Debt - Exchangeable Senior Notes - Carrying value (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Principal amount	$ 304,436
Exchangeable Senior Notes
Principal amount	4,436	$ 6,436
Unamortized issuance cost	(13)	(56)
Carrying value	$ 4,423	$ 6,380

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant