Investment Securities (Summary Of Interest Income On Available-For-Sale Investment Securities) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income	$ 1,711	$ 1,882
Total tax-exempt interest income	429	369
Total interest income	2,140	2,251
U.S Treasury And Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income	755	1,197
U.S. Agency Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income	2	2
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income	954	683
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total tax-exempt interest income	$ 429	$ 369