Quarterly report pursuant to Section 13 or 15(d)

Components of Inventories (Detail)

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Components of Inventories (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Inventory [Line Items]    
Raw materials $ 3,662 $ 3,789
Finished goods 23,456 20,292
Inventory, Gross, Total 27,118 24,081
Less: provision for obsolescence (1,941) (1,946)
Net inventories $ 25,177 $ 22,135