Balance Sheet Details (Other receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Balance Sheet Details
Tenant improvement allowance receivable (Note 12)	$ 1,835	$ 6,595
Grant and award receivable	1,528	1,936
Other receivables	$ 3,363	$ 8,531

Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

No definition available.

Name:	us-gaap_OtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant