Warrant Liabilities (Details) - USD ($)		3 Months Ended
	Jun. 30, 2017	Sep. 30, 2017	Sep. 01, 2017	Jul. 18, 2017
Fair value assumptions for warrants
Warrants exercised			675,000	900,000
Changes in fair value of warrant liabilities	$ 2,600,000	$ 86,378,330
Reclass of warrant liability to capital contributed in excess of par		11,241,662
Warrant liabilities	$ 90,706,206	165,842,874
Warrant Liability.
Fair value assumptions for warrants
Reclass of warrant liability to capital contributed in excess of par		1,575,000
Warrant Liability. | Level 2
Fair value assumptions for warrants
Changes in fair value of warrant liabilities		86,378,000
Reclass of warrant liability to capital contributed in excess of par		$ 11,241,000