Debt (Details)		1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 16, 2020 USD ($)	Mar. 31, 2020 USD ($)	Oct. 31, 2018 USD ($)	Aug. 01, 2020 USD ($) day	Aug. 03, 2019 USD ($) day	Aug. 01, 2020 USD ($) day	Aug. 03, 2019 USD ($) day	Feb. 01, 2020 USD ($) day
Line of Credit Facility [Line Items]
Proceeds under credit facilities						$ 115,918,000	$ 0
Number of days where borrowings incurred against facilities | day				39	91	97	182	331
Average outstanding amount				$ 50,000,000.0	$ 21,700,000	$ 43,300,000	$ 26,300,000	$ 21,500,000
Maximum amount outstanding during period				$ 50,000,000.0	$ 26,000,000.0	$ 50,000,000.0	$ 35,000,000.0	$ 38,000,000.0
Interest rate during period				3.94%	3.91%	3.45%	3.95%	3.73%
Bank of America LOC
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 50,000,000.0
Regions LOC
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 50,000,000.0
Regions LOC | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.50%
Bank of America and Regions LOCs
Line of Credit Facility [Line Items]
Proceeds under credit facilities		$ 50,000,000.0
Amended Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 75,000,000.0			$ 75,000,000.0		$ 75,000,000.0
Proceeds under credit facilities	50,000,000.0
Debt issuance costs	50,000
Minimum inventory requirement	$ 150,000,000.0
Amended Credit Facility | London Interbank Offered Rate (LIBOR) | April 16, 2020 through October 16, 2020
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%
Amended Credit Facility | London Interbank Offered Rate (LIBOR) | October 17, 2020 through Maturity
Line of Credit Facility [Line Items]
Basis spread on variable rate	3.00%