CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
OPERATING ACTIVITIES
Net (loss) income	$ (24,158)	$ 18,245	$ (57,466)
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	40,771	15,997	12,330
Stock-based compensation expense	45,893	50,320	51,219
Net gains on equity securities	(1,466)	(555)	0
Deferred income taxes	(6,228)	1,401	(223)
Accretion of discounts on marketable investment securities	(4,219)	(6,685)	(5,491)
Other	153	268	635
Change in operating assets and liabilities:
Accounts receivable	6,876	(12,643)	(14,930)
Prepaid expenses and other current assets	(544)	(1,142)	(435)
Inventory	(2,142)	(193)	(3,962)
Operating lease assets	1,372	1,322	(258)
Other assets	(366)	262	(330)
Accounts payable	3,078	(4,372)	5,707
Operating lease liabilities	(1,275)	(1,289)	852
Accrued compensation	5,732	3,610	4,587
Other accrued and current liabilities	870	320	2,139
Net cash provided by (used in) operating activities	64,347	64,866	(5,626)
INVESTING ACTIVITIES
Purchases of marketable investment securities	(188,714)	(205,729)	(189,075)
Proceeds from maturities of marketable investment securities	189,200	183,900	186,500
Proceeds from sale of equity securities	1,533	0	0
Purchases of debt securities classified as held-to-maturity	(5,569)	0	0
Asset acquisition, net of cash and cash equivalents acquired	(18,727)	0	0
Issuance of loan receivable	(2,114)	0	0
Purchases of property and equipment	(36,021)	(28,326)	(13,621)
Proceeds from sale of property and equipment	45	18	13
Net cash used in investing activities	(60,367)	(50,137)	(16,183)
FINANCING ACTIVITIES
Proceeds from exercise of common stock options	2,206	2,017	269
Payment of employees’ taxes on vested restricted stock units	(11,657)	(8,762)	(5,134)
Proceeds from contributions to the employee stock purchase plan	2,416	2,981	2,709
Repayment of principal portion of finance lease liabilities	(115)	(97)	(142)
Proceeds from lease incentives received	190	0	0
Proceeds from issuance of term debt	0	10,000	0
Net cash (used in) provided by financing activities	(6,960)	6,139	(2,298)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(2,980)	20,868	(24,107)
Beginning of year	119,709	98,841	122,948
End of year	116,729	119,709	98,841
SUPPLEMENTAL DISCLOSURE OF CASH PAID FOR:
Interest paid, net of amounts capitalized	59	434	11
Income taxes, net	1,601	2,503	198
DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Asset acquisition, liability for contingent consideration	2,500	0	0
Accrued purchases of property and equipment	11,337	2,231	1,226
Property and equipment acquired with tenant improvement allowance	7,224	1,389	1,281
Operating lease assets obtained in exchange for lease obligations	4,687	607	1,547
Decrease in operating lease assets with corresponding change in lease liabilities	(104)	(7)	0
Finance lease assets obtained in exchange for lease obligations	$ 119	$ 218	$ 0