UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net loss attributable to shareholders	$ (74,880)	$ (203,230)
Adjustment to reconcile net loss to net cash used in operating activities
Stock-based compensation	4,798	5,667
Depreciation and amortization	2,568	5,151
(Gain) loss on debt extinguishment	(68,478)	3,510
Loss from write-down of property, plant and equipment	336	6,196
Amortization of right-of-use assets	608	481
Change in fair value of debt - related party	240	0
Change in fair value of warrants	5,041	59,363
Change in fair value of derivatives - related parties	47,193	28,360
Other	3,264	640
Changes in operating assets and liabilities:
Prepaid expenses	(206)	939
Inventory	(769)	6,630
Accounts receivable	(1,174)	155
Vendor deposits	837	(5,423)
Contract assets	(4,552)	(106)
Grant receivable	1,763	(826)
Accounts payable	543	(16,196)
Accrued expenses	(1,977)	5,184
Operating lease liabilities	(711)	(540)
Contract liabilities	2,592	(1,471)
Other	2,053	(1,030)
Net cash used in operating activities	(66,807)	(75,582)
Cash flows from investing activities
Purchases of intangible assets	(8)	0
Purchases of property, plant and equipment	(10,291)	(10,100)
Net cash used in investing activities	(10,299)	(10,100)
Cash flows from financing activities
Principal payments on finance lease obligations	(4)	(15)
Proceeds from exercise of options	0	355
Proceeds from issuance of convertible notes - related party	0	48,050
Proceeds from Credit and Securities Purchase Transaction	70,075	0
Payment of equity issuance costs	0	(2,080)
Repayment of equipment financing facility	(1,601)	(1,381)
Proceeds from issuance of common stock	14,089	0
Proceeds from issuance of common stock and warrants - related party	0	49,250
Repurchase of shares from employees for income tax withholding purposes	(351)	(451)
Net cash provided by financing activities	50,024	92,612
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(6)	3
Net decrease in cash, cash equivalents and restricted cash	(27,088)	6,933
Cash, cash equivalents and restricted cash, beginning of the period	84,667	31,223
Cash, cash equivalents and restricted cash, end of the period	57,579	38,156
Non-cash investing and financing activities
Accrued and unpaid capital expenditures	3,578	0
Issuance of convertible notes for interest paid in kind	5,783	4,915
Right-of-use operating lease assets in exchange for lease liabilities	0	363
Issuance of common stock upon settlement of Yorkville convertible notes	0	51,023
Accrued and unpaid capitalized internal-use software	0	130
Supplemental disclosures
Cash paid for interest	4,131	7,434
Nonrelated Party
Adjustment to reconcile net loss to net cash used in operating activities
Non-cash interest expense	5,117	2,469
Cash flows from financing activities
Payoff of Senior Secured Term Loan	(19,946)	0
Related Party
Adjustment to reconcile net loss to net cash used in operating activities
Non-cash interest expense	8,987	28,495
Change in fair value of derivatives - related parties	47,193	28,360
Cash flows from financing activities
Payment of debt issuance costs - related party	$ (12,238)	$ (1,116)