Represents the high end of the range of the notice period required for termination of contract.

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Namespace Prefix:	mgln
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the high end of the range of the term of the contract entered with the customer.

+ Details

Name:	mgln_MaximumTermOfContract
Namespace Prefix:	mgln
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the high end of the range of term of the renewed contract with the customer.

+ Details

Name:	mgln_MaximumTermOfRenewedContract
Namespace Prefix:	mgln
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the low end of the range of the notice period required for termination of contract.

+ Details

Name:	mgln_MinimumNoticePeriodForContractTermination
Namespace Prefix:	mgln
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the low end of the range of the term of the contract entered with the customer.

+ Details

Name:	mgln_MinimumTermOfContract
Namespace Prefix:	mgln
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the low end of the range of term of the renewed contract with the customer.

+ Details

Name:	mgln_MinimumTermOfRenewedContract
Namespace Prefix:	mgln
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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Period Type:	duration

- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1

Reference 2: 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=6880815&loc=d3e20235-122688

+ Details

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General (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Y D contract customer segment	Sep. 30, 2010
Concentration of Business
Net revenue	$ 686,843	$ 750,319	$ 2,077,936	$ 2,220,030
Term of contract, low end of the range (in years)			1
Term of contract, high end of the range (in years)			3
Term of renewed contract, low end of the range (in years)			1
Term of renewed contract, high end of the range (in years)			2
Notice period for termination of contract, low end of the range (in days)			60
Notice period for termination of contract, high end of the range (in days)			180
Pennsylvania Counties
Concentration of Business
Net revenue			265,100	255,000
Florida Areas
Concentration of Business
Net revenue			$ 100,000	$ 106,000