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Goodwill And Other Intangible Assets (Schedule Of Goodwill) (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Goodwill [Line Items]  
Beginning Balance $ 18,090
Ending Balance 18,090
Sierra [Member]  
Goodwill [Line Items]  
Beginning Balance 18,090
Ending Balance $ 18,090