SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 12,568	$ 10,414	$ 14,565	$ 13,599	$ 12,174	$ 9,451	$ 12,394	$ 10,293	$ 51,146	$ 44,312	$ 40,141
Gross profit	4,183	2,223	4,872	4,484	3,892	2,035	3,991	3,352	15,762	13,270	11,402
Operating income (loss)	651	(1,578)	1,069	768	568	(1,073)	827	125	910	447	(577)
Net income (loss)	$ 2,166	$ (1,556)	$ 970	$ 686	$ 490	$ (1,125)	$ 779	$ 70	$ 2,266	$ 214	$ (672)
Net income (loss) per share - basic and diluted (in dollars per share)	$ 0.13	$ (0.10)	$ 0.06	$ 0.04	$ 0.03	$ (0.07)	$ 0.05	$ 0.00	$ 0.14	$ 0.01	$ (0.04)
Weighted average shares - diluted (in shares)	16,791	16,264	16,303	16,168	16,150	16,138	16,106	16,089	16,431	16,123	16,055