SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Supplemental Cash Flow Information [Abstract]
Shares issued to Support.com shareholders upon Merger		$ 0	$ 93,885
Property and equipment purchases financed with common stock		0	991
Contribution of Preferred Units, Senior Priority Units, and notes payable to related party for Greenidge class B common stock		0	72,891
Issuance of shares for investor fee associated with successful completion of Merger	$ 17,826	0	17,826
Issuance of warrants to advisor in connection with completion of Merger	$ 8,779	$ 0	$ 8,779