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Fair Value Measurement Disclosures (Details 2) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Interest Rate Swap        
Interest rate swaps        
Gain (loss) recognized in other comprehensive loss (effective portion) $ 44 $ 71 $ 125 $ 146