Indebtedness (Tables)

9 Months Ended

Sep. 30, 2011

Indebtedness [Abstract]

Debt Outstanding

	September 30,		December 31,
	2011		2010
Bank debt	$	—	$	274,000
Subordinated debt:
6.375% Senior Subordinated Notes due 2015		—		150,000
7.5% Senior Subordinated Notes due 2016, net of discount		—		249,683
7.5% Senior Subordinated Notes due 2017		250,000		250,000
7.25% Senior Subordinated Notes due 2018		250,000		250,000
8.0% Senior Subordinated Notes due 2019, net of discount		287,678		286,853
6.75% Senior Subordinated Notes due 2020		500,000		500,000
5.75% Senior Subordinated Notes due 2021		500,000		—
Total debt	$	1,787,678	$	1,960,536