XML 59 R83.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

VARIABLE INTEREST ENTITIES - Cavalier (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 03, 2019
Variable Interest Entities |  |  |  |
Contributions |  | $ 2,142 |  |
Distributions paid to Partners | $ 278,425 | $ 275,902 | $ 240,812 |
Cavalier Minerals | Bluegrass Minerals |  |  |  |
Variable Interest Entities |  |  |  |
Contributions | 5,963 |  |  |
Distributions paid to Partners | $ 2,996 |  |  |
Cavalier Minerals | Bluegrass Minerals |  |  |  |
Variable Interest Entities |  |  |  |
Incentive distribution of available cash (as a percent) | 25.00% |  |  |
Cavalier Minerals |  |  |  |
Variable Interest Entities |  |  |  |
Ownership interest in VIE (as a percent) | 96.00% |  |  |
Cavalier Minerals | Bluegrass Minerals |  |  |  |
Variable Interest Entities |  |  |  |
Noncontrolling ownership interest (as a percent) | 4.00% |  |  | 4.00%
Cavalier Minerals | Cavalier Minerals |  |  |  |
Variable Interest Entities |  |  |  |
Contributions | $ 143,112 |  |  |
Distributions paid to Partners | $ 71,916 |  |  |

X
- Definition The incentive distribution of available cash as a percent. + References No definition available. + Details
Name: | arlp_DistributionsPercentageOfAvailableCash
Namespace Prefix: | arlp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDistributionsToAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromContributionsFromAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685 + Details
Name: | us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=arlp_CavalierMineralsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=arlp_BluegrassMineralsManagementLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=arlp_BluegrassMineralsManagementLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=arlp_CavalierMineralsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |