Quarterly report pursuant to Section 13 or 15(d)

Foreign Currency Translation (Details)

v3.10.0.1
Foreign Currency Translation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Revenue from external customers        
Net sales $ 43,914 $ 39,021 $ 84,466 $ 77,112
Foreign operations        
Revenue from external customers        
Net sales $ 4,500 $ 4,700 $ 9,900 $ 9,500