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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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STOCK-BASED COMPENSATION - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2026 USD ($) shares	Feb. 01, 2025 USD ($)	Jan. 31, 2026 USD ($) vote shares	Feb. 01, 2025 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to unvested options and RSUs, net of forfeitures \| $	$ 40.6		$ 40.6
Unrecognized compensation expense related to unvested options weighted average recognition period (in years)			1 year 1 month 17 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			3 years
Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $	$ 14.4	$ 17.2	$ 25.9	$ 29.9
2017 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	3,205,937		3,205,937
2017 Incentive Plan \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)	56,900,610		56,900,610
2019 Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	2,211,945		2,211,945
2019 Inducement Plan \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)	10,750,000		10,750,000
Stock Options \| 2011 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options vesting (as a percent)			25.00%
Award vesting period (in years)			3 years
Options exercisable period (in years)			10 years
Stock Options \| 2017 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable period (in years)			10 years
Stock Options \| 2017 Incentive Plan \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			6 months
Stock Options \| 2017 Incentive Plan \| Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			30 months
Performance-Based Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of votes per share \| vote			1
Performance-Based Stock Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options vesting (as a percent)			150.00%
Performance-Based Stock Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options vesting (as a percent)			0.00%