Investment Securities (Summary Of Interest Income On Available-For-Sale Investment Securities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income	$ 514	$ 608
Total tax-exempt interest income	145	141
Total interest income	659	749
U.S Treasury And Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income	207	307
U.S. Agency Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income		1
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Total taxable interest income	307	300
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total tax-exempt interest income	$ 145	$ 141