Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Details)

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Fair Value Measurements - Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Assets    
Total assets at fair value $ 1,761,363 $ 1,572,496
Marketable Equity Securities    
Assets    
Total assets at fair value 1,761,312 1,567,607
Interest Rate Cap    
Assets    
Total assets at fair value 51 4,889
Level 1    
Assets    
Total assets at fair value 1,761,312 1,567,607
Level 1 | Marketable Equity Securities    
Assets    
Total assets at fair value 1,761,312 1,567,607
Level 2    
Assets    
Total assets at fair value 51 4,889
Level 2 | Interest Rate Cap    
Assets    
Total assets at fair value $ 51 $ 4,889