October 7, 2012 the Company redeemed the $25.8 million in junior subordinated debentures. At the time of redemption the debentures had a coupon rate of 7.535% and were due on January 7, 2034. The capital and common securities issued by the Trust in December 2003 were also redeemed.
	In June 2003, the Company issued $10.3 million of junior subordinated debentures due July 7, 2033 to Lakeland Bancorp Capital Trust I, a Delaware business trust. The distribution rate on these securities was 6.20% for 7 years and floats at LIBOR plus 310 basis points thereafter. The debentures are the sole asset of the Trust. The Trust issued 10,000 shares of trust preferred securities, $1,000 face value, for total proceeds of $10.0 million. The Company’s obligations under the debentures and related documents, taken together, constitute a full, irrevocable and unconditional guarantee on a subordinated basis by the Company of the Trust’s obligations under the preferred securities. The preferred securities are callable by the Company on or after July 7, 2010, or earlier if the deduction of related interest for federal income taxes is prohibited, treatment as Tier I capital is no longer permitted, or certain other contingencies arise. On June 18, 2013, the Company acquired and extinguished $9.0 million of Lakeland Bancorp Capital Trust I debentures and recorded a $1.2 million gain on extinguishment of debt. The interest rate on this debenture floated at LIBOR plus 310 basis points and had a rate of 3.38% at the time of extinguishment. The Company redeemed the remaining $1.0 million in the fourth quarter of 2013 at par value.
	In June 2003, the Company also issued $20.6 million of junior subordinated debentures due June 30, 2033 to Lakeland Bancorp Capital Trust II, a Delaware business trust. The distribution rate on these securities was 5.71% for 5 years and floats at LIBOR plus 310 basis points thereafter. The debentures are the sole asset of the Trust. The Trust issued 20,000 shares of trust preferred securities, $1,000 face value, for total proceeds of $20.0 million. The Company’s obligations under the debentures and related documents, taken together, constitute a full, irrevocable and unconditional guarantee on a subordinated basis by the Company of the Trust’s obligations under the preferred securities. The preferred securities are callable by the Company on or after June 30, 2008, or earlier if the deduction of related interest for federal income taxes is prohibited, treatment as Tier I capital is no longer permitted, or certain other contingencies arise. The preferred securities must be redeemed upon maturity of the debentures in 2033.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Stockholders' Equity	'
	NOTE 8—STOCKHOLDERS’ EQUITY
	On May 31, 2013, the Company completed its acquisition of Somerset Hills Bancorp, a bank holding company headquartered in Bernardsville, New Jersey. Lakeland Bancorp issued an aggregate of 5,794,079 shares of its common stock in the merger, and also assumed outstanding Somerset Hills Bancorp stock options (which were converted into options to purchase Lakeland Bancorp common stock). Lakeland Bancorp paid $6.5 million in cash in the transaction.
	On September 4, 2012, the Company issued and sold an aggregate of 2,667,253 shares of common stock at a price of $9.65 per share pursuant to a takedown off of the Company’s shelf registration statement. The Company received net proceeds of $25.0 million which it used to repay $25.8 million in junior subordinated debentures on October 7, 2012. See Note 7 for further details.
	On March 19, 2012, the Company’s Board of Directors authorized a 5% stock dividend which was distributed on April 16, 2012, to holders of record as of March 30, 2012. On January 14, 2011, the Company’s Board of Directors authorized a 5% stock dividend which was distributed on February 16, 2011, to holders of record as of January 31, 2011.
	In February 2009, as part of the Troubled Asset Relief Program (“TARP”) Capital Purchase Program, the Company entered into a Purchase Agreement with the United States Department of the Treasury (the U.S. Treasury), pursuant to which the Company sold 59,000 shares of Fixed Rate Cumulative Perpetual Preferred Stock, Series A with a liquidation preference of $1,000 per share and a warrant to purchase 1,046,901 shares of the Company’s common stock, for $59.0 million in cash. The redemption of the preferred shares was completed in three transactions with 20,000 shares redeemed in August 2010, 20,000 shares redeemed in March 2011, and the remaining 19,000 shares redeemed in February 2012. The preferred shares paid an annual dividend of 5% per share during the period the shares were outstanding. The warrant was issued with an initial exercise price of $8.45 (adjusted for stock dividends) and a ten year term and was exercisable immediately, in whole or in part. The value of the warrant was allocated a portion of the $59.0 million in issuance proceeds. The allocation of this value was based on the relative fair value of the preferred shares and the warrant to the combined fair value. Accordingly, the value of the warrant was determined to be $3.3 million and recorded in common stock in the consolidated statements of condition. This non-cash amount was considered a discount to the preferred stock and to be amortized over a five year period using the interest method and accreted as a dividend recorded on the preferred shares. A portion of the unamortized discount was recognized in a charge to earnings on the date of the respective redemptions of the preferred shares. The warrant was included in the diluted average common shares outstanding except in periods for which its effects would be anti-dilutive. On February 29, 2012, the Company completed the redemption of the warrant for $2.8 million. The redemption of the warrant resulted in a reduction of common stock during the first quarter of 2012.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	NOTE 9—INCOME TAXES
	The components of income taxes are as follows:
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Current tax provision	$	12,286		$	9,520		$	8,540
	Deferred tax provision		164			576			172
	Total provision for income taxes	$	12,450		$	10,096		$	8,712
	The income tax provision reconciled to the income taxes that would have been computed at the statutory federal rate of 35% is as follows:
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Federal income tax, at statutory rates	$	13,097		$	11,143		$	9,999
	Increase (deduction) in taxes resulting from:
	Non-taxable interest income		(1,370	)		(1,296	)		(1,387	)
	State income tax, net of federal income tax effect		339			192			246
	Other, net		384			57			(146	)
	Provision for income taxes	$	12,450		$	10,096		$	8,712
	The net deferred tax asset consisted of the following:
		December 31,
		2013			2012
		(in thousands)
	Deferred tax assets:
	Allowance for loan and lease losses	$	12,688		$	12,271
	Share based compensation plans		553			356
	Purchase accounting fair market value adjustments		688			—
	Non-accrued interest		389			627
	Deferred compensation		1,671			1,357
	Other than temporary impairment loss on investment securities		255			374
	Unrealized losses on securities available for sale		2,620			—
	Unfunded pension benefits		20			298
	Other, net		771			590
	Deferred tax assets		19,655			15,873
	Deferred tax liabilities:
	Core deposit intangible from acquired companies		990			—
	Deferred loan costs		1,338			1,365
	Prepaid expenses		457			377
	Depreciation and amortization		1,514			1,172
	Deferred gain on securities		194			194
	Unrealized gains on securities available for sale		—			2,695
	Other		659			531
	Deferred tax liabilities		5,152			6,334
	Net deferred tax assets, included in other assets	$	14,503		$	9,539
	As a result of the acquisition of Somerset Hills, the Company recorded a net deferred tax asset of $93,000.
	The Company evaluates the realizability of its deferred tax assets by examining its earnings history and projected future earnings and by assessing whether it is more likely than not that carryforwards would not be realized. Based upon the majority of the Company’s deferred tax assets having no expiration date, the Company’s earnings history, and the projections of future earnings, the Company’s management believes that it is more likely than not that all of the Company’s deferred tax assets as of December 31, 2013 will be realized.
	A reconciliation of the beginning and ending amount of unrecognized tax benefits are as follows:
	(in thousands)	2013			2012
	Balance at January 1	$	168		$	252
	Additions for tax positions of prior years		12			22
	Reductions for tax positions resulting from lapse of statute of limitations		(52	)		(106	)
	Settlements		(17	)		—
	Balance at December 31	$	111		$	168
	The Company recognizes interest accrued and penalties related to unrecognized tax benefits in income tax expense for all periods presented. The Company had accrued approximately $19,000 and $19,000 for the payment of interest and penalties at December 31, 2013 and 2012, respectively.
	The Company is subject to U.S. federal income tax law as well as income tax of various state jurisdictions. Tax regulations within each jurisdiction are subject to the interpretation of the related tax laws and regulations and require significant judgment to apply. With few significant exceptions, the Company is no longer subject to U.S. federal examinations by tax authorities for the years before 2010 or to state and local examinations by tax authorities for the years before 2009.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	NOTE 10—EARNINGS PER SHARE
	The Company uses the two class method to compute earnings per common share. Participating securities include non-vested restricted stock. The following tables present the computation of basic and diluted earnings per share for the periods presented.
	Year ended December 31, 2013
		Income		Shares		Per share
		(numerator)		(denominator)		amount
		(in thousands, except per share amounts)
	Basic earnings per share
	Net income available to common shareholders	$	24,969		33,088	$	0.75
	Less: earnings allocated to participating securities		178				0
	Net income available to common shareholders	$	24,791		33,088	$	0.75
	Effect of dilutive securities
	Stock options and restricted stock		—		152		—
	Diluted earnings per share
	Net income available to common shareholders plus assumed conversions	$	24,791		33,240	$	0.75
	Options to purchase 341,276 shares of common stock at a weighted average of $12.51 per share were not included in the computation of diluted earnings per share because the option price and the grant date price were greater than the average market price during the period.
	Year ended December 31, 2012
		Income		Shares		Per share
		(numerator)		(denominator)		amount
		(in thousands, except per share amounts)
	Basic earnings per share
	Net income available to common shareholders	$	21,122		27,619	$	0.76
	Less: earnings allocated to participating securities		181				0
	Net income available to common shareholders	$	20,941		27,619	$	0.76
	Effect of dilutive securities
	Stock options and restricted stock		—		73		—
	Diluted earnings per share
	Net income available to common shareholders plus assumed conversions	$	20,941		27,692	$	0.76
	Options to purchase 448,137 shares of common stock at a weighted average of $12.56 per share were not included in the computation of diluted earnings per share because the option price and the grant date price were greater than the average market price during the period.
	Year ended December 31, 2011
		Income		Shares		Per share
		(numerator)		(denominator)		amount
		(in thousands, except per share amounts)
	Basic earnings per share
	Net income available to common shareholders	$	17,684		26,572	$	0.67
	Less: earnings allocated to participating securities		130				0.01
	Net income available to common shareholders	$	17,554		26,572	$	0.66
	Effect of dilutive securities
	Stock options and restricted stock		—		109		—
	Diluted earnings per share
	Net income available to common shareholders plus assumed conversions	$	17,554		26,681	$	0.66
	Options to purchase 598,477 shares of common stock and 19,893 shares of restricted stock at a weighted average of $12.57 and $11.52 per share, respectively, were not included in the computation of diluted earnings per share because the option exercise price and the grant date price were greater than the average market price during the period.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	NOTE 11—EMPLOYEE BENEFIT PLANS
	Profit Sharing Plan
	The Company has a profit sharing plan for all its eligible employees. The Company’s annual contribution to the plan is determined by its Board of Directors. Annual contributions are allocated to participants on a point basis with accumulated benefits payable at retirement, or, at the discretion of the plan committee, upon termination of employment. Contributions made by the Company were approximately $600,000 for 2013, $625,000 for 2012 and $675,000 for 2011.
	Salary Continuation Agreements
	The National Bank of Sussex County (NBSC) entered into a salary continuation agreement during 1996 with its former Chief Executive Officer (CEO) and its President which entitle them to certain payments upon their retirement. As part of the merger of the Company and NBSC’s parent (High Point Financial Corp.) in July 1999, Lakeland placed in trusts amounts equal to the present value of the amounts that would be owed to them in their retirement. These amounts were $722,000 for the CEO and $381,000 for the President. The Company has no further obligation to pay additional amounts pursuant to these agreements.
	Former CEO Retirement Benefits
	Metropolitan State Bank entered into an agreement in January 1997 with its former CEO, which provides for an annual retirement benefit of $35,000 for a fifteen year period. In February 1999, the Company entered into an additional agreement with this CEO. Such agreement provides for an additional retirement benefit of $35,000 per annum for a fifteen year period. During 2013, 2012 and 2011, $0, $1,000 and $5,000, respectively, was charged to operations related to these obligations.
	Benefit Obligations from Somerset Hills Acquisition
	Somerset Hills entered into a non-qualified Supplemental Executive Retirement Plan (“SERP”) with its former Chief Executive Officer and its Chief Financial Officer which entitles them to a benefit of $48,000 and $24,000, respectively, per year for 15 years after the earlier of retirement or death. The beneficiary of the Chief Financial Officer is currently being paid out under the plan. As of December 31, 2013, the Company has a liability of $590,000 for this SERP and has recognized an expense of $50,000 in 2013.
	Retirement Savings Plans (401(k) plans)
	Beginning in January 2002, the Company began contributing to its 401(k) plan. All eligible employees can contribute a portion of their annual salary with the Company matching up to 50% of the employee’s contributions. The Company’s contributions in 2013, 2012 and 2011 totaled $715,000, $628,000 and $596,000, respectively.
	Pension Plan
	Newton Trust Company had a defined benefit pension plan (the Plan) that was frozen prior to the acquisition by the Company. All participants of the Plan ceased accruing benefits as of that date.
	The investment policy and strategy of the Plan and its advisors includes target portfolio allocations of approximately 60% in equities, 30% in debt securities, 5% in commodities and 5% in cash. Based on historical performance, the Plan assumes that the long term equity securities have earned a rate of return of approximately 10% and fixed income securities have earned a return of between 1% and 5%.
	The assets of the Plan consist of cash and cash equivalents and investments in mutual funds that are actively traded. All of the mutual funds are classified as Level 1 securities meaning that their market values are unadjusted quoted prices in active markets.
	The following table shows the fair value and the portfolio allocations of the assets in the Plan by type of investment as of December 31 for the years presented (dollars in thousands):
		December 31, 2013						December 31, 2012
		Market			Percent of			Market			Percent of
		Value			Assets			Value			Assets
	Cash and cash equivalents	$	89			5	%	$	125			7	%
	Fixed Income Mutual funds		568			29	%		513			29	%
	U.S. Large-Cap funds		466			23	%		394			22	%
	U.S. Mid- and Small-Cap funds		148			7	%		124			7	%
	U.S. Balanced funds		315			16	%		252			14	%
	International funds		301			15	%		275			16	%
	Commodity funds		100			5	%		83			5	%
		$	1,987			100	%	$	1,766			100	%
	The accumulated benefit obligation as of December 31 is as follows:
	(in thousands)	2013			2012
	Accumulated postretirement benefit obligation	$	2,407		$	2,200
	Interest Cost		90			87
	Actuarial (gain) loss		(295	)		176
	Estimated benefit payments		(175	)		(56	)
	Total accumulated postretirement benefit obligation		2,027			2,407
	Fair value of plan assets beginning of period		1,766			1,484
	Return on plan assets		236			178
	Benefits paid		(175	)		(56	)
	Contribution		160			160
	Fair value of plan assets at end of year		1,987			1,766
	Funded status		(40	)		(641	)
	Unrecognized net actuarial loss		—			—
	Liability	$	(40	)	$	(641	)
	Accumulated benefit obligation	$	2,027		$	2,407
	The components of net periodic pension cost are as follows:
	(in thousands)	2013			2012			2011
	Amortization of actuarial loss	$	82		$	72		$	47
	Interest cost on APBO		90			87			97
	Expected return on plan assets		(72	)		(76	)		(89	)
	Net periodic postretirement cost	$	100		$	83		$	55
	The benefits expected to be paid in each of the next five years and the aggregate for the five fiscal years thereafter are as follows (in thousands):
	2014	$	138
	2015		65
	2016		153
	2017		178
	2018		142
	2018—2022		577
	The Company expects its contribution to be $160,000 in 2014.
	The Company and its actuary use certain assumptions in measuring the benefit obligation. The most significant of these is the discount rate used to measure the present value of the benefit obligations and the expense to be used in the following year financial statements. The Company uses the projected cash flows of the pension plan and the Citigroup pension liability index to develop the discount rate. The pension plan’s expected return on plan assets is based on historical investment return experience and is impacted by the target allocation of assets. There is no assumption on the rate of compensation because the plan is frozen and no participants are accruing benefits on the plan.
	The assumptions used to determine the pension obligation and the net periodic pension cost were as follows:
		2013			2012
	Discounted rate		4.75	%		3.75	%
	Expected return on plan assets		4.75	%		4	%
	Rate of Compensation		0	%		0	%
Deferred Compensation Arrangements
High Point Financial Corp. had established deferred compensation arrangements for certain directors and executives of High Point Financial Corp. and NBSC. The deferred compensation plans differ, but generally provide for annual payments for ten to fifteen years following retirement. The Company’s liabilities under these arrangements are being accrued from the commencement of the plans over the participants’ remaining periods of service. The Company intends to fund its obligations under the deferred compensation arrangements with the increase in cash surrender value of life insurance policies that it has purchased on the respective participants. The deferred compensation plans do not hold any assets. For the years ended December 31, 2013, 2012 and 2011 there were no charges related to this plan. As of December 31, 2013 and 2012, the accrued liability for these plans was $270,000 and $271,000, respectively.
Supplemental Executive Retirement Plans
In 2003, the Company entered into a supplemental executive retirement plan (SERP) agreement with its former CEO that provides annual retirement benefits of $150,000 a year for a 15 year period when the former CEO reached the age of 65. Our former CEO retired and is receiving annual retirement benefits pursuant to the plan. In 2008, the Company entered into a SERP agreement with its current CEO that provides annual retirement benefits of $150,000 for a 15 year period when the CEO reaches the age of 65. In November 2008, the Company entered into a SERP with its Senior Executive Vice President and Chief Operating Officer that provides annual retirement benefits of $90,000 a year for a 10 year period upon his reaching the age of 65. The Company intends to fund its obligations under the deferred compensation arrangements with the increase in cash surrender value of bank owned life insurance policies. In 2013, 2012 and 2011, the Company recorded compensation expense of $247,000, $434,000 and $233,000, respectively, for these plans.

Directors_Retirement_Plan

Directors Retirement Plan	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Directors Retirement Plan	'
	NOTE 12—DIRECTORS RETIREMENT PLAN
	The Company provides a plan that any director who became a member of the Board of Directors prior to 2009 who completes five years of service may retire and continue to be paid for a period of ten years at a rate ranging from $5,000 through $17,500 per annum, depending upon years of credited service. This plan is unfunded. The following tables present the status of the plan and the components of net periodic plan cost for the years then ended. The measurement date for the accumulated benefit obligation is December 31 of the years presented.
		December 31,
		2013			2012
		(in thousands)
	Accrued plan cost included in other liabilities	$	885		$	1,093
	Amount not recognized as component of net postretirement benefit cost
	Recognized in accumulated other comprehensive income
	Net actuarial (gain) loss	($	198	)	$	82
	Unrecognized prior service cost		—			—
	Amounts not recognized as a component of net	($	198	)	$	82
	postretirement benefit cost (benefit)
		Years ended December 31,
		2013			2012		2011
		(in thousands)
	Net periodic plan cost included the following components:
	Service cost	$	29		$	30	$	24
	Interest cost		36			41		48
	Amortization of prior service cost		21			26		23
		$	86		$	97	$	95
	A discount rate of 4.75% and 3.75% was assumed in the plan valuation for 2013 and 2012, respectively. As the benefit amount is not dependent upon compensation levels, a rate of increase in compensation assumption was not utilized in the plan valuation.
	The director’s retirement plan holds no plan assets. The benefits expected to be paid in each of the next five years and in aggregate for the five years thereafter are as follows (in thousands):
	2014	$	65
	2015		75
	2016		75
	2017		70
	2018		68
	2019-2023		175
	The Company expects its contribution to the director’s retirement plan to be $65,000 in 2014.
	The amount in accumulated other comprehensive loss expected to be recognized as a component of net periodic benefit cost in 2014 is $26,000.

Stockbased_Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-based Compensation	'
	NOTE 13—STOCK-BASED COMPENSATION
	Employee Stock Option Plans
	On May 21, 2009, the Company’s shareholders approved the 2009 Equity Compensation Program, which authorizes the granting of incentive stock options, supplemental stock options, restricted shares and restricted stock units to employees of the Company, including those employees serving as officers and directors of the Company. The plan authorizes the issuance of 2.2 million shares in connection with options and awards granted under the 2009 program.
	The Company established the 2000 Equity Compensation Program which authorizes the granting of incentive stock options, supplemental stock options and restricted stock to employees of the Company which includes those employees serving as officers and directors of the Company. The plan authorized 2,488,748 shares of common stock of the Company. No further awards will be granted from the 2000 program.
	On May 31, 2013, the Company granted options to purchase 50,000 shares (25,000 shares each) to two new non-employee directors of the Company at an exercise price of $9.91 per share under the 2009 program. The directors’ options are exercisable in five equal installments beginning on the date of grant and continuing on the next four anniversaries of the date of grant.
	The estimated fair values were determined on the dates of grant using the Black-Scholes Option pricing model. The fair value of the Company’ stock option awards are expensed on a straight-line basis over the vesting period of the stock option. The risk-free rate is based on the implied yield on a U.S. Treasury bond with a term approximating the expected term of the option. The expected volatility computation is based on historical volatility over a period approximating the expected term of the option. The dividend yield is based on the annual dividend payment per share, divided by the grant date stock price. The expected option term is estimated examining historical terms on similar option grants and is a function of the option life and the vesting period.
	The fair value of these options were estimated using the Black-Scholes pricing model with the following weighted average assumptions:
	Risk-free interest rates		1.55	%
	Expected dividend yield		2.82	%
	Expected volatility		45.45	%
	Expected lives (years)		7
	Weighted average fair value of options granted	$	3.48
	There were no stock options granted in 2012 or 2011. As of December 31, 2013 and 2012, 197,881 and 179,785 options granted to directors were outstanding, respectively.
	The Company also assumed the outstanding options granted under Somerset Hills’ stock option plans at the time of merger. Based on the conversion ratio in the merger, the Company assumed options to purchase 376,372 shares of Lakeland stock in these plans at a weighted average exercise price of $6.65. The fair value of these options were estimated using the Black Scholes pricing model with the following range of assumptions:
	Risk-free interest rates	0.04%—1.55%
	Expected dividend yield	2.82%
	Expected volatility	13% to 47%
	Expected lives (years)	3 months—7 years
	Weighted average fair value of options granted	$3.98
	As of December 31, 2013, there was 92,339 options outstanding under these plans.
	As of December 31, 2013 and 2012, outstanding options to purchase common stock granted to key employees were 199,900 and 295,912, respectively.
	Excess tax benefits (losses) of stock based compensation were $142,000, $4,000 and $(3,000) for the years 2013, 2012 and 2011, respectively.
	A summary of the status of the Company’s option plans as of December 31, 2013 and the changes during the year ending on that date is represented below.
		Number of			Weighted		Weighted		Aggregate
		shares			average		average		Intrinsic
					exercise		remaining		Value
					price		contractual
							term
							(in years)
	Outstanding, beginning of year		475,697		$	12.31			$	53,853
	Granted		426,372			7.03
	Exercised		(346,869	)		7.41
	Expired		(56,687	)		12.14
	Forfeited		(8,393	)		12.95
	Outstanding, end of year		490,120		$	11.19		3.48	$	754,938
	Options exercisable at year-end		444,607		$	11.35		2.91	$	633,585
	A summary of the Company’s non-vested options under the Company’s option plans as of December 31, 2013 and changes for the year then ended is presented below.
	Non-vested Options	Shares			Weighted-
					Average
					Grant-
					date Fair
					Value
	Non-vested, January 1, 2013		11,026		$	3.11
	Granted		50,000			3.48
	Vested		(15,513	)		3.36
	Non-vested, December 31, 2013		45,513		$	3.43
	As of December 31, 2013, there was $124,000 of unrecognized compensation expense related to unvested stock options under the 2009 and 2000 Equity Compensation Programs. Compensation expense recognized for stock options was $72,000, $22,000 and $43,000 for 2013, 2012 and 2011, respectively.
	The aggregate intrinsic values of options exercised in 2013 was $1.5 million. Exercise of stock options during 2013 resulted in cash receipts of $2.2 million. There were no options exercised in 2012. The aggregate intrinsic values of options exercised in 2011 was $78,000. Exercise of stock options during 2011 resulted in cash receipts of $72,000. The total fair value of options that vested in 2013 and 2012 were $52,000 and $34,000, respectively.
	In 2011, the Company granted 100,112 shares of restricted stock at a fair value of $9.40 per share under the Company’s 2009 equity compensation program. These shares vest over a five year period. The Company uses the straight line attribution method to record the expense on its restricted stock. Compensation expense on these shares is expected to average approximately $188,000 per year for the following five years. In 2012, the Company granted 91,269 shares of restricted stock at a grant date fair value of $9.50 per share under the Company’s 2009 equity compensation program. These shares vest over a five year period. Compensation expense on these shares is expected to average approximately $173,000 per year for the next five years. In 2013, the Company granted 104,182 shares of restricted stock at a grant date fair value of $9.88 per share under the Company’s 2009 equity compensation program. These shares vest over a five year period. Compensation expense on these shares is expected to average approximately $206,000 per year for the next five years.
	Information regarding the Company’s restricted stock for the year ended December 31, 2013 is as follows:
		Number of			Weighted
		shares			average
					price
	Outstanding, January 1, 2013		222,556		$	9.15
	Granted		104,182			9.87
	Vested		(72,396	)		8.65
	Forfeited		(4,561	)		9.99
	Outstanding, December 31, 2013		249,781		$	9.58
	The total fair value of the restricted stock vested during the year ended December 31, 2013 was approximately $896,000. Compensation expense recognized for restricted stock was $823,000, $724,000 and $584,000 in 2013, 2012 and 2011, respectively. There was approximately $1.4 million in unrecognized compensation expense related to restricted stock grants as of December 31, 2013, which is expected to be recognized over a period of 2.8 years.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	NOTE 14—COMMITMENTS AND CONTINGENCIES
	Lease Obligations
	Lakeland is obligated under various non-cancelable operating leases on building and land used for office space and banking purposes. These leases contain renewal options and escalation clauses. Rent expense under long-term operating leases amounted to approximately $2.5 million, $2.1 million and $1.9 million for the years ended December 31, 2013, 2012 and 2011, respectively, including rent expense to related parties of $180,000 in 2013, $227,000 in 2012, and $325,000, in 2011. At December 31, 2013, the minimum commitments under all noncancellable leases with remaining terms of more than one year and expiring through 2032 are as follows (in thousands):
	Year
	2014	$	2,526
	2015		2,296
	2016		1,934
	2017		1,550
	2018		1,306
	Thereafter		10,287
		$	19,899
	Litigation
	As previously reported, on or about February 15, 2013, the Company was served with a Civil Action Summons and Class Action Complaint, captioned Higgenbottom v. McClure, et al., that was filed in the Superior Court of New Jersey, Chancery Division, Somerset County, Docket No. C-12006-13. The complaint states that the plaintiff is bringing the class action on behalf of the public stockholders of Somerset Hills Bancorp against the Board of Directors of Somerset Hills for their alleged breach of fiduciary duties arising out of the Agreement and Plan of Merger, dated as of January 28, 2013, by and between the Company and Somerset Hills Bancorp. The merger with Somerset Hills closed on May 31, 2013.
	The parties negotiated a settlement of the complaint, which was approved by the court by order dated January 30, 2014. No amounts are payable to the class under the settlement. The parties did not agree on the issue of the amount of attorney’s fees to be paid to the plaintiff. In its January 30, 2014 decision, the Court denied without prejudice the application for attorney’s fees, pending a hearing to be scheduled in the near future. Subsequent to the date of the court’s order, the parties agreed to a payment of plaintiff’s attorneys’ fees and costs in the amount of $52,500, which was approved by the court and paid by the insurance carrier.
	There are no pending legal proceedings involving the Company or Lakeland other than those arising in the normal course of business. Management does not anticipate that the potential liability, if any, arising out of such legal proceedings will have a material effect on the financial condition or results of operations of the Company and Lakeland on a consolidated basis.

