Seacoast Banking Corporation of Florida (SBCF) 10-K 17 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 28, 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	'	'
Entity Registrant Name	'SEACOAST BANKING CORP OF FLORIDA	'	'
Entity Central Index Key	'0000730708	'	'
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	'	25,969,099	'
Entity Public Float	'	'	$129,409,445

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest on securities	'	'	'
Taxable	$12,856	$13,964	$17,500
Nontaxable	68	80	140
Interest and fees on loans	56,971	58,290	62,355
Interest on federal funds sold and interest bearing deposits	868	953	797
Total interest income	70,763	73,287	80,792
INTEREST EXPENSE	'	'	'
Interest on savings deposits	782	1,522	2,371
Interest on time certificates	1,947	3,969	8,615
Interest on short term borrowings	286	340	276
Interest on subordinated debt	934	1,035	1,084
Interest on other borrowings	1,608	1,612	1,607
Total interest expense	5,557	8,478	13,953
NET INTEREST INCOME	65,206	64,809	66,839
Provision for loan losses	3,188	10,796	1,974
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	62,018	54,013	64,865
NONINTEREST INCOME	'	'	'
Loss on sale of commercial loan	0	-1,238	0
Securities gains, net (includes net gains of $149 in other comprehensive income reclassifications)	419	7,619	1,220
Other	24,319	21,444	18,345
Total noninterest income	24,738	27,825	19,565
NONINTEREST EXPENSE	75,152	82,548	77,763
INCOME (LOSS) BEFORE INCOME TAXES	11,604	-710	6,667
Income taxes benefit	-40,385	0	0
NET INCOME (LOSS)	51,989	-710	6,667
Preferred stock dividends and accretion on preferred stock discount	4,073	3,748	3,748
NET INCOME (LOSS) AVAILABLE TO COMMON SHAREHOLDERS	$47,916	($4,458)	$2,919
Net income (loss) per share of common stock	'	'	'
Diluted	$2.44	($0.24)	$0.16
Basic	$2.46	($0.24)	$0.16
Average common shares outstanding	'	'	'
Diluted	19,650,005	18,748,757	18,760,215
Basic	19,449,560	18,748,757	18,702,397

Consolidated_Statements_of_Inc1

Consolidated Statements of Income (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]	'	'	'
Reclassification adjustment for securities gains included in net income	$149	$6,632	$354

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (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 (LOSS)	$51,989	($710)	$6,667
Other comprehensive income (loss):	'	'	'
Unrealized gains (losses) on securities available for sale	-22,532	3,227	5,884
Unrealized gains on transfer of securities held for investment into securities available for sale	724	0	0
Reclassification adjustment for gains included in net income	-149	-6,632	-354
Benefit (provision) for income taxes	8,475	1,315	-2,135
Total other comprehensive income (loss)	-13,482	-2,090	3,395
COMPREHENSIVE INCOME (LOSS)	$38,507	($2,800)	$10,062

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$48,561	$45,620
Interest bearing deposits with other banks	143,063	129,367
Total cash and cash equivalents	191,624	174,987
Securities available for sale (at fair value)	641,611	643,050
Securities held for investment (fair value: $14,542 in 2012)	0	13,818
Total securities	641,611	656,868
Loans available for sale	13,832	36,021
Loans, including deferred costs of $2,618 in 2013 and $1,530 in 2012	1,304,207	1,226,081
Less: Allowance for loan losses	-20,068	-22,104
Net loans	1,284,139	1,203,977
Bank premises and equipment, net	34,505	34,465
Other real estate owned	6,860	11,887
Other intangible assets	718	1,501
Other assets	95,651	54,223
TOTAL ASSETS	2,268,940	2,173,929
LIABILITIES	'	'
Demand deposits (noninterest bearing)	464,006	422,833
NOW	540,288	509,371
Savings deposits	192,491	164,956
Money market accounts	331,184	343,915
Other time deposits	154,743	182,495
Brokered time certificates	9,776	8,203
Time certificates of $100,000 or more	113,557	127,188
Total deposits	1,806,045	1,758,961
Federal funds purchased and securities sold under agreement to repurchase, maturing within 30 days	151,310	136,803
Borrowed funds	50,000	50,000
Subordinated debt	53,610	53,610
Other liabilities	9,371	9,009
Total liabilities	2,070,336	2,008,383
Commitments and Contingencies (Notes K and P)	'	'
SHAREHOLDERS' EQUITY	'	'
Series A preferred stock, par value $0.10 per share-authorized 4,000,000 shares, 2,000 shares of Series A issued and outstanding in 2012	0	48,746
Common stock, par value $0.10 per share authorized 60,000,000 shares, issued 23,638,373 and outstanding 23,637,434 shares in 2013 and authorized 60,000,000 shares, issued 18,975,129 and outstanding 18,967,434 shares in 2012	2,364	1,897
Additional paid-in capital	277,290	230,438
Accumulated deficit	-70,695	-118,611
Less: Treasury stock (939 shares in 2013 and 7,695 shares in 2012), at cost	-11	-62
Total shareholders' equity before accumulated other comprehensive income, net	208,948	162,408
Accumulated other comprehensive income, net	-10,344	3,138
TOTAL SHAREHOLDERS' EQUITY	198,604	165,546
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$2,268,940	$2,173,929

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Held for investment fair value	'	$14,542
Deferred costs of loans	$2,618	$1,530
Common stock, par value	$0.10	$0.10
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	23,638,373	18,975,129
Common stock, shares outstanding	23,637,434	18,967,434
Treasury Stock	939	7,695
Series A Preferred Stock [Member]	'	'
Preferred stock, par value	$0.10	$0.10
Preferred stock, shares authorized	4,000,000	4,000,000
Preferred stock, shares issued	'	2,000
Preferred stock, shares outstanding	'	2,000

Consolidated_Statement_of_Cash

Consolidated Statement 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	'	'	'
Interest received	$73,849	$78,119	$81,904
Fees and commissions received	24,168	20,814	18,453
Interest paid	-5,584	-9,003	-16,211
Cash paid to suppliers and employees	-65,405	-71,016	-66,705
Income taxes received (paid)	-157	2	-9
Origination of loans designated held for sale	-208,998	-188,064	-137,295
Sale of loans designated held for sale	231,187	167,921	143,019
Net change in other assets	792	-835	585
Net cash provided (used) by operating activities	49,852	-2,062	23,741
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Maturities of securities available for sale	155,627	133,651	115,287
Maturities of securities held for investment	0	6,395	7,733
Proceeds from sale of securities available for sale	67,330	256,102	52,689
Purchases of securities available for sale	-230,118	-384,120	-379,262
Purchases of securities held for investment	0	-500	-1,526
Net new loans and principal payments	-88,039	-54,633	-15,248
Proceeds from sale of loans	379	0	1,450
Proceeds from the sale of other real estate owned	8,843	18,369	38,075
Proceeds from sale of Federal Home Loan Bank and Federal Reserve Bank Stock	943	296	1,363
Purchase of Federal Home Loan Bank and Federal Reserve Bank Stock	-1,303	-142	-360
Additions to bank premises and equipment	-2,817	-3,839	-1,070
Net cash (used) by investing activities	-89,155	-28,421	-180,869
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Net increase in deposits	47,085	40,223	81,517
Net increase in federal funds purchased and repurchase agreements	14,507	551	38,039
Issuance of common stock, net of related expense	46,977	0	0
Repurchase of stock warrants, including related expense	0	-81	0
Stock based employee benefit plans	190	196	123
Redemption of preferred stock	-50,000	0	0
Dividends paid on preferred shares	-2,819	-2,500	-6,875
Net cash provided by financing activities	55,940	38,389	112,804
Net increase (decrease) in cash and cash equivalents	16,637	7,906	-44,324
Cash and cash equivalents at beginning of year	174,987	167,081	211,405
Cash and cash equivalents at end of year	$191,624	$174,987	$167,081

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Common Stock [Member]	Preferred Stock [Member]	Paid-in Capital/ Warrants [Member]	Retained Earnings (Accumulated Deficit) [Member]	Treasury Stock [Member]	Accumulated Comprehensive Income (Loss), Net [Member]
Share data in Thousands
Beginning Balance at Dec. 31, 2010	$166,299,000	$1,870,000	$46,248,000	$229,001,000	($112,652,000)	($1,000)	$1,833,000
Beginning Balance, shares at Dec. 31, 2010	'	18,697	2	'	'	'	'
Comprehensive income/loss	10,062,000	0	0	0	6,667,000	0	3,395,000
Cash dividends on preferred shares	-6,875,000	0	0	0	-6,875,000	0	0
Stock based compensation expense	273,000	0	0	273,000	0	0	0
Common stock issued for stock based employee benefit plans	318,000	24,000	0	349,000	-43,000	-12,000	0
Common stock issued for stock based employee benefit plans, shares	'	240	0	'	'	'	'
Accretion on preferred stock discount	0	0	1,249,000	0	-1,249,000	0	0
Ending Balance at Dec. 31, 2011	170,077,000	1,894,000	47,497,000	229,623,000	-114,152,000	-13,000	5,228,000
Ending Balance, shares at Dec. 31, 2011	'	18,937	2	'	'	'	'
Comprehensive income/loss	-2,800,000	0	0	0	-710,000	0	-2,090,000
Cash dividends on preferred shares	-2,500,000	0	0	0	-2,500,000	0	0
Stock based compensation expense	796,000	0	0	796,000	0	0	0
Common stock issued for stock based employee benefit plans	54,000	3,000	0	100,000	0	-49,000	0
Common stock issued for stock based employee benefit plans, shares	'	30	0	'	'	'	'
Purchase of stock warrant	-81,000	0	0	-81,000	0	0	0
Accretion on preferred stock discount	0	0	1,249,000	0	-1,249,000	0	0
Ending Balance at Dec. 31, 2012	165,546,000	1,897,000	48,746,000	230,438,000	-118,611,000	-62,000	3,138,000
Ending Balance, shares at Dec. 31, 2012	'	18,967	2	'	'	'	'
Comprehensive income/loss	38,507,000	0	0	0	51,989,000	0	-13,482,000
Cash dividends on preferred shares	-2,819,000	0	0	0	-2,819,000	0	0
Stock based compensation expense	246,000	0	0	246,000	0	0	0
Common stock issued for stock based employee benefit plans	148,000	2,000	0	95,000	0	51,000	0
Common stock issued for stock based employee benefit plans, shares	'	19	0	'	'	'	'
Issuance of common stock	46,976,000	465,000	0	46,511,000	0	0	0
Issuance of common stock, shares	'	4,652	0	'	'	'	'
Redemption of preferred stock	-50,000,000	0	-50,000,000	0	0	0	0
Redemption of preferred stock, shares	'	0	-2	'	'	'	'
Accretion on preferred stock discount	0	0	1,254,000	0	-1,254,000	0	0
Ending Balance at Dec. 31, 2013	$198,604,000	$2,364,000	$0	$277,290,000	($70,695,000)	($11,000)	($10,344,000)
Ending Balance, shares at Dec. 31, 2013	'	23,638	0	'	'	'	'

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	Note     A
	Significant Accounting Policies
	General: Seacoast Banking Corporation of Florida (“Company”) is a single segment bank holding company with one operating subsidiary bank, Seacoast National Bank (“Seacoast National”, together the “Company”). Seacoast National’s service area includes Okeechobee, Highlands, Hendry, Glades, DeSoto, Palm Beach, Martin, St. Lucie, Brevard, Indian River, Broward, Orange and Seminole counties, which are located in central and southeast Florida. The bank operates full service branches within its markets, and during 2013 opened five new loan production offices in Orlando, Fort Lauderdale and Boca Raton.
	The consolidated financial statements include the accounts of Seacoast and all its majority-owned subsidiaries but exclude five trusts created for the issuance of trust preferred securities. In consolidation, all significant intercompany accounts and transactions are eliminated.
	The accounting and reporting policies of the Company are in accordance with accounting principles generally accepted in the United States of America, and they conform to general practices within the applicable industries.
	Cash and Cash Equivalents: Cash and cash equivalents include cash and due from banks, interest-bearing bank balances and federal funds sold and securities purchased under resale agreements. Cash and cash equivalents have original maturities of three months or less, and accordingly, the carrying amount of these instruments is deemed to be a reasonable estimate of fair value.
	Securities Purchased and Sold Agreements: Securities purchased under resale agreements and securities sold under repurchase agreements are generally accounted for as collateralized financing transactions and are recorded at the amount at which the securities were acquired or sold plus accrued interest. It is the Company’s policy to take possession of securities purchased under resale agreements, which are primarily U.S. Government and Government agency securities. The fair value of securities purchased and sold is monitored and collateral is obtained from or returned to the counterparty when appropriate.
	Use of Estimates: The preparation of these financial statements requires the use of certain estimates by management in determining the Company’s assets, liabilities, revenues and expenses, and contingent liabilities. Specific areas, among others, requiring the application of management’s estimates include determination of the allowance for loan losses, the valuation of investment securities available for sale, fair value of impaired loans, contingent liabilities, other real estate owned, and valuation of deferred tax valuation allowance. Actual results could differ from those estimates.
	Securities: Securities are classified at date of purchase as trading, available for sale or held to maturity. Securities that may be sold as part of the Company’s asset/liability management or in response to, or in anticipation of changes in interest rates and resulting prepayment risk, or for other factors are stated at fair value with unrealized gains or losses reflected as a component of shareholders’ equity net of tax or included in noninterest income as appropriate. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available. Debt securities that the Company has the ability and intent to hold to maturity are carried at amortized cost.
	Realized gains and losses, including other than temporary impairments, are included in noninterest income as investment securities gains (losses). Interest and dividends on securities, including amortization of premiums and accretion of discounts, is recognized in interest income on an accrual basis using the interest method. The Company anticipates prepayments of principal in the calculation of the effective yield for collateralized mortgage obligations and mortgage backed securities by obtaining estimates of prepayments from independent third parties. The adjusted cost of each specific security sold is used to compute realized gains or losses on the sale of securities on a trade date basis.
	On a quarterly basis, the Company makes an assessment to determine whether there have been any events or economic circumstances to indicate that a security is impaired on an other-than-temporary basis. Management considers many factors including the length of time the security has had a fair value less than the cost basis; our intent and ability to hold the security for a period of time sufficient for a recovery in value; recent events specific to the issuer or industry; and for debt securities, external credit ratings and recent downgrades. Securities on which there is an unrealized loss that is deemed to be other-than temporary are written down to fair value with the write-down recorded as a realized loss.
	For securities which are transferred into held to maturity from available for sale the unrealized gain or loss at the date of transfer is reported as a component of shareholders’ equity and is amortized over the remaining life as an adjustment of yield using the interest method.
	Seacoast National is a member of the Federal Home Loan Bank system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.
	Loans: Loans are recognized at the principal amount outstanding, net of unearned income and amounts charged off. Unearned income includes discounts, premiums and deferred loan origination fees reduced by loan origination costs. Unearned income on loans is amortized to interest income over the life of the related loan using the effective interest rate method. Interest income is recognized on an accrual basis.
	Fees received for providing loan commitments and letters of credit that may result in loans are typically deferred and amortized to interest income over the life of the related loan, beginning with the initial borrowing. Fees on commitments and letters of credit are amortized to noninterest income as banking fees and commissions on a straight-line basis over the commitment period when funding is not expected.
	Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are considered held for investment.
	The Company accounts for loans in accordance with ASC topics 310 and 470, when due to a deterioration in a borrower’s financial position, the Company grants concessions that would not otherwise be considered. Troubled debt restructured (TDR) loans are tested for impairment and placed in nonaccrual status. If borrowers perform pursuant to the modified loan terms for at least six months and the remaining loan balances are considered collectible, the loans are returned to accrual status. When the Company modifies the terms of an existing loan that is not considered a troubled debt restructuring, the Company follows the provisions of ASC 310 “Creditor’s Accounting for a Modification or Exchange of Debt Instruments.”
	A loan is considered to be impaired when based on current information, it is probable the Company will not receive all amounts due in accordance with the contractual terms of a loan agreement. The fair value is measured based on either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. A loan is also considered impaired if its terms are modified in a troubled debt restructuring. When the ultimate collectibility of the principal balance of an impaired loan is in doubt, all cash receipts are applied to principal. Once the recorded principal balance has been reduced to zero, future cash receipts are applied to interest income, to the extent any interest has been forgone, and then they are recorded as recoveries of any amounts previously charged off.
	The accrual of interest is generally discontinued on loans and leases, except consumer loans, that become 90 days past due as to principal or interest unless collection of both principal and interest is assured by way of collateralization, guarantees or other security. Generally, loans past due 90 days or more are placed on nonaccrual status regardless of security. When interest accruals are discontinued, unpaid interest is reversed against interest income. Consumer loans that become 120 days past due are generally charged off. When borrowers demonstrate over an extended period the ability to repay a loan in accordance with the contractual terms of a loan classified as nonaccrual, the loan is returned to accrual status. Interest income on nonaccrual loans is either recorded using the cash basis method of accounting or recognized after the principal has been reduced to zero, depending on the type of loan.
	Derivatives Used for Risk Management: The Company may designate a derivative as either a hedge of the fair value of a recognized fixed rate asset or liability or an unrecognized firm commitment (“fair value” hedge), a hedge of a forecasted transaction or of the variability of future cash flows of a floating rate asset or liability (“cash flow” hedge). All derivatives are recorded as other assets or other liabilities on the balance sheet at their respective fair values with unrealized gains and losses recorded either in other comprehensive income or in the results of operations, depending on the purpose for which the derivative is held. Derivatives that do not meet the criteria for designation as a hedge at inception, or fail to meet the criteria thereafter, are carried at fair value with unrealized gains and losses recorded in the results of operations.
	To the extent of the effectiveness of a cash flow hedge, changes in the fair value of a derivative that is designated and qualifies as a cash flow hedge are recorded in other comprehensive income. The net periodic interest settlement on derivatives is treated as an adjustment to the interest income or interest expense of the hedged assets or liabilities.
	At inception of a hedge transaction, the Company formally documents the hedge relationship and the risk management objective and strategy for undertaking the hedge. This process includes identification of the hedging instrument, hedged item, risk being hedged and the methodology for measuring ineffectiveness. In addition, the Company assesses both at the inception of the hedge and on an ongoing quarterly basis, whether the derivative used in the hedging transaction has been highly effective in offsetting changes in fair value or cash flows of the hedged item, and whether the derivative as a hedging instrument is no longer appropriate.
	The Company discontinues hedge accounting prospectively when either it is determined that the derivative is no longer highly effective in offsetting changes in the fair value or cash flows of a hedged item; the derivative expires or is sold, terminated or exercised; the derivative is de-designated because it is unlikely that a forecasted transaction will occur; or management determines that designation of the derivative as a hedging instrument is no longer appropriate.
	When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted as an adjustment to yield over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transaction are still expected to occur, unrealized gains and losses that are accumulated in other comprehensive income are included in the results of operations in the same period when the results of operations are also affected by the hedged cash flow. They are recognized in the results of operations immediately if the cash flow hedge was discontinued because a forecasted transaction is not expected to occur.
	Certain commitments to sell loans are derivatives. These commitments are recorded as a freestanding derivative and classified as an other asset or liability.
	Loans Held for Sale: Loans are classified as held for sale based on management’s intent to sell the loans, either as part of a core business strategy or related to a risk mitigation strategy. Loans held for sale and any related unfunded lending commitments are recorded at fair value, if elected or the lower of cost (which is the carrying amount net of deferred fees and costs and applicable allowance for loan losses and reserve for unfunded lending commitments) or fair market value less costs to sell. Adjustments to reflect unrealized gains and losses resulting from changes in fair value and realized gains and losses upon ultimate sale of the loans are classified as noninterest income in the Consolidated Statements of Income. At the time of the transfer to loans held for sale, if the fair market value is less than cost, the difference is recorded as additional provision for credit losses in the results of operations. Fair market value is determined based on quoted market prices for the same or similar loans, outstanding investor commitments or discounted cash flow analyses using market assumptions.
	At December 31, 2013 fair market value for substantially all the loans in loans held for sale were obtained by reference to prices for the same or similar loans from recent transactions. For a relationship that includes an unfunded lending commitment, the cost basis is the outstanding balance of the loan net of the allowance for loan losses and net of any reserve for unfunded lending commitments. This cost basis is compared to the fair market value of the entire relationship including the unfunded lending commitment.
	Individual loans or pools of loans are transferred from the loan portfolio to loans held for sale when the intent to hold the loans has changed and there is a plan to sell the loans within a reasonable period of time. Loans held for sale are reviewed quarterly. Subsequent declines or recoveries of previous declines in the fair market value of loans held for sale are recorded in other fee income in the results of operations. Fair market value changes occur due to changes in interest rates, the borrower’s credit, the secondary loan market and the market for a borrower’s debt. If an unfunded lending commitment expires before a sale occurs, the reserve associated with the unfunded lending commitment is recognized as a credit to other fee income in the results of operations.
	Fair Value Measurements: The Company measures or monitors many of its assets and liabilities on a fair value basis. Certain assets and liabilities are measured on a recurring basis. Examples of these include derivative instruments, available for sale and trading securities, loans held for sale and long-term debt. Additionally, fair value is used on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. Examples of these non-recurring uses of fair value include certain loans held for sale accounted for on a lower of cost or fair value, mortgage servicing rights, goodwill, and long-lived assets. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, the Company uses various valuation techniques and assumptions when estimating fair value.
	The Company applied the following fair value hierarchy:
	Level 1 – Assets or liabilities for which the identical item is traded on an active exchange, such as publicly-traded instruments or futures contracts.
	Level 2 – Assets and liabilities valued based on observable market data for similar instruments.
	Level 3 – Assets and liabilities for which significant valuation assumptions are not readily observable in the market; instruments valued based on the best available data, some of which is internally-developed, and considers risk premiums that a market participant would require.
	When determining the fair value measurements for assets and liabilities required or permitted to be recorded at and/or marked to fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability. When possible, the Company looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Company looks to market observable data for similar assets and liabilities. Nevertheless, certain assets and liabilities are not actively traded in observable markets and the Company must use alternative valuation techniques to derive a fair value measurement.
	Other Real Estate Owned: Other real estate owned (“OREO”) consists of real estate acquired in lieu of unpaid loan balances. These assets are carried at an amount equal to the loan balance prior to foreclosure plus costs incurred for improvements to the property, but no more than the estimated fair value of the property less estimated selling costs. Any valuation adjustments required at the date of transfer are charged to the allowance for loan losses. Subsequently, unrealized losses and realized gains and losses are included in other noninterest expense. Operating results from OREO are recorded in other noninterest expense.
	Bank Premises and Equipment: Bank premises and equipment are stated at cost, less accumulated depreciation and amortization. Premises and equipment include certain costs associated with the acquisition of leasehold improvements. Depreciation and amortization are recognized principally by the straight-line method, over the estimated useful lives as follows: buildings—25-40 years, leasehold improvements—5-25 years, furniture and equipment—3-12 years. Premises and equipment and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value.
	Other Intangible Assets: Intangible assets with indefinite lives are not subject to amortization. Rather they are subject to impairment tests at least annually, or more often if events or circumstances indicate there may be impairment. Intangible assets with finite lives continue to be amortized over the period the Company expects to benefit from such assets and are periodically reviewed to determine whether there have been any events or circumstances to indicate the recorded amount is not recoverable from projected undiscounted net operating cash flows. A loss is recognized to reduce the carrying amount to fair value, where appropriate.
	Revenue Recognition: Revenue is recognized when the earnings process is complete and collectibility is assured. Brokerage fees and commissions are recognized on a trade date basis. Asset management fees, measured by assets at a particular date, are accrued as earned. Commission expenses are recorded when the related revenue is recognized.
	Allowance for Loan Losses and Reserve for Unfunded Lending Commitments: The Company has developed policies and procedures for assessing the adequacy of the allowance for loan losses and reserve for unfunded lending commitments that reflect the evaluation of credit risk after careful consideration of all available information. Where appropriate this assessment includes monitoring qualitative and quantitative trends including changes in levels of past due, criticized and nonperforming loans. In developing this assessment, the Company must necessarily rely on estimates and exercise judgment regarding matters where the ultimate outcome is unknown such as economic factors, developments affecting companies in specific industries and issues with respect to single borrowers. Depending on changes in circumstances, future assessments of credit risk may yield materially different results, which may result in an increase or a decrease in the allowance for loan losses.
	The allowance for loan losses and reserve for unfunded lending commitments is maintained at a level the Company believes is adequate to absorb probable losses inherent in the loan portfolio and unfunded lending commitments as of the date of the consolidated financial statements. The Company employs a variety of modeling and estimation tools in developing the appropriate allowance for loan losses and reserve for unfunded lending commitments. The allowance for loan losses and reserve for unfunded lending commitments consists of formula-based components for both commercial and consumer loans, allowance for impaired commercial loans and allowance related to additional factors that are believed indicative of current trends and business cycle issues.
	If necessary, a specific allowance is established for individually evaluated impaired loans. The specific allowance established for these loans is based on a thorough analysis of the most probable source of repayment, including the present value of the loan’s expected future cash flows, the loan’s estimated market value, or the estimated fair value of the underlying collateral depending on the most likely source of repayment. General allowances are established for loans grouped into pools based on similar characteristics. In this process, general allowance factors are based on an analysis of historical charge-off experience, portfolio trends, regional and national economic conditions, and expected loss given default derived from the Company’s internal risk rating process.
	The Company monitors qualitative and quantitative trends in the loan portfolio, including changes in the levels of past due, criticized and nonperforming loans. The distribution of the allowance for loan losses and reserve for unfunded lending commitments between the various components does not diminish the fact that the entire allowance for loan losses and reserve for unfunded lending commitments is available to absorb credit losses in the loan portfolio. The principal focus is, therefore, on the adequacy of the total allowance for loan losses and reserve for unfunded lending commitments.
	In addition, various regulatory agencies, as an integral part of their examination process, periodically review the Company’s bank subsidiary’s allowance for loan losses and reserve for unfunded lending commitments. These agencies may require such subsidiaries to recognize changes to the allowance for loan losses and reserve for unfunded lending commitments based on their judgments about information available to them at the time of their examination.
	Income Taxes: The Company uses the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are determined based on temporary differences between the carrying amounts of assets and liabilities in the consolidated financial statements and their related tax bases and are measured using the enacted tax rates and laws that are in effect. A valuation allowance is recognized for a deferred tax asset if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. The effect on deferred tax assets and liabilities of a change in rates is recognized as income or expense in the period in which the change occurs. See Note L, Income Taxes for related disclosures.
	Earnings per Share: Basic earnings per share are computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding during each period. Diluted earnings per share are based on the weighted-average number of common shares outstanding during each period, plus common share equivalents calculated for stock options and performance restricted stock outstanding using the treasury stock method.
	Stock-Based Compensation: The four stock option plans are accounted for under ASC Topic 718 and the fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with market assumptions. This amount is amortized on a straight-line basis over the vesting period, generally five years. (See Note J)
	For restricted stock awards, which generally vest based on continued service with the Company, the deferred compensation is measured as the fair value of the shares on the date of grant, and the deferred compensation is amortized as salaries and employee benefits in accordance with the applicable vesting schedule, generally straight-line over five years. Some shares vest based upon the Company achieving certain performance goals and salary amortization expense is based on an estimate of the most likely results on a straight line basis.

