Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	134,657,000	110,786,000
Common stock, shares outstanding	134,657,000	110,786,000
MPT Operating Partnership, L.P.
Common stock, shares issued	23,575,000
General Partner, units issued	1,345,000	1,107,000
General Partner, units outstanding	1,345,000	1,107,000
MPT Operating Partnership, L.P. | Common Stock
Limited Partners, units issued	133,312,000	109,679,000
Limited Partners, units outstanding	133,312,000	109,679,000
MPT Operating Partnership, L.P. | Ltip Units
Limited Partners, units issued	150,000	150,000
Limited Partners, units outstanding	150,000	150,000