Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
Feb. 09, 2020	Dec. 31, 2020
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 1.1
2016 Participation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 17.4
2020 Incentive Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 11.9
Grants issued during period (in shares)		2,639,920
Compensation cost related to non-vested awards not yet recognized		$ 7.4
Non-vested awards not yet recognized, weighted-average period (in years)		1 year 7 months 6 days
2020 Incentive Plan \| Restricted Stock Units (RSUs) \| Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award performance weight (as a percent)		50.00%
2020 Incentive Plan \| Restricted Stock Units (RSUs) \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants issued during period (in shares)		2,639,920
2020 Incentive Plan \| Restricted Stock Units (RSUs) \| Employees \| Shay Holding Corporation Merger
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants issued during period (in shares)		1,581,960
2020 Incentive Plan \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants issued during period (in shares)		631,219
Compensation cost related to non-vested awards not yet recognized		$ 4.1
Non-vested awards not yet recognized, weighted-average period (in years)		2 years
Award vesting period		3 years
2020 Incentive Plan \| Performance Shares \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants issued during period (in shares)		631,219

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

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

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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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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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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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