CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Cash flows from operating activities:
Net loss	$ (11,588,000)	$ (32,735,000)	$ (25,818,000)	$ (49,530,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization			1,735,000	1,617,000
Provision for bad debts	59,000	0	78,000	0
Equity-based compensation			2,263,000	2,208,000
Loss on disposal of property and equipment			87,000	68,000
Unrealized gain on equity investments	(13,000)	(40,000)	(66,000)	(90,000)
Units offering issuance cost			680,000	0
Gain on extinguishment of accounts payable	(743,000)	0	(743,000)	0
Loss on fair value adjustments	1,002,000	5,030,000	2,219,000	5,030,000
Paid-in-Kind (PIK) Interest			1,689,000	0
(Increase) decrease in assets:
Accounts receivable			265,000	74,000
Inventory			(139,000)	(30,000)
Prepaid expense and other			85,000	(77,000)
Increase (decrease) in liabilities:
Accounts payable			(644,000)	(451,000)
Accrued liabilities and other			(278,000)	348,000
Deferred revenue and income			(742,000)	(69,000)
Net cash used in operating activities			(16,035,000)	(24,188,000)
Cash flows from investing activities:
Purchases of equipment			(515,000)	(167,000)
Maturities of marketable securities			0	9,291,000
Net cash (used in) provided by investing activities			(515,000)	9,124,000
Cash flows from financing activities:
Units offering issuance cost			(884,000)	0
Payments on finance leases	(471,000)	(462,000)	(537,000)	(540,000)
Proceeds from issuance of convertible notes			0	10,000,000
Transaction costs related to debt and equity issuances			0	(3,731,000)
Payment of debt			(726,000)	0
Net cash provided by financing activities			12,835,000	9,729,000
Effect of exchange rate on cash			165,000	(288,000)
Decrease in cash and cash equivalents			(3,550,000)	(5,623,000)
Cash and cash equivalents, beginning of period			12,138,000	34,905,000	$ 34,905,000
Cash and cash equivalents, end of period	8,588,000	29,282,000	8,588,000	29,282,000	$ 12,138,000
Non-cash investing activities:
Net transfer of instruments from inventory to property and equipment			183,000	88,000
Non-cash financing activities:
Extinguishment of 5.00% Notes through issuance of common stock			43,000	0
Exchange of 2.50% Notes and accrued interest for 5.00% Convertible Senior Notes (the “5.00% Notes”)			0	56,893,000
Debt premium on issuance of 5.00% Notes			0	6,023,000
Bifurcated derivative liability			0	38,160,000
Supplemental cash flow information:
Interest paid			33,000	0
Convertible Notes
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt discount and issuance costs	$ 1,718,000	$ 510,000	3,314,000	692,000
5.00% Convertible Notes Due 2026 | Convertible Notes
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on extinguishment of debt			$ 0	$ 0
Supplemental cash flow information:
Interest rate	5.00%	5.00%	5.00%	5.00%	5.00%
Nonrelated Party
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt discount and issuance costs			$ 3,314,000	$ 692,000
Loss on extinguishment of debt	$ 0	$ 6,550,000	0	6,550,000
Increase (decrease) in liabilities:
Accrued interest			(20,000)	900,000
Cash flows from financing activities:
Proceeds from issuance of Units			10,232,000	0
Related Party
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt discount and issuance costs			0	1,033,000
Loss on extinguishment of debt	$ 0	$ 6,755,000	0	6,755,000
Increase (decrease) in liabilities:
Accrued interest			0	784,000
Cash flows from financing activities:
Proceeds from issuance of Units			4,750,000	4,000,000
Non-cash financing activities:
Capital contribution from the exchange of secured note and accrued interest through the issuance of common stock with related party			$ 0	$ 25,363,000