SIGNIFICANT ACCOUNTING POLICIES - Summary of Impact of New Accounting Guidance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2018	Jul. 01, 2018	Jun. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract asset	$ 250		$ 250		$ 0
Prepaid and other current assets	717		717		739
Total current assets	19,096		19,096		16,250
Contract asset, net of current portion	37		37		0
Total assets	35,620		35,620		33,231
Current contract liability	2,132		2,132		1,894
Total current liabilities	7,255		7,255		5,992
Contract liability, net of current portion	337		337		470
Total liabilities	9,068		9,068		8,057
Accumulated deficit	(870)		(870)		(2,057)
Total stockholders' equity	26,552		26,552		25,174		$ 25,287
Total liabilities and stockholders' equity	35,620		35,620		33,231
Revenues	12,394	$ 11,119	22,687	$ 20,802
Cost of revenues	8,403	7,988	15,344	14,643
Gross profits	3,991	3,131	7,343	6,159
Selling, general and administrative	2,959	2,821	5,985	5,546
Operating income	827	107	952	208
Net income	779	$ 156	849	$ 231	$ (672)
Balance Without Adoption
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract asset	0		0
Prepaid and other current assets	695		695
Total current assets	18,824		18,824
Contract asset, net of current portion	0		0
Total assets	35,311		35,311
Current contract liability	2,143		2,143
Total current liabilities	7,266		7,266
Contract liability, net of current portion	337		337
Total liabilities	9,079		9,079
Accumulated deficit	(1,190)		(1,190)
Total stockholders' equity	26,232		26,232
Total liabilities and stockholders' equity	35,311		35,311
Revenues	12,463		22,791
Cost of revenues	8,430		15,408
Gross profits	4,033		7,383
Selling, general and administrative	2,968		6,007
Operating income	860		970
Net income	812		867
Accounting Standards Update 2014-09 | Adjustments
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Current contract asset	(250)		(250)
Prepaid and other current assets	(22)		(22)
Total current assets	(272)		(272)
Contract asset, net of current portion	(37)		(37)
Total assets	(309)		(309)
Current contract liability	11		11
Total current liabilities	11		11
Contract liability, net of current portion	0		0
Total liabilities	11		11
Accumulated deficit	(320)		(320)			$ 300
Total stockholders' equity	(320)		(320)			$ 300
Total liabilities and stockholders' equity	(309)		(309)
Revenues	69		104
Cost of revenues	27		64
Gross profits	42		40
Selling, general and administrative	9		22
Operating income	33		18
Net income	$ 33		$ 18