Consolidated Statements of Shareholders' Equity (Unaudited) - 9 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Series A Convertible Preferred stock	Common Stock	Accumulated Deficit	Total
Balance at Jun. 30, 2016	$ 3,138	$ 233,394	$ (181,507)	$ 55,025
Balance (in shares) at Jun. 30, 2016	445,063	37,783,444
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclass of fair value of warrant liability upon exercise of warrants		$ 5,229		5,229
Exercise of warrants		$ 6,193		6,193
Exercise of warrants (in shares)		2,401,408
Stock based compensation 2013 Stock Incentive Plan		$ 288		288
Stock based compensation 2013 Stock Incentive Plan (in shares)		149,356
Stock based compensation 2014 Stock Option Incentive Plan		$ 155		155
Stock based compensation 2015 Equity Incentive Plan		235		235
Retirement of common stock		$ (31)		(31)
Retirement of common stock (in shares)		(6,533)
Net loss			(2,095)	(2,095)
Balance at Mar. 31, 2017	$ 3,138	$ 245,463	$ (183,602)	$ 64,999
Balance (in shares) at Mar. 31, 2017	445,063	40,327,675