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Description of Business and Summary of Significant Accounting Policies (Summary Of Inventories) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Description of Business and Summary of Significant Accounting Policies [Abstract]    
Raw materials $ 5,812 $ 5,719
Work in process 1,787 1,221
Finished goods 12,344 10,720
Inventories $ 19,943 $ 17,660