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Consolidated Statements of Operations (Parenthetical) - USD ($)
6 Months Ended 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Income Statement [Abstract]        
Stock-based compensation $ 20,000 $ 20,000 $ 40,000 $ 110,000