Recently_Issued_Accounting_Sta

Recently Issued Accounting Standards, Not Adopted as of December 31, 2013	12 Months Ended
	Dec. 31, 2013
Accounting Changes And Error Corrections [Abstract]	'
Recently Issued Accounting Standards, Not Adopted as of December 31, 2013	'
	Note    B
	Recently Issued Accounting Standards, Not Adopted as of December 31, 2013
	In July of 2013, the Financial Accounting Standards Board (“FASB”) issued amended guidance that resolves the diversity in practice for the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This new accounting guidance requires the netting of unrecognized tax benefits (“UTBs”) against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. Under the new standard, UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. The new standard requires prospective adoption but allows retrospective adoption for all periods presented. We will adopt the FASB’s amended guidance for our annual reporting period beginning January 1, 2014. We do not expect the adoption of the guidance to have a significant impact on our financial position, results of operations or cash flows.
	In March of 2013, the FASB issued amended guidance that resolves the diversity in practice for the accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or groups of assets within a foreign entity. The amended guidance requires that when a parent entity ceases to have a controlling financial interest in a subsidiary or group of assets within a foreign entity, the parent is required to release any related cumulative translation adjustment into net income in instances when a sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary or group of assets had resided. Additionally, the amended guidance clarifies that the sale of an investment in a foreign entity includes both (1) events that result in the loss of a controlling financial interest in a foreign entity and (2) events that result in an acquirer obtaining control of an acquiree in which it held an equity interest immediately before the acquisition date. In these instances, an entity is required to release the cumulative translation adjustment into net income. We will adopt the FASB’s amended guidance during the three months ended March 31, 2014. We do not expect the adoption of the guidance to have a significant impact on our financial position, results of operations or cash flows.

Cash_Dividend_and_Loan_Restric

Cash, Dividend and Loan Restrictions	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Cash, Dividend and Loan Restrictions	'
	Note C    Cash, Dividend and Loan Restrictions
	In the normal course of business, the Company and Seacoast National enter into agreements, or are subject to regulatory agreements that result in cash, debt and dividend restrictions. A summary of the most restrictive items follows:
	Seacoast National is required to maintain average reserve balances with the Federal Reserve Bank. The average amount of those reserve balances was $75.4 million for 2013 and $67.5 million for 2012.
	Under Federal Reserve regulation, Seacoast National is limited as to the amount it may loan to their affiliates, including the Company, unless such loans are collateralized by specified obligations. At December 31, 2013, the maximum amount available for transfer from Seacoast National to the Company in the form of loans approximated $34.0 million.
	The approval of the Office of the Comptroller of the Currency (“OCC”) is required if the total of all dividends declared by a national bank in any calendar year exceeds the bank’s profits, as defined, for that year combined with its retained net profits for the preceding two calendar years. Under this restriction Seacoast National can distribute dividends to the Company as of December 31, 2013, without prior approval of the OCC, approximately $60.1 million.

Securities

Securities	12 Months Ended
	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]	'
Securities	'
	Note     D
	Securities
	The amortized cost and fair value of securities available for sale and held for investment at December 31, 2013 and December 31, 2012 are summarized as follows:
		December 31, 2013
		Gross		Gross			Gross			Fair Value
		Amortized		Unrealized			Unrealized
		Cost		Gains			Losses
		(In thousands)
	SECURITIES AVAILABLE FOR SALE
	U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	100	$	0		$	0		$	100
	Mortgage-backed securities of U.S. Government Sponsored Entities		129,468		1,456			(4,189	)		126,735
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		383,392		776			(14,747	)		369,421
	Private mortgage-backed securities		29,800		0			(226	)		29,574
	Private collateralized mortgage obligations		76,520		731			(413	)		76,838
	Collateralized loan obligations		32,592		0			(413	)		32,179
	Obligations of state and political subdivisions		6,586		193			(15	)		6,764
		$	658,458	$	3,156		$	(20,003	)	$	641,611
		31-Dec-12
		Gross		Gross			Gross			Fair Value
		Amortized		Unrealized			Unrealized
		Cost		Gains			Losses
		(In thousands)
	SECURITIES AVAILABLE FOR SALE
	U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	1,700	$	7		$	0		$	1,707
	Mortgage-backed securities of U.S. Government Sponsored Entities		186,404		3,320			(469	)		189,255
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		352,731		2,430			(902	)		354,259
	Private collateralized mortgage obligations		96,258		1,203			(530	)		96,931
	Obligations of state and political subdivisions		847		51			0			898
		$	637,940	$	7,011		$	(1,901	)	$	643,050
	SECURITIES HELD FOR INVESTMENT
	Collateralized mortgage obligations of U.S. Government Sponsored Entities	$	4,687	$	0		$	(92	)	$	4,595
	Private collateralized mortgage obligations		1,278		33			0			1,311
	Obligations of state and political subdivisions		6,353		737			(3	)		7,087
	Other		1,500		49			0			1,549
		$	13,818	$	819		$	(95	)	$	14,542
	Management changed its intent to hold the securities held for investment during the first quarter 2013 and all securities were transferred to securities available for sale to allow more flexibility in managing interest rate risk.
	Proceeds from sales of securities during 2013 were $67,330,000 with gross gains of $792,000 and gross losses of $373,000. Proceeds from sales of securities during 2012 were $256,102,000 with gross gains of $7,833,000 and gross losses of $214,000. Proceeds from sales of securities during 2011 were $52,689,000 with gross gains of $1,239,000 and gross losses of $19,000.
	Securities with a carrying and fair value of $105,655,000 at December 31, 2013, were pledged as collateral for United States Treasury deposits, other public deposits and trust deposits. Securities with a carrying and fair value of $195,200,000 were pledged as collateral for repurchase agreements.
	The amortized cost and fair value of securities at December 31, 2013, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or repay obligations with or without call or prepayment penalties.
		Available for Sale
		Amortized		Fair Value
		Cost
		(In thousands)
	Due in less than one year	$	100	$	100
	Due after one year through five years		817		832
	Due after five years through ten years		8,438		8,349
	Due after ten years		29,923		29,762
			39,278		39,043
	Mortgage-backed securities of U.S. Government Sponsored Entities		129,468		126,735
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		383,392		369,421
	Private mortgage-backed securities		29,800		29,574
	Private collateralized mortgage obligations		76,520		76,838
		$	658,458	$	641,611
	The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flows analyses, using observable market data where available. The tables below indicate the amount of securities with unrealized losses and period of time for which these losses were outstanding at December 31, 2013 and December 31, 2012, respectively.
		December 31, 2013
		Less than 12 months					12 months or longer						Total
		Fair Value		Unrealized			Fair			Unrealized			Fair Value		Unrealized
				Losses			Value			Losses					Losses
		(In thousands)
	Mortgage-backed securities of U.S. Government Sponsored Entities	$	33,425	$	(2,045	)	$	35,043		$	(2,144	)	$	68,468	$	(4,189	)
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		287,312		(12,450	)		45,657			(2,297	)		332,969		(14,747	)
	Private mortgage-backed securities		29,574		(226	)		0			0			29,574		(226	)
	Private collateralized mortgage obligations		47,653		(413	)		0			0			47,653		(413	)
Collateralized loan obligations		32,179		(413	)		0			0			32,179		(413	)
Obligations of state and political subdivisions		502		(14	)		125			(1	)		627		(15	)
Total temporarily impaired securities	$	430,645	$	(15,561	)	$	80,825		$	(4,442	)	$	511,470	$	(20,003	)
	31-Dec-12
	Less than 12 months					12 months or longer						Total
	Fair Value		Unrealized			Fair			Unrealized			Fair Value		Unrealized
			Losses			Value			Losses					Losses
	(In thousands)
Mortgage-backed securities of U.S. Government Sponsored Entities	$	54,289	$	(469	)	$	0		$	0		$	54,289	$	(469	)
Collateralized mortgage obligations of U.S. Government Sponsored Entities		150,057		(901	)		4,593			(93	)		154,650		(994	)
Private collateralized mortgage obligations		29,969		(441	)		9,221			(89	)		39,190		(530	)
Obligations of state and political subdivisions		0		0			125			(3	)		125		(3	)
Total temporarily impaired securities	$	234,315	$	(1,811	)	$	13,939		$	(185	)	$	248,254	$	(1,996	)
At December 31, 2013, approximately $0.6 million of the unrealized losses pertain to private label securities secured by collateral originated in 2005 and prior. Their fair value is $77.2 million and is attributable to a combination of factors, including relative changes in interest rates since the time of purchase and decreased liquidity for these investment securities in general. The collateral underlying these mortgage investments are 30- and 15-year fixed and 10/1 adjustable rate mortgage loans with low loan to values, subordination and historically have had minimal foreclosures and losses. Based on its assessment of these factors, management believes that the unrealized losses on these debt security holdings are a function of changes in investment spreads and interest rate movements and not changes in credit quality. Management expects to recover the entire amortized cost basis of these securities.
At December 31, 2013, the Company also had $18.9 million of unrealized losses on collateralized mortgage obligations and mortgage backed securities of government sponsored entities having a fair value of $401.4 million that were attributable to a combination of factors, including relative changes in interest rates since the time of purchase and decreased liquidity for investment securities in general. The contractual cash flows for these securities are guaranteed by U.S. government agencies and U.S. government-sponsored enterprises. Based on its assessment of these factors , management believes that the unrealized losses on these debt security holdings are a function of changes in investment spreads and interest movements and not changes in credit quality. Management expects to recover the entire amortized cost basis of these securities.
At December 31, 2013, the Company also had $0.4 million of unrealized losses on collateralized loan obligations having a fair value of $32.2 million that were attributable to a combination of factors, including relative changes in interest rates since the time of purchase and decreased liquidity for investment securities in general. Based on its assessment of these factors, management believes that the unrealized losses on these debt security holdings are a function of changes in investment spreads and interest movements and not changes in credit quality. Management expects to recover the entire amortized cost basis of these securities.
As of December 31, 2013, management does not intend to sell securities that are in unrealized loss positions and it is not more likely than not that the Company will be required to sell these securities before recovery of the amortized cost basis. Therefore, management does not consider any investment to be other-than-temporarily impaired at December 31, 2013.
Included in other assets is $12.3 million of Federal Home Loan Bank and Federal Reserve Bank stock stated at par value. At December 31, 2013, the Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of the $12.3 million of cost method investment securities.

Loans

Loans	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Loans	'
	Note     E
	Loans
	Information relating to loans at December 31 is summarized as follows:
			2013		2012
			(In thousands)
	Construction and land development		$	67,450	$	60,736
	Commercial real estate			520,382		486,828
	Residential real estate			592,746		569,331
	Commercial and financial			78,636		61,903
	Consumer			44,713		46,930
	Other			280		353
	NET LOAN BALANCES		$	1,304,207	$	1,226,081
	-1	Net loan balances at December 31, 2013 and 2012 include deferred costs of $2,618,000 and $1,530,000, respectively.
	One of the sources of the Company’s business is loans to directors and executive officers. The aggregate dollar amount of these loans was approximately $4,771,000 and $4,891,000 at December 31, 2013 and 2012, respectively. During 2013 new loans totaling $2,194,000 were made and reductions totaled $2,314,000.
	At December 31, 2013 and 2012 loans pledged as collateral for borrowings totaled $50.0 million.
	Loans are made to individuals, as well as, commercial and tax exempt entities. Specific loan terms vary as to interest rate, repayment, and collateral requirements based on the type of loan requested and the credit worthiness of the prospective borrower.
	Concentrations of Credit All of the Company’s lending activity occurs within the State of Florida, including Orlando in Central Florida and Southeast coastal counties from Brevard County in the north to Palm Beach County in the south, as well as, all of the counties surrounding Lake Okeechobee in the center of the state. The Company’s loan portfolio consists of approximately one half commercial and commercial real estate loans and one half consumer and residential real estate loans.
	The Company’s extension of credit is governed by the Credit Risk Policy which was established to control the quality of the Company’s loans. These policies and procedures are reviewed and approved by the Board of Directors on a regular basis.
	Construction and Land Development Loans The Company defines construction and land development loans as exposures secured by land development and construction (including 1-4 family residential construction), multi-family property, and non-farm nonresidential property where the primary or significant source of repayment is from rental income associated with that property (that is, loans for which 50 percent or more of the source of repayment comes from third party, non-affiliated rental income) or the proceeds of the sale, refinancing, or permanent financing of the property.
	Commercial Real Estate Loans The Company’s goal is to create and maintain a high quality portfolio of commercial real estate loans with customers who meet the quality and relationship profitability objectives of the Company. Commercial real estate loans are subject to underwriting standards and processes similar to commercial and industrial loans. These loans are viewed primarily as cash flow loans and the repayment of these loans is largely dependent on the successful operation of the property. Loan performance may be adversely affected by factors impacting the general economy or conditions specific to the real estate market such as geographic location and/or property type.
	Residential Real Estate Loans The Company selectively adds residential mortgage loans to its portfolio, primarily loans with adjustable rates, home equity mortgages and home equity lines. Substantially all residential originations have been underwritten to conventional loan agency standards, including loans having balances that exceed agency value limitations. The Company has never offered sub-prime, Alt A, Option ARM or any negative amortizing residential loans, programs or products, although we have originated and hold residential mortgage loans from borrowers with original or current FICO credit scores that are less than “prime.”
	Commercial and Financial Loans Commercial credit is extended primarily to small to medium sized professional firms, retail and wholesale operators and light industrial and manufacturing concerns. Such credits typically comprise working capital loans, loans for physical asset expansion, asset acquisition and other business loans. Loans to closely held businesses will generally be guaranteed in full or for a meaningful amount by the businesses’ major owners. Commercial loans are made based primarily on the historical and projected cash flow of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers, however, may not behave as forecasted and collateral securing loans may fluctuate in value due to economic or individual performance factors. Minimum standards and underwriting guidelines have been established for all commercial loan types.
	Consumer Loans The Company originates consumer loans including installment loans, loans for automobiles, boats, and other personal, family and household purposes, and indirect loans through dealers to finance automobiles. For each loan type several factors including debt to income, type of collateral and loan to collateral value, credit history and Company relationship with the borrower is considered during the underwriting process.
	The following tables present the contractual aging of the recorded investment in past due loans by class of loans as of December 31, 2013 and 2012:
	December 31, 2013		Accruing		Accruing		Accruing		Nonaccrual		Current		Total
			30-59		60-89		Greater						Financing
			Days		Days		Than 90						Receivables
			Past Due		Past Due		Days
			(In thousands)
	Construction and land development		$	3	$	0	$	0	$	1,302	$	66,145	$	67,450
	Commercial real estate			684		345		0		5,111		514,242		520,382
	Residential real estate			974		909		160		20,705		569,998		592,746
	Commercial and financial			353		0		0		13		78,270		78,636
	Consumer			33		27		0		541		44,112		44,713
	Other			0		0		0		0		280		280
	Total		$	2,047	$	1,281	$	160	$	27,672	$	1,273,047	$	1,304,207
	December 31, 2012		Accruing		Accruing		Accruing		Nonaccrual		Current		Total
			30-59		60-89		Greater						Financing
			Days		Days		Than 90						Receivables
			Past Due		Past Due		Days
			(In thousands)
	Construction and land development		$	7	$	0	$	0	$	1,342	$	59,387	$	60,736
	Commercial real estate			832		5		0		17,234		468,757		486,828
	Residential real estate			1,179		1,377		1		22,099		544,675		569,331
	Commercial and financial			41		0		0		0		61,862		61,903
	Consumer			109		0		0		280		46,541		46,930
	Other			0		0		0		0		353		353
	Total		$	2,168	$	1,382	$	1	$	40,955	$	1,181,575	$	1,226,081
	Nonaccrual loans and loans past due ninety days or more were $27.8 million and $41.0 million at December 31, 2013 and 2012, respectively. The reduction in interest income associated with loans on nonaccrual status was approximately $1.0 million, $1.9 million, and $1.2 million, for the years ended December 31, 2013, 2012, and 2011, respectively.
	The Company utilizes an internal asset classification system as a means of reporting problem and potential problem loans. Under the Company’s risk rating system, the Company classifies problem and potential problem loans as “Special Mention,” “Substandard,” and “Doubtful” and these loans are monitored on an ongoing basis. Substandard loans include those characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Loans classified as substandard may require a specific allowance, but generally does not exceed 30% of the principal balance. Loans classified as Doubtful, have all the weaknesses inherent in those classified Substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The principal balance of loans classified as doubtful are generally charged off. Loans that do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories, but possess weaknesses that deserve management’s close attention are deemed to be Special Mention. Risk ratings are updated any time the situation warrants.
	Loans not meeting the criteria above are considered to be pass-rated loans and risk grades are recalculated at least annually by the loan relationship manager. The following tables present the risk category of loans by class of loans based on the most recent analysis performed as of December 31, 2013 and 2012:
	December 31, 2013		Construction		Commercial		Residential		Commercial		Consumer		Total
			& Land		Real Estate		Real		and
			Development				Estate		Financial
			(In thousands)
	Pass		$	63,186	$	485,268	$	554,681	$	77,840	$	43,267	$	1,224,242
	Special mention			583		6,810		824		382		300		8,899
	Substandard			0		15,886		1,670		248		453		18,257
	Doubtful			0		0		0		0		0		0
	Nonaccrual			1,302		5,111		20,705		13		541		27,672
	Pass-Troubled debt restructures			1,838		5,584		30		0		0		7,452
	Troubled debt restructures			541		1,723		14,836		153		432		17,685
			$	67,450	$	520,382	$	592,746	$	78,636	$	44,993	$	1,304,207
December 31, 2012		Construction		Commercial		Residential		Commercial		Consumer		Total
		& Land		Real Estate		Real		and
		Development				Estate		Financial
		(In thousands)
Pass		$	54,994	$	414,023	$	527,891	$	61,123	$	45,907	$	1,103,938
Special mention			1,717		12,137		1,686		587		450		16,577
Substandard			0		22,180		36		193		256		22,665
Doubtful			0		0		0		0		0		0
Nonaccrual			1,342		17,234		22,099		0		280		40,955
Pass-Troubled debt restructures			2,103		6,513		0		0		0		8,616
Troubled debt restructures			580		14,741		17,619		0		390		33,330
		$	60,736	$	486,828	$	569,331	$	61,903	$	47,283	$	1,226,081

Impaired_Loans_and_Allowance_f

Impaired Loans and Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Impaired Loans and Allowance for Loan Losses	'
	Note F     Impaired Loans and Allowance for Loan Losses
	During the first, second, third and fourth quarters of 2013, newly identified TDRs totaled $4.4 million, $4.1 million, $1.7 million and $0.5 million, respectively, summing to $10.7 million, of which $3.4 million were accruing commercial real estate loans, $1.4 million were accruing residential real estate mortgage loans, $0.2 million were accruing commercial and financial loans and $0.1 million were accruing consumer loans. Loans modified, but where full collection under the modified terms is doubtful are classified as nonaccrual loans from the date of modification and are therefore excluded from the tables below.
	The Company’s TDR concessions granted generally do not include forgiveness of principal balances. Loan modifications are not reported in calendar years after modification if the loans were modified at an interest rate equal to the yields of new loan originations with comparable risk and the loans are performing based on the terms of the restructuring agreements.
	When a loan is modified as a TDR, there is not a direct, material impact on the loans within the Consolidated Balance Sheet, as principal balances are generally not forgiven. Most loans prior to modification were classified as an impaired loan and the allowance for loan losses is determined in accordance with the Company’s policy as disclosed in Note A.
	The following table presents loans that were modified within the twelve months ending December 31, 2013:
		Number		Pre-			Post-			Specific		Valuation
		of		Modification			Modification			Reserve		Allowance
		Contracts		Outstanding			Outstanding			Recorded		Recorded
				Recorded			Recorded
				Investment			Investment
		(In thousands)
	Construction and land development		1	$	14		$	13		$	0	$	1
	Residential real estate		11		1,422			1,254			0		168
	Commercial real estate		7		3,421			3,059			0		362
	Commercial and financial		2		154			154			0		0
	Consumer		1		92			74			0		18
			22	$	5,103		$	4,554		$	0	$	549
	Accruing loans that were restructured within the twelve months ending December 31, 2013, 2012 and 2011 and defaulted during the twelve months ended December 31, 2013, 2012 and 2011 are presented in the table below. The Company considers a loan to have defaulted when it becomes 60 days or more delinquent under the modified terms, has been transferred to nonaccrual status, or has been transferred to other real estate owned. A defaulted TDR is generally placed on nonaccrual and specific allowance for loan loss is assigned in accordance with the Company’s policy as disclosed in Note A.
		Number of		Recorded
		Contracts		Investment
		(Dollars in thousands)
	December 31, 2013:
	Residential real estate		1	$	328
	Commercial real estate		1		1,620
	December 31, 2012:
	Residential real estate		7	$	913
	December 31, 2011:
	Construction and land development		1	$	37
	Residential real estate		1		220
	Commercial and financial		1		8
	At December 31, 2013 and 2012, the Company’s recorded investment in impaired loans and related valuation allowance was as follows:
		Impaired Loans
		for the Year Ended December 31, 2013
		Recorded		Unpaid			Related			Average		Interest
		Investment		Principal			Valuation			Recorded		Income
				Balance			Allowance			Investment		Recognized
				( In thousands )
	With no related allowance recorded:
	Construction and land development	$	2,561	$	3,180		$	0		$	2,446	$	102
	Commercial real estate		4,481		6,577			0			7,382		28
	Residential real estate		12,366		17,372			0			14,512		81
	Commercial and financial		153		153			0			19		9
	Consumer		425		569			0			162		19
	With an allowance recorded:
	Construction and land development		1,120		1,197			149			1,347		36
	Commercial real estate		7,937		8,046			638			17,264		395
	Residential real estate		23,365		24,766			4,528			22,899		566
	Commercial and financial		13		13			13			1		1
	Consumer		548		573			118			571		23
	Total:
	Construction and land development		3,681		4,377			149			3,793		138
	Commercial real estate		12,418		14,623			638			24,646		423
	Residential real estate		35,731		42,138			4,528			37,411		647
	Commercial and financial		166		166			13			20		10
	Consumer		973		1,142			118			733		42
		$	52,969	$	62,446		$	5,446		$	66,603	$	1,260
		Impaired Loans
		for the Year Ended December 31, 2012
		Recorded		Unpaid			Related			Average		Interest
		Investment		Principal			Valuation			Recorded		Income
				Balance			Allowance			Investment		Recognized
				( In thousands )
	With no related allowance recorded:
Construction and land development	$	1,128	$	1,608		$	0		$	1,399	$	5
Commercial real estate		12,357		14,337			0			12,103		433
Residential real estate		15,463		22,022			0			12,019		455
Commercial and financial		0		0			0			7		0
Consumer		223		255			0			431		12
With an allowance recorded:
Construction and land development		2,897		2,941			230			3,539		127
Commercial real estate		26,130		26,648			2,264			39,527		1,304
Residential real estate		24,256		24,752			4,700			26,795		696
Commercial and financial		0		0			0			34		0
Consumer		447		460			75			585		22
Total:
Construction and land development		4,025		4,549			230			4,938		132
Commercial real estate		38,487		40,985			2,264			51,630		1,737
Residential real estate		39,719		46,774			4,700			38,814		1,151
Commercial and financial		0		0			0			41		0
Consumer		670		715			75			1,016		34
	$	82,901	$	93,023		$	7,269		$	96,439	$	3,054
Impaired loans also include loans that have been modified in troubled debt restructurings where concessions to borrowers who experienced financial difficulties have been granted. At December 31, 2013 and 2012, accruing TDRs totaled $25.1 million and $41.9 million, respectively.
The average recorded investment in impaired loans for the years ended December 31, 2013, 2012 and 2011 was $66,603,000, $96,439,000 and $119,528,000, respectively. The impaired loans were measured or impairment based on the value of underlying collateral for the present value of expected future cash flows discounted at the loan’s effective interest rate. The valuation allowance is included in the allowance for loan losses.
Interest payments received on impaired loans are recorded as interest income unless collection of the remaining recorded investment is doubtful at which time payments received are recorded as reductions to principal. For the years ended December 31, 2013, 2012 and 2011, the Company recorded $1,260,000, $3,054,000 and $3,541,000, respectively, in interest income on impaired loans.
For impaired loans whose impairment is measured based on the present value of expected future cash flows a total of $1.1 million, $1.0 million and $1.1 million, respectively, for 2013, 2012 and 2011 was included in interest income and represents the change in present value attributable to the passage of time.
The nonaccrual loans and accruing loans past due 90 days or more were $27,672,000 and $160,000, respectively, at December 31, 2013, $40,955,000 and $1,000, respectively at the end of 2012, and were $28,526,000 and $0, respectively, at year-end 2011.
Activity in the allowance for loans losses for the three years ended December 31, 2013, 2012 and 2011 are summarized as follows:
	Beginning		Provision			Charge-			Recoveries		Net			Ending
	Balance		for Loan			Offs					Charge-			Balance
			Losses								Offs
	(In thousands)
December 31 , 2013
Construction and land development	$	1,134	$	66		$	(604	)	$	212	$	(392	)	$	808
Commercial real estate		8,849		(522	)		(2,714	)		547		(2,167	)		6,160
Residential real estate		11,090		3,273			(3,153	)		449		(2,704	)		11,659
Commercial and financial		468		(24	)		(60	)		326		266			710
Consumer		563		395			(253	)		26		(227	)		731
	$	22,104	$	3,188		$	(6,784	)	$	1,560	$	(5,224	)	$	20,068
December 31 , 2012
Construction and land development	$	1,883	$	(478	)	$	(612	)	$	341	$	(271	)	$	1,134
Commercial real estate		11,477		3,209			(8,539	)		2,702		(5,837	)		8,849
Residential real estate		10,966		7,767			(8,381	)		738		(7,643	)		11,090
Commercial and financial		402		283			(346	)		129		(217	)		468
Consumer		837		15			(410	)		121		(289	)		563
	$	25,565	$	10,796		$	(18,288	)	$	4,031	$	(14,257	)	$	22,104
December 31, 2011
Construction and land development	$	7,214	$	(1,645	)	$	(4,739	)	$	1,053	$	(3,686	)	$	1,883
Commercial real estate		18,563		(3,777	)		(3,663	)		354		(3,309	)		11,477
Residential real estate		10,102		7,833			(7,482	)		513		(6,969	)		10,966
Commercial and financial		480		(379	)		0			301		301			402
Consumer		1,385		(58	)		(562	)		72		(490	)		837
	$	37,744	$	1,974		$	(16,446	)	$	2,293	$	(14,153	)	$	25,565
As discussed in Note A, “Significant Accounting Policies,” the allowance for loan losses is composed of specific allowances for certain impaired loans and general allowances grouped into loan pools based on similar characteristics. The Company’s loan portfolio and related allowance at December 31, 2013 and 2012 is shown in the following tables.
	Individually Evaluated					Collectively Evaluated for					Total
	for Impairment					Impairment
	Carrying		Associated			Carrying			Associated		Carrying			Associated
	Value		Allowance			Value			Allowance		Value			Allowance
	(In thousands)
December 31, 2013
Construction and land development	$	3,681	$	149		$	63,769		$	659	$	67,450		$	808
Commercial real estate		12,418		638			507,964			5,522		520,382			6,160
Residential real estate		35,731		4,528			557,015			7,131		592,746			11,659
Commercial and financial		166		13			78,470			697		78,636			710
Consumer		973		118			44,020			613		44,993			731
	$	52,969	$	5,446		$	1,251,238		$	14,622	$	1,304,207		$	20,068
	Individually Evaluated					Collectively Evaluated for					Total
	for Impairment					Impairment
	Carrying		Associated			Carrying			Associated		Carrying			Associated
	Value		Allowance			Value			Allowance		Value			Allowance
	(In thousands)
December 31, 2012
Construction and land development	$	4,025	$	230		$	56,711		$	904	$	60,736		$	1,134
Commercial real estate		38,487		2,264			448,341			6,585		486,828			8,849
Residential real estate		39,719		4,700			529,612			6,390		569,331			11,090
Commercial and financial		0		0			61,903			468		61,903			468
Consumer		670		75			46,613			488		47,283			563
	$	82,901	$	7,269		$	1,143,180		$	14,835	$	1,226,081		$	22,104

Bank_Premises_and_Equipment

Bank Premises and Equipment	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Bank Premises and Equipment	'
	Note G    Bank Premises and Equipment
	Bank premises and equipment are summarized as follows:
		Cost		Accumulated			Net
				Depreciation &			Carrying
				Amortization			Value
				(In thousands)
	December 31, 2013
	Premises (including land of $8,978)	$	49,647	$	(20,518	)	$	29,129
	Furniture and equipment		22,138		(16,762	)		5,376
		$	71,785	$	(37,280	)	$	34,505
	December 31, 2012
	Premises (including land of $8,978)	$	48,064	$	(19,051	)	$	29,013
	Furniture and equipment		21,311		(15,859	)		5,452
		$	69,375	$	(34,910	)	$	34,465

Other_Intangible_Assets

Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Other Intangible Assets	'
	Note H     Other Intangible Assets
	The gross carrying amount and accumulated amortization of the Company’s intangible asset subject to amortization at December 31 is presented below.
		2013					2012
		Gross		Accumulated			Gross		Accumulated
		Carrying		Amortization			Carrying		Amortization
		Amount					Amount
		(In thousands)
	Deposit base	$	9,494	$	(8,776	)	$	9,494	$	(7,993	)
		$	9,494	$	(8,776	)	$	9,494	$	(7,993	)
	Intangible amortization expense related to the deposit base intangible for each of the years in the three-year period ended December 31, 2013, is presented below.
		Year Ended December 31
		2013		2012			2011
		(In thousands)
	Intangible Amortization
	Identified intangible assets Deposit base	$	783	$	788		$	847
	The estimated annual amortization expense for the deposit base intangible determined using the straight line method in each of the five years subsequent to December 31, 2013, is as follows (in thousands): 2014, $718; and zero thereafter.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Borrowings	'
	Note I    Borrowings
	All of the Company’s short-term borrowings were comprised of federal funds purchased and securities sold under agreements to repurchase with maturities primarily from overnight to seven days:
		2013			2012			2011
		(In thousands)
	Maximum amount outstanding at any month end	$	165,770		$	149,316		$	154,440
	Weighted average interest rate at end of year		0.17	%		0.21	%		0.22	%
	Average amount outstanding	$	155,222		$	141,592		$	106,495
	Weighted average interest rate during the year		0.18	%		0.24	%		0.26	%
	During 2007, the Company obtained advances from the Federal Home Loan Bank (FHLB) of $25,000,000 each on September 25, 2007 and November 27, 2007. The advances mature on September 15, 2017 and November 27, 2017, respectively, and have fixed rates of 3.64 percent and 2.70 percent at December 31, 2013, respectively, payable quarterly; the FHLB has a perpetual three-month option to convert the interest rate on either advance to an adjustable rate and the Company has the option to prepay the advance should the FHLB convert the interest rate.
	Seacoast National has unused secured lines of credit of $894,106,000 at December 31, 2013.
	The Company issued $20,619,000 in junior subordinated debentures on March 31 and December 16, 2005, an aggregate of $41,238,000. These debentures were issued in conjunction with the formation of a Delaware and Connecticut trust subsidiary, SBCF Capital Trust I, and SBCF Statutory Trust II (“Trusts I and II”) which each completed a private sale of $20.0 million of floating rate preferred securities. On June 29, 2007, the Company issued an additional $12,372,000 in junior subordinated debentures which was issued in conjunction with the formation of a Delaware trust subsidiary, SBCF Statutory Trust III (“Trust III”), which completed a private sale of $12.0 million of floating rate trust preferred securities. The rates on the trust preferred securities are the 3-month LIBOR rate plus 175 basis points, the 3-month LIBOR rate plus 133 basis points, and the 3-month LIBOR rate plus 135 basis points, respectively. The rates, which adjust every three months, are currently 2.00 percent, 1.57 percent, and 1.59 percent, respectively, per annum. The trust preferred securities have original maturities of thirty years, and may be redeemed without penalty on or after June 10, 2010, March 15, 2011, and September 15, 2012, respectively, upon approval of the Federal Reserve or upon occurrence of certain events affecting their tax or regulatory capital treatment. Distributions on the trust preferred securities are payable quarterly in March, June, September and December of each year. The Trusts also issued $619,000, $619,000 and $372,000, respectively, of common equity securities to the Company. The proceeds of the offering of trust preferred securities and common equity securities were used by Trusts I and II to purchase the $41.2 million junior subordinated deferrable interest notes issued by the Company, and by Trust III to purchase the $12.4 million junior subordinated deferrable interest notes issued by the Company, all of which have terms substantially similar to the trust preferred securities.
	The Company has the right to defer payments of interest on the notes at any time or from time to time for a period of up to twenty consecutive quarterly interest payment periods. Under the terms of the notes, in the event that under certain circumstances there is an event of default under the notes or the Company has elected to defer interest on the notes, the Company may not, with certain exceptions, declare or pay any dividends or distributions on its capital stock or purchase or acquire any of its capital stock. As of December 31, 2013, 2012 and 2011, all interest payments on trust preferred securities were current.
	The Company has entered into agreements to guarantee the payments of distributions on the trust preferred securities and payments of redemption of the trust preferred securities. Under these agreements, the Company also agrees, on a subordinated basis, to pay expenses and liabilities of the Trusts other than those arising under the trust preferred securities. The obligations of the Company under the junior subordinated notes, the trust agreement establishing the Trusts, the guarantees and agreements as to expenses and liabilities, in aggregate, constitute a full and conditional guarantee by the Company of the Trusts’ obligations under the trust preferred securities.
	Despite the fact that the accounts of the Trusts are not included in the Company’s consolidated financial statements, $52.0 million in trust preferred securities issued by the Trusts are included in the Tier 1 capital of the Company at December 31, 2013 and 2012, respectively, as allowed by Federal Reserve guidelines.

Employee_Benefits_and_Stock_Co

Employee Benefits and Stock Compensation	12 Months Ended
	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]	'
Employee Benefits and Stock Compensation	'
	Note J     Employee Benefits and Stock Compensation
	The Company’s profit sharing and retirement plan covers substantially all employees after one year of service and includes a matching benefit feature for employees electing to defer the elective portion of their profit sharing compensation. In addition, amounts of compensation contributed by employees are matched on a percentage basis under the plan. The profit sharing and retirement contributions charged to operations were $807,000 in 2013, $771,000 in 2012, and $361,000 in 2011.
	The Company’s stock option and stock appreciation rights plans were approved by the Company’s shareholders on April 25, 1991, April 25, 1996, April 20, 2000, May 8, 2008 and May 23, 2013. The number of shares of common stock that may be granted pursuant to the 1991 and 1996 plans shall not exceed 198,000 shares for each plan, pursuant to the 2000 plan shall not exceed 264,000 shares, pursuant to the 2008 plan shall not exceed 300,000 shares, and pursuant to the 2013 plan shall not exceed 1,300,000 shares. The Company has granted options and stock appreciation rights (“SSARs”) on 166,000, 187,000, 158,000 shares for the 1991, 1996, and 2000 plans, respectively, through December 31, 2013; no options or SSARs have been granted under the 2008 and 49,000 shares have been granted under the 2013 plan. Under the 2008 plan the Company issued 229,000 of restricted stock awards at $7.10 per share during 2011 and 15,000 of restricted stock awards at $8.10 per share during 2012. Under the 2013 plan, the Company issued 195,000 of restricted stock units at $11.00 per share during 2013. The restricted stock units allow the grantee to earn 0-160 percent of the target award as determined by two criteria, the Company’s after-tax earnings and its classified assets ratio. Any restricted stock units meeting performance requirements at December 31, 2015 will vest by one-third on each of the first, second and third anniversaries of the last day of the performance period, December 31, 2016, 2017 and 2018, respectively. If the Company does not achieve the target performance goal for both criteria by December 31, 2015, then non of the restricted stock units will vest and they will be forfeited. Under the plans, the options, stock awards, SSARs restricted stock units exercise price equals the common stock’s market price on the date of the grant. All options or SSARs issued after December 31, 2002 have a vesting period of five years and a contractual life of ten years. All stock awards and restricted stock units have a contractual life of three or five years. To the extent the Company has treasury shares available, stock options exercised or stock grants awarded may be issued from treasury shares or, if treasury shares are insufficient, the Company can issue new shares. The Company has a single share repurchase program in place, approved on September 18, 2001, authorizing the repurchase of up to 165,000 shares; the maximum number of shares that may yet be purchased under this program is 12,000.
	The Company granted stock options totaling 49,000 shares in 2013, but did not grant any stock options or SSARS in 2012 or 2011. Stock option fair value is measured on the date of grant using the Black-Scholes option pricing model with market assumptions. Option pricing models require the use of highly subjective assumptions, including expected price volatility, which when changed can materially affect fair value estimates. Accordingly, the model does not necessarily provide a reliable single measure of the fair value of the Company’s stock options or SSARs. The more significant assumptions used in estimating the fair value of stock options granted in 2013 include: risk-free interest rate of 2.5 percent; no dividends; weighted average expected life of 5 years; and volatility of the Company’s common stock of 26.5 percent. Additionally, the estimated fair value of stock options is reduced, by an estimate of forfeiture experience of 22 percent.
	The following table presents a summary of stock option and SSARs activity for the years ended December 31, 2013, 2012 and 2011:
		Number			Option or			Weighted		Aggregate
		of			SSAR Exercise			Average		Intrinsic
		Shares			Price			Exercise		Value
					Per Share			Price
	Dec. 31, 2010		109,000			$85.40 –136.80		$	106.05	$	0
	Granted		0			0			0
	Exercised		0			0			0
	Expired		0			0			0
	Cancelled		(2,000	)		85.40 –136.80			100.7
	Dec. 31, 2011		107,000			85.40 –136.80			107.1		0
	Granted		0			0			0
	Exercised		0			0			0
	Expired		0			0			0
	Cancelled		(20,000	)		85.40 –133.60			113.3
	Dec. 31, 2012		87,000			85.40 –136.80			105.6		0
	Granted		49,000			11			11
	Exercised		0			0			0
	Expired		(28,000	)		85.4			85.4
	Cancelled		(6,000	)		111.10 –136.80			113.57
	Dec. 31, 2013		102,000			11.00 – 133.60			65.1		0
	No stock options were exercised during 2013. No windfall tax benefits were realized from the exercise of stock options and no cash was utilized to settle equity instruments granted under stock option awards.
	The following table summarizes information about stock options outstanding and exercisable at December 31, 2013:
	Options / SSARs Outstanding			Options / SSARs Exercisable (Vested)
	Number of	Weighted Average		Number of	Weighted		Weighted Average	Aggregate
	Shares	Remaining		Shares	Average		Remaining	Intrinsic
	Outstanding	Contractual Life		Exercisable	Exercise		Contractual Life	Value
		in Years			Price		in Years
	102,000	5.91		53,000	$115.48		2.58	$0
	At December 31, 2013, all stock options and SSARs were fully vested with no remaining unrecognized compensation cost, except for stock options issued during 2013. Adjusting for potential forfeiture experience, non-vested stock options for 49,000 shares were outstanding at December 31, 2013, and are as follows:
	Number of	Weighted Average		Weighted	Remaining		Weighted Average
	Non-Vested	Remaining Contractual		Average	Unrecognized		Remaining Recognition
	Stock Options	Life in Years		Fair Value	Compensation Cost		Period in Years
	49,000	9.5		$3.10	$107,000		4.5
	Since December 31, 2012, restricted stock awards of 9,000 shares were issued, 15,000 awards have vested and 6,000 awards were cancelled. Non-vested restricted stock awards totaling 168,000 shares were outstanding at December 31, 2013, 12,000 less than at December 31, 2012, and are as follows:
	Number of	Remaining		Weighted Average
	Non-Vested	Unrecognized		Remaining Recognition
	Restricted Stock	Compensation Cost		Period in Years
	Award Shares
	168,000	$559,000		2.64
	During 2013, restricted stock units totaling 195,000 were issued, of which none were vested and 18,000 units were cancelled. Non-vested restricted units totaling 177,000 were outstanding at December 31, 2013, and are as follows:
	Number of	Remaining		Weighted Average
	Non-Vested	Unrecognized		Remaining Recognition
	Restricted Stock	Compensation Cost		Period in Years
	Units
	177,000	$1,520,000		5
	In 2013, 2012 and 2011 the Company recognized $246,000 ($151,000 after tax), $796,000 ($489,000 after tax) and $588,000 ($361,000 after tax), respectively of non-cash compensation expense.
	No cash was utilized to settle equity instruments granted under restricted stock awards. No compensation cost has been capitalized and no significant modifications have occurred with regard to the contractual terms for stock options, SSARs or restricted stock awards.

Lease_Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Lease Commitments	'
	Note K     Lease Commitments
	The Company is obligated under various noncancellable operating leases for buildings, and land. Minimum rent payments under operating leases are recognized on a straight-line basis over the term of the lease. At December 31, 2013, future minimum lease payments under leases with initial or remaining terms in excess of one year are as follows:
		(In thousands)
	2014	$	3,304
	2015		2,657
	2016		2,552
	2017		2,320
	2018		1,032
	Thereafter		11,332
		$	23,197
	Rent expense charged to operations was $3,878,000 for 2013, $3,881,000 for 2012, and $4,010,000 for 2011. Certain leases contain provisions for renewal and change with the consumer price index.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Note L     Income Taxes
	The benefit for income taxes is as follows:
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Current
	Federal	$	160		$	0		$	0
	State		7			7			10
	Deferred
	Federal		(30,540	)		0			0
	State		(10,012	)		(7	)		(10	)
		$	(40,385	)	$	0		$	0
	The difference between the total expected tax benefit (computed by applying the U.S. Federal tax rate of 35% to pretax income in 2013, 2012 and 2011) and the reported income tax benefit relating to loss before income taxes is as follows:
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Tax rate applied to income (loss) before income taxes	$	4,061		$	(249	)	$	2,333
	Increase (decrease) resulting from the effects of:
	Tax exempt interest on obligations of states and political subdivisions		(148	)		(118	)		(143	)
	State income taxes		(259	)		(27	)		(173	)
	Stock compensation		4			28			132
	Expiration of capital loss carryforward		0			354			0
	Other		38			53			281
	Federal tax provision before valuation allowance		3,696			41			2,430
	State tax provision before valuation allowance		740			76			494
	Total income tax provision		4,436			117			2,924
	Change in valuation allowance		(44,821	)		(117	)		(2,924	)
	Income tax provision (benefit)	$	(40,385	)	$	0		$	0
	The net deferred tax assets (liabilities) are comprised of the following:
		December 31
		2013			2012
		(In thousands)
	Allowance for loan losses	$	8,139		$	8,964
	Other real estate owned		899			1,521
	Capital losses		0			26
	Accrued stock compensation		528			492
	Federal tax loss carryforward		42,776			44,755
	State tax loss carryforward		7,925			8,202
	Alternative minimum tax carryforward		1,304			1,304
	Net unrealized securities losses		6,503			0
	Deferred compensation		1,169			1,162
	Other		273			990
	Gross deferred tax assets		69,516			67,416
	Less: Valuation allowance		0			(44,821	)
	Deferred tax assets net of valuation allowance		69,516			22,595
	Depreciation		(1,365	)		(1,514	)
	Deposit base intangible		(233	)		(538	)
	Net unrealized securities gains		0			(1,972	)
	Accrued interest and fee income		(1,060	)		(620	)
	Gross deferred tax liabilities		(2,658	)		(4,644	)
	Net deferred tax assets	$	66,858		$	17,951
	At December 31, 2013, the Company’s deferred tax assets of $66.9 million consists of approximately $52.6 million of net U.S. federal deferred tas assets and $14.3 million of net state deferred tax assets.
	Management assesses the valuation allowance recorded against deferred tax assets at each reporting period. The determination of whether a valuation allowance for net deferred tax assets is appropriate is subject to considerable judgment and requires an evaluation of all the positive and negative evidence. During 2008, the Company established a valuation allowance for its net deferred tax assets, primarily due to the realization of significant losses, significant credit deterioration, negative trending in asset quality and uncertainty regarding the amount of future taxable income that the Company could forecast. At December 31, 2012, based on the assessment of all the positive and negative evidence, management concluded that there was not sufficient evidence to conclude that it was more likely than not that the Company would realize the benefits associated with its net deferred tax assets; accordingly, the Company continued to maintain a valuation allowance of $44.8 million for the net deferred tax assets.
	At September 30, 2013, the Company is no longer in a three-year cumulative loss position, which represented significant negative evidence. Therefore, based on the assessment of all the positive and other negative evidence, management concluded that it was more likely than not that its net deferred tax assets of $66.9 million will be realized based upon future taxable income, and therefore reversed the valuation allowance.
	The deferred tax asset valuation allowance was reversed after the achievement of operating results for the third quarter and nine months of 2013 which demonstrated the continuation of increasing income before taxes results marking the fifth consecutive quarter of profitable operating results. This supports a steady state annual income before taxes of $13 to $16 million. The fourth quarter of 2013 results also provided further validation of the positive credit quality trending improvements marking the sixteenth consecutive quarter of such improvements. At December 31, 2013, the classified asset ratio as a percentage of Tier 1 Capital and the allowance for loan losses improved to 23.0 percent compared to 54.1 percent at December 31, 2008.
	In addition, the achievement of operating results for the third and fourth quarters and full year of 2013 consistent with management’s forecast for these periods, provided further evidence of the Company’s ability to produce reliable forecasts, and strengthened the weight of the positive evidence provided by forecasted future taxable income. The Company’s forecast of taxable income at December 31, 2013 demonstrates that there will be sufficient future taxable income to realize the $66.9 million net deferred tax asset at December 31, 2013. The positive evidence related to the forecasted future taxable income assists in overcoming the weight of the negative evidence related to the significant operating losses recognized as a result of the recent financial crisis and adds to the overall weight of positive evidence that the December 31, 2013 deferred tax asset is more likely than not realizable. Prior to the third quarter of 2013, the Company was unable to conclude that there was sufficient evidence to support that the deferred tax asset was more likely than not realizable and to support the reversal of the deferred tax asset valuation allowance.
	The positive evidence at December 31, 2013 included: (1) the Company’s significantly improved credit risk profile, (2) continued improving trends in credit quality, (3) continued profitability in recent quarters, (4) policy enhancements which reduce exposure to credit risk through concentration limits by loan type, exposure limits to single borrowers, among others, (5) record of long-term positive earnings prior to the recent economic downturn, (6) strong capital position, as well as, (7) sufficient amounts of estimated future taxable income, of the appropriate character, to support the realization of the Company’s net deferred tax asset at September 30, 2013. Management’s confidence in the realization of projected future taxable income is based on an analysis of the Company’s risk profile and recent trends in financial performance, including credit quality trends. In determining whether management’s projections of future taxable income are reliable, management considered objective evidence supporting the forecast assumptions as well as recent experience which demonstrates the Company’s ability to reasonably project future results of operations. The analysis showed that credit losses will be at pre-crisis levels and will continue to trend downward, and that credit quality indicators will continue to improve. Further, while the banking environment is expected to remain challenging due to economic and other uncertainties, the Company believes that it can confidently forecast future taxable income at sufficient levels over the future period of time that the Company has available to realize its net deferred tax asset, which is discussed further below.
	Management expects to realize the $66.9 million in net deferred tax assets well in advance of the statutory carryforward period. At December 31, 2013, approximately $14.9 million of existing deferred tax assets are not related to net operating losses or credits and therefore, have no expiration date. Approximately $42.8 million of the remaining deferred tax assets relate to federal net operating losses which will expire in annual installments beginning in 2029 through 2032. Additionally, approximately $7.9 million of the deferred tax assets relate to state net operating losses which will expire in annual installments beginning in 2027 through 2032. Tax credit carryforwards at December 31, 2013 include federal alternative minimum tax credits totaling $1.3 million which have an unlimited carryforward period.
	A valuation allowance could be required in future periods based on the assessment of the positive and negative evidence. Management’s conclusion at December 31, 2013 that it is more likely than not that the net deferred tax assets of $66.9 million will be realized is based upon management’s estimate of future taxable income. Management’s estimate of future taxable income is based on internal projections which consider historical performance, various internal estimates and assumptions, as well as certain external data all of which management believes to be reasonable although inherently subject to significant judgment. If actual results differ significantly from the current estimates of future taxable income, even if caused by adverse macro-economic conditions, a valuation allowance may need to be recorded for some or all of the Company’s deferred tax asset. Such an increase to the deferred tax asset valuation allowance could have a material adverse effect on the Company’s financial condition and results of operations.
	The Company recognizes interest and penalties, as appropriate, as part of the provisioning for income taxes. No interest or penalties were accrued at December 31, 2013.
	The Company has no unrecognized income tax benefits or provisions due to uncertain income tax positions. The Internal Revenue Service (IRS) examined the federal income tax returns for the years 2006, 2007, 2008 and 2009. The IRS did not propose any adjustments related to this examination. The following are the major tax jurisdictions in which the Company operates and the earliest tax year subject to examination:
	Jurisdiction	Tax Year
	United States of America		2010
Florida		2008
Income taxes related to securities transactions were $162,000, $2,939,000 and $471,000 in 2013, 2012 and 2011, respectively.

Noninterest_Income_and_Expense

Noninterest Income and Expenses	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Noninterest Income and Expenses	'
	Note M    Noninterest Income and Expenses
	Details of noninterest income and expense follow:
		Year Ended December 31
		2013		2012			2011
		(In thousands)
	Noninterest income
	Service charges on deposit accounts	$	6,711	$	6,245		$	6,262
	Trust fees		2,711		2,279			2,111
	Mortgage banking fees		4,173		3,710			2,140
	Brokerage commissions and fees		1,631		1,071			1,122
	Marine finance fees		1,189		1,111			1,209
	Interchange income		5,404		4,501			3,808
	Other deposit based EFT fees		342		336			318
	Other		2,158		2,191			1,375
			24,319		21,444			18,345
	Loss on sale of commercial loan		0		(1,238	)		0
	Securities gains, net		419		7,619			1,220
	TOTAL	$	24,738	$	27,825		$	19,565
	Noninterest expense
	Salaries and wages	$	31,006	$	29,935		$	27,288
	Employee benefits		7,327		7,710			5,875
	Outsourced data processing costs		6,372		7,382			6,583
	Telephone / data lines		1,253		1,178			1,179
	Occupancy		7,178		8,146			7,627
	Furniture and equipment		2,334		2,319			2,291
	Marketing		2,339		3,095			2,917
	Legal and professional fees		2,458		5,241			6,137
	FDIC assessments		2,601		2,805			3,013
	Amortization of intangibles		783		788			847
	Asset dispositions expense		740		1,459			2,281
	Net loss on other real estate owned and repossessed assets		1,289		3,467			3,751
	Other		9,472		9,023			7,974
	TOTAL	$	75,152	$	82,548		$	77,763

Shareholders_Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Shareholders' Equity	'
	Note N     Shareholders’ Equity
	A 1 for 5 reverse stock split was effective as of December 13, 2013. Each five shares of the Company’s common stock was automatically converted to one share of the Company’s common stock. Any fractional post-split shares as a result of the reverse split were rounded up to the nearest whole post-split share. Shareholders of the Company previously authorized the Board of Directors to approve a reverse stock split at the annual meeting in May 2013. All share amounts have been restated for all years presented.
	The Company has reserved 300,000 common shares for issuance in connection with an employee stock purchase plan and 148,500 common shares for issuance in connection with an employee profit sharing plan. At December 31, 2013, an aggregate of 170,066 shares and 34,590 shares, respectively, have been issued as a result of employee participation in these plans.
	In December 2008, in connection with the Troubled Asset Relief Program (TARP) Capital Purchase Program, established as part of the Emergency Economic Stabilization Act of 2008, the Company issued to the U.S. Treasury Department (U.S. Treasury) 2,000 shares of Fixed Rate Cumulative Perpetual Preferred Stock, Series A (“Series A Preferred Stock”) with a par value of $0.10 per share and a 10-year warrant to purchase approximately 117,925 shares of common stock at an exercise price of $31.80 per share. The proceeds received were allocated to the preferred stock and additional paid-in-capital based on their relative fair values. The Series A Preferred Stock initially paid quarterly dividends at a five percent annual rate that increased to nine percent after five years on a liquidation preference of $25,000 per share. Upon the request of the U.S. Treasury, at any time, the Company agreed to enter into a deposit arrangement pursuant to which the Series A Preferred Stock may be deposited and depository shares may be issued. The Corporation registered the Series A Preferred Stock, the warrant, the shares of common stock underlying the warrant and the depository shares, if any, for resale under the Securities Act of 1933. On March 28, 2012, the U.S. Treasury publicly offered through an auction process their investment in the Series A Preferred Stock. The auction concluded on April 3, 2012, thereby transferring all of the U.S. Treasury’s ownership in the Series A Preferred Stock to third party investors. The warrant to purchase shares of common stock was acquired by the Company on May 30, 2012 for $81,000, including related expenses. On December 31, 2013, the full amount of the Series A Preferred Stock was redeemed at par for $50 million plus accrued dividends through the date of redemption of $319,000 .
	A common stock offering was completed during November 2013 adding $75 million to capital, with approximately $47 million (net of issuance costs) received during November 2013, and $25 million received in January 2014 from a single investor that was required to obtain approval of the Federal Reserve Bank for its investment. Of the funds received, $50 million was utilized to redeem the Series A Preferred Stock at December 31, 2013, with the remainder available for future growth and general corporate purposes.
	Holders of common stock are entitled to one vote per share on all matters presented to shareholders as provided in the Company’s Articles of Incorporation. The Company implemented a dividend reinvestment plan during 2007, issuing no shares from treasury stock during 2013 and 2012.
	The Company was subject to certain standards for executive compensation while its preferred shares were owned by the U.S. Treasury that included (a) prohibiting “golden parachute” payments as defined in the Emergency Economic Stabilization Act of 2008 (EESA) to senior executive officers; (b) requiring recovery of any compensation paid to senior executive officers based on criteria that is later proven to be materially inaccurate; (c) prohibiting incentive compensation that encourages unnecessary and excessive risks that threaten the value of the financial institution, and (d) accepting restrictions on the payment of dividends and the repurchase of common stock. Seacoast believes it complied with all TARP standards and restrictions during the time the Company was a participant.
	Required Regulatory Capital
							Minimum for Capital					Minimum To Be Well
							Adequacy Purpose					Capitalized Under
												Prompt Corrective
												Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(Dollars in thousands)
	SEACOAST BANKING CORP
	(CONSOLIDATED)
	At December 31, 2013:
	Total Capital (to risk-weighted assets)	$	227,310		16.88	%	$	107,757		>8.00	%		N/A		N/A
	Tier 1 Capital (to risk-weighted assets)		210,433		15.62			53,878		>4.00	%		N/A		N/A
	Tier 1 Capital (to adjusted average assets)		210,433		9.59			92,234		>4.00	%		N/A		N/A
	At December 31, 2012:
	Total Capital (to risk-weighted assets)	$	227,428		18.33	%	$	99,247		>8.00	%		N/A		N/A
	Tier 1 Capital (to risk-weighted assets)		211,839		17.08			49,624		>4.00	%		N/A		N/A
	Tier 1 Capital (to adjusted average assets)		211,839		10.04			84,377		>4.00	%		N/A		N/A
	SEACOAST NATIONAL BANK
	(A WHOLLY OWNED BANK SUBSIDIARY)
	At December 31, 2013:
	Total Capital (to risk-weighted assets)	$	225,102		16.74	%	$	107,571		>8.00	%	$	134,463		>10.00	%
	Tier 1 Capital (to risk-weighted assets)		208,253		15.49			53,785		>4.00	%		80,678		>  6.00	%
	Tier 1 Capital (to adjusted average assets)		208,253		9.51			87,636		>4.00	%		109,545		>  5.00	%
	At December 31, 2012:
	Total Capital (to risk-weighted assets)	$	220,433		17.79	%	$	99,116		>8.00	%	$	123,895		>10.00	%
	Tier 1 Capital (to risk-weighted assets)		204,864		16.54			49,558		>4.00	%		74,337		>  6.00	%
	Tier 1 Capital (to adjusted average assets)		204,864		9.72			84,312		>4.00	%		105,389		>  5.00	%
	N/A—Not Applicable
	The Company is subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the Company’s 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 assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
	Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier 1 capital to average assets (as defined). Management believes, as of December 31, 2013, that the Company meets all capital adequacy requirements to which it is subject.
	The Company is well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Company must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth above. At December 31, 2013, the Company’s deposit-taking bank subsidiary met the capital and leverage ratio requirements for well capitalized banks.

