Debt and Credit Agreements (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Debt and credit agreement components

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

(In thousands)	June 30, 2016			December 31, 2015
Total Debt
7.33% weighted-average senior notes	$	20,000		$	20,000
6.51% weighted-average senior notes	361,000			425,000
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
Revolving credit facility	—			413,000
	1,548,000			2,025,000
Unamortized debt issuance costs	(8,151		)	(8,861		)
Total debt, net(1)	$	1,539,849		$	2,016,139

(1) Includes $20.0 million of current portion of long-term debt at June 30, 2016 and December 31, 2015, respectively.