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Revenue (Details 3) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2026 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Deferred Revenue, Revenue Recognized | $ 30,481,000 |  |  |  |  |
Telecommunications Services |  |  |  |  |  |
Deferred Revenue, Revenue Recognized | 30,841,000 | $ 439,000 | $ 2,165,000 | $ 4,967,000 | $ 7,699,000 | $ 11,306,000
Desktop Devices |  |  |  |  |  |
Deferred Revenue, Revenue Recognized | $ 242,000 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount of revenue recognized that was previously reported as deferred or unearned revenue. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |