Long-Term Debt and Other Borrowing Arrangements - Additional Information (Detail)	6 Months Ended		6 Months Ended					6 Months Ended			3 Months Ended	6 Months Ended
	Jun. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Jun. 30, 2013 $400.0 million senior secured credit facility [Member] USD ($)	Jun. 30, 2013 $400.0 million senior secured credit facility [Member] Minimum [Member]	Jun. 30, 2013 $400.0 million senior secured credit facility [Member] Maximum [Member]	Jun. 30, 2013 Senior Secured Term Loan Credit Facility [Member]	Dec. 31, 2012 Senior Secured Term Loan Credit Facility [Member] CAD	Jun. 30, 2013 Senior Subordinated notes due 2022 [Member] Senior Subordinate Notes [Member] USD ($)	Jun. 30, 2013 Senior Subordinated notes due 2019 [Member] Senior Subordinate Notes [Member] USD ($)	Jun. 30, 2013 Senior subordinated notes due 2023 [Member] USD ($)	Mar. 31, 2013 Senior subordinated notes due 2023 [Member] Senior Subordinate Notes [Member] USD ($)	Jun. 30, 2013 Senior subordinated notes due 2023 [Member] Senior Subordinate Notes [Member]	Mar. 31, 2013 Senior subordinated notes due 2023 [Member] Senior Subordinate Notes [Member] EUR (€)
Debt Instrument [Line Items]
Senior secured credit facility	$ 232,147,000	$ 247,714,000					250,000,000
Interest on term loan						3.82%
Maximum amount of Senior Secured Credit Facility			400,000,000
Credit facility expiration date			Apr. 25, 2016
Line of credit facility interest rate description			Under the revolving credit component, we are permitted to borrow and repay funds in various currencies. Interest on outstanding borrowings is variable, based on either the three month LIBOR rate or the prime rate.
Line of credit, interest rate, LIBOR term			3 months
Available Borrowing Capacity	386,600,000
Borrowing outstanding under the revolving credit agreement
Letters of credit outstanding, Amount	13,400,000
Commitment fee percentage depending on leverage ratio				0.25%	0.50%
Senior subordinated notes	1,098,767,000	705,221,000						700,000,000	5,200,000		388,200,000		300,000,000
Interest rate of senior subordinated notes								5.50%	9.25%		5.50%
Carrying value of notes										393,500,000
Senior Subordinated Notes maturing 2019; description of priority								The notes are guaranteed on a senior subordinated basis by certain of our subsidiaries. The notes rank equal in right of payment with our senior subordinated notes due 2019 and 2023 and with any future subordinated debt, and they are subordinated to all of our senior debt and the senior debt of our subsidiary guarantors, including our Senior Secured Facility.	The notes rank equal in right of payment with our senior subordinated notes due 2022 and 2023 and with any future subordinated debt, and they are subordinated to all of our senior debt and the senior debt of our subsidiary guarantors, including our Senior Secured Facility.		The notes are guaranteed on a senior subordinated basis by certain of our subsidiaries. The notes rank equal in right of payment with our senior subordinated notes due 2022 and 2019 and with any future subordinated debt, and they are subordinated to all of our senior debt and the senior debt of our subsidiary guarantors, including our Senior Secured Facility.
Senior Subordinated Notes maturing 2019; guarantees by subsidiaries								The notes are guaranteed on a senior subordinated basis by certain of our subsidiaries.	The notes are guaranteed on a senior subordinated basis by certain of our subsidiaries.		The notes are guaranteed on a senior subordinated basis by certain of our subsidiaries.
Frequency of interest payments								Semiannually	Semiannually		Semiannually
Fees associated with debt issuance	7,817,000										7,800,000
Effective interest rate of senior subordinated notes									9.75%
Senior subordinated notes due date								2022				2023
Fair value of debt instrument	1,077,000,000
Senior subordinated notes carrying value	$ 1,099,000,000