Income Taxes - Reconciliation of Statutory Tax Rates and Effective Tax Rates (Details)	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Statutory rate	(28.00%)	(34.00%)	(34.00%)
Foreign income tax	(0.00%)	(0.00%)	(0.00%)
Change in valuation allowance	21.10%	21.90%	30.40%
State income taxes, (net of federal tax benefit)	(4.30%)	(4.80%)	(2.80%)
Permanent differences, (primarily warrant-related expenses)	11.30%	15.30%	(0.00%)
Other	(0.00%)	1.60%	(1.60%)
Effective rate	0.10%	(0.00%)	(8.00%)

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

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-Name Accounting Standards Codification
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

+ References

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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