Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of other intangible assets	$ 2,606	$ 3,012
Estimated amortization expense during the remainder of 2016	7,800
Estimated amortization expense for the year 2017	9,600
Estimated amortization expense for the year 2018	8,000
Estimated amortization expense for the year 2019	7,400
Estimated amortization expense for the year 2020	7,200
Estimated amortization expense for the year 2021	6,700
Estimated amortization expense after the year 2021	$ 8,900