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Leases (Detail Textuals) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Leases [Abstract]        
Operating lease expense   $ 156,329    
Operating lease, payments $ 245,222      
Remaining lease term 6 years 3 months 18 days 6 years 3 months 18 days    
Discount rate lease liability 12.00% 12.00%    
Other rent related expenses     $ 400 $ 500