Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Land Buildings And Improvements Gross	$ 37,263	$ 34,788
Machinery and Equipment, Gross	84,258	93,036
Transportation Equipment Gross	40,606	48,999
Office Equipment and Capitalized Computer Software Gross	38,178	43,823
Construction in progress	84	1,646
Property, Plant and Equipment, Gross	200,389	222,292
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(152,844)	(168,423)
Property, plant and equipment, net	47,545	53,869
Long-Lived Assets	138,248	153,381	$ 176,337
Proceeds from asset sales (Note 3)	6,466	39,018	2,090
Gain (Loss) on Disposition of Property Plant Equipment	2,841	33,114	1,201
Proceeds from Divestiture of Businesses	6,300
Holdback receivable	400
Industrial Cleaning [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment	2,900
Orange California Facility
Property, Plant and Equipment [Line Items]
Proceeds from asset sales (Note 3)		37,400
Gain (Loss) on Disposition of Property Plant Equipment		$ 32,400
Property, Plant and Equipment, Useful Life		24 months
Burlington Office [Member]
Property, Plant and Equipment [Line Items]
Proceeds from asset sales (Note 3)	2,900
Gain (Loss) on Disposition of Property Plant Equipment	2,700
UNITED STATES
Property, Plant and Equipment [Line Items]
Long-Lived Assets	122,398	$ 137,682	157,442
CANADA
Property, Plant and Equipment [Line Items]
Long-Lived Assets	3,988	3,436	6,523
International [Member]
Property, Plant and Equipment [Line Items]
Long-Lived Assets	$ 11,862	$ 12,263	$ 12,372