Investments (Aggregate Carrying And Approximate Market Values Of Held-To-Maturity Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Securities Held-to-Maturity, Amortized Cost	$ 53,362	$ 60,827
Securities held-to-maturity, Accumulated Unrecognized Holding Gain	1,360	173
Securities held-to-maturity, Accumulated Unrecognized Holding Loss	45	294
Securities held-to-maturity, Estimated Fair Value	54,677	60,706
U.S. Government Agencies Mortgage-backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Securities Held-to-Maturity, Amortized Cost	53,362	56,827
Securities held-to-maturity, Accumulated Unrecognized Holding Gain	1,360	173
Securities held-to-maturity, Accumulated Unrecognized Holding Loss	45	294
Securities held-to-maturity, Estimated Fair Value	$ 54,677	56,706
Trust Preferred Securities
Schedule of Held-to-maturity Securities [Line Items]
Securities Held-to-Maturity, Amortized Cost		4,000
Securities held-to-maturity, Accumulated Unrecognized Holding Gain		0
Securities held-to-maturity, Accumulated Unrecognized Holding Loss		0
Securities held-to-maturity, Estimated Fair Value		$ 4,000