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Other Balance Sheet Captions (Detail) - Components of Property and Equipment - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Components of Property and Equipment [Abstract]    
Land, buildings and improvements $ 67,487 $ 56,143
Transportation equipment 3,253 5,417
Machinery and equipment 164,871 152,742
Construction in progress 10,608 15,612
Property and equipment, at cost 246,219 229,914
Less accumulated depreciation and amortization (153,428) (146,360)
Property and equipment, net $ 92,791 $ 83,554