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Commitments and Contingencies - Amounts of Obligations from Repurchased Units and Incurred Net Losses for Periods (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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May 31, 2014 Unit | May 31, 2013 Unit
Commitments And Contingencies Disclosure [Abstract] |  |
Number of units repurchased | 0 | 3
Obligations from units repurchased | $ 0 | $ 31
Net losses on repurchased units | $ 0 |

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- Definition Loss contingency obligation during period. + References No definition available. + Details
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Namespace Prefix: | sky_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Loss contingency obligation number of units repurchased during period. + References No definition available. + Details
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Namespace Prefix: | sky_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
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Balance Type: | debit
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