Parent_Company_Only_Financial_

Parent Company Only Financial Information	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]	'
Parent Company Only Financial Information	'
	Note     O
	Seacoast Banking Corporation of Florida
	(Parent Company Only) Financial Information
	Balance Sheets
		December 31
		2013			2012
		(In thousands)
	ASSETS
	Cash	$	919		$	4,067
	Securities purchased under agreement to resell with subsidiary bank, maturing within 30 days		792			2,922
	Investment in subsidiaries		250,033			212,182
	Other assets		493			13
		$	252,237		$	219,184
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Subordinated debt	$	53,610		$	53,610
	Other liabilities		23			28
	Shareholders’ equity		198,604			165,546
		$	252,237		$	219,184
	Statements of Income (Loss)
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Income
	Dividends from subsidiary Bank	$	0		$	0		$	0
	Interest/other		28			29			79
			28			29			79
	Interest expense		958			1,057			1,152
	Other expenses		450			575			405
	Loss before income tax benefit and equity in undistributed income of subsidiaries		(1,380	)		(1,603	)		(1,478	)
	Income tax benefit		(2,281	)		0			0
	Income (loss) before equity in undistributed income of subsidiaries		901			(1,603	)		(1,478	)
	Equity in undistributed income of subsidiaries		51,088			893			8,145
	Net income (loss)	$	51,989		$	(710	)	$	6,667
	Statement of Cash Flows
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Cash flows from operating activities
	Interest received	$	5		$	7		$	9
	Interest paid		(957	)		(1,045	)		(3,288	)
	Dividends received		23			22			70
	Income taxes received (paid)		1,797			(32	)		(67	)
	Other		(494	)		(703	)		(420	)
	Net cash provided by (used in) operating activities		374			(1,751	)		(3,696	)
	Cash flows from investing activities
	Decrease in securities purchased under agreement to resell, maturing within 30 days, net		2,130			422			285
	Net cash provided by investment activities		2,130			422			285
	Cash flows from financing activities
	Issuance of common stock, net of related expense		46,977			0			0
	Repurchase of stock warrants, including related expense		0			(81	)		0
	Stock based employment plans		190			196			123
	Redemption of preferred stock		(50,000	)		0			0
	Dividends paid on preferred shares		(2,819	)		(2,500	)		(6,875	)
	Net cash used in financing activities		(5,652	)		(2,385	)		(6,752	)
	Net change in cash		(3,148	)		(3,714	)		(10,163	)
	Cash at beginning of year		4,067			7,781			17,944
	Cash at end of year	$	919		$	4,067		$	7,781
	RECONCILIATION OF INCOME (LOSS) TO CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES
	Net income (loss)	$	51,989		$	(710	)	$	6,667
	Adjustments to reconcile net income (loss) to net cash used in operating activities: Equity in undistributed income of subsidiaries		(51,088	)		(893	)		(8,145	)
	Other, net		(527	)		(148	)		(2,218	)
	Net cash provided by (used in) operating activities	$	374		$	(1,751	)	$	(3,696	)

Contingent_Liabilities_and_Com

Contingent Liabilities and Commitments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Contingent Liabilities and Commitments with Off-Balance Sheet Risk	'
	Note     P
	Contingent Liabilities and Commitments with Off-Balance Sheet Risk
	The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, or operating results or cash flows.
	The Company’s subsidiary bank 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, standby letters of credit, and limited partner equity commitments.
	The subsidiary bank’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 contract or notional amount of those instruments. The subsidiary bank uses the same credit policies in making commitments and standby letters of credit as they do for on balance sheet instruments.
	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. The subsidiary bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the bank upon extension of credit, is based on management’s credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, equipment, and commercial and residential real estate. Of the $135,056,000 in commitments to extend credit outstanding at December 31, 2013, $77,565,000 is secured by 1-4 family residential properties for individuals with approximately $9,454,000 at fixed interest rates ranging from 3.50 to 5.875%.
	Standby letters of credit are conditional commitments issued by the subsidiary bank to guarantee the performance of a customer to a third party. These instruments have fixed termination dates and most end without being drawn; therefore, they do not represent a significant liquidity risk. Those guarantees are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing, and similar transactions. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The subsidiary bank holds collateral supporting these commitments for which collateral is deemed necessary. The extent of collateral held for secured standby letters of credit at December 31, 2013 and 2012 amounted to $3,187,000 and $3,629,000 respectively.
	Unfunded limited partner equity commitments at December 31, 2013 totaled $3,746,000 that the Company has committed to a small business investment company under the SBIC Act to be used to provide capital to small businesses.
		December 31
		2013		2012
		(In thousands)
	Contract or Notional Amount Financial instruments whose contract amounts represent credit risk:
	Commitments to extend credit	$	135,056	$	118,887
	Standby letters of credit and financial guarantees written:
	Secured		2,722		2,509
	Unsecured		8		8
	Unfunded limited partner equity commitment		3,746		4,000
	The Company’s subsidiary bank renewed its contract for outsourced data services on December 31, 2012 for a period of five years and six months which requires a minimum payment for early termination without cause as follows:
	Year Ended	(In thousands)
	2013	$	11,016
	2014		8,568
	2015		6,120
	2016		3,672

Supplemental_Disclosures_for_C

Supplemental Disclosures for Consolidated Statements of Cash Flows	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]	'
Supplemental Disclosures for Consolidated Statements of Cash Flows	'
	Note Q    Supplemental Disclosures for Consolidated Statements of Cash Flows
	Reconciliation of Net Income (Loss) to Net Cash Provided by Operating Activities for the three years ended:
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Net income (loss)	$	51,989		$	(710	)	$	6,667
	Adjustments to reconcile net income (loss) to net cash (used) provided by operating activities
	Depreciation		2,776			2,827			2,830
	Net amortization of premiums and discounts on securities		3,882			4,740			2,555
	Other amortization and accretion		(172	)		20			(35	)
	Change in loans available for sale, net		22,189			(20,143	)		5,724
	Provision for loan losses, net		3,188			10,796			1,974
	Deferred tax benefit		(40,552	)		(7	)		(10	)
	Gain on sale of securities		(419	)		(7,619	)		(1,220	)
	Gain on sale of loans		(455	)		(816	)		(143	)
	Loss on sale or write down of foreclosed assets		1,295			3,548			3,812
	Writedown on loan available for sale		0			1,238			0
	Loss on disposition of equipment		1			774			58
	Stock based employee benefit expense		246			796			587
	Change in interest receivable		160			861			(561	)
	Change in interest payable		(27	)		(524	)		(2,258	)
	Change in prepaid expenses		4,562			2,601			2,748
	Change in accrued taxes		(102	)		(190	)		(145	)
	Change in other assets		792			(835	)		585
	Change in other liabilities		499			581			573
	Net cash provided (used) by operating activities	$	49,852		$	(2,062	)	$	23,741
	Supplemental disclosure of non cash investing activities
	Fair value adjustment to securities	$	(21,957	)	$	(3,405	)	$	5,530
	Transfers from loans to other real estate owned		5,087			14,067			35,500
	Transfers from loans to loans available for sale		379			10,321			0
	Matured securities recorded as a receivable		0			3,100			3,630
	Securities principal receivable recorded in other assets		159			0			0
	Transfer from securities held for investment to available for sale		13,818			0			0

Fair_Value

Fair Value	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value	'
	Note     R
	Fair Value
	Fair Value Instruments Measured at Fair Value
	In certain circumstances, fair value enables the Company to more accurately align its financial performance with the market value of actively traded or hedged assets and liabilities. Fair values enable a company to mitigate the non-economic earnings volatility caused from financial assets and financial liabilities being carried at different bases of accounting, as well as to more accurately portray the active and dynamic management of a company’s balance sheet. ASC 820 provides additional guidance for estimating fair value when the volume and level of activity for an asset or liability has significantly decreased. In addition, it includes guidance on identifying circumstances that indicate a transaction is not orderly. Under ASC 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at December 31, 2013 and 2012 included:
	(Dollars in thousands)		Fair Value		Quoted Prices in		Significant  Other		Significant Other
			Measurements		Active Markets for		Observable		Unobservable
			December 31, 2013		Identical Assets		Inputs		Inputs
					Level 1		Level 2		Level 3
	Available for sale securities (3)		$	641,611	$	100	$	641,511	$	0
	Loans available for sale (4)			13,832		0		13,832		0
	Loans (1)			17,323		0		10,325		6,998
	OREO (2)			6,860		0		1,301		5,559
	(Dollars in thousands)		Fair Value		Quoted Prices in		Significant  Other		Significant  Other
			Measurements		Active Markets for		Observable		Unobservable
			December 31, 2012		Identical Assets		Inputs		Inputs
					Level 1		Level 2		Level 3
	Available for sale securities (3)		$	643,050	$	1,707	$	641,343	$	0
	Loans available for sale (4)			36,021		0		36,021		0
	Loans (1)			24,510		0		12,778		11,732
	OREO (2)			11,887		0		3,457		8,430
	-1	See Note E. Nonrecurring fair value adjustments to loans identified as impaired reflect full or partial write-downs that are based on the loan’s observable market price or current appraised value of the collateral in accordance with ASC 310.
	-2	Fair value is measured on a nonrecurring basis in accordance with ASC 360.
	-3	See Note D for further detail of recurring fair value basis of individual investment categories.
	-4	Recurring fair value basis determined using observable market data.
	The fair value of impaired loans which are not troubled debt restructurings is based on recent real estate appraisals less estimated costs of sale. For residential real estate impaired loans, appraised values or internal evaluation are based on the comparative sales approach. These impaired loans are considered level 2 in the fair value hierarchy. For commercial and commercial real estate impaired loans, evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost and/or income approach. A significant unobservable input in the income approach is the estimated capitalization rate for a given piece of collateral. At December 31, 2013 the range of capitalization rates utilized to determine fair value of the underlying collateral averaged approximately 8.5%. Adjustments to comparable sales may be made by an appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of an asset over time. As such, the fair value of these impaired loans is considered level 3 in the fair value hierarchy.
	Fair value of available for sale securities are determined using valuation techniques for individual investments as described in Note A.
	When appraisals are used to determine fair value and the appraisals are based on a market approach, the fair value of OREO is classified as level 2. When the fair value of OREO is based on appraisals which require significant adjustments to market-based valuation inputs or apply an income approach based on unobservable cash flows, the fair value of OREO is classified as Level 3.
	Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company’s monthly and/or quarter valuation process.
	During 2013, there were no transfers between level 1 and level 2 assets carried at fair value.
	For loans classified as level 3 the transfers in totaled $2.2 million consisting of loans that became impaired during 2013. Transfers out consisted of charge offs of $1.3 million, and loan foreclosures migrating to OREO and other reductions (including principal payments) totaling $5.6 million. No sales were recorded.
	Charge-offs recognized upon loan foreclosures are generally offset by general or specific allocations of the allowance for loan losses and generally do not, and did not during the reported periods, significantly impact the Company’s provision for loan losses.
	For OREO classified as level 3 during 2013 transfers out totaled $5.0 million consisting of valuation write-downs of $0.5 million and sales of $4.5 million, and transfers in consisted of foreclosed loans totaling $2.2 million.
	The carrying amount and fair value of the Company’s other significant financial instruments that are not measured at fair value on a recurring basis in the balance sheet as of December 31 is as follows:
			Carrying Amount		Quoted Prices in		Significant  Other		Significant Other
			December 31, 2013		Active Markets for		observable		Unobservable Inputs
					Identical Assets		Inputs		Level 3
					Level 1		Level 2
	(In Thousands)
	Financial Assets
	Securities held to maturity		$	0	$	0	$	0	$	0
	Loans, net			1,266,816		0		0		1,272,893
	Financial Liabilities
	Deposits			1,806,045		0		0		1,807,183
	Borrowings			50,000		0		53,856		0
	Subordinated debt			53,610		0		42,888		0
			Carrying Amount		Quoted Prices in		Significant Other		Significant Other
			31-Dec-12		Active Markets for		Observable		Unobservable Inputs
					Identical Assets		Inputs		Level 3
					Level 1		Level 2
	(In Thousands)
	Financial Assets
	Securities held to maturity		$	13,818	$	0	$	14,542	$	0
	Loans, net			1,179,467		0		0		1,201,178
	Financial Liabilities
	Deposits			1,758,961		0		0		1,761,119
	Borrowings			50,000		0		55,604		0
	Subordinated debt			53,610		0		37,527		0
	The short maturity of Seacoast’s assets and liabilities results in having a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and cash equivalents, interest bearing deposits with other banks, federal funds purchased and securities sold under agreement to repurchase, maturing within 30 days.
	The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at December 31, 2013 and 2012:
	Securities: U.S. Treasury securities are reported at fair value utilizing Level 1 inputs. Other securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things.
	The Company reviews the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, the Company does not purchase investment portfolio securities that are esoteric or that have a complicated structure. The Company’s entire portfolio consists of traditional investments, nearly all of which are U.S. Treasury obligations, federal agency bullet or mortgage pass-through securities, or general obligation or revenue based municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from third-party sources or derived using internal models.
	Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial, mortgage, etc. Each loan category is further segmented into fixed and adjustable rate interest terms and by performing and nonperforming categories. The fair value of loans, except residential mortgages, is calculated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect the credit and interest rate risks inherent in the loan. For residential mortgage loans, fair value is estimated by discounting contractual cash flows adjusting for prepayment assumptions using discount rates based on secondary market sources. The estimated fair value is not an exit price fair value under ASC 820 when this valuation technique is used.
	Loans held for sale: Fair values are based upon estimated values to be received from independent third party purchasers.
Deposit Liabilities: The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.
Borrowings: The fair value of floating rate borrowings is the amount payable on demand at the reporting date. The fair value of fixed rate borrowings is estimated using the rates currently offered for borrowings of similar remaining maturities.
Subordinated debt: The fair value of the floating rate subordinated debt is estimated using discounted cash flow analysis, estimates of the Company’s current incremental borrowing rate for similar instruments and dealer quotes for similar debt.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Note S    Earnings Per Share
	Basic earnings per common share were computed by dividing net income (loss) available to common shareholders by the weighted average number of shares of common stock outstanding during the year.
	The number of shares utilized to compute earnings per share for the years ended December 31, 2013, 2012 and 2011, have been restated to reflect a 1 for 5 reverse stock split effective December 13, 2013.
	In 2013, 2012, and 2011, options and warrants to purchase 102,000, 87,000, and 225,000 shares , respectively, were antidilutive and accordingly were excluded in determining diluted earnings per share.
		Year Ended December 31
		Net			Shares		Per
		Income					Share
		(Loss)					Amount
		(Dollars in thousands,
		except per share data)
	2013
	Basic Earnings Per Share
	Income available to common shareholders	$	47,916			19,449,560	$	2.46
	Diluted Earnings Per Share
	Employee restricted stock (See Note J)					200,445
	Income available to common shareholders plus assumed conversions	$	47,916			19,650,005	$	2.44
	2012
	Basic and diluted Earnings Per Share
	Loss available to common shareholders	$	(4,458	)		18,748,757	$	(0.24	)
	2011
	Basic Earnings Per Share
	Income available to common shareholders	$	2,919			18,702,397	$	0.16
	Diluted Earnings Per Share
	Employee restricted stock (See Note J)					57,818
	Income available to common shareholders plus assumed conversions	$	2,919			18,760,215	$	0.16

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
General	'
	General: Seacoast Banking Corporation of Florida (“Company”) is a single segment bank holding company with one operating subsidiary bank, Seacoast National Bank (“Seacoast National”, together the “Company”). Seacoast National’s service area includes Okeechobee, Highlands, Hendry, Glades, DeSoto, Palm Beach, Martin, St. Lucie, Brevard, Indian River, Broward, Orange and Seminole counties, which are located in central and southeast Florida. The bank operates full service branches within its markets, and during 2013 opened five new loan production offices in Orlando, Fort Lauderdale and Boca Raton.
	The consolidated financial statements include the accounts of Seacoast and all its majority-owned subsidiaries but exclude five trusts created for the issuance of trust preferred securities. In consolidation, all significant intercompany accounts and transactions are eliminated.
	The accounting and reporting policies of the Company are in accordance with accounting principles generally accepted in the United States of America, and they conform to general practices within the applicable industries.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents: Cash and cash equivalents include cash and due from banks, interest-bearing bank balances and federal funds sold and securities purchased under resale agreements. Cash and cash equivalents have original maturities of three months or less, and accordingly, the carrying amount of these instruments is deemed to be a reasonable estimate of fair value.
Securities Purchased and Sold Agreements	'
	Securities Purchased and Sold Agreements: Securities purchased under resale agreements and securities sold under repurchase agreements are generally accounted for as collateralized financing transactions and are recorded at the amount at which the securities were acquired or sold plus accrued interest. It is the Company’s policy to take possession of securities purchased under resale agreements, which are primarily U.S. Government and Government agency securities. The fair value of securities purchased and sold is monitored and collateral is obtained from or returned to the counterparty when appropriate.
Use of Estimates	'
	Use of Estimates: The preparation of these financial statements requires the use of certain estimates by management in determining the Company’s assets, liabilities, revenues and expenses, and contingent liabilities. Specific areas, among others, requiring the application of management’s estimates include determination of the allowance for loan losses, the valuation of investment securities available for sale, fair value of impaired loans, contingent liabilities, other real estate owned, and valuation of deferred tax valuation allowance. Actual results could differ from those estimates.
Securities	'
	Securities: Securities are classified at date of purchase as trading, available for sale or held to maturity. Securities that may be sold as part of the Company’s asset/liability management or in response to, or in anticipation of changes in interest rates and resulting prepayment risk, or for other factors are stated at fair value with unrealized gains or losses reflected as a component of shareholders’ equity net of tax or included in noninterest income as appropriate. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available. Debt securities that the Company has the ability and intent to hold to maturity are carried at amortized cost.
	Realized gains and losses, including other than temporary impairments, are included in noninterest income as investment securities gains (losses). Interest and dividends on securities, including amortization of premiums and accretion of discounts, is recognized in interest income on an accrual basis using the interest method. The Company anticipates prepayments of principal in the calculation of the effective yield for collateralized mortgage obligations and mortgage backed securities by obtaining estimates of prepayments from independent third parties. The adjusted cost of each specific security sold is used to compute realized gains or losses on the sale of securities on a trade date basis.
	On a quarterly basis, the Company makes an assessment to determine whether there have been any events or economic circumstances to indicate that a security is impaired on an other-than-temporary basis. Management considers many factors including the length of time the security has had a fair value less than the cost basis; our intent and ability to hold the security for a period of time sufficient for a recovery in value; recent events specific to the issuer or industry; and for debt securities, external credit ratings and recent downgrades. Securities on which there is an unrealized loss that is deemed to be other-than temporary are written down to fair value with the write-down recorded as a realized loss.
	For securities which are transferred into held to maturity from available for sale the unrealized gain or loss at the date of transfer is reported as a component of shareholders’ equity and is amortized over the remaining life as an adjustment of yield using the interest method.
	Seacoast National is a member of the Federal Home Loan Bank system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.
Loans	'
	Loans: Loans are recognized at the principal amount outstanding, net of unearned income and amounts charged off. Unearned income includes discounts, premiums and deferred loan origination fees reduced by loan origination costs. Unearned income on loans is amortized to interest income over the life of the related loan using the effective interest rate method. Interest income is recognized on an accrual basis.
	Fees received for providing loan commitments and letters of credit that may result in loans are typically deferred and amortized to interest income over the life of the related loan, beginning with the initial borrowing. Fees on commitments and letters of credit are amortized to noninterest income as banking fees and commissions on a straight-line basis over the commitment period when funding is not expected.
	Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are considered held for investment.
	The Company accounts for loans in accordance with ASC topics 310 and 470, when due to a deterioration in a borrower’s financial position, the Company grants concessions that would not otherwise be considered. Troubled debt restructured (TDR) loans are tested for impairment and placed in nonaccrual status. If borrowers perform pursuant to the modified loan terms for at least six months and the remaining loan balances are considered collectible, the loans are returned to accrual status. When the Company modifies the terms of an existing loan that is not considered a troubled debt restructuring, the Company follows the provisions of ASC 310 “Creditor’s Accounting for a Modification or Exchange of Debt Instruments.”
	A loan is considered to be impaired when based on current information, it is probable the Company will not receive all amounts due in accordance with the contractual terms of a loan agreement. The fair value is measured based on either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. A loan is also considered impaired if its terms are modified in a troubled debt restructuring. When the ultimate collectibility of the principal balance of an impaired loan is in doubt, all cash receipts are applied to principal. Once the recorded principal balance has been reduced to zero, future cash receipts are applied to interest income, to the extent any interest has been forgone, and then they are recorded as recoveries of any amounts previously charged off.
	The accrual of interest is generally discontinued on loans and leases, except consumer loans, that become 90 days past due as to principal or interest unless collection of both principal and interest is assured by way of collateralization, guarantees or other security. Generally, loans past due 90 days or more are placed on nonaccrual status regardless of security. When interest accruals are discontinued, unpaid interest is reversed against interest income. Consumer loans that become 120 days past due are generally charged off. When borrowers demonstrate over an extended period the ability to repay a loan in accordance with the contractual terms of a loan classified as nonaccrual, the loan is returned to accrual status. Interest income on nonaccrual loans is either recorded using the cash basis method of accounting or recognized after the principal has been reduced to zero, depending on the type of loan.
Derivatives Used for Risk Management	'
	Derivatives Used for Risk Management: The Company may designate a derivative as either a hedge of the fair value of a recognized fixed rate asset or liability or an unrecognized firm commitment (“fair value” hedge), a hedge of a forecasted transaction or of the variability of future cash flows of a floating rate asset or liability (“cash flow” hedge). All derivatives are recorded as other assets or other liabilities on the balance sheet at their respective fair values with unrealized gains and losses recorded either in other comprehensive income or in the results of operations, depending on the purpose for which the derivative is held. Derivatives that do not meet the criteria for designation as a hedge at inception, or fail to meet the criteria thereafter, are carried at fair value with unrealized gains and losses recorded in the results of operations.
	To the extent of the effectiveness of a cash flow hedge, changes in the fair value of a derivative that is designated and qualifies as a cash flow hedge are recorded in other comprehensive income. The net periodic interest settlement on derivatives is treated as an adjustment to the interest income or interest expense of the hedged assets or liabilities.
	At inception of a hedge transaction, the Company formally documents the hedge relationship and the risk management objective and strategy for undertaking the hedge. This process includes identification of the hedging instrument, hedged item, risk being hedged and the methodology for measuring ineffectiveness. In addition, the Company assesses both at the inception of the hedge and on an ongoing quarterly basis, whether the derivative used in the hedging transaction has been highly effective in offsetting changes in fair value or cash flows of the hedged item, and whether the derivative as a hedging instrument is no longer appropriate.
	The Company discontinues hedge accounting prospectively when either it is determined that the derivative is no longer highly effective in offsetting changes in the fair value or cash flows of a hedged item; the derivative expires or is sold, terminated or exercised; the derivative is de-designated because it is unlikely that a forecasted transaction will occur; or management determines that designation of the derivative as a hedging instrument is no longer appropriate.
	When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted as an adjustment to yield over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transaction are still expected to occur, unrealized gains and losses that are accumulated in other comprehensive income are included in the results of operations in the same period when the results of operations are also affected by the hedged cash flow. They are recognized in the results of operations immediately if the cash flow hedge was discontinued because a forecasted transaction is not expected to occur.
	Certain commitments to sell loans are derivatives. These commitments are recorded as a freestanding derivative and classified as an other asset or liability.
Loans Held for Sale	'
	Loans Held for Sale: Loans are classified as held for sale based on management’s intent to sell the loans, either as part of a core business strategy or related to a risk mitigation strategy. Loans held for sale and any related unfunded lending commitments are recorded at fair value, if elected or the lower of cost (which is the carrying amount net of deferred fees and costs and applicable allowance for loan losses and reserve for unfunded lending commitments) or fair market value less costs to sell. Adjustments to reflect unrealized gains and losses resulting from changes in fair value and realized gains and losses upon ultimate sale of the loans are classified as noninterest income in the Consolidated Statements of Income. At the time of the transfer to loans held for sale, if the fair market value is less than cost, the difference is recorded as additional provision for credit losses in the results of operations. Fair market value is determined based on quoted market prices for the same or similar loans, outstanding investor commitments or discounted cash flow analyses using market assumptions.
	At December 31, 2013 fair market value for substantially all the loans in loans held for sale were obtained by reference to prices for the same or similar loans from recent transactions. For a relationship that includes an unfunded lending commitment, the cost basis is the outstanding balance of the loan net of the allowance for loan losses and net of any reserve for unfunded lending commitments. This cost basis is compared to the fair market value of the entire relationship including the unfunded lending commitment.
	Individual loans or pools of loans are transferred from the loan portfolio to loans held for sale when the intent to hold the loans has changed and there is a plan to sell the loans within a reasonable period of time. Loans held for sale are reviewed quarterly. Subsequent declines or recoveries of previous declines in the fair market value of loans held for sale are recorded in other fee income in the results of operations. Fair market value changes occur due to changes in interest rates, the borrower’s credit, the secondary loan market and the market for a borrower’s debt. If an unfunded lending commitment expires before a sale occurs, the reserve associated with the unfunded lending commitment is recognized as a credit to other fee income in the results of operations.
Fair Value Measurements	'
	Fair Value Measurements: The Company measures or monitors many of its assets and liabilities on a fair value basis. Certain assets and liabilities are measured on a recurring basis. Examples of these include derivative instruments, available for sale and trading securities, loans held for sale and long-term debt. Additionally, fair value is used on a non-recurring basis to evaluate assets or liabilities for impairment or for disclosure purposes. Examples of these non-recurring uses of fair value include certain loans held for sale accounted for on a lower of cost or fair value, mortgage servicing rights, goodwill, and long-lived assets. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, the Company uses various valuation techniques and assumptions when estimating fair value.
	The Company applied the following fair value hierarchy:
	Level 1 – Assets or liabilities for which the identical item is traded on an active exchange, such as publicly-traded instruments or futures contracts.
	Level 2 – Assets and liabilities valued based on observable market data for similar instruments.
	Level 3 – Assets and liabilities for which significant valuation assumptions are not readily observable in the market; instruments valued based on the best available data, some of which is internally-developed, and considers risk premiums that a market participant would require.
	When determining the fair value measurements for assets and liabilities required or permitted to be recorded at and/or marked to fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability. When possible, the Company looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Company looks to market observable data for similar assets and liabilities. Nevertheless, certain assets and liabilities are not actively traded in observable markets and the Company must use alternative valuation techniques to derive a fair value measurement.
Other Real Estate Owned	'
	Other Real Estate Owned: Other real estate owned (“OREO”) consists of real estate acquired in lieu of unpaid loan balances. These assets are carried at an amount equal to the loan balance prior to foreclosure plus costs incurred for improvements to the property, but no more than the estimated fair value of the property less estimated selling costs. Any valuation adjustments required at the date of transfer are charged to the allowance for loan losses. Subsequently, unrealized losses and realized gains and losses are included in other noninterest expense. Operating results from OREO are recorded in other noninterest expense.
Bank Premises and Equipment	'
	Bank Premises and Equipment: Bank premises and equipment are stated at cost, less accumulated depreciation and amortization. Premises and equipment include certain costs associated with the acquisition of leasehold improvements. Depreciation and amortization are recognized principally by the straight-line method, over the estimated useful lives as follows: buildings—25-40 years, leasehold improvements—5-25 years, furniture and equipment—3-12 years. Premises and equipment and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value.
Other Intangible Assets	'
	Other Intangible Assets: Intangible assets with indefinite lives are not subject to amortization. Rather they are subject to impairment tests at least annually, or more often if events or circumstances indicate there may be impairment. Intangible assets with finite lives continue to be amortized over the period the Company expects to benefit from such assets and are periodically reviewed to determine whether there have been any events or circumstances to indicate the recorded amount is not recoverable from projected undiscounted net operating cash flows. A loss is recognized to reduce the carrying amount to fair value, where appropriate.
Revenue Recognition	'
	Revenue Recognition: Revenue is recognized when the earnings process is complete and collectibility is assured. Brokerage fees and commissions are recognized on a trade date basis. Asset management fees, measured by assets at a particular date, are accrued as earned. Commission expenses are recorded when the related revenue is recognized.
Allowance for Loan Losses and Reserve for Unfunded Lending Commitments	'
	Allowance for Loan Losses and Reserve for Unfunded Lending Commitments: The Company has developed policies and procedures for assessing the adequacy of the allowance for loan losses and reserve for unfunded lending commitments that reflect the evaluation of credit risk after careful consideration of all available information. Where appropriate this assessment includes monitoring qualitative and quantitative trends including changes in levels of past due, criticized and nonperforming loans. In developing this assessment, the Company must necessarily rely on estimates and exercise judgment regarding matters where the ultimate outcome is unknown such as economic factors, developments affecting companies in specific industries and issues with respect to single borrowers. Depending on changes in circumstances, future assessments of credit risk may yield materially different results, which may result in an increase or a decrease in the allowance for loan losses.
	The allowance for loan losses and reserve for unfunded lending commitments is maintained at a level the Company believes is adequate to absorb probable losses inherent in the loan portfolio and unfunded lending commitments as of the date of the consolidated financial statements. The Company employs a variety of modeling and estimation tools in developing the appropriate allowance for loan losses and reserve for unfunded lending commitments. The allowance for loan losses and reserve for unfunded lending commitments consists of formula-based components for both commercial and consumer loans, allowance for impaired commercial loans and allowance related to additional factors that are believed indicative of current trends and business cycle issues.
	If necessary, a specific allowance is established for individually evaluated impaired loans. The specific allowance established for these loans is based on a thorough analysis of the most probable source of repayment, including the present value of the loan’s expected future cash flows, the loan’s estimated market value, or the estimated fair value of the underlying collateral depending on the most likely source of repayment. General allowances are established for loans grouped into pools based on similar characteristics. In this process, general allowance factors are based on an analysis of historical charge-off experience, portfolio trends, regional and national economic conditions, and expected loss given default derived from the Company’s internal risk rating process.
	The Company monitors qualitative and quantitative trends in the loan portfolio, including changes in the levels of past due, criticized and nonperforming loans. The distribution of the allowance for loan losses and reserve for unfunded lending commitments between the various components does not diminish the fact that the entire allowance for loan losses and reserve for unfunded lending commitments is available to absorb credit losses in the loan portfolio. The principal focus is, therefore, on the adequacy of the total allowance for loan losses and reserve for unfunded lending commitments.
	In addition, various regulatory agencies, as an integral part of their examination process, periodically review the Company’s bank subsidiary’s allowance for loan losses and reserve for unfunded lending commitments. These agencies may require such subsidiaries to recognize changes to the allowance for loan losses and reserve for unfunded lending commitments based on their judgments about information available to them at the time of their examination.
Income Taxes	'
	Income Taxes: The Company uses the asset and liability method of accounting for income taxes. Deferred tax assets and liabilities are determined based on temporary differences between the carrying amounts of assets and liabilities in the consolidated financial statements and their related tax bases and are measured using the enacted tax rates and laws that are in effect. A valuation allowance is recognized for a deferred tax asset if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax asset will not be realized. The effect on deferred tax assets and liabilities of a change in rates is recognized as income or expense in the period in which the change occurs. See Note L, Income Taxes for related disclosures.
Earnings Per Share	'
	Earnings per Share: Basic earnings per share are computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding during each period. Diluted earnings per share are based on the weighted-average number of common shares outstanding during each period, plus common share equivalents calculated for stock options and performance restricted stock outstanding using the treasury stock method.
Stock-Based Compensation	'
	Stock-Based Compensation: The four stock option plans are accounted for under ASC Topic 718 and the fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with market assumptions. This amount is amortized on a straight-line basis over the vesting period, generally five years. (See Note J)
	For restricted stock awards, which generally vest based on continued service with the Company, the deferred compensation is measured as the fair value of the shares on the date of grant, and the deferred compensation is amortized as salaries and employee benefits in accordance with the applicable vesting schedule, generally straight-line over five years. Some shares vest based upon the Company achieving certain performance goals and salary amortization expense is based on an estimate of the most likely results on a straight line basis.
Recently Issued Accounting Standards, Not Adopted	'
	Recently Issued Accounting Standards, Not Adopted as of December 31, 2013
	In July of 2013, the Financial Accounting Standards Board (“FASB”) issued amended guidance that resolves the diversity in practice for the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This new accounting guidance requires the netting of unrecognized tax benefits (“UTBs”) against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. Under the new standard, UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. The new standard requires prospective adoption but allows retrospective adoption for all periods presented. We will adopt the FASB’s amended guidance for our annual reporting period beginning January 1, 2014. We do not expect the adoption of the guidance to have a significant impact on our financial position, results of operations or cash flows.
	In March of 2013, the FASB issued amended guidance that resolves the diversity in practice for the accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or groups of assets within a foreign entity. The amended guidance requires that when a parent entity ceases to have a controlling financial interest in a subsidiary or group of assets within a foreign entity, the parent is required to release any related cumulative translation adjustment into net income in instances when a sale or transfer results in the complete or substantially complete liquidation of the foreign entity in which the subsidiary or group of assets had resided. Additionally, the amended guidance clarifies that the sale of an investment in a foreign entity includes both (1) events that result in the loss of a controlling financial interest in a foreign entity and (2) events that result in an acquirer obtaining control of an acquiree in which it held an equity interest immediately before the acquisition date. In these instances, an entity is required to release the cumulative translation adjustment into net income. We will adopt the FASB’s amended guidance during the three months ended March 31, 2014. We do not expect the adoption of the guidance to have a significant impact on our financial position, results of operations or cash flows.

