Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term debt	$ 293,962	$ 268,980
Less current portion	(3,118)	(20,108)
Long-term debt and capital lease obligations, less current portion	290,844	248,872
Term Loan B
Debt Instrument [Line Items]
Long-term debt	290,640
Revolver
Debt Instrument [Line Items]
Long-term debt	2,460
Terminated Revolver
Debt Instrument [Line Items]
Long-term debt		33,000
Terminated 95/8% Senior Secured Second Lien Notes
Debt Instrument [Line Items]
Long-term debt		212,622
Terminated Subordinated debt
Debt Instrument [Line Items]
Long-term debt		7,500
Terminated Subordinated Debt due to Related Parties
Debt Instrument [Line Items]
Long-term debt		15,000
Capital leases and other loans
Debt Instrument [Line Items]
Long-term debt	$ 862	$ 858