SEGMENTS (Reconciliation of Segment Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023
Corporate and Other
Revenues	$ 17,613	$ 17,906
Operating Loss	(6,397)	(3,617)
Total assets	64,146		$ 71,579
Operating Segments | Maintenance Segment
Corporate and Other
Revenues	3,754	4,054
Operating Loss	(1,840)	(290)
Total assets	8,250		10,372
Operating Segments | Electric Vehicle Charging Systems
Corporate and Other
Revenues	1,238
Operating Loss	(1,934)
Total assets	9,945		11,501
Operating Segments | Lighting Segment [Member]
Corporate and Other
Revenues	12,621	13,852
Operating Loss	(766)	(1,004)
Total assets	28,025		25,009
Corporate and Other
Corporate and Other
Revenues	0	0
Operating Loss	(1,857)	$ (2,323)
Total assets	$ 17,926		$ 24,697