Earnings Per Share (Narrative) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average nonvested restricted shares outstanding	2,800,000	2,800,000	2,800,000	2,800,000
Weighted average number of OP units outstanding	537,000	544,000	537,000	550,000
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	0	0	0