Warrant Liabilities (Details) - USD ($)	3 Months Ended	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2017	Oct. 11, 2016
Class of Warrant or Right [Line Items]
Warrant liabilities	$ 65,199,603	$ 65,199,603
Change in fair value of warrant liabilities	28,336,865	35,567,205
Warrant Liability.
Class of Warrant or Right [Line Items]
Warrant liabilities	65,200,000	65,200,000	$ 14,500,000
Change in fair value of warrant liabilities	$ 28,300,000	$ 35,600,000