Loans Reconciliation Of Contractual Required Principal And Interest Balance To The Carrying Amount Of Purchased Credit Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Virginia Savings Bank [Member]	Dec. 31, 2012 Virginia Savings Bank [Member]	May 31, 2012 Virginia Savings Bank [Member]	Jun. 30, 2013 Community Bank [Member]	Jan. 10, 2013 Community Bank [Member]	Dec. 31, 2012 Community Bank [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest	$ 55,180		$ 7,330	$ 10,759	$ 11,567	$ 47,850	$ 58,014	$ 0
Contractual cash flows not expected to be collected (non-accretable difference)	(16,023)		(497)		(3,973)	(15,526)	(20,724)
Expected cash flows	39,157		6,833		7,594	32,324	37,290
Accretable yield	(5,891)	(1,823)	(1,412)	(1,823)		(4,479)		0
Carrying value			5,421	7,018		27,845		0
Basis in acquired loans	$ 33,266	$ 7,018	$ 5,421	$ 7,018		$ 27,845		$ 0

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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The investor's estimate, at acquisition, of the amount and timing of undiscounted principal, interest, and other cash flows expected to be collected. This would be the investor's best estimate of cash flows, including the effect of prepayments if considered, that is used in determining the acquisition price, and, in a business combination, the investor's estimate of fair value for purposes of acquisition price allocation. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

The total undiscounted amount of all uncollected contractual principal and contractual interest payments both past due and scheduled for the future, adjusted for the timing of prepayments, if considered, less any reduction by the investor at the acquisition date. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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