Leases (Details) - Schedule of leases - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule of leases [Abstract]
Right of use operating lease assets, net	$ 13,413	$ 11,046
Current portion, operating leases	3,909	2,180
Operating leases, net of current portion	$ 9,382	$ 8,715

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

No definition available.

Name:	alto_OperatingLeasesNetOfCurrentPortion
Namespace Prefix:	alto_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant