Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Real estate assets
Land, buildings and improvements, intangible lease assets, and other	$ 4,926,462	$ 5,944,220
Mortgage loans	1,428,069	1,778,316
Net investment in direct financing leases	690,897	698,727
Gross investment in real estate assets	7,045,428	8,421,263
Accumulated depreciation and amortization	(432,279)	(455,712)
Net investment in real estate assets	6,613,149	7,965,551
Cash and cash equivalents	710,965	171,472
Interest and rent receivables	87,939	78,970
Straight-line rent receivables	195,329	185,592
Other loans	482,453	150,209
Other assets	684,681	468,494
Total Assets	8,774,516	9,020,288
Liabilities
Debt, net	4,043,849	4,898,667
Accounts payable and accrued expenses	202,033	211,188
Deferred revenue	11,162	18,178
Lease deposits and other obligations to tenants	30,964	57,050
Total liabilities	4,288,008	5,185,083
Equity / Capital
Preferred stock, $0.001 par value. Authorized 10,000 shares; no shares outstanding
Common stock, $0.001 par value. Authorized 500,000 shares; issued and outstanding — 364,858 shares at September 30, 2018 and 364,424 shares at December 31, 2017	365	364
Limited Partners:
Additional paid-in capital	4,343,768	4,333,027
Retained earnings (deficit)	179,703	(485,932)
Accumulated other comprehensive loss	(50,569)	(26,049)
Treasury shares, at cost	(777)	(777)
Total Medical Properties Trust, Inc. Stockholders' Equity (MPT Operating Partnership, L.P. capital)	4,472,490	3,820,633
Non-controlling interests	14,018	14,572
Total Equity / Capital	4,486,508	3,835,205
Total Liabilities and Equity / Capital	8,774,516	9,020,288
MPT Operating Partnership, L.P. [Member]
Real estate assets
Land, buildings and improvements, intangible lease assets, and other	4,926,462	5,944,220
Mortgage loans	1,428,069	1,778,316
Net investment in direct financing leases	690,897	698,727
Gross investment in real estate assets	7,045,428	8,421,263
Accumulated depreciation and amortization	(432,279)	(455,712)
Net investment in real estate assets	6,613,149	7,965,551
Cash and cash equivalents	710,965	171,472
Interest and rent receivables	87,939	78,970
Straight-line rent receivables	195,329	185,592
Other loans	482,453	150,209
Other assets	684,681	468,494
Total Assets	8,774,516	9,020,288
Liabilities
Debt, net	4,043,849	4,898,667
Accounts payable and accrued expenses	110,155	121,465
Deferred revenue	11,162	18,178
Lease deposits and other obligations to tenants	30,964	57,050
Payable due to Medical Properties Trust, Inc.	91,488	89,333
Total liabilities	4,287,618	5,184,693
Limited Partners:
Accumulated other comprehensive loss	(50,569)	(26,049)
Total Medical Properties Trust, Inc. Stockholders' Equity (MPT Operating Partnership, L.P. capital)	4,472,880	3,821,023
Non-controlling interests	14,018	14,572
Total Equity / Capital	4,486,898	3,835,595
Total Liabilities and Equity / Capital	8,774,516	9,020,288
MPT Operating Partnership, L.P. [Member] | General Partner [Member]
Equity / Capital
General Partner — issued and outstanding — 3,648 units at September 30, 2018 and 3,644 units at December 31, 2017	45,261	38,489
MPT Operating Partnership, L.P. [Member] | Common Units [Member]
Limited Partners:
Limited Partners Capital	$ 4,478,188	$ 3,808,583