Securities_Tables

Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]	'
Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment	'
	The amortized cost and fair value of securities available for sale and held for investment at December 31, 2013 and December 31, 2012 are summarized as follows:
		December 31, 2013
		Gross		Gross			Gross			Fair Value
		Amortized		Unrealized			Unrealized
		Cost		Gains			Losses
		(In thousands)
	SECURITIES AVAILABLE FOR SALE
	U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	100	$	0		$	0		$	100
	Mortgage-backed securities of U.S. Government Sponsored Entities		129,468		1,456			(4,189	)		126,735
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		383,392		776			(14,747	)		369,421
	Private mortgage-backed securities		29,800		0			(226	)		29,574
	Private collateralized mortgage obligations		76,520		731			(413	)		76,838
	Collateralized loan obligations		32,592		0			(413	)		32,179
	Obligations of state and political subdivisions		6,586		193			(15	)		6,764
		$	658,458	$	3,156		$	(20,003	)	$	641,611
		31-Dec-12
		Gross		Gross			Gross			Fair Value
		Amortized		Unrealized			Unrealized
		Cost		Gains			Losses
		(In thousands)
	SECURITIES AVAILABLE FOR SALE
	U.S. Treasury securities and obligations of U.S. Government Sponsored Entities	$	1,700	$	7		$	0		$	1,707
	Mortgage-backed securities of U.S. Government Sponsored Entities		186,404		3,320			(469	)		189,255
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		352,731		2,430			(902	)		354,259
	Private collateralized mortgage obligations		96,258		1,203			(530	)		96,931
	Obligations of state and political subdivisions		847		51			0			898
		$	637,940	$	7,011		$	(1,901	)	$	643,050
	SECURITIES HELD FOR INVESTMENT
	Collateralized mortgage obligations of U.S. Government Sponsored Entities	$	4,687	$	0		$	(92	)	$	4,595
	Private collateralized mortgage obligations		1,278		33			0			1,311
	Obligations of state and political subdivisions		6,353		737			(3	)		7,087
	Other		1,500		49			0			1,549
		$	13,818	$	819		$	(95	)	$	14,542
Amortized Cost and Fair Value of Securities by Contractual Maturity	'
	The amortized cost and fair value of securities at December 31, 2013, by contractual maturity, are shown below.
		Available for Sale
		Amortized		Fair Value
		Cost
		(In thousands)
	Due in less than one year	$	100	$	100
	Due after one year through five years		817		832
	Due after five years through ten years		8,438		8,349
	Due after ten years		29,923		29,762
			39,278		39,043
	Mortgage-backed securities of U.S. Government Sponsored Entities		129,468		126,735
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		383,392		369,421
	Private mortgage-backed securities		29,800		29,574
	Private collateralized mortgage obligations		76,520		76,838
		$	658,458	$	641,611
Schedule of Unrealized Loss and Fair Value on Investments	'
	The tables below indicate the amount of securities with unrealized losses and period of time for which these losses were outstanding at December 31, 2013 and December 31, 2012, respectively.
		December 31, 2013
		Less than 12 months					12 months or longer						Total
		Fair Value		Unrealized			Fair			Unrealized			Fair Value		Unrealized
				Losses			Value			Losses					Losses
		(In thousands)
	Mortgage-backed securities of U.S. Government Sponsored Entities	$	33,425	$	(2,045	)	$	35,043		$	(2,144	)	$	68,468	$	(4,189	)
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		287,312		(12,450	)		45,657			(2,297	)		332,969		(14,747	)
	Private mortgage-backed securities		29,574		(226	)		0			0			29,574		(226	)
	Private collateralized mortgage obligations		47,653		(413	)		0			0			47,653		(413	)
	Collateralized loan obligations		32,179		(413	)		0			0			32,179		(413	)
	Obligations of state and political subdivisions		502		(14	)		125			(1	)		627		(15	)
	Total temporarily impaired securities	$	430,645	$	(15,561	)	$	80,825		$	(4,442	)	$	511,470	$	(20,003	)
		31-Dec-12
		Less than 12 months					12 months or longer						Total
		Fair Value		Unrealized			Fair			Unrealized			Fair Value		Unrealized
				Losses			Value			Losses					Losses
		(In thousands)
	Mortgage-backed securities of U.S. Government Sponsored Entities	$	54,289	$	(469	)	$	0		$	0		$	54,289	$	(469	)
	Collateralized mortgage obligations of U.S. Government Sponsored Entities		150,057		(901	)		4,593			(93	)		154,650		(994	)
	Private collateralized mortgage obligations		29,969		(441	)		9,221			(89	)		39,190		(530	)
	Obligations of state and political subdivisions		0		0			125			(3	)		125		(3	)
	Total temporarily impaired securities	$	234,315	$	(1,811	)	$	13,939		$	(185	)	$	248,254	$	(1,996	)

Loans_Tables

Loans (Tables)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Information Relating to Loans	'
	Information relating to loans at December 31 is summarized as follows:
			2013		2012
			(In thousands)
	Construction and land development		$	67,450	$	60,736
	Commercial real estate			520,382		486,828
	Residential real estate			592,746		569,331
	Commercial and financial			78,636		61,903
	Consumer			44,713		46,930
	Other			280		353
	NET LOAN BALANCES		$	1,304,207	$	1,226,081
	-1	Net loan balances at December 31, 2013 and 2012 include deferred costs of $2,618,000 and $1,530,000, respectively.
Contractual Aging of Recorded Investment in Past Due Loans	'
	The following tables present the contractual aging of the recorded investment in past due loans by class of loans as of December 31, 2013 and 2012:
	December 31, 2013		Accruing		Accruing		Accruing		Nonaccrual		Current		Total
			30-59		60-89		Greater						Financing
			Days		Days		Than 90						Receivables
			Past Due		Past Due		Days
			(In thousands)
	Construction and land development		$	3	$	0	$	0	$	1,302	$	66,145	$	67,450
	Commercial real estate			684		345		0		5,111		514,242		520,382
	Residential real estate			974		909		160		20,705		569,998		592,746
	Commercial and financial			353		0		0		13		78,270		78,636
	Consumer			33		27		0		541		44,112		44,713
	Other			0		0		0		0		280		280
	Total		$	2,047	$	1,281	$	160	$	27,672	$	1,273,047	$	1,304,207
	December 31, 2012		Accruing		Accruing		Accruing		Nonaccrual		Current		Total
			30-59		60-89		Greater						Financing
			Days		Days		Than 90						Receivables
			Past Due		Past Due		Days
			(In thousands)
	Construction and land development		$	7	$	0	$	0	$	1,342	$	59,387	$	60,736
	Commercial real estate			832		5		0		17,234		468,757		486,828
	Residential real estate			1,179		1,377		1		22,099		544,675		569,331
	Commercial and financial			41		0		0		0		61,862		61,903
	Consumer			109		0		0		280		46,541		46,930
	Other			0		0		0		0		353		353
	Total		$	2,168	$	1,382	$	1	$	40,955	$	1,181,575	$	1,226,081
Risk Category, Class of Loans and Recorded Investment	'
	The following tables present the risk category of loans by class of loans based on the most recent analysis performed as of December 31, 2013 and 2012:
	December 31, 2013		Construction		Commercial		Residential		Commercial		Consumer		Total
			& Land		Real Estate		Real		and
			Development				Estate		Financial
			(In thousands)
	Pass		$	63,186	$	485,268	$	554,681	$	77,840	$	43,267	$	1,224,242
	Special mention			583		6,810		824		382		300		8,899
	Substandard			0		15,886		1,670		248		453		18,257
	Doubtful			0		0		0		0		0		0
	Nonaccrual			1,302		5,111		20,705		13		541		27,672
	Pass-Troubled debt restructures			1,838		5,584		30		0		0		7,452
	Troubled debt restructures			541		1,723		14,836		153		432		17,685
			$	67,450	$	520,382	$	592,746	$	78,636	$	44,993	$	1,304,207
	December 31, 2012		Construction		Commercial		Residential		Commercial		Consumer		Total
			& Land		Real Estate		Real		and
			Development				Estate		Financial
			(In thousands)
	Pass		$	54,994	$	414,023	$	527,891	$	61,123	$	45,907	$	1,103,938
	Special mention			1,717		12,137		1,686		587		450		16,577
	Substandard			0		22,180		36		193		256		22,665
	Doubtful			0		0		0		0		0		0
	Nonaccrual			1,342		17,234		22,099		0		280		40,955
	Pass-Troubled debt restructures			2,103		6,513		0		0		0		8,616
	Troubled debt restructures			580		14,741		17,619		0		390		33,330
			$	60,736	$	486,828	$	569,331	$	61,903	$	47,283	$	1,226,081

Impaired_Loans_and_Allowance_f1

Impaired Loans and Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Modified Loans	'
	The following table presents loans that were modified within the twelve months ending December 31, 2013:
		Number		Pre-			Post-			Specific		Valuation
		of		Modification			Modification			Reserve		Allowance
		Contracts		Outstanding			Outstanding			Recorded		Recorded
				Recorded			Recorded
				Investment			Investment
				(In thousands)
	Construction and land development		1	$	14		$	13		$	0	$	1
	Residential real estate		11		1,422			1,254			0		168
	Commercial real estate		7		3,421			3,059			0		362
	Commercial and financial		2		154			154			0		0
	Consumer		1		92			74			0		18
			22	$	5,103		$	4,554		$	0	$	549
Troubled Debt Restructurings Defaulted	'
	Accruing loans that were restructured within the twelve months ending December 31, 2013, 2012 and 2011 and defaulted during the twelve months ended December 31, 2013, 2012 and 2011 are presented in the table below. The Company considers a loan to have defaulted when it becomes 60 days or more delinquent under the modified terms, has been transferred to nonaccrual status, or has been transferred to other real estate owned. A defaulted TDR is generally placed on nonaccrual and specific allowance for loan loss is assigned in accordance with the Company’s policy as disclosed in Note A.
		Number of		Recorded
		Contracts		Investment
		(Dollars in thousands)
	December 31, 2013:
	Residential real estate		1	$	328
	Commercial real estate		1		1,620
	December 31, 2012:
	Residential real estate		7	$	913
	December 31, 2011:
	Construction and land development		1	$	37
	Residential real estate		1		220
	Commercial and financial		1		8
Company's Recorded Investment in Impaired Loans and Related Valuation Allowance	'
	At December 31, 2013 and 2012, the Company’s recorded investment in impaired loans and related valuation allowance was as follows:
		Impaired Loans
		for the Year Ended December 31, 2013
		Recorded		Unpaid			Related			Average		Interest
		Investment		Principal			Valuation			Recorded		Income
				Balance			Allowance			Investment		Recognized
				( In thousands )
	With no related allowance recorded:
	Construction and land development	$	2,561	$	3,180		$	0		$	2,446	$	102
	Commercial real estate		4,481		6,577			0			7,382		28
	Residential real estate		12,366		17,372			0			14,512		81
	Commercial and financial		153		153			0			19		9
	Consumer		425		569			0			162		19
	With an allowance recorded:
	Construction and land development		1,120		1,197			149			1,347		36
	Commercial real estate		7,937		8,046			638			17,264		395
	Residential real estate		23,365		24,766			4,528			22,899		566
	Commercial and financial		13		13			13			1		1
	Consumer		548		573			118			571		23
	Total:
	Construction and land development		3,681		4,377			149			3,793		138
	Commercial real estate		12,418		14,623			638			24,646		423
	Residential real estate		35,731		42,138			4,528			37,411		647
	Commercial and financial		166		166			13			20		10
	Consumer		973		1,142			118			733		42
		$	52,969	$	62,446		$	5,446		$	66,603	$	1,260
		Impaired Loans
		for the Year Ended December 31, 2012
		Recorded		Unpaid			Related			Average		Interest
		Investment		Principal			Valuation			Recorded		Income
				Balance			Allowance			Investment		Recognized
				( In thousands )
	With no related allowance recorded:
	Construction and land development	$	1,128	$	1,608		$	0		$	1,399	$	5
	Commercial real estate		12,357		14,337			0			12,103		433
	Residential real estate		15,463		22,022			0			12,019		455
	Commercial and financial		0		0			0			7		0
	Consumer		223		255			0			431		12
	With an allowance recorded:
	Construction and land development		2,897		2,941			230			3,539		127
	Commercial real estate		26,130		26,648			2,264			39,527		1,304
	Residential real estate		24,256		24,752			4,700			26,795		696
	Commercial and financial		0		0			0			34		0
	Consumer		447		460			75			585		22
	Total:
	Construction and land development		4,025		4,549			230			4,938		132
	Commercial real estate		38,487		40,985			2,264			51,630		1,737
	Residential real estate		39,719		46,774			4,700			38,814		1,151
	Commercial and financial		0		0			0			41		0
	Consumer		670		715			75			1,016		34
		$	82,901	$	93,023		$	7,269		$	96,439	$	3,054
Activity in Allowance for Loan Losses	'
	Activity in the allowance for loans losses for the three years ended December 31, 2013, 2012 and 2011 are summarized as follows:
		Beginning		Provision			Charge-			Recoveries		Net Charge-			Ending
		Balance		for Loan			Offs					Offs			Balance
				Losses
		(In thousands)
	December 31 , 2013
	Construction and land development	$	1,134	$	66		$	(604	)	$	212	$	(392	)	$	808
	Commercial real estate		8,849		(522	)		(2,714	)		547		(2,167	)		6,160
	Residential real estate		11,090		3,273			(3,153	)		449		(2,704	)		11,659
	Commercial and financial		468		(24	)		(60	)		326		266			710
	Consumer		563		395			(253	)		26		(227	)		731
		$	22,104	$	3,188		$	(6,784	)	$	1,560	$	(5,224	)	$	20,068
	December 31 , 2012
	Construction and land development	$	1,883	$	(478	)	$	(612	)	$	341	$	(271	)	$	1,134
	Commercial real estate		11,477		3,209			(8,539	)		2,702		(5,837	)		8,849
	Residential real estate		10,966		7,767			(8,381	)		738		(7,643	)		11,090
	Commercial and financial		402		283			(346	)		129		(217	)		468
	Consumer		837		15			(410	)		121		(289	)		563
		$	25,565	$	10,796		$	(18,288	)	$	4,031	$	(14,257	)	$	22,104
	December 31, 2011
	Construction and land development	$	7,214	$	(1,645	)	$	(4,739	)	$	1,053	$	(3,686	)	$	1,883
	Commercial real estate		18,563		(3,777	)		(3,663	)		354		(3,309	)		11,477
	Residential real estate		10,102		7,833			(7,482	)		513		(6,969	)		10,966
	Commercial and financial		480		(379	)		0			301		301			402
	Consumer		1,385		(58	)		(562	)		72		(490	)		837
		$	37,744	$	1,974		$	(16,446	)	$	2,293	$	(14,153	)	$	25,565
Loan Portfolio and Related Allowance	'
	The Company’s loan portfolio and related allowance at December 31, 2013 and 2012 is shown in the following tables.
		Individually Evaluated					Collectively Evaluated for					Total
		for Impairment					Impairment
		Carrying		Associated			Carrying			Associated		Carrying			Associated
		Value		Allowance			Value			Allowance		Value			Allowance
		(In thousands)
	December 31, 2013
	Construction and land development	$	3,681	$	149		$	63,769		$	659	$	67,450		$	808
	Commercial real estate		12,418		638			507,964			5,522		520,382			6,160
	Residential real estate		35,731		4,528			557,015			7,131		592,746			11,659
	Commercial and financial		166		13			78,470			697		78,636			710
	Consumer		973		118			44,020			613		44,993			731
		$	52,969	$	5,446		$	1,251,238		$	14,622	$	1,304,207		$	20,068
		Individually Evaluated					Collectively Evaluated for					Total
		for Impairment					Impairment
		Carrying		Associated			Carrying			Associated		Carrying			Associated
		Value		Allowance			Value			Allowance		Value			Allowance
		(In thousands)
	December 31, 2012
	Construction and land development	$	4,025	$	230		$	56,711		$	904	$	60,736		$	1,134
	Commercial real estate		38,487		2,264			448,341			6,585		486,828			8,849
	Residential real estate		39,719		4,700			529,612			6,390		569,331			11,090
	Commercial and financial		0		0			61,903			468		61,903			468
	Consumer		670		75			46,613			488		47,283			563
		$	82,901	$	7,269		$	1,143,180		$	14,835	$	1,226,081		$	22,104

Bank_Premises_and_Equipment_Ta

Bank Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Summary of Bank Premises and Equipment	'
	Bank premises and equipment are summarized as follows:
		Cost		Accumulated			Net
				Depreciation &			Carrying
				Amortization			Value
				(In thousands)
	December 31, 2013
	Premises (including land of $8,978)	$	49,647	$	(20,518	)	$	29,129
	Furniture and equipment		22,138		(16,762	)		5,376
		$	71,785	$	(37,280	)	$	34,505
	December 31, 2012
	Premises (including land of $8,978)	$	48,064	$	(19,051	)	$	29,013
	Furniture and equipment		21,311		(15,859	)		5,452
		$	69,375	$	(34,910	)	$	34,465

Other_Intangible_Assets_Tables

Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Gross Carrying Amount and Accumulated Amortization of Intangible Asset	'
	The gross carrying amount and accumulated amortization of the Company’s intangible asset subject to amortization at December 31 is presented below.
		2013					2012
		Gross		Accumulated			Gross		Accumulated
		Carrying		Amortization			Carrying		Amortization
		Amount					Amount
		(In thousands)
	Deposit base	$	9,494	$	(8,776	)	$	9,494	$	(7,993	)
		$	9,494	$	(8,776	)	$	9,494	$	(7,993	)
Intangible Amortization Expense	'
	Intangible amortization expense related to the deposit base intangible for each of the years in the three-year period ended December 31, 2013, is presented below.
		Year Ended December 31
		2013		2012			2011
		(In thousands)
	Intangible Amortization
	Identified intangible assets Deposit base	$	783	$	788		$	847

Borrowings_Tables

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	'
	All of the Company’s short-term borrowings were comprised of federal funds purchased and securities sold under agreements to repurchase with maturities primarily from overnight to seven days:
		2013			2012			2011
		(In thousands)
	Maximum amount outstanding at any month end	$	165,770		$	149,316		$	154,440
	Weighted average interest rate at end of year		0.17	%		0.21	%		0.22	%
	Average amount outstanding	$	155,222		$	141,592		$	106,495
	Weighted average interest rate during the year		0.18	%		0.24	%		0.26	%

Employee_Benefits_and_Stock_Co1

Employee Benefits and Stock Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Non-Vested Restricted Stock Awards and Units	'
	Non-vested restricted units totaling 177,000 were outstanding at December 31, 2013, and are as follows:
	Number of	Remaining		Weighted Average
	Non-Vested	Unrecognized		Remaining Recognition
	Restricted Stock	Compensation Cost		Period in Years
	Units
	177,000	$1,520,000		5
Summary of Stock Option and SSARs Activity	'
	The following table presents a summary of stock option and SSARs activity for the years ended December 31, 2013, 2012 and 2011:
		Number			Option or			Weighted		Aggregate
		of			SSAR Exercise			Average		Intrinsic
		Shares			Price			Exercise		Value
					Per Share			Price
	Dec. 31, 2010		109,000			$85.40 –136.80		$	106.05	$	0
	Granted		0			0			0
	Exercised		0			0			0
	Expired		0			0			0
	Cancelled		(2,000	)		85.40 –136.80			100.7
	Dec. 31, 2011		107,000			85.40 –136.80			107.1		0
	Granted		0			0			0
	Exercised		0			0			0
	Expired		0			0			0
	Cancelled		(20,000	)		85.40 –133.60			113.3
	Dec. 31, 2012		87,000			85.40 –136.80			105.6		0
	Granted		49,000			11			11
	Exercised		0			0			0
	Expired		(28,000	)		85.4			85.4
	Cancelled		(6,000	)		111.10 –136.80			113.57
	Dec. 31, 2013		102,000			11.00 – 133.60			65.1		0
Summary of Stock Options Outstanding and Exercisable	'
	The following table summarizes information about stock options outstanding and exercisable at December 31, 2013:
	Options / SSARs Outstanding			Options / SSARs Exercisable (Vested)
	Number of	Weighted Average		Number of	Weighted		Weighted Average	Aggregate
	Shares	Remaining		Shares	Average		Remaining	Intrinsic
	Outstanding	Contractual Life		Exercisable	Exercise		Contractual Life	Value
		in Years			Price		in Years
	102,000	5.91		53,000	$115.48		2.58	$0
Restricted Stock [Member]	'
Summary of Non-Vested Restricted Stock Awards and Units	'
	Non-vested restricted stock awards totaling 168,000 shares were outstanding at December 31, 2013, 12,000 less than at December 31, 2012, and are as follows:
	Number of	Remaining		Weighted Average
	Non-Vested	Unrecognized		Remaining Recognition
	Restricted Stock	Compensation Cost		Period in Years
	Award Shares
	168,000	$2,079,000		4.37
Equity Option [Member]	'
Summary of Non-Vested Stock Activity	'
	Adjusting for potential forfeiture experience, non-vested stock options for 49,000 shares were outstanding at December 31, 2013, and are as follows:
	Number of	Weighted Average		Weighted	Remaining		Weighted Average
	Non-Vested	Remaining Contractual		Average	Unrecognized		Remaining Recognition
	Stock Options	Life in Years		Fair Value	Compensation Cost		Period in Years
	49,000	9.5		$3.10	$107,000		4.5

