Long-Term Debt (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2012

Dec. 31, 2011

Long-term Debt [Abstract]

Long-term debt

	March  31, 2012			December 31, 2011
Senior Credit Facility	$	695,477		$	595,477
7 7/8% Senior Subordinated Notes		400,000			400,000
6 5/8% Senior Subordinated Notes		122,760			381,290
6 5/8% Senior Subordinated Notes — Series B		98,493			191,544
6 5/8% Senior Subordinated Notes — Series C		34,910			256,040
5 7/8% Senior Subordinated Notes		500,000			—
9 3/4% Senior Notes		333,358			331,553
Other notes with various rates and terms		2,597			2,624
		2,187,595			2,158,528
Less current maturities		(26,242	)		(17,310	)
Long-term debt, excluding current maturities	$	2,161,353		$	2,141,218

	2011			2010
Senior Credit Agreement	$	595,477		$	808,875
7 7/8% Senior Subordinated Notes		400,000			400,000
6 5/8% Senior Subordinated Notes		381,290			400,000
6 5/8% Senior Subordinated Notes — Series B		191,544			206,689
6 5/8% Senior Subordinated Notes — Series C		256,040			265,672
9 3/4% Senior Notes		331,553			324,866
Other notes with various rates and terms		2,624			3,038
		2,158,528			2,409,140
Less current maturities		(17,310	)		(5,694	)
Long-term debt, excluding current maturities	$	2,141,218		$	2,403,446

Summary of long-term debt matures

2012	$	17,310
2013	$	33,735
2014	$	387,808
2015	$	1,012,595
2016	$	307,087
Later years	$	399,993

Remaining quarterly amortization of the Term facilities

	Term A-1		Term A-2		Term A-3		Term B
September 30, 2012 — December 31, 2012	$	6,750	$	750	$	—	$	813.2
March 31, 2013 — March 31, 2014	$	6,750	$	750	$	625	$	813.2
June 30, 2014 — December 31, 2014	$	13,500	$	1,500	$	625	$	813.2
March 31, 2015	$	13,500	$	1,500	$	1,250	$	813.2
June 30, 2015 — September 30, 2015	$	37,125	$	4,125	$	1,250	$	813.2
December 31, 2015	$	74,250	$	8,250	$	1,250	$	813.2
March 31, 2016 — September 30, 2016	$	—	$	—	$	1,250	$	813.2
December 31, 2016	$	—	$	—	$	1,250	$	304,151.9
March 31, 2017 — June 30, 2017	$	—	$	—	$	21,250	$	—
August 9, 2017	$	—	$	—	$	42,500	$	—

	Term A-1		Term A-2		Term B
September 30, 2012 — March 31, 2014	$	6,750	$	750	$	813.2
June 30, 2014 — March 30, 2015	$	13,500	$	1,500	$	813.2
June 30, 2015 — September 30, 2015	$	37,125	$	4,125	$	813.2
December 31, 2015	$	74,250	$	8,250	$	813.2
March 31, 2016 — September 30, 2016	$	—	$	—	$	813.2
December 31, 2016	$	—	$	—	$	304,151.9