XML 75 R46.htm IDEA: XBRL DOCUMENT
v3.20.4

Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Total financial assets |  | $ 0
Fair Value Measurements, Recurring |  |
Assets |  |
Total financial assets | $ 9,981,000 |
Fair Value Measurements, Recurring | U.S. Treasury Notes |  |
Assets |  |
Total financial assets | 7,526,000 |
Fair Value Measurements, Recurring | Quoted Prices in Active Markets for identical Assets (Level 1) |  |
Assets |  |
Total financial assets | 9,981,000 |
Fair Value Measurements, Recurring | Quoted Prices in Active Markets for identical Assets (Level 1) | U.S. Treasury Notes |  |
Assets |  |
Total financial assets | 7,526,000 |
Fair Value Measurements, Recurring | Money Market Funds |  |
Assets |  |
Total financial assets | 2,455,000 |
Fair Value Measurements, Recurring | Money Market Funds | Quoted Prices in Active Markets for identical Assets (Level 1) |  |
Assets |  |
Total financial assets | $ 2,455,000 |

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USTreasuryNotesSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |