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Share Based Compensation Arrangement by Share Based Payment Award Additional Shares Issued In Period

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Forfeited in Period

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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Restriction Period From Date Of Grant

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested, Forfeited in Period

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Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Expected To Vest

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Stock Issued During Period Shares Restricted Stock Award Vested

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Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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The amount of plan compensation cost recognized during the period.

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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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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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Net number of share options (or share units) granted during the period.

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Purchase price of common stock expressed as a percentage of its fair value.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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SHARE-BASED PAYMENTS - Additional Information (Detail) - USD ($) $ in Millions			12 Months Ended
	Aug. 13, 2021	Dec. 15, 2017	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019	Jul. 23, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of nonvested stock			$ 0.7	$ 0.8
Unrecognized compensation cost related to nonvested stock			$ 0.5
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock shares available for future issuance (in shares)			77,815
Number of shares pursuant to stock options granted (in shares)			600,000
Common stock purchase price as a percentage of market value (in percentage)			85.00%
Shares issued under plan (in shares)			9,145	22,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non vested stock compensation expense			$ 0.6	$ 0.7
Weighted average period of cost expected to be expensed (in years)			9 months 18 days
Restricted Stock \| Nonemployee Director \| Reith v. Lichtenstein \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of vested shares surrendered	2,900,000
Number of nonvested shares surrendered	500,000
Minimum \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of restriction period (in years)			1 year
Maximum \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of restriction period (in years)			5 years
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant						4,945,000
Common Stock shares available for future issuance (in shares)			8,442,623
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock shares available for future issuance (in shares)						3,668,143
2010 Plan additional shares of common stock (in shares)						1,060,523
2010 Plan \| Restricted Stock and Market Performance Based Restricted Stock, Total \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award granted (in shares)		5,500,000
2010 Plan \| Restricted Stock \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award granted (in shares)		4,000,000
Restricted stock award vested (in shares)		4,000,000
2010 Plan \| Market Performance Based Restricted Stock \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award granted (in shares)		1,500,000
Restricted stock award vested (in shares)					1,000,000