Debt and Short-Term Borrowings (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Aug. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Senior Notes due on October 1, 2018, paying interest semi-annually at a rate of 11% per annum				$ 252,347
Other short-term borrowing	1,200		1,800	12,995
Total debt	735,880			763,756
Senior Secured Credit Facility due on September 30, 2016 paying interest at a variable interest rate (LIBOR plus margin)
Debt Instrument [Line Items]
Credit facility		[1]		484,414	[1]
Term A due on April 17, 2018 | Senior Secured Credit Facility
Debt Instrument [Line Items]
Credit facility	292,153	[2]			[2]
Term B due on April 17, 2020 | Senior Secured Credit Facility
Debt Instrument [Line Items]
Credit facility	392,527	[3]			[3]
Expiring on April 17, 2018 | Senior Secured Revolving Credit Facility paying interest at a variable interest rate
Debt Instrument [Line Items]
Credit facility	50,000
Expiring on September 30, 2015 | Senior Secured Revolving Credit Facility paying interest at a variable interest rate
Debt Instrument [Line Items]
Credit facility				$ 14,000

[1] Subject to a minimum rate ("LIBOR floor") of 1.50% plus applicable margin of 4.00% at December 31, 2012.

[2] Applicable margin of 2.50% at December 31, 2013.

[3] Subject to a minimum rate ("LIBOR floor") of 0.75% plus applicable margin of 2.75% at December 31, 2013.