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INTANGIBLE ASSETS, NET - Additional Information (Details)	6 Months Ended
	Jun. 30, 2014
Referral relationships [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	6 years
Referral relationships [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	16 years
Non-competition agreements [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	5 years
Non-competition agreements [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	6 years

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration