Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Real estate assets
Land, buildings and improvements, intangible lease assets, and other	$ 6,552,944	$ 5,268,459
Mortgage loans	1,216,442	1,213,322
Net investment in direct financing leases	686,599	684,053
Gross investment in real estate assets	8,455,985	7,165,834
Accumulated depreciation and amortization	(531,880)	(464,984)
Net investment in real estate assets	7,924,105	6,700,850
Cash and cash equivalents	451,652	820,868
Interest and rent receivables	24,103	25,855
Straight-line rent receivables	268,901	220,848
Equity investments	799,058	520,058
Other loans	370,631	373,198
Other assets	284,761	181,966
Total Assets	10,123,211	8,843,643
Liabilities
Debt, net	4,878,310	4,037,389
Accounts payable and accrued expenses	192,948	204,325
Deferred revenue	10,449	13,467
Obligations to tenants and other lease liabilities	117,869	27,524
Total Liabilities	5,199,576	4,282,705
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 — 394,425 shares at June 30, 2019 and 370,637 shares at December 31, 2018	394	371
Limited Partners:
Additional paid-in capital	4,855,310	4,442,948
Retained earnings	121,772	162,768
Accumulated other comprehensive loss	(66,530)	(58,202)
Treasury shares, at cost	(777)	(777)
Total Medical Properties Trust, Inc. Stockholders' Equity (MPT Operating Partnership, L.P. capital)	4,910,169	4,547,108
Non-controlling interests	13,466	13,830
Total Equity / Capital	4,923,635	4,560,938
Total Liabilities and Equity / Capital	10,123,211	8,843,643
MPT Operating Partnership, L.P. [Member]
Real estate assets
Land, buildings and improvements, intangible lease assets, and other	6,552,944	5,268,459
Mortgage loans	1,216,442	1,213,322
Net investment in direct financing leases	686,599	684,053
Gross investment in real estate assets	8,455,985	7,165,834
Accumulated depreciation and amortization	(531,880)	(464,984)
Net investment in real estate assets	7,924,105	6,700,850
Cash and cash equivalents	451,652	820,868
Interest and rent receivables	24,103	25,855
Straight-line rent receivables	268,901	220,848
Equity investments	799,058	520,058
Other loans	370,631	373,198
Other assets	284,761	181,966
Total Assets	10,123,211	8,843,643
Liabilities
Debt, net	4,878,310	4,037,389
Accounts payable and accrued expenses	93,523	108,574
Deferred revenue	10,449	13,467
Obligations to tenants and other lease liabilities	117,869	27,524
Payable due to Medical Properties Trust, Inc.	99,035	95,361
Total Liabilities	5,199,186	4,282,315
Limited Partners:
Accumulated other comprehensive loss	(66,530)	(58,202)
Total Medical Properties Trust, Inc. Stockholders' Equity (MPT Operating Partnership, L.P. capital)	4,910,559	4,547,498
Non-controlling interests	13,466	13,830
Total Equity / Capital	4,924,025	4,561,328
Total Liabilities and Equity / Capital	10,123,211	8,843,643
General Partner [Member] | MPT Operating Partnership, L.P. [Member]
Equity / Capital
General Partner — issued and outstanding — 3,647 units at March 31, 2018and 3,644 units at December 31, 2017	49,797	46,084
Limited Partners:
Total Equity / Capital	49,797	46,084
Common Units [Member] | MPT Operating Partnership, L.P. [Member]
Limited Partners:
Limited Partners Capital	$ 4,927,292	$ 4,559,616