Debt - Summary of Outstanding Debt (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Unamortized Debt Discount (Convertible Note)		$ (1,082)
Debt Balance (Convertible Note)		66,077
GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 34,430	35,446
Unamortized Debt Discount	(895)	(1,060)
Debt Balance	34,430	34,386
Capital lease, Principle Balance	832	992
Capital lease, Debt Balance	832	992
Less: Current Portion	(9,849)	(7,234)
Total Long-Term	$ 23,686	27,152
Princpal Balance Outstanding (Convertible Note)		31,713
Unamortized Debt Discount (Convertible Note)		(22)
Debt Balance (Convertible Note)		31,691
Total debt and convertible notes		$ 67,159
Silicon Valley Bank Term Loan [Member] \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Issuance Date(s)	September 2021	September 2021
Maturity Date(s)	September 2024	September 2024
Stated Interest Rate	3.50%	3.50%
Principal Balance Outstanding	$ 10,000	$ 10,000
Unamortized Debt Discount	(193)	(225)
Debt Balance	$ 9,807	$ 9,775
Horizon Term Loan [Member] \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Issuance Date(s)	December 2021	December 2021
Maturity Date(s)	May 2025	May 2025
Stated Interest Rate	9.00%	9.00%
Principal Balance Outstanding	$ 15,000	$ 15,000
Unamortized Debt Discount	(479)	(582)
Debt Balance	14,521	$ 14,418
Convertible Notes - PIPE Investors [Member] \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Issuance Date(s)		December 2021
Maturity Date(s)		December 2022
Stated Interest Rate		0.33%
Princpal Balance Outstanding (Convertible Note)		$ 13,500
Unamortized Debt Discount (Convertible Note)		0
Debt Balance (Convertible Note)		$ 13,500
Convertible Note [Member] \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Issuance Date(s)		April & May 2020
Maturity Date(s)		April & May 2022
Stated Interest Rate		5.00%
Princpal Balance Outstanding (Convertible Note)		$ 18,213
Unamortized Debt Discount (Convertible Note)		(22)
Debt Balance (Convertible Note)		$ 18,191
Total Debt \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Debt Balance	$ 33,535
Trinity Equipment Financing [Member] \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Issuance Date(s)	March 2021 - August 2021	March 2021 - August 2021
Maturity Date(s)	March 2024 - August 2024	March 2024 - August 2024
Principal Balance Outstanding	$ 8,598	$ 9,454
Unamortized Debt Discount	(223)	(252)
Debt Balance	$ 8,375	$ 9,202
Trinity Equipment Financing [Member] \| Maximum [Member] \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Stated Interest Rate	9.73%	9.73%
Trinity Equipment Financing [Member] \| Minimum [Member] \| GREENLIGHT BIOSCIENCES HOLDINGS, PBC [Member]
Debt Instrument [Line Items]
Stated Interest Rate	9.48%	9.48%

Capital lease obligations gross.

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