Supplemental Cash Flow Data (Details) - USD ($) $ in Thousands			1 Months Ended		3 Months Ended	12 Months Ended
	Aug. 04, 2022	Feb. 05, 2021	Aug. 31, 2020	Apr. 30, 2020	May 31, 2020	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020	Sep. 01, 2020
Supplemental Cash Flow Data
Income taxes paid						$ 15,017	$ 17,074	$ 11,186
Interest paid						282	245	230
Common stock received for payment of stock option exercises						40	206	123
Property, plant and equipment additions included in accounts payable						146	256	92
Acquisition of certain assets
Goodwill			$ 82,402			$ 95,160	97,866	82,402
Payments for acquisitions							(31,238)
Sale of business
Gain on sale of real estate								(2,551)
Randolph MA
Sale of business
Asset held for sale			(14)					(14)
Gain on sale of real estate			(1,791)					(1,791)
Cash proceeds			1,805					1,805
Pawtucket, RI manufacturing facility
Sale of business
Asset held for sale			$ (1,050)					(1,050)
Gain on sale of real estate				$ (760)				(760)
Cash proceeds				$ 1,810	$ 1,810			$ 1,810
Emerging Technologies
Acquisition of certain assets
Accounts receivable							481
Inventory							919
Prepaid expenses and other current assets							8
Property, plant and equipment							7
Goodwill		$ 2,451					2,451
Intangible assets							6,650
Accounts payable and accrued expenses							(519)
Other liabilities (due to sellers)		(1,000)					(1,000)
Payments for acquisitions	$ (1,000)	$ (8,997)					(8,997)
ABchime
Acquisition of certain assets
Accounts receivable							697
Inventory							239
Prepaid expenses and other current assets							696
Property, plant and equipment							245
Goodwill							13,055		$ 13,055
Intangible assets							12,055
Operating lease right-of-use asset							473
Deferred tax liability							(3,387)
Accounts payable and accrued expenses							(431)
Operating lease liabilities (inclusive of short- and long-term)							(473)
Other liabilities (due to sellers)							(928)
Payments for acquisitions							$ (22,241)