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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Cash flows used in operating activities:        
Net loss $ (13,889) $ (8,982) $ (27,798) $ (31,042)
Adjustments to reconcile net loss for the period to net cash used in operating activities:        
Non-cash portion of interest expense – Note 9     6,000 6,937
(Gain) loss on fair value adjustment for warrant liabilities – Note 13 (59) (3,706) (181) 1,615
Gain on settlement of accrued liability – Note 8 (1,151) 0 (1,151) 0
Depreciation and amortization – Note 5     1,429 1,552
Stock-based compensation     1,560 1,023
Accretion – Note 12 186 102 372 204
Gain on sale of equipment (85) 23 (85) (602)
Changes in operating assets and liabilities:        
Accounts receivable     2,771 0
Interest receivable     (80) 0
Production-related inventories     0 3,935
Materials and supplies inventories, net     13 315
Prepaids     (1,763) (2,468)
Accounts payable and accrued expenses     (2,426) (1,634)
Contract liabilities – Notes 7 and 10     100 0
Other liabilities     (1,195) (1,918)
Net cash used in operating activities     (22,434) (22,083)
Cash flows (used in) provided by investing activities:        
Additions to property, plant and equipment     (726) (490)
Proceeds from sale of equipment     103 1,383
Proceeds from assets held for sale     0 1,890
Net cash (used in) provided by investing activities     (623) 2,783
Cash flows (used in) provided by financing activities:        
Principal payments on debt     (1,100) (24,956)
Principal payments on notes payable     (63) (62)
Proceeds from issuance of common stock and warrants, net of issuance costs – Note 14     0 188,974
Net cash (used in) provided by financing activities     (1,163) 163,956
Net (decrease) increase in cash, cash equivalents, and restricted cash     (24,220) 144,656
Cash, cash equivalents, and restricted cash, beginning of period     175,966 46,635
Cash, cash equivalents, and restricted cash, end of period 151,746 191,291 151,746 191,291
Reconciliation of cash, cash equivalents, and restricted cash:        
Cash and cash equivalents 117,064 157,781 117,064 157,781
Restricted cash 34,682 33,510 34,682 33,510
Total cash, cash equivalents, and restricted cash $ 151,746 $ 191,291 $ 151,746 $ 191,291