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Fair Value Measurements (Assets Measured at Fair Value on a Recurring Basis) (Details) (USD $) | 12 Months Ended |
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Mar. 30, 2013 | Dec. 29, 2012 Total [Member] Recurring [Member] Interest rate lock commitments [Member] | Dec. 29, 2012 Total [Member] Recurring [Member] Forward loan sale commitments [Member] | Dec. 29, 2012 Total [Member] Recurring [Member] Mortgage servicing rights [Member] | Dec. 29, 2012 Total [Member] Recurring [Member] Securities issued by the U.S Treasury and Government [Member] | Dec. 29, 2012 Total [Member] Recurring [Member] Mortgage-backed securities [Member] | Dec. 29, 2012 Total [Member] Recurring [Member] Securities issued by states and political subdivisions [Member] | Dec. 29, 2012 Total [Member] Recurring [Member] Corporate debt securities [Member] | Dec. 29, 2012 Total [Member] Recurring [Member] Marketable equity securities [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Interest rate lock commitments [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Forward loan sale commitments [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Mortgage servicing rights [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Securities issued by the U.S Treasury and Government [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Mortgage-backed securities [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Securities issued by states and political subdivisions [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Corporate debt securities [Member] | Dec. 29, 2012 Level 1 [Member] Recurring [Member] Marketable equity securities [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Interest rate lock commitments [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Forward loan sale commitments [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Mortgage servicing rights [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Securities issued by the U.S Treasury and Government [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Mortgage-backed securities [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Securities issued by states and political subdivisions [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Corporate debt securities [Member] | Dec. 29, 2012 Level 2 [Member] Recurring [Member] Marketable equity securities [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Interest rate lock commitments [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Forward loan sale commitments [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Mortgage servicing rights [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Securities issued by the U.S Treasury and Government [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Mortgage-backed securities [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Securities issued by states and political subdivisions [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Corporate debt securities [Member] | Dec. 29, 2012 Level 3 [Member] Recurring [Member] Marketable equity securities [Member]
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets fair value |  | $ 28,000 | [1] | $ (3,000) | [1] | $ 335,000 | [2] | $ 2,687,000 | [3] | $ 5,139,000 | [3] | $ 1,713,000 | [3] | $ 2,836,000 | [3] | $ 5,323,000 | [3] | $ 0 | [1] | $ 0 | [1] | $ 0 | [2] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 5,323,000 | [3] | $ 0 | [1] | $ 0 | [1] | $ 0 | [2] | $ 2,687,000 | [3] | $ 5,139,000 | [3] | $ 1,713,000 | [3] | $ 2,836,000 | [3] | $ 0 | [3] | $ 28,000 | [1] | $ (3,000) | [1] | $ 335,000 | [2] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3] | $ 0 | [3]
Fair Value, Assets, Level 1, Level 2, or Level 3 Transfers, Amount | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Gains or losses on derivatives are recognized in current period earnings through cost of sales.
[2] | Changes in the fair value of mortgage servicing rights are recognized in the current period earnings through net revenue.
[3] | Unrealized gains or losses on investments are recorded in accumulated other comprehensive income (loss) at each measurement date.

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- Definition Fair Value, Assets, Level 1, Level 2, or Level 3 Transfers, Amount + References No definition available. + Details
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Namespace Prefix: | cvco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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