WARRANTS - Private Placement Offering (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
	Mar. 29, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Mar. 17, 2011
Class of Warrant or Right [Line Items]
Warrants issued			2,200
Exercise price per share			$ 2.6058
Warrant liabilities			$ 3,739	$ 978
Non-cash interest and amortization of debt discount		$ 113	13
Stock purchase warrants | Private Placement Offering 2011 [Member]
Class of Warrant or Right [Line Items]
Warrants issued					4,300
Exercise price per share					$ 2.6058
Number of warrants exercisable					4,300
Warrant liabilities		$ 0	$ 3,700
Number of warrants exercised		2,400	1,900
Proceeds from issuance of common stock		$ 6,200	$ 4,900
Revolving Credit Facility | Heritage Bank Of Commerce | Loan And Security Agreement
Class of Warrant or Right [Line Items]
Warrants issued	24
Exercise price per share	$ 5.00
Maximum limit of amount under line of credit	$ 12,000		12,000
Fair value of warrants	$ 52
Non-cash interest and amortization of debt discount		$ 39	$ 13
Line Of Credit | Commercial Bank. | Loan And Security Agreement | Stock purchase warrants
Class of Warrant or Right [Line Items]
Warrants issued	45
Exercise price per share	$ 2.10
Fair value of warrants	$ 55