LINE OF CREDIT - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Mar. 29, 2016
Line of Credit Facility [Line Items]
Deferred financing costs	$ 90
Line of credit, net	7,036	$ 7,119
Line of credit facility amount available under line of credit	4,900
Interest expense	$ 892	600	$ 302
Prime Rate
Line of Credit Facility [Line Items]
Interest rate	4.25%
Heritage Bank Of Commerce
Line of Credit Facility [Line Items]
Principal amount of term loan	$ 7,100	7,200
Debt issuance costs	75
Line of credit, net	7,000
Line Of Credit
Line of Credit Facility [Line Items]
Interest expense	$ 434	260	$ 211
Revolving Credit Facility | Heritage Bank Of Commerce | Loan And Security Agreement
Line of Credit Facility [Line Items]
Maximum limit of amount under line of credit		$ 12,000		$ 12,000
Line of credit facility, basis of measurement		Federal Reserves' Prime
Percentage of interest rate above prime rate		2.25%