Geographic and Product Data (Details 1) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 29, 2017 |
Sep. 30, 2016 |
Sep. 29, 2017 |
Sep. 30, 2016 |
|
Product Information [Line Items] | ||||
Net sales | $ 23,473 | $ 20,052 | $ 65,759 | $ 60,295 |
ICLs [Member] | ||||
Product Information [Line Items] | ||||
Net sales | 18,110 | 14,801 | 49,698 | 43,389 |
IOLs [Member] | ||||
Product Information [Line Items] | ||||
Net sales | 3,892 | 4,649 | 12,875 | 14,783 |
Other surgical products [Member] | ||||
Product Information [Line Items] | ||||
Net sales | $ 1,471 | $ 602 | $ 3,186 | $ 2,123 |