Long-Term Debt (Detail) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Debt Instrument [Line Items]
Total debt	$ 606,310	$ 706,227
Current portion long-term debt	15,000	7,058
Long-term debt	591,310	699,169
New Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	50,000
Senior Secured Term Loan A
Debt Instrument [Line Items]
Total debt	296,250
Senior Secured Convertible Notes due 2033, net of discount
Debt Instrument [Line Items]
Total debt	60	58
Senior Notes due 2015
Debt Instrument [Line Items]
Total debt		242,224
Senior Notes due 2021
Debt Instrument [Line Items]
Total debt	260,000
Senior Secured Term Loan B
Debt Instrument [Line Items]
Total debt		347,723
Senior Secured Delayed Draw Term Loan
Debt Instrument [Line Items]
Total debt		$ 116,222

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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