Cardinal Financial (CFNL) 10-K 14 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 13, 2014	Jun. 30, 2013
Document and Entity Information	'	'	'
Entity Registrant Name	'CARDINAL FINANCIAL CORP	'	'
Entity Central Index Key	'0001060523	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Public Float	'	'	$427,113,377
Entity Common Stock, Shares Outstanding	'	31,958,577	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

CONSOLIDATED_STATEMENTS_OF_CON

CONSOLIDATED STATEMENTS OF CONDITION (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$18,285	$17,552
Federal funds sold	10,924	49,588
Total cash and cash equivalents	29,209	67,140
Investment securities available-for-sale	349,319	271,903
Investment securities held-to-maturity (market value of $5,527 and $9,019 at December 31, 2013 and December 31, 2012, respectively)	6,477	11,366
Investment securities - trading	3,890	3,151
Total investment securities	359,686	286,420
Other investments	19,068	14,302
Loans held for sale	373,993	785,751
Loans receivable, net of deferred fees and costs	2,040,168	1,803,429
Allowance for loan losses	-27,864	-27,400
Loans receivable, net	2,012,304	1,776,029
Premises and equipment, net	20,389	19,192
Deferred tax asset, net	5,395	'
Goodwill and intangibles, net	10,144	10,292
Bank-owned life insurance	32,063	31,652
Prepaid FDIC insurance premiums	'	2,165
Accrued interest receivable and other assets	31,979	46,244
Total assets	2,894,230	3,039,187
Liabilities and Shareholders' Equity	'	'
Non-interest bearing deposits	433,749	351,815
Interest bearing deposits	1,625,110	1,891,943
Total deposits	2,058,859	2,243,758
Other borrowed funds	475,232	392,275
Mortgage funding checks	6,528	51,679
Deferred tax liability, net	'	1,946
Escrow liabilities	1,572	4,629
Accrued interest payable and other liabilities	31,507	36,834
Total liabilities	2,573,698	2,731,121
Common stock, $1 par value; 50,000,000 Shares authorized; 30,332,685 and 30,226,330 Shares issued and outstanding at December 31, 2013 and December 31, 2012, respectively	30,333	30,226
Additional paid-in capital	174,001	172,021
Retained earnings	111,323	92,777
Accumulated other comprehensive income, net	4,875	13,042
Total shareholders' equity	320,532	308,066
Total liabilities and shareholders' equity	$2,894,230	$3,039,187

CONSOLIDATED_STATEMENTS_OF_CON1

CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
CONSOLIDATED STATEMENTS OF CONDITION	'	'
Investment securities held-to-maturity, market value (in dollars)	$5,527	$9,019
Common stock, par value (in dollars per share)	$1	$1
Common stock, Shares authorized	50,000,000	50,000,000
Common stock, Shares issued	30,332,685	30,226,330
Common stock, Shares outstanding	30,332,685	30,226,330

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest income:	'	'	'
Loans receivable	$86,152	$84,615	$78,237
Loans held for sale	16,695	19,017	10,767
Federal funds sold	266	173	88
Investment securities available-for-sale	10,481	10,673	13,222
Investment securities held-to-maturity	189	305	440
Other investments	332	267	124
Total interest income	114,115	115,050	102,878
Interest expense:	'	'	'
Deposits	13,016	14,839	13,560
Other borrowed funds	8,754	9,208	10,156
Total interest expense	21,770	24,047	23,716
Net interest income	92,345	91,003	79,162
Provision for loan losses	-32	7,123	6,910
Net interest income after provision for loan losses	92,377	83,880	72,252
Non-interest income:	'	'	'
Service charges on deposit accounts	1,992	1,914	1,767
Loan fees	1,447	1,599	1,326
Title insurance & other income	987	2,489	1,408
Investment fee income	1,337	2,623	2,546
Realized and unrealized gains on mortgage banking activities	21,615	47,794	20,529
Net realized gains on investment securities available-for-sale	'	'	2,397
Net realized gains on investment securities-trading	68	158	144
Management fee income	1,981	4,082	3,406
Income from bank-owned life insurance	411	3,072	796
Gain (loss) on sale of real estate	30	-333	'
Other income (loss)	43	-6	14
Total non-interest income	29,911	63,392	34,333
Non-interest expense:	'	'	'
Salary and benefits	41,523	39,370	28,707
Occupancy	8,389	7,186	6,032
Professional fees	3,765	4,209	3,955
Depreciation	3,196	2,669	2,517
Data processing and communications	4,720	4,427	4,117
Advertising and marketing	4,688	5,197	3,199
FDIC insurance assessment	1,391	1,336	1,387
Mortgage loan repurchases and settlements	-49	962	670
Bank franchise taxes	2,836	2,388	2,089
Amortization of intangibles	148	198	198
Loss on extinguishment of debt	'	'	2,271
Impairment of pooled trust preferred securities	300	'	'
Impairment of other real estate owned	'	'	911
Merger and acquisition expense	464	'	'
Other operating expenses	13,232	11,375	8,412
Total non-interest expense	84,603	79,317	64,465
Income before income taxes	37,685	67,955	42,120
Provision for income taxes	12,175	22,658	14,122
Net income	$25,510	$45,297	$27,998
Earnings per common share - basic (in dollars per share)	$0.83	$1.53	$0.95
Earnings per common share - diluted (in dollars per share)	$0.82	$1.51	$0.94
Weighted-average common shares outstanding - basic (in shares)	30,687	29,654	29,401
Weighted-average common shares outstanding - diluted (in shares)	31,077	29,996	29,784

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	'	'	'
Net income	$25,510	$45,297	$27,998
Unrealized gain on available-for-sale investment securities:	'	'	'
Unrealized holding gain (loss) arising during the year, net of tax benefit of $5.1 million in 2013, net of tax expense of $391 thousand in 2012, and net of tax expense of $4.5 million in 2011	-9,276	741	9,644
Less: reclassification adjustment for net gains included in net income, net of tax expense of $0 in 2013, $0 in 2012, and $804 thousand in 2011	'	'	-1,593
Total unrealized gain (loss) on available-for-sale investment securities	-9,276	741	8,051
Unrealized gain (loss) on derivative instruments designated as cash flow hedges, net of tax expense of $589 thousand in 2013, net of tax expense of $470 thousand in 2012, and net of tax benefit of $572 thousand in 2011	1,109	785	-960
Comprehensive income	$17,343	$46,823	$35,089

CONSOLIDATED_STATEMENTS_OF_COM1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	'	'	'
Unrealized holding gain (loss) arising during the period, tax expense (benefit)	($5,100)	$391	$4,500
Reclassification adjustment for net gains included in net income, tax expense	0	0	804
Unrealized gain (loss) on derivative instruments designated as cash flow hedges, tax expense (benefit)	$589	$470	($572)

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2010	$222,902	$28,770	$160,859	$28,848	$4,425
Balance (in shares) at Dec. 31, 2010	'	28,770,000	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'
Stock options exercised	2,627	429	2,198	'	'
Stock options exercised (in shares)	'	429,000	'	'	'
Stock compensation expense, net of tax benefit	673	'	673	'	'
Dividends on common stock of $0.23, $0.20 and $0.12 per share for the years ended 2013, 2012 and 2011, respectively	-3,474	'	'	-3,474	'
Change in accumulated other comprehensive income	7,091	'	'	'	7,091
Net income	27,998	'	'	27,998	'
Balance at Dec. 31, 2011	257,817	29,199	163,730	53,372	11,516
Balance (in shares) at Dec. 31, 2011	'	29,199,000	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'
Stock options exercised	9,090	1,027	8,063	'	'
Stock options exercised (in shares)	'	1,027,000	'	'	'
Stock compensation expense, net of tax benefit	228	'	228	'	'
Dividends on common stock of $0.23, $0.20 and $0.12 per share for the years ended 2013, 2012 and 2011, respectively	-5,892	'	'	-5,892	'
Change in accumulated other comprehensive income	1,526	'	'	'	1,526
Net income	45,297	'	'	45,297	'
Balance at Dec. 31, 2012	308,066	30,226	172,021	92,777	13,042
Balance (in shares) at Dec. 31, 2012	'	30,226,000	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'
Stock options exercised	1,084	107	977	'	'
Stock options exercised (in shares)	'	107,000	'	'	'
Stock compensation expense, net of tax benefit	1,003	'	1,003	'	'
Dividends on common stock of $0.23, $0.20 and $0.12 per share for the years ended 2013, 2012 and 2011, respectively	-6,964	'	'	-6,964	'
Change in accumulated other comprehensive income	-8,167	'	'	'	-8,167
Net income	25,510	'	'	25,510	'
Balance at Dec. 31, 2013	$320,532	$30,333	$174,001	$111,323	$4,875
Balance (in shares) at Dec. 31, 2013	'	30,333,000	'	'	'

CONSOLIDATED_STATEMENTS_OF_CHA1

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY	'	'	'
Dividends on common stock (in dollars per share)	$0.23	$0.20	$0.12

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$25,510	$45,297	$27,998
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'	'
Depreciation	3,196	2,669	2,517
Amortization of premiums, discounts and intangibles	137	34	292
Impairment of pooled trust preferred securities	300	'	'
Provision for loan losses	-32	7,123	6,910
Loans held for sale originated	-5,782,912	-6,577,775	-3,893,935
Proceeds from the sale of loans held for sale	6,216,285	6,369,318	3,591,011
Realized and unrealized gains on mortgage banking activities	-21,615	-47,794	-20,529
Proceeds from sale, maturity and call of investment securities-trading	'	'	743
Purchase of investment securities-trading	-1,707	-1,174	-1,182
Unrealized (gain) loss on sale of investments securities-trading	-68	-158	-144
Gain on sale of investment securities available-for-sale	'	'	-2,397
(Gain) loss on sale of other assets	'	49	'
Decrease in fair value of other real estate owned	'	'	911
(Gain) Loss on sales of other real estate owned	-30	333	'
Stock compensation expense, net of tax benefits	1,003	228	673
Provision for deferred income taxes	-2,866	5,817	1,086
Increase in cash surrender value of bank-owned life insurance	-411	-3,072	-796
(Increase) decrease in accrued interest receivable, other assets and deferred tax asset	15,391	-19,125	-12,952
Increase (decrease) in accrued interest payable, escrow liabilities and other liabilities	-6,901	10,390	11,339
Net cash provided by (used in) operating activities	445,280	-207,840	-288,455
Cash flows from investing activities:	'	'	'
Net purchases of premises and equipment	-4,393	-3,712	-5,102
Proceeds from the sale of fixed assets	'	1,104	'
Proceeds from maturity and call of investment securities available-for-sale	11,484	'	970
Proceeds from sale of mortgage-backed securities available-for-sale	'	'	40,384
Proceeds from maturity and call of investment securities held-to-maturity	'	'	5,618
Proceeds from sale of other investments	255	3,608	24
Proceeds from bank-owned life insurance	'	6,574	'
Purchase of investment securities available-for-sale	-66,372	-22,810	-18,266
Purchase of mortgage-backed securities available-for-sale	-67,834	'	-62,538
Purchase of other investments	-5,021	-790	-675
Redemptions of investment securities available-for-sale	35,902	47,761	49,265
Redemptions of investment securities held-to-maturity	1,790	1,546	3,325
Proceeds from the sale of other real estate owned	'	5,839	531
Net increase in loans receivable, net of deferred fees and costs	-236,213	-180,555	-230,779
Net cash used in investing activities	-330,402	-141,435	-217,243
Cash flows from financing activities:	'	'	'
Net increase (decrease) in deposits	-184,899	468,498	371,535
Net increase (decrease) in other borrowed funds	-17,043	-38,110	108,070
Net increase (decrease) in mortgage funding checks	-45,151	25,690	25,327
Proceeds from FHLB advances	100,000	55,000	110,000
Repayments of FHLB advances	'	-135,000	-97,271
Stock options exercised	1,084	9,090	2,627
Excess tax benefit from stock option exercises	164	'	155
Dividends on common stock	-6,964	-5,892	-3,474
Net cash provided by (used in) financing activities	-152,809	379,276	516,969
Net increase (decrease) in cash and cash equivalents	-37,931	30,001	11,271
Cash and cash equivalents at beginning of year	67,140	37,139	25,868
Cash and cash equivalents at end of year	29,209	67,140	37,139
Supplemental disclosure of cash flow information:	'	'	'
Cash paid during the year for interest	21,823	24,549	24,189
Cash paid for income taxes	14,964	18,262	13,618
Supplemental schedule of noncash investing and financing activities:	'	'	'
Unsettled purchases of investment securities available-for-sale	2,050	'	'
Transfer of investment securities from held-to-maturity to available-for-sale	2,795	'	'
Transfer of loans to other real estate owned	'	$3,126	$3,238

Organization

Organization	12 Months Ended
	Dec. 31, 2013
Organization	'
Organization	'
	(1) Organization
	Cardinal Financial Corporation (the "Company" or "Cardinal") is incorporated under the laws of the Commonwealth of Virginia as a financial holding company whose activities consist of investment in its wholly-owned subsidiaries. The principal operating subsidiary of the Company is Cardinal Bank (the "Bank"), a state-chartered institution and its subsidiary, George Mason Mortgage, LLC ("George Mason"), a mortgage banking company based in Fairfax, Virginia. The Company had a second mortgage subsidiary, Cardinal First Mortgage, LLC ("Cardinal First") also based in Fairfax, Virginia, but as of June 30, 2013, this subsidiary merged into George Mason. In addition to the Bank, the Company has one nonbank subsidiary, Cardinal Wealth Services, Inc. ("CWS"), an investment services subsidiary. As of June 30, 2013, the remaining operations of the Bank's trust division, Cardinal Trust and Investment Services, merged into CWS. Also as of June 30, 2013, Wilson/Bennett Capital Management, Inc., formerly the Company's second nonbank subsidiary, merged into CWS.
	On January 16, 2014, the Company announced the completion of its acquisition of United Financial Banking Companies, Inc. ("UFBC"), the holding company of The Business Bank ("TBB"), pursuant to a previously announced definitive merger agreement. The merger of UFBC into Cardinal was effective January 16, 2014. Under the terms of the merger agreement, UFBC shareholders received $19.13 in cash and 1.154 shares of the Company's common stock in exchange for each share of UFBC common stock they owned immediately prior to the merger. TBB, which was headquartered in Vienna, Virginia, merged into Cardinal Bank effective March 8, 2014 adding eight (8) banking locations in northern Virginia, one of the Company's target markets.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Summary of Significant Accounting Policies	'
Summary of Significant Accounting Policies	'
	(2) Summary of Significant Accounting Policies
	(a)
	Use of Estimates
	U.S. generally accepted accounting principles are complex and require management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and contingent liabilities, at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates affecting the Company's financial statements relate to accounting for business combinations and impairment testing of goodwill, the allowance for loan losses, accounting for impairment of identifiable intangible assets, the valuation of the deferred tax assets, other-than-temporary impairment assessments for investment securities, fair value measurements of certain assets and liabilities, fair values of derivatives and investment securities and reserves for repurchase of mortgage loans previously sold to investors. Actual results could differ from these estimates.
	(b)
	Principles of Consolidation
	The consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation.
	(c)
	Accounting for Business Combinations
	Business combinations are accounted for under the purchase method. The purchase method requires that the cost of an acquired entity be allocated to the assets acquired and liabilities assumed, based on their estimated fair values at the date of acquisition. The excess of the cost of an acquired entity over the net of the amounts assigned to assets acquired and liabilities assumed, including identifiable intangibles, is recorded as goodwill.
	(d)
	Cash and Cash Equivalents
	For the consolidated statements of cash flows, the Company has defined cash and cash equivalents as cash and due from banks and federal funds sold.
	(e)
	Investment Securities
	The Company classifies its investment securities into one of three categories: available-for-sale, held-to-maturity or trading. Held-to-maturity securities are those securities for which the Company has the ability and intent to hold until maturity. Trading securities are those securities for which the Company has purchased and holds for the purpose of selling in the near future. All other securities are classified as available-for-sale.
	Held-to-maturity securities are carried at amortized cost. Available-for-sale and trading securities are carried at estimated fair value. Unrealized gains and losses, net of applicable tax, on available-for-sale securities are reported in other comprehensive income (loss). Unrealized market value adjustments, fees and realized gains and losses, on trading securities are reported in non-interest income.
	At December 31, 2013 and 2012, the Company had investment securities classified as trading. These investments were purchased to economically hedge against fair value changes of the Company's nonqualified deferred compensation plan liability. Those investments were designated as trading securities, and as such, the changes in fair value are reflected in earnings.
	Gains and losses on the sale of securities are determined using the specific identification method.
	The Company regularly evaluates its securities whose values have declined below their amortized cost to assess whether the decline in fair value is other-than-temporary. The Company considers various factors in determining whether a decline in fair value is other-than-temporary including the issuer's financial condition and/or future prospects, the effects of changes in interest rates or credit spreads, the expected recovery period and other quantitative and qualitative information. The valuation of securities for impairment is a process subject to estimation, judgment and uncertainty and is intended to determine whether declines in the fair value of investments should be recognized in current period earnings. The risks and uncertainties include changes in general economic conditions and future changes in assessments of the aforementioned factors. It is expected that such factors will change in the future, which may result in future other-than-temporary impairments. For impairments of debt securities that are deemed to be other-than-temporary, the credit portion of an other-than-temporary impairment loss is recognized in earnings and the non-credit portion is recognized in accumulated other comprehensive income in those situations where the Company does not intend to sell the security and it is more likely than not that the Company will not be required to sell the security prior to recovery.
	On December 10, 2013, the Office of the Comptroller of the Currency, the FDIC, the Board of Governors of the Federal Reserve System, the SEC, and the Commodity Futures Trading Commission (collectively, "the Agencies"), released final rules (the "Final Rules") to implement Section 619 of the Financial Reform Act, commonly known as the "Volcker Rule". The Volcker Rule, among other things, prohibits banking entities from engaging in proprietary trading and from sponsoring, having an ownership interest in or having certain relationships with hedge funds or private equity funds (referred to in the Final Rules as a covered fund), subject to certain exemptions. The Final Rules impact certain investments held by banks in collateralized debt obligations backed by trust preferred securities, which may constitute ownership interests in covered funds as those terms are defined in the Final Rules. On January 14, 2014, an interim rule was issued by the federal banking regulators to exempt certain of these trust preferred securities from the covered fund definition as issued in the Final Rules.
	The Company owns four pooled trust preferred securities which were all previously classified as held-to-maturity within the investment securities portfolio. Based on the interim rule, only two of the four investments were exempt from the covered fund definition. For the two investments that were not exempt as a result of the interim rule, the Company will be required to divest its investment in these particular pooled trust preferred securities prior to the effectiveness of the Final Rule in July 2015. As a result of this new regulation, these two investments were reclassified to the available-for-sale investment securities portfolio and an other-than-temporary impairment of $300,000 was recognized as of December 31, 2013 as we no longer have the ability to hold until recovery.
	Interest income and dividends on securities are recognized in interest income on an accrual basis. Premiums and discounts are recognized in interest income using the effective interest method. Prepayments of the mortgages securing mortgage-backed securities may affect the yield to maturity. The Company uses actual principal prepayment experience and estimates of future principal prepayments in calculating the yield necessary to apply the effective interest method.
	(f)
	Loans Held for Sale
	Mortgage loans originated and intended for sale into the secondary market are carried at the lower of cost or estimated fair value, determined on an aggregate loan basis. The Company sells its mortgage loans forward to investors and the estimated fair value is largely dependent upon the terms of these outstanding loan purchase commitments as well as movement in market interest rates. Net unrealized losses, if any, are recognized through a valuation allowance by charges to operations. The carrying amount of loans held for sale includes principal balances, valuation allowances, origination premiums or discounts and fees and direct costs that are deferred at the time of origination.
	The Company sells its originated mortgage loans to third party investors servicing released. Upon sale and delivery, the loans are legally isolated from the Company and the Company has no ability to restrict or constrain the ability of third-party investors to pledge or exchange the mortgage loans. The Company does not have the entitlement or ability to repurchase the mortgage loans or unilaterally cause third-party investors to put the mortgage loans back to the Company.
	(g)
	Loans Receivable and Allowance for Loan Losses
	Loans receivable that management has the intent and ability to hold for the foreseeable future or until loan maturity or pay-off are reported at their outstanding principal balance adjusted for any charge-offs, and net of the allowance for loan losses and deferred fees and costs. Loan origination fees and certain direct origination costs are deferred and amortized as an adjustment of the yield using the payment terms required by the loan contract.
	Loans are generally placed into nonaccrual status when they are past-due 90 days as to either principal or interest or when, in the opinion of management, the collection of principal and/or interest is in doubt. A loan remains in nonaccrual status until the loan is current as to payment of both principal and interest or past-due less than 90 days and the borrower demonstrates the ability to pay and remain current. Loans are charged-off when a loan or a portion thereof is considered uncollectible. When cash payments are received, they are applied to principal first, then to accrued interest. It is the Company's policy not to record interest income on nonaccrual loans until principal has become current. In certain instances, accruing loans that are past due 90 days or more as to principal or interest may not go on nonaccrual status if the Chief Credit Officer determines that the loans are well secured and are in the process of collection.
	The Company determines and recognizes impairment of certain loans when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the loan agreement. A loan is not considered impaired during a period of delay in payment if the Company expects to collect all amounts due, including past-due interest. An impaired loan is measured at the present value of its expected future cash flows discounted at the loan's coupon rate, or at the loan's observable market price or fair value of the collateral if the loan is collateral dependent. Because substantially all of the Company's loans are collateral dependent, the Company generally measures impairment based on the estimated fair value of the collateral. The Company measures the collateral value on impaired loans by obtaining an updated appraisal of the underlying collateral and may discount further the appraised value, if necessary, to an amount equal to the expected cash proceeds in the event the loan is foreclosed upon and the collateral is sold. In addition, an estimate of costs to sell the collateral is assumed.
	Nonperforming assets include nonaccrual loans, loans past due 90 days or more and other real estate owned.
	The allowance for loan losses is increased by provisions for loan losses and recoveries of previously charged-off loans, and decreased by loan charge-offs.
	The Company maintains the allowance for loan losses at a level that represents management's best estimate of known and inherent losses in the loan portfolio. Both the amount of the provision expense and the level of the allowance for loan losses are impacted by many factors, including general and industry-specific economic conditions, actual and expected credit losses, historical trends and specific conditions of the individual borrowers including the value of the underlying collateral. Unusual and infrequently occurring events, such as weather-related disasters, may impact the assessment of possible credit losses. As a part of its analysis, the Company uses comparative peer group data and qualitative factors, such as levels of and trends in delinquencies, nonaccrual loans, charged-off loans, changes in volume and terms of loans, effects of changes in lending policy, experience and ability and depth of management, national and local economic trends and conditions and concentrations of credit, competition, and loan review results to support estimates.
	For purposes of this analysis, the Company categorizes loans into one of five categories: commercial and industrial, commercial real estate (including construction), home equity lines of credit, residential mortgages, and consumer loans. Typically, financial institutions use their historical loss experience and trends in losses for each category which are then adjusted for portfolio trends and economical and environmental factors in determining their allowance for loan losses. Prior to 2008, the Company experienced minimal loss history within its loan portfolio and it has only been since the economic downturn that the Company has recorded a higher level of loan losses. Because of this, the Company's allowance model uses the average loss rates of similar institutions (the custom peer group) as a baseline which is then adjusted based on its particular loan portfolio characteristics and environmental factors. The indicated loss factors resulting from this analysis are applied to each of the five categories of loans.
	The Company's peer groups are defined by selecting commercial banking institutions of similar size within Virginia, Maryland and the District of Columbia. This is known as the custom peer group. The commercial banking institutions comprising the custom peer group can change based on certain factors including but not limited to the characteristics, size, and geographic footprint of the institution. The Company has identified 20 banks for the custom peer group which are within $500 million to $5 billion in total assets, the majority of whom are geographically concentrated in the Washington metropolitan area in which the Company operates as this area has seen less of an economic downturn than other areas of the country. The Company evaluates the loan quality indicators of the custom peer group to those within its national FDIC peer group, all banks in Virginia, and all banks in Maryland. These baseline peer group loss rates are then adjusted by an estimated loss emergence factor in order to determine loss coverage for pass-level credits. Finally, the Company makes adjustments to these loss factors based on an analysis of its loan portfolio characteristics, trends, economic considerations and other conditions that should be considered in assessing the Company's credit risk. Peer loss rates are updated on at least an annual basis.
	In addition, the Company individually assigns loss factors to all loans that have been identified as having loss attributes, as indicated by deterioration in the financial condition of the borrower or a decline in underlying collateral value if the loan is collateral dependent. In certain cases, the Company applies, in accordance with regulatory guidelines, a 5% loss factor to all loans classified as special mention, a 15% loss factor to all loans classified as substandard and a 50% loss factor to all loans classified as doubtful. Loans classified as loss loans are fully reserved or charged-off. However, in most instances, the Company evaluates the impairment of certain loans on a loan by loan basis for those loans that are adversely risk rated. For these loans, the Company analyzes the fair value of the collateral underlying the loan and considers estimated costs to sell the collateral on a discounted basis. If the net collateral value is less than the loan balance (including accrued interest and any unamortized premium or discount associated with the loan) the Company recognizes an impairment and establishes a specific reserve for the impaired loan. Because of the limited number of impaired loans within the its portfolio, the Company is able to evaluate each impaired loan individually and therefore specific reserves for impaired loans are generally less than those recommended by the listed regulatory guidelines above.
	In addition, various regulatory agencies, as part of their examination process, periodically review the Company's allowance for loan losses. These agencies may require the Company to recognize additions to the allowance based on their risk evaluation and credit judgment. Management believes that the allowance for loan losses at December 31, 2013 and 2012 is a reasonable estimate of known and inherent losses in the loan portfolio at those dates.
	Loans considered to be troubled debt restructuring ("TDRs") are loans that have their terms restructured (e.g., interest rates, loan maturity date, payment and amortization period, etc.) in circumstances that provide payment relief to a borrower experiencing financial difficulty. All restructured loans are considered impaired loans and may either be in accruing status or nonaccruing status. Nonaccruing restructured loans may return to accruing status provided doubt has been removed concerning the collectability of principal and interest as evidenced by a sufficient period of payment performance in accordance with the restructured terms. Loans may be removed from the restructured category in the year subsequent to the restructuring if their revised loan terms are considered to be consistent with terms that can be obtained in the credit market for loans with comparable risk and if they meet certain performance criteria.
	(h)
	Premises and Equipment
	Land is carried at cost. Premises, furniture, equipment, and leasehold improvements are carried at cost, less accumulated depreciation and amortization. Depreciation of premises, furniture and equipment is computed using the straight-line method over estimated useful lives from three to 25 years. Amortization of leasehold improvements is computed using the straight-line method over the useful lives of the improvements or the lease term, whichever is shorter. Purchased computer software which is capitalized is amortized over estimated useful lives of one to three years. Rent expense on operating leases is recorded using the straight-line method over the appropriate lease term.
	(i)
	Goodwill and Other Intangibles
	Goodwill, which represents the excess of purchase price over fair value of net assets acquired, is not amortized but is evaluated at least annually for impairment by comparing its fair value with its carrying amount. Impairment is indicated when the carrying amount of a reporting unit exceeds its estimated fair value.
	ASU 2011-08 simplifies testing for goodwill impairment by permitting entities to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is greater than its carrying value. If an entity can qualitatively demonstrate that a reporting unit's fair value is more likely than not greater than its carrying value, then it would not be required to perform the quantitative two-step goodwill impairment test.
	A two-step valuation process is applied, as required by ASU 2011-08. In Step 1, each reporting unit's fair value is determined based on three metrics: (1) a primary market approach, which measures fair value based on trading multiples of independent publicly traded financial institutions of comparable size and character to the reporting units, (2) a secondary market approach, which measures fair value based on acquisition multiples of publicly traded financial institutions of comparable size and character which were recently acquired, and (3) an income approach, which estimates fair value based on discounted cash flows. If the fair value of any reporting unit exceeds its adjusted net book value, no write-down of goodwill is necessary. If the fair value of any reporting unit is less than its adjusted net book value, a Step 2 valuation procedure is required to assess the proper carrying value of the goodwill allocated to that reporting unit. The valuation procedures applied in a Step 2 valuation are similar to those that would be performed upon an acquisition, with the Step 1 fair value representing a hypothetical reporting unit purchase price.
	No impairment was recorded for 2013, 2012, and 2011.
	(j)
	Bank-Owned Life Insurance
	Under the Company's bank-owned life insurance policy, executives or other key individuals are the insureds and the Company is the owner and beneficiary of the policy. As such, the insured has no claim to the insurance policy, the policy's cash value, or a portion of the policy's death proceeds. The increase in the cash surrender value over time is recorded as other non-interest income. The Company monitors the financial strength and condition of the counterparty.
	During 2012, the Company received a death benefit payment of $6.6 million which resulted in an increase in non-interest income of $2.4 million.
	(k)
	Realized and Unrealized Gains on Mortgage Banking Activities
	Realized and unrealized gains on mortgage banking activities include income earned by George Mason from the origination and sale of mortgage loans to third party investors, and other activities incidental to mortgage banking activities. The Company enters into interest rate lock commitments to sell and deliver the mortgage loans, servicing released, to third party investors on a best efforts basis. Unrealized gains include the recognition of the fair value of the rate lock commitment derivative, which approximates the differential between the par value of the loan and the amount that will be received upon the delivery of the loan to the third party investor.
	(l)
	Management Fee Income
	Management fee income represents income earned for the management and operational support provided by George Mason to other mortgage banking companies (the "managed companies") owned by local homebuilders. The relationship of George Mason to these managed companies is solely as service provider and there is no fiduciary relationship or equity investment involved. Fees earned by George Mason are accrued based on contractual arrangements with each of the managed companies and are generally determined as a percentage of the managed company's net income before income taxes. During the fourth quarter of 2013, the Company amended its agreement with the managed companies to record fee income on a per loan basis. As of the effective date of the amendment, George Mason charges $700 per loan originated by each of the managed companies.
	(m)
	Investment Fee Income
	Investment fee income represents commissions paid by customers of CWS and asset management fees paid by the customers of Wilson/Bennett for investment services. Revenue from Trust Services is also a component of investment fee income and is recognized in the period earned in accordance with contractual percentage of assets under management or custody. Trust Services revenue is generally determined based upon the fair value of assets under management or custody at the end of the period. Fees are recognized in income as they are earned. As of June 30, 2013, the Company merged the remaining operations of its trust division and Wilson/Bennett, both of which had been included in the wealth management services segment, into CWS. Results for the year ended December 31, 2013 include six months of operations of these subsidiaries.
	(n)
Income Taxes
Deferred tax assets and liabilities are recognized for the tax effects of differing carrying values of assets and liabilities for tax and financial statement purposes that will reverse in future periods. Deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
When uncertainty exists concerning the recoverability of a deferred tax asset, the carrying value of the asset may be reduced by a valuation allowance. The amount of any valuation allowance established is based upon an estimate of the deferred tax asset that is more likely than not to be recovered. Increases or decreases in the valuation allowance result in increases or decreases to the provision for income taxes.
Uncertain tax positions, if any, are accounted for by applying a recognition threshold and measurement attribute for tax positions taken or expected to be taken on a tax return. Recognition and measurement of tax positions is based on management's evaluations of relevant tax code and appropriate industry information about audit proceedings for comparable positions at other organizations. Increases to unrecognized tax benefits will occur as a result of accruing for the nonrecognition of the position for the current year. Decreases will occur as a result of the lapsing of the statute of limitations for the oldest outstanding year which includes the position.
(o)
Earnings Per Common Share
Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the periods, including shares which will be issued to settle liabilities of the deferred compensation plans. Diluted earnings per share reflects the impact of dilutive potential common shares that would have been outstanding if common stock equivalents had been issued, as well as any adjustment to income that would result from the assumed issuance. Common stock equivalents that may be issued by the Company relate primarily to outstanding stock options, and the dilutive potential common shares resulting from outstanding stock options are determined using the treasury stock method. Common stock equivalents for diluted earnings per share purposes also includes common shares which may be issued, but are not required to be issued, to settle the Company's obligations under its deferred compensation plans. The effects of anti-dilutive common stock equivalents are excluded from the calculation of diluted earnings per share.
(p)
Derivative Instruments and Hedging Activities
The Company records its derivatives at their fair values in other assets and other liabilities on the statement of condition. The Company does not enter into derivative transactions for speculative purposes. For derivatives designated as accounting hedges, the Company contemporaneously documents the hedging relationship, including the risk management objective and strategy for undertaking the hedge, how effectiveness will be assessed at inception and at each reporting period and the method for measuring ineffectiveness. The Company evaluates the effectiveness of these transactions at inception and on an ongoing basis. Ineffectiveness is recorded through earnings. For derivatives designated as cash flow hedges, the fair value adjustment is recorded as a component of other comprehensive income, net of tax, except for the ineffective portion. For derivatives designated as fair value hedges, the fair value adjustments for both the hedged item and the hedging instrument are recorded through the income statement with any difference considered the ineffective portion of the hedge. The Company discontinues hedge accounting when i) the hedge is no longer considered highly effective or ii) the derivative matures or is sold or terminates.
In the normal course of business, the Company enters into rate lock commitments, to finance residential mortgage loans. These commitments, which contain fixed expiration dates, offer the borrower an interest rate guarantee provided the loan meets underwriting guidelines and closes within the timeframe established by the Company. Interest rate risk arises on these commitments and subsequently closed loans if interest rates change between the time of the interest rate lock and the delivery of the loan to the investor. Loan commitments related to residential mortgage loans intended to be sold are considered derivatives and are marked to market through earnings. In addition to the effects of the change in market interest rate, the fair value measurement of the derivative also contemplates the expected cash flows to be received from the counterparty to the future sale of the loan. For purposes of calculating the aggregate fair value of the rate lock derivatives at year end, the Company assumes an estimated loan closing and investor delivery rate based on historical experience. The measurement of the estimated fair value of the rate lock derivatives is presented as realized and unrealized gains from mortgage banking activities.
To mitigate the effect of interest rate risk inherent in providing rate lock commitments, the Company economically hedges its commitments by entering into best efforts forward delivery loan sales contracts. During the rate lock commitment period, these forward loan sales contract derivatives are marked to fair value. The fair values of loan commitments and the fair values of forward sales contracts generally move in opposite directions, and the net impact of the changes in these valuations on net income during the loan commitment period is generally inconsequential, excluding the effect of the fair value component associated with the projected cash flows from the loan delivery to the investor. At the closing of the loan, the rate lock commitment derivative matures and the Company records a loan held for sale and continues to be obligated under the same forward loan sales contract. The loans held for sale are then designated as the hedged item in a cash flow hedge. The derivative in this relationship is the forward loan sale commitment.
When hedge accounting is discontinued because it is probable an anticipated loan sale will not occur, the Company recognizes immediately in earnings any gains and losses that were accumulated in other comprehensive income.
(q)
Stock-Based Compensation
The Company recognizes in the income statement the grant-date fair value of stock options and other equity-based compensation. The Company classifies stock awards as either an equity award or a liability award. Equity classified awards are valued as of the grant date using either an observable market price or a valuation methodology. Liability classified awards are valued at fair value at each reporting date. For the periods presented, all of the Company's stock options are classified as equity awards.
The Company awards stock options with a graded-vesting period and as such has elected to recognize compensation costs over the requisite service period for the entire award. Total compensation costs charged against income for the years ended December 31, 2013, 2012, and 2011, was $687,000, $228,000, and $604,000, respectively. The total income tax benefit related to stock options exercised and recognized in the income statement for share-based compensation arrangements was $287,000, $600,000, and $361,000, for the years ended December 31, 2013, 2012, and 2011, respectively.
At December 31, 2013, the Company had two stock-based employee compensation plans, which are described more fully in Note 20.
Stock options are granted with an exercise price equal to the common stock's fair market value on the date of grant. Director stock options have ten year terms and vest and become fully exercisable on the grant date. Certain employee stock options have ten year terms and vest and become fully exercisable in 25% increments beginning as of the grant date. In addition, the Company has granted stock options to employees of the Company that have ten year terms and vest and become fully exercisable in 20% increments beginning after their first year of service.
The weighted average per share fair values of stock option grants made in 2013, 2012, and 2011, were $5.83, $4.65, and $4.84, respectively. The fair values of the options granted were estimated on the grant date using the Black-Scholes option-pricing model based on the following weighted average assumptions:
	2013	2012	2011
Estimated option life	6.5 years	6.5 years	6.5 years
Risk free interest rate	1.14 - 2.21%	0.97 - 1.69%	1.45 - 2.81%
Expected volatility	39.50%	42.10%	44.70%
Expected dividend yield	1.23%	1.10%	1.02%
Expected volatility is based upon the average annual historical volatility of the Company's common stock. The estimated option life is derived from the "simplified method" formula as described in Staff Accounting Bulletin No. 110. The risk free interest rate is based upon the seven-year U.S. Treasury note rate in effect at the time of grant. The expected dividend yield is based upon implied and historical dividend declarations.

