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Warranties (Narrative) (Details) | 6 Months Ended
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Sep. 30, 2017
Product Warranties Disclosures [Abstract] |
Warranties against manufacturing defects | 1 year

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- Definition Standard Product Warranty Term + References No definition available. + Details
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Namespace Prefix: | cvco_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_ProductWarrantiesDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration