Description of the components of incentive compensation arrangement.

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Compensation Plans (Details) [Line Items]

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Number of new officers.

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Number of separation agreements.

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- Definition

Percentage of operational performance metrics accounted for target incentive compensation.

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- Definition

Percentage of relative shareholder return metrics on shareholder return metrics.

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Percentage of shareholder return metrics accounted for target incentive compensation.

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Percentage of shareholder return metrics on shareholder return metrics.

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- Definition

The portion of incentive plan compensation to be issued in stock.

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No definition available.

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The portion of incentive plan compensation to be paid in cash.

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- Definition

Date which an employee's right to an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

+ References

No definition available.

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Portion of vesting of share-based compensation awards.

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No definition available.

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Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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

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Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

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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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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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Value, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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Compensation Plans - Additional Information (Details)		3 Months Ended		9 Months Ended
Compensation Plans - Additional Information (Details)	Apr. 01, 2020 USD ($) Officer shares	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($) Agreement
New Officer Share-based Payment Arrangement [Member]
Compensation Plans Details [Line Items]
Number of new officers \| Officer	5
Share based compensation, net (in Shares) \| shares	200,000
Total share-based compensation earned, including the surrendered shares (in millions)	$ 1,800,000
Restricted common shares vesting date	Mar. 31, 2023
Restriction period	3 years
Share-based compensation expense		$ 100,000	$ 100,000	$ 400,000	$ 300,000
2021 Executive Management Incentive Plan [Member]
Compensation Plans Details [Line Items]
Incentive compensation, description				The operational performance metrics account for 50% of the total target incentive compensation. The shareholder return metrics are weighted 75% for relative shareholder return metrics and 25% for total shareholder return metrics, and account for 50% of the total target incentive compensation.
Operational performance metrics accounted for total target incentive compensation, percentage				50.00%
Percentage of relative shareholder return metrics on shareholder return metrics				75.00%
Percentage of total shareholder return metrics on shareholder return metrics				25.00%
Shareholder return metrics accounted for total target incentive compensation, percentage				50.00%
Accrued liability for potential executive bonus payments		13,000,000.0		$ 13,000,000.0
Portion of awards paid in cash				25.00%
Portion of awards issued in equity				75.00%
2021 Executive Management Incentive Plan [Member] \| General and Administrative Expenses [Member]
Compensation Plans Details [Line Items]
Labor and related expense		$ 7,000,000.0		$ 13,000,000.0
2021 Executive Management Incentive Plan [Member] \| Equity Awards Vesting At The End Of 2021 [Member]
Compensation Plans Details [Line Items]
Share-based compensation arrangement, vesting description				two-thirds
2021 Executive Management Incentive Plan [Member] \| Equity Awards Vesting In December 2022 [Member]
Compensation Plans Details [Line Items]
Share-based compensation arrangement, vesting description				one-third
2020 Executive Management Incentive Plan [Member]
Compensation Plans Details [Line Items]
Labor and related expense			$ 1,500,000		$ 4,000,000.0
Potential Aggregate Payout [Member] \| 2021 Executive Management Incentive Plan [Member] \| Minimum [Member]
Compensation Plans Details [Line Items]
Labor and related expense				$ 0
Potential Aggregate Payout [Member] \| 2021 Executive Management Incentive Plan [Member] \| Maximum [Member]
Compensation Plans Details [Line Items]
Labor and related expense				$ 22,400,000
One-Time Payment Under Separation Agreement [Member]
Compensation Plans Details [Line Items]
Number of separation agreements \| Agreement					2
One-Time Payment Under Separation Agreement [Member] \| Retirement of Executive Vice President and Chief Financial Officer [Member]
Compensation Plans Details [Line Items]
Labor and related expense					$ 1,250,000
One-Time Payment Under Separation Agreement [Member] \| Retirement of Executive Vice President and Chief Operating Officer [Member]
Compensation Plans Details [Line Items]
Labor and related expense					1,250,000
One-Time Payment Under Separation Agreement [Member] \| Retirements of Executive Vice President and Chief Operating Officer; and Executive Vice President and Chief Financial Officer [Member]
Compensation Plans Details [Line Items]
Labor and related expense					$ 2,500,000