MERGER WITH SUPPORT - Summary of The Preliminary Allocation of The Purchase Price to The Identifiable Assets Acquired and (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 3,062	$ 0
Total consideration	93,885	$ 0
Greenidge Generation Holdings Inc [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	27,113
Short-term investments	496
Accounts receivable	5,383
Prepaid expenses and other current assets	713
Property and equipment	1,349
Other long-term assets	383
Accounts payable	(117)
Accrued expenses and other current liabilities	(3,535)
Other long-term liabilities	(242)
Intangible assets	3,810
Deferred tax liability	(13,163)
Goodwill	45,369
Total consideration	$ 93,885