Summary of Financial Information by Reportable Segment and Product Line (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Segment Reporting [Line Items]
Net sales	$ 652,300	$ 616,900	$ 589,500
Cost of products sold	(331,100)	(305,100)	(288,500)
Gross profit	321,200	311,800	301,000
Selling, General and Administrative Expense	182,400	166,800	168,600
Intangible Asset, Finite-Lived, Amortization Expense	6,300	5,600	3,300
Restructuring charges	3,300	5,900	7,400
Impairment and divestiture (benefit) charges	0	0	100
Operating profit (loss)	129,200	133,500	121,600
Segment Reporting, Long-Lived Asset, Expenditure for Addition		19,300	11,400
Depreciation and amortization	17,500	15,700	13,300
Capital Expenditure	10,600	19,300	11,400
Assets	858,600	827,900
Service & Rental [Member]
Segment Reporting [Line Items]
Net sales	106,200	116,800	115,500
Cost of products sold	(79,000)	(77,400)	(75,700)
Products [Member]
Segment Reporting [Line Items]
Net sales	546,100	500,100	474,000
Cost of products sold	(252,100)	(227,700)	(212,800)
Industrial Tools & Services [Member] [Domain]
Segment Reporting [Line Items]
Net sales	626,500	595,800	571,100
Cost of products sold	(318,300)	(295,300)	(278,600)
Gross profit	308,100	300,500	292,600
Selling, General and Administrative Expense	135,200	128,700	129,400
Intangible Asset, Finite-Lived, Amortization Expense	6,100	5,400	3,300
Restructuring charges	3,300	2,500	6,800
Operating profit (loss)	$ 163,500	$ 163,900	$ 153,100
Operating profit (loss) % [Line Items]	26.10%	27.50%	26.80%
Segment Reporting, Long-Lived Asset, Expenditure for Addition	$ 8,100	$ 8,900	$ 6,100
Assets	691,700	672,100
Industrial Tools & Services [Member] [Domain] | Service & Rental [Member]
Segment Reporting [Line Items]
Net sales	106,200	116,800	115,500
Industrial Tools & Services [Member] [Domain] | Products [Member]
Segment Reporting [Line Items]
Net sales	520,300	479,000	455,600
Other Operating Segment [Member]
Segment Reporting [Line Items]
Net sales	25,800	21,100	18,400
Cost of products sold	(12,700)	(9,700)	(9,000)
Gross profit	13,200	11,400	9,300
Selling, General and Administrative Expense	5,900	5,400	5,000
Intangible Asset, Finite-Lived, Amortization Expense	0	0	0
Restructuring charges	0	0	0
Impairment and divestiture (benefit) charges	0	0	100
Operating profit (loss)	$ 7,300	$ 6,000	$ 4,200
Operating profit (loss) % [Line Items]	28.30%	28.40%	22.80%
Segment Reporting, Long-Lived Asset, Expenditure for Addition	$ 400	$ 400	$ 600
Assets	23,800	25,300
General Corporate
Segment Reporting [Line Items]
Cost of products sold	100	(100)	(900)
Gross profit	(100)	(100)	(900)
Selling, General and Administrative Expense	41,300	32,700	34,200
Intangible Asset, Finite-Lived, Amortization Expense	200	200	0
Restructuring charges	0	3,400	600
Operating profit (loss)	(41,600)	(36,400)	(35,700)
Segment Reporting, Long-Lived Asset, Expenditure for Addition	2,100	10,000	$ 4,700
Assets	$ 143,100	$ 130,500