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Stock-based Compensation - Narrative (Details)	3 Months Ended
	Mar. 31, 2021
Existing and newly elected board member
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	3 years
Employees
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	3 years
OPP plan | Tranche one
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	3 years
Award vesting percentage after initial performance period	50.00%
OPP plan | Tranche two
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	3 years
Award vesting rights	50.00%
Award mandatory holding period	2 years
PSU plan 2020
Share-based Compensation Arrangement by Share-based Payment Award
Post vesting period	2 years
PSU plan 2020 | Tranche one
Share-based Compensation Arrangement by Share-based Payment Award
Award performance period	3 years
PSU plan 2020 | Tranche two
Share-based Compensation Arrangement by Share-based Payment Award
Award vesting period	3 years
Award performance period	1 year

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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