Financial_Instruments_with_Off

Financial Instruments with Off-Balance-Sheet Risk and Concentrations of Credit Risk	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Financial Instruments with Off-Balance-Sheet Risk and Concentrations of Credit Risk	'
	NOTE 15—FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK AND CONCENTRATIONS OF CREDIT RISK
	Lakeland is party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Such financial instruments are recorded in the consolidated financial statements when they become payable. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets. The contract or notional amounts of those instruments reflect the extent of involvement Lakeland has in particular classes of financial instruments.
	Lakeland’s exposure to credit loss in the event of non-performance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual or notional amount of those instruments. Lakeland uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments.
	Lakeland generally requires collateral or other security to support financial instruments with credit risk. The approximate contract amounts are as follows:
		December 31,
		2013		2012
		(in thousands)
	Financial instruments whose contract amounts represent credit risk
	Commitments to extend credit	$	589,619	$	430,641
	Standby letters of credit and financial guarantees written		9,244		7,922
	At December 31, 2013 and 2012 there were $45,000 and $54,000, respectively, in commitments to lend additional funds to borrowers whose terms have been modified in troubled debt restructurings.
	Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Lakeland evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by Lakeland upon extension of credit, is based on management’s credit evaluation.
	Standby letters of credit are conditional commitments issued by Lakeland to guarantee the payment by or performance of a customer to a third party. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Lakeland holds deposit accounts, residential or commercial real estate, accounts receivable, inventory and equipment as collateral to support those commitments for which collateral is deemed necessary. The extent of collateral held for those commitments at December 31, 2013 and 2012 varies based on management’s credit evaluation.
	Lakeland issues financial and performance letters of credit. Financial letters of credit require Lakeland to make payment if the customer fails to make payment, as defined in the agreements. Performance letters of credit require Lakeland to make payments if the customer fails to perform certain non-financial contractual obligations. Lakeland defines the initial fair value of these letters of credit as the fees received from the customer. Lakeland records these fees as a liability when issuing the letters of credit and amortizes the fee over the life of the letter of credit.
	The maximum potential undiscounted amount of future payments of these letters of credit as of December 31, 2013 is $9.2 million and they expire through 2024. Lakeland’s exposure under these letters of credit would be reduced by actual performance, subsequent termination by the beneficiaries and by any proceeds that Lakeland obtained in liquidating the collateral for the loans, which varies depending on the customer.
	As of December 31, 2013, Lakeland had $589.6 million in loan and lease commitments, with $486.7 million maturing within one year, $55.5 million maturing after one year but within three years, $766,000 maturing after three years but within five years, and $46.6 million maturing after five years. As of December 31, 2013, Lakeland had $9.2 million in standby letters of credit, with $8.7 million maturing within one year, $459,000 maturing after one year but within three years, and $80,000 maturing after five years.
	Lakeland grants loans primarily to customers in its immediately adjacent suburban counties which include Bergen, Morris, Passaic, Sussex, Warren, Somerset, Union and Essex counties in Northern New Jersey and surrounding areas. Certain of Lakeland’s consumer loans and lease customers are more diversified nationally. Although Lakeland has a diversified loan portfolio, a large portion of its loans are secured by commercial or residential real property. Although Lakeland has a diversified loan portfolio, a substantial portion of its debtors’ ability to honor their contracts is dependent upon the economy. Commercial and standby letters of credit were granted primarily to commercial borrowers.

Comprehensive_Income

Comprehensive Income	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Comprehensive Income	'
	NOTE 16—COMPREHENSIVE INCOME
	The Company reports comprehensive income in addition to net income (loss) from operations. Comprehensive income is a more inclusive financial reporting methodology that includes disclosure of certain financial information that historically has not been recognized in the calculation of net income.
	The following table shows the changes in the balances of each of the components of other comprehensive income for the periods presented:
			Year ended December 31, 2013
			Before tax			Tax			Net of
			amount			Benefit			tax amount
						(Expense)
			(dollars in thousands)
	Unrealized losses on available for sale securities
	Unrealized holding losses arising during period		$	(13,675	)	$	4,985		$	(8,690	)
	Less reclassification adjustment for net gains realized in net income			839			(330	)		509
	Net unrealized losses on available for sale securities			(14,514	)		5,315			(9,199	)
	Change in pension liabilities			866			(278	)		588
	Other comprehensive loss, net		$	(13,648	)	$	5,037		$	(8,611	)
			Year ended December 31, 2012
			Before			Tax			Net of
			tax			Benefit			tax
			amount			(Expense)			amount
			(dollars in thousands)
	Unrealized gains on available for sale securities
	Unrealized holding gains arising during period		$	2,697		$	(969	)	$	1,728
	Less reclassification adjustment for net gains realized in net income			1,049			(367	)		682
	Net unrealized gains on available for sale securities			1,648			(602	)		1,046
	Change in pension liabilities			30			(11	)		19
	Other comprehensive income, net		$	1,678		$	(613	)	$	1,065
			Year ended December 31, 2011
			Before			Tax			Net of
			tax			Benefit			tax
			amount			(Expense)			amount
			(dollars in thousands)
	Unrealized gains on available for sale securities
	Unrealized holding gains arising during period		$	8,600		$	(3,155	)	$	5,445
	Less reclassification adjustment for net gains realized in net income			1,229			(430	)		799
	Net unrealized gains on available for sale securities			7,371			(2,725	)		4,646
	Change in pension liabilities			(176	)		74			(102	)
	Other comprehensive income, net		$	7,195		$	(2,651	)	$	4,544
			For the Year  Ended									For the Year  Ended									For the Year  Ended
			31-Dec-13									31-Dec-12									31-Dec-11
			Unrealized			Pension Items			Total			Unrealized			Pension Items			Total			Unrealized			Pension Items			Total
			Gains and									Gains and									Gains and
			Losses on									Losses on									Losses on
			Available-									Available-									Available-
			for-sale									for-sale									for-sale
			Securities									Securities									Securities
	Beginning Balance		$	4,552		($	616	)	$	3,936		$	3,506		($	635	)	$	2,871		($	1,140	)	($	533	)	($	1,673	)
			(in thousands)
	Other comprehensive income (loss) before classifications			(8,690	)		588			(8,102	)		1,728			19			1,747			5,445			(102	)		5,343
	Amounts reclassified from accumulated other comprehensive income			(509	)		—			(509	)		(682	)		—			(682	)		(799	)		—			(799	)
	Net current period other comprehensive income (loss)			(9,199	)		588			(8,611	)		1,046			19			1,065			4,646			(102	)		4,544
	Ending balance		($	4,647	)	($	28	)	($	4,675	)	$	4,552		($	616	)	$	3,936		$	3,506		($	635	)	$	2,871
	*	All amounts are net of tax.

Fair_Value_Measurement_and_Fai

Fair Value Measurement and Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurement and Fair Value of Financial Instruments	'
	NOTE 17—FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS
	Fair Value Measurement
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for an asset or liability in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels giving the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1 measurements) and the lowest level priority to unobservable inputs (level 3 measurements). The following describes the three levels of fair value hierarchy:
	Level 1 – unadjusted quoted prices in active markets for identical assets or liabilities; includes U.S. Treasury Notes, and other U.S. Government Agency securities that actively trade in over-the-counter markets; equity securities and mutual funds that actively trade in over-the-counter markets.
	Level 2 – quoted prices for similar assets or liabilities in active markets; or quoted prices for identical or similar assets or liabilities in markets that are not active; or inputs other than quoted prices that are observable for the asset or liability including yield curves, volatilities, and prepayment speeds.
	Level 3 – unobservable inputs for the asset or liability that reflect the Company’s own assumptions about assumptions that market participants would use in the pricing of the asset or liability and that are consequently not based on market activity but upon particular valuation techniques.
	The Company’s assets that are measured at fair value on a recurring basis are its available for sale investment securities and its interest rate swaps. The Company obtains fair values on its securities using information from a third party servicer. If quoted prices for securities are available in an active market, those securities are classified as Level 1 securities. The Company has a U.S. Treasury Note and certain equity securities that are classified as Level 1 securities. Level 2 securities were primarily comprised of U.S. Agency bonds, residential mortgage-backed securities, obligations of state and political subdivisions and corporate securities. Fair values were estimated primarily by obtaining quoted prices for similar assets in active markets or through the use of pricing models supported with market data information. Standard inputs include benchmark yields, reported trades, broker-dealer quotes, issuer spreads, bids and offers. On a quarterly basis, the Company reviews the pricing information received from the Company’s third party pricing service. This review includes a comparison to non-binding third-party quotes.
	The fair values of derivatives are based on valuation models using current market terms (including interest rates and fees), the remaining terms of the agreements and the credit worthiness of the counter-party as of the measurement date (Level 2).
	The following table sets forth the Company’s financial assets that were accounted for at fair value on a recurring basis as of the periods presented by level within the fair value hierarchy. During the year ended December 31, 2013 and 2012, the Company did not make any transfers between recurring Level 1 fair value measurements and recurring Level 2 fair value measurements. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:
	December 31, 2013		Quoted Prices in		Significant		Significant		Total
			Active Markets		Other		Unobservable		Fair Value
			for Identical		Observable		Inputs
			Assets		Inputs		(Level 3)
			(Level 1)		(Level 2)
			(in thousands)
	Assets:
	Investment securities, available for sale
	U.S. treasury and government agencies		$	4,330		65,835	$	—	$	70,165
	Mortgage backed securities			—		304,502		—		304,502
	Obligations of states and political subdivisions			—		36,873		—		36,873
	Corporate debt securities			—		3,420		—		3,420
	Equity securities			3,239		12,907		—		16,146
	Total securities available for sale			7,569		423,537		—		431,106
	Other Assets(a)			—		562		—		562
	Total Assets		$	7,569		424,099		—	$	431,668
	Other Liabilities(a)		$	—	$	562	$	—	$	562
	Total Liabilities		$	—	$	562	$	—	$	562
	(a)	Non-hedging interest rate derivatives
	December 31, 2012
	Assets:
	Investment securities, available for sale
	U.S. treasury and government agencies		$	3,493	$	83,078	$	—	$	86,571
	Mortgage backed securities			—		239,559		—		239,559
	Obligations of states and political subdivisions			—		38,620		—		38,620
	Corporate debt securities			—		13,444		—		13,444
	Equity securities			2,010		13,506		—		15,516
	Total securities available for sale			5,503		388,207		—		393,710
	Other Assets(a)			—		195		—		195
	Total Assets		$	5,503	$	388,402	$	—	$	393,905
	Other Liabilities(a)		$	—	$	195	$	—	$	195
	Total Liabilities		$	—	$	195	$	—	$	195
	(a)	Non-hedging interest rate derivatives
	The following table sets forth the Company’s financial assets subject to fair value adjustments (impairment) on a nonrecurring basis. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:
	31-Dec-13		(Level 1)		(Level 2)		(Level 3)		Total
									Fair Value
			(in thousands)
	Assets:
	Impaired Loans and Leases		$	—	$	—	$	26,402	$	26,402
	Loans held for sale			—		1,206		—		1,206
	Other real estate owned and other repossessed assets			—		—		520		520
	31-Dec-12		(Level 1)		(Level 2)		(Level 3)		Total
									Fair  Value
			(in thousands)
	Assets:
	Impaired Loans and Leases		$	—	$	—	$	31,531	$	31,531
	Other real estate owned and other repossessed assets			—		—		529		529
	Impaired loans and leases are evaluated and valued at the time the loan is identified as impaired at the lower of cost or market value. Because most of Lakeland’s impaired loans are collateral dependant, fair value is generally measured based on the value of the collateral securing these loans and leases and is classified at a level 3 in the fair value hierarchy. Collateral may be real estate, accounts receivable, inventory, equipment and/or other business assets. The value of the real estate is assessed based on appraisals by qualified third party licensed appraisers. The appraisers may use the income approach to value the collateral using discount rates (with ranges of 5-11%) or capitalization rates (with ranges of 5-9%) to evaluate the property. The value of the equipment may be determined by an appraiser, if significant, inquiry through a recognized valuation resource, or by the value on the borrower’s financial statements. Field examiner reviews on business assets may be conducted based on the loan exposure and reliance on this type of collateral. Appraised and reported values may be discounted based on management’s historical knowledge, changes in market conditions from the time of valuation, and/or management’s expertise and knowledge of the client and client’s business. Impaired loans and leases are reviewed and evaluated on at least a quarterly basis for additional impairment and adjusted accordingly, based on the same factors identified above.
	The Company has a held for sale loan portfolio that consists of residential mortgages that are being sold in the secondary market. The Company records these mortgages at the lower of cost or market value. Fair value is generally determined by the value of purchase commitments.
	Other real estate owned (OREO) and other repossessed assets, representing property acquired through foreclosure, are carried at fair value less estimated disposal costs of the acquired property. Fair value on other real estate owned is based on the appraised value of the collateral using discount rates or capitalization rates similar to those used in impaired loan valuation. The fair value of other repossessed assets is estimated by inquiry through a recognized valuation resource.
	Changes in the assumptions or methodologies used to estimate fair values may materially affect the estimated amounts. Changes in economic conditions, locally or nationally, could impact the value of the estimated amounts of impaired loans, OREO and other repossessed assets.
	Fair Value of Certain Financial Instruments
	Estimated fair values have been determined by the Company using the best available data and an estimation methodology suitable for each category of financial instruments. Management is concerned that there may not be reasonable comparability between institutions due to the wide range of permitted assumptions and methodologies in the absence of active markets. This lack of uniformity gives rise to a high degree of subjectivity in estimating financial instrument fair values.
	The estimation methodologies used, the estimated fair values, and recorded book balances at December 31, 2013 and December 31, 2012 are outlined below.
This summary, as well as the table below, excludes financial assets and liabilities for which carrying value approximates fair value. For financial assets, these include cash and cash equivalents. For financial liabilities, these include noninterest bearing demand deposits, savings and interest-bearing transaction accounts and federal funds sold and securities sold under agreements to repurchase. The estimated fair value of demand, savings and interest-bearing transaction accounts is the amount payable on demand at the reporting date. Carrying value is used because there is no stated maturity on these accounts, and the customer has the ability to withdraw the funds immediately. Also excluded from this summary and the following table are those financial instruments recorded at fair value on a recurring basis, as previously described.
The fair value of Investment Securities Held to Maturity was measured using information from the same third-party servicer used for Investment Securities Available for Sale using the same methodologies discussed above. Investment Securities Held to Maturity includes $5.2 million in short-term municipal bond anticipation notes that are non-rated and do not have an active secondary market or information readily available on standard financial systems. As a result, the securities are classified as Level 3 securities. These are investments in municipalities in the Company’s market area, and management performs a credit analysis on the municipality before investing in these securities.
Federal Home Loan Bank of New York (FHLB) stock is an equity interest that can be sold to the issuing FHLB, to other FHLBs, or to other member banks at its par value. Because ownership of these securities is restricted, they do not have a readily determinable fair value. As such, the Company’s FHLB Stock is recorded at cost or par value and is evaluated for impairment each reporting period by considering the ultimate recoverability of the investment rather than temporary declines in value. The Company’s evaluation primarily includes an evaluation of liquidity, capitalization, operating performance, commitments, and regulatory or legislative events.
The net loan portfolio at December 31, 2013 and December 31, 2012 has been valued using a present value discounted cash flow where market prices were not available. The discount rate used in these calculations is the estimated current market rate for new loans with similar credit risk. The valuation of our loan portfolio is consistent with accounting guidance but does not fully incorporate the exit price approach.
For fixed maturity certificates of deposit, fair value was estimated based on the present value of discounted cash flows using the rates currently offered for deposits of similar remaining maturities. The carrying amount of accrued interest payable approximates its fair value.
The fair value of long-term debt is based upon the discounted value of contractual cash flows. The Company estimates the discount rate using the rates currently offered for similar borrowing arrangements. The fair value of subordinated debentures is based on bid/ask prices from brokers for similar types of instruments.
The fair values of commitments to extend credit and standby letters of credit are estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed-rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value of guarantees and letters of credit is based on fees currently charged for similar agreements or on the estimated cost to terminate them or otherwise settle the obligations with the counterparties at the reporting date. The fair values of commitments to extend credit and standby letters of credit are deemed immaterial.
The following table presents the carrying values, fair values and placement in the fair value hierarchy of the Company’s financial instruments as of December 31, 2013 and December 31, 2012:
December 31, 2013		Carrying		Fair		Quoted Prices in		Significant		Significant
		Value		Value		Active Markets		Other		Unobservable
						for Identical		Observable		Inputs
						Assets		Inputs		(Level 3)
						(Level 1)		(Level 2)
		(in thousands)
Financial Instruments—Assets
Investment securities held to maturity		$	101,744	$	100,394	$	—	$	95,194	$	5,200
Federal Home Loan and other membership bank stock			7,938		7,938		—		7,938		—
Loans and leases, net			2,439,195		2,432,447		—		—		2,432,447
Financial Instruments—Liabilities
Certificates of Deposit			296,086		296,237		—		296,237		—
Other borrowings			119,000		121,870		—		121,870		—
Subordinated debentures			41,238		27,835		—		—		27,835
31-Dec-12
Financial Assets:
Investment securities held to maturity		$	96,925	$	99,784	$	—	$	87,336	$	12,448
Federal Home Loan and other membership bank stock			5,382		5,382		—		5,382		—
Loans and leases			2,146,843		2,154,507		—		—		2,154,507
Financial Liabilities:
Certificates of Deposit			303,792		305,398		—		305,398		—
Other borrowings			85,000		91,325		—		91,325		—
Subordinated debentures			51,548		33,403		—		—		33,403

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Derivatives	'
	NOTE 18—DERIVATIVES
	Lakeland is a party to interest rate derivatives that are not designated as hedging instruments. These derivatives relate to interest rate swaps that Lakeland enters into with customers to allow customers to convert variable rate loans to a fixed rate. Lakeland pays interest to the customer at a floating rate on the notional amount and receives interest from the customer at a fixed rate for the same notional amount. At the same time the interest rate swap is entered into with the customer, an offsetting interest rate swap is entered into with another financial institution. Lakeland pays the other financial institution interest at the same fixed rate on the same notional amount as the swap entered into with the customer, and receives interest from the financial institution for the same floating rate on the same notional amount. The changes in the fair value of the swaps offset each other, except for the credit risk of the counterparties, which is determined by taking into consideration the risk rating, probability of default and loss given default for all counterparties. Lakeland does not typically require its commercial customers to post cash or securities as collateral on its program of back-to-back swaps. However, certain language is written into the International Swaps and Derivatives Association agreement and loan documents where, in default situations, Lakeland is allowed to access collateral supporting the loan relationship to recover any losses suffered on the derivative asset or liability. As of December 31, 2013, Lakeland had $1.5 million in securities pledged for collateral on its interest rate swap with the financial institution.
	The following table presents summary information regarding these derivatives for the periods presented (dollars in thousands):
	December 31, 2013	Notional Amount			Average			Weighted Average			Weighted Average		Fair Value
					Maturity (Years)			Rate Fixed			Variable Rate
	3rd party interest rate swaps	$	17,691			6.7			3.83	%		1Mo Libor + 2.21	($	562	)
	Customer interest rate swaps		(17,691	)		6.7			3.83	%		1Mo Libor + 2.21		562
	December 31, 2012	Notional Amount			Average			Weighted Average			Weighted Average		Fair Value
					Maturity(Years)			Rate Fixed			Variable Rate
	3rd party interest rate swaps	$	6,400			10.1			4.625	%		1Mo Libor + 2.61	$	195
	Customer interest rate swaps		(6,400	)		10.1			4.625	%		1Mo Libor + 2.61	($	195	)
	The following shows Lakeland’s transactions that are subject to an enforceable master netting arrangement or other such similar agreements for the periods presented:
	December 31, 2013
	Offsetting of Financial Assets and Derivative Assets							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Assets			Instruments
		Assets			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Customer interest rate swaps	$	17,691		($	17,129	)	$	562		$	—
	Total	$	17,691		($	17,129	)	$	562		$	—
	Offsetting of Financial Liabilities and Derivative Liabilities							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Liabilities			Instruments
		Liabilities			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Third party interest rate swaps	$	17,691		($	17,129	)	$	562		$	—
	Total	$	17,691		($	17,129	)	$	562		$	—
	December 31, 2012
	Offsetting of Financial Assets and Derivative Assets							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Assets			Instruments
		Assets			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Third party interest rate swaps	$	6,400		($	6,205	)	$	195		$	—
	Total	$	6,400		($	6,205	)	$	195		$	—
	Offsetting of Financial Liabilities and Derivative Liabilities							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Liabilities			Instruments
		Liabilities			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Customer interest rate swaps	$	6,400		($	6,205	)	$	195		$	—
	Total	$	6,400		($	6,205	)	$	195		$	—

Regulatory_Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2013
Banking And Thrift [Abstract]	'
Regulatory Matters	'
	NOTE 19—REGULATORY MATTERS
	The Bank Holding Company Act of 1956 restricts the amount of dividends the Company can pay. Accordingly, dividends should generally only be paid out of current earnings, as defined.
	The New Jersey Banking Act of 1948 restricts the amount of dividends paid on the capital stock of New Jersey chartered banks. Accordingly, no dividends shall be paid by such banks on their capital stock unless, following the payment of such dividends, the capital stock of Lakeland will be unimpaired, and: (1) Lakeland will have a surplus, as defined, of not less than 50% of its capital stock, or, if not, (2) the payment of such dividend will not reduce the surplus, as defined, of Lakeland. Under these limitations, approximately $248.5 million was available for payment of dividends from Lakeland to the Company as of December 31, 2013.
	The Company and Lakeland are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory—and possible additional discretionary – actions by regulators that, if undertaken, could have a direct material effect on the Company’s and Lakeland’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s and Lakeland’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s and Lakeland’s capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.
	Quantitative measures established by regulations to ensure capital adequacy require the Company and Lakeland to maintain minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets, and of Tier 1 capital to average assets. Management believes, as of December 31, 2013, that the Company and Lakeland met all capital adequacy requirements to which they are subject.
	As of December 31, 2013, the most recent notification from the FDIC categorized Lakeland as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, Lakeland must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed the institution’s category.
	As of December 31, 2013 and 2012, the Company and Lakeland have the following capital ratios:
		Actual					For capital					To be well capitalized
							adequacy purposes					under prompt corrective
												action provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(dollars in thousands)
	As of December 31, 2013
	Total capital (to risk-weighted assets)
	Company	$	313,499		12.98	%	>$	193,166		> 8.00	%		N/A		N/A
	Lakeland		296,334		12.29			192,819		8		> $	241,023		> 10.00	%
	Tier 1 capital (to risk-weighted assets)
	Company	$	283,307		11.73	%	>$	96,583		> 4.00	%		N/A		N/A
	Lakeland		266,195		11.04			96,409		4			> 144,614		> 6.00	%
	Tier 1 capital (to average assets)
	Company	$	283,307		8.9	%	>$	127,281		> 4.00	%		N/A		N/A
	Lakeland		266,195		8.38			127,104		4			> 158,879		> 5.00	%
		Actual					For capital					To be well capitalized
							adequacy purposes					under prompt corrective
												action provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(dollars in thousands)
	As of December 31, 2012
	Total capital (to risk-weighted assets)
	Company	$	265,894		12.77	%	>$	166,561		> 8.00	%		N/A		N/A
	Lakeland		247,680		11.92			166,273		8			> 207,842		> 10.00	%
	Tier 1 capital (to risk-weighted assets)
	Company	$	239,819		11.52	%		> 83,281		> 4.00	%		N/A		N/A
	Lakeland		221,650		10.66			83,137		4			> 124,705		> 6.00	%
	Tier 1 capital (to average assets)
	Company	$	239,819		8.62	%		> 111,256		> 4.00	%		N/A		N/A
	Lakeland		221,650		7.98			111,082		4			> 138,852		> 5.00	%

Condensed_Financial_Informatio

Condensed Financial Information - Parent Company Only	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]	'
Condensed Financial Information - Parent Company Only	'
	NOTE 20—CONDENSED FINANCIAL INFORMATION – PARENT COMPANY ONLY:
	CONDENSED BALANCE SHEETS
		December 31,
		2013			2012
		(in thousands)
	ASSETS
	Cash and due from banks	$	7,478		$	10,349
	Investment securities available for sale		3,248			2,375
	Investment in subsidiaries		374,738			313,575
	Other assets		7,530			6,461
	TOTAL ASSETS	$	392,994		$	332,760
	LIABILITIES AND STOCKHOLDERS’ EQUITY
	Other liabilities	$	332		$	345
	Subordinated debentures		41,238			51,548
	Common stockholders’ equity		351,424			280,867
	TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	392,994		$	332,760
	CONDENSED STATEMENTS OF OPERATIONS
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	INCOME
	Dividends from subsidiaries	$	20,916		$	31,300		$	31,845
	Other income		1,640			403			227
	TOTAL INCOME		22,556			31,703			32,072
	EXPENSE
	Interest on subordinated debentures		1,286			3,664			4,443
	Noninterest expenses		2,551			1,718			1,634
	TOTAL EXPENSE		3,837			5,382			6,077
	Income before benefit for income taxes		18,719			26,321			25,995
	Income taxes benefit		(722	)		(1,654	)		(1,960	)
	Income before equity in undistributed income of subsidiaries		19,441			27,975			27,955
	Equity in undistributed income (loss) of subsidiaries		5,528			(6,233	)		(8,104	)
	NET INCOME	$	24,969		$	21,742		$	19,851
	Interest on preferred stock and discount accretion		—			620			2,167
	Net Income Available to Common Shareholders	$	24,969		$	21,122		$	17,684
	CONDENSED STATEMENTS OF CASH FLOWS
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	CASH FLOWS FROM OPERATING ACTIVITIES
	Net income	$	24,969		$	21,742		$	19,851
	Adjustments to reconcile net income to net cash provided by (used in) operating activities:
	Share based compensation		895			746			627
	Gain on securities		(359	)		—			—
	Gain on land held for sale		—			(235	)		—
	Gain on early extinguishment		(1,197	)		—			—
	Increase in other assets		(954	)		(1,553	)		(1,660	)
	Increase (decrease) in other liabilities		25			(610	)		3
	Equity in undistributed (income) loss of subsidiaries		(5,528	)		6,233			8,104
	NET CASH PROVIDED BY OPERATING ACTIVITIES		17,851			26,323			26,925
	CASH FLOWS FROM INVESTING ACTIVITIES
	Net cash used in acquisition		(6,233	)		—			—
	Purchases of securities		(415	)		(53	)		(38	)
	Sale of land held for sale		—			1,042			—
	Proceeds from sale of securities available for sale		654			—			—
	Contribution to subsidiary		—			—			—
	NET CASH (USED) PROVIDED BY IN INVESTING ACTIVITIES		(5,994	)		989			(38	)
	CASH FLOWS FROM FINANCING ACTIVITIES
	Cash dividends paid on common and preferred stock		(8,152	)		(5,992	)		(6,327	)
	Issuance of stock to the dividend reinvestment and stock purchase plan		186			160			185
	Proceeds on issuance of stock, net		—			25,040			—
	Redemption of subordinated debentures, net		(9,113	)		(25,000	)		—
	Redemption of preferred stock		—			(19,000	)		(20,000	)
Warrant repurchase		—			(2,800	)		—
Excess tax benefits		142			4			(3	)
Exercise of stock options		2,209			—			72
NET CASH USED IN FINANCING ACTIVITIES		(14,728	)		(27,588	)		(26,073	)
Net increase (decrease) in cash and cash equivalents		(2,871	)		(276	)		814
Cash and cash equivalents, beginning of year		10,349			10,625			9,811
CASH AND CASH EQUIVALENTS, END OF YEAR	$	7,478		$	10,349		$	10,625

