Goodwill And Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Aug. 10, 2012	Dec. 31, 2011
Schedule Of Goodwill And Other Intangible Assets [Line Items]
Goodwill	$ 5,231		$ 3,158
Core Deposit Intangible Asset, Estimated Life	8 years 6 months
Expected amortization of the core deposit intangible assets	36
Acquired Finite-lived Intangible Asset, Amount		40,833
Scenario, Plan [Member]
Schedule Of Goodwill And Other Intangible Assets [Line Items]
Expected amortization of the core deposit intangible assets	92
Core deposit intangible [Member]
Schedule Of Goodwill And Other Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Amount	$ 770	$ 783