Represents the vesting period of equity interests issued or issuable in a business combination.

No definition available.

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Balance Type:	na
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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to working capital in connection with a business combination for which the initial accounting was incomplete.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the length of time the acquisition has been providing services.

+ References

No definition available.

+ Details

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Namespace Prefix:	mgln_
Data Type:	xbrli:durationItemType
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- Definition

Represents the amount of working capital receivable as of date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
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-Publisher FASB
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-Paragraph 8
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
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- Definition

Amount of fresh-start adjustment to goodwill.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
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-Section 45
-Paragraph 20
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Balance Type:	debit
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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
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- Details

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- Details

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- Details

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- Details

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Acquisitions - Other Acquisitions (Details) - USD ($) $ in Thousands	Feb. 07, 2017	Jul. 01, 2016	Feb. 29, 2016	Apr. 01, 2015	Jan. 31, 2015	Dec. 31, 2017
Veridicus
Acquisitions
Base purchase price	$ 74,500
Increase (decrease) in goodwill due to measurement period adjustment						$ 2,300
AFSC
Acquisitions
Base purchase price		$ 117,500
Restricted common stock issued		4,000
Amount of consideration paid in cash		113,500
Maximum potential contingent payments		10,000
Working capital receivable						3,900
AFSC \| Restricted Common Stock
Acquisitions
Restricted common stock issued		$ 4,000
Restricted common stock issued, vesting period		2 years
4D Pharmacy Management Systems, Inc.
Acquisitions
Base purchase price				$ 54,700
Maximum potential contingent payments				20,000
Working capital adjustments				$ 300
TMG
Acquisitions
Base purchase price			$ 14,800
Maximum potential contingent payments			15,000
Working capital receivable			$ 200
Length of expertise in community-based long-term care services and supports			30 years
HSM
Acquisitions
Base purchase price					$ 13,600
Working capital adjustments					$ 100
Customer contracts \| Veridicus
Acquisitions
Increase (decrease) in goodwill due to measurement period adjustment						2,900
Other \| Veridicus
Acquisitions
Increase (decrease) in goodwill due to measurement period adjustment						$ (600)