MERGER WITH SUPPORT.COM - Narrative (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Sep. 14, 2021 USD ($) day $ / shares	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares	Sep. 13, 2021 $ / shares
Business Acquisition [Line Items]
Common stock, par value (in dollars per share) | $ / shares		$ 0.0001	$ 0.0001
Operating loss		$ 233,163	$ (32,784)
Transaction costs			36,700
Transaction costs after tax			27,700
Class A Common Stock
Business Acquisition [Line Items]
Exchange ratio	0.115
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001			$ 0.0001
Consideration paid	$ 93,900
Greenidge Generation Holdings Inc
Business Acquisition [Line Items]
Exchange ratio	0.115
Common stock, par value (in dollars per share) | $ / shares	$ 31.71
Consideration paid	$ 93,885
Trading days | day	10
Revenue			10,000
Operating loss			73,600
Goodwill impairment charge			42,300
Pro forma net loss			$ 50,500