Business Segments - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Segment	Mar. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable business segments | Segment	2
Foreign exchange losses	$ 1,064	$ (1,173)
Corporate and Other [Member] | Other Expense [Member]
Segment Reporting Information [Line Items]
Interest expense	900
Foreign exchange losses	$ 1,100	1,200
Acquisition related costs		$ 1,800