Goodwill and Other Intangible Assets (Schedule Of Components Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 73,530	$ 73,530
Accumulated Amortization	(47,905)	(41,828)
Other intangible assets, net	25,625	31,702
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	52,430	52,430
Accumulated Amortization	(39,332)	(34,327)
Other intangible assets, net	$ 13,098	$ 18,103
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	(5,133)	(4,491)
Other intangible assets, net	$ 10,267	$ 10,909
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	(3,440)	(3,010)
Other intangible assets, net	$ 860	$ 1,290
Useful Lives (in years)	10 years	10 years