Financing (Schedule of Interest Rate Swap) (Details) $ in Thousands	Oct. 20, 2016 USD ($)
Debt Disclosure [Abstract]
November 3, 2016	$ 275,000
October 3, 2017	255,000
October 3, 2018	225,000
October 3, 2019	180,000
October 3, 2020	125,000
April 3, 2021	$ 0

Derivative Instruments, Payment Received on Interest Rate Swap, Period Five

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Derivative Instruments, Payment Received on Interest Rate Swap, Period Four

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Derivative Instruments, Payment Received on Interest Rate Swap, Period One

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Derivative Instruments, Payment Received on Interest Rate Swap, Period Six

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Derivative Instruments, Payment Received on Interest Rate Swap, Period Three

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