Summary_of_Accounting_Policies1

Summary of Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Financial Statement Presentation	'
	Basis of Financial Statement Presentation
	The accounting and reporting policies of the Company and its subsidiaries conform with accounting principles generally accepted in the United States of America (U.S. GAAP) and predominant practices within the banking industry. The consolidated financial statements include the accounts of the Company, Lakeland, Lakeland NJ Investment Corp., Lakeland Investment Corp., Lakeland Equity, Inc., Lakeland Preferred Equity, Inc. and Sullivan Financial Services. All intercompany balances and transactions have been eliminated.
	The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also affect reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Significant estimates implicit in these financial statements are as follows.
	The principal estimates that are particularly susceptible to significant change in the near term relate to the allowance for loan and lease losses, the valuation of the Company’s investment securities portfolio, the realizability of the Company’s deferred tax asset and the analysis of goodwill and intangible impairment. The policies regarding these estimates are discussed below.
	The Company’s operating segments are components of its enterprise for which separate financial information is available and is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assess performance. The Company’s chief operating decision maker is its Chief Executive Officer. All of the Company’s financial services activities are interrelated, and each activity is dependent and assessed based on how each of the activities of the Company supports the others. For example, commercial lending is dependent upon the ability of Lakeland to fund itself with retail deposits and other borrowings and to manage interest rate and credit risk. The situation is also similar for consumer and residential mortgage lending. Moreover, the Company operates in one market area, Northern and Central New Jersey. Therefore, all significant operating decisions are based upon analysis of the Company as one operating segment or unit. Accordingly, the Company has determined that it has one operating segment and thus one reporting segment.
Investment Securities	'
	Investment Securities
	Investment securities are classified in one of three categories: held to maturity, trading, or available for sale. Investments in debt securities, for which management has both the ability and intent to hold to maturity, are carried at cost, adjusted for the amortization of premiums and accretion of discounts computed by the effective interest method. Investments in debt and equity securities, which management believes may be sold prior to maturity due to changes in interest rates, prepayment risk, liquidity requirements, or other factors, are classified as available for sale. Net unrealized gains and losses for such securities, net of tax effect, are reported as other comprehensive income (loss) and excluded from the determination of net income. The Company does not engage in securities trading. Gains or losses on disposition of investment securities are based on the net proceeds and the adjusted carrying amount of the securities sold using the specific identification method. Losses are recorded through the statement of operations when the impairment is considered other-than-temporary, even if a decision to sell has not been made.
	The Company evaluates its portfolio for impairment each quarter. In estimating other-than-temporary losses, the Company considers the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, and whether the Company is more likely than not to sell the security before recovery of its cost basis. If a security has been impaired for more than twelve months, and the impairment is deemed other-than-temporary, a write down will occur in that quarter. If a loss is deemed to be other-than-temporary, it is recognized as a realized loss in the income statement with the security assigned a new cost basis.
	If the Company intends to sell an impaired security, the Company records an other-than-temporary loss in an amount equal to the entire difference between the fair value and amortized cost. If a security is determined to be other-than-temporarily impaired, but the Company does not intend to sell the security, only the credit portion of the estimated loss is recognized in earnings in gain (loss) on securities, with the other portion of the loss recognized in other comprehensive income. If a determination is made that an equity security is other-than-temporarily impaired, the unrealized loss will be recognized as an other-than-temporary impairment charge in non-interest income as a component of gain (loss) on investment securities.
Loans and Leases and Allowance for Loan and Lease Losses	'
	Loans and Leases and Allowance for Loan and Lease Losses
	Loans and leases that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are stated at the amount of unpaid principal and are net of unearned discount, unearned loan fees and an allowance for loan and lease losses.
	Interest income is accrued as earned on a simple interest basis. All unamortized fees and costs related to the loan are amortized over the life of the loan using the interest method. Accrual of interest is discontinued on a loan or lease when management believes, after considering economic and business conditions and collection efforts that the borrower’s financial condition is such that full collection of interest and principal is doubtful. When a loan or lease is placed on such non-accrual status, all accumulated accrued interest receivable is reversed out of current period income.
	Commercial loans and leases are placed on a non-accrual status with all accrued interest and unpaid interest reversed if (a) because of the deterioration in the financial position of the borrower they are maintained on a cash basis (which means payments are applied when and as received rather than on a regularly scheduled basis), (b) payment in full of interest or principal is not expected, or (c) principal and interest have been in default for a period of 90 days or more unless the obligation is both well-secured and in process of collection. Residential mortgage loans are placed on non-accrual status at the time principal and interest have been in default for a period of 90 days or more, except where there exists sufficient collateral to cover the defaulted principal and interest payments, and management’s knowledge of the specific circumstances warrant continued accrual. Consumer loans are generally placed on non-accrual and reviewed for charge-off when principal and interest payments are four months in arrears unless the obligations are well-secured and in the process of collection. Interest thereafter on such charged-off consumer loans is taken into income when received only after full recovery of principal. As a general rule, a non-accrual asset may be restored to accrual status when none of its principal or interest is due and unpaid, satisfactory payments have been received for a sustained period (usually six months), or when it otherwise becomes well-secured and in the process of collection.
	Loans and leases are considered impaired when, based on current information and events, it is probable that Lakeland will be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. Impairment is measured based on the present value of expected cash flows discounted at the loan’s effective interest rate, or as a practical expedient, Lakeland may measure impairment based on a loan’s observable market price, or the fair value of the collateral if the loan is collateral-dependent. Regardless of the measurement method, Lakeland measures impairment based on the fair value of the collateral when it is determined that foreclosure is probable. Most of Lakeland’s impaired loans are collateral-dependent. Lakeland groups impaired commercial loans under $500,000 into a homogeneous pool and collectively evaluates them. Interest received on impaired loans and leases may be recorded as interest income. However, if management is not reasonably certain that an impaired loan and lease will be repaid in full, or if a specific time frame to resolve full collection cannot yet be reasonably determined, all payments received are recorded as reductions of principal.
	Loans are classified as troubled debt restructured loans in cases where borrowers experience financial difficulties and Lakeland makes certain concessionary modifications to contractual terms. Restructured loans typically involve a modification of terms such as a reduction of the stated interest rate, an extended moratorium of principal payments and/or an extension of the maturity date at a stated interest rate lower than the current market rate for a new loan with similar risk. Nonetheless, restructured loans are classified as impaired loans.
	Once an obligation has been restructured because of credit problems, it continues to be considered restructured until paid in full or if all of the following conditions are met: (1) the financial problems of the borrower have been cured; (2) the obligation is returned to a market rate and term; and (3) there has been performance for the longer of the next annual reporting period or six consecutive months. If an obligation has been restructured, it will continue to be classified as impaired until the obligation is fully repaid.
	The allowance for loan and lease losses is established through a provision for loan and lease losses charged to expense. Loan principal considered to be uncollectible by management is charged against the allowance for loan and lease losses. The allowance is an amount that management believes will be adequate to absorb losses on existing loans and leases that may become uncollectible based upon an evaluation of known and inherent risks in the loan and lease portfolio. The evaluation takes into consideration such factors as changes in the nature and size of the loan and lease portfolio, overall portfolio quality, specific problem loans and leases, and current economic conditions which may affect the borrowers’ ability to pay. The evaluation also analyzes historical losses by loan and lease category, and considers the resulting loss rates when determining the reserves on current loan and lease total amounts. Loss reserves for specified problem loans and leases are also detailed. All of the factors considered in the analysis of the adequacy of the allowance for loan and lease losses may be subject to change. To the extent actual outcomes differ from management estimates, additional provisions for loan and lease losses may be required that would adversely impact earnings in future periods.
	The determination of the adequacy of the allowance for loan and lease losses and the periodic provisioning for estimated losses included in the consolidated financial statements is the responsibility of management and the Board of Directors. The evaluation process is undertaken on a quarterly basis.
	Methodology employed for assessing the adequacy of the allowance consists of the following criteria:
		•		The establishment of reserve amounts for all specifically identified classified loans and leases that have been designated as requiring attention by Lakeland or Lakeland’s external loan review consultants.
		•		The establishment of reserves for pools of homogeneous types of loans and leases not subject to specific review, including impaired commercial loans under $500,000, leases, 1 – 4 family residential mortgages, and consumer loans.
		•		The establishment of reserve amounts for the non-classified loans and leases in each portfolio based upon the historical average loss experience for these portfolios and management’s evaluation of key factors.
		•		Lakeland also maintains an unallocated component in its allowance for loan and lease losses. Management believes that the unallocated amount is warranted for inherent factors that cannot be practically assigned to individual loss categories, such as the periodic updating of appraisals on impaired loans, as well as periodic updating of commercial loan credit risk ratings by loan officers and Lakeland’s internal credit review process.
	Consideration is given to the results of ongoing credit quality monitoring processes, the adequacy and expertise of Lakeland’s lending staff, underwriting policies, loss histories, delinquency trends, and the cyclical nature of economic and business conditions. Since many of Lakeland’s loans depend on the sufficiency of collateral as a secondary source of repayment, any adverse trend in the real estate markets could affect underlying values available to protect Lakeland from loss.
	A loan is reviewed for charge-off when it is placed on non-accrual status with a resulting charge-off if the loan is not secured by collateral having sufficient liquidation value to repay the loan and all outstanding interest owed, and the loan is not in the process of collection. Charge-offs are recommended by the Chief Credit Officer and approved by the Board on a monthly basis.
	Lakeland transfers leases to held for sale status when it identifies leases that it intends to sell. At that time, the specific leases are written down to the lower of cost or market value by recording a charge to the allowance for loan and lease losses. Market indications are derived from sale price indications from potential buyers and based on recent sale prices of prior lease pools adjusted for differences in types of collateral and other characteristics. Subsequent declines in fair market value are recorded as a loss on leasing related assets in the statement of operations. Lakeland has no leases designated as held for sale for the years ended December 31, 2013 or 2012.
Bank Premises and Equipment	'
	Bank Premises and Equipment
	Bank premises and equipment, including leasehold improvements, are stated at cost less accumulated depreciation. Depreciation expense is computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are depreciated over the shorter of the estimated useful lives of the improvements or the terms of the related leases.
Other Real Estate Owned and Other Repossessed Assets	'
	Other Real Estate Owned and Other Repossessed Assets
	Other real estate owned (OREO) and other repossessed assets, representing property acquired through foreclosure (or deed-in-lieu-of-foreclosure), are carried at fair value less estimated disposal costs of the acquired property. Costs relating to holding the assets are charged to expense. An allowance for OREO or other repossessed assets is established, through charges to expense, to maintain properties at fair value less estimated costs to sell. Operating results of OREO and other repossessed assets, including rental income and operating expenses, are included in other expenses.
Mortgage Servicing	'
	Mortgage Servicing
	Lakeland performs various servicing functions on loans owned by others. A fee, usually based on a percentage of the outstanding principal balance of the loan, is received for these services. At December 31, 2013 and 2012, Lakeland was servicing approximately $37.8 million and $27.9 million, respectively, of loans for others.
	Lakeland originates mortgages under a definitive plan to sell or securitize those loans and service the loans owned by the investor. Upon the transfer of the mortgage loans in a sale or a securitization, Lakeland records the servicing assets retained. Lakeland records mortgage servicing rights and the loans based on relative fair values at the date of origination and evaluates the mortgage servicing rights for impairment at each reporting period. Lakeland also originates loans that it sells to other banks and does not retain the servicing rights.
	Mortgage loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or estimated fair value. Gains and losses on sales of loans are specifically identified and accounted for in accordance with U.S. GAAP which requires that an entity engaged in mortgage banking activities classify the retained mortgage-backed security or other interest, which resulted from the securitization of a mortgage loan held for sale, based upon its ability and intent to sell or hold these investments. As of December 31, 2013, Lakeland had mortgages classified as held for sale totaling $1.2 million. No mortgage loans were identified as held for sale as of December 31, 2012.
Mortgage Servicing Rights	'
	Mortgage Servicing Rights
	When mortgage loans are sold with servicing retained, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. As of December 31, 2013, Lakeland had originated mortgage servicing rights of $274,000.
	Under the amortization measurement method, Lakeland subsequently measures servicing rights at fair value at each reporting date and records any impairment in value of servicing assets in earnings in the period in which the impairment occurs. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the income statement as commissions and fees, is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan, and are recorded as income when earned.
Transfers of Financial Assets	'
	Transfers of Financial Assets
	Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company-put presumptively beyond the reach of the transferor and its creditors even in bankruptcy or other receivership, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
Customer Derivatives	'
	Customer Derivatives
	Lakeland enters into interest rate swaps (“swaps”) with loan customers to provide a facility to mitigate the fluctuations in the variable rate on the respective loans. These swaps are matched in offsetting terms to swaps that Lakeland enters into with an outside third party. The swaps are reported at fair value in other assets or other liabilities. Lakeland’s swaps qualify as derivatives, but are not designated as hedging instruments, thus any net gain or loss resulting from changes in the fair value is recognized in other non-interest income. Further discussion of Lakeland’s financial derivatives is set forth in Note 18 to the Consolidated Financial Statements.
	The credit risk associated with derivatives executed with customers is similar as that involved in extending loans and is subject to normal credit policies. Collateral may be obtained based on management’s assessment of the customer. The positions of customer derivatives are recorded at fair value and changes in value are included in non-interest income on the consolidated statement of operations.
Restrictions On Cash And Due From Banks	'
	Restrictions On Cash And Due From Banks
	A portion of Lakeland’s cash on hand and on deposit with the Federal Reserve Bank was required to meet regulatory reserve and clearing requirements.
Earnings Per Share	'
	Earnings Per Share
	Earnings per share is calculated on the basis of the weighted average number of common shares outstanding during the year. Basic earnings per share excludes dilution and is computed by dividing income available to common shareholders by the weighted average common shares outstanding during the period. Diluted earnings per share takes into account the potential dilution that could occur if securities or other contracts to issue common stock were exercised and converted into common stock. Unless otherwise indicated, all weighted average, actual shares or per share information in the financial statements have been adjusted retroactively for the effect of stock dividends.
Employee Benefit Plans	'
	Employee Benefit Plans
	The Company has certain employee benefit plans covering substantially all employees. The Company accrues such costs as incurred.
	We recognize the overfunded or underfunded status of pension and postretirement benefit plans in accordance with U.S. GAAP. Actuarial gains and losses, prior service costs or credits, and any remaining transition assets or obligations are recognized as a component of Accumulated Other Comprehensive Income, net of tax effects, until they are amortized as a component of net periodic benefit cost.
Stock-Based Compensation	'
	Stock-Based Compensation
	The Company’s shareholders approved the 2009 Equity Compensation Program, which authorizes the granting of incentive stock options, supplemental stock options, restricted shares and restricted stock units to employees of the Company, including those employees serving as officers and directors of the Company. The plan authorizes the issuance of up to 2.2 million shares in connection with options and awards granted under the 2009 program. The Company’s stock option grants under this plan expire 10 years from the date of grant, ninety days after termination of service other than for cause, or one year after death or disability of the grantee. As of December 31, 2013, the Company has no option or restricted stock awards issued with market or performance conditions attached to them. The Company generally issues shares for option exercises from its treasury stock using the cost method or issues new shares if no treasury shares are available.
	The Company established the 2000 Equity Compensation Program which authorizes the granting of incentive stock options, supplemental stock options and restricted stock to employees of the Company, which includes those employees serving as officers and directors of the Company. The plan authorized 2,488,748 shares of common stock of the Company. All of the Company’s stock option grants expire 10 years from the date of grant, thirty days after termination of service other than for cause, or one year after death or disability of the grantee. The Company has no option or restricted stock awards with market or performance conditions attached to them. No further awards will be granted from the 2000 program.
Statement Of Cash Flows	'
	Statement Of Cash Flows
	Cash and cash equivalents are defined as cash on hand, cash items in the process of collection, amounts due from banks and federal funds sold with an original maturity of three months or less. The following shows supplemental non-cash investing and financing activities for the periods presented:
			2013		2012		2011
			(in thousands)
	Transfer of loans and leases receivable to other real estate owned and other repossessed assets		$	3,565	$	1,068	$	2,482
	Cash paid for income taxes			12,051		9,382		8,874
	Cash paid for interest			10,804		16,334		20,366
	Transfer of leases from held for sale to held for investment			—		—		1,517
	Acquisition of Somerset Hills Bancorp:
	Non-cash assets acquired:
	Investment securities available for sale			1,777		—		—
	Investment securities held for maturity			8,686		—		—
	Loans, including loans held for sale			246,459		—		—
	Goodwill and other intangible assets, net			25,574		—		—
	Other assets			15,653		—		—
	Total non-cash assets acquired			298,149
	Liabilities assumed:
	Deposits			311,801		—		—
	Other liabilities			1,745		—		—
	Total liabilities assumed			313,546		—		—
	Common stock issued and fair value of stock options converted to Lakeland Bancorp stock options			58,919		—		—
Comprehensive Income	'
	Comprehensive Income
	The Company reports comprehensive income in addition to net income (loss) from operations. Comprehensive income is a more inclusive financial reporting methodology that includes disclosure of certain financial information that historically has not been recognized in the calculation of net income.
Goodwill and Other Identifiable Intangible Assets	'
	Goodwill and Other Identifiable Intangible Assets
	The Company has goodwill of $110.0 million at December 31, 2013 which includes $22.9 million from the Somerset Hills acquisition and $87.1 million from prior acquisitions. Total goodwill was $87.1 million at December 31, 2012. The Company recorded $2.7 million in Core Deposit Intangible from the Somerset Hills Acquisition in 2013 and recorded $288,000 in core deposit amortization in 2013. Core deposit intangible was $2.4 million on December 31, 2013 compared to no core deposit intangible on December 31, 2012. Core deposit intangibles were $578,000 at December 31, 2010 which was fully amortized in 2011.
	The Company reviews goodwill for impairment annually as of November 30 or when circumstances indicate a potential for impairment at the reporting unit level. U.S. GAAP requires at least an annual review of the fair value of a Reporting Unit that has goodwill in order to determine if it is more likely than not (that is, a likelihood of more than 50%) that the fair value of a reporting unit is less than its carrying amount, including goodwill. If this qualitative test determines it is unlikely (less than 50% probability) the carrying value of the Reporting Unit is less than its fair value, then the company does not have to perform a Step One impairment test. If the probability is greater than 50%, a Step One goodwill impairment test is required. The Step One test compares the fair value of each reporting unit to the carrying value of its net assets, including goodwill. If the fair value is less than carrying value, the Step Two test is required. The Company has determined that it has one reporting unit, Community Banking.
	The Company performed a qualitative analysis to determine whether “the weight of evidence, the significance of all identified events and circumstances” indicated a greater than 50% likelihood existed that the carrying value of the Reporting Unit exceeded its fair value and if a Step One Test would be required. The Company identified nine qualitative assessments that are relative to the banking industry and to the Company. These factors included macroeconomic factors, banking industry conditions, banking merger and acquisition trends, Lakeland’s historical performance, the Company’s stock price, the expected performance of Lakeland, the change of control premium of the Company versus its peers and other miscellaneous factors. After reviewing and weighting these factors, the Company, as well as a third party adviser, determined as of November 30, 2013 that there was a less than 50% probability that the fair value of the Company was less than its carrying amount. Therefore, no Step One test was required.
Bank Owned Life Insurance	'
	Bank Owned Life Insurance
	Lakeland invests in bank owned life insurance (“BOLI”). BOLI involves the purchasing of life insurance by Lakeland on a chosen group of employees. Lakeland is owner and beneficiary of the policies. At December 31, 2013 and 2012, Lakeland had $56.0 million and $46.1 million, respectively, in BOLI. Income earned on BOLI was $1.4 million, $1.3 million and $1.4 million for the years ended December 31, 2013, 2012 and 2011, respectively. The increase in income earned on BOLI in 2013 compared to 2012 was due to an increase in policies resulting from the Somerset Hills acquisition.
Income Taxes	'
	Income Taxes
	The Company accounts for income taxes under the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities as measured by the enacted tax rates that will be in effect when these differences reverse. Deferred tax expense is the result of changes in deferred tax assets and liabilities. The principal types of differences between assets and liabilities for financial statement and tax return purposes are allowance for loan and lease losses, core deposit intangibles, deferred loan fees and deferred compensation.
	The Company evaluates tax positions that may be uncertain using a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken or expected to be taken on a tax return, in order for those tax positions to be recognized in the financial statements. Additional information regarding the Company’s uncertain tax positions is set forth in Note 9 below.
Variable Interest Entities	'
	Variable Interest Entities
	Management has determined that Lakeland Bancorp Capital Trust II and Lakeland Bancorp Capital Trust IV (collectively, “the Trusts”) qualify as variable interest entities. The Trusts issued mandatorily redeemable preferred stock to investors and loaned the proceeds to the Company. The Trusts hold, as their sole asset, subordinated debentures issued by the Company. The Company is not considered the primary beneficiary of the Trusts, therefore the Trusts are not consolidated in the Company’s financial statements.
	The Company’s maximum exposure to the Trusts is $40 million at December 31, 2013 which is the Company’s liability to the Trusts and includes the Company’s investment in the Trusts.
	The Federal Reserve has issued guidance on the regulatory capital treatment for the trust preferred securities issued by the Trusts. The rule retains the current maximum percentage of total capital permitted for trust preferred securities at 25%, but enacts other changes to the rules governing trust preferred securities that affect their use as part of the collection of entities known as “restricted core capital elements.” The rule allows bank holding companies to continue to count trust preferred securities as Tier 1 Capital. The Company’s capital ratios continue to be categorized as “well-capitalized” under the regulatory framework for prompt corrective action. Under the Collins Amendment to the Dodd-Frank Wall Street Reform and Consumer Protection Act, any new issuance of trust preferred securities by the Company would not be eligible as regulatory capital.
New Accounting Pronouncements	'
	New Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board (the “FASB”) issued an accounting standards update to clarify when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan should be derecognized and the real estate recognized. These amendments clarify that 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: (a) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure; or (b) 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. This update is effective for annual periods and interim periods within those annual periods beginning after December 15, 2014. The adoption of this update is not expected to have a material impact on the Company’s financial statements.
	In July 2013, the Financial Accounting Standards Board (the “FASB”) issued an accounting pronouncement to improve the reporting for unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The pronouncement is expected to reduce diversity in practice by providing guidance on the presentation of unrecognized tax benefits and will better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. The pronouncement is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this pronouncement is not expected to have a material impact on the Company’s financial statements.
	In July 2013, the FASB issued guidance permitting the Fed Funds Effective Swap Rate to be used as a U.S. benchmark interest rate for hedge accounting purposes, in addition to interest rates on direct Treasury obligations of the U.S. government and the London Interbank Offered Rate (“LIBOR”). This guidance is effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013 and is not expected to have a significant impact on the Company’s financial statements.
	In February 2013, the FASB issued guidance relating to the reporting of amounts reclassified out of accumulated other comprehensive income. This guidance further updates guidance issued in 2011 increasing the prominence of items reported in other comprehensive income and facilitating the convergence of U.S. GAAP and International Financial Reporting Standards (“IFRS”). The guidance issued in 2013 requires an entity to provide information about the items reclassified out of other comprehensive income by component. This guidance is effective during interim and annual periods beginning after December 15, 2012, and is to be applied retrospectively. The Company adopted this guidance in the first quarter of 2013. Adoption of this guidance did not have a significant impact on the Company’s consolidated financial statements.
	In December 2011, the FASB issued accounting guidance regarding disclosures about offsetting assets and liabilities. The scope of this accounting guidance was further clarified by the FASB on January 1, 2013. This guidance affects all entities that have financial instruments and derivative instruments that are either (1) offset in accordance with U.S. GAAP or (2) subject to an enforceable master netting arrangement or similar agreement. This information will enable users of an entity’s financial statements to evaluate the effect or potential effect of netting arrangements on an entity’s financial position, including the effect or potential effect of rights of setoff associated with certain financial instruments and derivative instruments in the scope of this guidance. The Company adopted this guidance in the first quarter of 2013 and provided the disclosures required by those amendments retrospectively for all comparative periods presented. Adoption of this guidance did not have a significant impact on the Company’s consolidated financial statements.

