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Reinsurance (Details Textual) | 6 Months Ended
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Sep. 30, 2017 USD ($)
Insurance [Abstract] |
Insurance policies maximum coverage per claim | $ 300,000
Insurance policies coverage per claim ceded to reinsurers | 200,000
Insurance policy risk of loss maintained per claim | 100,000
Catastrophic losses recoverable in excess of amount | 1,500,000
Aggregate catastrophic losses recoverable in excess of amount | $ 43,500,000

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- Definition Catastrophic losses recoverable in aggregate greater than amount. + References No definition available. + Details
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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
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- Definition Limited risk of loss per claim on typical policies amount. + References No definition available. + Details
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Namespace Prefix: | cvco_
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- Definition Maximum risk assumed per policy. + References No definition available. + Details
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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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Balance Type: | debit
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- References No definition available. + Details
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