Share Based Compensation - Nonvested Share Activity (Details)	9 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Fair value of options vested | $	$ 2,317
Shares
Nonvested at September 30, 2017 | shares	4,300,000
Granted (shares) | shares	1,365,000
Vested (shares) | shares	(1,995,000)
Forfeited (shares) | shares	(112,000)
Nonvested at June 30, 2018 | shares	3,558,000
Weighted Average Grant Date Fair Value/Share
Weighted average grant date fair value, nonvested, beginning balance (in dollars per share) | $ / shares	$ 1.36
Weighted average grant date fair value, granted (in dollars per share) | $ / shares	7.94
Weighted average grant date fair value, vested (in dollars per share) | $ / shares	1.16
Weighted average grant date fair value, forfeited (in dollars per share) | $ / shares	2.25
Weighted average grant date fair value, nonvested, ending balance (in dollars per share) | $ / shares	$ 3.97