COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Details) (Narrative) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Jun. 30, 2019
Aggregate cost	$ 5,050	$ 5,050	$ 3,780
Net unrealized gains (losses)	705	100	(549)
Gross unrealized losses		329
Gross unrealized gains		229
Marketable equity securities	3,540	3,540	2,649
Air T, Inc. [Member]
Marketable equity securities	$ 1,410	$ 1,410	$ 938