Represents the amount of funding provided by the entity to the investee.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Represents the entity's proportionate share for the period, before taxes, of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied.

+ References

No definition available.

+ Details

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Namespace Prefix:	ahgp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the remaining amount committed by the partnership for equity investment.

+ References

No definition available.

+ Details

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Namespace Prefix:	ahgp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Balance Type:	na
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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ahgp_CavalierMineralsMember
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Period Type:

EQUITY INVESTMENTS (Details 2) - AllDale Minerals - USD ($) $ in Millions			2 Months Ended	3 Months Ended	6 Months Ended	8 Months Ended
	Jul. 01, 2015	Nov. 10, 2014	Dec. 31, 2014	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2015
Equity Investments
Allocated losses				$ 0.2	$ 0.5
Affiliate (Cavalier Minerals)
Equity Investments
Amount of funding provided	$ 8.4	$ 7.4	$ 4.2	11.9	20.5	$ 32.1
Remaining equity investment commitment				$ 16.9	$ 16.9	$ 16.9
Ownership interest in equity method investee (as a percent)				71.70%	71.70%	71.70%