Investments (Aggregate Carrying And Approximate Market Values Of Held-To-Maturity Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Amortized Cost	$ 84,082	$ 90,786
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	2,479	3,405
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Securities held-to-maturity, Estimated Fair Value	86,561	94,191
Other Investments and Securities, at Cost	9,926	9,857
Other Investment Not Readily Marketable, Fair Value	9,926	9,857
U.S. Government Agencies Mortgage-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Amortized Cost	80,081	86,742
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	1,770	2,733
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Securities held-to-maturity, Estimated Fair Value	81,851	89,475
Trust Preferred Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Amortized Cost	4,001	4,044
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	709	672
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	0	0
Securities held-to-maturity, Estimated Fair Value	4,710	4,716
Non-Marketable Equity Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Other Investments and Securities, at Cost	9,926	9,857
Other Investment Not Readily Marketable, Fair Value	$ 9,926	$ 9,857