Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Financial Instruments Measured on Recurring Basis

The carrying amounts and estimated fair values of our senior notes and interest rate swaps were as follows:

		June 30, 2013				December 31, 2012
Financial Instrument	Fair Value Input Level	Carrying Value		Fair Value		Carrying Value		Fair Value
		(In thousands)
Assets:
Interest rate swaps	Level 2	$	545	$	545	$	—	$	—
Liabilities:
Senior notes:
6.5% senior notes	Level 2	$	295,601	$	294,000	$	295,275	$	321,000
8.25% senior notes	Level 2	148,551		158,625		148,399		163,125
		444,152		452,625		443,674		484,125
Interest rate swaps	Level 2	—		—		3,430		3,430
		$	444,152	$	452,625	$	447,104	$	487,555