COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Details) (Narrative) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Mar. 31, 2019	Jun. 30, 2018
Aggregate cost	$ 3,364	$ 2,373
Net unrealized gains (losses)		(153)
Gross unrealized losses	316	196
Gross unrealized gains		43
Marketable equity securities	2,814	2,220
Air T, Inc. [Member]
Marketable equity securities	$ 997	$ 285

Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant