Summary of Financial Information by Reportable Segment and Product Line (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Aug. 31, 2021
Segment Reporting Information [Line Items]
Net Sales	$ 130,903	$ 119,430
Operating Profit (Loss)	6,407	9,069
Assets	812,468		$ 820,247
Industrial Tools & Services [Member] [Domain]
Segment Reporting Information [Line Items]
Net Sales	121,313	112,175
Operating Profit (Loss)	18,064	17,157
Assets	644,138		641,256
Products [Member]
Segment Reporting Information [Line Items]
Net Sales	92,350	82,573
Service & Rental [Member]
Segment Reporting Information [Line Items]
Net Sales	28,963	29,602
Other Operating Segment [Member]
Segment Reporting Information [Line Items]
Net Sales	9,590	7,255
Operating Profit (Loss)	(1,257)	(1,809)
Assets	52,524		52,745
General Corporate
Segment Reporting Information [Line Items]
Operating Profit (Loss)	(10,400)	$ (6,279)
Assets	$ 115,806		$ 126,246