XML 52 R42.htm IDEA: XBRL DOCUMENT v3.7.0.1
Geographic and Product Data (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Apr. 01, 2016
Product Information [Line Items]    
Net sales $ 20,350 $ 19,269
ICLs [Member]    
Product Information [Line Items]    
Net sales 15,271 13,180
IOLs [Member]    
Product Information [Line Items]    
Net sales 4,606 5,067
Other surgical products [Member]    
Product Information [Line Items]    
Net sales $ 473 $ 1,022