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Relationship with Universal Health Realty Income Trust and Related Party Transactions - Additional Information (Detail) (USD $)	9 Months Ended			3 Months Ended		9 Months Ended					3 Months Ended		3 Months Ended
	Sep. 30, 2014 Chief Executive Officer	Sep. 30, 2014 Chief Executive Officer Minimum	Sep. 30, 2014 Chief Executive Officer Trust Owned by Chief Executive Officer	Sep. 30, 2014 Relationship with Universal Health Realty Income Trust	Sep. 30, 2013 Relationship with Universal Health Realty Income Trust	Sep. 30, 2014 Relationship with Universal Health Realty Income Trust	Sep. 30, 2013 Relationship with Universal Health Realty Income Trust	Dec. 31, 2013 Relationship with Universal Health Realty Income Trust	Mar. 31, 2015 Relationship with Universal Health Realty Income Trust Scenario, Forecast Texas Facility	Sep. 30, 2014 Relationship with Universal Health Realty Income Trust Minimum	Mar. 31, 2015 Relationship with Universal Health Realty Income Trust Minimum Scenario, Forecast	Sep. 30, 2014 Relationship with Universal Health Realty Income Trust Maximum	Mar. 31, 2015 Relationship with Universal Health Realty Income Trust Maximum Scenario, Forecast
Related Party Transaction [Line Items]
Trust outstanding shares held, percentage				6.10%		6.10%
Advisory fee earned				$ 700,000	$ 600,000	$ 1,900,000	$ 1,800,000
Pre-tax share of income from the Trust				1,700,000	86,000	2,100,000	599,000
Share of aggregate gain on fair value recognition included in the share of trust				1,600,000		1,600,000
Non-controlling ownership interests by subsidiaries				100.00%		100.00%
Carrying value of investment in Trust				9,000,000		9,000,000		8,000,000
Market value of investment in Trust				33,000,000		33,000,000		32,000,000
Rent expense under operating leases				4,000,000	4,000,000	12,000,000	12,000,000
Estimated purchase price of The Bridgeway's real property										17,000,000		17,500,000
Number of free-standing emergency departments to be acquired									2
Aggregate construction cost/sales proceeds											12,500,000		13,000,000
Aggregate rent expense paid											850,000		900,000
Estimated payments to acquire life insurance policies	25,000,000		8,000,000
Estimated death benefit proceeds		$ 33,000,000

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Estimated Payments to Acquire Life Insurance Policies

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Number Of Freestanding Emergency Departments To Be Acquired In Business Acquisition

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Share of income included in the share of trust.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of fees earned from providing investment advice and research to customers.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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