Investment_Securities_and_Othe

Investment Securities and Other Investments	12 Months Ended
	Dec. 31, 2013
Investment Securities and Other Investments	'
Investment Securities and Other Investments	'
	(3) Investment Securities and Other Investments
	The approximate fair value and amortized cost of investment securities at December 31, 2013 and 2012 are shown below.
		2013
	(In thousands)	Gross		Gross			Gross			Fair value
		Amortized		Unrealized			Unrealized
		cost		Gains			Losses
	Investment Securities Available-for-Sale
	U.S. government-sponsored agencies	$	75,562	$	2,914		$	(1,548	)	$	76,928
	Mortgage-backed securities		144,609		3,566			(346	)		147,829
	Municipal securities		113,716		3,426			(404	)		116,738
	U.S. treasury securities		4,992		37			—			5,029
	Pooled trust preferred securities		2,795		—			—			2,795
	Total	$	341,674	$	9,943		$	(2,298	)	$	349,319
	Investment Securities Held-to-Maturity
	Mortgage-backed securities		2,472		145			—			2,617
	Pooled trust preferred securities		4,005		—			(1,095	)		2,910
	Total	$	6,477	$	145		$	(1,095	)	$	5,527
		2012
	(In thousands)	Gross		Gross			Gross			Fair value
		Amortized		Unrealized			Unrealized
		cost		Gains			Losses
	Investment Securities Available-for-Sale
	U.S. government-sponsored agencies	$	55,756	$	5,777		$	—		$	61,533
	Mortgage-backed securities		110,214		8,704			(5	)		118,913
	Municipal securities		79,055		7,292			—			86,347
	U.S. treasury securities		4,968		142			—			5,110
	Total	$	249,993	$	21,915		$	(5	)	$	271,903
	Investment Securities Held-to-Maturity
	Mortgage-backed securities		3,705		242			—			3,947
	Pooled trust preferred securities		7,661		—			(2,589	)		5,072
	Total	$	11,366	$	242		$	(2,589	)	$	9,019
	The fair value and amortized cost of investment securities by contractual maturity at December 31, 2013 are shown below. Expected maturities may differ from contractual maturities because many issuers have the right to call or prepay obligations with or without call or prepayment penalties.
		2013
		Available-for-Sale					Held-to-Maturity
	(In thousands)	Amortized		Fair			Amortized			Fair
		cost		Value			cost			Value
	Within One Year	$	8,549	$	8,690		$	—		$	—
	After 1 year but within 5 years	$	30,120	$	31,672		$	—		$	—
	After 5 years but within 10 years		61,665		64,876			—			—
	After 10 years		96,731		96,252			4,005			2,910
	Mortgage-backed securities		144,609		147,829			2,472			2,617
	Total	$	341,674	$	349,319		$	6,477		$	5,527
	For the years ended December 31, 2013, 2012, and 2011, proceeds from sales of investment securities available-for-sale amounted to $0, $0, and $40.4 million, respectively. Gross realized gains in 2013, 2012, and 2011, amounted to $0, $0, and $2.4 million, respectively. There were no gross realized losses for each of the years ended December 31, 2013, 2012, and 2011.
	The table below shows the Company's investment securities' gross unrealized losses and their fair value, aggregated by investment category and the length of time that individual securities have been in a continuous unrealized loss position at December 31, 2013 and 2012.
		At December 31, 2013
		Less than 12 months					12 months or more						Total
	Investment Securities Available-for-Sale	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
	(In thousands)	Value		loss			Value			loss			Value		loss
	U.S. government sponsored agencies	$	38,554	$	(1,548	)	$	—		$	—		$	38,554	$	(1,548	)
	Mortgage-backed securities		46,563		(335	)		318			(11	)		46,881		(346	)
	Municipal securities		30,452		(404	)		—			—			30,452		(404	)
	Total temporarily impaired securities	$	115,569	$	(2,287	)	$	318		$	(11	)	$	115,887	$	(2,298	)
		Less than					12 months or more						Total
		12 months
	Investment Securities Held-to-Maturity	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
	(In thousands)	Value		loss			Value			loss			Value		loss
	Pooled trust preferred securities	$	—	$	—		$	2,910		$	(1,095	)	$	2,910	$	(1,095	)
	Total temporarily impaired securities	$	—	$	—		$	2,910		$	(1,095	)	$	2,910	$	(1,095	)
		At December 31, 2012
		Less than					12 months or more						Total
		12 months
	Investment Securities Available-for-Sale	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
	(In thousands)	Value		loss			Value			loss			Value		loss
Mortgage-backed securities	$	—	$	—		$	362		$	(5	)	$	362	$	(5	)
Total temporarily impaired securities	$	—	$	—		$	362		$	(5	)	$	362	$	(5	)
	Less than					12 months or more						Total
	12 months
Investment Securities Held-to-Maturity	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
(In thousands)	Value		loss			Value			loss			Value		loss
Pooled trust preferred securities	$	—	$	—		$	5,072		$	(2,589	)	$	5,072	$	(2,589	)
Total temporarily impaired securities	$	—	$	—		$	5,072		$	(2,589	)	$	5,072	$	(2,589	)
The Company estimates the fair value of its pooled trust preferred securities portfolio by using third party projected cash flows for each of the issuances in the portfolio, and a discount rate that is commensurate with the risk inherent in the expected cash flows is applied to arrive at the estimated fair value.
The Company completes reviews for other-than-temporary impairment at least quarterly. As of December 31, 2013, the majority of the investment securities portfolio consisted of securities rated AAA by a leading rating agency. Investment securities which carry a AAA rating are judged to be of the best quality and carry the smallest degree of investment risk. At December 31, 2013, 98% of the Company's mortgage-backed securities are guaranteed by the Federal National Mortgage Association (FNMA), the Federal Home Loan Mortgage Corporation (FHLMC) and the Government National Mortgage Association (GNMA).
The Company has $2.4 million in non-government non-agency mortgage-backed securities in its held-to-maturity portfolio. These securities are rated from AAA to AA. The various protective elements on the non agency securities may change in the future if market conditions or the financial stability of credit insurers changes, which could impact the ratings of these securities.
At December 31, 2013, certain of the Company's investment grade securities were in an unrealized loss position. Investment securities with unrealized losses are a result of pricing changes due to recent and negative conditions in the current market environment and not as a result of permanent credit impairment. Contractual cash flows for the agency mortgage-backed securities are guaranteed and/or funded by the U.S. government. Other mortgage-backed securities and municipal securities have third party protective elements and there are no negative indications that the contractual cash flows will not be received when due. The Company does not intend to sell nor does the Company believe it will be required to sell any of its temporarily impaired securities prior to the recovery of the amortized cost.
The Company owns four pooled trust preferred securities which were all previously classified as held-to-maturity within the investment securities portfolio. Based on the interim rule, only two of the four investments were exempt from the covered fund definition. For the two investments that were not exempt as a result of the interim rule, the Company will be required to divest its investment in these particular pooled trust preferred securities prior to the effectiveness of the Final Rule on July 21, 2015. As a result of this new regulation, these two investments which had a par value of $3.1 million and a carrying value of $2.8 million at December 31, 2013, were reclassified to the available-for-sale investment securities portfolio and an other-than-temporary impairment of $300,000 was recognized as of December 31, 2013 as the Company no longer has the ability to hold until recovery. The impairment recorded was determined based on the market bid price of these investments.
The par value of the two pooled trust preferred securities still classified as held-to-maturity totaled $4.0 million at December 31, 2013. The collateral underlying these structured securities are instruments issued by financial institutions. The Company owns the A-3 tranches in each issuance. Each of the bonds is rated by more than one rating agency. One security has a composite rating of A- and the other security has a composite rating of BBB+. Observable trading activity remains limited for these types of securities. The Company has estimated the fair value of the securities through the use of internal calculations and through information provided by external pricing services. Given the level of subordination below the A-3 tranches, and the actual and expected performance of the underlying collateral, the Company expects to receive all contractual interest and principal payments recovering the amortized cost basis of each of the securities, and concluded that these securities are not other-than-temporarily impaired. The Company continuously monitors the financial condition of the underlying issues and the level of subordination below the A-3 tranches. The Company also utilizes a multi-scenario model which assumes varying levels of additional defaults and deferrals and the effects of such adverse developments on the contractual cash flows for the A-3 tranches. In each of the adverse scenarios, there was no indication of a break to the A-3 contractual cash flows.
In one of the pooled trust preferred securities, 60% of the principal balance is subordinate to the Company's class of ownership, and it is estimated that a break in contractual cash flow would occur if $169 million of the remaining $233 million, or 73% of the performing collateral defaulted or deferred payment. In the other pooled trust preferred security, 56% of the principal balance is subordinate to the Company's class of ownership, and it is estimated that a break in contractual cash flow would occur if $155 million of the remaining $243 million, or 64% of the performing collateral defaulted or deferred payment. Significant judgment is involved in the evaluation of other-than-temporary impairment. The Company does not intend to sell nor does the Company believe it is probable that it will be required to sell these pooled trust preferred securities prior to the recovery of its investment.
With the exception of the aforementioned impairment recorded on the Company's pooled trust preferred securities, no other-than-temporary impairment has been recognized for the remaining securities in the Company's investment portfolio as of December 31, 2013, 2012, and 2011.
Investment securities that were pledged to secure borrowed funds and other balances as required at December 31, 2013 and 2012 had carrying values of $188.1 million and $235.9 million, respectively. The market values of these pledged securities at December 31, 2013 and 2012 were $197.1 million and $256.1 million, respectively. They were pledged as follows:
	2013
(In thousands)	Carrying Value		Market Value
FHLB advances	$	6,510	$	7,225
Customer repurchase agreements		119,883		125,703
Debtor in possession, public deposits, trust services division deposits and interest rate swap		61,695		64,144
	$	188,088	$	197,072
	2012
(In thousands)	Carrying Value		Market Value
FHLB advances	$	8,497	$	9,731
Customer repurchase agreements		164,258		177,708
Debtor in possession, public deposits, trust services division deposits and interest rate swap		63,180		68,699
	$	235,935	$	256,138
Investment securities are pledged against certain customer deposit accounts (referred to as customer repurchase agreements). See Note 11 to the notes to consolidated financial statements for additional information.
Other investments include Federal Home Loan Bank stock of $17.8 million and $13.6 million at December 31, 2013 and 2012, respectively, and $63,000 of Community Bankers' Bank stock at December 31, 2013 and 2012. As a member of the Federal Home Loan Bank of Atlanta ("FHLB"), the Company's banking subsidiary is required to hold stock in this entity. Stock membership in Community Bankers' Bank allows the Company to participate in loan purchases and sales. In addition, included in other investments at December 31, 2013 and 2012 is the Company's $619,000 investment in Cardinal Statutory Trust I. At December 31, 2013 and 2012, the Company has an equity investment in a local bank holding company of $50,000. These investments are carried at cost since no active trading markets exist. At December 31, 2013, the Company had low income housing fund investments of $524,000 compared to $2,000 at December 31, 2012.
The Company's policy is to review for impairment of FHLB stock at each reporting period. At December 31, 2013, FHLB was in compliance with all of its regulatory capital requirements. The Company believes its holdings in the stock are ultimately recoverable at par value as of December 31, 2013. In addition, the Company has ample liquidity and does not require redemption of its FHLB stock in the foreseeable future. Based on the Company's analysis of positive and negative factors, it believes that as of December 31, 2013 and 2012, its FHLB stock was not impaired.

Investment_Securities_Trading

Investment Securities - Trading	12 Months Ended
	Dec. 31, 2013
Investment Securities - Trading	'
Investment Securities - Trading	'
	(4) Investment Securities—Trading
	The Company acquired investment assets and designated them as trading to economically hedge against fair value changes of the Company's nonqualified deferred compensation plan liability. Those investments were designated as trading securities, and as such, the changes in fair value are reflected in earnings. Trading securities at December 31, 2013 and 2012 are as follows:
	(in thousands)	2013		2012
	Cash equivalents	$	506	$	464
	Equities		—		419
	Mutual funds		3,384		2,268
		$	3,890	$	3,151
	The net realized gain on trading securities for the years ended December 31, 2013, 2012, and 2011 and was $68,000, $158,000, and $144,000, respectively.

Loans_Receivable_and_Allowance

Loans Receivable and Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2013
Loans Receivable and Allowance for Loan Losses	'
Loans Receivable and Allowance for Loan Losses	'
	(5) Loans Receivable and Allowance for Loan Losses
	The loan portfolio at December 31, 2013 and 2012 consists of the following:
	(In thousands)	2013			2012
	Commercial and industrial	$	219,156		$	222,961
	Real estate—commercial		1,048,579			827,243
	Real estate—construction		363,063			373,717
	Real estate—residential		299,484			260,352
	Home equity lines		109,481			117,647
	Consumer		4,159			4,204
			2,043,922			1,806,124
	Net deferred fees		(3,754	)		(2,695	)
	Loans receivable, net of fees		2,040,168			1,803,429
	Allowance for loan losses		(27,864	)		(27,400	)
	Loans receivable, net	$	2,012,304		$	1,776,029
	Loans totaling $1.1 billion serve as collateral for the Company's Federal Home Loan Bank advance capacity at December 31, 2013. Loans held as collateral at the Federal Reserve for use of the Company's discount window line of credit total $109.8 million at December 31, 2013.
	For purposes of monitoring the performance of the loan portfolio and estimating the allowance for loan losses, the Company's loans receivable portfolio is segmented as follows: commercial and industrial, real estate-commercial, real estate-construction, real estate-residential, home equity lines and consumer loans.
	Commercial and Industrial Loans.    The Company makes commercial loans to qualified businesses within its market area. The commercial lending portfolio consists primarily of commercial and industrial loans for the financing of accounts receivable, property, plant and equipment. The Company has a government contract lending group which provides secured lending to government contracting firms and businesses based primarily on receivables from the federal government. In addition, the Company, which is certified as a preferred lender by the Small Business Administration (SBA), offers SBA guaranteed loans and asset-based lending arrangements to its customers.
	Commercial and industrial loans generally have a higher degree of risk than other certain types of loans. Commercial loans typically are made on the basis of the borrower's ability to repay the loan from the cash flow from its business and are secured by business assets, such as commercial real estate, accounts receivable, equipment and inventory, the values of which may fluctuate over time and generally cannot be appraised with as much precision as residential real estate. As a result, the availability of funds for the repayment of commercial loans may be substantially dependent upon the commercial success of the business itself. To manage these risks, the Company's policy is to secure commercial loans originated with both the assets of the business, which are subject to the risks described above, and other additional collateral and guarantees that may be available.
	Real Estate-Commercial Loans.    Real estate-commercial loans are primarily secured by various types of commercial real estate, including office, retail, warehouse, industrial and other non-residential types of properties and are made to the owners and/or occupiers of such property.
	These loans typically involve larger loan balances concentrated with single borrowers or groups of related borrowers. Additionally, the repayment of loans secured by income-producing properties is typically dependent upon the successful operation of a business or real estate project and thus may be subject to adverse conditions in the commercial real estate market or in the general economy. The Company generally requires personal guarantees or endorsements with respect to these loans and loan-to-value ratios for real estate-commercial loans generally do not exceed 80%.
	Real Estate-Construction Loans.    The Company's real estate-construction loan portfolio consists of single-family residential properties, multi-family properties and commercial projects. Construction lending entails significant additional risks as they often involve larger loan balances concentrated with single borrowers or groups of related borrowers. Construction loans also involve additional risks since funds are advanced while the property is under construction, which property has uncertain value prior to the completion of construction. Thus, it is more difficult to accurately evaluate the total loan funds required to complete a project and related loan-to-value ratios. To reduce the risks associated with construction lending, the Company generally limits loan-to-value ratios to 80% of when-completed appraised values for owner-occupied residential or commercial properties and for investor-owned residential or commercial properties. Construction loan agreements may include provisions which allow for the payment of contractual interest from an interest reserve. Amounts drawn from an interest reserve increase the amount of the outstanding balance of the construction loan. This is an industry standard practice.
	Real Estate-Residential and Home Equity Loans.    Real estate-residential loans are originated by Cardinal Bank and George Mason. This portfolio consists of residential first and second mortgage loans, residential construction loans and home equity lines of credit and term loans secured primarily by the residences of borrowers.
	Residential mortgage loans and home equity lines of credit secured by owner-occupied property generally are made with a loan-to-value ratio of up to 80%. Loan-to-value ratios of up to 90% may be allowed on residential owner-occupied property if the borrower exhibits unusually strong creditworthiness.
	Consumer Loans.    The Company's consumer loans consist primarily of installment loans made to individuals for personal, family and household purposes. The specific types of consumer loans originated include home improvement loans, automobile loans, debt consolidation loans and other general consumer lending.
	Consumer loans may entail greater risk than certain other types of loans, particularly in the case of consumer loans that are unsecured, such as lines of credit, or secured by rapidly depreciable assets, such as automobiles.
	The Company's policy for consumer loans is to accept moderate risk while minimizing losses, primarily through a careful credit and financial analysis of the borrower. In evaluating consumer loans, the Company requires its lending officers to review the borrower's collateral and stability of income, past credit history, amount of debt currently outstanding and the impact of these factors on the ability of the borrower to repay the loan in a timely manner.
	The Company also issues credit cards to certain of its customers. In determining to whom the Company will issue credit cards, the Company evaluates the borrower's level and stability of income, past credit history and other factors. Credit card receivables are included in the consumer loan portfolio.
	Substantially all of the Company's loans, commitments and standby letters of credit have been granted to customers located in the Washington, D.C. metropolitan area. As a matter of regulatory restriction, the Company's banking subsidiary limits the amount of credit extended to any single borrower or group of related borrowers. At December 31, 2013, the amount of credit extended to any single borrower or group of related borrowers was limited to $51.5 million. Loans in process at December 31, 2013 and 2012 were $0 and $573,000, respectively.
	The Company's allowance for loan losses is based first, on a segmentation of its loan portfolio by general loan type, or portfolio segments, as presented in the preceding table. Certain portfolio segments are further disaggregated and evaluated collectively for impairment based on class segments, which are largely based on the type of collateral underlying each loan.
	An analysis of the change in the allowance for loan losses follows:
	(In thousands)	2013			2012			2011
	Balance, beginning of year	$	27,400		$	26,159		$	24,210
	Provision for loan losses		(32	)		7,123			6,910
	Loans charged-off		(231	)		(6,919	)		(5,654	)
	Recoveries		727			1,037			693
	Balance, end of year	$	27,864		$	27,400		$	26,159
	An analysis of the allowance for loan losses based on loan type, or segment, and the Company's loan portfolio, which identifies certain loans that are evaluated for individual or collective impairment, is below:
	Allowance for Loan Losses
	For the Year Ended December 31, 2013
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Allowance for loan losses:
	Beginning Balance, January 1	$	525		$	17,990		$	7,675		$	857		$	266		$	87			27,400
	Charge-offs		(42	)		—			—			(185	)		—			(4	)		(231	)
	Recoveries		311			289			21			104			—			2			727
	Provision for loan losses		2,535			(2,203	)		(2,360	)		1,645			343			8			(32	)
	Ending Balance, December 31, 2013	$	3,329		$	16,076		$	5,336		$	2,421		$	609		$	93		$	27,864
	Ending Balance, December 31, 2013:
	Individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Collectively evaluated for impairment		3,329			16,076			5,336			2,421			609			93			27,864
	Loans Receivable
	At December 31, 2013
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Loans Receivable:
	Ending Balance, December 31, 2013	$	219,156		$	1,048,579		$	363,063		$	299,484		$	109,481		$	4,159		$	2,043,922
	Ending Balance, December 31, 2013:
	Individually evaluated for impairment	$	814		$	1,738		$	775		$	—		$	51		$	—		$	3,378
	Collectively evaluated for impairment		218,342			1,046,841			362,288			299,484			109,430			4,159			2,040,544
	Allowance for Loan Losses
	For the Year Ended December 31, 2012
(In thousands)
	Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
	Industrial			Commercial			Construction			Residential			Lines
Allowance for loan losses:
Beginning Balance, January 1	$	3,390		$	13,377		$	6,495		$	1,709		$	1,119		$	69			26,159
Charge-offs		(1,194	)		(4,959	)		—			(291	)		(460	)		(15	)		(6,919	)
Recoveries		24			105			627			241			36			4			1,037
Provision for loan losses		(1,695	)		9,467			553			(802	)		(429	)		29			7,123
Ending Balance, December 31, 2012	$	525		$	17,990		$	7,675		$	857		$	266		$	87		$	27,400
Ending Balance, December 31, 2012:
Individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—		$	—		$	—
Collectively evaluated for impairment		525			17,990			7,675			857			266			87			27,400
Loans Receivable
At December 31, 2012
(In thousands)
	Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
	Industrial			Commercial			Construction			Residential			Lines
Loans Receivable:
Ending Balance, December 31, 2012	$	222,961		$	827,243		$	373,717		$	260,352		$	117,647		$	4,204		$	1,806,124
Ending Balance, December 31, 2012:
Individually evaluated for impairment	$	2,064		$	1,657		$	4,725		$	—		$	—		$	—		$	8,446
Collectively evaluated for impairment		220,897			825,586			368,992			260,352			117,647			4,204			1,797,678
The accounting policy related to the allowance for loan losses is considered a critical policy given the level of estimation, judgment and uncertainty in evaluating the levels of the allowance required for the inherent probable losses in the loan portfolio and the material effect such estimation, judgment and uncertainty can have on the consolidated financial results.
The Company's ongoing credit quality management process relies on a system of activities to assess and evaluate various factors that impact the estimation of the allowance for loan losses. These factors include, but are not limited to: current economic conditions; loan concentrations, collateral adequacy and value; past loss experience for particular types of loans, size, composition and nature of loans; migration of loans through the Company's loan rating methodology; trends in charge-offs and recoveries. This process also contemplates a disciplined approach to managing and monitoring credit exposures to ensure that the structure and pricing of credit is always consistent with the Company's assessment of the risk. The loan officer has frequent contact with the borrower and is a key player in the credit management process and must develop and diligently practice sound credit management skills and habits to ensure effectiveness. Under the direction of the Company's loan committee and the chief credit officer, the credit risk management function works with the loans officers and other groups within the Company to monitor the loan portfolio, maintain the watch list, and compile the analysis necessary to determine the allowance for loan losses.
Loans are added to the watch list when circumstances appear to warrant the inclusion of the relationship. As a general rule, loans are added to the watch list when they are deemed to be problem assets. Problem assets are defined as those that have been risk rated substandard or lower. Successful problem asset management requires early recognition of deteriorating credits and timely corrective or risk management actions. Generally, risk ratings are either approved or amended by the loan committee accordingly. Problem loans are maintained on the watch list until the loan is either paid off or circumstances around the borrower's situation improve to the point that the risk rating on the loan is adjusted upward.
In addition to internal activities, the Company also engages an external consultant on a quarterly basis to review the Company's loan portfolio. This external loan review function helps to evaluate the soundness of the loan portfolio through a third party review of existing exposures in the portfolio, supporting the commercial loan officers in the execution of its credit management responsibilities, and monitoring the adherence to the Company's credit risk management standards.
The following tables report the Company's nonaccrual and past due loans at December 31, 2013 and 2012. In addition, the credit quality of the loan portfolio is provided as of December 31, 2013 and 2012.
Nonaccrual and Past Due Loans
At December 31, 2013
(In thousands)
	30 - 59			60 - 89			90 Days			Total			Current			Total Loans			90 Days			Nonaccrual
	Days			Days			or More			Past Due									Past Due			Loans
	Past Due			Past Due			Past Due												and Still
							(includes												Accruing
							nonaccrual)
Commercial and industrial	$	101		$	316		$	—		$	417		$	218,739			219,156		$	—		$	—
Real estate—commercial
Owner occupied		—			—			—			—			279,631			279,631			—			—
Non-owner occupied		82			—			1,738			1,820			767,128			768,948			—			1,738
Real estate—construction
Residential		—			—			—			—			120,144			120,144			—			—
Commercial		—			—			525			525			242,394			242,919			—			525
Real estate—residential
Single family		8			—			—			8			213,537			213,545			—			—
Multi-family		—			—			—			—			85,939			85,939			—			—
Home equity lines		—			—			51			51			109,430			109,481			—			51
Consumer
Installment		—			—			—			—			3,912			3,912			—			—
Credit cards		—			—			—			—			247			247			—			—
	$	191		$	316		$	2,314		$	2,821		$	2,041,101		$	2,043,922		$	—		$	2,314
Nonaccrual and Past Due Loans
At December 31, 2012
(In thousands)
	30 - 59			60 - 89			90 Days			Total			Current			Total Loans			90 Days			Nonaccrual
	Days			Days			or More			Past Due									Past Due			Loans
	Past Due			Past Due			Past Due												and Still
							(includes												Accruing
							nonaccrual)
Commercial and industrial	$	—		$	—		$	2,064		$	2,064		$	220,897			222,961		$	—		$	2,064
Real estate—commercial
Owner occupied		—			—			—			—			255,343			255,343			—			—
Non-owner occupied		—			—			3,800			3,800			568,100			571,900			—			3,800
Real estate—construction
Residential		—			—			—			—			84,551			84,551			—			—
Commercial		—			—			1,762			1,762			287,404			289,166			—			1,762
Real estate—residential
Single family		—			—			—			—			209,740			209,740			—			—
Multi-family		—			—			—			—			50,612			50,612			—			—
Home equity lines		—			—			—			—			117,647			117,647			—			—
Consumer
Installment		—			—			—			—			3,916			3,916			—			—
Credit cards		—			—			—			—			288			288			—			—
	$	—		$	—		$	7,626		$	7,626		$	1,798,498		$	1,806,124		$	—		$	7,626
At December 31, 2013, 2012, and 2011, the Company had impaired loans on nonaccrual status of $2.3 million, $7.6 million, and $14.6 million, respectively. The valuation allowance for impaired loans for each of the years ended December 31, 2013 and 2012 was $0. For the years ended December 31, 2013, 2012, and 2011, the Company charged-off $0, $4.8 million, and $5.1 million, respectively, related to impaired loans for the portion of the outstanding principal balance which was unsecured based on the estimated fair value of the underlying collateral.
The average balance of impaired loans was $4.2 million, $11.3 million, and $10.3 million, for 2013, 2012, and 2011, respectively. Interest income that would have been recorded had these loans been performing for the years ended December 31, 2013, 2012, and 2011, would have been $626,000, $491,000, and $766,000, respectively. The interest income realized prior to these loans being placed on nonaccrual status for December 31, 2013, 2012, and 2011, was $5,000, $111,000, and $341,000, respectively. For each of the years ended December 31, 2013 and 2012, the Company did not have any accruing loans past due 90 days or more as to principal or interest payments.
Additional information on the Company's impaired loans that were evaluated for specific reserves as of December 31, 2013 and 2012, including the recorded investment on the statement of condition and the unpaid principal balance, is shown below:
Impaired Loans
At December 31, 2013
(In thousands)
	Recorded			Unpaid Principal			Related			Interest Income
	Investment			Balance			Allowance			Recognized
With no related allowance:
Commercial and industrial	$	814		$	814		$	—		$	23
Real estate—commercial
Owner occupied		—			—			—			—
Non-owner occupied		1,738			3,872			—			—
Real estate—construction
Residential		—			—			—			—
Commercial		775			2,928			—			—
Real estate—residential
Single family		—			—			—			—
Multi-family		—			—			—			—
Home equity lines		51			51			—			—
With related allowance:
Commercial and industrial	$	—		$	—		$	—		$	—
Real estate—commercial											—
Owner occupied		—			—			—			—
Non-owner occupied		—			—			—			—
Real estate—construction											—
Residential		—			—			—			—
Commercial		—			—			—			—
Real estate—residential											—
Single family		—			—			—			—
Multi-family		—			—			—			—
Home equity lines		—			—			—			—
By segment total:
Commercial and industrial	$	814		$	814		$	—		$	23
Real estate—commercial		1,738			3,872			—			—
Real estate—construction		775			2,928			—			—
Real estate—residential		—			—			—			—
Home equity lines		51			51			—			—
Total	$	3,378		$	7,665		$	—		$	23
The difference between the recorded investment and the unpaid principal balance in the above table is a result of partial loan charge-offs that the Company has recorded on these impaired loans.
Impaired Loans
At December 31, 2012
(In thousands)
	Recorded			Unpaid Principal			Related			Interest Income
	Investment			Balance			Allowance			Recognized
With no related allowance:
Commercial and industrial	$	2,064		$	2,985		$	—		$	269
Real estate—commercial
Owner occupied		—			—			—			—
Non-owner occupied		4,370			6,943			—			35
Real estate—construction
Residential		—			—			—			—
Commercial		2,012			5,449			—			469
Real estate—residential
Single family		—			—			—			—
Multi-family		—			—			—			—
Home equity lines		—			—			—			—
With related allowance:
Commercial and industrial	$	—		$	—		$	—		$	—
Real estate—commercial											—
Owner occupied		—			—			—			—
Non-owner occupied		—			—			—			—
Real estate—construction											—
Residential		—			—			—			—
Commercial		—			—			—			—
Real estate—residential											—
Single family		—			—			—			—
Multi-family		—			—			—			—
Home equity lines		—			—			—			—
By segment total:
Commercial and industrial	$	2,064		$	2,985		$	—		$	269
Real estate—commercial		4,370			6,943			—			35
Real estate—construction		2,012			5,449			—			469
Real estate—residential		—			—			—			—
Home equity lines		—			—			—			—
Total	$	8,446		$	15,377		$	—		$	773
In order to maximize the collection of certain loans, the Company will attempt to work with borrowers when necessary to extend or modify loan terms to better align with the borrower's ability to repay. Extensions and modifications to loans are made in accordance with the Company's policy and conform to regulatory guidance. Each occurrence is unique to the borrower and is evaluated separately. The Company considers regulatory guidelines when restructuring a loan to ensure that prudent lending practices are followed. As such, qualification criteria and payment terms consider the borrower's current and prospective ability to comply with the modified terms of the loan.
A modification is classified as a troubled debt restructuring ("TDR") if both of the following exist: (1) the borrower is experiencing financial difficulty and (2) the Company has granted a concession to the borrower. The Company determines that a borrower may be experiencing financial difficulty if the borrower is currently in default on any of its debt, or if the Company is concerned that the borrower may not be able to perform in accordance with the current terms of the loan agreement in the foreseeable future. Many aspects of the borrower's financial situation are assessed when determining whether they are experiencing financial difficulty, particularly as it relates to commercial borrowers due to the complex nature of the loan structure, business/industry risk, and borrower/guarantor structures. Concessions may include the reduction of an interest rate at a rate lower than current market rate for a new loan with similar risk, extension of the maturity date, reduction of accrued interest, or principal forgiveness. When evaluating whether a concession has been granted, the Company also considers whether the borrower has provided additional collateral or guarantors and whether such additions adequately compensate the Company for the restructured terms, or if the revised terms are consistent with those currently being offered to new loan customers. The assessments of whether a borrower is experiencing (or is likely to experience) financial difficulty and whether a concession has been granted is subjective in nature and management's judgment is required when determining whether a modification is a TDR.
Although each occurrence is unique to the borrower and is evaluated separately, for all portfolio segments, TDRs are typically modified through reductions in interest rates, reductions in payments, changing the payment terms from principal and interest to interest only, and/or extensions in term maturity.
Nonaccruing loans that are modified can be placed back on accrual status when both the principal and interest are current and it is probable that the Company will be able to collect all amounts due (both principal and interest) according to the terms of the loan agreement. The Company modified one loan as a TDR during the year ended December 31, 2013. The following table reconciles the beginning and ending balances on TDRs for the year ended December 31, 2013 and 2012, respectively:
Troubled Debt Restructurings
At December 31, 2013
(In thousands)
	Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
	Industrial			Commercial			Construction			Residential			Lines
Allowance for loan losses:
Beginning Balance, January 1, 2013	$	1,776		$	3,800		$	1,762		$	—		$	—		$	—		$	7,338
New TDRs		—			570			—			—			—			—			570
Increases to existing TDRs		—			—			—			—			—			—			—
Charge-Offs Post Modification		—			—			—			—			—			—			—
Sales, paydowns, or other decreases		(1,776	)		(2,632	)		(1,237	)		—			—			—			(5,645	)
Ending Balance, December 31, 2012	$	—		$	1,738		$	525		$	—		$	—		$	—		$	2,263
Troubled Debt Restructurings
At December 31, 2012
(In thousands)
	Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
	Industrial			Commercial			Construction			Residential			Lines
Allowance for loan losses:
Beginning Balance, January 1, 2012	$	3,497		$	9,098		$	2,750		$	—		$	—		$	—		$	15,345
New TDRs		—			—			—			—			—			—			—
Increases to existing TDRs		—			—			—			—			—			—			—
Charge-Offs Post Modification		(1,068	)		(3,749	)		—			—			—			—			(4,817	)
Sales, paydowns, or other decreases		(653	)		(1,549	)		(988	)		—			—			—			(3,190	)
Ending Balance, December 31, 2012	$	1,776		$	3,800		$	1,762		$	—		$	—		$	—		$	7,338
All of these TDRs are on nonaccrual as of December 31, 2013 and 2012, respectively, per the Company's policy for placing a loan on nonaccrual and are included in the impaired loans table above. Nonaccrual TDRs that are reasonably assured of repayment according to their modified terms may be returned to accrual status by the Company upon a detailed credit evaluation of the borrower's financial condition and prospects for repayment under the revised terms. Consistent with regulatory guidance, upon sustained performance and classification as a TDR over the Company's year-end, the loan will be removed from TDR status as long as the modified terms were market-based at the time of the modification.
As of December 31, 2013, the TDRs make up one relationship with the Bank. These loans are performing as expected post-modification. As of December 31, 2012, the TDRs make up three relationships with the Bank and were performing as expected post-modification. For restructured loans in the portfolio, the Company had no loan loss reserves for each of the years ended December 31, 2013 and 2012, respectively. There were no outstanding commitments to advance additional funds to customer relationships whose loans had been restructured for each of the years ended December 31, 2013 and 2012.
Loans modified as TDRs within the previous 12 months and for which there was a payment default during the period are calculated by first identifying TDRs that defaulted during the period and then determining whether they were modified within the 12 months prior to the default. For the year ended December 31, 2013, one loan identified as a TDR had a payment default within the last twelve months. For the year ended December 31, 2012, no loans identified as TDRs had a payment default within the last twelve months.
One of the most significant factors in assessing the credit quality of the Company's loan portfolio is the risk rating. The Company uses the following risk ratings to manage the credit quality of its loan portfolio: pass, substandard, doubtful and loss. During 2011, the Company added an additional risk rating, other loans especially mentioned ("OLEM"), for the monitoring of credit quality. Other loans especially mentioned are those loans in which the borrower exhibits potential weakness that may, if not corrected or reversed, weaken the bank's credit position at some future date. These loans may not show problems as yet due to the borrower's apparent ability to service the debt, but special circumstances surround the loans of which the Bank's management should be aware. Substandard risk rated loans are those loans whose full final collectability may not appear to be a matter for serious doubt, but which nevertheless have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt and require close supervision by management. Loans that have a risk rating of doubtful have all the weakness inherent in one graded substandard with the added provision that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and value, highly questionable. A loss loan is one that is considered uncollectible and will be charged-off immediately. All other loans not rated OLEM, substandard, doubtful or loss are considered to have a pass risk rating. Substandard and doubtful risk rated loans are evaluated for impairment. The following table presents a summary of the risk ratings by portfolio segment and class segment at December 31, 2013 and 2012, respectively.
Internal Risk Rating Grades
At December 31, 2013
(In thousands)
	Pass			OLEM			Substandard			Doubtful			Loss
Commercial and industrial	$	217,755		$	587		$	814		$	—		$	—
Real estate—commercial
Owner occupied		279,631			—			—			—			—
Non-owner occupied		753,872			13,338			1,738			—			—
Real estate—construction
Residential		120,144			—			—			—			—
Commercial		242,144			—			775			—			—
Real estate—residential
Single family		213,537			8			—			—			—
Multi-family		85,939			—			—			—			—
Home equity lines		109,430			—			51			—			—
Consumer
Installment		3,912			—			—			—			—
Credit cards		247			—			—			—			—
	$	2,026,611		$	13,933		$	3,378		$	—		$	—
Internal Risk Rating Grades
At December 31, 2012
(In thousands)
	Pass			OLEM			Substandard			Doubtful			Loss
Commercial and industrial	$	220,266		$	631		$	2,064		$	—		$	—
Real estate—commercial
Owner occupied		255,343			—			—			—			—
Non-owner occupied		542,983			27,260			1,657			—			—
Real estate—construction
Residential		84,551			—			—			—			—
Commercial		281,163			3,278			4,725			—			—
Real estate—residential
Single family		209,740			—			—			—			—
Multi-family		50,612			—			—			—			—
Home equity lines		117,647			—			—			—			—
Consumer
Installment		3,916			—			—			—			—
Credit cards		288			—			—			—			—
	$	1,766,509		$	31,169		$	8,446		$	—		$	—
Loans rated substandard and doubtful totaling $3.4 million and $8.4 million were evaluated for impairment at December 31, 2013 and 2012, respectively. For each of the years ended December 31, 2013 and 2012, there was no related allowance for impaired loans. Loans receivable—evaluated for impairment and measured at fair value on a non-recurring basis, net of the related allowance is $3.4 million and $8.4 million for the years ended December 31, 2013 and 2012, respectively (see Note 23 to the notes to consolidated financial statements for additional information).

Other_Real_Estate_Owned

Other Real Estate Owned	12 Months Ended
	Dec. 31, 2013
Other Real Estate Owned	'
Other Real Estate Owned	'
	(6) Other Real Estate Owned
	The Company had no other real estate owned as of December 31, 2013 and 2012. The balances in other real estate owned are at lower of carrying value or fair value less any costs to sell on the statement of condition. The fair value is determined by obtaining an updated appraisal of the foreclosed property which is then discounted for estimated selling costs.
	The Company recorded impairment charges of $911,000 during 2011 related to the decrease in fair values of the properties held in other real estate owned. No such expense was recorded during 2013 and 2012. The Company recorded a net gain on the sales of real estate of $30,000 for the year ended December 31, 2013. For the years ended December 31, 2012 and 2011, the Company recorded net losses on the sales of real estate of $333,000 and $0, respectively.

