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Summary of Significant Accounting Policies (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
segment
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
segment
Jan. 01, 2019
USD ($)
Income Taxes            
Provision (benefit) for income taxes $ 0 $ 0 $ 0 $ 0 $ 0  
Segment Information            
Number of operating segment | segment     1   1  
Recent Accounting Pronouncements            
Lease, Practical Expedients, Package [true false]     true      
Right of use asset 18,000   $ 18,000   $ 68,000  
Lease asset liability $ 18,000   $ 18,000   $ 70,000  
ASU 2016-02 | Adjustment            
Recent Accounting Pronouncements            
Right of use asset           $ 100,000
Lease asset liability           $ 100,000