Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
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	500,000,000	500,000,000
Common stock, shares issued	236,656,000	172,743,000
Common stock, shares outstanding	236,656,000	172,743,000
Common Units [Member] | MPT Operating Partnership, L.P. [Member]
Limited Partners, units issued	234,294,000	171,021,000
Limited Partners, units outstanding	234,294,000	171,021,000
General Partner [Member] | MPT Operating Partnership, L.P. [Member]
General partner, units issued	2,362,000	1,722,000
General partner, units outstanding	2,362,000	1,722,000
LTIP Units [Member] | MPT Operating Partnership, L.P. [Member]
LTIP Units, shares issued	292,000	292,000
LTIP Units, shares outstanding	292,000	292,000