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Related Party Transactions (Details) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Apr. 30, 2018
Sep. 30, 2018
Related Party Transaction [Line Items]    
Travel and out of pocket expenses   $ 50
Proceeds from legal settlements $ 800  
Investor    
Related Party Transaction [Line Items]    
Initial term of service agreements   1 year
Renewal term for service agreements   1 year
Termination period between extension date   60 days
EGI    
Related Party Transaction [Line Items]    
Percentage ownership of Par common stock (or more)   10.00%