Weighted Average Option Rollforward - (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
	Aug. 03, 2013	Aug. 03, 2013	Feb. 02, 2013
shareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward
Options Outstanding	27,177	27,177	9,550
Amount of Vested Exercisable Options	7,050	7,050
Stock Options [Member]
shareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward
Granted		20,127
Forfeited or expired		0
Exercised		(2,500)
Weighted Average Exercise Price for Vested and Exercisable Options	$ 13.25	$ 13.25
Weighted Average Remaining Contractual Term for Vested and Exercisable Options	0 years 8 months 12 days
Weighted Average Exercise Price Granted		$ 23.57
Average Intrinsic Value for Vested and Exercisable Options	$ 88,046	$ 88,046
Weighted Average Contractual Term for Options Outstanding	7 years 4 months 24 days		2 years 1 month 6 days
Average Intrinsic Value for Options Outstanding	$ 131,922	$ 131,922	$ 136,185
Weighted Average Exercise Price Exercised		$ 14.09
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward
Options Outstanding		$ 13.47
Options Outstanding	$ 20.89	$ 20.89	$ 13.47