1. THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	3 Months Ended			6 Months Ended		12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ 60,808,000			$ 60,808,000			$ 64,655,000
Provision for (benefit from) income taxes	49,000		$ (154,000)	130,000	$ 117,000
ASU 2016-16 | Adjustments for New Accounting Principle, Early Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prepaid tax asset	(595,000)			(595,000)
Retained earnings	(595,000)			(595,000)
Provision for (benefit from) income taxes	(11,000)	$ (11,000)
ASU 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net operating loss carryforwards	654,000			654,000
Valuation allowance	$ 654,000			$ 654,000
Forecast | ASU 2016-16 | Adjustments for New Accounting Principle, Early Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Provision for (benefit from) income taxes						$ (43,000)