XML 46 R35.htm IDEA: XBRL DOCUMENT v3.20.2
Property Plant And Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Property Plant And Equipment [Line Items]    
Less: Accumulated depreciation $ (84,601) $ (80,206)
Property, plant and equipment 59,663 63,158
Land [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 3,204 3,204
Leaseholds and Leasehold Improvements [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 3,820 3,820
Building [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 72,902 72,772
Machinery and Equipment [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 62,770 61,871
Construction in Progress [Member]    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 1,568 $ 1,697