Fair Value Measurements - Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring	Jun. 30, 2019 USD ($)
Assets
Total assets at fair value	$ 1,795,409
Marketable Equity Securities
Assets
Total assets at fair value	1,794,889
Interest Rate Cap Derivative
Assets
Total assets at fair value	520
Level 1
Assets
Total assets at fair value	1,794,889
Level 1 | Marketable Equity Securities
Assets
Total assets at fair value	1,794,889
Level 2
Assets
Total assets at fair value	520
Level 2 | Interest Rate Cap Derivative
Assets
Total assets at fair value	$ 520