Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Award Performance Period

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Number Of Annual Performance Metrics

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Beta

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

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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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the 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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- Definition

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

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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.

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- Definition

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

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- Definition

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

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- Definition

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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- Definition

Percentage of vesting of award under share-based payment arrangement.

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- Definition

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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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Equity Incentive Plans - Additional Information (Details) $ / shares in Units, $ in Millions		3 Months Ended
	Mar. 01, 2021 $ / shares shares	Mar. 31, 2021 USD ($) Metric shares	Mar. 31, 2020 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant date fair value (in dollars per share) \| $ / shares	$ 0.79
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility rate		43.28%
Expected term		5 years
Risk free interest rate		0.24%
Expected dividend yield		13.30%
Options granted (in shares)	477,000
Share based compensation expense \| $		$ 0.2	$ 0.3
Unrecognized compensation costs related to awards \| $		$ 1.7
Expected weighted average period to recognize expense		2 years 7 months 6 days
Restricted Stock Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility rate		46.90%
Risk free interest rate		0.24%
Share based compensation expense \| $		$ 7.2	$ 9.5
Unrecognized compensation costs related to awards \| $		$ 27.2
Expected weighted average period to recognize expense		2 years 6 months
Granted (in shares)		1,248,000
Performance measurement \| Metric		2
Beta		0.79
Restricted Stock Award \| Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting rights (as percent)		50.00%
Performance period		3 years
Restricted Stock Award \| Tranche Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting rights (as percent)		50.00%
Performance period		3 years
Restricted Stock Award \| Certain Employees and Executive Officers
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in shares)	1,248,000
Restricted Stock Award \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period (in years)		3 years
Award vesting rights (as percent)		0.00%
Restricted Stock Award \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period (in years)		4 years
Award vesting rights (as percent)		200.00%
Performance Shares \| Certain Employees and Executive Officers
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in shares)	644,000
Employee Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Discount on purchase of Common Stock for employee from the current market price		5.00%
Capital shares reserved for future issuance		506,023
Issuance of common stock (ESPP) (in shares)		14,770
2018 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional shares authorized		16,800,000