| Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 |
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Net income (loss) | 1 | -6 | -3 | 1 | 1 | 5 | 2 | -1 | -4 | -1 | -1 |
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Depreciation and amortization | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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Equipment transferred to cost of goods sold | - | - | - | - | - | - | - | - | - | - | 0 |
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Share-based compensation | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
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Trade accounts receivable | 1 | 2 | 1 | 2 | -1 | -1 | 0 | 0 | -2 | -2 | -1 |
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Inventories | -0 | -0 | 0 | 1 | -1 | -0 | 1 | -0 | 0 | -1 | -1 |
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Other current assets | -0 | 0 | 0 | 0 | 0 | 0 | -0 | 0 | 0 | 1 | 0 |
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Accounts payable and accrued liabilities | -1 | -1 | -0 | 1 | 0 | 2 | -0 | -2 | -0 | 0 | -0 |
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Deferred revenue | -0 | -0 | -0 | 1 | -1 | -0 | -0 | -0 | -0 | 1 | 0 |
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Other long-term liabilities | 0 | -0 | -0 | -0 | 0 | -0 | -0 | -0 | -0 | 0 | -1 |
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Deposits and other long-term assets | 0 | - | - | - | - | 1 | 0 | 0 | -1 | 1 | 1 |
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Net cash provided by (used in) operating activities | 3 | -1 | 0 | 1 | 3 | 9 | 2 | -2 | 1 | 1 | -1 |
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Purchases of property, plant and equipment | 1 | -0 | -1 | -1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 |
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Cash provided by (used in) investing activities | -3 | 0 | 1 | 1 | -1 | -2 | -1 | -1 | -1 | -1 | -1 |
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Net proceeds from issuance of common stock, less payments for shares withheld to cover tax | - | - | - | - | - | - | - | - | - | - | -0 |
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Cash provided by (used in) financing activities | -0 | 6 | 0 | 0 | 0 | -1 | -1 | -2 | -0 | -0 | -0 |
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Increase (decrease) in cash and cash equivalents | - | - | - | - | - | - | - | - | - | 0 | -2 |
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Effects of exchange rate changes on cash | - | - | - | - | - | - | - | - | - | - | -0 |
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Income taxes | - | - | - | - | - | - | - | - | - | - | 1 |
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