Real Estate Loans Receivable (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016
Advances on real estate loans receivable:
Investments in new loans		$ 10,037	$ 8,223
Draws on existing loans		40,680	42,836
Net cash advances on real estate loans		50,717	51,059
Receipts on real estate loans receivable:
Loan payoffs		157,539	209,916
Principal payments on loans		798	4,454
Sub-total		158,337	214,370
Less : Non-cash activity	[1],[2]	(121,837)	(46,027)
Total receipts on real estate loans		36,500	168,343
Net advances (receipts) on real estate loans		14,217	(117,284)
Change in balance due to foreign currency translation		5,471	(8,504)
Net change Real Estate Loans Receivable		(102,149)	(171,815)
Triple Net [Member]
Advances on real estate loans receivable:
Investments in new loans		10,037	8,223
Draws on existing loans		40,680	42,803
Net cash advances on real estate loans		50,717	51,026
Receipts on real estate loans receivable:
Loan payoffs		97,039	182,613
Principal payments on loans		798	4,454
Sub-total		97,837	187,067
Less : Non-cash activity	[1],[2]	(61,337)	(31,014)
Total receipts on real estate loans		36,500	156,053
Net advances (receipts) on real estate loans		14,217	(105,027)
Change in balance due to foreign currency translation		5,471	(8,504)
Net change Real Estate Loans Receivable		(41,649)	(144,545)
Outpatient Medical [Member]
Advances on real estate loans receivable:
Investments in new loans		0	0
Draws on existing loans		0	33
Net cash advances on real estate loans		0	33
Receipts on real estate loans receivable:
Loan payoffs		60,500	27,303
Principal payments on loans		0	0
Sub-total		60,500	27,303
Less : Non-cash activity	[1],[2]	(60,500)	(15,013)
Total receipts on real estate loans		0	12,290
Net advances (receipts) on real estate loans		0	(12,257)
Change in balance due to foreign currency translation		0	0
Net change Real Estate Loans Receivable		$ (60,500)	$ (27,270)

[1] Current year outpatient medical represents a deed in lieu of foreclosure on a previously financed first mortgage property.

[2] Triple-net and prior year outpatient medical represents acquisitions of assets previously financed as real estate loans. Please see Note 3 for additional information.