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Commitments And Contingencies - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Loss Contingencies [Line Items]          
Derivative, Amount of Hedged Item $ 100,000   $ 100,000    
Loans Payable to Bank 300,000   300,000   $ 250,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value 700   700    
Line of Credit Facility, Amount Outstanding 0   0   $ 0
Other income (expense), net (6,484) $ (417) $ (5,784) $ (123)  
Other Income [Member]          
Loss Contingencies [Line Items]          
Other income (expense), net $ 8,900