| Dec 31, 2013 | Dec 31, 2014 | 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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| Net income (loss) | - | - | - | - | - | - | - | -35 | -76 | -37 | -74 | 24 |
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| Depreciation and amortization | 1 | 1 | 2 | 4 | 4 | 4 | 4 | 8 | 20 | 26 | 27 | 23 |
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| Loss on disposal of property, plant and equipment | - | - | - | -0 | -0 | - | 0 | - | - | -0 | -0 | -0 |
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| Stock-based compensation | - | - | 6 | 6 | 7 | 6 | 10 | 13 | 23 | 27 | 33 | 36 |
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| Deferred income taxes | - | - | - | - | - | - | - | - | - | - | -4 | -0 |
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| Interest on end-of-term debt obligation | - | - | - | - | - | - | - | - | 0 | 0 | - | - |
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| Noncash lease expense | - | - | - | - | - | - | - | - | 2 | 3 | 4 | 5 |
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| Revaluation of acquisition-related contingent consideration | - | - | - | - | - | - | - | 2 | 1 | 0 | -5 | 2 |
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| Impairment loss | - | - | - | - | - | - | - | - | - | - | 68 | 3 |
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| Effect of foreign currency on operations | - | - | - | - | - | - | - | 0 | -1 | -1 | 1 | -2 |
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| Accounts receivable | 1 | 2 | 1 | 5 | 4 | 0 | 6 | -1 | 9 | 4 | -4 | 6 |
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| Supplies and inventory | 2 | 1 | 0 | -0 | 2 | -2 | 3 | -1 | 1 | 3 | 2 | 6 |
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| Prepaid expenses and other current assets | 1 | 0 | -0 | 0 | 0 | 1 | -0 | 1 | 3 | -1 | 0 | 1 |
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| Other assets | -0 | 0 | 0 | -0 | 0 | 1 | 0 | -0 | 0 | 3 | 1 | 2 |
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| Operating lease liability | - | - | - | - | - | - | - | -1 | -2 | -3 | -4 | -5 |
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| Accounts payable | 3 | 2 | -4 | -1 | 2 | -2 | -0 | 1 | 5 | 0 | -0 | -4 |
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| Accrued liabilities and deferred revenue | - | - | - | - | - | - | - | - | 14 | -4 | -1 | 4 |
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| Net cash provided by operating activities | - | - | - | - | -24 | -14 | -3 | -10 | -32 | 8 | 44 | 75 |
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| Purchase of short-term investments | - | - | - | - | - | - | - | - | - | 34 | 20 | 50 |
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| Proceeds from sale of short-term investments | - | - | - | - | - | - | - | - | - | - | 40 | - |
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| Proceeds from maturity of short-term investments | - | - | - | - | - | - | - | - | - | - | 5 | - |
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| Acquisition of C2i, net of cash acquired | - | 7 | - | - | -0 | - | - | - | 574 | - | - | -5 |
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| Purchases of property, plant and equipment | 1 | 2 | 6 | 4 | 2 | 2 | 3 | 3 | 5 | 9 | 10 | 11 |
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| Net cash provided by (used in) investing activities | - | - | - | - | -1 | -2 | -43 | -4 | -739 | -29 | 15 | -56 |
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| Payment of contingent consideration for acquisition | - | - | - | - | - | - | - | - | - | - | - | 5 |
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| Payment of long-term debt | - | - | - | 5 | 25 | - | 25 | 0 | - | 1 | - | - |
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| Payment of taxes on vested restricted stock units | - | - | - | - | - | - | - | 4 | 9 | 3 | 7 | 11 |
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| Proceeds from Stock Options Exercised | 1 | 1 | 1 | 1 | 2 | 4 | 15 | 14 | 12 | 8 | 10 | 20 |
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| Net cash provided by financing activities | - | - | - | - | -0 | 59 | 127 | 204 | 596 | 3 | 3 | 5 |
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| Increase (decrease) in cash, cash equivalents and restricted cash | - | - | - | - | - | - | - | - | -175 | -18 | 62 | 24 |
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| Effect of foreign currency on cash, cash equivalents and restricted cash | - | - | - | - | - | - | - | - | -2 | -1 | 0 | -0 |
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| Net increase (decrease) in cash, cash equivalents and restricted cash | - | - | - | - | - | 44 | 81 | 190 | -176 | -19 | 62 | 23 |
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| Capital Expenditures Incurred but Not yet Paid | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | - | 1 | 1 |
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| Cash paid for interest on debt | - | - | - | - | - | 2 | 0 | 0 | 0 | 0 | - | - |
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| Cash paid for tax | - | - | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 |
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