Investment Securities (Investments Classified By Contractual Maturity Date) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Investment Securities [Abstract]
Held to Maturity, Due after one year through five years, Amortized Cost	$ 2
Held to Maturity, Due after five years through ten years, Amortized Cost	23,131
Held to Maturity, Due after ten years, Amortized Cost	42,891
Held to Maturity, Total investment securities, Amortized Cost	66,024	36,427
Held to Maturity, Due after one year through five years, Estimated Fair Value	2
Held to Maturity, Due after five years through ten years, Estimated Fair Value	24,159
Held to Maturity, Due after ten years, Estimated Fair Value	44,146
Held-to-maturity, Total investment securities, Estimated Fair Value	68,307	37,681
Available for Sale, Due in one year or less, Amortized Cost	9,860
Available for Sale, Due after one year through five years, Amortized Cost	39,573
Available for Sale, Due after five years through ten years, Amortized Cost	30,850
Available for Sale, Due after ten years, Amortized Cost	53,725
Available for Sale, No state maturity, Amortized Cost	27
Available for Sale, Total investment securities, Amortized Cost	134,035	107,543
Available for Sale, Due in one year or less, Estimated Fair Value	9,911
Available for Sale, Due after one year through five years, Estimated Fair Value	40,231
Available for Sale, Due after five years through ten years, Estimated Fair Value	30,729
Available for Sale, Due after ten years, Estimated Fair Value	54,403
Available for Sale, No stated maturity, Estimated Fair Value	14
Available for Sale, Total investment securities, Estimated Fair Value	$ 135,288	$ 107,530

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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