Debt - Narrative (Details)		1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jan. 03, 2022 USD ($)	Dec. 31, 2020 USD ($)	Oct. 31, 2021 USD ($)	Jul. 31, 2021 USD ($)	Oct. 31, 2021 USD ($)	Nov. 01, 2020 USD ($)	Nov. 30, 2020	Jun. 30, 2020 USD ($)	May 31, 2020 USD ($)	Jul. 31, 2019 USD ($)
Extinguishment of Debt [Line Items]
Deferred employer payroll taxes related to the CARES Act			$ 26,200,000		$ 26,200,000
DZ Financing Program
Extinguishment of Debt [Line Items]
Transferors interests in transferred financial assets, maximum investment limit								$ 100,000,000	$ 115,000,000
Covenant, minimum tangible net worth through fiscal quarter ending July 31, 2021 (at least)				$ 20,000,000
Covenant, minimum tangible net worth, each quarter thereafter			25,000,000
Eligibility threshold for receivables of large customers (as a percent)		8.00%					5.00%
Covenant, maximum debt to tangible net worth ratio					3
Covenant, minimum liquid assets			15,000,000		$ 15,000,000
Borrowing availability			6,000,000		6,000,000
Long-term debt			60,000,000		$ 60,000,000	$ 60,000,000
Weighted average annual interest rate during period (as a percent)					1.90%	2.60%
DZ Financing Program | Letter of Credit, Security Deposit
Extinguishment of Debt [Line Items]
Fair value of amount outstanding			1,200,000		$ 1,200,000
DZ Financing Program | Letter of Credit
Extinguishment of Debt [Line Items]
Current borrowing capacity		$ 35,000,000
Fair value of amount outstanding			22,100,000		22,100,000
DZ Financing Program | Letter of Credit | Short Term Financing Program
Extinguishment of Debt [Line Items]
Fair value of amount outstanding			$ 20,900,000		$ 20,900,000
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%
Subsequent Event
Extinguishment of Debt [Line Items]
Taxes paid related to deferred employer payroll taxes related to the CARES Act	$ 13,200,000
Minimum
Extinguishment of Debt [Line Items]
Approximate weekly employee compensation, payroll taxes and payments to vendors					$ 16,000,000.0
Target liquidity ratio					1.5
Minimum | DZ Financing Program
Extinguishment of Debt [Line Items]
Additional borrowing capacity of facility										$ 5,000,000.0
Increase (decrease) in borrowing capacity		1,000,000.0
Maximum
Extinguishment of Debt [Line Items]
Approximate weekly employee compensation, payroll taxes and payments to vendors					$ 17,000,000
Maximum | DZ Financing Program
Extinguishment of Debt [Line Items]
Additional borrowing capacity of facility										$ 7,000,000
Increase (decrease) in borrowing capacity		$ 3,000,000