Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2020 |
Dec. 31, 2019 |
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| Capitalized patent costs, unissued | $ 284 | $ 198 |
| Amortization expense related to intangible assets | $ 81 | $ 90 |
| Patents [Member] | ||
| Weighted average amortization period | 10 years 2 months 12 days | |
| FCC Licenses [Member] | ||
| Weighted average amortization period | 3 years 1 month 6 days | |
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- Definition Finite lived intangible assets capitalized patent costs, unissued. No definition available.
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average period before the next renewal or extension (both explicit and implicit) for intangible assets that have been renewed or extended, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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