STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($) $ in Millions			3 Months Ended
	Oct. 06, 2021	Sep. 15, 2021	Mar. 31, 2022
Maximum [Member]
Class of Stock [Line Items]
Maximum class A common stock and class B common stock shares in excess of the exchange cap		19.99%
Private Placement | Greenidge Generation Holdings Inc [Member] | Common Stock Purchase Agreement and Registration Rights Agreement [Member]
Class of Stock [Line Items]
Proceeds from common stock purchase agreement		$ 200.0
Private Placement | Greenidge Generation Holdings Inc [Member] | Common Stock Purchase Agreement and Registration Rights Agreement [Member] | Maximum [Member]
Class of Stock [Line Items]
Discount Rate		6.00%
Private Placement | Greenidge Generation Holdings Inc [Member] | Common Stock Purchase Agreement and Registration Rights Agreement [Member] | Minimum [Member]
Class of Stock [Line Items]
Discount Rate		5.00%
Common Class A [Member]
Class of Stock [Line Items]
Additional Common Stock Shares Issued			415,000
Additional Common Stock Value Issued			$ 3.9
Common Class A [Member] | Minimum [Member]
Class of Stock [Line Items]
Investors obligation to purchase own issued and outstanding shares		4.99%
Common Class A [Member] | Common Stock Purchase Agreement and Registration Rights Agreement [Member]
Class of Stock [Line Items]
Proceeds from issuance of private placement		$ 500.0
Common Class A [Member] | Greenidge Common Stock
Class of Stock [Line Items]
Additional Common Stock Shares Issued	3,500,000