Reverse Merger and Contingent Value Rights - Summary of Final Allocation of Purchase Price (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Oct. 05, 2020
Assets:
Goodwill	$ 117	$ 22,441
Private Chinook
Assets:
Cash and cash equivalents			$ 73,159
Marketable securities			98,057
Accounts receivable			1,122
Prepaids and other current assets			1,757
Property and equipment, net			19,039
Operating lease right-of-use assets			53,704
Intangible assets			28,118
IPR&D			39,295
Goodwill			22,441
Restricted cash			1,750
Other assets			295
Total assets acquired			338,737
Liabilities:
Accounts payable			2,280
Accrued clinical trial and manufacturing expenses			1,632
Accrued compensation			6,854
Accrued and other current liabilities			6,092
Deferred revenue, current			660
Operating lease liability, current			2,230
Existing contingent consideration			1,800
Deferred tax liabilities			18,372
Operating lease liabilities, non-current			36,474
Other non-current liabilities			1,442
Total liabilities assumed			77,836
Net Fair Value			260,901
Private Chinook | Measurement Period Adjustment
Assets:
Goodwill			(22,324)
Total assets acquired			(22,324)
Liabilities:
Accrued and other current liabilities			(690)
Existing contingent consideration			(450)
Deferred tax liabilities			(17,735)
Other non-current liabilities			(753)
Total liabilities assumed			(19,628)
Net Fair Value			(2,696)
Private Chinook | Adjusted Fair Value at Acquisition Date
Assets:
Cash and cash equivalents			73,159
Marketable securities			98,057
Accounts receivable			1,122
Prepaids and other current assets			1,757
Property and equipment, net			19,039
Operating lease right-of-use assets			53,704
Intangible assets			28,118
IPR&D			39,295
Goodwill			117
Restricted cash			1,750
Other assets			295
Total assets acquired			316,413
Liabilities:
Accounts payable			2,280
Accrued clinical trial and manufacturing expenses			1,632
Accrued compensation			6,854
Accrued and other current liabilities			5,402
Deferred revenue, current			660
Operating lease liability, current			2,230
Existing contingent consideration			1,350
Deferred tax liabilities			637
Operating lease liabilities, non-current			36,474
Other non-current liabilities			689
Total liabilities assumed			58,208
Net Fair Value			$ 258,205