Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

+ References

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

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-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6919109

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Business Acquisition (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	May 01, 2012
Health Plus [Member]
Business Acquisition [Line Items]
Effective date of Health Plus acquisition	May 01, 2012
Purchase price of operating assets and contract rights of Health Plus		$ 85.2
Medicaid and Medicare Service Contracts [Member]
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	115 months
Trade Name [Member]
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	120 months
Provider Network [Member]
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	120 months