Collaboration and Licensing Agreements - Additional Information (Details) - USD ($)		1 Months Ended				3 Months Ended		6 Months Ended		44 Months Ended
	Jan. 27, 2017	Sep. 30, 2021	May 31, 2021	May 31, 2017	Feb. 28, 2017	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2020	Apr. 30, 2020
Mars, Inc.
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential license agreement fee								$ 23,600,000
Additional potential payments based on sale of first licensed product								95,000,000.0
Mars, Inc. | Research and Development
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
License fee						$ 0	$ 0	0	$ 0
Incyte Collaboration Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Percentage of sharing in global development cost										30.00%
Future profits and losses share percentage										40.00%
Upfront payment received					$ 45,000,000
Development milestone received				$ 12,000,000
Milestone payments the Company believed were due											$ 18,000,000
Net costs payable to (reimbursable from) Incyte						21,000	400,000	50,000	$ (400,000)
Net amounts payable under collaboration agreement						700,000		700,000
Incyte Collaboration Agreement | Opt Out of Co-Funding Obligations
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Incremental royalty percentage on annual net sales	3.00%
Maximum incremental royalty, percentage of previous development expenditure	120.00%
Additional potential development, regulatory and commercialization milestones receivable						720,000,000		720,000,000
Incyte Collaboration Agreement | Incyte
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Percentage of sharing in global development cost										70.00%
Future profits and losses share percentage										60.00%
Incyte Settlement Agreement and Release
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Milestone payments receivable upon dispute settlement		$ 6,750,000
License revenue		$ 6,750,000
Antengene License Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Upfront payment received			$ 3,000,000
License revenue							$ 3,000,000	0
Antengene License Agreement | Maximum
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Additional potential development, regulatory and sales milestones receivable						$ 252,000,000		252,000,000
Antengene License Agreement | ASC 606
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Upfront consideration allocated to combined unit of accounting								$ 3,000,000