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Statutory Reserves (Detail) - Subsidiaries [Member] - China [Member] $ in Millions | 3 Months Ended
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Jul. 31, 2016 USD ($)
Statutory Reserve [Line Items] |
Percentage of net income required to be transferred to a statutory surplus reserve fund | 10.00%
Maximum required percentage of statutory surplus reserve fund to registered capital | 50.00%
Statutory surplus reserve fund balance | $ 4.8
Percentage of accumulated earnings and profits determined in accordance with PRC accounting rules and regulations | 10.00%
Minimum threshold percentage for statutory surplus reserve fund as percentage of registered capital, below which certain capital transactions are prohibited | 25.00%

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- Definition The maximum percentage of registered capital required to be transferred to a statutory surplus reserve fund under foreign government accounting rules and regulations. Such transfers occur over time based on earnings until the cap is reached, if ever. + References No definition available. + Details
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Namespace Prefix: | cfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The minimum percentage of the statutory surplus reserve fund balance over registered capital, below which the fund cannot be used to fund previous years' losses, for business expansion, or converted into share capital by (a) issuing new shares to existing shareholders in proportion to their shareholding, or (b) increasing the par value of the shares currently held by them. + References No definition available. + Details
Name: | cfi_MinimumThresholdPercentageForStatutorySurplusReserveFundAsPercentageOfRegisteredCapitalBelowWhichCertainCapitalTransactionsAreProhibited
Namespace Prefix: | cfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The percentage of net income required to be transferred to a statutory surplus reserve fund under foreign accounting rules and regulations. + References No definition available. + Details
Name: | cfi_PercentageOfNetIncomeTransferredToStatutorySurplusReserveFund
Namespace Prefix: | cfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Statutory Reserve [Line Items] + References No definition available. + Details
Name: | cfi_StatutoryReserveLineItems
Namespace Prefix: | cfi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of the statutory surplus reserve fund balance as of the reporting date. The surplus reserve fund is non-distributable other than during liquidation and can be used to fund previous years' losses, if any, and may be utilized for business expansion or converted into share capital by issuing new shares to existing shareholders in proportion to their shareholding or by increasing the par value of the shares currently held by them provided that the remaining reserve balance after such issue is not less than 25% of the registered capital. + References No definition available. + Details
Name: | cfi_StatutorySurplusReserveFundBalance
Namespace Prefix: | cfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The statutory reserve fund balance as a percentage of accumulated earnings and profits determined in accordance with foreign government accounting rules and regulations. + References No definition available. + Details
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Namespace Prefix: | cfi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | dei_LegalEntityAxis=us-gaap_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementGeographicalAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |