Quarterly report pursuant to Section 13 or 15(d)

Derivative Liabilities (Details)

Derivative Liabilities (Details) - Level 3 [Member]
6 Months Ended
Dec. 31, 2018
USD ($)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]  
Balance at beginning $ 1,104,701
Change in fair value of derivative warrant liabilities (186,701)
Balance at ending $ 918,000