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5. BITCOIN - Schedule of activities Of The Bitcoin (Details) - USD ($) | Dec. 31, 2023 | Sep. 30, 2023
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Common Domain Members [Abstract] |  |
Number of Bitcoins Held | $ 3,002,000 | $ 2,243,000
Carrying basis - per bitcoin | 34,311 | 25,074
Fair value - per bitcoin | 42,290 | 26,961
Carrying basis of bitcoin (in '000s) | 102,997,000 | 56,241,000
Fair value of bitcoin (in '000s) | $ 126,951,000 | $ 60,424,000

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- Definition Cost basis of bitcoin + References No definition available. + Details
Name: | clsk_CostBasisOfBitcoin
Namespace Prefix: | clsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Cost basis - per bitcoin + References No definition available. + Details
Name: | clsk_CostBasisPerBitcoin
Namespace Prefix: | clsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Fair value of bitcoin + References No definition available. + Details
Name: | clsk_FairValueOfBitcoin
Namespace Prefix: | clsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Fair value - per Bitcoin + References No definition available. + Details
Name: | clsk_FairValuePerBitcoin
Namespace Prefix: | clsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Number of Bitcoins Held + References No definition available. + Details
Name: | clsk_NumberOfBitcoinsHeld
Namespace Prefix: | clsk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | srt_CommonDomainMembersAbstract
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration