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Stock-Based Compensation - Summary of Assumptions Used to Determine Fair Value of Performance Based Restricted Stock Units (Detail) - $ / shares	Jul. 18, 2019	Aug. 02, 2018	Jul. 13, 2017
Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price of our common stock	$ 18.49	$ 24.35	$ 32.50

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- Definition

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.

+ References

No definition available.

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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