Subsequent Events - additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2014
Subsequent Event [Line Items]
Comment period for Interim Final RVUs	60 days
Fish [Member]
Subsequent Event [Line Items]
Revenue	$ 4.4
Fish [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Percentage of estimated reduction in reimbursements	20.00%
Fish [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Percentage of estimated reduction in reimbursements	30.00%

Amount of revenues recognized by the entity from providing services to in-patients, outpatients, residents in facilities owned or operated by the entity, from insurance premiums, or from goods provided or services performed.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Name:	us-gaap_HealthCareOrganizationRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration