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Other Financial Statement Data (Schedule Of Inventory Components) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
OTHER FINANCIAL STATEMENT DATA [Abstract]    
Raw materials and purchased parts $ 8,821 $ 7,383
Work in process 2,446 1,666
Finished goods 4,896 5,344
Total inventories $ 16,163 $ 14,393