2.4.0.84070 - Disclosure - WHITE OAK TRANSACTIONS (Details)truefalseIn Millions, unless otherwise specifiedfalse1false USDtruefalse$D2011Q3_M0922_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2011-09-21T00:00:002011-09-22T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDtruefalse$D2013Q2_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2013-04-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$3false USDtruefalse$D2012Q2_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2012-04-01T00:00:002012-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDtruefalse$D2013Q2YTD_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$5false USDtruefalse$D2012Q2YTD_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2012-01-01T00:00:002012-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6false USDtruefalse$D2012Q4_15M_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2011-09-21T00:00:002012-12-31T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7false USDtruefalse$D2013Q2_21M_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2011-09-21T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$8false USDtruefalse$D2013Q2YTD_MinimumMember_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseMinimumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MinimumMemberus-gaap_RangeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9false USDtruefalse$D2013Q2YTD_MaximumMember_WhiteOakResourcesMemberhttp://www.sec.gov/CIK0001344980duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10false USDtruefalse$D2011Q3_M0922_WhiteOakResourcesMember_HamiltonCountyIllinoisReserveAcquisitionMemberhttp://www.sec.gov/CIK0001344980duration2011-09-21T00:00:002011-09-22T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseReserve Acquisitionus-gaap_TypeOfArrangementAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_HamiltonCountyIllinoisReserveAcquisitionMemberus-gaap_TypeOfArrangementAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$11false USDtruefalse$D2013Q2YTD_WhiteOakResourcesMember_HamiltonCountyIllinoisReserveAcquisitionMemberhttp://www.sec.gov/CIK0001344980duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseReserve Acquisitionus-gaap_TypeOfArrangementAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_HamiltonCountyIllinoisReserveAcquisitionMemberus-gaap_TypeOfArrangementAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$12false USDtruefalse$D2012Q4_16M_WhiteOakResourcesMember_HamiltonCountyIllinoisReserveAcquisitionMemberhttp://www.sec.gov/CIK0001344980duration2011-09-23T00:00:002012-12-31T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseReserve Acquisitionus-gaap_TypeOfArrangementAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_HamiltonCountyIllinoisReserveAcquisitionMemberus-gaap_TypeOfArrangementAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13false truefalseD2011Q3_M0922_WhiteOakResourcesMember_HamiltonCountyIllinoisReserveAcquisitionRightsAcquiredOnTransactionDateMemberhttp://www.sec.gov/CIK0001344980duration2011-09-21T00:00:002011-09-22T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseReserve Acquisition, rights purchased on Transaction Dateus-gaap_TypeOfArrangementAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_HamiltonCountyIllinoisReserveAcquisitionRightsAcquiredOnTransactionDateMemberus-gaap_TypeOfArrangementAxisexplicitMemberTonStandardhttp://www.xbrl.org/2009/utrTutr014false truefalseD2013Q2YTD_WhiteOakResourcesMember_HamiltonCountyIllinoisReserveAcquisitionRightsAcquiredOnTransactionDateMemberhttp://www.sec.gov/CIK0001344980duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseReserve Acquisition, rights purchased on Transaction Dateus-gaap_TypeOfArrangementAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_HamiltonCountyIllinoisReserveAcquisitionRightsAcquiredOnTransactionDateMemberus-gaap_TypeOfArrangementAxisexplicitMemberTonStandardhttp://www.xbrl.org/2009/utrTutr015false truefalseD2013Q2YTD_WhiteOakResourcesMember_HamiltonCountyIllinoisReserveAcquisitionRightsAcquiredCurrentFiscalYearMemberhttp://www.sec.gov/CIK0001344980duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseReserve Acquisition, rights purchased during first half of 2013us-gaap_TypeOfArrangementAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_HamiltonCountyIllinoisReserveAcquisitionRightsAcquiredCurrentFiscalYearMemberus-gaap_TypeOfArrangementAxisexplicitMemberTonStandardhttp://www.xbrl.org/2009/utrTutr016false USDtruefalse$D2013Q2YTD_WhiteOakResourcesMember_ServicesAgreementMemberhttp://www.sec.gov/CIK0001344980duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseWhite Oakus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_WhiteOakResourcesMemberus-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxisexplicitMemberfalsefalseServices Agreementus-gaap_TypeOfArrangementAxisxbrldihttp://xbrl.org/2006/xbrldiahgp_ServicesAgreementMemberus-gaap_TypeOfArrangementAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3us-gaap_ScheduleOfEquityMethodInvestmentsLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0White oak transactions2false 4ahgp_AmountFundedByPartnershipahgp_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse6950000069.5USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse190300000190.3USD$falsetruefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the amount of funding provided by the partnership.No definition available.false2Amount funded by partnership3false 4ahgp_ExpectedFundingByPartnershipahgp_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse300500000300.5falsefalsefalse9truefalsefalse425500000425.5falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the total cumulative funding expected to be provided by the partnership, including funding provided to date.No definition available.false2Total expected funding by partnership4false 4ahgp_ExpectedFundsVestingPeriodahgp_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse001 year 6 monthsfalsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaRepresents the period over which