Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Customer incentives and rebates	$ 4,955	$ 4,729
Accrued research and development costs	364	990
Interest Payable, Current	202	311
Accrued interest	2,660	0
Other	1,889	2,013
Total other current liabilities	$ 10,070	$ 8,043