Legal Settlement Liability - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Feb. 13, 2018	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2020
Loss Contingencies [Line Items]
Upfront payment	$ 2,000
Royalty payment duration (in years)	10 years
Mile stone payment	$ 6,000
Common stock, shares issued (in shares)		127,864,830		127,864,830		129,205,901
Litigation settlement interest		$ 300	$ 100	$ 800	$ 500
Settlement liabilities, payment period (in years)		10 years		10 years
Legal settlement liability, current		$ 2,177		$ 2,177		$ 1,705
Becton, Dickinson And Company VS. Cytek
Loss Contingencies [Line Items]
Legal settlement liability, current		$ 10,300		$ 10,300		$ 10,700
Patent
Loss Contingencies [Line Items]
Finite-lived intangible asset, average useful life (in months)		18 months		18 months
Common stock
Loss Contingencies [Line Items]
Common stock, shares issued (in shares)							2,087,545