Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.5.0.2
Debt (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2016
Sep. 30, 2016
Sep. 30, 2015
Debt Instrument [Line Items]      
Mortgage principal payments   $ 103,603 $ 389,799
Mortgage [Member]      
Debt Instrument [Line Items]      
Interest rate   6.83%  
Maturity date   Mar. 01, 2016  
Mortgage principal payments $ 104,000    
Line of Credit [Member]      
Debt Instrument [Line Items]      
Line of credit, maximum borrowing capacity   $ 15,000,000  
Line of credit, amount outstanding   0  
Line of credit, remaining borrowing capacity   $ 13,037,000  
Line of credit facility, interest rate at period end   2.50%  
Line of credit, expiration date   Aug. 12, 2021  
Minimum liquidity   $ 10,000,000  
Liquidity level   $ 25,814,000  
Line of Credit [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Line of credit, basis spread on variable rate   2.00%