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Fair Value Measurements - Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Total assets at fair value | $ 2,625,648 | $ 1,961,455
Marketable Equity Securities |  |
Assets |  |
Total assets at fair value | 2,625,648 | 1,961,451
Interest Rate Cap Derivative |  |
Assets |  |
Total assets at fair value |  | 4
Level 1 |  |
Assets |  |
Total assets at fair value | 2,625,648 | 1,961,451
Level 1 | Marketable Equity Securities |  |
Assets |  |
Total assets at fair value | $ 2,625,648 | 1,961,451
Level 2 |  |
Assets |  |
Total assets at fair value |  | 4
Level 2 | Interest Rate Cap Derivative |  |
Assets |  |
Total assets at fair value |  | $ 4

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- 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=123874694&loc=d3e19207-110258 + Details
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