Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (15,225)	$ (10,544)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	446	601
Impairment charges	0	1,008
Share-based compensation	1,286	(9,199)
Change in fair value of warrants	24	(304)
Change in fair value of contingent consideration	0	1,125
Deferred income taxes	2	0
Non-cash operating lease expense	458	400
Other non-cash operating activities	(119)	(677)
Changes in assets and liabilities:
Receivables, net	(1,331)	(1,497)
Inventories, net	133	(458)
Prepaid and other current assets	(1,147)	(1,786)
Trade payables and accrued liabilities	135	(3,084)
Contract liabilities	1,308	705
Change in contract loss provisions, net	(824)	(77)
Other non-current assets and liabilities	541	(345)
Net cash used in operating activities	(14,313)	(24,132)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(150)	(527)
Purchases of available-for-sale securities	0	(44,520)
Maturities of available-for-sale securities	10,000	62,300
Net cash provided by investing activities	9,850	17,253
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	0	248
Payment related to taxes for net-share settlement of share-based compensation	(17)	0
Net cash provided by (used in) financing activities	(17)	248
Decrease in cash, cash equivalents and restricted cash	(4,480)	(6,631)
Cash, cash equivalents and restricted cash at the beginning of the period	64,215	47,874
Cash, cash equivalents and restricted cash at the end of the period	59,735	41,243
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	58,235	39,215
Short-term restricted cash	500	528
Long-term restricted cash	1,000	1,500
Total cash, cash equivalents and restricted cash	59,735	41,243
Non-cash investing and financing activities:
Fair value of Project Warrants and Collaboration Warrants recognized in equity	51	76
Capital expenditures incurred but not yet paid	$ 65	$ 56

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