Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	171,626,000	161,310,000
Common stock, shares outstanding	171,626,000	161,310,000
General Partner [Member] | MPT Operating Partnership, L.P. [Member]
General partner, units issued	1,711,000	1,608,000
General partner, units outstanding	1,711,000	1,608,000
LTIP Units [Member] | MPT Operating Partnership, L.P. [Member]
LTIP Units, shares issued	363,000	292,000
LTIP Units, shares outstanding	363,000	292,000
Common Units [Member] | MPT Operating Partnership, L.P. [Member]
Limited Partners, units issued	169,915,000	159,702,000
Limited Partners, units outstanding	169,915,000	159,702,000