Income taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets related to:
Net operating loss carryforwards	$ 39,079	$ 35,505
Capital loss carryforward	7,011	0
Tax credit carryforward	2,695	2,226
Stock-based compensation	2,141	3,008
Accruals and reserves	1,883	3,590
Inventory	1,410	1,408
Fixed assets	568	585
Lease liabilities	3,540	3,950
Capitalized research and development	3,222	4,818
Fair value change in investments	556	0
Other	1,084	875
Total deferred tax assets	63,189	55,965
Deferred tax liabilities related to:
Intangibles	(2,326)	(3,696)
Right-of-use assets	(2,654)	(2,500)
Fair value change in investments	0	(440)
Total deferred tax liabilities	(4,980)	(6,636)
Net deferred tax assets before valuation allowance	58,209	49,329
Less: valuation allowance	58,333	49,517	$ 33,402	$ 2,993
Net deferred tax liabilities	(124)	(188)
Less: deferred tax liability, discontinued operations	0	(74)
Net deferred tax liabilities, continuing operations	$ (124)	$ (114)