XML 58 R46.htm IDEA: XBRL DOCUMENT v3.20.2
Other Financial Statement Information - Property, Plant and Equipment - Net (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - Gross $ 295,661 $ 294,710
Less accumulated depreciation (171,400) (170,692)
Property, plant and equipment - Net 124,261 124,018
Land and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - Gross 21,101 22,218
Buildings and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - Gross 82,654 82,811
Machinery, Equipment and Aircraft [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - Gross 177,881 180,221
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment - Gross $ 14,025 $ 9,460