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13. MAJOR CUSTOMERS AND VENDORS (Additional Information) (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Digital Currency Mining [Member] | Minimum [Member] |  |  |  |
Representation of company's revenue, percent | 10.00% | 10.00% | 10.00% | 10.00%

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- Definition Representation of company's revenue, percent + References No definition available. + Details
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Namespace Prefix: | clsk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |