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Discontinued Operations - Schedule of Condensed Cash Flow Information (Detail)
$ in Thousands
9 Months Ended
Sep. 30, 2017
USD ($)
Discontinued Operations And Disposal Groups [Abstract]  
Deferred income taxes $ 91,497
Depreciation and amortization of property, plant and equipment 1,607
Stock-based compensation 955
Expenditures for property, plant and equipment 273
Software and software development costs $ 675