Contribution by affiliate for general and administrative expenses.

No definition available.

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

- Definition

Represents the outstanding common units held by affiliates of the entity registered during the period.

+ References

No definition available.

+ Details

Name:	ahgp_OutstandingCommonUnitsRegistered
Namespace Prefix:	ahgp_
Data Type:	xbrli:sharesItemType
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

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

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: 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(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

+ Details

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

- Definition

Revenue earned during the period by the entity for rights granted to another party under coal mineral leases.

+ References

+ Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ahgp_AffiliatedEntityControlledByMrCraftMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ahgp_AllianceResourcePartnersLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_EquityMethodInvesteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=ahgp_HamiltonCountyIllinoisReserveAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=ahgp_WhiteOakResourcesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=ahgp_ServicesAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=ahgp_SubsidiaryAgreementsForServicesAndProductsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

RELATED-PARTY TRANSACTIONS - Registration Rights and Various ARLP Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2007
Related Party Transaction
Outstanding common units registered				47,363,000
Contributions from affiliates for general and administrative expenses	$ 1,000	$ 1,000	$ 1,500
Affiliated entity controlled by Mr. Craft \| ARLP
Related Party Transaction
Contributions from affiliates for general and administrative expenses	$ 1,000	$ 1,000	1,500
Equity Method Investee \| ARLP \| Acquisition and lease-back of reserves and surface rights \| White Oak
Related Party Transaction
Royalties generated			11,400
Equity Method Investee \| ARLP \| Coal handling and services agreement \| White Oak
Related Party Transaction
Revenue from services and products			28,200
Equity Method Investee \| ARLP \| Subsidiary agreements for purchase of services and products \| White Oak
Related Party Transaction
Revenue from services and products			$ 4,600