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Stock-Based Compensation - Stock-based Compensation Expense (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Stock-based compensation expense | $ 8,916 | $ 16,523
Cost of Revenues [Member] |  |
Stock-based compensation expense | 371 | 1,479
Selling, General and Administrative Expenses [Member] |  |
Stock-based compensation expense | 7,862 | 13,946
Engineering And Development [Member] |  |
Stock-based compensation expense | $ 683 | $ 1,098

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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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