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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Feb. 02, 2020	Feb. 03, 2019	Jan. 28, 2018
Catalog and advertising expenses	$ 93,900,000	$ 95,200,000	$ 88,600,000
Shipping and processing expenses	287,475,000	257,700,000	210,428,000
Inventory reserve for excess and obsolete items	1,800,000	2,400,000
Depreciation and amortization	22,083,000	12,594,000	7,330,000
Amortization expense of other assets	100,000	100,000	100,000
Accumulated amortization of other assets	500,000	400,000
Shipping and Handling [Member]
Shipping and processing expenses	31,300,000	31,400,000	28,100,000
Available-for-sale Securities [Member]
Amortized cost of available-for-sale security		6,300,000
Direct [Member]
Depreciation and amortization	10,884,000	4,560,000	2,855,000
Goodwill impairment loss	0	0	$ 0
Goodwill	$ 400,000	$ 400,000
Inventory Expenditures [Member] | Supplier One [Member]
Concentration risk, percentage	54.00%	52.00%	50.00%
Inventory Expenditures [Member] | Supplier Two [Member]
Concentration risk, percentage	12.00%	15.00%	18.00%
Minimum [Member]
Other assets amortization estimated useful life	3 years
Maximum [Member]
Other assets amortization estimated useful life	15 years
Unvested Restricted Stock [Member]
Stock compensation expense	$ 500,000	$ 1,600,000	$ 1,600,000
Unrecognized compensation expense	$ 2,000,000
Unrecognized compensation expense, weighted average recognition period	2 years 8 months 12 days
Unvested Restricted Stock [Member] | Board Members [Member]
Stock-based compensation, vesting period	1 year
Unvested Restricted Stock [Member] | Key Employees And Executives [Member] | Minimum [Member]
Stock-based compensation, vesting period	3 years
Unvested Restricted Stock [Member] | Key Employees And Executives [Member] | Maximum [Member]
Stock-based compensation, vesting period	5 years

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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