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Summary of Significant Accounting Policies - Property Plant and Equipment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Property, Plant and Equipment
Loss on disposal of leasehold improvements	$ (672,000)	$ 0
Loss on disposal of property and equipment	672,000	0
Impairment of property, plant and equipment	$ 0	$ 0
Office equipment
Property, Plant and Equipment
Property, plant and equipment (useful life)	3 years
Lab equipment | Minimum
Property, Plant and Equipment
Property, plant and equipment (useful life)	5 years
Lab equipment | Maximum
Property, Plant and Equipment
Property, plant and equipment (useful life)	10 years
Furniture and fixtures
Property, Plant and Equipment
Property, plant and equipment (useful life)	5 years

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- Definition

Gain (Loss) on Disposition of Leasehold Improvements

+ References

No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ 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 (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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-Topic 230
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-Topic 360
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-Section 45
-Paragraph 4
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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