Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
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-Topic 210
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-Section 55
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- References

No definition available.

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Fair Value Measurements (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Financial Liabilities:
Common stock warrant liability
Total
Fair Value Measurements, Recurring [Member]
Financial Assets:
Total
Financial Liabilities:
Common stock warrant liability
Total
Fair Value Measurements, Recurring [Member] \| Money Market Funds [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Fair Value Measurements, Recurring [Member] \| Corporate Fixed Income Debt Securities [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 1 [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Financial Liabilities:
Common stock warrant liability
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 1 [Member] \| Money Market Funds [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 1 [Member] \| Corporate Fixed Income Debt Securities [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 2 [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Financial Liabilities:
Common stock warrant liability
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 2 [Member] \| Money Market Funds [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 2 [Member] \| Corporate Fixed Income Debt Securities [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 3 [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Financial Liabilities:
Common stock warrant liability
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 3 [Member] \| Money Market Funds [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total
Fair Value Measurements, Recurring [Member] \| Fair Value Inputs, Level 3 [Member] \| Corporate Fixed Income Debt Securities [Member]
Financial Assets:
Held-to-maturity Securities, Fair Value
Total