Business Segment Information - Summary of Property, Plant and Equipment of Reporting Segments by Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment net	$ 52,306	$ 48,549
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment net	42,534	37,029
Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment net	6,015	6,865
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment net	998	1,368
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment net	1,036	1,308
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment net	$ 1,723	$ 1,979