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Property, Plant & Equipment, Net - Schedule of Property, Plant & Equipment, Net (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Property, Plant & Equipment [Line Items]    
Property, plant & equipment, gross $ 183,110 $ 176,691
Less: accumulated depreciation and amortization (91,247) (82,504)
Total property, plant & equipment, net 91,863 94,187
Land [Member]    
Property, Plant & Equipment [Line Items]    
Property, plant & equipment, gross 14,950 14,950
Buildings [Member]    
Property, Plant & Equipment [Line Items]    
Property, plant & equipment, gross 70,934 70,628
Machinery, Equipment and Fixtures [Member]    
Property, Plant & Equipment [Line Items]    
Property, plant & equipment, gross 67,135 65,407
Computer Software [Member]    
Property, Plant & Equipment [Line Items]    
Property, plant & equipment, gross 18,488 18,482
Construction in Progress [Member]    
Property, Plant & Equipment [Line Items]    
Property, plant & equipment, gross $ 11,603 $ 7,224