INVESTMENT IN AFFILIATES: (Details) - Empire Education Group Inc - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Investment in affiliates
Ownership percentage	54.60%		54.60%
Investment value	$ 0		$ 0
(Unaudited)
Gross revenues	32,962,000	$ 31,019,000	65,599,000	$ 61,055,000
Gross profit	9,720,000	9,168,000	19,398,000	17,278,000
Operating income (loss)	1,053,000	488,000	861,000	(219,000)
Net income (loss)	$ 1,034,000	$ 357,000	$ 690,000	$ (472,000)