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Stock-Based Compensation - Other Share-Based Arrangements (Detail) (Stock Appreciation Rights (SARs) [Member], USD $) | 3 Months Ended
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Jul. 29, 2012 | Jul. 31, 2011
Stock Appreciation Rights (SARs) [Member] |  |
Share-based Goods and Nonemployee Services Transaction [Line Items] |  |
Agreement date | May 02, 2011 |
Number of shares indexed | 70,000 |
Cash settlement | $ 35,000 |
Stock appreciation right value | 700,000 |
Closing price of common stock at the date of grant | $ 10 |
Ceiling price of common stock under stock appreciation right award | $ 12 |
Vesting description | Vests over the period May 2, 2011 through June 30, 2012 as this represents the non-employee’s required service period |
Payment for fully vested award at fair value | 174,000 |
Compensation expense | $ 40,000 | $ 8,000

X
- Definition Description of the non-employee's required service period to receive benefits, if any, under of a stock appreciation rights award. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
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X
- Definition The amount of expense reported during the period resulting from stock appreciation rights awarded to a non-employee. + References No definition available. + Details
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X
- Definition The number of entity's shares indexed to a stock appreciation right for a specific period of time. + References No definition available. + Details
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- Definition The closing price per share of the indexed shares associated with a stock appreciation right award, above which market price appreciation will inure to the benefit of the rights holder. + References No definition available. + Details
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X
- Definition The aggregate base value of the indexed shares associated with a stock appreciation right award, determined by applying the closing price per indexed share on the award date, above which market price appreciation will inure to the benefit of the rights holder. + References No definition available. + Details
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- Definition The agreed upon price per indexed share used in determining the maximum amount of benefit that will inure to the holder of stock appreciation rights. + References No definition available. + Details
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Namespace Prefix: | cfi_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The fair value amount the entity paid to a non-employee when the terms of an award of stock appreciation rights were fully satisfied. + References No definition available. + Details
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Namespace Prefix: | cfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount the entity agreed to pay to the holder of stock appreciation rights, regardless of the market price of the entity's stock. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition The date on which stock appreciation rights were awarded to non-employees. + References No definition available. + Details
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- Details
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