Debt (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Schedule of Debt

Debt consists of the following:

	September 30, 2014						December 31, 2013
	Carrying Amount			Estimated Fair Value			Carrying Amount			Estimated Fair Value
6.35% Senior Notes, $200 million par value, maturing April 2016	$	200,000		$	217,352		$	204,028		$	218,750
3.875% Senior Notes, $275 million par value, maturing September 2021	273,732			274,973			—			—
4.375% Senior Notes, $275 million par value, maturing December 2024	273,961			276,430			—			—
Capital leases	18,590			18,590			12,215			12,215
Total debt	766,283			787,345			216,243			230,965
Less current maturities	(202,401		)	(219,753		)	(2,428		)	(2,428		)
Long-term debt	$	563,882		$	567,592		$	213,815		$	228,537