Condensed consolidated statements of cash flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net loss	$ (50,506)	$ (25,266)
Adjustments to reconcile net loss to cash used in by operating activities:
Depreciation and amortization	601	705
Stock-based compensation	11,477	1,600
Amortization of operating right of use assets	417	459
Non-cash interest expense	1,198	1,679
Change in fair value of Warrant liabilities	1,512	0
Change in fair value of Term Loan	345	0
Debt issuance costs netted from Term Loan proceeds	643	0
Other non-cash activities	395	499
Change in operating assets and liabilities:
Trade accounts receivable	(40)	(266)
Inventories	(81)	(301)
Prepaid expenses and other current assets	1,709	(4,330)
Trade accounts payable	338	(136)
Accrued expenses and other current liabilities	2,126	4,578
Deferred revenue	1,157	(293)
Operating lease liabilities, net of current portion	(335)	(427)
Net cash used in operating activities	(29,044)	(21,499)
Cash flows from investing activities:
Purchase of property and equipment	(59)	(175)
Purchase of software	(20)	(43)
Net cash used in investing activities	(79)	(218)
Cash flows from financing activities:
Proceeds from Lincoln Park Purchase Agreement	15,683	0
Proceeds from government assistance	0	3,178
Proceeds from issuance of common stock upon exercise of stock options	1,208	141
Proceeds from Term Loan	14,357	19,870
Debt payments	(1,835)	(424)
Short swing profit settlement	244	0
Net cash provided by financing activities	29,657	22,765
Effect of exchange rate changes on cash and cash equivalents	(85)	(65)
Net (decrease) increase in cash and cash equivalents	449	983
Cash and cash equivalents at beginning of period	7,065	9,483
Cash and cash equivalents at end of period	7,514	10,466
Supplemental disclosure of noncash investing and financial activities:
Unpaid deferred costs	$ 0	$ 3,734