additional funding is expected to be provided by the partnership.No definition available.false0Expected period of funding5false 4ahgp_CoalReservesRightsPurchasedApproximateTonnageahgp_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13truefalsefalse204900000204900000falsefalsefalse14falsefalsefalse00falsefalsefalse15truefalsefalse6650000066500000falsefalsefalse16falsefalsefalse00falsefalsefalsenum:massItemTypedecimalRepresents the approximate amount of proven and probable coal reserves for which the rights were purchased in the transaction.No definition available.false256Coal reserves, rights purchased (in tons)6false 4ahgp_CoalReservesTonnageDevelopedForFutureMiningahgp_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14truefalsefalse105200000105200000falsefalsefalse15truefalsefalse3430000034300000falsefalsefalse16falsefalsefalse00falsefalsefalsenum:massItemTypedecimalRepresents the portion of the coal reserves for which rights were purchased in the transaction that are currently being developed for future mining by the related party.No definition available.false256Coal reserves developed for future mining (in tons)7false 4us-gaap_PaymentsToAcquireMineralRightsus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10truefalsefalse3380000033.8falsefalsefalse11truefalsefalse1890000018.9falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe cash outflow from the acquisition of a mineral right which is the right to extract a mineral from the earth or to receive payment, in the form of royalty, for the extraction of minerals.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Payment for acquisition of coal reserves and other assets8false 4ahgp_PaymentsForDevelopmentOfCoalReservesahgp_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12truefalsefalse5160000051.6falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the cash outflow to fund the development of acquired mineral reserves.No definition available.false2Payment for development of acquired coal reserves9false 4ahgp_AdditionalCoalReserveAcquisitionsahgp_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11truefalsefalse3570000035.7falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAmount committed by the partnership for additional coal reserve acquisitions.No definition available.false2Commitment for additional coal reserve acquisitions10false 4us-gaap_PaymentsToAcquireEquityMethodInvestmentsus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse3570000035.7falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4truefalsefalse4750000047.5falsefalsefalse5falsefalsefalse00falsefalsefalse6truefalsefalse6680000066.8falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Purchase of equity investment11false 4us-gaap_EquityMethodInvestmentOwnershipPercentageus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2truetruefalse0.2000.200falsefalsefalse3falsetruefalse00falsefalsefalse4truetruefalse0.2000.200falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7truetruefalse0.2000.200falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11falsetruefalse00falsefalsefalse12falsetruefalse00falsefalsefalse13falsetruefalse00falsefalsefalse14falsetruefalse00falsefalsefalse15falsetruefalse00falsefalsefalse16falsetruefalse00falsefalsefalsenum:percentItemTypepureThe percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 18 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -Subparagraph a (1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Voting Interest(as a percent)12false 4us-gaap_EquityMethodInvestmentAggregateCostus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse150000000150.0falsefalsefalse3falsefalsefalse00falsefalsefalse4truefalsefalse150000000150.0falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse150000000150.0falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThis element represents the aggregate cost of investments accounted for under the equity method of accounting.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 12 -Article 5 false2Equity method investment, net13false 4us-gaap_EquityMethodInvestmentDividendsOrDistributionsus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7truefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThis item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 5 false2Distributions from White Oak14false 4ahgp_IncomeLossFromEquityMethodInvestmentsPreTaxahgp_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1falsefalsefalse00falsefalsefalse2truefalsefalse59000005.9falsefalsefalse3truefalsefalse46000004.6falsefalsefalse4truefalsefalse1010000010.1falsefalsefalse5truefalsefalse86000008.6falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents 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.No definition available.false2Allocated losses15false 4ahgp_AdditionalCashCommittedForConstructionLoanahgp_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16truefalsefalse1050000010.5falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of construction loan committed to be provided by the partnership.No definition available.false2Additional commitment for construction loan16false 4ahgp_TermOfConstructionLoanahgp_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16falsefalsefalse0020 yearsfalsefalsefalsexbrli:durationItemTypenaRepresents the term of the construction loan committed to be provided by the partnership.No definition available.false0Term of construction loan17false 4ahgp_DueFromAffiliateNoncurrentExcludingAccruedInterestahgp_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalse14falsefalsefalse00falsefalsefalse15falsefalsefalse00falsefalsefalse16truefalsefalse55000005.5USD$falsetruefalsexbrli:monetaryItemTypemonetaryAmount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due after 1 year (or 1 business cycle), excluding interest accrued.No definition available.false2Construction Loan utilizedfalseWHITE OAK TRANSACTIONS (Details) (White Oak, USD $)HundredThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.ahgp.com/role/DisclosureWhiteOakTransactionsDetails1617