CONTRACT ASSETS AND LIABILITIES - Costs, Earnings, Billings, Uncompleted Contracts - (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Regulated Operations [Abstract]
Costs incurred on uncompleted contracts	$ 397	$ 295
Estimated earnings	496	568
Costs and estimated earnings on uncompleted contracts	893	863
Less: Billings to date	(878)	(878)
Total Contract Assets (Liabilities)	$ 15	$ (15)