Long-Term Debt - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Debt Outstanding [Line Items]
Total debt	$ 610,060,000		$ 610,060,000		$ 706,227,000
Borrowings of long-term debt			610,000,000
Repayments of long-term debt			706,169,000	301,312,000
Pre-tax loss on extinguishment of debt	(2,966,000)	(23,873,000)	(16,318,000)	(23,873,000)
New Senior Secured Credit Facility | Term Loan A
Debt Outstanding [Line Items]
Total debt	300,000,000		300,000,000
Debt repayment, terms			a five-year term loan A in an aggregate principal amount equal to $300.0 million, with principal repayable in quarterly installments at a rate of 5.0% during each of the first two years, 10% during the third year, 15% during the fourth year and 11.25% during the fifth year, with the remaining 53.75% due at maturity (the “Term Loan A”);
New Senior Secured Credit Facility | New Senior Secured Revolving Credit Facility
Debt Outstanding [Line Items]
Line of credit, aggregate principal amount	100,000,000		100,000,000
Line of credit, outstanding amount	50,000,000		50,000,000
New Senior Secured Credit Facility | New Senior Secured Revolving Credit Facility | Foreign Denominated
Debt Outstanding [Line Items]
Line of credit, aggregate principal amount	15,000,000		15,000,000
New Senior Secured Credit Facility | New Senior Secured Revolving Credit Facility | Letter of Credit
Debt Outstanding [Line Items]
Line of credit, aggregate principal amount	50,000,000		50,000,000
New Senior Secured Credit Facility | New Senior Secured Revolving Credit Facility | Revolving Line of Credit
Debt Outstanding [Line Items]
Line of credit, aggregate principal amount	20,000,000		20,000,000
New Senior Secured Credit Facility | Incremental Credit Facility
Debt Outstanding [Line Items]
line of credit, incremental facility	150,000,000		150,000,000
Prior Senior Secured Credit Facility
Debt Outstanding [Line Items]
Cash used to repay outstanding debt			120,000,000
Repayments of long-term debt			462,200,000
Pre-tax loss on extinguishment of debt	3,000,000		3,000,000
Pre-tax loss of termination of hedge on related interest rate swap			2,600,000
Capitalized debt issuance costs			6,200,000
Senior Secured Credit Facility
Debt Outstanding [Line Items]
Credit facility,interest rate description			Borrowings under our new senior secured credit facility bear interest, at our option, at either the alternate base rate (defined as the higher of the prime rate announced by the Administrative Agent, the federal funds effective rate plus 0.5% or one-month LIBOR plus 1%) (the “Base Rate”) or at an Adjusted LIBO Rate (as defined in the credit agreement governing the new senior secured credit facility) (the “Eurodollar Rate”), except for borrowings made in alternate currencies which may not accrue interest based upon the alternate base rate, in each case, plus an applicable interest rate margin. The applicable margins are initially 0.75% per annum for Base Rate loans and 1.75% per annum for Eurodollar Rate loans. Beginning with the delivery of the financial statements and the compliance certificate for the quarter ending September 30, 2011, the margins applicable to the borrowings under our new senior secured credit facility may be adjusted based on our consolidated leverage ratio, with 1.00% being the maximum Base Rate margin and 2.00% being the maximum Eurodollar Rate.
Debt, prepayment terms			The new senior secured credit facility also contains a requirement that we make mandatory principal prepayments on the Term Loan A and revolving line of credit in certain circumstances, including, without limitation, with 100% of the aggregate net cash proceeds from certain asset sales, casualty events or condemnation recoveries (in each case, to the extent not otherwise used for reinvestment in our business or related business and subject to certain other exceptions). The new senior secured credit facility further provides that, subject to customary notice and minimum amount conditions, we may make voluntary prepayments without payment of premium or penalty.
Debt covenants			Our new senior secured credit facility also requires us to comply with: • a maximum consolidated leverage ratio, as defined in our senior secured credit facility (generally, the ratio of our consolidated total debt to consolidated earnings before interest, taxes, depreciation and amortization, or EBITDA, for the most recent four quarters), of 3.50:1.00; and • a minimum consolidated interest coverage ratio, as defined in our new senior secured credit facility (generally, the ratio of our consolidated EBITDA to consolidated interest expense for the most recent four quarters), of 3.00:1.00.
Guarantee to senior secured credit facility			Our new senior secured credit facility is guaranteed by certain of our existing and future domestic restricted subsidiaries pursuant to a Guarantee and Collateral Agreement. In addition, our obligations under our senior secured credit facility and the guarantee obligations of the subsidiary guarantors are secured by first priority liens on substantially all of our and our subsidiary guarantors’ present and future assets and by a pledge of all of the equity interests in our domestic subsidiary guarantors and 65% of the capital stock of certain of our existing and future foreign subsidiaries.
Percentage of capital stock of foreign subsidiaries pledged as a guarantee	65.00%		65.00%
Senior Secured Credit Facility | Revolving Credit Facility
Debt Outstanding [Line Items]
Line of credit available	39,000,000		39,000,000
Standby letters of credit outstanding	11,000,000		11,000,000
Senior Secured Convertible Notes due 2033, net of discount
Debt Outstanding [Line Items]
Total debt	60,000		60,000		58,000
Guarantee to senior secured credit facility			The Guarantee and Collateral Agreement also secures our Senior Secured Convertible Notes due 2033 on an equal and ratable basis with the indebtedness under our new senior secured credit facility to the extent required by the indenture governing such notes.
8 1/4% Senior Notes due 2015
Debt Outstanding [Line Items]
Total debt					242,224,000
Repayments of long-term debt		297,800,000		297,800,000
Pre-tax loss on extinguishment of debt		23,900,000	13,300,000	23,900,000
6 5/8% Senior Notes due 2021
Debt Outstanding [Line Items]
Total debt	260,000,000		260,000,000
Borrowings of long-term debt			260,000,000
Capitalized debt issuance costs			$ 5,100,000
Debt Instrument, issuance date			2011-01-28
Debt Instrument redemption, description			We may redeem all or a portion of the 2021 Notes at our option at any time prior to February 1, 2016, at a redemption price equal to 100% of the principal amount of 2021 Notes to be redeemed, plus a make-whole premium as described in the 2021 Indenture, plus accrued and unpaid interest to the redemption date, if any. In addition, we must pay accrued and unpaid interest to the redemption date, if any. On or prior to February 1, 2014, we may also redeem at our option up to 35% of the principal amount of the outstanding 2021 Notes with the proceeds of certain equity offerings at the redemption prices specified in the 2021 Indenture, plus accrued and unpaid interest to the date of redemption, if any. Upon the occurrence of a change of control, as defined in the 2021 Indenture, we must make a written offer to purchase all of the 2021 Notes for cash at a purchase price equal to 101% of the principal amount of the 2021 Notes, plus accrued and unpaid interest to the date of repurchase, if any.
Debt Instrument Cash Redemption Price	101.00%		101.00%
6 5/8% Senior Notes due 2021 | Senior Notes Redeemable Prior To February 1st, 2016
Debt Outstanding [Line Items]
Debt Instrument Redemption Price	100.00%		100.00%
6 5/8% Senior Notes due 2021 | Senior Notes Redeemable Prior To February 1st, 2014 With Equity Offering Proceeds
Debt Outstanding [Line Items]
Debt Instrument Redemption Price	35.00%		35.00%