Debt and Credit Agreements (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Debt and credit agreement components

The Company’s debt and credit agreements consisted of the following:

(In thousands)	September 30, 2017			December 31, 2016
Total debt
6.51% weighted-average senior notes	$	361,000		$	361,000
9.78% senior notes	67,000			67,000
5.58% weighted-average senior notes	175,000			175,000
3.65% weighted-average senior notes	925,000			925,000
Current maturities
6.51% weighted-average senior notes	(237,000		)	—
Long-term debt, excluding current maturities	$	1,291,000		$	1,528,000
Unamortized debt issuance costs	(6,449		)	(7,470		)
	$	1,284,551		$	1,520,530