Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Series A Convertible Preferred Stock Conversion of preferred stock	Common Stock	Accumulated Deficit	Total
Balance at Jun. 30, 2014	$ 3,138	$ 224,210	$ (173,612)	$ 53,736
Balance (in shares) at Jun. 30, 2014	445,063	35,602,123
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation		$ 716		716
Stock based compensation (in shares)		193,439
Retirement of common stock		$ (62)		(62)
Retirement of common stock (in shares)		(31,899)
Excess tax benefits from stock-based compensation		$ 10		10
Net loss			(1,089)	(1,089)
Balance at Jun. 30, 2015	$ 3,138	$ 224,874	(174,701)	53,311
Balance (in shares) at Jun. 30, 2015	445,063	35,763,663
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Warrants issued in conjunction with Line of Credit Agreement		$ 52		52
Fair value of exercised warrant liability		2,914		2,914
Exercise of warrants		$ 4,918		4,918
Exercise of warrants (in shares)		1,887,325
Stock based compensation		$ 849		849
Stock based compensation (in shares)		184,992
Retirement of common stock		$ (213)		(213)
Retirement of common stock (in shares)		(52,536)
Net loss			(6,806)	(6,806)
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]
Fair value of exercised warrant liability		$ 5,229		5,229
Exercise of warrants		$ 6,193		6,193
Exercise of warrants (in shares)		2,401,408
Stock based compensation		$ 1,214		1,214
Stock based compensation (in shares)		153,326
Retirement of common stock		$ (31)		(31)
Retirement of common stock (in shares)		(6,533)
Net loss			(1,852)	(1,852)
Balance at Jun. 30, 2017	$ 3,138	$ 245,999	$ (183,359)	$ 65,778
Balance (in shares) at Jun. 30, 2017	445,063	40,331,645