Derivative Financial Instruments - Additional Information (Detail) In Millions, unless otherwise specified	0 Months Ended		1 Months Ended	3 Months Ended	6 Months Ended
	May 07, 2008 USD ($)	May 07, 2008 EUR (€)	May 31, 2010	Jun. 30, 2012 USD ($)	Jun. 30, 2013	Jun. 30, 2012 USD ($)	May 24, 2010 USD ($)
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Fixed interest rate							1.50%
Floating interest rate term, months			1 month
Notional amount of contract	$ 28.0	€ 18.3					$ 30.0
Contract maturity date	Dec. 14, 2012	Dec. 14, 2012			Jul. 30, 2012
Floating interest rate for debt obligation					One-month London Inter-Bank Offering Rate ("LIBOR")
Net loss incurred on intercompany note				$ 0.2		$ 0.1