XML 116 R1.htm IDEA: XBRL DOCUMENT v3.22.2.2
Document and Entity Information - USD ($)
 12 Months Ended 24 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Feb. 25, 2022
Jun. 30, 2021
Document and Entity Information        
Document Type 10-K/A      
Document Annual Report true      
Document Transition Report false      
Document Period End Date Dec. 31, 2021      
Entity File Number 0-26823      
Entity Registrant Name ALLIANCE RESOURCE PARTNERS LP      
Entity Incorporation, State or Country Code DE      
Entity Tax Identification Number 73-1564280      
Entity Address, Address Line One 1717 South Boulder Avenue, Suite 400      
Entity Address, City or Town Tulsa      
Entity Address, State or Province OK      
Entity Address, Postal Zip Code 74119      
City Area Code 918      
Local Phone Number 295-7600      
Entity Well-known Seasoned Issuer Yes      
Entity Voluntary Filers No      
Entity Current Reporting Status Yes      
Entity Interactive Data Current Yes      
Entity Filer Category Large Accelerated Filer      
Entity Small Business false      
Entity Emerging Growth Company false      
ICFR Auditor Attestation Flag true      
Entity Shell Company false      
Title of 12(b) Security Common Units      
Trading Symbol ARLP      
Security Exchange Name NASDAQ      
Entity Common Units Outstanding     127,195,219  
Entity Public Float       $ 745,685,497
Auditor Name Grant Thornton LLP Ernst & Young LLP    
Auditor Firm ID 248 42    
Auditor Location Tulsa, Oklahoma Tulsa, Oklahoma    
Entity Central Index Key 0001086600      
Current Fiscal Year End Date --12-31      
Document Fiscal Year Focus 2021      
Document Fiscal Period Focus FY      
Amendment Flag false