Common Stock and Noncontrolling Interest in Subsidiaries - Additional Information (Details) - USD ($)	1 Months Ended			3 Months Ended			6 Months Ended
	Mar. 31, 2022	Jul. 31, 2021	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Dividends declared				$ 0			$ 0
Common stock, voting rights							Each share of common stock entitles the holder to one vote and to receive dividends when and if declared by the board of directors of the Company.
Shares sold/issued				45,396,398			45,396,398		44,292,102
Losses attributed to noncontrolling interests				$ (833,000)	$ (803,000)		$ (1,627,000)	$ 686,000
Common Stock
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Additional shares issued						13,685,000
Noncontrolling Interest in Subsidiaries | HLBV
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Losses attributed to noncontrolling interests				$ 100,000			100,000
License Agreement between Amber and Massachusetts Institute of Technology | Common Stock
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Shares sold/issued			200,000		200,000			200,000
Additional consideration received							$ 0	$ 0
Maximum | Noncontrolling Interest in Subsidiaries | HLBV
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Losses attributed to noncontrolling interests					$ 100,000			$ 100,000
Cullinan Amber Corp | Common Stock
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Shares issued				300,000			300,000
Cullinan Amber Corp | Series A Preferred Stock
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Shares issued			3,000,000.0	6,000,000.0	3,000,000.0		6,000,000.0	3,000,000.0
Gross proceeds							$ 6,000,000.0	$ 3,000,000.0
Percentage of share purchased as part of asset acquisition							93.50%
Ownership interest percentage							6.50%
Cullinan Florentine Corp | HLBV
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Losses attributed to noncontrolling interests				$ 0	$ 0		$ 0	0
Cullinan Florentine Corp | Series A Preferred Stock
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Percentage of share purchased as part of asset acquisition							94.80%
Ownership interest percentage							5.20%
Cullinan Florentine Corp | Series B Preferred Units
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Gross proceeds		$ 8,100,000
Additional shares issued		7,500,000
MICA | HLBV
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Losses attributed to noncontrolling interests				700,000	200,000		$ 1,100,000	500,000
MICA | Series A Senior Preferred Stock
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Gross proceeds	$ 8,800,000		$ 7,100,000
Percentage of share purchased as part of asset acquisition							53.50%
Ownership interest percentage							46.50%
Purchase of shares	6,700,000		5,400,000
MICA | Series A Senior Preferred Stock | Other Existing Investors
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Gross proceeds	$ 1,200,000		$ 900,000
Purchase of shares	900,000		700,000
Cullinan Pearl Corp | HLBV
Common Stock And Noncontrolling Interest In Subsidiaries [Line Items]
Losses attributed to noncontrolling interests				$ 0	$ (500,000)		$ (300,000)	$ 1,200,000