Loans_Held_for_Sale

Loans Held for Sale	12 Months Ended
	Dec. 31, 2013
Loans Held for Sale	'
Loans Held for Sale	'
	(7) Loans Held for Sale
	The loans held for sale portfolio at December 31, 2013 and 2012, consisted of the following:
	(In thousands)	2013		2012
	Residential	$	311,493	$	728,973
	Construction-to-permanent		60,168		44,399
			371,661		773,372
	Net deferred costs		2,332		12,379
	Loans held for sale, net	$	373,993	$	785,751
	Loans that are classified as construction-to-permanent are those loans that provide variable rate financing for customers to construct their residences. Once the home has been completed, the loan converts to fixed rate financing and is sold into the secondary market.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Intangible Assets	'
Goodwill and Other Intangible Assets	'
	(8) Goodwill and Other Intangible Assets
	The Company performs its annual recoverability assessment during the third calendar quarter for its mortgage banking reporting unit. The Company adopted the provisions of ASU No. 2011-08, Testing Goodwill for Impairment ("ASU No. 2011-08"). For purposes of performing the recoverability assessment, ASU No. 2011-08 requires an entity to assess all relevant events and circumstances in evaluating whether it is more likely than not that the fair value of the mortgage banking reporting unit is less than its carrying value. After evaluating all relevant facts and circumstances, the Company determined that it is more likely than not that the fair value of the mortgage banking reporting unit exceeds its carrying value and no goodwill impairment was indicated for the year ended December 31, 2013.
	Information concerning amortizable intangibles follows:
		Mortgage Banking				Wealth Management				Total
						and Trust Services
	(In thousands)	Gross		Accumulated		Gross		Accumulated		Gross		Accumulated
		Carrying		Amortization		Carrying		Amortization		Carrying		Amortization
		Amount				Amount				Amount
	Balance at December 31, 2011	$	1,781	$	1,435	$	616	$	616	$	2,397	$	2,051
	2012 activity:
	Customer relationship intangibles		—		198		—		—		—		198
	Trade name		—		—		—		—		—		—
	Balance at December 31, 2012	$	1,781	$	1,633	$	616	$	616	$	2,397	$	2,249
	2013 activity:
	Customer relationship intangibles		—		148		—		—		—		148
	Trade name		—		—		—		—		—		—
	Balance at December 31, 2013	$	1,781	$	1,781	$	616	$	616	$	2,397	$	2,397
	The aggregate amortization expense for 2013, 2012, and 2011, was $148,000, $198,000, and $198,000, respectively. There is no additional amortization expense as the Company's other identified intangibles are fully amortized.
	The carrying amount of goodwill for the years ended December 31, 2013 and 2012 were as follows:
	(In thousands)	Commercial		Mortgage		Total
		Banking		Banking
	Balance at December 31, 2013 and 2012	$	24	$	10,120	$	10,144

Premises_and_Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2013
Premises and Equipment	'
Premises and Equipment	'
	(9) Premises and Equipment
	The components of premises and equipment at December 31, 2013 and 2012 were as follows:
	(in thousands)	2013			2012
	Land	$	4,350		$	4,350
	Buildings		6,680			6,680
	Furniture and equipment		25,478			22,509
	Leasehold improvements		10,807			9,206
	Total cost		47,315			42,745
	Less accumulated depreciation and amortization		(26,926	)		(23,553	)
	Premises and equipment, net	$	20,389		$	19,192
	Depreciation expense for the years ended December 31, 2013, 2012, and 2011, was $3.2 million, $2.7 million, and $2.5 million, respectively.
	The Company has entered into operating leases for office space over various terms. The leases generally have options to renew and are subject to annual increases as well as allocations of real estate taxes and certain operating expenses.
	Minimum future rental payments under the no cancelable operating leases, as of December 31, 2013 were as follows:
	Year ending December 31,	Amount
		(In thousands)
	2014	$	8,408
	2015		6,933
	2016		5,372
	2017		3,830
	2018		3,437
	Thereafter		8,900
		$	36,880
	The total rent expense was $7.9 million, $6.6 million, and $5.5 million for the years ended December 31, 2013, 2012, and 2011, respectively, and is recorded in occupancy expense on the consolidated statements of income.
	The Company subleased excess office space to third parties. Future minimum lease payments under noncancelable subleasing arrangements as of December 31, 2013 were as follows:
	Year ending December 31,	Amount
		(In thousands)
	2014	$	47
	2015		49
	2016		50
	2017		52
	2018		31
	Thereafter		—
		$	229
	The total rent income was $158,000, $166,000, and $187,000, in 2013, 2012, and 2011, respectively, and is recorded as a reduction of occupancy expense in the consolidated statements of income.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2013
Deposits	'
Deposits	'
	(10) Deposits
	Deposits consist of the following at December 31, 2013 and 2012:
	(In thousands)	2013		2012
	Non-interest bearing demand deposits	$	433,749	$	351,815
	Interest bearing deposits:
	Interest checking		398,136		347,697
	Money market and statement savings		475,707		430,391
	Certificates of deposit		751,267		1,113,855
	Total interest-bearing deposits		1,625,110		1,891,943
	Total deposits	$	2,058,859	$	2,243,758
	Interest expense by deposit categories is as follows:
	(In thousands)	2013		2012		2011
	Interest checking	$	2,170	$	2,457	$	255
	Money market and statement savings		1,389		1,689		1,534
	Certificates of deposit		9,457		10,693		11,771
	Total interest expense	$	13,016	$	14,839	$	13,560
	The aggregate amount of certificates of deposit, each with a minimum denomination of $100,000 was $350.0 million and $565.1 million at December 31, 2013 and 2012, respectively.
	At December 31, 2013, the scheduled maturities of certificates of deposit with a minimum denomination of $100,000 were as follows:
	Maturities:
	(In thousands)	Fixed Term		No-Penalty		Total
	Three months or less	$	116,690	$	7,196	$	123,886
	Over three months through six months		43,466		2,455		45,921
	Over six months through twelve months		46,909		2,105		49,014
	Over twelve months		90,186		40,970		131,156
		$	297,251	$	52,726	$	349,977
	No-penalty certificates of deposit can be redeemed at anytime at the request of the depositor.
	Brokered certificates of deposits at December 31, 2013 and 2012 were $301.2 and $616.6 million, respectively.
	At December 31, 2013, the scheduled maturities of certificates of deposit were as follows:
	(In thousands)
	2014	$	428,637
	2015		157,204
	2016		97,926
	2017		45,997
	2018		18,437
	2019		3,066
		$	751,267

Other_Borrowed_Funds

Other Borrowed Funds	12 Months Ended
	Dec. 31, 2013
Other Borrowed Funds	'
Other Borrowed Funds	'
	(11) Other Borrowed Funds
	At December 31, 2013 and 2012, other borrowed funds consisted of the following:
	(In thousands)	2013			2012
	Fixed rate FHLB advances	$	315,000		$	215,000
	Federal funds purchased		45,000			50,000
	Customer repurchase agreements		94,613			106,656
	Payable to Statutory Trust I		20,619			20,619
		$	475,232		$	392,275
	The Company had fixed rate advances from the FHLB totaling $315.0 million and $215.0 million at December 31, 2013 and 2012, respectively. These advances mature through 2022 and have interest rates ranging from 0.17% to 4.85%.
	The contractual maturities of the fixed rate advances for each of December 31, 2013 and 2012 were as follows:
	(In thousands)
	At December 31, 2013
	Type of Advance	Interest Rate		Advance Term		Maturity Date			Balance
	Fixed Rate Credit	0.17%		1 month			2014		$	100,000
	Fixed Rate Hybrid	3.37 - 3.50%		48 months			2015			10,000
	Fixed Rate Hybrid	2.03%		48 months			2016			10,000
	Fixed Rate Hybrid	3.45%		60 months			2016			5,000
	Convertible	3.93 - 4.55%		120 months			2016			50,000
	Fixed Rate Hybrid	2.46 - 2.65%		60 months			2017			30,000
	Convertible	3.10 - 4.85%		120 months			2017			60,000
	Convertible	2.81 - 4.00%		120 months			2018			20,000
	Fixed Rate Hybrid	2.98%		84 months			2019			10,000
	Fixed Rate Hybrid	3.80 - 4.01%		120 months			2022			20,000
	Total FHLB Advances	3.09%							$	315,000
	(In thousands)
	At December 31, 2012
	Type of Advance	Interest Rate		Advance Term		Maturity Date			Balance
	Fixed Rate Hybrid	3.37 - 3.50%		48 months			2015		$	10,000
	Fixed Rate Hybrid	2.03%		48 months			2016			10,000
	Fixed Rate Hybrid	3.45%		60 months			2016			5,000
	Convertible	3.93 - 4.55%		120 months			2016			50,000
	Fixed Rate Hybrid	2.46 - 2.65%		60 months			2017			30,000
	Convertible	3.10 - 4.85%		120 months			2017			60,000
	Convertible	2.81 - 4.00%		120 months			2018			20,000
	Fixed Rate Hybrid	2.98%		84 months			2019			10,000
	Fixed Rate Hybrid	3.80 - 4.01%		120 months			2022			20,000
	Total FHLB Advances	3.61%							$	215,000
	The average balances of FHLB advances for the years ended December 31, 2013 and 2012 were $217.3 million and $230.5 million, respectively. The maximum amount outstanding at any month-end for the years ended December 31, 2013 and 2012 was $315.0 million and $295.0 million, respectively. Total interest expense on FHLB advances for the years ended December 31, 2013, 2012, and 2011 was $7.9 million, $8.2 million, and $9.6 million, respectively.
	Customer repurchase agreements generally mature within one to four days and are reflected in the consolidated statements of financial condition at the amount of cash received. The Company's deposit customers are the counterparties to these types of funding arrangements. The Company pledges investment securities to collateralize these borrowings. At December 31, 2013 and 2012, the Company had repurchase agreements of $94.6 million and $106.7 million, respectively. The weighted-average interest rate of these customer repurchase agreements was 0.16%, 0.21%, and 0.24%, at December 31, 2013, 2012, and 2011, respectively. The average balances of customer repurchase agreements during 2013, 2012, and 2011 were $104.8 million, $117.3 million, and $87.0 million, respectively, and the maximum amount outstanding at any month-end during 2013, 2012, and 2011, was $148.1 million, $160.1 million, and $106.7 million, respectively. Interest expense on customer repurchase agreements for 2013, 2012, and 2011, was $165,000, $249,000, and $210,000, respectively.
	At December 31, 2013 and 2012, the Company had federal funds purchased of $45.0 million and $50.0 million, respectively, outstanding with a weighted average interest rate of 0.43% and 0.38%, respectively. Interest expense on federal funds purchased in 2013, 2012, and 2011, was $24,000, $35,000, and $33,000, respectively.
	The Company has a line of credit at the Federal Reserve discount window in the amount of $94.5 million at December 31, 2013, none of which was drawn as of that date. There was no interest expense related to the discount window in 2013, 2012, and 2011.
	In July 2004, the Company formed a wholly-owned subsidiary, Cardinal Statutory Trust I (the "Trust"), for the purpose of issuing $20.0 million of floating rate junior subordinated deferrable interest debentures ("trust preferred securities"). These trust preferred securities are due in 2034 and have an interest rate of LIBOR (London Interbank Offered Rate) plus 2.40%, which adjusts quarterly. At December 31, 2013, the interest rate on trust preferred securities was 2.64%. These securities are redeemable at par beginning September 2009. The Company has guaranteed payment of these securities. The $20.6 million payable by the Company to the Trust is included in other borrowed funds. The Trust is an unconsolidated subsidiary since the Company is not the primary beneficiary of this entity. The additional $619,000 that is payable by the Company to the Trust represents the Company's unfunded capital investment in the Trust. The Company utilized the proceeds from the issuance of the trust preferred securities to make a capital contribution into the Bank. Interest expense on the trust preferred securities in 2013, 2012, and 2011, was $693,000, $834,000, and $816,000, respectively.
	During 2011, the Company extinguished $55.0 million in FHLB advances which had an average cost of 2.87%, or $1.6 million annually. As part of the prepayment arrangement with the FHLB, the Company paid a one-time penalty of $2.3 million related to these advances. The Company replaced these advances with lower-cost longer-term funding from the FHLB. This expense is reported in the non-interest expense section of the Company's consolidated statements of income and no such expense occurred during 2013 or 2012.
	The scheduled maturities of other borrowed funds at December 31, 2013 were as follows:
	(In thousands)	2014			2015			2016			2017		2018		2019 and
															Thereafter
	FHLB advances	$	100,000		$	10,000		$	65,000		$	90,000	$	20,000	$	30,000
	Customer repurchase agreements		94,613			—			—			—		—		—
	Federal funds sold		45,000			—			—			—		—		—
	Payable to Statutory Trust I		—			—			—			—		—		20,619
		$	239,613		$	10,000		$	65,000		$	90,000	$	20,000	$	50,619

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Taxes	'
Income Taxes	'
	(12) Income Taxes
	The Company and its subsidiaries file consolidated federal tax returns on a calendar-year basis. For the years ended December 31, 2013, 2012, and 2011, the Company recorded income tax expense of $12.2 million, $22.7 million, and $14.1 million, respectively.
	The provision for income tax expense is reconciled to the amount computed by applying the federal corporate tax rate to income before taxes as follows:
	(In thousands)	2013			2012			2011
	Income tax at federal corporate rate of 35%	$	13,189		$	23,784		$	14,742
	Change in valuation allowance		245			671			—
	Change in the carrying rate of deferred tax assets and liabilities		—			—			1
	Expected state tax benefit of losses of nonbank entities		—			—			—
	State tax expense, net of federal tax benefit		77			226			263
	Nontaxable income		(1,466	)		(2,152	)		(1,152	)
	Nondeductible expenses		184			400			27
	Other		(54	)		(271	)		241
		$	12,175		$	22,658		$	14,122
	The components of income tax expense are as follows:
	(In thousands)	2013			2012			2011
	Included in net income
	Current
	Federal	$	14,432		$	16,355		$	12,675
	State		609			486			361
	Total current		15,041			16,841			13,036
	Deferred
	Federal		(2,799	)		5,695			1,057
	State		(67	)		122			29
	Total deferred		(2,866	)		5,817			1,086
	Total included in net income	$	12,175		$	22,658		$	14,122
	Included in shareholders' equity:
	Deferred tax expense related to the change in the net unrealized gain on investment securities available for sale	$	(5,064	)	$	391		$	4,468
	Deferred tax expense (benefit) related to the change in the net unrealized gain (loss) on derivative instruments designated as cash flow hedges		589			470			(572	)
	Total included in shareholders' equity	$	(4,475	)	$	861		$	3,896
	The tax effects of temporary differences between the financial reporting basis and income tax basis of assets and liabilities relate to the following:
	(In thousands)	2013			2012
	Deferred tax assets:
	Allowance for loan losses	$	9,988		$	9,761
	Net operating state loss carryforwards		2,490			2,258
	Unrealized losses on derivative instruments designated as cash flow hedges		22			611
	Deferred compensation		5,424			3,965
	Other		991			1,999
	Total gross deferred tax assets		18,915			18,594
	Less valuation allowance		(2,490	)		(2,258	)
	Net deferred tax assets		16,425			16,336
	Deferred tax liabilities:
	Unrealized gains on investment securities available-for-sale		(2,740	)		(7,805	)
	Goodwill and intangibles, net		(601	)		(149	)
	Fair value adjustments		(5,910	)		(8,751	)
	Depreciation		(926	)		(865	)
	Prepaid expenses		(190	)		(15	)
	Loan origination costs		(663	)		(697	)
	Total gross deferred tax liabilities		(11,030	)		(18,282	)
	Net deferred tax asset (liability)	$	5,395		$	(1,946	)
	Deferred tax assets and liabilities are recognized for the tax effects of differing carrying values of assets and liabilities for tax and financial statement purposes that will reverse in future periods. When uncertainty exists concerning the recoverability of a deferred tax asset, the carrying value of the asset may be reduced by a valuation allowance. Valuation allowances of $2.5 million and $2.3 million for December 31, 2013 and 2012, respectively, have been established for deferred tax assets. This valuation allowance relates primarily to the state net operating losses of the parent company, CWS and Wilson/Bennett as realization is dependent upon generating future taxable income within those entities and in the specific jurisdiction. There is uncertainty concerning the recoverability of these state net operating losses as the entities which own these losses have never operated profitably and future profitability is uncertain. Management believes that future operations of the Company will generate sufficient taxable income to realize the net deferred tax assets at each of December 31, 2013 and 2012. The Company has state net operating loss carryforwards of $41.5 million that begin to expire in 2017.
	As of December 31, 2013 and 2012, the Company had no unrecognized tax benefits. The Company had no interest expense or tax penalties related to uncertain tax positions during the years ended December 31, 2013 and 2012. If the Company had such expenses, they would be classified in the consolidated statements of income as part of the provision for income tax expense.

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities	'
Derivative Instruments and Hedging Activities	'
	(13) Derivative Instruments and Hedging Activities
	Forward Mortgage Loan Sales Commitments and Interest Rate Lock Commitments
	The Company enters into rate lock commitments with its mortgage customers. The Company is also a party to forward mortgage loan sales contracts to sell loans servicing released. The rate lock commitment and forward sale agreement are undesignated derivatives and marked to fair value through earnings. The fair value of the rate lock derivative includes the servicing premium and the interest spread for the difference between retail and wholesale mortgage rates. Realized and unrealized gains on mortgage banking activities presents the gain recognized for the period presented and associated with these elements of fair value. On the date the mortgage loan closes, the loan held for sale is designated as the hedged item in a cash flow hedge relationship and the forward loan sale commitment is designated as the hedging instrument.
	At December 31, 2013, accumulated other comprehensive income included an unrealized gain, net of tax, of $1.1 million related to forward loan sale contracts designated as the hedging instrument in the cash flow hedge. At December 31, 2012, accumulated other comprehensive income included an unrealized gain, net of tax, of $785,000 related to forward loan sale contracts designated as the hedging instrument in the cash flow hedge. Loans held for sale are generally sold within sixty days of closing and, therefore, substantially all of the amount recorded in accumulated other comprehensive income at December 31, 2013 which is related to the Company's cash flow hedges will be recognized in earnings during the first quarter of 2014. During 2013, 2012, and 2011, the Company recognized minimal amounts due to hedge ineffectiveness.
	At December 31, 2013, the Company had $210.9 million in residential mortgage rate lock commitments and associated forward sales and $293.2 million in forward loan sales associated with $374.0 million of loans that had closed and were presented as held for sale. At December 31, 2013, the derivative asset was $16.5 million and the derivative liability was $5.7 million.
	At December 31, 2012, the Company had $481.7 million in residential mortgage rate lock commitments and associated forward sales and $723.8 million in forward loan sales associated with $785.8 million of loans that had closed and were presented as held for sale. At December 31, 2012, the derivative asset was $27.2 million and the derivative liability was $4.2 million.
	Interest Rate Risk Management—Cash Flow Hedging Instruments
	The Company uses long-term variable rate debt as a source of funds for use in the Company's lending and investment activities and other general business purposes. These debt obligations expose the Company to variability in interest payments due to changes in interest rates. If interest rates increase, interest expense increases. Conversely, if interest rates decrease, interest expense decreases. The Company believes it is prudent to limit the variability of a portion of its interest payments and, therefore, generally hedges a portion of its variable-rate interest payments. To meet this objective, the Company entered into interest rate swap agreements whereby the Company receives variable interest rate payments and makes fixed interest rate payments during the contract period.
	At December 31, 2012, information pertaining to outstanding interest rate swap agreements used to hedge variable rate debt (trust preferred securities which is included in other borrowed funds on the statement of condition) is shown below. These interest rate swap agreements matured during 2013.
	(Dollars in thousands)	2012
	Notional amount	$	10,000
	Weighted average pay rate		3.97	%
	Weighted average receive rate		1.54	%
	Weighted average maturity in years		1 years
	Unrealized gain (loss) relating to interest rate swaps	$	119
	These agreements provided for the Company to receive payments at a variable rate determined by a specific index (three month LIBOR) in exchange for making payments at a fixed rate. At December 31, 2012, the unrealized loss relating to interest rate swaps designated as hedging instruments of the variability of cash flows associated with long-term debt are reported in other comprehensive income. These amounts are subsequently reclassified into interest expense as a yield adjustment in the same period in which the related interest on the long-term debt affects earnings. The cash flow hedging relationships were highly effective during 2012 and the amount of ineffectiveness was de minimus.
	Interest Rate Risk Management—Fair Value Hedging Instruments
	The Company originates fixed and variable rate loans. Fixed rate loans expose the Company to variability in their fair value due to changes in the level of interest rates. The Company believes it is prudent to limit the variability in the fair value of a portion of its fixed rate loan portfolio. The Company also believes it is economically prudent to keep hedge coverage ratios at acceptable risk levels, which may vary depending on current and expected interest rate movement. It is the Company's objective to hedge the change in fair value of fixed rate loans at coverage levels that are appropriate, given anticipated or existing interest rate levels and other market considerations, as well as the relationship of change in this asset to other assets of the Company. To meet this objective, the Company utilizes interest rate swaps as an asset/liability management strategy to hedge the change in value of the loans due to changes in expected interest rate assumptions. The Company entered into an interest rate swap to hedge the change in fair value of one loan receivable. This interest rate swap agreement requires a series of floating rate payments in exchange for receiving a series of fixed rate payments.
	At December 31, 2012, the information pertaining to the single outstanding interest rate swap agreement used to hedge fixed-rate loans is shown below. This interest rate swap agreement matured during 2013.
	(Dollars in thousands)	2012
	Notional amount	$	11,174
	Weighted average pay rate		5.42	%
	Weighted average receive rate		0.25	%
	Weighted average maturity in years		1 year
	Unrealized loss relating to interest rate swaps	$	478
	The agreement provided for the Company to make payments at a variable rate determined by a specified index (one month LIBOR) in exchange for receiving payments at a fixed rate.
	At December 31, 2012, the unrealized loss relating to use of interest rate swap was recorded in net income with an offsetting gain for the fair value of the loan. The fair value of the loan is included in loans receivable on the statement of condition. The hedge relationship has been effective since inception and is forecasted to remain effective. Ineffectiveness reflected in earnings is immaterial for the periods presented.

Fair_Value_of_Derivative_Instr

Fair Value of Derivative Instruments and Hedging Activities

12 Months Ended

Dec. 31, 2013

Fair Value of Derivative Instruments and Hedging Activities

'

Fair Value of Derivative Instruments and Hedging Activities

'

(14) Fair Value of Derivative Instruments and Hedging Activities

The following tables disclose the derivative instruments' location on the Company's statement of condition and the fair value of those instruments at December 31, 2013 and 2012. In addition, the gains and losses related to these derivative instruments is provided for the years ended December 31, 2013 and 2012.

Derivative Instruments and Hedging Activities

At December 31, 2013

(in thousands)

Asset Derivatives

Liability Derivatives

Balance Sheet

Fair Value

Balance Sheet

Fair Value

Location

Location

Derivatives Designated as Hedging Instruments

Forward Loan Sales Commitments

Accrued Interest

5,489

Accrued Interest

4,043

Receivable and

Payable and Other

Other Assets

Liabilities

Total Derivatives Designated as Hedging Instruments

5,489

4,043

Derivatives Not Designated as Hedging Instruments

Rate Lock and Forward Loan Sales Commitments

Accrued Interest

10,989

Accrued Interest

9

Receivable and

Payable and Other

Other Assets

Liabilities

Rate Lock Commitments

Accrued Interest

9

Accrued Interest

1,554

Receivable and

Payable and Other

Other Assets

Liabilities

Total Derivatives Not Designated as Hedging Instruments

10,998

1,563

Total Derivatives

$

16,487

$

5,606

Derivative Instruments and Hedging Activities

At December 31, 2012

(in thousands)

Asset Derivatives

Liability Derivatives

Balance Sheet

Fair Value

Balance Sheet

Fair Value

Location

Location

Derivatives Designated as Hedging Instruments

Interest Rate Swaps

Accrued Interest

$

—

Accrued Interest

$

616

Receivable and

Payable and Other

Other Assets

Liabilities

Forward Loan Sales Commitments

Accrued Interest

2,136

Accrued Interest

3,623

Receivable and

Payable and Other

Other Assets

Liabilities

Total Derivatives Designated as Hedging Instruments

2,136

4,239

Derivatives Not Designated as Hedging Instruments

Rate Lock and Forward Loan Sales Commitments

Accrued Interest

24,657

Accrued Interest

449

Receivable and

Payable and Other

Other Assets

Liabilities

Rate Lock Commitments

Accrued Interest Receivable and Other Assets

449

Accrued Interest Payable and Other Liabilities

91

Total Derivatives Not Designated as Hedging Instruments

25,106

540

Total Derivatives

$

27,242

$

4,779

Impact of Derivative Instruments on the Statement of Income

For the Year Ended December 31, 2013

(in thousands)

Derivatives in Fair Value Hedging

Locations of Gain

Amount of Gain

Location of Gain

Amount of Gain

Relationships

(Loss)

(Loss)

(Loss)

(Loss) Recognized in

Recognized

Recognized

Recognized

Income on

in Income on

in Income on

in Income on

Hedged Item

Derivative

Derivative

Hedged Item

Interest Rate Swaps

Other Income

$

478

Other Income

$

(478

)

Total

$

478

$

(478

)

Derivatives in Cash Flow

Amount of Gain

Location of

Amount of Gain (Loss)

Location of Gain

Amount of Gain

Hedging Relationships

(Loss) Recognized

Gain (Loss)

Reclassified

(Loss) Recognized in

(Loss)

in Other

Reclassified

from Accumulated

Income on

Recognized

Comprehensive

from Accumulated

Other

Derivative

in Income on

Income on

Other

Comprehensive

(Ineffective Portion

Derivative

Derivative (Effective

Comprehensive

Income into

and Amount

(Ineffective

Portion)

Income into

Income (Effective

Excluded from

Portion and

Income (Effective

Portion)

Effectiveness

Amount

Portion)

Testing)

Excluded

from

Effectiveness

Testing)

Interest Rate Swaps

$

89

Other Income

$

—

Other Income

$

—

Forward Loan Sales Commitments

1,020

Other Income

3,774

Other Income

—

Total

$

1,109

$

3,774

$

—

Derivatives Not Designated as Hedging Instruments

Amount of Gain

Location of Gain (Loss)

(Loss) Recognized

Recognized in Income on Derivative

in Income on

Derivative

Interest Rate Lock Commitment

$

59,566

Realized and unrealized gains on mortgage banking activities

Forward Loan Sales Commitments

6,421

Other Income

Rate Lock Commitments

(6,421

)

Other Income

Total

$

59,566

Impact of Derivative Instruments on the Statement of Income

For the Year Ended December 31, 2012

(in thousands)

Derivatives in Fair Value Hedging

Locations of Gain

Amount of Gain

Location of Gain

Amount of Gain

Relationships

(Loss) Recognized

(Loss) Recognized

(Loss) Recognized in

(Loss) Recognized in

in Income

in Income

Income on

Income on

on Derivative

on Derivative

Hedged Item

Hedged Item

Interest Rate Swaps

Other Income

$

522

Other Income

$

(522

)

Total

$

522

$

(522

)

Derivatives in Cash Flow

Amount of Gain

Location of Gain

Amount of Gain

Location of Gain

Amount of Gain

Hedging Relationships

(Loss) Recognized

(Loss) Reclassified

(Loss) Reclassified

(Loss) Recognized in

(Loss)

in Other

from Accumulated

from Accumulated

Income on

Recognized in

Comprehensive

Other

Other Comprehensive

Derivative

Income on

Income on Derivative

Comprehensive

Income into

(Ineffective

Derivative

(Effective

Income into

Income (Effective

Portion and

(Ineffective

Portion)

Income (Effective

Portion)

Amount Excluded

Portion and

Portion)

from Effectiveness

Amount

Testing)

Excluded

from Effectiveness

Testing)

Interest Rate Swaps

$

119

Other Income

$

—

Other Income

$

—

Forward Loan Sales Commitments

666

Other Income

(756

)

Other Income

—

Total

$

785

$

(756

)

$

—

Derivatives Not Designated as Hedging Instruments

Amount of Gain

Location of Gain (Loss)

(Loss) Recognized

Recognized in Income on Derivative

in Income

on Derivative

Interest Rate Lock Commitment

$

79,397

Realized and unrealized gains on mortgage banking activities

Forward Loan Sales Commitments

(2,875

)

Other Income

Rate Lock Commitments

2,875

Other Income

Total

$

79,397

Regulatory_Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2013
Regulatory Matters	'
Regulatory Matters	'
	(15) Regulatory Matters
	The Bank, as a state-chartered bank, is subject to the dividend restrictions established by the State Corporation Commission of the Commonwealth of Virginia. Under such restrictions, the Bank may not, without the prior approval of the Bank's primary regulator, declare dividends in excess of the sum of the current year's earnings (as defined) plus the retained earnings (as defined) from the prior two years. At December 31, 2013, there were approximately $173.8 million of accumulated earnings at the Bank which could be paid as dividends to the Company.
	The Bank is required to maintain a minimum non-interest earning clearing balance with the Federal Reserve Bank. The average amount of the clearing balance was $1.0 million for 2013.
	The Federal Deposit Insurance Corporation Improvement Act of 1991 ("FDICIA") requires banking regulators to stratify banks into five quality tiers based upon their relative capital strengths and increase the regulation of the weaker institutions. The key measures of capital are: (1) total capital (Tier I capital plus the allowance for loan losses up to certain limitations) as a percent of total risk-weighted assets, (2) Tier I capital (as defined) as a percent of total risk-weighted assets (as defined), and (3) Tier I capital (as defined) as a percent of total average assets (as defined).
	The regulatory capital of the Company at December 31, 2013 and 2012 is as follows:
		Actual					For Capital						To Be Well
							Adequacy Purposes						Capitalized Under
													Prompt Corrective
													Action Provisions
		Amount		Ratio			Amount			Ratio			Amount			Ratio
	At December 31, 2013
	(In thousands)
	Total capital to risk weighted assets	$	349,894		12.89	%	$	217,111	³		8	%	$	271,389	³		10	%
	Tier I capital to risk weighted assets		321,513		11.85	%		108,555	³		4	%		162,833	³		6	%
	Tier I capital to average assets		321,513		11.7	%		109,928	³		4	%		137,410	³		5	%
	At December 31, 2012
	(In thousands)
	Total capital to risk weighted assets	$	328,547		13.04	%	$	201,530	³		8	%	$	251,913	³		10	%
	Tier I capital to risk weighted assets		300,732		11.94	%		100,765	³		4	%		151,148	³		6	%
	Tier I capital to average assets		300,732		10.49	%		114,693	³		4	%		143,366	³		5	%
	The regulatory capital of the Bank at December 31, 2013 and 2012 is as follows:
		Actual					For Capital						Capitalized Under
							Adequacy Purposes						Prompt Corrective
													Action Provisions
		Amount		Ratio			Amount			Ratio			Amount			Ratio
	At December 31, 2013
	(In thousands)
	Total capital to risk-weighted assets	$	343,392		12.73	%	$	215,733	³		8	%	$	269,666	³		10	%
	Tier I capital to risk-weighted assets		315,011		11.68	%		107,867	³		4	%		161,800	³		6	%
	Tier I capital to average assets		315,011		11.54	%		109,212	³		4	%		136,515	³		5	%
	At December 31, 2012
	(In thousands)
	Total capital to risk-weighted assets	$	315,511		12.59	%	$	200,440	³		8	%	$	250,550	³		10	%
	Tier I capital to risk-weighted assets		287,695		11.48	%		100,220	³		4	%		150,330	³		6	%
	Tier I capital to average assets		287,695		10.08	%		114,196	³		4	%		142,745	³		5	%
	At December 31, 2013 and 2012, the Company and the Bank met all regulatory capital requirements and are considered "well-capitalized" from a regulatory perspective.
	George Mason is also required to maintain defined capital levels under Department of Housing and Urban Development guidelines. At December 31, 2013 and 2012, George Mason maintained capital in excess of these required guidelines.

RelatedParty_Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2013
Related-Party Transactions	'
Related-Party Transactions	'
	(16) Related-Party Transactions
	Certain directors, officers and employees and/or their related business interests are at present, as in the past, banking customers in the ordinary course of business of the Company. As such, the Company has had, and expects to have in the future, banking transactions in the ordinary course of its business with directors, officers, principal shareholders and their associates, on substantially the same terms, including interest rates and collateral on loans, as those prevailing at the same time for comparable transactions with non-related parties and do not involve more than normal risk of collectability or present other unfavorable features.
	Analysis of activity for loans to related parties follows:
	(In thousands)	2013			2012
	Balance, beginning of year	$	32,604		$	34,988
	New loans		292			1,236
	Loans paid off or paid down		(4,599	)		(3,620	)
	Balance, end of year	$	28,297		$	32,604
	George Mason leases its headquarters office space from a director of the Company who is the manager and a 3.1% owner of the limited liability company that owns the building in which the space is leased. The lease was extended during 2013 so that it now expires June 30, 2019. The rent that George Mason pays for the use of this space under the existing lease ranges from $1.0 to $1.2 million annually over the next six years. Rent payments totaled $789,000 in 2013, $912,000 in 2012, and $738,000 in 2011. The Company also leases branch office space from a director who has an indirect ownership in the building. Certain of his immediate family members own a minority interest in the limited liability company that owns the building. The rent the Bank pays for the use of this space under the existing lease is $31,000 to $32,000 annually for the next three years. Rent payments totaled $30,000 in 2013 and $34,000 in 2012.

Earnings_Per_Common_Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Common Share	'
Earnings Per Common Share	'
	(17) Earnings Per Common Share
	The following is the calculation of basic and diluted earnings per common share.
	(In thousands, except per share data)	2013		2012		2011
	Net income	$	25,510	$	45,297	$	27,998
	Weighted average shares for basic		30,687		29,654		29,401
	Weighted average shares for diluted		31,077		29,996		29,784
	Basic earnings per common share	$	0.83	$	1.53	$	0.95
	Diluted earnings per common share	$	0.82	$	1.51	$	0.94
	The following shows the composition of basic outstanding shares for the years ended December 31, 2013, 2012, and 2011:
	(in thousands)	2013		2012		2011
	Weighted average shares outstanding—basic		30,271		29,244		28,938
	Weighted average shares attributable to deferred compensation plans		416		410		463
	Total weighted average shares—basic		30,687		29,654		29,401
	Weighted average shares for the basic earnings per share calculation is increased by the number of shares required to be issued under the Company's various deferred compensation plans. These plans provide for a Company match. The Company match must be in common stock of the Company.
	The following shows the composition of diluted outstanding shares for the years ended December 31, 2013, 2012, and 2011:
	(in thousands)	2013		2012		2011
	Weighted average shares outstanding—basic		30,271		29,244		28,938
	Weighted average shares attributable to deferred compensation plans		628		664		694
	Weighted average shares attributable to vested stock options		151		88		152
	Incremental shares from unvested stock options		27		—		—
	Total weighted average shares—diluted		31,077		29,996		29,784
	Employees and directors who participate in the Company's deferred compensation plans can allocate, at their discretion, their contributions to various investment options, including an option to invest in Company Common Stock. The incremental weighted average shares attributable to the deferred compensation plans included in diluted outstanding shares assumes the participants opt to invest all of their contributions into the Company's Common Stock investment option.
	Antidilutive outstanding stock options excluded from the weighted average shares outstanding for the diluted earnings per share calculation for the years ended December 31, 2013 and 2011 were 157 and 19,412, respectively. There were no antidilutive outstanding stock options for the year ended December 31, 2012. These stock options have exercise prices that were greater than the average market price of the Company's common stock for the years presented. In addition, for the years ended December 31, 2013 and 2012, there were 26,995 and 14,739, respectively, incremental shares related to unvested stock options added to the diluted weighted average share calculation. No unvested incremental stock option shares were added to the earnings per share calculation for 2011 as the addition of these shares to the diluted weighted average share calculation would have been antidilutive.

401k_Plan

401(k) Plan	12 Months Ended
	Dec. 31, 2013
401(k) Plan	'
401(k) Plan	'
	(18) 401(k) Plan
	Employees who work twenty (20) hours or more a week and have been employed by the Company for a month can elect to participate in and make contributions into a 401(k) Plan. The Company contributes $0.50 for $1.00 of employee contributions up to a maximum of 3% of the employee's contribution. Expense related to the Company's match in 2013, 2012, and 2011, was $ 1.3 million, $1.1 million, and $682,000, respectively. Employees are immediately vested in the Company's matching contribution.

Deferred_Compensation_Plans

Deferred Compensation Plans	12 Months Ended
	Dec. 31, 2013
Deferred Compensation Plans	'
Deferred Compensation Plans	'
	(19) Deferred Compensation Plans
	The Company has deferred compensation plans for its directors and certain employees. Under the directors' plan, a director may elect to defer all or a portion of any director-related fees including fees for serving on board committees. Under the employees' plan, certain employees may defer all or a portion of their compensation including any bonus or commission compensation. Director and employee deferrals, other than employees of George Mason, are matched 50% by the Company. Deferrals made by employees of George Mason are not eligible for the Company match. The amount of the Company match is deemed invested in Company common stock which vests immediately for the directors and over three years for employees. The maximum Company match per employee is $50,000 per year. There is no annual ceiling to the Company match for directors. Expense relating to the deferred compensation plans for the years ended December 31, 2013, 2012, and 2011, was $286,000, $215,000, and $253,000, respectively, the employee portion of which is included in salary and benefits expense and the directors portion of the expense is included in other operating expense in the consolidated statements of income.
	The deferred compensation plan liability at December 31, 2013 and 2012 was $8.3 million and $7.2 million, respectively. The trust established for the deferred compensation plan is funded.
	The Company has a supplemental executive retirement plan (SERP) that covers certain executive officers. Under the plan, the Company pays each participant, or their beneficiary, the amount of compensation deferred plus accrued interest beginning with the individual's retirement. A liability is accrued for the obligation under these plans. The expense incurred for the SERP in 2013, 2012, and 2011 was $210,000, $2.4 million, and $434,000, respectively. The SERP liability was $7.1 million and $6.9 million as of December 31, 2013 and 2012, respectively.

Director_and_Employee_StockBas

Director and Employee Stock-Based Compensation Plans	12 Months Ended
	Dec. 31, 2013
Director and Employee Stock-Based Compensation Plans	'
Director and Employee Stock-Based Compensation Plans	'
	(20) Director and Employee Stock-Based Compensation Plans
	At December 31, 2013, the Company had two stock-based employee compensation plans, the 1999 Stock Option Plan (the "Option Plan") and the 2002 Equity Compensation Plan (the "Equity Plan").
	In 1998, the Company adopted the Option Plan pursuant to which the Company may grant stock options for up to 625,000 shares of the Company's common stock to employees and members of the Company's and its subsidiaries' boards of directors. As of November 23, 2008, the Option Plan expired, and therefore, there are no shares of common stock available to grant under this plan.
	In 2002, the Company adopted the Equity Plan. The Equity Plan authorizes the granting of options, which may be incentive stock options or non-qualified stock options, stock appreciation rights, restricted stock awards, phantom stock awards or performance share awards to directors, eligible officers and key employees of the Company. In 2011, the shareholders approved an amendment to the Equity Plan to increase the number of shares of common stock reserved for issuance under it from 2,420,000 to 3,170,000, an increase of 750,000 shares. In addition, the amendment extended the term of the Equity Plan to February 21, 2021. There are 701,818 shares of the Company's common stock available for future grants and awards in the Equity Plan as of December 31, 2013.
	The following tables present a summary of the Company's stock option activity for the years ended December 31, 2013, 2012, and 2011:
		Number of			Weighted			Weighted			Aggregate
		Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Term (Years)
	Outstanding at December 31, 2012		851,358		$	10.21
	Granted		278,250			16.23
	Exercised		(106,355	)		8.64
	Forfeited		(11,700	)		10.18
	Outstanding at December 31, 2013		1,011,553		$	12.03			5.44		$	6,025,243
	Options exercisable at December 31, 2013		722,403		$	11.15			4.25		$	4,943,418
		Number of			Weighted			Weighted			Aggregate
		Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Term (Years)
	Outstanding at December 31, 2011		1,832,860		$	9.38
	Granted		63,750			12.11
	Exercised		(1,027,702	)		8.84
	Forfeited		(17,550	)		10.2
	Outstanding at December 31, 2012		851,358		$	10.21			4.67		$	5,182,708
	Options exercisable at December 31, 2012		682,458		$	10.19			3.84		$	4,166,600
		Number of			Weighted			Weighted			Aggregate
		Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Term (Years)
	Outstanding at December 31, 2010		2,197,289		$	8.67
	Granted		153,100			11.2
	Exercised		(428,779	)		6.13
	Forfeited		(88,750	)		10.77
	Outstanding at December 31, 2011		1,832,860		$	9.38			4.19		$	2,493,627
	Options exercisable at December 31, 2011		1,659,160		$	9.38			3.74		$	2,250,771
	Information pertaining to stock options outstanding at December 31, 2013 is as follows:
	At December 31, 2013
		Options Outstanding								Options Exercisable
					Weighed Average
	Range of	Number			Remaining		Exercise			Number			Weighted Average
	Exercise Prices	Outstanding			Contractual Life		Price			Exercisable			Exercise
													Price
	$5.95 - $8.28		88,510		5.1 years		$	6.45			72,560		$	6.52
	$8.39 - $9.59		62,500		1.9 years			8.89			60,700			8.9
	$9.78 - $10.91		201,224		3.1 years			10.34			175,224			10.38
	$11.03 - $12.65		368,069		4.5 years			11.6			311,469			11.58
	$13.00 - $15.02		68,500		9.2 years			14.76			52,350			14.95
	$15.32 - $17.82		222,750		9.2 years			16.54			50,100			16.57
	Outstanding at year end		1,011,553		5.44			12.03			722,403			11.15
	Total intrinsic value of options exercised during the years ended December 31, 2013, 2012, and 2011, was $875,000, $7.7 million, and $2.0 million, respectively.
	A summary of the status of the Company's non-vested stock options and changes during the year ended December 31, 2013 is as follows:
		Number of			Weighted
		Shares			Average
					Grant Date
					Fair Value
	Balance at December 31, 2010		211,500		$	3.93
	Granted		153,100			4.84
	Vested		(144,750	)		4.71
	Forfeited		(46,150	)		4.47
	Balance at December 31, 2011		173,700		$	3.94
Granted		63,750			4.65
Vested		(54,220	)		3.99
Forfeited		(14,330	)		4.21
Balance at December 31, 2012		168,900		$	4.17
Granted		278,250			5.83
Vested		(150,250	)		5.09
Forfeited		(7,750	)		4.21
Balance at December 31, 2013		289,150		$	5.29
At December 31, 2013, there was $1.1 million of total unrecognized compensation expense related to non-vested share-based compensation arrangements granted under the plans. The expense is expected to be recognized over a weighted average period of 2.5 years. The total fair value of shares that vested during the years ended December 31, 2013, 2012, and 2011, was $765,000, $216,000, and $681,000, respectively.

Segment_Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2013
Segment Reporting	'
Segment Reporting	'
	(21) Segment Reporting
	The Company operates in three business segments: commercial banking, mortgage banking, and wealth management services. As of June 30, 2013, the Company merged the remaining operations of its trust division and Wilson/Bennett Capital Management, Inc., both of which had been included in the wealth management services segment, into CWS. In addition, as of June 30, 2013, the Company merged the operations of Cardinal First Mortgage, LLC into George Mason. Results for the year ended December 31, 2013 include six months of operations of these subsidiaries.
	The commercial banking segment includes both commercial and consumer lending and provides customers with such products as commercial loans, real estate loans, business financing and consumer loans. In addition, this segment provides customers with several choices of deposit products including demand deposit accounts, savings accounts and certificates of deposit. The mortgage banking segment engages primarily in the origination and acquisition of residential mortgages for sale into the secondary market on a best efforts basis. The wealth management services segment provides investment and financial advisory services to businesses and individuals, including financial planning, retirement/estate planning, and investment management.
	Information about the reportable segments and reconciliation of this information to the consolidated financial statements at and for the years ended December 31, 2013, 2012, and 2011 follows:
	(In thousands)
	At and for the Year Ended December 31, 2013:
		Commercial			Mortgage			Wealth			Other			Intersegment			Consolidated
		Banking			Banking			Management						Elimination
								Services
	Net interest income	$	90,563		$	2,474		$	—		$	(692	)	$	—		$	92,345
	Provision for loan losses		(117	)		85			—			—			—			(32	)
	Non-interest income		3,767			24,760			1,337			85			(38	)		29,911
	Non-interest expense		43,832			35,185			1,580			4,044			(38	)		84,603
	Provision (benefit) for income taxes		16,734			(2,821	)		(81	)		(1,657	)		—			12,175
	Net income (loss)	$	33,881		$	(5,215	)	$	(162	)	$	(2,994	)	$	—		$	25,510
	Total Assets	$	2,862,039		$	380,124		$	2,266		$	347,288		$	(697,487	)	$	2,894,230
	At and for the Year Ended December 31, 2012:
		Commercial			Mortgage			Wealth			Other			Intersegment			Consolidated
		Banking			Banking			Management						Elimination
								Services
	Net interest income	$	89,472		$	2,365		$	—		$	(834	)	$	—		$	91,003
	Provision for loan losses		6,865			258			—			—			—			7,123
	Non-interest income		5,868			54,794			2,623			176			(69	)		63,392
	Non-interest expense		43,495			29,529			2,656			3,706			(69	)		79,317
	Provision (benefit) for income taxes		14,436			9,764			(14	)		(1,528	)		—			22,658
	Net income (loss)	$	30,544		$	17,608		$	(19	)	$	(2,836	)	$	—		$	45,297
	Total Assets	$	2,954,412		$	815,820		$	2,693		$	329,328		$	(1,063,066	)	$	3,039,187
	At and for the Year Ended December 31, 2011:
		Commercial			Mortgage			Wealth			Other			Intersegment			Consolidated
		Banking			Banking			Management						Elimination
								Services
	Net interest income	$	77,456		$	2,522		$	—		$	(816	)	$	—		$	79,162
	Provision for loan losses		6,910			—			—			—			—			6,910
	Non-interest income		6,116			25,592			2,552			161			(88	)		34,333
	Non-interest expense		42,202			16,032			2,610			3,709			(88	)		64,465
	Provision (benefit) for income taxes		11,397			4,291			(29	)		(1,537	)		—			14,122
	Net income (loss)	$	23,063		$	7,791		$	(29	)	$	(2,827	)	$	—		$	27,998
	Total Assets	$	2,549,326		$	531,403		$	590		$	278,820		$	(757,423	)	$	2,602,716
	The Company did not have any operating segments other than those reported. Parent company financial information is included in the "Other" category and represents an overhead function rather than an operating segment. The parent company's most significant assets are its net investments in its subsidiaries. The parent company's net interest expense is comprised of interest income from short-term investments and interest expense on trust preferred securities.

Financial_Instruments_with_Off

Financial Instruments with Off Balance Sheet Risk	12 Months Ended
	Dec. 31, 2013
Financial Instruments with Off Balance Sheet Risk	'
Financial Instruments with Off Balance Sheet Risk	'
	(22) Financial Instruments with Off Balance Sheet Risk
	The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Commitments to extend credit are agreements to lend to a customer so long as there is no violation of any condition established in the contract. Commitments usually have fixed expiration dates up to one year 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. These instruments represent obligations of the Company to extend credit or guarantee borrowings and are not recorded on the consolidated statements of financial condition. The rates and terms of these instruments are competitive with others in the market in which the Company operates.
	The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The Company evaluates each customer's creditworthiness on a case-by-case basis and requires collateral to support financial instruments when deemed necessary. The amount of collateral obtained upon extension of credit is based upon management's evaluation of the counterparty. Collateral held varies but may include deposits held by the Company, marketable securities, accounts receivable, inventory, property, plant and equipment, and income-producing commercial properties.
	Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of the contractual obligations by a customer to a third party. The majority of these guarantees extend until satisfactory completion of the customer's contractual obligations. All standby letters of credit outstanding at December 31, 2013 are collateralized.
	Commitments to extend credit of $210.9 million as of December 31, 2013 are related to George Mason's mortgage loan funding commitments and are of a short term nature. Commitments to extend credit of $1.3 billion primarily have floating rates as of December 31, 2013.
	These off-balance sheet financial instruments may involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated statements of financial condition. Credit risk is defined as the possibility of sustaining a loss because the other parties to a financial instrument fail to perform in accordance with the terms of the contract. The Company's maximum exposure to credit loss under standby letters of credit and commitments to extend credit is represented by the contractual amounts of those instruments. It is uncertain as to the amount, if any, that the Company will be required to fund on these commitments as many such arrangements expire with no amounts drawn.
	A summary of the contract amount of the Bank's exposure to off-balance-sheet risk as of December 31, 2013 and 2012 is as follows:
	(In thousands)
		2013		2012
	Financial instruments whose contract amounts represent potential credit risk:
	Commitments to extend credit	$	1,486,572	$	1,248,766
	Standby letters of credit		28,008		36,466
	The fair value of the liability associated with standby letters of credit and commitments to extend credit for the years ended December 31, 2013 and 2012 were $517,000 and $415,000, respectively.
	George Mason provides for its estimated exposure to repurchase loans previously sold to investors for which borrowers failed to provide full and accurate information on their loan application or for which appraisals were not acceptable or where the loan was not underwritten in accordance with the loan program specified by the loan investor, and for other exposure to its investors related to loan sales activities. The Company evaluates the merits of each claim and estimates its reserve based on actual and expected claims received and considers the historical amounts paid to settle such claims. The Company recognizes an expense when settlement is deemed probable and the amount of such a settlement is estimable. Given the steps that have been taken to limit the exposure coupled with the passage of time and the expiration of the statute of limitations for loans originated in certain prior years, the Company's current expectation is that future putback claims will be limited in number.
	During 2013 and 2012, George Mason either repurchased from or settled with investors on such loans for a total of $302,000 and $375,000, respectively. This reserve had a balance of $261,000 and $628,000 for the years ended December 31, 2013 and 2012, respectively. The expense (benefit) related to this reserve for the years ended December 31, 2013, 2012, and 2011, was ($49,000), $962,000, and $670,000, respectively.
	The Company has derivative counter-party risk which may arise from the possible inability of George Mason's third-party investors to meet the terms of their forward sales contracts. George Mason works with third-party investors that are generally well-capitalized, are investment grade and exhibit strong financial performance to mitigate this risk. The Company does not expect any third-party investor to fail to meet its obligation.
	The Company has guaranteed payment of the $20.0 million debt of Statutory Trust I. See Note 11 for further discussion of this debt.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Fair Value Measurements	'
	(23) Fair Value Measurements
	The fair value framework under U.S. generally accepted accounting principles defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. It also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring the fair value. There are three levels of inputs that may be used to measure fair value:
	Level 1—Quoted prices in active markets for identical assets or liabilities as of the measurement date.
	Level 2—Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets.
	Level 3—Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.
	Recurring Fair Value Measurements
	All classes of the Company's investment securities available-for-sale with the exception of its treasury securities, the Company's trading investment securities, which include cash equivalents and mutual funds, and bank-owned life insurance are recorded at fair value using reliable and unbiased evaluations by an industry-wide valuation service and therefore fall into the Level 2 category. This service uses evaluated pricing models that vary based on asset class and include available trade, bid, and other market information. Generally, the methodology includes broker quotes, proprietary models, vast descriptive terms and conditions databases, as well as extensive quality control programs. The Company's treasury securities are recorded at fair value using the unadjusted quoted market prices for identical securities and therefore fall under the Level 1 category.
	The Company had an interest rate swap to hedge against the change in fair value of one fixed rate commercial loan. The loan and associated interest rate swap matured during 2013. This loan was recorded at fair value using published yield curve rates from a national valuation service. These observable rates and inputs were applied to a third party industry-wide valuation model, and therefore, the valuations fall into a Level 2 category. Commercial and residential loans are evaluated for impairment and the carrying value of such loans is recorded at fair value based on appraisals of the underlying collateral completed by third parties using Level 2 valuation inputs.
	The Company had two additional interest rate swap derivatives designated as cash flow hedges which matured during 2013. These swaps were recorded at fair value using published yield curve rates from a national valuation service. These observable rates and inputs are applied to a third party industry-wide valuation model, and therefore, the valuations fall into a Level 2 category.
	The Company records its interest rate lock commitments and forward loan sales commitments at fair value determined as the amount that would be required to settle each of these derivative financial instruments at the balance sheet date. In the normal course of business, George Mason enters into contractual interest rate lock commitments to extend credit to borrowers with fixed expiration dates. The commitments become effective when the borrowers "lock-in" a specified interest rate within the time frames established by the mortgage company. All borrowers are evaluated for credit worthiness prior to the extension of the commitment. Market risk arises if interest rates move adversely between the time of the interest rate lock by the borrower and the sale date of the loan to an investor. To mitigate the effect of the interest rate risk inherent in providing rate lock commitments to borrowers, George Mason enters into best efforts forward sales contracts to sell loans to investors. The forward sales contracts lock in an interest rate and price for the sale of loans similar to the specific rate lock commitments. Both the rate lock commitments to the borrowers and the forward sales contracts to the investors through to the date the loan closes are undesignated derivatives and accordingly, are marked to fair value through earnings. These valuations fall into a Level 2 category.
	There was one significant transfer from Level 3 to Level 2 measurements in the fair value hierarchy during the year ended December 31, 2013. There were no significant transfers into and out of Level 1, Level 2 and Level 3 measurements in the fair value hierarchy during the years ended December 31, 2012 and 2011. Transfers between levels are recognized at the end of each reporting period. The valuation technique used for fair value measurements using significant other observable inputs (Level 2) is the market approach for each class of assets and liabilities. At December 31, 2013, pooled trust preferred investment securities of $2.8 million were moved to the available-for-sale investment portfolio and transferred from a Level 3 to a Level 2 fair value measurement as a result of the aforementioned interim rule to the Volcker Rule. The Company will be required to divest of these investments by July 2015, and therefore the Company now records a fair value measurement on these investments based on a live market bid at period end, which is a Level 2 measurement. An impairment of $300,000 was recorded for the year ended December 31, 2013 as a result of this change in fair value methodology.
	Assets and liabilities measured at fair value on a recurring basis as of December 31, 2013 and 2012 are shown below:
	At December 31, 2013
	(In thousands)
				Fair Value Measurements Using
	Description	Balance		Quoted Prices in		Significant		Significant
				Active markets for		Other		Unobservable
				Identical Assets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Investment securities available-for-sale:
	U.S. treasury securities	$	5,029	$	5,029	$	—	$	—
	U.S. government-sponsored agencies		76,928				76,928		—
	Mortgage-backed securities		147,829		—		147,829		—
	Municipal securities		116,738		—		116,738		—
	Pooled trust preferred securities		2,795		—		2,795		—
	Total investment securities available-for-sale		349,319		5,029		344,290		—
	Investment securities—trading		3,890		—		3,890		—
	Bank-owned life insurance		32,063		—		32,063		—
	Derivative asset—rate lock and forward loan sales commitments		16,478		—		16,478		—
	Derivative asset—interest rate lock commitments		9		—		9		—
	Derivative liability—rate lock and forward loan sales commitments		4,052		—		4,052		—
	Derivative liability—interest rate lock commitments		1,554		—		1,554		—
	At December 31, 2012
	(In thousands)
				Fair Value Measurements Using
	Description	Balance		Quoted Prices in		Significant		Significant
				Active markets for		Other		Unobservable
				Identical Assets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Investment securities available-for-sale:
	U.S. treasury securities	$	5,110	$	5,110	$	—	$	—
	U.S. government-sponsored agencies		61,533				61,533		—
	Mortgage-backed securities		118,913		—		118,913		—
	Municipal securities		86,347		—		86,347		—
	Total investment securities available-for-sale		271,903		5,110		266,793		—
	Investment securities—trading		3,151		—		3,151		—
	Loan receivable designated in fair value hedge		11,652		—		11,652		—
	Bank-owned life insurance		31,652		—		31,652		—
	Derivative liability—interest rate swaps		616		—		616		—
	Derivative asset—rate lock and forward loan sales commitments		26,793		—		26,793		—
	Derivative asset—interest rate lock commitments		449		—		449		—
	Derivative liability—rate lock and forward loan sales commitments		4,072		—		4,072		—
	Derivative liability—interest rate lock commitments		91		—		91		—
	Nonrecurring Fair Value Measurements
	Certain assets and liabilities are measured at fair value on a nonrecurring basis and are not included in the tables above. These assets include the valuation of the Company's pooled trust preferred securities held in its held-to-maturity investment securities portfolio, loans receivable—evaluated for impairment and other real estate owned.
	At December 31, 2013
	(In thousands)
				Fair Value Measurements Using
	Description	Balance		Quoted Prices in		Significant		Significant
				Active markets for		Other		Unobservable
				Identical Assets		Observable		Inputs
(Level 1)				Inputs		(Level 3)
				(Level 2)
Pooled trust preferred securities	$	2,910	$	—	$	—	$	2,910
Loans receivable—evaluated for impairment		3,378		—		301		3,077
At December 31, 2012
(In thousands)
			Fair Value Measurements Using
Description	Balance		Quoted Prices in		Significant		Significant
			Active markets for		Other		Unobservable
			Identical Assets		Observable		Inputs
			(Level 1)		Inputs		(Level 3)
					(Level 2)
Pooled trust preferred securities	$	5,072	$	—	$	—	$	5,072
Loans receivable—evaluated for impairment		8,446		—		820		7,626
The Company's held-to-maturity portfolio includes investments in two pooled trust preferred securities, totaling $4.0 million of par value at December 31, 2013. The collateral underlying these structured securities are instruments issued by financial institutions. The Company owns the A-3 tranches in each issuance. Observable trading activity remains limited for these types of securities. The Company has estimated the fair value of the securities through the use of internal calculations and through information provided by external pricing services. Given the level of subordination below the A-3 tranches, and the actual and expected performance of the underlying collateral, the Company expects to receive all contractual interest and principal payments recovering the amortized cost basis of each of the two securities, and concluded that these securities are not other-than-temporarily impaired. The Company also utilizes a multi-scenario model which assumes varying levels of additional defaults and deferrals and the effects of such adverse developments on the contractual cash flows for the A-3 tranches. In each of the adverse scenarios, there was no indication of a break to the A-3 contractual cash flows.
The Company's loans receivable—evaluated for impairment are measured at the present value of its expected future cash flows discounted at the loan's coupon rate, or at the loan's observable market price or fair value of the collateral if the loan is collateral dependent. The Company measures the collateral value on loans receivable—evaluated for impairment by obtaining an updated appraisal of the underlying collateral and may discount further the appraised value, if necessary, to an amount equal to the expected cash proceeds in the event the loan is foreclosed upon and the collateral is sold. In addition, an estimate of costs to sell the collateral is assumed. The Company values other real estate owned by obtaining an updated appraisal of the property foreclosed upon, and discounts further the appraised value to an amount equal to the expected cash proceeds upon the sale of the property. Loans receivable—evaluated for impairment and other real estate owned are valued using third party appraisal data that is based on market comparisons and may be subject to further adjustment for certain non-observable criteria.
Loans receivable—evaluated for impairment that are designated at fair value using Level 3 inputs on a nonrecurring basis total $3.1 million at December 31, 2013. The total amount for each period presented represents the entire population of loans receivable—evaluated for impairment, and of this amount, $3.1 million was determined to be impaired and recorded at fair value. Collateral is in the form of real estate or business assets including equipment, inventory, and accounts receivable. The vast majority of the Company's collateral is real estate. The value of real estate collateral is determined utilizing an income or market valuation approach based on an appraisal conducted by an independent, licensed appraiser using observable market data (Level 2). However, in certain instances, the Company applies a discount to the valuation of the collateral if the collateral being evaluated is in process of construction or a residence. In addition, the Company considers past experience of actual sales of collateral and may further discount the appraisal of the collateral being evaluated. This is considered a Level 3 valuation. The value of business equipment is based upon the net book value on the applicable business's financial statements if not considered significant using observable market data. Likewise, values for inventory and accounts receivable collateral are based on financial statement balances or aging reports (Level 3). Fair value adjustments are recorded in the period incurred as provision for loan losses on the consolidated statements of income. At December 31, 2013, the Company's Level 3 loans consisted of one relationship totaling $2.3 million which was secured primarily by commercial real estate which did not have a valuation allowance and one relationship totaling $814,000 which was primarily secured by business assets.
Although management uses its best judgment in estimating the fair value of financial instruments, there are inherent limitations in any estimation technique. Because of the wide range of valuation techniques and the numerous estimates and assumptions which must be made, it may be difficult to make reasonable comparisons between the Company's fair value information and that of other banking institutions. It is important that the many uncertainties be considered when using the estimated fair value disclosures and that, because of these uncertainties, the aggregate fair value amount should not be construed as representative of the underlying value of the Company.
Fair Value of Financial Instruments
The assumptions used and the estimates disclosed represent management's best judgment of appropriate valuation methods for estimating the fair value of financial instruments. These estimates are based on pertinent information available to management at the valuation date. In certain cases, fair values are not subject to precise quantification or verification and may change as economic and market factors and management's evaluation of those factors change.
The following summarizes the significant methodologies and assumptions used in estimating the fair values presented in the following table, and not disclosed elsewhere in this footnote.
Cash and Cash Equivalents
The carrying amount of cash and cash equivalents is used as a reasonable estimate of fair value.
Investment Securities Held-to-Maturity and Other Investments
Fair values for investment securities held-to-maturity are based on quoted market prices or prices quoted for similar financial instruments.
Loans Held for Sale
Loans held for sale are carried at the lower of cost or estimated fair value. The estimated fair value is based upon the related purchase price commitments from secondary market investors.
Loans Receivable, Net
In order to determine the fair market value for loans receivable, the loan portfolio was segmented based on loan type, credit quality and maturities. For certain variable rate loans with no significant credit concerns and frequent repricings, estimated fair values are based on current carrying amounts. The fair values of other loans are estimated using discounted cash flow analyses, at interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. The fair value analysis also included other assumptions to estimate fair value, intended to approximate those a market participant would use in an orderly transaction, with adjustments for discount rates, interest rates, and liquidity, as appropriate. This method of estimating fair value does not incorporate the exit-price concept of fair value which is appropriate for this disclosure.
Deposits
The fair values for demand deposits are equal to the carrying amount since they are payable on demand at the reporting date. The carrying amounts of variable rate, fixed-term money market accounts and certificates of deposit (CDs) approximate their fair value at the reporting date. Fair values for fixed-rate CDs are estimated using a discounted cash flow calculation that applies interest rates currently being offered on CDs to a schedule of aggregated expected monthly maturities on time deposits.
Other Borrowed Funds
The fair value of other borrowed funds is estimated using a discounted cash flow calculation that applies interest rates currently available for loans with similar terms.
Accrued Interest Receivable
The carrying amount of accrued interest receivable approximates its fair value.
The following summarizes the carrying amount of these financial assets and liabilities that the Company has not recorded at fair value on a recurring basis at December 31, 2013 and 2012:
	December 31, 2013
					Fair Value Measurements Using
	Carrying		Estimated
(In thousands)	Amount		Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	29,209	$	29,209	$	29,209	$	—	$	—
Investment securities available-for-sale		349,319		349,319		5,029		344,290		—
Investment securities held-to-maturity and other investments		25,545		24,595		—		21,685		2,910
Loans held for sale		373,993		373,993		—		373,993		—
Loans receivable, net		2,012,304		2,024,835		—		301		2,024,534
Accrued interest receivable		7,939		7,939		7,939		—		—
Financial liabilities:
Demand deposits	$	433,749	$	433,749	$	433,749	$	—	$	—
Interest checking		398,136		398,136		398,136		—		—
Money market and statement savings		475,707		475,707		475,707		—		—
Certificates of deposit		751,267		756,191		—		756,191		—
Other borrowed funds		475,232		491,236		—		491,236		—
Accrued interest payable		869		869		869		—		—
	December 31, 2012
					Fair Value Measurements Using
	Carrying		Estimated
(In thousands)	Amount		Fair Value		Level 1		Level 2		Level 3
Financial assets:
Cash and cash equivalents	$	67,140	$	67,140	$	67,140	$	—	$	—
Investment securities available-for-sale		271,903		271,903		5,110		266,793		—
Investment securities held-to-maturity and other investments		25,668		23,321		—		18,249		5,072
Loans held for sale		785,751		785,751		—		785,751		—
Loans receivable, net		1,776,029		1,823,356		—		12,472		1,810,884
Accrued interest receivable		7,333		7,333		7,333		—		—
Financial liabilities:
Demand deposits	$	351,815	$	351,815	$	351,815	$	—	$	—
Interest checking		347,697		347,697		347,697		—		—
Money market and statement savings		430,391		430,391		430,391		—		—
Certificates of deposit		1,113,855		1,124,235		—		1,124,235		—
Other borrowed funds		392,275		418,808		—		418,808		—
Accrued interest payable		974		974		974		—		—

Parent_Company_Only_Financial_

Parent Company Only Financial Statements	12 Months Ended
	Dec. 31, 2013
Parent Company Only Financial Statements	'
Parent Company Only Financial Statements	'
	(24) Parent Company Only Financial Statements
	The Cardinal Financial Corporation (Parent Company only) condensed financial statements are as follows:
	PARENT COMPANY ONLY CONDENSED STATEMENTS OF CONDITION
	December 31, 2013 and 2012
	(In thousands)
		2013			2012
	Assets
	Cash and cash equivalents	$	4,311		$	7,141
	Investment securities—Trading		3,890			3,151
	Other investments		113			113
	Investment in subsidiaries		333,076			315,367
	Premises and equipment, net		632			671
	Goodwill		24			24
	Other assets		5,242			2,861
	Total assets	$	347,288		$	329,328
	Liabilities and Shareholders' Equity
	Debt to Cardinal Statutory Trust I	$	20,619		$	20,619
	Other liabilities		6,137			643
	Total liabilities		26,756			21,262
	Total shareholders' equity	$	320,532		$	308,066
	Total liabilities and shareholders' equity	$	347,288		$	329,328
	PARENT COMPANY ONLY CONDENSED STATEMENTS OF OPERATIONS
	Years Ended December 31, 2013, 2012, and 2011
	(In thousands)
		2013			2012			2011
	Income:
	Net interest expense	$	(692	)	$	(834	)	$	(816	)
	Net realized and unrealized trading losses		68			158			144
	Other income		17			18			17
	Total income (loss)		(607	)		(658	)		(655	)
	Expense—general and administrative		4,044			3,706			3,709
	Net loss before income taxes and equity in undistributed earnings of subsidiaries		(4,651	)		(4,364	)		(4,364	)
	Income tax benefit		(1,657	)		(1,528	)		(1,537	)
	Equity in undistributed earnings of subsidiaries		28,504			48,133			30,825
	Net income	$	25,510		$	45,297		$	27,998
	PARENT COMPANY ONLY CONDENSED STATEMENTS OF CASH FLOWS
	Years ended December 31, 2013, 2012, and 2011
	(In thousands)
		2013			2012			2011
	Cash flows from operating activities:
	Net income	$	25,510		$	45,297		$	27,998
	Adjustments to reconcile net income to net cash provided by operating activities:
	Equity in undistributed earnings of subsidiaries		(28,504	)		(48,133	)		(30,825	)
	Depreciation		39			42			44
	Proceeds from sale of investment securities—trading		—			—			743
	Purchase of investment securities—trading		(1,707	)		(1,174	)		(1,182	)
	Unreliazed gain on investment securities—trading		(68	)		(158	)		(144	)
	Impairment of goodwill and other intangible assets		—			—			—
	Increase (decrease) in other assets and liabilities		7,782			1,430			(3,670	)
	Net cash provided by (used in) operating activities		3,050			(2,696	)		(7,036	)
	Cash flows from investing activities:
	Net cash used in investing activities		—			—			—
	Cash flows from financing activities:
	Dividends on common stock		(6,964	)		(5,892	)		(3,474	)
	Stock options exercised		1,084			9,090			2,627
	Net cash provided by (used in) financing activities		(5,880	)		3,198			(847	)
	Net increase (decrease) in cash and cash equivalents		(2,830	)		502			(7,883	)
	Cash and cash equivalents at beginning of year		7,141			6,639			14,522
	Cash and cash equivalents at end of year	$	4,311		$	7,141		$	6,639

Other_Operating_Expenses

Other Operating Expenses	12 Months Ended
	Dec. 31, 2013
Other Operating Expenses	'
Other Operating Expenses	'
	(25) Other Operating Expenses
	The following shows the composition of other operating expenses for the years ended December 31, 2013, 2012, and 2011:
	(In thousands)	2013		2012		2011
	Stationary and supplies	$	1,808	$	1,693	$	1,183
	Other taxes		624		467		284
	Travel and entertainment		764		763		632
	Premises and equipment		4,164		3,524		2,669
	Business memberships		500		447		328
	Employment services		141		253		172
	Board of directors expenses		698		538		575
	Loan expense		589		454		463
	Miscellaneous		3,944		3,236		2,106
	Total other operating expense	$	13,232	$	11,375	$	8,412

