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Net Loss per Share (Details) - USD ($)
 3 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Reconciliation of basic and diluted net loss per share [Abstract]    
Net loss $ (3,012,000) $ (6,151,000)
Basic shares (in shares) 18,976,178 18,822,178
Effect of potentially dilutive securities (in shares) 0 0
Diluted shares (in shares) 18,976,178 18,822,178
Net loss per share:    
Basic net loss per share (in dollars per share) $ (0.16) $ (0.33)
Diluted net loss per share (in dollars per share) $ (0.16) $ (0.33)
Options [Member]    
Antidilutive Securities [Abstract]    
Antidilutive shares excluded from computation of earnings per share (in shares) 2,133,786 1,520,811