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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]  
Schedule of Official Exchange Rate

    2018     2017  
Official exchange rate of NIS 1 to US dollar     0.267       0.288  
Increase (decrease) of the Official exchange rate of NIS 1 to US dollar during the year:                
2018     (7.50 %)        
2017     10.90 %        
Schedule of Property and Equipment, Rates of Depreciation

    %  
Computers     33  
Furniture and office equipment     7-15  
Leasehold improvements     Shorter of lease term and 10 years  
Schedule of Restrict Cash Balances are Included with Cash and Cash Equivalents

    December 31     December 31  
    2018     2017  
             
Cash and cash equivalents   $ 97,079     $ 53,782  
Restricted cash     52,605       39,562  
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows   $ 149,684     $ 93,344