7. Earnings Per Share (Detail)	3 Months Ended	9 Months Ended
	Oct. 30, 2011	Oct. 30, 2011	Jan. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		36-month
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	10,684
Share-based Compensation by Share-based Payments, Unvested Restricted Stock Outstanding, Net	42,479	42,479	20,630