Intangible Assets, Net - Amortization of Referral Relationships and Non Competition Agreements (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Referral relationships [Member]
Finite Lived Intangible Assets Amortization [Line Items]
2013	$ 490
2014	462
2015	441
2016	441
2017	441
2018	405
2019	368
2020	368
2021	367
2022	319
2023	211
2024	111
2025	31
2026	2
Non competition agreements [Member]
Finite Lived Intangible Assets Amortization [Line Items]
2013	361
2014	207
2015	207
2016	145
2017	100
2018	47
2019	$ 5

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Finite lived intangible assets amortization expense year six.

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Finite lived intangible assets amortization expense year twelve.

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