Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flow - Operating Activities
Net Income	$ 124,120	$ 106,993	$ 67,649
Adjustments to net income:
Depreciation and amortization, including intangible assets and deferred financing costs	112,722	104,894	96,700
Straight-line rent adjustment and amortization of rent-related intangibles	(21,420)	(19,101)	(19,517)
Non-cash asset management fee expense and directors’ compensation	14,696	26,387	21,953
Realized and unrealized loss (gain) on foreign currency transactions and other	7,696	5,408	(7,929)
Deferred income tax expense (benefit)	4,150	7,599	(1,961)
Accretion of commercial mortgage-backed securities and other	(3,760)	(554)	(395)
Equity in losses (earnings) of equity method investments in real estate in excess of distributions received	2,501	(13,974)	18,521
Gain on sale of real estate	(2,197)	(13,338)	(8,059)
Impairment charges	1,023	570	0
Other non-cash adjustments	928	0	0
Loss on extinguishment of debt	58	0	538
Settlement of derivative asset	2,948	0	2,964
Net changes in other operating assets and liabilities	419	5,171	12,134
Net Cash Provided by Operating Activities	243,884	210,055	182,598
Cash Flows - Investing Activities
Acquisitions of real estate and direct financing leases	(293,324)	(74,993)	(310,890)
Capital expenditures on owned real estate	(8,035)	(4,352)	(2,622)
Funding of loans receivable	(42,600)	0	0
Proceeds from repayment of loan receivable	40,000	0	0
Capital contributions to equity investments in real estate	(39,015)	(199,470)	(156,228)
Value added taxes paid in connection with acquisition of real estate	(37,540)	(5,499)	(29,071)
Return of capital from equity investments in real estate	34,962	83,882	9,050
Funding for build-to-suit projects	(24,258)	(68,901)	(91,402)
Value added taxes refunded in connection with acquisition of real estate	15,194	4,852	40,933
Proceeds from repayment of debenture	7,633	0	0
Payment of deferred acquisition fees to an affiliate	(6,382)	(6,755)	(14,354)
Changes in investing restricted cash	6,300	(4,691)	3,036
Deposits for investments	(1,000)	0	0
Investment in securities	0	(7,789)	(1,614)
Proceeds from sale of real estate	0	68,789	19,973
Net Cash Used in Investing Activities	(348,065)	(214,927)	(533,189)
Cash Flows - Financing Activities
Borrowings from Senior Credit Facility	235,367	0	0
Distributions paid	(215,914)	(209,054)	(198,440)
Proceeds from mortgage financing	170,233	92,791	308,873
Scheduled payments and prepayments of mortgage principal	(121,267)	(51,309)	(44,830)
Repayments of Senior Credit Facility	(120,400)	0	0
Proceeds from issuance of shares, net of issuance costs	103,657	101,983	97,975
Repurchase of shares	(37,091)	(25,375)	(18,184)
Distributions to noncontrolling interests	(35,716)	(30,776)	(26,760)
Proceeds from notes payable to affiliate	25,000	0	0
Repayment of notes payable to affiliate	(25,000)	0	0
Contributions from noncontrolling interests	15,928	0	0
Payment of financing costs and mortgage deposits, net of deposits refunded	(3,408)	(878)	(4,006)
Changes in financing restricted cash	(1,098)	(3,564)	(5,389)
Net Cash (Used in) Provided by Financing Activities	(9,709)	(126,182)	109,239
Change in Cash and Cash Equivalents During the Year
Effect of exchange rate changes on cash	(8,940)	(11,335)	7,130
Net decrease in cash and cash equivalents	(122,830)	(142,389)	(234,222)
Cash and cash equivalents, beginning of year	275,719	418,108	652,330
Cash and cash equivalents, end of year	$ 152,889	$ 275,719	$ 418,108