The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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The difference between the proceeds received and the carrying value of the long-lived asset. If the proceeds received exceeds the carrying value of the long-lived asset, then there is a gain. If the proceeds received is less than the carrying value of the long-lived asset, then there is a loss.

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- Definition

The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

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- Definition

Net total Increase or Decrease in the accrual for restructuring costs during the reporting period.

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Restructuring and Other Expense - Additional Information (Detail) (USD $)	9 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended
	Feb. 28, 2013	Feb. 28, 2013 Metal Framing	Feb. 28, 2013 Commercial Stairs	Feb. 28, 2013 Pressure Cylinders	Oct. 31, 2012 Pressure Cylinders	May 31, 2013 Scenario, Forecast	Feb. 28, 2013 Early Retirement And Severance	Feb. 28, 2013 Early Retirement And Severance Metal Framing	Feb. 28, 2013 Early Retirement And Severance Commercial Stairs	Feb. 28, 2013 Early Retirement And Severance Global Group
Restructuring Cost and Reserve [Line Items]
Facility exit and other costs incurred	$ 962,000		$ 1,624,000	$ 177,000
Severance expense adjustment	2,509,000						(254,000)	(264,000)	(94,000)	104,000
Cash proceeds from sale of assets for sale assets		5,637,000
Gain on sale of assets held for sale	1,886,000	1,886,000			50,000
Net charges in connection with the closure of business			1,530,000
Payment for restructuring	$ 3,345,000					$ 1,790,000	$ 1,756,000