XML 64 R51.htm IDEA: XBRL DOCUMENT v3.21.2

PARTNERS' CAPITAL - Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands					9 Months Ended		12 Months Ended
	Nov. 12, 2021	Aug. 13, 2021	May 14, 2021	Feb. 14, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
PARTNERS' CAPITAL
Quarterly distribution paid (in dollars per unit)	$ 0.2000	$ 0.1000	$ 0.1000	$ 0.4000	$ 0.4000		$ 0.4000
Total Cash Distribution		$ 13,041	$ 13,045	$ 51,753	$ 26,086	$ 51,753	$ 51,753

X

- Definition

Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

+ References

No definition available.

+ Details

Name:	arlp_DistributionMadeDistributionsPaidPerUnit
Namespace Prefix:	arlp_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

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=121586364&loc=d3e3291-108585

+ Details

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