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Gain on Sale of Idle Property, Plant and Equipment - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended
Feb. 28, 2014
Feb. 28, 2014
Nov. 30, 2013
Gain (Loss) on Investments [Line Items]      
Gain on sale of idle facilities $ 300,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment $ 462,000us-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
Halstead, Kansas [Member]      
Gain (Loss) on Investments [Line Items]      
Gain on sale of idle facilities $ 300,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment
/ us-gaap_StatementGeographicalAxis
= sky_HalsteadKansasMember