Commitments and Contingencies (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) obligation	Dec. 31, 2019 USD ($)	[1]
Commitments and Contingencies Disclosure [Abstract]
Number of outstanding credit obligations | obligation	8
Letter of credit obligation	$ 37,014
Outstanding construction financings for leased properties	411,700	$ 507,931
Additional financing to complete construction	332,074
Total loans made	250,215
Expected additional funding for investments	212,306
Total contingent purchase obligations	$ 19,442

[1] The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.