Represents the remaining amount of funding committed by the entity to be provided to the investee.

No definition available.

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Balance Type:	debit
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- Definition

The portion of the gain (loss) that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period.

+ References

No definition available.

+ Details

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- Definition

The balloon payment due at the expiration of the lease agreement under a sale-leaseback transaction, as a percent of the equipment cost.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the monthly rental payments due under the lease entered into in connection with the transactions involving the sale of property to another party and the lease of the property back to the seller.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77913982&loc=d3e50796-112755

+ Details

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

- Definition

Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 55
-Paragraph 51
-URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51840-112757

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 55
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51831-112757

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51843-112757

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Details

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- Details

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Balance Type:
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- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
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Data Type:	na
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- Details

Name:	us-gaap_OtherCommitmentsAxis=ahgp_FundingCommitmentsMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	dei_LegalEntityAxis=ahgp_CavalierMineralsMember
Namespace Prefix:
Data Type:	na
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- Details

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COMMITMENTS AND CONTINGENCIES - Funding and Sale-Leaseback (Details) - USD ($) $ in Thousands			12 Months Ended
	Jun. 29, 2016	Oct. 29, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017	Feb. 28, 2017	Oct. 06, 2015	Nov. 30, 2014
Contractual Commitments
Proceeds from sale of mining equipment leased back			$ 33,881	$ 100,000
Sale-leaseback of mining equipment, October 2015
Contractual Commitments
Proceeds from sale of mining equipment leased back		$ 100,000
Term of lease		4 years
Monthly rent under lease agreement		$ 1,900
Balloon payment due at end of lease term (as a percent)		20.00%
Deferred gain (loss)		$ 5,000
Sale-leaseback transactions
Contractual Commitments
Proceeds from sale of mining equipment leased back	$ 33,900
Monthly rent under lease agreement	$ 700
Balloon payment due at end of lease term (as a percent)	20.00%
Deferred gain (loss)	$ (7,900)
Sale-leaseback transactions \| Minimum
Contractual Commitments
Term of lease	3 years
Sale-leaseback transactions \| Maximum
Contractual Commitments
Term of lease	4 years
Funding Commitments \| Cavalier Minerals
Contractual Commitments
Investment commitment							$ 100,000
Funding Commitments \| All Dale Minerals III \| Alliance Minerals
Contractual Commitments
Investment commitment						$ 30,000		$ 30,000
Remaining funding commitment					$ 15,600