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Reinsurance (Details Textual) (USD $) | 6 Months Ended
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Sep. 30, 2012
Reinsurance (Narrative) [Abstract] |
Insurance policies maximum coverage per claim | $ 300,000
Insurance policies coverage per claim ceded to reinsurers | 240,000
Insurance policy risk of loss maintained per claim | 60,000
Catastrophic losses recoverable in excess of amount | 1,000,000
Aggregate catastrophic losses recoverable in excess of amount | $ 10,000,000

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- Definition Catastrophic losses recoverable in aggregate greater than amount. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Catastrophic losses recoverable per occurrence greater than amount. + References No definition available. + Details
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Namespace Prefix: | cvco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Limited risk of loss per claim on typical policies amount. + References No definition available. + Details
Name: | cvco_LimitedRiskOfLossPerClaimOnTypicalPoliciesAmount
Namespace Prefix: | cvco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Maximum risk assumed per policy. + References No definition available. + Details
Name: | cvco_MaximumRiskAssumedPerPolicy
Namespace Prefix: | cvco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Maximum risk ceded per policy. + 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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- Details
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Namespace Prefix: | cvco_
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