Earnings Per Share (Narrative) (Details) - shares |
12 Months Ended | |||
---|---|---|---|---|
Aug. 01, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | ||||
Weighted average nonvested restricted shares outstanding | 3,000,000 | 3,800,000 | 3,600,000 | |
Anti-dilutive common stock shares excluded from earnings per share amount | 5,750,000 | |||
Weighted average number of OP units outstanding | 429,000 | 350,000 | 352,000 | |
Market Performance-Based Equity Award [Member] | Chief Executive Officer [Member] | ||||
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | ||||
Shares issuable under Stock incentive plan | 0 | |||
Forward Sales Agreements [Member] | ||||
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] | ||||
Settlement date of agreements | Aug. 01, 2017 |