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Other Current Liabilities
 6 Months Ended
Jun. 30, 2015
Other Liabilities Disclosure [Abstract]  
Other Current Liabilities
Other Current Liabilities
Other current liabilities consist of the following (in thousands):
 
June 30, 2015
 
December 31, 2014
Customer incentives and rebates
$
4,955

 
$
4,729

Accrued research and development costs
364

 
990

Accrued interest
202

 
311

Accrued common stock repurchase
2,660

 
—

Other
1,889

 
2,013

Total other current liabilities
$
10,070

 
$
8,043