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Stock Compensation - Schedule of Stock Compensation Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Total stock compensation expense | $ 1,628 | $ 1,138
Warrants [Member] |  |
Total stock compensation expense | 2 | 295
Stock Options [Member] |  |
Total stock compensation expense | 1,205 | 778
Restricted Stock Units [Member] |  |
Total stock compensation expense | 421 |
Class A Common Stock Grants [Member] |  |
Total stock compensation expense |  | $ 65

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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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