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Financial Derivative Instruments (Details) - Cash Flow Hedging - Designated as Hedging Instrument - USD ($)
Dec. 31, 2016
Dec. 31, 2015
June 28, 2016    
Derivative [Line Items]    
Notional Amount $ 30,000,000  
Fixed Rate Paid 0.94%  
Fair Value $ 1,049,000 $ 0
June 27, 2016    
Derivative [Line Items]    
Notional Amount $ 20,000,000  
Fixed Rate Paid 0.893%  
Fair Value $ 741,000 0
Interest Rate Swap    
Derivative [Line Items]    
Notional Amount 50,000,000  
Fair Value $ 1,790,000 $ 0