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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Accounting Policies [Abstract]
Digital assets receivable	$ 20,888	$ 0
Digital assets payable	$ 28,834	$ 0

X

- Definition

Digital Assets Payable, Current

+ References

No definition available.

+ Details

Name:	alts_DigitalAssetsPayableCurrent
Namespace Prefix:	alts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Digital Assets Receivable, Current

+ References

No definition available.

+ Details

Name:	alts_DigitalAssetsReceivableCurrent
Namespace Prefix:	alts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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