| Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | 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 | 3 | 1 | 1 | 7 | 9 | 43 | 62 | 6 | 14 | 12 | 10 | 11 | 19 |
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| Short-term bank deposits | - | - | - | - | - | - | - | 63 | 55 | 59 | 64 | 71 | 75 |
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| Trade receivables, net | 5 | 3 | 6 | 5 | 4 | 4 | 20 | 11 | 12 | 10 | 11 | 13 | 19 |
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| Inventories | 7 | 7 | 4 | 3 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 2 |
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| Other accounts receivable and prepaid expenses, total | - | - | - | - | - | - | - | - | - | - | 2 | 2 | 2 |
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| Total current assets | 18 | 16 | 16 | 16 | 16 | 50 | 84 | 83 | 83 | 83 | 87 | 97 | 117 |
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| Severance pay fund | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 3 |
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| Other long-term assets | - | - | - | - | - | - | - | - | - | - | - | 2 | 3 |
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| Property, Plant and Equipment, Net | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
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| Operating lease right-of-use assets | - | - | - | - | - | - | - | 6 | 3 | 2 | 2 | 2 | 3 |
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| Balance as of beginning of the year | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 |
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| Intangible assets, net | - | - | - | - | - | - | - | - | - | - | - | 2 | 1 |
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| Total non-current assets | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 13 | 10 | 8 | 14 | 10 | 13 |
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| Total assets | 21 | 19 | 20 | 20 | 20 | 55 | 90 | 96 | 94 | 92 | 101 | 108 | 131 |
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| Trade payables | 3 | 2 | 2 | 2 | 1 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 2 |
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| Employees and payroll accruals | - | 2 | 2 | 2 | 3 | 4 | 3 | 4 | 4 | 4 | 5 | 5 | 7 |
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| Deferred revenues and advances from customers | - | - | - | - | - | - | - | - | - | - | - | - | 7 |
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| Current maturities of lease liabilities | - | - | - | - | - | - | - | 1 | - | - | - | 1 | 1 |
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| Other liabilities and accrued expenses | - | - | - | - | - | - | - | 4 | 5 | 5 | 7 | 10 | 10 |
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| Total current liabilities | 8 | 10 | 8 | 6 | 6 | 11 | 8 | 13 | 15 | 16 | 23 | 20 | 28 |
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| Accrued severance pay | 3 | 4 | 4 | 3 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
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| Operating lease liabilities | - | - | - | - | - | - | - | 5 | 2 | 1 | 1 | 1 | 2 |
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| Other liabilities and accrued expenses | - | - | - | - | - | - | - | 1 | 0 | 0 | - | 1 | 1 |
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| Total non-current liabilities | 3 | 4 | 4 | 4 | 4 | 3 | 4 | 10 | 7 | 5 | 5 | 5 | 7 |
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| Total liabilities | 11 | 14 | 12 | 10 | 10 | 14 | 11 | 23 | 22 | 22 | 28 | 25 | 35 |
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| Ordinary Shares of NIS 0.20 par value: Authorized: 20,000,000 shares at December 31, 2024 and 2023; 15,951,648 and 15,343,764 shares issued and 15,915,616 and 15,307,732 shares outstanding at December 31, 2024 and 2023, respectively | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Additional paid-in capital | 61 | 61 | 66 | 68 | 70 | 98 | 136 | 138 | 140 | 143 | 149 | 155 | 161 |
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| Accumulated other comprehensive loss | -0 | -0 | -1 | -1 | -3 | -3 | -3 | -3 | -3 | -3 | -3 | -3 | -3 |
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| Accumulated deficit | -50 | -56 | -58 | -57 | -58 | -56 | -55 | -62 | -66 | -71 | -74 | -70 | -63 |
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| Total shareholders’ equity | 10 | 5 | 7 | 10 | 10 | 40 | 78 | 74 | 72 | 70 | 73 | 82 | 96 |
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| Total liabilities and shareholders’ equity | 21 | 19 | 20 | 20 | 20 | 55 | 90 | 96 | 94 | 92 | 101 | 108 | 131 |
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