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Fair Value of Financial Instruments (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2012
Dec. 31, 2014
Fair Value Disclosures [Abstract]          
Non-Recurring Fair Value Measurements     $ 0    
Derivatives not designated as hedging instruments Interest rate risk activities $ 7,000   7,000   $ 37,000
Amount of Realized/Unrealized Gain (Loss) Recognized in Income on Derivatives 4,000 $ 12,000 14,000 $ 37,000  
Amortization of gain (loss) on discontinued hedges during next 12 months (5,000)   (5,000)    
Amortization of gain (loss) on discontinued hedges during next 12 months, net of tax $ (9,000)   $ (9,000)