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Summary of Business Sales Segmentation as per Location (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Net Sales:        
Net sales $ 66,523 $ 68,313 $ 133,088 $ 149,408
US        
Net Sales:        
Net sales 43,842 50,094 93,064 108,050
International        
Net Sales:        
Net sales $ 22,681 $ 18,219 $ 40,024 $ 41,358