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Employee Benefit Plans (Summary Of Activity Within The Defined Benefit Plan) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value at beginning of measurement period $ 14,667 $ 14,726  
Actual gain (loss) on plan assets (231) 496  
Defined Benefit Plan, Contributions by Employer 4,399 409  
Benefits paid (1,400) (964)  
Fair value at End of measurement period 17,435 14,667 $ 14,726
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of measurement period (21,390) (17,524)  
Interest cost (813) (836) (776)
Actuarial loss 1,103 (3,994)  
Benefit obligation at end of measurement period (19,700) (21,390) $ (17,524)
Funded status (2,265) (6,723)  
Benefits paid 1,400 964  
Other comprehensive loss $ (4,760) $ (5,350)  
Weighted-average assumptions for balance sheet liability at end of year, Discount rate 4.26% 3.93%  
Weighted-average assumptions for balance sheet liability at end of year, Expected long-term rate of return 5.75% 6.92%  
Weighted-average assumptions for benefit cost at beginning of year, Discount rate 3.93% 4.89%  
Weighted-average assumptions for benefit cost at beginning of year, Expected long-term rate of return 6.92% 7.35%