Debt Convertible Senior Notes (Details)			1 Months Ended	9 Months Ended	12 Months Ended
	Sep. 21, 2017 USD ($)	Sep. 21, 2017 USD ($) shares	Feb. 28, 2015 USD ($) $ / shares shares	Mar. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) $ / shares	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Debt Instrument [Line Items]
Issuance of Common Shares for Debt Conversion					$ 92,307,266	$ 0	$ 0
Interest on non-recourse debt					19,789,995	0	0
Amortization of debt issuance costs					$ 1,678,589	729,821	729,821
Four Point Seven Five Percent Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount			$ 100,000,000.0
Proceeds from debt, net of issuance costs			96,300,000
Debt instrument, maturity date					Feb. 15, 2020
Payments of debt issuance costs			$ 3,700,000
Debt instrument, interest rate, stated percentage			4.75%
Debt instrument, interest rate, effective percentage					5.48%
Convertible preferred stock, shares issued upon conversion (in shares) | shares			19,600,000
Conversion ratio	176.2502				195.8336
Conversion price | $ / shares			$ 5.11		$ 1,000
Percentage of principal amount redeemed			100.00%
Issuance of Common Shares for Debt Conversion		$ 80,000,000
Denominator of principal amount of debt Used In Conversion		$ 1,000
Issuance of common stock due to debt conversion | shares		16,799,861
Convertible beneficial conversion feature (in shares) | shares		1,133,173
Induced conversion of convertible debt expense		$ 13,000,000
Senior notes	$ 20,000,000	$ 20,000,000
Interest on non-recourse debt					$ 3,500,000	5,500,000	5,500,000
Accelerated amortization of financing costs				$ 1,400,000
Amortization of debt issuance costs					$ 1,700,000	$ 700,000	$ 700,000