Summary_of_Accounting_Policies2

Summary of Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Supplemental Schedule of Non-cash Investing and Financing Activities	'
	The following shows supplemental non-cash investing and financing activities for the periods presented:
		2013		2012		2011
		(in thousands)
	Transfer of loans and leases receivable to other real estate owned and other repossessed assets	$	3,565	$	1,068	$	2,482
	Cash paid for income taxes		12,051		9,382		8,874
	Cash paid for interest		10,804		16,334		20,366
	Transfer of leases from held for sale to held for investment		—		—		1,517
	Acquisition of Somerset Hills Bancorp:
	Non-cash assets acquired:
	Investment securities available for sale		1,777		—		—
	Investment securities held for maturity		8,686		—		—
	Loans, including loans held for sale		246,459		—		—
	Goodwill and other intangible assets, net		25,574		—		—
	Other assets		15,653		—		—
	Total non-cash assets acquired		298,149
	Liabilities assumed:
	Deposits		311,801		—		—
	Other liabilities		1,745		—		—
	Total liabilities assumed		313,546		—		—
	Common stock issued and fair value of stock options converted to Lakeland Bancorp stock options		58,919		—		—

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Summary of Estimated Fair Value of Acquired Assets and Liabilities	'
	The following table summarizes the estimated fair value of the acquired assets and liabilities (in thousands).
	Consideration Paid
	Lakeland Bancorp stock issued	$	57,419
	Cash Payment		6,460
	Fair value of Somerset Hills stock options converted to Lakeland Bancorp stock options		1,500
	Total Consideration Paid	$	65,379
	Recognized amounts of identifiable assets and liabilities assumed at fair value
	Cash and cash equivalents	$	80,776
	Securities available for sale		1,777
	Securities held to maturity		8,686
	Federal Home Loan Bank stock		493
	Loans and leases		243,927
	Loans held for sale		2,532
	Premises and equipment		5,214
	Identifiable intangible assets		2,712
	Accrued interest receivable and other assets		9,946
	Deposits		(311,801	)
	Other liabilities		(1,745	)
	Total identifiable assets	$	42,517
	Goodwill	$	22,862
Summary of Loans Acquired	'
	The following is a summary of the loans acquired in the Somerset Hills acquisition as of the closing date.
	(in thousands)	Acquired			Acquired		Total
		Credit			Non-		Acquired
		Impaired			Credit		Loans
		Loans			Impaired
					Loans
	Contractually required principal and interest at acquisition	$	4,507		$	352,148	$	356,655
	Contractual cash flows not expected to be collected (non-accretable difference)		2,541			—		2,541
	Expected cash flows at acquisition	$	1,966		$	352,148	$	354,114
	Interest component of expected cash flows (accretable difference)		322			107,333		107,655
	Fair value of acquired loans, including mortgages held for sale	$	1,644		$	244,815	$	246,459
Summary of Pro Forma Information	'
	The pro forma information shown reflects adjustments related to certain purchase accounting fair value adjustments; amortization of core deposit and other intangibles; and related income tax effects.
	(in thousands)	Actual from			(unaudited)		(unaudited)
		acquisition to			Pro-forma		Pro-forma
		December 31, 2013			December  31, 2013		December  31, 2012
	Net interest income	$	6,077		$	109,313	$	107,402
	Noninterest income		889			22,096		21,753
	Noninterest expense		3,796			80,731		77,340
	Net income		2,116			27,828		24,277
	Earnings per share:
	Fully diluted				$	0.78	$	0.73
Estimated of Future Amortization Expense	'
	The estimated future amortization expense for each of the succeeding five years ended December 31 is as follows (dollars in thousands):
	For the year ended:
	2014	$	464
	2015		415
	2016		366
	2017		316
	2018		267

Investment_Securities_Tables

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]	'
Reconciliation of Available-for-Sale Securities	'
	The amortized cost, gross unrealized gains and losses, and the fair value of the Company’s available for sale are as follows:
	AVAILABLE FOR SALE	December 31, 2013											December 31, 2012
		Amortized			Gross			Gross			Fair		Amortized		Gross		Gross			Fair
		Cost			Unrealized			Unrealized			Value		Cost		Unrealized		Unrealized			Value
					Gains			Losses							Gains		Losses
		(in thousands)											(in thousands)
	U.S. treasury and U.S. government agencies	$	72,828		$	—		$	(2,663	)	$	70,165	$	86,002	$	577	$	(8	)	$	86,571
	Mortgage-backed securities, residential		310,088			1,752			(7,338	)		304,502		235,052		5,086		(579	)		239,559
	Obligations of states and political subdivisions		36,482			914			(523	)		36,873		36,848		1,832		(60	)		38,620
	Other debt securities		3,541			37			(158	)		3,420		13,576		189		(321	)		13,444
	Equity securities		15,433			1,097			(384	)		16,146		14,984		608		(76	)		15,516
		$	438,372		$	3,800		$	(11,066	)	$	431,106	$	386,462	$	8,292	$	(1,044	)	$	393,710
Reconciliation of Held-to-Maturity Securities	'
	The amortized cost, gross unrealized gains and losses, and the fair value of the Company’s held to maturity are as follows:
	HELD TO MATURITY	December 31, 2013											December 31, 2012
		Amortized			Gross			Gross			Fair		Amortized		Gross		Gross			Fair
		Cost			Unrealized			Unrealized			Value		Cost		Unrealized		Unrealized			Value
					Gains			Losses							Gains		Losses
		(in thousands)											(in thousands)
	U.S. government agencies	$	19,732		$	3		$	(576	)	$	19,159	$	16,089	$	385	$	—		$	16,474
	Mortgage-backed securities, residential		34,596			524			(1,025	)		34,095		39,065		1,313		(27	)		40,351
	Mortgage-backed securities, multifamily		2,355			—			(166	)		2,189		1,421		—		(13	)		1,408
	Obligations of states and political subdivisions		43,521			495			(770	)		43,246		38,801		1,068		(68	)		39,801
	Other debt securities		1,540			165			—			1,705		1,549		201		—			1,750
		$	101,744		$	1,187		$	(2,537	)	$	100,394	$	96,925	$	2,967	$	(108	)	$	99,784
Summary of Contractual Maturities of Investment Securities Classified as Available for Sale and Held to Maturity	'
	The following table lists contractual maturities of investment securities classified as available for sale and held to maturity. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
		December 31, 2013
		Available for Sale						Held to Maturity
		Amortized			Fair			Amortized			Fair
		Cost			Value			Cost			Value
		(in thousands)
	Due in one year or less	$	3,946		$	3,984		$	7,246		$	7,288
	Due after one year through five years		37,961			37,969			18,022			18,519
	Due after five years through ten years		68,141			66,023			32,521			31,635
	Due after ten years		2,803			2,482			7,004			6,668
			112,851			110,458			64,793			64,110
	Mortgage-backed securities		310,088			304,502			36,951			36,284
	Equity securities		15,433			16,146			—			—
	Total securities	$	438,372		$	431,106		$	101,744		$	100,394
Sales of Securities, Gross Gains and Gross Losses on Sales of Securities	'
	The following table shows proceeds from sales of securities, gross gains and gross losses on sales and calls of securities for the periods indicated:
		Years ended December 31,
		2013			2012			2011
		(in thousands)
	Sale proceeds	$	64,020		$	97,824		$	92,409
	Gross gains		893			1,364			1,285
	Gross losses		(54	)		(315	)		(56	)
Reconciliation of Available-for-Sale and Held-to-Maturity Securities in Continuous Unrealized Loss Position	'
	The following table indicates the length of time individual securities have been in a continuous unrealized loss position at December 31, 2013 and 2012:
	December 31, 2013	Less than 12 months						12 months or longer					Total
	AVAILABLE FOR SALE	Fair			Unrealized			Fair			Unrealized		Number of		Fair		Unrealized
		value			Losses			value			Losses		securities		value		Losses
								(dollars in thousands)
	U.S. treasury and U.S. government agencies	$	70,165		$	2,663		$	—		$	—		16	$	70,165	$	2,663
	Mortgage-backed securities, residential		177,262			6,730			10,724			608		51		187,986		7,338
	Obligations of states and political subdivisions		8,500			328			2,087			195		21		10,587		523
	Other debt securities		—			—			805			158		1		805		158
	Equity securities		—			—			10,215			384		3		10,215		384
		$	255,927		$	9,721		$	23,831		$	1,345		92	$	279,758	$	11,066
	HELD TO MATURITY
	U.S. government agencies	$	14,153		$	576		$	—		$	—		5	$	14,153	$	576
	Mortgage-backed securities, residential	$	22,939		$	889		$	1,097		$	136		11	$	24,036	$	1,025
	Mortgage-backed securities, multifamily		895			99			1,294			67		2		2,189		166
	Obligations of states and political subdivisions		17,826			607			1,456			163		51		19,282		770
		$	55,813		$	2,171		$	3,847		$	366		69	$	59,660	$	2,537
	December 31, 2012	Less than 12 months						12 months or longer					Total
	AVAILABLE FOR SALE	Fair			Unrealized			Fair			Unrealized		Number of		Fair		Unrealized
		value			Losses			value			Losses		securities		value		Losses
		(dollars in thousands)
	U.S. government agencies	$	3,992		$	8		$	—		$	—		1	$	3,992	$	8
	Mortgage-backed securities, residential		30,359			572			3,239			7		10		33,598		579
	Obligations of states and political subdivisions		2,825			60			—			—		7		2,825		60
	Other debt securities		—			—			5,661			321		2		5,661		321
	Equity securities		4,621			76			—			—		2		4,621		76
		$	41,797		$	716		$	8,900		$	328		22	$	50,697	$	1,044
	HELD TO MATURITY
	Mortgage-backed securities, residential	$	1,239		$	27		$	—		$	—		1	$	1,239	$	27
	Mortgage-backed securities, multifamily		1,408			13			—			—		1	$	1,408		13
	Obligations of states and political subdivisions		3,705			63			371			5		10		4,076		68
		$	6,352		$	103		$	371		$	5		12	$	6,723	$	108

Loans_and_Leases_and_Other_Rea1

Loans and Leases and Other Real Estate (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Composition of Lakeland`s Loan and Lease Portfolio	'
	The following sets forth the composition of Lakeland’s loan and lease portfolio for the years ended December 31, 2013 and 2012:
			December 31,
			2013			2012
			(in thousands)
	Commercial, secured by real estate		$	1,389,861		$	1,125,137
	Commerical, industrial and other			213,808			216,129
	Leases			41,332			26,781
	Real estate-residential mortgage			432,831			423,262
	Real estate-construction			53,119			46,272
	Home equity and consumer			339,338			309,626
	Total loans and leases			2,470,289			2,147,207
	Less deferred fees			(1,273	)		(364	)
	Loans and leases, net of deferred fees		$	2,469,016		$	2,146,843
Lakeland's Non-Accrual Loans and Leases and Its Accruing Troubled Debt Restructurings	'
	The following schedule sets forth certain information regarding Lakeland’s non-accrual loans and leases, its other real estate owned and other repossessed assets, and accruing troubled debt restructurings:
			At December 31,
	(in thousands)		2013			2012
	Commercial, secured by real estate		$	7,697		$	10,511
	Commercial, industrial and other			88			1,476
	Leases			—			32
	Real estate—residential mortgage			6,141			8,733
	Real estate—construction			831			4,031
	Home equity and consumer			2,175			3,197
	Total non-accrual loans and leases			16,932			27,980
	Other real estate and other repossessed assets			520			529
	TOTAL NON-PERFORMING ASSETS		$	17,452		$	28,509
	Troubled debt restructurings, still accruing		$	10,289		$	7,336
Age Analysis of Past Due Loans, Segregated by Class of Loans	'
	An age analysis of past due loans, segregated by class of loans as of December 31, 2013 and 2012 is as follows:
	December 31, 2013		30-59 Days			60-89 Days			Greater			Total			Current			Total			Recorded
			Past Due			Past Due			Than			Past Due						Loans			Investment  greater
									89 Days									and Leases			than 89 Days and
																					still accruing
			(in thousands)
	Commercial, secured by real estate		$	7,355		$	5,438		$	6,059		$	18,852		$	1,371,009		$	1,389,861		$	697
	Commercial, industrial and other			482			159			20			661			213,147			213,808			—
	Leases			77			179			—			256			41,076			41,332			—
	Real estate—residential mortgage			5,792			1,306			5,365			12,463			420,368			432,831			414
	Real estate—construction			—			—			831			831			52,288			53,119			—
	Home equity and consumer			1,776			533			2,884			5,193			334,145			339,338			886
			$	15,482		$	7,615		$	15,159		$	38,256		$	2,432,033		$	2,470,289		$	1,997
	December 31, 2012		30-59 Days			60-89 Days			Greater			Total			Current			Total			Recorded
			Past Due			Past Due			Than			Past Due						Loans			Investment  greater
									89 Days									and Leases			than 89 Days and
																					still accruing
			(in thousands)
	Commercial, secured by real estate		$	3,831		$	2,308		$	10,511		$	16,650		$	1,108,487		$	1,125,137		$	—
	Commercial, industrial and other			400			171			1,476			2,047			214,082			216,129			—
	Leases			367			36			32			435			26,346			26,781			—
	Real estate—residential mortgage			2,370			821			10,012			13,203			410,059			423,262			1,279
	Real estate—construction			1,100			—			4,031			5,131			41,141			46,272			—
	Home equity and consumer			2,479			363			3,355			6,197			303,429			309,626			158
			$	10,547		$	3,699		$	29,417		$	43,663		$	2,103,544		$	2,147,207		$	1,437
Impaired Loans with and without Specific Allowances	'
	Impaired loans for the year ended December 31, 2013, 2012 and 2011 are as follows:
	December 31, 2013		Recorded			Contractual			Specific			Interest			Average
			Investment in			Unpaid			Allowance			Income			Investment in
			Impaired loans			Principal						Recognized			Impaired loans
						Balance
			(in thousands)
	Loans without specific allowance:
	Commercial, secured by real estate		$	8,223		$	9,656		$	—		$	198		$	8,853
	Commercial, industrial and other			4,020			4,118			—			189			4,333
	Leases			—			—			—			—			—
	Real estate-residential mortgage			617			672			—			—			622
	Real estate-construction			501			2,411			—			—			2,111
	Home equity and consumer			17			17			—			1			17
	Loans with specific allowance:
	Commercial, secured by real estate			10,152			10,217			739			442			9,727
	Commercial, industrial and other			155			155			31			5			396
	Leases			—			—			—			—			—
	Real estate-residential mortgage			—			—			—			—			—
	Real estate-construction			—			—			—			—			—
	Home equity and consumer			934			936			140			42			907
	Total:
	Commercial, secured by real estate		$	18,375		$	19,873		$	739		$	640		$	18,580
	Commercial, industrial and other			4,175			4,273			31			194			4,729
	Leases			—			—			—			—			—
	Real estate—residential mortgage			617			672			—			—			622
	Real estate-construction			501			2,411			—			—			2,111
	Home equity and consumer			951			953			140			43			924
			$	24,619		$	28,182		$	910		$	877		$	26,966
	December 31, 2012		Recorded			Contractual			Specific			Interest			Average
			Investment in			Unpaid			Allowance			Income			Investment in
			Impaired loans			Principal						Recognized			Impaired loans
						Balance
			(in thousands)
	Loans without specific allowance:
	Commercial, secured by real estate		$	16,458		$	21,665		$	—		$	495		$	18,301
	Commercial, industrial and other			4,896			4,932			—			116			3,838
	Leases			—			—			—			—			—
	Real estate-residential mortgage			360			360			—			6			385
	Real estate-construction			3,332			4,433			—			—			5,533
	Home equity and consumer			369			369			—			1			360
	Loans with specific allowance:
	Commercial, secured by real estate			3,346			4,088			368			46			3,825
	Commercial, industrial and other			808			871			219			1			769
	Leases			—			—			—			—			—
	Real estate-residential mortgage			288			288			43			4			374
	Real estate-construction			698			1,085			97			—			1,445
	Home equity and consumer			976			976			146			55			934
	Total:
	Commercial, secured by real estate		$	19,804		$	25,753		$	368		$	541		$	22,126
	Commercial, industrial and other			5,704			5,803			219			117			4,607
	Leases			—			—			—			—			—
	Real estate—residential mortgage			648			648			43			10			759
	Real estate-construction			4,030			5,518			97			—			6,978
	Home equity and consumer			1,345			1,345			146			56			1,294
			$	31,531		$	39,067		$	873		$	724		$	35,764
	December 31, 2011		Recorded			Contractual			Specific			Interest			Average
			Investment in			Unpaid			Allowance			Income			Investment in
			Impaired loans			Principal						Recognized			Impaired loans
						Balance
			(in thousands)
	Loans without specific allowance:
	Commercial, secured by real estate		$	19,648		$	24,922		$	—		$	332		$	14,792
	Commercial, industrial and other			4,074			8,155			—			—			3,445
Leases, including leases held for sale			—			—			—			—			—
Real estate-residential mortgage			415			415			—			29			542
Real estate-construction			12,400			16,353			—			14			11,231
Home equity and consumer			400			485			—			1			14
Loans with specific allowance:
Commercial, secured by real estate			3,920			6,421			392			18			6,209
Commercial, industrial and other			534			647			172			—			768
Leases, including leases held for sale			—			—			—			—			—
Real estate-residential mortgage			561			570			75			19			332
Real estate-construction			244			518			24			—			333
Home equity and consumer			949			963			142			34			800
Total:
Commercial, secured by real estate		$	23,568		$	31,343		$	392		$	350		$	21,001
Commercial, industrial and other			4,608			8,802			172			—			4,213
Leases, including leases held for sale			—			—			—			—			—
Real estate—residential mortgage			976			985			75			48			874
Real estate-construction			12,644			16,871			24			14			11,564
Home equity and consumer			1,349			1,448			142			35			814
		$	43,145		$	59,449		$	805		$	447		$	38,466
Lakeland's Commercial Loan Portfolio	'
	The following table shows Lakeland’s commercial loan portfolio as of December 31, 2013 and 2012, by the risk ratings discussed above (in thousands):
	December 31, 2013		Commercial,			Commercial,
			secured by			Industrial			Real estate-
	Risk Rating		real estate			and other			construction
	1		$	—		$	952		$	—
	2			—			12,964			—
	3			70,811			9,263			—
	4			442,933			60,002			1,178
	5			754,275			85,939			48,243
	5W—Watch			38,893			12,278			—
	6—Other Assets Especially Mentioned			27,640			9,596			1,245
	7—Substandard			55,309			22,814			2,453
	8—Doubtful			—			—			—
	9—Loss			—			—			—
	Total		$	1,389,861		$	213,808		$	53,119
	31-Dec-12		Commercial,			Commercial,
			secured by			Industrial			Real estate-
	Risk Rating		real estate			and other			construction
	1		$	—		$	996		$	—
	2			—			12,899			—
	3			44,448			15,676			—
	4			350,145			62,676			795
	5			623,912			88,033			34,682
	5W—Watch			43,515			13,261			—
	6—Other Assets Especially Mentioned			21,132			2,845			6,535
	7—Substandard			41,817			19,743			4,260
	8—Doubtful			168			—			—
	9—Loss			—			—			—
	Total		$	1,125,137		$	216,129		$	46,272
Allowance for Loan and Lease Losses by Portfolio Segment and Related Recorded Investment in Loans and Leases	'
	The following table details activity in the allowance for loan and lease losses by portfolio segment and the related recorded investment in loans and leases for the years ended December 31, 2013, 2012 and 2011:
	12/31/13		Commercial,			Commercial,			Leases			Real estate-			Real estate-			Home			Unallocated			Total
			secured by			industrial						residential			Construction			equity and
			real estate			and other						mortgage						consumer
			(in thousands)
	Allowance for Loan and Lease Losses:
	Beginning Balance		$	16,258		$	5,103		$	578		$	3,568		$	587		$	2,837		$	—		$	28,931
	Charge-offs			(2,026	)		(1,324	)		(206	)		(1,257	)		(3,854	)		(1,624	)		—			(10,291	)
	Recoveries			1,061			260			121			99			14			283			—			1,838
	Provision			(830	)		1,292			11			804			3,795			1,241			3,030			9,343
	Ending Balance		$	14,463		$	5,331		$	504		$	3,214		$	542		$	2,737		$	3,030		$	29,821
	Ending Balance: Individually evaluated for impairment		$	739		$	31			—		$	—		$	—		$	140		$	—		$	910
	Ending Balance: Collectively evaluated for impairment			13,724			5,300			504			3,214			542			2,597			3,030		$	28,911
	Ending Balance: Loans acquired with deteriorated credit quality			—			—			—			—			—			—			—			—
	Ending Balance		$	14,463		$	5,331		$	504		$	3,214		$	542		$	2,737		$	3,030		$	29,821
	Loans and Leases:
	Ending Balance: Individually evaluated for impairment		$	18,375		$	4,175			—		$	617		$	501		$	951		$	—		$	24,619
	Ending Balance: Collectively evaluated for impairment			1,371,486			209,633			41,332			432,214			52,618			337,976			—		$	2,445,259
	Ending Balance: Loans acquired with deteriorated credit quality			—			—			—			—			—			411			—		$	411
	Ending Balance(1)		$	1,389,861		$	213,808		$	41,332		$	432,831		$	53,119		$	339,338		$	—		$	2,470,289
	-1	Excludes deferred fees
	12/31/12		Commercial,			Commercial,			Leases			Real estate-			Real estate-			Home			Total
			secured by			industrial						residential			Construction			equity and
			real estate			and other						mortgage						consumer
			(in thousands)
	Allowance for Loan and Lease Losses:
	Beginning Balance		$	16,618		$	3,477		$	688		$	3,077		$	1,424		$	3,132		$	28,416
	Charge-offs			(7,287	)		(949	)		(999	)		(1,822	)		(2,888	)		(2,074	)		(16,019	)
	Recoveries			280			428			504			66			43			306			1,627
	Provision			6,647			2,147			385			2,247			2,008			1,473			14,907
	Ending Balance		$	16,258		$	5,103		$	578		$	3,568		$	587		$	2,837		$	28,931
	Ending Balance: Individually evaluated for impairment		$	368		$	219		$	—		$	43		$	97		$	146		$	873
	Ending Balance: Collectively evaluated for impairment			15,890			4,884			578			3,525			490			2,691		$	28,058
	Ending Balance		$	16,258		$	5,103		$	578		$	3,568		$	587		$	2,837		$	28,931
	Loans and Leases:
	Ending Balance: Individually evaluated for impairment		$	19,804		$	5,704		$	—		$	648		$	4,030		$	1,345		$	31,531
	Ending Balance: Collectively evaluated for impairment			1,105,333			210,425			26,781			422,614			42,242			308,281		$	2,115,676
	Ending Balance(1)		$	1,125,137		$	216,129		$	26,781		$	423,262		$	46,272		$	309,626		$	2,147,207
	-1	Excludes deferred costs
	12/31/11		Commercial,			Commercial,			Leases			Real estate-			Real estate-			Home			Total
			secured by			industrial						residential			Construction			equity and
			real estate			and other						mortgage						consumer
			(in thousands)
	Allowance for Loan and Lease Losses:
	Beginning Balance		$	11,366		$	5,113		$	3,477		$	2,628		$	2,176		$	2,571		$	27,331
	Charge-offs			(5,352	)		(5,249	)		(2,858	)		(1,772	)		(3,636	)		(3,010	)		(21,877	)
	Recoveries			2,084			439			1,206			32			67			318			4,146
	Provision			8,520			3,174			(1,137	)		2,189			2,817			3,253			18,816
	Ending Balance		$	16,618		$	3,477		$	688		$	3,077		$	1,424		$	3,132		$	28,416
	Ending Balance: Individually evaluated for impairment		$	392		$	172		$	—		$	75		$	24		$	142		$	805
	Ending Balance: Collectively evaluated for impairment			16,226			3,305			688			3,002			1,400			2,990		$	27,611
	Ending Balance		$	16,618		$	3,477		$	688		$	3,077		$	1,424		$	3,132		$	28,416
	Loans and Leases:
	Ending Balance: Individually evaluated for impairment		$	23,568		$	4,608		$	—		$	976		$	12,644		$	1,349		$	43,145
	Ending Balance: Collectively evaluated for impairment			989,414			205,307			28,879			405,246			66,494			302,841		$	1,998,181
	Ending Balance(1)		$	1,012,982		$	209,915		$	28,879		$	406,222		$	79,138		$	304,190		$	2,041,326
	-1	Excludes deferred costs
Summary of Restructured Loans	'
	The following table summarizes loans that have been restructured during the periods presented:
			For the year ended									For the year ended
			December 31, 2013									December 31, 2012
			Number of			Pre-			Post-			Number of			Pre-			Post-
			Contracts			Modification			Modification			Contracts			Modification			Modification
						Outstanding			Outstanding						Outstanding			Outstanding
						Recorded			Recorded						Recorded			Recorded
						Investment			Investment						Investment			Investment
			(Dollars in thousands)									(Dollars in thousands)
	Troubled Debt Restructurings:
	Commercial, secured by real estate			8		$	3,637		$	2,988			10		$	2,231		$	2,231
	Commercial, industrial and other			1			127			121			6			4,421			4,421
	Leases			—			—			—			—			—			—
	Real estate—residential mortgage			1			179			179			—			—			—
	Real estate—construction			—			—			—			—			—			—
	Home equity and consumer			2			158			157			1			55			55
				12		$	4,101		$	3,445			17		$	6,707		$	6,707
Summary of Restructured Debt within Last 12 Months that have Subsequently Defaulted	'
	The following table summarizes as of December 31, 2013 and 2012, loans that were restructured within the last 12 months that have subsequently defaulted:
			For the year ended						For the year ended
			December 31, 2013						December 31, 2012
			Number  of			Recorded			Number  of			Recorded
			Contracts			Investment			Contracts			Investment
			(Dollars in thousands)						(Dollars in thousands)
	Defaulted Troubled Debt Restructurings:
	Commercial, secured by real estate			—		$	—			2		$	272
	Commercial, industrial and other			—			—			1			142
	Leases			—			—			—			—
	Real estate—residential mortgage			—			—			—			—
	Real estate—construction			—			—			—			—
	Home equity and consumer			1			147			—			—
				1		$	147			3		$	414
Summary of Gains on Leasing Related Assets	'
	The following table shows the components of gains on leasing related assets for the periods presented:
			For the years ended
			December 31,
	(in thousands)		2013			2012			2011
	Gains on sales of leases		$	—		$	—		$	143
	Realized gains on paid off leases			51			471			883
	Gains (losses) on sales of other repossessed assets			12			4			(52	)
	Total gains on leasing related assets		$	63		$	475		$	974
Summary of Future Minimum Lease Payments of Lease Receivables	'
	Future minimum lease payments of lease receivables are as follows (in thousands):
	2014		$	14,387
	2015			11,634
	2016			8,255
	2017			5,155
	2018			1,716
	thereafter			185
			$	41,332

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Summary of Premises and Equipment	'
		Estimated	December 31,
		useful lives	2013		2012
			(in thousands)
	Land	Indefinite	$	6,259	$	5,245
	Buildings and building improvements	10 to 50 years		34,607		30,818
	Leasehold improvements	10 to 25 years		9,997		8,405
	Furniture, fixtures and equipment	2 to 30 years		37,054		31,443
				87,917		75,911
	Less accumulated depreciation and amortization			50,769		42,631
			$	37,148	$	33,280

Time_Deposits_Tables

Time Deposits (Tables)	12 Months Ended
	Dec. 31, 2013
Banking And Thrift [Abstract]	'
Schedule of Maturities of Certificates of Deposit	'
	At December 31, 2013, the schedule of maturities of certificates of deposit is as follows (in thousands):
	Year
	2014	$	214,479
	2015		46,981
	2016		14,823
	2017		17,974
	2018		1,136
	Thereafter		693
		$	296,086

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Summary of Information Relating to Securities Sold Under Agreements to Repurchase and Federal Funds Purchased	'
	The following tables summarize information relating to securities sold under agreements to repurchase and federal funds purchased for the years presented. For purposes of the tables, the average amount outstanding was calculated based on a daily average.
	Federal funds purchased:
		2013			2012			2011
		(dollars in thousands)
	Balance at December 31	$	50,000		$	72,000		$	28,000
	Interest rate at December 31		0.37	%		0.37	%		0.32	%
	Maximum amount outstanding at any month-end during the year	$	81,000		$	72,000		$	35,750
	Average amount outstanding during the year	$	8,424		$	15,147		$	6,674
	Weighted average interest rate during the year		0.34	%		0.35	%		0.41	%
	Securities sold under agreements to repurchase:
		2013			2012			2011
		(dollars in thousands)
	Balance at December 31	$	31,991		$	45,289		$	44,131
	Interest rate at December 31		0.02	%		0.05	%		0.09	%
	Maximum amount outstanding at any month-end during the year	$	48,315		$	49,863		$	60,818
	Average amount outstanding during the year	$	37,277		$	44,434		$	52,566
	Weighted average interest rate during the year		0.03	%		0.06	%		0.12	%
Summary of FHLB Debt Matures	'
	FHLB debt matures as follows (in thousands):
	2014	$	30,000
	2015		10,000
	2016		10,000
	2017		4,000
	2018		15,000
	Thereafter		—
		$	69,000
Summary of Long-Term Securities Sold Under Agreements to Repurchase Mature	'
	These long-term securities sold under agreements to repurchase mature as follows (in thousands):
	2014	$	—
	2015		—
	2016		10,000
	2017		10,000
	2018		10,000
	Thereafter		20,000
		$	50,000

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Components of Income Taxes	'
	The components of income taxes are as follows:
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Current tax provision	$	12,286		$	9,520		$	8,540
	Deferred tax provision		164			576			172
	Total provision for income taxes	$	12,450		$	10,096		$	8,712
Summary of Income Tax Provision Reconciled to Income Taxes that Computed at Statutory Federal Rate	'
	The income tax provision reconciled to the income taxes that would have been computed at the statutory federal rate of 35% is as follows:
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	Federal income tax, at statutory rates	$	13,097		$	11,143		$	9,999
	Increase (deduction) in taxes resulting from:
	Non-taxable interest income		(1,370	)		(1,296	)		(1,387	)
	State income tax, net of federal income tax effect		339			192			246
	Other, net		384			57			(146	)
	Provision for income taxes	$	12,450		$	10,096		$	8,712
Summary of Net Deferred Tax Asset	'
	The net deferred tax asset consisted of the following:
		December 31,
		2013			2012
		(in thousands)
	Deferred tax assets:
	Allowance for loan and lease losses	$	12,688		$	12,271
	Share based compensation plans		553			356
	Purchase accounting fair market value adjustments		688			—
	Non-accrued interest		389			627
	Deferred compensation		1,671			1,357
	Other than temporary impairment loss on investment securities		255			374
	Unrealized losses on securities available for sale		2,620			—
	Unfunded pension benefits		20			298
	Other, net		771			590
	Deferred tax assets		19,655			15,873
	Deferred tax liabilities:
	Core deposit intangible from acquired companies		990			—
	Deferred loan costs		1,338			1,365
	Prepaid expenses		457			377
	Depreciation and amortization		1,514			1,172
	Deferred gain on securities		194			194
	Unrealized gains on securities available for sale		—			2,695
	Other		659			531
	Deferred tax liabilities		5,152			6,334
	Net deferred tax assets, included in other assets	$	14,503		$	9,539
Reconciliation of Unrecognized Tax Benefits	'
	A reconciliation of the beginning and ending amount of unrecognized tax benefits are as follows:
	(in thousands)	2013			2012
	Balance at January 1	$	168		$	252
	Additions for tax positions of prior years		12			22
	Reductions for tax positions resulting from lapse of statute of limitations		(52	)		(106	)
	Settlements		(17	)		—
	Balance at December 31	$	111		$	168

