Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives - Effects of Interest Rates Swaps Designated as Cash Flow Hedges (Details 8)

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Fair Value Measurements and Derivatives - Effects of Interest Rates Swaps Designated as Cash Flow Hedges (Details 8) - Cash Flow Hedging - Designated as Hedging Instrument - Interest Rate Swap - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (loss) recognized in other comprehensive income - effective portion $ 284 $ (2,555)
Gain recognized in other income (expense), net - ineffective portion 3
Amount reclassified from accumulated other comprehensive income (loss) into interest expense, net $ 845 $ 1,000