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Consolidated Income Statements (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Admissions advisory and related expenses to related parties	$ 505us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	$ 805us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

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- Details

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Namespace Prefix:	us-gaap_
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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Period Type:	duration