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Commitments and Contingencies (Details 1) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Jun. 30, 2017
Jun. 30, 2016
Commitments and Contingencies [Abstract]            
Rent expense $ 35,000 $ 35,000 $ 70,000 $ 70,000 $ 139,000 $ 120,000