Earnings Per Share/Common Unit - Calculation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Income (loss) from continuing operations	$ 22,489	$ (203)	$ 58,465	$ 7,105
Non-controlling interests' share in continuing operations	(82)		(161)	(65)
Participating securities' share in earnings	(250)	(195)	(516)	(404)
Income (loss) from continuing operations, less participating securities' share in earnings	22,157	(398)	57,788	6,636
Income (loss) from discontinued operations attributable to MPT common stockholders				(2)
Net income (loss), less participating securities' share in earnings	$ 22,157	$ (398)	$ 57,788	$ 6,634
Basic weighted-average common shares	208,071	171,718	205,515	167,846
Dilutive potential common shares	569	651	612	613
Dilutive weighted-average common shares	208,640	172,369	206,127	168,459
MPT Operating Partnership, L.P. [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Income (loss) from continuing operations	$ 22,489	$ (203)	$ 58,465	$ 7,105
Non-controlling interests' share in continuing operations	(82)		(161)	(65)
Participating securities' share in earnings	(250)	(195)	(516)	(404)
Income (loss) from continuing operations, less participating securities' share in earnings	22,157	(398)	57,788	6,636
Income (loss) from discontinued operations attributable to MPT common stockholders				(2)
Net income (loss), less participating securities' share in earnings	$ 22,157	$ (398)	$ 57,788	$ 6,634
Basic weighted-average common shares	208,071	171,718	205,515	167,846
Dilutive potential common shares	569	651	612	613
Dilutive weighted-average common shares	208,640	172,369	206,127	168,459

Income (loss) from continuing operations, less participating securities' share in earnings.

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- Definition

Net Income Less Participating Securities Share In Earnings

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- Definition

Undistributed earning allocated to participating securities.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of income (loss) from continuing operations attributable to the noncontrolling interest. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 19

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest.

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- Definition

Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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