Common Stock/Partner's Capital - Additional Information (Detail) (USD $)	12 Months Ended			12 Months Ended				0 Months Ended			3 Months Ended		1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Feb. 29, 2012	Dec. 31, 2013 MPT Operating Partnership, L.P. [Member]	Dec. 31, 2012 MPT Operating Partnership, L.P. [Member]	Dec. 31, 2013 Employee [Member]	Dec. 31, 2013 Director [Member]	Aug. 20, 2013 Public Offering [Member]	Feb. 28, 2013 Public Offering [Member]	Feb. 07, 2012 Public Offering [Member]	Dec. 31, 2012 Market Equity Offering Program [Member]	Nov. 30, 2009 Market Equity Offering Program [Member] Maximum [Member]	Feb. 28, 2014 Market Equity Offering Program [Member] Subsequent Event	Jan. 31, 2014 Market Equity Offering Program [Member] Subsequent Event	Jan. 31, 2014 Market Equity Offering Program [Member] Subsequent Event Maximum [Member]	Feb. 29, 2012 Before Amendment [Member]
Class of Stock [Line Items]
Common stock, shares issued	136,335,000	136,335,000						11,500,000	12,650,000	23,575,000	1,100,000
Underwriters' purchase of shares pursuant to over allotment								1,500,000	1,650,000	3,075,000
Public offering price for common stock per share								$ 12.75	$ 14.25	$ 9.75	$ 11.84
Net proceed from issuance of common stock	$ 313,331,000	$ 233,048,000		$ 313,331,000	$ 233,048,000			$ 140,400,000	$ 172,900,000	$ 220,100,000	$ 13,200,000		$ 12,500,000
Number of shares can be sold out												50,000,000
Sales commission											2.00%			1.25%
Increased stock purchased amount															$ 250,000,000
Common stock, shares authorized	250,000,000	250,000,000	250,000,000													150,000,000
Common stock, par value	$ 0.001	$ 0.001	$ 0.001
Percentage of ownership of general partner				100.00%
Ownership interest in equity	100.00%			99.80%
Number of other partners				3
Number of partners shared remaining ownership percentage						2	1