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Summary of Significant Accounting Policies and Procedures and Newly Adopted Accounting Standards - Net Income Per Common Share (Details) - shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Earnings Per Share Reconciliation [Abstract] |  |  |
Weighted average shares used for the basic net income per share computation (in shares) | 315,837,012 | 289,427,430 | 273,465,680
Incremental shares from share-based compensation (in shares) | 322,265 | 179,532 | 154,050
Weighted average partnership common units convertible to common shares that were dilutive (in shares) | 0 | 317,022 | 317,022
Weighted average shares used for diluted net income per share computation (in shares) | 316,159,277 | 289,923,984 | 273,936,752
Unvested shares from share-based compensation |  |  |
Net income per common share |  |  |
Anti-dilutive shares excluded from computation (in shares) | 8,113 | 13,148 | 32,205
Partnership common units convertible to common shares |  |  |
Net income per common share |  |  |
Anti-dilutive shares excluded from computation (in shares) | 442,073 | 297,576 | 88,182

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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