XML 42 R31.htm IDEA: XBRL DOCUMENT v3.7.0.1
CNB Loan (Details) - USD ($)
9 Months Ended
Sep. 30, 2016
Mar. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]      
Line of credit facility associated restricted cash   $ 3,793,000 $ 2,770,000
CNB Revolver [Member]      
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
CNB Revolver [Member] | 30-day LIBOR [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate 2.00%