Carrying Values and Fair Values of Financial Instruments Not Carried at Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Jan. 30, 2015	May 02, 2014	Jan. 31, 2014	May 01, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	$ 511,138	$ 509,850	$ 515,000
Level 2 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	511,138	515,000		509,850
Level 2 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including short-term portion	$ 491,331	$ 515,000		$ 502,840