Commitments and Contingencies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) obligation	Dec. 31, 2019 USD ($)	[1]
Commitments and Contingencies Disclosure [Abstract]
Number of outstanding credit obligations | obligation	12
Letter of credit obligation	$ 42,219
Outstanding construction financings for leased properties	431,497	$ 507,931
Additional financing to complete construction	373,422
Total loans made	210,994
Expected additional funding for investments	251,495
Total contingent purchase obligations	$ 20,764

[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.