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Other Assets - Additional Information (Detail) - USD ($)	Dec. 04, 2017	Dec. 03, 2017	May 31, 2017
Other Assets [Line Items]
Cash surrender value of life insurance		$ 7,129,000	$ 7,093,000
Subsequent Event [Member]
Other Assets [Line Items]
Surrender value of cancelled life insurance policies	$ 2,546,000

X

- Definition

Cash surrender value of cancelled life insurance.

+ References

No definition available.

+ Details

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Namespace Prefix:	sky_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Other Assets [Line Items]

+ References

No definition available.

+ Details

Name:	sky_OtherAssetsLineItems
Namespace Prefix:	sky_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Namespace Prefix:
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Balance Type:
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