The fixed charge coverage ratio.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Interest and debt related expenses associated with nonoperating financing activities of the entity.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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Identification of whether the entity has been in compliance with any credit facility debt covenants during the period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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NOTES PAYABLE AND OTHER LIABILITIES - Term loan and Senior secured credit facility (Details) - USD ($) $ in Thousands			6 Months Ended	12 Months Ended
	Aug. 07, 2020	Aug. 06, 2020	Aug. 06, 2020	Jan. 31, 2021	Jan. 31, 2020
Debt Instrument [Line Items]
Outstanding amount				$ 507,950	$ 396,794
Unamortized debt issuance costs		$ 3,300	$ 3,300
Debt issuance costs				$ 7,200	4,600
Interest expense		400
Second amended and restated credit agreement \| Maximum
Debt Instrument [Line Items]
Commitment fee percentage				0.50%
Second amended and restated credit agreement \| Minimum
Debt Instrument [Line Items]
Commitment fee percentage				0.35%
Senior secured credit facility
Debt Instrument [Line Items]
Debt issuance costs	$ 8,000
Senior secured credit facility \| One-month LIBOR
Debt Instrument [Line Items]
Spread interest rate	1.00%
Senior secured credit facility \| Federal funds rate
Debt Instrument [Line Items]
Spread interest rate	0.50%
Senior secured credit facility \| Second amended and restated credit agreement
Debt Instrument [Line Items]
Outstanding amount				$ 0
Debt issuance costs	$ 5,100
Term of credit agreement	5 years
Weighted average interest rate				2.04%
Fixed charge coverage ratio				1.00%
Credit covenant compliance				As of January 31, 2021, the Company was in compliance with these covenants.
Senior secured credit facility \| Second amended and restated credit agreement \| Base rate \| Maximum
Debt Instrument [Line Items]
Spread interest rate	1.25%
Senior secured credit facility \| Second amended and restated credit agreement \| Base rate \| Minimum
Debt Instrument [Line Items]
Spread interest rate	0.75%
Senior secured credit facility \| Second amended and restated credit agreement \| LIBOR \| Maximum
Debt Instrument [Line Items]
Spread interest rate	2.25%
Senior secured credit facility \| Second amended and restated credit agreement \| LIBOR \| Minimum
Debt Instrument [Line Items]
Spread interest rate	1.75%
Trade Letters of Credit
Debt Instrument [Line Items]
Outstanding amount				$ 6,600
Standby Letters of Credit
Debt Instrument [Line Items]
Outstanding amount				$ 3,900
Term Loan
Debt Instrument [Line Items]
Proceeds from borrowings					$ 350,000
Repayments of debt	$ 300,000		50,000
Outstanding amount		$ 300,000	$ 300,000
Unamortized debt issuance costs	6,100
Term Loan \| Senior secured credit facility \| Second amended and restated credit agreement
Debt Instrument [Line Items]
Senior secured credit facility	$ 650,000