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Leases - Schedule of Maturities of Operating Leases (Details) (10-K) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Jan. 02, 2019
Dec. 31, 2018
Leases [Abstract]        
2020 $ 8,000 $ 635,000    
2021 8,000 620,000    
2022 8,000 634,000    
2023   655,000    
2024   670,000    
Thereafter   932,000    
Total operating lease payments 50,000 4,146,000    
Less imputed interest (4,000) (846,000)    
Operating lease liabilities $ 46,000 $ 3,300,000 $ 3,458,000 $ 3,458,000