Goodwill and Other Intangible Assets (Schedule Of Components Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 75,962	$ 74,313
Accumulated Amortization	(64,640)	(63,677)
Other intangible assets, net	11,322	10,636
Insurance license [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,400	1,400
Other intangible assets, net	1,400	1,400
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	54,862	53,213
Accumulated Amortization	(52,640)	(52,319)
Other intangible assets, net	$ 2,222	$ 894
Useful Lives (in years)	11 years	11 years
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 15,400	$ 15,400
Accumulated Amortization	(7,700)	(7,058)
Other intangible assets, net	$ 7,700	$ 8,342
Useful Lives (in years)	24 years	24 years
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,300	$ 4,300
Accumulated Amortization	(4,300)	(4,300)
Other intangible assets, net	$ 0	$ 0
Useful Lives (in years)	10 years	10 years