Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring costs recorded in cost of products sold		$ 800		$ 800
Restructuring Reserve [Roll Forward]
Beginning Balance			$ 3,694	5,637
Restructuring Charges	$ 60	3,450	463	10,079
Restructuring Charges, including recorded in Cost of Product Sold		4,300		10,913
Cash payments			(1,463)	(6,699)
Other non-cash uses of reserve			(396)	(3,162)
Impact of changes in foreign currency rates			(46)	(72)
Ending Balance	2,252	6,617	2,252	6,617
Industrial Tools & Services [Member] [Domain]
Restructuring Reserve [Roll Forward]
Beginning Balance			1,687	1,499
Restructuring Charges			21
Restructuring Charges, including recorded in Cost of Product Sold				2,929
Cash payments			(1,052)	(1,750)
Other non-cash uses of reserve			(79)	(354)
Impact of changes in foreign currency rates			(18)	(6)
Ending Balance	559	2,318	559	2,318
Engineered Components & Systems [Member] [Domain]
Restructuring Reserve [Roll Forward]
Beginning Balance			1,592	4,108
Restructuring Charges			442
Restructuring Charges, including recorded in Cost of Product Sold				3,710
Cash payments			(314)	(3,301)
Other non-cash uses of reserve			53	(801)
Impact of changes in foreign currency rates			(28)	(66)
Ending Balance	1,745	3,650	1,745	3,650
General Corporate
Restructuring Reserve [Roll Forward]
Beginning Balance			415	30
Restructuring Charges			0
Restructuring Charges, including recorded in Cost of Product Sold				4,274
Cash payments			(97)	(1,648)
Other non-cash uses of reserve			(370)	(2,007)
Impact of changes in foreign currency rates			0	0
Ending Balance	$ (52)	$ 649	$ (52)	$ 649