SUBSEQUENT EVENTS (Details) $ / shares in Units, $ in Thousands		1 Months Ended			2 Months Ended	3 Months Ended
	Dec. 07, 2021 USD ($) item	Apr. 30, 2022 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) $ / shares shares	Feb. 28, 2022 USD ($) $ / shares	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 $ / shares
Subsequent Event [Line Items]
Common stock par value | $ / shares			$ 0.001			$ 0.001	$ 0.001
Net proceeds from sale of shares					$ 29,942	$ 6,784
Proceeds from issuance of common stock, net of issuance costs					$ 30,000	$ 6,787
Private Placement
Subsequent Event [Line Items]
Shares sold (in shares) | shares			271,447
Net proceeds from sale of shares			$ 2,100
ATM Offering
Subsequent Event [Line Items]
Common stock par value | $ / shares				$ 0.001
Aggregate offering price				$ 200,000
Shares sold (in shares) | shares						559,622
Net proceeds from sale of shares						$ 4,700
Percentage of commission o gross proceed				3.00%
Second Bitmain Purchase Agreement
Subsequent Event [Line Items]
Payment of deposit	$ 11,400
Number miners purchases covered by the agreement | item	3,000
Subsequent Events | Underwriting Agreement
Subsequent Event [Line Items]
Common stock par value | $ / shares		$ 0.001
Shares sold (in shares) | shares		2,985,966
Proceeds from issuance of common stock, net of issuance costs		$ 20,600
Additional option to purchase common stock (in shares) | shares		447,894
Subsequent Events | Private Placement
Subsequent Event [Line Items]
Shares sold (in shares) | shares		634,517
Net proceeds from sale of shares		$ 5,000
Subsequent Events | ATM Offering
Subsequent Event [Line Items]
Common stock par value | $ / shares		$ 0.001
Aggregate offering price		$ 200,000
Shares sold (in shares) | shares		181,481
Net proceeds from sale of shares		$ 1,500
Percentage of commission o gross proceed		3.00%