Balance Sheet Components - Narrative (Details) - USD ($)	1 Months Ended				3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jan. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jan. 06, 2022	Dec. 31, 2021
Nature of business [Line Items]
Depreciation					$ 230,000	$ 172,000	$ 718,000	$ 501,000
Computer software costs					760,000		760,000			$ 760,000
Accumulated amortization					$ 401,000		$ 401,000			211,000
BioShin Limited
Nature of business [Line Items]
Conversion rate of preferred stock to common stock per agreement (in shares)									0.080121
Artizan Biosciences Inc | Collaborative arrangement
Nature of business [Line Items]
Option price										$ 4,000,000
Series A2 Preferred Stock | Artizan Biosciences Inc
Nature of business [Line Items]
Preferred shares paid (in shares)		61,494	61,494
Preferred shares paid		$ 6,000,000	$ 6,000,000
Preferred shares received (in shares)		34,472,031	34,472,031
Series A2 Preferred Stock | Artizan Biosciences Inc | Collaborative arrangement
Nature of business [Line Items]
Preferred shares received (in shares)	22,975,301
Series A preferred shares | BioShin Preferred Shares
Nature of business [Line Items]
Preferred stock issued and sold (in shares)				15,384,613
Shares issued price per share				$ 3.90
Proceeds from shares issued				$ 60,000