Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue	$ 36,800	$ 30,279	$ 69,572	$ 57,208
Accounts receivable, current	24,117		24,117		$ 21,182
Contract with customer, revenue recognized			18,300	18,800
Contract with customer, liability, increase from advance payment			75,000
Advance payment, current	15,900		15,900
Contract with customer, reimbursement costs	124,800		124,800
Contract with customer, imputed interest	3,900		3,900
Contract with customer, liability, advance payment, noncurrent	180,700		180,700
Contract assets	3,100		3,100
Reimbursement Revenue
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue	8,800	$ 2,200	15,700	$ 2,700
Procurement Of Goods And Performing Services For Customer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, current	3,300		3,300		$ 6,500
Terms Agreement, Performance Obligation completion
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, current	8,600		8,600
Accounts receivable	83,400		83,400
Accounts receivable, noncurrent	$ 74,800		$ 74,800