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events	'
Subsequent Events	'
	(26) Subsequent Events
	On January 16, 2014, the Company announced the completion of its acquisition of United Financial Banking Companies, Inc. ("UFBC"), the holding company of The Business Bank ("TBB"), pursuant to a previously announced definitive merger agreement. The merger of UFBC into Cardinal was effective January 16, 2014. Under the terms of the merger agreement, UFBC shareholders received $19.13 in cash and 1.154 shares of the Company's common stock in exchange for each share of UFBC common stock they owned immediately prior to the merger, for a total purchase price of $53.6 million. TBB, which was headquartered in Vienna, Virginia, merged into Cardinal Bank effective March 8, 2014 adding eight (8) banking locations in northern Virginia, one of the Company's target markets.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Summary of Significant Accounting Policies	'
Use of Estimates	'
	(a)
	Use of Estimates
	U.S. generally accepted accounting principles are complex and require management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and contingent liabilities, at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates affecting the Company's financial statements relate to accounting for business combinations and impairment testing of goodwill, the allowance for loan losses, accounting for impairment of identifiable intangible assets, the valuation of the deferred tax assets, other-than-temporary impairment assessments for investment securities, fair value measurements of certain assets and liabilities, fair values of derivatives and investment securities and reserves for repurchase of mortgage loans previously sold to investors. Actual results could differ from these estimates.
Principles of Consolidation	'
	(b)
	Principles of Consolidation
	The consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation.
Accounting for Business Combinations	'
	(c)
	Accounting for Business Combinations
	Business combinations are accounted for under the purchase method. The purchase method requires that the cost of an acquired entity be allocated to the assets acquired and liabilities assumed, based on their estimated fair values at the date of acquisition. The excess of the cost of an acquired entity over the net of the amounts assigned to assets acquired and liabilities assumed, including identifiable intangibles, is recorded as goodwill.
Cash and Cash Equivalents	'
	(d)
	Cash and Cash Equivalents
	For the consolidated statements of cash flows, the Company has defined cash and cash equivalents as cash and due from banks and federal funds sold.
Investment Securities	'
	(e)
	Investment Securities
	The Company classifies its investment securities into one of three categories: available-for-sale, held-to-maturity or trading. Held-to-maturity securities are those securities for which the Company has the ability and intent to hold until maturity. Trading securities are those securities for which the Company has purchased and holds for the purpose of selling in the near future. All other securities are classified as available-for-sale.
	Held-to-maturity securities are carried at amortized cost. Available-for-sale and trading securities are carried at estimated fair value. Unrealized gains and losses, net of applicable tax, on available-for-sale securities are reported in other comprehensive income (loss). Unrealized market value adjustments, fees and realized gains and losses, on trading securities are reported in non-interest income.
	At December 31, 2013 and 2012, the Company had investment securities classified as trading. These investments were purchased to economically hedge against fair value changes of the Company's nonqualified deferred compensation plan liability. Those investments were designated as trading securities, and as such, the changes in fair value are reflected in earnings.
	Gains and losses on the sale of securities are determined using the specific identification method.
	The Company regularly evaluates its securities whose values have declined below their amortized cost to assess whether the decline in fair value is other-than-temporary. The Company considers various factors in determining whether a decline in fair value is other-than-temporary including the issuer's financial condition and/or future prospects, the effects of changes in interest rates or credit spreads, the expected recovery period and other quantitative and qualitative information. The valuation of securities for impairment is a process subject to estimation, judgment and uncertainty and is intended to determine whether declines in the fair value of investments should be recognized in current period earnings. The risks and uncertainties include changes in general economic conditions and future changes in assessments of the aforementioned factors. It is expected that such factors will change in the future, which may result in future other-than-temporary impairments. For impairments of debt securities that are deemed to be other-than-temporary, the credit portion of an other-than-temporary impairment loss is recognized in earnings and the non-credit portion is recognized in accumulated other comprehensive income in those situations where the Company does not intend to sell the security and it is more likely than not that the Company will not be required to sell the security prior to recovery.
	On December 10, 2013, the Office of the Comptroller of the Currency, the FDIC, the Board of Governors of the Federal Reserve System, the SEC, and the Commodity Futures Trading Commission (collectively, "the Agencies"), released final rules (the "Final Rules") to implement Section 619 of the Financial Reform Act, commonly known as the "Volcker Rule". The Volcker Rule, among other things, prohibits banking entities from engaging in proprietary trading and from sponsoring, having an ownership interest in or having certain relationships with hedge funds or private equity funds (referred to in the Final Rules as a covered fund), subject to certain exemptions. The Final Rules impact certain investments held by banks in collateralized debt obligations backed by trust preferred securities, which may constitute ownership interests in covered funds as those terms are defined in the Final Rules. On January 14, 2014, an interim rule was issued by the federal banking regulators to exempt certain of these trust preferred securities from the covered fund definition as issued in the Final Rules.
	The Company owns four pooled trust preferred securities which were all previously classified as held-to-maturity within the investment securities portfolio. Based on the interim rule, only two of the four investments were exempt from the covered fund definition. For the two investments that were not exempt as a result of the interim rule, the Company will be required to divest its investment in these particular pooled trust preferred securities prior to the effectiveness of the Final Rule in July 2015. As a result of this new regulation, these two investments were reclassified to the available-for-sale investment securities portfolio and an other-than-temporary impairment of $300,000 was recognized as of December 31, 2013 as we no longer have the ability to hold until recovery.
	Interest income and dividends on securities are recognized in interest income on an accrual basis. Premiums and discounts are recognized in interest income using the effective interest method. Prepayments of the mortgages securing mortgage-backed securities may affect the yield to maturity. The Company uses actual principal prepayment experience and estimates of future principal prepayments in calculating the yield necessary to apply the effective interest method.
Loans Held for Sale	'
	(f)
	Loans Held for Sale
	Mortgage loans originated and intended for sale into the secondary market are carried at the lower of cost or estimated fair value, determined on an aggregate loan basis. The Company sells its mortgage loans forward to investors and the estimated fair value is largely dependent upon the terms of these outstanding loan purchase commitments as well as movement in market interest rates. Net unrealized losses, if any, are recognized through a valuation allowance by charges to operations. The carrying amount of loans held for sale includes principal balances, valuation allowances, origination premiums or discounts and fees and direct costs that are deferred at the time of origination.
	The Company sells its originated mortgage loans to third party investors servicing released. Upon sale and delivery, the loans are legally isolated from the Company and the Company has no ability to restrict or constrain the ability of third-party investors to pledge or exchange the mortgage loans. The Company does not have the entitlement or ability to repurchase the mortgage loans or unilaterally cause third-party investors to put the mortgage loans back to the Company.
Loans Receivable and Allowance for Loan Losses	'
	(g)
	Loans Receivable and Allowance for Loan Losses
	Loans receivable that management has the intent and ability to hold for the foreseeable future or until loan maturity or pay-off are reported at their outstanding principal balance adjusted for any charge-offs, and net of the allowance for loan losses and deferred fees and costs. Loan origination fees and certain direct origination costs are deferred and amortized as an adjustment of the yield using the payment terms required by the loan contract.
	Loans are generally placed into nonaccrual status when they are past-due 90 days as to either principal or interest or when, in the opinion of management, the collection of principal and/or interest is in doubt. A loan remains in nonaccrual status until the loan is current as to payment of both principal and interest or past-due less than 90 days and the borrower demonstrates the ability to pay and remain current. Loans are charged-off when a loan or a portion thereof is considered uncollectible. When cash payments are received, they are applied to principal first, then to accrued interest. It is the Company's policy not to record interest income on nonaccrual loans until principal has become current. In certain instances, accruing loans that are past due 90 days or more as to principal or interest may not go on nonaccrual status if the Chief Credit Officer determines that the loans are well secured and are in the process of collection.
	The Company determines and recognizes impairment of certain loans when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the loan agreement. A loan is not considered impaired during a period of delay in payment if the Company expects to collect all amounts due, including past-due interest. An impaired loan is measured at the present value of its expected future cash flows discounted at the loan's coupon rate, or at the loan's observable market price or fair value of the collateral if the loan is collateral dependent. Because substantially all of the Company's loans are collateral dependent, the Company generally measures impairment based on the estimated fair value of the collateral. The Company measures the collateral value on impaired loans by obtaining an updated appraisal of the underlying collateral and may discount further the appraised value, if necessary, to an amount equal to the expected cash proceeds in the event the loan is foreclosed upon and the collateral is sold. In addition, an estimate of costs to sell the collateral is assumed.
	Nonperforming assets include nonaccrual loans, loans past due 90 days or more and other real estate owned.
	The allowance for loan losses is increased by provisions for loan losses and recoveries of previously charged-off loans, and decreased by loan charge-offs.
	The Company maintains the allowance for loan losses at a level that represents management's best estimate of known and inherent losses in the loan portfolio. Both the amount of the provision expense and the level of the allowance for loan losses are impacted by many factors, including general and industry-specific economic conditions, actual and expected credit losses, historical trends and specific conditions of the individual borrowers including the value of the underlying collateral. Unusual and infrequently occurring events, such as weather-related disasters, may impact the assessment of possible credit losses. As a part of its analysis, the Company uses comparative peer group data and qualitative factors, such as levels of and trends in delinquencies, nonaccrual loans, charged-off loans, changes in volume and terms of loans, effects of changes in lending policy, experience and ability and depth of management, national and local economic trends and conditions and concentrations of credit, competition, and loan review results to support estimates.
	For purposes of this analysis, the Company categorizes loans into one of five categories: commercial and industrial, commercial real estate (including construction), home equity lines of credit, residential mortgages, and consumer loans. Typically, financial institutions use their historical loss experience and trends in losses for each category which are then adjusted for portfolio trends and economical and environmental factors in determining their allowance for loan losses. Prior to 2008, the Company experienced minimal loss history within its loan portfolio and it has only been since the economic downturn that the Company has recorded a higher level of loan losses. Because of this, the Company's allowance model uses the average loss rates of similar institutions (the custom peer group) as a baseline which is then adjusted based on its particular loan portfolio characteristics and environmental factors. The indicated loss factors resulting from this analysis are applied to each of the five categories of loans.
	The Company's peer groups are defined by selecting commercial banking institutions of similar size within Virginia, Maryland and the District of Columbia. This is known as the custom peer group. The commercial banking institutions comprising the custom peer group can change based on certain factors including but not limited to the characteristics, size, and geographic footprint of the institution. The Company has identified 20 banks for the custom peer group which are within $500 million to $5 billion in total assets, the majority of whom are geographically concentrated in the Washington metropolitan area in which the Company operates as this area has seen less of an economic downturn than other areas of the country. The Company evaluates the loan quality indicators of the custom peer group to those within its national FDIC peer group, all banks in Virginia, and all banks in Maryland. These baseline peer group loss rates are then adjusted by an estimated loss emergence factor in order to determine loss coverage for pass-level credits. Finally, the Company makes adjustments to these loss factors based on an analysis of its loan portfolio characteristics, trends, economic considerations and other conditions that should be considered in assessing the Company's credit risk. Peer loss rates are updated on at least an annual basis.
	In addition, the Company individually assigns loss factors to all loans that have been identified as having loss attributes, as indicated by deterioration in the financial condition of the borrower or a decline in underlying collateral value if the loan is collateral dependent. In certain cases, the Company applies, in accordance with regulatory guidelines, a 5% loss factor to all loans classified as special mention, a 15% loss factor to all loans classified as substandard and a 50% loss factor to all loans classified as doubtful. Loans classified as loss loans are fully reserved or charged-off. However, in most instances, the Company evaluates the impairment of certain loans on a loan by loan basis for those loans that are adversely risk rated. For these loans, the Company analyzes the fair value of the collateral underlying the loan and considers estimated costs to sell the collateral on a discounted basis. If the net collateral value is less than the loan balance (including accrued interest and any unamortized premium or discount associated with the loan) the Company recognizes an impairment and establishes a specific reserve for the impaired loan. Because of the limited number of impaired loans within the its portfolio, the Company is able to evaluate each impaired loan individually and therefore specific reserves for impaired loans are generally less than those recommended by the listed regulatory guidelines above.
	In addition, various regulatory agencies, as part of their examination process, periodically review the Company's allowance for loan losses. These agencies may require the Company to recognize additions to the allowance based on their risk evaluation and credit judgment. Management believes that the allowance for loan losses at December 31, 2013 and 2012 is a reasonable estimate of known and inherent losses in the loan portfolio at those dates.
	Loans considered to be troubled debt restructuring ("TDRs") are loans that have their terms restructured (e.g., interest rates, loan maturity date, payment and amortization period, etc.) in circumstances that provide payment relief to a borrower experiencing financial difficulty. All restructured loans are considered impaired loans and may either be in accruing status or nonaccruing status. Nonaccruing restructured loans may return to accruing status provided doubt has been removed concerning the collectability of principal and interest as evidenced by a sufficient period of payment performance in accordance with the restructured terms. Loans may be removed from the restructured category in the year subsequent to the restructuring if their revised loan terms are considered to be consistent with terms that can be obtained in the credit market for loans with comparable risk and if they meet certain performance criteria.
Premises and Equipment	'
	(h)
	Premises and Equipment
	Land is carried at cost. Premises, furniture, equipment, and leasehold improvements are carried at cost, less accumulated depreciation and amortization. Depreciation of premises, furniture and equipment is computed using the straight-line method over estimated useful lives from three to 25 years. Amortization of leasehold improvements is computed using the straight-line method over the useful lives of the improvements or the lease term, whichever is shorter. Purchased computer software which is capitalized is amortized over estimated useful lives of one to three years. Rent expense on operating leases is recorded using the straight-line method over the appropriate lease term.
Goodwill and Other Intangibles	'
	(i)
	Goodwill and Other Intangibles
	Goodwill, which represents the excess of purchase price over fair value of net assets acquired, is not amortized but is evaluated at least annually for impairment by comparing its fair value with its carrying amount. Impairment is indicated when the carrying amount of a reporting unit exceeds its estimated fair value.
	ASU 2011-08 simplifies testing for goodwill impairment by permitting entities to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is greater than its carrying value. If an entity can qualitatively demonstrate that a reporting unit's fair value is more likely than not greater than its carrying value, then it would not be required to perform the quantitative two-step goodwill impairment test.
	A two-step valuation process is applied, as required by ASU 2011-08. In Step 1, each reporting unit's fair value is determined based on three metrics: (1) a primary market approach, which measures fair value based on trading multiples of independent publicly traded financial institutions of comparable size and character to the reporting units, (2) a secondary market approach, which measures fair value based on acquisition multiples of publicly traded financial institutions of comparable size and character which were recently acquired, and (3) an income approach, which estimates fair value based on discounted cash flows. If the fair value of any reporting unit exceeds its adjusted net book value, no write-down of goodwill is necessary. If the fair value of any reporting unit is less than its adjusted net book value, a Step 2 valuation procedure is required to assess the proper carrying value of the goodwill allocated to that reporting unit. The valuation procedures applied in a Step 2 valuation are similar to those that would be performed upon an acquisition, with the Step 1 fair value representing a hypothetical reporting unit purchase price.
	No impairment was recorded for 2013, 2012, and 2011.
Bank-Owned Life Insurance	'
	(j)
	Bank-Owned Life Insurance
	Under the Company's bank-owned life insurance policy, executives or other key individuals are the insureds and the Company is the owner and beneficiary of the policy. As such, the insured has no claim to the insurance policy, the policy's cash value, or a portion of the policy's death proceeds. The increase in the cash surrender value over time is recorded as other non-interest income. The Company monitors the financial strength and condition of the counterparty.
	During 2012, the Company received a death benefit payment of $6.6 million which resulted in an increase in non-interest income of $2.4 million.
Realized and Unrealized Gains on Mortgage Banking Activities	'
	(k)
	Realized and Unrealized Gains on Mortgage Banking Activities
	Realized and unrealized gains on mortgage banking activities include income earned by George Mason from the origination and sale of mortgage loans to third party investors, and other activities incidental to mortgage banking activities. The Company enters into interest rate lock commitments to sell and deliver the mortgage loans, servicing released, to third party investors on a best efforts basis. Unrealized gains include the recognition of the fair value of the rate lock commitment derivative, which approximates the differential between the par value of the loan and the amount that will be received upon the delivery of the loan to the third party investor.
Management Fee Income	'
	(l)
	Management Fee Income
	Management fee income represents income earned for the management and operational support provided by George Mason to other mortgage banking companies (the "managed companies") owned by local homebuilders. The relationship of George Mason to these managed companies is solely as service provider and there is no fiduciary relationship or equity investment involved. Fees earned by George Mason are accrued based on contractual arrangements with each of the managed companies and are generally determined as a percentage of the managed company's net income before income taxes. During the fourth quarter of 2013, the Company amended its agreement with the managed companies to record fee income on a per loan basis. As of the effective date of the amendment, George Mason charges $700 per loan originated by each of the managed companies.
Investment Fee Income	'
	(m)
	Investment Fee Income
	Investment fee income represents commissions paid by customers of CWS and asset management fees paid by the customers of Wilson/Bennett for investment services. Revenue from Trust Services is also a component of investment fee income and is recognized in the period earned in accordance with contractual percentage of assets under management or custody. Trust Services revenue is generally determined based upon the fair value of assets under management or custody at the end of the period. Fees are recognized in income as they are earned. As of June 30, 2013, the Company merged the remaining operations of its trust division and Wilson/Bennett, both of which had been included in the wealth management services segment, into CWS. Results for the year ended December 31, 2013 include six months of operations of these subsidiaries.
Income Taxes	'
	(n)
	Income Taxes
	Deferred tax assets and liabilities are recognized for the tax effects of differing carrying values of assets and liabilities for tax and financial statement purposes that will reverse in future periods. Deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
	When uncertainty exists concerning the recoverability of a deferred tax asset, the carrying value of the asset may be reduced by a valuation allowance. The amount of any valuation allowance established is based upon an estimate of the deferred tax asset that is more likely than not to be recovered. Increases or decreases in the valuation allowance result in increases or decreases to the provision for income taxes.
	Uncertain tax positions, if any, are accounted for by applying a recognition threshold and measurement attribute for tax positions taken or expected to be taken on a tax return. Recognition and measurement of tax positions is based on management's evaluations of relevant tax code and appropriate industry information about audit proceedings for comparable positions at other organizations. Increases to unrecognized tax benefits will occur as a result of accruing for the nonrecognition of the position for the current year. Decreases will occur as a result of the lapsing of the statute of limitations for the oldest outstanding year which includes the position.
Earnings Per Common Share	'
	(o)
	Earnings Per Common Share
	Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the periods, including shares which will be issued to settle liabilities of the deferred compensation plans. Diluted earnings per share reflects the impact of dilutive potential common shares that would have been outstanding if common stock equivalents had been issued, as well as any adjustment to income that would result from the assumed issuance. Common stock equivalents that may be issued by the Company relate primarily to outstanding stock options, and the dilutive potential common shares resulting from outstanding stock options are determined using the treasury stock method. Common stock equivalents for diluted earnings per share purposes also includes common shares which may be issued, but are not required to be issued, to settle the Company's obligations under its deferred compensation plans. The effects of anti-dilutive common stock equivalents are excluded from the calculation of diluted earnings per share.
Derivative Instruments and Hedging Activities	'
	(p)
	Derivative Instruments and Hedging Activities
	The Company records its derivatives at their fair values in other assets and other liabilities on the statement of condition. The Company does not enter into derivative transactions for speculative purposes. For derivatives designated as accounting hedges, the Company contemporaneously documents the hedging relationship, including the risk management objective and strategy for undertaking the hedge, how effectiveness will be assessed at inception and at each reporting period and the method for measuring ineffectiveness. The Company evaluates the effectiveness of these transactions at inception and on an ongoing basis. Ineffectiveness is recorded through earnings. For derivatives designated as cash flow hedges, the fair value adjustment is recorded as a component of other comprehensive income, net of tax, except for the ineffective portion. For derivatives designated as fair value hedges, the fair value adjustments for both the hedged item and the hedging instrument are recorded through the income statement with any difference considered the ineffective portion of the hedge. The Company discontinues hedge accounting when i) the hedge is no longer considered highly effective or ii) the derivative matures or is sold or terminates.
	In the normal course of business, the Company enters into rate lock commitments, to finance residential mortgage loans. These commitments, which contain fixed expiration dates, offer the borrower an interest rate guarantee provided the loan meets underwriting guidelines and closes within the timeframe established by the Company. Interest rate risk arises on these commitments and subsequently closed loans if interest rates change between the time of the interest rate lock and the delivery of the loan to the investor. Loan commitments related to residential mortgage loans intended to be sold are considered derivatives and are marked to market through earnings. In addition to the effects of the change in market interest rate, the fair value measurement of the derivative also contemplates the expected cash flows to be received from the counterparty to the future sale of the loan. For purposes of calculating the aggregate fair value of the rate lock derivatives at year end, the Company assumes an estimated loan closing and investor delivery rate based on historical experience. The measurement of the estimated fair value of the rate lock derivatives is presented as realized and unrealized gains from mortgage banking activities.
	To mitigate the effect of interest rate risk inherent in providing rate lock commitments, the Company economically hedges its commitments by entering into best efforts forward delivery loan sales contracts. During the rate lock commitment period, these forward loan sales contract derivatives are marked to fair value. The fair values of loan commitments and the fair values of forward sales contracts generally move in opposite directions, and the net impact of the changes in these valuations on net income during the loan commitment period is generally inconsequential, excluding the effect of the fair value component associated with the projected cash flows from the loan delivery to the investor. At the closing of the loan, the rate lock commitment derivative matures and the Company records a loan held for sale and continues to be obligated under the same forward loan sales contract. The loans held for sale are then designated as the hedged item in a cash flow hedge. The derivative in this relationship is the forward loan sale commitment.
	When hedge accounting is discontinued because it is probable an anticipated loan sale will not occur, the Company recognizes immediately in earnings any gains and losses that were accumulated in other comprehensive income.
Stock-Based Compensation	'
	(q)
	Stock-Based Compensation
	The Company recognizes in the income statement the grant-date fair value of stock options and other equity-based compensation. The Company classifies stock awards as either an equity award or a liability award. Equity classified awards are valued as of the grant date using either an observable market price or a valuation methodology. Liability classified awards are valued at fair value at each reporting date. For the periods presented, all of the Company's stock options are classified as equity awards.
	The Company awards stock options with a graded-vesting period and as such has elected to recognize compensation costs over the requisite service period for the entire award. Total compensation costs charged against income for the years ended December 31, 2013, 2012, and 2011, was $687,000, $228,000, and $604,000, respectively. The total income tax benefit related to stock options exercised and recognized in the income statement for share-based compensation arrangements was $287,000, $600,000, and $361,000, for the years ended December 31, 2013, 2012, and 2011, respectively.
	At December 31, 2013, the Company had two stock-based employee compensation plans, which are described more fully in Note 20.
	Stock options are granted with an exercise price equal to the common stock's fair market value on the date of grant. Director stock options have ten year terms and vest and become fully exercisable on the grant date. Certain employee stock options have ten year terms and vest and become fully exercisable in 25% increments beginning as of the grant date. In addition, the Company has granted stock options to employees of the Company that have ten year terms and vest and become fully exercisable in 20% increments beginning after their first year of service.
	The weighted average per share fair values of stock option grants made in 2013, 2012, and 2011, were $5.83, $4.65, and $4.84, respectively. The fair values of the options granted were estimated on the grant date using the Black-Scholes option-pricing model based on the following weighted average assumptions:
		2013	2012	2011
	Estimated option life	6.5 years	6.5 years	6.5 years
	Risk free interest rate	1.14 - 2.21%	0.97 - 1.69%	1.45 - 2.81%
	Expected volatility	39.50%	42.10%	44.70%
	Expected dividend yield	1.23%	1.10%	1.02%
	Expected volatility is based upon the average annual historical volatility of the Company's common stock. The estimated option life is derived from the "simplified method" formula as described in Staff Accounting Bulletin No. 110. The risk free interest rate is based upon the seven-year U.S. Treasury note rate in effect at the time of grant. The expected dividend yield is based upon implied and historical dividend declarations.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Significant Accounting Policies	'
Schedule of weighted average assumptions used in estimation of the fair value of options granted as of the grant date using the Black-Scholes option-pricing model	'
		2013	2012	2011
	Estimated option life	6.5 years	6.5 years	6.5 years
	Risk free interest rate	1.14 - 2.21%	0.97 - 1.69%	1.45 - 2.81%
	Expected volatility	39.50%	42.10%	44.70%
	Expected dividend yield	1.23%	1.10%	1.02%

Investment_Securities_and_Othe1

Investment Securities and Other Investments (Tables)	12 Months Ended
	Dec. 31, 2013
Investment Securities and Other Investments	'
Schedule of approximate fair value and amortized cost of investment securities	'
		2013
	(In thousands)	Gross		Gross			Gross			Fair value
		Amortized		Unrealized			Unrealized
		cost		Gains			Losses
	Investment Securities Available-for-Sale
	U.S. government-sponsored agencies	$	75,562	$	2,914		$	(1,548	)	$	76,928
	Mortgage-backed securities		144,609		3,566			(346	)		147,829
	Municipal securities		113,716		3,426			(404	)		116,738
	U.S. treasury securities		4,992		37			—			5,029
	Pooled trust preferred securities		2,795		—			—			2,795
	Total	$	341,674	$	9,943		$	(2,298	)	$	349,319
	Investment Securities Held-to-Maturity
	Mortgage-backed securities		2,472		145			—			2,617
	Pooled trust preferred securities		4,005		—			(1,095	)		2,910
	Total	$	6,477	$	145		$	(1,095	)	$	5,527
		2012
	(In thousands)	Gross		Gross			Gross			Fair value
		Amortized		Unrealized			Unrealized
		cost		Gains			Losses
	Investment Securities Available-for-Sale
	U.S. government-sponsored agencies	$	55,756	$	5,777		$	—		$	61,533
	Mortgage-backed securities		110,214		8,704			(5	)		118,913
	Municipal securities		79,055		7,292			—			86,347
	U.S. treasury securities		4,968		142			—			5,110
	Total	$	249,993	$	21,915		$	(5	)	$	271,903
	Investment Securities Held-to-Maturity
	Mortgage-backed securities		3,705		242			—			3,947
	Pooled trust preferred securities		7,661		—			(2,589	)		5,072
	Total	$	11,366	$	242		$	(2,589	)	$	9,019
Schedule of fair value and amortized cost of investment securities by contractual maturity	'
		2013
		Available-for-Sale					Held-to-Maturity
	(In thousands)	Amortized		Fair			Amortized			Fair
		cost		Value			cost			Value
	Within One Year	$	8,549	$	8,690		$	—		$	—
	After 1 year but within 5 years	$	30,120	$	31,672		$	—		$	—
	After 5 years but within 10 years		61,665		64,876			—			—
	After 10 years		96,731		96,252			4,005			2,910
	Mortgage-backed securities		144,609		147,829			2,472			2,617
	Total	$	341,674	$	349,319		$	6,477		$	5,527
Schedule of the Company's investment securities' gross unrealized losses and their fair value, aggregated by investment category and the length of time that individual securities have been in a continuous unrealized loss position	'
		At December 31, 2013
		Less than 12 months					12 months or more						Total
	Investment Securities Available-for-Sale	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
	(In thousands)	Value		loss			Value			loss			Value		loss
	U.S. government sponsored agencies	$	38,554	$	(1,548	)	$	—		$	—		$	38,554	$	(1,548	)
	Mortgage-backed securities		46,563		(335	)		318			(11	)		46,881		(346	)
	Municipal securities		30,452		(404	)		—			—			30,452		(404	)
	Total temporarily impaired securities	$	115,569	$	(2,287	)	$	318		$	(11	)	$	115,887	$	(2,298	)
		Less than					12 months or more						Total
		12 months
	Investment Securities Held-to-Maturity	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
	(In thousands)	Value		loss			Value			loss			Value		loss
	Pooled trust preferred securities	$	—	$	—		$	2,910		$	(1,095	)	$	2,910	$	(1,095	)
	Total temporarily impaired securities	$	—	$	—		$	2,910		$	(1,095	)	$	2,910	$	(1,095	)
		At December 31, 2012
		Less than					12 months or more						Total
		12 months
	Investment Securities Available-for-Sale	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
	(In thousands)	Value		loss			Value			loss			Value		loss
	Mortgage-backed securities	$	—	$	—		$	362		$	(5	)	$	362	$	(5	)
	Total temporarily impaired securities	$	—	$	—		$	362		$	(5	)	$	362	$	(5	)
		Less than					12 months or more						Total
		12 months
	Investment Securities Held-to-Maturity	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
	(In thousands)	Value		loss			Value			loss			Value		loss
	Pooled trust preferred securities	$	—	$	—		$	5,072		$	(2,589	)	$	5,072	$	(2,589	)
	Total temporarily impaired securities	$	—	$	—		$	5,072		$	(2,589	)	$	5,072	$	(2,589	)
Schedule of investment securities that were pledged to secure borrowed funds and other balances	'
		2013
	(In thousands)	Carrying Value		Market Value
	FHLB advances	$	6,510	$	7,225
	Customer repurchase agreements		119,883		125,703
	Debtor in possession, public deposits, trust services division deposits and interest rate swap		61,695		64,144
		$	188,088	$	197,072
		2012
	(In thousands)	Carrying Value		Market Value
	FHLB advances	$	8,497	$	9,731
	Customer repurchase agreements		164,258		177,708
	Debtor in possession, public deposits, trust services division deposits and interest rate swap		63,180		68,699
		$	235,935	$	256,138

Investment_Securities_Trading_

Investment Securities - Trading (Tables)	12 Months Ended
	Dec. 31, 2013
Investment Securities - Trading	'
Schedule of trading securities	'
	(in thousands)	2013		2012
	Cash equivalents	$	506	$	464
	Equities		—		419
	Mutual funds		3,384		2,268
		$	3,890	$	3,151

Loans_Receivable_and_Allowance1

Loans Receivable and Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2013
Loans Receivable and Allowance for Loan Losses	'
Schedule of loan portfolio	'
	(In thousands)	2013			2012
	Commercial and industrial	$	219,156		$	222,961
	Real estate—commercial		1,048,579			827,243
	Real estate—construction		363,063			373,717
	Real estate—residential		299,484			260,352
	Home equity lines		109,481			117,647
	Consumer		4,159			4,204
			2,043,922			1,806,124
	Net deferred fees		(3,754	)		(2,695	)
	Loans receivable, net of fees		2,040,168			1,803,429
	Allowance for loan losses		(27,864	)		(27,400	)
	Loans receivable, net	$	2,012,304		$	1,776,029
Schedule of analysis of the change in the allowance for loan losses	'
	(In thousands)	2013			2012			2011
	Balance, beginning of year	$	27,400		$	26,159		$	24,210
	Provision for loan losses		(32	)		7,123			6,910
	Loans charged-off		(231	)		(6,919	)		(5,654	)
	Recoveries		727			1,037			693
	Balance, end of year	$	27,864		$	27,400		$	26,159
Schedule of analysis of the allowance for loan losses based on loan type, or segment, and the Company's loan portfolio, which identifies certain loans that are evaluated for individual or collective impairment	'
	Allowance for Loan Losses
	For the Year Ended December 31, 2013
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Allowance for loan losses:
	Beginning Balance, January 1	$	525		$	17,990		$	7,675		$	857		$	266		$	87			27,400
	Charge-offs		(42	)		—			—			(185	)		—			(4	)		(231	)
	Recoveries		311			289			21			104			—			2			727
	Provision for loan losses		2,535			(2,203	)		(2,360	)		1,645			343			8			(32	)
	Ending Balance, December 31, 2013	$	3,329		$	16,076		$	5,336		$	2,421		$	609		$	93		$	27,864
	Ending Balance, December 31, 2013:
	Individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Collectively evaluated for impairment		3,329			16,076			5,336			2,421			609			93			27,864
	Loans Receivable
	At December 31, 2013
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Loans Receivable:
	Ending Balance, December 31, 2013	$	219,156		$	1,048,579		$	363,063		$	299,484		$	109,481		$	4,159		$	2,043,922
	Ending Balance, December 31, 2013:
	Individually evaluated for impairment	$	814		$	1,738		$	775		$	—		$	51		$	—		$	3,378
	Collectively evaluated for impairment		218,342			1,046,841			362,288			299,484			109,430			4,159			2,040,544
	Allowance for Loan Losses
	For the Year Ended December 31, 2012
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Allowance for loan losses:
	Beginning Balance, January 1	$	3,390		$	13,377		$	6,495		$	1,709		$	1,119		$	69			26,159
	Charge-offs		(1,194	)		(4,959	)		—			(291	)		(460	)		(15	)		(6,919	)
	Recoveries		24			105			627			241			36			4			1,037
	Provision for loan losses		(1,695	)		9,467			553			(802	)		(429	)		29			7,123
	Ending Balance, December 31, 2012	$	525		$	17,990		$	7,675		$	857		$	266		$	87		$	27,400
	Ending Balance, December 31, 2012:
	Individually evaluated for impairment	$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Collectively evaluated for impairment		525			17,990			7,675			857			266			87			27,400
	Loans Receivable
	At December 31, 2012
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Loans Receivable:
	Ending Balance, December 31, 2012	$	222,961		$	827,243		$	373,717		$	260,352		$	117,647		$	4,204		$	1,806,124
	Ending Balance, December 31, 2012:
	Individually evaluated for impairment	$	2,064		$	1,657		$	4,725		$	—		$	—		$	—		$	8,446
	Collectively evaluated for impairment		220,897			825,586			368,992			260,352			117,647			4,204			1,797,678
Schedule of Company's nonaccrual and past due loans	'
	Nonaccrual and Past Due Loans
	At December 31, 2013
	(In thousands)
		30 - 59			60 - 89			90 Days			Total			Current			Total Loans			90 Days			Nonaccrual
		Days			Days			or More			Past Due									Past Due			Loans
		Past Due			Past Due			Past Due												and Still
								(includes												Accruing
								nonaccrual)
	Commercial and industrial	$	101		$	316		$	—		$	417		$	218,739			219,156		$	—		$	—
	Real estate—commercial
	Owner occupied		—			—			—			—			279,631			279,631			—			—
	Non-owner occupied		82			—			1,738			1,820			767,128			768,948			—			1,738
	Real estate—construction
	Residential		—			—			—			—			120,144			120,144			—			—
	Commercial		—			—			525			525			242,394			242,919			—			525
	Real estate—residential
	Single family		8			—			—			8			213,537			213,545			—			—
	Multi-family		—			—			—			—			85,939			85,939			—			—
	Home equity lines		—			—			51			51			109,430			109,481			—			51
	Consumer
	Installment		—			—			—			—			3,912			3,912			—			—
	Credit cards		—			—			—			—			247			247			—			—
		$	191		$	316		$	2,314		$	2,821		$	2,041,101		$	2,043,922		$	—		$	2,314
	Nonaccrual and Past Due Loans
	At December 31, 2012
	(In thousands)
		30 - 59			60 - 89			90 Days			Total			Current			Total Loans			90 Days			Nonaccrual
		Days			Days			or More			Past Due									Past Due			Loans
		Past Due			Past Due			Past Due												and Still
								(includes												Accruing
								nonaccrual)
	Commercial and industrial	$	—		$	—		$	2,064		$	2,064		$	220,897			222,961		$	—		$	2,064
	Real estate—commercial
	Owner occupied		—			—			—			—			255,343			255,343			—			—
	Non-owner occupied		—			—			3,800			3,800			568,100			571,900			—			3,800
	Real estate—construction
	Residential		—			—			—			—			84,551			84,551			—			—
	Commercial		—			—			1,762			1,762			287,404			289,166			—			1,762
	Real estate—residential
	Single family		—			—			—			—			209,740			209,740			—			—
	Multi-family		—			—			—			—			50,612			50,612			—			—
	Home equity lines		—			—			—			—			117,647			117,647			—			—
	Consumer
	Installment		—			—			—			—			3,916			3,916			—			—
	Credit cards		—			—			—			—			288			288			—			—
		$	—		$	—		$	7,626		$	7,626		$	1,798,498		$	1,806,124		$	—		$	7,626
Schedule of additional information on the Company's impaired loans that were evaluated for specific reserves, including the recorded investment on the statement of condition and the unpaid principal balance	'
	Impaired Loans
	At December 31, 2013
	(In thousands)
		Recorded			Unpaid Principal			Related			Interest Income
		Investment			Balance			Allowance			Recognized
	With no related allowance:
	Commercial and industrial	$	814		$	814		$	—		$	23
	Real estate—commercial
	Owner occupied		—			—			—			—
	Non-owner occupied		1,738			3,872			—			—
	Real estate—construction
	Residential		—			—			—			—
	Commercial		775			2,928			—			—
	Real estate—residential
	Single family		—			—			—			—
	Multi-family		—			—			—			—
	Home equity lines		51			51			—			—
	With related allowance:
	Commercial and industrial	$	—		$	—		$	—		$	—
	Real estate—commercial											—
	Owner occupied		—			—			—			—
	Non-owner occupied		—			—			—			—
	Real estate—construction											—
	Residential		—			—			—			—
	Commercial		—			—			—			—
	Real estate—residential											—
	Single family		—			—			—			—
	Multi-family		—			—			—			—
	Home equity lines		—			—			—			—
	By segment total:
	Commercial and industrial	$	814		$	814		$	—		$	23
	Real estate—commercial		1,738			3,872			—			—
	Real estate—construction		775			2,928			—			—
	Real estate—residential		—			—			—			—
	Home equity lines		51			51			—			—
	Total	$	3,378		$	7,665		$	—		$	23
	Impaired Loans
	At December 31, 2012
	(In thousands)
		Recorded			Unpaid Principal			Related			Interest Income
		Investment			Balance			Allowance			Recognized
	With no related allowance:
	Commercial and industrial	$	2,064		$	2,985		$	—		$	269
	Real estate—commercial
	Owner occupied		—			—			—			—
	Non-owner occupied		4,370			6,943			—			35
	Real estate—construction
	Residential		—			—			—			—
	Commercial		2,012			5,449			—			469
	Real estate—residential
	Single family		—			—			—			—
	Multi-family		—			—			—			—
	Home equity lines		—			—			—			—
	With related allowance:
	Commercial and industrial	$	—		$	—		$	—		$	—
	Real estate—commercial											—
	Owner occupied		—			—			—			—
	Non-owner occupied		—			—			—			—
	Real estate—construction											—
	Residential		—			—			—			—
	Commercial		—			—			—			—
	Real estate—residential											—
	Single family		—			—			—			—
Multi-family		—			—			—			—
Home equity lines		—			—			—			—
By segment total:
Commercial and industrial	$	2,064		$	2,985		$	—		$	269
Real estate—commercial		4,370			6,943			—			35
Real estate—construction		2,012			5,449			—			469
Real estate—residential		—			—			—			—
Home equity lines		—			—			—			—
Total	$	8,446		$	15,377		$	—		$	773
Schedule of reconciliation of beginning and ending balances on TDR	'
	Troubled Debt Restructurings
	At December 31, 2013
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Allowance for loan losses:
	Beginning Balance, January 1, 2013	$	1,776		$	3,800		$	1,762		$	—		$	—		$	—		$	7,338
	New TDRs		—			570			—			—			—			—			570
	Increases to existing TDRs		—			—			—			—			—			—			—
	Charge-Offs Post Modification		—			—			—			—			—			—			—
	Sales, paydowns, or other decreases		(1,776	)		(2,632	)		(1,237	)		—			—			—			(5,645	)
	Ending Balance, December 31, 2012	$	—		$	1,738		$	525		$	—		$	—		$	—		$	2,263
	Troubled Debt Restructurings
	At December 31, 2012
	(In thousands)
		Commercial and			Real Estate—			Real Estate—			Real Estate—			Home Equity			Consumer			Total
		Industrial			Commercial			Construction			Residential			Lines
	Allowance for loan losses:
	Beginning Balance, January 1, 2012	$	3,497		$	9,098		$	2,750		$	—		$	—		$	—		$	15,345
	New TDRs		—			—			—			—			—			—			—
	Increases to existing TDRs		—			—			—			—			—			—			—
	Charge-Offs Post Modification		(1,068	)		(3,749	)		—			—			—			—			(4,817	)
	Sales, paydowns, or other decreases		(653	)		(1,549	)		(988	)		—			—			—			(3,190	)
	Ending Balance, December 31, 2012	$	1,776		$	3,800		$	1,762		$	—		$	—		$	—		$	7,338
Summary of the risk ratings by portfolio segment and class segment	'
	Internal Risk Rating Grades
	At December 31, 2013
	(In thousands)
		Pass			OLEM			Substandard			Doubtful			Loss
	Commercial and industrial	$	217,755		$	587		$	814		$	—		$	—
	Real estate—commercial
	Owner occupied		279,631			—			—			—			—
	Non-owner occupied		753,872			13,338			1,738			—			—
	Real estate—construction
	Residential		120,144			—			—			—			—
	Commercial		242,144			—			775			—			—
	Real estate—residential
	Single family		213,537			8			—			—			—
	Multi-family		85,939			—			—			—			—
	Home equity lines		109,430			—			51			—			—
	Consumer
	Installment		3,912			—			—			—			—
	Credit cards		247			—			—			—			—
		$	2,026,611		$	13,933		$	3,378		$	—		$	—
	Internal Risk Rating Grades
	At December 31, 2012
	(In thousands)
		Pass			OLEM			Substandard			Doubtful			Loss
	Commercial and industrial	$	220,266		$	631		$	2,064		$	—		$	—
	Real estate—commercial
	Owner occupied		255,343			—			—			—			—
	Non-owner occupied		542,983			27,260			1,657			—			—
	Real estate—construction
	Residential		84,551			—			—			—			—
	Commercial		281,163			3,278			4,725			—			—
	Real estate—residential
	Single family		209,740			—			—			—			—
	Multi-family		50,612			—			—			—			—
	Home equity lines		117,647			—			—			—			—
	Consumer
	Installment		3,916			—			—			—			—
	Credit cards		288			—			—			—			—
		$	1,766,509		$	31,169		$	8,446		$	—		$	—

Loans_Held_for_Sale_Tables

Loans Held for Sale (Tables)	12 Months Ended
	Dec. 31, 2013
Loans Held for Sale	'
Schedule of loans held for sale portfolio	'
	(In thousands)	2013		2012
	Residential	$	311,493	$	728,973
	Construction-to-permanent		60,168		44,399
			371,661		773,372
	Net deferred costs		2,332		12,379
	Loans held for sale, net	$	373,993	$	785,751

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Intangible Assets	'
Schedule of information concerning amortizable other intangible assets	'
		Mortgage Banking				Wealth Management				Total
						and Trust Services
	(In thousands)	Gross		Accumulated		Gross		Accumulated		Gross		Accumulated
		Carrying		Amortization		Carrying		Amortization		Carrying		Amortization
		Amount				Amount				Amount
	Balance at December 31, 2011	$	1,781	$	1,435	$	616	$	616	$	2,397	$	2,051
	2012 activity:
	Customer relationship intangibles		—		198		—		—		—		198
	Trade name		—		—		—		—		—		—
	Balance at December 31, 2012	$	1,781	$	1,633	$	616	$	616	$	2,397	$	2,249
	2013 activity:
	Customer relationship intangibles		—		148		—		—		—		148
	Trade name		—		—		—		—		—		—
	Balance at December 31, 2013	$	1,781	$	1,781	$	616	$	616	$	2,397	$	2,397
Schedule of the carrying amount of goodwill	'
	(In thousands)	Commercial		Mortgage		Total
		Banking		Banking
	Balance at December 31, 2013 and 2012	$	24	$	10,120	$	10,144

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Premises and Equipment	'
Schedule of the components of premises and equipment	'
	(in thousands)	2013			2012
	Land	$	4,350		$	4,350
	Buildings		6,680			6,680
	Furniture and equipment		25,478			22,509
	Leasehold improvements		10,807			9,206
	Total cost		47,315			42,745
	Less accumulated depreciation and amortization		(26,926	)		(23,553	)
	Premises and equipment, net	$	20,389		$	19,192
Schedule of minimum future rental payments under the non cancelable operating leases	'
	Year ending December 31,	Amount
		(In thousands)
	2014	$	8,408
	2015		6,933
	2016		5,372
	2017		3,830
	2018		3,437
	Thereafter		8,900
		$	36,880
Schedule of future minimum lease payments under noncancelable subleasing arrangements	'
	Year ending December 31,	Amount
		(In thousands)
	2014	$	47
	2015		49
	2016		50
	2017		52
	2018		31
	Thereafter		—
		$	229

Deposits_Tables

Deposits (Tables)	12 Months Ended
	Dec. 31, 2013
Deposits	'
Schedule of components of deposits	'
	(In thousands)	2013		2012
	Non-interest bearing demand deposits	$	433,749	$	351,815
	Interest bearing deposits:
	Interest checking		398,136		347,697
	Money market and statement savings		475,707		430,391
	Certificates of deposit		751,267		1,113,855
	Total interest-bearing deposits		1,625,110		1,891,943
	Total deposits	$	2,058,859	$	2,243,758
Schedule of interest expense by deposit categories	'
	(In thousands)	2013		2012		2011
	Interest checking	$	2,170	$	2,457	$	255
	Money market and statement savings		1,389		1,689		1,534
	Certificates of deposit		9,457		10,693		11,771
	Total interest expense	$	13,016	$	14,839	$	13,560
Schedule of maturities of certificates of deposit with a minimum denomination of $100000	'
	At December 31, 2013, the scheduled maturities of certificates of deposit with a minimum denomination of $100,000 were as follows:
	Maturities:
	(In thousands)	Fixed Term		No-Penalty		Total
	Three months or less	$	116,690	$	7,196	$	123,886
	Over three months through six months		43,466		2,455		45,921
	Over six months through twelve months		46,909		2,105		49,014
	Over twelve months		90,186		40,970		131,156
		$	297,251	$	52,726	$	349,977
Schedule of maturities of certificates of deposit	'
	At December 31, 2013, the scheduled maturities of certificates of deposit were as follows:
	(In thousands)
	2014	$	428,637
	2015		157,204
	2016		97,926
	2017		45,997
	2018		18,437
	2019		3,066
		$	751,267

