Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2025	Nov. 07, 2025
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2025
Document Transition Report	false
Entity File Number	1-14105
Entity Registrant Name	AVALON HOLDINGS CORPORATION
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	34-1863889
Entity Address, Address Line One	One American Way
Entity Address, City or Town	Warren
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44484-5555
City Area Code	330
Local Phone Number	856-8800
Title of 12(b) Security	Class A Common Stock, $0.01 par value
Trading Symbol	AWX
Security Exchange Name	NYSEAMER
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001061069
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		3,287,647
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		611,784