Summary of Financial Information by Reportable Segment and Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021	Aug. 31, 2021
Segment Reporting Information [Line Items]
Net Sales	$ 136,599	$ 120,654	$ 267,502	$ 240,084
Operating Profit (Loss)	4,484	5,707	10,891	14,777
Assets	821,462		821,462		$ 820,247
Industrial Tools & Services [Member] [Domain]
Segment Reporting Information [Line Items]
Net Sales	125,940	112,739	247,253	224,914
Operating Profit (Loss)	12,582	13,857	30,646	31,014
Assets	656,199		656,199		641,256
Products [Member]
Segment Reporting Information [Line Items]
Net Sales	97,498	87,195	189,847	169,768
Service & Rental [Member]
Segment Reporting Information [Line Items]
Net Sales	28,442	25,544	57,406	55,146
Other Operating Segment [Member]
Segment Reporting Information [Line Items]
Net Sales	10,659	7,915	20,249	15,170
Operating Profit (Loss)	334	(1,873)	(923)	(3,682)
Assets	52,965		52,965		52,745
General Corporate
Segment Reporting Information [Line Items]
Operating Profit (Loss)	(8,432)	$ (6,277)	(18,832)	$ (12,555)
Assets	$ 112,298		$ 112,298		$ 126,246