Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Instruments [Abstract]

Schedule of Long-term Debt Instruments

The carrying amounts of our long-term debt are as follows:

	June 30, 2016			December 31, 2015
	(In thousands)
Credit Agreement
Amount outstanding	$	786,000		$	712,000
6.5% Senior Notes
Principal	300,000			300,000
Unamortized discount and debt issuance costs	(2,864		)	(3,248		)
	297,136			296,752
Total long-term debt	$	1,083,136		$	1,008,752

Schedule of Derivative Instruments

Additional information on our interest rate swaps is as follows:

Derivative Instrument	Balance Sheet Location	Fair Value			Location of Offsetting Balance	Offsetting Amount
	(In thousands)
June 30, 2016
Interest rate swaps designated as cash flow hedging instrument:
Variable-to-fixed interest rate swap contracts ($150 million of LIBOR-based debt interest)	Other long-term   liabilities	$	(405	)	Accumulated other     comprehensive income	$	(405	)
		$	(405	)		$	(405	)
December 31, 2015
Interest rate swaps designated as cash flow hedging instrument:
Variable-to-fixed interest rate swap contract ($150 million of LIBOR-based debt interest)	Other long-term   assets	$	304		Accumulated other     comprehensive loss	$	304
Variable-to-fixed interest rate swap contracts ($155 million of LIBOR-based debt interest)	Other long-term   liabilities	(114		)	Accumulated other     comprehensive income	(114		)
		$	190			$	190

Schedule of Interest Expense and Other Debt Information

Interest expense consists of the following components:

	Six Months Ended June 30,
	2016		2015
	(In thousands)
Interest on outstanding debt:
Credit Agreement, net of interest on interest rate swaps	$	10,284	$	7,488
6.5% Senior Notes	9,757		9,757
Amortization of discount and deferred debt issuance costs	1,376		930
Commitment fees and other	679		261
Total interest incurred	22,096		18,436
Less capitalized interest	285		612
Net interest expense	$	21,811	$	17,824
Cash paid for interest	$	20,736	$	17,280