Restructuring and Other - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) Employees	Sep. 30, 2014 USD ($) Employees	Sep. 30, 2015 USD ($) Employees	Sep. 30, 2014 USD ($) Employees
Reorganizations [Abstract]
Restructuring and other costs	$ 584	$ 3,021	$ 2,544	$ 5,662
Severance charges	$ 500	$ 800	$ 1,800	$ 2,500
Number of head count reductions | Employees	17	26	65	96
Facilities relocation and downsizing expenses	$ 100	$ 1,800	$ 500	$ 2,000
Integration expenses	$ 100	$ 400	$ 200	$ 1,200