Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 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	136,335,000	110,786,000
Common stock, shares outstanding	136,335,000	110,786,000
MPT Operating Partnership, L.P.
General partner, units issued	1,357,000	1,107,000
General partner, units outstanding	1,357,000	1,107,000
MPT Operating Partnership, L.P. | Common Units
Limited Partners, units issued	134,978,000	109,679,000
Limited Partners, units outstanding	134,978,000	109,679,000
MPT Operating Partnership, L.P. | Ltip Units
Limited Partners, units issued	221,000	150,000
Limited Partners, units outstanding	221,000	150,000