| Dec 31, 2011 | Dec 31, 2012 | 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) | 26 | 6 | -7 | -1 | -3 | 5 | 10 | 11 | -2 | 5 | 17 | 19 | -19 | -12 |
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| Depreciation and amortization | - | 4 | 5 | 6 | 5 | 5 | 4 | 5 | 6 | 4 | 7 | 8 | 9 | 9 |
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| Amortization of marketable securities premium | -0 | -0 | -1 | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 | - |
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| Stock-based compensation | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 5 | 4 | 4 | 3 |
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| Provision for credit losses | - | - | 1 | 0 | 0 | 0 | - | - | - | 0 | - | -0 | 0 | - |
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| Loss on sale of equity investment | - | - | - | - | - | - | - | - | - | - | - | - | -0 | - |
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| (Gain) loss on disposal of equipment | -0 | -0 | 0 | 0 | -0 | -0 | -0 | 0 | -0 | -0 | 0 | 0 | -0 | -0 |
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| Equity Method Investment Returns or Dividends | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 4 | 2 |
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| Equity in income of unconsolidated joint ventures | - | - | - | - | - | - | - | -1 | -1 | 0 | 4 | 6 | 2 | 3 |
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| Deferred tax assets | - | - | - | - | - | - | - | - | - | - | 2 | 0 | 1 | 0 |
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| Accounts receivable | -5 | -0 | -2 | 3 | 1 | -3 | 8 | -3 | -0 | 5 | 10 | -5 | -9 | 7 |
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| Inventories | 10 | -6 | -1 | -0 | 0 | 3 | 5 | 15 | -9 | 1 | 12 | 31 | -1 | 1 |
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| Prepaid expenses and other current assets | 3 | -2 | 1 | -2 | -1 | 1 | 2 | 5 | -3 | 7 | 1 | 3 | 1 | 6 |
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| Other assets | -0 | 0 | 2 | 0 | -1 | -0 | 0 | 2 | 1 | 0 | 6 | 0 | -0 | -1 |
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| Accounts payable | - | 3 | 2 | -1 | -0 | 1 | 4 | 2 | -3 | 2 | 4 | -6 | -0 | 3 |
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| Accrued liabilities | -0 | 0 | -1 | 1 | -1 | 0 | 2 | 1 | -4 | 3 | -3 | -2 | -2 | 1 |
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| Other long-term liabilities | -1 | -1 | -0 | -1 | -1 | -1 | -0 | -0 | 0 | 2 | -1 | 3 | -1 | -3 |
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| Net cash provided by (used in) operating activities | 18 | 21 | 3 | - | - | - | 9 | 3 | 13 | 6 | -3 | -9 | 3 | -12 |
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| Purchases of property, plant and equipment | 13 | 7 | 5 | 2 | 4 | 3 | 21 | 41 | 22 | 20 | 30 | 28 | 10 | 6 |
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| Purchases of available-for-sale debt securities | - | - | - | - | - | - | - | 10 | 9 | 6 | 10 | 2 | - | - |
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| Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale | - | 7 | 12 | 14 | 14 | 14 | 15 | 20 | 22 | 9 | 0 | 5 | 10 | 2 |
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| Proceeds from Sale of Equity Method Investments | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - |
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| Investments in non-marketable equity investments | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 1 |
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| Net cash used in investing activities | -15 | -13 | -6 | - | - | - | -36 | -31 | -8 | -16 | -39 | -25 | -3 | -4 |
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| Proceeds from Stock Options Exercised | 1 | 0 | 1 | 0 | 0 | 1 | 34 | 1 | 0 | 3 | 2 | 1 | 0 | 0 |
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| Proceeds from Short-Term Debt | - | - | - | - | - | - | - | - | - | - | 21 | 53 | 56 | 55 |
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| Payments on short-term bank loans | - | - | - | - | - | - | - | - | - | - | 19 | 18 | 49 | 60 |
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| Proceeds From Capital Increase In Subsidiary Shares From Noncontrolling Interest | - | - | - | - | - | - | - | - | - | - | - | 2 | 1 | - |
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| Proceeds from long-term loan | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 6 |
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| Payments on long-term loan | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
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| Net cash provided by (used in) financing activities | -1 | -4 | -3 | - | - | - | 36 | 0 | 6 | 53 | 6 | 38 | 9 | -1 |
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| Effect of exchange rate changes on cash, restricted cash and cash equivalents | - | - | - | - | - | - | - | -0 | -0 | 4 | 1 | 1 | -1 | 1 |
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| Net increase (decrease) in cash, restricted cash and cash equivalents | - | - | - | - | - | - | - | -28 | 10 | 46 | -36 | 5 | 9 | -16 |
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| Income Taxes Paid, Net | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 |
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| Interest expense paid | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 2 |
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| Proceeds From Loan By Notes | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - |
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| Notes receivables paid to purchase fixed assets | - | - | - | - | - | - | - | - | - | - | - | 7 | 4 | 5 |
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| Non-cash consideration received from sale of DongFang | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - |
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| Debt Conversion, Original Debt, Amount | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - |
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| Non Controlling Interests, Investments in Subsidiary | - | - | - | - | - | - | - | - | - | - | - | 1 | 0 | - |
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| Loan Proceeds Paid Directly To Third Party, Included In Accounts Payable | - | - | - | - | - | - | - | - | - | - | - | 0 | - | - |
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| Sale of Land and Building to Unconsolidated Joint Venture | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - |
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| Construction in Progress Expenditures Incurred but Not yet Paid | - | - | - | - | - | - | - | 3 | 1 | 1 | 3 | 4 | 7 | 1 |
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