Subsequent Events - Additional Information (Detail) (Subsequent Events [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	Feb. 07, 2014	Jan. 30, 2014 Restructuring Plan [Member] Employees
Subsequent Event [Line Items]
Restructuring Plan expected to be completion		Jan. 30, 2014
Severance, employee-related benefits and other associated expenses		$ 15.7
Number of employees terminated		225
Share Repurchase Program authorized amount	$ 75