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16. MAJOR CUSTOMERS AND VENDORS (Additional Information) (Details)	12 Months Ended
	Sep. 30, 2022
Bitcoin [Member]
Representation of company's revenue, percent	10.00%

X

- Definition

Representation of company's revenue, percent

+ References

No definition available.

+ Details

Name:	clsk_RepresentationOfCompanysRevenuePercent
Namespace Prefix:	clsk_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=clsk_BitcoinMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: