Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income (loss) before income taxes	$ (11,754,000)	$ (13,459,000)
Effective income tax rate	0.00%
Current state tax expense	$ 2,000	4,000
Uncertain tax benefit reserve	$ 0	$ 0
Federal statutory effective tax rate	35.00%	35.00%
Valuation allowance	$ 22,200,000
Change in valuation allowance	4,200,000
Net losses carryforwards used for Federal income tax purposes	56,900,000
Federal income tax effected	19,300,000
Accumulated state net operating loss carryforwards	26,200,000
State income tax effected	1,100,000
Temporary credit loss carryovers	500,000
Temporary credit tax effected	300,000
Temporary credit offset	13,000
Alternative minimum tax carryforwards	900,000
Uncertain tax benefit reserve	$ 0	$ 76,000