MERGER WITH SUPPORT - Additional Information (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) d $ / shares	Dec. 31, 2020 USD ($) $ / shares	Sep. 13, 2021 $ / shares
Business Acquisition [Line Items]
Common stock, Par or stated value per share | $ / shares	$ 0.0001	$ 0.0001
business acquisition proforma costs	$ 36,700
Loss from operations	$ (37,133)	$ (2,631)
Common Class A [Member]
Business Acquisition [Line Items]
Common stock, Par or stated value per share | $ / shares	$ 0.0001		$ 0.0001
Exchange ratio	0.115
Consideration paid	$ 93,900
Greenidge Generation Holdings Inc [Member]
Business Acquisition [Line Items]
Common stock, Par or stated value per share | $ / shares	$ 31.71
Exchange ratio	0.115
Consideration paid	$ 93,885
Trading days | d	10
Revenue	$ 10,000
transaction costs after tax	27,700
Loss from operations	41,600
Goodwill impairment charge	$ 42,300