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Significant Accounting Policies - Summary of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Finite Lived Intangible Assets [Line Items] |  |
Intangible assets, Gross Carrying Amount | $ 972 | $ 646
Intangible assets, Accumulated Amortization | $ (445) | (64)
Customer Relationships |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible assets, Useful Life | 1 year 3 months |
Intangible assets, Gross Carrying Amount | $ 237 | 423
Intangible assets, Accumulated Amortization | $ (228) | (55)
Acquired Proprietary Software |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible assets, Useful Life | 5 years |
Intangible assets, Gross Carrying Amount | $ 150 | 148
Intangible assets, Accumulated Amortization | $ (35) | (5)
Reacquired Rights |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible assets, Useful Life | 3 years 10 months 13 days |
Intangible assets, Gross Carrying Amount | $ 503 |
Intangible assets, Accumulated Amortization | $ (152) |
Internally Developed Software |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible assets, Useful Life | 3 years |
Intangible assets, Gross Carrying Amount | $ 82 | 75
Intangible assets, Accumulated Amortization | $ (30) | $ (4)

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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