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Earnings Per Share	'
	The following tables present the computation of basic and diluted earnings per share for the periods presented.
	Year ended December 31, 2013
		Income		Shares		Per share
		(numerator)		(denominator)		amount
		(in thousands, except per share amounts)
	Basic earnings per share
	Net income available to common shareholders	$	24,969		33,088	$	0.75
	Less: earnings allocated to participating securities		178				0
	Net income available to common shareholders	$	24,791		33,088	$	0.75
	Effect of dilutive securities
	Stock options and restricted stock		—		152		—
	Diluted earnings per share
	Net income available to common shareholders plus assumed conversions	$	24,791		33,240	$	0.75
	Year ended December 31, 2012
		Income		Shares		Per share
		(numerator)		(denominator)		amount
		(in thousands, except per share amounts)
	Basic earnings per share
	Net income available to common shareholders	$	21,122		27,619	$	0.76
	Less: earnings allocated to participating securities		181				0
	Net income available to common shareholders	$	20,941		27,619	$	0.76
	Effect of dilutive securities
	Stock options and restricted stock		—		73		—
	Diluted earnings per share
	Net income available to common shareholders plus assumed conversions	$	20,941		27,692	$	0.76
	Year ended December 31, 2011
		Income		Shares		Per share
		(numerator)		(denominator)		amount
		(in thousands, except per share amounts)
	Basic earnings per share
	Net income available to common shareholders	$	17,684		26,572	$	0.67
	Less: earnings allocated to participating securities		130				0.01
	Net income available to common shareholders	$	17,554		26,572	$	0.66
	Effect of dilutive securities
	Stock options and restricted stock		—		109		—
	Diluted earnings per share
	Net income available to common shareholders plus assumed conversions	$	17,554		26,681	$	0.66

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Fair Value and Portfolio Allocations of Plan Assets	'
	The following table shows the fair value and the portfolio allocations of the assets in the Plan by type of investment as of December 31 for the years presented (dollars in thousands):
		December 31, 2013						December 31, 2012
		Market			Percent of			Market			Percent of
		Value			Assets			Value			Assets
	Cash and cash equivalents	$	89			5	%	$	125			7	%
	Fixed Income Mutual funds		568			29	%		513			29	%
	U.S. Large-Cap funds		466			23	%		394			22	%
	U.S. Mid- and Small-Cap funds		148			7	%		124			7	%
	U.S. Balanced funds		315			16	%		252			14	%
	International funds		301			15	%		275			16	%
	Commodity funds		100			5	%		83			5	%
		$	1,987			100	%	$	1,766			100	%
Summary of Accumulated Benefit Obligation	'
	The accumulated benefit obligation as of December 31 is as follows:
	(in thousands)	2013			2012
	Accumulated postretirement benefit obligation	$	2,407		$	2,200
	Interest Cost		90			87
	Actuarial (gain) loss		(295	)		176
	Estimated benefit payments		(175	)		(56	)
	Total accumulated postretirement benefit obligation		2,027			2,407
	Fair value of plan assets beginning of period		1,766			1,484
	Return on plan assets		236			178
	Benefits paid		(175	)		(56	)
	Contribution		160			160
	Fair value of plan assets at end of year		1,987			1,766
	Funded status		(40	)		(641	)
	Unrecognized net actuarial loss		—			—
	Liability	$	(40	)	$	(641	)
	Accumulated benefit obligation	$	2,027		$	2,407
Components of Net Periodic Pension Cost	'
	The components of net periodic pension cost are as follows:
	(in thousands)	2013			2012			2011
	Amortization of actuarial loss	$	82		$	72		$	47
	Interest cost on APBO		90			87			97
	Expected return on plan assets		(72	)		(76	)		(89	)
	Net periodic postretirement cost	$	100		$	83		$	55
Benefits Expected to be Paid	'
	The benefits expected to be paid in each of the next five years and the aggregate for the five fiscal years thereafter are as follows (in thousands):
	2014	$	138
	2015		65
	2016		153
	2017		178
	2018		142
	2018—2022		577
Summary of Assumptions Used to Determine Pension Obligation and Net Periodic Pension Cost	'
	The assumptions used to determine the pension obligation and the net periodic pension cost were as follows:
		2013			2012
	Discounted rate		4.75	%		3.75	%
	Expected return on plan assets		4.75	%		4	%
	Rate of Compensation		0	%		0	%
Director [Member]	'
Components of Net Periodic Pension Cost	'
		Years ended December 31,
		2013			2012			2011
		(in thousands)
	Net periodic plan cost included the following components:
	Service cost	$	29		$	30		$	24
	Interest cost		36			41			48
	Amortization of prior service cost		21			26			23
		$	86		$	97		$	95
Benefits Expected to be Paid	'
	The director’s retirement plan holds no plan assets. The benefits expected to be paid in each of the next five years and in aggregate for the five years thereafter are as follows (in thousands):
	2014	$	65
	2015		75
	2016		75
	2017		70
	2018		68
	2019-2023		175

Directors_Retirement_Plan_Tabl

Directors Retirement Plan (Tables) (Director [Member])	12 Months Ended
	Dec. 31, 2013
Director [Member]	'
Status of Directors Retirement Plan	'
	The measurement date for the accumulated benefit obligation is December 31 of the years presented.
		December 31,
		2013			2012
		(in thousands)
	Accrued plan cost included in other liabilities	$	885		$	1,093
	Amount not recognized as component of net postretirement benefit cost
	Recognized in accumulated other comprehensive income
	Net actuarial (gain) loss	($	198	)	$	82
	Unrecognized prior service cost		—			—
	Amounts not recognized as a component of net	($	198	)	$	82
	postretirement benefit cost (benefit)

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Weighted Average Assumptions Used to Estimate Options Using Black-Scholes Option Pricing Model	'
	The fair value of these options were estimated using the Black-Scholes pricing model with the following weighted average assumptions:
	Risk-free interest rates		1.55	%
	Expected dividend yield		2.82	%
	Expected volatility		45.45	%
	Expected lives (years)		7
	Weighted average fair value of options granted	$	3.48
Summary of Status of Company's Option Plans and Changes During Year	'
	A summary of the status of the Company’s option plans as of December 31, 2013 and the changes during the year ending on that date is represented below.
		Number of			Weighted		Weighted		Aggregate
		shares			average		average		Intrinsic
					exercise		remaining		Value
					price		contractual
							term
							(in years)
	Outstanding, beginning of year		475,697		$	12.31			$	53,853
	Granted		426,372			7.03
	Exercised		(346,869	)		7.41
	Expired		(56,687	)		12.14
	Forfeited		(8,393	)		12.95
	Outstanding, end of year		490,120		$	11.19		3.48	$	754,938
	Options exercisable at year-end		444,607		$	11.35		2.91	$	633,585
Summary of Company's Non-Vested Options Under Company's Option Plans	'
	A summary of the Company’s non-vested options under the Company’s option plans as of December 31, 2013 and changes for the year then ended is presented below.
	Non-vested Options	Shares			Weighted-
					Average
					Grant-
					date Fair
					Value
	Non-vested, January 1, 2013		11,026		$	3.11
	Granted		50,000			3.48
	Vested		(15,513	)		3.36
	Non-vested, December 31, 2013		45,513		$	3.43
Summary of Company's Restricted Stock	'
	Information regarding the Company’s restricted stock for the year ended December 31, 2013 is as follows:
		Number of			Weighted
		shares			average
					price
	Outstanding, January 1, 2013		222,556		$	9.15
	Granted		104,182			9.87
	Vested		(72,396	)		8.65
	Forfeited		(4,561	)		9.99
	Outstanding, December 31, 2013		249,781		$	9.58
Somerset Hills Bancorp [Member]	'
Summary of Weighted Average Assumptions Used to Estimate Options Using Black-Scholes Option Pricing Model	'
	The fair value of these options were estimated using the Black Scholes pricing model with the following range of assumptions:
	Risk-free interest rates	0.04%—1.55%
	Expected dividend yield	2.82%
	Expected volatility	13% to 47%
	Expected lives (years)	3 months—7 years
	Weighted average fair value of options granted	$3.98

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Aggregate Future Minimum Commitments of Lease Payments	'
	At December 31, 2013, the minimum commitments under all noncancellable leases with remaining terms of more than one year and expiring through 2032 are as follows (in thousands):
	Year
	2014	$	2,526
	2015		2,296
	2016		1,934
	2017		1,550
	2018		1,306
	Thereafter		10,287
		$	19,899

Financial_Instruments_with_Off1

Financial Instruments with Off-Balance-Sheet Risk and Concentrations of Credit Risk (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Summary of Approximate Contract Amounts of Collateral or Other Security to Support Financial Instruments with Credit Risk	'
	Lakeland generally requires collateral or other security to support financial instruments with credit risk. The approximate contract amounts are as follows:
		December 31,
		2013		2012
		(in thousands)
	Financial instruments whose contract amounts represent credit risk
	Commitments to extend credit	$	589,619	$	430,641
	Standby letters of credit and financial guarantees written		9,244		7,922

Comprehensive_Income_Tables

Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Components of Other Comprehensive Income	'
	The following table shows the changes in the balances of each of the components of other comprehensive income for the periods presented:
			Year ended December 31, 2013
			Before tax			Tax			Net of
			amount			Benefit			tax amount
						(Expense)
			(dollars in thousands)
	Unrealized losses on available for sale securities
	Unrealized holding losses arising during period		$	(13,675	)	$	4,985		$	(8,690	)
	Less reclassification adjustment for net gains realized in net income			839			(330	)		509
	Net unrealized losses on available for sale securities			(14,514	)		5,315			(9,199	)
	Change in pension liabilities			866			(278	)		588
	Other comprehensive loss, net		$	(13,648	)	$	5,037		$	(8,611	)
			Year ended December 31, 2012
			Before			Tax			Net of
			tax			Benefit			tax
			amount			(Expense)			amount
			(dollars in thousands)
	Unrealized gains on available for sale securities
	Unrealized holding gains arising during period		$	2,697		$	(969	)	$	1,728
	Less reclassification adjustment for net gains realized in net income			1,049			(367	)		682
	Net unrealized gains on available for sale securities			1,648			(602	)		1,046
	Change in pension liabilities			30			(11	)		19
	Other comprehensive income, net		$	1,678		$	(613	)	$	1,065
			Year ended December 31, 2011
			Before			Tax			Net of
			tax			Benefit			tax
			amount			(Expense)			amount
			(dollars in thousands)
	Unrealized gains on available for sale securities
	Unrealized holding gains arising during period		$	8,600		$	(3,155	)	$	5,445
	Less reclassification adjustment for net gains realized in net income			1,229			(430	)		799
	Net unrealized gains on available for sale securities			7,371			(2,725	)		4,646
	Change in pension liabilities			(176	)		74			(102	)
	Other comprehensive income, net		$	7,195		$	(2,651	)	$	4,544
Summary of Changes in Accumulated Other Comprehensive Income	'
			For the Year  Ended									For the Year  Ended									For the Year  Ended
			31-Dec-13									31-Dec-12									31-Dec-11
			Unrealized			Pension Items			Total			Unrealized			Pension Items			Total			Unrealized			Pension Items			Total
			Gains and									Gains and									Gains and
			Losses on									Losses on									Losses on
			Available-									Available-									Available-
			for-sale									for-sale									for-sale
			Securities									Securities									Securities
	Beginning Balance		$	4,552		($	616	)	$	3,936		$	3,506		($	635	)	$	2,871		($	1,140	)	($	533	)	($	1,673	)
			(in thousands)
	Other comprehensive income (loss) before classifications			(8,690	)		588			(8,102	)		1,728			19			1,747			5,445			(102	)		5,343
	Amounts reclassified from accumulated other comprehensive income			(509	)		—			(509	)		(682	)		—			(682	)		(799	)		—			(799	)
	Net current period other comprehensive income (loss)			(9,199	)		588			(8,611	)		1,046			19			1,065			4,646			(102	)		4,544
	Ending balance		($	4,647	)	($	28	)	($	4,675	)	$	4,552		($	616	)	$	3,936		$	3,506		($	635	)	$	2,871
	*	All amounts are net of tax.

Fair_Value_Measurement_and_Fai1

Fair Value Measurement and Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Financial Assets and Liabilities are Classified	'
	Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:
	December 31, 2013		Quoted Prices in		Significant		Significant		Total
			Active Markets		Other		Unobservable		Fair Value
			for Identical		Observable		Inputs
			Assets		Inputs		(Level 3)
			(Level 1)		(Level 2)
			(in thousands)
	Assets:
	Investment securities, available for sale
	U.S. treasury and government agencies		$	4,330		65,835	$	—	$	70,165
	Mortgage backed securities			—		304,502		—		304,502
	Obligations of states and political subdivisions			—		36,873		—		36,873
	Corporate debt securities			—		3,420		—		3,420
	Equity securities			3,239		12,907		—		16,146
	Total securities available for sale			7,569		423,537		—		431,106
	Other Assets(a)			—		562		—		562
	Total Assets		$	7,569		424,099		—	$	431,668
	Other Liabilities(a)		$	—	$	562	$	—	$	562
	Total Liabilities		$	—	$	562	$	—	$	562
	(a)	Non-hedging interest rate derivatives
	December 31, 2012
	Assets:
	Investment securities, available for sale
	U.S. treasury and government agencies		$	3,493	$	83,078	$	—	$	86,571
	Mortgage backed securities			—		239,559		—		239,559
	Obligations of states and political subdivisions			—		38,620		—		38,620
	Corporate debt securities			—		13,444		—		13,444
	Equity securities			2,010		13,506		—		15,516
	Total securities available for sale			5,503		388,207		—		393,710
	Other Assets(a)			—		195		—		195
	Total Assets		$	5,503	$	388,402	$	—	$	393,905
	Other Liabilities(a)		$	—	$	195	$	—	$	195
	Total Liabilities		$	—	$	195	$	—	$	195
	(a)	Non-hedging interest rate derivatives
Assets are Classified in their Entirety Based on Lowest Level of Input that is Significant to Fair Value Measurement	'
	The following table sets forth the Company’s financial assets subject to fair value adjustments (impairment) on a nonrecurring basis. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:
	31-Dec-13		(Level 1)		(Level 2)		(Level 3)		Total
									Fair Value
			(in thousands)
	Assets:
	Impaired Loans and Leases		$	—	$	—	$	26,402	$	26,402
	Loans held for sale			—		1,206		—		1,206
	Other real estate owned and other repossessed assets			—		—		520		520
	31-Dec-12		(Level 1)		(Level 2)		(Level 3)		Total
									Fair  Value
			(in thousands)
	Assets:
	Impaired Loans and Leases		$	—	$	—	$	31,531	$	31,531
	Other real estate owned and other repossessed assets			—		—		529		529
Carrying Values and Fair Values of Company's Financial Instruments	'
	The following table presents the carrying values, fair values and placement in the fair value hierarchy of the Company’s financial instruments as of December 31, 2013 and December 31, 2012:
	December 31, 2013		Carrying		Fair		Quoted Prices in		Significant		Significant
			Value		Value		Active Markets		Other		Unobservable
							for Identical		Observable		Inputs
							Assets		Inputs		(Level 3)
							(Level 1)		(Level 2)
			(in thousands)
	Financial Instruments—Assets
	Investment securities held to maturity		$	101,744	$	100,394	$	—	$	95,194	$	5,200
	Federal Home Loan and other membership bank stock			7,938		7,938		—		7,938		—
	Loans and leases, net			2,439,195		2,432,447		—		—		2,432,447
	Financial Instruments—Liabilities
	Certificates of Deposit			296,086		296,237		—		296,237		—
	Other borrowings			119,000		121,870		—		121,870		—
	Subordinated debentures			41,238		27,835		—		—		27,835
	31-Dec-12
	Financial Assets:
	Investment securities held to maturity		$	96,925	$	99,784	$	—	$	87,336	$	12,448
	Federal Home Loan and other membership bank stock			5,382		5,382		—		5,382		—
	Loans and leases			2,146,843		2,154,507		—		—		2,154,507
	Financial Liabilities:
	Certificates of Deposit			303,792		305,398		—		305,398		—
	Other borrowings			85,000		91,325		—		91,325		—
	Subordinated debentures			51,548		33,403		—		—		33,403

Derivatives_Tables

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Summary Information Regarding Derivatives	'
	The following table presents summary information regarding these derivatives for the periods presented (dollars in thousands):
	December 31, 2013	Notional Amount			Average			Weighted Average			Weighted Average		Fair Value
					Maturity (Years)			Rate Fixed			Variable Rate
	3rd party interest rate swaps	$	17,691			6.7			3.83	%		1Mo Libor + 2.21	($	562	)
	Customer interest rate swaps		(17,691	)		6.7			3.83	%		1Mo Libor + 2.21		562
	December 31, 2012	Notional Amount			Average			Weighted Average			Weighted Average		Fair Value
					Maturity(Years)			Rate Fixed			Variable Rate
	3rd party interest rate swaps	$	6,400			10.1			4.625	%		1Mo Libor + 2.61	$	195
	Customer interest rate swaps		(6,400	)		10.1			4.625	%		1Mo Libor + 2.61	($	195	)
Enforceable Master Netting Arrangement	'
	The following shows Lakeland’s transactions that are subject to an enforceable master netting arrangement or other such similar agreements for the periods presented:
	December 31, 2013
	Offsetting of Financial Assets and Derivative Assets							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Assets			Instruments
		Assets			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Customer interest rate swaps	$	17,691		($	17,129	)	$	562		$	—
	Total	$	17,691		($	17,129	)	$	562		$	—
	Offsetting of Financial Liabilities and Derivative Liabilities							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Liabilities			Instruments
		Liabilities			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Third party interest rate swaps	$	17,691		($	17,129	)	$	562		$	—
	Total	$	17,691		($	17,129	)	$	562		$	—
	December 31, 2012
	Offsetting of Financial Assets and Derivative Assets							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Assets			Instruments
		Assets			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Third party interest rate swaps	$	6,400		($	6,205	)	$	195		$	—
	Total	$	6,400		($	6,205	)	$	195		$	—
	Offsetting of Financial Liabilities and Derivative Liabilities							Gross Amounts not Offset in
								the Balance Sheet
		Gross Amounts			Gross Amounts			Net Amounts of			Financial
		of Recognized			Offset in the			Liabilities			Instruments
		Liabilities			Balance Sheet			Presented in the
								Balance Sheet
		(in thousands)
	Description
	Customer interest rate swaps	$	6,400		($	6,205	)	$	195		$	—
	Total	$	6,400		($	6,205	)	$	195		$	—

Regulatory_Matters_Tables

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2013
Banking And Thrift [Abstract]	'
Summary of Capital Ratios	'
	As of December 31, 2013 and 2012, the Company and Lakeland have the following capital ratios:
		Actual					For capital					To be well capitalized
							adequacy purposes					under prompt corrective
												action provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(dollars in thousands)
	As of December 31, 2013
	Total capital (to risk-weighted assets)
	Company	$	313,499		12.98	%	>$	193,166		> 8.00	%		N/A		N/A
	Lakeland		296,334		12.29			192,819		8		> $	241,023		> 10.00	%
	Tier 1 capital (to risk-weighted assets)
	Company	$	283,307		11.73	%	>$	96,583		> 4.00	%		N/A		N/A
	Lakeland		266,195		11.04			96,409		4			> 144,614		> 6.00	%
	Tier 1 capital (to average assets)
	Company	$	283,307		8.9	%	>$	127,281		> 4.00	%		N/A		N/A
	Lakeland		266,195		8.38			127,104		4			> 158,879		> 5.00	%
		Actual					For capital					To be well capitalized
							adequacy purposes					under prompt corrective
												action provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(dollars in thousands)
	As of December 31, 2012
	Total capital (to risk-weighted assets)
	Company	$	265,894		12.77	%	>$	166,561		> 8.00	%		N/A		N/A
	Lakeland		247,680		11.92			166,273		8			> 207,842		> 10.00	%
	Tier 1 capital (to risk-weighted assets)
	Company	$	239,819		11.52	%		> 83,281		> 4.00	%		N/A		N/A
	Lakeland		221,650		10.66			83,137		4			> 124,705		> 6.00	%
	Tier 1 capital (to average assets)
	Company	$	239,819		8.62	%		> 111,256		> 4.00	%		N/A		N/A
	Lakeland		221,650		7.98			111,082		4			> 138,852		> 5.00	%

Condensed_Financial_Informatio1

Condensed Financial Information - Parent Company Only (Tables)	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]	'
Condensed Balance Sheets	'
	CONDENSED BALANCE SHEETS
		December 31,
		2013			2012
		(in thousands)
	ASSETS
	Cash and due from banks	$	7,478		$	10,349
	Investment securities available for sale		3,248			2,375
	Investment in subsidiaries		374,738			313,575
	Other assets		7,530			6,461
	TOTAL ASSETS	$	392,994		$	332,760
	LIABILITIES AND STOCKHOLDERS’ EQUITY
	Other liabilities	$	332		$	345
	Subordinated debentures		41,238			51,548
	Common stockholders’ equity		351,424			280,867
	TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	392,994		$	332,760
Condensed Statements of Operations	'
	CONDENSED STATEMENTS OF OPERATIONS
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	INCOME
	Dividends from subsidiaries	$	20,916		$	31,300		$	31,845
	Other income		1,640			403			227
	TOTAL INCOME		22,556			31,703			32,072
	EXPENSE
	Interest on subordinated debentures		1,286			3,664			4,443
	Noninterest expenses		2,551			1,718			1,634
	TOTAL EXPENSE		3,837			5,382			6,077
	Income before benefit for income taxes		18,719			26,321			25,995
	Income taxes benefit		(722	)		(1,654	)		(1,960	)
	Income before equity in undistributed income of subsidiaries		19,441			27,975			27,955
	Equity in undistributed income (loss) of subsidiaries		5,528			(6,233	)		(8,104	)
	NET INCOME	$	24,969		$	21,742		$	19,851
	Interest on preferred stock and discount accretion		—			620			2,167
	Net Income Available to Common Shareholders	$	24,969		$	21,122		$	17,684
Condensed Statements of Cash Flows	'
	CONDENSED STATEMENTS OF CASH FLOWS
		Years Ended December 31,
		2013			2012			2011
		(in thousands)
	CASH FLOWS FROM OPERATING ACTIVITIES
	Net income	$	24,969		$	21,742		$	19,851
	Adjustments to reconcile net income to net cash provided by (used in) operating activities:
	Share based compensation		895			746			627
	Gain on securities		(359	)		—			—
	Gain on land held for sale		—			(235	)		—
	Gain on early extinguishment		(1,197	)		—			—
	Increase in other assets		(954	)		(1,553	)		(1,660	)
	Increase (decrease) in other liabilities		25			(610	)		3
	Equity in undistributed (income) loss of subsidiaries		(5,528	)		6,233			8,104
	NET CASH PROVIDED BY OPERATING ACTIVITIES		17,851			26,323			26,925
	CASH FLOWS FROM INVESTING ACTIVITIES
	Net cash used in acquisition		(6,233	)		—			—
	Purchases of securities		(415	)		(53	)		(38	)
	Sale of land held for sale		—			1,042			—
	Proceeds from sale of securities available for sale		654			—			—
	Contribution to subsidiary		—			—			—
	NET CASH (USED) PROVIDED BY IN INVESTING ACTIVITIES		(5,994	)		989			(38	)
	CASH FLOWS FROM FINANCING ACTIVITIES
	Cash dividends paid on common and preferred stock		(8,152	)		(5,992	)		(6,327	)
	Issuance of stock to the dividend reinvestment and stock purchase plan		186			160			185
	Proceeds on issuance of stock, net		—			25,040			—
	Redemption of subordinated debentures, net		(9,113	)		(25,000	)		—
	Redemption of preferred stock		—			(19,000	)		(20,000	)
	Warrant repurchase		—			(2,800	)		—
	Excess tax benefits		142			4			(3	)
	Exercise of stock options		2,209			—			72
	NET CASH USED IN FINANCING ACTIVITIES		(14,728	)		(27,588	)		(26,073	)
	Net increase (decrease) in cash and cash equivalents		(2,871	)		(276	)		814
	Cash and cash equivalents, beginning of year		10,349			10,625			9,811
	CASH AND CASH EQUIVALENTS, END OF YEAR	$	7,478		$	10,349		$	10,625

Summary_of_Accounting_Policies3

Summary of Accounting Policies - Additional Information (Detail) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Mar. 31, 2011

Dec. 31, 2013

31-May-13

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Segment

Somerset Hills Bancorp [Member]

Somerset Hills Bancorp [Member]

Prior Acquisitions [Member]

2009 Equity Compensation Program [Member]

2000 Equity Compensation Plan [Member]

Maximum [Member]

Minimum [Member]

Accumulated Comprehensive Income Loss [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Number of operating segments

1

'

'

'

'

'

'

'

'

'

'

'

Principal and interest default period

'90 days

'

'

'

'

'

'

'

'

'

'

'

Residential mortgage loans are placed on non-accrual status at the time principal and interest period

'90 days

'

'

'

'

'

'

'

'

'

'

'

Consumer loans are generally charged off when principal and interest payments

'4 months

'

'

'

'

'

'

'

'

'

'

'

Non-accrual asset satisfactory payments period

'6 months

'

'

'

'

'

'

'

'

'

'

'

Impaired commercial loans

$500,000

'

'

'

'

'

'

'

'

'

'

'

Leases held for sale

'

'

0

'

'

'

'

'

'

'

'

'

Servicing of mortgages

37,800,000

27,900,000

'

'

'

'

'

'

'

'

'

'

Mortgage held for sale

1,200,000

'

'

'

'

'

'

'

'

'

'

'

Originated mortgage servicing rights

274,000

'

'

'

'

'

'

'

'

'

'

'

Issuance of stock options

'

'

'

'

'

'

'

'

2,200,000

'

'

'

Expiration period of stock option plan

'

'

'

'

'

'

'

'

'10 years

'10 years

'

'

Expiration period of after termination of service of plan

'

'

'

'

'

'

'

'

'90 days

'30 days

'

'

Expiration period of after death or disability of the grantee

'

'

'

'

'

'

'

'

'1 year

'1 year

'

'

Common stock, shares authorized

70,000,000

70,000,000

'

'

'

'

'

'

'

2,488,748

'

'

Cash and cash equivalents maturity original period

'Three months or less

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents maturity period

'3 months

'

'

'

'

'

'

'

'

'

'

'

Goodwill

109,974,000

87,111,000

'

'

'

22,900,000

22,862,000

87,100,000

'

'

'

'

Core deposit intangible assets

2,400,000

0

'

578,000

'

2,700,000

'

'

'

'

'

'

Core deposit amortization assets

288,000

'

'

'

'

'

'

'

'

'

'

'

Goodwill likelihood probability percentage

'

'

'

'

'

'

'

'

'

'

50.00%

50.00%

Percentage of fair value reporting unit

50.00%

'

'

'

'

'

'

'

'

'

'

'

Bank owned life insurance

55,968,000

46,143,000

'

'

'

'

'

'

'

'

'

'

Income on bank owned life insurance

1,410,000

1,344,000

1,423,000

'

'

'

'

'

'

'

'

'

Company's investment in trusts

$40,000,000

'

'

'

'

'

'

'

'

'

'

'

Current maximum percentage of total capital permitted for trust preferred securities

25.00%

'

'

'

'

'

'

'

'

'

'

'

Summary_of_Accounting_Policies4

Summary of Accounting Policies - Supplemental schedule of Non-cash Investing and Financing Activities (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'	'
Transfer of loans and leases receivable to other real estate owned and other repossessed assets	'	$3,565	$1,068	$2,482
Cash paid for income taxes	'	12,051	9,382	8,874
Cash paid for interest	'	10,804	16,334	20,366
Transfer of leases from held for sale to held for investment	1,500	'	'	1,517
Non-cash assets acquired:	'	'	'	'
Investment securities available for sale	'	1,777	'	'
Investment securities held for maturity	'	8,686	'	'
Loans, including loans held for sale	'	246,459	'	'
Goodwill and other intangible assets, net	'	25,574	'	'
Other assets	'	15,653	'	'
Total non-cash assets acquired	'	298,149	'	'
Liabilities assumed:	'	'	'	'
Deposits	'	311,801	'	'
Other liabilities	'	1,745	'	'
Total liabilities assumed	'	313,546	'	'
Common stock issued and fair value of stock options converted to Lakeland Bancorp stock options	'	$58,919	'	'

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	31-May-13	Dec. 31, 2013
Business Acquisition, Contingent Consideration [Line Items]	'	'
Core deposit intangible	'	2,700,000
Estimated useful life of deposit intangible	'	'10 years
Merger and acquisition integration-related expenses	'	2,834,000
Amortization of core deposit intangible	'	288,000
Somerset Hills Bancorp [Member]	'	'
Business Acquisition, Contingent Consideration [Line Items]	'	'
Date of Agreement	'	31-May-13
Shares received by the Somerset Hills Bancorp at the time of merger	$1.20	'
Cash received by the Somerset Hills Bancorp at the time of merger	$12	'
Percentage of aggregate merger consideration in shares	90.00%	'
Percentage of aggregate merger consideration in cash	10.00%	'
Common stock expected to issue	5,794,079	'
Transaction value	$6,500,000	'

Acquisitions_Summary_of_Estima

Acquisitions - Summary of Estimated Fair Value of Acquired Assets and Liabilities (Detail) (USD $)	12 Months Ended		1 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	31-May-13	Dec. 31, 2013
			Somerset Hills Bancorp [Member]	Somerset Hills Bancorp [Member]
Business Acquisition [Line Items]	'	'	'	'
Lakeland Bancorp stock issued	'	'	$57,419	'
Cash Payment	'	'	6,460	'
Fair value of Somerset Hills stock options converted to Lakeland Bancorp stock options	1,500	'	1,500	'
Total Consideration Paid	'	'	65,379	'
Recognized amounts of identifiable assets and liabilities assumed at fair value	'	'	'	'
Cash and cash equivalents	'	'	80,776	'
Securities available for sale	'	'	1,777	'
Securities held to maturity	'	'	8,686	'
Federal Home Loan Bank stock	'	'	493	'
Loans and leases	'	'	243,927	'
Loans held for sale	'	'	2,532	'
Premises and equipment	'	'	5,214	'
Identifiable intangible assets	'	'	2,712	'
Accrued interest receivable and other assets	'	'	9,946	'
Deposits	'	'	-311,801	'
Other liabilities	'	'	-1,745	'
Total identifiable assets	'	'	42,517	'
Goodwill	$109,974	$87,111	$22,862	$22,900

Acquisitions_Summary_of_Loans_

Acquisitions - Summary of Loans Acquired (Detail) (Somerset Hills Bancorp [Member], USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Business Acquisition [Line Items]	'
Contractually required principal and interest at acquisition	$356,655
Contractual cash flows not expected to be collected (non-accretable difference)	2,541
Expected cash flows at acquisition	354,114
Interest component of expected cash flows (accretable difference)	107,655
Fair value of acquired loans, including mortgages held for sale	246,459
Acquired Credit Impaired Loans [Member]	'
Business Acquisition [Line Items]	'
Contractually required principal and interest at acquisition	4,507
Contractual cash flows not expected to be collected (non-accretable difference)	2,541
Expected cash flows at acquisition	1,966
Interest component of expected cash flows (accretable difference)	322
Fair value of acquired loans, including mortgages held for sale	1,644
Acquired Non-Credit Impaired Loans [Member]	'
Business Acquisition [Line Items]	'
Contractually required principal and interest at acquisition	352,148
Contractual cash flows not expected to be collected (non-accretable difference)	'
Expected cash flows at acquisition	352,148
Interest component of expected cash flows (accretable difference)	107,333
Fair value of acquired loans, including mortgages held for sale	$244,815

Acquisitions_Summary_of_Pro_Fo

Acquisitions - Summary of Pro Forma Information (Detail) (USD $)	7 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Business Combinations [Abstract]	'	'	'
Net interest income	$6,077	$109,313	$107,402
Noninterest income	889	22,096	21,753
Noninterest expense	3,796	80,731	77,340
Net income	$2,116	$27,828	$24,277
Earnings per share:	'	'	'
Fully diluted	'	$0.78	$0.73

Acquisitions_Estimated_of_Futu

Acquisitions - Estimated of Future Amortization Expense (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Compensation And Retirement Disclosure [Abstract]	'
2014	$464
2015	415
2016	366
2017	316
2018	$267

Investment_Securities_Reconcil

Investment Securities - Reconciliation of Available-for-Sale Securities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$438,372	$386,462
Gross Unrealized Gains	3,800	8,292
Gross Unrealized Losses	-11,066	-1,044
Fair Value	431,106	393,710
U.S. Treasury and U.S. Government Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	72,828	86,002
Gross Unrealized Gains	'	577
Gross Unrealized Losses	-2,663	-8
Fair Value	70,165	86,571
Mortgage-Backed Securities, Residential [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	310,088	235,052
Gross Unrealized Gains	1,752	5,086
Gross Unrealized Losses	-7,338	-579
Fair Value	304,502	239,559
Obligations of States and Political Subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	36,482	36,848
Gross Unrealized Gains	914	1,832
Gross Unrealized Losses	-523	-60
Fair Value	36,873	38,620
Other Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	3,541	13,576
Gross Unrealized Gains	37	189
Gross Unrealized Losses	-158	-321
Fair Value	3,420	13,444
Equity Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	15,433	14,984
Gross Unrealized Gains	1,097	608
Gross Unrealized Losses	-384	-76
Fair Value	$16,146	$15,516

Investment_Securities_Reconcil1

Investment Securities - Reconciliation of Held-to-Maturity Securities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	$101,744	$96,925
Gross Unrealized Gains	1,187	2,967
Gross Unrealized Losses	-2,537	-108
Fair Value	100,394	99,784
U.S. Treasury and U.S. Government Agencies [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	19,732	16,089
Gross Unrealized Gains	3	385
Gross Unrealized Losses	-576	'
Fair Value	19,159	16,474
Mortgage-Backed Securities, Residential [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	34,596	39,065
Gross Unrealized Gains	524	1,313
Gross Unrealized Losses	-1,025	-27
Fair Value	34,095	40,351
Mortgage-Backed Securities, Multifamily [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	2,355	1,421
Gross Unrealized Gains	'	'
Gross Unrealized Losses	-166	-13
Fair Value	2,189	1,408
Obligations of States and Political Subdivisions [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	43,521	38,801
Gross Unrealized Gains	495	1,068
Gross Unrealized Losses	-770	-68
Fair Value	43,246	39,801
Other Debt Securities [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	1,540	1,549
Gross Unrealized Gains	165	201
Gross Unrealized Losses	'	'
Fair Value	$1,705	$1,750

Investment_Securities_Summary_

Investment Securities - Summary of Contractual Maturities of Investment Securities Classified as Available for Sale and Held to Maturity (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Available for Sale, Amortized Cost	'	'
Due in one year or less	$3,946	'
Due after one year through five years	37,961	'
Due after five years through ten years	68,141	'
Due after ten years	2,803	'
Total	112,851	'
Total securities, Available for Sale, Amortized Cost	438,372	'
Available for Sale, Fair Value	'	'
Due in one year or less	3,984	'
Due after one year through five years	37,969	'
Due after five years through ten years	66,023	'
Due after ten years	2,482	'
Total	110,458	'
Total securities, Available for Sale, Fair Value	431,106	393,710
Held to Maturity, Amortized Cost	'	'
Due in one year or less	7,246	'
Due after one year through five years	18,022	'
Due after five years through ten years	32,521	'
Due after ten years	7,004	'
Total	64,793	'
Total securities, Held to Maturity, Amortized Cost	101,744	96,925
Held to Maturity, Fair Value	'	'
Due in one year or less	7,288	'
Due after one year through five years	18,519	'
Due after five years through ten years	31,635	'
Due after ten years	6,668	'
Total	64,110	'
Total securities, Held to Maturity, Fair Value	100,394	99,784
Mortgage-Backed Securities, Residential [Member]	'	'
Available for Sale, Amortized Cost	'	'
Available for Sale, Amortized Cost	310,088	'
Available for Sale, Fair Value	'	'
Available for Sale, Fair Value	304,502	'
Total securities, Available for Sale, Fair Value	304,502	239,559
Held to Maturity, Amortized Cost	'	'
Held to Maturity, Amortized Cost	36,951	'
Held to Maturity, Fair Value	'	'
Held to Maturity, Fair Value	36,284	'
Equity Securities [Member]	'	'
Available for Sale, Amortized Cost	'	'
Available for Sale, Amortized Cost	15,433	'
Available for Sale, Fair Value	'	'
Available for Sale, Fair Value	16,146	'
Total securities, Available for Sale, Fair Value	16,146	15,516
Held to Maturity, Amortized Cost	'	'
Held to Maturity, Amortized Cost	'	'
Held to Maturity, Fair Value	'	'
Held to Maturity, Fair Value	'	'

Investment_Securities_Sales_of

Investment Securities - Sales of Securities, Gross Gains and Gross Losses on Sales of Securities (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments Debt And Equity Securities [Abstract]	'	'	'
Sale proceeds	$64,020	$97,824	$92,409
Gross gains	893	1,364	1,285
Gross losses	($54)	($315)	($56)

Investment_Securities_Addition

Investment Securities - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments Debt And Equity Securities [Abstract]	'	'
Securities, carrying value	$324.80	$328.40
Net amortized cost of equities	2.2	'
Market value of equities	3.2	'
Equity securities included in investment funds	12.9	'
Investment in community development loans	2.9	'
Redemption of funds	'60 days	'
Investment in community development loans mortgage-backed securities, small business loans	10.3	'
Amortized cost of securities	10.3	'
Fair value of securities	10	'
Unfunded commitments	$0	'

Investment_Securities_Reconcil2

Investment Securities - Reconciliation of Available-for-Sale and Held-to-Maturity Securities in Continuous Unrealized Loss Position (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Security	Security
Investment [Line Items]	'	'
Available for Sale, Less than 12 months, Fair value	$255,927	$41,797
Available for Sale, Less than 12 months, Unrealized Losses	9,721	716
Available for Sale, 12 months or longer, Fair value	23,831	8,900
Available for Sale, 12 months or longer, Unrealized Losses	1,345	328
Available for Sale, Number of securities	92	22
Available for Sale, Total, Fair value	279,758	50,697
Available for Sale, Total, Unrealized Losses	11,066	1,044
Held to Maturity, Less than 12 months, Fair value	55,813	6,352
Held to Maturity, Less than 12 months, Unrealized Losses	2,171	103
Held to Maturity, 12 months or longer, Fair value	3,847	371
Held to Maturity, 12 months or longer, Unrealized Losses	366	5
Held to Maturity, Number of securities	69	12
Held to Maturity, Total, Fair value	59,660	6,723
Held to Maturity, Total, Unrealized Losses	2,537	108
Mortgage-Backed Securities, Residential [Member]	'	'
Investment [Line Items]	'	'
Available for Sale, Less than 12 months, Fair value	177,262	30,359
Available for Sale, Less than 12 months, Unrealized Losses	6,730	572
Available for Sale, 12 months or longer, Fair value	10,724	3,239
Available for Sale, 12 months or longer, Unrealized Losses	608	7
Available for Sale, Number of securities	51	10
Available for Sale, Total, Fair value	187,986	33,598
Available for Sale, Total, Unrealized Losses	7,338	579
Held to Maturity, Less than 12 months, Fair value	22,939	1,239
Held to Maturity, Less than 12 months, Unrealized Losses	889	27
Held to Maturity, 12 months or longer, Fair value	1,097	'
Held to Maturity, 12 months or longer, Unrealized Losses	136	'
Held to Maturity, Number of securities	11	1
Held to Maturity, Total, Fair value	24,036	1,239
Held to Maturity, Total, Unrealized Losses	1,025	27
Mortgage-Backed Securities, Multifamily [Member]	'	'
Investment [Line Items]	'	'
Held to Maturity, Less than 12 months, Fair value	895	1,408
Held to Maturity, Less than 12 months, Unrealized Losses	99	13
Held to Maturity, 12 months or longer, Fair value	1,294	'
Held to Maturity, 12 months or longer, Unrealized Losses	67	'
Held to Maturity, Number of securities	2	1
Held to Maturity, Total, Fair value	2,189	1,408
Held to Maturity, Total, Unrealized Losses	166	13
Obligations of States and Political Subdivisions [Member]	'	'
Investment [Line Items]	'	'
Available for Sale, Less than 12 months, Fair value	8,500	2,825
Available for Sale, Less than 12 months, Unrealized Losses	328	60
Available for Sale, 12 months or longer, Fair value	2,087	'
Available for Sale, 12 months or longer, Unrealized Losses	195	'
Available for Sale, Number of securities	21	7
Available for Sale, Total, Fair value	10,587	2,825
Available for Sale, Total, Unrealized Losses	523	60
Held to Maturity, Less than 12 months, Fair value	17,826	3,705
Held to Maturity, Less than 12 months, Unrealized Losses	607	63
Held to Maturity, 12 months or longer, Fair value	1,456	371
Held to Maturity, 12 months or longer, Unrealized Losses	163	5
Held to Maturity, Number of securities	51	10
Held to Maturity, Total, Fair value	19,282	4,076
Held to Maturity, Total, Unrealized Losses	770	68
U.S. Treasury and U.S. Government Agencies [Member]	'	'
Investment [Line Items]	'	'
Available for Sale, Less than 12 months, Fair value	70,165	3,992
Available for Sale, Less than 12 months, Unrealized Losses	2,663	8
Available for Sale, 12 months or longer, Fair value	'	'
Available for Sale, 12 months or longer, Unrealized Losses	'	'
Available for Sale, Number of securities	16	1
Available for Sale, Total, Fair value	70,165	3,992
Available for Sale, Total, Unrealized Losses	2,663	8
Held to Maturity, Less than 12 months, Fair value	14,153	'
Held to Maturity, Less than 12 months, Unrealized Losses	576	'
Held to Maturity, 12 months or longer, Fair value	'	'
Held to Maturity, 12 months or longer, Unrealized Losses	'	'
Held to Maturity, Number of securities	5	'
Held to Maturity, Total, Fair value	14,153	'
Held to Maturity, Total, Unrealized Losses	576	'
Other Debt Securities [Member]	'	'
Investment [Line Items]	'	'
Available for Sale, Less than 12 months, Fair value	'	'
Available for Sale, Less than 12 months, Unrealized Losses	'	'
Available for Sale, 12 months or longer, Fair value	805	5,661
Available for Sale, 12 months or longer, Unrealized Losses	158	321
Available for Sale, Number of securities	1	2
Available for Sale, Total, Fair value	805	5,661
Available for Sale, Total, Unrealized Losses	158	321
Equity Securities [Member]	'	'
Investment [Line Items]	'	'
Available for Sale, Less than 12 months, Fair value	'	4,621
Available for Sale, Less than 12 months, Unrealized Losses	'	76
Available for Sale, 12 months or longer, Fair value	10,215	'
Available for Sale, 12 months or longer, Unrealized Losses	384	'
Available for Sale, Number of securities	3	2
Available for Sale, Total, Fair value	10,215	4,621
Available for Sale, Total, Unrealized Losses	$384	$76

Loans_and_Leases_and_Other_Rea2

Loans and Leases and Other Real Estate - Composition of Lakeland`s Loan and Lease Portfolio (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans and leases	$2,470,289	$2,147,207
Less deferred fees	-1,273	-364
Loans and leases, net of deferred fees	2,469,016	2,146,843
Commercial, Secured by Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans and leases	1,389,861	1,125,137
Commercial, Industrial and Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans and leases	213,808	216,129
Leases [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans and leases	41,332	26,781
Real Estate-Residential Mortgage [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans and leases	432,831	423,262
Real Estate-Construction [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans and leases	53,119	46,272
Home Equity and Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total loans and leases	$339,338	$309,626

Loans_and_Leases_and_Other_Rea3

Loans and Leases and Other Real Estate - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Residential loans pledged for potential borrowings at the Federal Home Loan Bank of New York	'	$263,100,000	$203,100,000	'
Carrying value of loans acquired	'	1,700,000	'	'
Interest income on the loans acquired	'	46,000	'	'
Non-accrual loans included of troubled debt restructurings	'	2,300,000	3,400,000	'
Increase in impaired loans	'	2,000,000	'	'
Increase in impaired loans with specific allowance	'	205,000	'	'
Interest accrued on impaired loans and leases	'	2,200,000	2,800,000	2,900,000
Unfunded lending reserve	'	1,200,000	1,100,000	'
Loans to these related parties	'	25,000,000	'	'
Loans to these related parties, additions	'	9,600,000	'	'
Repayment of loan from related parties	'	12,700,000	'	'
Mortgages held for sale	'	1,200,000	'	'
Leases held for sale	'	'	'	0
Reclassification of leases held for sale to held for investment	1,500,000	'	'	1,517,000
Other repossessed assets owned	'	54,000	77,000	'
Other real estate owned	'	466,000	452,000	'
Writedown of other repossessed assets	'	'	'	230,000
Minimum [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Threshold for groups of impaired loans	'	250,000	'	'
Maximum [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Threshold for groups of impaired loans	'	500,000	'	'
Home Equity and Consumer [Member]	'	'	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'
Overdraft balances included in home equity and consumer loans	'	$590,000	$532,000	'

Loans_and_Leases_and_Other_Rea4

Loans and Leases and Other Real Estate - Lakeland's Non-Accrual Loans and Leases and Its Accruing Troubled Debt Restructurings (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total non-accrual loans and leases	$16,932	$27,980
Other real estate and other repossessed assets	520	529
TOTAL NON-PERFORMING ASSETS	17,452	28,509
Troubled debt restructurings, still accruing	10,289	7,336
Commercial, Secured by Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total non-accrual loans and leases	7,697	10,511
Commercial, Industrial and Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total non-accrual loans and leases	88	1,476
Leases [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total non-accrual loans and leases	'	32
Real Estate-Residential Mortgage [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total non-accrual loans and leases	6,141	8,733
Real Estate-Construction [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total non-accrual loans and leases	831	4,031
Home Equity and Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Total non-accrual loans and leases	$2,175	$3,197

Loans_and_Leases_and_Other_Rea5

Loans and Leases and Other Real Estate - Age Analysis of Past Due Loans, Segregated by Class of Loans (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	$15,482	$10,547
60-89 Days Past Due	7,615	3,699
Greater Than 89 Days	15,159	29,417
Total Past Due	38,256	43,663
Current	2,432,033	2,103,544
Total Loans and Leases	2,470,289	2,147,207
Recorded Investment greater than 89 Days and still accruing	1,997	1,437
Commercial, Secured by Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	7,355	3,831
60-89 Days Past Due	5,438	2,308
Greater Than 89 Days	6,059	10,511
Total Past Due	18,852	16,650
Current	1,371,009	1,108,487
Total Loans and Leases	1,389,861	1,125,137
Recorded Investment greater than 89 Days and still accruing	697	'
Commercial, Industrial and Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	482	400
60-89 Days Past Due	159	171
Greater Than 89 Days	20	1,476
Total Past Due	661	2,047
Current	213,147	214,082
Total Loans and Leases	213,808	216,129
Recorded Investment greater than 89 Days and still accruing	'	'
Leases [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	77	367
60-89 Days Past Due	179	36
Greater Than 89 Days	'	32
Total Past Due	256	435
Current	41,076	26,346
Total Loans and Leases	41,332	26,781
Recorded Investment greater than 89 Days and still accruing	'	'
Real Estate-Residential Mortgage [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	5,792	2,370
60-89 Days Past Due	1,306	821
Greater Than 89 Days	5,365	10,012
Total Past Due	12,463	13,203
Current	420,368	410,059
Total Loans and Leases	432,831	423,262
Recorded Investment greater than 89 Days and still accruing	414	1,279
Real Estate-Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	'	1,100
60-89 Days Past Due	'	'
Greater Than 89 Days	831	4,031
Total Past Due	831	5,131
Current	52,288	41,141
Total Loans and Leases	53,119	46,272
Recorded Investment greater than 89 Days and still accruing	'	'
Home Equity and Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 Days Past Due	1,776	2,479
60-89 Days Past Due	533	363
Greater Than 89 Days	2,884	3,355
Total Past Due	5,193	6,197
Current	334,145	303,429
Total Loans and Leases	339,338	309,626
Recorded Investment greater than 89 Days and still accruing	$886	$158

Loans_and_Leases_and_Other_Rea6

Loans and Leases and Other Real Estate - Impaired Loans with and without Specific Allowances (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	$2,000	'	'
Recorded Investment in Impaired loans	24,619	31,531	43,145
Contractual Unpaid Principal Balance	28,182	39,067	59,449
Specific Allowance	910	873	805
Interest Income Recognized	877	724	447
Average Investment in Impaired loans	26,966	35,764	38,466
Commercial, Secured by Real Estate [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	18,375	19,804	23,568
Contractual Unpaid Principal Balance	19,873	25,753	31,343
Specific Allowance	739	368	392
Interest Income Recognized	640	541	350
Average Investment in Impaired loans	18,580	22,126	21,001
Commercial, Secured by Real Estate [Member] | Loans With Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	10,152	3,346	3,920
Contractual Unpaid Principal Balance	10,217	4,088	6,421
Specific Allowance	739	368	392
Interest Income Recognized	442	46	18
Average Investment in Impaired loans	9,727	3,825	6,209
Commercial, Secured by Real Estate [Member] | Loans Without Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	8,223	16,458	19,648
Contractual Unpaid Principal Balance	9,656	21,665	24,922
Specific Allowance	'	'	'
Interest Income Recognized	198	495	332
Average Investment in Impaired loans	8,853	18,301	14,792
Commercial, Industrial and Other [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	4,175	5,704	4,608
Contractual Unpaid Principal Balance	4,273	5,803	8,802
Specific Allowance	31	219	172
Interest Income Recognized	194	117	'
Average Investment in Impaired loans	4,729	4,607	4,213
Commercial, Industrial and Other [Member] | Loans With Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	155	808	534
Contractual Unpaid Principal Balance	155	871	647
Specific Allowance	31	219	172
Interest Income Recognized	5	1	'
Average Investment in Impaired loans	396	769	768
Commercial, Industrial and Other [Member] | Loans Without Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	4,020	4,896	4,074
Contractual Unpaid Principal Balance	4,118	4,932	8,155
Specific Allowance	'	'	'
Interest Income Recognized	189	116	'
Average Investment in Impaired loans	4,333	3,838	3,445
Leases [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	'	'	'
Contractual Unpaid Principal Balance	'	'	'
Specific Allowance	'	'	'
Interest Income Recognized	'	'	'
Average Investment in Impaired loans	'	'	'
Leases [Member] | Loans With Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	'	'	'
Contractual Unpaid Principal Balance	'	'	'
Specific Allowance	'	'	'
Interest Income Recognized	'	'	'
Average Investment in Impaired loans	'	'	'
Leases [Member] | Loans Without Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	'	'	'
Contractual Unpaid Principal Balance	'	'	'
Specific Allowance	'	'	'
Interest Income Recognized	'	'	'
Average Investment in Impaired loans	'	'	'
Real Estate-Residential Mortgage [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	617	648	976
Contractual Unpaid Principal Balance	672	648	985
Specific Allowance	'	43	75
Interest Income Recognized	'	10	48
Average Investment in Impaired loans	622	759	874
Real Estate-Residential Mortgage [Member] | Loans With Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	'	288	561
Contractual Unpaid Principal Balance	'	288	570
Specific Allowance	'	43	75
Interest Income Recognized	'	4	19
Average Investment in Impaired loans	'	374	332
Real Estate-Residential Mortgage [Member] | Loans Without Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	617	360	415
Contractual Unpaid Principal Balance	672	360	415
Specific Allowance	'	'	'
Interest Income Recognized	'	6	29
Average Investment in Impaired loans	622	385	542
Real Estate-Construction [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	501	4,030	12,644
Contractual Unpaid Principal Balance	2,411	5,518	16,871
Specific Allowance	'	97	24
Interest Income Recognized	'	'	14
Average Investment in Impaired loans	2,111	6,978	11,564
Real Estate-Construction [Member] | Loans With Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	'	698	244
Contractual Unpaid Principal Balance	'	1,085	518
Specific Allowance	'	97	24
Interest Income Recognized	'	'	'
Average Investment in Impaired loans	'	1,445	333
Real Estate-Construction [Member] | Loans Without Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	501	3,332	12,400
Contractual Unpaid Principal Balance	2,411	4,433	16,353
Specific Allowance	'	'	'
Interest Income Recognized	'	'	14
Average Investment in Impaired loans	2,111	5,533	11,231
Home Equity and Consumer [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	951	1,345	1,349
Contractual Unpaid Principal Balance	953	1,345	1,448
Specific Allowance	140	146	142
Interest Income Recognized	43	56	35
Average Investment in Impaired loans	924	1,294	814
Home Equity and Consumer [Member] | Loans With Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	934	976	949
Contractual Unpaid Principal Balance	936	976	963
Specific Allowance	140	146	142
Interest Income Recognized	42	55	34
Average Investment in Impaired loans	907	934	800
Home Equity and Consumer [Member] | Loans Without Specific Allowance [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment in Impaired loans	17	369	400
Contractual Unpaid Principal Balance	17	369	485
Specific Allowance	'	'	'
Interest Income Recognized	1	1	1
Average Investment in Impaired loans	$17	$360	$14

Loans_and_Leases_and_Other_Rea7

Loans and Leases and Other Real Estate - Lakeland's Commercial Loan Portfolio (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Commercial, Secured by Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	$1,389,861	$1,125,137
Commercial, Secured by Real Estate [Member] | Pass 1 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Commercial, Secured by Real Estate [Member] | Pass 2 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Commercial, Secured by Real Estate [Member] | Pass 3 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	70,811	44,448
Commercial, Secured by Real Estate [Member] | Pass 4 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	442,933	350,145
Commercial, Secured by Real Estate [Member] | Pass 5 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	754,275	623,912
Commercial, Secured by Real Estate [Member] | Watch [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	38,893	43,515
Commercial, Secured by Real Estate [Member] | Other Assets Especially Mentioned [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	27,640	21,132
Commercial, Secured by Real Estate [Member] | Substandard [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	55,309	41,817
Commercial, Secured by Real Estate [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	168
Commercial, Secured by Real Estate [Member] | Loss [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Commercial, Industrial and Other [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	213,808	216,129
Commercial, Industrial and Other [Member] | Pass 1 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	952	996
Commercial, Industrial and Other [Member] | Pass 2 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	12,964	12,899
Commercial, Industrial and Other [Member] | Pass 3 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	9,263	15,676
Commercial, Industrial and Other [Member] | Pass 4 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	60,002	62,676
Commercial, Industrial and Other [Member] | Pass 5 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	85,939	88,033
Commercial, Industrial and Other [Member] | Watch [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	12,278	13,261
Commercial, Industrial and Other [Member] | Other Assets Especially Mentioned [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	9,596	2,845
Commercial, Industrial and Other [Member] | Substandard [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	22,814	19,743
Commercial, Industrial and Other [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Commercial, Industrial and Other [Member] | Loss [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Real Estate-Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	53,119	46,272
Real Estate-Construction [Member] | Pass 1 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Real Estate-Construction [Member] | Pass 2 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Real Estate-Construction [Member] | Pass 3 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Real Estate-Construction [Member] | Pass 4 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	1,178	795
Real Estate-Construction [Member] | Pass 5 [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	48,243	34,682
Real Estate-Construction [Member] | Watch [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Real Estate-Construction [Member] | Other Assets Especially Mentioned [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	1,245	6,535
Real Estate-Construction [Member] | Substandard [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	2,453	4,260
Real Estate-Construction [Member] | Doubtful [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'
Real Estate-Construction [Member] | Loss [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Commercial loan portfolio	'	'

Loans_and_Leases_and_Other_Rea8

Loans and Leases and Other Real Estate - Allowance for Loan and Lease Losses by Portfolio Segment and Related Recorded Investment in Loans and Leases (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	$28,931	$28,416	$27,331
Charge-offs	-10,291	-16,019	-21,877
Recoveries	1,838	1,627	4,146
Provision	9,343	14,907	18,816
Ending Balance	29,821	28,931	28,416
Ending Balance: Individually evaluated for impairment	910	873	805
Ending Balance: Collectively evaluated for impairment	28,911	28,058	27,611
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	24,619	31,531	43,145
Ending Balance: Collectively evaluated for impairment	2,445,259	2,115,676	1,998,181
Ending Balance: Loans acquired with deteriorated credit quality	411	'	'
Ending Balance	2,470,289	2,147,207	2,041,326
Commercial, Secured by Real Estate [Member]	'	'	'
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	16,258	16,618	11,366
Charge-offs	-2,026	-7,287	-5,352
Recoveries	1,061	280	2,084
Provision	-830	6,647	8,520
Ending Balance	14,463	16,258	16,618
Ending Balance: Individually evaluated for impairment	739	368	392
Ending Balance: Collectively evaluated for impairment	13,724	15,890	16,226
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Commercial, Secured by Real Estate [Member] | Loans and Leases [Member]	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	18,375	19,804	23,568
Ending Balance: Collectively evaluated for impairment	1,371,486	1,105,333	989,414
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Ending Balance	1,389,861	1,125,137	1,012,982
Commercial, Industrial and Other [Member]	'	'	'
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	5,103	3,477	5,113
Charge-offs	-1,324	-949	-5,249
Recoveries	260	428	439
Provision	1,292	2,147	3,174
Ending Balance	5,331	5,103	3,477
Ending Balance: Individually evaluated for impairment	31	219	172
Ending Balance: Collectively evaluated for impairment	5,300	4,884	3,305
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Commercial, Industrial and Other [Member] | Loans and Leases [Member]	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	4,175	5,704	4,608
Ending Balance: Collectively evaluated for impairment	209,633	210,425	205,307
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Ending Balance	213,808	216,129	209,915
Leases [Member]	'	'	'
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	578	688	3,477
Charge-offs	-206	-999	-2,858
Recoveries	121	504	1,206
Provision	11	385	-1,137
Ending Balance	504	578	688
Ending Balance: Individually evaluated for impairment	'	'	'
Ending Balance: Collectively evaluated for impairment	504	578	688
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Leases [Member] | Loans and Leases [Member]	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	'	'	'
Ending Balance: Collectively evaluated for impairment	41,332	26,781	28,879
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Ending Balance	41,332	26,781	28,879
Real Estate-Residential Mortgage [Member]	'	'	'
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	3,568	3,077	2,628
Charge-offs	-1,257	-1,822	-1,772
Recoveries	99	66	32
Provision	804	2,247	2,189
Ending Balance	3,214	3,568	3,077
Ending Balance: Individually evaluated for impairment	'	43	75
Ending Balance: Collectively evaluated for impairment	3,214	3,525	3,002
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Real Estate-Residential Mortgage [Member] | Loans and Leases [Member]	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	617	648	976
Ending Balance: Collectively evaluated for impairment	432,214	422,614	405,246
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Ending Balance	432,831	423,262	406,222
Real Estate-Construction [Member]	'	'	'
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	587	1,424	2,176
Charge-offs	-3,854	-2,888	-3,636
Recoveries	14	43	67
Provision	3,795	2,008	2,817
Ending Balance	542	587	1,424
Ending Balance: Individually evaluated for impairment	'	97	24
Ending Balance: Collectively evaluated for impairment	542	490	1,400
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Real Estate-Construction [Member] | Loans and Leases [Member]	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	501	4,030	12,644
Ending Balance: Collectively evaluated for impairment	52,618	42,242	66,494
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Ending Balance	53,119	46,272	79,138
Home Equity and Consumer [Member]	'	'	'
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	2,837	3,132	2,571
Charge-offs	-1,624	-2,074	-3,010
Recoveries	283	306	318
Provision	1,241	1,473	3,253
Ending Balance	2,737	2,837	3,132
Ending Balance: Individually evaluated for impairment	140	146	142
Ending Balance: Collectively evaluated for impairment	2,597	2,691	2,990
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Home Equity and Consumer [Member] | Loans and Leases [Member]	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	951	1,345	1,349
Ending Balance: Collectively evaluated for impairment	337,976	308,281	302,841
Ending Balance: Loans acquired with deteriorated credit quality	411	'	'
Ending Balance	339,338	309,626	304,190
Unallocated [Member]	'	'	'
Allowance for Loan and Lease Losses:	'	'	'
Beginning Balance	'	'	'
Charge-offs	'	'	'
Recoveries	'	'	'
Provision	3,030	'	'
Ending Balance	3,030	'	'
Ending Balance: Individually evaluated for impairment	'	'	'
Ending Balance: Collectively evaluated for impairment	3,030	'	'
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Unallocated [Member] | Loans and Leases [Member]	'	'	'
Loans and Leases:	'	'	'
Ending Balance: Individually evaluated for impairment	'	'	'
Ending Balance: Collectively evaluated for impairment	'	'	'
Ending Balance: Loans acquired with deteriorated credit quality	'	'	'
Ending Balance	'	'	'

Loans_and_Leases_and_Other_Rea9

Loans and Leases and Other Real Estate - Summary of Restructured Loans (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
	Contract	Contract
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	12	17
Pre-Modification Outstanding Recorded Investment	$4,101	$6,707
Post-Modification Outstanding Recorded Investment	3,445	6,707
Commercial, Secured by Real Estate [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	8	10
Pre-Modification Outstanding Recorded Investment	3,637	2,231
Post-Modification Outstanding Recorded Investment	2,988	2,231
Commercial, Industrial and Other [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	6
Pre-Modification Outstanding Recorded Investment	127	4,421
Post-Modification Outstanding Recorded Investment	121	4,421
Leases [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Pre-Modification Outstanding Recorded Investment	'	'
Post-Modification Outstanding Recorded Investment	'	'
Real Estate-Residential Mortgage [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	'
Pre-Modification Outstanding Recorded Investment	179	'
Post-Modification Outstanding Recorded Investment	179	'
Real Estate-Construction [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Pre-Modification Outstanding Recorded Investment	'	'
Post-Modification Outstanding Recorded Investment	'	'
Home Equity and Consumer [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	2	1
Pre-Modification Outstanding Recorded Investment	158	55
Post-Modification Outstanding Recorded Investment	$157	$55

Recovered_Sheet1

Loans and Leases and Other Real Estate - Summary of Restructured Debt within Last 12 Months that have Subsequently Defaulted (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
	Contract	Contract
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	3
Recorded Investment	$147	$414
Commercial, Secured by Real Estate [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	2
Recorded Investment	'	272
Commercial, Industrial and Other [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	1
Recorded Investment	'	142
Leases [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Recorded Investment	'	'
Real Estate-Residential Mortgage [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Recorded Investment	'	'
Real Estate-Construction [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	'	'
Recorded Investment	'	'
Home Equity and Consumer [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Number of Contracts	1	'
Recorded Investment	$147	'

Recovered_Sheet2

Loans and Leases and Other Real Estate - Summary of Gains on Leasing Related Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Receivables [Abstract]	'	'	'
Gains on sales of leases	'	'	$143
Realized gains on paid off leases	51	471	883
Gains (losses) on sales of other repossessed assets	12	4	-52
Total gains on leasing related assets	$63	$475	$974

Recovered_Sheet3

Loans and Leases and Other Real Estate - Summary of Future Minimum Lease Payments of Lease Receivables (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Leases [Abstract]	'
2014	$14,387
2015	11,634
2016	8,255
2017	5,155
2018	1,716
thereafter	185
Total	$41,332

Premises_and_Equipment_Summary

Premises and Equipment - Summary of Premises and Equipment (Detail) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Land [Member]

Land [Member]

Buildings and Building Improvements [Member]

Buildings and Building Improvements [Member]

Buildings and Building Improvements [Member]

Buildings and Building Improvements [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Furniture, Fixtures and Equipment [Member]

Furniture, Fixtures and Equipment [Member]

Furniture, Fixtures and Equipment [Member]

Furniture, Fixtures and Equipment [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Property, Plant and Equipment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated useful lives

'

'

'

'

'

'

'10 years

'50 years

'

'

'10 years

'25 years

'

'

'2 years

'30 years

Premises and equipment, gross

$87,917

$75,911

$6,259

$5,245

$34,607

$30,818

'

'

$9,997

$8,405

'

'

$37,054

$31,443

'

'

Less accumulated depreciation and amortization

50,769

42,631

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Premises and equipment

$37,148

$33,280

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Premises_and_Equipment_Additio

Premises and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property Plant And Equipment [Abstract]	'	'	'
Depreciation expense	$3.70	$3.10	$2.90

Time_Deposits_Schedule_of_Matu

Time Deposits - Schedule of Maturities of Certificates of Deposit (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Banking And Thrift [Abstract]	'
2014	$214,479
2015	46,981
2016	14,823
2017	17,974
2018	1,136
Thereafter	693
Total	$296,086

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

0 Months Ended

3 Months Ended

12 Months Ended

12 Months Ended

3 Months Ended

1 Months Ended

1 Months Ended

Jun. 18, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

31-May-07

Dec. 31, 2003

Oct. 07, 2012

Jun. 30, 2003

Jun. 30, 2003

Line of Credit [Member]

Federal Home Loan Bank of New York [Member]

Federal Home Loan Bank of New York [Member]

Federal Home Loan Bank of New York [Member]

Federal Home Loan Bank of New York [Member]

Federal Home Loan Bank of New York [Member]

Federal Home Loan Bank of New York [Member]

Federal Home Loan Bank of New York [Member]

Federal Home Loan Bank of New York [Member]

Collateralized FHLB Advances [Member]

Collateralized FHLB Advances [Member]

Securities sold under agreements to repurchase [Member]

Securities sold under agreements to repurchase [Member]

Securities sold under agreements to repurchase [Member]

Lakeland Bancorp Capital Trust IV [Member]

Lakeland Bancorp Capital Trust III [Member]

Lakeland Bancorp Capital Trust III [Member]

Lakeland Bancorp Capital Trust I [Member]

Lakeland Bancorp Capital Trust II [Member]

Line of Credit [Member]

Line of Credit [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Standby Letters of Credit [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Advances from the FHLB

'

$69,000,000

$25,000,000

$69,000,000

'

'

'

'

$50,000,000

$72,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Overnight federal funds lines available for borrow

'

'

'

'

'

162,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings with the Federal Reserve Bank of New York

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt prepaid

'

6,000,000

10,000,000

6,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturity of advances from the FHLB

'

'

'

'

'

'

'

'

'

'

'1 year

'5 years

'5 years

'6 years

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate of advances

'

'

'

'

'

'

3.99%

3.93%

'

'

'

'

'

'

1.47%

3.73%

'

'

'

'

'

'

'

'

Penalty prepayment

'

683,000

782,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Securities sold under agreement to repurchase maturities due

'

50,000,000

60,000,000

50,000,000

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average interest rate of advances

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.90%

2.51%

2.59%

'

'

'

'

'

Prepayment penalty

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

526,000

'

'

'

'

'

'

'

Junior subordinated debentures issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,600,000

25,800,000

'

10,300,000

20,600,000

Distribution rate on debentures

3.38%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.61%

7.54%

'

6.20%

5.71%

Debenture floated LIBOR rate

3.10%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.52%

2.85%

'

3.10%

3.10%

Proceeds of trust preferred securities, Total

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

25,000,000

'

10,000,000

20,000,000

Trust preferred securities, issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000

25,000

'

10,000

20,000

Trust preferred securities, face value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000

1,000

'

1,000

1,000

Distribution of securities years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'10 years

'

'7 years

'5 years

Junior subordinated debentures due

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31-Aug-37

7-Jan-34

'

7-Jul-33

30-Jun-33

Preferred securities redeemed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2037

'

'

'

'2033

Debentures redeemed at par value

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,800,000

'

'

Gain on extinguishment of debt

1,200,000

'

'

1,197,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debentures extinguished

$9,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Summary_of_Information_Re

Debt - Summary of Information Relating to Securities Sold Under Agreements to Repurchase and Federal Funds Purchased (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal funds purchased [Member]	'	'	'
Short-term Debt [Line Items]	'	'	'
Balance at December 31	$50,000	$72,000	$28,000
Interest rate at December 31	0.37%	0.37%	0.32%
Maximum amount outstanding at any month-end during the year	81,000	72,000	35,750
Average amount outstanding during the year	8,424	15,147	6,674
Weighted average interest rate during the year	0.34%	0.35%	0.41%
Securities sold under agreements to repurchase [Member]	'	'	'
Short-term Debt [Line Items]	'	'	'
Balance at December 31	31,991	45,289	44,131
Interest rate at December 31	0.02%	0.05%	0.09%
Maximum amount outstanding at any month-end during the year	48,315	49,863	60,818
Average amount outstanding during the year	$37,277	$44,434	$52,566
Weighted average interest rate during the year	0.03%	0.06%	0.12%

Debt_Summary_of_FHLB_Debt_Matu

Debt - Summary of FHLB Debt Matures (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Federal Home Loan Bank Advances Maturities Summary [Abstract]	'	'
2014	$30,000	'
2015	10,000	'
2016	10,000	'
2017	4,000	'
2018	15,000	'
Thereafter	'	'
Total	$69,000	$25,000

Debt_Summary_of_LongTerm_Secur

Debt - Summary of Long-Term Securities Sold Under Agreements to Repurchase Mature (Detail) (USD $)	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Banking And Thrift [Abstract]	'	'	'
2014	'	'	'
2015	'	'	'
2016	10,000	'	'
2017	10,000	'	'
2018	10,000	'	'
Thereafter	20,000	'	'
Total	$50,000	$10,000	$60,000

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)

1 Months Ended

12 Months Ended

1 Months Ended

Feb. 29, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Oct. 07, 2012

Sep. 04, 2012

Mar. 19, 2012

Jan. 14, 2011

Feb. 29, 2012

Mar. 31, 2011

Aug. 31, 2010

Feb. 28, 2009

31-May-13

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Somerset Hills Bancorp [Member]

Changes In Equity And Comprehensive Income Line Items [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares issued

'

36,070,286

29,941,967

'

'

2,667,253

'

'

'

'

'

'

5,794,079

Cash Payment

'

'

'

'

'

'

'

'

'

'

'

'

$6,460,000

Common stock price per share

'

'

'

'

'

$9.65

'

'

'

'

'

'

'

Common stock net proceeds

'

'

25,040,000

'

'

'

'

'

'

'

'

'

'

Junior subordinated debentures repay

'

'

'

'

25,800,000

'

'

'

'

'

'

'

'

Stock dividend authorized and distributed

'

'

'

'

'

'

5.00%

5.00%

'

'

'

'

'

Stock dividend distributed

'

'

16-Apr-12

16-Feb-11

'

'

'

'

'

'

'

'

'

Cumulative Perpetual Preferred Stock, Series A issued

'

'

'

'

'

'

'

'

'

'

'

59,000

'

Cumulative Perpetual Preferred Stock, Series A, purchase price

'

'

'

'

'

'

'

'

'

'

'

59,000,000

'

Entity warrant issued

'

'

'

'

'

'

'

'

'

'

'

1,046,901

'

Liquidation preference

'

'

'

'

'

'

'

'

'

'

'

$1,000

'

Redemption of preferred stock

'

'

'

'

'

'

'

'

19,000

20,000

20,000

'

'

Maturity of warrant description

'

'The warrant was issued with an initial exercise price of $8.45 (adjusted for stock dividends) and a ten year term and was exercisable immediately, in whole or in part.

'

'

'

'

'

'

'

'

'

'

'

Warrant, initial exercise price

'

8.45

'

'

'

'

'

'

'

'

'

'

'

Exercisable term of warrant

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

Dividend paid

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

Issuance of proceeds, warrants

'

59,000,000

'

'

'

'

'

'

'

'

'

'

'

Common stock carrying value

'

3,300,000

'

'

'

'

'

'

'

'

'

'

'

Discount amortized period

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

Redemption of warrant

$2,800,000

'

'

'

'

'

'

'

'

'

'

'

'

Income_Taxes_Components_of_Inc

Income Taxes - Components of Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Current tax provision	$12,286	$9,520	$8,540
Deferred tax provision	164	576	172
Provision for income taxes	$12,450	$10,096	$8,712

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Line Items]	'	'
Statutory federal rate	35.00%	'
Deferred tax asset, net	$14,503,000	$9,539,000
Payment of interest and penalties	19,000	19,000
Somerset Hills Bancorp [Member]	'	'
Income Tax Disclosure [Line Items]	'	'
Deferred tax asset, net	$93,000	'

Income_Taxes_Summary_Income_Ta

Income Taxes - Summary Income Tax Provision Reconciled to the Income Taxes that Computed at the Statutory Federal Rate (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal income tax, at statutory rates	$13,097	$11,143	$9,999
Increase (deduction) in taxes resulting from:	'	'	'
Non-taxable interest income	-1,370	-1,296	-1,387
State income tax, net of federal income tax effect	339	192	246
Other, net	384	57	-146
Provision for income taxes	$12,450	$10,096	$8,712

Income_Taxes_Summary_of_Net_De

Income Taxes - Summary of Net Deferred Tax Asset (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred tax assets:	'	'
Allowance for loan and lease losses	$12,688	$12,271
Share based compensation plans	553	356
Purchase accounting fair market value adjustments	688	'
Non-accrued interest	389	627
Deferred compensation	1,671	1,357
Other than temporary impairment loss on investment securities	255	374
Unrealized losses on securities available for sale	2,620	'
Unfunded pension benefits	20	298
Other, net	771	590
Deferred tax assets	19,655	15,873
Deferred tax liabilities:	'	'
Core deposit intangible from acquired companies	990	'
Deferred loan costs	1,338	1,365
Prepaid expenses	457	377
Depreciation and amortization	1,514	1,172
Deferred gain on securities	194	194
Unrealized gains on securities available for sale	'	2,695
Other	659	531
Deferred tax liabilities	5,152	6,334
Net deferred tax assets, included in other assets	$14,503	$9,539

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]	'	'
Balance at January 1	$168	$252
Additions for tax positions of prior years	12	22
Reductions for tax positions resulting from lapse of statute of limitations	-52	-106
Settlements	-17	'
Balance at December 31	$111	$168

Earnings_Per_Share_Computation

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basic earnings per share	'	'	'
Net income available to common shareholders, Income	$24,969	$21,122	$17,684
Less: earnings allocated to participating securities, Income	178	181	130
Net income available to common shareholders, Total	24,791	20,941	17,554
Net income available to common shareholders, Shares	33,088	27,619	26,572
Less: earnings allocated to participating securities, Shares	'	'	'
Net income available to common shareholders, Total	33,088	27,619	26,572
Net income available to common shareholders, Per share amount	$0.75	$0.76	$0.67
Less: earnings allocated to participating securities, Per share amount	$0	$0	$0.01
Net income available to common shareholders, Total	$0.75	$0.76	$0.66
Effect of dilutive securities	'	'	'
Stock options and restricted stock, Income	'	'	'
Stock options and restricted stock, Shares	152	73	109
Stock options and restricted stock, Per share amount	'	'	'
Diluted earnings per share	'	'	'
Net income available to common shareholders plus assumed conversions, Income	$24,791	$20,941	$17,554
Net income available to common shareholders plus assumed conversions, Shares	33,240	27,692	26,681
Net income available to common shareholders plus assumed conversions, Per share amount	$0.75	$0.76	$0.66

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Options to purchase	'	'	19,893
Weighted average per share of restricted stock	'	'	$11.52
Common Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Options to purchase	341,276	448,137	598,477
Weighted average per share of restricted stock	$12.51	$12.56	$12.57

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Nov. 30, 2008	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2008	Dec. 31, 2003
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Contributions made by company to plans	'	$160,000	$160,000	'	'	'
Annual retirement benefit	'	35,000	'	'	'	'
Retirement benefit period	'	'15 years	'	'	'	'
Additional annual retirement benefit with CEO	'	35,000	'	'	'	'
Operations related to retirement obligation	'	0	1,000	5,000	'	'
Employees contributions to their annual salary	'	50.00%	'	'	'	'
Company's contributions to employees salary	'	715,000	628,000	596,000	'	'
Rate of return of long term equity securities	'	10.00%	'	'	'	'
Expected contributions by company to plan in 2014	'	160,000	'	'	'	'
Chief Executive Officer [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Amount contributed upon retirement	'	722,000	'	'	'	'
President [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Amount contributed upon retirement	'	381,000	'	'	'	'
Equity [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Target portfolio allocations equities	'	60.00%	'	'	'	'
Debt Securities [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Target portfolio allocations equities	'	30.00%	'	'	'	'
Commodity [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Target portfolio allocations equities	'	5.00%	'	'	'	'
Cash [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Target portfolio allocations equities	'	5.00%	'	'	'	'
Minimum [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Rate of return of fixed income securities	'	1.00%	'	'	'	'
Maximum [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Rate of return of fixed income securities	'	5.00%	'	'	'	'
Deferred Compensation Arrangements [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Charges deferred compensation plans	'	'	'	'	'	'
Accrued liability on deferred compensation plans	'	270,000	271,000	'	'	'
Deferred Compensation Arrangements [Member] | Minimum [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Retirement benefit period	'	'15 years	'	'	'	'
Deferred Compensation Arrangements [Member] | Maximum [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Retirement benefit period	'	'10 years	'	'	'	'
Supplemental Executive Retirement Plan [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Annual retirement benefit	90,000	'	'	'	150,000	150,000
Retirement benefit period	'10 years	'	'	'	'15 years	'15 years
Compensation expense	'	247,000	434,000	233,000	'	'
Supplemental Executive Retirement Plan [Member] | Somerset Hills Bancorp [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Retirement benefit period	'	'15 years	'	'	'	'
Employee benefit plan liability	'	590,000	'	'	'	'
Compensation expense	'	50,000	'	'	'	'
Supplemental Executive Retirement Plan [Member] | Somerset Hills Bancorp [Member] | Chief Executive Officer [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Annual retirement benefit	'	48,000	'	'	'	'
Supplemental Executive Retirement Plan [Member] | Somerset Hills Bancorp [Member] | Chief Financial Officer [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Annual retirement benefit	'	24,000	'	'	'	'
Profit Sharing Plan [Member]	'	'	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'	'	'
Contributions made by company to plans	'	$600,000	$625,000	$675,000	'	'

Employee_Benefit_Plans_Summary

Employee Benefit Plans - Summary of Fair Value and Portfolio Allocations of Plan Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	$1,987	$1,766	$1,484
Fair value and portfolio allocations of plan assets, Percent of Assets	100.00%	100.00%	'
Cash and Cash Equivalents [Member]	'	'	'
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	89	125	'
Fair value and portfolio allocations of plan assets, Percent of Assets	5.00%	7.00%	'
Fixed Income Mutual Funds [Member]	'	'	'
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	568	513	'
Fair value and portfolio allocations of plan assets, Percent of Assets	29.00%	29.00%	'
U.S. Large-Cap funds [Member]	'	'	'
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	466	394	'
Fair value and portfolio allocations of plan assets, Percent of Assets	23.00%	22.00%	'
U.S. Mid- and Small-Cap funds [Member]	'	'	'
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	148	124	'
Fair value and portfolio allocations of plan assets, Percent of Assets	7.00%	7.00%	'
U.S. Balanced funds [Member]	'	'	'
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	315	252	'
Fair value and portfolio allocations of plan assets, Percent of Assets	16.00%	14.00%	'
International funds [Member]	'	'	'
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	301	275	'
Fair value and portfolio allocations of plan assets, Percent of Assets	15.00%	16.00%	'
Commodity Funds [Member]	'	'	'
Net Investment Income [Line Items]	'	'	'
Fair value and portfolio allocations of plan assets, Market Value	$100	$83	'
Fair value and portfolio allocations of plan assets, Percent of Assets	5.00%	5.00%	'

Employee_Benefit_Plans_Summary1

Employee Benefit Plans - Summary of Accumulated Benefit Obligation (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Compensation And Retirement Disclosure [Abstract]	'	'
Accumulated postretirement benefit obligation	$2,407	$2,200
Interest cost	90	87
Actuarial (gain) loss	-295	176
Estimated benefit payments	-175	-56
Total accumulated postretirement benefit obligation	2,027	2,407
Fair value of plan assets beginning of period	1,766	1,484
Return on plan assets	236	178
Benefits paid	-175	-56
Contribution	160	160
Fair value of plan assets at end of year	1,987	1,766
Funded status	-40	-641
Unrecognized net actuarial loss	'	'
Liability	-40	-641
Accumulated benefit obligation	$2,027	$2,407

Employee_Benefit_Plans_Compone

Employee Benefit Plans - Components of Net Periodic Pension Cost (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Interest cost on APBO	$90	$87	'
Pension Plans, Defined Benefit [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Amortization of actuarial loss	82	72	47
Interest cost on APBO	90	87	97
Expected return on plan assets	-72	-76	-89
Net periodic benefit expense	$100	$83	$55

Employee_Benefit_Plans_Summary2

Employee Benefit Plans - Summary of Estimated Future Benefit Payment (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Compensation And Retirement Disclosure [Abstract]	'
2014	$138
2015	65
2016	153
2017	178
2018	142
2019-2023	$577

Employee_Benefit_Plans_Summary3

Employee Benefit Plans - Summary of Assumptions Used to Determine Pension Obligation and Net Periodic Pension Cost (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Compensation And Retirement Disclosure [Abstract]	'	'
Discounted rate	4.75%	3.75%
Expected return on plan assets	4.75%	4.00%
Rate of Compensation	0.00%	0.00%

Directors_Retirement_Plan_Addi

Directors Retirement Plan - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Service retire years minimum	'	'5 years	'
Service retire years maximum	'	'10 years	'
Plan assets of director's retirement plan	$1,987,000	$1,766,000	$1,484,000
Contribution to the director's retirement plan	160,000	'	'
Accumulated other comprehensive loss expected to be recognized as a component of net periodic benefit cost	26,000	'	'
Director's Retirement Plan [Member]	'	'	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Discount rate of directors retirement plan	4.75%	3.75%	'
Plan assets of director's retirement plan	'	'	'
Contribution to the director's retirement plan	65,000	'	'
Minimum [Member]	'	'	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Remuneration rate for board of directors	'	5,000	'
Maximum [Member]	'	'	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Remuneration rate for board of directors	'	$17,500	'

Directors_Retirement_Plan_Stat

Directors Retirement Plan - Status of Directors Retirement Plan (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Accrued plan cost included in other liabilities	$2,027	$2,407	$2,200
Director [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Accrued plan cost included in other liabilities	885	1,093	'
Recognized in accumulated other comprehensive income	'	'	'
Net actuarial (gain) loss	-198	82	'
Unrecognized prior service cost	'	'	'
Amounts not recognized as a component of net postretirement benefit cost (benefit)	($198)	$82	'

Directors_Retirement_Plan_Comp

Directors Retirement Plan - Components of Net Periodic Plan Cost for Retirement Plan (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net periodic plan cost included the following components:	'	'	'
Interest cost	$90	$87	'
Director's Retirement Plan [Member]	'	'	'
Net periodic plan cost included the following components:	'	'	'
Service cost	29	30	24
Interest cost	36	41	48
Amortization of prior service cost	21	26	23
Net periodic benefit expense	$86	$97	$95

Directors_Retirement_Plan_Bene

Directors Retirement Plan - Benefits Expected to be Paid (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]	'
2014	$138
2015	65
2016	153
2017	178
2018	142
2019-2023	577
Director [Member]	'
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]	'
2014	65
2015	75
2016	75
2017	70
2018	68
2019-2023	$175

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

31-May-13

31-May-13

31-May-13

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

21-May-09

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Key Employee [Member]

Key Employee [Member]

Non-Employee Directors [Member]

Non-Employee Directors 1 [Member]

Non-Employee Directors 2 [Member]

Director [Member]

Director [Member]

2009 Equity Compensation Program [Member]

2009 Equity Compensation Program [Member]

2009 Equity Compensation Program [Member]

2009 Equity Compensation Program [Member]

2009 Equity Compensation Program [Member]

Somerset Hills' Stock Option Plans [Member]

Directors

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares authorized

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,488,748

2,200,000

'

'

'

'

Granted, Shares

426,372

0

0

'

'

'

'

'

'

'

'

50,000

25,000

25,000

'

'

'

'

104,182

91,269

100,112

376,372

Number of non-employee directors

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price

$7.03

'

'

'

'

'

'

'

'

'

'

$9.91

'

'

'

'

'

'

'

'

'

$6.65

Share based compensation arrangement by share based payment award options exercisable description

'In five equal installments beginning on the date of grant and continuing on the next four anniversaries of the date of grant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Options outstanding

490,120

475,697

'

'

'

'

'

'

'

199,900

295,912

'

'

'

197,881

179,785

'

'

'

'

'

92,339

Excess tax benefits (losses) of stock based compensation

$142,000

$4,000

($3,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized compensation cost

'

'

'

1,400,000

'

'

124,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based compensation expense

'

'

'

823,000

724,000

584,000

72,000

22,000

43,000

'

'

'

'

'

'

'

'

'

206,000

173,000

188,000

'

Aggregate intrinsic value of options exercised

1,500,000

0

78,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash receipts due to exercise of stock options

2,200,000

'

72,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of options vested

$52,000

$34,000

'

$896,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted restricted stock, fair value

'

'

'

$9.87

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$9.88

$9.50

$9.40

'

Vesting period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'5 years

'5 years

'

Unrecognized compensation expense, period of recognition

'

'

'

'2 years 9 months 18 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Weighted Average Assumptions Used to Estimate Options Using Black-Scholes Option Pricing Model (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Black Scholes Method Used [Line Items]	'
Risk-free interest rates	1.55%
Expected dividend yield	2.82%
Expected volatility	45.45%
Expected lives (years)	'7 years
Weighted average fair value of options granted	$3.48
Somerset Hills Bancorp [Member]	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Black Scholes Method Used [Line Items]	'
Expected dividend yield	2.82%
Weighted average fair value of options granted	$3.98
Minimum [Member] | Somerset Hills Bancorp [Member]	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Black Scholes Method Used [Line Items]	'
Risk-free interest rates	0.04%
Expected volatility	13.00%
Expected lives (years)	'3 months
Maximum [Member] | Somerset Hills Bancorp [Member]	'
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Black Scholes Method Used [Line Items]	'
Risk-free interest rates	1.55%
Expected volatility	47.00%
Expected lives (years)	'7 years

StockBased_Compensation_Summar1

Stock-Based Compensation - Summary of Status of Company's Option Plans and Changes During Year (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Outstanding, Number of shares, Beginning balance	475,697	'	'
Granted, Number of shares	426,372	0	0
Exercised, Number of shares	-346,869	'	'
Expired, Number of shares	-56,687	'	'
Forfeited, Number of shares	-8,393	'	'
Outstanding, Number of shares, Ending balance	490,120	475,697	'
Options exercisable, Number of shares, at year-end	444,607	'	'
Outstanding, Weighted average exercise price, Beginning balance	$12.31	'	'
Granted, Weighted average exercise price	$7.03	'	'
Exercised, Weighted average exercise price	$7.41	'	'
Expired, Weighted average exercise price	$12.14	'	'
Forfeited, Weighted average exercise price	$12.95	'	'
Outstanding, Weighted average exercise price, Ending balance	$11.19	$12.31	'
Options exercisable, Weighted average exercise price, at year-end	$11.35	'	'
Outstanding, Weighted average remaining contractual term (in years), Ending balance	'3 years 5 months 23 days	'	'
Options exercisable, Weighted average remaining contractual term (in years), at year-end	'2 years 10 months 28 days	'	'
Outstanding, Aggregate Intrinsic Value, Beginning balance	$53,853	'	'
Outstanding, Aggregate Intrinsic Value, Ending balance	754,938	53,853	'
Options exercisable, Aggregate Intrinsic Value, at year-end	$633,585	'	'

StockBased_Compensation_Summar2

Stock-Based Compensation - Summary of Company's Non-Vested Options Under Company's Option Plans (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding, Number of shares, Beginning balance	475,697
Outstanding, Number of shares, Ending balance	490,120
Outstanding, Weighted average exercise price, Beginning balance	$12.31
Granted, Weighted-average grant-date fair value	$7.03
Outstanding, Weighted average exercise price, Ending balance	$11.19
Non-vested Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding, Number of shares, Beginning balance	11,026
Granted, Shares	50,000
Vested, Shares	-15,513
Outstanding, Number of shares, Ending balance	45,513
Outstanding, Weighted average exercise price, Beginning balance	$3.11
Granted, Weighted-average grant-date fair value	$3.48
Vested, Weighted-average grant-date fair value	$3.36
Outstanding, Weighted average exercise price, Ending balance	$3.43

StockBased_Compensation_Summar3

Stock-Based Compensation - Summary of Company's Restricted Stock (Detail) (Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2013
Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding, Number of shares, Beginning balance	222,556
Granted, Number of shares	104,182
Vested, Number of shares	-72,396
Forfeited, Number of shares	-4,561
Outstanding, Number of shares, Ending balance	249,781
Outstanding, Weighted average price, Beginning balance	$9.15
Granted, Weighted average price	$9.87
Vested, Weighted average price	$8.65
Forfeited, Weighted average price	$9.99
Outstanding, Weighted average price, Ending balance	$9.58

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments And Contingencies Disclosure [Abstract]	'	'	'
Rent expense under long-term operating leases	$2,500,000	$2,100,000	$1,900,000
Rent expense to related parties	180,000	227,000	325,000
Litigation settlement, Amount	0	'	'
Plaintiff's attorneys' fees and costs	$52,500	'	'

Commitments_and_Contingencies_2

Commitments and Contingencies - Aggregate Future Minimum Commitments of Lease Payments (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies Disclosure [Abstract]	'
2014	$2,526
2015	2,296
2016	1,934
2017	1,550
2018	1,306
Thereafter	10,287
Total	$19,899

Financial_Instruments_with_Off2

Financial Instruments with Off-Balance-Sheet Risk and Concentrations of Credit Risk - Summary of Approximate Contract Amounts of Collateral or Other Security to Support Financial Instruments with Credit Risk (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial instruments whose contract amounts represent credit risk [Member]	'	'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'	'
Approximate contract amounts of collateral or other security	'	'
Commitments to extend credit [Member]	'	'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'	'
Fair value disclosure, off-balance sheet risks, amount, liability	589,619	430,641
Standby letters of credit and financial guarantees written [Member]	'	'
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]	'	'
Fair value disclosure, off-balance sheet risks, amount, liability	$9,244	$7,922

Financial_Instruments_with_Off3

Financial Instruments with Off-Balance-Sheet Risk and Concentrations of Credit Risk - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Offsetting [Abstract]	'	'
Additional funds to borrowers	$45,000	$54,000
Potential undiscounted amount of future payments, maximum	9,200,000	'
Expiry of letters of credit	'2024	'
Loan and lease commitments	589,600,000	'
Loan and lease commitments maturing within one year	486,700,000	'
Maturing after one year but within three years	55,500,000	'
Maturing after three years but within five years	766,000	'
Maturing after five years	46,600,000	'
Standby letters of credit	9,200,000	'
Standby letters of credit maturing within one year	8,700,000	'
Letters of credit maturing after one year but within three years	459,000	'
Letters of credit maturing after five years	$80,000	'

Comprehensive_Income_Component

Comprehensive Income - Components of Other Comprehensive Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unrealized gains (losses) on available for sale securities	'	'	'
Unrealized holding gains (losses) arising during period, Before tax amount	($13,675)	$2,697	$8,600
Less reclassification adjustment for net gains realized in net income, Before tax amount	839	1,049	1,229
Net unrealized gains (losses) on available for sale securities, Before tax amount	-14,514	1,648	7,371
Change in pension liabilities, Before tax amount	866	30	-176
Other comprehensive income (loss), net, Before tax amount	-13,648	1,678	7,195
Unrealized holding gains (losses) arising during period, Tax Benefit (Expense)	4,985	-969	-3,155
Less reclassification adjustment for net gains realized in net income, Tax Benefit (Expense)	-330	-367	-430
Net unrealized gains (losses) on available for sale securities, Tax Benefit (Expense)	5,315	-602	-2,725
Change in pension liabilities, Tax Benefit (Expense)	-278	-11	74
Other comprehensive income (loss), net, Tax Benefit (Expense)	5,037	-613	-2,651
Unrealized holding gains (losses) arising during period, Net of tax amount	-8,690	1,728	5,445
Less reclassification adjustment for net gains realized in net income, Net of tax amount	509	682	799
Net unrealized gains (losses) on available for sale securities, Net of tax amount	-9,199	1,046	4,646
Change in pension liabilities, Net of tax amount	588	19	-102
Other comprehensive income (loss)	($8,611)	$1,065	$4,544

Comprehensive_Income_Summary_o

Comprehensive Income - Summary of Changes in Accumulated Other Comprehensive Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Beginning Balance	$3,936	$2,871	($1,673)
Other comprehensive income (loss) before classifications	-8,102	1,747	5,343
Amounts reclassified from accumulated other comprehensive income	-509	-682	-799
Net current period other comprehensive income (loss)	-8,611	1,065	4,544
Ending balance	-4,675	3,936	2,871
Unrealized Gains and Losses on Available-for-Sale Securities [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Beginning Balance	4,552	3,506	-1,140
Other comprehensive income (loss) before classifications	-8,690	1,728	5,445
Amounts reclassified from accumulated other comprehensive income	-509	-682	-799
Net current period other comprehensive income (loss)	-9,199	1,046	4,646
Ending balance	-4,647	4,552	3,506
Pension Items [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'
Beginning Balance	-616	-635	-533
Other comprehensive income (loss) before classifications	588	19	-102
Amounts reclassified from accumulated other comprehensive income	'	'	'
Net current period other comprehensive income (loss)	588	19	-102
Ending balance	($28)	($616)	($635)

Fair_Value_Measurement_and_Fai2

Fair Value Measurement and Fair Value of Financial Instruments - Financial Assets and Liabilities are Classified (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets/Liabilities:	'	'
Investment securities, available for sale	$431,106	$393,710
U.S. Treasury and U.S. Government Agencies [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	70,165	86,571
Mortgage-Backed Securities, Residential [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	304,502	239,559
Obligations of States and Political Subdivisions [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	36,873	38,620
Equity Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	16,146	15,516
Fair Value, Measurements, Recurring [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	431,106	393,710
Other Assets	562	195
Total Assets	431,668	393,905
Other Liabilities	562	195
Total Liabilities	562	195
Fair Value, Measurements, Recurring [Member] | U.S. Treasury and U.S. Government Agencies [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	70,165	86,571
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities, Residential [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	304,502	239,559
Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	36,873	38,620
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	3,420	13,444
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	16,146	15,516
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Assets/Liabilities:	'	'
Other Liabilities	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	7,569	5,503
Other Assets	'	'
Total Assets	7,569	5,503
Other Liabilities	'	'
Total Liabilities	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Treasury and U.S. Government Agencies [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	4,330	3,493
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities, Residential [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	3,239	2,010
Significant Other Observable Inputs (Level 2) [Member]	'	'
Assets/Liabilities:	'	'
Other Liabilities	121,870	91,325
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	423,537	388,207
Other Assets	562	195
Total Assets	424,099	388,402
Other Liabilities	562	195
Total Liabilities	562	195
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Treasury and U.S. Government Agencies [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	65,835	83,078
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities, Residential [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	304,502	239,559
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	36,873	38,620
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	3,420	13,444
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	12,907	13,506
Significant Unobservable Inputs (Level 3) [Member]	'	'
Assets/Liabilities:	'	'
Other Liabilities	'	'
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Other Assets	'	'
Total Assets	'	'
Other Liabilities	'	'
Total Liabilities	'	'
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Treasury and U.S. Government Agencies [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities, Residential [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]	'	'
Assets/Liabilities:	'	'
Investment securities, available for sale	'	'

Fair_Value_Measurement_and_Fai3

Fair Value Measurement and Fair Value of Financial Instruments - Assets are Classified in their Entirety Based on Lowest Level of Input that is Significant to Fair Value Measurement (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Impaired Loans and Leases	$24,619	$31,531	$43,145
Loans held for sale	1,206	'	'
Other real estate owned and other repossessed assets	520	529	'
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Impaired Loans and Leases	'	'	'
Loans held for sale	'	'	'
Other real estate owned and other repossessed assets	'	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Impaired Loans and Leases	'	'	'
Loans held for sale	1,206	'	'
Other real estate owned and other repossessed assets	'	'	'
Significant Unobservable Inputs (Level 3) [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Impaired Loans and Leases	24,619	31,531	'
Loans held for sale	'	'	'
Other real estate owned and other repossessed assets	$520	$529	'

Fair_Value_Measurement_and_Fai4

Fair Value Measurement and Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Short-term municipal bond	5.2
Minimum [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount rates	5.00%
Capitalization rates	5.00%
Maximum [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Discount rates	11.00%
Capitalization rates	9.00%

Fair_Value_Measurement_and_Fai5

Fair Value Measurement and Fair Value of Financial Instruments - Carrying Values and Fair Values of Company's Financial Instruments (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial Instruments - Assets	'	'
Investment securities held to maturity	$100,394	$99,784
Loans and leases, net	2,439,195	2,117,912
Loans and leases	2,470,289	2,147,207
Carrying Value [Member]	'	'
Financial Instruments - Assets	'	'
Investment securities held to maturity	101,744	96,925
Federal Home Loan and other membership bank stock	7,938	5,382
Loans and leases, net	2,439,195	'
Loans and leases	'	2,146,843
Financial Instruments - Liabilities	'	'
Certificates of Deposit	296,086	303,792
Other borrowings	119,000	85,000
Subordinated debentures	41,238	51,548
Fair Value [Member]	'	'
Financial Instruments - Assets	'	'
Investment securities held to maturity	100,394	99,784
Federal Home Loan and other membership bank stock	7,938	5,382
Loans and leases, net	2,432,447	'
Loans and leases	'	2,154,507
Financial Instruments - Liabilities	'	'
Certificates of Deposit	296,237	305,398
Other borrowings	121,870	91,325
Subordinated debentures	27,835	33,403
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Financial Instruments - Assets	'	'
Investment securities held to maturity	'	'
Federal Home Loan and other membership bank stock	'	'
Loans and leases, net	'	'
Loans and leases	'	'
Financial Instruments - Liabilities	'	'
Certificates of Deposit	'	'
Other borrowings	'	'
Subordinated debentures	'	'
Significant Other Observable Inputs (Level 2) [Member]	'	'
Financial Instruments - Assets	'	'
Investment securities held to maturity	95,194	87,336
Federal Home Loan and other membership bank stock	7,938	5,382
Loans and leases, net	'	'
Loans and leases	'	'
Financial Instruments - Liabilities	'	'
Certificates of Deposit	296,237	305,398
Other borrowings	121,870	91,325
Subordinated debentures	'	'
Significant Unobservable Inputs (Level 3) [Member]	'	'
Financial Instruments - Assets	'	'
Investment securities held to maturity	5,200	12,448
Federal Home Loan and other membership bank stock	'	'
Loans and leases, net	2,432,447	'
Loans and leases	'	2,154,507
Financial Instruments - Liabilities	'	'
Certificates of Deposit	'	'
Other borrowings	'	'
Subordinated debentures	$27,835	$33,403

Derivatives_Additional_Informa

Derivatives - Additional Information (Detail) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Securities pledged for collateral	$1.50

Derivatives_Summary_Informatio

Derivatives - Summary Information Regarding Derivatives (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
3rd Party Interest Rate Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Amount	$17,691	$6,400
Average Maturity (Years)	'6 years 8 months 12 days	'10 years 1 month 6 days
Weighted Average Rate Fixed	3.83%	4.63%
Weighted Average Variable Rate	'1Mo Libor + 2.21	'1Mo Libor + 2.61
Fair Value	-562	195
Customer Interest Rate Swaps [Member]	'	'
Derivative [Line Items]	'	'
Notional Amount	-17,691	-6,400
Average Maturity (Years)	'6 years 8 months 12 days	'10 years 1 month 6 days
Weighted Average Rate Fixed	3.83%	4.63%
Weighted Average Variable Rate	'1Mo Libor + 2.21	'1Mo Libor + 2.61
Fair Value	$562	($195)

Derivatives_Enforceable_Master

Derivatives - Enforceable Master Netting Arrangement (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Derivative [Line Items]	'	'
Gross Amounts of Recognized Assets	$17,691	$6,400
Gross Amounts Offset in the Balance Sheet, Assets	-17,129	-6,205
Fair Value, Assets	562	195
Financial Instruments, Assets	'	'
Gross Amounts of Recognized Liabilities	17,691	6,400
Gross Amounts Offset in the Balance Sheet, Liabilities	-17,129	-6,205
Fair Value, Liabilities	562	195
Financial Instruments, Liabilities	'	'
3rd Party Interest Rate Swaps [Member]	'	'
Derivative [Line Items]	'	'
Gross Amounts of Recognized Assets	'	6,400
Gross Amounts Offset in the Balance Sheet, Assets	'	-6,205
Fair Value, Assets	'	195
Financial Instruments, Assets	'	'
Gross Amounts of Recognized Liabilities	17,691	'
Gross Amounts Offset in the Balance Sheet, Liabilities	-17,129	'
Fair Value, Liabilities	562	'
Financial Instruments, Liabilities	'	'
Customer Interest Rate Swaps [Member]	'	'
Derivative [Line Items]	'	'
Gross Amounts of Recognized Assets	17,691	'
Gross Amounts Offset in the Balance Sheet, Assets	-17,129	'
Fair Value, Assets	562	'
Financial Instruments, Assets	'	'
Gross Amounts of Recognized Liabilities	'	6,400
Gross Amounts Offset in the Balance Sheet, Liabilities	'	-6,205
Fair Value, Liabilities	'	195
Financial Instruments, Liabilities	'	'

Regulatory_Matters_Additional_

Regulatory Matters - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Banking And Thrift [Abstract]	'
Percentage of surplus	'Not less than 50%
Amount available for dividends under the surplus capital requirements	$248.50

Regulatory_Matters_Summary_of_

Regulatory Matters - Summary of Capital Ratios (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk-weighted assets)	$313,499	$265,894
Tier 1 capital (to risk-weighted assets)	283,307	239,819
Tier 1 capital (to average assets)	283,307	239,819
Total capital (to risk-weighted assets), ratio	12.98%	12.77%
Tier 1 capital (to risk-weighted assets), ratio	11.73%	11.52%
Tier 1 capital (to average assets), ratio	8.90%	8.62%
Total capital (to risk-weighted assets), For capital adequacy purposes	193,166	166,561
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes	96,583	83,281
Tier 1 capital (to average assets), For capital adequacy purposes	127,281	111,256
Total capital (to risk-weighted assets), For capital adequacy purposes , ratio	8.00%	8.00%
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes, ratio	4.00%	4.00%
Tier 1 capital (to average assets), For capital adequacy purposes, ratio	4.00%	4.00%
Subsidiaries [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk-weighted assets)	296,334	247,680
Tier 1 capital (to risk-weighted assets)	266,195	221,650
Tier 1 capital (to average assets)	266,195	221,650
Total capital (to risk-weighted assets), ratio	12.29%	11.92%
Tier 1 capital (to risk-weighted assets), ratio	11.04%	10.66%
Tier 1 capital (to average assets), ratio	8.38%	7.98%
Total capital (to risk-weighted assets), For capital adequacy purposes	192,819	166,273
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes	96,409	83,137
Tier 1 capital (to average assets), For capital adequacy purposes	127,104	111,082
Total capital (to risk-weighted assets), For capital adequacy purposes , ratio	8.00%	8.00%
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes, ratio	4.00%	4.00%
Tier 1 capital (to average assets), For capital adequacy purposes, ratio	4.00%	4.00%
Total capital (to risk - weighted assets), To be well capitalized under prompt corrective action provisions	241,023	207,842
Tier 1 capital (to risk-weighted assets), To be well capitalized under prompt corrective action provisions	144,614	124,705
Tier 1 capital (to average assets), To be well capitalized under prompt corrective action provisions	$158,879	$138,852
Total capital (to risk - weighted assets), To be well capitalized under prompt corrective action provisions, ratio	10.00%	10.00%
Tier 1 capital (to risk-weighted assets), To be well capitalized under prompt corrective action provisions, ratio	6.00%	6.00%
Tier 1 capital (to average assets), To be well capitalized under prompt corrective action provisions, ratio	5.00%	5.00%

Condensed_Financial_Informatio2

Condensed Financial Information - Parent Company Only - Condensed Balance Sheets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
ASSETS	'	'	'	'
Cash and due from banks	$102,721	$107,545	$72,558	$49,278
Investment securities available for sale	431,106	393,710	'	'
Other assets	19,764	23,052	'	'
TOTAL ASSETS	3,317,791	2,918,703	'	'
LIABILITIES AND STOCKHOLDERS' EQUITY	'	'	'	'
Other liabilities	14,933	13,002	'	'
Subordinated debentures	41,238	51,548	'	'
Common stockholders' equity	351,424	280,867	259,783	260,709
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	3,317,791	2,918,703	'	'
Parent Company [Member]	'	'	'	'
ASSETS	'	'	'	'
Cash and due from banks	7,478	10,349	10,625	9,811
Investment securities available for sale	3,248	2,375	'	'
Investment in subsidiaries	374,738	313,575	'	'
Other assets	7,530	6,461	'	'
TOTAL ASSETS	392,994	332,760	'	'
LIABILITIES AND STOCKHOLDERS' EQUITY	'	'	'	'
Other liabilities	332	345	'	'
Subordinated debentures	41,238	51,548	'	'
Common stockholders' equity	351,424	280,867	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$392,994	$332,760	'	'

Condensed_Financial_Informatio3

Condensed Financial Information - Parent Company Only - Condensed Statements of Operations (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
INCOME	'	'	'
Other income	$2,093	$1,517	$1,500
EXPENSE	'	'	'
Noninterest expenses	78,741	67,673	68,151
Income before provision for income taxes	37,419	31,838	28,563
Income taxes benefit	12,450	10,096	8,712
NET INCOME	24,969	21,742	19,851
Interest on preferred stock and discount accretion	'	620	2,167
Net Income Available to Common Shareholders	24,969	21,122	17,684
Parent Company [Member]	'	'	'
INCOME	'	'	'
Dividends from subsidiaries	20,916	31,300	31,845
Other income	1,640	403	227
TOTAL INCOME	22,556	31,703	32,072
EXPENSE	'	'	'
Interest on subordinated debentures	1,286	3,664	4,443
Noninterest expenses	2,551	1,718	1,634
TOTAL EXPENSE	3,837	5,382	6,077
Income before provision for income taxes	18,719	26,321	25,995
Income taxes benefit	-722	-1,654	-1,960
Income before equity in undistributed income of subsidiaries	19,441	27,975	27,955
Equity in undistributed income (loss) of subsidiaries	5,528	-6,233	-8,104
NET INCOME	24,969	21,742	19,851
Interest on preferred stock and discount accretion	'	620	2,167
Net Income Available to Common Shareholders	$24,969	$21,122	$17,684

Condensed_Financial_Informatio4

Condensed Financial Information - Parent Company Only - Condensed Statements of Cash Flows (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'
Net income	$24,969	$21,742	$19,851
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'	'
Share based compensation	895	746	627
Gain on securities	-839	-1,049	-1,229
Gain on early extinguishment	-1,197	'	'
Increase in other assets	7,366	2,107	2,162
Increase (decrease) in other liabilities	995	1,089	379
NET CASH PROVIDED BY OPERATING ACTIVITIES	50,728	48,591	49,930
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Purchases of securities	-187,452	-144,652	-234,230
Proceeds from sale of securities available for sale	64,020	97,824	92,409
NET CASH USED IN INVESTING ACTIVITIES	-66,066	-82,518	-34,349
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Issuance of stock to the dividend reinvestment and stock purchase plan	186	160	185
Proceeds on issuance of stock, net	'	25,040	'
Redemption of subordinated debentures, net	-9,113	-25,000	'
Redemption of preferred stock	'	-21,800	-20,000
Excess tax benefits	142	4	-3
Exercise of stock options	2,209	'	72
NET CASH PROVIDED BY FINANCING ACTIVITIES	10,514	68,914	7,699
Net increase (decrease) in cash and cash equivalents	-4,824	34,987	23,280
Cash and cash equivalents, beginning of year	107,545	72,558	49,278
CASH AND CASH EQUIVALENTS, END OF YEAR	102,721	107,545	72,558
Parent Company [Member]	'	'	'
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'
Net income	24,969	21,742	19,851
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'	'
Share based compensation	895	746	627
Gain on securities	-359	'	'
Gain on land held for sale	'	-235	'
Gain on early extinguishment	-1,197	'	'
Increase in other assets	-954	-1,553	-1,660
Increase (decrease) in other liabilities	25	-610	3
Equity in undistributed (income) loss of subsidiaries	-5,528	6,233	8,104
NET CASH PROVIDED BY OPERATING ACTIVITIES	17,851	26,323	26,925
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Net cash used in acquisition	-6,233	'	'
Purchases of securities	-415	-53	-38
Sale of land held for sale	'	1,042	'
Proceeds from sale of securities available for sale	654	'	'
Contribution to subsidiary	'	'	'
NET CASH USED IN INVESTING ACTIVITIES	-5,994	989	-38
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Cash dividends paid on common and preferred stock	-8,152	-5,992	-6,327
Issuance of stock to the dividend reinvestment and stock purchase plan	186	160	185
Proceeds on issuance of stock, net	'	25,040	'
Redemption of subordinated debentures, net	-9,113	-25,000	'
Redemption of preferred stock	'	-19,000	-20,000
Warrant repurchase	'	-2,800	'
Excess tax benefits	142	4	-3
Exercise of stock options	2,209	'	72
NET CASH PROVIDED BY FINANCING ACTIVITIES	-14,728	-27,588	-26,073
Net increase (decrease) in cash and cash equivalents	-2,871	-276	814
Cash and cash equivalents, beginning of year	10,349	10,625	9,811
CASH AND CASH EQUIVALENTS, END OF YEAR	$7,478	$10,349	$10,625