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Basis of Presentation - Valuation Assumptions for Stock Options (Details) - $ / shares	9 Months Ended
	Oct. 28, 2023	Oct. 29, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility, minimum	86.30%	87.90%
Expected volatility, maximum	92.10%	123.70%
Risk-free interest rate, minimum	3.71%	2.52%
Risk-free interest rate, maximum	4.42%	4.41%
Expected term	2 years 6 months
Weighted average fair value of options granted	$ 3.24	$ 3.46
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term		2 years
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term		3 years 6 months

X

- Definition

The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

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The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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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 weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Expected term of 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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