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Fair Value Measurements - Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Total assets at fair value | $ 1,788,728 | $ 1,761,363
Marketable Equity Securities |  |
Assets |  |
Total assets at fair value | 1,788,714 | 1,761,312
Interest Rate Cap Derivative |  |
Assets |  |
Total assets at fair value | 14 | 51
Level 1 |  |
Assets |  |
Total assets at fair value | 1,788,714 | 1,761,312
Level 1 | Marketable Equity Securities |  |
Assets |  |
Total assets at fair value | 1,788,714 | 1,761,312
Level 2 |  |
Assets |  |
Total assets at fair value | 14 | 51
Level 2 | Interest Rate Cap Derivative |  |
Assets |  |
Total assets at fair value | $ 14 | $ 51

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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=117815213&loc=d3e19207-110258 + Details
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