Consolidated Statements of Shareholders' Equity (Unaudited) - 3 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Series A Convertible Preferred stock	Common Stock	Accumulated Deficit	Total
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in relation to public offering, net of offering costs incurred of $3,237		$ 39,888		39,888
Issuance of common stock in relation to public offering, net of offering costs incurred of $3,237 (in shares)		9,583,332
Stock based compensation		$ 576		576
Stock based compensation (in shares)		279,754
Excess tax benefit from stock plans(b)			67	67
Net loss			(213)	(213)
Balance at Sep. 30, 2017	$ 3,138	$ 286,463	$ (183,505)	$ 106,096
Balance (in shares) at Sep. 30, 2017	445,063	50,194,731