Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.4.0.3
Debt (Details) - USD ($)
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Debt Instrument [Line Items]    
Mortgage principal payments $ 103,603 $ 127,727
Long-term investments pledged against line of credit $ 5,000,000  
Mortgage [Member]    
Debt Instrument [Line Items]    
Interest rate 6.83%  
Maturity date Mar. 01, 2016  
Line of Credit [Member]    
Debt Instrument [Line Items]    
Line of credit, maximum borrowing capacity $ 10,000,000  
Line of credit, amount outstanding 1,500,000 $ 0
Line of credit, remaining borrowing capacity $ 8,500,000  
Line of credit facility, interest rate at period end 1.90%  
Line of credit, expiration date Oct. 31, 2016  
Line of Credit [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Line of credit, basis spread on variable rate 1.75%