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Goodwill and Other Intangible Assets (Schedule Of Components Of Other Intangible Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 74,148 $ 73,990
Accumulated Amortization (58,614) (53,262)
Other intangible assets, net 15,534 20,728
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 53,048 52,890
Accumulated Amortization (47,897) (43,617)
Other intangible assets, net $ 5,151 $ 9,273
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 (6,417) (5,775)
Other intangible assets, net $ 8,983 $ 9,625
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) (3,870)
Other intangible assets, net $ 0 $ 430
Useful Lives (in years) 10 years 10 years