Lease_Commitments_Tables

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Future Minimum Lease Payments under Operating Leases	'
	At December 31, 2013, future minimum lease payments under leases with initial or remaining terms in excess of one year are as follows:
		(In thousands)
	2014	$	3,304
	2015		2,657
	2016		2,552
	2017		2,320
	2018		1,032
	Thereafter		11,332
		$	23,197

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Summary of Income Tax Expense Benefit	'
	The benefit for income taxes is as follows:
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Current
	Federal	$	160		$	0		$	0
	State		7			7			10
	Deferred
	Federal		(30,540	)		0			0
	State		(10,012	)		(7	)		(10	)
		$	(40,385	)	$	0		$	0
Reconciliation of Expected Tax Benefit with Income Tax Benefit Relating to Loss before Income Taxes	'
	The difference between the total expected tax benefit (computed by applying the U.S. Federal tax rate of 35% to pretax income in 2013, 2012 and 2011) and the reported income tax benefit relating to loss before income taxes is as follows:
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Tax rate applied to income (loss) before income taxes	$	4,061		$	(249	)	$	2,333
	Increase (decrease) resulting from the effects of:
	Tax exempt interest on obligations of states and political subdivisions		(148	)		(118	)		(143	)
	State income taxes		(259	)		(27	)		(173	)
	Stock compensation		4			28			132
	Expiration of capital loss carryforward		0			354			0
	Other		38			53			281
	Federal tax provision before valuation allowance		3,696			41			2,430
	State tax provision before valuation allowance		740			76			494
	Total income tax provision		4,436			117			2,924
	Change in valuation allowance		(44,821	)		(117	)		(2,924	)
	Income tax provision (benefit)	$	(40,385	)	$	0		$	0
Summary of Net Deferred Tax Assets (Liabilities)	'
	The net deferred tax assets (liabilities) are comprised of the following:
		December 31
		2013			2012
		(In thousands)
	Allowance for loan losses	$	8,139		$	8,964
	Other real estate owned		899			1,521
	Capital losses		0			26
	Accrued stock compensation		528			492
	Federal tax loss carryforward		42,776			44,755
	State tax loss carryforward		7,925			8,202
	Alternative minimum tax carryforward		1,304			1,304
	Net unrealized securities losses		6,503			0
	Deferred compensation		1,169			1,162
	Other		273			990
	Gross deferred tax assets		69,516			67,416
	Less: Valuation allowance		0			(44,821	)
	Deferred tax assets net of valuation allowance		69,516			22,595
	Depreciation		(1,365	)		(1,514	)
	Deposit base intangible		(233	)		(538	)
	Net unrealized securities gains		0			(1,972	)
	Accrued interest and fee income		(1,060	)		(620	)
	Gross deferred tax liabilities		(2,658	)		(4,644	)
	Net deferred tax assets	$	66,858		$	17,951
Summary of Income Tax Examination Major Tax Jurisdictions along with Tax Year	'
	The following are the major tax jurisdictions in which the Company operates and the earliest tax year subject to examination:
	Jurisdiction	Tax Year
	United States of America	2010
	Florida	2008

Noninterest_Income_and_Expense1

Noninterest Income and Expenses (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Summary of Noninterest Income and Expense	'
	Details of noninterest income and expense follow:
		Year Ended December 31
		2013		2012			2011
		(In thousands)
	Noninterest income
	Service charges on deposit accounts	$	6,711	$	6,245		$	6,262
	Trust fees		2,711		2,279			2,111
	Mortgage banking fees		4,173		3,710			2,140
	Brokerage commissions and fees		1,631		1,071			1,122
	Marine finance fees		1,189		1,111			1,209
	Interchange income		5,404		4,501			3,808
	Other deposit based EFT fees		342		336			318
	Other		2,158		2,191			1,375
			24,319		21,444			18,345
	Loss on sale of commercial loan		0		(1,238	)		0
	Securities gains, net		419		7,619			1,220
	TOTAL	$	24,738	$	27,825		$	19,565
	Noninterest expense
	Salaries and wages	$	31,006	$	29,935		$	27,288
	Employee benefits		7,327		7,710			5,875
	Outsourced data processing costs		6,372		7,382			6,583
	Telephone / data lines		1,253		1,178			1,179
	Occupancy		7,178		8,146			7,627
	Furniture and equipment		2,334		2,319			2,291
	Marketing		2,339		3,095			2,917
	Legal and professional fees		2,458		5,241			6,137
	FDIC assessments		2,601		2,805			3,013
	Amortization of intangibles		783		788			847
	Asset dispositions expense		740		1,459			2,281
	Net loss on other real estate owned and repossessed assets		1,289		3,467			3,751
	Other		9,472		9,023			7,974
	TOTAL	$	75,152	$	82,548		$	77,763

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Summary of Required Regulatory Capital	'
	Required Regulatory Capital
							Minimum for Capital					Minimum To Be Well
							Adequacy Purpose					Capitalized Under
												Prompt Corrective
												Action Provisions
		Amount		Ratio			Amount		Ratio			Amount		Ratio
		(Dollars in thousands)
	SEACOAST BANKING CORP
	(CONSOLIDATED)
	At December 31, 2013:
	Total Capital (to risk-weighted assets)	$	227,310		16.88	%	$	107,757		>8.00	%		N/A		N/A
	Tier 1 Capital (to risk-weighted assets)		210,433		15.62			53,878		>4.00	%		N/A		N/A
	Tier 1 Capital (to adjusted average assets)		210,433		9.59			92,234		>4.00	%		N/A		N/A
	At December 31, 2012:
	Total Capital (to risk-weighted assets)	$	227,428		18.33	%	$	99,247		>8.00	%		N/A		N/A
	Tier 1 Capital (to risk-weighted assets)		211,839		17.08			49,624		>4.00	%		N/A		N/A
	Tier 1 Capital (to adjusted average assets)		211,839		10.04			84,377		>4.00	%		N/A		N/A
	SEACOAST NATIONAL BANK
	(A WHOLLY OWNED BANK SUBSIDIARY)
	At December 31, 2013:
	Total Capital (to risk-weighted assets)	$	225,102		16.74	%	$	107,571		>8.00	%	$	134,463		>10.00	%
	Tier 1 Capital (to risk-weighted assets)		208,253		15.49			53,785		>4.00	%		80,678		>  6.00	%
	Tier 1 Capital (to adjusted average assets)		208,253		9.51			87,636		>4.00	%		109,545		>  5.00	%
	At December 31, 2012:
	Total Capital (to risk-weighted assets)	$	220,433		17.79	%	$	99,116		>8.00	%	$	123,895		>10.00	%
	Tier 1 Capital (to risk-weighted assets)		204,864		16.54			49,558		>4.00	%		74,337		>  6.00	%
	Tier 1 Capital (to adjusted average assets)		204,864		9.72			84,312		>4.00	%		105,389		>  5.00	%
	N/A—Not Applicable

Parent_Company_Only_Financial_1

Parent Company Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]	'
Summary of Balance Sheet	'
	Balance Sheets
		December 31
		2013			2012
		(In thousands)
	ASSETS
	Cash	$	919		$	4,067
	Securities purchased under agreement to resell with subsidiary bank, maturing within 30 days		792			2,922
	Investment in subsidiaries		250,033			212,182
	Other assets		493			13
		$	252,237		$	219,184
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Subordinated debt	$	53,610		$	53,610
	Other liabilities		23			28
	Shareholders’ equity		198,604			165,546
		$	252,237		$	219,184
Summary of Statements of Income (Loss)	'
	Statements of Income (Loss)
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Income
	Dividends from subsidiary Bank	$	0		$	0		$	0
	Interest/other		28			29			79
			28			29			79
	Interest expense		958			1,057			1,152
	Other expenses		450			575			405
	Loss before income tax benefit and equity in undistributed income of subsidiaries		(1,380	)		(1,603	)		(1,478	)
	Income tax benefit		(2,281	)		0			0
	Income (loss) before equity in undistributed income of subsidiaries		901			(1,603	)		(1,478	)
	Equity in undistributed income of subsidiaries		51,088			893			8,145
	Net income (loss)	$	51,989		$	(710	)	$	6,667
Summary of Statement of Cash Flows	'
	Statement of Cash Flows
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Cash flows from operating activities
	Interest received	$	5		$	7		$	9
	Interest paid		(957	)		(1,045	)		(3,288	)
	Dividends received		23			22			70
	Income taxes received (paid)		1,797			(32	)		(67	)
	Other		(494	)		(703	)		(420	)
	Net cash provided by (used in) operating activities		374			(1,751	)		(3,696	)
	Cash flows from investing activities
	Decrease in securities purchased under agreement to resell, maturing within 30 days, net		2,130			422			285
	Net cash provided by investment activities		2,130			422			285
	Cash flows from financing activities
	Issuance of common stock, net of related expense		46,977			0			0
	Repurchase of stock warrants, including related expense		0			(81	)		0
	Stock based employment plans		190			196			123
	Redemption of preferred stock		(50,000	)		0			0
	Dividends paid on preferred shares		(2,819	)		(2,500	)		(6,875	)
	Net cash used in financing activities		(5,652	)		(2,385	)		(6,752	)
	Net change in cash		(3,148	)		(3,714	)		(10,163	)
	Cash at beginning of year		4,067			7,781			17,944
	Cash at end of year	$	919		$	4,067		$	7,781
	RECONCILIATION OF INCOME (LOSS) TO CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES
	Net income (loss)	$	51,989		$	(710	)	$	6,667
	Adjustments to reconcile net income (loss) to net cash used in operating activities: Equity in undistributed income of subsidiaries		(51,088	)		(893	)		(8,145	)
	Other, net		(527	)		(148	)		(2,218	)
	Net cash provided by (used in) operating activities	$	374		$	(1,751	)	$	(3,696	)

Contingent_Liabilities_and_Com1

Contingent Liabilities and Commitments with Off-Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Summary of Financial Instruments with Off-Balance-Sheet Risk	'
		December 31
		2013		2012
		(In thousands)
	Contract or Notional Amount Financial instruments whose contract amounts represent credit risk:
	Commitments to extend credit	$	135,056	$	118,887
	Standby letters of credit and financial guarantees written:
	Secured		2,722		2,509
	Unsecured		8		8
	Unfunded limited partner equity commitment		3,746		4,000
Summary of Minimum Future Contractual Obligation Under Renewal of Contract	'
	The Company’s subsidiary bank renewed its contract for outsourced data services on December 31, 2012 for a period of five years and six months which requires a minimum payment for early termination without cause as follows:
	Year Ended	(In thousands)
	2013	$	11,016
	2014		8,568
	2015		6,120
	2016		3,672

Supplemental_Disclosures_for_C1

Supplemental Disclosures for Consolidated Statements of Cash Flows (Tables)	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]	'
Reconciliation of Net Income (Loss) to Net Cash Provided by Operating Activities	'
	Reconciliation of Net Income (Loss) to Net Cash Provided by Operating Activities for the three years ended:
		Year Ended December 31
		2013			2012			2011
		(In thousands)
	Net income (loss)	$	51,989		$	(710	)	$	6,667
	Adjustments to reconcile net income (loss) to net cash (used) provided by operating activities
	Depreciation		2,776			2,827			2,830
	Net amortization of premiums and discounts on securities		3,882			4,740			2,555
	Other amortization and accretion		(172	)		20			(35	)
	Change in loans available for sale, net		22,189			(20,143	)		5,724
	Provision for loan losses, net		3,188			10,796			1,974
	Deferred tax benefit		(40,552	)		(7	)		(10	)
	Gain on sale of securities		(419	)		(7,619	)		(1,220	)
	Gain on sale of loans		(455	)		(816	)		(143	)
	Loss on sale or write down of foreclosed assets		1,295			3,548			3,812
	Writedown on loan available for sale		0			1,238			0
	Loss on disposition of equipment		1			774			58
	Stock based employee benefit expense		246			796			587
	Change in interest receivable		160			861			(561	)
	Change in interest payable		(27	)		(524	)		(2,258	)
	Change in prepaid expenses		4,562			2,601			2,748
	Change in accrued taxes		(102	)		(190	)		(145	)
	Change in other assets		792			(835	)		585
	Change in other liabilities		499			581			573
	Net cash provided (used) by operating activities	$	49,852		$	(2,062	)	$	23,741
	Supplemental disclosure of non cash investing activities
	Fair value adjustment to securities	$	(21,957	)	$	(3,405	)	$	5,530
	Transfers from loans to other real estate owned		5,087			14,067			35,500
	Transfers from loans to loans available for sale		379			10,321			0
	Matured securities recorded as a receivable		0			3,100			3,630
	Securities principal receivable recorded in other assets		159			0			0
	Transfer from securities held for investment to available for sale		13,818			0			0

Fair_Value_Tables

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements for Items Measured at Fair Value	'
	In addition, it includes guidance on identifying circumstances that indicate a transaction is not orderly. Under ASC 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at December 31, 2013 and 2012 included:
	(Dollars in thousands)		Fair Value		Quoted Prices in		Significant  Other		Significant  Other
			Measurements		Active Markets for		Observable		Unobservable
			December 31, 2013		Identical Assets		Inputs		Inputs
					Level 1		Level 2		Level 3
	Available for sale securities (3)		$	641,611	$	100	$	641,511	$	0
	Loans available for sale (4)			13,832		0		13,832		0
	Loans (1)			17,323		0		10,325		6,998
	OREO (2)			6,860		0		1,301		5,559
	(Dollars in thousands)		Fair Value		Quoted Prices in		Significant  Other		Significant  Other
			Measurements		Active Markets for		Observable		Unobservable
			December 31, 2012		Identical Assets		Inputs		Inputs
					Level 1		Level 2		Level 3
	Available for sale securities (3)		$	643,050	$	1,707	$	641,343	$	0
	Loans available for sale (4)			36,021		0		36,021		0
	Loans (1)			24,510		0		12,778		11,732
	OREO (2)			11,887		0		3,457		8,430
	-1	See Note E. Nonrecurring fair value adjustments to loans identified as impaired reflect full or partial write-downs that are based on the loan’s observable market price or current appraised value of the collateral in accordance with ASC 310.
	-2	Fair value is measure on a nonrecurring basis in accordance with ASC 360.
	-3	See Note D for further detail of recurring fair value basis of individual investment categories.
	-4	Recurring fair value basis determined using observable market data.
Summary of Carrying Value and Fair Value of Company's Financial Instruments	'
	The carrying amount and fair value of the Company’s other significant financial instruments that are not measured at fair value on a recurring basis in the balance sheet as of December 31 is as follows:
			Carrying Amount		Quoted Prices in		Significant  Other		Significant Other
			December 31, 2013		Active Markets for		observable		Unobservable Inputs
					Identical Assets		Inputs		Level 3
					Level 1		Level 2
	(In Thousands)
	Financial Assets
	Securities held to maturity		$	0	$	0	$	0	$	0
	Loans, net			1,266,816		0		0		1,272,893
	Financial Liabilities
	Deposits			1,806,045		0		0		1,807,183
	Borrowings			50,000		0		53,856		0
	Subordinated debt			53,610		0		42,888		0
			Carrying Amount		Quoted Prices in		Significant Other		Significant Other
			31-Dec-12		Active Markets for		Observable		Unobservable Inputs
					Identical Assets		Inputs		Level 3
					Level 1		Level 2
	(In Thousands)
	Financial Assets
	Securities held to maturity		$	13,818	$	0	$	14,542	$	0
	Loans, net			1,179,467		0		0		1,201,178
	Financial Liabilities
	Deposits			1,758,961		0		0		1,761,119
	Borrowings			50,000		0		55,604		0
	Subordinated debt			53,610		0		37,527		0

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share	'
	In 2013, 2012, and 2011, options and warrants to purchase 102,000, 87,000, and 225,000 shares , respectively, were antidilutive and accordingly were excluded in determining diluted earnings per share.
		Year Ended December 31
		Net			Shares		Per
		Income					Share
		(Loss)					Amount
		(Dollars in thousands,
		except per share data)
	2013
	Basic Earnings Per Share
	Income available to common shareholders	$	47,916			19,449,560	$	2.46
	Diluted Earnings Per Share
	Employee restricted stock (See Note J)					200,445
	Income available to common shareholders plus assumed conversions	$	47,916			19,650,005	$	2.44
	2012
	Basic and diluted Earnings Per Share
	Loss available to common shareholders	$	(4,458	)		18,748,757	$	(0.24	)
	2011
	Basic Earnings Per Share
	Income available to common shareholders	$	2,919			18,702,397	$	0.16
	Diluted Earnings Per Share
	Employee restricted stock (See Note J)					57,818
	Income available to common shareholders plus assumed conversions	$	2,919			18,760,215	$	0.16

Significant_Accounting_Policie2

Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013
	SecurityLoan
	Segment
	Plan
	Trust
Accounting Policies [Line Items]	'
Number of operating segment	1
Number of new loan production offices	5
Number of trusts excluded for issuance of trust preferred securities	5
Modified loan terms	'6 months
Loan and leases due period for discontinuation of interest accrual	'90 days
Consumer loans charge off period	'120 days
Number of stock option plans	4
Stock based compensation award vesting period for amortization	'5 years
Stock Options [Member]	'
Accounting Policies [Line Items]	'
Stock based compensation award vesting period for amortization	'5 years
Restricted Stock [Member]	'
Accounting Policies [Line Items]	'
Stock based compensation award vesting period for amortization	'5 years
Building [Member] | Maximum [Member]	'
Accounting Policies [Line Items]	'
Estimated useful lives of assets	'40 years
Building [Member] | Minimum [Member]	'
Accounting Policies [Line Items]	'
Estimated useful lives of assets	'25 years
Leasehold Improvements [Member] | Maximum [Member]	'
Accounting Policies [Line Items]	'
Estimated useful lives of assets	'25 years
Leasehold Improvements [Member] | Minimum [Member]	'
Accounting Policies [Line Items]	'
Estimated useful lives of assets	'5 years
Furniture and Equipment [Member] | Maximum [Member]	'
Accounting Policies [Line Items]	'
Estimated useful lives of assets	'12 years
Furniture and Equipment [Member] | Minimum [Member]	'
Accounting Policies [Line Items]	'
Estimated useful lives of assets	'3 years

Cash_Dividend_and_Loan_Restric1

Cash, Dividend and Loan Restrictions - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Banking And Thrift [Abstract]	'	'
Average reserve balance maintained with Federal Reserve Bank	$75.40	$67.50
Maximum amount available for transfer in form of loans	34	'
Dividend distribution by Seacoast National	$60.10	'

Securities_Amortized_Cost_and_

Securities - Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	$658,458	$637,940
Gross Unrealized Gains, Securities Available for Sale	3,156	7,011
Gross Unrealized Losses, Securities Available for Sale	-20,003	-1,901
Fair Value, Securities Available for Sale	641,611	643,050
Gross Amortized Cost, Securities Held for Investment	'	13,818
Gross Unrealized Gains, Securities Held for Investment	'	819
Gross Unrealized Losses, Securities Held for Investment	'	-95
Fair value, Securities Held for Investment	'	14,542
U.S. Treasury Securities and Obligations of U.S. Government Sponsored Entities [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	100	1,700
Gross Unrealized Gains, Securities Available for Sale	0	7
Gross Unrealized Losses, Securities Available for Sale	0	0
Fair Value, Securities Available for Sale	100	1,707
Mortgage-Backed Securities of U.S. Government Sponsored Entities [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	129,468	186,404
Gross Unrealized Gains, Securities Available for Sale	1,456	3,320
Gross Unrealized Losses, Securities Available for Sale	-4,189	-469
Fair Value, Securities Available for Sale	126,735	189,255
Collateralized Mortgage Obligations of U.S. Government Sponsored Entities [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	383,392	352,731
Gross Unrealized Gains, Securities Available for Sale	776	2,430
Gross Unrealized Losses, Securities Available for Sale	-14,747	-902
Fair Value, Securities Available for Sale	369,421	354,259
Gross Amortized Cost, Securities Held for Investment	'	4,687
Gross Unrealized Gains, Securities Held for Investment	'	0
Gross Unrealized Losses, Securities Held for Investment	'	-92
Fair value, Securities Held for Investment	'	4,595
Private Mortgage-Backed Securities [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	29,800	'
Gross Unrealized Gains, Securities Available for Sale	0	'
Gross Unrealized Losses, Securities Available for Sale	-226	'
Fair Value, Securities Available for Sale	29,574	'
Private Collateralized Mortgage Obligations [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	76,520	96,258
Gross Unrealized Gains, Securities Available for Sale	731	1,203
Gross Unrealized Losses, Securities Available for Sale	-413	-530
Fair Value, Securities Available for Sale	76,838	96,931
Gross Amortized Cost, Securities Held for Investment	'	1,278
Gross Unrealized Gains, Securities Held for Investment	'	33
Gross Unrealized Losses, Securities Held for Investment	'	0
Fair value, Securities Held for Investment	'	1,311
Collateralized Loan Obligations [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	32,592	'
Gross Unrealized Gains, Securities Available for Sale	0	'
Gross Unrealized Losses, Securities Available for Sale	-413	'
Fair Value, Securities Available for Sale	32,179	'
Obligations of State and Political Subdivisions [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	6,586	847
Gross Unrealized Gains, Securities Available for Sale	193	51
Gross Unrealized Losses, Securities Available for Sale	-15	0
Fair Value, Securities Available for Sale	6,764	898
Gross Amortized Cost, Securities Held for Investment	'	6,353
Gross Unrealized Gains, Securities Held for Investment	'	737
Gross Unrealized Losses, Securities Held for Investment	'	-3
Fair value, Securities Held for Investment	'	7,087
Other [Member]	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'
Gross Amortized Cost, Securities Held for Investment	'	1,500
Gross Unrealized Gains, Securities Held for Investment	'	49
Gross Unrealized Losses, Securities Held for Investment	'	0
Fair value, Securities Held for Investment	'	$1,549

Securities_Additional_Informat

Securities - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Proceeds from sale of securities	$67,330,000	$256,102,000	$52,689,000
Gains from sale of securities	792,000	7,833,000	1,239,000
Gross losses	373,000	214,000	19,000
Collateral underlying mortgage investments terms	'30- and 15-year fixed and 10/1 adjustable rate mortgage	'	'
Federal Home Loan Bank and Federal Reserve Bank stock	12,300,000	'	'
Fair value of cost method investment securities	12,300,000	'	'
Collateralized Mortgage Obligations of U.S. Government Sponsored Entities [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Aggregate losses	14,747,000	994,000	'
Fair value of collateralized loan obligations	332,969,000	154,650,000	'
Private Collateralized Mortgage Obligations [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Aggregate losses	413,000	530,000	'
Fair value of collateralized loan obligations	47,653,000	39,190,000	'
Mortgage Backed Securities and Collateralized Mortgage Obligations of US Government Sponsored Entities [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Aggregate losses	18,900,000	'	'
Fair value of collateralized loan obligations	401,400,000	'	'
Collateral Backed Securities Issued by Private Enterprises [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Aggregate losses	77,200,000	'	'
Fair value of collateralized loan obligations	0	'	'
Collateralized Loan Obligations [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Aggregate losses	413,000	'	'
Fair value of collateralized loan obligations	32,179,000	'	'
Carrying Amount [Member] | Collateralized Mortgage Obligations of U.S. Government Sponsored Entities [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Securities	105,655,000	'	'
Carrying Amount [Member] | Private Collateralized Mortgage Obligations [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Securities	195,200,000	'	'
Fair Value [Member] | Collateralized Mortgage Obligations of U.S. Government Sponsored Entities [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Securities	105,655,000	'	'
Fair Value [Member] | Private Collateralized Mortgage Obligations [Member]	'	'	'
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]	'	'	'
Securities	$195,200,000	'	'

Securities_Amortized_Cost_and_1

Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Available for Sale, Amortized Cost, Due in less than one year	$100	'
Available for Sale, Amortized Cost, Due after one year through five years	817	'
Available for Sale, Amortized Cost, Due after five years through ten years	8,438	'
Available for Sale, Amortized Cost, Due after ten years	29,923	'
Available for Sale, Amortized Cost, Total	39,278	'
Available for Sale, Fair Value, Due in less than one year	100	'
Available for Sale, Fair Value, Due after one year through five years	832	'
Available for Sale, Fair Value, Due after five years through ten years	8,349	'
Available for Sale, Fair Value, Due after ten years	29,762	'
Available for Sale, Fair Value, Total	39,043	'
Gross Amortized Cost, Securities Available for Sale	658,458	637,940
Fair Value, Available for Sale	641,611	643,050
Mortgage-Backed Securities of U.S. Government Sponsored Entities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	129,468	186,404
Fair Value, Available for Sale	126,735	189,255
Collateralized Mortgage Obligations of U.S. Government Sponsored Entities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	383,392	352,731
Fair Value, Available for Sale	369,421	354,259
Private Mortgage-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	29,800	'
Fair Value, Available for Sale	29,574	'
Private Collateralized Mortgage Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Gross Amortized Cost, Securities Available for Sale	76,520	96,258
Fair Value, Available for Sale	$76,838	$96,931

Securities_Schedule_of_Unreali

Securities - Schedule of Unrealized Loss and Fair Value on Investments (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Total temporarily impaired securities, Less than 12 months, Fair Value	$430,645	$234,315
Total temporarily impaired securities, Less than 12 months, Unrealized Losses	-15,561	-1,811
Total temporarily impaired securities,12 months or longer, Fair Value	80,825	13,939
Total temporarily impaired securities, 12 months or longer, Unrealized Losses	-4,442	-185
Total temporarily impaired securities, Fair Value	511,470	248,254
Total temporarily impaired securities, Unrealized Losses	-20,003	-1,996
Mortgage-Backed Securities of U.S. Government Sponsored Entities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	33,425	54,289
Less than 12 months, Unrealized Losses	-2,045	-469
12 months or longer, Fair Value	35,043	0
12 months or longer, Unrealized Losses	-2,144	0
Fair Value, Total	68,468	54,289
Unrealized Losses, Total	-4,189	-469
Collateralized Mortgage Obligations of U.S. Government Sponsored Entities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	287,312	150,057
Less than 12 months, Unrealized Losses	-12,450	-901
12 months or longer, Fair Value	45,657	4,593
12 months or longer, Unrealized Losses	-2,297	-93
Fair Value, Total	332,969	154,650
Unrealized Losses, Total	-14,747	-994
Private Mortgage-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	29,574	'
Less than 12 months, Unrealized Losses	-226	'
12 months or longer, Fair Value	0	'
12 months or longer, Unrealized Losses	0	'
Fair Value, Total	29,574	'
Unrealized Losses, Total	-226	'
Private Collateralized Mortgage Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	47,653	29,969
Less than 12 months, Unrealized Losses	-413	-441
12 months or longer, Fair Value	0	9,221
12 months or longer, Unrealized Losses	0	-89
Fair Value, Total	47,653	39,190
Unrealized Losses, Total	-413	-530
Collateralized Loan Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	32,179	'
Less than 12 months, Unrealized Losses	-413	'
12 months or longer, Fair Value	0	'
12 months or longer, Unrealized Losses	0	'
Fair Value, Total	32,179	'
Unrealized Losses, Total	-413	'
Obligations of State and Political Subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less than 12 months, Fair Value	502	0
Less than 12 months, Unrealized Losses	-14	0
12 months or longer, Fair Value	125	125
12 months or longer, Unrealized Losses	-1	-3
Fair Value, Total	627	125
Unrealized Losses, Total	($15)	($3)

