Cash Flows (Summary of Non-Cash Activities and Other Supplemental Data) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Treasury stock not yet settled	$ 10,988	$ 0
Capital lease additions	14,271	0
Capital expenditures incurred but not yet paid	2,501	2,216
Supplemental Data:
Cash interest paid	27,873	28,235
Income taxes paid, net	$ 4,069	$ 6,426

Treasury Stock Not Yet Settled

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- Definition

Future cash outflow to pay for purchases of fixed assets that have occurred.

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Amount of increase in lease obligation from new lease.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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