Quarterly report pursuant to Section 13 or 15(d)

Revolving Credit Line - Schedule of Notes Payable (Details)

v3.10.0.1
Revolving Credit Line - Schedule of Notes Payable (Details) - USD ($)
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Long-term Debt, Total $ 4,825,000 $ 4,900,000
Line of Credit | Revolving Credit Facility    
Debt Instrument [Line Items]    
Revolving credit line - 6.25 percent at September 30, 2018 (prime plus 1.0 percent), due October 20, 2018 $ 4,825,000 $ 4,900,000
Stated interest rate 6.25%  
Line of Credit | Revolving Credit Facility | Prime Rate    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.00%