CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss	$ (60,919,000)	$ (57,050,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,118,000	1,052,000
Amortization intangible assets	585,000	664,000
Amortization of right-of-use lease assets	1,272,000	1,100,000
Impairment of long-lived assets	2,626,000
Impairment of intangible	1,046,000	0
Stock-based compensation	7,276,000	7,482,000
Amortization of debt issuance costs	621,000	473,000
Accretion of available for sale securities, net	(2,248,000)	(772,000)
Other non-cash operating activities, net		(70,000)
Changes in operating assets and liabilities:
Accounts receivable, net	717,000	(3,282,000)
Inventory	3,769,000	(7,414,000)
Prepaid expenses and other assets	6,047,000	(4,845,000)
Accounts payable	(3,262,000)	1,287,000
Accrued expenses and other liabilities	(3,955,000)	17,000
Deferred revenue	103,000	46,000
Accrued compensation	(858,000)	240,000
Net cash used in operating activities	(46,062,000)	(61,072,000)
Cash flows from investing activities:
Purchases of available-for-sale securities	(60,069,000)	(98,723,000)
Proceeds from maturities of available-for-sale securities	103,400,000	25,650,000
Purchases of property and equipment	(929,000)	(1,356,000)
Net cash provided by (used in) investing activities	42,402,000	(74,429,000)
Financing activities:
Proceeds from the issuance of common stock, net of issuance costs		20,516,000
Proceeds from issuance of pre-funded warrants, net of issuance costs		38,518,000
Proceeds from Debt, Net of Issuance Costs		9,850,000
Issuance of stock under employee stock plans	127,000	414,000
Taxes paid on vested stock awards under employee stock plans	(92,000)
Payment of common stock IPO issuance costs		(598,000)
Payment of contingent earnout		(117,000)
Principal repayments on finance lease	(31,000)	(58,000)
Net cash provided by financing activities	4,000	68,525,000
Net decrease in cash and cash equivalents	(3,656,000)	(66,976,000)
Cash and cash equivalents at beginning of year	17,665,000	84,641,000
Cash and cash equivalents at end of year	14,009,000	17,665,000
Cash paid for:
Taxes	2,000	2,000
Interest	5,813,000	4,060,000
Supplemental schedule of non-cash investing and financing activities:
Operating lease right-of-use assets obtained in exchange for lease liabilities	$ 1,792,000	$ 808,000