Summary Of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2012 lines_of_business
Lines of business	2
Number of days before loans are placed on non-accrual status	60 days
Minimum [Member]
Estimated useful lives or term of the lease (years)	3 years
Maximum [Member]
Estimated useful lives or term of the lease (years)	40 years
Other Intangible Assets [Member] | Minimum [Member]
Estimated useful life finite-lived intangibles assets (years)	5 years
Other Intangible Assets [Member] | Maximum [Member]
Estimated useful life finite-lived intangibles assets (years)	20 years
Core deposits | Minimum [Member]
Estimated useful life finite-lived intangibles assets (years)	16 years
Core deposits | Maximum [Member]
Estimated useful life finite-lived intangibles assets (years)	22 years