The annual target cash incentive amount for non-option equity instruments granted to participants.

No definition available.

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- Definition

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

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

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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

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).

+ References

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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

Net number of non-option equity instruments granted to participants.

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- Definition

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

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- Definition

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 Expense - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation	$ 4,857	$ 4,063	$ 11,589	$ 10,268
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period (in shares)	530,500	112,500	656,350	328,994
Compensation cost not yet recognized	$ 29,400		$ 29,400
Compensation cost not yet recognized, period of recognition			2 years 8 months 12 days
Stock-Settled Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Compensation cost not yet recognized	5,900		$ 5,900
Compensation cost not yet recognized, period of recognition			1 year 9 months 18 days
Stock-Settled Performance-Based Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted in period (in shares)			128,883	127,060
Cash-settled performance-based share-based awards ("Liability Awards")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target cash incentive	1,000	$ 1,000	$ 1,000	$ 1,000
Compensation cost not yet recognized	2,100		$ 2,100
Compensation cost not yet recognized, period of recognition			1 year 9 months 18 days
Restricted Stock Units \| Non-employee members
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			1 year
Compensation cost not yet recognized	$ 1,200		$ 1,200
Compensation cost not yet recognized, period of recognition			8 months 12 days
Restricted stock units granted (in shares)	26,226	33,504