Real Estate Loans Receivable (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Advances on real estate loans receivable:
Investments in new loans		$ 530,497	$ 122,632	$ 45,275
Draws on existing loans		68,225	79,575	75,634
Sub-total		598,722	202,207	120,909
Less: Seller financing on property sales		0	0	3,850
Net cash advances on real estate loans		598,722	202,207	117,059
Receipts On Real Estate Loans Receivable 1 [Abstract]
Loan payoffs		121,778	119,262	69,596
Principal Payments On Loans		33,340	32,070	33,290
Sub-total		155,118	151,332	102,886
Less : Non-cash activity	[1]	23,288	45,836	0
Net cash receipts on real estate loans		131,830	105,496	102,886
Net cash advances (receipts) on real estate loans		466,892	96,711	14,173
Change in balance due to foreign currency translation		(4,281)	(2,852)	1,402
Net Change Real Estate Loans Receivable		439,323	48,023	15,575
Summary of real estate loans receivable
Real estate loans receivable		819,492	380,169
Mortgage Receivable [Member]
Summary of real estate loans receivable
Real estate loans receivable		635,492	188,651
Other Real Estate Loans Receivables [Member]
Summary of real estate loans receivable
Real estate loans receivable		184,000	191,518
Outpatient Medical [Member]
Advances on real estate loans receivable:
Investments in new loans		0	60,902	4,095
Draws on existing loans		2,611	20,155	4,319
Sub-total		2,611	81,057	8,414
Less: Seller financing on property sales		0	0	0
Net cash advances on real estate loans		2,611	81,057	8,414
Receipts On Real Estate Loans Receivable 1 [Abstract]
Loan payoffs		0	48,258	0
Principal Payments On Loans		0	72	74
Sub-total		0	48,330	74
Less : Non-cash activity	[1]	0	45,836	0
Net cash receipts on real estate loans		0	2,494	74
Net cash advances (receipts) on real estate loans		2,611	78,563	8,340
Change in balance due to foreign currency translation		0	0	0
Net Change Real Estate Loans Receivable		2,611	32,727	8,340
Triple Net [Member]
Advances on real estate loans receivable:
Investments in new loans		530,497	61,730	41,180
Draws on existing loans		65,614	59,420	71,315
Sub-total		596,111	121,150	112,495
Less: Seller financing on property sales		0	0	3,850
Net cash advances on real estate loans		596,111	121,150	108,645
Receipts On Real Estate Loans Receivable 1 [Abstract]
Loan payoffs		121,778	71,004	69,596
Principal Payments On Loans		33,340	31,998	33,216
Sub-total		155,118	103,002	102,812
Less : Non-cash activity	[1]	23,288	0	0
Net cash receipts on real estate loans		131,830	103,002	102,812
Net cash advances (receipts) on real estate loans		464,281	18,148	5,833
Change in balance due to foreign currency translation		(4,281)	(2,852)	1,402
Net Change Real Estate Loans Receivable		$ 436,712	$ 15,296	$ 7,235

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