Basis of Presentation and Summary of Significant Accounting Policies - Supplemental Cash Flow Disclosures (Details) (USD $)	3 Months Ended
	May 04, 2013	Apr. 28, 2012
Supplemental disclosure of cash flow information:
Cash paid for interest, including capital leases	$ 589,000	$ 193,000
Cash paid for income taxes, excluding impact of refunds	43,911,000	40,570,000
Non-cash activity:
Accrued property and equipment	8,473,000	9,909,000
Share repurchases payable	0	36,395,000
Proceeds from Long-term Lines of Credit	297,500,000	83,600,000
Repayments of Long-term Lines of Credit	$ 331,500,000	$ 149,500,000