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Significant Accounting Policies (Useful Lives Of Each Class Of Assets) (Details) - Weighted Average [Member]
12 Months Ended
Dec. 31, 2015
Leasehold Improvements [Member]  
Property Plant And Equipment [Line Items]  
Property Plant And Equipment Useful Life 15 years
Furniture And Fixtures [Member]  
Property Plant And Equipment [Line Items]  
Property Plant And Equipment Useful Life 5 years
Equipment And Software [Member]  
Property Plant And Equipment [Line Items]  
Property Plant And Equipment Useful Life 4 years