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Derivative Instruments (Effect of Derivatives on Condensed Consolidated Statements of Income (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]        
Interest expense, net [1] $ 8,475 $ 10,109 $ 21,821 $ 25,125
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest rate contracts [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives designated in fair value hedging   (52) (183) (138)
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest rate contracts [Member] | Interest Expense [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives designated in fair value hedging [2]   (52) (18) (138)
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest rate contracts [Member] | Debt Extinguishment [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivatives designated in fair value hedging     (165)  
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate contracts [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
(Loss) income recognized in other comprehensive income, net of tax (7,384) 1,330 (26,576) 1,394
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate contracts [Member] | Interest Expense [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Loss reclassified from accumulated other comprehensive income [2] $ (406) $ (261) $ (668) $ (456)
[1] Bond discounts and deferred loan fees are reported within interest expense, net on the Condensed Consolidated Statements of Income.
[2] Realized gain (loss) on hedging instruments consist of net cash settlements and interest accruals on interest rate swaps during the periods.