Fair Value Of Financial Instruments (Summary of Carrying Amounts and Estimated Fair Values of Debt Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total long-term debt, excluding debt issuance costs and discounts, Carrying Amount	$ 1,304,278	$ 23,415
Total long-term debt, excluding debt issuance costs and discounts, Estimated Fair Value	1,311,778	23,415
ABL Credit Facility, maturing 2021 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total long-term debt, excluding debt issuance costs and discounts, Carrying Amount	0	0
Total long-term debt, excluding debt issuance costs and discounts, Estimated Fair Value	0	0
Senior Notes, maturing 2023 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total long-term debt, excluding debt issuance costs and discounts, Carrying Amount	400,000	0
Total long-term debt, excluding debt issuance costs and discounts, Estimated Fair Value	404,752	0
Other debt [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total long-term debt, excluding debt issuance costs and discounts, Carrying Amount	26,478	23,415
Total long-term debt, excluding debt issuance costs and discounts, Estimated Fair Value	26,478	23,415
Senior Credit Facility [Member] | Revolving Credit Facility, maturing 2021 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total long-term debt, excluding debt issuance costs and discounts, Carrying Amount	0	0
Total long-term debt, excluding debt issuance costs and discounts, Estimated Fair Value	0	0
Senior Credit Facility [Member] | Term Loan Facility, maturing 2022 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total long-term debt, excluding debt issuance costs and discounts, Carrying Amount	877,800	0
Total long-term debt, excluding debt issuance costs and discounts, Estimated Fair Value	$ 880,548	$ 0