Percentage of award earned based on performance of absolute return to stockholders.

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- Definition

Percentage of award earned based on performance of relative return to stockholders.

+ References

No definition available.

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- Definition

Performance measurement period, end date.

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No definition available.

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- Definition

Performance measurement period, start date.

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- Definition

Total return to stockholders for participants to fully earn awards on absolute basis.

+ References

No definition available.

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- Definition

Total return to stockholders for participants to start to earn awards on absolute basis.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award additional vesting period for executive officers.

+ 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.

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- Definition

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

+ References

No definition available.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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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

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Incentive Compensation - Additional Information (Details) - USD ($)		12 Months Ended
	Jan. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Nov. 30, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of stock options granted		$ 4.02	$ 3.40	$ 4.44
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Options Expiration Period		10 years
Unrecognized compensation cost		$ 3,324,000
Unrecognized compensation cost expected to be recognized over a weighted-average period		1 year 7 months 6 days
Employee Stock Option \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		5 years
Employee Stock Option \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		4 years
Unrecognized compensation cost expected to be recognized over a weighted-average period		2 years 7 months 6 days
Fair value granted		$ 1,309,000	$ 1,600,000	$ 100,000
Unrecognized compensation cost		$ 1,657,000
Equity Incentive Plan [Member] \| Full Value Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant		10,376,577
Equity Incentive Plan [Member] \| Full Value Awards [Member] \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant					17,142,857
Equity Incentive Plan [Member] \| Not Full Value Awards [Member] \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant					34,285,714
LTIP Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost		$ 12,545,000
Unrecognized compensation cost expected to be recognized over a weighted-average period		2 years 3 months 18 days
Fair value granted		$ 7,467,000	$ 10,106,000	$ 2,081,000
LTIP Units \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		5 years
LTIP Units \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
2017 Performance Program [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	4 years
Performance measurement period, term	3 years
Performance measurement period, start date	Jan. 01, 2017
Performance measurement period, end date	Dec. 31, 2019
Percentage of award earned based on performance of absolute shareholder return	25.00%
Percentage of award earned based on performance of relative shareholder return	75.00%
Additional vesting period for executive officers	1 year
Fair value of awards granted	$ 10,520,000
2017 Performance Program [Member] \| Share-Based Compensation Award Tranche One Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the awards that vest	50.00%
2017 Performance Program [Member] \| Share-Based Compensation Award Tranche Two [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the awards that vest	50.00%
2017 Performance Program [Member] \| Minimum \| At 30th Percentile [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total shareholder return for participants to start earning awards on absolute basis	18.00%
2017 Performance Program [Member] \| Minimum \| Exceeds 80th Percentile [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total shareholder return for participants to fully earn awards on absolute basis	30.00%