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Other Current Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Other Liabilities Disclosure [Abstract]    
Customer incentives $ 4,852 $ 3,766
Accrued interest 227 227
Other 1,176 1,006
Total other current liabilities $ 6,255 $ 4,999