Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Straight-line rent receivables, net	$ 244,580	$ 219,064
Non-mortgage loans receivable, net	52,544	37,926
Other intangibles, net	8,190	13,224
Investment in unconsolidated operating entities	28,431	28,199
Other	184,619	113,990
Total other assets	$ 518,364	$ 412,403