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v3.21.1

Share-Based Payments (Tables) | 3 Months Ended
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Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of share-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ |  | 2021 |  | 2020
​ |  | (In thousands)
Time-Based LTIP Units | ​ | $ | 4,380 | ​ | $ | 3,351
Performance-Based LTIP Units | ​ |  | 3,239 | ​ |  | 3,989
Other equity awards (1) | ​ |  | 1,463 | ​ |  | 1,549
Share-based compensation expense - other | ​ |  | 9,082 | ​ |  | 8,889
Formation Awards | ​ |  | 729 | ​ |  | 1,259
OP Units (2) | ​ |  | 2,706 | ​ |  | 6,641
LTIP Units (2) | ​ |  | 78 | ​ |  | 112
Special Performance-Based LTIP Units (3) | ​ |  | 684 | ​ |  | 671
Special Time-Based LTIP Units (3) | ​ |  | 748 | ​ |  | 758
Share-based compensation related to Formation Transaction and special equity awards (4) | ​ |  | 4,945 | ​ |  | 9,441
Total share-based compensation expense | ​ |  | 14,027 | ​ |  | 18,330
Less amount capitalized | ​ |  | (791) | ​ |  | (968)
Share-based compensation expense | ​ | $ | 13,236 | ​ | $ | 17,362
(1) | Primarily comprising compensation expense for: (i) certain employees who have elected to receive all or a portion of any cash bonus earned in the form of fully vested LTIP Units, (ii) RSUs and (iii) our ESPP.
(2) | Represents share-based compensation expense for LTIP Units and OP Units issued in the Formation Transaction, which are subject to post-Combination employment obligations.
(3) | Represents equity awards issued related to our successful pursuit of Amazon's additional headquarters in National Landing.
(4) | Included in "General and administrative expense: Share-based compensation related to Formation Transaction and special equity awards" in the accompanying statements of operations.
Time-Based LTIP Units |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of of the significant assumptions of awards | ​
​ | ​ | ​
Expected volatility |  | 39.0%
Risk-free interest rate |  | 0.1%
Post-grant restriction periods |  | 2 years
Performance-Based LTIP Units |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of of the significant assumptions of awards | ​
​ | ​ | ​
Expected volatility |  | 34.0%
Dividend yield |  | 2.6%
Risk-free interest rate |  | 0.2%

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + Details
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