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Derivatives - Interest Rate Cap Agreement (Details)
9 Months Ended
Sep. 30, 2017
USD ($)
Derivative [Line Items]  
Notional amount $ 9,886,000
Interest Rate Cap  
Derivative [Line Items]  
Notional amount $ 10,000,000
Derivative cap interest rate (as a percent) 2.00%
Premium Paid $ 70,000
Derivative Instrument, Unamortized Premium 70,000
Derivative Asset 1,000
Cumulative Cash Flows Received $ 0