FINANCIAL INFORMATION BY SEGMENT - Schedule of Financial Results for Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Sales	$ 256,184	$ 253,701
Operating income (loss)	18,916	21,555
Unallocated
Segment Reporting Information [Line Items]
Sales	0	0
Operating income (loss)		(7,063)
Intersegment Eliminations | NAI Segment to INI Segment
Segment Reporting Information [Line Items]
Sales	1,729	2,995
Intersegment Eliminations | GTM Segment to INI Segment
Segment Reporting Information [Line Items]
Sales	688	502
Intersegment Eliminations | INI Segment to NAI Segment
Segment Reporting Information [Line Items]
Sales	14,934	17,388
Intersegment Eliminations | GTM Segment to NAI Segment
Segment Reporting Information [Line Items]
Sales	1,290	1,431
North America Industrial | Operating Segments
Segment Reporting Information [Line Items]
Sales	90,291	84,186
Operating income (loss)		4,037
International Industrial | Operating Segments
Segment Reporting Information [Line Items]
Sales	100,872	108,250
Operating income (loss)		15,563
Global Test & Measurement | Operating Segments
Segment Reporting Information [Line Items]
Sales	$ 65,021	61,265
Operating income (loss)		$ 9,018