Real Estate Loans Receivable (Details) - USD ($)		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Advances on real estate loans receivable:
Investments in new loans		$ 392,278,000	$ 10,674,000
Draws on existing loans		53,707,000	68,590,000
Net cash advances on real estate loans		445,985,000	79,264,000
Receipts on real estate loans receivable:
Loan payoffs		52,088,000	66,558,000
Principal payments on loans		19,023,000	25,546,000
Total receipts on real estate loans		71,111,000	46,268,000
Net advances (receipts) on real estate loans		374,874,000	32,996,000
Non Cash Decrease In Real Estate Loans Receivable	[1]	0	(45,836,000)
Change in balance due to foreign currency translation		(2,131,000)	(1,085,000)
Net change Real Estate Loans Receivable		372,743,000	(13,925,000)
Triple Net [Member]
Advances on real estate loans receivable:
Investments in new loans		392,278,000	10,674,000
Draws on existing loans		51,422,000	50,446,000
Net cash advances on real estate loans		443,700,000	61,120,000
Receipts on real estate loans receivable:
Loan payoffs		52,088,000	24,522,000
Principal payments on loans		19,023,000	25,494,000
Total receipts on real estate loans		71,111,000	50,016,000
Net advances (receipts) on real estate loans		372,589,000	11,104,000
Non Cash Decrease In Real Estate Loans Receivable	[1]	0	0
Change in balance due to foreign currency translation		(2,131,000)	(1,085,000)
Net change Real Estate Loans Receivable		370,458,000	10,019,000
Outpatient Medical [Member]
Advances on real estate loans receivable:
Investments in new loans		0	0
Draws on existing loans		2,285,000	18,144,000
Net cash advances on real estate loans		2,285,000	18,144,000
Receipts on real estate loans receivable:
Loan payoffs		0	42,036,000
Principal payments on loans		0	52,000
Total receipts on real estate loans		0	(3,748,000)
Net advances (receipts) on real estate loans		2,285,000	21,892,000
Non Cash Decrease In Real Estate Loans Receivable	[1]	0	(45,836,000)
Change in balance due to foreign currency translation		0	0
Net change Real Estate Loans Receivable		$ 2,285,000	$ (23,944,000)

[1] (1) Represents an acquisition of assets previously financed as a real estate loan. Please see Note 3 for additional information.