Investments (Aggregate Carrying And Approximate Market Values Of Held-To-Maturity Securities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Amortized Cost	$ 14,344	$ 4,117
Securities held-to-maturity, Gross Unrealized Gains	671	1,218
Securities held-to-maturity, Gross Unrealized Losses	0	0
Securities held-to-maturity, Estimated Fair Value	15,015	5,335
U.S. Government Agencies Mortgage-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Amortized Cost	10,224	0
Securities held-to-maturity, Gross Unrealized Gains	29	0
Securities held-to-maturity, Gross Unrealized Losses	0	0
Securities held-to-maturity, Estimated Fair Value	10,253	0
Trust Preferred Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Amortized Cost	4,120	4,117
Securities held-to-maturity, Gross Unrealized Gains	642	1,218
Securities held-to-maturity, Gross Unrealized Losses	0	0
Securities held-to-maturity, Estimated Fair Value	4,762	5,335
Non-Marketable Equity Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Amortized Cost	13,343	13,343
Securities held-to-maturity, Gross Unrealized Gains	0	0
Securities held-to-maturity, Gross Unrealized Losses	0	0
Securities held-to-maturity, Estimated Fair Value	$ 13,343	$ 13,343