Collaboration Revenue - Additional Information (Details) - USD ($)					1 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended
	Nov. 23, 2021	Dec. 07, 2020	May 16, 2019	Nov. 14, 2017	Dec. 31, 2020	Jun. 30, 2019	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2018	Dec. 31, 2021	Nov. 06, 2018
Disaggregation Of Revenue [Line Items]
Milestone payments received										$ 2,800,000
Transaction price recorded in liabilities							$ 2,500,000			2,500,000
Collaboration revenue							26,000		$ 2,739,000	1,026,000	$ 4,291,000
Short-term research and development contract liability							0			0			$ 645,000
Milestone payment associated with contract liability	$ 3,000,000	$ 1,250,000	$ 2,500,000
Prepaid expenses and other short-term assets							2,142,000			2,142,000			955,000
Other long-term assets							134,000			134,000			140,000
Collaboration Agreement with Merck | Merck
Disaggregation Of Revenue [Line Items]
Up Front Non Refundable Payment				$ 2,500,000
Milestone payments received				$ 2,500,000
Collaboration revenue							0		704,000	0	1,469,000
Collaboration Agreement with LG Chem Life Sciences | LG Chem Life Sciences
Disaggregation Of Revenue [Line Items]
Milestone payments received	3,000,000	1,250,000	2,500,000					$ 6,750,000
Collaboration revenue							26,000		$ 2,035,000	1,026,000	$ 2,823,000
Short-term research and development contract liability													645,000
Equity investment nonrefundable upfront cash payment														$ 5,000,000.0
Equity investment for research collaboration agreement														5,000,000.0
Milestone payment associated with contract liability	3,000,000	1,250,000	2,500,000
Income tax expense	$ 495,000	$ 206,250	$ 412,500
Collaboration Agreement with LG Chem Life Sciences | LG Chem Life Sciences | Maximum
Disaggregation Of Revenue [Line Items]
Additional amount receivable research development regulatory and sales milestones														$ 400,000,000.0
Collaboration Agreement with LG Chem Life Sciences | Einstein
Disaggregation Of Revenue [Line Items]
Prepaid expenses and other short-term assets							$ 0			0
Einstein License And Service Agreement | Einstein
Disaggregation Of Revenue [Line Items]
Cost Of Goods And Services Sold					$ 157,000	$ 313,000				$ 908,000		$ 438,000
Prepaid expenses and other short-term assets													$ 80,000