Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt [Abstract]

Summary Of Long-Term Debt

	December 31,
	2018		2017
	Long-term		Long-term
Senior unsecured notes due September 2024	$	500,000	$	500,000
Senior unsecured notes due December 2021		800,000		800,000
Total debt, gross		1,300,000		1,300,000
Unamortized debt issuance costs		(17,079)		(20,229)
Total debt, net	$	1,282,921	$	1,279,771

Schedule Of Maturities Of Long-Term Debt

2019	$	-
2020		-
2021		800,000
2022		-
2023		-
Thereafter		500,000
Total	$	1,300,000