SIGNIFICANT ACCOUNTING POLICIES - Summary of Impact of New Accounting Guidance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jul. 01, 2018	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract asset	$ 236		$ 236				$ 0
Prepaid and other current assets	839		839				739
Total current assets	16,548		16,548				16,250
Total assets	34,035		34,035				33,231
Current contract liability	2,110		2,110				1,894
Total current liabilities	6,642		6,642				5,992
Contract liability, net of current portion	387		387				470
Total liabilities	8,496		8,496				8,057
Accumulated deficit	(1,995)		(1,995)				(2,057)
Total stockholders' equity	25,539	$ 25,219	25,539	$ 25,219	$ 26,552		25,174	$ 25,862	$ 25,287
Total liabilities and stockholders' equity	34,035		34,035				$ 33,231
Revenues	9,451	9,427	32,138	30,229
Cost of revenues	7,416	7,131	22,760	21,774
Gross profits	2,035	2,296	9,378	8,455
Selling, general and administrative	2,901	2,800	8,886	8,346
Operating income	(1,073)	(707)	(121)	(499)
Net loss	(1,125)	$ (757)	(276)	$ (526)
Balance Without Adoption
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract asset	0		0
Prepaid and other current assets	806		806
Total current assets	16,279		16,279
Total assets	33,766		33,766
Current contract liability	2,121		2,121
Total current liabilities	6,653		6,653
Contract liability, net of current portion	387		387
Total liabilities	8,507		8,507
Accumulated deficit	(2,275)		(2,275)
Total stockholders' equity	25,259		25,259
Total liabilities and stockholders' equity	33,766		33,766
Revenues	9,556		32,347
Cost of revenues	7,470		22,878
Gross profits	2,086		9,469
Selling, general and administrative	2,912		8,919
Operating income	(1,033)		(63)
Net loss	(1,085)		(218)
Accounting Standards Update 2014-09 | Adjustments
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract asset	(236)		(236)
Prepaid and other current assets	(33)		(33)
Total current assets	(269)		(269)
Total assets	(269)		(269)
Current contract liability	11		11
Total current liabilities	11		11
Contract liability, net of current portion	0		0
Total liabilities	11		11
Accumulated deficit	(280)		(280)			$ 300
Total stockholders' equity	(280)		(280)			$ 300
Total liabilities and stockholders' equity	(269)		(269)
Revenues	105		209
Cost of revenues	54		118
Gross profits	51		91
Selling, general and administrative	11		33
Operating income	40		58
Net loss	$ 40		$ 58