Performance measurement period, end date.

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- Definition

Performance measurement period, start date.

+ References

No definition available.

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- Definition

Reduction in percentage of long term incentive plan units earned if negative in shareholder return.

+ References

No definition available.

+ Details

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- Definition

The percentage of the award earned that remains to be vested on the evaluation date of performance criteria. Represented as a percentage of the total award earned, not granted.

+ References

No definition available.

+ Details

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- Definition

The percentage of the award earned that will vest on the evaluation date of performance criteria. Represented as a percentage of the total award earned, not granted.

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share based payment award equity instruments other than options granted in period total fair value.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award grant date fair value.

+ References

No definition available.

+ Details

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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

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 (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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- Definition

Amount of noncash expense for share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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)
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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.

+ References

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Paragraph 2
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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

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 (c)(2)(iii)(1)
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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

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

+ References

No definition available.

+ Details

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Incentive Compensation - Additional Information (Details) - USD ($)			3 Months Ended		9 Months Ended
	Jan. 11, 2021	Feb. 05, 2018	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 4,192,000	$ 4,503,000	$ 14,421,000	$ 14,141,000
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of awards granted	$ 1,439,000
Vesting period	4 years
Shares available for grant	166,686
2020 Performance Program [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance measurement period, term	3 years
Performance measurement period, start date	Jan. 01, 2021
Performance measurement period, end date	Dec. 31, 2023
Reduction in percentage on number of LTIP units earned if negative TSR	30.00%
Fair value of awards granted	$ 7,303,000
Vesting period	4 years
2020 Performance Program [Member] \| Share-Based Compensation Award Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of earned units	50.00%
Percentage of the awards that vest	50.00%
2020 Performance Program [Member] \| Share-Based Compensation Award Tranche Two [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of earned units	50.00%
Percentage of the awards that vest	50.00%
Long Term Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of awards granted	$ 4,598,000
Shares available for grant	579,520
Long Term Incentive Plan [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Long Term Incentive Plan [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	4 years
Appreciation Only Long Term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of awards granted	$ 4,344,000
Shares available for grant	2,171,875
2017 Performance Program [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant	1,382,807
Fair value granted		$ 7,009,000
Unrecognized compensation cost			$ 208,000		$ 208,000
Unrecognized compensation cost expected to be recognized over a weighted-average period					3 months