Leases (Expense Components Leases Reflected Consolidated Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 02, 2020	Aug. 04, 2019	Aug. 02, 2020	Aug. 04, 2019
Total finance lease expense	$ 1,343	$ 760	$ 2,438	$ 1,060
Total lease expense	11,739	6,674	19,055	12,350
Selling, General and Administrative Expenses [Member]
Finance lease: Amortization of right-of-use assets	908	451	1,565	626
Operating lease expense	4,495	3,609	8,631	7,159
Amortization of build-to-suit leases capital contribution	3,624	265	3,948	479
Variable lease expense	2,277	2,040	4,038	3,652
Interest Expense [Member]
Finance lease: Interest on lease liabilities	$ 435	$ 309	$ 873	$ 434