CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities:
Net loss	$ (16,175)	$ (22,631)
Adjustments to reconcile net loss to net cash flows from operating activities:
Depreciation and amortization expense	3,483	2,942
Stock-based compensation expense	25,416	29,443
Amortization of premiums and discounts on marketable securities	(788)	305
Amortization of debt issuance costs	161	36
Non-cash lease costs	4,291	3,120
Other	18	21
Changes in operating assets and liabilities:
Inventory	3,365	(3,348)
Accounts receivable	6,810	3,141
Other current assets	(627)	(164)
Accounts payable	360	(37)
Accrued expenses	(2,562)	(97)
Operating lease liabilities	1,408	(2,019)
Other non-current assets and liabilities, net	65	0
Net cash provided by operating activities	25,225	10,712
Investing activities:
Purchases of investments	(36,254)	(43,950)
Sales and maturities of investments	60,890	35,944
Expenditures for property and equipment	(12,178)	(6,471)
Purchases of intangible assets	(7,500)	0
Net cash provided by (used in) investing activities	4,958	(14,477)
Financing activities:
Net proceeds from common stock issuance	4,614	3,040
Debt issuance costs	0	(1,076)
Payments on employee’s behalf for taxes related to vesting of restricted stock unit awards	(2,262)	(1,485)
Other	(41)	(39)
Net cash provided by financing activities	2,311	440
Net increase (decrease) in cash, cash equivalents, and restricted cash	32,494	(3,325)
Cash, cash equivalents, and restricted cash at beginning of period	51,067	68,541
Cash, cash equivalents, and restricted cash at end of period	83,561	65,216
Supplemental disclosure of cash flow information:
Right-of-use asset and lease liability recognized	36,022	137
Additions to property and equipment included in accounts payable	5,568	482
Reconciliation to amounts within the condensed consolidated balance sheets:
Cash and cash equivalents	60,473	65,216
Restricted cash	23,088	0
Total cash, cash equivalents, and restricted cash at end of period	$ 83,561	$ 65,216