Annual report pursuant to Section 13 and 15(d)

Fair Value - Assets and Liabilities Measured on a Recurring Basis (Details)

v3.8.0.1
Fair Value - Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Assets:    
Other equity securities $ 2,958,315 $ 9,287,209
Total Assets 2,958,315 9,307,159
Interest Rate Swap [Member]    
Assets:    
Derivative asset   19,950
Level 1 [Member]    
Assets:    
Other equity securities 0 0
Total Assets 0 0
Level 1 [Member] | Interest Rate Swap [Member]    
Assets:    
Derivative asset   0
Level 2 [Member]    
Assets:    
Other equity securities 0 0
Total Assets 0 19,950
Level 2 [Member] | Interest Rate Swap [Member]    
Assets:    
Derivative asset   19,950
Level 3 [Member]    
Assets:    
Other equity securities 2,958,315 9,287,209
Total Assets $ 2,958,315 9,287,209
Level 3 [Member] | Interest Rate Swap [Member]    
Assets:    
Derivative asset   $ 0