CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net loss	$ (33,061)	$ (30,659)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	710	477
Amortization intangible assets	331	332
Amortization of right-of-use lease assets	628	552
Stock-based compensation	4,001	3,348
Amortization of debt issuance costs	297	226
Accretion of available for sale securities, net	(1,272)
Changes in operating assets and liabilities:
Accounts receivable, net	(510)	(732)
Inventory	2,301	(4,503)
Prepaid expenses and other assets	6,543	(458)
Accounts payable	(3,346)	(623)
Accrued expenses and other liabilities	(2,056)	642
Deferred revenue	19	(149)
Accrued compensation	(926)	44
Net cash used in operating activities	(26,341)	(31,503)
Cash flows from investing activities:
Purchases of available-for-sale securities	(30,733)	(34,255)
Proceeds from maturities of available-for-sale securities	52,500
Purchases of property and equipment	(627)	(794)
Net cash provided by (used in) investing activities	21,140	(35,049)
Financing activities:
Payment of common stock issuance costs		(598)
Issuance of stock under employee stock plans	117	250
Proceeds from exercise of pre-funded warrants	1
Payment of contingent earnout		(117)
Principal repayments on finance lease	(15)	(26)
Net cash provided by (used in) financing activities	103	(491)
Net decrease in cash and cash equivalents	(5,098)	(67,043)
Cash and cash equivalents at beginning of period	17,665	84,641
Cash and cash equivalents at end of period	12,567	17,598
Cash paid for:
Interest	2,828	1,706
Supplemental schedule of non-cash investing and financing activities:
Operating lease right-of-use assets obtained in exchange for lease liabilities	$ 1,792	$ 223