Other_Borrowed_Funds_Tables

Other Borrowed Funds (Tables)	12 Months Ended
	Dec. 31, 2013
Other Borrowed Funds	'
Schedule of other borrowed funds	'
	(In thousands)	2013			2012
	Fixed rate FHLB advances	$	315,000		$	215,000
	Federal funds purchased		45,000			50,000
	Customer repurchase agreements		94,613			106,656
	Payable to Statutory Trust I		20,619			20,619
		$	475,232		$	392,275
Schedule of contractual maturities of the fixed rate advances	'
	(In thousands)
	At December 31, 2013
	Type of Advance	Interest Rate		Advance Term		Maturity Date			Balance
	Fixed Rate Credit	0.17%		1 month			2014		$	100,000
	Fixed Rate Hybrid	3.37 - 3.50%		48 months			2015			10,000
	Fixed Rate Hybrid	2.03%		48 months			2016			10,000
	Fixed Rate Hybrid	3.45%		60 months			2016			5,000
	Convertible	3.93 - 4.55%		120 months			2016			50,000
	Fixed Rate Hybrid	2.46 - 2.65%		60 months			2017			30,000
	Convertible	3.10 - 4.85%		120 months			2017			60,000
	Convertible	2.81 - 4.00%		120 months			2018			20,000
	Fixed Rate Hybrid	2.98%		84 months			2019			10,000
	Fixed Rate Hybrid	3.80 - 4.01%		120 months			2022			20,000
	Total FHLB Advances	3.09%							$	315,000
	(In thousands)
	At December 31, 2012
	Type of Advance	Interest Rate		Advance Term		Maturity Date			Balance
	Fixed Rate Hybrid	3.37 - 3.50%		48 months			2015		$	10,000
	Fixed Rate Hybrid	2.03%		48 months			2016			10,000
	Fixed Rate Hybrid	3.45%		60 months			2016			5,000
	Convertible	3.93 - 4.55%		120 months			2016			50,000
	Fixed Rate Hybrid	2.46 - 2.65%		60 months			2017			30,000
	Convertible	3.10 - 4.85%		120 months			2017			60,000
	Convertible	2.81 - 4.00%		120 months			2018			20,000
	Fixed Rate Hybrid	2.98%		84 months			2019			10,000
	Fixed Rate Hybrid	3.80 - 4.01%		120 months			2022			20,000
	Total FHLB Advances	3.61%							$	215,000
Schedule of maturities of other borrowed funds	'
	The scheduled maturities of other borrowed funds at December 31, 2013 were as follows:
	(In thousands)	2014			2015			2016			2017		2018		2019 and
															Thereafter
	FHLB advances	$	100,000		$	10,000		$	65,000		$	90,000	$	20,000	$	30,000
	Customer repurchase agreements		94,613			—			—			—		—		—
	Federal funds sold		45,000			—			—			—		—		—
	Payable to Statutory Trust I		—			—			—			—		—		20,619
		$	239,613		$	10,000		$	65,000		$	90,000	$	20,000	$	50,619

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Taxes	'
Schedule of reconciliation of provision for income tax expense computed by applying the federal corporate tax rate to income before taxes	'
	(In thousands)	2013			2012			2011
	Income tax at federal corporate rate of 35%	$	13,189		$	23,784		$	14,742
	Change in valuation allowance		245			671			—
	Change in the carrying rate of deferred tax assets and liabilities		—			—			1
	Expected state tax benefit of losses of nonbank entities		—			—			—
	State tax expense, net of federal tax benefit		77			226			263
	Nontaxable income		(1,466	)		(2,152	)		(1,152	)
	Nondeductible expenses		184			400			27
	Other		(54	)		(271	)		241
		$	12,175		$	22,658		$	14,122
Schedule of components of income tax expense	'
	(In thousands)	2013			2012			2011
	Included in net income
	Current
	Federal	$	14,432		$	16,355		$	12,675
	State		609			486			361
	Total current		15,041			16,841			13,036
	Deferred
	Federal		(2,799	)		5,695			1,057
	State		(67	)		122			29
	Total deferred		(2,866	)		5,817			1,086
	Total included in net income	$	12,175		$	22,658		$	14,122
	Included in shareholders' equity:
	Deferred tax expense related to the change in the net unrealized gain on investment securities available for sale	$	(5,064	)	$	391		$	4,468
	Deferred tax expense (benefit) related to the change in the net unrealized gain (loss) on derivative instruments designated as cash flow hedges		589			470			(572	)
	Total included in shareholders' equity	$	(4,475	)	$	861		$	3,896
Schedule of the tax effects of temporary differences between the financial reporting basis and income tax basis of assets and liabilities	'
	(In thousands)	2013			2012
	Deferred tax assets:
	Allowance for loan losses	$	9,988		$	9,761
	Net operating state loss carryforwards		2,490			2,258
	Unrealized losses on derivative instruments designated as cash flow hedges		22			611
	Deferred compensation		5,424			3,965
	Other		991			1,999
	Total gross deferred tax assets		18,915			18,594
	Less valuation allowance		(2,490	)		(2,258	)
	Net deferred tax assets		16,425			16,336
	Deferred tax liabilities:
	Unrealized gains on investment securities available-for-sale		(2,740	)		(7,805	)
	Goodwill and intangibles, net		(601	)		(149	)
	Fair value adjustments		(5,910	)		(8,751	)
	Depreciation		(926	)		(865	)
	Prepaid expenses		(190	)		(15	)
	Loan origination costs		(663	)		(697	)
	Total gross deferred tax liabilities		(11,030	)		(18,282	)
	Net deferred tax asset (liability)	$	5,395		$	(1,946	)

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2013
Derivatives in cash flow hedging relationships	'
Derivative Instruments and Hedging Activities	'
Schedule of information pertaining to outstanding interest rate swap agreements	'
	These interest rate swap agreements matured during 2013.
	(Dollars in thousands)	2012
	Notional amount	$	10,000
	Weighted average pay rate		3.97	%
	Weighted average receive rate		1.54	%
	Weighted average maturity in years		1 years
	Unrealized gain (loss) relating to interest rate swaps	$	119
Derivatives in fair value hedging relationships	'
Derivative Instruments and Hedging Activities	'
Schedule of information pertaining to outstanding interest rate swap agreements	'
	This interest rate swap agreement matured during 2013.
	(Dollars in thousands)	2012
	Notional amount	$	11,174
	Weighted average pay rate		5.42	%
	Weighted average receive rate		0.25	%
	Weighted average maturity in years		1 year
	Unrealized loss relating to interest rate swaps	$	478

Fair_Value_of_Derivative_Instr1

Fair Value of Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value of Derivative Instruments and Hedging Activities

'

Schedule of the derivative instruments' location on the Company's statement of condition and the fair value of those instruments

'

Derivative Instruments and Hedging Activities

At December 31, 2013

(in thousands)

Asset Derivatives

Liability Derivatives

Balance Sheet

Fair Value

Balance Sheet

Fair Value

Location

Location

Derivatives Designated as Hedging Instruments

Forward Loan Sales Commitments

Accrued Interest

5,489

Accrued Interest

4,043

Receivable and

Payable and Other

Other Assets

Liabilities

Total Derivatives Designated as Hedging Instruments

5,489

4,043

Derivatives Not Designated as Hedging Instruments

Rate Lock and Forward Loan Sales Commitments

Accrued Interest

10,989

Accrued Interest

9

Receivable and

Payable and Other

Other Assets

Liabilities

Rate Lock Commitments

Accrued Interest

9

Accrued Interest

1,554

Receivable and

Payable and Other

Other Assets

Liabilities

Total Derivatives Not Designated as Hedging Instruments

10,998

1,563

Total Derivatives

$

16,487

$

5,606

Derivative Instruments and Hedging Activities

At December 31, 2012

(in thousands)

Asset Derivatives

Liability Derivatives

Balance Sheet

Fair Value

Balance Sheet

Fair Value

Location

Location

Derivatives Designated as Hedging Instruments

Interest Rate Swaps

Accrued Interest

$

—

Accrued Interest

$

616

Receivable and

Payable and Other

Other Assets

Liabilities

Forward Loan Sales Commitments

Accrued Interest

2,136

Accrued Interest

3,623

Receivable and

Payable and Other

Other Assets

Liabilities

Total Derivatives Designated as Hedging Instruments

2,136

4,239

Derivatives Not Designated as Hedging Instruments

Rate Lock and Forward Loan Sales Commitments

Accrued Interest

24,657

Accrued Interest

449

Receivable and

Payable and Other

Other Assets

Liabilities

Rate Lock Commitments

Accrued Interest Receivable and Other Assets

449

Accrued Interest Payable and Other Liabilities

91

Total Derivatives Not Designated as Hedging Instruments

25,106

540

Total Derivatives

$

27,242

$

4,779

Schedule of the gains and losses related to derivative instruments

'

Impact of Derivative Instruments on the Statement of Income

For the Year Ended December 31, 2013

(in thousands)

Derivatives in Fair Value Hedging

Locations of Gain

Amount of Gain

Location of Gain

Amount of Gain

Relationships

(Loss)

(Loss)

(Loss)

(Loss) Recognized in

Recognized

Recognized

Recognized

Income on

in Income on

in Income on

in Income on

Hedged Item

Derivative

Derivative

Hedged Item

Interest Rate Swaps

Other Income

$

478

Other Income

$

(478

)

Total

$

478

$

(478

)

Derivatives in Cash Flow

Amount of Gain

Location of

Amount of Gain (Loss)

Location of Gain

Amount of Gain

Hedging Relationships

(Loss) Recognized

Gain (Loss)

Reclassified

(Loss) Recognized in

(Loss)

in Other

Reclassified

from Accumulated

Income on

Recognized

Comprehensive

from Accumulated

Other

Derivative

in Income on

Income on

Other

Comprehensive

(Ineffective Portion

Derivative

Derivative (Effective

Comprehensive

Income into

and Amount

(Ineffective

Portion)

Income into

Income (Effective

Excluded from

Portion and

Income (Effective

Portion)

Effectiveness

Amount

Portion)

Testing)

Excluded

from

Effectiveness

Testing)

Interest Rate Swaps

$

89

Other Income

$

—

Other Income

$

—

Forward Loan Sales Commitments

1,020

Other Income

3,774

Other Income

—

Total

$

1,109

$

3,774

$

—

Derivatives Not Designated as Hedging Instruments

Amount of Gain

Location of Gain (Loss)

(Loss) Recognized

Recognized in Income on Derivative

in Income on

Derivative

Interest Rate Lock Commitment

$

59,566

Realized and unrealized gains on mortgage banking activities

Forward Loan Sales Commitments

6,421

Other Income

Rate Lock Commitments

(6,421

)

Other Income

Total

$

59,566

Impact of Derivative Instruments on the Statement of Income

For the Year Ended December 31, 2012

(in thousands)

Derivatives in Fair Value Hedging

Locations of Gain

Amount of Gain

Location of Gain

Amount of Gain

Relationships

(Loss) Recognized

(Loss) Recognized

(Loss) Recognized in

(Loss) Recognized in

in Income

in Income

Income on

Income on

on Derivative

on Derivative

Hedged Item

Hedged Item

Interest Rate Swaps

Other Income

$

522

Other Income

$

(522

)

Total

$

522

$

(522

)

Derivatives in Cash Flow

Amount of Gain

Location of Gain

Amount of Gain

Location of Gain

Amount of Gain

Hedging Relationships

(Loss) Recognized

(Loss) Reclassified

(Loss) Reclassified

(Loss) Recognized in

(Loss)

in Other

from Accumulated

from Accumulated

Income on

Recognized in

Comprehensive

Other

Other Comprehensive

Derivative

Income on

Income on Derivative

Comprehensive

Income into

(Ineffective

Derivative

(Effective

Income into

Income (Effective

Portion and

(Ineffective

Portion)

Income (Effective

Portion)

Amount Excluded

Portion and

Portion)

from Effectiveness

Amount

Testing)

Excluded

from Effectiveness

Testing)

Interest Rate Swaps

$

119

Other Income

$

—

Other Income

$

—

Forward Loan Sales Commitments

666

Other Income

(756

)

Other Income

—

Total

$

785

$

(756

)

$

—

Derivatives Not Designated as Hedging Instruments

Amount of Gain

Location of Gain (Loss)

(Loss) Recognized

Recognized in Income on Derivative

in Income

on Derivative

Interest Rate Lock Commitment

$

79,397

Realized and unrealized gains on mortgage banking activities

Forward Loan Sales Commitments

(2,875

)

Other Income

Rate Lock Commitments

2,875

Other Income

Total

$

79,397

Regulatory_Matters_Tables

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2013
Regulatory Matters	'
Schedule of the regulatory capital	'
		Actual					For Capital						To Be Well
							Adequacy Purposes						Capitalized Under
													Prompt Corrective
													Action Provisions
		Amount		Ratio			Amount			Ratio			Amount			Ratio
	At December 31, 2013
	(In thousands)
	Total capital to risk weighted assets	$	349,894		12.89	%	$	217,111	³		8	%	$	271,389	³		10	%
	Tier I capital to risk weighted assets		321,513		11.85	%		108,555	³		4	%		162,833	³		6	%
	Tier I capital to average assets		321,513		11.7	%		109,928	³		4	%		137,410	³		5	%
	At December 31, 2012
	(In thousands)
	Total capital to risk weighted assets	$	328,547		13.04	%	$	201,530	³		8	%	$	251,913	³		10	%
	Tier I capital to risk weighted assets		300,732		11.94	%		100,765	³		4	%		151,148	³		6	%
	Tier I capital to average assets		300,732		10.49	%		114,693	³		4	%		143,366	³		5	%
Bank	'
Regulatory Matters	'
Schedule of the regulatory capital	'
		Actual					For Capital						Capitalized Under
							Adequacy Purposes						Prompt Corrective
													Action Provisions
		Amount		Ratio			Amount			Ratio			Amount			Ratio
	At December 31, 2013
	(In thousands)
	Total capital to risk-weighted assets	$	343,392		12.73	%	$	215,733	³		8	%	$	269,666	³		10	%
	Tier I capital to risk-weighted assets		315,011		11.68	%		107,867	³		4	%		161,800	³		6	%
	Tier I capital to average assets		315,011		11.54	%		109,212	³		4	%		136,515	³		5	%
	At December 31, 2012
	(In thousands)
	Total capital to risk-weighted assets	$	315,511		12.59	%	$	200,440	³		8	%	$	250,550	³		10	%
	Tier I capital to risk-weighted assets		287,695		11.48	%		100,220	³		4	%		150,330	³		6	%
	Tier I capital to average assets		287,695		10.08	%		114,196	³		4	%		142,745	³		5	%

RelatedParty_Transactions_Tabl

Related-Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2013
Related-Party Transactions	'
Schedule of analysis of activity for loans to related parties	'
	(In thousands)	2013			2012
	Balance, beginning of year	$	32,604		$	34,988
	New loans		292			1,236
	Loans paid off or paid down		(4,599	)		(3,620	)
	Balance, end of year	$	28,297		$	32,604

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Common Share	'
Schedule of calculation of basic and diluted earnings per common share	'
	(In thousands, except per share data)	2013		2012		2011
	Net income	$	25,510	$	45,297	$	27,998
	Weighted average shares for basic		30,687		29,654		29,401
	Weighted average shares for diluted		31,077		29,996		29,784
	Basic earnings per common share	$	0.83	$	1.53	$	0.95
	Diluted earnings per common share	$	0.82	$	1.51	$	0.94
Schedule of composition of basic outstanding shares	'
	(in thousands)	2013		2012		2011
	Weighted average shares outstanding—basic		30,271		29,244		28,938
	Weighted average shares attributable to deferred compensation plans		416		410		463
	Total weighted average shares—basic		30,687		29,654		29,401
Schedule of composition of diluted outstanding shares	'
	(in thousands)	2013		2012		2011
	Weighted average shares outstanding—basic		30,271		29,244		28,938
	Weighted average shares attributable to deferred compensation plans		628		664		694
	Weighted average shares attributable to vested stock options		151		88		152
	Incremental shares from unvested stock options		27		—		—
	Total weighted average shares—diluted		31,077		29,996		29,784

Director_and_Employee_StockBas1

Director and Employee Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Director and Employee Stock-Based Compensation Plans	'
Summary of stock option activity	'
		Number of			Weighted			Weighted			Aggregate
		Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Term (Years)
	Outstanding at December 31, 2012		851,358		$	10.21
	Granted		278,250			16.23
	Exercised		(106,355	)		8.64
	Forfeited		(11,700	)		10.18
	Outstanding at December 31, 2013		1,011,553		$	12.03			5.44		$	6,025,243
	Options exercisable at December 31, 2013		722,403		$	11.15			4.25		$	4,943,418
		Number of			Weighted			Weighted			Aggregate
		Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Term (Years)
	Outstanding at December 31, 2011		1,832,860		$	9.38
	Granted		63,750			12.11
	Exercised		(1,027,702	)		8.84
	Forfeited		(17,550	)		10.2
	Outstanding at December 31, 2012		851,358		$	10.21			4.67		$	5,182,708
	Options exercisable at December 31, 2012		682,458		$	10.19			3.84		$	4,166,600
		Number of			Weighted			Weighted			Aggregate
		Shares			Average			Average			Intrinsic
					Exercise			Remaining			Value
					Price			Contractual
								Term (Years)
	Outstanding at December 31, 2010		2,197,289		$	8.67
	Granted		153,100			11.2
	Exercised		(428,779	)		6.13
	Forfeited		(88,750	)		10.77
	Outstanding at December 31, 2011		1,832,860		$	9.38			4.19		$	2,493,627
	Options exercisable at December 31, 2011		1,659,160		$	9.38			3.74		$	2,250,771
Schedule of information pertaining to stock options outstanding	'
	At December 31, 2013
		Options Outstanding								Options Exercisable
					Weighed Average
	Range of	Number			Remaining		Exercise			Number			Weighted Average
	Exercise Prices	Outstanding			Contractual Life		Price			Exercisable			Exercise
													Price
	$5.95 - $8.28		88,510		5.1 years		$	6.45			72,560		$	6.52
	$8.39 - $9.59		62,500		1.9 years			8.89			60,700			8.9
	$9.78 - $10.91		201,224		3.1 years			10.34			175,224			10.38
	$11.03 - $12.65		368,069		4.5 years			11.6			311,469			11.58
	$13.00 - $15.02		68,500		9.2 years			14.76			52,350			14.95
	$15.32 - $17.82		222,750		9.2 years			16.54			50,100			16.57
	Outstanding at year end		1,011,553		5.44			12.03			722,403			11.15
Summary of the status of the Company's non-vested stock options and changes during the reporting period	'
		Number of			Weighted
		Shares			Average
					Grant Date
					Fair Value
	Balance at December 31, 2010		211,500		$	3.93
	Granted		153,100			4.84
	Vested		(144,750	)		4.71
	Forfeited		(46,150	)		4.47
	Balance at December 31, 2011		173,700		$	3.94
	Granted		63,750			4.65
	Vested		(54,220	)		3.99
	Forfeited		(14,330	)		4.21
	Balance at December 31, 2012		168,900		$	4.17
	Granted		278,250			5.83
	Vested		(150,250	)		5.09
	Forfeited		(7,750	)		4.21
	Balance at December 31, 2013		289,150		$	5.29

Segment_Reporting_Tables

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting	'
Schedule of information about the reportable segments and reconciliation of this information to the consolidated financial statements	'
	(In thousands)
	At and for the Year Ended December 31, 2013:
		Commercial			Mortgage			Wealth			Other			Intersegment			Consolidated
		Banking			Banking			Management						Elimination
								Services
	Net interest income	$	90,563		$	2,474		$	—		$	(692	)	$	—		$	92,345
	Provision for loan losses		(117	)		85			—			—			—			(32	)
	Non-interest income		3,767			24,760			1,337			85			(38	)		29,911
	Non-interest expense		43,832			35,185			1,580			4,044			(38	)		84,603
	Provision (benefit) for income taxes		16,734			(2,821	)		(81	)		(1,657	)		—			12,175
	Net income (loss)	$	33,881		$	(5,215	)	$	(162	)	$	(2,994	)	$	—		$	25,510
	Total Assets	$	2,862,039		$	380,124		$	2,266		$	347,288		$	(697,487	)	$	2,894,230
	At and for the Year Ended December 31, 2012:
		Commercial			Mortgage			Wealth			Other			Intersegment			Consolidated
		Banking			Banking			Management						Elimination
								Services
	Net interest income	$	89,472		$	2,365		$	—		$	(834	)	$	—		$	91,003
	Provision for loan losses		6,865			258			—			—			—			7,123
	Non-interest income		5,868			54,794			2,623			176			(69	)		63,392
	Non-interest expense		43,495			29,529			2,656			3,706			(69	)		79,317
	Provision (benefit) for income taxes		14,436			9,764			(14	)		(1,528	)		—			22,658
	Net income (loss)	$	30,544		$	17,608		$	(19	)	$	(2,836	)	$	—		$	45,297
	Total Assets	$	2,954,412		$	815,820		$	2,693		$	329,328		$	(1,063,066	)	$	3,039,187
	At and for the Year Ended December 31, 2011:
		Commercial			Mortgage			Wealth			Other			Intersegment			Consolidated
		Banking			Banking			Management						Elimination
								Services
	Net interest income	$	77,456		$	2,522		$	—		$	(816	)	$	—		$	79,162
	Provision for loan losses		6,910			—			—			—			—			6,910
	Non-interest income		6,116			25,592			2,552			161			(88	)		34,333
	Non-interest expense		42,202			16,032			2,610			3,709			(88	)		64,465
	Provision (benefit) for income taxes		11,397			4,291			(29	)		(1,537	)		—			14,122
	Net income (loss)	$	23,063		$	7,791		$	(29	)	$	(2,827	)	$	—		$	27,998
	Total Assets	$	2,549,326		$	531,403		$	590		$	278,820		$	(757,423	)	$	2,602,716

Financial_Instruments_with_Off1

Financial Instruments with Off Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2013
Financial Instruments with Off Balance Sheet Risk	'
Summary of the contract amount of the Bank's exposure to off-balance-sheet risk	'
	(In thousands)
		2013		2012
	Financial instruments whose contract amounts represent potential credit risk:
	Commitments to extend credit	$	1,486,572	$	1,248,766
	Standby letters of credit		28,008		36,466

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Schedule of assets and liabilities measured at fair value on a recurring basis	'
	At December 31, 2013
	(In thousands)
				Fair Value Measurements Using
	Description	Balance		Quoted Prices in		Significant		Significant
				Active markets for		Other		Unobservable
				Identical Assets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Investment securities available-for-sale:
	U.S. treasury securities	$	5,029	$	5,029	$	—	$	—
	U.S. government-sponsored agencies		76,928				76,928		—
	Mortgage-backed securities		147,829		—		147,829		—
	Municipal securities		116,738		—		116,738		—
	Pooled trust preferred securities		2,795		—		2,795		—
	Total investment securities available-for-sale		349,319		5,029		344,290		—
	Investment securities—trading		3,890		—		3,890		—
	Bank-owned life insurance		32,063		—		32,063		—
	Derivative asset—rate lock and forward loan sales commitments		16,478		—		16,478		—
	Derivative asset—interest rate lock commitments		9		—		9		—
	Derivative liability—rate lock and forward loan sales commitments		4,052		—		4,052		—
	Derivative liability—interest rate lock commitments		1,554		—		1,554		—
	At December 31, 2012
	(In thousands)
				Fair Value Measurements Using
	Description	Balance		Quoted Prices in		Significant		Significant
				Active markets for		Other		Unobservable
				Identical Assets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Investment securities available-for-sale:
	U.S. treasury securities	$	5,110	$	5,110	$	—	$	—
	U.S. government-sponsored agencies		61,533				61,533		—
	Mortgage-backed securities		118,913		—		118,913		—
	Municipal securities		86,347		—		86,347		—
	Total investment securities available-for-sale		271,903		5,110		266,793		—
	Investment securities—trading		3,151		—		3,151		—
	Loan receivable designated in fair value hedge		11,652		—		11,652		—
	Bank-owned life insurance		31,652		—		31,652		—
	Derivative liability—interest rate swaps		616		—		616		—
	Derivative asset—rate lock and forward loan sales commitments		26,793		—		26,793		—
	Derivative asset—interest rate lock commitments		449		—		449		—
	Derivative liability—rate lock and forward loan sales commitments		4,072		—		4,072		—
	Derivative liability—interest rate lock commitments		91		—		91		—
Schedule of certain assets and liabilities measured at fair value on a nonrecurring basis	'
	At December 31, 2013
	(In thousands)
				Fair Value Measurements Using
	Description	Balance		Quoted Prices in		Significant		Significant
				Active markets for		Other		Unobservable
				Identical Assets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Pooled trust preferred securities	$	2,910	$	—	$	—	$	2,910
	Loans receivable—evaluated for impairment		3,378		—		301		3,077
	At December 31, 2012
	(In thousands)
				Fair Value Measurements Using
	Description	Balance		Quoted Prices in		Significant		Significant
				Active markets for		Other		Unobservable
				Identical Assets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Pooled trust preferred securities	$	5,072	$	—	$	—	$	5,072
	Loans receivable—evaluated for impairment		8,446		—		820		7,626
Summary of the carrying amount of financial assets and liabilities that the Company has not recorded at fair value on a recurring basis	'
		31-Dec-13
						Fair Value Measurements Using
		Carrying		Estimated
	(In thousands)	Amount		Fair Value		Level 1		Level 2		Level 3
	Financial assets:
	Cash and cash equivalents	$	29,209	$	29,209	$	29,209	$	—	$	—
	Investment securities available-for-sale		349,319		349,319		5,029		344,290		—
	Investment securities held-to-maturity and other investments		25,545		24,595		—		21,685		2,910
	Loans held for sale		373,993		373,993		—		373,993		—
	Loans receivable, net		2,012,304		2,024,835		—		301		2,024,534
	Accrued interest receivable		7,939		7,939		7,939		—		—
	Financial liabilities:
	Demand deposits	$	433,749	$	433,749	$	433,749	$	—	$	—
	Interest checking		398,136		398,136		398,136		—		—
	Money market and statement savings		475,707		475,707		475,707		—		—
	Certificates of deposit		751,267		756,191		—		756,191		—
	Other borrowed funds		475,232		491,236		—		491,236		—
	Accrued interest payable		869		869		869		—		—
		December 31, 2012
						Fair Value Measurements Using
		Carrying		Estimated
	(In thousands)	Amount		Fair Value		Level 1		Level 2		Level 3
	Financial assets:
	Cash and cash equivalents	$	67,140	$	67,140	$	67,140	$	—	$	—
	Investment securities available-for-sale		271,903		271,903		5,110		266,793		—
	Investment securities held-to-maturity and other investments		25,668		23,321		—		18,249		5,072
	Loans held for sale		785,751		785,751		—		785,751		—
	Loans receivable, net		1,776,029		1,823,356		—		12,472		1,810,884
	Accrued interest receivable		7,333		7,333		7,333		—		—
	Financial liabilities:
	Demand deposits	$	351,815	$	351,815	$	351,815	$	—	$	—
	Interest checking		347,697		347,697		347,697		—		—
	Money market and statement savings		430,391		430,391		430,391		—		—
	Certificates of deposit		1,113,855		1,124,235		—		1,124,235		—
	Other borrowed funds		392,275		418,808		—		418,808		—
	Accrued interest payable		974		974		974		—		—

Parent_Company_Only_Financial_1

Parent Company Only Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2013
Parent Company Only Financial Statements	'
Schedule of condensed financial statements	'
	(In thousands)
		2013			2012
	Assets
	Cash and cash equivalents	$	4,311		$	7,141
	Investment securities—Trading		3,890			3,151
	Other investments		113			113
	Investment in subsidiaries		333,076			315,367
	Premises and equipment, net		632			671
	Goodwill		24			24
	Other assets		5,242			2,861
	Total assets	$	347,288		$	329,328
	Liabilities and Shareholders' Equity
	Debt to Cardinal Statutory Trust I	$	20,619		$	20,619
	Other liabilities		6,137			643
	Total liabilities		26,756			21,262
	Total shareholders' equity	$	320,532		$	308,066
	Total liabilities and shareholders' equity	$	347,288		$	329,328
Schedule of condensed statements of operations	'
	(In thousands)
		2013			2012			2011
	Income:
	Net interest expense	$	(692	)	$	(834	)	$	(816	)
	Net realized and unrealized trading losses		68			158			144
	Other income		17			18			17
	Total income (loss)		(607	)		(658	)		(655	)
	Expense—general and administrative		4,044			3,706			3,709
	Net loss before income taxes and equity in undistributed earnings of subsidiaries		(4,651	)		(4,364	)		(4,364	)
	Income tax benefit		(1,657	)		(1,528	)		(1,537	)
	Equity in undistributed earnings of subsidiaries		28,504			48,133			30,825
	Net income	$	25,510		$	45,297		$	27,998
Schedule of condensed statements of cash flows	'
	(In thousands)
		2013			2012			2011
	Cash flows from operating activities:
	Net income	$	25,510		$	45,297		$	27,998
	Adjustments to reconcile net income to net cash provided by operating activities:
	Equity in undistributed earnings of subsidiaries		(28,504	)		(48,133	)		(30,825	)
	Depreciation		39			42			44
	Proceeds from sale of investment securities—trading		—			—			743
	Purchase of investment securities—trading		(1,707	)		(1,174	)		(1,182	)
	Unreliazed gain on investment securities—trading		(68	)		(158	)		(144	)
	Impairment of goodwill and other intangible assets		—			—			—
	Increase (decrease) in other assets and liabilities		7,782			1,430			(3,670	)
	Net cash provided by (used in) operating activities		3,050			(2,696	)		(7,036	)
	Cash flows from investing activities:
	Net cash used in investing activities		—			—			—
	Cash flows from financing activities:
	Dividends on common stock		(6,964	)		(5,892	)		(3,474	)
	Stock options exercised		1,084			9,090			2,627
	Net cash provided by (used in) financing activities		(5,880	)		3,198			(847	)
	Net increase (decrease) in cash and cash equivalents		(2,830	)		502			(7,883	)
	Cash and cash equivalents at beginning of year		7,141			6,639			14,522
	Cash and cash equivalents at end of year	$	4,311		$	7,141		$	6,639

Other_Operating_Expenses_Table

Other Operating Expenses (Tables)	12 Months Ended
	Dec. 31, 2013
Other Operating Expenses	'
Schedule of the composition of other operating expenses	'
	(In thousands)	2013		2012		2011
	Stationary and supplies	$	1,808	$	1,693	$	1,183
	Other taxes		624		467		284
	Travel and entertainment		764		763		632
	Premises and equipment		4,164		3,524		2,669
	Business memberships		500		447		328
	Employment services		141		253		172
	Board of directors expenses		698		538		575
	Loan expense		589		454		463
	Miscellaneous		3,944		3,236		2,106
	Total other operating expense	$	13,232	$	11,375	$	8,412

Organization_Details

Organization (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Jan. 16, 2014	Mar. 08, 2014
	item	UFBC	TBB
		Subsequent event	Cardinal Bank
			Subsequent event
			item
Organization	'	'	'
Number of nonbank subsidiaries	1	'	'
Acquisition	'	'	'
Cash paid to UFBC shareholders in exchange for each share of UFBC common stock (in dollars per share)	'	$19.13	'
Number of shares paid to UFBC shareholders in exchange for each share of UFBC common stock	'	$1.15	'
Number of banking locations added	'	'	8

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Jan. 14, 2014
	item	Previously classified	Subsequent event
		item	item
Investment Securities	'	'	'
Number of pooled trust preferred securities classified as held-to-maturity securities	2	4	'
Number of pooled trust preferred securities exempt from the covered fund definition	'	'	2
Number of pooled trust preferred securities not exempt from the covered fund definition	'	'	2
Number of pooled trust preferred securities reclassified to available-for-sale securities	'	'	2
Other-than-temporary impairment recognized	$300,000	'	'

Summary_of_Significant_Account4

Summary of Significant Accounting Policies (Details 2) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
	item
Loans Receivable and Allowance for Loan Losses	'
Number of loan categories	5
Number of banks identified as custom peer group	20
Bank | Minimum	'
Loans receivable and allowance for loan losses	'
Value of total assets for identifying the custom peer group	500
Bank | Maximum	'
Loans receivable and allowance for loan losses	'
Value of total assets for identifying the custom peer group	5,000

Summary_of_Significant_Account5

Summary of Significant Accounting Policies (Details 3)	12 Months Ended
	Dec. 31, 2013
Special mention	'
Loans Receivable and Allowance for Loan Losses	'
Loss factor (as a percent)	5.00%
Substandard	'
Loans Receivable and Allowance for Loan Losses	'
Loss factor (as a percent)	15.00%
Doubtful	'
Loans Receivable and Allowance for Loan Losses	'
Loss factor (as a percent)	50.00%

Summary_of_Significant_Account6

Summary of Significant Accounting Policies (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item
Goodwill and Other Intangibles	'	'	'
Number of metrics based on which fair value of reporting unit is determined	3	'	'
Write-down of goodwill	$0	'	'
Impairment charges	0	0	0
Bank-Owned Life Insurance	'	'	'
Amount of insurance claim to insurance policy	0	'	'
Amount of death benefit payment received	'	6,574,000	'
Increase in non-interest income	'	2,400,000	'
Management Fee Income	'	'	'
Management Fee Per Loan	$700	'	'
Furniture and equipment | Minimum	'	'	'
Premises and Equipment	'	'	'
Useful life	'3 years	'	'
Furniture and equipment | Maximum	'	'	'
Premises and Equipment	'	'	'
Useful life	'25 years	'	'
Purchased computer software | Minimum	'	'	'
Premises and Equipment	'	'	'
Useful life	'1 year	'	'
Purchased computer software | Maximum	'	'	'
Premises and Equipment	'	'	'
Useful life	'3 years	'	'

Summary_of_Significant_Account7

Summary of Significant Accounting Policies (Details 5) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-based Compensation	'	'	'
Number of stock-based employee compensation plans	2	'	'
Stock options	'	'	'
Stock-based Compensation	'	'	'
Total compensation cost charged against income	$687,000	$228,000	$604,000
Total income tax benefit recognized in the income statement for share-based compensation arrangements	$287,000	$600,000	$361,000
Weighted average per share fair values	$5.83	$4.65	$4.84
Weighted average assumptions used in estimation of fair values of options	'	'	'
Estimated option life	'6 years 6 months	'6 years 6 months	'6 years 6 months
Risk free interest rate, low end of range (as a percent)	1.14%	0.97%	1.45%
Risk free interest rate, high end of range (as a percent)	2.21%	1.69%	2.81%
Expected volatility (as a percent)	39.50%	42.10%	44.70%
Expected dividend yield (as a percent)	1.23%	1.10%	1.02%
Term of the U.S. Treasury note on which the risk free interest rate is based	'7 years	'	'
Stock options | Director	'	'	'
Stock-based Compensation	'	'	'
Term	'10 years	'	'
Stock options | Employee	'	'	'
Stock-based Compensation	'	'	'
Term	'10 years	'	'
Vesting rights, annual increments beginning on the grant date (as a percent)	25.00%	'	'
Vesting rights, annual increments beginning after the first year of service (as a percent)	20.00%	'	'

Investment_Securities_and_Othe2

Investment Securities and Other Investments (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investment Securities Available-for-Sale	'	'	'
Gross Amortized cost	$341,674,000	$249,993,000	'
Gross Unrealized Gains	9,943,000	21,915,000	'
Gross Unrealized Losses	-2,298,000	-5,000	'
Fair Value	349,319,000	271,903,000	'
Investment Securities Held-to-Maturity	'	'	'
Gross Amortized cost	6,477,000	11,366,000	'
Gross Unrealized Gains	145,000	242,000	'
Gross Unrealized Losses	-1,095,000	-2,589,000	'
Fair Value	5,527,000	9,019,000	'
Available-for-Sale, Amortized cost	'	'	'
Within One Year	8,549,000	'	'
After 1 year but within 5 years	30,120,000	'	'
After 5 years but within 10 years	61,665,000	'	'
After 10 years	96,731,000	'	'
Mortgage-backed securities	144,609,000	'	'
Total	341,674,000	'	'
Available-for-Sale, Fair Value	'	'	'
Within One Year	8,690,000	'	'
After 1 year but within 5 years	31,672,000	'	'
After 5 years but within 10 years	64,876,000	'	'
After 10 years	96,252,000	'	'
Mortgage-backed securities	147,829,000	'	'
Fair Value	349,319,000	271,903,000	'
Held-to-Maturity, Amortized cost	'	'	'
After 10 years	4,005,000	'	'
Mortgage-backed securities	2,472,000	'	'
Total	6,477,000	11,366,000	'
Held-to-Maturity, Fair Value	'	'	'
After 10 years	2,910,000	'	'
Mortgage-backed securities	2,617,000	'	'
Fair Value	5,527,000	9,019,000	'
Proceeds from sales of investment securities available-for-sale	0	0	40,400,000
Gross realized gains on sale of investment securities available-for-sale	'	'	2,397,000
Gross realized losses on sale of investment securities available-for-sale	0	0	0
U.S. government-sponsored agencies	'	'	'
Investment Securities Available-for-Sale	'	'	'
Gross Amortized cost	75,562,000	55,756,000	'
Gross Unrealized Gains	2,914,000	5,777,000	'
Gross Unrealized Losses	-1,548,000	'	'
Fair Value	76,928,000	61,533,000	'
Available-for-Sale, Fair Value	'	'	'
Fair Value	76,928,000	61,533,000	'
Mortgage-backed securities	'	'	'
Investment Securities Available-for-Sale	'	'	'
Gross Amortized cost	144,609,000	110,214,000	'
Gross Unrealized Gains	3,566,000	8,704,000	'
Gross Unrealized Losses	-346,000	-5,000	'
Fair Value	147,829,000	118,913,000	'
Investment Securities Held-to-Maturity	'	'	'
Gross Amortized cost	2,472,000	3,705,000	'
Gross Unrealized Gains	145,000	242,000	'
Fair Value	2,617,000	3,947,000	'
Available-for-Sale, Fair Value	'	'	'
Fair Value	147,829,000	118,913,000	'
Held-to-Maturity, Fair Value	'	'	'
Fair Value	2,617,000	3,947,000	'
Municipal securities	'	'	'
Investment Securities Available-for-Sale	'	'	'
Gross Amortized cost	113,716,000	79,055,000	'
Gross Unrealized Gains	3,426,000	7,292,000	'
Gross Unrealized Losses	-404,000	'	'
Fair Value	116,738,000	86,347,000	'
Available-for-Sale, Fair Value	'	'	'
Fair Value	116,738,000	86,347,000	'
U.S. treasury securities	'	'	'
Investment Securities Available-for-Sale	'	'	'
Gross Amortized cost	4,992,000	4,968,000	'
Gross Unrealized Gains	37,000	142,000	'
Fair Value	5,029,000	5,110,000	'
Available-for-Sale, Fair Value	'	'	'
Fair Value	5,029,000	5,110,000	'
Pooled trust preferred securities	'	'	'
Investment Securities Available-for-Sale	'	'	'
Gross Amortized cost	2,795,000	'	'
Fair Value	2,795,000	'	'
Investment Securities Held-to-Maturity	'	'	'
Gross Amortized cost	4,005,000	7,661,000	'
Gross Unrealized Losses	-1,095,000	-2,589,000	'
Fair Value	2,910,000	5,072,000	'
Available-for-Sale, Fair Value	'	'	'
Fair Value	2,795,000	'	'
Held-to-Maturity, Fair Value	'	'	'
Fair Value	$2,910,000	$5,072,000	'

Investment_Securities_and_Othe3

Investment Securities and Other Investments (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investment Securities Available-for-Sale, Total temporary impaired securities	'	'
Less than 12 months, Fair Value	$115,569	'
Less than 12 months, Unrealized loss	-2,287	'
12 months or more, Fair Value	318	362
12 months or more, Unrealized loss	-11	-5
Total Fair Value	115,887	362
Total Unrealized loss	-2,298	-5
Investment Securities Held-to-Maturity, Total temporary impaired securities	'	'
12 months or more, Fair Value	2,910	5,072
12 months or more, Unrealized loss	-1,095	-2,589
Total Fair Value	2,910	5,072
Total Unrealized loss	-1,095	-2,589
U.S. government-sponsored agencies	'	'
Investment Securities Available-for-Sale, Total temporary impaired securities	'	'
Less than 12 months, Fair Value	38,554	'
Less than 12 months, Unrealized loss	-1,548	'
Total Fair Value	38,554	'
Total Unrealized loss	-1,548	'
Mortgage-backed securities	'	'
Investment Securities Available-for-Sale, Total temporary impaired securities	'	'
Less than 12 months, Fair Value	46,563	'
Less than 12 months, Unrealized loss	-335	'
12 months or more, Fair Value	318	362
12 months or more, Unrealized loss	-11	-5
Total Fair Value	46,881	362
Total Unrealized loss	-346	-5
Municipal securities	'	'
Investment Securities Available-for-Sale, Total temporary impaired securities	'	'
Less than 12 months, Fair Value	30,452	'
Less than 12 months, Unrealized loss	-404	'
Total Fair Value	30,452	'
Total Unrealized loss	-404	'
Pooled trust preferred securities	'	'
Investment Securities Held-to-Maturity, Total temporary impaired securities	'	'
12 months or more, Fair Value	2,910	5,072
12 months or more, Unrealized loss	-1,095	-2,589
Total Fair Value	2,910	5,072
Total Unrealized loss	($1,095)	($2,589)

Investment_Securities_and_Othe4

Investment Securities and Other Investments (Details 3) (USD $)	12 Months Ended					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Jan. 14, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
	item			Previously classified	Subsequent event	Minimum	A-	Non-government non-agency mortgage-related securities	First pooled trust preferred securities	Other pooled trust preferred securities
				item	item	item	item
Investment Securities and Other Investments	'	'	'	'	'	'	'	'	'	'
Percentage of the company's mortgage-related securities guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and the Government National Mortgage Association	98.00%	'	'	'	'	'	'	'	'	'
Investment	$6,477,000	$11,366,000	'	'	'	'	'	$2,400,000	'	'
Number of pooled trust preferred securities	2	'	'	'	'	'	1	'	'	'
Number of pooled trust preferred securities classified as held-to-maturity securities	2	'	'	4	'	'	'	'	'	'
Number of pooled trust preferred securities exempt from the covered fund definition	'	'	'	'	2	'	'	'	'	'
Number of pooled trust preferred securities not exempt from the covered fund definition	'	'	'	'	2	'	'	'	'	'
Number of pooled trust preferred securities reclassified to available-for-sale securities	'	'	'	'	2	'	'	'	'	'
Par value of investments reclassified to the available-for-sale investment securities	3,100,000	'	'	'	'	'	'	'	'	'
Carrying value of pooled trust securities reclassified to the available-for-sale investment securities	2,800,000	'	'	'	'	'	'	'	'	'
Other-than-temporary impairment recognized	300,000	'	'	'	'	'	'	'	'	'
Par value of investments classified as held-to-maturity	4,000,000	'	'	'	'	'	'	'	'	'
Number of rating agencies that rate each bond	'	'	'	'	'	1	'	'	'	'
Percentage of principal balance subordinate to the entity's class of ownership	'	'	'	'	'	'	'	'	60.00%	56.00%
Amount of performing collateral defaulted or deferred payment which is expected to result in the occurrence of a break in contractual cash flow	'	'	'	'	'	'	'	'	169,000,000	155,000,000
Remaining performing collateral	'	'	'	'	'	'	'	'	233,000,000	243,000,000
Percentage of the performing collateral defaulted or deferred payment which is expected to result in the occurrence of a break in contractual cash flow	'	'	'	'	'	'	'	'	73.00%	64.00%
Other-than-temporary impairment recognized on remaining securities	$0	$0	$0	'	'	'	'	'	'	'

Investment_Securities_and_Othe5

Investment Securities and Other Investments (Details 4) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Investment Securities and Other Investments	'	'
Carrying value of investment securities pledged to secure borrowed funds and other balances	$188,100,000	$235,900,000
Federal Home Loan Bank stock	17,800,000	13,600,000
Community Bankers' Bank stock	63,000	63,000
Low income housing fund investments	524,000	2,000
Local bank holding company	'	'
Investment Securities and Other Investments	'	'
Equity investment in local holding company	50,000	50,000
Cardinal Statutory Trust I	'	'
Investment Securities and Other Investments	'	'
Investment in cardinal Statutory Trust I	619,000	619,000
Carrying Value	'	'
Investment Securities and Other Investments	'	'
FHLB advances	6,510,000	8,497,000
Customer repurchase agreements	119,883,000	164,258,000
Debtor in possession, public deposits, trust services division deposits and interest rate swap	61,695,000	63,180,000
Total	188,088,000	235,935,000
Market Value	'	'
Investment Securities and Other Investments	'	'
FHLB advances	7,225,000	9,731,000
Customer repurchase agreements	125,703,000	177,708,000
Debtor in possession, public deposits, trust services division deposits and interest rate swap	64,144,000	68,699,000
Total	$197,072,000	$256,138,000

Investment_Securities_Trading_1

Investment Securities - Trading (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investment Securities - Trading	'	'	'
Investment securities - trading	$3,890	$3,151	'
Net realized gain	68	158	144
Cash equivalents	'	'	'
Investment Securities - Trading	'	'	'
Investment securities - trading	506	464	'
Equities	'	'	'
Investment Securities - Trading	'	'	'
Investment securities - trading	'	419	'
Mutual funds	'	'	'
Investment Securities - Trading	'	'	'
Investment securities - trading	$3,384	$2,268	'

Loans_Receivable_and_Allowance2

Loans Receivable and Allowance for Loan Losses (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Loans receivable and allowance for loan losses	'	'	'
Loans receivable, gross	$2,043,922,000	$1,806,124,000	'
Net deferred fees	-3,754,000	-2,695,000	'
Loans receivable, net of fees	2,040,168,000	1,803,429,000	'
Allowance for loan losses	-27,864,000	-27,400,000	-26,159,000
Loans receivable, net	2,012,304,000	1,776,029,000	'
Loans serve as collateral foe Federal Home Loan Bank Advance capacity	1,100,000,000	'	'
Loans serve as collateral for Federal Reserve discount window Advance capacity	109,800,000	'	'
Credit extended to any single borrower or group of related borrowers	51,500,000	'	'
Loans in process	0	573,000	'
Allowance for loan losses	'	'	'
Balance at the beginning of the period	27,400,000	26,159,000	24,210,000
Provision for loan losses	-32,000	7,123,000	6,910,000
Charge offs	-231,000	-6,919,000	-5,654,000
Recoveries	727,000	1,037,000	693,000
Balance at the end of the period	27,864,000	27,400,000	26,159,000
Ending Balance, Collectively evaluated for impairment	27,864,000	27,400,000	'
Loans Receivable	'	'	'
Ending Balance	2,043,922,000	1,806,124,000	'
Ending Balance, Individually evaluated for impairment	3,378,000	8,446,000	'
Ending Balance, Collectively evaluated for impairment	2,040,544,000	1,797,678,000	'
Commercial and industrial	'	'	'
Loans receivable and allowance for loan losses	'	'	'
Loans receivable, gross	219,156,000	222,961,000	'
Allowance for loan losses	-3,329,000	-525,000	'
Allowance for loan losses	'	'	'
Balance at the beginning of the period	525,000	3,390,000	'
Provision for loan losses	2,535,000	-1,695,000	'
Charge offs	-42,000	-1,194,000	'
Recoveries	311,000	24,000	'
Balance at the end of the period	3,329,000	525,000	'
Ending Balance, Collectively evaluated for impairment	3,329,000	525,000	'
Loans Receivable	'	'	'
Ending Balance	219,156,000	222,961,000	'
Ending Balance, Individually evaluated for impairment	814,000	2,064,000	'
Ending Balance, Collectively evaluated for impairment	218,342,000	220,897,000	'
Real estate - commercial	'	'	'
Loans receivable and allowance for loan losses	'	'	'
Loans receivable, gross	1,048,579,000	827,243,000	'
Allowance for loan losses	-16,076,000	-17,990,000	'
Loan-to-value ratios for real estate commercial loans, maximum (as a percent)	80.00%	'	'
Allowance for loan losses	'	'	'
Balance at the beginning of the period	17,990,000	13,377,000	'
Provision for loan losses	-2,203,000	9,467,000	'
Charge offs	'	-4,959,000	'
Recoveries	289,000	105,000	'
Balance at the end of the period	16,076,000	17,990,000	'
Ending Balance, Collectively evaluated for impairment	16,076,000	17,990,000	'
Loans Receivable	'	'	'
Ending Balance	1,048,579,000	827,243,000	'
Ending Balance, Individually evaluated for impairment	1,738,000	1,657,000	'
Ending Balance, Collectively evaluated for impairment	1,046,841,000	825,586,000	'
Real estate - construction	'	'	'
Loans receivable and allowance for loan losses	'	'	'
Loans receivable, gross	363,063,000	373,717,000	'
Allowance for loan losses	-5,336,000	-7,675,000	'
Loan-to-value ratios for real estate commercial loans, maximum (as a percent)	80.00%	'	'
Allowance for loan losses	'	'	'
Balance at the beginning of the period	7,675,000	6,495,000	'
Provision for loan losses	-2,360,000	553,000	'
Recoveries	21,000	627,000	'
Balance at the end of the period	5,336,000	7,675,000	'
Ending Balance, Collectively evaluated for impairment	5,336,000	7,675,000	'
Loans Receivable	'	'	'
Ending Balance	363,063,000	373,717,000	'
Ending Balance, Individually evaluated for impairment	775,000	4,725,000	'
Ending Balance, Collectively evaluated for impairment	362,288,000	368,992,000	'
Real estate - residential	'	'	'
Loans receivable and allowance for loan losses	'	'	'
Loans receivable, gross	299,484,000	260,352,000	'
Allowance for loan losses	-2,421,000	-857,000	'
Loan-to-value ratios for real estate commercial loans, maximum (as a percent)	80.00%	'	'
Allowance for loan losses	'	'	'
Balance at the beginning of the period	857,000	1,709,000	'
Provision for loan losses	1,645,000	-802,000	'
Charge offs	-185,000	-291,000	'
Recoveries	104,000	241,000	'
Balance at the end of the period	2,421,000	857,000	'
Ending Balance, Collectively evaluated for impairment	2,421,000	857,000	'
Loans Receivable	'	'	'
Ending Balance	299,484,000	260,352,000	'
Ending Balance, Collectively evaluated for impairment	299,484,000	260,352,000	'
Home Equity Lines	'	'	'
Loans receivable and allowance for loan losses	'	'	'
Loans receivable, gross	109,481,000	117,647,000	'
Allowance for loan losses	-609,000	-266,000	'
Loan-to-value ratios for real estate commercial loans, maximum (as a percent)	90.00%	'	'
Allowance for loan losses	'	'	'
Balance at the beginning of the period	266,000	1,119,000	'
Provision for loan losses	343,000	-429,000	'
Charge offs	'	-460,000	'
Recoveries	'	36,000	'
Balance at the end of the period	609,000	266,000	'
Ending Balance, Collectively evaluated for impairment	609,000	266,000	'
Loans Receivable	'	'	'
Ending Balance	109,481,000	117,647,000	'
Ending Balance, Individually evaluated for impairment	51,000	'	'
Ending Balance, Collectively evaluated for impairment	109,430,000	117,647,000	'
Consumer	'	'	'
Loans receivable and allowance for loan losses	'	'	'
Loans receivable, gross	4,159,000	4,204,000	'
Allowance for loan losses	-93,000	-87,000	'
Allowance for loan losses	'	'	'
Balance at the beginning of the period	87,000	69,000	'
Provision for loan losses	8,000	29,000	'
Charge offs	-4,000	-15,000	'
Recoveries	2,000	4,000	'
Balance at the end of the period	93,000	87,000	'
Ending Balance, Collectively evaluated for impairment	93,000	87,000	'
Loans Receivable	'	'	'
Ending Balance	4,159,000	4,204,000	'
Ending Balance, Collectively evaluated for impairment	$4,159,000	$4,204,000	'

Loans_Receivable_and_Allowance3

Loans Receivable and Allowance for Loan Losses (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Nonaccrual and Past Due Loans	'	'	'
30-59 Days Past Due	$191,000	'	'
60-89 Days Past Due	316,000	'	'
90 Days or More Past Due (includes nonaccrual)	2,314,000	7,626,000	'
Total Past Due	2,821,000	7,626,000	'
Current	2,041,101,000	1,798,498,000	'
Total Loans	2,043,922,000	1,806,124,000	'
Nonaccrual Loans	2,314,000	7,626,000	14,600,000
Valuation allowance for impaired loans	0	0	'
Charge offs related to impaired loans	0	4,800,000	5,100,000
Average balance of impaired loans	4,200,000	11,300,000	10,300,000
Interest income that would have been recorded had loans been performing	626,000	491,000	766,000
Interest income realized on loans placed on nonaccrual status	5,000	111,000	341,000
Commercial and industrial	'	'	'
Nonaccrual and Past Due Loans	'	'	'
30-59 Days Past Due	101,000	'	'
60-89 Days Past Due	316,000	'	'
90 Days or More Past Due (includes nonaccrual)	'	2,064,000	'
Total Past Due	417,000	2,064,000	'
Current	218,739,000	220,897,000	'
Total Loans	219,156,000	222,961,000	'
Nonaccrual Loans	'	2,064,000	'
Owner occupied	'	'	'
Nonaccrual and Past Due Loans	'	'	'
Current	279,631,000	255,343,000	'
Total Loans	279,631,000	255,343,000	'
Non-owner occupied	'	'	'
Nonaccrual and Past Due Loans	'	'	'
30-59 Days Past Due	82,000	'	'
90 Days or More Past Due (includes nonaccrual)	1,738,000	3,800,000	'
Total Past Due	1,820,000	3,800,000	'
Current	767,128,000	568,100,000	'
Total Loans	768,948,000	571,900,000	'
Nonaccrual Loans	1,738,000	3,800,000	'
Residential	'	'	'
Nonaccrual and Past Due Loans	'	'	'
Current	120,144,000	84,551,000	'
Total Loans	120,144,000	84,551,000	'
Commercial	'	'	'
Nonaccrual and Past Due Loans	'	'	'
90 Days or More Past Due (includes nonaccrual)	525,000	1,762,000	'
Total Past Due	525,000	1,762,000	'
Current	242,394,000	287,404,000	'
Total Loans	242,919,000	289,166,000	'
Nonaccrual Loans	525,000	1,762,000	'
Single family	'	'	'
Nonaccrual and Past Due Loans	'	'	'
30-59 Days Past Due	8,000	'	'
Total Past Due	8,000	'	'
Current	213,537,000	209,740,000	'
Total Loans	213,545,000	209,740,000	'
Multi-family	'	'	'
Nonaccrual and Past Due Loans	'	'	'
Current	85,939,000	50,612,000	'
Total Loans	85,939,000	50,612,000	'
Home Equity Lines	'	'	'
Nonaccrual and Past Due Loans	'	'	'
90 Days or More Past Due (includes nonaccrual)	51,000	'	'
Total Past Due	51,000	'	'
Current	109,430,000	117,647,000	'
Total Loans	109,481,000	117,647,000	'
Nonaccrual Loans	51,000	'	'
Installment	'	'	'
Nonaccrual and Past Due Loans	'	'	'
Current	3,912,000	3,916,000	'
Total Loans	3,912,000	3,916,000	'
Credit cards	'	'	'
Nonaccrual and Past Due Loans	'	'	'
Current	247,000	288,000	'
Total Loans	$247,000	$288,000	'

Loans_Receivable_and_Allowance4

Loans Receivable and Allowance for Loan Losses (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Recorded Investment	'	'
Total	$3,378	$8,446
Unpaid Principal Balance	'	'
Total	7,665	15,377
Interest Income Recognized	'	'
Total	23	773
Commercial and industrial	'	'
Recorded Investment	'	'
With no related allowance	814	2,064
Total	814	2,064
Unpaid Principal Balance	'	'
With no related allowance	814	2,985
Total	814	2,985
Interest Income Recognized	'	'
With no related allowance	23	269
Total	23	269
Real estate - commercial	'	'
Recorded Investment	'	'
Total	1,738	4,370
Unpaid Principal Balance	'	'
Total	3,872	6,943
Interest Income Recognized	'	'
Total	'	35
Non-owner occupied	'	'
Recorded Investment	'	'
With no related allowance	1,738	4,370
Unpaid Principal Balance	'	'
With no related allowance	3,872	6,943
Interest Income Recognized	'	'
With no related allowance	'	35
Real estate - construction	'	'
Recorded Investment	'	'
Total	775	2,012
Unpaid Principal Balance	'	'
Total	2,928	5,449
Interest Income Recognized	'	'
Total	'	469
Commercial	'	'
Recorded Investment	'	'
With no related allowance	775	2,012
Unpaid Principal Balance	'	'
With no related allowance	2,928	5,449
Interest Income Recognized	'	'
With no related allowance	'	469
Home Equity Lines	'	'
Recorded Investment	'	'
With no related allowance	51	'
Total	51	'
Unpaid Principal Balance	'	'
With no related allowance	51	'
Total	$51	'

Loans_Receivable_and_Allowance5

Loans Receivable and Allowance for Loan Losses (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
	item	item
Reconciliation of beginning and ending balances on TDR	'	'
Beginning Balance	$7,338,000	$15,345,000
New TDRs	570,000	'
Charge-Offs Post Modification	'	-4,817,000
Sales, paydowns, or other decreases	-5,645,000	-3,190,000
Ending Balance	2,263,000	7,338,000
Number of relationships with the Bank made by the TDRs	1	3
Restructured loans, loan loss reserves	0	0
Outstanding commitments to advance additional funds	0	0
Troubled Debt Restructurings with Payment Default In The Previous Twelve Months	'	'
Number of Loans	1	0
Commercial and industrial	'	'
Reconciliation of beginning and ending balances on TDR	'	'
Beginning Balance	1,776,000	3,497,000
Charge-Offs Post Modification	'	-1,068,000
Sales, paydowns, or other decreases	-1,776,000	-653,000
Ending Balance	'	1,776,000
Real estate - commercial	'	'
Reconciliation of beginning and ending balances on TDR	'	'
Beginning Balance	3,800,000	9,098,000
New TDRs	570,000	'
Charge-Offs Post Modification	'	-3,749,000
Sales, paydowns, or other decreases	-2,632,000	-1,549,000
Ending Balance	1,738,000	3,800,000
Real estate - construction	'	'
Reconciliation of beginning and ending balances on TDR	'	'
Beginning Balance	1,762,000	2,750,000
Sales, paydowns, or other decreases	-1,237,000	-988,000
Ending Balance	$525,000	$1,762,000

Loans_Receivable_and_Allowance6

Loans Receivable and Allowance for Loan Losses (Details 5) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Internal Risk Rating Grades	'	'
Loans receivable, gross	$2,043,922,000	$1,806,124,000
Allowance for impaired loans	0	0
Loans receivable, net of related allowance	3,400,000	8,400,000
Commercial and industrial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	219,156,000	222,961,000
Real estate - commercial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	1,048,579,000	827,243,000
Owner occupied	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	279,631,000	255,343,000
Non-owner occupied	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	768,948,000	571,900,000
Real estate - construction	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	363,063,000	373,717,000
Residential	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	120,144,000	84,551,000
Commercial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	242,919,000	289,166,000
Real estate - residential	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	299,484,000	260,352,000
Single family	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	213,545,000	209,740,000
Multi-family	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	85,939,000	50,612,000
Home Equity Lines	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	109,481,000	117,647,000
Consumer	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	4,159,000	4,204,000
Installment	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	3,912,000	3,916,000
Credit cards	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	247,000	288,000
Pass	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	2,026,611,000	1,766,509,000
Pass | Commercial and industrial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	217,755,000	220,266,000
Pass | Owner occupied	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	279,631,000	255,343,000
Pass | Non-owner occupied	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	753,872,000	542,983,000
Pass | Residential	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	120,144,000	84,551,000
Pass | Commercial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	242,144,000	281,163,000
Pass | Single family	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	213,537,000	209,740,000
Pass | Multi-family	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	85,939,000	50,612,000
Pass | Home Equity Lines	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	109,430,000	117,647,000
Pass | Installment	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	3,912,000	3,916,000
Pass | Credit cards	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	247,000	288,000
OLEM	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	13,933,000	31,169,000
OLEM | Commercial and industrial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	587,000	631,000
OLEM | Non-owner occupied	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	13,338,000	27,260,000
OLEM | Commercial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	'	3,278,000
OLEM | Single family	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	8,000	'
Substandard	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	3,378,000	8,446,000
Substandard | Commercial and industrial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	814,000	2,064,000
Substandard | Non-owner occupied	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	1,738,000	1,657,000
Substandard | Commercial	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	775,000	4,725,000
Substandard | Home Equity Lines	'	'
Internal Risk Rating Grades	'	'
Loans receivable, gross	$51,000	'

Other_Real_Estate_Owned_Detail

Other Real Estate Owned (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Real Estate Owned	'	'	'
Other real estate owned	$0	$0	'
Impairment charges	'	'	911
Gain (loss) on sales of other real estate owned	$30	($333)	'

Loans_Held_for_Sale_Details

Loans Held for Sale (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Loans Held for Sale	'	'
Loans held for sale, gross	$371,661	$773,372
Net deferred costs	2,332	12,379
Loans held for sale, net	373,993	785,751
Residential	'	'
Loans Held for Sale	'	'
Loans held for sale, gross	311,493	728,973
Construction-to-permanent	'	'
Loans Held for Sale	'	'
Loans held for sale, gross	$60,168	$44,399

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Other Intangible Assets	'	'	'
Write down of goodwill	$0	'	'
Gross Carrying Amount	'	'	'
Balance at the beginning of the period	2,397	2,397	'
Balance at the end of the period	2,397	2,397	2,397
Accumulated Amortization	'	'	'
Balance at the beginning of the period	2,249	2,051	'
Aggregate amortization expense	148	198	198
Balance at the end of the period	2,397	2,249	2,051
Additional amortization expense	0	0	0
Mortgage Banking	'	'	'
Gross Carrying Amount	'	'	'
Balance at the end of the period	1,781	1,781	1,781
Accumulated Amortization	'	'	'
Balance at the end of the period	1,781	1,633	1,435
Wealth Management Services	'	'	'
Gross Carrying Amount	'	'	'
Balance at the end of the period	616	616	616
Accumulated Amortization	'	'	'
Balance at the end of the period	616	616	616
Customer relationship intangibles | Mortgage Banking	'	'	'
Accumulated Amortization	'	'	'
Aggregate amortization expense	$148	$198	'

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Goodwill	'	'
Balance at the beginning of the period	$10,144	$10,144
Balance at the end of the period	10,144	10,144
Commercial Banking	'	'
Goodwill	'	'
Balance at the beginning of the period	24	24
Balance at the end of the period	24	24
Mortgage Banking	'	'
Goodwill	'	'
Balance at the beginning of the period	10,120	10,120
Balance at the end of the period	$10,120	$10,120

Premises_and_Equipment_Details

Premises and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Premises and Equipment	'	'	'
Total cost	$47,315,000	$42,745,000	'
Less accumulated depreciation and amortization	-26,926,000	-23,553,000	'
Premises and equipment, net	20,389,000	19,192,000	'
Depreciation	3,196,000	2,669,000	2,517,000
Minimum future rental payments under the noncancelable operating leases	'	'	'
2014	8,408,000	'	'
2015	6,933,000	'	'
2016	5,372,000	'	'
2017	3,830,000	'	'
2018	3,437,000	'	'
Thereafter	8,900,000	'	'
Total	36,880,000	'	'
Total rent expense	7,900,000	6,600,000	5,500,000
Future minimum lease payments under noncancelable subleasing arrangements	'	'	'
2014	47,000	'	'
2015	49,000	'	'
2016	50,000	'	'
2017	52,000	'	'
2018	31,000	'	'
Total	229,000	'	'
Total rent income	158,000	166,000	187,000
Land	'	'	'
Premises and Equipment	'	'	'
Total cost	4,350,000	4,350,000	'
Buildings	'	'	'
Premises and Equipment	'	'	'
Total cost	6,680,000	6,680,000	'
Furniture and equipment	'	'	'
Premises and Equipment	'	'	'
Total cost	25,478,000	22,509,000	'
Leasehold improvements	'	'	'
Premises and Equipment	'	'	'
Total cost	$10,807,000	$9,206,000	'

Deposits_Details

Deposits (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deposits	'	'	'
Non-interest bearing demand deposits	$433,749,000	$351,815,000	'
Interest bearing deposits:	'	'	'
Interest checking	398,136,000	347,697,000	'
Money market and statement savings	475,707,000	430,391,000	'
Certificates of deposit	751,267,000	1,113,855,000	'
Total interest-bearing deposits	1,625,110,000	1,891,943,000	'
Total deposits	2,058,859,000	2,243,758,000	'
Interest expense by deposit categories	'	'	'
Interest checking	2,170,000	2,457,000	255,000
Money market and statement savings	1,389,000	1,689,000	1,534,000
Certificates of deposit	9,457,000	10,693,000	11,771,000
Total interest expense	13,016,000	14,839,000	13,560,000
Certificates of deposit	'	'	'
Certificates of deposit with a minimum denomination	'	'	'
Three months or less	123,886,000	'	'
Over three months through six months	45,921,000	'	'
Over six months through twelve months	49,014,000	'	'
Over twelve months	131,156,000	'	'
Total	349,977,000	565,100,000	'
Brokered certificates of deposits	301,200,000	616,600,000	'
Maturities of certificates of deposit	'	'	'
2014	428,637,000	'	'
2015	157,204,000	'	'
2016	97,926,000	'	'
2017	45,997,000	'	'
2018	18,437,000	'	'
2019	3,066,000	'	'
Total	751,267,000	'	'
Certificates of deposit | Fixed Term	'	'	'
Certificates of deposit with a minimum denomination	'	'	'
Three months or less	116,690,000	'	'
Over three months through six months	43,466,000	'	'
Over six months through twelve months	46,909,000	'	'
Over twelve months	90,186,000	'	'
Total	297,251,000	'	'
Certificates of deposit | No-Penalty	'	'	'
Certificates of deposit with a minimum denomination	'	'	'
Three months or less	7,196,000	'	'
Over three months through six months	2,455,000	'	'
Over six months through twelve months	2,105,000	'	'
Over twelve months	40,970,000	'	'
Total	$52,726,000	'	'

Other_Borrowed_Funds_Details

Other Borrowed Funds (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Borrowed Funds	'	'
Other borrowed funds	$475,232	$392,275
Interest rate, low end of range (as a percent)	0.17%	'
Interest rate, high end of range (as a percent)	4.85%	'
Fixed rate FHLB advances	'	'
Other Borrowed Funds	'	'
Other borrowed funds	315,000	215,000
Federal funds purchased	'	'
Other Borrowed Funds	'	'
Other borrowed funds	45,000	50,000
Customer repurchase agreements	'	'
Other Borrowed Funds	'	'
Other borrowed funds	94,613	106,656
Payable to Statutory Trust I	'	'
Other Borrowed Funds	'	'
Other borrowed funds	$20,619	$20,619

Other_Borrowed_Funds_Details_2

Other Borrowed Funds (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jul. 31, 2004
Other Borrowed Funds	'	'	'	'
Balance	$475,232,000	$392,275,000	'	'
Interest expense	21,770,000	24,047,000	23,716,000	'
Cardinal Statutory Trust I	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest expense	693,000	834,000	816,000	'
Trust preferred securities issued	'	'	'	20,000,000
Variable interest rate base	'LIBOR	'	'	'
Interest rate added to base rate (as a percent)	2.40%	'	'	'
Interest rate at period end (as a percent)	2.64%	'	'	'
Fixed rate FHLB advances	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	3.09%	3.61%	'	'
Balance	315,000,000	215,000,000	'	'
Average balances of advances	217,300,000	230,500,000	'	'
Maximum amount outstanding at any month-end	315,000,000	295,000,000	'	'
Interest expense	7,900,000	8,200,000	9,600,000	'
Extinguishment of debt	'	'	55,000,000	'
Average cost of debt extinguished (as a percent)	'	'	2.87%	'
Average cost of debt extinguished	'	'	1,600,000	'
Payment of prepayment penalty	0	0	2,300,000	'
Federal Home Loan Bank advance at 0.17% interest, due 2014	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	0.17%	'	'	'
Advance Term	'1 month	'	'	'
Balance	100,000,000	'	'	'
Federal Home Loan Bank advance at 3.37% to 3.50% interest, due 2015	'	'	'	'
Other Borrowed Funds	'	'	'	'
Advance Term	'48 months	'48 months	'	'
Balance	10,000,000	10,000,000	'	'
Federal Home Loan Bank advance at 3.37% to 3.50% interest, due 2015 | Minimum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	3.37%	3.37%	'	'
Federal Home Loan Bank advance at 3.37% to 3.50% interest, due 2015 | Maximum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	3.50%	3.50%	'	'
Federal Home Loan Bank advance at 2.03% interest, due 2016	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	2.03%	2.03%	'	'
Advance Term	'48 months	'48 months	'	'
Balance	10,000,000	10,000,000	'	'
Federal Home Loan Bank advance at 3.45% interest, due 2016	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	3.45%	3.45%	'	'
Advance Term	'60 months	'60 months	'	'
Balance	5,000,000	5,000,000	'	'
Federal Home Loan Bank advance at 3.93% to 4.55% interest, due 2016	'	'	'	'
Other Borrowed Funds	'	'	'	'
Advance Term	'120 months	'120 months	'	'
Balance	50,000,000	50,000,000	'	'
Federal Home Loan Bank advance at 3.93% to 4.55% interest, due 2016 | Minimum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	3.93%	3.93%	'	'
Federal Home Loan Bank advance at 3.93% to 4.55% interest, due 2016 | Maximum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	4.55%	4.55%	'	'
Federal Home Loan Bank advance at 2.46% to 2.65% interest, due 2017	'	'	'	'
Other Borrowed Funds	'	'	'	'
Advance Term	'60 months	'60 months	'	'
Balance	30,000,000	30,000,000	'	'
Federal Home Loan Bank advance at 2.46% to 2.65% interest, due 2017 | Minimum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	2.46%	2.46%	'	'
Federal Home Loan Bank advance at 2.46% to 2.65% interest, due 2017 | Maximum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	2.65%	2.65%	'	'
Federal Home Loan Bank advance at 3.10% to 4.85% interest, due 2017	'	'	'	'
Other Borrowed Funds	'	'	'	'
Advance Term	'120 months	'120 months	'	'
Balance	60,000,000	60,000,000	'	'
Federal Home Loan Bank advance at 3.10% to 4.85% interest, due 2017 | Minimum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	3.10%	3.10%	'	'
Federal Home Loan Bank advance at 3.10% to 4.85% interest, due 2017 | Maximum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	4.85%	4.85%	'	'
Federal Home Loan Bank advance at 2.81% to 4.00% interest, due 2018	'	'	'	'
Other Borrowed Funds	'	'	'	'
Advance Term	'120 months	'120 months	'	'
Balance	20,000,000	20,000,000	'	'
Federal Home Loan Bank advance at 2.81% to 4.00% interest, due 2018 | Minimum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	2.81%	2.81%	'	'
Federal Home Loan Bank advance at 2.81% to 4.00% interest, due 2018 | Maximum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	4.00%	4.00%	'	'
Federal Home Loan Bank advance at 2.98% interest, due 2019	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	2.98%	2.98%	'	'
Advance Term	'84 months	'84 months	'	'
Balance	10,000,000	10,000,000	'	'
Federal Home Loan Bank advance at 3.80% to 4.01% interest, due 2022	'	'	'	'
Other Borrowed Funds	'	'	'	'
Advance Term	'120 months	'120 months	'	'
Balance	20,000,000	20,000,000	'	'
Federal Home Loan Bank advance at 3.80% to 4.01% interest, due 2022 | Minimum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	3.80%	3.80%	'	'
Federal Home Loan Bank advance at 3.80% to 4.01% interest, due 2022 | Maximum	'	'	'	'
Other Borrowed Funds	'	'	'	'
Interest Rate (as a percent)	4.01%	4.01%	'	'
Line of credit at the Federal Reserve discount window	'	'	'	'
Other Borrowed Funds	'	'	'	'
Maximum amount outstanding at any month-end	94,500,000	'	'	'
Amounts drawn	0	'	'	'
Interest expense	0	0	0	'
Payable to Statutory Trust I	'	'	'	'
Other Borrowed Funds	'	'	'	'
Balance	20,619,000	20,619,000	'	'
Payable to Statutory Trust I | Cardinal Statutory Trust I	'	'	'	'
Other Borrowed Funds	'	'	'	'
Balance	20,600,000	'	'	'
Additional amount payable for unfunded capital investment	619,000	'	'	'
Federal funds	'	'	'	'
Other Borrowed Funds	'	'	'	'
Balance	45,000,000	50,000,000	'	'
Interest expense	24,000	35,000	33,000	'
Weighted-average interest rate (as a percent)	0.43%	0.38%	'	'
Customer repurchase agreements	'	'	'	'
Other Borrowed Funds	'	'	'	'
Balance	94,613,000	106,656,000	'	'
Interest expense	165,000	249,000	210,000	'
Weighted-average interest rate (as a percent)	0.16%	0.21%	0.24%	'
Average balances	104,800,000	117,300,000	87,000,000	'
Maximum amount outstanding at any month-end	$148,100,000	$160,100,000	$106,700,000	'

Other_Borrowed_Funds_Details_3

Other Borrowed Funds (Details 3) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Maturities of other borrowed funds	'
2014	$239,613
2015	10,000
2016	65,000
2017	90,000
2018	20,000
2019 and Thereafter	50,619
FHLB advances	'
Maturities of other borrowed funds	'
2014	100,000
2015	10,000
2016	65,000
2017	90,000
2018	20,000
2019 and Thereafter	30,000
Customer repurchase agreements	'
Maturities of other borrowed funds	'
2014	94,613
Federal funds sold	'
Maturities of other borrowed funds	'
2014	45,000
Payable to Statutory Trust I	'
Maturities of other borrowed funds	'
2019 and Thereafter	$20,619

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes	'	'	'
Federal corporate rate (as a percent)	35.00%	'	'
Reconciliation of provision for income tax expense to the amount computed by applying the federal corporate tax rate to income before taxes	'	'	'
Income tax at federal corporate rate	$13,189	$23,784	$14,742
Change in valuation allowance	245	671	'
Change in the carrying rate of deferred tax assets and liabilities	'	'	1
State tax expense, net of federal tax benefit	77	226	263
Nontaxable income	-1,466	-2,152	-1,152
Nondeductible expenses	184	400	27
Other	-54	-271	241
Total	12,175	22,658	14,122
Current	'	'	'
Federal	14,432	16,355	12,675
State	609	486	361
Total current	15,041	16,841	13,036
Deferred	'	'	'
Federal	-2,799	5,695	1,057
State	-67	122	29
Total deferred	-2,866	5,817	1,086
Total	12,175	22,658	14,122
Included in shareholders' equity:	'	'	'
Deferred tax expense related to the change in the net unrealized gain on investment securities available for sale	-5,064	391	4,468
Deferred tax expense (benefit) related to the change in the net unrealized gain (loss) on derivative instruments designated as cash flow hedges	589	470	-572
Total included in shareholders' equity	-4,475	861	3,896
Deferred tax assets:	'	'	'
Allowance for loan losses	9,988	9,761	'
Net operating state loss carryforwards	2,490	2,258	'
Unrealized losses on derivative instruments designated as cash flow hedges	22	611	'
Deferred compensation	5,424	3,965	'
Other	991	1,999	'
Total gross deferred tax assets	18,915	18,594	'
Less valuation allowance	-2,490	-2,258	'
Net deferred tax assets	16,425	16,336	'
Deferred tax liabilities:	'	'	'
Unrealized gains on investment securities available-for-sale	-2,740	-7,805	'
Goodwill and intangibles, net	-601	-149	'
Fair value adjustments	-5,910	-8,751	'
Depreciation	-926	-865	'
Prepaid expenses	-190	-15	'
Loan origination costs	-663	-697	'
Total gross deferred tax liabilities	-11,030	-18,282	'
Net deferred tax asset (liability)	$5,395	($1,946)	'

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Operating loss carryforwards	'	'
Unrecognized tax benefits	$0	$0
Interest expense or tax penalties related to uncertain tax positions	0	0
State	'	'
Operating loss carryforwards	'	'
Net operating loss carryforwards	$41,500,000	'

