Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities:
Net loss	$ (31,422,000)	$ (37,124,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	3,007,000	3,190,000
Amortization of financing lease right-of-use asset	51,000	51,000
Amortization (accretion) of interest on securities	(694,000)	(82,000)
Non-cash lease expense	27,000	113,000
Gain on lease modification	(73,000)	0
Net realized loss (gain) on investments	2,000	7,000
Stock-based compensation	3,015,000	3,882,000
Change in fair value of contingent consideration	(640,000)	789,000
Change in fair value of convertible notes payable and option liability	(7,534,000)	0
Loss on intangible asset impairment	448,000	0
Loss on property and equipment disposal	284,000	0
Cost of leased equipment sold to customer	98,000	88,000
Changes in operating assets and liabilities:
Accounts receivable	1,004,000	242,000
Inventory	(200,000)	(5,707,000)
Prepaid expenses and other current assets	1,073,000	471,000
Other assets	786,000	(372,000)
Accounts payable	(537,000)	3,017,000
Accrued expenses and contract liabilities	3,174,000	(978,000)
Net cash used in operating activities	(28,131,000)	(32,413,000)
Investing Activities:
Purchases of property and equipment	(26,000)	(360,000)
Purchase of available for sale securities	(110,557,000)	0
Sale and maturity of available for sale securities	158,169,000	16,888,000
Net cash provided by investing activities	47,586,000	16,528,000
Financing activities:
Principal payments on financing lease liability	(13,000)	(10,000)
Proceeds from sale of common stock	15,445,000	15,229,000
Offering expenses on sale of common stock	(386,000)	(380,000)
Payments on convertible notes payable	(36,664,000)	0
Proceeds from warrant and option exercises	0	23,000
Net cash (used in)/provided by financing activities	(21,618,000)	14,862,000
Effect of exchange rates on cash, cash equivalents and restricted cash	(26,000)	36,000
Net decrease in cash, cash equivalents and restricted cash	(2,189,000)	(987,000)
Cash, cash equivalents and restricted cash at beginning of period	18,348,000	5,491,000
Cash, cash equivalents and restricted cash at end of period	16,159,000	4,504,000
Reconciliation of cash, cash equivalents and restricted cash reported within the unaudited condensed consolidated balance sheets to the total amounts reported on the unaudited condensed consolidated statements of cash flows
Cash and cash equivalents	15,759,000	4,104,000
Restricted cash	400,000	400,000
Total cash, cash equivalents and restricted cash at end of period	16,159,000	4,504,000
Supplemental cash flow disclosures:
Cash paid for interest	5,620,000	76,000
Cash paid for operating lease liabilities	669,000	644,000
Supplemental disclosure of non-cash investing and financing activities:
Transfer of instruments and servers from inventory to property and equipment, net	3,505,000	2,356,000
Property and equipment included in accounts payable	0	230,000
Notes payable issuance costs in accounts payable	$ 44,000	$ 0