Balance Sheet Details (Other receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Balance Sheet Details
Tenant improvement allowance receivable (Note 12)	$ 748	$ 1,835
Grant and award receivable	966	1,528
Other receivables	$ 1,714	$ 3,363

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