Debt - Narrative (Details)			1 Months Ended	3 Months Ended			4 Months Ended	5 Months Ended	12 Months Ended
	Mar. 11, 2020 USD ($)	Jan. 14, 2020	Dec. 31, 2020 USD ($)	Jan. 30, 2022 USD ($)	Oct. 31, 2021 USD ($)	Aug. 01, 2021 USD ($)	Aug. 02, 2020 USD ($)	Aug. 02, 2020 USD ($)	Nov. 01, 2020 USD ($)	Nov. 03, 2019 USD ($)	Jun. 11, 2020 USD ($)	Jun. 10, 2020 USD ($)	Jul. 19, 2019 USD ($)	Jan. 25, 2019 USD ($)
Extinguishment of Debt [Line Items]
Approximate weekly employee compensation, payroll taxes and payments to vendors									$ 15,000,000.0
Deferred employer payroll taxes									$ 20,500,000
Proportion of deferred employer payroll taxes due next year (as a percent)									50.00%
Proportion of deferred employer payroll taxes due in second year after current (as a percent)									50.00%
COVID 19 Pandemic
Extinguishment of Debt [Line Items]
Weekly reduction to payroll and related tax payments							$ 3,000,000.0
DZ Financing Program
Extinguishment of Debt [Line Items]
Covenant, minimum tangible net worth through fiscal quarter ending July 31, 2021 (at least)	$ 40,000,000.0							$ 35,000,000.0	$ 20,000,000.0
Covenant, minimum tangible net worth through fiscal quarter ending October 31, 2021									25,000,000.0
Covenant, minimum tangible net worth thereafter									$ 40,000,000.0
Transferors Interests In Transferred Financial Assets, Maximum Investment Limit											$ 100,000,000.0	$ 115,000,000.0
Covenant, maximum debt to tangible net worth ratio									3
Covenant, minimum liquid assets									$ 15,000,000.0
Borrowing availability									2,800,000
Long-term debt									$ 60,000,000.0	$ 55,000,000.0
Weighted average annual interest rate during period									2.60%	4.10%
Eligibility threshold for receivables of large customers (as a percent)									5.00%
DZ Financing Program | Subsequent Event
Extinguishment of Debt [Line Items]
Eligibility threshold for receivables of large customers (as a percent)			8.00%
DZ Financing Program | Forecast
Extinguishment of Debt [Line Items]
Covenant, minimum tangible net worth through fiscal quarter ending July 31, 2021 (at least)						$ 20,000,000.0
Covenant, minimum tangible net worth through fiscal quarter ending October 31, 2021					$ 25,000,000.0
Covenant, minimum tangible net worth thereafter				$ 40,000,000.0	$ 40,000,000.0	$ 40,000,000.0
DZ Financing Program | Letter of Credit, Security Deposit
Extinguishment of Debt [Line Items]
Fair value of amount outstanding									$ 1,200,000
DZ Financing Program | Letter of Credit
Extinguishment of Debt [Line Items]
Current borrowing capacity														$ 35,000,000.0
Fair value of amount outstanding									24,500,000
DZ Financing Program | Letter of Credit | Short Term Financing Program
Extinguishment of Debt [Line Items]
Fair value of amount outstanding									$ 23,300,000
DZ Financing Program | Federal Funds Rate | Letter of Credit
Extinguishment of Debt [Line Items]
Basis spread on variable rate (as a percent)		3.00%
DZ Financing Program | Prime Rate | Letter of Credit
Extinguishment of Debt [Line Items]
Basis spread on variable rate (as a percent)		2.50%
Minimum
Extinguishment of Debt [Line Items]
Target liquidity ratio									1.5
Minimum | DZ Financing Program
Extinguishment of Debt [Line Items]
Additional borrowing capacity of facility													$ 5,000,000.0
Minimum | DZ Financing Program | Subsequent Event
Extinguishment of Debt [Line Items]
Increase (decrease) in borrowing capacity			$ 1,000,000.0
Maximum | DZ Financing Program
Extinguishment of Debt [Line Items]
Additional borrowing capacity of facility													$ 7,000,000.0
Maximum | DZ Financing Program | Subsequent Event
Extinguishment of Debt [Line Items]
Increase (decrease) in borrowing capacity			$ 3,000,000.0