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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Operating activities: |  |  |
Net income (loss) | $ 289,004,000 | $ 135,037,000 | $ (21,825,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Depreciation, depletion and amortization | 18,356,000 | 24,382,000 | 6,931,000
Accretion of asset retirement and environmental obligations | 1,477,000 | 2,375,000 | 2,255,000
Accretion of discount on short-term investments | (9,958,000) | 0 | 0
Gain on forgiveness of Paycheck Protection Loan | 0 | (3,401,000) | 0
Loss on sale or disposal of long-lived assets, net | 391,000 | 569,000 | 101,000
Stock-based compensation expense | 31,780,000 | 22,931,000 | 5,014,000
Accretion of debt discount and amortization of debt issuance costs | 4,034,000 | 7,384,000 | 3,146,000
Write-down of inventories | 0 | 1,809,000 | 0
Non-cash settlement charge | 0 | 0 | 66,615,000
Revenue recognized in exchange for debt principal reduction | (13,566,000) | (54,828,000) | (21,312,000)
Deferred income taxes | 17,789,000 | 17,425,000 | (17,792,000)
Decrease (increase) in operating assets: |  |  |
Accounts receivable (including related party) | 18,153,000 | (47,420,000) | (3,219,000)
Inventories | (24,314,000) | (8,229,000) | (9,224,000)
Income taxes receivable | (2,201,000) | 0 | 0
Prepaid expenses, other current and non-current assets | (6,022,000) | (4,154,000) | 1,794,000
Increase (decrease) in operating liabilities: |  |  |
Accounts payable and accrued liabilities | 1,962,000 | 5,530,000 | (3,848,000)
Income taxes payable | 17,700,000 | 3,463,000 | 0
Refund liability to related party | 0 | 0 | (2,746,000)
Deferred revenue from related party | 0 | 0 | 1,933,000
Other current and non-current liabilities | (1,071,000) | (902,000) | (4,546,000)
Net cash provided by operating activities | 343,514,000 | 101,971,000 | 3,277,000
Investing activities: |  |  |
Additions to property, plant and equipment | (326,595,000) | (123,870,000) | (22,370,000)
Purchases of short-term investments | (2,779,666,000) | 0 | 0
Proceeds from sales of short-term investments | 1,463,160,000 | 0 | 0
Proceeds from maturities of short-term investments | 281,000,000 | 0 | 0
Proceeds from sale of property, plant and equipment | 0 | 125,000 | 0
Proceeds from government awards used for construction | 5,130,000 | 4,382,000 | 0
Net cash used in investing activities | (1,356,971,000) | (119,363,000) | (22,370,000)
Financing activities: |  |  |
Proceeds from issuance of long-term debt | 0 | 690,000,000 | 3,364,000
Proceeds from Second Additional Advance | 0 | 0 | 35,450,000
Proceeds from Business Combination, including PIPE Financing | 0 | 0 | 544,712,000
Principal payments on debt obligations and finance leases | (5,834,000) | (2,435,000) | (20,180,000)
Payment of underwriting and transaction costs | 0 | 0 | (40,325,000)
Payment of debt issuance costs | 0 | (17,749,000) | 0
Tax withholding on stock-based awards | (18,357,000) | (3,330,000) | (996,000)
Other | 0 | (377,000) | (64,000)
Net cash provided by (used in) financing activities | (24,191,000) | 666,109,000 | 521,961,000
Net change in cash, cash equivalents and restricted cash | (1,037,648,000) | 648,717,000 | 502,868,000
Cash, cash equivalents and restricted cash beginning balance | 1,181,157,000 | 532,440,000 | 29,572,000
Cash, cash equivalents and restricted cash ending balance | 143,509,000 | 1,181,157,000 | 532,440,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |  |  |
Cash and cash equivalents | 136,627,000 | 1,179,297,000 | 519,652,000
Restricted cash, current | 6,287,000 | 1,344,000 | 3,688,000
Restricted cash, non-current | 595,000 | 516,000 | 9,100,000
Total cash, cash equivalents and restricted cash | $ 143,509,000 | $ 1,181,157,000 | $ 532,440,000

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