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Fair Value of Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Fair value of financial instruments:    
Amortization of gain (loss) on discontinued hedges during next 12 months $ 21  
Amortization of gain (loss) on discontinued hedges during next 12 months, net of tax   14
Interest rate contract | Not designated as hedging instrument | Interest rate swaps
   
Fair value of financial instruments:    
Derivatives not designated as hedging instruments, interest rate swap liabilities 103  
Swap | Interest rate swap | Interest rate swaps
   
Fair value of financial instruments:    
Derivatives not designated as hedging instruments, interest rate swap liabilities   213
Swap | Interest rate swap | Not designated as hedging instrument | Interest expense
   
Fair value of financial instruments:    
Amount of Realized/Unrealized Gain (Loss) Recognized in Income on Derivatives $ 73 $ 36