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Organization and Summary of Significant Accounting Policies (Estimated Useful Lives Of Property Plant And Equipment) (Details)
12 Months Ended
Dec. 31, 2016
Equipment and Furniture [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful lives, years 5 years
Computer Equipment and Software [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful lives, years 3 years
Leasehold Improvements [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful lives, years 7 years