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Property, Plant And Equipment (Property, Plant and Equipment) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 49,055 $ 54,461
Less accumulated depreciation and amortization 23,016 34,714
Property, plant and equipment- net 26,039 19,747
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 565 565
Building and Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 12,890 12,881
Equipment and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 17,739 12,187
Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 17,716 28,683
Vehicles [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 145 $ 145