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Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Property, Plant and Equipment, Gross | $ 711 | $ 539
Accumulated depreciation and amortization | 522 | 466
Property and equipment, net | 189 | 73
Computer Hardware And Software [Member] |  |
Property, Plant and Equipment, Gross | 218 | 55
Accumulated depreciation and amortization | $ 55 | 55
Computer Hardware And Software [Member] | Minimum [Member] |  |
Estimated Useful Life (in years) | 3 years |
Computer Hardware And Software [Member] | Maximum [Member] |  |
Estimated Useful Life (in years) | 5 years |
Equipment [Member] |  |
Estimated Useful Life (in years) | 7 years |
Property, Plant and Equipment, Gross | $ 151 | 145
Accumulated depreciation and amortization | $ 142 | 120
Leasehold Improvements [Member] |  |
Estimated Useful Lives | Term of lease |
Property, Plant and Equipment, Gross | $ 339 | 339
Accumulated depreciation and amortization | $ 325 | 291
Intangible Asset [Member] |  |
Estimated Useful Lives | Patent term |
Property, Plant and Equipment, Gross | $ 3 |
Accumulated depreciation and amortization |  |

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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