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Other Current Liabilities
 9 Months Ended
Sep. 30, 2015
Other Liabilities Disclosure [Abstract]  
Other Current Liabilities
Other Current Liabilities
Other current liabilities consist of the following (in thousands):
 
September 30, 2015
 
December 31, 2014
Customer incentives and rebates
$
5,571

 
$
4,729

Accrued research and development costs
183

 
990

Accrued interest
1,604

 
311

Other
1,880

 
2,013

Total other current liabilities
$
9,238

 
$
8,043