Recently Issued Accounting Literature (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change						$ 16,064
Credit losses on loans receivable	$ 6,108	$ 0	$ 13,369	$ 0
Earnings Less Than Distributions
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change						$ 16,064
Earnings Less Than Distributions | Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of accounting change					$ 16,064