STOCKHOLDERS' EQUITY - Additional Information (Details)				1 Months Ended				12 Months Ended
	Oct. 06, 2021 shares	Sep. 15, 2021 USD ($)	Mar. 16, 2021	Sep. 30, 2021 shares	Jan. 31, 2021 USD ($) $ / shares shares	Jul. 31, 2020 USD ($)	Oct. 31, 2018 shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Sep. 13, 2021 $ / shares shares
Class Of Stock [Line Items]
Common stock, Shares authorized								3,000,000,000	0
Common stock, Par or stated value per share | $ / shares								$ 0.0001	$ 0.0001
Preferred stock, Shares authorized								20,000,000	20,000,000
Preferred stock, Par or stated value per share | $ / shares								$ 0.0001	$ 0.0001
Stockholders equity note stock split			4-to-1
Preferred stock, Shares outstanding								0
Common stock, Shares issued								40,865,336	0
Common stock | $								$ 4,000	$ 0
Payment of stock issuance costs | $								$ 2,296,000
Common units, outstanding									750
Common stock, Shares outstanding								40,865,336	0
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%
Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock, Shares authorized										20,000,000
Preferred stock, Par or stated value per share | $ / shares										$ 0.0001
Greenidge Generation Holdings Inc [Member]
Class Of Stock [Line Items]
Number of tranche | $						2
Greenidge Generation Holdings Inc [Member] | Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred units, voting rights								one vote per preferred unit
Greenidge Generation Holdings Inc [Member] | Tranche One
Class Of Stock [Line Items]
Partners' Capital Account, Exchanges and Conversions | $						$ 13,900,000
Greenidge Generation Holdings Inc [Member] | Tranche Two
Class Of Stock [Line Items]
Partners' Capital Account, Exchanges and Conversions | $						$ 16,300,000
Support Com
Class Of Stock [Line Items]
Payment of stock issuance costs | $								$ 2,297,000
Greenidge Common Stock
Class Of Stock [Line Items]
Stock Issued During Period, Shares, Stock Splits					28,000,000
Stockholders equity note stock split					4-for-1
Private Placement
Class Of Stock [Line Items]
Proceeds from issuance of private placement | $					$ 37,100,000
Equity Incentive Plan
Class Of Stock [Line Items]
Shares based payment arrangement, shares purchased for award							1,250
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period							750
Shares based payment arrangement, equity instrument other than option, vested in period									730
Shares based payment arrangement, equity instrument other than option, non vested units									20
Shares based payment arrangement, vesting rights percentage								100.00%
Common Stock Purchase Agreement and Registration Rights Agreement [Member] | Private Placement | Greenidge Generation Holdings Inc [Member]
Class Of Stock [Line Items]
Proceeds from common stock purchase agreement | $		$ 200,000,000
Common Stock Purchase Agreement and Registration Rights Agreement [Member] | Private Placement | Greenidge Generation Holdings Inc [Member] | Maximum [Member]
Class Of Stock [Line Items]
Discount rate		6.00%
Common Stock Purchase Agreement and Registration Rights Agreement [Member] | Private Placement | Greenidge Generation Holdings Inc [Member] | Minimum [Member]
Class Of Stock [Line Items]
Discount rate		5.00%
Common Class A [Member]
Class Of Stock [Line Items]
Common stock, Shares authorized										2,400,000,000
Common stock, Par or stated value per share | $ / shares								$ 0.0001		$ 0.0001
Stock issued during period shares, Conversion of convertible securities				5,760,000
Common stock, Shares issued								12,338,964
Payment of stock issuance costs | $								$ 3,500,000
Additional Common Stock Shares Issued								2,132,500
Additional Common Stock Value Issued | $								$ 51,000,000.0
Stock owned								16.60%
Warrant To Purchase								344,800
Exercise Price | $ / shares								$ 6.25
Fair Value Of warrant | $								$ 8,800,000
Common stock, Shares outstanding								12,338,964
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] | Support Com
Class Of Stock [Line Items]
Additional Common Stock Shares Issued								562,174
Additional Common Stock Value Issued | $								$ 17,800,000
Common Class A [Member] | Greenidge Common Stock
Class Of Stock [Line Items]
Additional Common Stock Shares Issued	3,500,000
Common Class A [Member] | Merger Agreement [Member]
Class Of Stock [Line Items]
Common stock, Shares issued								2,960,731
Common stock | $								$ 93,900,000
Payment of stock issuance costs | $								$ 91,600,000
Common Class A [Member] | Common Stock Purchase Agreement and Registration Rights Agreement [Member]
Class Of Stock [Line Items]
Proceeds from issuance of private placement | $		$ 500,000,000
Common Class B [Member]
Class Of Stock [Line Items]
Common stock, Shares authorized										600,000,000
Common stock, Par or stated value per share | $ / shares										$ 0.0001
Stock issued during period shares, Conversion of convertible securities				720,000
Common stock, Shares issued								28,526,372
Common stock, Shares outstanding								28,526,372
Common Class B [Member] | Common Stock [Member]
Class Of Stock [Line Items]
Common Stock, voting rights								ten votes per share
GGHI Class B Common Stock [Member]
Class Of Stock [Line Items]
Shares issued in exchange for acquisition of ownership interests					28,000,000
GGHI Class B Common Stock [Member] | Greenidge Common Stock
Class Of Stock [Line Items]
Shares issued in exchange for acquisition of ownership interests					7,000,000
GGHI Class B Common Stock [Member] | Private Placement
Class Of Stock [Line Items]
Conversion of Stock, Shares Converted					750
Series A Redeemable Convertible Preferred Stock | Private Placement
Class Of Stock [Line Items]
Stock issued during period, Shares					1,620,000
Shares issued, Price per share | $ / shares					$ 25
Gghi Class A Common Stock [Member] | Common Stock [Member]
Class Of Stock [Line Items]
Common Stock, voting rights								one vote per share