Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (16,603)	$ (11,195)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,507	2,650
Amortization of operating lease-right-of use assets	1,433	1,596
Stock-based compensation	12,792	10,621
Loss on disposal of property and equipment	52	0
(Benefits from) provision for credit losses	(73)	14
Provision for excess and obsolete inventory	1,037	596
Gain on investments, accretion, and amortization, net	(2,385)	(3,704)
Interest expenses for accretion of the legal settlement liabilities	447	831
Change in operating assets and liabilities:
Trade accounts receivable	10,153	(745)
Inventories	9,199	(159)
Prepaid expenses and other assets	543	(3,169)
Trade accounts payable	96	(1,699)
Accrued expenses and other liabilities	(9,389)	275
Legal settlement liabilities	(70)	(210)
Operating lease liabilities	(1,160)	(1,415)
Deferred revenue	582	5,721
Net cash provided by operating activities	10,161	8
Cash flows from investing activities:
Purchases of marketable securities	(113,985)	(129,081)
Proceeds from maturities of marketable securities	112,000	10,000
Proceeds from sale of property and equipment	76	0
Purchase of property and equipment	(1,620)	(1,818)
Acquisition of business	0	(44,895)
Purchase of intangible assets	(203)	(55)
Payment for additional investment in Cytek Japan	0	(235)
Net cash used in investing activities	(3,732)	(166,084)
Cash flows from financing activities:
Repayment of loan	(278)	(287)
Proceeds from Employee Stock Purchase Plan	1,007	966
Payments for taxes related to net share settlement of equity awards	(278)	(168)
Proceeds from issuance of common stock under employee stock plans	730	686
Proceeds from line of credit	1,391	0
Payments for repurchase of shares	(2,670)	(981)
Net cash (used in) provided by financing activities	(98)	216
Effect of exchange rate changes on cash, cash equivalents and restricted cash	3,957	(2,096)
Cash, cash equivalents and restricted cash:
Net increase (decrease) in cash, cash equivalents and restricted cash	10,288	(167,956)
Cash, cash equivalents and restricted cash at beginning of period	167,630	299,500
Cash, cash equivalents and restricted cash at end of period	177,918	131,544
Supplemental disclosure of cash flow information:
Cash paid for taxes	1,058	683
Non-cash investing and financing activities:
Fixed asset purchases in accounts payable or accrued purchase at period end	123	30
Intangible asset in accounts payable or accrued expenses at period end	$ 0	$ 8