Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement- Fair Value of Liabilities Measured on a Recurring Basis (Details)

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Fair Value Measurement- Fair Value of Liabilities Measured on a Recurring Basis (Details) (Derivatives Designated as Hedging Instruments:, Recurring, Level 2, Interest rate swap instruments, USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Other assets
   
Assets:    
Interest rate swap instruments $ 176 $ 1,553
Other liabilities
   
Liabilities:    
Interest rate swap instruments $ 4,042 $ 4,268