CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities:
Net income (loss)	$ 10,362	$ (3,182)	$ (16,709)
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Depreciation and amortization expense	5,504	4,632	3,981
Stock-based compensation expense	36,495	32,325	37,183
Amortization of premiums and discounts on marketable securities	(657)	(824)	107
Amortization of debt issuance costs	215	215	90
Non-cash lease costs	6,651	6,070	4,222
Other	43	39	22
Changes in operating assets and liabilities:
Inventory	(4,286)	2,899	(2,605)
Accounts receivable	(3,019)	(11,817)	(9,102)
Other current assets	(434)	(1,733)	(557)
Accounts payable	(287)	3,049	1,437
Accrued expenses	(149)	1,025	2,145
Operating lease liabilities	7,520	2,513	(2,527)
Other non-current assets and liabilities, net	205	100	0
Net cash provided by operating activities	58,163	35,311	17,687
Investing activities:
Purchases of investments	(68,211)	(55,225)	(69,554)
Sales and maturities of investments	53,151	79,608	40,944
Expenditures for property and equipment	(63,974)	(20,013)	(7,596)
Purchases of intangible assets	0	(7,500)	0
Net cash used in investing activities	(79,034)	(3,130)	(36,206)
Financing activities:
Net proceeds from common stock issuance	24,516	6,000	3,652
Debt issuance costs	0	0	(1,076)
Payments on employee's behalf for taxes related to vesting of restricted stock unit awards	(5,462)	(2,341)	(1,492)
Other	0	(41)	(39)
Net cash provided by financing activities	19,054	3,618	1,045
Net (decrease) increase in cash, cash equivalents, and restricted cash	(1,817)	35,799	(17,474)
Cash, cash equivalents, and restricted cash at beginning of period	86,866	51,067	68,541
Cash, cash equivalents, and restricted cash at end of period	85,049	86,866	51,067
Supplemental disclosure of cash flow information:
Right-of-use assets and operating lease liabilities recognized	3,287	37,960	137
Property and equipment obtained in exchange for financing lease liabilities	686	0	0
Additions to property and equipment and intangible assets included in accounts payable	11,898	10,152	7,824
Interest paid	399	383	109
Taxes paid	628	1,166	0
Reconciliation of amounts within the consolidated balance sheets:
Cash and cash equivalents	74,520	69,088	51,067
Restricted cash	10,529	17,778	0
Total cash, cash equivalents, and restricted cash at end of period	$ 85,049	$ 86,866	$ 51,067