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Summary of Significant Accounting Policies (Narrative) (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
segment
Jan. 01, 2019
USD ($)
Dec. 31, 2018
USD ($)
RECENT ACCOUNTING PRONOUNCEMENTS      
Asset held for sale $ 7,000,000    
Contractual term 10 years    
Number of operating segments | segment 1    
Minimum      
RECENT ACCOUNTING PRONOUNCEMENTS      
Vesting period 1 year    
Maximum      
RECENT ACCOUNTING PRONOUNCEMENTS      
Vesting period 3 years    
Equipment      
RECENT ACCOUNTING PRONOUNCEMENTS      
Useful life 5 years    
Furniture      
RECENT ACCOUNTING PRONOUNCEMENTS      
Useful life 7 years    
Equipment and Furniture      
RECENT ACCOUNTING PRONOUNCEMENTS      
Accumulated depreciation and amortization $ 100,000   $ 100,000
Accounting Standards Update 2016-02      
RECENT ACCOUNTING PRONOUNCEMENTS      
Right-of-use asset   $ 400,000  
Lease liability   $ 400,000