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Gain on Sale of Idle Property, Plant and Equipment - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended
	Nov. 30, 2013	Nov. 30, 2013
Gain (Loss) on Investments [Line Items]
Gain on sale of idle facilities	$ 162,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment	$ 162,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Fair Haven, Vermont [Member]
Gain (Loss) on Investments [Line Items]
Gain on sale of idle facilities	$ 162,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment / us-gaap_StatementGeographicalAxis = sky_FairHavenVermontMember

X

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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- Details

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- Details

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