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Organization and Summary of Significant Accounting Policies (Inventories) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Inventory, Gross [Abstract]    
Raw materials $ 43,092 $ 29,788
Work-in-process 28,133 26,440
Finished goods 41,332 34,902
Total inventories $ 112,557 $ 91,130