Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Real estate assets
Land, buildings and improvements, intangible lease assets, and other	$ 11,335,005	$ 8,102,754
Investment in financing leases	2,089,219	2,060,302
Mortgage loans	602,479	1,275,022
Gross investment in real estate assets	14,026,703	11,438,078
Accumulated depreciation and amortization	(754,560)	(570,042)
Net investment in real estate assets	13,272,143	10,868,036
Cash and cash equivalents	183,794	1,462,286
Interest and rent receivables	48,476	31,357
Straight-line rent receivables	430,811	334,231
Equity investments	864,944	926,990
Other loans	910,467	544,832
Other assets	267,780	299,599
Total Assets	15,978,415	14,467,331
Liabilities
Debt, net	8,190,669	7,023,679
Accounts payable and accrued expenses	431,180	291,489
Deferred revenue	17,296	16,098
Obligations to tenants and other lease liabilities	126,393	107,911
Total Liabilities	8,765,538	7,439,177
Equity / Capital
Preferred stock, $0.001 par value. Authorized 10,000 shares; no shares outstanding
Common stock, $0.001 par value. Authorized 750,000 shares; issued and outstanding — 535,574 shares at September 30, 2020 and 517,522 shares at December 31, 2019	536	518
Limited Partners:
Additional paid-in capital	7,337,155	7,008,199
Retained (deficit) earnings	(33,619)	83,012
Accumulated other comprehensive loss	(95,654)	(62,905)
Treasury shares, at cost	(777)	(777)
Total Medical Properties Trust, Inc. Stockholders' Equity (MPT Operating Partnership, L.P. capital)	7,207,641	7,028,047
Non-controlling interests	5,236	107
Total Equity / Capital	7,212,877	7,028,154
Total Liabilities and Equity / Capital	15,978,415	14,467,331
MPT Operating Partnership, L.P. [Member]
Real estate assets
Land, buildings and improvements, intangible lease assets, and other	11,335,005	8,102,754
Investment in financing leases	2,089,219	2,060,302
Mortgage loans	602,479	1,275,022
Gross investment in real estate assets	14,026,703	11,438,078
Accumulated depreciation and amortization	(754,560)	(570,042)
Net investment in real estate assets	13,272,143	10,868,036
Cash and cash equivalents	183,794	1,462,286
Interest and rent receivables	48,476	31,357
Straight-line rent receivables	430,811	334,231
Equity investments	864,944	926,990
Other loans	910,467	544,832
Other assets	267,780	299,599
Total Assets	15,978,415	14,467,331
Liabilities
Debt, net	8,190,669	7,023,679
Accounts payable and accrued expenses	285,899	152,999
Deferred revenue	17,296	16,098
Obligations to tenants and other lease liabilities	126,393	107,911
Payable due to Medical Properties Trust, Inc.	144,891	138,100
Total Liabilities	8,765,148	7,438,787
Limited Partners:
Accumulated other comprehensive loss	(95,654)	(62,905)
Total Medical Properties Trust, Inc. Stockholders' Equity (MPT Operating Partnership, L.P. capital)	7,208,031	7,028,437
Non-controlling interests	5,236	107
Total Equity / Capital	7,213,267	7,028,544
Total Liabilities and Equity / Capital	15,978,415	14,467,331
General Partner [Member] | MPT Operating Partnership, L.P. [Member]
Equity / Capital
General Partner ? issued and outstanding ? [ ] units at June 30, 2020and 5,176 units at December 31, 2019	73,062	70,939
Limited Partners:
Total Equity / Capital	73,062	70,939
Common Units [Member] | MPT Operating Partnership, L.P. [Member]
Limited Partners:
Common units — issued and outstanding — 530,218 units at September 30, 2020 and 512,346 units at December 31, 2019	$ 7,230,623	$ 7,020,403