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MAJOR CUSTOMERS AND SUPPLIERS (Sales) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Concentration Risk [Line Items]
Net sales	$ 8,508	$ 6,854	$ 23,710	$ 20,168
Total gross accounts receivable	$ 4,176		$ 4,176		$ 4,100
Percentage of concentrations risk	100.00%	100.00%	100.00%	100.00%	100.00%
Total accounts payable	$ 1,912		$ 1,912		$ 1,996
Sales [Member]
Concentration Risk [Line Items]
Net sales	$ 8,138	$ 6,098	$ 19,898	$ 15,157
Percentage of concentrations risk	96.00%	89.00%	84.00%	75.00%
Sales [Member] \| Customer 1 [Member]
Concentration Risk [Line Items]
Net sales	$ 5,373	$ 4,116	$ 16,440	$ 12,566
Percentage of concentrations risk	63.00%	60.00%	69.00%	62.00%
Sales [Member] \| Customer 2 [Member]
Concentration Risk [Line Items]
Net sales	$ 2,337	$ 1,077	$ 3,458	$ 2,601
Percentage of concentrations risk	28.00%	16.00%	15.00%	13.00%
Sales [Member] \| Customer 3 [Member]
Concentration Risk [Line Items]
Net sales	$ 428	$ 905
Percentage of concentrations risk	5.00%	13.00%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Total gross accounts receivable	$ 3,747		$ 3,747		$ 3,367
Percentage of concentrations risk			89.00%		82.00%
Accounts Receivable [Member] \| Customer 1 [Member]
Concentration Risk [Line Items]
Total gross accounts receivable	1,772		$ 1,772		$ 2,587
Percentage of concentrations risk			42.00%		63.00%
Accounts Receivable [Member] \| Customer 3 [Member]
Concentration Risk [Line Items]
Total gross accounts receivable	1,975		$ 1,975		$ 780
Percentage of concentrations risk			47.00%		19.00%
Accounts Payable [Member]
Concentration Risk [Line Items]
Percentage of concentrations risk			25.00%		41.00%
Total accounts payable	479		$ 479		$ 819
Accounts Payable [Member] \| Portescap [Member]
Concentration Risk [Line Items]
Percentage of concentrations risk			7.00%		19.00%
Total accounts payable	133		$ 133		$ 373
Accounts Payable [Member] \| Fischer Connectors Inc. [Member]
Concentration Risk [Line Items]
Percentage of concentrations risk			10.00%		15.00%
Total accounts payable	183		$ 183		$ 304
Accounts Payable [Member] \| Tadiran Batteries [Member]
Concentration Risk [Line Items]
Percentage of concentrations risk			8.00%		7.00%
Total accounts payable	$ 163		$ 163		$ 142