Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 04, 2022
Document Information Line Items
Entity Registrant Name	ALTO INGREDIENTS, INC.
Trading Symbol	ALTO
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		73,956,108
Amendment Flag	false
Entity Central Index Key	0000778164
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Document Period End Date	Sep. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	000-21467
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-2170618
Entity Address, Address Line One	1300 South Second Street
Entity Address, City or Town	Pekin
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	61554
City Area Code	(916)
Local Phone Number	403-2123
Title of 12(b) Security	Common Stock, $0.001 par value
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes