Securities (Summary Of Maturities, Amortized Cost And Estimated Fair Values Of Securities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Securities [Abstract]
Due in one year or less, Amortized Cost	$ 68,134
Due from one to five years, Amortized Cost	85,865
Due from five to ten years, Amortized Cost	15,870
Due after ten years, Amortized Cost	105,576
Equity securities, Amortized Cost	77
Total Amortized Cost	275,522
Due in one year or less, Estimated Fair Value	69,092
Due from one to five years, Estimated Fair Value	87,851
Due from five to ten years, Estimated Fair Value	16,339
Due after ten years, Estimated Fair Value	109,695
Equity securities, Estimated Fair Value	77
Total Estimated Fair Value	$ 283,054