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities (Details) (USD $)	12 Months Ended								12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013
			Forward loan sales commitments	Forward loan sales commitments	Residential mortgage rate lock commitments and associated forward sales	Residential mortgage rate lock commitments and associated forward sales	Derivatives in cash flow hedging relationships	Derivatives in cash flow hedging relationships	Derivatives in cash flow hedging relationships	Derivatives in fair value hedging relationships	Derivatives in fair value hedging relationships
							Forward loan sales commitments	Forward loan sales commitments	Interest rate swaps	Interest rate swaps	Interest rate swaps
											item
Derivative Instruments and Hedging Activities	'	'	'	'	'	'	'	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	'	'	'	'	'	'	$1,100,000	$785,000	'	'	'
Period from closing within which loans held for sale are generally sold	'60 days	'	'	'	'	'	'	'	'	'	'
Loans closed and presented as held for sale	373,993,000	785,751,000	'	'	'	'	'	'	'	'	'
Derivative assets	16,487,000	27,242,000	'	'	'	'	'	'	'	'	'
Derivative liabilities	5,606,000	4,779,000	'	'	'	'	'	'	'	'	'
Number of loans receivable hedged	'	'	'	'	'	'	'	'	'	'	1
Notional amount	'	'	293,200,000	723,800,000	210,900,000	481,700,000	'	'	10,000,000	11,174,000	'
Weighted average pay rate	'	'	'	'	'	'	'	'	3.97%	5.42%	'
Weighted average receive rate	'	'	'	'	'	'	'	'	1.54%	0.25%	'
Weighted average maturity in years	'	'	'	'	'	'	'	'	'1 year	'1 year	'
Unrealized gain (loss) relating to interest rate swaps (in dollars)	'	'	'	'	'	'	'	'	$119,000	$478,000	'
Variable rate basis	'	'	'	'	'	'	'	'	'three month LIBOR	'one month LIBOR	'

Fair_Value_of_Derivative_Instr2

Fair Value of Derivative Instruments and Hedging Activities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Derivative Instruments and Hedging Activities	'	'
Asset Derivatives, Fair Value	$16,487	$27,242
Liability Derivatives, Fair Value	5,606	4,779
Derivatives Designated as Hedging Instruments	'	'
Derivative Instruments and Hedging Activities	'	'
Asset Derivatives, Fair Value	5,489	2,136
Liability Derivatives, Fair Value	4,043	4,239
Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Accrued Interest Payable and Other Liabilities	'	'
Derivative Instruments and Hedging Activities	'	'
Liability Derivatives, Fair Value	'	616
Derivatives Designated as Hedging Instruments | Forward Loan Sales Commitments | Accrued Interest Receivable and Other Assets	'	'
Derivative Instruments and Hedging Activities	'	'
Asset Derivatives, Fair Value	5,489	2,136
Derivatives Designated as Hedging Instruments | Forward Loan Sales Commitments | Accrued Interest Payable and Other Liabilities	'	'
Derivative Instruments and Hedging Activities	'	'
Liability Derivatives, Fair Value	4,043	3,623
Derivatives Not Designated as Hedging Instruments	'	'
Derivative Instruments and Hedging Activities	'	'
Asset Derivatives, Fair Value	10,998	25,106
Liability Derivatives, Fair Value	1,563	540
Derivatives Not Designated as Hedging Instruments | Rate Lock and Forward Loan Sales Commitments | Accrued Interest Receivable and Other Assets	'	'
Derivative Instruments and Hedging Activities	'	'
Asset Derivatives, Fair Value	10,989	24,657
Derivatives Not Designated as Hedging Instruments | Rate Lock and Forward Loan Sales Commitments | Accrued Interest Payable and Other Liabilities	'	'
Derivative Instruments and Hedging Activities	'	'
Liability Derivatives, Fair Value	9	449
Derivatives Not Designated as Hedging Instruments | Rate Lock Commitments | Accrued Interest Receivable and Other Assets	'	'
Derivative Instruments and Hedging Activities	'	'
Asset Derivatives, Fair Value	9	449
Derivatives Not Designated as Hedging Instruments | Rate Lock Commitments | Accrued Interest Payable and Other Liabilities	'	'
Derivative Instruments and Hedging Activities	'	'
Liability Derivatives, Fair Value	$1,554	$91

Fair_Value_of_Derivative_Instr3

Fair Value of Derivative Instruments and Hedging Activities (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivatives Not Designated as Hedging Instruments	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	$59,566	$79,397
Forward Loan Sales Commitments | Derivatives Not Designated as Hedging Instruments | Other Income	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	6,421	-2,875
Rate Lock Commitments | Derivatives Not Designated as Hedging Instruments | Realized and unrealized gains on mortgage banking activities	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	59,566	79,397
Rate Lock Commitments | Derivatives Not Designated as Hedging Instruments | Other Income	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	-6,421	2,875
Derivatives in Fair Value Hedging Relationships	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	478	522
Amount of Gain (Loss) Recognized in Income on Hedged Item	-478	-522
Derivatives in Fair Value Hedging Relationships | Interest Rate Swaps | Other Income	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	478	522
Amount of Gain (Loss) Recognized in Income on Hedged Item	-478	-522
Derivatives in Cash Flow Hedging Relationships	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	1,109	785
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion)	3,774	-756
Derivatives in Cash Flow Hedging Relationships | Interest Rate Swaps | Other Income	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	89	119
Derivatives in Cash Flow Hedging Relationships | Forward Loan Sales Commitments | Other Income	'	'
Impact of Derivative Instruments on the Statement of Income	'	'
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	1,020	666
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion)	$3,774	($756)

Regulatory_Matters_Details

Regulatory Matters (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Total capital to risk weighted assets	'	'
Actual, Amount	$349,894,000	$328,547,000
Actual, Ratio (as a percent)	12.89%	13.04%
For Capital Adequacy Purposes, Amount	217,111,000	201,530,000
For Capital Adequacy Purposes, Ratio (as a percent)	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	271,389,000	251,913,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (as a percent)	10.00%	10.00%
Tier 1 capital to risk weighted assets	'	'
Actual, Amount	321,513,000	300,732,000
Actual, Ratio (as a percent)	11.85%	11.94%
For Capital Adequacy Purposes, Amount	108,555,000	100,765,000
For Capital Adequacy Purposes, Ratio (as a percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	162,833,000	151,148,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (as a percent)	6.00%	6.00%
Tier 1 capital to average assets	'	'
Actual, Amount	321,513,000	300,732,000
Actual, Ratio (as a percent)	11.70%	10.49%
For Capital Adequacy Purposes, Amount	109,928,000	114,693,000
For Capital Adequacy Purposes, Ratio (as a percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	137,410,000	143,366,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (as a percent)	5.00%	5.00%
Bank	'	'
Regulatory Matters	'	'
Number of prior years of retained earnings used by primary regulator in determining whether to restrict dividends declared	'2 years	'
Accumulated earnings, which could be paid as dividends	173,800,000	'
Average amount of clearing balance	1,000,000	'
Total capital to risk weighted assets	'	'
Actual, Amount	343,392,000	315,511,000
Actual, Ratio (as a percent)	12.73%	12.59%
For Capital Adequacy Purposes, Amount	215,733,000	200,440,000
For Capital Adequacy Purposes, Ratio (as a percent)	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	269,666,000	250,550,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (as a percent)	10.00%	10.00%
Tier 1 capital to risk weighted assets	'	'
Actual, Amount	315,011,000	287,695,000
Actual, Ratio (as a percent)	11.68%	11.48%
For Capital Adequacy Purposes, Amount	107,867,000	100,220,000
For Capital Adequacy Purposes, Ratio (as a percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	161,800,000	150,330,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (as a percent)	6.00%	6.00%
Tier 1 capital to average assets	'	'
Actual, Amount	315,011,000	287,695,000
Actual, Ratio (as a percent)	11.54%	10.08%
For Capital Adequacy Purposes, Amount	109,212,000	114,196,000
For Capital Adequacy Purposes, Ratio (as a percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$136,515,000	$142,745,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (as a percent)	5.00%	5.00%

RelatedParty_Transactions_Deta

Related-Party Transactions (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Analysis of activity for loans to related parties	'	'	'
Balance, beginning of year	$32,604,000	$34,988,000	'
New loans	292,000	1,236,000	'
Loans paid off or paid down	-4,599,000	-3,620,000	'
Balance, end of year	28,297,000	32,604,000	34,988,000
Lease rent	7,900,000	6,600,000	5,500,000
2014	8,408,000	'	'
2015	6,933,000	'	'
2016	5,372,000	'	'
2017	3,830,000	'	'
2018	3,437,000	'	'
George Mason	'	'	'
Analysis of activity for loans to related parties	'	'	'
Lease rent	789,000	912,000	738,000
Remaining term of operating lease	'6 years	'	'
George Mason | Minimum	'	'	'
Analysis of activity for loans to related parties	'	'	'
2014	1,000,000	'	'
2015	1,000,000	'	'
2016	1,000,000	'	'
2017	1,000,000	'	'
2018	1,000,000	'	'
2019	1,000,000	'	'
George Mason | Maximum	'	'	'
Analysis of activity for loans to related parties	'	'	'
2014	1,200,000	'	'
2015	1,200,000	'	'
2016	1,200,000	'	'
2017	1,200,000	'	'
2018	1,200,000	'	'
2019	1,200,000	'	'
Bank | Minimum	'	'	'
Analysis of activity for loans to related parties	'	'	'
2014	31,000	'	'
2015	31,000	'	'
2016	31,000	'	'
Bank | Maximum	'	'	'
Analysis of activity for loans to related parties	'	'	'
2014	32,000	'	'
2015	32,000	'	'
2016	32,000	'	'
Director	'	'	'
Analysis of activity for loans to related parties	'	'	'
Ownership percentage in company leasing office space to entity	3.10%	'	'
Immediate family member of director | Bank	'	'	'
Analysis of activity for loans to related parties	'	'	'
Lease rent	$30,000	$34,000	'
Remaining term of operating lease	'3 years	'	'

Earnings_Per_Common_Share_Deta

Earnings Per Common Share (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Calculation of basic and diluted earnings per common share	'	'	'
Net income (in dollars)	$25,510	$45,297	$27,998
Weighted average shares for basic (in shares)	30,687,000	29,654,000	29,401,000
Weighted average shares for diluted (in shares)	31,077,000	29,996,000	29,784,000
Basic earnings per common share (in dollars per share)	$0.83	$1.53	$0.95
Diluted earnings per common share (in dollars per share)	$0.82	$1.51	$0.94
Composition of basic outstanding shares	'	'	'
Weighted average shares outstanding - basic	30,271,000	29,244,000	28,938,000
Weighted average shares attributable to deferred compensation plans	416,000	410,000	463,000
Total weighted average shares - basic	30,687,000	29,654,000	29,401,000
Composition of diluted outstanding shares	'	'	'
Weighted average shares outstanding - basic	30,271,000	29,244,000	28,938,000
Weighted average shares attributable to deferred compensation plans	628,000	664,000	694,000
Weighted average shares attributable to vested stock options	151,000	88,000	152,000
Incremental shares from unvested stock options	27,000	14,739	'
Total weighted average shares - diluted	31,077,000	29,996,000	29,784,000
Incremental weighted average shares attributable to deferred compensation plans	'	'	0
Antidilutive outstanding stock options excluded from the weighted average shares outstanding for the diluted earnings per share calculation (in shares)	157	'	19,412

401k_Plan_Details

401(k) Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
401(k) Plan	'	'	'
Minimum working hours per week required to participate and contribute into a 401(k) plan	'20 hours	'	'
Employer's contribution (as a percent)	50.00%	'	'
Expense recognized	$1,300,000	$1,100,000	$682,000
Maximum	'	'	'
401(k) Plan	'	'	'
Employer's contribution (as a percent)	3.00%	'	'

Deferred_Compensation_Plans_De

Deferred Compensation Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Compensation Plans	'	'	'
Expenses relating to the deferred compensation plans	$286,000	$215,000	$253,000
Deferred compensation plan liability	8,300,000	7,200,000	'
Director	'	'	'
Deferred Compensation Plans	'	'	'
Employers other than George Mason's contribution (as a percent)	50.00%	'	'
Employer's matching contribution per employee per year	0	'	'
Employee	'	'	'
Deferred Compensation Plans	'	'	'
Vesting period	'3 years	'	'
Employee | Maximum	'	'	'
Deferred Compensation Plans	'	'	'
Employer's matching contribution per employee per year	50,000	'	'
Executive officers	'	'	'
Deferred Compensation Plans	'	'	'
Expenses relating to the deferred compensation plans	210,000	2,400,000	434,000
Deferred compensation plan liability	$7,100,000	$6,900,000	'

Director_and_Employee_StockBas2

Director and Employee Stock-Based Compensation Plans (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 23, 2008	Dec. 31, 1998	Dec. 31, 2011	Dec. 31, 2013
	item	Stock options	Stock options	Stock options	Option Plan	Option Plan	Equity Plan	Equity Plan
Stock-based Compensation	'	'	'	'	'	'	'	'
Number of stock-based employee compensation plans	2	'	'	'	'	'	'	'
Number of shares of common stock reserved for issuance	'	'	'	'	'	625,000	3,170,000	'
Number of shares of common stock reserved for issuance before amendment	'	'	'	'	'	'	2,420,000	'
Increase in number of shares of common stock reserved for issuance	'	'	'	'	'	'	750,000	'
Number of shares of the company's common stock available for future grants and awards	'	'	'	'	0	'	'	701,818
Stock option, number of shares	'	'	'	'	'	'	'	'
Outstanding at the beginning of the period (in shares)	'	851,358	1,832,860	2,197,289	'	'	'	'
Granted (in shares)	'	278,250	63,750	153,100	'	'	'	'
Exercised (in shares)	'	-106,355	-1,027,702	-428,779	'	'	'	'
Forfeited (in shares)	'	-11,700	-17,550	-88,750	'	'	'	'
Outstanding at the end of the period (in shares)	'	1,011,553	851,358	1,832,860	'	'	'	'
Options exercisable at the end of the period (in shares)	'	722,403	682,458	1,659,160	'	'	'	'
Stock option, weighted average exercise price	'	'	'	'	'	'	'	'
Outstanding at the beginning of the period (in dollars per share)	'	$10.21	$9.38	$8.67	'	'	'	'
Granted (in dollars per share)	'	$16.23	$12.11	$11.20	'	'	'	'
Exercised (in dollars per share)	'	$8.64	$8.84	$6.13	'	'	'	'
Forfeited (in dollars per share)	'	$10.18	$10.20	$10.77	'	'	'	'
Outstanding at the end of the period (in dollars per share)	'	$12.03	$10.21	$9.38	'	'	'	'
Options exercisable at the end of the period (in dollars per share)	'	$11.15	$10.19	$9.38	'	'	'	'
Stock option, weighted average remaining contractual term	'	'	'	'	'	'	'	'
Outstanding at the end of the period	'	'5 years 5 months 8 days	'4 years 8 months 1 day	'4 years 2 months 8 days	'	'	'	'
Options exercisable at the end of the period	'	'4 years 3 months	'3 years 10 months 2 days	'3 years 8 months 26 days	'	'	'	'
Stock option, aggregate intrinsic value	'	'	'	'	'	'	'	'
Outstanding at the end of the period (in dollars)	'	$6,025,243	$5,182,708	$2,493,627	'	'	'	'
Options exercisable at the end of the period (in dollars)	'	$4,943,418	$4,166,600	$2,250,771	'	'	'	'

Director_and_Employee_StockBas3

Director and Employee Stock-Based Compensation Plans (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Information pertaining to stock options outstanding	'	'	'
Number of Options Outstanding (in shares)	1,011,553	'	'
Weighted Average Remaining Contractual Life	'5 years 5 months 8 days	'	'
Weighted Average Exercise Price (in dollars per share)	$12.03	'	'
Number of Options Exercisable (in shares)	722,403	'	'
Weighted Average Exercise Price (in dollars per share)	$11.15	'	'
Intrinsic value of options exercised (in dollars)	$875,000	$7,700,000	$2,000,000
Additional stock-based compensation information	'	'	'
Total unrecognized compensation cost related to non-vested share-based compensation arrangements granted under the plans	1,100,000	'	'
Expected weighted-average period for recognition of unrecognized compensation cost related to non-vested share-based compensation arrangements granted under the plans	'2 years 6 months	'	'
The total fair value of shares that vested	$765,000	$216,000	$681,000
Stock options	'	'	'
Non-vested stock options, number of shares	'	'	'
Balance at the beginning of the period (in shares)	168,900	173,700	211,500
Granted (in shares)	278,250	63,750	153,100
Vested (in shares)	-150,250	-54,220	-144,750
Forfeited (in shares)	-7,750	-14,330	-46,150
Balance at the end of the period (in shares)	289,150	168,900	173,700
Non-vested stock options, weighted average grant date fair value	'	'	'
Balance at the beginning of the period (in dollars per share)	$4.17	$3.94	$3.93
Granted (in dollars per share)	$5.83	$4.65	$4.84
Vested (in dollars per share)	$5.09	$3.99	$4.71
Forfeited (in dollars per share)	$4.21	$4.21	$4.47
Balance at the end of the period (in dollars per share)	$5.29	$4.17	$3.94
$5.95 - $8.28	'	'	'
Information pertaining to stock options outstanding	'	'	'
Exercise price, low end of range (in dollars per share)	$5.95	'	'
Exercise price, high end of range (in dollars per share)	$8.28	'	'
Number of Options Outstanding (in shares)	88,510	'	'
Weighted Average Remaining Contractual Life	'5 years 1 month 6 days	'	'
Weighted Average Exercise Price (in dollars per share)	$6.45	'	'
Number of Options Exercisable (in shares)	72,560	'	'
Weighted Average Exercise Price (in dollars per share)	$6.52	'	'
$8.39 - $9.59	'	'	'
Information pertaining to stock options outstanding	'	'	'
Exercise price, low end of range (in dollars per share)	$8.39	'	'
Exercise price, high end of range (in dollars per share)	$9.59	'	'
Number of Options Outstanding (in shares)	62,500	'	'
Weighted Average Remaining Contractual Life	'1 year 10 months 24 days	'	'
Weighted Average Exercise Price (in dollars per share)	$8.89	'	'
Number of Options Exercisable (in shares)	60,700	'	'
Weighted Average Exercise Price (in dollars per share)	$8.90	'	'
$9.78 - $10.91	'	'	'
Information pertaining to stock options outstanding	'	'	'
Exercise price, low end of range (in dollars per share)	$9.78	'	'
Exercise price, high end of range (in dollars per share)	$10.91	'	'
Number of Options Outstanding (in shares)	201,224	'	'
Weighted Average Remaining Contractual Life	'3 years 1 month 6 days	'	'
Weighted Average Exercise Price (in dollars per share)	$10.34	'	'
Number of Options Exercisable (in shares)	175,224	'	'
Weighted Average Exercise Price (in dollars per share)	$10.38	'	'
$11.03 - $12.65	'	'	'
Information pertaining to stock options outstanding	'	'	'
Exercise price, low end of range (in dollars per share)	$11.03	'	'
Exercise price, high end of range (in dollars per share)	$12.65	'	'
Number of Options Outstanding (in shares)	368,069	'	'
Weighted Average Remaining Contractual Life	'4 years 6 months	'	'
Weighted Average Exercise Price (in dollars per share)	$11.60	'	'
Number of Options Exercisable (in shares)	311,469	'	'
Weighted Average Exercise Price (in dollars per share)	$11.58	'	'
$13.00 - $15.02	'	'	'
Information pertaining to stock options outstanding	'	'	'
Exercise price, low end of range (in dollars per share)	$13	'	'
Exercise price, high end of range (in dollars per share)	$15.02	'	'
Number of Options Outstanding (in shares)	68,500	'	'
Weighted Average Remaining Contractual Life	'9 years 2 months 12 days	'	'
Weighted Average Exercise Price (in dollars per share)	$14.76	'	'
Number of Options Exercisable (in shares)	52,350	'	'
Weighted Average Exercise Price (in dollars per share)	$14.95	'	'
$15.32 - $17.82	'	'	'
Information pertaining to stock options outstanding	'	'	'
Exercise price, low end of range (in dollars per share)	$15.32	'	'
Exercise price, high end of range (in dollars per share)	$17.82	'	'
Number of Options Outstanding (in shares)	222,750	'	'
Weighted Average Remaining Contractual Life	'9 years 2 months 12 days	'	'
Weighted Average Exercise Price (in dollars per share)	$16.54	'	'
Number of Options Exercisable (in shares)	50,100	'	'
Weighted Average Exercise Price (in dollars per share)	$16.57	'	'

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item
Segment Reporting	'	'	'
Number of business segments	3	'	'
Segment reporting	'	'	'
Net interest income	$92,345	$91,003	$79,162
Provision for loan losses	-32	7,123	6,910
Non-interest income	29,911	63,392	34,333
Non-interest expense	84,603	79,317	64,465
Provision (benefit) for income taxes	12,175	22,658	14,122
Net income	25,510	45,297	27,998
Total Assets	2,894,230	3,039,187	2,602,716
Operating segment | Commercial Banking	'	'	'
Segment reporting	'	'	'
Net interest income	90,563	89,472	77,456
Provision for loan losses	-117	6,865	6,910
Non-interest income	3,767	5,868	6,116
Non-interest expense	43,832	43,495	42,202
Provision (benefit) for income taxes	16,734	14,436	11,397
Net income	33,881	30,544	23,063
Total Assets	2,862,039	2,954,412	2,549,326
Operating segment | Mortgage Banking	'	'	'
Segment reporting	'	'	'
Net interest income	2,474	2,365	2,522
Provision for loan losses	85	258	'
Non-interest income	24,760	54,794	25,592
Non-interest expense	35,185	29,529	16,032
Provision (benefit) for income taxes	-2,821	9,764	4,291
Net income	-5,215	17,608	7,791
Total Assets	380,124	815,820	531,403
Operating segment | Wealth Management Services	'	'	'
Segment reporting	'	'	'
Non-interest income	1,337	2,623	2,552
Non-interest expense	1,580	2,656	2,610
Provision (benefit) for income taxes	-81	-14	-29
Net income	-162	-19	-29
Total Assets	2,266	2,693	590
Other	'	'	'
Segment reporting	'	'	'
Net interest income	-692	-834	-816
Non-interest income	85	176	161
Non-interest expense	4,044	3,706	3,709
Provision (benefit) for income taxes	-1,657	-1,528	-1,537
Net income	-2,994	-2,836	-2,827
Total Assets	347,288	329,328	278,820
Intersegment Elimination	'	'	'
Segment reporting	'	'	'
Non-interest income	-38	-69	-88
Non-interest expense	-38	-69	-88
Total Assets	($697,487)	($1,063,066)	($757,423)

Financial_Instruments_with_Off2

Financial Instruments with Off Balance Sheet Risk (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financial Instruments with Off Balance Sheet Risk	'	'	'
Maximum expiration period of commitments	'1 year	'	'
Financial Instruments with Off Balance Sheet Risk	'	'	'
Fair value of liability associated with standby letters of credit and commitments to extend credit	$517,000	$415,000	'
Expense (benefit) related to the reserve for estimated exposure to repurchase loans previously sold to investors	-49,000	962,000	670,000
Commitments to extend credit	'	'	'
Financial Instruments with Off Balance Sheet Risk	'	'	'
Financial instruments whose contract amounts represents potential credit risk	1,486,572,000	1,248,766,000	'
Floating rates	'	'	'
Financial Instruments with Off Balance Sheet Risk	'	'	'
Financial instruments whose contract amounts represents potential credit risk	1,300,000,000	'	'
Standby letters of credit	'	'	'
Financial Instruments with Off Balance Sheet Risk	'	'	'
Financial instruments whose contract amounts represents potential credit risk	28,008,000	36,466,000	'
Amounts drawn	0	'	'
George Mason	'	'	'
Financial Instruments with Off Balance Sheet Risk	'	'	'
Loans repurchased from or settled with investors	302,000	375,000	'
Reserve balance	261,000	628,000	'
Expense (benefit) related to the reserve for estimated exposure to repurchase loans previously sold to investors	-49,000	962,000	670,000
George Mason | Mortgage loan funding	'	'	'
Financial Instruments with Off Balance Sheet Risk	'	'	'
Financial instruments whose contract amounts represents potential credit risk	210,900,000	'	'
Amounts drawn	0	'	'
Cardinal Statutory Trust I | Payment guarantee	'	'	'
Financial Instruments with Off Balance Sheet Risk	'	'	'
Guaranteed payment of Statutory Trust 1 debt	$20,000,000	'	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item
Fair Value Measurements	'	'	'
Investment securities available-for-sale	$349,319,000	$271,903,000	'
Investment securities - trading	3,890,000	3,151,000	'
Investment securities held-to-maturity	5,527,000	9,019,000	'
Number of pooled trust preferred securities	2	'	'
Total par value	4,000,000	'	'
Transfer in and out between level 1, level 2 and level 3	'	0	0
Pooled trust securities reclassified to the available-for-sale investment portfolio	2,800,000	'	'
Impairment of pooled trust preferred securities	300,000	'	'
Derivatives in fair value hedging relationships | Interest rate swaps	'	'	'
Fair Value Measurements	'	'	'
Number of fixed rate commercial loan hedged	1	'	'
Derivatives designated as cash flow hedges | Interest rate swaps	'	'	'
Fair Value Measurements	'	'	'
Number of derivatives	2	'	'
U.S. treasury securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	5,029,000	5,110,000	'
U.S. government-sponsored agencies	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	76,928,000	61,533,000	'
Mortgage-backed securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	147,829,000	118,913,000	'
Investment securities held-to-maturity	2,617,000	3,947,000	'
Municipal securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	116,738,000	86,347,000	'
Pooled trust preferred securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	2,795,000	'	'
Investment securities held-to-maturity	2,910,000	5,072,000	'
Impairment of pooled trust preferred securities	300,000	'	'
Quoted Prices in Active markets for Identical Assets (Level 1)	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	5,029,000	5,110,000	'
Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	344,290,000	266,793,000	'
Loans receivable - evaluated for impairment	301,000	12,472,000	'
Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value Measurements	'	'	'
Loans receivable - evaluated for impairment	2,024,534,000	1,810,884,000	'
Significant Unobservable Inputs (Level 3) | Loans secured primarily by commercial real estate	'	'	'
Fair Value Measurements	'	'	'
Loans receivable - evaluated for impairment	2,300,000	'	'
Number of relationships	1	'	'
Significant Unobservable Inputs (Level 3) | Loans primarily secured by business assets	'	'	'
Fair Value Measurements	'	'	'
Loans receivable - evaluated for impairment	814,000	'	'
Number of relationships	1	'	'
Significant Unobservable Inputs (Level 3) | Loans primarily secured by residence	'	'	'
Fair Value Measurements	'	'	'
Number of relationships	1	'	'
Recurring Fair Value Measurements | Balance	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	349,319,000	271,903,000	'
Investment securities - trading	3,890,000	3,151,000	'
Loan receivable designated in fair value hedge	'	11,652,000	'
Bank-owned life insurance	32,063,000	31,652,000	'
Recurring Fair Value Measurements | Balance | Rate Lock and Forward Loan Sales Commitments	'	'	'
Fair Value Measurements	'	'	'
Derivative liability	4,052,000	4,072,000	'
Derivative asset	16,478,000	26,793,000	'
Recurring Fair Value Measurements | Balance | Interest rate lock commitments	'	'	'
Fair Value Measurements	'	'	'
Derivative liability	1,554,000	91,000	'
Derivative asset	9,000	449,000	'
Recurring Fair Value Measurements | Balance | Interest rate swaps	'	'	'
Fair Value Measurements	'	'	'
Derivative liability	'	616,000	'
Recurring Fair Value Measurements | Balance | U.S. treasury securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	5,029,000	5,110,000	'
Recurring Fair Value Measurements | Balance | U.S. government-sponsored agencies	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	76,928,000	61,533,000	'
Recurring Fair Value Measurements | Balance | Mortgage-backed securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	147,829,000	118,913,000	'
Recurring Fair Value Measurements | Balance | Municipal securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	116,738,000	86,347,000	'
Recurring Fair Value Measurements | Balance | Pooled trust preferred securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	2,795,000	'	'
Recurring Fair Value Measurements | Quoted Prices in Active markets for Identical Assets (Level 1)	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	5,029,000	5,110,000	'
Recurring Fair Value Measurements | Quoted Prices in Active markets for Identical Assets (Level 1) | U.S. treasury securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	5,029,000	5,110,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	344,290,000	266,793,000	'
Investment securities - trading	3,890,000	3,151,000	'
Loan receivable designated in fair value hedge	'	11,652,000	'
Bank-owned life insurance	32,063,000	31,652,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2) | Rate Lock and Forward Loan Sales Commitments	'	'	'
Fair Value Measurements	'	'	'
Derivative liability	4,052,000	4,072,000	'
Derivative asset	16,478,000	26,793,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2) | Interest rate lock commitments	'	'	'
Fair Value Measurements	'	'	'
Derivative liability	1,554,000	91,000	'
Derivative asset	9,000	449,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2) | Interest rate swaps	'	'	'
Fair Value Measurements	'	'	'
Derivative liability	'	616,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2) | U.S. government-sponsored agencies	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	76,928,000	61,533,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	147,829,000	118,913,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2) | Municipal securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	116,738,000	86,347,000	'
Recurring Fair Value Measurements | Significant Other Observable Inputs (Level 2) | Pooled trust preferred securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities available-for-sale	2,795,000	'	'
Nonrecurring Fair Value Measurements | Balance	'	'	'
Fair Value Measurements	'	'	'
Loans receivable - evaluated for impairment	3,378,000	8,446,000	'
Nonrecurring Fair Value Measurements | Balance | Pooled trust preferred securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities held-to-maturity	2,910,000	5,072,000	'
Nonrecurring Fair Value Measurements | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value Measurements	'	'	'
Loans receivable - evaluated for impairment	301,000	820,000	'
Nonrecurring Fair Value Measurements | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value Measurements	'	'	'
Loans receivable - evaluated for impairment	3,077,000	7,626,000	'
Nonrecurring Fair Value Measurements | Significant Unobservable Inputs (Level 3) | Pooled trust preferred securities	'	'	'
Fair Value Measurements	'	'	'
Investment securities held-to-maturity	$2,910,000	$5,072,000	'

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Financial assets:	'	'
Investment securities available-for-sale	$349,319,000	$271,903,000
Financial liabilities:	'	'
Demand deposits	433,749,000	351,815,000
Other borrowed funds	475,232,000	392,275,000
Quoted Prices in Active markets for Identical Assets (Level 1)	'	'
Financial assets:	'	'
Cash and cash equivalents	29,209,000	67,140,000
Investment securities available-for-sale	5,029,000	5,110,000
Accrued interest receivable	7,939,000	7,333,000
Financial liabilities:	'	'
Demand deposits	433,749,000	351,815,000
Interest checking	398,136,000	347,697,000
Money market and statement savings	475,707,000	430,391,000
Accrued interest payable	869,000	974,000
Significant Other Observable Inputs (Level 2)	'	'
Financial assets:	'	'
Investment securities available-for-sale	344,290,000	266,793,000
Investment securities held-to-maturity and other investments	21,685,000	18,249,000
Loans held for sale	373,993,000	785,751,000
Loans receivable, net	301,000	12,472,000
Financial liabilities:	'	'
Certificates of deposit	756,191,000	1,124,235,000
Other borrowed funds	491,236,000	418,808,000
Significant Unobservable Inputs (Level 3)	'	'
Financial assets:	'	'
Investment securities held-to-maturity and other investments	2,910,000	5,072,000
Loans receivable, net	2,024,534,000	1,810,884,000
Carrying Amount	'	'
Financial assets:	'	'
Cash and cash equivalents	29,209,000	67,140,000
Investment securities available-for-sale	349,319,000	271,903,000
Investment securities held-to-maturity and other investments	25,545,000	25,668,000
Loans held for sale	373,993,000	785,751,000
Loans receivable, net	2,012,304,000	1,776,029,000
Accrued interest receivable	7,939,000	7,333,000
Financial liabilities:	'	'
Demand deposits	433,749,000	351,815,000
Interest checking	398,136,000	347,697,000
Money market and statement savings	475,707,000	430,391,000
Certificates of deposit	751,267,000	1,113,855,000
Other borrowed funds	475,232,000	392,275,000
Accrued interest payable	869,000	974,000
Estimated Fair Value	'	'
Financial assets:	'	'
Cash and cash equivalents	29,209,000	67,140,000
Investment securities available-for-sale	349,319,000	271,903,000
Investment securities held-to-maturity and other investments	24,595,000	23,321,000
Loans held for sale	373,993,000	785,751,000
Loans receivable, net	2,024,835,000	1,823,356,000
Accrued interest receivable	7,939,000	7,333,000
Financial liabilities:	'	'
Demand deposits	433,749,000	351,815,000
Interest checking	398,136,000	347,697,000
Money market and statement savings	475,707,000	430,391,000
Certificates of deposit	756,191,000	1,124,235,000
Other borrowed funds	491,236,000	418,808,000
Accrued interest payable	$869,000	$974,000

Parent_Company_Only_Financial_2

Parent Company Only Financial Statements (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets	'	'	'	'
Cash and cash equivalents	$29,209,000	$67,140,000	$37,139,000	$25,868,000
Investment securities - Trading	3,890,000	3,151,000	'	'
Other investments	19,068,000	14,302,000	'	'
Premises and equipment, net	20,389,000	19,192,000	'	'
Goodwill	10,144,000	10,144,000	'	'
Total assets	2,894,230,000	3,039,187,000	2,602,716,000	'
Liabilities and Shareholders' Equity	'	'	'	'
Total liabilities	2,573,698,000	2,731,121,000	'	'
Shareholders' equity:	'	'	'	'
Total shareholders' equity	320,532,000	308,066,000	257,817,000	222,902,000
Total liabilities and shareholders' equity	2,894,230,000	3,039,187,000	'	'
Parent company	'	'	'	'
Assets	'	'	'	'
Cash and cash equivalents	4,311,000	7,141,000	6,639,000	14,522,000
Investment securities - Trading	3,890,000	3,151,000	'	'
Other investments	113,000	113,000	'	'
Investment in subsidiaries	333,076,000	315,367,000	'	'
Premises and equipment, net	632,000	671,000	'	'
Goodwill	24,000	24,000	'	'
Other assets	5,242,000	2,861,000	'	'
Total assets	347,288,000	329,328,000	'	'
Liabilities and Shareholders' Equity	'	'	'	'
Debt to Cardinal Statutory Trust I	20,619,000	20,619,000	'	'
Other liabilities	6,137,000	643,000	'	'
Total liabilities	26,756,000	21,262,000	'	'
Shareholders' equity:	'	'	'	'
Total shareholders' equity	320,532,000	308,066,000	'	'
Total liabilities and shareholders' equity	$347,288,000	$329,328,000	'	'

Parent_Company_Only_Financial_3

Parent Company Only Financial Statements (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income:	'	'	'
Net interest expense	$92,345	$91,003	$79,162
Other income (loss)	43	-6	14
Net loss before income taxes and equity in undistributed earnings of subsidiaries	37,685	67,955	42,120
Income tax benefit	12,175	22,658	14,122
Net income	25,510	45,297	27,998
Parent company	'	'	'
Income:	'	'	'
Net interest expense	-692	-834	-816
Net realized and unrealized trading losses	68	158	144
Other income (loss)	17	18	17
Total income (loss)	-607	-658	-655
Expense - general and administrative	4,044	3,706	3,709
Net loss before income taxes and equity in undistributed earnings of subsidiaries	-4,651	-4,364	-4,364
Income tax benefit	-1,657	-1,528	-1,537
Equity in undistributed earnings of subsidiaries	28,504	48,133	30,825
Net income	$25,510	$45,297	$27,998

Parent_Company_Only_Financial_4

Parent Company Only Financial Statements (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'	'
Depreciation	$3,196	$2,669	$2,517
Proceeds from sale of investment securities - trading	'	'	743
Purchase of investment securities - trading	-1,707	-1,174	-1,182
Unrealized gain on investment securities - trading	-68	-158	-144
Net cash provided by (used in) operating activities	445,280	-207,840	-288,455
Cash flows from financing activities:	'	'	'
Dividends on common stock	-6,964	-5,892	-3,474
Stock options exercised	1,084	9,090	2,627
Net cash provided by (used in) financing activities	-152,809	379,276	516,969
Net increase (decrease) in cash and cash equivalents	-37,931	30,001	11,271
Cash and cash equivalents at beginning of year	67,140	37,139	25,868
Cash and cash equivalents at end of year	29,209	67,140	37,139
Parent company	'	'	'
Cash flows from operating activities:	'	'	'
Net income	25,510	45,297	27,998
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'	'
Equity in undistributed earnings of subsidiaries	-28,504	-48,133	-30,825
Depreciation	39	42	44
Proceeds from sale of investment securities - trading	'	'	743
Purchase of investment securities - trading	-1,707	-1,174	-1,182
Unrealized gain on investment securities - trading	-68	-158	-144
Increase (decrease) in other assets and liabilities	7,782	1,430	-3,670
Net cash provided by (used in) operating activities	3,050	-2,696	-7,036
Cash flows from financing activities:	'	'	'
Dividends on common stock	-6,964	-5,892	-3,474
Stock options exercised	1,084	9,090	2,627
Net cash provided by (used in) financing activities	-5,880	3,198	-847
Net increase (decrease) in cash and cash equivalents	-2,830	502	-7,883
Cash and cash equivalents at beginning of year	7,141	6,639	14,522
Cash and cash equivalents at end of year	$4,311	$7,141	$6,639

Other_Operating_Expenses_Detai

Other Operating Expenses (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Operating Expenses	'	'	'
Stationary and supplies	$1,808	$1,693	$1,183
Other taxes	624	467	284
Travel and entertainment	764	763	632
Premises and equipment	4,164	3,524	2,669
Business memberships	500	447	328
Employment services	141	253	172
Board of directors expenses	698	538	575
Loan expense	589	454	463
Miscellaneous	3,944	3,236	2,106
Total other operating expense	$13,232	$11,375	$8,412

Subsequent_Events_Details

Subsequent Events (Details) (Subsequent event, USD $)	0 Months Ended
In Billions, except Per Share data, unless otherwise specified	Jan. 16, 2014	Mar. 08, 2014
	UFBC	TBB
		Cardinal Bank
		item
Subsequent events	'	'
Cash paid to UFBC shareholders in exchange for each share of UFBC common stock (in dollars per share)	$19.13	'
Number of shares paid to UFBC shareholders in exchange for each share of UFBC common stock	$1.15	'
Number of banking locations added	'	8
Total purchase price	$53.60	'