SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)						1 Months Ended	3 Months Ended		6 Months Ended		9 Months Ended	10 Months Ended	12 Months Ended	15 Months Ended
	Dec. 29, 2023 USD ($)	Aug. 10, 2023 USD ($) a MW	Jun. 20, 2023 USD ($)	Jan. 30, 2023 USD ($)	Dec. 20, 2022 USD ($)	Mar. 31, 2023 miner	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($) bitcoin	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($) bitcoin	Jul. 31, 2023 shares	Aug. 10, 2023 USD ($) a MW shares	Dec. 31, 2022 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Aug. 14, 2023 USD ($) a	Aug. 11, 2023 USD ($)	Jul. 20, 2023 USD ($)
Short-Term Debt [Line Items]
Cash and cash equivalents							$ 15,363,000		$ 15,363,000				$ 15,217,000	$ 15,363,000
Accounts payable and accrued expenses							22,900,000		22,900,000					22,900,000
Short-term environmental liability							1,700,000		1,700,000				$ 600,000	1,700,000
Principal and interest payable, current							14,500,000		14,500,000					14,500,000
Proceeds from sale of assets									592,000	$ 1,136,000				11,700,000
Number of additional miners installed | miner						1,500
Hosting agreement, period				5 years
Impairment of digital assets								$ 100,000	0	$ 100,000
Number of digital assets (in bitcoin) | bitcoin								29.0		29.0
Subsequent Event
Short-Term Debt [Line Items]
Facilities owned and operated, associated power in facility (in megawatt) | MW		44										44
Facilities owned and operated, land to be sold (in acres) | a		25										25				25
Facilities owned and operated, facility and land to be sold, covenant, minimum cash		$ 10,000,000										$ 10,000,000				$ 6,000,000	$ 6,000,000
Facilities owned and operated, land to remain with entity after sale (in acres) | a		150										150
Facilities owned and operated, expected proceeds from facility and land to be sold		$ 4,900,000
Facilities owned and operated, expected proceeds from facility capacity, maximum		$ 2,600,000
Facilities owned and operated, area of land to be subdivided (in acres) | a																25
Facilities owned and operated, facility and land to be sold, cure period		60 days
Minimum
Short-Term Debt [Line Items]
Decrease in price of bitcoin													0.64
Increase in price of natural gas													0.47
Maximum
Short-Term Debt [Line Items]
Decrease in price of bitcoin													0.66
Increase in price of natural gas													1.60
Forecast
Short-Term Debt [Line Items]
Cash and cash equivalents															$ 10,000,000
Equipment Finance Agreement
Short-Term Debt [Line Items]
Debt remaining							95,510,000		95,510,000				$ 157,493,000	95,510,000
Equipment Finance Agreement | Promissory Note
Short-Term Debt [Line Items]
Debt remaining							5,621,000		5,621,000				10,430,000	5,621,000
Equipment Finance Agreement | Subsequent Event | Promissory Note
Short-Term Debt [Line Items]
Debt remaining																		$ 4,100,000
Refinanced 2021 and 2022 Master Equipment Finance Agreement | Secured Debt
Short-Term Debt [Line Items]
Remaining principal balance, interest payments				$ 2,000,000
Principal payments plus interest payments on debt				62,700,000
Senior Secured Loan | Senior Notes
Short-Term Debt [Line Items]
Debt remaining							$ 17,689,000		$ 17,689,000				$ 0	$ 17,689,000
Secured Promissory Note | Secured Debt
Short-Term Debt [Line Items]
Principal payments plus interest payments on debt			$ 1,500,000	$ 0	$ 1,500,000
Secured Promissory Note | Forecast | Secured Debt
Short-Term Debt [Line Items]
Required principal repayment	$ 4,100,000
At The Market Issuance Sales Agreement
Short-Term Debt [Line Items]
Number of shares issued in transaction | shares							1,164,546		2,509,806
Net proceeds received							$ 3,100,000		$ 12,200,000
At The Market Issuance Sales Agreement | Subsequent Event
Short-Term Debt [Line Items]
Number of shares issued in transaction | shares											14,300,000	2,797,959
Net proceeds received												$ 14,300,000