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Summary of Significant Accounting Policies (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Assets:    
Cash and money market accounts $ 10,584,067 $ 2,521,050
Interest rate swaps 4,117 40,209
Total 10,588,184 2,561,259
Fair Value, Inputs, Level 1 [Member]    
Assets:    
Cash and money market accounts 10,584,067 2,521,050
Interest rate swaps
Total 10,584,067 2,521,050
Fair Value, Inputs, Level 2 [Member]    
Assets:    
Cash and money market accounts
Interest rate swaps 4,117 40,209
Total 4,117 40,209
Fair Value, Inputs, Level 3 [Member]    
Assets:    
Cash and money market accounts
Interest rate swaps
Total