XML 44 R33.htm IDEA: XBRL DOCUMENT v3.8.0.1
CNB Loan (Details) - CNB Revolver [Member] - USD ($)
3 Months Ended
Sep. 30, 2016
Mar. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]      
Line of credit $ 3,000,000    
Debt instrument maturity date   Sep. 30, 2018  
Percentage of commitment fee on unused capacity 0.75%    
Line of credit facility amount outstanding   $ 0 $ 0
Line of credit facility associated restricted cash   $ 0 $ 0
30-day LIBOR [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate 2.00%