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Note Receivable - Additional Information (Detail) (USD $)
6 Months Ended 12 Months Ended
Nov. 30, 2014
Facility
May 31, 2013
Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Number of idle facilities sold 2sky_NumberOfIdleFacilitiesSold  
Note receivables less principal payments received $ 1,606,000us-gaap_AccountsAndNotesReceivableNet  
Hemet California [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Number of idle facilities sold   2sky_NumberOfIdleFacilitiesSold
/ us-gaap_StatementGeographicalAxis
= sky_HemetCaliforniaMember
Note receivable from sale of idle property, plant and equipment   $ 1,700,000us-gaap_ProceedsFromSaleAndCollectionOfNotesReceivable
/ us-gaap_StatementGeographicalAxis
= sky_HemetCaliforniaMember
Note receivable interest rate   6.00%us-gaap_ReceivableWithImputedInterestEffectiveYieldInterestRate
/ us-gaap_StatementGeographicalAxis
= sky_HemetCaliforniaMember
Facilities collateral for note   2sky_NumberOfFacilitiesCollateralForNoteReceivable
/ us-gaap_StatementGeographicalAxis
= sky_HemetCaliforniaMember
Note receivable interest amortization period   20 years
Note receivable final payment period   6 years