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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | Sep. 28, 2024 | Dec. 30, 2023
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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