Loans_Information_Relating_to_

Loans - Information Relating to Loans (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
NET LOAN BALANCES	$1,304,207	$1,226,081
Construction and Land Development [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
NET LOAN BALANCES	67,450	60,736
Commercial Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
NET LOAN BALANCES	520,382	486,828
Residential Real Estate [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
NET LOAN BALANCES	592,746	569,331
Other [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
NET LOAN BALANCES	280	353
Commercial and Financial [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
NET LOAN BALANCES	78,636	61,903
Consumer [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
NET LOAN BALANCES	$44,713	$46,930

Loans_Information_Relating_to_1

Loans - Information Relating to Loans (Parenthetical) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Deferred costs of loans	$2,618	$1,530

Loans_Additional_Information_D

Loans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Loans to directors and executive officers	$4,771,000	$4,891,000	'
New loans to directors and executive officers	2,194,000	'	'
Reduction in loans receivable from directors and executive officers	2,314,000	'	'
Loans pledged as collateral	50,000,000	50,000,000	'
Loan Portfolio consist of commercial loan and Commercial Real Estate Loans	50.00%	'	'
Loan Portfolio consist of Consumer and residential real estate loans	50.00%	'	'
Minimum source of repayment from third party	50.00%	'	'
Nonaccrual loans and loans past due ninety days	27,672,000	40,955,000	28,526,000
Reduction in interest income	$1,000,000	$1,900,000	$1,200,000
Maximum [Member] | Substandard [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Specific allowance on substandard loans, maximum percentage	30.00%	'	'

Loans_Contractual_Aging_of_Rec

Loans - Contractual Aging of Recorded Investment in Past Due Loans (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Accruing 30-59 Days Past Due	$2,047,000	$2,168,000	'
Accruing 60-89 Days Past Due	1,281,000	1,382,000	'
Accruing Greater Than 90 Days	160,000	1,000	'
Nonaccrual	27,672,000	40,955,000	28,526,000
Current	1,273,047,000	1,181,575,000	'
Total Financing Receivables	1,304,207,000	1,226,081,000	'
Construction and Land Development [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Accruing 30-59 Days Past Due	3,000	7,000	'
Accruing 60-89 Days Past Due	0	0	'
Accruing Greater Than 90 Days	0	0	'
Nonaccrual	1,302,000	1,342,000	'
Current	66,145,000	59,387,000	'
Total Financing Receivables	67,450,000	60,736,000	'
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Accruing 30-59 Days Past Due	684,000	832,000	'
Accruing 60-89 Days Past Due	345,000	5,000	'
Accruing Greater Than 90 Days	0	0	'
Nonaccrual	5,111,000	17,234,000	'
Current	514,242,000	468,757,000	'
Total Financing Receivables	520,382,000	486,828,000	'
Residential Real Estate [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Accruing 30-59 Days Past Due	974,000	1,179,000	'
Accruing 60-89 Days Past Due	909,000	1,377,000	'
Accruing Greater Than 90 Days	160,000	1,000	'
Nonaccrual	20,705,000	22,099,000	'
Current	569,998,000	544,675,000	'
Total Financing Receivables	592,746,000	569,331,000	'
Other [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Accruing 30-59 Days Past Due	0	0	'
Accruing 60-89 Days Past Due	0	0	'
Accruing Greater Than 90 Days	0	0	'
Nonaccrual	0	0	'
Current	280,000	353,000	'
Total Financing Receivables	280,000	353,000	'
Commercial and Financial [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Accruing 30-59 Days Past Due	353,000	41,000	'
Accruing 60-89 Days Past Due	0	0	'
Accruing Greater Than 90 Days	0	0	'
Nonaccrual	13,000	0	'
Current	78,270,000	61,862,000	'
Total Financing Receivables	78,636,000	61,903,000	'
Consumer [Member]	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'
Accruing 30-59 Days Past Due	33,000	109,000	'
Accruing 60-89 Days Past Due	27,000	0	'
Accruing Greater Than 90 Days	0	0	'
Nonaccrual	541,000	280,000	'
Current	44,112,000	46,541,000	'
Total Financing Receivables	$44,713,000	$46,930,000	'

Loans_Risk_Category_Class_of_L

Loans - Risk Category, Class of Loans and Recorded Investment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	$1,304,207	$1,226,081
Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	67,450	60,736
Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	520,382	486,828
Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	592,746	569,331
Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	78,636	61,903
Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	44,993	47,283
Pass [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	1,224,242	1,103,938
Pass [Member] | Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	63,186	54,994
Pass [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	485,268	414,023
Pass [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	554,681	527,891
Pass [Member] | Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	77,840	61,123
Pass [Member] | Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	43,267	45,907
Special Mention [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	8,899	16,577
Special Mention [Member] | Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	583	1,717
Special Mention [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	6,810	12,137
Special Mention [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	824	1,686
Special Mention [Member] | Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	382	587
Special Mention [Member] | Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	300	450
Substandard [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	18,257	22,665
Substandard [Member] | Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Substandard [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	15,886	22,180
Substandard [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	1,670	36
Substandard [Member] | Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	248	193
Substandard [Member] | Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	453	256
Doubtful [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Doubtful [Member] | Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Doubtful [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Doubtful [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Doubtful [Member] | Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Doubtful [Member] | Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Nonaccrual [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	27,672	40,955
Nonaccrual [Member] | Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	1,302	1,342
Nonaccrual [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	5,111	17,234
Nonaccrual [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	20,705	22,099
Nonaccrual [Member] | Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	13	0
Nonaccrual [Member] | Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	541	280
Pass-Troubled Debt Restructures [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	7,452	8,616
Pass-Troubled Debt Restructures [Member] | Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	1,838	2,103
Pass-Troubled Debt Restructures [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	5,584	6,513
Pass-Troubled Debt Restructures [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	30	0
Pass-Troubled Debt Restructures [Member] | Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Pass-Troubled Debt Restructures [Member] | Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	0	0
Troubled Debt Restructures [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	17,685	33,330
Troubled Debt Restructures [Member] | Construction and Land Development [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	541	580
Troubled Debt Restructures [Member] | Commercial Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	1,723	14,741
Troubled Debt Restructures [Member] | Residential Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	14,836	17,619
Troubled Debt Restructures [Member] | Commercial and Financial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	153	0
Troubled Debt Restructures [Member] | Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
Total Financing Receivables	$432	$390

Impaired_Loans_and_Allowance_f2

Impaired Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]	'	'	'	'	'	'	'
Newly identified TDRs	$500,000	$1,700,000	$4,100,000	$4,400,000	$10,700,000	'	'
Loan default period	'	'	'	'	'60 days	'	'
Accruing TDRs	25,100,000	'	'	'	25,100,000	41,900,000	'
Average recorded investment in impaired loans	'	'	'	'	66,603,000	96,439,000	119,528,000
Interest income on impaired loans	'	'	'	'	1,260,000	3,054,000	3,541,000
Expected future cash flows of impaired loans	'	'	'	'	1,100,000	1,000,000	1,100,000
Nonaccrual loans and loans past due ninety days	27,672,000	'	'	'	27,672,000	40,955,000	28,526,000
Accrual Loans	160,000	'	'	'	160,000	1,000	0
Commercial and Financial Loan [Member]	'	'	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'	'	'
Newly identified TDRs	'	'	'	'	200,000	'	'
Consumer [Member]	'	'	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'	'	'
Newly identified TDRs	'	'	'	'	100,000	'	'
Commercial Real Estate [Member]	'	'	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'	'	'
Newly identified TDRs	'	'	'	'	3,400,000	'	'
Average recorded investment in impaired loans	'	'	'	'	24,646,000	51,630,000	'
Interest income on impaired loans	'	'	'	'	423,000	1,737,000	'
Nonaccrual loans and loans past due ninety days	5,111,000	'	'	'	5,111,000	17,234,000	'
Residential Real Estate [Member]	'	'	'	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'	'	'	'
Newly identified TDRs	'	'	'	'	1,400,000	'	'
Average recorded investment in impaired loans	'	'	'	'	37,411,000	38,814,000	'
Interest income on impaired loans	'	'	'	'	647,000	1,151,000	'
Nonaccrual loans and loans past due ninety days	$20,705,000	'	'	'	$20,705,000	$22,099,000	'

Impaired_Loans_and_Allowance_f3

Impaired Loans and Allowance for Loan Losses - Modified Loans (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
	Contract
Financing Receivable, Modifications [Line Items]	'
Number of Contracts	22
Pre-Modification Outstanding Recorded Investment	$5,103
Post-Modification Outstanding Recorded Investment	4,554
Specific Reserve Recorded	0
Valuation Allowance Recorded	549
Construction and Land Development [Member]	'
Financing Receivable, Modifications [Line Items]	'
Number of Contracts	1
Pre-Modification Outstanding Recorded Investment	14
Post-Modification Outstanding Recorded Investment	13
Specific Reserve Recorded	0
Valuation Allowance Recorded	1
Residential Real Estate [Member]	'
Financing Receivable, Modifications [Line Items]	'
Number of Contracts	11
Pre-Modification Outstanding Recorded Investment	1,422
Post-Modification Outstanding Recorded Investment	1,254
Specific Reserve Recorded	0
Valuation Allowance Recorded	168
Commercial Real Estate [Member]	'
Financing Receivable, Modifications [Line Items]	'
Number of Contracts	7
Pre-Modification Outstanding Recorded Investment	3,421
Post-Modification Outstanding Recorded Investment	3,059
Specific Reserve Recorded	0
Valuation Allowance Recorded	362
Commercial and Financial [Member]	'
Financing Receivable, Modifications [Line Items]	'
Number of Contracts	2
Pre-Modification Outstanding Recorded Investment	154
Post-Modification Outstanding Recorded Investment	154
Specific Reserve Recorded	0
Valuation Allowance Recorded	0
Consumer [Member]	'
Financing Receivable, Modifications [Line Items]	'
Number of Contracts	1
Pre-Modification Outstanding Recorded Investment	92
Post-Modification Outstanding Recorded Investment	74
Specific Reserve Recorded	0
Valuation Allowance Recorded	$18

Impaired_Loans_and_Allowance_f4

Impaired Loans and Allowance for Loan Losses - Troubled Debt Restructurings Defaulted (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Contract	Contract	Contract
Residential Real Estate [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Contracts	1	7	1
Recorded Investment	$328	$913	$220
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Contracts	1	'	'
Recorded Investment	1,620	'	'
Construction and Land Development [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Contracts	'	'	1
Recorded Investment	'	'	37
Commercial and Financial [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Number of Contracts	'	'	1
Recorded Investment	'	'	$8

Impaired_Loans_and_Valuation_A

Impaired Loans and Valuation Allowance for Loan Losses - Company's Recorded Investments in Impaired Loans and the Related Valuation Allowances (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]	'	'	'
Recorded Investment, Total	$52,969,000	$82,901,000	'
Unpaid Principal Balance, Total	62,446,000	93,023,000	'
Related Valuation Allowance, Total	5,446,000	7,269,000	'
Average Recorded Investment, Total	66,603,000	96,439,000	119,528,000
Interest Income Recognized, Total	1,260,000	3,054,000	3,541,000
Construction and Land Development [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
With no related allowance, Recorded Investment	2,561,000	1,128,000	'
Recorded Investment, Total	3,681,000	4,025,000	'
With no related allowance, Unpaid Principal Balance	3,180,000	1,608,000	'
Unpaid Principal Balance, Total	4,377,000	4,549,000	'
With no related allowance, Related Valuation Allowance	0	0	'
With no related allowance, Average Recorded Investment	2,446,000	1,399,000	'
With no related allowance, Interest Income Recognized	102,000	5,000	'
With related allowance, Recorded Investment	1,120,000	2,897,000	'
With related allowance, Unpaid Principal Balance	1,197,000	2,941,000	'
Related Valuation Allowance, Total	149,000	230,000	'
With related allowance, Average Recorded Investment	1,347,000	3,539,000	'
Average Recorded Investment, Total	3,793,000	4,938,000	'
With related allowance, Interest Income Recognized	36,000	127,000	'
Interest Income Recognized, Total	138,000	132,000	'
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
With no related allowance, Recorded Investment	4,481,000	12,357,000	'
Recorded Investment, Total	12,418,000	38,487,000	'
With no related allowance, Unpaid Principal Balance	6,577,000	14,337,000	'
Unpaid Principal Balance, Total	14,623,000	40,985,000	'
With no related allowance, Related Valuation Allowance	0	0	'
With no related allowance, Average Recorded Investment	7,382,000	12,103,000	'
With no related allowance, Interest Income Recognized	28,000	433,000	'
With related allowance, Recorded Investment	7,937,000	26,130,000	'
With related allowance, Unpaid Principal Balance	8,046,000	26,648,000	'
Related Valuation Allowance, Total	638,000	2,264,000	'
With related allowance, Average Recorded Investment	17,264,000	39,527,000	'
Average Recorded Investment, Total	24,646,000	51,630,000	'
With related allowance, Interest Income Recognized	395,000	1,304,000	'
Interest Income Recognized, Total	423,000	1,737,000	'
Residential Real Estate [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
With no related allowance, Recorded Investment	12,366,000	15,463,000	'
Recorded Investment, Total	35,731,000	39,719,000	'
With no related allowance, Unpaid Principal Balance	17,372,000	22,022,000	'
Unpaid Principal Balance, Total	42,138,000	46,774,000	'
With no related allowance, Related Valuation Allowance	0	0	'
With no related allowance, Average Recorded Investment	14,512,000	12,019,000	'
With no related allowance, Interest Income Recognized	81,000	455,000	'
With related allowance, Recorded Investment	23,365,000	24,256,000	'
With related allowance, Unpaid Principal Balance	24,766,000	24,752,000	'
Related Valuation Allowance, Total	4,528,000	4,700,000	'
With related allowance, Average Recorded Investment	22,899,000	26,795,000	'
Average Recorded Investment, Total	37,411,000	38,814,000	'
With related allowance, Interest Income Recognized	566,000	696,000	'
Interest Income Recognized, Total	647,000	1,151,000	'
Commercial and Financial [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
With no related allowance, Recorded Investment	153,000	0	'
Recorded Investment, Total	166,000	0	'
With no related allowance, Unpaid Principal Balance	153,000	0	'
Unpaid Principal Balance, Total	166,000	0	'
With no related allowance, Related Valuation Allowance	0	0	'
With no related allowance, Average Recorded Investment	19,000	7,000	'
With no related allowance, Interest Income Recognized	9,000	0	'
With related allowance, Recorded Investment	13,000	0	'
With related allowance, Unpaid Principal Balance	13,000	0	'
Related Valuation Allowance, Total	13,000	0	'
With related allowance, Average Recorded Investment	1,000	34,000	'
Average Recorded Investment, Total	20,000	41,000	'
With related allowance, Interest Income Recognized	1,000	0	'
Interest Income Recognized, Total	10,000	0	'
Consumer [Member]	'	'	'
Financing Receivable, Impaired [Line Items]	'	'	'
With no related allowance, Recorded Investment	425,000	223,000	'
Recorded Investment, Total	973,000	670,000	'
With no related allowance, Unpaid Principal Balance	569,000	255,000	'
Unpaid Principal Balance, Total	1,142,000	715,000	'
With no related allowance, Related Valuation Allowance	0	0	'
With no related allowance, Average Recorded Investment	162,000	431,000	'
With no related allowance, Interest Income Recognized	19,000	12,000	'
With related allowance, Recorded Investment	548,000	447,000	'
With related allowance, Unpaid Principal Balance	573,000	460,000	'
Related Valuation Allowance, Total	118,000	75,000	'
With related allowance, Average Recorded Investment	571,000	585,000	'
Average Recorded Investment, Total	733,000	1,016,000	'
With related allowance, Interest Income Recognized	23,000	22,000	'
Interest Income Recognized, Total	$42,000	$34,000	'

Impaired_Loans_and_Valuation_A1

Impaired Loans and Valuation Allowance for Loan Losses - Activity in Allowance for Loan Losses (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Allowance, Beginning Balance	$22,104	$25,565	$37,744
Provision for Loan Losses	3,188	10,796	1,974
Charge-Offs	-6,784	-18,288	-16,446
Recoveries	1,560	4,031	2,293
Net Charge-Offs	-5,224	-14,257	-14,153
Allowance, Ending Balance	20,068	22,104	25,565
Construction and Land Development [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Allowance, Beginning Balance	1,134	1,883	7,214
Provision for Loan Losses	66	-478	-1,645
Charge-Offs	-604	-612	-4,739
Recoveries	212	341	1,053
Net Charge-Offs	-392	-271	-3,686
Allowance, Ending Balance	808	1,134	1,883
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Allowance, Beginning Balance	8,849	11,477	18,563
Provision for Loan Losses	-522	3,209	-3,777
Charge-Offs	-2,714	-8,539	-3,663
Recoveries	547	2,702	354
Net Charge-Offs	-2,167	-5,837	-3,309
Allowance, Ending Balance	6,160	8,849	11,477
Residential Real Estate [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Allowance, Beginning Balance	11,090	10,966	10,102
Provision for Loan Losses	3,273	7,767	7,833
Charge-Offs	-3,153	-8,381	-7,482
Recoveries	449	738	513
Net Charge-Offs	-2,704	-7,643	-6,969
Allowance, Ending Balance	11,659	11,090	10,966
Commercial and Financial [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Allowance, Beginning Balance	468	402	480
Provision for Loan Losses	-24	283	-379
Charge-Offs	-60	-346	0
Recoveries	326	129	301
Net Charge-Offs	266	-217	301
Allowance, Ending Balance	710	468	402
Consumer [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Allowance, Beginning Balance	563	837	1,385
Provision for Loan Losses	395	15	-58
Charge-Offs	-253	-410	-562
Recoveries	26	121	72
Net Charge-Offs	-227	-289	-490
Allowance, Ending Balance	$731	$563	$837

Impaired_Loans_and_Valuation_A2

Impaired Loans and Valuation Allowance for Loan Losses - Loan Portfolio and Related Allowance (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Individually Evaluated for Impairment, Carrying Value	$52,969	$82,901	'	'
Individually Evaluated for Impairment, Associated Allowance	5,446	7,269	'	'
Collectively Evaluated for Impairment, Carrying Value	1,251,238	1,143,180	'	'
Collectively Evaluated for Impairment, Associated Allowance	14,622	14,835	'	'
Carrying Value, Total	1,304,207	1,226,081	'	'
Associated Allowance, Total	20,068	22,104	25,565	37,744
Construction and Land Development [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Individually Evaluated for Impairment, Carrying Value	3,681	4,025	'	'
Individually Evaluated for Impairment, Associated Allowance	149	230	'	'
Collectively Evaluated for Impairment, Carrying Value	63,769	56,711	'	'
Collectively Evaluated for Impairment, Associated Allowance	659	904	'	'
Carrying Value, Total	67,450	60,736	'	'
Associated Allowance, Total	808	1,134	1,883	7,214
Commercial Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Individually Evaluated for Impairment, Carrying Value	12,418	38,487	'	'
Individually Evaluated for Impairment, Associated Allowance	638	2,264	'	'
Collectively Evaluated for Impairment, Carrying Value	507,964	448,341	'	'
Collectively Evaluated for Impairment, Associated Allowance	5,522	6,585	'	'
Carrying Value, Total	520,382	486,828	'	'
Associated Allowance, Total	6,160	8,849	11,477	18,563
Residential Real Estate [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Individually Evaluated for Impairment, Carrying Value	35,731	39,719	'	'
Individually Evaluated for Impairment, Associated Allowance	4,528	4,700	'	'
Collectively Evaluated for Impairment, Carrying Value	557,015	529,612	'	'
Collectively Evaluated for Impairment, Associated Allowance	7,131	6,390	'	'
Carrying Value, Total	592,746	569,331	'	'
Associated Allowance, Total	11,659	11,090	10,966	10,102
Commercial and Financial [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Individually Evaluated for Impairment, Carrying Value	166	0	'	'
Individually Evaluated for Impairment, Associated Allowance	13	0	'	'
Collectively Evaluated for Impairment, Carrying Value	78,470	61,903	'	'
Collectively Evaluated for Impairment, Associated Allowance	697	468	'	'
Carrying Value, Total	78,636	61,903	'	'
Associated Allowance, Total	710	468	402	480
Consumer [Member]	'	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'	'
Individually Evaluated for Impairment, Carrying Value	973	670	'	'
Individually Evaluated for Impairment, Associated Allowance	118	75	'	'
Collectively Evaluated for Impairment, Carrying Value	44,020	46,613	'	'
Collectively Evaluated for Impairment, Associated Allowance	613	488	'	'
Carrying Value, Total	44,993	47,283	'	'
Associated Allowance, Total	$731	$563	$837	$1,385

Bank_Premises_and_Equipment_Su

Bank Premises and Equipment - Summary of Bank Premises and Equipment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Cost	$71,785	$69,375
Accumulated Depreciation & Amortization	-37,280	-34,910
Net Carrying Value	34,505	34,465
Premises [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Cost	49,647	48,064
Accumulated Depreciation & Amortization	-20,518	-19,051
Net Carrying Value	29,129	29,013
Furniture and Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Cost	22,138	21,311
Accumulated Depreciation & Amortization	-16,762	-15,859
Net Carrying Value	$5,376	$5,452

Bank_Premises_and_Equipment_Su1

Bank Premises and Equipment - Summary of Bank Premises and Equipment (Parenthetical) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property Plant And Equipment [Abstract]	'	'
Land	$8,978	$8,978

Other_Intangible_Assets_Gross_

Other Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Intangible Asset (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$9,494	$9,494
Accumulated Amortization	-8,776	-7,993
Deposit Base [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	9,494	9,494
Accumulated Amortization	($8,776)	($7,993)

Other_Intangible_Assets_Intang

Other Intangible Assets - Intangible Amortization Expense (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible amortization expense	'	'	'
Identified intangible assets Deposit base	$783	$788	$847
Deposit Base [Member]	'	'	'
Intangible amortization expense	'	'	'
Identified intangible assets Deposit base	$783	$788	$847

Other_Intangible_Assets_Additi

Other Intangible Assets - Additional Information (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'
Amortization expense, deposit base intangible for 2014	$718
Amortization expense, deposit base intangible for 2015	0
Amortization expense, deposit base intangible for 2016	0
Amortization expense, deposit base intangible for 2017	0
Amortization expense, deposit base intangible for 2018	0
Amortization expense, deposit base intangible thereafter	$0

Borrowings_Additional_Informat

Borrowings - Additional Information (Detail) (USD $)

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Nov. 27, 2007

Sep. 25, 2007

Dec. 31, 2013

Jun. 29, 2007

Dec. 16, 2005

Mar. 31, 2005

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nov. 27, 2007

Sep. 25, 2007

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Quarters

Trust I [Member]

Trust II [Member]

Trust III [Member]

Trust I & II [Member]

Federal Home Loan Bank [Member]

Federal Home Loan Bank [Member]

Federal Home Loan Bank [Member]

Federal Reserve Bank Advances [Member]

Federal Reserve Bank Advances [Member]

Libor Rate [Member]

Libor Rate [Member]

Libor Rate [Member]

September 15, 2017 [Member]

November 27, 2017 [Member]

Trust I [Member]

Trust II [Member]

Trust III [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Securities sold under agreements to repurchase with maturities period

'

'

'Overnight to seven days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Advances received

'

'

'

'

'

'

'

'

'

'

$25,000,000

$25,000,000

'

'

'

'

'

'

'

'

Debt maturity date

27-Nov-17

15-Sep-17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed rates advances

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.64%

2.70%

Period of perpetual option conversion

'

'

'

'

'

'

'

'

'

'

'

'

'3 months

'

'

'

'

'

'

'

Secured lines of credit

'

'

894,106,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Junior subordinated debentures

'

'

'

'

20,619,000

20,619,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate subordinated debentures

'

'

'

'

41,238,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Junior subordinated debentures private sales

'

'

'

'

'

'

20,000,000

20,000,000

12,000,000

'

'

'

'

'

'

'

'

'

'

'

Additional Junior subordinated debentures

'

'

'

12,372,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis points on variable rate, percentage

'

'

'

'

'

'

1.75%

1.33%

1.35%

'

'

'

'

'

'

'

'

'

'

'

Adjust basis points on variable rate, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.00%

1.57%

1.59%

'

'

Trust Preferred securities redemption details

'

'

'The trust preferred securities have original maturities of thirty years, and may be redeemed without penalty on or after June 10, 2010, March 15, 2011, and September 15, 2012, respectively, upon approval of the Federal Reserve or upon occurrence of certain events affecting their tax or regulatory capital treatment.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Issued of common equity securities

'

'

'

'

'

'

619,000

619,000

372,000

'

'

'

'

'

'

'

'

'

'

'

Original debt maturity, period

'

'

'30 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Junior subordinated deferrable interest notes issued

'

'

'

'

'

'

'

'

12,400,000

41,200,000

'

'

'

'

'

'

'

'

'

'

Quarterly interest payment period for notes

'

'

20

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Trust preferred securities issued

'

'

'

'

'

'

'

'

'

'

'

'

'

$52,000,000

$52,000,000

'

'

'

'

'

Borrowings_Federal_Funds_Purch

Borrowings - Federal Funds Purchased and Securities Sold Under Agreements to Repurchase (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Disclosure [Abstract]	'	'	'
Maximum amount outstanding at any month end	$165,770	$149,316	$154,440
Weighted average interest rate at end of year	0.17%	0.21%	0.22%
Average amount outstanding	$155,222	$141,592	$106,495
Weighted average interest rate during the year	0.18%	0.24%	0.26%

Employee_Benefits_and_Stock_Co2

Employee Benefits and Stock Compensation - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 18, 2001
				Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Profit sharing and retirement plan service period	'1 year	'	'	'
Profit sharing and retirement contributions charged to operations	$807,000	$771,000	$361,000	'
Granted options and stock appreciation rights, Shares	50,000	'	'	'
Stock options vesting period	'5 years	'	'	'
Stock options or stock appreciation rights contractual life	'10 years	'	'	'
Repurchase program approval date	18-Sep-01	'	'	'
Share repurchase program, shares authorized	165,000	'	'	'
Maximum remaining number of repurchase Shares under repurchase plan	12,000	'	'	'
Number of repurchase program	'	'	'	1
Grant of stock options or SSARS	49,000	0	0	'
Risk free interest rate	2.50%	'	'	'
Dividends	0	'	'	'
Weighted average expected lives of stock options	'5 years	'	'	'
Volatility of common stock	26.50%	'	'	'
Forfeiture experience	22.00%	'	'	'
Windfall tax benefits realized from the exercise of stock options	0	'	'	'
Stock options exercised	0	'	'	'
Unrecognized compensation cost of stock options and SAR's	0	'	'	'
Recognized non-cash compensation expense before tax	246,000	796,000	588,000	'
Recognized non-cash compensation expense after tax	151,000	489,000	361,000	'
Compensation cost capitalized	0	'	'	'
Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock awards contractual life period	'5 years	'	'	'
Proportion of restricted stock unit	160.00%	'	'	'
Minimum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock awards contractual life period	'3 years	'	'	'
Proportion of restricted stock unit	0.00%	'	'	'
1991 Plan [Member] | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock shares authorized under stock plan	198,000	'	'	'
1996 Plan [Member] | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock shares authorized under stock plan	198,000	'	'	'
2000 Plan [Member] | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock shares authorized under stock plan	264,000	'	'	'
2008 Plan [Member] | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock shares authorized under stock plan	300,000	'	'	'
2013 Plan [Member] | Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Common stock shares authorized under stock plan	1,300,000	'	'	'
Stock Options [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock options vesting period	'5 years	'	'	'
Cash utilized for settle equity instruments granted under stock option awards	0	'	'	'
Stock Appreciation Rights (SARs) [Member] | 1991 Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted options and stock appreciation rights, Shares	166,000	'	'	'
Stock Appreciation Rights (SARs) [Member] | 1996 Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted options and stock appreciation rights, Shares	187,000	'	'	'
Stock Appreciation Rights (SARs) [Member] | 2000 Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted options and stock appreciation rights, Shares	158,000	'	'	'
Stock Appreciation Rights (SARs) [Member] | 2008 Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted options and stock appreciation rights, Shares	0	'	'	'
Stock Appreciation Rights (SARs) [Member] | 2013 Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted options and stock appreciation rights, Shares	49,000	'	'	'
Restricted Stock [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Issue of shares of restricted awards	9,000	'	'	'
Stock options vesting period	'5 years	'	'	'
Restricted stock awards vested	15,000	'	'	'
Restricted stock awards cancelled	6,000	'	'	'
Number of non-vested restricted stock award shares	168,000	'	'	'
Increase in non-vested restricted stock awards outstanding	0	'	'	'
Number of restricted stock awards cancelled in that period	12,000	'	'	'
Number of Non-Vested Stock Options	49,000	'	'	'
Cash utilized to settle equity instruments under stock awards	$0	'	'	'
Restricted Stock [Member] | 2008 Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Issue of shares of restricted awards	'	15,000	229,000	'
Issue of shares of restricted awards, price per share	'	$8.10	$7.10	'
Restricted Stock [Member] | 2013 Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Issue of shares of restricted awards	195,000	'	'	'
Issue of shares of restricted awards, price per share	$11	'	'	'
Restricted Stock Units (RSUs) [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Issue of shares of restricted awards	195,000	'	'	'
Restricted stock awards vested	0	'	'	'
Restricted stock awards cancelled	18,000	'	'	'
Number of non-vested restricted stock award shares	177,000	'	'	'

Employee_Benefits_and_Stock_Co3

Employee Benefits and Stock Compensation - Summary of Non-Vested Restricted Stock Awards and Units (Detail) (USD $)	12 Months Ended	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2013
	Restricted Stock [Member]	Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of non-vested restricted stock award shares	168,000	177,000
Remaining Unrecognized Compensation Cost	$559,000	$1,520,000
Weighted Average Remaining Recognition Period in Years	'2 years 7 months 21 days	'5 years

Employee_Benefits_and_Stock_Co4

Employee Benefits and Stock Compensation - Summary of Stock Option and SSARs Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Number of Shares, Beginning Balance	87,000	107,000	109,000
Number of Shares, Granted	49,000	0	0
Number of Shares, Exercised	0	0	0
Number of Shares, Expired	-28,000	0	0
Number of Shares, Cancelled	-6,000	-20,000	-2,000
Number of Shares, Ending Balance	102,000	87,000	107,000
Weighted Average Exercise Price, Beginning Balance	$105.60	$107.10	$106.05
Weighted Average Exercise Price, Granted	$11	$0	$0
Weighted Average Exercise Price, Exercised	$0	$0	$0
Weighted Average Exercise Price, Expired	$85.40	$0	$0
Weighted Average Exercise Price, Cancelled	$113.57	$113.30	$100.70
Weighted Average Exercise Price, Ending Balance	$65.10	$105.60	$107.10
Aggregate Intrinsic Value, Beginning Balance	$0	$0	$0
Aggregate Intrinsic Value, Ending Balance	$0	$0	$0
Minimum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Option or SSAR Exercise Price Per Share, Beginning Balance	$85.40	$85.40	$85.40
Option or SSAR Exercise Price Per Share, Cancelled	$111.10	$85.40	$85.40
Option or SSAR Exercise Price Per Share, Ending Balance	$11	$85.40	$85.40
Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Option or SSAR Exercise Price Per Share, Beginning Balance	$136.80	$136.80	$136.80
Option or SSAR Exercise Price Per Share, Granted	$11	$0	$0
Option or SSAR Exercise Price Per Share, Exercised	$0	$0	$0
Option or SSAR Exercise Price Per Share, Expired	$85.40	$0	$0
Option or SSAR Exercise Price Per Share, Cancelled	$136.80	$133.60	$136.80
Option or SSAR Exercise Price Per Share, Ending Balance	$133.60	$136.80	$136.80

Employee_Benefits_and_Stock_Co5

Employee Benefits and Stock Compensation - Summary of Stock Options Outstanding and Exercisable (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'	'
Options / SSARs Outstanding, Number of Shares Outstanding	102,000	87,000	107,000	109,000
Options / SSARs Outstanding, Weighted Average Remaining Contractual Life in Years	'5 years 10 months 28 days	'	'	'
Options / SSARs Exercisable (Vested), Number of Shares Exercisable	53,000	'	'	'
Options / SSARs Exercisable (Vested), Weighted Average Exercise Price	$115.48	'	'	'
Options / SSARs Exercisable (Vested), Weighted Average Remaining Contractual Life in Years	'2 years 6 months 29 days	'	'	'
Options / SSARs Exercisable (Vested), Aggregate Intrinsic Value	$0	'	'	'

Employee_Benefits_and_Stock_Co6

Employee Benefits and Stock Compensation - Summary of Non-Vested Stock Activity (Detail) (Equity Option [Member], USD $)	12 Months Ended
	Dec. 31, 2013
Equity Option [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of Non-Vested Stock Options	49,000
Weighted Average Remaining Contractual Life in Years	'9 years 6 months
Weighted Average Fair Value	$3.10
Remaining Unrecognized Compensation Cost	$107,000
Weighted Average Remaining Recognition Period in Years	'4 years 6 months 0 days

Lease_Commitments_Future_Minim

Lease Commitments - Future Minimum Lease Payments under Leases (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies Disclosure [Abstract]	'
2014	$3,304
2015	2,657
2016	2,552
2017	2,320
2018	1,032
Thereafter	11,332
Total	$23,197

Lease_Commitments_Additional_I

Lease Commitments - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Leases [Abstract]	'	'	'
Rent expense charged to operations	$3,878,000	$3,881,000	$4,010,000

Income_Taxes_Summary_of_Income

Income Taxes - Summary of Income Tax Expense Benefit (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current	'	'	'
Federal	$160	$0	$0
State	7	7	10
Deferred	'	'	'
Federal	-30,540	0	0
State	-10,012	-7	-10
Income tax provision (benefit)	($40,385)	$0	$0

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Examination [Line Items]	'	'	'
U.S. federal tax rate	35.00%	35.00%	35.00%
Net deferred tax assets	$66,858,000	$17,951,000	'
Valuation allowance	0	44,821,000	'
Period of cumulative loss position	'3 years	'	'
Improved classified asset ratio as a percentage of Tier 1 Capital and the allowance for loan losses	23.00%	'	'
Classified asset ratio as a percentage of Tier 1 Capital and the allowance for loan losses	54.10%	'	'
Federal tax loss carryforward	42,776,000	44,755,000	'
Deferred tax assets not related to net operating losses or credits	14,900,000	'	'
Alternative minimum tax credits	1,304,000	1,304,000	'
State tax loss carryforward	7,925,000	8,202,000	'
Accrued interest and penalties	0	'	'
Unrecognized income tax benefit or provision	0	'	'
Income taxes related to securities transactions	162,000	2,939,000	471,000
Minimum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Annual income before taxes	13,000,000	'	'
Maximum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Annual income before taxes	16,000,000	'	'
U.S. Federal [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Net deferred tax assets	52,600,000	'	'
Alternative minimum tax credits	1,300,000	'	'
U.S. Federal [Member] | Minimum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Net operating loss carryforwards expiration	'2029	'	'
U.S. Federal [Member] | Maximum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Net operating loss carryforwards expiration	'2032	'	'
State [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Net deferred tax assets	$14,300,000	'	'
State [Member] | Minimum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Net operating loss carryforwards expiration	'2027	'	'
State [Member] | Maximum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Net operating loss carryforwards expiration	'2032	'	'

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Expected Tax Benefit with Income Tax Benefit Relating to Loss before 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]	'	'	'
Tax rate applied to income (loss) before income taxes	$4,061	($249)	$2,333
Increase (decrease) resulting from the effects of:	'	'	'
Tax exempt interest on obligations of states and political subdivisions	-148	-118	-143
State income taxes	-259	-27	-173
Stock compensation	4	28	132
Expiration of capital loss carryforward	0	354	0
Other	38	53	281
Federal tax provision before valuation allowance	3,696	41	2,430
State tax provision before valuation allowance	740	76	494
Total income tax provision	4,436	117	2,924
Change in valuation allowance	-44,821	-117	-2,924
Income tax provision (benefit)	($40,385)	$0	$0

Income_Taxes_Summary_of_Net_De

Income Taxes - Summary of Net Deferred Tax Assets (Liabilities) (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Allowance for loan losses	$8,139	$8,964
Other real estate owned	899	1,521
Capital losses	0	26
Accrued stock compensation	528	492
Federal tax loss carryforward	42,776	44,755
State tax loss carryforward	7,925	8,202
Alternative minimum tax carryforward	1,304	1,304
Net unrealized securities losses	6,503	0
Deferred compensation	1,169	1,162
Other	273	990
Gross deferred tax assets	69,516	67,416
Less: Valuation allowance	0	-44,821
Deferred tax assets net of valuation allowance	69,516	22,595
Depreciation	-1,365	-1,514
Deposit base intangible	-233	-538
Net unrealized securities gains	0	-1,972
Accrued interest and fee income	-1,060	-620
Gross deferred tax liabilities	-2,658	-4,644
Net deferred tax assets	$66,858	$17,951

Income_Taxes_Summary_of_Income1

Income Taxes - Summary of Income Tax Examination Major Tax Jurisdictions along with Tax Year (Detail)	12 Months Ended
	Dec. 31, 2013
United States of America [Member]	'
Income Tax Examination [Line Items]	'
Income tax examination year under examination	'2010
Florida [Member]	'
Income Tax Examination [Line Items]	'
Income tax examination year under examination	'2008

Noninterest_Income_and_Expense2

Noninterest Income and Expenses - Summary of Noninterest Income and Expense (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
NONINTEREST INCOME	'	'	'
Service charges on deposit accounts	$6,711	$6,245	$6,262
Trust fees	2,711	2,279	2,111
Mortgage banking fees	4,173	3,710	2,140
Brokerage commissions and fees	1,631	1,071	1,122
Marine finance fees	1,189	1,111	1,209
Interchange income	5,404	4,501	3,808
Other deposit based EFT fees	342	336	318
Other	2,158	2,191	1,375
Noninterest Income	24,319	21,444	18,345
Loss on sale of commercial loan	0	-1,238	0
Securities gains, net	419	7,619	1,220
Total noninterest income	24,738	27,825	19,565
Noninterest expense	'	'	'
Salaries and wages	31,006	29,935	27,288
Employee benefits	7,327	7,710	5,875
Outsourced data processing costs	6,372	7,382	6,583
Telephone / data lines	1,253	1,178	1,179
Occupancy	7,178	8,146	7,627
Furniture and equipment	2,334	2,319	2,291
Marketing	2,339	3,095	2,917
Legal and professional fees	2,458	5,241	6,137
FDIC assessments	2,601	2,805	3,013
Amortization of intangibles	783	788	847
Asset disposition expense	740	1,459	2,281
Net loss on other real estate owned and repossessed assets	1,289	3,467	3,751
Other	9,472	9,023	7,974
Total noninterest expense	$75,152	$82,548	$77,763

Shareholders_Equity_Additional

Shareholders' Equity - Additional Information (Detail) (USD $)	0 Months Ended		1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended		12 Months Ended
	Dec. 13, 2013	30-May-12	Nov. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2008	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013
				Vote			Series A Preferred Stock [Member]	Series A Preferred Stock [Member]	Series A Preferred Stock [Member]	Stock Purchase Plan [Member]	Profit Sharing Plan [Member]
Class of Stock [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Reverse stock split	'1 for 5	'	'	'	'	'	'	'	'	'	'
Number of shares converted to one share common stock	5	'	'	'	'	'	'	'	'	'	'
Reserved common shares for issuance	'	'	'	'	'	'	'	'	'	300,000	148,500
Common shares issued as a result of employee participation, aggregate	'	'	'	'	'	'	'	'	'	170,066	34,590
Fixed rate cumulative perpetual preferred stock issued	'	'	'	'	'	'	2,000	'	2,000	'	'
Preferred stock par value per share	'	'	'	'	'	'	$0.10	$0.10	$0.10	'	'
Warrant expiry period	'	'	'	'	'	'	'	'10 years	'	'	'
Warrant to purchase shares of common stock	'	'	'	'	'	'	117,925	'	'	'	'
Common stock exercise price per share	'	'	'	'	'	'	$31.80	'	'	'	'
Preferred stock quarterly dividends rate	'	'	'	'	'	'	5.00%	'	'	'	'
Increase in dividend after five years	'	'	'	'	'	'	9.00%	'	'	'	'
Preferred stock, liquidation preference	'	'	'	'	'	'	$25,000	'	'	'	'
Duration after which, preferred stock dividend rate increases	'	'	'	'	'	'	'	'5 years	'	'	'
Preferred stock redemption value	'	'	'	50,000,000	'	'	'	50,000,000	'	'	'
Accrued dividends	'	'	'	'	'	'	'	319,000	'	'	'
Purchase of stock warrant	'	81,000	'	'	81,000	'	'	'	'	'	'
Stock offering	'	'	75,000,000	46,976,000	'	'	'	'	'	'	'
Common stock net issuance costs	'	'	47,000,000	46,977,000	0	0	'	'	'	'	'
Capital received from investor to get approval from Federal Reserve Bank	'	'	$25,000,000	'	'	'	'	'	'	'	'
Common stock, number of voting rights per share	'	'	'	1	'	'	'	'	'	'	'
Treasury stock, shares issued	'	'	'	0	0	'	'	'	'	'	'

Shareholders_Equity_Summary_of

Shareholders' Equity - Summary of Required Regulatory Capital (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Parent Company [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total Capital (to risk-weighted assets), Amount	$227,310	$227,428
Total Capital (to risk-weighted assets), Ratio	16.88%	18.33%
Total Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	107,757	99,247
Total Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	8.00%	8.00%
Tier 1 Capital (to risk-weighted assets), Amount	210,433	211,839
Tier 1 Capital (to risk-weighted assets), Ratio	15.62%	17.08%
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	53,878	49,624
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	4.00%	4.00%
Tier 1 Capital (to adjusted average assets), Amount	210,433	211,839
Tier 1 Capital (to adjusted average assets), Ratio	9.59%	10.04%
Tier 1 Capital (to adjusted average assets), Minimum for Capital Adequacy Purpose, Amount	92,234	84,377
Tier 1 Capital (to adjusted average assets), Minimum for Capital Adequacy Purpose, Ratio	4.00%	4.00%
Seacoast National Bank (A Wholly Owned Bank Subsidiary) [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total Capital (to risk-weighted assets), Amount	225,102	220,433
Total Capital (to risk-weighted assets), Ratio	16.74%	17.79%
Total Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	107,571	99,116
Total Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	8.00%	8.00%
Total Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	134,463	123,895
Total Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital (to risk-weighted assets), Amount	208,253	204,864
Tier 1 Capital (to risk-weighted assets), Ratio	15.49%	16.54%
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Amount	53,785	49,558
Tier 1 Capital (to risk-weighted assets), Minimum for Capital Adequacy Purpose, Ratio	4.00%	4.00%
Tier 1 Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	80,678	74,337
Tier 1 Capital (to risk-weighted assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Tier 1 Capital (to adjusted average assets), Amount	208,253	204,864
Tier 1 Capital (to adjusted average assets), Ratio	9.51%	9.72%
Tier 1 Capital (to adjusted average assets), Minimum for Capital Adequacy Purpose, Amount	87,636	84,312
Tier 1 Capital (to adjusted average assets), Minimum for Capital Adequacy Purpose, Ratio	4.00%	4.00%
Tier 1 Capital (to adjusted average assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$109,545	$105,389
Tier 1 Capital (to adjusted average assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%

Parent_Company_Only_Financial_2

Parent Company Only Financial Information - Summary of Balance Sheet (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
ASSETS	'	'	'	'
Cash	$48,561	$45,620	'	'
Other assets	95,651	54,223	'	'
TOTAL ASSETS	2,268,940	2,173,929	'	'
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'	'	'
Subordinated debt	53,610	53,610	'	'
Other liabilities	9,371	9,009	'	'
Shareholders' equity	198,604	165,546	170,077	166,299
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	2,268,940	2,173,929	'	'
Parent Company [Member]	'	'	'	'
ASSETS	'	'	'	'
Cash	919	4,067	'	'
Securities purchased under agreement to resell with subsidiary bank, maturing within 30 days	792	2,922	'	'
Investment in subsidiaries	250,033	212,182	'	'
Other assets	493	13	'	'
TOTAL ASSETS	252,237	219,184	'	'
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'	'	'
Subordinated debt	53,610	53,610	'	'
Other liabilities	23	28	'	'
Shareholders' equity	198,604	165,546	'	'
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$252,237	$219,184	'	'

Parent_Company_Only_Financial_3

Parent Company Only Financial Information - Summary of Statements of Income (Loss) (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income	'	'	'
Total interest income	$70,763	$73,287	$80,792
Interest expense	5,557	8,478	13,953
Other expenses	9,472	9,023	7,974
Income tax benefit	-40,385	0	0
NET INCOME (LOSS)	51,989	-710	6,667
Parent Company [Member]	'	'	'
Income	'	'	'
Dividends from subsidiary Bank	0	0	0
Interest/other	28	29	79
Total interest income	28	29	79
Interest expense	958	1,057	1,152
Other expenses	450	575	405
Loss before income tax benefit and equity in undistributed income of subsidiaries	-1,380	-1,603	-1,478
Income tax benefit	-2,281	0	0
Income (loss) before equity in undistributed income of subsidiaries	901	-1,603	-1,478
Equity in undistributed income of subsidiaries	51,088	893	8,145
NET INCOME (LOSS)	$51,989	($710)	$6,667

Parent_Company_Only_Financial_4

Parent Company Only Financial Information - Summary of Statement 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	'	'	'
Interest received	$73,849	$78,119	$81,904
Interest paid	-5,584	-9,003	-16,211
Income taxes received (paid)	-157	2	-9
Net cash provided (used) by operating activities	49,852	-2,062	23,741
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Net cash (used) by investing activities	-89,155	-28,421	-180,869
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Issuance of common stock, net of related expense	46,977	0	0
Repurchase of stock warrants, including related expense	0	-81	0
Stock based employment plans	190	196	123
Redemption of preferred stock	-50,000	0	0
Dividends paid on preferred shares	-2,819	-2,500	-6,875
Net cash provided by financing activities	55,940	38,389	112,804
Net change in cash	16,637	7,906	-44,324
Cash and cash equivalents at beginning of year	174,987	167,081	211,405
Cash and cash equivalents at end of year	191,624	174,987	167,081
RECONCILIATION OF INCOME (LOSS) TO CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	'	'	'
NET INCOME (LOSS)	51,989	-710	6,667
Adjustments to reconcile net income (loss) to net cash used in operating activities:	'	'	'
Net change in other assets	792	-835	585
Net cash provided (used) by operating activities	49,852	-2,062	23,741
Parent Company [Member]	'	'	'
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'
Interest received	5	7	9
Interest paid	-957	-1,045	-3,288
Dividends received	23	22	70
Income taxes received (paid)	1,797	-32	-67
Other	-494	-703	-420
Net cash provided (used) by operating activities	374	-1,751	-3,696
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Decrease in securities purchased under agreement to resell, maturing within 30 days, net	2,130	422	285
Net cash (used) by investing activities	2,130	422	285
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Issuance of common stock, net of related expense	46,977	0	0
Repurchase of stock warrants, including related expense	0	-81	0
Stock based employment plans	190	196	123
Redemption of preferred stock	-50,000	0	0
Dividends paid on preferred shares	-2,819	-2,500	-6,875
Net cash provided by financing activities	-5,652	-2,385	-6,752
Net change in cash	-3,148	-3,714	-10,163
Cash and cash equivalents at beginning of year	4,067	7,781	17,944
Cash and cash equivalents at end of year	919	4,067	7,781
RECONCILIATION OF INCOME (LOSS) TO CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	'	'	'
NET INCOME (LOSS)	51,989	-710	6,667
Adjustments to reconcile net income (loss) to net cash used in operating activities:	'	'	'
Equity in undistributed income of subsidiaries	-51,088	-893	-8,145
Net change in other assets	-527	-148	-2,218
Net cash provided (used) by operating activities	$374	($1,751)	($3,696)

Contingent_Liabilities_and_Com2

Contingent Liabilities and Commitments with Off-Balance Sheet Risk - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Commitment to extend credit amount	$135,056,000	$118,887,000
Unfunded limited partner equity commitment	3,746,000	4,000,000
Renewal period of contract for outsourced data services	'	'5 years 6 months
Minimum [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Commitment to extend credit fixed interest rate	3.50%	'
Maximum [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Commitment to extend credit fixed interest rate	5.88%	'
Secured Credit Risk [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Secured amount of commitment to extend credit	77,565,000	'
Secured [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Commitments to extend credit	3,187,000	3,629,000
Commitments to Extend Credit [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Commitment to extend credit amount	135,056,000	'
Fixed Interest Rate Credit Risk [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Commitments to extend credit fixed interest rate	$9,454,000	'

Contingent_Liabilities_and_Com3

Contingent Liabilities and Commitments with Off-Balance Sheet Risk - Summary of Financial Instruments with Off-Balance-Sheet Risk (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]	'	'
Commitments to extend credit	$135,056,000	$118,887,000
Unfunded limited partner equity commitment	3,746,000	4,000,000
Secured [Member]	'	'
Loss Contingencies [Line Items]	'	'
Standby letters of credit and financial guarantees written	2,722,000	2,509,000
Unsecured [Member]	'	'
Loss Contingencies [Line Items]	'	'
Standby letters of credit and financial guarantees written	$8,000	$8,000

Contingent_Liabilities_and_Com4

Contingent Liabilities and Commitments with Off-Balance Sheet Risk - Summary of Minimum Future Contractual Obligation Under Renewal of Contract (Detail) (USD $)	Dec. 31, 2012
In Thousands, unless otherwise specified
Commitments And Contingencies Disclosure [Abstract]	'
2013	$11,016
2014	8,568
2015	6,120
2016	$3,672

Supplemental_Disclosures_for_C2

Supplemental Disclosures for Consolidated Statements of Cash Flows - Reconciliation of Net Income (Loss) to Net Cash Provided by Operating Activities (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Cash Flows [Abstract]	'	'	'
NET INCOME (LOSS)	$51,989	($710)	$6,667
Adjustments to reconcile net income (loss) to net cash (used) provided by operating activities	'	'	'
Depreciation	2,776	2,827	2,830
Net amortization of premiums and discounts on securities	3,882	4,740	2,555
Other amortization and accretion	-172	20	-35
Change in loans available for sale, net	22,189	-20,143	5,724
Provision for loan losses, net	3,188	10,796	1,974
Deferred tax benefit	-40,552	-7	-10
Gain on sale of securities	-419	-7,619	-1,220
Gain on sale of loans	-455	-816	-143
Loss on sale or write down of foreclosed assets	1,295	3,548	3,812
Writedown on loan available for sale	0	1,238	0
Loss on disposition of equipment	1	774	58
Stock based employee benefit expense	190	196	123
Change in interest receivable	160	861	-561
Change in interest payable	-27	-524	-2,258
Change in prepaid expenses	4,562	2,601	2,748
Change in accrued taxes	-102	-190	-145
Net change in other assets	792	-835	585
Change in other liabilities	499	581	573
Net cash provided (used) by operating activities	49,852	-2,062	23,741
Supplemental disclosure of non cash investing activities	'	'	'
Fair value adjustment to securities	-21,957	-3,405	5,530
Transfers from loans to other real estate owned	5,087	14,067	35,500
Transfers from loans to loans available for sale	379	10,321	0
Matured securities recorded as a receivable	0	3,100	3,630
Securities principal receivable recorded in other assets	159	0	0
Transfer from securities held for investment to available for sale	$13,818	$0	$0

Fair_Value_Fair_Value_Measurem

Fair Value - Fair Value Measurements for Items Measured at Fair Value (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
OREO	$6,860	$11,887
Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale securities	641,611	643,050
Loans available for sale	13,832	36,021
Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	17,323	24,510
OREO	6,860	11,887
Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale securities	100	1,707
Loans available for sale	0	0
Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	0	0
OREO	0	0
Significant Other Observable Inputs Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale securities	641,511	641,343
Loans available for sale	13,832	36,021
Significant Other Observable Inputs Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	10,325	12,778
OREO	1,301	3,457
Significant Other Unobservable Inputs Level 3 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available for sale securities	0	0
Loans available for sale	0	0
Significant Other Unobservable Inputs Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans	6,998	11,732
OREO	$5,559	$8,430

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Range of capitalization rates utilized to determine fair value	8.50%
Transfers between level 1 and level 2	$0
Transfers out consisted of charge-offs	1,300,000
Recorded sales	0
Fair Value, Measurements, Nonrecurring [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Loans classified as level 3 transfers in	2,200,000
Loans classified as level 3 transfers out	0
Other real estate owned and other reductions	5,600,000
Other real estate owned and other reductions classified as level 3 transfers out	5,000,000
Valuation write-downs	500,000
Other real estate revenue	4,500,000
Other real estate owned and other reductions classified as level three transfers in	$2,200,000

Fair_Value_Summary_of_Carrying

Fair Value - Summary of Carrying Value and Fair Value of Company's Financial Instruments (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial Assets	'	'
Securities held to maturity	'	$14,542
Loans, net	1,284,139	1,203,977
Carrying Amount [Member]	'	'
Financial Assets	'	'
Securities held to maturity	0	13,818
Loans, net	1,266,816	1,179,467
Financial Liabilities	'	'
Deposits	1,806,045	1,758,961
Borrowings	50,000	50,000
Subordinated debt	53,610	53,610
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]	'	'
Financial Assets	'	'
Securities held to maturity	0	0
Loans, net	0	0
Financial Liabilities	'	'
Deposits	0	0
Borrowings	0	0
Subordinated debt	0	0
Significant Other Observable Inputs Level 2 [Member]	'	'
Financial Assets	'	'
Securities held to maturity	0	14,542
Loans, net	0	0
Financial Liabilities	'	'
Deposits	0	0
Borrowings	53,856	55,604
Subordinated debt	42,888	37,527
Significant Other Unobservable Inputs Level 3 [Member]	'	'
Financial Assets	'	'
Securities held to maturity	0	0
Loans, net	1,272,893	1,201,178
Financial Liabilities	'	'
Deposits	1,807,183	1,761,119
Borrowings	0	0
Subordinated debt	$0	$0

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'
Reverse stock split	'1 for 5	'1 for 5	'1 for 5
Shares excluded from computation of diluted EPS	102,000	87,000	225,000

Earnings_Per_Share_Schedule_of

Earnings Per Share - Schedule of Earnings Per Share (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'
Income available to common shareholders	$47,916	($4,458)	$2,919
Income available to common shareholders plus assumed conversions	47,916	'	2,919
Loss available to common shareholders	'	($4,458)	'
Income available to common shareholders, Shares	19,449,560	18,748,757	18,702,397
Employee restricted stock (See Note J), Shares	200,445	'	57,818
Income available to common shareholders plus assumed conversions, Shares	19,650,005	18,748,757	18,760,215
Loss available to common shareholders, Shares	'	18,748,757	'
Income available to common shareholders, Per Share	$2.46	($0.24)	$0.16
Income available to common shareholders plus assumed conversions, Per Share	$2.44	($0.24)	$0.16
Loss available to common shareholders, Per Share	'	($0.24)	'