Other Current Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Customer incentives	$ 3,179	$ 4,030
Accrued research and development costs	683	773
Accrued interest	1,586	202
Other	1,577	1,994
Total other current liabilities	$ 7,025	$ 6,999