| 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 |
|---|
| Net (loss) income | -3 | -5 | -27 | -9 | -32 | -9 | 21 | 1 | 16 | 28 | 87 | 20 | 12 |
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| (Loss) income from discontinued operations, net of tax | - | - | - | - | - | - | - | - | - | 4 | 30 | 6 | -3 |
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| Net income from continuing operations | - | - | - | - | - | - | - | - | - | 24 | 56 | 14 | 15 |
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| Amount of change in provision for Captive insuarance liability. | - | - | - | - | - | - | - | - | - | - | - | 45 | 34 |
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| Depreciation, Depletion and Amortization | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
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| Deferred income taxes | - | - | - | - | - | - | -13 | 3 | 7 | 1 | -1 | 1 | -2 |
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| Provision for doubtful accounts receivable | - | 1 | 0 | -0 | 0 | 1 | 1 | 1 | 4 | 2 | 3 | 2 | 2 |
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| Stock-based compensation costs | 3 | 4 | 11 | 5 | 5 | 5 | 5 | 1 | 1 | 3 | 3 | 3 | 2 |
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| Additions charged (reversals credited) to expense | - | - | - | - | - | - | - | - | - | - | - | 1 | 0 |
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| Charitable donation of Class B common stock | - | - | - | - | - | - | - | - | - | - | - | 1 | - |
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| Unrealized (gain) loss on marketable equity securities and investments and others | - | - | - | - | - | - | - | - | - | - | - | 0 | 1 |
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| Impairment of assets | - | - | - | - | - | - | 3 | 0 | 1 | - | 2 | - | 0 |
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| Increase (Decrease) In Accounts Receivable | 15 | 3 | -11 | -4 | 6 | 8 | -8 | 12 | 7 | 7 | 16 | 9 | 2 |
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| Increase (Decrease) In Inventories | -1 | 1 | 8 | 0 | -6 | -2 | 5 | 7 | 0 | 1 | -2 | 9 | -1 |
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| Increase (Decrease) In Prepaid Expense | -1 | 0 | 2 | 6 | -8 | 2 | -0 | 0 | -2 | 1 | 3 | 6 | -5 |
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| Increase (Decrease) In Other Operating Assets | 1 | 0 | 3 | 2 | -3 | 4 | -3 | -1 | 3 | 20 | 6 | -0 | 2 |
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| Increase (Decrease) In Accounts Payable and Accrued Liabilities | 6 | 7 | -6 | 4 | -9 | 15 | -7 | 6 | 16 | 12 | 12 | 23 | 3 |
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| Increase (Decrease) In Due To Related Parties, Current | -0 | -0 | 0 | -0 | -0 | 0 | 0 | 0 | -0 | 0 | -0 | -0 | -0 |
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| Increase (Decrease) In Income Taxes Payable | -1 | 1 | -2 | 0 | 2 | -0 | -1 | 0 | 0 | 8 | 13 | -16 | 2 |
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| Net cash provided by operating activities of continuing operations | - | 1 | -19 | -3 | 16 | - | - | - | - | 21 | 66 | 51 | 60 |
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| Net cash provided by operating activities of discontinued operations | - | - | - | - | - | - | - | - | - | 46 | 15 | 12 | 10 |
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| Net Cash Provided by (Used in) Operating Activities | -1 | - | - | - | - | 9 | 19 | 16 | 23 | 67 | 81 | 62 | 71 |
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| Capital expenditures | - | - | - | - | - | - | - | 0 | 0 | 0 | 1 | 1 | 7 |
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| Purchase of solar system facilities | - | - | - | - | - | - | - | - | - | - | - | 8 | 1 |
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| Proceeds from sale of marketable equity securities and other investments | - | - | - | - | - | - | - | - | 1 | 5 | - | 10 | 1 |
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| Purchase of marketable equity securities and other investments | 11 | 0 | - | - | - | - | - | - | 5 | 1 | - | 11 | 6 |
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| Payments to Acquire Additional Interest in Subsidiaries | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
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| Purchase of investment property, net of noncontrolling interest portion paid by Howard Jonas | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
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| Payments to Acquire Notes Receivable | 1 | 1 | 0 | - | - | - | - | - | - | - | 2 | - | - |
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| Repayment of notes receivables with related party | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | - |
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| Net cash used in investing activities of continuing operations | - | 4 | -3 | -32 | -10 | - | - | - | - | 3 | -5 | -10 | -16 |
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| Cash Provided by (Used in) Investing Activities, Discontinued Operations | - | - | - | - | - | - | - | - | - | - | -44 | 24 | - |
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| Net Cash Provided by (Used in) Investing Activities | -18 | - | - | - | - | -17 | -3 | -6 | -3 | 3 | -49 | 14 | -16 |
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| Dividends paid | - | - | - | - | - | - | - | - | 10 | 1 | 9 | 9 | 8 |
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| Restricted Class B common stock purchased from employees | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 6 | 2 | 4 | 4 | 0 | 10 |
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| Repurchases of Class B common stock from employees | - | - | - | - | - | - | - | 0 | 0 | 0 | 1 | 3 | 4 |
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| Payments For Repurchase Of Common Stock From Related Party | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
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| Proceeds from Issuance of Medium-Term Note | - | - | - | - | - | - | - | - | - | - | - | - | 7 |
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| Proceeds from exercise of warrants | - | - | - | - | - | - | - | - | - | - | - | 5 | - |
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| Payments for Repurchase of Redeemable Preferred Stock | - | - | - | - | - | - | - | - | - | - | 11 | 8 | - |
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| Net cash used in financing activities of continuing operations | -14 | - | - | - | - | 2 | -4 | -16 | -15 | -6 | -26 | -15 | -16 |
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| Effect of exchange rate changes on cash, cash equivalents and restricted cash | - | - | - | - | - | - | - | - | - | - | 0 | -0 | 0 |
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| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect | - | - | - | - | - | - | - | - | 5 | 64 | 6 | 61 | 39 |
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| Interest Paid, Net | - | - | - | - | - | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
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| Income Taxes Paid, Net | 0 | 2 | 3 | 0 | 1 | 0 | 2 | 1 | 1 | 0 | 9 | 21 | 4 |
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