Long-term Debt and Credit Agreement (Details) (USD $)	Jan. 28, 2012	Jan. 29, 2011	Apr. 30, 2010
Debt Disclosure [Abstract]
Long-term Debt	$ 0	$ 0
Short-term Debt	0	0
Line of Credit Facility, Maximum Borrowing Capacity			$ 100,000,000

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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