Other Investment Securities (Schedule Of Other Investment Securities) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Schedule of Investments [Line Items]
Federal Home Loan Bank Stock	$ 37,983,000		$ 43,388,000
Federal Reserve Bank Stock	10,811,000		8,225,000
Equity investments carried at fair value	1,769,000		1,649,000
Equity Method Investments	2,589,000		2,589,000
Other investment securities	53,152,000		$ 55,851,000
Gain on equity securities, net	$ 121,000	$ 3,489,000
Equity Securities, FV-NI, Unrealized Gain		(3,500,000)
Investments [Member]
Schedule of Investments [Line Items]
Gain on equity securities, net		$ (11,000)