| Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Cash and cash equivalents | 22 | 6 | 25 | 30 | 62 | 97 | 101 | 120 | 93 | 170 |
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| Short-term investments | - | - | - | 111 | 112 | 308 | 313 | 233 | 202 | 149 |
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| Accounts receivable, net | 8 | 14 | 17 | 19 | 38 | 36 | 33 | 36 | 40 | 61 |
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| Inventory | 4 | 7 | 11 | 13 | 43 | 16 | 23 | 38 | 42 | 58 |
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| Prepaid expenses and other current assets | 1 | 3 | 3 | 4 | 8 | 13 | 16 | 17 | 18 | 12 |
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| Total current assets | 104 | 120 | 149 | 177 | 263 | 469 | 486 | 444 | 395 | 450 |
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| Restricted cash | - | - | - | - | 9 | 10 | 9 | 7 | 6 | 5 |
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| Property and equipment, net | 2 | 8 | 12 | 19 | 22 | 24 | 69 | 94 | 103 | 98 |
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| Operating lease right-of-use assets | - | - | - | - | 16 | 20 | 28 | 26 | 27 | 30 |
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| Finance lease right-of-use asset | - | - | - | - | 54 | 51 | 49 | 47 | 44 | 42 |
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| Intangible assets, net | 10 | 7 | 3 | - | 383 | 358 | 333 | 308 | 283 | 263 |
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| Goodwill | - | - | - | - | 66 | 66 | 66 | 66 | 66 | 66 |
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| Deposits and other assets | 0 | 0 | 1 | 2 | 6 | 7 | 9 | 11 | 15 | 21 |
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| Total assets | 117 | 134 | 166 | 207 | 818 | 1,006 | 1,050 | 1,002 | 940 | 975 |
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| Accounts payable | 4 | 3 | 6 | 6 | 6 | 4 | 7 | 14 | 13 | 13 |
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| Accrued liabilities | 8 | 14 | 20 | 24 | 52 | 45 | 56 | 58 | 61 | 62 |
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| Total current liabilities | 20 | 17 | 27 | 30 | 58 | 50 | 63 | 72 | 74 | 75 |
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| Convertible senior notes | - | - | - | - | - | 189 | 280 | 281 | 283 | - |
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| Operating lease liability | - | - | - | - | 14 | 21 | 30 | 29 | 30 | 34 |
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| Finance lease liability | - | - | - | - | 58 | 61 | 73 | 72 | 71 | 69 |
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| Deferred tax liability, net | - | - | - | - | 10 | 11 | 7 | 7 | 7 | 7 |
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| Other liabilities | 0 | 0 | 1 | 3 | 5 | 7 | 9 | 10 | 14 | 22 |
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| Total liabilities | 21 | 17 | 28 | 33 | 145 | 338 | 463 | 472 | 479 | 208 |
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| Common Stock, Value, Issued | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Additional paid-in capital | 292 | 309 | 331 | 378 | 862 | 977 | 952 | 997 | 1,060 | 1,510 |
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| Accumulated other comprehensive income | 0 | 1 | -1 | 1 | 1 | 1 | 0 | -3 | 1 | 3 |
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| Accumulated deficit | -197 | -192 | -192 | -205 | -190 | -310 | -365 | -464 | -599 | -745 |
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| Less treasury stock (28 shares as of December 31, 2024 and 2023) | - | - | - | - | - | - | - | 0 | 0 | 0 |
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| Total stockholders' equity | 95 | 117 | 138 | 174 | 673 | 667 | 587 | 530 | 462 | 767 |
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| Total liabilities and stockholders' equity | 117 | 134 | 166 | 207 | 818 | 1,006 | 1,050 | 1,002 | 940 | 975 |
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