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Fair Value of Financial Instruments - Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Assets and Liabilities Measured at Fair Value on Recurring Basis    
Interest rate contracts - assets $ 142 $ 71
Interest rate contracts - liabilities (111) (77)
Level 2    
Assets and Liabilities Measured at Fair Value on Recurring Basis    
Interest rate contracts - assets 142 71
Interest rate contracts - liabilities $ (111) $ (77)