XML 35 R28.htm IDEA: XBRL DOCUMENT
v3.25.2

4. BITCOIN (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2025
Common Domain Members [Abstract] |
Schedule of Company's Bitcoin Holdings | The following table presents the Company's bitcoin holdings as of June 30, 2025 and September 30, 2024:
|  | As of |
Bitcoin holdings |  | June 30, 2025 |  |  | September 30, 2024 |
Number of bitcoin held |  |  | 10,075 |  |  |  | 6,819 |
Cost basis - per bitcoin |  | $ | 94,058 |  |  | $ | 55,408 |
Fair value - per bitcoin |  | $ | 107,173 |  |  | $ | 63,301 |
Cost basis of bitcoin (in '000s) |  | $ | 947,625 |  |  | $ | 377,839 |
Fair value of bitcoin (in '000s) |  | $ | 1,079,754 |  |  | $ | 431,661 |
Schedule of Activities of The Bitcoin | The following table presents information based on the activity of bitcoin for the three and nine months ended June 30, 2025 and 2024:
|  | Three months ended |  |  | Nine months ended |  |
($ in thousands) |  | June 30, 2025 |  |  | June 30, 2024 |  |  | June 30, 2025 |  |  | June 30, 2024 |  |
Beginning Balance - before cumulative effect change |  | $ | 979,635 |  |  | $ | 357,981 |  |  | $ | 431,661 |  |  | $ | 56,241 |  |
Cumulative effect of the adoption of ASC 350-60 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,183 |  |
Adjusted beginning balance after cumulative effect change |  | $ | 979,635 |  |  | $ | 357,981 |  |  | $ | 431,661 |  |  | $ | 60,424 |  |
Addition of bitcoin from mining activities(1) |  |  | 198,644 |  |  |  | 104,108 |  |  |  | 542,662 |  |  |  | 289,693 |  |
Bitcoin purchased |  |  | 82,152 |  |  |  | — |  |  |  | 82,152 |  |  |  | — |  |
Bitcoin sold |  |  | (127,829 | ) |  |  | — |  |  |  | (127,829 | ) |  |  | — |  |
Bitcoin issued for services and other non-cash consideration |  |  | (81,360 | ) |  |  | (718 | ) |  |  | (88,263 | ) |  |  | (44,490 | ) |
Bitcoin transferred to collateral account |  |  | (282,418 | ) |  |  | — |  |  |  | (291,278 | ) |  |  | — |  |
Bitcoin received from collateral account |  |  | 42,279 |  |  |  | — |  |  |  | 171,459 |  |  |  | — |  |
(Gain) loss on fair value of bitcoin |  |  | 268,651 |  |  |  | (48,338 | ) |  |  | 359,190 |  |  |  | 107,406 |  |
Ending Balance(2) |  | $ | 1,079,754 |  |  | $ | 413,033 |  |  | $ | 1,079,754 |  |  | $ | 413,033 |  |
(1) Net of mining pool fees. (2) Includes Bitcoin - current of $877,067 and Bitcoin - noncurrent of $202,687 as presented within condensed consolidated balance sheets as of June 30, 2025.

X
- Definition ScheduleOfactivities of the bitcoinTableTextBlock + References No definition available. + Details
Name: | clsk_ScheduleofactivitiesOfTheBitcointabletextblock
Namespace Prefix: | clsk_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
Name: | us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration