CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities:
Net loss	$ (8,544)	$ (12,515)
Adjustments to reconcile net loss to net cash flows from operating activities:
Depreciation and amortization expense	2,701	2,329
Stock-based compensation expense	19,354	17,492
Amortization of premiums and discounts on marketable securities	(365)	(504)
Amortization of debt issuance costs	108	108
Non-cash lease costs	3,480	2,466
Other	15	17
Changes in operating assets and liabilities:
Inventory	(1,800)	2,103
Accounts receivable	10,360	8,220
Other current assets	421	(241)
Accounts payable	(209)	956
Accrued expenses	(4,393)	(2,219)
Operating lease liabilities	4,511	(184)
Other non-current assets and liabilities, net	98	28
Net cash provided by operating activities	25,737	18,056
Investing activities:
Purchases of investments	(35,700)	(28,537)
Sales and maturities of investments	23,307	42,038
Expenditures for property and equipment	(30,778)	(5,609)
Purchases of intangible assets	0	(7,500)
Net cash (used in) provided by investing activities	(43,171)	392
Financing activities:
Net proceeds from common stock issuance	11,460	3,498
Payments on employee’s behalf for taxes related to vesting of restricted stock unit awards	(5,038)	(2,176)
Other	0	(20)
Net cash provided by financing activities	6,422	1,302
Net (decrease) increase in cash, cash equivalents, and restricted cash	(11,012)	19,750
Cash, cash equivalents, and restricted cash at beginning of period	86,866	51,067
Cash, cash equivalents, and restricted cash at end of period	75,854	70,817
Supplemental disclosure of cash flow information:
Right-of-use asset and lease liability recognized	3,037	35,976
Additions to property and equipment included in accounts payable	13,213	4,321
Reconciliation to amounts within the condensed consolidated balance sheets:
Cash and cash equivalents	50,291	43,023
Restricted cash	25,563	27,794
Total cash, cash equivalents, and restricted cash at end of period	$ 75,854	$ 70,817